WO2014155822A1 - Detection system and automatic transaction device - Google Patents

Detection system and automatic transaction device Download PDF

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Publication number
WO2014155822A1
WO2014155822A1 PCT/JP2013/081207 JP2013081207W WO2014155822A1 WO 2014155822 A1 WO2014155822 A1 WO 2014155822A1 JP 2013081207 W JP2013081207 W JP 2013081207W WO 2014155822 A1 WO2014155822 A1 WO 2014155822A1
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WO
WIPO (PCT)
Prior art keywords
light
wireless device
unit
light receiving
light emitting
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PCT/JP2013/081207
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French (fr)
Japanese (ja)
Inventor
典恭 菊池
清水　聡
浩伸 畑本
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沖電気工業株式会社
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Publication of WO2014155822A1 publication Critical patent/WO2014155822A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/22—Payment schemes or models
    • G06Q20/223—Payment schemes or models based on the use of peer-to-peer networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
    • G06Q20/32—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using wireless devices
    • G06Q20/327—Short range or proximity payments by means of M-devices

Definitions

  • the present invention relates to a detection system and an automatic transaction apparatus, and more particularly to a detection system and an automatic transaction apparatus in which a pair of detection apparatuses arranged so that a light emitting unit and a light receiving unit face each other are communicably connected.
  • both the light emitting element and the light receiving element are provided on the same surface, and the light emitted from the light emitting element is reflected by the prism and the light receiving element is received.
  • the light emitting unit and the light receiving unit are arranged in pairs so that the light receiving unit receives the light from the light emitting unit. Each unit performs wireless communication with a control board (access point) of the automatic transaction apparatus.
  • the detection system described in Japanese Patent Application Laid-Open No. 2012-118791 in which the light emitting unit (light emitting side device) and the light receiving unit (light receiving side device) are arranged in pairs includes a secondary battery and a charging circuit. Yes.
  • the light emitting unit consumes more power when it continues to emit light than it receives light. Therefore, in the light emitting side device and the light receiving side device, there is a problem that the light emitting side device consumes the primary battery earlier than the light receiving side device, and only the battery of the light emitting side device is replaced more frequently. Therefore, in the detection system described in Japanese Patent Application Laid-Open No. 2012-118791, the light emitting side device and the light receiving side device are each mounted with a secondary battery and a charging circuit. However, there is a problem that the apparatus is enlarged by mounting the secondary battery and the charging circuit.
  • the conventional technique has a problem that the light receiving side apparatus cannot receive light and an error occurs due to an obstacle such as dust on the optical path from the light emitting side apparatus to the light receiving side apparatus.
  • the communication quality of radio waves in wireless communication is affected by interference of radio waves generated in the vicinity. Therefore, when any device using the same frequency band approaches, there is a problem that communication quality temporarily deteriorates and an error occurs as a radio interference.
  • an object of the present invention is to provide a highly reliable detection system and automatic transaction apparatus capable of continuous operation.
  • two detection devices each including a light emitting unit and a light receiving unit are disposed so that the light emitting unit and the light receiving unit face each other, and the pair A detection system in which the detection devices are connected so as to be capable of wireless communication, wherein the pair of detection devices perform the wireless communication, the light emitting unit functions and the light receiving unit stops functioning; and The light-receiving unit functions and the light-emitting unit stops functioning alternately, and one is driven as the light-emitting device and the other is driven as the light-receiving device.
  • a pair of detection devices are provided, and one can be switched so that one is a light-emitting device and the other is a light-receiving device. can do.
  • the light emitting side device can be switched to the light receiving side device, and the light receiving side device with low power consumption can be switched to the light emitting side device.
  • the light emitting device consumes more power than the light receiving device. According to the present invention, since switching is performed, power consumption can be reduced. For example, although the battery replacement is performed only for the light emitting side device that consumes a large amount of power, the light emitting side device becomes the light receiving side device by switching, so that the power consumption is reduced and the frequency of battery replacement is reduced.
  • 1 is an overall configuration diagram of a detection system according to a first embodiment. It is a block diagram of the radio
  • the present embodiment an embodiment of the present invention (hereinafter referred to as “the present embodiment”) will be described in detail with reference to the drawings.
  • Each figure is only schematically showing the present invention. Therefore, the present invention is not limited to the illustrated example.
  • symbol is attached
  • FIG. 1 is a configuration diagram of a detection system according to the present embodiment.
  • the detection system 200 includes a pair (a pair) of wireless devices 201 (201A and 201B) (detection devices with wireless functions), an access point 103 (wireless communication relay device), and an external device 104. Each of the wireless devices 201 and the external device 104 are connected via the access point 103 so that wireless communication is possible.
  • This detection system 200 may include a plurality of sets of a set of wireless devices 201.
  • NW wireless network NW
  • NW 1 inter-sensor wireless network
  • NW 2 inter-external wireless network
  • NW1 and NW2 are computer networks that are interconnected using the Internet Protocol technology via, for example, a wireless local area network (LAN), ZigBee (registered trademark), Bluetooth (registered trademark), or the like. is there.
  • LAN wireless local area network
  • ZigBee registered trademark
  • Bluetooth registered trademark
  • the wireless network between the access point 103 and the external device 104 in the NW 2 may be wired, for example, a wired LAN or WAN (Wide Area Network).
  • the wireless device 201 when the wireless device 201 transmits a packet to the external device 104, the wireless device 201 once transmits a packet to the access point 103, and the access point 103 is the external device. Send to 104. That is, the access point 103 (wireless communication relay device) serves as a network relay device. Conversely, when the external device 104 transmits a packet (for example, a light emission / extinction instruction) to the wireless device 201, the external device 104 once transmits the packet to the access point 103, and the access point 103 is the main wireless device. Transmit to the wireless device 201 (which functions as a light receiving side wireless device).
  • a packet for example, a light emission / extinction instruction
  • the wireless device 201A and the wireless device 201B which are a set of wireless devices 201, are wireless devices having the same configuration, and each include a light receiving sensor unit 202 and a light emitting sensor unit 203, and the light emitting sensor unit 203 of one wireless device emits light.
  • the light receiving sensor unit 202 of the other wireless device receives the received light.
  • the wireless device 201A and the wireless device 201B are arranged so as to face each other. Details of the configuration of the wireless device 201 will be described later.
  • the functions of the pair of the wireless device 201A and the wireless device 201B are switched so that one of them is a wireless device dedicated to light emission and the other is a wireless device dedicated to light reception.
  • a radio device dedicated to light emission is referred to as a “light emitting side radio”
  • a radio device dedicated to light reception is referred to as a “light receiving side radio”.
  • the wireless device 201 (201A, 201B) emits light in response to a light emission instruction from the external device 104, and turns off in response to a turn-off instruction.
  • the access point 103 is a relay device that connects each wireless device 201 and the external device 104 so that wireless communication is possible. Details will be described in a second embodiment to be described later.
  • the external device 104 is a computer that performs wireless communication with the wireless device 201 (201 ⁇ / b> A, 201 ⁇ / b> B) via the access point 103.
  • the external device 104 transmits a light emission / extinction instruction to the wireless device 201 and receives the reception of light from the wireless device 201. Thereby, the external device 104 can confirm that the light is blocked between the wireless device 201A and the wireless device 201B.
  • FIG. 2 is a configuration diagram of the radio apparatus according to the first embodiment.
  • FIG. 2 is a configuration diagram of the wireless device 201A, the wireless device 201A and the wireless device 201B, which are a set of wireless devices 201, are wireless devices having the same configuration.
  • the wireless device 201A performs wireless communication with the opposite wireless device 201B, and switches functions so as to be a light emitting side wireless device or a light receiving side wireless device.
  • the wireless device 201A includes a light reception sensor unit 202, a light emission sensor unit 203, a wireless unit 204, a light reception switch unit 205, a light emission switch unit 206, a battery 207, and a control unit 208 having a battery remaining amount determination function.
  • the battery remaining amount detecting unit 209 and the timer 210 are provided.
  • a wireless device 201B (not shown). That is, light emitted from the light emitting sensor unit 203 of the wireless device 201A is received by the light receiving sensor unit 202 of the wireless device 201B. On the other hand, light emitted from the light emitting sensor unit 203 of the wireless device 201B is received by the light receiving sensor unit 202 of the wireless device 201A.
  • the light receiving sensor unit 202 is a component that receives light emitted from the light emitting sensor unit 203 of the opposing wireless device 201B and outputs a signal to the wireless unit 204 that the light is received, and is configured by a phototransistor, for example.
  • the light receiving sensor unit 202 performs light reception and signal output operations with power supplied from the battery 207 via the light receiving switch unit 205. For this reason, when the light receiving switch unit 205 is off, no power is supplied, so that it does not operate.
  • the light emission sensor unit 203 is a component that emits light, and is formed of, for example, a light emitting diode.
  • the light emitted from the light emitting sensor unit 203 is received by the light receiving sensor unit 202 of the opposing wireless device 201B.
  • the light emission sensor unit 203 performs a light emission operation with electric power supplied from the battery 207 via the light emission switch unit 206. Therefore, when the light emission switch unit 206 is off, no power is supplied, so that the operation is not performed.
  • the wireless unit 204 is an interface connected to a wireless network, and transmits and receives data to and from the wireless device 201B and the external device 104 (FIG. 1) through the access point 103 (FIG. 1) by wireless communication.
  • the wireless unit 204 transmits a packet created by the control unit 208 based on a packet format described later to the access point 103.
  • the wireless unit 204 outputs the received packet to the control unit 208.
  • the light reception switch unit 205 switches ON / OFF according to an instruction from the control unit 208, and switches supply / cutoff of power from the battery 207 to the light reception sensor unit 202.
  • the light emission switch unit 206 switches ON / OFF according to an instruction from the control unit 208 and switches supply / cut-off of power from the battery 207 to the light emission sensor unit 203.
  • the light emission control of the light emission sensor unit 203 is performed by the control unit 208 performing ON / OFF control of the light emission switch unit 206.
  • the battery 207 is a primary battery and is periodically replaced every maintenance period.
  • the battery 207 is electrically connected to the light receiving sensor unit 202 through the light receiving switch unit 205, the light emitting sensor unit 203 through the light emitting switch unit 206, and the wireless unit 204, and is necessary for each component to be driven. To supply power.
  • the battery 207 supplies electric power necessary for the control unit 208 to operate.
  • the remaining battery level detection unit 209 is a component that detects the remaining battery level value of the battery 207, for example, by measuring the open-circuit voltage or by measuring the voltage when a predetermined rated current is passed, Detect battery level. This battery remaining amount detection unit 209 detects the battery remaining amount value of the battery 207 in response to a request from the control unit 208 and outputs the detected value to the control unit 208.
  • the timer 210 is a component that measures a predetermined time. For example, the timer 210 starts decrementing from a predetermined value in response to a request from the control unit 208, and notifies the control unit 208 when the value becomes zero.
  • the control unit 208 is a configuration unit that controls the entire radio apparatus 201A, and includes, for example, a CPU (Central Processing Unit). This is realized by the control unit 208 (CPU) developing and executing a program stored in a storage unit (not shown).
  • CPU Central Processing Unit
  • the control unit 208 performs wireless communication with the opposing wireless device 201B via the wireless unit 204, and switches functions so as to be a light emitting side wireless device or a light receiving side wireless device based on transmitted data.
  • the pair of wireless devices 201 (201A, 201B) is configured such that a master-slave relationship is established in which the light-receiving side wireless device is “master wireless device” and the other light-emitting side wireless device is “slave wireless device”. It is assumed that the control unit 208 of the light receiving side wireless device operates and instructs the control unit 208 of the light emitting side wireless device.
  • the wireless device 201 (201A, 201B) according to the first embodiment switches the function (master-slave relationship) between the light emitting side wireless device and the light receiving side wireless device based on the battery remaining value of the battery 207.
