WO2016063741A1 - Transmission/reception system - Google Patents

Transmission/reception system Download PDF

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Publication number
WO2016063741A1
WO2016063741A1 PCT/JP2015/078637 JP2015078637W WO2016063741A1 WO 2016063741 A1 WO2016063741 A1 WO 2016063741A1 JP 2015078637 W JP2015078637 W JP 2015078637W WO 2016063741 A1 WO2016063741 A1 WO 2016063741A1
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WO
WIPO (PCT)
Prior art keywords
data
transmission
unit
signal strength
reception
Prior art date
Application number
PCT/JP2015/078637
Other languages
French (fr)
Japanese (ja)
Inventor
本田　英成
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 JP2016555174A priority Critical patent/JP6268306B2/en
Publication of WO2016063741A1 publication Critical patent/WO2016063741A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits

Definitions

  • the present invention relates to a transmission / reception system, and more particularly to a transmission / reception system that transmits and receives data using a radio signal.
  • FIG. 8 is an explanatory diagram relating to a conventional transmission / reception system, and shows a configuration of a conventional receiver 230 according to Patent Document 1.
  • FIG. 8 is an explanatory diagram relating to a conventional transmission / reception system, and shows a configuration of a conventional receiver 230 according to Patent Document 1.
  • the receiver 230 is a receiver of a transmission / reception system using a radio signal (electromagnetic wave signal). As shown in FIG. 8, an antenna 211, a receiver 212, an A / D converter 215, a control circuit 216, A timing generation unit 217.
  • the receiving unit 212 receives a radio signal from a transmitter (not shown) using the antenna 211 and also an RSSI that is a detection signal corresponding to a received electric field strength (RSSI: Received Signal Indicator) that is a signal strength of the received radio signal.
  • RSSI Received Signal Indicator
  • the A / D converter 215 converts the RSSI signal (analog signal) supplied from the receiving unit 212 into a digital signal, and outputs the converted digital signal to the control circuit 216.
  • the control circuit 216 controls the A / D converter 215 and the timing generation unit 217. Further, the control circuit 216 performs switching between the low power consumption mode and the normal power consumption mode based on the signal from the A / D converter 215.
  • the timing generation unit 217 starts or stops the operation of the A / D converter 215 according to a preset timing.
  • the A / D converter 215 starts or stops operating according to a preset timing, and the control circuit 216 operates in the low power consumption mode and the normal mode based on the signal from the A / D converter 215.
  • the A / D converter 215, the control circuit 216, and the like are intermittently operated.
  • Patent Document 1 does not disclose a method for suppressing power consumption on the transmitter side, the power consumption on the transmitter side is reduced by a method of intermittently operating the transmitter side as in the receiver 230 side. Can be suppressed.
  • the present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to reduce power consumption on the receiver side and to reduce the number of data transmissions from the transmitter.
  • An object of the present invention is to provide a transmission / reception system capable of reliably receiving data.
  • the transmission / reception system includes a transmitter that transmits data using a radio signal, a receiving unit that receives the data, and a signal that detects a signal strength of the radio signal.
  • the transmitter includes the non-transmission time during which the data is not transmitted. Data transmission is repeated a plurality of times, and the signal strength detection unit repeats the signal strength detection a plurality of times with a non-detection time during which the signal strength is not detected, and the control unit detects the detection result of the signal strength detection unit.
  • the data receiving function for receiving the data is activated or stopped on the basis of the above.
  • the signal intensity detection unit can be intermittently operated by repeating the detection of the signal intensity with the non-detection time interposed therebetween. Then, based on the signal strength detected by the signal strength detection unit, the control unit causes the reception unit to start and stop the data reception function, whereby the reception unit can be intermittently operated. Then, wasteful power consumption on the receiver side can be suppressed by intermittently operating the receiving unit and the signal strength detecting unit.
  • signal processing for detecting signal strength is usually simpler than signal processing for receiving data, so even if the signal strength detection time is shortened by intermittently operating the signal strength detector.
  • the signal strength corresponding to the transmission of data from the transmitter can be detected. Based on the detection result of the signal strength detector, the receiver can start or stop the data reception function, so that the receiver can ensure the data from the transmitter even if the number of data transmissions from the transmitter is small. Will be able to receive.
  • the transmission / reception system wherein the non-detection time is set to be shorter than a data transmission time when the transmitter transmits the data, and the reception unit activates the data reception function.
  • the starting time at the time is set to be shorter than the non-transmission time.
  • the non-detection time is set to be shorter than the data transmission time
  • the signal strength can be detected at least once in one data transmission.
  • the certainty of signal intensity detection can be increased.
  • the activation time is set to be shorter than the non-transmission time
  • the reception unit when the signal strength detection unit detects the signal strength corresponding to the data transmission by the end of the first data transmission, the reception unit
  • the data reception function can be normally operated earlier than the second data transmission start, and the reception unit can reliably receive the data in the second and subsequent data transmissions. As a result, it is possible to further improve the reliability when the receiving unit receives data.
  • the transmission / reception system wherein when the signal strength detected by the signal strength detection unit is less than a predetermined value, the control unit causes the reception unit to stop the data reception function and When the signal intensity detected by the intensity detection unit is equal to or greater than a predetermined value, the data reception function is activated by the reception unit.
  • the signal strength detected by the signal strength detection unit increases when data is transmitted, and the signal strength detected by the signal strength detection unit when data transmission is not performed. Get smaller. For this reason, when the signal strength detected by the signal strength detection unit is less than a predetermined value, the control unit causes the reception unit to stop the data reception function, and the signal strength detected by the signal strength detection unit is greater than or equal to the predetermined value.
  • the data reception function of the reception unit can be appropriately operated in response to data transmission from the transmitter, and when the reception unit receives data The certainty can be further improved.
  • the transmission / reception system is characterized in that the radio signal is an electromagnetic wave signal in a predetermined frequency band, and the signal intensity is a reception electric field intensity of the electromagnetic wave signal.
  • the radio signal used for data transmission is an electromagnetic wave signal in a predetermined frequency band. Then, by adding modulation such as digital modulation to the electromagnetic wave signal, data including more information can be transmitted at high speed. Further, when the wireless signal used for data transmission is an electromagnetic wave signal, the signal intensity can be easily detected by detecting the received electric field intensity of the electromagnetic wave signal.
  • the transmission / reception system wherein the transmitter repeats transmission of the data at least three times in response to one operation, and the signal strength detection unit includes the signal with the non-detection time interposed therebetween.
  • the detection operation that repeats the intensity detection at least twice is repeated a plurality of times with a detection pause time during which the detection of the signal strength is paused, and the detection pause time is the second time from the end of transmission of the data. It is set so as to be longer than the time until the start of transmission of data and shorter than the time from the start of transmission of the first data to the end of transmission of the second data.
  • the signal strength detection unit repeats the detection operation that repeats the detection of the signal strength at least twice with the non-detection time interposed therebetween by repeating the detection operation a plurality of times with the detection pause time during which the detection of the signal strength is suspended.
  • the operation time of the signal strength detection unit can be further shortened, and the power consumption of the signal strength detection unit can be further suppressed.
  • the detection pause time is longer than the time from the end of the first data transmission to the start of the second data transmission, and from the time from the start of the first data transmission to the end of the second data transmission.
  • the signal strength is detected in at least one of the first data transmission and the second data transmission, and the signal strength corresponding to the data transmission is detected. be able to. Since the transmitter repeats data transmission at least three times in response to one operation, the signal strength detection unit detects the signal strength corresponding to the data transmission by the end of the second data transmission. In this case, the reception unit can normally operate the data reception function earlier than the start of the third data transmission, and the reception unit can reliably receive the data in the third and subsequent data transmissions. As a result, it is possible to further improve the reliability when the receiving unit receives data.
  • the transmission / reception system which can suppress the power consumption by the side of a receiver, and can receive data reliably even if the frequency
  • FIG. 1 is an explanatory diagram showing the configuration of the transmission / reception system according to the first embodiment of the present invention, and is a block diagram showing the overall configuration of the transmission / reception system 1.
  • FIG. 2 is an explanatory diagram showing the configuration of the transmitter according to the first embodiment of the present invention.
  • FIG. 2A is a block diagram illustrating the configuration of the transmitter 10
  • FIG. 2A is an explanatory diagram schematically illustrating the appearance of the transmitter 10.
  • FIG. 3 is an explanatory diagram showing the configuration of the receiver according to the first embodiment of the present invention.
  • FIG. 3A is a block diagram illustrating the configuration of the receiver 20
  • FIG. 3B is a block diagram illustrating the configuration of the receiving unit 22.
  • the transmission / reception system 1 is a transmission / reception system including a transmitter having a power generation function and a data transmission function called a power generation switch, and a receiver corresponding to the power generation switch.
  • a transmission / reception system 1 is used, for example, as a switch for operating an electronic device wirelessly from a remote position.
  • the transmission / reception system 1 includes a transmitter 10 and a receiver 20 as shown in FIG.
  • the transmitter 10 is a transmitter called a power generation switch. As illustrated in FIG. 2A, the transmitter 10 includes an input unit 11, a vibration power generation unit 12, a transmission unit 13, and a transmission antenna 14.
  • the input part 11 has the operation part 11a hold
  • the input unit 11 generates vibration in response to an input operation for pressing the operation unit 11 a from the operator, and transmits the generated vibration to the vibration power generation unit 12.
  • the vibration power generation unit 12 has a vibration power generation element (not shown) such as an electromagnetic induction method or a piezoelectric method.
  • the vibration power generation unit 12 performs vibration power generation using the vibration transmitted from the input unit 11, and supplies power obtained by the power generation to the transmission unit 13. Since the principle of such vibration power generation is well known, detailed description is omitted, but normally, the generation time of the vibration accompanying the input operation is short, so the time for generating electric power is also short.
  • the transmission unit 13 receives a supply of power from the vibration power generation unit 12 to activate the data transmission function, and transmits data corresponding to the input operation using a radio signal.
  • a radio signal an electromagnetic wave signal in the frequency band of the UHF band (300 MHz to 3 GHz) is used.
  • the transmission unit 13 generates a radio signal including data as a modulation component by applying digital modulation such as FSK to the electromagnetic wave signal to be a radio signal, and transmits the generated radio signal via the transmission antenna 14. ing.
  • transmitting a radio signal including data corresponding to an input operation as a modulation component is abbreviated as transmitting data using the radio signal.
  • the receiver 20 is a receiver corresponding to the power generation switch. As illustrated in FIG. 3A, the receiver 20 includes a reception antenna 21, a reception unit 22, a signal strength detection unit 23, and a control unit 24.
  • the reception unit 22 includes a high frequency circuit unit 22a, a detection unit 22b, and a signal processing unit 22c.
  • a radio signal transmitted from the transmitter 10 is transmitted to the high frequency circuit unit 22a via the reception antenna 21.
  • the high frequency circuit part 22a adds the process of noise removal, signal amplification, etc. to the transmitted radio signal, and outputs it as a signal before a detection.
  • the detector 22b detects the pre-detection signal and outputs a detection signal.
  • the signal processing unit 22c converts the detection signal into a signal that can be processed by the control unit 24 and outputs the signal as data.
  • the data output from the signal processing unit 22 c is transmitted to the control unit 24.
  • the receiving unit 22 receives data transmitted from the transmitter 10 in this way.
  • the radio signal transmitted from the transmitter 10 is transmitted to the signal strength detection unit 23 via the reception antenna 21.
  • the signal strength detection part 23 has detected the signal strength of the transmitted radio signal.
  • the signal strength detected by the signal strength detector 23 is a received electric field strength (RSSI: Received Signal Indicator) of an electromagnetic wave signal that is a radio signal transmitted from the transmitter 10.
  • RSSI Received Signal Indicator
  • Information on the signal strength detected by the signal strength detection unit 23 is transmitted to the control unit 24.
  • the control unit 24 controls the receiving unit 22 and the signal intensity detecting unit 23. In addition, the control unit 24 monitors the receiving unit 22 and the signal strength detecting unit 23 to obtain data received by the receiving unit 22 and information on the signal strength detected by the signal strength detecting unit 23, as well as the obtained data and Various decisions are made based on the information.
  • the control unit 24 is connected to an electronic device (not shown), and transmits an instruction corresponding to the data received by the receiving unit 22 to the electronic device to execute a predetermined operation.
  • the transmission / reception system 1 has such a configuration.
  • FIG. 4 is an explanatory diagram showing data transmission / reception timing according to the first embodiment of the present invention.
  • FIG. 4A is a timing chart showing data transmission timing by the transmission unit 13 on the transmitter 10 side.
  • FIG. 4B is a timing chart showing the timing of signal strength detection by the signal strength detector 23 on the receiver 20 side.
  • FIG. 4C is a timing chart showing the timing of data reception by the receiving unit 22 on the transmitter 10 side.
  • ta1 is a data transmission time in one data transmission when the transmission unit 13 transmits data.
  • ta2 is a non-transmission time between the data transmission time ta1 and the data transmission time ta1 at which the transmission unit 13 does not transmit data.
  • T1 is the first data transmission start time
  • T2 is the first data transmission end time
  • T3 is the second data transmission start time
  • T4 is the second data transmission start time. This is the data transmission end time.
