The present disclosure relates to systems and methods that learn a user behavior, a user intent, a user habit, and a user preference and control one or more environmental conditions in response to the learning.
Automated environment control systems available today include wall-mounted controllers that require extensive programming by a user for a controller to adequately learn one or more preferences of the user. Currently available environment control systems feature limited functionality in the sense that a specific environment control system is configured to control a limited set of environment variables. For example, a contemporary environment control system may be limited to controlling only lighting in a specific localized area such as a single room in a family home. Installing multiple environment control systems to control different aspects of environment variables once across multiple areas again can turn out to be expensive and complicated for a user. There exists a need, therefore, for an environment control system that offers simplicity in operation with an ability to control multiple environmental variables, while being inexpensive to install and operate by an end user.
Non-limiting and non-exhaustive embodiments of the present disclosure are described with reference to the following figures, wherein like reference numerals refer to like parts throughout the various figures unless otherwise specified.
In the following description, reference is made to the accompanying drawings that form a part thereof, and in which is shown by way of illustration specific exemplary embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the concepts disclosed herein, and it is to be understood that modifications to the various disclosed embodiments may be made, and other embodiments may be utilized, without departing from the scope of the present disclosure. The following detailed description is, therefore, not to be taken in a limiting sense.
Reference throughout this specification to “one embodiment,” “an embodiment,” “one example,” or “an example” means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the present disclosure. Thus, appearances of the phrases “in one embodiment,” “in an embodiment,” “one example,” or “an example” in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, databases, or characteristics may be combined in any suitable combinations and/or sub-combinations in one or more embodiments or examples. In addition, it should be appreciated that the figures provided herewith are for explanation purposes to persons ordinarily skilled in the art and that the drawings are not necessarily drawn to scale.
Embodiments in accordance with the present disclosure may be embodied as an apparatus, method, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware-comprised embodiment, an entirely software-comprised embodiment (including firmware, resident software, micro-code, etc.), or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,” “module,” or “system.” Furthermore, embodiments of the present disclosure may take the form of a computer program product embodied in any tangible medium of expression having computer-usable program code embodied in the medium.
Any combination of one or more computer-usable or computer-readable media may be utilized. For example, a computer-readable medium may include one or more of a portable computer diskette, a hard disk, a random access memory (RAM) device, a read-only memory (ROM) device, an erasable programmable read-only memory (EPROM or Flash memory) device, a portable compact disc read-only memory (CDROM), an optical storage device, and a magnetic storage device. Computer program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages. Such code may be compiled from source code to computer-readable assembly language or machine code suitable for the device or computer on which the code will be executed.
Embodiments may also be implemented in cloud computing environments. In this description and the following claims, “cloud computing” may be defined as a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned via virtualization and released with minimal management effort or service provider interaction and then scaled accordingly. A cloud model can be composed of various characteristics (e.g., on-demand self-service, broad network access, resource pooling, rapid elasticity, and measured service), service models (e.g., Software as a Service (“SaaS”), Platform as a Service (“PaaS”), and Infrastructure as a Service (“IaaS”)), and deployment models (e.g., private cloud, community cloud, public cloud, and hybrid cloud).
The flow diagrams and block diagrams in the attached figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flow diagrams or block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions for implementing the specified logical function(s). It will also be noted that each block of the block diagrams and/or flow diagrams, and combinations of blocks in the block diagrams and/or flow diagrams, may be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. These computer program instructions may also be stored in a computer-readable medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable medium produce an article of manufacture including instruction means which implement the function/act specified in the flow diagram and/or block diagram block or blocks.
The systems and methods described herein are configured to modify an environment associated with a user. In some embodiments, the environment may include a room in a residence. In other embodiments, the environment may include an office space. The environment associated with the user may include parameters such as ambient lighting levels and ambient temperature levels in accordance with one or more preferences of the user. Some embodiments of the systems and methods described herein may be implemented using a combination of processing systems coupled to one or more sensors or sensing systems as described herein.
In some embodiments, environment control system includes a device 1 108, a device 2 110, a device 3 112, through a device N 114, where each of device 1 108 through device N 114 is electrically coupled to processing system 104. In particular embodiments, each of device 1 108 through device N 114 is coupled to processing system 104 via one or more wired or wireless communication links. In particular embodiments, user 116 can control each of device 1 108 through device N 114 via user inputs, as shown in
In some embodiments, processing system 104 is configured to determine, responsive to receiving a sensor input from sensing system 106 and processing the sensor input, and responsive to environment controller 102 receiving user inputs to control environmental parameters via device 1 108 through device N 114, a user interaction with environment 101. In particular embodiments, the user interaction includes user 116 altering a one or more settings associated with device 1 108 through device N 114 via environment controller 102, to set, control, or alter one or more parameters associated with environment 101. For example, user 116 may set a particular HVAC temperature level to set an ambient temperature of their choice when going to sleep at night, the user may also set an ambient lighting level using the lighting controller when occupying the bedroom, play a choice of music, and so on. Data associated with such user interactions are received by processing system 104 via a combination of inputs from sensing system 106 (such as a user location, an ambient temperature level, and an ambient light level), and via processing system receiving data via user inputs. In some embodiments, user 116 enters these inputs via a user interface associated with processing system 104. Processing system 104 then routes these user inputs to the appropriate devices from device 1 108 through device N 114 as commands to control the environmental parameters. Responsive to processing data associated with the user interaction, processing system 104 is configured to determine a user intent associated with user 116 controlling devices 1 108 through device N 114. Examples of user intent include user preferences related to temperature and ambient lighting, as well as music preferences. These preferences may be dependent on a time of the day, a day of the week, a season, a condition of environment 101 and/or a location of environment 101.
