Patent Application
20190238376
This non-provisional application claims priority under 35 U.S.C. § 119(a) to Patent Application No. 107103699 filed in Taiwan, R.O.C. on Feb. 1, 2018, the entire contents of which are hereby incorporated by reference.
This disclosure generally relates to a physiological information collecting system and a transceiver device thereof.
Detection devices can be worn on the human body or implanted in the human body to detect various physiological signals of the human body or to release drugs. Such detection devices include, for example, hydrogen sulfide detectors, occult blood detectors, heart rate monitors, blood pressure meters, etc. Additionally, detection devices can be connected to external devices (such as smart bracelets and medical devices) to transmit data signals (such as physiological signals, control signals, etc.) bidirectionally between the detection devices and an external devices. For example, when a detection device transmits a data signal by wireless communication, typically the data signal is first modulated into a radio frequency (RF) signal (or a modulated signal) and then the RF signal is transmitted. The external devices receive and demodulate the RF signal to obtain a data signal from the RF signal. For wireless communication, the available radio bandwidth has gradually been reduced, and most current RF signals are continuous signals with a narrower bandwidth, which is relatively limited.
In view of this problem, one embodiment of this disclosure provides a physiological information collecting system including a detection device and a transceiver device. The detection device includes a detection module configured to detect a data signal and a communication module configured to modulate the data signal into a discontinuous signal and transmit the discontinuous signal. The transceiver device includes a front-end circuit configured to receive and amplify the discontinuous signal and separate the discontinuous signal amplified into an in-phase baseband signal and a quadrature baseband signal that are orthogonal to each other. The follower circuit is configured to output a control voltage and configured to rotate the in-phase baseband signal by a phase angle to output a follower signal. The follower signal follows the in-phase baseband signal, and the control voltage corresponds to a phase angle difference between the follower signal and the in-phase baseband signal. The quadrature delay line is configured to rotate the quadrature baseband signal by a corresponding phase angle according to the control voltage. The corresponding phase angle is the phase angle difference plus 90 degrees. The output circuit is configured to synthesize the follower signal and the quadrature baseband signal rotated and output the data signal. Consequently, the detection device and the transceiver device are adapted to transmit the discontinuous signal to reduce the power consumption and simplify the circuit configurations of the detection device and the transceiver device. Additionally, the detection device and the transceiver device reduce the bandwidth range of the discontinuous signal when transmitting the discontinuous signal, reduce the power consumed by the detection device and the transceiver device, and demodulate the discontinuous signal with various transmission rates of different data.
Another embodiment of this disclosure provides a transceiver device capable of receiving or transmitting a discontinuous signal through a human body passage. The transceiver device includes a front-end circuit, a follower circuit, a quadrature delay line and an output circuit. The front-end circuit is configured to receive and amplify a discontinuous signal and separate the discontinuous signal amplified into an in-phase baseband signal and a quadrature baseband signal that are orthogonal to each other. The follower circuit is configured to output a control voltage and configured to rotate the in-phase baseband signal by a phase angle to output a follower signal. The follower signal follows the in-phase baseband signal, and the control voltage corresponds to a phase angle difference between the follower signal and the in-phase baseband signal. The quadrature delay line is configured to rotate the quadrature baseband signal by a corresponding phase angle according to the control voltage. The corresponding phase angle is the phase angle difference plus 90 degrees. The output circuit is configured to synthesize the follower signal and the quadrature baseband signal rotated and output a data signal. Consequently, the detection device and the transceiver device are adapted to transmit the discontinuous signal to reduce the power consumption and simplify the circuit configurations of the detection device and the transceiver device. Additionally, the detection device and the transceiver device reduce the bandwidth range of the discontinuous signal when transmitting the discontinuous signal, reduce the power consumed by the detection device and the transceiver device, and demodulate the discontinuous signal with various transmission rates of different data.