  • Tb1 is a detection time in one detection of the signal strength when the signal strength detector 23 detects the signal strength.
  • tb2 is a non-detection time between the detection time tb1 and the detection time tb1 when the signal strength detection unit 23 does not detect the signal strength.
  • Tc1 is the time from when the control unit 24 instructs activation of the data reception function until the data reception function of the reception unit 22 operates normally, that is, activation when the reception unit 22 activates the data reception function. It's time.
  • tc2 is a time during which the data reception function of the reception unit 22 operates normally and data can be received, that is, a data reception time.
  • the input unit 11 waits for an input operation from the operator, the vibration power generation unit 12 performs vibration power generation in response to the input operation to the input unit 11, and the transmission unit 13 performs the input operation. Is transmitted to the receiver 20.
  • the data transmission by the transmission unit 13 is an intermittent operation in which data transmission is repeated a plurality of times with a non-transmission time ta2 being sandwiched in response to one input operation.
  • the transmission frequency of the data when the transmission part 13 transmits data with respect to one input operation is limited to about several times.
  • the transmission unit 13 repeats data transmission twice for one input operation.
  • the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10.
  • the signal intensity detection by the signal intensity detection unit 23 is an intermittent operation in which the signal intensity detection is repeated a plurality of times with the signal intensity non-detection time tb2.
  • signal processing when detecting signal strength is simpler than signal processing when receiving data, and therefore the receiving unit 22 indicates the detection time tb1 when the signal strength detecting unit 23 detects the signal strength. It can be made shorter than the data reception time tc2 when receiving data, and even if the detection time tb1 is shortened, the signal strength corresponding to the data transmission from the transmitter 10 can be detected. Yes.
  • the non-detection time tb2 when the signal strength detection unit 23 does not detect the signal strength is set to be shorter than the data transmission time ta1 when the transmission unit 13 transmits data.
  • the signal intensity can be detected at least once in each transmission of data.
  • the control unit 24 activates or stops the data reception function in the reception unit 22 based on the detection result of the signal strength detection unit 23. Then, when there is data transmission from the transmitter 10 in response to the input operation, the control unit 24 activates the data reception function by the reception unit 22 to receive the data, and the data received by the reception unit 22 An instruction corresponding to the above is transmitted to the electronic device to execute a predetermined operation.
  • the control unit 24 causes the reception unit 22 to stop the data reception function when the signal strength detected by the signal strength detection unit 23 is less than a predetermined value, and the signal strength detection unit 23 detects the signal strength.
  • the data reception function is activated in the reception unit 22.
  • the signal strength detected by the signal strength detection unit 23 increases.
  • the signal strength detected by the signal strength detection unit 23 decreases. Therefore, the reception of data by the receiving unit 22 is an intermittent operation that activates the data reception function only when there is data transmission from the transmitter 10.
  • the activation time tc1 when the reception unit 22 activates the data reception function is set to be shorter than the non-transmission time ta2 when the transmission unit 13 does not transmit data, and signal strength detection is performed.
  • the unit 23 detects the signal strength corresponding to the data transmission by the first data transmission end time T2
  • the receiving unit 22 properly performs the data reception function earlier than the second data transmission start time T3. It can be activated.
  • FIG. 5 is an explanatory diagram showing a data transmission / reception procedure according to the first embodiment of the present invention.
  • the flowchart on the left side of FIG. 5 shows an operation procedure when transmitting data on the transmitter 10 side
  • the flowchart on the right side of FIG. 5 shows an operation procedure when receiving data on the receiver 20 side.
  • step Sa1 the input unit 11 waits for an input operation from the operator.
  • step Sa2 whether or not to continue waiting is selected based on the presence or absence of an input operation from the operator. If there is no input operation in step Sa2, the process returns to step Sa1 and the input unit 11 continues to wait for the input operation. If there is an input operation in step Sa2, the process moves to step Sa3.
  • step Sa3 the vibration power generation unit 12 performs vibration power generation in response to the input operation.
  • step Sa4 the transmission unit 13 activates the data transmission function in response to the supply of power.
  • step Sa5 the transmission unit 13 transmits the first data corresponding to the input operation.
  • step Sa6 the transmission unit 13 transmits data for the second time with the non-transmission time ta2 interposed therebetween. Then, data transmission ends on the transmitter 10 side. After that, the process may return to step Sa1 to repeat the data transmission again.
  • step Sb1 the transmission unit 13 stops the data reception function and stands by.
  • step Sb2 the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10 by the intermittent operation.
  • step Sb2 the signal strength detection unit 23 detects the signal strength corresponding to the first data transmission in step Sa5.
  • step Sb3 the control unit 24 makes a determination based on the magnitude of the signal strength detected by the signal strength detection unit 23.
  • step Sb3 when the magnitude of the signal strength is less than the predetermined value, the control unit 24 determines that no data is transmitted from the transmitter 10. Then, returning to step Sb2, the signal strength detection unit 23 continues to detect the signal strength.
  • step Sb3 when the magnitude of the signal strength is equal to or greater than a predetermined value, the control unit 24 determines that data has been transmitted from the transmitter 10. And it moves to step Sb4.
  • step Sb4 the control unit 24 activates the data reception function in the receiver 20, and the reception unit 22 is ready to receive data.
  • the receiving unit 22 receives data transmitted from the transmitter 10.
  • step Sb5 the receiving unit 22 receives data corresponding to the second data transmission in step Sa6.
  • step Sb6 the control unit 24 transmits an instruction corresponding to the data received by the receiving unit 22 to the electronic device to execute a predetermined operation.
  • step Sb7 the control unit 24 causes the receiver 20 to stop the data reception function again. Then, the reception of data is completed on the receiver 20 side. After that, it is possible to return to step Sb1 and repeat data reception again.
  • the transmission / reception system 1 data corresponding to the input operation is transmitted / received according to such a procedure.
  • the signal strength detection unit 23 can be intermittently operated by repeating the detection of the signal strength across the non-detection time ta2. Then, based on the signal strength detected by the signal strength detection unit 23, the control unit 24 causes the reception unit 22 to start and stop the data reception function, whereby the reception unit 22 can be intermittently operated. And the wasteful power consumption by the side of the receiver 20 can be suppressed by operating the receiving part 22 and the signal strength detection part 23 intermittently. Moreover, signal processing for detecting signal strength is usually simpler than signal processing for receiving data, so that the signal strength detection unit 23 is intermittently operated to shorten the signal strength detection time.
  • the signal strength corresponding to the transmission of data from the transmitter 10 can be detected. Then, based on the detection result of the signal strength detection unit 23, the reception unit 22 activates or stops the data reception function so that the reception unit 22 can transmit the data to the transmitter 10 even if the number of data transmissions from the transmitter 10 is small. The data from can be received reliably.
  • the non-detection time tb2 is set to be shorter than the data transmission time ta1, so that the signal strength can be detected at least once in one data transmission. it can. As a result, the certainty of signal intensity detection can be increased.
  • the signal strength detection unit 23 is a signal corresponding to data transmission by the first data transmission end time T2.
  • the receiving unit 22 can normally operate the data receiving function earlier than the second data transmission start time T3, and the receiving unit 22 ensures the data transmission in the second and subsequent data transmissions. Can be received. As a result, it is possible to further improve the reliability when the receiving unit 22 receives data.
  • the signal strength detected by the signal strength detection unit 23 increases when data transmission is performed, and the signal strength detection unit 23 when data transmission is not performed.
  • the signal intensity detected by becomes smaller. Therefore, when the signal strength detected by the signal strength detection unit 23 is less than a predetermined value, the control unit 24 causes the reception unit 22 to stop the data reception function, and the signal strength detected by the signal strength detection unit 23 is predetermined.
  • the data reception function of the reception unit 22 can be appropriately activated in response to the transmission of data from the transmitter 10 by activating the data reception function of the reception unit 22 and receiving. It is possible to further improve the certainty when the unit 22 receives data.
  • the radio signal transmitted from the transmitter 10 is an electromagnetic wave signal in the frequency band of the UHF band. Then, by adding digital modulation such as FSK to such an electromagnetic wave signal, data including more information can be transmitted at high speed. Further, when the radio signal transmitted from the transmitter 10 is such an electromagnetic wave signal, the signal intensity can be easily detected by detecting the received electric field intensity of the electromagnetic wave signal.
  • FIG. 6 is an explanatory diagram (block diagram) showing a configuration of a transmission / reception system according to the second embodiment of the present invention.
  • the transmission / reception system 101 includes a transmitter 10 and a receiver 20, as shown in FIG.
  • the transmitter 10 includes an input unit 11, a vibration power generation unit 12, a transmission unit 13, and a transmission antenna 14.
  • the receiver 20 includes a reception antenna 21, a reception unit 22, a signal strength detection unit 23, and a control unit 24.
  • the configuration of the transmission / reception system 101 is the same as the configuration of the transmission / reception system 1 according to the first embodiment.
  • the operation of the transmission / reception system 101 at the time of data transmission / reception is different from the operation of the transmission / reception system 1.
  • FIG. 7 is a timing chart showing data transmission / reception timing according to the second embodiment of the present invention.
  • FIG. 7A shows the timing of data transmission by the transmitter 13 on the transmitter 10 side.
  • FIG. 7B shows the timing of signal strength detection by the signal strength detector 23 on the receiver 20 side.
  • FIG. 7C shows the timing of data reception by the receiving unit 22 on the transmitter 10 side.
  • T5 is the third data transmission start time
  • T6 is the third data transmission end time.
  • tb3 is a detection pause time during which the signal strength detection unit 23 pauses signal strength detection.
  • the vibration power generation unit 12 performs vibration power generation in response to an input operation on the input unit 11, and the transmission unit 13 sends data corresponding to the input operation to the receiver 20. Sending.
  • the transmission unit 13 repeats data transmission three times for one input operation, as shown in FIG.
  • the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10, and in response to the input operation, the signal strength of the data from the transmitter 10 is detected.
  • the control unit 24 activates the data reception function of the reception unit 22, and the reception unit 22 receives the data.
  • the signal strength detection unit 23 pauses the signal strength detection in the detection operation in which the signal strength detection is repeated twice with the non-detection time tb2 interposed therebetween.
  • the detection pause time tb3 is repeated several times.
  • the signal intensity detection unit 23 performs such an intermittent operation, so that the operation time of the signal intensity detection unit 23 is further shortened as compared with the first embodiment.
  • the detection pause time tb3 is longer than the time from the first data transmission end time T2 to the second data transmission start time T3, and the first data transmission start time. It is set to be shorter than the time from T1 to the second data transmission end time T4, and the signal strength is detected in at least one of the first data transmission and the second data transmission. Can be done.
  • the transmission unit 13 repeats data transmission three times for one input operation, and the data reception function activation time tc1 is the same as in the first embodiment. In addition, it is set to be shorter than the non-transmission time ta2. By setting the number of data transmissions for one input operation to three in this way, the signal intensity corresponding to the data transmission in the first or second data transmission is completed.
  • the data reception function of the receiving unit 22 can be activated before the third data transmission start time T5.
  • the signal strength detection unit 23 performs a plurality of detection operations that repeat the detection of the signal strength twice with the non-detection time tb2 in between, with the detection pause time tb3 in which the detection of the signal strength is paused. By repeating the operation once, the operation time of the signal strength detection unit 23 can be further shortened, and the power consumption of the signal strength detection unit 23 can be further suppressed.
  • the detection pause time tb3 is longer than the time from the transmission end time T2 of the first data to the transmission start time T3 of the second data, and the second data from the transmission start time T1 of the first data. Therefore, the signal strength is detected in at least one of the first data transmission and the second data transmission. The signal strength corresponding to the transmission can be detected. Since the transmission unit 13 of the transmitter 10 repeats data transmission at least three times in response to one operation, the signal strength detection unit 23 transmits the data before the second data transmission end time T4. When the signal strength corresponding to is detected, the reception unit 22 can normally operate the data reception function earlier than the transmission start time T5 of the third data, and the reception unit 22 in the third and subsequent data transmissions. Can reliably receive the data. As a result, it is possible to further improve the reliability when the receiving unit 22 receives data.
  • the transmitter 10 may be a transmitter having power supply means such as a battery instead of the power generation switch. Even if the transmitter 10 is such a transmitter, the same effect as that of the present embodiment can be obtained when the number of data transmissions is limited in order to suppress power consumption.
  • the configuration on the transmitter 10 side or the receiver 20 side may be appropriately changed according to the system standard or the like.
  • the transmitter 10 may further include a power storage unit for storing electric power obtained by vibration power generation, a timer for transmitting data at a predetermined time, and the like.
  • the receiving unit 22 and the signal strength detecting unit 23 may be integrally formed in one integrated circuit.
  • the transmission unit 13 may repeat data transmission three or more times for one input operation.
  • the transmission unit 13 may repeat data transmission four or more times for one input operation.
  • the signal strength detection unit 23 may repeat the detection of the signal strength three times or more in one detection operation.
  • the radio signal used for data transmission may be an electromagnetic wave signal in a frequency band other than the UHF band.
  • the modulation applied to the radio signal may be a modulation other than FSK modulation.
  • the wireless signal used for data transmission may be a wireless signal other than an electromagnetic wave signal such as an infrared ray or an ultrasonic wave.