Another example of user intent includes a consistently-observed user behavior pattern (or a user habit) when user 116 enters environment 101. For example, a user, on returning home from work, may enter a living room associated with a residence of the user, and set ambient temperature and ambient lighting levels using an HVAC controller and a lighting controller respectively. The user may then go to a bedroom associated with the residence, and configure a lighting controller for a preferred ambient lighting level in the bedroom. The user may then visit a bathroom adjoining the bedroom and turn on a light in the bathroom. The user may then turn off the bathroom light, turn off the bedroom light, make their way into a kitchen associated with the residence, and turn on a light in the kitchen. Such user intent and preferences may be routinely and consistently observed by processing system 104 in response to processing system 104 receiving data from a combination of sensing system 106, and user inputs.
In some embodiments, in response to determining a user intent via a learning process, processing system 104 is configured to autonomously determine a user intent using machine learning (ML) or artificial intelligence (AI) algorithms. In particular embodiments, determining a user intent includes learning one or more user preferences based on user inputs to environment controller 102, to control device 1 108 through device N 114. Determining a user intent may also include processing system 104 learning, responsive to receiving an input from sensing system 106, an interaction of user 116 with the environment via device 1 108 through device N 114, and a habit associated with user 116. Processing system 104 is then able to autonomously control device 1 108 through device N 114 to set one or more environmental parameters in accordance with learned user preferences. For example, processing system 104 detects, responsive to receiving an input from sensing system 106, that user 116 has entered environment 101. Processing system 104 then automatically controls device 1 108 through device N 114 to set (or control) the associated environmental parameters to be consistent with the preferences of user 116 for that specific location and moment.
In some embodiments, user 116 controls device 1 108 through device N 114 through one or more user inputs. In some embodiments, user 116 enters these user inputs via a user interface associated with processing system 104. Processing system 104 then routes these user inputs to the appropriate devices from device 1 108 through device N 114. In particular embodiments, processing system 104 is configured to receive these user inputs from device 1 108 through device N 114 and log the user inputs. This log may be used as a dataset for any artificial intelligence or machine learning component associated with processing system 104, as described herein. Similarly, inputs to processing system 104 from sensing system 106 are logged by processing system 104. These inputs are logged by processing system 104, and also processed by processing system 104 to characterize the environment associated with user 116.
In some embodiments, environment 101 may be a room in a residence. In other embodiments, environment 101 may be a room in an office space. In general, an environment can be defined as an indoor region. In some embodiments, environment 101 may be comprised of a collection of indoor regions that are separated by contiguous boundaries. For example, environment 101 may be comprised of multiple rooms in an apartment or a house, an entire house, or multiple rooms in an office suite. In such cases, from a general operating standpoint, environment control system 100 may include a plurality of environment controllers such as environment controller 102, where each room in environment 101 includes one or more environment controllers with associated sensing systems and devices. In other words, each room includes, for example, one or more environment controllers and associated devices for determining a user intent and accordingly controlling the environment. Each environment controller is configured to determine and learn about a user interaction, user intent, and a user habit, and subsequently autonomously control the associated environmental parameters.
In some embodiments, an environment controller is implemented using a lighting controller that includes a keypad, as described herein. This system may consist of one or many keypads distributed throughout the environment. Each keypad has a similar user interface to that of a manual power dimmer. This embodiment presents an interface of a standard light switch/dimmer, while also including components such as a power dimmer module, a sensor module, a communication module, and a logic module. The power dimmer module is responsible for adjusting the amount of electrical energy transferred to a connected load (i.e., a device such as device 1 108) such as a light or an HVAC device. (As presented herein, the term “load” may be used interchangeably with the term “device.”)
To better understand the environment, occupants and activities, the sensor module employs various sensing technologies, as described herein. The communication module allows every keypad to wirelessly connect to all other keypads in a system, other mobile devices such as mobile phones, smart watches, and tablets, as well as the Internet if needed. In other embodiments, the communication module is utilized to connect with other remote sensor modules or remote power modules. The logic module includes a main digital controller which processes all information collected by other internal modules, other keypads in the system, other remote modules, other connected devices in the space (e.g., inputs from mobile phones) and the Internet (e.g., remote inputs). The controller then determines an appropriate action or series of actions to be taken by the system (all connected loads, connected devices and remote devices).
To allow self-programmability, environment controller 102 logs multiple parameters about the environment, occupants, other environment controllers, remote modules and its own internal hardware during every user interaction. These parameters may include light ambient, light color point, temperature, humidity, air flow, air quality, weather, occupancy state, a number of occupants, a time of the day, a calendar day, power usage, an artificial light level and other activated environment controllers. The system synchronizes these parameters across all components of the system and labels them with whatever desired loads settings based on user preferences. The system may save this labeled data in a local database, a remote database or both. After some time of manual operation collecting enough labeled data, the system may now reliably and fully automate the control of the space's settings without any user interaction. This is done by processing the database records through, for example, machine learning algorithms such as neural networks that can, with high confidence, predict the user's desired environment settings based on previous behaviors. For example, when the user enters the space (i.e. environment), one or more keypads detect the occupancy event which in turn, triggers the machine learning algorithm. This algorithm accesses current data from all keypads and compares it to previous behaviors. As a result, the system will adjust all necessary load(s) regardless of their location or how they are connected and adjust the space's settings to the user's liking. The machine learning algorithm can run locally (AI on an Edge device), in the cloud, or both and can be triggered by many other events. For example, while a user is in the bedroom and the lights are on, if the system determines that the occupants are sleeping and/or it is after midnight, the light may turn off accordingly.
Some embodiments of environment control system 100 are configured to be used as security control, fire alarm and health monitoring systems, as described herein. These embodiments avail of AI and machine learning features associated with environment control system 100 to implement these features.