Another embodiment of this disclosure provides a physiological information collecting system including a portable electronic device and a wearable electronic device. The portable electronic device includes a touch element configured to generate a touch signal and a communication interface configured to transmit a discontinuous signal according to the touch signal. The wearable electronic device includes: a front-end circuit configured to receive and amplify the discontinuous signal transmitted by the communication interface and separate the discontinuous signal amplified into an in-phase baseband signal and a quadrature baseband signal that are orthogonal to each other; a follower circuit configured to output a control voltage and configured to rotate the in-phase baseband signal by a phase angle to output a follower signal, the follower signal following the in-phase baseband signal, and the control voltage corresponding to a phase angle difference between the follower signal and the in-phase baseband signal; a quadrature delay line configured to rotate the quadrature baseband signal by a corresponding phase angle according to the control voltage, the corresponding phase angle being the phase angle difference plus 90 degrees; and an output circuit configured to synthesize the follower signal and the quadrature baseband signal rotated and output the data signal. Consequently, the detection device and the transceiver device are adapted to transmit the discontinuous signal to reduce the power consumption and simplify the circuit configurations of the detection device and the transceiver device. Additionally, the detection device and the transceiver device reduce the bandwidth range of the discontinuous signal when transmitting the discontinuous signal, reduce the power consumed by the detection device and the transceiver device, and demodulate the discontinuous signal with various transmission rates of different data.
This disclosure will become more fully understood from the detailed description given herein below for illustration only, and thus not limitative of this disclosure, wherein:
With reference to
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The modulated signal indicates a modulated signal generated by modulating a binary signal (containing, for example, physiological information). Such modulated signal may be, for example, the frequency shift keying (FSK) the phase shift keying (PSK) or the amplitude shift keying (ASK) modulated signal. Additionally, the modulated signal may be continuous or discontinuous. The bandwidth of the modulated signal is within a range from 3 KHz to 800 MHz, where low bandwidth is ranging from 3 KHz to 300 KHz, middle bandwidth is ranging from 300 KHz to 3 MHz and high bandwidth is ranging from 3 MHz to 300 MHz. Taking a discontinuous FSK signal as an example, the bandwidth of a discontinuous FSK signal is within a range from 1 MHz to 40 MHz. The term “bandwidth” described in this specification only serves to illustrate these embodiments of this disclosure. The bandwidth of a substantially modulated signal depends on the type of data signal, such as an audio signal, a video signal or a medical image, and is not intended to limit the scope of this disclosure.
With reference to
In one embodiment, the communication interface 20 of the transceiver device 200 can obtain the identification (ID) number of the detection device 100 via a protocol such as TCP, HTTP, SSL, or the like. Conversely, the communication module 12 of the detection device 100 may also obtain the ID number of the transceiver device 200 via a protocol. In other words, the transceiver device 200 and the detection device 100 establish a connection to each other through a handshake process. The term “connection” described in this specification only serves to explain the connection or interaction between various elements in the drawings via the Internet or the human body passage between the transceiver device 200 and the detection device 100, and is not intended to limit the scope of this disclosure.
With reference to
Taking a smart bracelet as an example, the smart bracelet includes a user interface (such as a touch panel) a communication interface 20, a second touch element 32, and a control component 25 connecting the second touch element 32, the communication interface 20 and the user interface. When the first touch element 31 of the detection device 100 and the second touch element 32 of the smart bracelet are touched by the human skin, a human body passage is formed between the smart bracelet and the detection device 100. When a user touches a touch panel (such as a capacitive touch panel) the position where the touch panel is touched by the user corresponds to one or more capacitors with a current variation. Based on the capacitors, the control component 25 executes an application corresponding to the position where the touch panel is touched. The application drives the communication interface 20 to transmit a wake-up signal to the communication module 12 of the detection device 100 via the human body passage. The communication module 12 transmits the data signal detected by the detection module 11 to the communication interface 20 according to wake-up signal. Next, after the communication interface 20 receives the data signal, the control component 25 drives the communication interface 20 to transmit a sleep signal to the communication module 12 of the detection device 100 to stop the communication module 12 from transmitting the data signal.
Taking a smart phone as an example, the smart phone includes a user interface (such as a wave-based touch screen) a communication interface 20, a second touch element 32 and a control component 25 connecting the user interface, the communication interface 20 and the second touch element 32. When the first touch element 31 of the detection device 100 and the second touch element 32 of the smart phone are touched by the human skin, a human body passage is formed between the smart phone and the detection device 100. The wave-based touch screen uses ultrasonic transmitters and receivers installed around the touch panel to transmit and receive ultrasonic waves to and from each other. When the user's finger touches the touch panel, the transmitted ultrasonic wave is blocked by the finger, causing the transmitted ultrasonic wave to attenuate. The control component 25 compares the ultrasonic attenuation variation before and after the ultrasonic wave is blocked to calculate the position where the touch panel is touched, and the position corresponds to the communication interface 20. When the control component 25 determines that the touched position corresponds to the communication interface 20, the control component 25 drives the communication interface 20 to transmit a wake-up signal to the communication module 12 of the detection device 20. The communication module 12 transmits the data signal detected by the detection module 11 to the communication interface 20 according to the wake-up signal. Then, after the communication interface 20 receives the data signal, the control component 25 drives the communication interface 20 to transmit a sleep signal to the communication module 12 of the detection device 100 to stop the communication module 12 from transmitting the data signal.