Abstract

This transmission/reception system 1 is provided with: a transmitter 10 for transmitting data using a radio signal; and a receptor 20 having a reception section 22 for receiving data, a signal intensity detection section 23 for detecting the signal intensity of the radio signal, and a control section 24 for controlling the reception section 22 and the signal intensity detection section 23, wherein the transmitter 10 repeats transmission of data a plurality of times with non-transmitting periods in which no data is transmitted intervening therebetween, the signal intensity detection section 23 repeats detection of the signal intensity a plurality of times with non-detection periods in which no signal intensity is detected intervening therebetween, and the control section 24 causes the reception section 22 to activate or cease a data reception function for receiving data on the basis of the detection result of the signal intensity detection section 23.

Description

送受信システムTransmission / reception system
　本発明は、送受信システムに関し、特に、無線信号を用いてデータの送受信を行う送受信システムに関する。 The present invention relates to a transmission / reception system, and more particularly to a transmission / reception system that transmits and receives data using a radio signal.
　近年、電磁波信号等の無線信号を用いてデータの送受信を行う送受信システムにおいて、送信機側や受信機側の電力消費を抑制することが重要となっている。送信機側や受信機側の電力消費を抑制する方法としては、送信機側の動作を間欠動作させたり、受信機側の動作を間欠動作させたりする方法等が提案されている。 In recent years, in a transmission / reception system that transmits and receives data using a radio signal such as an electromagnetic wave signal, it is important to suppress power consumption on the transmitter side and the receiver side. As a method for suppressing power consumption on the transmitter side or the receiver side, a method of intermittently operating the transmitter side or an intermittent operation of the receiver side has been proposed.
　受信機側の動作を間欠動作させる従来の送受信システムに関しては、特許文献１等が開示されている。以下、従来の送受信システムについて、図８を用いて説明する。図８は、従来の送受信システムに関する説明図であり、特許文献１に係る従来の受信機２３０の構成を示している。 Patent document 1 etc. are disclosed regarding the conventional transmission / reception system which makes the operation | movement of the receiver side operate intermittently. Hereinafter, a conventional transmission / reception system will be described with reference to FIG. FIG. 8 is an explanatory diagram relating to a conventional transmission / reception system, and shows a configuration of a conventional receiver 230 according to Patent Document 1. In FIG.
　受信機２３０は、無線信号（電磁波信号）を用いた送受信システムの受信機であり、図８に示すように、アンテナ２１１と、受信部２１２と、Ａ／Ｄコンバータ２１５と、制御回路２１６と、タイミング生成部２１７とを備えている。受信部２１２は、アンテナ２１１を用いて図示しない送信機からの無線信号を受信すると共に、受信した無線信号の信号強度である受信電界強度（ＲＳＳI：Ｒｅｃｉｅｖｅｄ　Ｓｉｇｎａｌ　Ｉｎｄｉｃａｔｏｒ）に対応した検波信号であるＲＳＳＩ信号をＡ／Ｄコンバータ２１５に出力している。 The receiver 230 is a receiver of a transmission / reception system using a radio signal (electromagnetic wave signal). As shown in FIG. 8, an antenna 211, a receiver 212, an A / D converter 215, a control circuit 216, A timing generation unit 217. The receiving unit 212 receives a radio signal from a transmitter (not shown) using the antenna 211 and also an RSSI that is a detection signal corresponding to a received electric field strength (RSSI: Received Signal Indicator) that is a signal strength of the received radio signal. The signal is output to the A / D converter 215.
　Ａ／Ｄコンバータ２１５は、受信部２１２から供給されたＲＳＳＩ信号（アナログ信号）をデジタル信号に変換し、変換されたデジタル信号を制御回路２１６に出力している。制御回路２１６は、Ａ／Ｄコンバータ２１５とタイミング生成部２１７とを制御している。また、制御回路２１６は、Ａ／Ｄコンバータ２１５からの信号に基づいて低消費電力モードと通常消費電力モードとの切り替えを行っている。タイミング生成部２１７は、予め設定されたタイミングに従ってＡ／Ｄコンバータ２１５の動作を開始させたり停止させたりしている。 The A / D converter 215 converts the RSSI signal (analog signal) supplied from the receiving unit 212 into a digital signal, and outputs the converted digital signal to the control circuit 216. The control circuit 216 controls the A / D converter 215 and the timing generation unit 217. Further, the control circuit 216 performs switching between the low power consumption mode and the normal power consumption mode based on the signal from the A / D converter 215. The timing generation unit 217 starts or stops the operation of the A / D converter 215 according to a preset timing.
　そして、受信機２３０では、Ａ／Ｄコンバータ２１５が予め設定されたタイミングに従って動作を開始したり停止したりし、制御回路２１６がＡ／Ｄコンバータ２１５からの信号に基づいて低消費電力モードと通常消費電力モードとの切り替えを行うことによって、Ａ／Ｄコンバータ２１５や制御回路２１６等を間欠動作させている。そして、Ａ／Ｄコンバータ２１５や制御回路２１６等を間欠動作させることによって、受信機２３０側の無駄な電力消費を抑制している。尚、特許文献１では送信機側の電力消費を抑制する方法は開示されていないが、受信機２３０側と同様に送信機側の動作を間欠動作させる方法等によって、送信機側の電力消費を抑制することができる。 In the receiver 230, the A / D converter 215 starts or stops operating according to a preset timing, and the control circuit 216 operates in the low power consumption mode and the normal mode based on the signal from the A / D converter 215. By switching to the power consumption mode, the A / D converter 215, the control circuit 216, and the like are intermittently operated. Then, by intermittently operating the A / D converter 215, the control circuit 216, and the like, useless power consumption on the receiver 230 side is suppressed. Although Patent Document 1 does not disclose a method for suppressing power consumption on the transmitter side, the power consumption on the transmitter side is reduced by a method of intermittently operating the transmitter side as in the receiver 230 side. Can be suppressed.
特開２００７－６７７８６号公報JP 2007-67786 A
　近年、送信機側や受信機側の電力消費の抑制に対する重要度が更に高まっている。それに対して、特許文献１に係る従来の受信機２３０では、送信機から無線信号が送信されていなくても、受信部２１２が常時作動し、Ａ／Ｄコンバータ２１５が予め設定されたタイミングに従って間欠動作していた。そのため、送信機から無線信号が送信されていない場合には、受信部２１２やＡ／Ｄコンバータ２１５の動作に伴って受信機２３０側で無駄な電力が消費され、それが受信機２３０側の電力消費の抑制を妨げていた。 In recent years, the importance of suppressing power consumption on the transmitter side and the receiver side has further increased. On the other hand, in the conventional receiver 230 according to Patent Document 1, even when no radio signal is transmitted from the transmitter, the reception unit 212 is always operated, and the A / D converter 215 is intermittent according to a preset timing. It was working. Therefore, when a radio signal is not transmitted from the transmitter, useless power is consumed on the receiver 230 side along with the operation of the reception unit 212 and the A / D converter 215, and this is the power on the receiver 230 side. Constraining consumption.
　また、近年、送信機側の電力消費を更に抑制するために、発電スイッチのように入力操作に伴う振動を利用してデータの送信のための電力を自ら発生させる送信機が開発されている。このような送信機では、外部からの電力供給が不要であるが、電力を発生させる時間が短いため、送信機がデータを送信する際のデータの送信回数が制限され易い。それに対して、特許文献１に係る従来の受信機２３０では、Ａ／Ｄコンバータ２１５が予め設定されたタイミングに従って間欠動作しているので、送信機からのデータの送信回数が制限された場合には、送信されたデータの受信漏れを起こし易くなるという課題が有った。 In recent years, in order to further suppress the power consumption on the transmitter side, a transmitter that generates power for data transmission by itself using a vibration associated with an input operation, such as a power generation switch, has been developed. Such a transmitter does not require external power supply, but since the time for generating power is short, the number of data transmissions when the transmitter transmits data is likely to be limited. On the other hand, in the conventional receiver 230 according to Patent Document 1, since the A / D converter 215 operates intermittently according to a preset timing, the number of data transmissions from the transmitter is limited. However, there is a problem that it is easy to cause omission of transmitted data.
　本発明は、このような従来技術の実情に鑑みてなされたもので、その目的は、受信機側の電力消費を抑制することができ、且つ、送信機からのデータの送信回数が少なくてもデータを確実に受信することができる送受信システムを提供することにある。 The present invention has been made in view of the actual situation of the prior art, and an object of the present invention is to reduce power consumption on the receiver side and to reduce the number of data transmissions from the transmitter. An object of the present invention is to provide a transmission / reception system capable of reliably receiving data.
　この課題を解決するために、請求項１に記載の送受信システムは、無線信号を用いてデータを送信する送信機と、前記データを受信する受信部と、前記無線信号の信号強度を検出する信号強度検出部と、前記受信部及び前記信号強度検出部を制御する制御部とを有する受信機と、を備えた送受信システムにおいて、前記送信機は、前記データを送信しない非送信時間を挟んで前記データの送信を複数回数繰り返し、前記信号強度検出部は、前記信号強度を検出しない非検出時間を挟んで前記信号強度の検出を複数回繰り返し、前記制御部は、前記信号強度検出部の検出結果に基づいて、前記受信部に前記データを受信するためのデータ受信機能を起動又は停止させることを特徴とする。 In order to solve this problem, the transmission / reception system according to claim 1 includes a transmitter that transmits data using a radio signal, a receiving unit that receives the data, and a signal that detects a signal strength of the radio signal. In a transmission / reception system comprising an intensity detection unit and a control unit that controls the reception unit and the signal intensity detection unit, the transmitter includes the non-transmission time during which the data is not transmitted. Data transmission is repeated a plurality of times, and the signal strength detection unit repeats the signal strength detection a plurality of times with a non-detection time during which the signal strength is not detected, and the control unit detects the detection result of the signal strength detection unit. The data receiving function for receiving the data is activated or stopped on the basis of the above.
　この構成の送受信システムでは、非検出時間を挟んで信号強度の検出を繰り返すことによって信号強度検出部を間欠動作させることができる。そして、信号強度検出部が検出した信号強度に基づいて、制御部が受信部にデータ受信機能の起動及び停止を行わせることによって、受信部を間欠動作させることができる。そして、受信部と信号強度検出部とを間欠動作させることによって、受信機側の無駄な電力消費を抑制することができる。しかも、通常、信号強度を検出する際の信号処理は、データを受信する際の信号処理と比較して簡単なので、信号強度検出部を間欠動作させることによって信号強度の検出時間が短くなっても、送信機からのデータの送信に対応した信号強度を検出することができる。そして、信号強度検出部の検出結果に基づいて、受信部にデータ受信機能を起動又は停止させることによって、送信機からのデータの送信回数が少なくても、受信部が送信機からのデータを確実に受信することができるようになる。 In the transmission / reception system having this configuration, the signal intensity detection unit can be intermittently operated by repeating the detection of the signal intensity with the non-detection time interposed therebetween. Then, based on the signal strength detected by the signal strength detection unit, the control unit causes the reception unit to start and stop the data reception function, whereby the reception unit can be intermittently operated. Then, wasteful power consumption on the receiver side can be suppressed by intermittently operating the receiving unit and the signal strength detecting unit. Moreover, signal processing for detecting signal strength is usually simpler than signal processing for receiving data, so even if the signal strength detection time is shortened by intermittently operating the signal strength detector. The signal strength corresponding to the transmission of data from the transmitter can be detected. Based on the detection result of the signal strength detector, the receiver can start or stop the data reception function, so that the receiver can ensure the data from the transmitter even if the number of data transmissions from the transmitter is small. Will be able to receive.
　請求項２に記載の送受信システムは、前記非検出時間は、前記送信機が前記データを送信する際のデータ送信時間よりも短くなるように設定され、前記受信部が前記データ受信機能を起動する際の起動時間は、前記非送信時間よりも短くなるように設定されていることを特徴とする。 The transmission / reception system according to claim 2, wherein the non-detection time is set to be shorter than a data transmission time when the transmitter transmits the data, and the reception unit activates the data reception function. The starting time at the time is set to be shorter than the non-transmission time.
　この構成の送受信システムでは、非検出時間がデータ送信時間よりも短くなるように設定されているので、１回のデータの送信において信号強度の検出を少なくとも１回行うことができる。その結果、信号強度の検出の確実性を高めることができる。また、起動時間が非送信時間よりも短くなるように設定されているので、信号強度検出部が１回目のデータの送信終了までにデータの送信に対応した信号強度を検出した場合に、受信部が２回目のデータの送信開始よりも早くデータ受信機能を正常に作動させることができ、２回目以降のデータの送信において受信部がデータを確実に受信することができる。その結果、受信部がデータを受信する際の確実性を更に高めることができる。 In the transmission / reception system configured as described above, since the non-detection time is set to be shorter than the data transmission time, the signal strength can be detected at least once in one data transmission. As a result, the certainty of signal intensity detection can be increased. In addition, since the activation time is set to be shorter than the non-transmission time, when the signal strength detection unit detects the signal strength corresponding to the data transmission by the end of the first data transmission, the reception unit However, the data reception function can be normally operated earlier than the second data transmission start, and the reception unit can reliably receive the data in the second and subsequent data transmissions. As a result, it is possible to further improve the reliability when the receiving unit receives data.