Some embodiments of processing system 104 include a memory 204 that may include both short-term memory and long-term memory. Memory 204 may be used to store, for example, data logs generated by processing system 104 as discussed previously. Memory 204 may be comprised of any combination of hard disk drives, flash memory, random access memory, read-only memory, solid state drives, and other memory components.
In some embodiments, processing system 104 includes a device interface 206 that is configured to interface processing system 104 with device 1 108 through device N 114. Device interface 206 generates the necessary hardware communication protocols and power associated with one or more interface protocols such as power on/off control, phase dimming, power line communication, a serial interface, a parallel interface, a wireless interface and so on.
A network interface 208 included in some embodiments of processing system 104 includes any combination of components that enable wired and wireless networking to be implemented. Network interface 208 may include an Ethernet interface, a WiFi interface, a cellular interface, a Bluetooth interface, a near-field communication interface (NFC), and so on.
Processing system 104 also includes a processor 210 configured to perform functions that may include generalized processing functions, arithmetic functions, and so on. Any artificial intelligence algorithms or machine learning algorithms (e.g., neural networks) associated with environment controller 102 may be implemented using processor 210.
In some embodiments, processing system 104 may also include a user interface 212, where user interface 212 may be configured to receive commands from a user, or display information to the user. User interface 212 enables a user to interact with environment controller 102 and control device 1 108 through device N 114. Commands received from a user include commands to control device 1 108 through device N 114, to set environmental parameters that are consistent with one or more preferences associated with the user. Examples of user interface 212 are presented herein.
Some embodiments of processing system 104 include an artificial intelligence module 214 that is configured to implement machine learning (ML) and artificial intelligence (AI) algorithms associated with environment controller 102. Details of artificial intelligence module 214 are provided herein.
In some embodiments, processing system 104 includes a sensor suite interface that is configured to implement the necessary communication protocols that allow processing system 104 to send and receive data to and from sensing system 106.
In some embodiments, artificial intelligence module 214 includes a user interaction module 302 that is configured to read and log data associated with an interaction of user 116 with the environment, where the user interaction includes user 116 controlling device 108 through device N 114 via environment controller 112, as well as user movements and occupancy patterns in the environment.
A user intent predictor 304 included in artificial intelligence module 214 is configured to use machine learning algorithms to predict a user intent such occupying a living room in the morning and performing a sequence of actions that include turning on a light in the living room, opening up one or more window shades, adjusting a temperature associated with the environment, playing music and so on. User intent predictor 304 enables artificial intelligence module 214 to perform predictive control over the environment based on a most probable guess related to an anticipated intent of user 116. For example, user intent predictor 304 might enable environment controller 112 to autonomously control device 1 108 through device N 114 and set environmental parameters consistent with user preferences associated with user 116.
In some embodiments, artificial intelligence module 214 includes a user habit learning module 306 that is configured to use artificial intelligence techniques and learn one or more habits associated with a user. For example, user habit learning module 306 may be configured to learn the sequence of habits of a user such as user 116 when the user occupies a living room in the morning as described above. Data learned by user habit learning module 306 may be used as an input to user intent predictor 304 to help user intent predictor 304 make more accurate determinations of a probable user intent.
Some embodiments of artificial intelligence module 214 include a user preference module 308 that is configured to learn and store one or more user preferences associated with a user of environment control system 100 such as user 116. As described above, user preferences include temperature and ambient lighting, as well as music preferences. User preferences stored by user preference module 308 are used by user intent predictor 304 to control device 1 108 through device N 114 so that appropriate environmental parameters are set and maintained in accordance with the user preferences.
A target and LSOR tracking 310 included in some embodiments of artificial intelligence module 214 is configured to track a location of a target and place the target in a load-specific occupancy region (LSOR). A target is defined as one of a user, a pet, an adult, and a child. In some embodiments, target and LSOR tracking 310 is configured to track multiple targets and multiple LSORs. Since most of the time a target of interest is a user of the system or an occupant of the environment, the term “occupant”, the term “user”, and the term “target”, may all be used interchangeably as presented herein. An LSOR is defined as an occupancy region associated with a load in an environment. Essentially, an LSOR is a portion, or section, of the environment, that is usually occupied by the user when using a specific load in the environment. An LSOR can be sensed by (or is within a field of view of) environment controller 102. Target and LSOR tracking 310 is configured to characterize and track different aspects of the targets and LSORs, such as classifying any occupants in an LSOR, performing coordinate transformations, and so on. Details of target and LSOR tracking 310 are provided herein. Some embodiments of target and LSOR tracking 310 perform classification functions using a neural network, as described herein.
In some embodiments, a single environment controller may not be sufficient to fully sense a region associated with a load in an environment; the associated LSOR may cover a portion of the space associated with the environment. To fully characterize the space associated with the environment, multiple environment controllers may be used, where an LSOR associated with each controller covers separate regions of the environment. This aspect of operation is described herein.
A clustering algorithm 406 included in some embodiments of target and LSOR tracking 310 is configured to read in position data associated with one or more users (occupants, targets) in an environment, and output a polar boundary for a region or a map associated with an associated target occupancy pattern. A polar boundary encompasses a three-dimensional field of view of a sensing suite associated with an environment controller. The output of clustering algorithm 406 is processed by a region coordinate transform 408 that is configured to transform the polar boundary for each region or map to a corresponding boundary in a Cartesian coordinate system. In some embodiments, an LSOR algorithm 410, bounds one or more outputs generated by clustering algorithm 406 output map or region in a way it can be associated with a specific device or load. In some embodiments, an association logic is triggered by a user activating a specific load, and is terminated when the user deactivates the load, or after a predetermined period of time has expired. This load activation and deactivation trigger could be generated by monitoring user inputs associated with controlling the load, or environment controller 102 receiving a sensing input associated with a change in the environment as a result of the user activating or deactivating the load. In some embodiments, the polar boundary encompasses the three-dimensional field of view of the sensing suite associated with an environment controller. The output of clustering algorithm 406 is processed by a region coordinate transform 408 that is configured to transform the polar boundary for each LSOR to a corresponding boundary in a Cartesian coordinate system. An LSOR merge 412 merges any overlapping LSORs to create one or more composite LSORs, the boundaries of which are defined in the associated Cartesian coordinate system. An embodiment of target and LSOR tracking 310 may also include an LSOR assignment 414 that combines data associated with the composite LSORs and the x-position, a y-position, and a z-position associated with each user to generate a count of targets within each LSOR. In some embodiments, LSOR merge 412 is also configured to merge any overlapping regions associated with overlapping occupancy patterns.
