WO2014061239A1 - Dispositif de détection de communication - Google Patents

Dispositif de détection de communication Download PDF

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Publication number
WO2014061239A1
WO2014061239A1 PCT/JP2013/006052 JP2013006052W WO2014061239A1 WO 2014061239 A1 WO2014061239 A1 WO 2014061239A1 JP 2013006052 W JP2013006052 W JP 2013006052W WO 2014061239 A1 WO2014061239 A1 WO 2014061239A1
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WO
WIPO (PCT)
Prior art keywords
transmission
circuit
signal
communication
detection
Prior art date
Application number
PCT/JP2013/006052
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English (en)
Japanese (ja)
Inventor
竇　元珠
Original Assignee
アルプス電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプス電気株式会社 filed Critical アルプス電気株式会社
Priority to CN201380052908.0A priority Critical patent/CN104737031A/zh
Priority to JP2014541934A priority patent/JPWO2014061239A1/ja
Publication of WO2014061239A1 publication Critical patent/WO2014061239A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection

Definitions

  • the present invention relates to a communication sensor device, and more particularly, to a communication sensor device that can reduce power consumption.
  • sensors that measure the distance to a detection target using radio waves sensors that detect the presence or proximity of the detection target by detecting the movement of the detection target, and the like have been proposed.
  • a transmission circuit that transmits a high-frequency signal digitally modulated by a modulation circuit 901, a transmission antenna 902 that radiates a high-frequency signal, and a communication partner.
  • a receiving antenna 902 that receives a signal and a reflected wave from an object, a receiving circuit that demodulates a received signal output from the receiving antenna 902 by a demodulating circuit 903 and takes in a signal from a communication partner as received data; and a transmitting circuit Phase detection for phase detection of a combined signal obtained by interfering a part of the high-frequency signal fed to the receiving antenna 902 and a reflected wave reception signal that is a reflected wave from the object received by the receiving antenna 902 during high-frequency signal transmission
  • a signal processing circuit for detecting a change in position of the object by signal processing the detection signal output from the circuit 904 and the phase detection circuit 904 It is provided with a 905, a.
  • data communication and sensing are realized at the same frequency at the same time by using a transmission signal used for communication as a radio wave for sensing.
  • a sensing operation for detecting the movement of the object can be performed while maintaining the state.
  • information such as data related to the movement of a detection target such as a person detected by the sensing function is about 1 Hz if the data related to the movement of the detection target such as a person is, for example, a body movement associated with a human heartbeat or respiration. Even body movements associated with walking and exercise are few tens of Hz or less.
  • the communication sensor device of the prior art uses the transmission signal used for communication as it is as a radio wave for sensing, so the amount of detected data obtained by the sensing function
  • the amount of data that can be transmitted and received by the communication function is extremely small, and it is necessary to send empty transmission data that does not include the detection data obtained by the sensing function in the transmission data, which wastes power consumption as a communication sensor device. There was a problem that it would increase.
  • the sensitivity of the sensing function is lowered because the average transmission power is lowered if the frequency of the transmission operation is lowered in accordance with the detected data amount obtained by the sensing function.
  • the present invention solves the above-described problems, and an object of the present invention is to provide a communication sensor device that can reduce the sensitivity of the sensor and reduce power consumption.
  • the communication sensor device radiates a transmission signal and receives a communication signal from a communication partner and a reflected wave reception signal that is a reflected wave from a detection target;
  • a transmission / reception unit including a transmission circuit having a modulation circuit and a reception circuit having a demodulation circuit to perform communication connected to the antenna; a control circuit connected to the transmission / reception unit and controlling the transmission / reception unit;
  • a detection circuit for detecting a composite signal of a part of the transmission signal and the reflected wave reception signal received by the antenna during transmission of the transmission signal from the transmission circuit via the antenna; and
  • a low-pass filter that is connected and has a cutoff frequency set lower than a modulation frequency for modulation by the modulation circuit, and a signal processing circuit that processes a signal output from the low-pass filter.
  • the control circuit controls the transmission / reception unit, and alternately repeats a transmission operation and a non-transmission operation at a constant period, and transmits the transmission.
  • the operation is characterized by alternately repeating a detection transmission operation for obtaining the reflected wave reception signal one or more times and a communication transmission operation n times (n is a natural number) for transmitting data.
  • the communication sensor device is characterized in that the transmission operation alternately repeats one or more detection transmission operations and one communication transmission operation.
  • the communication sensor device is characterized in that the detection transmission operation is shorter than the communication transmission operation.
  • the control circuit controls the transmission / reception unit, and alternately repeats the transmission operation and the non-transmission operation at a constant cycle, and the transmission operation is for obtaining one or more reflected wave reception signals. Since the detection transmission operation and the n transmission transmission operation for transmitting data (n is a natural number) are controlled to be repeated alternately, the frequency of the communication transmission operation can be reduced. For this reason, since the frequency which operates a modulation circuit or a demodulation circuit can be made low, the power consumption of a communication sensor apparatus can be reduced.
  • the transmission operation since the transmission operation alternately repeats one or more detection transmission operations and one communication transmission operation, the power consumption of the communication sensor device can be further reduced. .