In one embodiment, when the user touches the second touch element 32 of the smart phone and the touch panel, the smart phone and the touch panel may be connected to each other via the human body passage. When the control component 25 or the communication interface 20 of the smart phone receives a trigger signal, the control component 25 transmits a wake-up signal to the touch panel via the human body passage according to the trigger signal. The plurality of array capacitors in the touch panel may couple the transmitted wake-up signal via the human body passage. That is, the touch panel may receive the transmitted wake-up signal via the human body passage. Similarly, the touch panel can also receive the data signal transmitted from the smart phone via the human body passage.
With reference to
With reference to
In one embodiment, the communication module 12 of the detection device 100 may also be the communication interface 20 of the transceiver device 200. In one embodiment, the communication interface 20 of the transceiver device 200 may also be the communication module 12 of the detection device 100.
With reference to
The oscillator circuit, such as a ring oscillator, can adjust the level of the analog adjustment voltage. In other words, the first oscillator circuit 213 is configured to adjust the first analog adjustment voltage, and the second oscillator circuit 214 adjusts the second analog adjustment voltage. The decision circuit 215, such as a multiplexer, is configured to receive a data signal and an analog adjustment voltage (such as a first analog adjustment voltage or a second analog adjustment voltage). The decision circuit 215 then decides whether to transmit the designated data signal, such as data being 0 or data being 1, according to the analog adjustment voltage. The transmitting amplifier 216, such as a power amplifier, amplifies the data signal to be transmitted.
With reference to
The first mixing component 233 can synthesize the discontinuous signal from the local amplification component 231 and in-phase oscillation signal from the local oscillator circuit 232 to output an in-phase signal (such as an in-phase baseband signal). The second mixing component 234 can synthesize the discontinuous signal from the local amplification component 231 and the quadrature oscillation signal from the local oscillator circuit 232 to output an quadrature signal (such as a quadrature baseband signal). The quadrature signal may lead or lag the in-phase signal by, for example, 90°. For example, when the front-end circuit 230 receives two discontinuous signals, namely, a first discontinuous signal with a frequency of 105 MHz and a second discontinuous signal with a frequency of 95 MHz, the first discontinuous signal and the second discontinuous signals may be modulated into an in-phase signal being +5 MHz (5<0°) and a quadrature signal being −5 MHz (5<270° or 5<90° that are orthogonal to each other and have zero intermediate frequency.
The front-end circuit 230 further includes a first amplification circuit 235 and a second amplification circuit 236. The first amplification circuit 235 amplifies the in-phase signal and filters out the high-frequency polarization voltage and the DC offset in the in-phase signal, and then the first amplification circuit 235 outputs an in-phase baseband signal. The second amplification circuit 236 amplifies the quadrature signal, filters out the high-frequency polarization voltage and the DC offset in the quadrature signal, and then the second amplification circuit 236 outputs a quadrature baseband signal.
The follower circuit 240 includes an in-phase delay line 241 and a feedback circuit 242, such as a delay locked loop (DLL). The in-phase delay line 241 may output a follower signal after the in-phase baseband signal is rotated by a phase angle. The feedback circuit 242 generates a control voltage after receiving the in-phase baseband signal and the follower signal, and feeds back the control voltage to the in-phase delay line 241 such that the in-phase delay line 241 enables the follower signal to follow the in-phase baseband signal according to the control voltage. The term “follow” described in this specification means that the in-phase delay line 241 controls the phase angle of the follower signal gradually approximates the phase angle of the in-phase baseband signal according to the control voltage, whereby the phase difference between the follower signal and the in-phase baseband signal remains less than a predetermined cycle, such as ±2n or ±3n. For example, the bandwidth of the delay locked loop is 1 MHz. The delay locked loop can lock the phase angle of the follower signal when the follower signal is in phase with the in-phase baseband signal in a cycle of 1 μs. When the in-phase baseband signal received by the in-phase delay line 241 and the feedback circuit 242 is discontinuous, for example, the data signal is switched between 1 and 0, the delay locked loop unlocks the phase angle of the follower signal and then detects a predetermined cycle range of the in-phase baseband signal, such as two cycles of the in-phase baseband signal, for example, 5 MHz. For example, if the phase difference between the follower signal and the in-phase baseband signal is 180°, the control voltage generated by the feedback circuit 242 is 0.2 volts. Then, the in-phase delay line 241 detects two cycles of the in-phase baseband signal, for example, 5 MHz, according to 0.2 volts and corrects the phase angle of the in-phase baseband signal to 108° such that the phase difference between the follower signal and the in-phase baseband signal is 72°.