Some embodiments of sensing system 106 include a humidity sensor 604 that is configured to generate data associated with determining the humidity of a particular environment. Based on a measured humidity level, environment controller 102 can control device 1 108 through device N 114 and/or an HVAC system in accordance with a user preference. Humidity sensor 604 is also useful when the environment is associated with a bathroom. In this case, the environment controller 102 characterizes the environment as a bathroom based on recording higher humidity conditions as compared to lower humidity conditions that would be present elsewhere in a residential home.
In some embodiments, sensing system 106 includes an ambient light sensor 606 that is configured to generate data associated with measuring ambient light levels. Based on a measured ambient light level, environment controller 102 can control device 1 108 through device N 114 in accordance with a user preference. For example, if a user enters a bedroom and the lights are off, environment controller detects a presence of the user using, for example, radar 602, and determines that the lights in the bedroom are turned off using ambient light sensor 606. Based on this information and learned user preferences, environment controller 102 can then turn on one or more lights and adjust the associated lighting levels in accordance with learned user preferences. Ambient light sensor 606 is also useful for maintaining a lighting condition of the environment (light level and color point) to a specific desired condition. For example, ambient light sensor 606 could detect a decrease in ambient light level and a change in the color point due to a sunset event in an environment with outside windows, and as result the processing system 104 adjusts device 1 108 through device N 114 to maintain a fixed desired lighting condition for the environment. In some embodiments, light levels can also be adjusted by environment controller 102 using powered window shades.
A temperature sensor 608 is included in some embodiments of sensing system 106. In some embodiments, temperature sensor 608 is configured to generate data associated with an ambient temperature of the environment. Processing system 104 is configured to determine the ambient temperature responsive to processing this data and, if necessary, control an HVAC system to change the ambient temperature in accordance with user preferences. In some embodiments, temperature sensor 608 can also be configured to generate data corresponding to abnormally high temperatures in the environment that could be associated with, for example, a fire. In such an event, processing system 104 is configured to process this data and generate an alarm if the ambient temperature rises above a certain threshold. The alarm generated by processing system 104 may be any combination of a local alarm and a distress signal to local authorities and rescue teams.
In some embodiments, sensing system 106 includes an air quality sensor 610 that is configured to generate air quality data associated with measuring ambient air quality of an environment. Air quality sensor may be configured to measure, for example, a level of carbon monoxide in the air, or the presence of allergens in the air. Responsive to processing the air quality data, processing system 104 can be configured to generate an alarm if the air quality drops below a certain threshold. The alarm generated by processing system 104 may be any combination of a local alarm and a distress signal to local authorities and rescue teams.
In some embodiments, sensing system 106 includes a gyroscope 612 and an accelerometer 614 that are configured to generate motion data. Motion data may include vibration data that may be generated by a user in the proximity of environment controller 102. In some embodiments, vibration data may be generated by natural phenomena such as earthquakes. If the magnitude of the vibration data as processed by processing system 104 exceeds a certain threshold, processing system 104 generates an alarm. The alarm generated by processing system 104 may be any combination of a local alarm and a distress signal to local authorities and rescue teams.
Some embodiments of sensing system 106 include a microphone 616 that is configured to receive audio signals from the environment and generate audio data. In some embodiments, microphone 616 is a micro electromechanical systems (MEMS) microphone. In some embodiments, audio data generated by microphone 616 is processed by processing system 104. A voice detection and recognition system associated with processing system can be used to detect a presence of a user in the environment. Also, recognizing and characterizing the voice of a user can be used to identify a particular user. Once a particular user is identified, environment controller 102 can then control device 1 108 through device N 114 to set the environmental parameters in accordance with previously learned preferences associated with the particular user. Microphone 616 can also be useful in detecting pet presence and their type after recognizing their sound. For example, a barking dog.
In particular embodiments, processing system 104 may be configured to generate one or more alarms responsive to processing audio data that may be characterized as a distress call. In the event that a user is in distress, a cry for help can be used to generate an alarm and a distress signal to alert local authorities and rescue teams.
Some embodiments of sensing system 106 include a smoke detector 618 that is configured to generate smoke data associated with detecting particles of smoke in the air. Such smoke data could indicate a presence of a fire in the environment. In this case, processing system 104 is configured to generate an alarm if smoke data processing indicates a presence of smoke in the environment. The processing system may also generate a distress signal to alert local authorities and rescue teams.
In some embodiments, sensing system 106 includes an ultrasonic sensor 620. Ultrasonic sensor 620 is configured to generate and sense one or more ultrasonic waveforms that are used for detecting and locating one or more users (occupants) in the environment in a manner similar to that used by radar 602.
Some embodiments of sensing system 106 include an infra red sensor 622 that is configured to generate infra red data associated with a presence of a user or an occupant in an environment. Infra red data generated by infra red sensor 622 is processed by processing system 104 to detect a presence of a user in the environment and their proximity to the environment controller 102. Infra red sensor 622 may also be used to detect an unauthorized occupant in the environment, responsive to which processing system 104 may be configured to generate an alarm.