　請求項３に記載の送受信システムは、前記制御部は、前記信号強度検出部が検出した前記信号強度が所定値未満であった場合に、前記受信部に前記データ受信機能を停止させ、前記信号強度検出部が検出した前記信号強度が所定値以上であった場合に、前記受信部に前記データ受信機能を起動させることを特徴とする。 The transmission / reception system according to claim 3, wherein when the signal strength detected by the signal strength detection unit is less than a predetermined value, the control unit causes the reception unit to stop the data reception function and When the signal intensity detected by the intensity detection unit is equal to or greater than a predetermined value, the data reception function is activated by the reception unit.
　この構成の送受信システムでは、データの送信が行われている時には、信号強度検出部が検出する信号強度は大きくなり、データの送信が行われていない時には、信号強度検出部が検出する信号強度は小さくなる。そのため、制御部が、信号強度検出部が検出した信号強度が所定値未満であった場合に、受信部にデータ受信機能を停止させ、信号強度検出部が検出した信号強度が所定値以上であった場合に、受信部にデータ受信機能を起動させることによって、送信機からのデータの送信に対応して受信部のデータ受信機能を適切に作動させることができ、受信部がデータを受信する際の確実性を更に高めることができる。 In the transmission / reception system configured as described above, the signal strength detected by the signal strength detection unit increases when data is transmitted, and the signal strength detected by the signal strength detection unit when data transmission is not performed. Get smaller. For this reason, when the signal strength detected by the signal strength detection unit is less than a predetermined value, the control unit causes the reception unit to stop the data reception function, and the signal strength detected by the signal strength detection unit is greater than or equal to the predetermined value. In this case, by activating the data reception function in the reception unit, the data reception function of the reception unit can be appropriately operated in response to data transmission from the transmitter, and when the reception unit receives data The certainty can be further improved.
　請求項４に記載の送受信システムは、前記無線信号は、所定の周波数帯域の電磁波信号であり、前記信号強度は、前記電磁波信号の受信電界強度であることを特徴とする。 The transmission / reception system according to claim 4 is characterized in that the radio signal is an electromagnetic wave signal in a predetermined frequency band, and the signal intensity is a reception electric field intensity of the electromagnetic wave signal.
　この構成の送受信システムでは、データの送信に用いられる無線信号は、所定の周波数帯域の電磁波信号である。そして、電磁波信号にデジタル変調等の変調を加えることによって、より多くの情報を含むデータを高速で送信することができるようになる。また、データの送信に用いられる無線信号が電磁波信号である場合、電磁波信号の受信電界強度を検出することによって、信号強度の検出を容易に行うことができる。 In the transmission / reception system with this configuration, the radio signal used for data transmission is an electromagnetic wave signal in a predetermined frequency band. Then, by adding modulation such as digital modulation to the electromagnetic wave signal, data including more information can be transmitted at high speed. Further, when the wireless signal used for data transmission is an electromagnetic wave signal, the signal intensity can be easily detected by detecting the received electric field intensity of the electromagnetic wave signal.
　請求項５に記載の送受信システムは、前記送信機は、１回の操作に対応して、前記データの送信を少なくとも３回繰り返し、前記信号強度検出部は、前記非検出時間を挟んで前記信号強度の検出を少なくとも２回繰り返す検出動作を、前記信号強度の検出を休止する検出休止時間を挟んで複数回繰り返し、前記検出休止時間は、１回目の前記データの送信終了から２回目の前記データの送信開始までの時間よりも長く、且つ、１回目の前記データの送信開始から２回目の前記データの送信終了までの時間よりも短くなるように設定されていることを特徴とする。 The transmission / reception system according to claim 5, wherein the transmitter repeats transmission of the data at least three times in response to one operation, and the signal strength detection unit includes the signal with the non-detection time interposed therebetween. The detection operation that repeats the intensity detection at least twice is repeated a plurality of times with a detection pause time during which the detection of the signal strength is paused, and the detection pause time is the second time from the end of transmission of the data. It is set so as to be longer than the time until the start of transmission of data and shorter than the time from the start of transmission of the first data to the end of transmission of the second data.
　この構成の送受信システムでは、信号強度検出部は、非検出時間を挟んで信号強度の検出を少なくとも２回繰り返す検出動作を、信号強度の検出を休止する検出休止時間を挟んで複数回繰り返すことによって、信号強度検出部の動作時間を更に短くし、信号強度検出部の電力消費を更に抑制することができる。しかも、検出休止時間は、１回目のデータの送信終了から２回目のデータの送信開始までの時間よりも長く、且つ、１回目のデータの送信開始から２回目のデータの送信終了までの時間よりも短くなるように設定されているので、１回目のデータの送信と２回目のデータの送信とのうちの少なくともいずれかにおいて信号強度の検出を行い、データの送信に対応した信号強度を検出することができる。そして、送信機は、１回の操作に対応して、データの送信を少なくとも３回繰り返すので、信号強度検出部が２回目のデータの送信終了までにデータの送信に対応した信号強度を検出した場合に、受信部が３回目のデータの送信開始よりも早くデータ受信機能を正常に作動させることができ、３回目以降のデータの送信において受信部がデータを確実に受信することができる。その結果、受信部がデータを受信する際の確実性を更に高めることができる。 In the transmission / reception system configured as described above, the signal strength detection unit repeats the detection operation that repeats the detection of the signal strength at least twice with the non-detection time interposed therebetween by repeating the detection operation a plurality of times with the detection pause time during which the detection of the signal strength is suspended. The operation time of the signal strength detection unit can be further shortened, and the power consumption of the signal strength detection unit can be further suppressed. Moreover, the detection pause time is longer than the time from the end of the first data transmission to the start of the second data transmission, and from the time from the start of the first data transmission to the end of the second data transmission. Is set to be shorter, the signal strength is detected in at least one of the first data transmission and the second data transmission, and the signal strength corresponding to the data transmission is detected. be able to. Since the transmitter repeats data transmission at least three times in response to one operation, the signal strength detection unit detects the signal strength corresponding to the data transmission by the end of the second data transmission. In this case, the reception unit can normally operate the data reception function earlier than the start of the third data transmission, and the reception unit can reliably receive the data in the third and subsequent data transmissions. As a result, it is possible to further improve the reliability when the receiving unit receives data.
　本発明によれば、受信機側の電力消費を抑制することができ、且つ、送信機からのデータの送信回数が少なくてもデータを確実に受信することができる送受信システムを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the transmission / reception system which can suppress the power consumption by the side of a receiver, and can receive data reliably even if the frequency | count of data transmission from a transmitter is small can be provided. .
本発明の第１実施形態に係る送受信システムの構成を示す説明図である。It is explanatory drawing which shows the structure of the transmission / reception system which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る送信機の構成を示す説明図である。It is explanatory drawing which shows the structure of the transmitting apparatus which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る受信機の構成を示す説明図である。It is explanatory drawing which shows the structure of the receiver which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係るデータの送受信のタイミングを示す説明図である。It is explanatory drawing which shows the timing of transmission / reception of the data which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係るデータの送受信の手順を示す説明図である。It is explanatory drawing which shows the procedure of transmission / reception of the data which concerns on 1st Embodiment of this invention. 本発明の第２実施形態に係る送受信システムの構成を示す説明図である。It is explanatory drawing which shows the structure of the transmission / reception system which concerns on 2nd Embodiment of this invention. 本発明の第２実施形態に係るデータの送受信のタイミングを示す説明図である。It is explanatory drawing which shows the timing of transmission / reception of the data which concerns on 2nd Embodiment of this invention. 従来の送受信システムに関する説明図である。It is explanatory drawing regarding the conventional transmission / reception system.
　［第１実施形態］
　以下、本発明の第１実施形態について図面を参照しながら説明する。まず、本発明の第１実施形態に係る送受信システムの構成について、図１ないし図３を用いて説明する。図１は、本発明の第１実施形態に係る送受信システムの構成を示す説明図であり、送受信システム１の全体構成を示すブロック図となっている。図２は、本発明の第１実施形態に係る送信機の構成を示す説明図である。図２（ａ）は、送信機１０の構成を示すブロック図であり、図２（ａ）は、送信機１０の外観を模式的に示す説明図である。図３は、本発明の第１実施形態に係る受信機の構成を示す説明図である。図３（ａ）は、受信機２０の構成を示すブロック図であり、図３（ｂ）は、受信部２２の構成を示すブロック図である。 [First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. First, the configuration of the transmission / reception system according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory diagram showing the configuration of the transmission / reception system according to the first embodiment of the present invention, and is a block diagram showing the overall configuration of the transmission / reception system 1. FIG. 2 is an explanatory diagram showing the configuration of the transmitter according to the first embodiment of the present invention. FIG. 2A is a block diagram illustrating the configuration of the transmitter 10, and FIG. 2A is an explanatory diagram schematically illustrating the appearance of the transmitter 10. FIG. 3 is an explanatory diagram showing the configuration of the receiver according to the first embodiment of the present invention. FIG. 3A is a block diagram illustrating the configuration of the receiver 20, and FIG. 3B is a block diagram illustrating the configuration of the receiving unit 22.
　本発明の第１実施形態に係る送受信システム１は、発電スイッチと呼ばれる発電機能とデータ送信機能とを有した送信機と、発電スイッチに対応した受信機とで構成される送受信システムである。このような送受信システム１は、例えば、電子機器を離れた位置から無線で操作するスイッチとして使用される。 The transmission / reception system 1 according to the first embodiment of the present invention is a transmission / reception system including a transmitter having a power generation function and a data transmission function called a power generation switch, and a receiver corresponding to the power generation switch. Such a transmission / reception system 1 is used, for example, as a switch for operating an electronic device wirelessly from a remote position.
　送受信システム１は、図１に示すように、送信機１０と受信機２０とを備えている。送信機１０は、発電スイッチと呼ばれる送信機である。送信機１０は、図２（ａ）に示すように、入力部１１と、振動発電部１２と、送信部１３と、送信アンテナ１４とを有している。 The transmission / reception system 1 includes a transmitter 10 and a receiver 20 as shown in FIG. The transmitter 10 is a transmitter called a power generation switch. As illustrated in FIG. 2A, the transmitter 10 includes an input unit 11, a vibration power generation unit 12, a transmission unit 13, and a transmission antenna 14.
　入力部１１は、図２（ｂ）に示すように、ケース部材１５に押圧可能に保持された操作部１１ａを有している。入力部１１は、操作者からの操作部１１ａを押圧する入力操作に対応して振動を発生させると共に、発生した振動を振動発電部１２に伝達している。 The input part 11 has the operation part 11a hold | maintained at the case member 15 so that pressing is possible, as shown in FIG.2 (b). The input unit 11 generates vibration in response to an input operation for pressing the operation unit 11 a from the operator, and transmits the generated vibration to the vibration power generation unit 12.
　振動発電部１２は、電磁誘導方式や圧電方式等の図示しない振動発電素子を有している。そして、振動発電部１２は、入力部１１から伝達された振動を利用して振動発電を行い、発電によって得られた電力を送信部１３に供給している。このような振動発電の原理は公知なので、詳細な説明は省略するが、通常、入力操作に伴う振動の発生時間は短いので、電力を発生させる時間も短くなる。 The vibration power generation unit 12 has a vibration power generation element (not shown) such as an electromagnetic induction method or a piezoelectric method. The vibration power generation unit 12 performs vibration power generation using the vibration transmitted from the input unit 11, and supplies power obtained by the power generation to the transmission unit 13. Since the principle of such vibration power generation is well known, detailed description is omitted, but normally, the generation time of the vibration accompanying the input operation is short, so the time for generating electric power is also short.