  • control unit 208 has a battery remaining capacity determination function, and acquires the battery remaining value of the battery 207 at a predetermined timing. For example, the control unit 208 causes the timer 210 to measure a predetermined time, receives a notification from the timer 210 that the predetermined time is reached, and acquires the remaining battery level value of the battery 207 from the remaining battery level detection unit 209. .
  • the control unit 208 functions as a light receiving side radio
  • the light receiving switch unit 205 is turned on to supply power to the light receiving sensor unit 202, while the light emitting switch unit 206 is turned off to the light emitting sensor unit 203. Stop the power supply (to save power).
  • the control unit 208 functions as a light emitting side radio
  • the light emitting switch unit 206 is turned on to supply power to the light emitting sensor unit 203, while the light receiving switch unit 205 is turned off to the light receiving sensor unit 202. Stop the power supply (to save power).
  • FIGS. 3 shows the format of the remaining battery level confirmation packet 300
  • FIG. 4 shows the format of the remaining battery level confirmation ACK packet 400
  • FIG. 5 shows the format of the status change packet 500
  • FIG. 6 shows the format of the status change ACK packet 600.
  • These packets all have headers (301, 401, 501 and 601) necessary for wireless communication, but these specific fields follow the format of each wireless communication system.
  • FIG. 3 shows a format of the battery remaining amount confirmation packet 300.
  • the battery remaining amount confirmation packet 300 is a packet sent from the light receiving side wireless device to the light emitting side wireless device, and includes at least a header 301, a packet ID 302, a transmission source address 303, and a destination address 304.
  • the packet ID 302 stores information for identifying the packet. For example, “1” indicating the battery remaining amount confirmation packet 300 is stored.
  • the transmission source address 303 stores the IP address of the light receiving side radio.
  • the destination address 304 stores the IP address of the light emitting side radio.
  • FIG. 4 shows the format of the battery remaining amount confirmation ACK packet 400.
  • the battery remaining amount confirmation ACK packet 400 is a packet returned as a response signal (ACK) of the battery remaining amount confirmation packet 300 transmitted from the light receiving side wireless device, and includes at least a header 401, a packet ID 402, and a transmission source address 403. And a destination address 404 and a remaining battery level 405.
  • the packet ID 402 stores information for identifying the packet. For example, “2” indicating the battery remaining amount confirmation ACK packet 400 is stored.
  • the source address 403 stores the IP address of the light emitting side radio.
  • the destination address 304 stores the IP address of the light receiving side radio.
  • a battery remaining amount value of the battery 207 is stored in the battery remaining amount 405.
  • FIG. 5 shows the format of the state change packet 500.
  • the state change packet 500 is transmitted from the light receiving side wireless device that is the “master wireless device” to the light emitting side wireless device that is the “slave wireless device”, and functions (master-slave relationship) between the light receiving side wireless device and the light emitting side wireless device.
  • This is a packet for requesting switching.
  • This state change packet 500 includes at least a header 501, a packet ID 502, a transmission source address 503, and a destination address 504.
  • the packet ID 502 stores information for identifying the packet. For example, “3” indicating the state change packet 500 is stored.
  • the transmission source address 303 stores the IP address of the light receiving side wireless device that is the “main wireless device”.
  • the destination address 304 stores the IP address of the light emitting side wireless device that is the “slave wireless device”.
  • FIG. 6 shows the format of the state change ACK packet 600.
  • the state change ACK packet 600 is a packet that is returned as a response signal (ACK) of the state change packet 500, and is transmitted from the light emitting side radio that is the “slave radio” to the light receiving side radio that is the “main radio”.
  • the This state change ACK packet 600 includes at least a header 601, a packet ID 602, a transmission source address 603, and a destination address 604.
  • the packet ID 602 stores information for identifying the packet. For example, “4” indicating the state change ACK packet 600 is stored.
  • the transmission source address 303 stores the IP address of the light emitting side radio device that is the “slave radio device”.
  • the destination address 304 stores the IP address of the light receiving side wireless device that is the “main wireless device”.
  • FIG. 7 is a time chart showing the processing operation of the wireless device 201A that functions as the light receiving side wireless device that is the “primary wireless device” and the processing operation of the wireless device 201B that functions as the light emitting side wireless device that is the “secondary wireless device”. It is a chart.
  • the wireless device 201A is functioning as a light receiving side wireless device which is a “primary wireless device”, and the light emitting side wireless device where the wireless device 201B is a “secondary wireless device”. Is functioning as Here, the processing of the access point 103 is omitted in FIG.
  • the wireless device 201A functions as a light receiving side wireless device that is a “primary wireless device”, as a light receiving side wireless device 201A, and when it functions as a light emitting side wireless device that is a “secondary wireless device”, This is referred to as a light emitting side wireless device 201A.
  • the control unit 208 of the wireless device 201A on the light receiving side causes the timer 210 to start counting down (step S101).
  • the control unit 208 that has received the notification that the count has reached 0 from the timer 210 stores the address of the wireless device 201B in the destination address 304, and creates the battery remaining amount confirmation packet 300.
  • the wireless unit 204 transmits a battery remaining amount confirmation packet 300 to the access point 103 (step S103). As a result, the battery remaining amount confirmation packet 300 is transmitted to the wireless device 201B via the access point 103.
  • the wireless unit 204 receives the battery remaining amount confirmation packet 300 (step S104), the control unit 208 confirms the battery remaining amount confirmation packet 300, and the battery remaining amount detecting unit 209 receives the remaining battery amount. Instruct the detection of. Thereby, the battery remaining amount detection part 209 detects the battery remaining amount of the battery 207 (step S105).
  • the battery remaining amount B is referred to.
  • the control unit 208 stores the remaining battery level B detected by the remaining battery level detection unit 209 as the remaining battery level 405 and creates the remaining battery level confirmation ACK packet 400. Then, the wireless unit 204 transmits a battery remaining amount confirmation ACK packet 400 to the access point 103 (step S106). As a result, the battery remaining amount confirmation ACK packet 400 is transmitted to the wireless device 201A via the access point 103.
  • the wireless unit 204 receives the battery remaining amount confirmation ACK packet 400 (step S107), and the control unit 208 acquires the battery remaining amount B stored in the battery remaining amount confirmation ACK packet 400 ( Step S108). Then, the control unit 208 instructs the remaining battery level detection unit 209 to detect the remaining battery level. Thereby, the battery remaining charge detection part 209 detects the battery remaining charge of the own battery 207 (step S109).
  • the battery remaining amount A is referred to.
  • Step S110 the control unit 208 compares and determines the remaining battery level A and the remaining battery level B (remaining battery level A> remaining battery level B?) (Step S110). As a result of the determination in step S110, if the remaining battery charge B is greater (No in step S110), the control unit 208 once ends the switching process, starts the switching process again, and executes step S101.
  • step S110 if the remaining battery level A is larger (step S110, Yes), the control unit 208 creates the state change packet 500. Then, the wireless unit 204 transmits the state change packet 500 to the access point 103 (step S111). As a result, the state change packet 500 is transmitted to the wireless device 201B via the access point 103.
  • the wireless unit 204 receives the state change packet 500 (step S112), and the control unit 208 confirms the state change packet 500. Then, the control unit 208 of the light emitting side wireless device 201B switches to function as a light receiving side wireless device that is a “main wireless device”, and changes the state (light emitting side ⁇ light receiving side, step S113). As a result, the wireless device 201B is switched from the light emitting side wireless device to the light receiving side wireless device.
  • control unit 208 creates state change ACK packet 600.
  • the wireless unit 204 transmits the state change ACK packet 600 to the access point 103 (step S114).
  • the state change ACK packet 600 is transmitted to the wireless device 201A via the access point 103.
  • radio section 204 receives state change ACK packet 600 (step S115), and control section 208 confirms state change ACK packet 600. Then, the control unit 208 of the wireless device 201A switches to function as a light emitting side wireless device that is a “slave wireless device” and changes the state (light receiving side ⁇ light emitting side, step S116). As a result, the wireless device 201A is switched from the light receiving side wireless device to the light emitting side wireless device.
  • step S114 the wireless device 201B on the light receiving side once ends the switching process, starts the switching process again, and executes step S101. As described above, the wireless device 201 repeatedly performs the switching process.
  • the pair of wireless devices 201 (201 ⁇ / b> A and 201 ⁇ / b> B) including the light receiving sensor unit 202 and the light emitting sensor unit 203 is configured such that the wireless device 201 having the larger battery remaining value is the light emitting side. Functions as a radio and emits light.
  • the functions of the light receiving side wireless device and the light emitting side wireless device that each wireless device 201 was functioning are switched.
  • it is possible to avoid biased battery consumption due to higher power consumption when functioning as a light-emitting side radio generally extending the operating time of the entire detection system 200 and enabling continuous operation. I can expect.
  • the wireless device 201A according to the first embodiment performs wireless communication with the opposing wireless device 201B, and switches functions (master-slave relationship) so as to be a light emitting side wireless device or a light receiving side wireless device. In the second embodiment, this switching can also be performed according to a sensor switching instruction from the external device 104.
  • An access point 2103 (corresponding to the access point 103 in FIG. 1) shown in FIG. 8 responds to a sensor switching instruction transmitted from the external device 104 by wireless devices 2201 (2201A and 2201B) (wireless devices 201A and 201B in FIG. 1). Correspond to each of them) and transmit the state change packet 500 (FIG. 5) to each of the functions as the light receiving side radio device that is the “primary radio” and the function as the light emitting side radio device that is the “secondary radio”. Let them switch. As a result, the master-slave relationship between the wireless device 2201A and the wireless device 2201B is switched.
  • the sensor switching instruction is transmitted when the external device 104 determines that the sensor is abnormal based on a sensor detection signal transmitted from the wireless device 2201 (2201A, 2201B), for example. For example, when a light emission instruction is transmitted but the light receiving sensor unit 202 is not receiving light, a sensor abnormality that light cannot be received due to an obstacle such as dust on the optical path from the light emitting sensor unit 203 to the light receiving sensor unit 202 occurs. There is a case.
  • FIG. 8 is a configuration diagram of an access point according to the second embodiment.
  • the access point 2103 is a relay device that connects each wireless device 2201 and the external device 104 so that wireless communication is possible. This access point 2103 once receives all the packets transmitted from each wireless device 2201 and transfers them to the destination address of the packet. On the other hand, a packet transmitted from the external device 104 is once received and transferred to the wireless device 2201 corresponding to the destination address of the packet.
  • the access point 2103 includes a control unit 701, a storage unit 702, and a wireless unit 703.
  • the control unit 701 is a component that controls the entire access point 2103, and is configured by a CPU, for example. This is realized by the access point 2103 (CPU) developing and executing a program stored in the storage unit 702.
  • the storage unit 702 is a component that stores data and programs, and is a storage unit such as an HDD (Hard Disc Drive) or a RAM (Random Access Memory).
  • the wireless unit 703 is an interface connected to the wireless network, and transmits and receives data to and from each wireless device 2201 (corresponding to the wireless device 201 in FIG. 1) and the external device 104 (FIG. 1).
  • the access point 2103 has three functions. This access point 2103 has (1) a function for switching the master-slave relationship by transmitting the state change packet 500 (FIG. 5) to both wireless devices 2201 (2201A, 2201B), and (2) whether or not the sensor abnormality has been resolved. And (3) if the response content of the reconfirmation request from the external device 104 is “sensor error has been resolved”, the master / slave after switching While maintaining the relationship, if “sensor abnormality has not been resolved”, the function of transmitting the state change packet 500 again to both wireless devices 2201 (2201A, 2201B) and returning to the master-slave relationship before switching, Have
  • the access point 2103 executes a switching process when receiving a sensor switching instruction from the external device 104 (FIG. 1).