In some embodiments, sensing system 106 includes a camera 624 that is configured to generate visual data associated with one or more users in the environment. This visual data may be processed by processing system 104 to perform, for example, face identification and other user detection using machine learning methods. Subsequently, processing system 104 can command device 1 108 through device N 114 to adjust environmental parameters in accordance with learned user preferences. In other embodiments, camera 624 may be used as a depth sensor to determine a location of the user (e.g., user 116) in a local coordinate system associated with environment controller 102.
A power monitor 626 included in some embodiments of sensing system 106 is configured to monitor power levels being consumed by environment controller 102 and by device 1 108 through device N 114. Associated power data can be used to measure energy consumption and adjust the environmental parameters accordingly to save energy. An output of power monitor 626 is used for troubleshooting and health monitoring, and also to determine if any component of environment controller 102 or device 1 108 through device N 114 is non-functional.
In some embodiments, sensing system 106 includes a pressure sensor 628 that is configured to measure an altitude, or height, associated with environment controller 102. In particular embodiments, data from pressure sensor 628 is used to determine an altitude, or a Z coordinate, of an object in the environment as sensed by sensing system 106. Details about this process are provided subsequently. Pressure sensor 628 can also be useful in detecting any doors and windows of the environment being opened or closed.
In some embodiments, sensing system 106 includes a magnetometer 630 that, in conjunction with accelerometer 614 and gyroscope 612 functions as an inertial measurement unit (IMU) that is configured to make angular measurements associated with environment controller 102.
In some embodiments, the occupant classification may include generating a set of polar coordinates for each user, in a coordinate system local to the corresponding environment controller. This operation may be performed by occupant classifier 402. Next, at 904, the method performs a coordinate transformation from each set of the occupants' polar coordinates. In some embodiments, this step is performed by occupant coordinate transform 404 that generates a set of transformed coordinates in a Cartesian coordinate system for each user, where each set of transformed coordinates is associated with a global Cartesian coordinate system that is associated with the entire environment. An output of this step is an XYZ position associated with each occupant in the global Cartesian coordinate system. In some embodiments, the XYZ position is referred to as “XYZ unified coordinates.”
To construct a common coordinate system reference that implements the XYZ unified coordinate system, a range between each environment controller in the environment must be determined. In some embodiments, this is accomplished by using a received signal strength associated with an RF signal generated by an environment controller, digitally-modulated radar waveforms, or a unique motion profile generated by a speaker or a vibrating reflector and can be uniquely detected by the sensing system such as radar 602. Once a range of each environment controller in an environment is determined relative to a specific environment controller, a system of n×(n−1)/2 equations can be generated, where n is a total number of environment controller in the environment of interest. Next, a reference environment controller is selected as an origin of the global XYZ coordinate system. This results in 2×(n−1) unknowns, with the multiplication factor of two being used to account for the X and Y coordinates. This implies that as long as n≥4, the method 900 can always resolve these equations. For example, if a specific environment controller, using radar 602, determines an occupant range as Rocc and a corresponding azimuth angle as Azocc, then assuming that method 900 has determined an XY position of each environment controller, step 904 performs its computation by applying the following equations:
X
occ
=X
controller
+R
occ×cos(Azocc−Azcontroller)
Y
occ
=Y
controller
+R
occ×sin(Azocc−Azcontroller)
In the above equations, AZcontroller is a directional angle shift between a specific environment controller and the controller selected as the origin of the global XYZ coordinate system. This angle could be determined by the aid of an Inertial Measurement Unit (IMU) or a magnetometer sensor associated with an associated environment controller. Speed information about the object can also be used between different environment controllers to identify objects. In order to resolve the third dimension, Z, the environment controllers rely on data from pressure sensor 628 that provides altitude measurements with good absolute accuracy. Step 904 resolves a Z coordinate for a detected object (or occupant) by applying the following equation:
Z
occ
=Z
controller
±R
occ×sin(Alocc−Alcontroller)
where Zcontroller is measured by pressure sensor 628, and Alocc−Alcontroller is a corresponding altitude angle in reference to the origin controller.
In some embodiments it is possible to use radar data to translate the polar position data to a 3D global Cartesian coordinates (XYZ) directly without relying on pressure sensor 628. One common method to measure the range between multiple environment controllers is to detect a Bluetooth Low Energy (BLE) signal strength, where each environment controller is equipped with a BLE module (not shown).
Due to the nature of indoor environments, where multiple obstacles may be present in the way of a propagating signal, the received signal's energy level and path may be impacted along the way. These disturbances can noticeably impact the system's ability to accurately detect absolute position. To account for this, the system can take advantage of radar 602 and its more accurate range measurements as well as angular information. This can be done for the portion of environment controllers that are in a directional coverage of each other's radar. The idea is based on a “time of flight,” or “ToF” concept. Since the radar used employs a variable frequency continue pulse transmitter, a unique signature information can be modulated to identify each environment controller. For example, an environment controller K1 can now transmit a special ToF signal. An environment controller K2 can detect the transmitting source and respond with another ToF signal delayed by a fixed known amount from the moment K2 received signal from K1. Once K1 receives and detects K2 ToF signal, it can now use the timestamp information of this signal and calculate the time of flight between K1 and K2 as shown in the equation below:
ToF(K1−K2)=K1ReceiveTimestamp−K1TransmitTimestamp−K2FixedDelay
Once the ToF is known, the range can be calculated as follows:
Range(K1−K2)=ToF(K1−K2)×c/2,
where c is the speed of light. The above method eliminates the need to have a synchronized clock between controllers. In other embodiment, a synchronized clock between controllers can be implemented and utilized for the above calculation. Hardware associated with radar 602 can also take advantage of the multiple-input, multiple-output “MIMO” phased array antennas configuration and beam forming concepts to produce accurate angular measurements. This added radar information for the portion of environment controllers in the system that are in each other's range, can be combined with the less accurate Bluetooth LE position information described above, to greatly improve the accuracy of the overall system. In other embodiments, the range is measured using radar sensor 602 in the same way the system measures occupants' positions. This done by having the target controller enable a built-in speaker or a vibrator with possibly a magnifying reflector to oscillate at a certain and predetermined speed profile. This unique motion profile can then be used by the transmitting controller to isolate the target controller data from all other objects in the environment and as a result acquiring the target position data (including range and direction).