The in-phase delay line 241 may be, but not limited to, one or more D-type flip-flops. Each D-type flip-flop includes one or more input terminals and an output terminal. For example, a D-type flip-flop has two input terminals and two output terminals. When a plurality of D-type flip-flops is connected in series, two input terminals of a current D-type flip-flop are connected in series with the two output terminals of a previous stage.
The feedback circuit 242 includes a comparator component 243, a charge pump 244 and a converter circuit 129. The comparator component 243, for example, a phase frequency detector, is configured to compare the phase angle of the in-phase baseband signal with the phase angle of the follower signal to correspondingly generate a comparison signal. The charge pump 244, such as a multi-stage voltage doubler circuit, is configured to amplify the comparison signal and output a control current. The converter component 245, such as a first-order low-pass filter or a capacitor, is configured to convert the control current into a control voltage, and feedback the control voltage to the in-phase delay line 241 (such as an input terminal of a D-type flip-flop).
The quadrature delay line 250 may be, but is not limited to, one or more D-type flip-flops. Considering the matching between the D-type flip-flops and the follower circuit 240, i.e., the matching between the in-phase delay line 241 and the quadrature delay line 250, the circuit configurations of the quadrature delay line 250 and the in-phase delay line 241 are substantially the same. The difference between the quadrature delay line 250 and the in-phase delay line 241 is that the output terminal of the quadrature delay line 250 and the output terminal of the in-phase delay line 241 may be connected together to the same output circuit 260, to which, however, the scope of this disclosure is not limited. In one embodiment, there is a plurality of output circuits 260. For example, there are two output circuits 260. An output terminal of the quadrature delay line 250 is connected to an output circuit 260 and an output terminal of the in-phase delay line 241 is connected to another output circuit 260.
The output circuit 260 is a frequency-mixing component 261, such as a frequency-mixer. The frequency-mixing component 261 can synthesize the follower signal and the rotated quadrature baseband signal to output a synthesized signal. When the data signal is 1 and the phase difference between the follower signal and a rotary signal is 0°, the synthesized signal outputted by the frequency-mixing component 261 is 1. That is, the demodulated data signal is 1. On the contrary, when the data signal is 0 and the phase difference between the follower signal and the rotary signal is 180°, the synthesized signal outputted by the frequency-mixing component 261 is 0. That is, the demodulated data signal is 0.
In one embodiment, the synthesized signal includes a high frequency signal and a data signal, and the output circuit 260 includes a frequency-mixing component 261 and a filter component 262 connected to the frequency-mixing component 261. The filter component 262 may be, but is not limited to, a first-order or high-order low-pass filter, such as a Butterworth filter (Sallen-Key filter) that can receive and filter out harmonic signals at twice the baseband frequency of the synthesized signal, for example 10 Hz, to suppress the harmonic signal 35 dB. The filter component 262 can receive the synthesized signal from the frequency-mixing component 261. Then, the filter component 262 can filter out the high-frequency signal in the synthesized signal and output the data signal. In other words, the filter component 262 can output the data signal in the synthesized signal.
With reference to
The wearable electronic device 50 includes a transmitter circuit 21, a receiver circuit 23 and a control component 25. The transmitter circuit 21 can transmit a discontinuous signal containing a wake-up signal to drive the communication interface 20 of the portable electronic device 40 to transmit a discontinuous signal containing a data signal to the receiver circuit 23 of the wearable electronic device 50. The receiver circuit 23 receives the discontinuous signal containing the data signal and demodulates the data signal in the discontinuous signal containing the data signal. Then, the control component 25 drives the transmitter circuit 21 to transmit a discontinuous signal containing a sleep signal to drive the communication interface 20 of the portable electronic device 40 to stop transmitting the discontinuous signal containing the data signal.
