Patent Application
20240276141
The present invention relates to techniques, including a method, and system, for processing audio, motion, ultra wide band (“UWB”) and frequency modulated continuous wave (“FMCW”) signals using a plurality of antenna array, and other conditions and events. More particularly, the present techniques can be combined with feedback for digital cognitive behavioral therapy for improving sleep, as an example. Merely by way of examples, various applications can include daily life, sleep, and others.
Various conventional techniques exist for monitoring people within a home or building environment. Such techniques include use of cameras to view a person. Other techniques include a pendant or other sensing device that is placed on the person to monitor his/her movement. Examples include Personal Emergency Response Systems (PERS) devices such as LifeAlert® and Philips® LifeLine—each of which are just panic buttons for seniors to press in case of an emergency. Other techniques have been proposed to monitor sleep. Unfortunately, all of these techniques have limitations. That is, each of these techniques fails to provide a reliable and high quality signal to accurately detect a key human activities of the person being monitored. Additionally, many of the techniques fail to provide meaningful feedback or counter measures to counteract any undesirable events.
From the above, it is seen that techniques for identifying and monitoring a person is highly desirable.
According to the present invention, techniques related to a method, and system, for processing audio, UWB, FMCW signals using a plurality of antenna array, and other signals and events are provided. More particularly, the present techniques can be combined with feedback for digital cognitive behavioral therapy for improving sleep, as an example. Merely by way of examples, various applications can include daily life, sleep, and others.
In an example, the present technique provides a method for processing signals from a human user in connection with a sleep state. Preferably, the method includes using information from the signals for digital cognitive behavioral therapy to improve a sleep state of the human user. In an example, the method generally includes sensing of human activities, processing information from such sensing, outputting a task to the user, monitoring a reaction from the user, and adjusting any one of the aforementioned, to improve a sleep state of the user.
The above examples and implementations are not necessarily inclusive or exclusive of each other and may be combined in any manner that is non-conflicting and otherwise possible, whether they be presented in association with a same, or a different, embodiment or example or implementation. The description of one embodiment or implementation is not intended to be limiting with respect to other embodiments and/or implementations. Also, any one or more function, step, operation, or technique described elsewhere in this specification may, in alternative implementations, be combined with any one or more function, step, operation, or technique described in the summary. Thus, the above examples implementations are illustrative, rather than limiting.
According to the present invention, techniques related to a method, and system, for processing UWB and FMCW signals using a plurality of antenna array are provided. In an example, the plurality of antenna array, including a receiving antenna array and a transmitting antenna array configured to capture and transmit signals in an omni-directional manner. Merely by way of examples, various applications can include daily life, sleep, and others.
In an example, multiple aspects of antenna design can improve the performance of the activities of daily life (“ADL”) system. For example in scanning mode the present technique continuously looks for moving human targets (or user) to extract ADL or fall. Since these can happen anywhere in the spatial region of a home, the present system has antennas that have wide field of view. Once the human target is identified, the technique focuses signals coming only from that particular target and attenuate returns from all other targets. This can be done by first estimating location of the target from our technique using wide field of view antennas and then focusing RF energy on the specific target of interest once it has been identified. In an example, the technique can either electronically switch a different antenna that has narrow field of view or could use beam forming techniques to simultaneously transmit waves from multiple transmit antenna and control their phase such that the RF energy constructively builds around the target of interest where as it destructively cancels everywhere else. This return will be much cleaner and can boost the performance of our ADL+fall+vital sign sensors.
In another example considers the layout of the antennas itself. In an example, the technique places transmit and receive antennas in various different physical configurations (ULA, circular, square, etc.), that can help us establish the direction from which the radar signal returns, by comparing phases of the same radar signal at different receiving antennas. The configurations can play a role because different configurations enable direction of arrival measurement from different dimensions. For example, when the human target falls the vertical angle of arrival changes from top to bottom, therefore a vertical ULA is better suited to capture that information. Likewise during walking horizontal angle of arrival of the signal varies more therefore it makes sense to use horizontal ULA is more sensitive and therefor can provide additional information for our algorithm. Of course, there can be other variations, modifications, and alternatives.
In an example, the wireless RF unit can be either pulsed doppler radar or frequency modulated continuous wave (FMCW) or continuous wave doppler (CW). In an example, on the transmit side it will have standard RF units like VCO, PLL, among others. On the receive side it can have matched filter, LNA, mixer, and other elements. The multiple antennas can be either driven by a single transmit/receive chain by sharing it in time or have one each chain for each of the antennas.
In an example, waveform pattern generator generates control signals that define the type of radar signal that is generated by the radar RF unit. For example for FMCW, it can generate triangular wave of specific slope and period, which will linearly sweep the frequency of the RF unit according to this parameter. For a pulsed doppler radar, the technique will hold generate pulse of specific width and period, which will modulate the RF output accordingly.
In an example, the gain and filter stage filters the radar returns to remove any unwanted signals and then amplifies the remaining signal with different techniques. For example, the present artificial intelligence or AI technique can determine what target is desirably tracked and provide feedback to the AI technique, that will filter out radar return from any and all other signals except for the signal that is desirably tracked. If human target is moving the return signal will be fluctuating, in that case, the technique applies automatic gain control (AGC) to find the optimal gain, so that entire dynamic range of ADC in the subsequent stage is satisfied. In an example, the return signal is converted to digital samples by analog-to-digital converters (ADC), among other front-end elements.
In an example, the present technique is provided to identify various activities in home using non-wearable. In an example, the technique is at least privacy intrusive as possible, and will use sensors that are less intrusive. Examples of sensors can include, without limitation, a wireless backscatter (e.g., radar, WiFi.), audio (e.g., microphone array, speaker array), video (e.g., PTZ mounted, stereo), pressure mats, infrared, temperature, ultraviolet, humidity, pressure, smoke, any combination thereof, and others.
In an example, the technique can use wireless backscattering to measure motion of human, a location, and an environmental state, such as door opening/closing, or other environmental condition. In an example, the wireless backscattering can also be used to measure a vital sign, such as a heart rate and respiration rate, among others. In an example, the wireless techniques can work in non-line of sight, and is non-intrusive compared to camera or microphone, or others. In an example, the technique can use radar\backscatter sensor for two purposes (1) to find the location of an action; and (2) sense different activities associated with the action. Of course, there can be other variations, modifications, and alternatives.
In an example, the present technique and system includes a radar system that operates on multiple frequency bands, such as below 10 GHz, around 24 GHz, 60 GHz, 77-81 GHz, among others. In an example, different frequency interacts differently with various objects in our environment. In an example, available signal bandwidth and permissible signal power are also regulated differently at different frequency bands. In an example, the present techniques optimally combine reflections coming from a reflector from multiple frequency bands to achieve large coverage, and/or improve accuracy. Of course, there can be other variations, modifications, and alternatives.
In an example, each radar is working at a particular frequency band will be using multiple transmit and receive antennas, as shown. In an example, using these multiple transmitters, the technique can perform transmit beam forming to concentrate radar signal on a particular target. In an example, the technique uses multiple receivers to collect reflected signals coming from various reflectors (e.g., human body, walls). After further processing this will allow us to find the direction of the reflector with respect to the radar. In an example, the technique also uses multiple transmitter and receiver to form virtual array, this will allow emulate the radar array with large element by using small number of transmitter and receiver chains. The main benefit is to improve the angle resolution without using a large array, saving space and component cost. In an example, different antenna array configurations to improve coverage (using beam forming) or add 3D localization capability (using 2-D array) are included.
In an example using standard radar signal modulation techniques, such as FMCW/UWB, on MIMO radar, the technique will first separate signals coming from different range and angle. The technique will then identify static reflectors, such as chairs, walls, or other features, from moving ones, such as human targets, pets, or the like. For moving objects that are tracked, the technique will further process signals for each of the reflectors. As an example, the technique will use different techniques to extract raw motion data (e.g., like spectrogram). In an example, the technique will apply various filtering process to extract periodic signals generated by vital signs, such as heart rate, respiration rate, among others. In an example, both the raw motion data and extracted vital signs will be passed to a downstream process, where they are combined with data from other sensors, such as radar outputs operating at different frequency or completely different sensors to extract higher insights about the environment. Of course, there can be other variations, modifications, and alternatives.
In an example, the present technique uses a sensor array that has a multiple microphone array. In an example, these microphones will be used to ascertain the direction of arrival of any audio signal in the environment. In an example, the microphone in conjunction with other sensors, such as radar, will be vital in performing two tasks: 1st it will augment radar signal to identify various activities (walking produces a different sound than sitting), if the target is watching TV it is much easier to ascertain it with audio signal; and 2nd in case of emergency like fall, the technique can use the radar signal to identify the location of the fall and then beam form microphone array towards that location, so that any audio signal produced by the target can be captured. Of course, there can be other variations, modifications, and alternatives.
In addition to a radar sensor, which is consider as active sensors the present sensor system (e.g., box, boxes) will also have additional passive sensors that captures the sound, chemical signature, environmental conditions. Each of these of the sensors captures different context about the home that the human being tracking is living in or occupying. In an example, the UV sensor can monitor how often the sunlight comes in the room. In an example, light sensors determine a lighting condition of the human's home or living area.