  • the detection transmission operation since the detection transmission operation has a shorter time than the communication transmission operation, the power consumption of the communication sensor device can be further reduced.
  • the communication sensor device 100 communicates with the communication partner 200 by radiating a transmission signal and receiving a communication signal from the communication partner 200, and detects a reflected wave from the detection target and detects the detection target. Detection is performed.
  • FIG. 2 is a block diagram showing the configuration of the communication sensor device 100.
  • the communication sensor device 100 includes a transmission / reception unit 10, a detection unit 20, and a control circuit 7.
  • the communication sensor device 100 has a power supply circuit 8 to supply operation power to each part of the communication sensor device 100.
  • the antenna 1 radiates a transmission signal output from the transmission / reception unit 10 and receives a communication signal radiated from the communication partner 200 and a reflected wave in which the transmission signal is reflected by the detection target.
  • the transmission / reception unit 10 is connected to the antenna 1 and includes a transmission circuit 2 having a modulation circuit 2a that converts information to be transmitted to the communication partner 200 into a transmission signal, and a demodulation circuit that extracts reception information from the communication signal transmitted from the communication partner 200.
  • a receiving circuit 3 having 3a is provided.
  • the transmission / reception unit 10 amplifies the received signal as a part of the power amplifier (hereinafter referred to as PA) for outputting the transmission signal as a part of the transmission circuit 2 as a part of the transmission circuit 2 and the reception circuit 3
  • PA power amplifier
  • the detection unit 20 is connected to the antenna 1 and includes a detection circuit 4, a low-pass filter 5 (hereinafter referred to as LPF), and a signal processing circuit 6.
  • LPF low-pass filter 5
  • the detection circuit 4 is a reflected wave reception signal in which a part of the transmission signal and a reflected wave obtained by reflecting the transmission signal on the detection target are received by the antenna 1.
  • the combined signal is detected and output.
  • the LPF 5 is connected to the detection circuit 4, outputs a signal component related to the motion of the detection target included in the output signal of the detection circuit 4, and removes a modulation component of the transmission signal included in the output signal of the detection circuit 4.
  • the cut-off frequency is set lower than the modulation frequency at which modulation is performed by the modulation circuit 2a.
  • the signal processing circuit 6 performs signal processing such as amplification, sampling, and AD conversion on the signal output from the LPF 5 and outputs the result.
  • the control circuit 7 is connected to the transmission / reception unit 10, controls the operation state of the transmission circuit 2 and the reception circuit 3 of the transmission / reception unit 10, and outputs information to be transmitted to the communication partner 200 to the modulation circuit 2 a provided in the transmission circuit 2. Then, the reception information is received from the demodulation circuit 3 a provided in the reception circuit 3.
  • the control circuit 7 is further connected to the detection unit 20 and receives an output signal from the signal processing circuit 6 provided in the detection unit 20 to determine whether or not there is a detection target, an operation, and the like.
  • FIG. 3 is a diagram illustrating the operation timing of the communication sensor device 100.
  • 3A, 3B, and 3C show timings when the control circuit 7 controls the transmission circuit 2 and the reception circuit 3.
  • FIG. 3A, 3B, and 3C show timings when the control circuit 7 controls the transmission circuit 2 and the reception circuit 3.
  • the control circuit 7 controls the transmission circuit 2 including the modulation circuit 2a to be turned on at time T1 and performs a communication transmission operation for the communication partner 200 during time t1. Control is performed such that a transmission signal including information to be transmitted is transmitted from the transmission circuit 2 to the outside via the antenna 1, and the transmission circuit 2 including the modulation circuit 2a is controlled to be OFF after t1.
  • control circuit 7 controls the receiving circuit 3 to be ON after time t2 from the end of transmission in order to receive the communication signal transmitted from the communication partner 200 with respect to the transmission signal transmitted between time T1 and time t1.
  • the receiving circuit 3 is controlled to be OFF.
  • control circuit 7 controls the transmission circuit 2 excluding the modulation circuit 2a to be ON for a time t5 shorter than the time t1 of the communication transmission operation as the detection transmission operation after the time t4 has elapsed from the time T1. Control is performed so that a transmission signal that does not include information to be transmitted to the outside is transmitted from the transmission circuit 2 to the outside via the antenna 1, and the transmission circuit 2 is controlled to be OFF after t5.
  • the detection transmission operation is performed to obtain a reflected wave reception signal, and the detection transmission operation does not include information to be sent to the communication partner 200. Therefore, no communication signal is sent from the communication partner 200 after the transmission operation, and it is not necessary to operate the reception circuit 3 after the detection transmission operation is completed, and therefore the reception circuit 3 is not controlled.
  • FIG. 3 shows an example in which the second transmission operation is repeated four times.
  • control circuit 7 performs control so that the transmission operation and the non-transmission operation are alternately repeated at a constant cycle, and includes information to be transmitted to the communication partner 200 as a communication transmission operation at every time t6.
  • the reception circuit 3 is controlled to be ON after time t2 from the end of transmission, and during the time t3. Since control is performed so as to receive a communication signal sent from the communication partner 200, it is possible to perform a wireless communication operation with the communication partner 200.
  • control circuit 7 performs communication for one or more detection transmission operations (in the case of four times in FIG. 3) and n times (in the case of one time in FIG. 3) of transmitting data. Therefore, the frequency of the communication transmission operation can be reduced. For this reason, the frequency which operates the modulation circuit 2a and the demodulation circuit 3a can be made low, and the power consumption of a communication sensor apparatus can be reduced.