In one embodiment, the portable electronic device 40 includes a storage unit configured to receive and store a data signal. The wearable electronic device 50 includes a storage element configured to receive and store the data signal. The storage unit and the storage element have been disclosed in the storage components described above, and descriptions thereof are not to be repeated herein.
In one embodiment, the communication interface 20 of the portable electronic device 40 can obtain the ID number of the wearable electronic device 50 via a protocol, such as TCP, HTTP, SSL, or the like. On the contrary, the communication interface 20 of the wearable electronic device 50 may also obtain the ID number of the portable electronic device 40 via a protocol. That is, the portable electronic device 40 and the wearable electronic device 50 establish a connection to each other via the handshake process.
In one embodiment, the physiological information collecting system 1 further includes a detection device 100. The detection device 100 includes a detection module 11 and a communication module 12. The communication interface (such as a transmitter circuit 21) of the portable electronic device 40 or the wearable electronic device 50 may transmit a discontinuous signal containing a wake-up signal to the communication module 12 of the detection device 100. The detection module 11 demodulates the wake-up signal in the discontinuous signal and transmits a discontinuous signal containing the data signal to the portable electronic device 40 or the receiver circuit 23 of the wearable electronic device 50 according to the wake-up signal. Then, the receiver circuit 23 demodulates the data signal in the discontinuous signal.
In one embodiment, when the transmitter circuit 21 of the wearable electronic device 50 transmits a discontinuous signal containing a wake-up signal, the communication module 12 of the detection device 100 or the communication interface (such as a transmitter circuit 21) of the portable electronic device 40 can receive the discontinuous signal containing the wake-up signal and demodulate the wake-up signal in the discontinuous signal, and transmit a discontinuous signal containing a data signal to the receiver circuit 23 of the wearable electronic device 50 according to the wake-up signal. Next, the receiver circuit 23 of the wearable electronic device 50 can receive the discontinuous signal containing the data signal transmitted from the communication interface 20 of the portable electronic device 40 or the discontinuous signal containing the data signal transmitted from the communication module 12 of the detection device 100.
In one embodiment, when a communication interface (such as the sending circuit 21) of the portable electronic device 40 transmits a discontinuous signal containing a wake-up signal, the communication module 12 of the detection device 100 or the receiver circuit 23 of the wearable electronic device 50 can demodulate the wake-up signal in the discontinuous signal containing the wake-up signal. Next, the communication module 12 of the detection device 100 or the transmitter circuit 21 of the wearable electronic device 50 transmits a discontinuous signal containing a data signal to the communication interface 20 (such as a receiver circuit 23) of the portable electronic device 40 according to the wake-up signal. Then, the communication interface 20 (such as a receiver circuit 23) of the portable electronic device 40 can demodulate the discontinuous signal containing the data signal transmitted by the transmitter circuit 21 of the wearable electronic device 50 or the communication module 12 of the detection device 100.
In one embodiment, the communication module 12 of the detection device 100 may obtain the ID number of the wearable electronic device 50 or the ID number of the portable electronic device 40 via a protocol such as TCP, HTTP, SSL, etc. ID number. Similarly, the communication interface 20 of the portable electronic device 40 or the communication interface 20 of the wearable electronic device 50 can also obtain the ID number of the portable electronic device 40 via an internet protocol. In other words, the detection device 100, the portable electronic device 40 and the wearable electronic device 50 establish a connection between any two or three parties through a handshake process.
Through one or more embodiments of this disclosure, the detection device 100 and the transceiver device 200 may receive or transmit a modulated signal (such as a continuous signal or a discontinuous signal) via the human body passage because the human body passage provides a wider bandwidth compared to RF bandwidth. However, when the detection device 100 and the transceiver device 200 transmit a continuous signal, the detection device 100 and the transceiver device 200 consume a large amount of power. Therefore, the detection device 100 and the transceiver device 200 are adapted to transmit the discontinuous signal to reduce the power consumption and simplify the circuit configurations of the detection device 100 and the transceiver device 200. Additionally, the detection device 100 and the transceiver device 200 reduce the bandwidth range of the discontinuous signal when transmitting the discontinuous signal, reduce the power consumed by the detection device 100 and the transceiver device 200, and demodulate the discontinuous signal with various transmission rates of different data.
While this disclosure has been described by the way of example and in terms of the preferred embodiments, it is to be understood that the invention need not be limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.
| Number | Date | Country | Kind |
|---|---|---|---|
| 107103699 | Feb 2018 | TW | national |