　送信部１３は、振動発電部１２から電力の供給を受けてデータ送信機能を起動し、入力操作に対応したデータを無線信号を用いて送信している。無線信号としては、ＵＨＦ帯（３００ＭＨｚ～３ＧＨz）の周波数帯域の電磁波信号が用いられる。そして、送信部１３は、無線信号となる電磁波信号にＦＳＫ等のデジタル変調を加えることによって、データを変調成分として含んだ無線信号を発生させ、発生した無線信号を送信アンテナ１４を介して送信している。以下、入力操作に対応したデータを変調成分として含んだ無線信号を送信することを、無線信号を用いてデータを送信すると略称する。 The transmission unit 13 receives a supply of power from the vibration power generation unit 12 to activate the data transmission function, and transmits data corresponding to the input operation using a radio signal. As the radio signal, an electromagnetic wave signal in the frequency band of the UHF band (300 MHz to 3 GHz) is used. Then, the transmission unit 13 generates a radio signal including data as a modulation component by applying digital modulation such as FSK to the electromagnetic wave signal to be a radio signal, and transmits the generated radio signal via the transmission antenna 14. ing. Hereinafter, transmitting a radio signal including data corresponding to an input operation as a modulation component is abbreviated as transmitting data using the radio signal.
　受信機２０は、発電スイッチに対応した受信機である。受信機２０は、図３（ａ）に示すように、受信アンテナ２１と、受信部２２と、信号強度検出部２３と、制御部２４とを有している。 The receiver 20 is a receiver corresponding to the power generation switch. As illustrated in FIG. 3A, the receiver 20 includes a reception antenna 21, a reception unit 22, a signal strength detection unit 23, and a control unit 24.
　受信部２２は、図３（ｂ）に示すように、高周波回路部２２ａと、検波部２２ｂと、信号処理部２２ｃとを有している。高周波回路部２２ａには、送信機１０から送信された無線信号が受信アンテナ２１を介して伝送される。そして、高周波回路部２２ａは、伝送された無線信号にノイズの除去や信号増幅等の処理を加えて検波前信号として出力している。検波部２２ｂは、検波前信号を検波して検波信号を出力している。信号処理部２２ｃは、検波信号を制御部２４が処理可能な信号に変換してデータとして出力している。信号処理部２２ｃが出力したデータは、制御部２４に伝達される。受信部２２は、このようにして、送信機１０から送信されたデータを受信している。 As shown in FIG. 3B, the reception unit 22 includes a high frequency circuit unit 22a, a detection unit 22b, and a signal processing unit 22c. A radio signal transmitted from the transmitter 10 is transmitted to the high frequency circuit unit 22a via the reception antenna 21. And the high frequency circuit part 22a adds the process of noise removal, signal amplification, etc. to the transmitted radio signal, and outputs it as a signal before a detection. The detector 22b detects the pre-detection signal and outputs a detection signal. The signal processing unit 22c converts the detection signal into a signal that can be processed by the control unit 24 and outputs the signal as data. The data output from the signal processing unit 22 c is transmitted to the control unit 24. The receiving unit 22 receives data transmitted from the transmitter 10 in this way.
　信号強度検出部２３には、送信機１０から送信された無線信号が受信アンテナ２１を介して伝送される。そして、信号強度検出部２３は、伝送された無線信号の信号強度を検出している。本実施形態では、信号強度検出部２３が検出する信号強度は、送信機１０から送信された無線信号である電磁波信号の受信電界強度（ＲＳＳI：Ｒｅｃｉｅｖｅｄ　Ｓｉｇｎａｌ　Ｉｎｄｉｃａｔｏｒ）である。信号強度検出部２３が検出した信号強度に関する情報は、制御部２４に伝達される。 The radio signal transmitted from the transmitter 10 is transmitted to the signal strength detection unit 23 via the reception antenna 21. And the signal strength detection part 23 has detected the signal strength of the transmitted radio signal. In the present embodiment, the signal strength detected by the signal strength detector 23 is a received electric field strength (RSSI: Received Signal Indicator) of an electromagnetic wave signal that is a radio signal transmitted from the transmitter 10. Information on the signal strength detected by the signal strength detection unit 23 is transmitted to the control unit 24.
　尚、このような信号強度の検出原理については公知なので、詳細な説明は省略するが、通常、信号強度を検出する際の信号処理は、データを受信する際の信号処理と比較して簡単なので、１回のデータの受信に要する時間と比較して、１回の信号強度の検出に要する時間を短くすることができる。 Since the detection principle of such signal strength is well known, detailed description is omitted, but normally, signal processing when detecting signal strength is simpler than signal processing when receiving data. Compared to the time required to receive one data, the time required to detect one signal intensity can be shortened.
　制御部２４は、受信部２２と信号強度検出部２３とを制御している。また、制御部２４は、受信部２２と信号強度検出部２３とをモニタし、受信部２２が受信したデータや信号強度検出部２３が検出した信号強度に関する情報を入手すると共に、入手したデータや情報に基づいて各種の判断を行っている。また、制御部２４は、図示しない電子機器と接続されており、受信部２２が受信したデータに対応した指示を電子機器に伝達して所定の動作を実行させている。送受信システム１は、このような構成となっている。 The control unit 24 controls the receiving unit 22 and the signal intensity detecting unit 23. In addition, the control unit 24 monitors the receiving unit 22 and the signal strength detecting unit 23 to obtain data received by the receiving unit 22 and information on the signal strength detected by the signal strength detecting unit 23, as well as the obtained data and Various decisions are made based on the information. The control unit 24 is connected to an electronic device (not shown), and transmits an instruction corresponding to the data received by the receiving unit 22 to the electronic device to execute a predetermined operation. The transmission / reception system 1 has such a configuration.
　次に、本実施形態に係る送受信システムの動作について、図４を用いて説明する。図４は、本発明の第１実施形態に係るデータの送受信のタイミングを示す説明図である。図４（ａ）は、送信機１０側の送信部１３によるデータの送信のタイミングを示すタイミングチャートである。図４（ｂ）は、受信機２０側の信号強度検出部２３による信号強度の検出のタイミングを示すタイミングチャートである。図４（ｃ）は、送信機１０側の受信部２２によるデータの受信のタイミングを示すタイミングチャートである。 Next, the operation of the transmission / reception system according to this embodiment will be described with reference to FIG. FIG. 4 is an explanatory diagram showing data transmission / reception timing according to the first embodiment of the present invention. FIG. 4A is a timing chart showing data transmission timing by the transmission unit 13 on the transmitter 10 side. FIG. 4B is a timing chart showing the timing of signal strength detection by the signal strength detector 23 on the receiver 20 side. FIG. 4C is a timing chart showing the timing of data reception by the receiving unit 22 on the transmitter 10 side.
　図４において、ｔａ１は、送信部１３がデータを送信する際の、１回のデータの送信におけるデータ送信時間である。ｔａ２は、送信部１３がデータを送信しない、データ送信時間ｔａ１とデータ送信時間ｔａ１との間の非送信時間である。また、Ｔ１は、１回目のデータの送信開始時間であり、Ｔ２は、１回目のデータの送信終了時間であり、Ｔ３は、２回目のデータの送信開始時間であり、Ｔ４は、２回目のデータの送信終了時間である。 In FIG. 4, ta1 is a data transmission time in one data transmission when the transmission unit 13 transmits data. ta2 is a non-transmission time between the data transmission time ta1 and the data transmission time ta1 at which the transmission unit 13 does not transmit data. T1 is the first data transmission start time, T2 is the first data transmission end time, T3 is the second data transmission start time, and T4 is the second data transmission start time. This is the data transmission end time.
　また、ｔｂ１は、信号強度検出部２３が信号強度を検出する際の、１回の信号強度の検出における検出時間である。ｔｂ２は、信号強度検出部２３が信号強度を検出しない、検出時間ｔｂ１と検出時間ｔｂ１との間の非検出時間である。また、ｔｃ１は、制御部２４がデータ受信機能の起動を指示してから受信部２２のデータ受信機能が正常に作動するまでの時間、すなわち、受信部２２がデータ受信機能を起動する際の起動時間である。ｔｃ２は、受信部２２のデータ受信機能が正常に作動してデータの受信が可能な状態となっている時間、すなわち、データ受信時間である。 Tb1 is a detection time in one detection of the signal strength when the signal strength detector 23 detects the signal strength. tb2 is a non-detection time between the detection time tb1 and the detection time tb1 when the signal strength detection unit 23 does not detect the signal strength. Tc1 is the time from when the control unit 24 instructs activation of the data reception function until the data reception function of the reception unit 22 operates normally, that is, activation when the reception unit 22 activates the data reception function. It's time. tc2 is a time during which the data reception function of the reception unit 22 operates normally and data can be received, that is, a data reception time.
　まず、送信機１０側の動作について説明する。送信機１０側では、前述したように、入力部１１が操作者からの入力操作を待ち受け、振動発電部１２が入力部１１に対する入力操作に対応して振動発電を行い、送信部１３が入力操作に対応したデータを受信機２０に送信している。送信部１３によるデータの送信は、図４（ａ）に示すように、１回の入力操作に対して、非送信時間ｔａ２を挟んでデータの送信を複数回繰り返す間欠動作となっている。そして、振動発電部１２が電力を発生させる時間は限定されるので、１回の入力操作に対して、送信部１３がデータを送信する際のデータの送信回数は数回程度に限定される。本実施形態では、送信部１３は、１回の入力操作に対して、データの送信を２回繰り返している。 First, the operation on the transmitter 10 side will be described. On the transmitter 10 side, as described above, the input unit 11 waits for an input operation from the operator, the vibration power generation unit 12 performs vibration power generation in response to the input operation to the input unit 11, and the transmission unit 13 performs the input operation. Is transmitted to the receiver 20. As shown in FIG. 4A, the data transmission by the transmission unit 13 is an intermittent operation in which data transmission is repeated a plurality of times with a non-transmission time ta2 being sandwiched in response to one input operation. And since the time which the vibration electric power generation part 12 generates electric power is limited, the transmission frequency of the data when the transmission part 13 transmits data with respect to one input operation is limited to about several times. In the present embodiment, the transmission unit 13 repeats data transmission twice for one input operation.
　次に、受信機２０側の動作について説明する。受信機２０側では、まず、信号強度検出部２３が、送信機１０から送信された無線信号の信号強度を検出している。信号強度検出部２３による信号強度の検出は、図４（ｂ）に示すように、信号強度非検出時間ｔｂ２を挟んで信号強度の検出を複数回繰り返す間欠動作となっている。 Next, the operation on the receiver 20 side will be described. On the receiver 20 side, first, the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10. As shown in FIG. 4B, the signal intensity detection by the signal intensity detection unit 23 is an intermittent operation in which the signal intensity detection is repeated a plurality of times with the signal intensity non-detection time tb2.
　通常、信号強度を検出する際の信号処理は、データを受信する際の信号処理と比較して簡単なので、信号強度検出部２３が信号強度を検出する際の検出時間ｔｂ１を、受信部２２がデータを受信する際のデータ受信時間ｔｃ２よりも短くすることができ、検出時間ｔｂ１が短くなっても、送信機１０からのデータの送信に対応した信号強度を検出することができるようになっている。 Normally, signal processing when detecting signal strength is simpler than signal processing when receiving data, and therefore the receiving unit 22 indicates the detection time tb1 when the signal strength detecting unit 23 detects the signal strength. It can be made shorter than the data reception time tc2 when receiving data, and even if the detection time tb1 is shortened, the signal strength corresponding to the data transmission from the transmitter 10 can be detected. Yes.
　また、本実施形態では、信号強度検出部２３が信号強度を検出しない非検出時間ｔｂ２は、送信部１３がデータを送信する際のデータ送信時間ｔａ１よりも短くなるように設定されており、１回のデータの送信において信号強度の検出を少なくとも１回行うことができるようになっている。 In the present embodiment, the non-detection time tb2 when the signal strength detection unit 23 does not detect the signal strength is set to be shorter than the data transmission time ta1 when the transmission unit 13 transmits data. The signal intensity can be detected at least once in each transmission of data.
　受信機２０側では、次に、制御部２４が、信号強度検出部２３の検出結果に基づいて、受信部２２にデータ受信機能を起動又は停止させている。そして、制御部２４は、入力操作に対応して送信機１０からのデータの送信が有った時には、受信部２２にデータ受信機能を起動してデータを受信させ、受信部２２が受信したデータに対応した指示を電子機器に伝達して所定の動作を実行させている。 Next, on the receiver 20 side, the control unit 24 activates or stops the data reception function in the reception unit 22 based on the detection result of the signal strength detection unit 23. Then, when there is data transmission from the transmitter 10 in response to the input operation, the control unit 24 activates the data reception function by the reception unit 22 to receive the data, and the data received by the reception unit 22 An instruction corresponding to the above is transmitted to the electronic device to execute a predetermined operation.
　尚、本実施形態では、制御部２４は、信号強度検出部２３が検出した信号強度が所定値未満であった場合に、受信部２２にデータ受信機能を停止させ、信号強度検出部２３が検出した信号強度が所定値以上であった場合に、受信部２２にデータ受信機能を起動させている。そして、データの送信が行われている時には、信号強度検出部２３が検出する信号強度は大きくなり、データの送信が行われていない時には、信号強度検出部２３が検出する信号強度は小さくなる。そのため、受信部２２によるデータの受信は、送信機１０からのデータの送信が有った時だけデータ受信機能を作動させる間欠動作となる。 In the present embodiment, the control unit 24 causes the reception unit 22 to stop the data reception function when the signal strength detected by the signal strength detection unit 23 is less than a predetermined value, and the signal strength detection unit 23 detects the signal strength. When the received signal strength is equal to or higher than a predetermined value, the data reception function is activated in the reception unit 22. When the data transmission is performed, the signal strength detected by the signal strength detection unit 23 increases. When the data transmission is not performed, the signal strength detected by the signal strength detection unit 23 decreases. Therefore, the reception of data by the receiving unit 22 is an intermittent operation that activates the data reception function only when there is data transmission from the transmitter 10.