In a parallel process, step 906 detects user activation and deactivation of a specific load and triggers a clustering algorithm 908 to generate a map tacking the activating user while the load is active or for a specific amount of time. This sequence of steps allows the system to self-define LSORs. At 908, a clustering algorithm operates on the occupant map to generate multiple LSOR polar boundaries, where each LSOR polar boundary is a boundary associated with a specific LSOR in a local coordinate system corresponding to an associated environment controller. At 910, a coordinate transformation from each LSOR polar boundary transforms each LSOR polar boundary into a Cartesian coordinate system, to construct an LSOR XYZ boundary for each LSOR. The transformation from polar to Cartesian coordinates is performed using the methods described above for step 904, and each LSOR XYZ boundary is referenced to a global Cartesian coordinate system associated with all environment controllers in the environment. At 912, any overlapping LSORs are merged together to generate a plurality of modified LSOR XYZ boundaries. In some embodiments, a list of final LSORs is equal to n, where n is a number of loads in the environment. Prior to a merge, an LSOR is associated with a particular environment controller and a load zone in the environment. Post-merge, an LSOR is associated only with the corresponding load zone.
For the LSOR boundaries to be accurate approximations, it is essential to only monitor activating occupants' movements and ignore all other occupants. For example, if an occupant activates the bedroom light and occupies the bedroom space only while other rooms are occupied by other occupants, the system must ignore those occupants' movements since they were not the ones who activated the bedroom light. This will allow the bedroom light LSOR to only cover the bedroom space and not include adjacent rooms. In other words, environment control system 100 can be designed to track the location of a selected user in an environment that includes a plurality of users. In this case, environment controller 102 receives the user input from the selected user and controls the devices in accordance with the user input. In embodiments where only a sensor input is used to detect a user activation or deactivation of a load, an occupant's movements could be compared against a corresponding load transition event to distinguish the activating user from the other users. For example, when detecting a sudden increase in an ambient light level, this transition could be associated with an activation event, and the occupants' movement profiles could be evaluated to determine the activating user if there are more than one user. For example, the activating user motion profile would most likely experience a major motion associated with the user accessing the lighting controller, which may be followed by a short period of steady motion at the moment of the light transition followed by another major motion. This motion profile could be uniquely differentiated from all other users' motion profiles. In some embodiments, user preferences associated with the selected user are given priority over user preferences associated with other users in the environment.
Finally, at 914, method 900 uses the XYZ position associated with each occupant and the LSOR boundaries to generate an LSOR assignment list in the environment. Once the method 900 defines LSOR boundaries as described in step 912, it then can assign an LSOR value to each detected occupant based on their position in reference to data associated with LSOR boundaries. This is done in step 914. Once a list of occupants and their LSORs assignments is constructed, step 914 counts a number of occupants (i.e., a number of people) in each LSOR. This count is used as a basis for determining how environmental parameters need to be controlled or modified. Another important measurement for environment control system 100 is a total count of occupants in the space which can also be calculated at step 914. In order for this value to be accurate, the count process must consider that some occupants may be occupying more than one overlapping LSORs. However, since occupants' positions are identified against the unified XYZ coordinates system defined earlier, overlapping occupants will have the same coordinates values. As a result, the system can ignore overlapping occupants and an accurate count can be calculated.
An LSOR is a region that is usually occupied when a specific load (i.e., a device) is active. This level of abstraction is proven useful because it allows the algorithm to have a better understanding of how the space is used with relation to the loads'settings. For example, when placing an occupancy sensor in a room and the desire is for that sensor's occupancy information to deliberately control that room's light only without affecting adjacent rooms, then the placement of the sensor must be done in a way such that its range of detection covers the whole room and only that room. In this sense, the LSOR for that load is defined by that room area. In contemporary systems, a customer (or installer) accomplishes this by making proper adjustments to align the sensor's detection region to the desired occupancy area, which can prove inconvenient, tedious and inaccurate. During the training phase associated with self-defining an LSOR, when an occupant activates a specific load, the system logs the occupant's movements until they deactivate the same load or a predefined time has expired, whichever event occurs first. In other words, the environment control system 100 logs a temporal history of an occupant's movements in an environment during load activation, allowing the system to dynamically detect any boundaries for a region or a room in the environment that is serviced by that specific load.
In some embodiments, installation 1000 includes a lighting controller 1 1002, a lighting controller 2 1004, a lighting controller 3 1006, through a lighting controller M 1008. In particular embodiments, lighting controller 1 1002 through lighting controller M 1008 are installed in an environment and individually include all functionalities of environment controller 102. A user 1010 is able to individually control settings associated with each of lighting controller 1 1002 through lighting controller M 1008, to control one or more environmental parameters through a plurality of devices (not shown in
When lighting controller user interface 1200 is first installed, it runs in a manual mode, where pressing circular main button 1204 toggles a power supply to a load electrically coupled to lighting controller user interface 1200. Rotating adjustment dial 1202 in “manual mode,” amplifies or reduces the connected load level depending on a direction of rotation. Once the associated lighting controller has collected enough information about the environment and its occupants' habits, the lighting controller switches to an autonomous mode, where settings associated with environmental parameters are be controlled automatically by the lighting controller without a need for the occupants to interact with the installed lighting controller. However, in situations where existing environmental parameter settings do not match the user's liking, they can either tune in the active system's output by turning adjustment dial 1202, or they can press circular main button 1204 which in this mode, acts as a “dislike” button. An associated “dislike” function triggers an autonomous environment control algorithm (described subsequently) associated with processing system 102 to re-run, this time with the added information of the customer's disliking the current environmental parameters. This data improves the algorithm's next prediction odds in matching the user preference. A second press within a short period switches the mode of operation from “autonomous” back to “manual” for brief period of time to avoid any confusion. In some embodiments, this period of time may be a minute long.