In an example, a microphone array can have many functions, such as use to sense sound in the room, to figure out how long the human has spent watching TV, or how many time they went to bathroom by listening to the sound of toilet flushing or other audio signature. In an example, the present technique can use creative solutions where it can use the active sensor to find the location of the person and then tune the microphone array to enhance the sound coming from that location only, among other features. In an example, the technique can call the sensors that are derived from the hardware sensors using specific algorithms as software sensors or soft sensors. So the same hardware sensors can be used for many different applications by creating different software sensors. Here the software sensors can combine signals from one or more sensors and then apply sensor fusion and AI techniques to generate the desired output. Of course, there can be other variations, modifications, and alternatives.
In example, radar sensors can determine information about a human's location within a home, like if they are in kitchen area, or other. In an example, when the human target turns on the microphone oven, it generates specific RF signature that can be tracked. In an example, the technique can combine this information to infer if the human target walked to the kitchen and turned on the microphone. Likewise, when the human target prepares food in kitchen he/she can make lot of specific noise like utensils clattering, chopping, or other audio signature. So if a human target goes to kitchen spends sometime time in the kitchen, and the present microphone pick these sounds, the technique can infer that food is cooking or other activity.
In an example, toileting frequency can be a very valuable indication of one's wellness. The present technique can track if a human went to the bathroom using the radar or other sensing techniques. In an example, additionally, the technique can pick sound signature of toilet flushing. In an example, the technique combines these two pieces of information, which can be correlated to toileting frequency. In an example, similarly, bathing is a unique activity that requires 4-5 minutes of specific movements. By learning those patterns, the technique can figure out ones bathing routines.
In an example, different sensors are triggered by different motion of a human target. In an example, radar can detect human fall by looking at micro doppler patterns generating by different part of the target during falls. In an example, the technique can also simultaneously hear a fall from microphone arrays and vibration sensors. In an example, the technique can also detect how pace of movement changes for an individual over a long duration by monitoring the location information provided by radar or other sensing technique. In an example, likewise, the technique can gather unstable transfers by analyzing the gait of the target. In an example, the technique can find front door loitering by analyzing the radar signal pattern. In an example, the technique can figure out immobility by analyzing the radar return. In this case, the technique can figure out the target's presence by analyzing the target's vital signs, such as respiration rate or heart rate or by keeping track of the bread crumb of the target's location trace.
In any and all of the above cases, the technique can also learn about the exact environmental condition that triggered a particular state. For example, the technique can figure out whether a human target was immobile because the target was watching TV or a video for long duration or the target was simply spending a lot of time in their bed. And these can be used to devise incentives to change the target's behavioral pattern for better living.
In an example, the technique can estimate vital signs of a person by sensing the vibration of the target's body in response to the breathing or heart beat, each of the actions results in tiny phase change in the radar return signals, which can be detected. In an example, the technique will use several signal processing techniques to extract them. Of course, there can be other variations, modifications, and alternatives.
In an example, different frequency radio wave interact with environment differently. Also phase change due to vital signs (HR,RR) differs by frequency, for example phase change for a 77 GHz radar is much higher than for a 10 GHz radar. Thus 77 GHz is more appropriate for estimating heart-beat more accurately. But higher frequency typically attenuates much more rapidly with distance. Therefore, lower frequency radar can have much larger range. By using multi-frequency radar in the present technique can perform these vital trade-offs.
In an example, the present radar sensors can detect motions that are generated during sleep, such as tossing and turning. In an example, radar sensors can also sense vital signs like respiration rate and heart rate as described earlier. In an example, now combining the pattern of toss and turn and different breathing and heart beat pattern, the technique can effectively monitor the target's sleep. Additionally, the technique can now combine results from passive sensors, such as a thermometer, UV, photo diode, among others, to find correlation between certain sleep pattern and the environmental conditions. In an example, the technique can also use the sleep monitor soft sensor to learn about day/night reversal of sleep, and the associated environmental condition by looking at different passive sensors. In an example, the techniques can be valuable in providing feedback to improve the human target's sleep. For example, the technique can determine or learn that certain environmental condition results in better sleep and prescribe that to improve future sleep. Further details of a sleep process can be found throughout the present specification and more particularly below.
In an example, the technique can repurpose many of the sensors described before for security applications. For a security application, the technique determines where one or more person is located, which can be detected using a presence detection sensor that is built on top of radar signals. In an example, the technique can eliminate one or many false positive triggered by traditional security systems. For example, is a window is suddenly opened by a wind the technique (and system) will look at presence of human in the vicinity before triggering the alarm. Likewise, combination of vital signs, movement patterns, among others, can be used a biometric to identify any human target. If an unknown human target is detected in the vicinity at certain time of the day, the technique can trigger an alarm or alert.
In an example, any one of the above sensing techniques can be combined, separated, or integrated. In an example, in addition to radar and audio sensors, other sensors can be provided in the sensor array. Of course, there can be other variations, modifications, and alternatives.
In an example, the hub includes various sensing devices. The sensing devices, include, among others, a radar, a WiFi, a Bluetooth, a Zigbee sniffer, a microphone and speakers, a smoke detector, a temperature detector, a humidity detector, a UV detector, a pressure detector, MEMS (e.g., accelerometer, gyroscope, and compass), a UWB sensors (for finding locations of all the deployed elements relative to each other), among others. In an example, the hub is a gateway to internet via WiFi, GSM, Ethernet, landline, or other technique. The hub also connects to other units (Mini Node/Mobile Node) via Bluetooth, WiFi, Zigbee, UWB and coordinates them with each other. In an example, certain data processing, such as noise removal, feature extraction to reduce amount of data uploaded to cloud is included. In an example, the hub alone can be sufficient to cover a small living space. In an example, the hub is deployed as a single device somewhere in a desirable location (e.g., middle of the living space) so that it has good connectivity to all other units. An example of such deployment is provided in the Figure below.
In an example, as shown in
In an example, the housing has a height characterizing the housing from a bottom region to a top region. In an example, a plurality of levels 803 are within the housing numbered from 1 to N, wherein N is an integer greater than two, but can be three, four, five, six, seven, and others.
As shown, various elements are included. A speaker device 809 configured within the housing and over the bottom region, as shown. The hub device also has a compute module 811 comprising a processing device (e.g., microprocessor) over the speaker device. The device has an artificial intelligence module configured over the compute module, a ultra-wide band (“UWB”) module 813 comprising an antenna array configured over the artificial intelligence module, and a frequency modulated continuous wave (“FMCW”) module 815 with an antenna array configured over the UWC module. In an example, the FMCW module being configured to process electromagnetic radiation in a frequency range of 24 GHz to 24.25 GHz. In an example, the FMCW module outputs an FMCW signal using a transmitter, and receives back scattered signals using a receiver, such as a receiver antenna. The device has an audio module configured over the FMWC module and an inertial measurement unit (“IMU”) module configured over the FMCW module. In an example, the audio module comprises a microphone array for detecting energy in a frequency range of sound for communication and for detecting a sound energy. In an example, the IMU module comprises at least one motion detection sensor consisting of one of a gyroscope, an accelerometer, a magnetic sensor, or other motion sensor, and combinations thereof.
As shown, the speaker device, the compute module, the artificial intelligence module, the UWB module, the FMCW module, the audio module, and the IMU module are arranged in a stacked configuration and configured, respectively, in the plurality of levels numbered from 1 to N. In an example, the speaker device comprises an audio output configured to be included in the housing. As shown, the speaker device is spatially configured to output energy within a 360 degree range from a midpoint of the device.
In an example, the compute module comprises a microprocessor based unit coupled to a bus. In an example, the compute module comprises a signal processing core, a microprocessor core for an operating system, a synchronizing processing core configured to time stamp, and synchronize incoming information from each of the FMCW module, IMU module, and UWB module.
In an example, the device further comprises a real time processing unit configured to control the FMCW switch or the UWB switch or other switch requiring a real time switching operation of less than ½ milliseconds of receiving feedback from a plurality of sensors.
In an example, the device has a graphical processing unit configured to process information from the artificial intelligence module. In an example, the artificial intelligence module comprises an artificial intelligence inference accelerator configured to apply a trained module using a neural net based process. In an example, the neural net based process comprises a plurality of nodes numbered form 1 through N. Further details of the UWB module can be found throughout the specification and more particularly below.
In an example, the device has a triangular configuration comprising a first antenna array, a second antenna array, and a third antenna array included in the at least three antenna arrays. The three arrays provide a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured from a vertical plane normal to the horizontal plane. As previously noted, the three arrays are enclosed in a housing that provides mechanical support. In an example, each of the sensor arrays is provided on a substrate member to be configured in the triangular configuration. The substrate member has a face arranged in a normal manner in a direction to each of the support members.
In an example, the UWB module can operate at a center frequency of 7.29 GHz and a bandwidth of ˜1.5 GHz with multiple antenna arrays to achieve the FCC/ETSI compliance standard. In an example, the module has a combined horizontal field-of-view of 360 degrees about a center point of the module. In an example, the module has a range greater than 10 meters, but can be shorter and longer. In an example, the module is configured to achieve a transmission and a receive rate of frames per second (FPS) equal to or greater than 330 per Tx-Rx. In an example, the module has a combined horizontal field of view of 360 degrees achieved using three (3) antenna arrays, each of which covering 120 degrees. In an example, each antenna array comprises of 1-TX and 4-RX. Each antenna array is configured to complete the acquisition of a frame within 1 millisecond or less. Accordingly, a total of three (3) milliseconds covers all three (3) sectors, achieving a frame rate of 330 fps per sector (per Tx-Rx) in an example. In an example, the module has programmability of various parameters similar to Novelda X4M03 module. In an example, the module is a hybrid architecture that has four by four radar integrated circuit devices in MIMO configuration that switches between the three antenna arrays. The configuration is capable of simultaneous capturing of all four Rx frames in an antenna array. Further details of the present UWB module is provided throughout the present specification and more particularly below.