　また、本実施形態では、受信部２２がデータ受信機能を起動する際の起動時間ｔｃ１は、送信部１３がデータを送信しない非送信時間ｔａ２よりも短くなるように設定されており、信号強度検出部２３が１回目のデータの送信終了時間Ｔ２までにデータの送信に対応した信号強度を検出した場合に、受信部２２が２回目のデータの送信開始時間Ｔ３よりも早くデータ受信機能を正常に作動させることができるようになっている。 In this embodiment, the activation time tc1 when the reception unit 22 activates the data reception function is set to be shorter than the non-transmission time ta2 when the transmission unit 13 does not transmit data, and signal strength detection is performed. When the unit 23 detects the signal strength corresponding to the data transmission by the first data transmission end time T2, the receiving unit 22 properly performs the data reception function earlier than the second data transmission start time T3. It can be activated.
　次に、送信機１０から受信機２０へのデータの送信手順について図５を用いて説明する。図５は、本発明の第１実施形態に係るデータの送受信の手順を示す説明図である。図５の左側のフローチャートは、送信機１０側のデータの送信時の動作手順を示し、図５の右側のフローチャートは、受信機２０側のデータの受信時の動作手順を示している。 Next, a data transmission procedure from the transmitter 10 to the receiver 20 will be described with reference to FIG. FIG. 5 is an explanatory diagram showing a data transmission / reception procedure according to the first embodiment of the present invention. The flowchart on the left side of FIG. 5 shows an operation procedure when transmitting data on the transmitter 10 side, and the flowchart on the right side of FIG. 5 shows an operation procedure when receiving data on the receiver 20 side.
　まず、送信機１０側のデータの送信時の動作手順について説明する。図５に示すように、ステップＳａ１では、入力部１１が、操作者からの入力操作を待ち受ける。次に、ステップＳａ２では、操作者からの入力操作の有無に基づいて、待ち受けを継続するか否かの選択が行われる。ステップＳａ２において、入力操作が無かった場合には、ステップＳａ１に戻り、入力部１１が入力操作の待ち受けを継続する。ステップＳａ２において、入力操作が有った場合には、ステップＳａ３に移動する。 First, the operation procedure when transmitting data on the transmitter 10 side will be described. As shown in FIG. 5, in step Sa1, the input unit 11 waits for an input operation from the operator. Next, in step Sa2, whether or not to continue waiting is selected based on the presence or absence of an input operation from the operator. If there is no input operation in step Sa2, the process returns to step Sa1 and the input unit 11 continues to wait for the input operation. If there is an input operation in step Sa2, the process moves to step Sa3.
　次に、ステップＳａ３では、振動発電部１２が、入力操作に対応して振動発電を行う。次に、ステップＳａ４では、送信部１３が、電力の供給を受けてデータ送信機能を起動する。次に、ステップＳａ５では、送信部１３が、入力操作に対応した１回目のデータの送信を行う。次に、ステップＳａ６では、送信部１３が、非送信時間ｔａ２を挟んで２回目のデータの送信を行う。そして、送信機１０側ではデータの送信が終了する。尚、その後、ステップＳａ１に戻り、データの送信を再び繰り返しても構わない。 Next, in step Sa3, the vibration power generation unit 12 performs vibration power generation in response to the input operation. Next, in step Sa4, the transmission unit 13 activates the data transmission function in response to the supply of power. Next, in step Sa5, the transmission unit 13 transmits the first data corresponding to the input operation. Next, in step Sa6, the transmission unit 13 transmits data for the second time with the non-transmission time ta2 interposed therebetween. Then, data transmission ends on the transmitter 10 side. After that, the process may return to step Sa1 to repeat the data transmission again.
　次に、受信機２０側のデータの受信時の動作手順について説明する。図４に示すように、ステップＳｂ１では、送信部１３が、データ受信機能を停止して待機する。そして、ステップＳｂ２では、信号強度検出部２３が、間欠動作によって送信機１０から送信された無線信号の信号強度を検出する。尚、ステップＳｂ２では、信号強度検出部２３は、ステップＳａ５における１回目のデータの送信に対応した信号強度を検出する。 Next, the operation procedure when receiving data on the receiver 20 side will be described. As shown in FIG. 4, in step Sb1, the transmission unit 13 stops the data reception function and stands by. In step Sb2, the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10 by the intermittent operation. In step Sb2, the signal strength detection unit 23 detects the signal strength corresponding to the first data transmission in step Sa5.
　次に、ステップＳｂ３では、制御部２４が、信号強度検出部２３が検出した信号強度の大きさに基づく判断を行う。ステップＳｂ３において、信号強度の大きさが所定値未満であった場合には、制御部２４が、送信機１０からのデータの送信が無かったと判断する。そして、ステップＳｂ２に戻り、信号強度検出部２３が信号強度の検出を継続する。ステップＳｂ３において、信号強度の大きさが所定値以上であった場合には、制御部２４が、送信機１０からのデータの送信が有ったと判断する。そして、ステップＳｂ４に移動する。 Next, in step Sb3, the control unit 24 makes a determination based on the magnitude of the signal strength detected by the signal strength detection unit 23. In step Sb3, when the magnitude of the signal strength is less than the predetermined value, the control unit 24 determines that no data is transmitted from the transmitter 10. Then, returning to step Sb2, the signal strength detection unit 23 continues to detect the signal strength. In step Sb3, when the magnitude of the signal strength is equal to or greater than a predetermined value, the control unit 24 determines that data has been transmitted from the transmitter 10. And it moves to step Sb4.
　次に、ステップＳｂ４では、制御部２４が受信機２０にデータ受信機能を起動させ、受信部２２がデータを受信可能な状態となる。次に、ステップＳｂ５では、受信部２２が、送信機１０から送信されたデータを受信する。尚、ステップＳｂ５では、受信部２２は、ステップＳａ６における２回目のデータの送信に対応したデータを受信する。次に、ステップＳｂ６では、制御部２４が、受信部２２が受信したデータに対応した指示を電子機器に伝達して所定の動作を実行させる。 Next, in step Sb4, the control unit 24 activates the data reception function in the receiver 20, and the reception unit 22 is ready to receive data. Next, in step Sb5, the receiving unit 22 receives data transmitted from the transmitter 10. In step Sb5, the receiving unit 22 receives data corresponding to the second data transmission in step Sa6. Next, in step Sb6, the control unit 24 transmits an instruction corresponding to the data received by the receiving unit 22 to the electronic device to execute a predetermined operation.
　次に、ステップＳｂ７では、制御部２４が、受信機２０にデータ受信機能を再び停止させる。そして、受信機２０側ではデータの受信が終了する。尚、その後、ステップＳｂ１に戻り、データ受信を再び繰り返しても構わない。送受信システム１では、このような手順に従って入力操作に対応したデータの送受信が行われる。 Next, in step Sb7, the control unit 24 causes the receiver 20 to stop the data reception function again. Then, the reception of data is completed on the receiver 20 side. After that, it is possible to return to step Sb1 and repeat data reception again. In the transmission / reception system 1, data corresponding to the input operation is transmitted / received according to such a procedure.
　次に、本実施形態の効果について説明する。本実施形態の送受信システム１では、非検出時間ｔａ２を挟んで信号強度の検出を繰り返すことによって信号強度検出部２３を間欠動作させることができる。そして、信号強度検出部２３が検出した信号強度に基づいて、制御部２４が受信部２２にデータ受信機能の起動及び停止を行わせることによって、受信部２２を間欠動作させることができる。そして、受信部２２と信号強度検出部２３とを間欠動作させることによって、受信機２０側の無駄な電力消費を抑制することができる。しかも、通常、信号強度を検出する際の信号処理は、データを受信する際の信号処理と比較して簡単なので、信号強度検出部２３を間欠動作させることによって信号強度の検出時間が短くなっても、送信機１０からのデータの送信に対応した信号強度を検出することができる。そして、信号強度検出部２３の検出結果に基づいて、受信部２２にデータ受信機能を起動又は停止させることによって、送信機１０からのデータの送信回数が少なくても、受信部２２が送信機１０からのデータを確実に受信することができるようになる。 Next, the effect of this embodiment will be described. In the transmission / reception system 1 of the present embodiment, the signal strength detection unit 23 can be intermittently operated by repeating the detection of the signal strength across the non-detection time ta2. Then, based on the signal strength detected by the signal strength detection unit 23, the control unit 24 causes the reception unit 22 to start and stop the data reception function, whereby the reception unit 22 can be intermittently operated. And the wasteful power consumption by the side of the receiver 20 can be suppressed by operating the receiving part 22 and the signal strength detection part 23 intermittently. Moreover, signal processing for detecting signal strength is usually simpler than signal processing for receiving data, so that the signal strength detection unit 23 is intermittently operated to shorten the signal strength detection time. In addition, the signal strength corresponding to the transmission of data from the transmitter 10 can be detected. Then, based on the detection result of the signal strength detection unit 23, the reception unit 22 activates or stops the data reception function so that the reception unit 22 can transmit the data to the transmitter 10 even if the number of data transmissions from the transmitter 10 is small. The data from can be received reliably.
　また、本実施形態の送受信システム１では、非検出時間ｔｂ２がデータ送信時間ｔａ１よりも短くなるように設定されているので、１回のデータの送信において信号強度の検出を少なくとも１回行うことができる。その結果、信号強度の検出の確実性を高めることができる。また、データ受信機能の起動時間ｔｃ１が非送信時間ｔａ２よりも短くなるように設定されているので、信号強度検出部２３が１回目のデータの送信終了時間Ｔ２までにデータの送信に対応した信号強度を検出した場合に、受信部２２が２回目のデータの送信開始時間Ｔ３よりも早くデータ受信機能を正常に作動させることができ、２回目以降のデータの送信において受信部２２がデータを確実に受信することができる。その結果、受信部２２がデータを受信する際の確実性を更に高めることができる。 Further, in the transmission / reception system 1 of the present embodiment, the non-detection time tb2 is set to be shorter than the data transmission time ta1, so that the signal strength can be detected at least once in one data transmission. it can. As a result, the certainty of signal intensity detection can be increased. Further, since the start time tc1 of the data reception function is set to be shorter than the non-transmission time ta2, the signal strength detection unit 23 is a signal corresponding to data transmission by the first data transmission end time T2. When the intensity is detected, the receiving unit 22 can normally operate the data receiving function earlier than the second data transmission start time T3, and the receiving unit 22 ensures the data transmission in the second and subsequent data transmissions. Can be received. As a result, it is possible to further improve the reliability when the receiving unit 22 receives data.
　また、本実施形態の送受信システム１では、データの送信が行われている時には、信号強度検出部２３が検出する信号強度は大きくなり、データの送信が行われていない時には、信号強度検出部２３が検出する信号強度は小さくなる。そのため、制御部２４が、信号強度検出部２３が検出した信号強度が所定値未満であった場合に、受信部２２にデータ受信機能を停止させ、信号強度検出部２３が検出した信号強度が所定値以上であった場合に、受信部２２にデータ受信機能を起動させることによって、送信機１０からのデータの送信に対応して受信部２２のデータ受信機能を適切に作動させることができ、受信部２２がデータを受信する際の確実性を更に高めることができる。 In the transmission / reception system 1 of the present embodiment, the signal strength detected by the signal strength detection unit 23 increases when data transmission is performed, and the signal strength detection unit 23 when data transmission is not performed. The signal intensity detected by becomes smaller. Therefore, when the signal strength detected by the signal strength detection unit 23 is less than a predetermined value, the control unit 24 causes the reception unit 22 to stop the data reception function, and the signal strength detected by the signal strength detection unit 23 is predetermined. When the value is equal to or greater than the value, the data reception function of the reception unit 22 can be appropriately activated in response to the transmission of data from the transmitter 10 by activating the data reception function of the reception unit 22 and receiving. It is possible to further improve the certainty when the unit 22 receives data.
　また、本実施形態の送受信システム１では、送信機１０から送信される無線信号は、ＵＨＦ帯の周波数帯域の電磁波信号である。そして、このような電磁波信号にＦＳＫ等のデジタル変調を加えることによって、より多くの情報を含むデータを高速で送信することができるようになる。また、送信機１０から送信される無線信号がこのような電磁波信号である場合、電磁波信号の受信電界強度を検出することによって、信号強度の検出を容易に行うことができる。 Further, in the transmission / reception system 1 of the present embodiment, the radio signal transmitted from the transmitter 10 is an electromagnetic wave signal in the frequency band of the UHF band. Then, by adding digital modulation such as FSK to such an electromagnetic wave signal, data including more information can be transmitted at high speed. Further, when the radio signal transmitted from the transmitter 10 is such an electromagnetic wave signal, the signal intensity can be easily detected by detecting the received electric field intensity of the electromagnetic wave signal.
　［第２実施形態］