  • the wireless device 2201A functions as a light receiving side wireless device that is a “primary wireless device”
  • the wireless device 2201B functions as a light emitting side wireless device that is a “secondary wireless device”.
  • control unit 701 creates the state change packet 500 (FIG. 5), and the wireless unit 703 transmits the state change packet 500 to the light emitting side wireless device 2201B (step S201).
  • wireless device 2201B Processing of light emitting side wireless device
  • the wireless unit 204 receives the state change packet 500 (step S202), and the control unit 208 confirms the state change packet 500.
  • the control unit 208 of the light emitting side wireless device 2201B switches to function as the light receiving side wireless device that is the “main wireless device”, and changes the state (light emitting side ⁇ light receiving side, step S203).
  • the wireless device 2201B switches from the light emitting side wireless device to the light receiving side wireless device.
  • control unit 208 After switching, the control unit 208 creates a state change ACK packet 600 (FIG. 6). Radio section 204 transmits state change ACK packet 600 to access point 2103 (step S204).
  • the wireless unit 703 receives the state change ACK packet 600 (step S205), and the control unit 701 confirms the state change ACK packet 600.
  • the control unit 701 creates the state change packet 500 and transmits the state change packet 500 to the wireless device 2201A which is the other wireless device 2201 (step S206).
  • radio section 204 receives state change ACK packet 600 (step S207), and control section 208 confirms state change ACK packet 600.
  • the control unit 208 of the wireless device 2201A switches to function as a light emitting side wireless device that is a “slave wireless device”, and changes the state (light receiving side ⁇ light emitting side, step S208). As a result, the wireless device 2201A switches from the light receiving side wireless device to the light emitting side wireless device.
  • step S203 the processing of the wireless device 2201B for switching from the light emitting side wireless device to the light receiving side wireless device (step S203) and the processing of the wireless device 2201A for switching from the light receiving side wireless device to the light emitting side wireless device (step S208) are performed at the same time. Executed.
  • control unit 208 After switching, control unit 208 creates state change ACK packet 600. Radio section 204 transmits state change ACK packet 600 to access point 2103 (step S209).
  • the wireless unit 703 receives the state change ACK packet 600 (step S210), and the control unit 701 confirms the state change ACK packet 600. Then, the control unit 701 confirms whether or not the sensor abnormality is resolved in the external device 104 (FIG. 1). For example, the control unit 701 creates a predetermined confirmation request packet, and the wireless unit 703 transmits the confirmation request packet to the external device 104 (step S211).
  • the wireless unit 703 receives a response packet to the confirmation request packet from the external device 104 (step S212).
  • control unit 701 of the access point 2103 performs the processing of steps S201 to S210 again to the state before switching the master-slave relationship. Perform processing to return.
  • the control unit 701 of the access point 2103 performs the processing of steps S201 to S210 again, so that the master-slave relationship between the wireless device 2201A and the wireless device 2201B is restored, and the wireless device 2201A is the “main wireless device”. It functions as a light receiving side wireless device, and the wireless device 2201B functions as a light emitting side wireless device that is a “slave wireless device”.
  • the light receiving sensor unit 202 does not receive light even though the light emitting sensor unit 203 emits light, or dust or the like is on the optical path from the light emitting sensor unit 203 to the light receiving sensor unit 202.
  • a sensor abnormality occurs such that light cannot be received due to an obstacle
  • the wireless device 2201 according to the second embodiment switches functions (master-slave relationship) so as to be a light emitting side wireless device or a light receiving side wireless device in accordance with a sensor switching instruction from the external device 104. In the third embodiment, this switching can be performed when a communication abnormality is detected.
  • the wireless device 3201 reduces power consumption by suppressing the transmission output of wireless communication.
  • the power source of the wireless device 3201 in the third embodiment is the battery 207 as in the wireless device 201 according to the first embodiment and the wireless device 2201 according to the second embodiment.
  • the wireless device 3201 according to the third embodiment is intended to realize longer operation by further reducing power consumption and extending the life of the battery 207. Therefore, the wireless device 3201 according to the third embodiment performs communication while suppressing the transmission output of wireless communication as much as possible.
  • the wireless device 3201 can transmit and receive packets and the like by transmitting and receiving packets and the like with the access point 3103 (corresponding to the access point 103 in FIG. 1) that is a wireless communication relay device so that such communication can be normally performed. Adjust and set as low as possible. This set transmission output value is defined as “minimum transmission output value”.
  • the wireless device 3201 Since the wireless device 3201 performs communication with this minimum transmission output value, the power consumption required for transmission is reduced, so that the battery life is extended and the operating time of the wireless device 3201 is increased. On the other hand, since the transmission output value is small, there is a problem that the transmission output value is weak against interference from the outside (electromagnetic wave or the like). A communication failure may occur between the wireless device 3201 and the access point 3103 due to this external interference.
  • the wireless device 3201 normally performs communication with a minimum transmission output value, but when a communication failure occurs due to interference from the outside, the wireless device 3201 once increases the minimum transmission output value. As a result, the radio wave (desired wave) output with the changed transmission output value has become so large that it is not affected by the interference wave (from the outside) (the desired wave becomes dominant). Communication between the wireless device 3201 and the access point 3103 becomes possible. As described above, the wireless device 3201 according to the third embodiment temporarily increases the transmission output value when a communication failure occurs to make it communicable with the access point 3103.
  • the wireless device 3201 in which a communication failure has occurred with the access point 3103 (hereinafter, referred to as a failed wireless device 3201x) is a “slave wireless device” from the light receiving side wireless device that is the “main wireless device”.
  • a process of switching the master-slave relationship is performed on the light emitting side radio.
  • the wireless device 3201y that is paired with the wireless device 3201x in which a failure has occurred and has not detected a communication failure with the access point 3103 functions as a light-receiving-side wireless device that is the “main wireless device”.
  • the radio device 3201x in which the failure has occurred is returned to the minimum transmission output value in order to reduce power consumption.
  • the wireless device 3201 according to the third embodiment performs wireless communication with the other wireless device 3201 disposed opposite to the light emitting side wireless device or the light receiving side wireless. Switch functions (master-slave relationship) so that
  • the access point 3103 determines that a communication failure has occurred when a packet transmitted to the wireless device 3201 has not arrived, temporarily raises the transmission output value from the minimum transmission output value, and then returns to the wireless device 3201 again. Send (resend) the packet. When this retransmitted packet is not received, the access point 3103 increases the transmission output value step by step, and transmits the packet to the wireless device 3201 each time. If the resend packet still does not arrive, give up.
  • the wireless device 3012A and the wireless device 3012B switch the master-slave relationship.
  • the packet is normally transmitted / received between the wireless device 3012 functioning as the light receiving side wireless device that is the “primary wireless device” after switching and the access point 3103 (without any communication abnormality)
  • the wireless device 3012 functioning as the light-emitting side wireless device returns the transmission output value once increased to the minimum transmission output value.
  • the access point 3103 adjusts the transmission output value so that the transmission output value in the wireless communication with the wireless device 3201 (3201A, 3201B) is as low as possible, and transmits the transmission output value change packet. Send. If the transmission output value change ACK packet, which is the response signal, does not arrive from the wireless device 3201 within a predetermined time, the transmission output value is adjusted again and the transmission output value change packet is transmitted. In this way, the minimum transmission output value is determined.
  • a response signal is transmitted from the wireless device 3201 to the packet transmitted from the access point 3103 to the wireless device 3201 within a predetermined time.
  • the access point 3103 executes a switching process on the assumption that there is no data.
  • the control unit 701 (FIG. 8) of the access point 3103 temporarily increases the transmission output value by a predetermined value (one step) to obtain a changed transmission output value (step S301), and stores the changed transmission output value.
  • the transmitted output value change packet (not shown) is transmitted (step S302).
  • wireless device 3201A processing of light receiving side radio device
  • the wireless unit 204 receives the transmission output value change packet (step S303), and the control unit 208 acquires the post-change transmission output value stored in the transmission output value change packet. Then, the control unit 208 changes the transmission output value when performing wireless communication to the changed transmission output value acquired from the minimum transmission output value (step S304), and creates a transmission output value change ACK packet.
  • the wireless unit 204 transmits a transmission output value change ACK packet to the access point 3103 with the changed transmission output value (step S305).
  • step S306 the wireless unit 703 receives the transmission output value change ACK packet. Then, the control unit 701 of the access point 3103 determines whether or not the transmission output value change ACK packet has been received from the transmission destination within a predetermined time after transmitting the transmission output value change packet (step S307). In this time chart, since the transmission output value change ACK packet is received in step S306 (step S307, Yes), the process of the next step S201 is performed.
  • Step S307 if the transmission output value change ACK packet has not been received (No at Step S307), the process returns to Step S301, and the control unit 701 temporarily increases the transmission output value by a predetermined value (one step) and performs wireless communication. .
  • the control unit 701 of the access point 3103 performs the processing of steps S201 to S210, and performs processing for switching the master-slave relationship. Since the processes in steps S201 to S210 are the same as those in the second embodiment, description thereof will be omitted. As a result, the master-slave relationship between the wireless device 3201A and the wireless device 3201B is switched, the wireless device 3201A functions as a light emitting side wireless device that is a “slave wireless device”, and the light receiving side wireless device that the wireless device 3201B is a “main wireless device”. Functions as a machine.
  • the access point 3103 transmits a communication confirmation signal with the minimum transmission output value (hereinafter referred to as the minimum transmission output value B) adjusted with the wireless device 3201B (step S201).
  • This communication confirmation signal may be any signal as long as a response signal is returned from the transmission destination.
  • the wireless unit 204 receives the communication confirmation signal (step S309), and returns (transmits) the response signal (step S310).
  • the wireless unit 703 receives the response signal (step S311).
  • the control unit 701 of the access point 3103 determines whether or not a response signal has been received from the transmission destination within a predetermined time after transmitting the communication confirmation signal (step S312). In this time chart, since the response signal is received in step S311 (step S312, Yes), the switching process is terminated.
  • step S312, No if the transmission output value change ACK packet has not been received (step S312, No), the control unit 701 of the access point 3103 performs the processing of steps S201 to S210 again to return to the state before switching the master-slave relationship. Further, a process of returning the transmission output value in the wireless communication with the light receiving side wireless device 3201A to the minimum transmission output value is performed. Then, the control unit 701 of the access point 3103 ends the switching process.
  • the control unit 701 of the access point 3103 performs the processing of steps S201 to S210 again, so that the master-slave relationship between the wireless device 3201A and the wireless device 3201B is restored, and the wireless device 3201A is the “main wireless device”. It functions as a light receiving side wireless device, and the wireless device 3201B functions as a light emitting side wireless device that is a “slave wireless device”.
  • control unit 701 of the access point 3103 transmits, for example, a transmission output value change packet storing a minimum transmission output value, and transmits a transmission output value in wireless communication with the light receiving side wireless device 3201A as a minimum. Return to the output value.
  • the wireless device 3201 (effect) When the wireless device 3201 (3201A, 3201B) according to the third embodiment functions as a light-receiving-side wireless device that is a “main wireless device”, the quality of wireless communication is temporarily deteriorated, and a communication abnormality is detected.
  • the wireless device 3201A of the light receiving side wireless device that is the “primary wireless device” makes a request to the wireless device 3201B of the light emitting side wireless device that is the “secondary wireless device”, and the light emitting side wireless device Switch the function (master-slave relationship) between the receiver and the receiver radio. Accordingly, the wireless device 3201B functions as a light receiving side wireless device that is a “main wireless device”.
  • the communication path to the access point 3103 is not between the wireless device 3201A and the access point 3103, but between the wireless device 3201B and the access point 3103. Since the communication path changes in this way, even if there is an abnormality (for example, a radio wave failure) in the communication path between the wireless apparatus 3201A and the access point 3103, the wireless apparatus 3201B-access point (which seems to have no abnormality) It is possible to normally communicate with the external device 104 (FIG. 1) using the communication path between 3103.