  • FIGS. 3D and 3E are diagrams showing the operation of the detection unit 20.
  • FIG. 3D shows an output obtained by detecting a combined signal of a part of the transmission signal in the detection circuit 4 and a reflected wave reception signal in which the reflected wave of the transmission signal reflected by the detection target is received by the antenna 1.
  • a signal obtained by detecting a combined signal of a part of the transmission signal and the reflected wave reception signal is output.
  • the output signal of the detection circuit 4 includes a modulation component of the transmission signal and a signal component related to the motion of the detection target.
  • FIG. 3E is a diagram illustrating the output of the LPF 5 when the output of the detection circuit 4 is input to the LPF 5.
  • the LPF 5 outputs a signal component related to the motion of the detection target included in the output signal of the detection circuit 4, and the cutoff frequency is a modulation circuit in order to remove the modulation component of the transmission signal included in the output signal of the detection circuit 4. Since it is set lower than the modulation frequency at which modulation is performed in 2a, a signal higher than the cutoff frequency such as a modulation component does not appear in the output.
  • the capacitor constituting the LPF 5 is charged by the signal component related to the motion of the detection target having a frequency lower than the cut-off frequency of the LPF 5 included in the output signal of the detection circuit 4, and after the time of transmission operation, the LPF 5 The output gradually decreases due to a discharge path constituted by the above circuit, or a leakage current that takes the insulation resistance of a part or the like constituting the LPF 5 as a path.
  • the control circuit 7 controls the transmission / reception unit 10 and alternately repeats the transmission operation and the non-transmission operation at a constant time t4, the frequency of the transmission operation is kept constant, and the decrease in average transmission power is suppressed. . Therefore, the capacitor constituting the LPF 5 is charged at a constant time t4 period, and a decrease in output due to the discharge of the LPF 5 can be prevented, so that a decrease in sensitivity of the sensing function can be suppressed.
  • FIG. 4 is a diagram illustrating an operation in which a motion of a detection target is detected.
  • FIG. 4A shows the movement of the detection target.
  • FIG. 4B is a diagram illustrating a transmission output transmitted from the communication sensor device 100.
  • FIG. 4C is a diagram illustrating a transmission signal of the communication sensor device 100 and an output signal obtained by detecting the combined signal of the reflected wave reception signal in which the transmission signal is reflected by the detection target by the detection circuit 4.
  • FIG. 4D is a diagram illustrating the LPF output when the detection output of FIG. 4C is input to the LPF 5.
  • the communication transmission signal and the transmission signal transmitted from the communication sensor device 100 are transmitted to the detection target moving as shown in FIG. 4A at the timing shown in FIG. 4B, and reflected by the detection target during transmission. Then, the reflected wave reception signal received by the antenna 1 and a part of the transmission wave are input to the detection circuit 4.
  • the amplitude of the combined signal of a part of the transmission wave and the reflected wave reception signal depends on the phase difference between the two signals. Changes.
  • phase difference is 0 degree
  • the amplitude of the synthesized signal is maximized, and the amplitude of the synthesized signal is reversed when the phase is opposite (phase difference is 180 degrees).
  • the detection circuit 4 detects a composite signal of a part of the input transmission wave and the reflected wave reception signal, and outputs a detection signal corresponding to the amplitude.
  • the signal processing circuit 6 performs signal processing such as amplification, sampling, AD conversion, etc. on the output signal of the LPF 5, and the signal processing circuit 6 or the control circuit 7 performs analysis, feature extraction, or the like to detect this signal.
  • the movement of the object can be detected.
  • the control circuit 7 controls the transmission / reception unit 10 and alternately repeats the transmission operation and the non-transmission operation at a constant cycle. Therefore, the frequency of the transmission operation can be kept constant, and the average transmission power can be reduced. Can be suppressed.
  • the control circuit 7 alternately repeats a detection transmission operation for obtaining one or more reflected wave reception signals and n communication transmission operations for transmitting data (n is a natural number). Thus, the frequency of the communication transmission operation can be reduced. For this reason, since the frequency which operates the modulation circuit 2a and the demodulation circuit 3a can be made low, the power consumption of the communication sensor apparatus 100 can be reduced.
  • the control circuit 7 can further reduce the power consumption of the communication sensor device by performing control so that the transmission operation is one or more detection transmission operations and the one communication transmission operation are alternately repeated. it can.
  • the detection transmission operation has a shorter time than the communication transmission operation, the power consumption of the communication sensor device can be further reduced.
  • the communication sensor device 100 As described above, according to the communication sensor device 100 according to the embodiment of the present invention, it is possible to provide a communication sensor device that can reduce the sensitivity of the sensor and reduce the power consumption.
  • the communication sensor device 100 As described above, the communication sensor device 100 according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. Is possible. For example, the present invention can be modified as follows, and these embodiments also belong to the technical scope of the present invention.
  • the communication sensor device has been described with reference to a drawing away from the detection target.
  • the communication sensor device may be carried or worn to detect the body movement of the detection target.
  • the detection transmission operation may be performed once or more, and is used.
  • the frequency may be appropriately changed according to the purpose.
  • the communication transmission operation is performed once every four detection transmission operations has been described.
  • the communication transmission operation may be performed more than once and used.
  • the frequency may be appropriately changed according to the purpose.