　以下、本発明の第２実施形態について図面を参照しながら説明する。尚、本実施形態において、前述した第１実施形態と同一の構成である場合、同一符号を付して詳細な説明は省略する。 [Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. In addition, in this embodiment, when it is the same structure as 1st Embodiment mentioned above, the same code | symbol is attached | subjected and detailed description is abbreviate | omitted.
　まず、本発明の第２実施形態に係る送受信システムの構成について、図６を用いて説明する。図６は、本発明の第２実施形態に係る送受信システムの構成を示す説明図（ブロック図）である。 First, the configuration of a transmission / reception system according to the second embodiment of the present invention will be described with reference to FIG. FIG. 6 is an explanatory diagram (block diagram) showing a configuration of a transmission / reception system according to the second embodiment of the present invention.
　本発明の第２実施形態に係る送受信システム１０１は、図６に示すように、送信機１０と受信機２０とを備えている。送信機１０は、送信機１０は、入力部１１と、振動発電部１２と、送信部１３と、送信アンテナ１４とを有している。受信機２０は、受信アンテナ２１と、受信部２２と、信号強度検出部２３と、制御部２４とを有している。このように、送受信システム１０１の構成は、第１実施形態に係る送受信システム１の構成と同じである。但し、本実施形態では、データ送受信時の送受信システム１０１の動作が送受信システム１の動作と異なる。 The transmission / reception system 101 according to the second embodiment of the present invention includes a transmitter 10 and a receiver 20, as shown in FIG. The transmitter 10 includes an input unit 11, a vibration power generation unit 12, a transmission unit 13, and a transmission antenna 14. The receiver 20 includes a reception antenna 21, a reception unit 22, a signal strength detection unit 23, and a control unit 24. Thus, the configuration of the transmission / reception system 101 is the same as the configuration of the transmission / reception system 1 according to the first embodiment. However, in the present embodiment, the operation of the transmission / reception system 101 at the time of data transmission / reception is different from the operation of the transmission / reception system 1.
　次に、本実施形態に係る送受信システムの動作について、図７を用いて説明する。図７は、本発明の第２実施形態に係るデータの送受信のタイミングを示すタイミングチャートである。図７（ａ）は、送信機１０側の送信部１３によるデータの送信のタイミングを示している。図７（ｂ）は、受信機２０側の信号強度検出部２３による信号強度の検出のタイミングを示している。図７（ｃ）は、送信機１０側の受信部２２によるデータの受信のタイミングを示している。図７（ａ）において、Ｔ５は、３回目のデータの送信開始時間であり、Ｔ６は、３回目のデータの送信終了時間である。図７（ｂ）において、ｔｂ３は、信号強度検出部２３が信号強度の検出を休止する検出休止時間である。 Next, the operation of the transmission / reception system according to this embodiment will be described with reference to FIG. FIG. 7 is a timing chart showing data transmission / reception timing according to the second embodiment of the present invention. FIG. 7A shows the timing of data transmission by the transmitter 13 on the transmitter 10 side. FIG. 7B shows the timing of signal strength detection by the signal strength detector 23 on the receiver 20 side. FIG. 7C shows the timing of data reception by the receiving unit 22 on the transmitter 10 side. In FIG. 7A, T5 is the third data transmission start time, and T6 is the third data transmission end time. In FIG. 7B, tb3 is a detection pause time during which the signal strength detection unit 23 pauses signal strength detection.
　まず、送信機１０側の動作について説明する。送信機１０側では、第１実施形態と同様に、入力部１１に対する入力操作に対応して、振動発電部１２が振動発電を行い、送信部１３が入力操作に対応したデータを受信機２０に送信している。但し、本実施形態では、送信部１３は、図７（ａ）に示すように、１回の入力操作に対して、データの送信を３回繰り返している。 First, the operation on the transmitter 10 side will be described. On the transmitter 10 side, as in the first embodiment, the vibration power generation unit 12 performs vibration power generation in response to an input operation on the input unit 11, and the transmission unit 13 sends data corresponding to the input operation to the receiver 20. Sending. However, in the present embodiment, the transmission unit 13 repeats data transmission three times for one input operation, as shown in FIG.
　次に、受信機２０側の動作について説明する。受信機２０側では、第１実施形態と同様に、信号強度検出部２３が、送信機１０から送信された無線信号の信号強度を検出し、入力操作に対応して送信機１０からのデータの送信が有った時には、制御部２４が受信部２２のデータ受信機能を起動させて、受信部２２がデータを受信している。 Next, the operation on the receiver 20 side will be described. On the receiver 20 side, as in the first embodiment, the signal strength detection unit 23 detects the signal strength of the radio signal transmitted from the transmitter 10, and in response to the input operation, the signal strength of the data from the transmitter 10 is detected. When there is a transmission, the control unit 24 activates the data reception function of the reception unit 22, and the reception unit 22 receives the data.
　但し、本実施形態では、信号強度検出部２３は、図７（ｂ）に示すように、非検出時間ｔｂ２を挟んで信号強度の検出を２回繰り返す検出動作を、信号強度の検出を休止する検出休止時間ｔｂ３を挟んで複数回繰り返している。そして、信号強度検出部２３がこのような間欠動作を行うことによって、第１実施形態と比較して、信号強度検出部２３の動作時間を更に短くしている。しかも、検出休止時間ｔｂ３は、検出休止時間ｔｂ３は、１回目のデータの送信終了時間Ｔ２から２回目のデータの送信開始時間Ｔ３までの時間よりも長く、且つ、１回目のデータの送信開始時間Ｔ１から２回目のデータの送信終了時間Ｔ４までの時間よりも短くなるように設定されており、１回目のデータの送信と２回目のデータの送信とのうちの少なくともいずれかにおいて信号強度の検出を行うことができるようになっている。 However, in this embodiment, as shown in FIG. 7B, the signal strength detection unit 23 pauses the signal strength detection in the detection operation in which the signal strength detection is repeated twice with the non-detection time tb2 interposed therebetween. The detection pause time tb3 is repeated several times. The signal intensity detection unit 23 performs such an intermittent operation, so that the operation time of the signal intensity detection unit 23 is further shortened as compared with the first embodiment. In addition, the detection pause time tb3 is longer than the time from the first data transmission end time T2 to the second data transmission start time T3, and the first data transmission start time. It is set to be shorter than the time from T1 to the second data transmission end time T4, and the signal strength is detected in at least one of the first data transmission and the second data transmission. Can be done.
　また、本実施形態では、送信部１３は、前述したように、１回の入力操作に対してデータの送信を３回繰り返しており、データ受信機能の起動時間ｔｃ１は、第１実施形態と同様に、非送信時間ｔａ２よりも短くなるように設定されている。そして、１回の入力操作に対するデータの送信回数をこのように３回とすることによって、１回目又は２回目のデータの送信においてデータの送信に対応した信号強度を、２回目のデータの送信終了時間Ｔ４までに検出した場合、３回目のデータの送信開始時間Ｔ５の前に受信部２２のデータ受信機能を作動させることができるようになっている。 In the present embodiment, as described above, the transmission unit 13 repeats data transmission three times for one input operation, and the data reception function activation time tc1 is the same as in the first embodiment. In addition, it is set to be shorter than the non-transmission time ta2. By setting the number of data transmissions for one input operation to three in this way, the signal intensity corresponding to the data transmission in the first or second data transmission is completed. When detected by time T4, the data reception function of the receiving unit 22 can be activated before the third data transmission start time T5.
　次に、本実施形態の効果について説明する。尚、本実施形態では、第１実施形態と異なる効果についてのみ説明する。本実施形態の送受信システム１０１では、信号強度検出部２３は、非検出時間ｔｂ２を挟んで信号強度の検出を２回繰り返す検出動作を、信号強度の検出を休止する検出休止時間ｔｂ３を挟んで複数回繰り返すことによって、信号強度検出部２３の動作時間を更に短くし、信号強度検出部２３の電力消費を更に抑制することができる。しかも、検出休止時間ｔｂ３は、１回目のデータの送信終了時間Ｔ２から２回目のデータの送信開始時間Ｔ３までの時間よりも長く、且つ、１回目のデータの送信開始時間Ｔ１から２回目のデータの送信終了時間Ｔ４までの時間よりも短くなるように設定されているので、１回目のデータの送信と２回目のデータの送信とのうちの少なくともいずれかにおいて信号強度の検出を行い、データの送信に対応した信号強度を検出することができる。そして、送信機１０の送信部１３は、１回の操作に対応して、データの送信を少なくとも３回繰り返すので、信号強度検出部２３が２回目のデータの送信終了時間Ｔ４までにデータの送信に対応した信号強度を検出した場合に、受信部２２が３回目のデータの送信開始時間Ｔ５よりも早くデータ受信機能を正常に作動させることができ、３回目以降のデータの送信において受信部２２がデータを確実に受信することができる。その結果、受信部２２がデータを受信する際の確実性を更に高めることができる。 Next, the effect of this embodiment will be described. In the present embodiment, only effects different from those of the first embodiment will be described. In the transmission / reception system 101 of the present embodiment, the signal strength detection unit 23 performs a plurality of detection operations that repeat the detection of the signal strength twice with the non-detection time tb2 in between, with the detection pause time tb3 in which the detection of the signal strength is paused. By repeating the operation once, the operation time of the signal strength detection unit 23 can be further shortened, and the power consumption of the signal strength detection unit 23 can be further suppressed. Moreover, the detection pause time tb3 is longer than the time from the transmission end time T2 of the first data to the transmission start time T3 of the second data, and the second data from the transmission start time T1 of the first data. Therefore, the signal strength is detected in at least one of the first data transmission and the second data transmission. The signal strength corresponding to the transmission can be detected. Since the transmission unit 13 of the transmitter 10 repeats data transmission at least three times in response to one operation, the signal strength detection unit 23 transmits the data before the second data transmission end time T4. When the signal strength corresponding to is detected, the reception unit 22 can normally operate the data reception function earlier than the transmission start time T5 of the third data, and the reception unit 22 in the third and subsequent data transmissions. Can reliably receive the data. As a result, it is possible to further improve the reliability when the receiving unit 22 receives data.
　以上、本発明の実施形態について説明してきたが、本発明は上記の実施形態に限定されず、本発明の目的の範囲を逸脱しない限りにおいて適宜変更することができる。 As mentioned above, although the embodiment of the present invention has been described, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the object of the present invention.
　例えば、本発明の実施形態において、送信機１０は、発電スイッチでは無く、電池等の電力供給手段を有した送信機であっても構わない。送信機１０がこのような送信機であっても、電力消費を抑制するためにデータの送信回数を限定するような場合には、本実施形態と同様の効果を得ることができる。 For example, in the embodiment of the present invention, the transmitter 10 may be a transmitter having power supply means such as a battery instead of the power generation switch. Even if the transmitter 10 is such a transmitter, the same effect as that of the present embodiment can be obtained when the number of data transmissions is limited in order to suppress power consumption.
　また、本発明の実施形態において、システムの規格等に合わせて送信機１０側や受信機２０側の構成を適宜変更しても構わない。例えば、送信機１０は、振動発電によって得られた電力を蓄えるための蓄電部や、所定の時間にデータの送信を行うためのタイマー等を更に有していても構わない。また、受信機２０側では、受信部２２と信号強度検出部２３とが１つの集積回路に一体的に形成されていても構わない。 Further, in the embodiment of the present invention, the configuration on the transmitter 10 side or the receiver 20 side may be appropriately changed according to the system standard or the like. For example, the transmitter 10 may further include a power storage unit for storing electric power obtained by vibration power generation, a timer for transmitting data at a predetermined time, and the like. On the receiver 20 side, the receiving unit 22 and the signal strength detecting unit 23 may be integrally formed in one integrated circuit.
　また、所定のデータの送受信が可能ならば、本発明の第１実施形態において、送信部１３は、１回の入力操作に対して、データの送信を３回以上繰り返しても構わない。また、本発明の第２実施形態において、送信部１３は、１回の入力操作に対して、データの送信を４回以上繰り返しても構わない。また、本発明の第２実施形態において、信号強度検出部２３は、１回の検出動作において信号強度の検出を３回以上繰り返しても構わない。 Further, if transmission / reception of predetermined data is possible, in the first embodiment of the present invention, the transmission unit 13 may repeat data transmission three or more times for one input operation. In the second embodiment of the present invention, the transmission unit 13 may repeat data transmission four or more times for one input operation. In the second embodiment of the present invention, the signal strength detection unit 23 may repeat the detection of the signal strength three times or more in one detection operation.
　また、所定のデータの送受信が可能ならば、本発明の実施形態において、データの送信で用いられる無線信号は、ＵＨＦ帯以外の周波数帯域の電磁波信号であっても構わない。そして、無線信号に加えられる変調はＦＳＫ変調以外の方式の変調であっても構わない。また、データの送信で用いられる無線信号は、赤外線や超音波等の電磁波信号以外の無線信号であっても構わない。 In addition, as long as predetermined data can be transmitted and received, in the embodiment of the present invention, the radio signal used for data transmission may be an electromagnetic wave signal in a frequency band other than the UHF band. The modulation applied to the radio signal may be a modulation other than FSK modulation. The wireless signal used for data transmission may be a wireless signal other than an electromagnetic wave signal such as an infrared ray or an ultrasonic wave.
　１、１０１　送受信システム
　１０　送信機
　１１　入力部
　１１ａ　操作部
　１２　振動発電部
　１３　送信部
　１４　送信アンテナ
　１５　ケース部材
　２０　受信機
　２１　受信アンテナ
　２２　受信部
　２３　信号強度検出部
　２４　制御部
 