In an example, the basic components of the X4 SoC are a transmitter, a receiver, and related control circuits. The system is controlled by a system controller and is configurable through a 4(6)-wire serial peripheral interface (SPI). In an example, the X4 receive path (RX) consists of a low noise amplifier (LNA), a digital-to-analog converter (DAC), 1536 parallel digital integrators as well as an output memory buffer, accessible through the SPI. The RX is tightly integrated with the transmitter (TX) and is designed for coherent integration of the received energy. The X4 transmit path (TX) consists of a pulse generator capable of generating pulses at a rate of up to 60.75 MHz. The output frequency and bandwidth are designed to fit worldwide regulatory requirements. The radar transceiver is able to operate completely autonomously and can be programmed to capture data at predefined intervals and then alert or wake up a host MCU or DSP through dedicated interrupt pins. A power management unit controls the on-chip voltage regulators and enables low-power applications to use efficient duty cycling by powering down parts of the circuit when they are not needed. The system can be configured to consume less than 1 mW in idle mode when all analog front end components are turned off. As shown, each of the four X4 SoCs is coupled in parallel to a switch.
In an example, the switch 1109 is coupled to each antenna array as shown. In an example, the switch can be one listed under HMC241/HMC7992/ADRF5040 SP4T RF Switches of Analog Devices, Inc. The switches are non-reflective RF switches from DC to 12 GHz for 4G cellular, milcom, and radio applications. Examples of HMC241, HMC7992, and ADF5040 are radio frequency (RF) nonreflective/absorptive single pull, quad throw (SP4T) switches that can interface with 3.3 V, TTL, LVTTL, CMOS, and LVCMOS logic. The switches operate from DC to 12 GHz frequency range. The HMC241 is a GaAs MMIC RF switch that operates in the DC to 4 GHz range. The switch takes a single supply at +5 V. The HMC7992 has a 100 MHz to 6 GHz frequency range. The ESD rating is for this switch 2 kV (HBM) class 2. The HMC7992 takes a single voltage supply from ±3.3 V to +5 V. The ADRF5040 comes in a small 4 mm×4 mm LFCSP package and requires a dual ±3.3 V supply. The switch operates in the 9 kHz to 12 GHz range. The ADRF5040 has the added benefit of being 4 kV (HBM) ESD rating. HMC241, HMC7992, and ADF5040 are ideal for 4G cellular infrastructure such as base stations and repeaters as well as military communications and industrial test and measurement applications. Of course, there can be other variations, modifications, and alternatives.
In an example, the UWC module comprises a switch configured between a plurality of UWC transceivers. The switch is configured to select one of the three antenna arrays to sense the back scatters while the other two antenna arrays are turned off. In an example, the switch is an rf switch such as the one listed under part number ADRF-5040 manufactured by Analog Devices, Inc. In an example, the UWC module also has a controller configured to control the switch and the three antenna array. In an example, the controller cycles through a predetermined process to decide which one of the three antenna array to activate while the other two antenna arrays are turned off.
In an example, the at least three antenna array are configured to sense electromagnetic energy ranging from 6 to 8 GHz in frequency. As noted, the sensing apparatus is spatially positioned within a center of a geographic location of a room to detect movement of human user.
In an example, the present invention provides a method processing an electromagnetic signal generated from an ultra wide band rf signal to detect an activity of a human user. Referring to
In an example, the present invention provides a method processing an electromagnetic signal generated from an ultra wide band rf signal to detect an activity of a human user. In an example, the method includes generating a base band outgoing UWC signal. The method also includes receiving the base band outgoing UWC signal at a switch device and directing the outgoing UWC signal using the switch device to one of three antenna arrays configured in a triangular configuration to transmit the outgoing UWC signal from spatial location of a zero degree location in relation to a midpoint of the device through a 360 degrees visibility range where each antenna array is configured to sense a 120 degree range in a horizontal plane. Each of the antenna array is configured to sense and transmit at least an 80 degree visibility range as measured from a vertical plane that is normal to the horizontal plane.
In an example, each of the three antenna arrays has a support member, e.g., board, printed circuit board. In an example, each array has a plurality of transmitting antenna spatially configured on a first portion of the support member, a transmitting integrated circuit coupled to each of the plurality of transmitting antenna and configured to transmit the outgoing UWC signal, a plurality of receiving antenna spatially configured on second portion of the support member, and a receiving integrated circuit coupled to each of the plurality of receiving antenna and configured to receive an incoming UWB signal and configured to convert the UWC signal into a base band signal. In an example, the method includes receiving a back scattered electromagnetic signal caused by an activity of a human user redirecting the outgoing UWB signal.
The apparatus of claim 11 wherein the UWB module comprises a micro controller unit coupled to a memory resource, and a clock circuit, the micro controller unit being configured with a universal serial bus interface coupled to the compute module; wherein the compute module is configured with the artificial intelligence module to process information from the back scattered electromagnetic signal from the base band signal to detect the activity of the human entity.
In an example, the support member comprises a major plane positioned normal to a direction of gravity.
In an example, the antenna array comprises at least three antenna array spatially arranged in a triangular configuration comprising a first antenna array, a second antenna array, and a third antenna array included in the at least three antenna arrays to provide a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured from a vertical plane normal to the horizontal plane. In an example, the antenna array comprises at least three antenna array spatially arranged in a triangular configuration comprising a first antenna array, a second antenna array, and a third antenna array included in the at least three antenna arrays to provide a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured from a vertical plane normal to the horizontal plane, and further comprising a controller configured to control a switch coupled with each of the three antenna array, the controller cycles through a predetermined process to decide which one of the three antenna array to activate while the other two antenna arrays are turned off.
In an example, each antenna array comprises 1-TX and 4-RX.
In an example, the system has a switch device coupled between each of the antenna array and four receive lanes each of which is coupled to the receiving integrated circuit device, one transmit lane coupled to a transmitting integrated circuit device, and a micro controller unit coupled to a bus coupled to the receiving integrated circuit device and the transmitting integrated circuit device, the micro controller unit coupled to a memory resource configured with the micro controller to store raw data from information derived from four receive lanes, the micro controller unit being coupled to a clock.
In an example, each antenna array comprises 1 TX and four RX. In an example, the system has a switch device coupled between each of the three antenna arrays and four receive lanes each of which is coupled to the receiving integrated circuit device, one transmit lane coupled to a transmitting integrated circuit device, and a micro controller unit coupled to a bus coupled to the receiving integrated circuit device and the transmitting integrated circuit device, the micro controller unit coupled to a memory resource configured with the micro controller to store raw data from information derived from four receive lanes, the micro controller unit being coupled to a clock.
In an example, the present techniques include a method, apparatus, and device for processing signals. As shown 1400 in
Referring now to
As shown in the Table in
In an example,
In an example,
In an example, the system has a processing and acquisition module 1807. The module has a quad channel AFE RX listed under ADAR7251 by Analog Devices, and a FMCW generator listed under ADF4159. The module is coupled to and communicates with a 12 channel-3:1 demux switches 1805 listed under TS3DV621 by Texas Instruments Incorporated. The system has a microcontroller such as a Cypress Microcontroller listed under part number CYYSB301X, which is coupled to a memory resource, such as a 2 GB SDRAM. The system has a SPI Interface control between RF module and microcontroller. A USB interface is coupled to TCP 1809. Of course, there can be other variations, modifications, and alternatives. Further details can be found in a more detailed diagram 1850 of
In an example on a transmit lane 1851 referring to
In an example on a receive lane 1853, four FMCW signals are received from four RX antenna. The four signals are received in parallel, and fed to and processed in the Rf integrated circuit to output corresponding four base band analog signals, each of which is fed to the switch. The switch allows signals from one of the three antenna array to be transferred to corresponding analog to digital converters, each of which are in parallel. Each analog to digital converter is coupled to the microcontroller. Each analog to digital converter configures incoming base band signal into digital, which is fed to the microcontroller. Of course, there can be other variations, modifications, and alternatives.
In an example,
In an example, each antenna array has two (2) TX in an antenna array that are spaced by lambda apart horizontally and lambda over two vertically to form a virtual 2D array with the 4 RX 2003. In an example, the present virtual antenna mapping is provided to achieve the goal of power balancing the physical channels across the multiple physical antennas especially when multiple input multiple output is deployed in the downlink. In an example, virtual antenna mapping gives an illusion that there are actually lesser antennas at the base station than it actually has. The unbalanced balanced power across two transmits paths are transformed into balanced power at physical antenna ports by virtual antenna mapping. This is achieved using phase and amplitude coefficients. Thus both the power amplifiers are optimally used even for signals transmitted on the first antenna. Of course, there can be other variations, modifications, and alternatives.
In an example, use of higher power with FMCW can be used to capture more granular features, such as breathing, heart rate, and other small scale features. In an example, lower power and UWB is desirable for more gross features, which has lower frequency. Lower frequency can also penetrate walls, and other physical features.