  • an abnormality for example, a radio wave failure
  • the wireless device 3201 switches the function (master-slave relationship) between the light emitting side wireless device and the light receiving side wireless device when the quality of wireless communication temporarily changes.
  • the wireless communication path changes between the wireless device 3201B and the access point 3103, it can be expected that the communication abnormality is resolved.
  • the present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the gist of the present invention.
  • the light receiving switch unit 205 and the light emitting switch unit 206 are described separately, but it is sufficient that power is supplied to the light receiving sensor unit 203 or the light emitting sensor unit 204.
  • the switch unit 2050 may be combined into one.
  • the wireless device 201 according to the first to third embodiments is, for example, an automatic transaction device such as ATM (Automated Teller Machine), a bill or It can be used as a device for detecting a medium such as a passbook or paper.
  • ATM Automatic Teller Machine
  • a large number of detection devices are arranged inside a general ATM, and each of them has wiring for supplying power and wiring for communication. This wiring is very troublesome in the ATM manufacturing process, and there is a problem that the wiring space in the apparatus must be taken into consideration at the design stage. Therefore, by using the wireless device 201 according to the first to third embodiments, power is supplied from the battery, and communication can be performed wirelessly, so that these problems can be solved.
  • the detection system 200 may use a wireless network relay device such as a general wireless router instead of the access point 103.
  • a wireless network relay device such as a general wireless router
  • the pair of wireless devices 201 communicates with the external device 104 via the wireless router. Therefore, even if an abnormality occurs on the communication path between the wireless device 201 and the wireless router, the communication abnormality can be resolved through another wireless router.
  • step S103 may be executed when the predetermined time comes, and the wireless device 201A on the light receiving side may transmit the battery remaining amount confirmation packet 300. .
  • the control unit 208 counts down the timer 210, compares and determines the remaining battery level, and performs switching processing.
  • the access point 103 and the external device 104 It may be performed by the control unit.
  • the timer may be counted down using a timer built in the access point 103 or the external device 104.
  • the access point 103 and the external device 104 transmit the battery remaining amount confirmation packet 300 to each of the wireless devices 201, receive the battery remaining amount confirmation ACK packet 400 from each wireless device 201, and the access point 103 and the external device 104.
  • the control unit may perform comparison determination of the remaining battery level. Further, if switching is performed as a result of the comparison determination, the control unit of the access point 103 or the external device 104 may transmit the state change packet 500 to each wireless device 201.

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Abstract

In this detection system (200), two wireless devices (201) (wireless device (201A) and wireless device (201B)), each provided with a light emission sensor unit (203) and a light reception sensor unit (202), are installed so that the respective light emission sensor unit (203) and light reception sensor unit (202) face each other. The pair of wireless devices (201) are connected so as to be able to communicate wirelessly. The wireless devices (201) communicate wirelessly and are alternately switched between a light-emission-side device in which the light emission sensor unit (203) functions and the light reception sensor unit (202) stops functioning, and a light-reception-side device in which the light reception sensor unit (202) functions and the light emission sensor unit (203) stops functioning, so that one is actuated as a light-emission-side device, and the other as a light-reception-side device. A highly reliable detection system that can be continuously operated is thereby provided.

Description

検出システムおよび自動取引装置Detection system and automatic transaction device
　本発明は、検出システムおよび自動取引装置に関し、特に、互いの発光部と受光部とが対向するように配設された一対の検出装置が通信可能に接続される検出システムおよび自動取引装置に関する。 The present invention relates to a detection system and an automatic transaction apparatus, and more particularly to a detection system and an automatic transaction apparatus in which a pair of detection apparatuses arranged so that a light emitting unit and a light receiving unit face each other are communicably connected.
　従来、特開平８－３２７３１５号に記載された媒体検出装置においては、発光素子および受光素子の両方を同一面に備え、発光素子が発した光がプリズムにより反射されて、受光素子が受光される。
　また、特開２０１２－１１８７９１号に記載された自動取引装置においては、発光部からの光線を受光部が受光するように、発光部および受光部が対となって配設され、発光部および受光部はそれぞれ、自動取引装置の制御基板（アクセスポイント）との間で無線通信を行う。 Conventionally, in the medium detecting device described in Japanese Patent Application Laid-Open No. 8-327315, both the light emitting element and the light receiving element are provided on the same surface, and the light emitted from the light emitting element is reflected by the prism and the light receiving element is received. .
In addition, in the automatic transaction apparatus described in Japanese Patent Application Laid-Open No. 2012-118791, the light emitting unit and the light receiving unit are arranged in pairs so that the light receiving unit receives the light from the light emitting unit. Each unit performs wireless communication with a control board (access point) of the automatic transaction apparatus.
　しかしながら、特開２０１２－１１８７９１号に記載の発光部（発光側装置）と受光部（受光側装置）が対となって配設される検出システムでは、２次電池と充電回路とを有している。一般的に、発光部は、受光するよりも発光し続ける方が、消費電力が大きい。そのため、発光側装置と受光側装置とでは、発光側装置の方が受光側装置より先に１次電池を消耗してしまい、発光側装置の電池の方だけ入れ替える頻度が高いという問題が生じる。そこで、特開２０１２－１１８７９１号に記載の検出システムは、発光側装置および受光側装置それぞれが２次電池と充電回路を実装するようにしている。しかしながら、２次電池と充電回路とを実装することで装置が大型化する問題がある。 However, the detection system described in Japanese Patent Application Laid-Open No. 2012-118791 in which the light emitting unit (light emitting side device) and the light receiving unit (light receiving side device) are arranged in pairs includes a secondary battery and a charging circuit. Yes. In general, the light emitting unit consumes more power when it continues to emit light than it receives light. Therefore, in the light emitting side device and the light receiving side device, there is a problem that the light emitting side device consumes the primary battery earlier than the light receiving side device, and only the battery of the light emitting side device is replaced more frequently. Therefore, in the detection system described in Japanese Patent Application Laid-Open No. 2012-118791, the light emitting side device and the light receiving side device are each mounted with a secondary battery and a charging circuit. However, there is a problem that the apparatus is enlarged by mounting the secondary battery and the charging circuit.
　また、従来の技術は、発光側装置から受光側装置までの光路上にゴミ等の障害物があることにより、受光側装置が受光できずエラーとなる問題がある。
　また、無線通信における電波の通信品質は、近隣で発生した電波が干渉することによる影響を受ける。そのため、同じ周波数帯を利用する何らかのデバイスが接近することで、一時的に通信品質が悪化し、電波障害としてエラーとなる問題がある。 Further, the conventional technique has a problem that the light receiving side apparatus cannot receive light and an error occurs due to an obstacle such as dust on the optical path from the light emitting side apparatus to the light receiving side apparatus.
The communication quality of radio waves in wireless communication is affected by interference of radio waves generated in the vicinity. Therefore, when any device using the same frequency band approaches, there is a problem that communication quality temporarily deteriorates and an error occurs as a radio interference.
　本発明は、以上のような問題を解決するために、連続運用が可能な信頼性の高い検出システムおよび自動取引装置を提供することを課題とする。 In order to solve the above problems, an object of the present invention is to provide a highly reliable detection system and automatic transaction apparatus capable of continuous operation.
　前記課題を解決するために、本発明の検出システムは、発光部と受光部とを備える２つの検出装置が、互いの前記発光部と前記受光部とが対向するように配設され、その一対の検出装置が無線通信可能に接続される検出システムであって、前記一対の検出装置は、前記無線通信を行って前記発光部が機能し前記受光部の機能が停止する発光側装置と、前記受光部が機能し前記発光部の機能が停止する受光側装置とに交互に切り替えて、一方が前記発光側装置、他方が前記受光側装置として駆動する構成とする。 In order to solve the above-described problems, in the detection system of the present invention, two detection devices each including a light emitting unit and a light receiving unit are disposed so that the light emitting unit and the light receiving unit face each other, and the pair A detection system in which the detection devices are connected so as to be capable of wireless communication, wherein the pair of detection devices perform the wireless communication, the light emitting unit functions and the light receiving unit stops functioning; and The light-receiving unit functions and the light-emitting unit stops functioning alternately, and one is driven as the light-emitting device and the other is driven as the light-receiving device.
　この検出システムによれば、一対の検出装置を備え、一方が発光側装置、他方が受光装置となるように切り替えることができるので、問題等の発生時に切り替えることで、システムを停止させることなく運用することができる。例えば、消費電力が多い発光側装置の電池電圧が低下したとき、発光側装置を受光側装置に切り換え、消費電力が少ない受光側装置を発光側装置に切り換えることができる。 According to this detection system, a pair of detection devices are provided, and one can be switched so that one is a light-emitting device and the other is a light-receiving device. can do. For example, when the battery voltage of the light emitting side device with high power consumption decreases, the light emitting side device can be switched to the light receiving side device, and the light receiving side device with low power consumption can be switched to the light emitting side device.
　本発明によれば、連続運用が可能な信頼性の高い検出システムおよび自動取引装置を提供することができる。 According to the present invention, it is possible to provide a highly reliable detection system and automatic transaction apparatus capable of continuous operation.
　また、受光装置よりも発光装置の方が消費電力は多い。本発明によれば、切り替えを行うため、消費電力を低減させることができる。例えば、消費電力が多い発光側装置のみ電池交換が行われていたが、切り替えることにより、発光側装置が受光側装置になるため、消費電力が低減し、電池交換頻度が少なくなる。 Also, the light emitting device consumes more power than the light receiving device. According to the present invention, since switching is performed, power consumption can be reduced. For example, although the battery replacement is performed only for the light emitting side device that consumes a large amount of power, the light emitting side device becomes the light receiving side device by switching, so that the power consumption is reduced and the frequency of battery replacement is reduced.
　また、センサ異常が発生したときに、切り替えを行うことでシステムを停止させることなく、運用することができる。 Also, when a sensor abnormality occurs, it can be operated without stopping the system by switching.
　また、通信異常が発生したときに、切り替えを行うことでシステムを停止させることなく、運用することができる。 Also, when a communication error occurs, it can be operated without stopping the system by switching.
第１の実施形態に係る検出システムの全体構成図である。1 is an overall configuration diagram of a detection system according to a first embodiment. 第１の実施形態に係る無線装置の構成図である。It is a block diagram of the radio | wireless apparatus which concerns on 1st Embodiment. 電池残量確認パケットの一例を示す図である。It is a figure which shows an example of a battery remaining charge confirmation packet. 電池残量確認ＡＣＫパケットの一例を示す図である。It is a figure which shows an example of a battery remaining charge confirmation ACK packet. 状態変更パケットの一例を示す図である。It is a figure which shows an example of a state change packet. 状態変更ＡＣＫパケットの一例を示す図である。It is a figure which shows an example of a state change ACK packet. 第１の実施形態に係る無線装置の切替処理動作のタイムチャートである。It is a time chart of the switching process operation | movement of the radio | wireless apparatus which concerns on 1st Embodiment. 第２の実施形態に係るアクセスポイントの構成図である。It is a block diagram of the access point which concerns on 2nd Embodiment. 第２の実施形態に係る無線装置とアクセスポイントとの切替処理動作のタイムチャートである。It is a time chart of the switching processing operation | movement between the radio | wireless apparatus and access point which concerns on 2nd Embodiment. 第３の実施形態に係る無線装置とアクセスポイントとの切替処理動作のタイムチャートである。It is a time chart of the switching processing operation of the radio | wireless apparatus and access point which concern on 3rd Embodiment. 無線装置の変形例である。It is a modification of a radio | wireless apparatus.