Method 1300 enables several applications of environment control system other than controlling environmental parameters. One such application is a security system that enhances the safety of the occupants and the environment. Such a security system can be controlled, armed or disarmed via any lighting controller in the environment. It can also be armed or disarmed by an application software running on, for example, a user mobile device. Since every environment controller is equipped with radar such as radar 602 that is capable of detecting motion, as well as having an ability to differentiate between humans and other types of objects (ex: pets), once the user arms the system through a user interaction or due to an autonomous control algorithm prediction, any human presence that results in an increase of the total human count, will trigger an alarm event generated by processing system 102. As a result, an alert could be sent to the user registered devices, a third-party monitoring agency and/or an accessory siren could be turned on given that the system was not disarmed before a predetermined grace period has expired. The user can disarm the system by accessing any of the lighting controllers, accessing the app in any of the registered devices after being authenticated, tag any of the lighting controllers with a special near-field communication (NFC) tag accessory that the user acquired as part of the system or tag a registered device with built-in NFC capability. The system can also be configured to automatically accept an increase in an occupant count without issuing an alarm if the increase is accompanied with a detection of a new registered device being in a range of the system's local wireless signal such as Bluetooth or WiFi.
One major advantage of the security feature described above is an ability to offer burglary intrusion detection while the environment is occupied, without an annoyance of false alarms. False alarms are a common complaint associated with contemporary motion sensors employed by traditional alarm systems. For example, ultrasonic or infra red motion sensors. Occupants or guests going into zones protected by these sensors and forgetting to disarm the system are a common source for false alarms, since these sensors will trip once a motion is detected regardless of the source. Alternatively, environment control system 100 can offer a motion detection strategy while the environment is occupied, without the annoyance of false alarms. This is accomplished by using radar 602 embedded in each environment controller 102. Radar 602 has greater resolution than standard motion detectors. An occupant detection capability associated with radar 602 coupled with post-processing by processing system 104 to enables motion detection while the environment is occupied. When user 116 arms the system, it logs a number of occupants, and now those occupants can roam the space freely since their total is always going to add up to the same value. However, the moment the system detects a motion coupled with a higher occupant count, the system must be disarmed within a predefined short period before it generates an alarm event. This is achieved by 1312 and 1314 in method 1300. Such a system offers an advanced security system that enables protection measures without adding complexity or inconvenience to a customer.
Another advantage of using environment control system 100 is that since the sensing element is distributed in devices (i.e., environment controllers) installed within the environment, an intruder does not have access to the indoor environment controllers without triggering an associated sensing element (e.g., radar 602) first. This may not be true for traditional security systems since the intruder might still have access to the perimeter window/door sensors before they are sensed. This flaw could enable the intruder to disable the device before being sensed if the sensor or its control signal wiring was not placed, installed or protected properly.
In addition to implementing functionalities that provide security and autonomous control, occupant count information can also offer the space owner's indication about how the space is being used. A feature of the system called “people-fencing” could be utilized for this purpose. For example, before a night out, parents could set the system up to send an alert to registered devices when an occupant count limit is violated (setup a max and/or min people fences). In turn, those alerts could indicate an unwanted gathering (house party) or a child leaving a residence at night. These functionalities are provided by steps 1312 and 1314 respectively in method 1300. In the commercial world this feature could be useful in spaces where it is supposed to be maned at all times (ex: security guard, reception desk, etc.) since an alert will be sent, if the occupancy count dipped below the limit. This functionality is provided by steps 1316 and 1318 in method 1300.
In some embodiments, environment control system 102 can be used to implement an autonomous room fencing system, where virtual fence is set up around individual room inside an environment. In this case, environment control system can generate a smart alert if the room gets occupied. This feature is useful to notify user 116 about undesired behaviors (ex: an airbnb guest or a dog walker entering a master bedroom).
In some embodiments, communication circuit board 1506 supports different standard communication protocols such as Bluetooth BR/EDR, Bluetooth LE, WiFi NFC, and cellular. Communication circuit board 1506 enables a system of multiple environment controllers to communicate between each other as well as with nearby electronic devices, nearby modules and the Internet. Enabling NFC short-range communication allows an automatic pairing or detection of other environment controllers, as well as supported accessories or loads such as mobile devices, smart watches, wireless bulbs, wireless shades, smart appliances, key fobs, etc.
In some embodiments, logic motherboard 1508 acts a hub, electrically coupling all other circuit boards together and providing a way for power and communication signals to be routed across interface element 1500. In particular embodiments, logic motherboard 1508 also contains processing system 104 where autonomous control machine learning algorithms, or partial versions of thereof, are maintained and executed. Logic motherboard 1508 receives input data from sensor circuit board 1504 and communication circuit board 1506, and based on the autonomous control algorithm prediction, logic motherboard 1508 may transmit commands to control the attached power module such as power module 1408 and other remote components through supported communication protocols.