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans le but de proposer un dispositif de détection de communication pour lequel la sensibilité de détection est faiblement réduite et qui peut réduire la consommation énergétique, la présente invention comprend les éléments suivants : une antenne (1) qui émet un signal d'émission et reçoit un signal de communication en provenance d'un partenaire de communication et un signal de réception d'onde réfléchie qui est une onde réfléchie par un objet détecté ; une unité d'émission et de réception (10) dotée d'un circuit d'émission (2) qui possède un circuit de modulation (2a), et d'un circuit de réception (3) qui possède un circuit de démodulation (3a), les deux étant raccordés à l'antenne (1) et servant à communiquer ; un circuit de commande (7) qui est connecté à l'unité d'émission et de réception (10) et qui commande l'unité d'émission et de réception (10) ; un circuit de détection (4) permettant de détecter un signal synthétisé d'une partie d'un signal d'émission et un signal de réception d'onde réfléchie, pendant l'émission d'un signal d'émission provenant du circuit d'émission (2) par l'intermédiaire de l'antenne (1) ; un filtre LPF (5) qui est connecté au circuit de détection (4) et dans lequel une fréquence de coupure est définie de façon à être inférieure à une fréquence de modulation permettant de réaliser une modulation à l'aide du circuit de modulation (2a) ; et un circuit de traitement de signaux (6) permettant de traiter le signal sorti par le filtre LPF (5). Une opération d'émission et une opération de non-émission sont alternativement répétées dans une période fixe, et l'opération d'émission est réalisée de sorte qu'une opération d'émission pour une détection et une opération d'émission pour une communication soient alternativement répétées.
PCT/JP2013/006052 2012-10-17 2013-10-10 Dispositif de détection de communication WO2014061239A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380052908.0A CN104737031A (zh) 2012-10-17 2013-10-10 通信传感器装置
JP2014541934A JPWO2014061239A1 (ja) 2012-10-17 2013-10-10 通信センサ装置