　以下、図面を参照して、本発明の実施の形態（以下、「本実施形態」と称する）につき詳細に説明する。なお、各図は、本発明について概略的に示してあるに過ぎない。よって、本発明は、図示例のみに限定されるものではない。また、各図において、共通する構成要素や同様な構成要素については、同一の符号を付し、それらの重複する説明を省略する。 Hereinafter, an embodiment of the present invention (hereinafter referred to as “the present embodiment”) will be described in detail with reference to the drawings. Each figure is only schematically showing the present invention. Therefore, the present invention is not limited to the illustrated example. Moreover, in each figure, the same code | symbol is attached | subjected about the common component and the same component, and those overlapping description is abbreviate | omitted.
≪第1の実施形態≫
（検出システム２００）
　図１は、本実施形態に係る検出システムの構成図である。
　検出システム２００は、一組の（一対の）無線装置２０１（２０１Ａと２０１Ｂ）（無線機能付き検出装置）と、アクセスポイント１０３（無線通信中継装置）と、外部装置１０４とを備える。無線装置２０１のそれぞれと、外部装置１０４とは、アクセスポイント１０３を介して、無線通信可能に接続される。
　この検出システム２００において、一組の無線装置２０１を複数組備えていてもよい。 << First Embodiment >>
(Detection system 200)
FIG. 1 is a configuration diagram of a detection system according to the present embodiment.
The detection system 200 includes a pair (a pair) of wireless devices 201 (201A and 201B) (detection devices with wireless functions), an access point 103 (wireless communication relay device), and an external device 104. Each of the wireless devices 201 and the external device 104 are connected via the access point 103 so that wireless communication is possible.
This detection system 200 may include a plurality of sets of a set of wireless devices 201.
（無線ネットワークＮＷ）
　無線装置２０１Ａと無線装置２０１Ｂとは、アクセスポイント１０３を経由したＮＷ１（センサ間無線ネットワーク）を介して無線通信可能に接続される。また、無線装置２０１のそれぞれと外部装置１０４とは、アクセスポイント１０３を経由したＮＷ２（外部間無線ネットワーク）を介して、無線通信可能に接続される。
　これらＮＷ１、ＮＷ２は、例えば、無線ＬＡＮ（Local Area Network）、ZigBee（登録商標）やBluetooth（登録商標）等を介して、インターネットプロトコル（Internet Protocol）技術を利用して相互接続されるコンピュータネットワークである。
　ここで、ＮＷ２における、アクセスポイント１０３－外部装置１０４間の無線ネットワークは有線であってもよく、例えば、有線のＬＡＮやＷＡＮ（Wide Area Network）である。 (Wireless network NW)
The wireless device 201 </ b> A and the wireless device 201 </ b> B are connected so as to be able to perform wireless communication via the NW 1 (inter-sensor wireless network) via the access point 103. In addition, each of the wireless devices 201 and the external device 104 are connected so as to be able to perform wireless communication via the NW 2 (inter-external wireless network) via the access point 103.
These NW1 and NW2 are computer networks that are interconnected using the Internet Protocol technology via, for example, a wireless local area network (LAN), ZigBee (registered trademark), Bluetooth (registered trademark), or the like. is there.
Here, the wireless network between the access point 103 and the external device 104 in the NW 2 may be wired, for example, a wired LAN or WAN (Wide Area Network).
　この検出システム２００の無線ネットワークＮＷ（ＮＷ１、ＮＷ２）において、無線装置２０１が外部装置１０４にパケットを送信する場合、無線装置２０１は一旦アクセスポイント１０３宛てにパケットを送信し、アクセスポイント１０３が外部装置１０４宛てに送信する。つまり、アクセスポイント１０３（無線通信中継装置）がネットワーク中継装置としての役割をする。反対に、外部装置１０４が無線装置２０１にパケット（例えば、発光・消灯指示）を送信する場合、外部装置１０４は一旦アクセスポイント１０３宛てにパケットを送信し、アクセスポイント１０３が（主無線機である受光側無線機として機能する）無線装置２０１宛てに送信する。 In the wireless network NW (NW1, NW2) of the detection system 200, when the wireless device 201 transmits a packet to the external device 104, the wireless device 201 once transmits a packet to the access point 103, and the access point 103 is the external device. Send to 104. That is, the access point 103 (wireless communication relay device) serves as a network relay device. Conversely, when the external device 104 transmits a packet (for example, a light emission / extinction instruction) to the wireless device 201, the external device 104 once transmits the packet to the access point 103, and the access point 103 is the main wireless device. Transmit to the wireless device 201 (which functions as a light receiving side wireless device).
（一組の無線装置２０１）
　一組の無線装置２０１である無線装置２０１Ａと無線装置２０１Ｂとは、同一構成の無線装置であり、それぞれ受光センサ部２０２および発光センサ部２０３を備え、一方の無線装置の発光センサ部２０３が発した光を、他方の無線装置の受光センサ部２０２が受光するように配置される。例えば、図１に示すように、無線装置２０１Ａと無線装置２０１Ｂとは互いが向かい合うように配置される。この無線装置２０１の構成については詳細を後記する。 (A set of wireless devices 201)
The wireless device 201A and the wireless device 201B, which are a set of wireless devices 201, are wireless devices having the same configuration, and each include a light receiving sensor unit 202 and a light emitting sensor unit 203, and the light emitting sensor unit 203 of one wireless device emits light. The light receiving sensor unit 202 of the other wireless device receives the received light. For example, as shown in FIG. 1, the wireless device 201A and the wireless device 201B are arranged so as to face each other. Details of the configuration of the wireless device 201 will be described later.
　この一組の無線装置２０１Ａと無線装置２０１Ｂとは、どちらか一方が発光専用の無線装置となり、他方が受光専用の無線装置となるように機能を切り替える。以下、発光専用の無線装置を「発光側無線機」、受光専用の無線装置を「受光側無線機」と称する。
　そして、無線装置２０１（２０１Ａ、２０１Ｂ）は、外部装置１０４からの発光指示に応じて発光し、消灯指示に応じて消灯する。 The functions of the pair of the wireless device 201A and the wireless device 201B are switched so that one of them is a wireless device dedicated to light emission and the other is a wireless device dedicated to light reception. Hereinafter, a radio device dedicated to light emission is referred to as a “light emitting side radio”, and a radio device dedicated to light reception is referred to as a “light receiving side radio”.
The wireless device 201 (201A, 201B) emits light in response to a light emission instruction from the external device 104, and turns off in response to a turn-off instruction.
（アクセスポイント１０３）
　アクセスポイント１０３は、各無線装置２０１と外部装置１０４との間を無線通信可能に接続する中継装置である。詳細は後記する第２の実施形態において説明する。 (Access point 103)
The access point 103 is a relay device that connects each wireless device 201 and the external device 104 so that wireless communication is possible. Details will be described in a second embodiment to be described later.
（外部装置１０４）
　外部装置１０４は、アクセスポイント１０３を介して、無線装置２０１（２０１Ａ、２０１Ｂ）と無線通信を行うコンピュータである。この外部装置１０４は、無線装置２０１に発光・消灯の指示を送信し、無線装置２０１から受光したことを受信する。これにより、外部装置１０４は、無線装置２０１Ａと無線装置２０１Ｂとの間で光が遮られたことを確認することができる。 (External device 104)
The external device 104 is a computer that performs wireless communication with the wireless device 201 (201 </ b> A, 201 </ b> B) via the access point 103. The external device 104 transmits a light emission / extinction instruction to the wireless device 201 and receives the reception of light from the wireless device 201. Thereby, the external device 104 can confirm that the light is blocked between the wireless device 201A and the wireless device 201B.
（無線装置２０１）
　図２は、第１の実施形態に係る無線装置の構成図である。図２は無線装置２０１Ａの構成図としているが、一組の無線装置２０１である無線装置２０１Ａと無線装置２０１Ｂとは、同一構成の無線装置である。
　無線装置２０１Ａは、対向する無線装置２０１Ｂと無線通信を行い、発光側無線機または受光側無線機となるように機能を切り替える。
　この無線装置２０１Ａは、受光センサ部２０２と、発光センサ部２０３と、無線部２０４と、受光スイッチ部２０５と、発光スイッチ部２０６と、電池２０７と、電池残量判定機能を有する制御部２０８と、電池残量検出部２０９と、タイマ２１０とを備える。 (Wireless device 201)
FIG. 2 is a configuration diagram of the radio apparatus according to the first embodiment. Although FIG. 2 is a configuration diagram of the wireless device 201A, the wireless device 201A and the wireless device 201B, which are a set of wireless devices 201, are wireless devices having the same configuration.
The wireless device 201A performs wireless communication with the opposite wireless device 201B, and switches functions so as to be a light emitting side wireless device or a light receiving side wireless device.
The wireless device 201A includes a light reception sensor unit 202, a light emission sensor unit 203, a wireless unit 204, a light reception switch unit 205, a light emission switch unit 206, a battery 207, and a control unit 208 having a battery remaining amount determination function. The battery remaining amount detecting unit 209 and the timer 210 are provided.
　図２に示す無線装置２０１Ａは、不図示の無線装置２０１Ｂと向かい合うように配置されている。すなわち、無線装置２０１Ａの発光センサ部２０３が発した光を、無線装置２０１Ｂの受光センサ部２０２が受光する。一方、無線装置２０１Ｂの発光センサ部２０３が発した光を、無線装置２０１Ａの受光センサ部２０２が受光する。 2 is arranged so as to face a wireless device 201B (not shown). That is, light emitted from the light emitting sensor unit 203 of the wireless device 201A is received by the light receiving sensor unit 202 of the wireless device 201B. On the other hand, light emitted from the light emitting sensor unit 203 of the wireless device 201B is received by the light receiving sensor unit 202 of the wireless device 201A.
（受光センサ部２０２）
　受光センサ部２０２は、対向する無線装置２０１Ｂの発光センサ部２０３が発光した光を受光し、受光したことを無線部２０４に信号を出力する構成部であり、例えば、フォトトランジスタで構成される。
　この受光センサ部２０２は、電池２０７から受光スイッチ部２０５を経由して供給される電力で、受光や信号出力の動作を行う。そのため、受光スイッチ部２０５がオフのときは電力が供給されないため動作しない。 (Light receiving sensor unit 202)
The light receiving sensor unit 202 is a component that receives light emitted from the light emitting sensor unit 203 of the opposing wireless device 201B and outputs a signal to the wireless unit 204 that the light is received, and is configured by a phototransistor, for example.
The light receiving sensor unit 202 performs light reception and signal output operations with power supplied from the battery 207 via the light receiving switch unit 205. For this reason, when the light receiving switch unit 205 is off, no power is supplied, so that it does not operate.
（発光センサ部２０３）
　発光センサ部２０３は、光を出射する構成部であり、例えば、発光ダイオードで構成される。この発光センサ部２０３が発光した光は、対向する無線装置２０１Ｂの受光センサ部２０２が受光する。
　この発光センサ部２０３は、電池２０７から発光スイッチ部２０６を経由して供給される電力で、発光の動作を行う。そのため、発光スイッチ部２０６がオフのときは電力が供給されないため動作しない。 (Light emitting sensor unit 203)
The light emission sensor unit 203 is a component that emits light, and is formed of, for example, a light emitting diode. The light emitted from the light emitting sensor unit 203 is received by the light receiving sensor unit 202 of the opposing wireless device 201B.
The light emission sensor unit 203 performs a light emission operation with electric power supplied from the battery 207 via the light emission switch unit 206. Therefore, when the light emission switch unit 206 is off, no power is supplied, so that the operation is not performed.
（無線部２０４）
　無線部２０４は、無線ネットワークと接続するインタフェースであり、アクセスポイント１０３（図１）を介して、対向する無線装置２０１Ｂと、外部装置１０４（図１）と無線通信でデータの送受信を行う。
　この無線部２０４は、制御部２０８が後記するパケットフォーマットに基づき作成したパケットをアクセスポイント１０３に送信する。また、無線部２０４は、受信したパケットを制御部２０８に出力する。 (Wireless unit 204)
The wireless unit 204 is an interface connected to a wireless network, and transmits and receives data to and from the wireless device 201B and the external device 104 (FIG. 1) through the access point 103 (FIG. 1) by wireless communication.