In an example, the present invention provides an FMCW sensor apparatus. The apparatus has at least three transceiver modules. Each of the transceiver modules has an antenna array to be configured to sense a back scatter of electromagnetic energy from spatial location of a zero degree location in relation to a midpoint of the device through a 360 degrees range where each antenna array is configured to sense a 120 degree range. In an example, each of the antenna array has a support member, a plurality of receiving antenna, a receiver integrated circuit coupled to the receiving antenna and configured to receive an incoming FMCW signal and covert the incoming FMCW signal into a base band signal, and a plurality of transmitting antenna. Each antenna array has a transmitter integrated circuit coupled to the transmitting antenna to transmit an outgoing FMCW signal. The apparatus has a virtual antenna array configured from the plurality of receiving antenna and the plurality of transmitting antenna to form a larger spatial region using the virtual antenna array, than a physical spatial region of the plurality of receiving antenna. In an example, the apparatus has a triangular configuration comprising a first antenna array, a second antenna array, and a third antenna array included in the at least three antenna arrays to provide a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured from a vertical plane normal to the horizontal plane. The apparatus has a master control board coupled to each of the support members, and configured in a normal directional manner with reference to each of the support members. The apparatus has a housing enclosing the at least three transceiver modules.
In an example, the FMCW sensor apparatus comprises a switch configured between a plurality of FMCW transceivers, such that the switch is configured to select one of the three antenna arrays to sense the back scatters while the other two antenna arrays are turned off. In an example, the antenna array is configured to process electromagnetic radiation in a frequency range of 24 GHz to 24.25 GHz.
In an example, apparatus has a controller configured to control the switch and the three antenna array. In an example, the controller cycles through a predetermined process to decide which one of the three antenna array to activate while the other two antenna arrays are turned off. In an example, the three antenna array are configured to sense electromagnetic energy in a 24 GHz to 24.25 GHz frequency band. In an example, the sensing apparatus is spatially positioned within a center of a geographic location of a room to detect movement of human user. In an example, each of the sensor arrays is provided on a substrate member to be configured in the triangular configuration.
In an example, the apparatus has a housing. The housing has a maximum length of six to twenty four inches and width of no longer than six inches. In an example, the housing has sufficient structural strength to stand upright and protect an interior region within the housing.
In an example, the apparatus has a height characterizing the housing from a bottom region to a top region, a plurality of levels within the housing numbered from 1 to N, and a speaker device configured within the housing and over the bottom region. In an example, the apparatus has a compute module comprising a processing device over the speaker device, an artificial intelligence module configured over the compute module, a ultra-wide band (“UWB”) module comprising an antenna array configured over the artificial intelligence module, and an audio module configured over the FMWC module. The apparatus has an inertial measurement unit (“IMU”) module configured over the FMCW module.
In an example, the speaker device, the compute module, the artificial intelligence module, the UWB module, the FMCW module, the audio module, and the IMU module are arranged in a stacked configuration and configured, respectively, in the plurality of levels numbered from 1 to N.
In an example, the speaker device comprises an audio output configured to be included in the housing, the speaker device being configured to output energy within a 360 degree range from a midpoint of the device.
In an example, the compute module comprises a microprocessor based unit coupled to a bus. In example, the compute module comprises a signal processing core, a microprocessor core for an operating system, a synchronizing processing core configured to time stamp, and synchronize incoming information from each of the FMCW module, IMU module, and UWB module.
In an example, the apparatus has a real time processing unit configured to control the FMCW switch or the UWB switch or other switch requiring a real time switching operation of less than ½ milliseconds of receiving feedback from a plurality of sensors. In an example, the apparatus has a graphical processing unit configured to process information from the artificial intelligence module.
In an example, the artificial intelligence module comprises an artificial intelligence inference accelerator configured to apply a trained module using a neural net based process, the neural net based process comprising a plurality of nodes numbered form 1 through N.
In an example, the FMCW module comprises at least three antenna arrays to be configured to sense a back scatter of electromagnetic energy from spatial location of a zero degree location in relation to a midpoint of the device through a 360 degrees range where each antenna array is configured to sense a 120 degree range.
In an example, each of the antenna arrays comprises a FMCW transceiver and a switch configured between each of the FMCW transceiver and a controller, such that the switch is configured to select one of the three antenna arrays and the FMWC transceiver to sense the back scatters while the other two antenna arrays are turned off, and further comprising a serial interface.
In an example, the audio module comprises a micro phone array for detecting energy in a frequency range of sound for communication and for detecting a sound energy.
In an example, the UMU module comprises a support substrate, an electrical interface provided on the support structure, an accelerometer coupled to the electrical interface, a gyroscope coupled to the electrical interface, a compass coupled to the electrical interface, a UV detector configured to detect ultraviolet radiation coupled to the interface, a pressure sensor coupled to the interface, and an environmental gas detector configured and coupled to the interface to detect a chemical entity.
In an example, the present invention provides an apparatus for processing activities of a human user. The apparatus has an audio module and a compute module coupled to the audio module. The apparatus has a transceiver module coupled to the compute module. In an example, the transceiver module has an antenna array to be configured to sense a back scatter of electromagnetic energy in a frequency range of 24 GHz to 24.25 GHz from spatial location of a zero degree location in relation to a midpoint of the device through a 360 degrees range where each antenna array is configured to sense a 120 degree range.
In an example, the antenna array comprises a support member, a plurality of receiving antenna, a receiver integrated circuit coupled to the receiving antenna and configured to receive an incoming frequency modulated continuous wave (FMCW) signal and covert the incoming FMCW signal into a base band signal, a plurality of transmitting antenna, a transmitter integrated circuit coupled to the transmitting antenna to transmit an outgoing FMCW signal.
In an example, the apparatus has a virtual antenna array configured from the plurality of receiving antenna and the plurality of transmitting antenna to form a larger spatial region using the virtual antenna array, than a physical spatial region of the plurality of receiving antenna. In an example the apparatus has a master control board coupled to the support member, and configured in a normal directional manner with reference to the support member and a housing enclosing the transceiver modules, the compute module, and the audio module.
In an example, the present invention has methods using the apparatus, device, and systems. In an example, the method is for processing signals from human activities. The method includes generating an rf signal using a transceiver module coupled to a compute module and emitting the rf signal using one of three antenna array and sensing using one of the three antenna array configured from spatial location of a zero degree location in relation to a midpoint of the three antenna array through a 360 degrees range where each antenna array is configured to sense a 120 degree range to capture a back scatter of electromagnetic energy in a frequency range of 24 GHz to 24.25 GHz associated with a human activity.
In an example, the present invention provides an alternative radio frequency (RF) sensing apparatus. The apparatus has an ultra wide band (UWB) module comprising at least three ultra wide band (UWB) antenna arrays configured in a triangular arrangement to sense a back scatter of electromagnetic energy from a spatial location such that the triangular arrangement allows for sensing from a zero degree location in relation to a midpoint of the triangular arrangement through a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured from a vertical plane that is normal to the horizontal plane where each UWB antenna array is configured to sense at least a 120 degree range.
In an example, each of the UWB antenna arrays comprises a support member, a plurality of transmitting antenna spatially configured on a first portion of the support member, a transmitting integrated circuit coupled to each of the plurality of transmitting antenna and configured to transmit an outgoing UWB signals, a plurality of receiving antenna spatially configured on second portion of the support member, and a receiving integrated circuit coupled to each of the plurality of receiving antenna and configured to receive an incoming UWB signal and configured to convert the UWB signal into a base band signal.
In an example, the apparatus has a frequency modulated continuous wave module comprising at least three frequency modulated continuous wave (FMCW) transceiver modules. Each of the FMCW transceiver modules has a FMCW antenna array. In an example, the three FMCW transceiver modules are configured in a triangular arrangement to sense a back scatter of electromagnetic energy from spatial location such that the triangular arrangement allows for sensing from a zero degree location in relation to a midpoint of the triangular arrangement through a 360 degree visibility range as measured from a horizontal plane, and a 80 degree visibility range as measured form a vertical plane that is normal to the horizontal plane where each FMCW antenna array is configured to sense at least a 120 degree range.
In an example, each of the FMCW antenna array comprises a support member, a plurality of receiving antenna, a receiver integrated circuit coupled to the receiving antenna and configured to receive an incoming FMCW signal and covert the incoming FMCW signal into a base band signal, a plurality of transmitting antenna, a transmitter integrated circuit coupled to the transmitting antenna to transmit an outgoing FMCW signal, and a virtual antenna array configured from the plurality of receiving antenna and the plurality of transmitting antenna to form a larger spatial region using the virtual antenna array, than a physical spatial region of the plurality of receiving antenna.
In an example, the apparatus has a master control board coupled to each of the support members, and configured in a normal directional manner with reference to each of the support members and a housing enclosing the at least three FMCW transceiver modules and the at least three UWB antenna arrays.
In an example, the apparatus has a FMCW switch configured between a plurality of FMCW transceivers, such that the FMCW switch is configured to select one of the three FMCW antenna arrays to sense the back scattered signal while the other two FMCW antenna arrays are turned off; wherein each of the FMCW antenna array is configured to process electromagnetic radiation in a frequency range of 24 GHz to 24.25 GHz.