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JP2012229392 2012-10-17
JP2012-229392 2012-10-17

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WO2014061239A1 true WO2014061239A1 (fr) 2014-04-24

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JP2017527146A (ja) * 2014-06-11 2017-09-14 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． 感知画面、制御回路及びその制御方法、並びに感知画面装置

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CN113611063B (zh) * 2021-08-19 2023-01-20 郑州丰嘉科技有限公司 博物馆展柜复合报警探测器和防盗报警方法

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JP2008059058A (ja) * 2006-08-29 2008-03-13 Hitachi Ltd センサノード
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JP2011145111A (ja) * 2010-01-12 2011-07-28 Panasonic Corp Ｕｗｂセンサシステム及びリーダ装置
WO2011142211A1 (fr) * 2010-05-11 2011-11-17 アルプス電気株式会社 Appareil de détection de communication

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JP2008059058A (ja) * 2006-08-29 2008-03-13 Hitachi Ltd センサノード
JP2010095207A (ja) * 2008-10-20 2010-04-30 Panasonic Corp サイクルコンピュータシステム
JP2011145111A (ja) * 2010-01-12 2011-07-28 Panasonic Corp Ｕｗｂセンサシステム及びリーダ装置
WO2011142211A1 (fr) * 2010-05-11 2011-11-17 アルプス電気株式会社 Appareil de détection de communication

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Publication number Priority date Publication date Assignee Title
JP2017527146A (ja) * 2014-06-11 2017-09-14 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． 感知画面、制御回路及びその制御方法、並びに感知画面装置
US10530040B2 (en) 2014-06-11 2020-01-07 Huawei Technologies Co., Ltd. Sensing screen, control circuit and control method thereof, and sensing screen apparatus
US11199917B2 (en) 2014-06-11 2021-12-14 Huawei Technologies Co., Ltd. Sensing screen, control circuit and control method thereof, and sensing screen apparatus

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JPWO2014061239A1 (ja) 2016-09-05
CN104737031A (zh) 2015-06-24

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