The wireless unit 204 transmits a packet created by the control unit 208 based on a packet format described later to the access point 103. In addition, the wireless unit 204 outputs the received packet to the control unit 208.
（受光スイッチ部２０５）
　受光スイッチ部２０５は、制御部２０８からの指示に従ってＯＮ／ＯＦＦを切り替え、電池２０７から受光センサ部２０２への電力の供給／遮断を切り替える。 (Light receiving switch unit 205)
The light reception switch unit 205 switches ON / OFF according to an instruction from the control unit 208, and switches supply / cutoff of power from the battery 207 to the light reception sensor unit 202.
（発光スイッチ部２０６）
　発光スイッチ部２０６は、制御部２０８からの指示に従ってＯＮ／ＯＦＦを切り替え、電池２０７から発光センサ部２０３への電力の供給／遮断を切り替える。この発光センサ部２０３の発光の制御は、制御部２０８により、発光スイッチ部２０６がＯＮ／ＯＦＦ制御されることで行われる。 (Light emission switch unit 206)
The light emission switch unit 206 switches ON / OFF according to an instruction from the control unit 208 and switches supply / cut-off of power from the battery 207 to the light emission sensor unit 203. The light emission control of the light emission sensor unit 203 is performed by the control unit 208 performing ON / OFF control of the light emission switch unit 206.
（電池２０７）
　電池２０７は、１次電池であり、保守期間毎に定期的に交換される。電池２０７は、受光スイッチ部２０５を介して受光センサ部２０２と、発光スイッチ部２０６を介して発光センサ部２０３と、無線部２０４とに電気的に接続され、各構成部が駆動するために必要な電力を供給する。また、電池２０７は、制御部２０８が動作するために必要な電力を供給する。 (Battery 207)
The battery 207 is a primary battery and is periodically replaced every maintenance period. The battery 207 is electrically connected to the light receiving sensor unit 202 through the light receiving switch unit 205, the light emitting sensor unit 203 through the light emitting switch unit 206, and the wireless unit 204, and is necessary for each component to be driven. To supply power. The battery 207 supplies electric power necessary for the control unit 208 to operate.
（電池残量検出部２０９）
　電池残量検出部２０９は、電池２０７の電池残量値を検出する構成部であり、例えば、開放端電圧を測定したり、所定の定格電流を流したときの電圧を測定したりして、電池残量を検出する。この電池残量検出部２０９は、制御部２０８の要求に応じて、電池２０７の電池残量値を検出し、制御部２０８に出力する。 (Battery remaining amount detection unit 209)
The remaining battery level detection unit 209 is a component that detects the remaining battery level value of the battery 207, for example, by measuring the open-circuit voltage or by measuring the voltage when a predetermined rated current is passed, Detect battery level. This battery remaining amount detection unit 209 detects the battery remaining amount value of the battery 207 in response to a request from the control unit 208 and outputs the detected value to the control unit 208.
（タイマ２１０）
　タイマ２１０は、所定時間を計測する構成部である。
　このタイマ２１０は、例えば、制御部２０８の要求に応じて、所定の値からデクリメントを開始し、値が０となったときに、制御部２０８に通知する。 (Timer 210)
The timer 210 is a component that measures a predetermined time.
For example, the timer 210 starts decrementing from a predetermined value in response to a request from the control unit 208, and notifies the control unit 208 when the value becomes zero.
（制御部２０８）
　制御部２０８は、無線装置２０１Ａの全体を制御する構成部であり、例えば、ＣＰＵ（Central Processing Unit）で構成される。制御部２０８（ＣＰＵ）が不図示の記憶部に格納されるプログラムを展開し、実行することによって実現される。 (Control unit 208)
The control unit 208 is a configuration unit that controls the entire radio apparatus 201A, and includes, for example, a CPU (Central Processing Unit). This is realized by the control unit 208 (CPU) developing and executing a program stored in a storage unit (not shown).
　この制御部２０８は、無線部２０４を介して、対向する無線装置２０１Ｂと無線通信を行い、送信されるデータに基づき、発光側無線機または受光側無線機となるように機能を切り替える。第１の実施形態において、一対の無線装置２０１（２０１Ａ、２０１Ｂ）は、受光側無線機が「主無線機」、他方の発光側無線機が「従無線機」という主従関係が成立するように動作し、受光側無線機の制御部２０８が発光側無線機の制御部２０８に指示を行うこととする。
　この第１の実施形態に係る無線装置２０１（２０１Ａ、２０１Ｂ）は、電池２０７の電池残量値に基づき、発光側無線機と受光側無線機との機能（主従関係）を切り替える。 The control unit 208 performs wireless communication with the opposing wireless device 201B via the wireless unit 204, and switches functions so as to be a light emitting side wireless device or a light receiving side wireless device based on transmitted data. In the first embodiment, the pair of wireless devices 201 (201A, 201B) is configured such that a master-slave relationship is established in which the light-receiving side wireless device is “master wireless device” and the other light-emitting side wireless device is “slave wireless device”. It is assumed that the control unit 208 of the light receiving side wireless device operates and instructs the control unit 208 of the light emitting side wireless device.
The wireless device 201 (201A, 201B) according to the first embodiment switches the function (master-slave relationship) between the light emitting side wireless device and the light receiving side wireless device based on the battery remaining value of the battery 207.
　また、制御部２０８は、電池残量判定機能を有し、所定のタイミングで電池２０７の電池残量値を取得する。
　この制御部２０８は、例えば、タイマ２１０に所定時間を計測させ、タイマ２１０からの所定時間となった旨の通知を受けて、電池残量検出部２０９から電池２０７の電池残量値を取得する。 Further, the control unit 208 has a battery remaining capacity determination function, and acquires the battery remaining value of the battery 207 at a predetermined timing.
For example, the control unit 208 causes the timer 210 to measure a predetermined time, receives a notification from the timer 210 that the predetermined time is reached, and acquires the remaining battery level value of the battery 207 from the remaining battery level detection unit 209. .
　ここで、制御部２０８は、受光側無線機として機能する場合、受光スイッチ部２０５をオンにして受光センサ部２０２への電力供給を行う一方、発光スイッチ部２０６をオフにして発光センサ部２０３ヘの電力供給を停止する（省電力を行う）。反対に、制御部２０８は、発光側無線機として機能する場合、発光スイッチ部２０６をオンにして発光センサ部２０３ヘの電力供給を行う一方、受光スイッチ部２０５をオフにして受光センサ部２０２への電力供給を停止する（省電力を行う）。 Here, when the control unit 208 functions as a light receiving side radio, the light receiving switch unit 205 is turned on to supply power to the light receiving sensor unit 202, while the light emitting switch unit 206 is turned off to the light emitting sensor unit 203. Stop the power supply (to save power). On the other hand, when the control unit 208 functions as a light emitting side radio, the light emitting switch unit 206 is turned on to supply power to the light emitting sensor unit 203, while the light receiving switch unit 205 is turned off to the light receiving sensor unit 202. Stop the power supply (to save power).
≪パケットフォーマット≫
　次に、図３～図６を用いて、検出システム２００で無線通信に用いるパケットのフォーマットについて説明する。図３は電池残量確認パケット３００のフォーマット、図４は電池残量確認ＡＣＫパケット４００のフォーマット、図５は状態変更パケット５００のフォーマット、図６は状態変更ＡＣＫパケット６００のフォーマットを示す。これらのパケットは、すべて無線通信に必要なヘッダ（３０１、４０１、５０１、６０１）を有するが、これらの具体的なフィールドについてはそれぞれの無線通信方式のフォーマットに従う。 ≪Packet format≫
Next, a packet format used for wireless communication in the detection system 200 will be described with reference to FIGS. 3 shows the format of the remaining battery level confirmation packet 300, FIG. 4 shows the format of the remaining battery level confirmation ACK packet 400, FIG. 5 shows the format of the status change packet 500, and FIG. 6 shows the format of the status change ACK packet 600. These packets all have headers (301, 401, 501 and 601) necessary for wireless communication, but these specific fields follow the format of each wireless communication system.
（電池残量確認パケット３００）
　図３は電池残量確認パケット３００のフォーマットを示す。
　電池残量確認パケット３００は、受光側無線機から発光側無線機に送られるパケットであり、少なくとも、ヘッダ３０１と、パケットＩＤ３０２と、送信元アドレス３０３と、宛先アドレス３０４とで構成される。
　パケットＩＤ３０２にはパケットを識別する情報が格納され、例えば、電池残量確認パケット３００を示す「１」が格納される。送信元アドレス３０３には受光側無線機のＩＰアドレスが格納される。宛先アドレス３０４には発光側無線機のＩＰアドレスを格納する。 (Battery level check packet 300)
FIG. 3 shows a format of the battery remaining amount confirmation packet 300.
The battery remaining amount confirmation packet 300 is a packet sent from the light receiving side wireless device to the light emitting side wireless device, and includes at least a header 301, a packet ID 302, a transmission source address 303, and a destination address 304.
The packet ID 302 stores information for identifying the packet. For example, “1” indicating the battery remaining amount confirmation packet 300 is stored. The transmission source address 303 stores the IP address of the light receiving side radio. The destination address 304 stores the IP address of the light emitting side radio.
（電池残量確認ＡＣＫパケット４００）
　図４は電池残量確認ＡＣＫパケット４００のフォーマットを示す。
　電池残量確認ＡＣＫパケット４００は、受光側無線機から送信された電池残量確認パケット３００の応答信号（ＡＣＫ）として返信するパケットであり、少なくとも、ヘッダ４０１と、パケットＩＤ４０２と、送信元アドレス４０３と、宛先アドレス４０４と、電池残量４０５とで構成される。
　パケットＩＤ４０２にはパケットを識別する情報が格納され、例えば、電池残量確認ＡＣＫパケット４００を示す「２」が格納される。送信元アドレス４０３には発光側無線機のＩＰアドレスが格納される。宛先アドレス３０４には受光側無線機のＩＰアドレスを格納する。電池残量４０５には電池２０７の電池残量値が格納される。 (Battery level confirmation ACK packet 400)
FIG. 4 shows the format of the battery remaining amount confirmation ACK packet 400.
The battery remaining amount confirmation ACK packet 400 is a packet returned as a response signal (ACK) of the battery remaining amount confirmation packet 300 transmitted from the light receiving side wireless device, and includes at least a header 401, a packet ID 402, and a transmission source address 403. And a destination address 404 and a remaining battery level 405.
The packet ID 402 stores information for identifying the packet. For example, “2” indicating the battery remaining amount confirmation ACK packet 400 is stored. The source address 403 stores the IP address of the light emitting side radio. The destination address 304 stores the IP address of the light receiving side radio. A battery remaining amount value of the battery 207 is stored in the battery remaining amount 405.
（状態変更パケット５００）
　図５は状態変更パケット５００のフォーマットを示す。
　状態変更パケット５００は、「主無線機」である受光側無線機から「従無線機」である発光側無線機に送信される、受光側無線機と発光側無線機との機能（主従関係）を切り替える依頼をするためのパケットである。この状態変更パケット５００は、少なくとも、ヘッダ５０１と、パケットＩＤ５０２と、送信元アドレス５０３と、宛先アドレス５０４とで構成される。
　パケットＩＤ５０２にはパケットを識別する情報が格納され、例えば、状態変更パケット５００を示す「３」が格納される。送信元アドレス３０３には「主無線機」である受光側無線機のＩＰアドレスが格納される。宛先アドレス３０４には「従無線機」である発光側無線機のＩＰアドレスを格納する。 (Status change packet 500)
FIG. 5 shows the format of the state change packet 500.