In some embodiments, environment controller EC1 1708 has a field of view bounded by a boundary line 1705 and a boundary line 1706. Environment controller EC1 1708 is configured to temporally log a location history of the occupant while the occupant is in the field of view bounded by boundary line 1705 and boundary line 1706, throughout a period of time for which any load in environment 1700 is activated. Environment controller EC1 1708 runs a clustering algorithm (a form of unsupervised machine learning) to process data in the log. In some embodiments, this processing is performed by processing system 104, using step 908 as depicted in
In some embodiments, input layer 1802 is comprised of a plurality of input nodes, including an input node 1804, an input node 1806, through an input node 1808. Inputs to input nodes include system-wide information including LSOR occupants counts, a time of the day, a day of the week, a calendar date, as well as local weather metrics (e.g., temperature, humidity and cloudiness). To accomplish this, some embodiments of processing system 104 include a time clock and a calendar.
Other inputs to input nodes include variables for each environment controller in an environment. These input variables include, for each environment controller, ambient light level and color point, barometric pressure level, ambient temperature, humidity, surrounding air quality level (IAQ) and current settings of its associated load. The system combines inputs from all environmental controllers in a local distributed database and/or in a centralized cloud database. In most installations there is one environment controller for every controlled load; therefore the number of environment controllers and number of loads are of the same value, “n”.
In some embodiments, each node in input layer 1802 is coupled to one or more nodes in hidden layer 1804. As shown in
In some embodiments, hidden layer 1804 includes additional layers of nodes, such as a second layer of nodes that is comprised of a node 1832, a node 1834, a node 1836, a node 1838, a node 1840, a node 1842, a node 1844, through a node 1846, a node 1848, and a node 1850. Each node of the first layer in hidden layer is coupled to each node in the second layer via a coupling 1880. (For ease of presentation, coupling 1880 is used to signify that each of node 1812 through node 1830 is coupled to each of node 1832 through node 1850.) In this way, each node in each layer in hidden layer 1804 is coupled to each node of a subsequent layer.
In some embodiments, hidden layer 1804 includes a final layer that is comprised of a node 1852, a node 1854, a node 1856, a node 1858, a node 1860, a node 1862, a node 1864, through a node 1866, a node 1868, and a node 1870. Each of node 1852 through node 1870 is coupled to each node in an output layer 1872, where output layer 1872 is comprised of a node 1874, a node 1876, through a node 1878. Each of node 1874 through node 1878 outputs a setting for each load in the environment, in accordance with learned and processed occupant preferences. For example, node 1847 may output an ambient light level for a corresponding lighting load, node 1876 may control an HVAC setting, and node 1878 may control a window shade. In this way, neural network 1800 performs all necessary processing functions that enable environment control system 100 to determine a user interaction with the environment, determine a user intent associated with controlling multiple devices associated with the environment, continuously monitor the environment condition, control the devices responsive to determining the user interaction, the user intent and the environment condition.
In some embodiments an algorithm associated with neural network 1800 processes the input feature data through a number of deep hidden layers with various weights that are continually updated throughout the learning process. As a result, these weights are measures of the occupants' habits, allowing the algorithm to output the desired space settings. In another embodiment, the architecture of neural network 1800 could be a recursive neural network (RNN), a convolution neural network (CNN), or a combination of various types of neural networks. The algorithm could also employ reinforcement learning to improve its predictions. Output layer 1872 consists of all connected loads and their settings information which can be described as one value or multiple values depending on the type of the load (e.g., one value for a hardwired incandescent bulb versus multiple values for a wirelessly paired smart color bulb)
In some embodiments, an initialization process associated with all environment controllers in indoor region 1900 (i.e., environment controller EC1 1908 through environment controller EC10 1920) includes each environmental controller attempting to define LSORs in associated load zones by monitoring occupants' movements and applying the clustering algorithm as mentioned before.
In some embodiments, the system continues to monitor the conditions and user behavior associated with indoor region 1900 to make any needed adjustments. For example, suppose the living room is brighter than usual when the occupants arrive back home in the summertime. Due to this, the customer might adjust a window shade associated with load zone L6 1946 to close completely by accessing environment controller EC6 1944. The system logs this adjustment (50% reduced to 0%) and after few records, it allows it to recognize the relationship between the ambient light level measured in the living room and the position of this window shade. As a result, the space will continue to be autonomously controlled in such a way that the total ambient light level matches the desired user settings, regardless of the season or weather.
Other embodiments of environment control system 100 include an ability to interface with a computing device such as a mobile phone, a tablet, a wearable device, a laptop computer, a desktop computer, or a remote server using a communication method such as WiFi, Bluetooth, cellular and so on. In some embodiments, the computing device may be used by a user to remotely control environment control system 100 via a software application running on the computing device. In other embodiments, environment control system 100 may be configured to modify an operating characteristic of the computing device, such as playing music on the computing device in accordance with a user preference or using Bluetooth beaconing to communicate to the computing device its whereabouts in the environment. This level of awareness can be very valuable to offer new experiences to the user such as to find the whereabouts of a lost smart device or have the smart device adjust its behavior based on its location like silencing the ringer in the bedroom and making it loud in the kitchen.
Another application of environment control system 100 is room-fencing. Environment control system can be used to set up a virtual fence around an individual room inside, for example, a residence. A user then receives an alert from environment control system 100 if the room gets occupied. For example, if a room is determined to be out of bounds for a guest or a dog walker, this feature may be used to implement a virtual fence around the room.
Although the present disclosure is described in terms of certain example embodiments, other embodiments will be apparent to those of ordinary skill in the art, given the benefit of this disclosure, including embodiments that do not provide all of the benefits and features set forth herein, which are also within the scope of this disclosure. It is to be understood that other embodiments may be utilized, without departing from the scope of the present disclosure.
This application claims the priority benefit of U.S. Provisional Application Ser. No. 62/700,674, entitled “Autonomous Space Control,” filed on Jul. 19, 2018, the disclosure of which is hereby incorporated by reference herein in its entirety.
Number | Date | Country | |
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62700674 | Jul 2018 | US |