In an example, the apparatus has a FMCW controller configured to control the FMCW switch and the three FMCW antenna array, the FMCW controller cycles through a predetermined process to decide which one of the three FMCW antenna array to activate while the other two FMCW antenna arrays are turned off. In an example, the three FMCW antenna array are configured to sense electromagnetic energy in a 24 GHz to 24.25 GHz frequency band. In an example, the RF sensing apparatus is spatially positioned within a center of a geographic location of a room to detect movement of human user using either the outgoing FMCW signal or the outgoing UWB signal.
In an example, the apparatus has a UWB switch configured between a plurality of UWC transceivers, such that the UWB switch is configured to select one of the three UWB antenna arrays to sense the back scatters while the other two UWB antenna arrays are turned off. In an example, the apparatus has a UWB controller configured to control the UWB switch and the UWB three antenna array, the UWB controller cycles through a predetermined process to decide which one of the three UWB antenna array to activate while the other two UWB antenna arrays are turned off. In an example, the at least three UWB antenna array are configured to sense electromagnetic energy ranging from 6 to 8 GHz in frequency.
In an example, the housing has a maximum length of six to twenty four inches and width of no longer than six inches, the housing having sufficient structural strength to stand upright and protect an interior region within the housing; a height characterizing the housing from a bottom region to a top region; a plurality of levels within the housing numbered from 1 to N. The apparatus can also have a speaker device configured within the housing and over the bottom region, a compute module comprising a processing device over the speaker device, an artificial intelligence module configured over the compute module, an audio module, and an inertial measurement unit (“IMU”) module.
In an example, the present invention has an alternative radio frequency (RF) sensing apparatus. The apparatus has an ultra wide band (UWB) antenna array configured in a spatial arrangement to sense a back scatter of electromagnetic energy from a spatial location such that the spatial arrangement allows for sensing from a first location in relation to a second location. In an example, the UWB antenna array comprises a support member, a plurality of transmitting antenna spatially configured on a first portion of the support member, a transmitting integrated circuit coupled to each of the plurality of transmitting antenna and configured to transmit an outgoing UWB signal, a plurality of receiving antenna spatially configured on second portion of the support member, and a receiving integrated circuit coupled to each of the plurality of receiving antenna and configured to receive an incoming UWB signal and configured to convert the UWB signal into a base band signal.
In an example, the apparatus has a frequency modulated continuous wave (FMCW) transceiver module. In an example, the FMCW transceiver modules has a FMCW antenna array. In an example, the FMCW transceiver module is configured to sense a back scatter of electromagnetic energy from the first location in relation to a second location.
In an example, the FMCW antenna array comprises a support member, a plurality of receiving antenna, a receiver integrated circuit coupled to the receiving antenna and configured to receive an incoming FMCW signal and covert the incoming FMCW signal into a base band signal, a plurality of transmitting antenna; a transmitter integrated circuit coupled to the transmitting antenna to transmit an outgoing FMCW signal, and a virtual antenna array configured from the plurality of receiving antenna and the plurality of transmitting antenna to form a larger spatial region using the virtual antenna array, than a physical spatial region of the plurality of receiving antenna.
In an example, the apparatus has a master control board coupled to each of the support members, and configured in a normal directional manner with reference to each of the support members and a housing enclosing the FMCW transceiver module and the UWB antenna array.
In an example, the apparatus has a FMCW switch configured to the FMCW transceiver, such that the FMCW switch is configured to select the FMCW antenna array to sense the back scattered signal; the FMCW antenna array is configured to process electromagnetic radiation in a frequency range of 24 GHz to 24.25 GHz. In an example, the apparatus has a FMCW controller configured to control the FMCW switch and the FMCW antenna array, the FMCW controller cycles through a predetermined process to decide when the FMCW antenna array is activated. In an example, the FMCW antenna array is configured to sense electromagnetic energy in a 24 GHz to 24.25 GHz frequency band.
In an example, the RF sensing apparatus is spatially positioned within a center of a geographic location of a room to detect movement of human user using either the outgoing FMCW signal or the outgoing UWB signal. In an example, the apparatus has a UWB switch configured to the UWC transceiver, such that the UWB switch is configured to select the UWB antenna array to sense the back scattered signal. In an example the apparatus has a UWB controller configured to control the UWB switch and the UWB antenna array, the UWB controller cycles through a predetermined process to decide when the UWB antenna array is activated. In an example, the UWB antenna array is configured to sense electromagnetic energy ranging from 6 to 8 GHz in frequency.
In an example, the housing has a maximum length of six to twenty four inches and width of no longer than six inches, the housing having sufficient structural strength to stand upright and protect an interior region within the housing; a height characterizing the housing from a bottom region to a top region; a plurality of levels within the housing numbered from 1 to N. In an example, the apparatus can have a speaker device configured within the housing and over the bottom region, a compute module comprising a processing device over the speaker device, an artificial intelligence module configured over the compute module, an audio module, and an inertial measurement unit (“IMU”) module.
In an example, the present invention also has an apparatus for monitoring a human user. The apparatus has a movable housing. In an example, the housing has a maximum length of six to twenty four inches and width of no longer than six inches. In an example, the housing has sufficient structural strength to stand upright and protect an interior region within the housing. The housing has a height characterizing the housing from a bottom region to a top region; a plurality of levels within the housing numbered from 1 to N. In an example, each of the levels has a module selected from at least one of:
Of course, there can be other variations, modifications, and alternatives.
In an example, the analog to digital converter uses a bus to connect to a processing system, including a processing device, a signal processor, and other elements. In an example, the ADC uses an I2S interface. In an example, the I2S interface has been developed by Philips Semiconductor (known today as NXP Semiconductors). In an example, the interface uses a push pull data signal, width of one data line (SD)+2 clock lines (SCK, WS), and a serial protocol. In an example as defined in Wikipedia.com, the “I2S” (Inter-IC Sound), pronounced eye-squared-ess, is an electrical serial bus interface standard used for connecting digital audio devices together. In an example, I2S communicates pulse coded modulation (“PCM”) audio data between integrated circuits in an electronic device. In an example, the I2S bus separates clock and serial data signals, resulting in simpler receivers than those required for asynchronous communications systems that need to recover the clock from the data stream.
In an example, the processing system has a digital signal processing (DSP) core, which receives digital audio and performs a beam-forming operation, including deploying an adaptive spectral noise reduction process and the multiple source selection (MSS) process to enhance the audio quality. In an example, the processing devices, including micro-processing unit and audio signal processing unit are provided in a separate compute module, or other hardware device.
In an example, the multiple source selection processes inputs audio information from the plurality of microphones, each of which is sensing an audio signal from a spatial region, in the array directly to the DSP core, without transferring such data into the processing device, for faster detection and selection of at least one of the microphone devices in the array that has the highest audio signal therefrom. Once the microphone has been selected, the audio information from the selected microphone is outputted or further processed using the processing system. In an example, the multiple source selection processes achieves at least a few milliseconds of time off standard processing times, which often run through the processor, where the audio information traverses through the processing device. As shown, audio signals are captured from surroundings, converted to digital signals via A/D converter, transmitted to the digital processing device for audio processing, without traversing the signals through the ARM micro-processing unit core, as shown.
In an example, the ADC for the audio module has a dedicated I2S channel that is also interfaced to drive an audio amplifier coupled to a speaker. In an example, multiple speakers such as dual speakers are integrated into the apparatus. In an example, the audio amplifier can be one listed under part number TPA3126D2DAD manufactured by Texas Instruments Incorporated, among others. In an example, the driver can be a 50-W, stereo, low-idle-current Class-D amplifier in a thermally enhanced package. In an example, the driver has a hybrid modulation scheme, which dynamically reduces idle current at low power levels to extend the battery life of portable audio systems (e.g., Bluetooth speakers, and others). In an example, the Class-D amplifier integrates full protection features including short circuit, thermal shutdown, overvoltage, under voltage, and DC speaker protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions. Other features can also be included.
In an example, the audio module can also include other sensing devices. As an example, the audio module includes an inertial measurement device, a pressure sensor, a gas sensor, and a plurality of LED devices, each of which is coupled to an LED driver. Each of the devices is coupled to auxiliary control hardware, which communicates to a micro-processing unit core using a bus, such as the I2C bus, but can be others.
In an example, the module has an accelerometer, a gyroscope, a magnetometer to form 9-axis inertial motion unit sensor. In an example, these sensors are important to detect the accurate positioning of the apparatus. In an example, the module also provides for additional information regarding the displacement of the apparatus from one spatial location to other spatial location.
In an example, the module has a pressure sensor to provide additional information of pressure changes in the surroundings or ambient area. In an example, the pressure sensor can be configured with the processing to detect opening and/or closing of a door or other building structure.
In an example the module has a gas sensor. In an example, the gas sensor is configured with the processor to detect the amount of carbon monoxide and other toxic gases that can be present in the surroundings where our device is located. In an example, the gas sensor is one sold under the part number ICM 10020 from TDK or other manufacturers.
In an example, the module has an LED array. In an example, the LED array can be a twelve (12) RGBW LED Ring for the Lighting Purposes. LED Driver used such as the one sold under part number LP5569. As shown, the LED array is configured spatially around a peripheral region of the substrate member, which is circular in this example.
As shown, each of the sensors communicates using the I2C bus, which communicates to various input/output devices on the processing system, as will be described in more detail below. Also shown is a general purpose input and output interface coupled to the processing system.