The state change packet 500 is transmitted from the light receiving side wireless device that is the “master wireless device” to the light emitting side wireless device that is the “slave wireless device”, and functions (master-slave relationship) between the light receiving side wireless device and the light emitting side wireless device. This is a packet for requesting switching. This state change packet 500 includes at least a header 501, a packet ID 502, a transmission source address 503, and a destination address 504.
The packet ID 502 stores information for identifying the packet. For example, “3” indicating the state change packet 500 is stored. The transmission source address 303 stores the IP address of the light receiving side wireless device that is the “main wireless device”. The destination address 304 stores the IP address of the light emitting side wireless device that is the “slave wireless device”.
（状態変更ＡＣＫパケット６００）
　図６は状態変更ＡＣＫパケット６００のフォーマットを示す。
　状態変更ＡＣＫパケット６００は、状態変更パケット５００の応答信号（ＡＣＫ）として返信するパケットであり、「従無線機」である発光側無線機から「主無線機」である受光側無線機に送信される。この状態変更ＡＣＫパケット６００は、少なくとも、ヘッダ６０１と、パケットＩＤ６０２と、送信元アドレス６０３と、宛先アドレス６０４とで構成される。
　パケットＩＤ６０２にはパケットを識別する情報が格納され、例えば、状態変更ＡＣＫパケット６００を示す「４」が格納される。送信元アドレス３０３には「従無線機」である発光側無線機のＩＰアドレスが格納される。宛先アドレス３０４には「主無線機」である受光側無線機のＩＰアドレスを格納する。 (Status change ACK packet 600)
FIG. 6 shows the format of the state change ACK packet 600.
The state change ACK packet 600 is a packet that is returned as a response signal (ACK) of the state change packet 500, and is transmitted from the light emitting side radio that is the “slave radio” to the light receiving side radio that is the “main radio”. The This state change ACK packet 600 includes at least a header 601, a packet ID 602, a transmission source address 603, and a destination address 604.
The packet ID 602 stores information for identifying the packet. For example, “4” indicating the state change ACK packet 600 is stored. The transmission source address 303 stores the IP address of the light emitting side radio device that is the “slave radio device”. The destination address 304 stores the IP address of the light receiving side wireless device that is the “main wireless device”.
≪タイムチャート（第１の実施形態）≫
　次に、無線装置２０１の切替処理について説明する。
　図７は、「主無線機」である受光側無線機として機能する無線装置２０１Ａの処理動作と、「従無線機」である発光側無線機として機能する無線装置２０１Ｂの処理動作とを示すタイムチャートである。
　この図７に示すタイムチャートは、まず、無線装置２０１Ａが「主無線機」である受光側無線機として機能している状態であり、無線装置２０１Ｂが「従無線機」である発光側無線機として機能している状態である。ここで、図７ではアクセスポイント１０３の処理は省略した。
　以下、無線装置２０１Ａが「主無線機」である受光側無線機として機能している場合、受光側の無線装置２０１Ａとし、「従無線機」である発光側無線機として機能している場
合、発光側の無線装置２０１Ａと称する。 ≪Time chart (first embodiment) ≫
Next, switching processing of the wireless device 201 will be described.
FIG. 7 is a time chart showing the processing operation of the wireless device 201A that functions as the light receiving side wireless device that is the “primary wireless device” and the processing operation of the wireless device 201B that functions as the light emitting side wireless device that is the “secondary wireless device”. It is a chart.
In the time chart shown in FIG. 7, first, the wireless device 201A is functioning as a light receiving side wireless device which is a “primary wireless device”, and the light emitting side wireless device where the wireless device 201B is a “secondary wireless device”. Is functioning as Here, the processing of the access point 103 is omitted in FIG.
Hereinafter, when the wireless device 201A functions as a light receiving side wireless device that is a “primary wireless device”, as a light receiving side wireless device 201A, and when it functions as a light emitting side wireless device that is a “secondary wireless device”, This is referred to as a light emitting side wireless device 201A.
（無線装置２０１Ａ：受光側無線機の処理）
　まず、受光側の無線装置２０１Ａの制御部２０８は、タイマ２１０にカウントダウンを開始させる（ステップＳ１０１）。その後、タイマ２１０からカウントが０になった（ステップＳ１０２）ことの通知を受けた制御部２０８は、宛先アドレス３０４に無線装置２０１Ｂのアドレスを格納して、電池残量確認パケット３００を作成する。
　そして、無線部２０４が電池残量確認パケット３００をアクセスポイント１０３に送信する（ステップＳ１０３）。これにより、アクセスポイント１０３経由で無線装置２０１Ｂに電池残量確認パケット３００が送信される。 (Wireless device 201A: process of light receiving side wireless device)
First, the control unit 208 of the wireless device 201A on the light receiving side causes the timer 210 to start counting down (step S101). After that, the control unit 208 that has received the notification that the count has reached 0 from the timer 210 (step S102) stores the address of the wireless device 201B in the destination address 304, and creates the battery remaining amount confirmation packet 300.
Then, the wireless unit 204 transmits a battery remaining amount confirmation packet 300 to the access point 103 (step S103). As a result, the battery remaining amount confirmation packet 300 is transmitted to the wireless device 201B via the access point 103.
（無線装置２０１Ｂ：発光側無線機の処理）
　発光側の無線装置２０１Ｂは、無線部２０４が電池残量確認パケット３００を受信し（ステップＳ１０４）、制御部２０８が電池残量確認パケット３００を確認し、電池残量検出部２０９に電池残量の検出を指示する。これにより、電池残量検出部２０９は電池２０７の電池残量を検出する（ステップＳ１０５）。以下、電池残量Ｂと称する。 (Wireless device 201B: Processing of light emitting side wireless device)
In the wireless device 201B on the light emitting side, the wireless unit 204 receives the battery remaining amount confirmation packet 300 (step S104), the control unit 208 confirms the battery remaining amount confirmation packet 300, and the battery remaining amount detecting unit 209 receives the remaining battery amount. Instruct the detection of. Thereby, the battery remaining amount detection part 209 detects the battery remaining amount of the battery 207 (step S105). Hereinafter, the battery remaining amount B is referred to.
　制御部２０８は、電池残量検出部２０９が検出した電池残量Ｂを電池残量４０５として格納して、電池残量確認ＡＣＫパケット４００を作成する。
　そして、無線部２０４が電池残量確認ＡＣＫパケット４００をアクセスポイント１０３に送信する（ステップＳ１０６）。これにより、アクセスポイント１０３経由で無線装置２０１Ａに電池残量確認ＡＣＫパケット４００が送信される。 The control unit 208 stores the remaining battery level B detected by the remaining battery level detection unit 209 as the remaining battery level 405 and creates the remaining battery level confirmation ACK packet 400.
Then, the wireless unit 204 transmits a battery remaining amount confirmation ACK packet 400 to the access point 103 (step S106). As a result, the battery remaining amount confirmation ACK packet 400 is transmitted to the wireless device 201A via the access point 103.
（無線装置２０１Ａ：受光側無線機の処理）
　受光側の無線装置２０１Ａは、無線部２０４が電池残量確認ＡＣＫパケット４００を受信し（ステップＳ１０７）、制御部２０８が電池残量確認ＡＣＫパケット４００に格納された電池残量Ｂを取得する（ステップＳ１０８）。
　そして、制御部２０８は、電池残量検出部２０９に電池残量の検出を指示する。これにより、電池残量検出部２０９は自身の電池２０７の電池残量を検出する（ステップＳ１０９）。以下、電池残量Ａと称する。 (Wireless device 201A: process of light receiving side wireless device)
In the wireless device 201A on the light receiving side, the wireless unit 204 receives the battery remaining amount confirmation ACK packet 400 (step S107), and the control unit 208 acquires the battery remaining amount B stored in the battery remaining amount confirmation ACK packet 400 ( Step S108).
Then, the control unit 208 instructs the remaining battery level detection unit 209 to detect the remaining battery level. Thereby, the battery remaining charge detection part 209 detects the battery remaining charge of the own battery 207 (step S109). Hereinafter, the battery remaining amount A is referred to.
　次に、制御部２０８は、電池残量Ａと電池残量Ｂとの比較判定を行う（電池残量Ａ＞電池残量Ｂ？）（ステップＳ１１０）。
　ステップＳ１１０の判定の結果、電池残量Ｂの方が多ければ（ステップＳ１１０，Ｎｏ）、制御部２０８は切替処理を一旦終了し、再び切替処理を開始して、ステップＳ１０１を実行する。 Next, the control unit 208 compares and determines the remaining battery level A and the remaining battery level B (remaining battery level A> remaining battery level B?) (Step S110).
As a result of the determination in step S110, if the remaining battery charge B is greater (No in step S110), the control unit 208 once ends the switching process, starts the switching process again, and executes step S101.
　一方、ステップＳ１１０の判定の結果、電池残量Ａの方が多ければ（ステップＳ１１０，Ｙｅｓ）、制御部２０８は状態変更パケット５００を作成する。そして、無線部２０４が状態変更パケット５００をアクセスポイント１０３に送信する（ステップＳ１１１）。これにより、アクセスポイント１０３経由で無線装置２０１Ｂに状態変更パケット５００が送信される。 On the other hand, as a result of the determination in step S110, if the remaining battery level A is larger (step S110, Yes), the control unit 208 creates the state change packet 500. Then, the wireless unit 204 transmits the state change packet 500 to the access point 103 (step S111). As a result, the state change packet 500 is transmitted to the wireless device 201B via the access point 103.
（無線装置２０１Ｂ：発光側無線機の処理）
　発光側の無線装置２０１Ｂは、無線部２０４が状態変更パケット５００を受信し（ステップＳ１１２）、制御部２０８が状態変更パケット５００を確認する。
　そして、発光側の無線装置２０１Ｂの制御部２０８は、「主無線機」である受光側無線機として機能するように切り替えて、状態変更を行う（発光側→受光側，ステップＳ１１３）。これにより、無線装置２０１Ｂは、発光側無線機から受光側無線機に切り替わる。 (Wireless device 201B: Processing of light emitting side wireless device)
In the wireless device 201B on the light emitting side, the wireless unit 204 receives the state change packet 500 (step S112), and the control unit 208 confirms the state change packet 500.
Then, the control unit 208 of the light emitting side wireless device 201B switches to function as a light receiving side wireless device that is a “main wireless device”, and changes the state (light emitting side → light receiving side, step S113). As a result, the wireless device 201B is switched from the light emitting side wireless device to the light receiving side wireless device.
（無線装置２０１Ｂ：受光側無線機の処理）
　切り替え後、制御部２０８は状態変更ＡＣＫパケット６００を作成する。
　そして、無線部２０４が状態変更ＡＣＫパケット６００をアクセスポイント１０３に送信する（ステップＳ１１４）。これにより、アクセスポイント１０３経由で無線装置２０１Ａに状態変更ＡＣＫパケット６００が送信される。 (Wireless device 201B: process of light receiving side wireless device)
After switching, control unit 208 creates state change ACK packet 600.
Then, the wireless unit 204 transmits the state change ACK packet 600 to the access point 103 (step S114). As a result, the state change ACK packet 600 is transmitted to the wireless device 201A via the access point 103.
（無線装置２０１Ａ：受光側無線機の処理）
　まだこの時点で受光側無線機として機能している無線装置２０１Ａは、無線部２０４が状態変更ＡＣＫパケット６００を受信し（ステップＳ１１５）、制御部２０８が状態変更ＡＣＫパケット６００を確認する。
　そして、無線装置２０１Ａの制御部２０８は、「従無線機」である発光側無線機として機能するように切り替えて、状態変更を行う（受光側→発光側，ステップＳ１１６）。これにより、無線装置２０１Ａは、受光側無線機から発光側無線機に切り替わる。 (Wireless device 201A: process of light receiving side wireless device)
In radio apparatus 201A still functioning as a light receiving side radio at this time, radio section 204 receives state change ACK packet 600 (step S115), and control section 208 confirms state change ACK packet 600.