  DESCRIPTION OF SYMBOLS 1,101 Transmission / reception system 10 Transmitter 11 Input part 11a Operation part 12 Vibration power generation part 13 Transmission part 14 Transmission antenna 15 Case member 20 Receiver 21 Reception antenna 22 Reception part 23 Signal strength detection part 24 Control part

Claims (5)

  1. 　無線信号を用いてデータを送信する送信機と、
    　前記データを受信する受信部と、前記無線信号の信号強度を検出する信号強度検出部と、前記受信部及び前記信号強度検出部を制御する制御部とを有する受信機と、
    　を備えた送受信システムにおいて、
    　前記送信機は、
    　前記データを送信しない非送信時間を挟んで前記データの送信を複数回数繰り返し、
    　前記信号強度検出部は、
    　前記信号強度を検出しない非検出時間を挟んで前記信号強度の検出を複数回繰り返し、
    　前記制御部は、
    　前記信号強度検出部の検出結果に基づいて、前記受信部に前記データを受信するためのデータ受信機能を起動又は停止させることを特徴とする送受信システム。     A transmitter for transmitting data using a radio signal;
    A receiver having a receiving unit for receiving the data, a signal strength detecting unit for detecting a signal strength of the radio signal, and a control unit for controlling the receiving unit and the signal strength detecting unit;
    In a transmission / reception system equipped with
    The transmitter is
    Repeating the transmission of the data a plurality of times with a non-transmission time not transmitting the data,
    The signal intensity detector is
    The detection of the signal intensity is repeated a plurality of times with a non-detection time in which the signal intensity is not detected,
    The controller is
    A transmission / reception system characterized in that, based on a detection result of the signal strength detection unit, the reception unit activates or stops a data reception function for receiving the data.
  2. 　前記非検出時間は、
    　前記送信機が前記データを送信する際のデータ送信時間よりも短くなるように設定され、
    　前記受信部が前記データ受信機能を起動する際の起動時間は、
    　前記非送信時間よりも短くなるように設定されていることを特徴とする請求項１に記載の送受信システム。     The non-detection time is
    The transmitter is set to be shorter than the data transmission time when transmitting the data,
    The activation time when the reception unit activates the data reception function is:
    The transmission / reception system according to claim 1, wherein the transmission / reception system is set to be shorter than the non-transmission time.
  3. 　前記制御部は、
    　前記信号強度検出部が検出した前記信号強度が所定値未満であった場合に、前記受信部に前記データ受信機能を停止させ、
    　前記信号強度検出部が検出した前記信号強度が所定値以上であった場合に、前記受信部に前記データ受信機能を起動させることを特徴とする請求項１又は請求項２に記載の送受信システム。     The controller is
    When the signal strength detected by the signal strength detection unit is less than a predetermined value, the reception unit stops the data reception function,
    The transmission / reception system according to claim 1 or 2, wherein when the signal strength detected by the signal strength detection unit is equal to or greater than a predetermined value, the data reception function is activated by the reception unit.
  4. 　前記無線信号は、
    　所定の周波数帯域の電磁波信号であり、
    　前記信号強度は、
    　前記電磁波信号の受信電界強度であることを特徴とする請求項１ないし請求項３のいずれかに記載の送受信システム。     The radio signal is
    An electromagnetic wave signal of a predetermined frequency band,
    The signal strength is
    The transmission / reception system according to any one of claims 1 to 3, wherein the reception electric field intensity of the electromagnetic wave signal is used.
  5. 　前記送信機は、
    　１回の操作に対応して、前記データの送信を少なくとも３回繰り返し、
    　前記信号強度検出部は、
    　前記非検出時間を挟んで前記信号強度の検出を少なくとも２回繰り返す検出動作を、前記信号強度の検出を休止する検出休止時間を挟んで複数回繰り返し、
    　前記検出休止時間は、
    　１回目の前記データの送信終了から２回目の前記データの送信開始までの時間よりも長く、且つ、１回目の前記データの送信開始から２回目の前記データの送信終了までの時間よりも短くなるように設定されていることを特徴とする請求項１ないし請求項４のいずれかに記載の送受信システム。
     
                                                                                         The transmitter is
    In response to one operation, the transmission of the data is repeated at least three times,
    The signal intensity detector is
    A detection operation in which the detection of the signal intensity is repeated at least twice with the non-detection time in between is repeated a plurality of times with a detection pause time in which the detection of the signal intensity is paused,
    The detection pause time is
    It is longer than the time from the end of the first transmission of the data to the start of the second transmission of the data, and shorter than the time from the start of the first transmission of the data to the end of the second transmission of the data. The transmission / reception system according to any one of claims 1 to 4, wherein the transmission / reception system is set as follows.

PCT/JP2015/078637 2014-10-22 2015-10-08 Transmission/reception system WO2016063741A1 (en)

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WO2005013637A1 (en) * 2003-07-30 2005-02-10 Nec Corporation Radio transmitting/receiving apparatus and intermittent transmitting/receiving control method of radio transmitting/receiving apparatus
JP2007235308A (en) * 2006-02-28 2007-09-13 Matsushita Electric Ind Co Ltd Radio apparatus and program

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JP2007235308A (en) * 2006-02-28 2007-09-13 Matsushita Electric Ind Co Ltd Radio apparatus and program

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019116763A1 (en) 2017-12-15 2019-06-20 パナソニックＩｐマネジメント株式会社 Communication system, transmission device, reception device, and communication method
US11139848B2 (en) 2017-12-15 2021-10-05 Nuvoton Technology Corporation Japan Communication system, transmission device, reception device, and communication method

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