In an example, the system has multiple interfaces. A USB 3.0 interface communicates to the FMCW module. The I2S interface communicates to the audio module. A USB 2.0 interface communicates to the UWB module. Another USB 2.0 interface communicates to a user interface, such as a keyboard and a mouse. Other types of serial interfaces can also be included. The system also has an RJ-45 and Ethernet interface, a Wi-Fi and Bluetooth interface, a cellular interface, such as LTE, among others. The system has a global positioning sensor interface. The system has a power and clock module for power and clocking functions. The system has an inertial measurement unit connector and module. The system has multiple PCIE connector interfaces, one of which is coupled to a Wi-Fi sensor device. Other features include dynamic random access memory interface, embedded multi-media card connection and module, a solid disk drive connector, and a serial advanced technology attachment connector, among others.
An example of the processing system can be a single integrated circuit chip manufactured by Texas Instruments Incorporated sold as AM572x Sitara Arm applications processors. In a datasheet by for the Sitara Arm by Texas Instruments, “AM572x devices bring high processing performance through the maximum flexibility of a fully integrated mixed processor solution. The devices also combine programmable video processing with a highly integrated peripheral set. Cryptographic acceleration is available in every AM572x device. Programmability is provided by dual-core Arm Cortex-A15 RISC CPUs with Neon™ extension, and two TI C66x VLIW floating-point DSP cores. The Arm allows developers to keep control functions separate from other algorithms programmed on the DSPs and coprocessors, thus reducing the complexity of the system software. Additionally, TI provides a complete set of development tools for the Arm and C66x DSP, including C compilers, a DSP assembly optimizer to simplify programming and scheduling, and a debugging interface for visibility into source code execution.”
In an example, the processing system is coupled to an energy source, including a battery and a plug connection. The system also has a graphical processing module or artificial intelligence module for performing processing functions from data received from the interfaces. An example of the processing unit is one sold under the Movidius™ brand by Intel Corporation.
In an example, Movidius provides the ultimate in low-power vision processing solutions, which include the Myriad 2 family of vision processing units (VPUs) plus a comprehensive Myriad Development Kit (MDK), a reference hardware EVM and optional Machine Vision Application Packages. In an example, The Myriad 2 MA2x5x family of system-on-a-chip (SoC) devices offers significant computation performance and image processing capability with a low-power footprint. The Myriad 2 lineup includes the following product configurations: MA2150: 1 Gbit DDR MA2155: 1 Gbit DDR and secure boot MA2450: 4 Gbit DDR MA2455: 4 Gbit DDR and secure boot.
In an example, the Myriad 2 VPUs offer TeraFLOPS (trillions of floating-point operations per second) of performance within a nominal 1 Watt power envelope. The Myriad 2 architecture includes enough performance to support multiple cameras with flexible image signal processing pipelines for each camera, and software programmable vision processing with fixed-and floating-point datatypes supported. A robust overall dataflow design ensures mitigation of processing bottlenecks.
In an example, Myriad 2 MA2x5x incorporates an innovative approach to combine image signal processing with vision processing. A set of imaging/vision hardware accelerators supports a world-class ISP pipeline without any round trips to memory; at the same time they are repurposed to accelerate developers' vision processing algorithms in conjunction with a set of special purpose vision processor cores. All processing elements are tied together with a multi-ported memory that enables implementation of demanding applications with high efficiency. Further details can be found in a datasheet for Myriad 2 by Intel Corporation. Of course, other processing units can also be suitable for the processing applications.
In an example, the present invention provides a system for capturing information from a spatial region to monitor human activities. In an example, the system has a housing, the housing having a maximum length of six to twenty four inches and width of no longer than six inches, but can be other dimensions. In an example, the housing has sufficient structural strength to stand upright and protect an interior region within the housing, but can include variations. In an example, the housing has a height characterizing the housing from a bottom region to a top region and a plurality of levels within the housing numbered from 1 to N, each of the levels configured with one or more modules.
In an example, the system has an audio module comprising a substrate member and a plurality of peripheral microphone devices spatially disposed along a peripheral region of the substrate member. In an example, each of the peripheral microphone devices has an analog output. In an example, the module has a center microphone device spatially disposed within a center region of the substrate member. In an example, the center microphone device has an analog output. In an example, the module has an analog to digital converter coupled to each of the analog outputs. The module has a spatial configuration comprising a circularly shaped region for the peripheral region to provide a 360 degrees Field of view for the plurality of peripheral microphone devices. A bus device is coupled to each of the analog to digital converters. In an example, the bus device communicates with each of the plurality of peripheral microphone devices and the center microphone device. The module is coupled to a signal processor coupled to the bus device. The module is coupled to a processor device coupled to the signal processing device and is configured to process an audio information comprising an audio event from the plurality of microphone devices using the signal processors without transferring the audio information to the processing device to achieve a faster selection process of at least one milliseconds to select one of the microphone devices that has a strongest audio signal, and then transfers the audio information from the selected microphone devices. The system also has a cellular network module comprising an interface, which is coupled to the processing device. The system has a user interface configured on an exterior portion of the housing, and coupled to the processor. The user interface allows for a user to initiate and make external calls via the cellular network when desirable or also receive external calls from the network.
In an example, the system has other elements. That is, a speaker device is coupled to the processor device; and an audio driver device is coupled to drive the speaker device. In an example, an LED array is coupled to the processor device. In an example, a plurality of MEMS devices are coupled to the processor device. In an example, a gas sensor device is coupled to the processor device. In an example, a pressure sensor device is coupled to the processor device. In an example, the user interface can be a general purposes input and output device.
In an example, the system has an inertial measurement module comprising an LED array, an accelerometer device, a gas sensor device, and a pressure sensor device configured to detect a pressure within an environment of the housing. In an example, the inertial measurement module comprising a gas sensor to detect a presence of carbon dioxide and coupled to the processor device configured to send out an alert based upon a level of carbon dioxide. In an example, the system has a plurality of LED devices configured spatially around a periphery of the substrate member to allow for illumination of electromagnetic radiation. In an example, the inertial measurement module comprising a i2C bus coupled to a plurality of LED devices, a gyroscope device, an accelerometer device, a compass device, a pressure device, and a gas sensor, the i2C bus coupled to the processing device. In an example, the processing unit comprises an ARM processing unit coupled to a digital signal processor and an image processing unit.
Optionally, the system has a network module comprising an interface, which is coupled to the processing device. In an example, the system has a speaker device coupled to the processor device, and an audio driver device coupled to the speaker device, the processer device being configured with the network module to communicate audio information to output acoustic energy from the speaker device. The system has a user interface configured on an exterior portion of the housing, and coupled to the processor.
In an example, the present invention provides a method of capturing information from a spatial region to monitor human activities. In an example, the method uses an apparatus comprising a housing within a spatial region of a living quarter, which is occupied by a human user or users. In an example, the housing has sufficient structural strength to stand upright and protect an interior region within the housing, the housing having a plurality of levels within the housing numbered from 1 to N. Each of the levels configured with one or more modules, which can include any of the ones described herein and others.
In an example, the housing has an audio module comprising: a substrate member; a plurality of peripheral microphone devices spatially disposed along a peripheral region of the substrate member, each of the peripheral microphone devices having an analog output; a spatial configuration using an edge region for the peripheral region to provide a 360 degrees Field of view from the plurality of peripheral microphone devices; a bus device coupled to each of the analog to digital converters, the bus device communicating with each of the plurality of peripheral microphone devices; a signal processor coupled to the bus device; and a microprocessor device coupled to the signal processing device.
In an example, the method includes sensing a plurality of audio signals comprising an audio event from each of the plurality of microphone devices. Each of the plurality of microphone device can be receiving an audio signal of a different signal strength based upon a spatial location of each of the microphone devices. The method includes converting each of the audio signals from each of the microphone devices into a plurality of digital signals in a first format using an analog to digital converter. In an example, the method includes processing the digital signals in the first format to a second format, which can be compressed or other form to be transported via an interface. The method includes transferring the digital signals in the second format using a dedicated interface device from each of the plurality of microphone devices into a receive interface device coupled to the signal processing device without transferring the digital signals in the second format to the micro processing device. The method processes information associated with the digital signals using the signal processing device to select one of the microphone devices that has a strongest audio signal as compared to any of the other microphone devices; and transfers information associated with the digital signals from the selected microphone device to an outgoing interface device. In a preferred example, the method includes processing the digital signals from the selected microphone device using an artificial intelligence process to identify the event.
In an example, the technique transfers learned information and activity information to third parties. The technique teaches itself to learn high level behavior that are indicative of a person's welfare using artificial intelligence techniques. In an example, the present technique will then generate summary of such activities and send it out to the human's loved ones, caretaker or even emergency response team depending on the urgency of the situation. For example for regular days, the technique can simply send short summary like “your mom had a routine activity today”, or “She was much less active today.” In an example, where the human has a care taker visiting few times a week, the technique can send a notification to them, “It seems she struggles more on yesterday”, so that the care taker can pay a visit to make sure everything is fine. Alternatively, the technique can be more acute events like fall, shortness of breathing, or others, that needs quick attention. In these scenarios, the technique can notify medical response team to provide immediate help. Of course, there can be other variations, modifications, and alternatives.
In an example, the present technique can categorize a human target with the listed ADLs, among others. Examples of ADLs including among others, bathing, brushing teeth, dressing, using toilet, eating and drinking, and sleeping. Other ADLs include preparing meals, preparing drinks, resting, housekeeping, using a telephone, taking medicine, and others. Ambulatory activities including among others walking, doing exercise (e.g., running, cycling), transitional activities (e.g., sit-to-stand, sit-to-lie, stand-to-sit, lie-to-sit in and out of bed or chair), and stationary activities (e.g., sits in sofa, stand for a while, lie in bed or sofa). Of course, there can be other variations, modifications, and alternatives.
In an alternative example, the present technique can determine activities of a human target with any one of the activities listed. The listed activities, including among others, and combinations of going out, preparing breakfast, having breakfast, preparing lunch, having lunch, preparing dinner, having dinner, washing dishes, having snack, sleeping, watching TV, studying, having a shower, toileting, having a nap, using the Internet, reading a book, shaving, brushing teeth, telephone, listening to music, doing house cleaning, having a conversation, entertain guest, among others.
In an example, the present technique can also identify a rare event. In an example, the technique identifies when a senior human falls inside a home with no one around. In an example, the technique is robust, without any false negatives. In an example, the technique uses looking at sequence of events that are before to the potential fall and after a potential fall. In an example, the technique combines the contextual information to robustly determine if a fall has occurred. Of course, there can be other variations, modifications, and alternatives.
In an example, the technique also detects and measures vital signs of each human target by continuous, non-intrusive method. In an example, the vital signs of interest include a heart rate and a respiratory rate, which can provide valuable information about the human's wellness. Additionally, the heart rate and respiratory rate can also be used to identify a particular person, if more than two target humans living in a home. Of course, there can be other variations, modifications, and alternatives.
By understanding the context of how the target human (e.g., elderly) is doing, the technique can also provide valuable feedback directly to the elderly using a voice interface. For example, the technique can sense a mood of the human based on sequence of activities and vital signs of the human and then ask, “Hi do you want me to call your son”. Based upon the feedback from the human, the technique can help connect to a third party (or loved one) if their answer is positive. Of course, there can be other alternatives, variations, and modifications.
In an example, the present technique provides a method for processing signals from a human user in connection with a sleep state. Preferably, the method includes using information from the signals for digital cognitive behavioral therapy to improve a sleep state of the human user. In an example, the method generally includes sensing of human activities, processing information from such sensing, outputting a task to the user, monitoring a reaction from the user, and adjusting any one of the aforementioned, to improve a sleep state of the user.
In an example, the method detecting, using a plurality of sensing devices configured within a vicinity of the human user, a plurality of signals associated with an event, associating with a sleep stage of the human user at a predetermined time. In an example, the method includes receiving the plurality of signals into an input device,. In an example, the input device is coupled to an engine device, which can include artificial intelligence techniques. The method includes processing, using the engine, by parsing information associated with the plurality of signals; and determining using the engine, a classification associated with the event; and storing the classification associated with the event at the predetermined time. The method then includes continuing the steps of detecting, receiving, processing, and storing for a plurality of other predetermined times from a first time to a second time to create a history of sleep data for the human user. In an example, the first time corresponds to a beginning of a first process and the second time corresponds to an ending of a second process. In an example, the method incudes processing, using an engage engine, the historical data to identify a task to be outputted to the human user, the task being one of a plurality of tasks stored in memory of a computing device and generating, using a logic therapy block, an output based upon the task.
In an example, the task is associated with a content, the content being configured to transmit to the human user by one of a plurality of transmission events selected from a text message, a voice message, a light notification, or a mechanical vibration.
In an example, the method further comprising inputting data from the human user into the memory of the computing device, the data associated with a total sleep time, a time to fall asleep, a wake up time, and a wake episodes between the first time and the second time; and transferring the data into the engine to update the history of the sleep data.
In an example, the plurality of sensing devices include an rf sensor, a light sensor, one or more microphones, a mechanical motion sensor, a temperature sensor, a humidity sensor, an image sensor, a pressure sensor, a depth sensor, or an optical sensor.
In an example, the engine includes various features. As an example, the engine comprises a pre-trained model composed of a plurality of statistical signatures. Each of the plurality of statistical signatures is associated with a different sleep stage. In an example, each of the plurality of statistical signatures is associated with a selected group of sensors and is associated with the classification. In an example, the engine also includes a detector module configured to receive an incoming stream of information from the plurality of signals from the select group of sensors and configured to perform a statistical inference based upon a plurality of current observed signals and the pre-trained model, the pre-trained model being provided for the history of the sleep.
In an example, the engage engine has various features. As an example, the engage engine comprises a plurality of pre-trained therapies configured from a user age, sex, BMI, and one or more sleep quality metrics. Each of the pre-trained therapies is configured to provide the task to the human user and configured to be adjusted in a frequency and an intensity based upon the feedback and one or more objective sleep metrics being monitored. In an example, the engage engine is configured to perform statistical inference to adjust the task by correlating the sleep metrics with the feedback.
In an example, the method comprises performing steps of continuing for third time to a fourth time, and performing the steps of continuing for an Nth time to an Mth time to form a plurality of historical data corresponding to a four week period. In an example, the output comprises a digital cognitive behavioral therapy output. In an example, the output can be selected from an audio message transmitted to the human user, a mechanical vibration to the human user, a light emitted on the human user, on-screen instructions for the user, or changing an environmental setting like light or temperature, among others.
In an example, the output comprises an audio conversation between the engine and the human user in an interactive manner. In an example, the output is provided interactively with the human user or at a designated time. In an example, the output is automatically generated using the logic therapy block.
In an example, the plurality of signals comprise a motion signal, a vital organ signal, a heart rate, a breathing rate, a spatial location of the human user, or a spatial configuration of the human user.
In other examples, the method includes initiating a wind down routine for the human user based upon processing the historical data using the engage engine. In an example ,the historical data includes at least information on a heart rate and a breathing rate. In an example, the output comprising information regarding a sleep window for the human user. In an example, the output comprising information related to a stimulus control for the human user. In an example, the output is related to an emotional state of the human user. These and other features include variations, modifications, and alternatives.
In an example, the present techniques provide one or more benefits, and/or advantages. In an example, the present techniques achieve behavioral changes through an interventions-sensing feedback framework using a combination of sensing techniques, artificial intelligence techniques, and active feedback mechanisms. In an example, the present techniques can be achieved using conventional hardware, software, and systems. These and other benefits are described throughout the present specification and more particularly below.
In an example, to understand the present techniques, we have provided the following terms, although there can be variations, modifications, and alternatives.
Cognitive Behavioral Therapy (CBT) is a therapy designed to improve mental health using “action-oriented” external stimulation or interventions. CBT has been effective in treating depression, anxiety, insomnia, obesity and many other related mental conditions.
Cognitive Behavioral Therapy for Insomnia (CBTI) is a particular therapy of CBT that is focused on treating sleep habits and behaviors to improve sleep, ease falling asleep and staying asleep.
CBTI therapy process is often guided by a therapist that uses initially a screening questionnaire of the subject, then followed by a guidance of a specific set of tasks the subject is to be performing on their own, mostly around habit forming to achieve better sleep. Follow-up therapy meetings with the therapist occur on following occurrences where the therapy can be adjusted according to the input given by the subject on their ability to execute and the impact of the tasks they conducted on their sleep outcome.
Sleep sensing is a process of using sensors on a sleep subject to classify their sleep into stages, such as: Wake, Deep sleep, Light Sleep, REM (Rapid Eye Movement). In an example, the classification can be done manually by an experienced sleep technician or automatically using a machine computerized model trained for this task using artificial intelligence according to an example of the present invention. Additional statistics that are based on such a sleep analysis can provide the whole night metrics. For example Total sleep time (TST), Wake after sleep onset (WASO), Sleep efficiency (SE), Sleep onset latency (SOL), and others.
Deep Engage is a novel concept of sleep improvement technique such as CBTI, that is using sensing of the sleep subject to improve the success of the sleep therapy outcome. The concept is comprised of the following functional blocks, although there may be modifications, variations, and alternatives.
Sleep sensing/staging block: The sleep sensing/staging block provides an automated sleep stages analysis and generates the whole night statistics. It also improves over time by using feedback from the user surveying block that helps personalize the model of the sleep to represent that user sleep better in future nights. It also performs a post-night processing to tweak the sleep sensing model to be more sensitive/less sensitive for missed episodes of wake during the night.
CBTI block: The CBTI block provides the interface to the user, where suggested tasks are offered to the user. This can be fully automated using machine generated content (through text, voice messages or light notifications such as LEDs blinking pattern) or partially-automated using information and insights provided to a therapist.
User surveying block: The user surveying block makes requests by asking the user on their last night experience and ask their estimation to sleep parameters, such as total sleep time, time to fall asleep, wake up time, wake episodes during the night etc. This feedback from the user is being fed to the Sleep sensing block for re-calibration and tweaking of the model to provide a better personalized sleep model. The innovation here is the ability to automate this data collection by text message, using app notification, over conversational chatbot or other means.
Logic therapy block: The logic therapy block is where the offered tasks are being selected based on analysis of previous analyzed nights of that subject, latest sleep related activities, success or impact of previous tried therapy suggestions etc. The outcome of this block is a guided plan of CBTI tasks interaction to be run in the next nights with adjusted selection, intensity, different triggering activation (specific times or following specific events detected by the system). The technique conducts a long engagement with the user that learns and adapt to the user patterns, habits around sleep over time. By measuring the therapy outcomes a personalized therapy can be adjusted to be more impactful over time.
Sensing of the sleep of a subject and the sleep environment is conducted by a multitude of sensors, including, but not limited to, a wireless sensor, light level sensor, motion sensors, acoustic sensors, microphones in an example. In an example, sensing can occur using any of the sensing techniques described herein or outside of the present specification. Further details of the present techniques can be described below in reference to the following Figures.
In an example, the sense block includes hardware and software to detect (intensity and frequency) and spatial characteristics based upon time or other frequency a variety of activities including ambient light level, temperature, and other information. In an example, the sense block also keeps track of the time of day, day in the week, calendar, weather, or other external information. In an example, the sense block includes a contextual tracker, bounding box tracker, and vital signs, tracker, among others.
In an example, the process includes a process for learning, including a contextual state via the contextual tracker. The learning process maintains historical patterns from sensed information. The historical patterns can be spatial “Micro-location”. The patterns can also include schedule, sleep/stress, and action. The learning process also includes an engagement process and related block. Further details of the learning process are described below.
As shown, contextual state is determined using an engine that processes the sensed information. In an example, the contextual state can include “Trying to fall asleep,” “Asleep”, among other. Other contextual states include trying to get up from bed, abnormal, taking a shower, getting dressed, among others.
In an example, the process includes an engagement block. The block provides for an output to the user. The output can include an automated night light, personal insights, a positive presence signal, an alert, guided breathing or other activities, and guided start of day exercise routine, each of which can be output via audio and/or audio video. Of course, there can be other variations, modifications, and alternatives.
To prove the principles and operation of the present techniques, we provided examples of implementing the present techniques in hardware and software. Such examples are merely illustrative, and one of ordinary skill in the art would recognize other variations, modifications, and alternatives.
During the initial installation of the device inside a user bedroom, the device RF sensor records a signature of the radar signal when a person is inside the bed. Similarly, the device records a signature of the radar signal when a person is in the bedroom outside of the bed. After this initial training, the device from that point onwards will keep comparing in real-time the current observed signature of the radar signal and compare it against the pre-recorded signatures of the “in-bed” and “out-of-bed” scenarios. The device then uses statistical methods to compare the signatures' resemblance and determines what is the most likely scenario observed in the bedroom—“in-bed” or “out-of-bed”. This information about the user gives, in real-time, the ability to monitor if the user is entering the bed, or leaving the bed, and create interventions that are based on this user's state/scenario.
The present technique has accumulated many recorded and monitored nights of sleep of many people using an RF sensor. The recorded nights were recorded alongside third-party sleep monitoring devices that provided estimated stages of sleep (e.g. “REM”, “deep sleep”, “light sleep”, “wake state”). Using a statistical model that learns from the third-party devices labeling of the sleep stages, a new statistical model was generated that creates the necessary correlation between the observed signal from the RF sensor and the sleep stages labels. Such correlation is used to generate for each sleep stage the reciprocal set of signal signatures associated with that sleep stage. For example, REM stage is distinct from other sleep stages due to rapid body movement, elevated heart rate and elevated breathing. These patterns are all generating small amounts of vibrations, an RF signature, that are captured with the RF sensor and observed by the device. The trained model is then used to generate in real-time the sleep stage estimates of newly recorded night using the RF sensor in real-time.
In an example, the present technique uses a model that is performing a correlation between the pre-recorded signatures of the sleep stages and compares it against the pre-trained signatures of the sleep stages. The device then uses statistical methods to compare the signatures' resemblance and determines what is the most likely sleep stage observed currently. This information about the user gives, in real-time, the ability to monitor if the user is awake or asleep, and creates interventions that are based on this user's sleep state—e.g., sounds, lights or text/recorded messages.
In an example, the present technique provides for in-time stimulus, triggered by sensing of the bed room and location and activities of the user at precise time periods. In an example, the technique provides for an ability to measure the particular stimulus (including intensity, choice) effect on that user and given the particular circumstances (environmental conditions, history of users)—quantify the impact for the combo of stimulus-environment-user state. In an example, the present technique provides for an ability to learn and adapt the stimulus based on previous interactions with that user.
In an example, the present method and system can also provide for a predictive model to allow for the following:
The ability to predict user's emotional state (anxiety, valence) and use it to provide personalized cognitive therapy. Emotional state is estimated based on a few signals. The research literature has indicated a strong correlation between emotional stress and the heart rate, heart rate variability and sleep movement. All of these signals are being monitored using the RF sensor, and allow to create an indication when they become elevated and could indicate a stress level.
The ability to predict a user's action before it actually happens. This is done by first training a machine learning model with the RF signal that leads to a particular user action of interest. The model focuses on the preceding user observed signal and creates an estimator to give an estimate of this action to happen soon. For example, the user leaving the bed during the night is an action of interest. During the minutes prior to that, the user is exhibiting movement restlessness, changes in vital signs and sleep stages. The device then estimates the user's intention to leave bed soon, before it happens.
The sleep tracking is estimating sleep stages of the user based on a pre-trained machine learning model. The model is generic and applies to the user profile (based on age, sex, BMI etc.). Personalization of the sleep tracking is happening when the sleep stages estimates are also based on historical monitored sleep from previous nights of a particular user. The information contained in previously monitored night of a user gives the ability to self-correct and adjust to model to better reflect an individual unique sleep pattern. For example, the generic sleep stages model estimates someone being asleep in the beginning of the night, while understaging from a user feedback that that was a wrong estimation. The model takes the feedback and adjust the model to be prepared better for the next observed night, for being more sensitive to wake state associated signal to be more likely to detect the wake phase at the beginning of the night.
Therapy can be automated or partially automated. The automated part of the therapy is considering the user scenario and analysis of previous nights' sleep. However, once a therapy is offered, a user feedback should measure the success of the suggested therapy. The personalization of the therapy is done by adjusting the therapy to the individual personal impact of previous suggested therapy steps and intensity, and mainly focusing on what is providing the impact for that user. For example, a user is given an instruction to change the time they go to bed by 2 hours. If after a week no improvement is registered by monitoring the sleep quality metrics, an alternative therapy method can be suggested, or increase of the time from 2 to 4 or 5 hours can be suggested.
Hot flashes appear along others rapid changes in user hear and breathing signal. Using the signals coming from the rf sensor, the device is monitoring appearance of such rapid changes and indicate a detection of the hot flashes episodes.
Having described various embodiments, examples, and implementations, it should be apparent to those skilled in the relevant art that the foregoing is illustrative only and not limiting, having been presented by way of example only. Many other schemes for distributing functions among the various functional elements of the illustrated embodiment or example are possible. The functions of any element may be carried out in various ways in alternative embodiments or examples.
Also, the functions of several elements may, in alternative embodiments or examples, be carried out by fewer, or a single, element. Similarly, in some embodiments, any functional element may perform fewer, or different, operations than those described with respect to the illustrated embodiment or example. Also, functional elements shown as distinct for purposes of illustration may be incorporated within other functional elements in a particular implementation. Also, the sequencing of functions or portions of functions generally may be altered. Certain functional elements, files, data structures, and so one may be described in the illustrated embodiments as located in system memory of a particular or hub. In other embodiments, however, they may be located on, or distributed across, systems or other platforms that are co-located and/or remote from each other. For example, any one or more of data files or data structures described as co-located on and “local” to a server or other computer may be located in a computer system or systems remote from the server. In addition, it will be understood by those skilled in the relevant art that control and data flows between and among functional elements and various data structures may vary in many ways from the control and data flows described above or in documents incorporated by reference herein. More particularly, intermediary functional elements may direct control or data flows, and the functions of various elements may be combined, divided, or otherwise rearranged to allow parallel processing or for other reasons. Also, intermediate data structures of files may be used and various described data structures of files may be combined or otherwise arranged.
In other examples, combinations or sub-combinations of the above disclosed invention can be advantageously made. The block diagrams of the architecture and flow charts are grouped for ease of understanding. However, it should be understood that combinations of blocks, additions of new blocks, re-arrangement of blocks, and the like are contemplated in alternative embodiments of the present invention.
The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense. It will, however, be evident that various modifications and changes may be made thereunto without departing from the broader spirit and scope of the invention as set forth in the claims.
The present application is a continuation of U.S. patent application Ser. No. 17/401,737, filed Aug. 13, 2021, which application is a continuation-in-part of U.S. application Ser. No. 17/388,688, filed Jul. 29, 2021, which is a continuation of U.S. application Ser. No. 16/937,348, filed Jul. 23, 2020, issued on Jan. 4, 2022 as U.S. Pat. No. 11,218,800, which application is a continuation of U.S. application Ser. No. 16/272,188, filed Feb. 11, 2019, and issued as U.S. Pat. No. 10,743,100 on Aug. 11, 2020, and is related to U.S. application Ser. No. 16/103,829, filed on Aug. 14, 2018, U.S. application Ser. No. 16/194,155, filed on Nov. 16, 2018, and U.S. application Ser. No. 16/194,166, filed Nov. 16, 2018, each of which is hereby incorporated by reference in its entirety.
| Number | Date | Country | |
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| Parent | 17401737 | Aug 2021 | US |
| Child | 18634657 | US | |
| Parent | 16937348 | Jul 2020 | US |
| Child | 17388688 | US | |
| Parent | 16272188 | Feb 2019 | US |
| Child | 16937348 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 17388688 | Jul 2021 | US |
| Child | 17401737 | US |