Then, the control unit 208 of the wireless device 201A switches to function as a light emitting side wireless device that is a “slave wireless device” and changes the state (light receiving side → light emitting side, step S116). As a result, the wireless device 201A is switched from the light receiving side wireless device to the light emitting side wireless device.
（無線装置２０１Ａ：発光側無線機の処理）
　そして、発光側の無線装置２０１Ａの制御部２０８は切替処理を終了する。 (Wireless device 201A: Processing of light emitting side wireless device)
Then, the control unit 208 of the light emitting side radio apparatus 201A ends the switching process.
（無線装置２０１Ｂ：受光側無線機の処理）
　一方、受光側の無線装置２０１ＢはステップＳ１１４の後、切替処理を一旦終了し、再び切替処理を開始して、ステップＳ１０１を実行する。
　以上のように、無線装置２０１は、繰り返し、切替処理を行う。 (Wireless device 201B: process of light receiving side wireless device)
On the other hand, after step S114, the wireless device 201B on the light receiving side once ends the switching process, starts the switching process again, and executes step S101.
As described above, the wireless device 201 repeatedly performs the switching process.
（効果）
　以上のように、第１の実施形態において、受光センサ部２０２および発光センサ部２０３を備えた一対の無線装置２０１（２０１Ａ、２０１Ｂ）は、電池残量値が大きい方の無線装置２０１が発光側無線機として機能し、発光する。その後、受光側無線機として機能する無線装置２０１との電池残量値の大小が逆転した場合、互いの無線装置２０１が機能していた受光側無線機と発光側無線機との機能を切り替える。これにより、発光側無線機として機能する方が一般的に消費電力が高いことによる偏った電池の消耗を避けることができ、検出システム２００全体の稼働時間を延ばし、連続運用を可能にすることが期待できる。 (effect)
As described above, in the first embodiment, the pair of wireless devices 201 (201 </ b> A and 201 </ b> B) including the light receiving sensor unit 202 and the light emitting sensor unit 203 is configured such that the wireless device 201 having the larger battery remaining value is the light emitting side. Functions as a radio and emits light. After that, when the battery remaining value of the wireless device 201 functioning as the light receiving side wireless device is reversed, the functions of the light receiving side wireless device and the light emitting side wireless device that each wireless device 201 was functioning are switched. As a result, it is possible to avoid biased battery consumption due to higher power consumption when functioning as a light-emitting side radio, generally extending the operating time of the entire detection system 200 and enabling continuous operation. I can expect.
≪第２の実施形態≫
　第２の実施形態に係る検出システムは、第１の実施形態に係る検出システム２００と同様のため、説明を省略する。
　第１の実施形態に係る無線装置２０１Ａは、対向する無線装置２０１Ｂと無線通信を行い、発光側無線機または受光側無線機となるように機能（主従関係）を切り替えるというものである。この第２の実施形態は、この切り替えを、外部装置１０４からのセンサ切替指示に応じて行うこともできるというものである。 << Second Embodiment >>
Since the detection system according to the second embodiment is similar to the detection system 200 according to the first embodiment, the description thereof is omitted.
The wireless device 201A according to the first embodiment performs wireless communication with the opposing wireless device 201B, and switches functions (master-slave relationship) so as to be a light emitting side wireless device or a light receiving side wireless device. In the second embodiment, this switching can also be performed according to a sensor switching instruction from the external device 104.
　図８に示すアクセスポイント２１０３（図１のアクセスポイント１０３に相当）は、外部装置１０４から送信されるセンサ切替指示に応じて、無線装置２２０１（２２０１Ａ、２２０１Ｂ）（図１の無線装置２０１Ａ、２０１Ｂに該当）それぞれに状態変更パケット５００（図５）を送信して、「主無線機」である受光側無線機としての機能と、「従無線機」である発光側無線機としての機能とを切り替えさせる。これにより、無線装置２２０１Ａと無線装置２２０１Ｂとの主従関係が切り替わる。 An access point 2103 (corresponding to the access point 103 in FIG. 1) shown in FIG. 8 responds to a sensor switching instruction transmitted from the external device 104 by wireless devices 2201 (2201A and 2201B) ( wireless devices 201A and 201B in FIG. 1). Correspond to each of them) and transmit the state change packet 500 (FIG. 5) to each of the functions as the light receiving side radio device that is the “primary radio” and the function as the light emitting side radio device that is the “secondary radio”. Let them switch. As a result, the master-slave relationship between the wireless device 2201A and the wireless device 2201B is switched.
　このセンサ切替指示は、例えば、無線装置２２０１（２２０１Ａ、２２０１Ｂ）から送信されるセンサ検出信号に基づき、外部装置１０４がセンサ異常と判定したときに送信される。例えば、発光指示を送信したものの、受光センサ部２０２が受光していない場合、発光センサ部２０３から受光センサ部２０２までの光路上にゴミ等の障害物があることにより受光できないというセンサ異常が発生する場合がある。 The sensor switching instruction is transmitted when the external device 104 determines that the sensor is abnormal based on a sensor detection signal transmitted from the wireless device 2201 (2201A, 2201B), for example. For example, when a light emission instruction is transmitted but the light receiving sensor unit 202 is not receiving light, a sensor abnormality that light cannot be received due to an obstacle such as dust on the optical path from the light emitting sensor unit 203 to the light receiving sensor unit 202 occurs. There is a case.
（アクセスポイント２１０３）
　図８は、第２の実施形態に係るアクセスポイントの構成図である。
　アクセスポイント２１０３は、各無線装置２２０１と外部装置１０４との間を無線通信可能に接続する中継装置である。このアクセスポイント２１０３は、各無線装置２２０１から送信されるすべてのパケットを一旦受信し、パケットの宛先アドレスに転送する。一方、外部装置１０４から送信されるパケットを一旦受信し、パケットの宛先アドレスに該当する無線装置２２０１に転送する。 (Access point 2103)
FIG. 8 is a configuration diagram of an access point according to the second embodiment.
The access point 2103 is a relay device that connects each wireless device 2201 and the external device 104 so that wireless communication is possible. This access point 2103 once receives all the packets transmitted from each wireless device 2201 and transfers them to the destination address of the packet. On the other hand, a packet transmitted from the external device 104 is once received and transferred to the wireless device 2201 corresponding to the destination address of the packet.
　このアクセスポイント２１０３は、制御部７０１と、記憶部７０２と、無線部７０３とを備える。
　制御部７０１は、アクセスポイント２１０３の全体を制御する構成部であり、例えば、ＣＰＵで構成される。アクセスポイント２１０３（ＣＰＵ）が記憶部７０２に格納されるプログラムを展開し、実行することによって実現される。
　記憶部７０２は、データやプログラムを記憶する構成部であり、例えば、ＨＤＤ（Hard Disc Drive）、ＲＡＭ（Random Access Memory）等の記憶手段である。
　無線部７０３は、無線ネットワークと接続するインタフェースであり、各無線装置２２０１（図１の無線装置２０１に該当）および外部装置１０４（図１）と無線通信でデータの送受信を行う。 The access point 2103 includes a control unit 701, a storage unit 702, and a wireless unit 703.
The control unit 701 is a component that controls the entire access point 2103, and is configured by a CPU, for example. This is realized by the access point 2103 (CPU) developing and executing a program stored in the storage unit 702.
The storage unit 702 is a component that stores data and programs, and is a storage unit such as an HDD (Hard Disc Drive) or a RAM (Random Access Memory).
The wireless unit 703 is an interface connected to the wireless network, and transmits and receives data to and from each wireless device 2201 (corresponding to the wireless device 201 in FIG. 1) and the external device 104 (FIG. 1).
　第２の実施形態に係るアクセスポイント２１０３は、３つの機能を有する。
　このアクセスポイント２１０３は、（１）状態変更パケット５００（図５）を無線装置２２０１（２２０１Ａ、２２０１Ｂ）双方に送信して、主従関係を切り替えさせる機能と、（２）センサ異常が解消したか否かを確認するための再確認要求を外部装置１０４に送信する機能と、（３）外部装置１０４からの再確認要求の応答内容が「センサ異常が解消した」であれば、切り替えた後の主従関係のままにする一方、「センサ異常が解消しなかった」であれば、再度状態変更パケット５００を無線装置２２０１（２２０１Ａ、２２０１Ｂ）双方に送信して、切り替える前の主従関係に戻す機能と、を有する。 The access point 2103 according to the second embodiment has three functions.
This access point 2103 has (1) a function for switching the master-slave relationship by transmitting the state change packet 500 (FIG. 5) to both wireless devices 2201 (2201A, 2201B), and (2) whether or not the sensor abnormality has been resolved. And (3) if the response content of the reconfirmation request from the external device 104 is “sensor error has been resolved”, the master / slave after switching While maintaining the relationship, if “sensor abnormality has not been resolved”, the function of transmitting the state change packet 500 again to both wireless devices 2201 (2201A, 2201B) and returning to the master-slave relationship before switching, Have
≪タイムチャート（第２の実施形態）≫
　次に、図９を用いて、無線装置２２０１とアクセスポイント２１０３との切替処理動作について説明する。
　まず、第２の実施形態に係るアクセスポイント２１０３は、外部装置１０４（図１）からセンサ切替指示を受信したとき、切替処理を実行する。
　このとき、無線装置２２０１Ａは、「主無線機」である受光側無線機として機能しており、無線装置２２０１Ｂは、「従無線機」である発光側無線機として機能している。 ≪Time chart (second embodiment) ≫
Next, the switching processing operation between the wireless device 2201 and the access point 2103 will be described with reference to FIG.
First, the access point 2103 according to the second embodiment executes a switching process when receiving a sensor switching instruction from the external device 104 (FIG. 1).
At this time, the wireless device 2201A functions as a light receiving side wireless device that is a “primary wireless device”, and the wireless device 2201B functions as a light emitting side wireless device that is a “secondary wireless device”.
（アクセスポイント２１０３の処理）
　まず、アクセスポイント２１０３は、制御部７０１が状態変更パケット５００（図５）を作成し、無線部７０３が発光側の無線装置２２０１Ｂに状態変更パケット５００を送信する（ステップＳ２０１）。 (Processing of access point 2103)
First, in the access point 2103, the control unit 701 creates the state change packet 500 (FIG. 5), and the wireless unit 703 transmits the state change packet 500 to the light emitting side wireless device 2201B (step S201).
（無線装置２２０１Ｂ：発光側無線機の処理）
　発光側の無線装置２２０１Ｂは、無線部２０４が状態変更パケット５００を受信し（ステップＳ２０２）、制御部２０８が状態変更パケット５００を確認する。
　そして、発光側の無線装置２２０１Ｂの制御部２０８は、「主無線機」である受光側無線機として機能するように切り替えて、状態変更を行う（発光側→受光側，ステップＳ２０３）。これにより、無線装置２２０１Ｂは、発光側無線機から受光側無線機に切り替わる。 (Wireless device 2201B: Processing of light emitting side wireless device)
In the wireless device 2201B on the light emitting side, the wireless unit 204 receives the state change packet 500 (step S202), and the control unit 208 confirms the state change packet 500.
Then, the control unit 208 of the light emitting side wireless device 2201B switches to function as the light receiving side wireless device that is the “main wireless device”, and changes the state (light emitting side → light receiving side, step S203). As a result, the wireless device 2201B switches from the light emitting side wireless device to the light receiving side wireless device.
（無線装置２２０１Ｂ：受光側無線機の処理）
　切り替え後、制御部２０８は状態変更ＡＣＫパケット６００（図６）を作成する。
　そして、無線部２０４が状態変更ＡＣＫパケット６００をアクセスポイント２１０３に送信する（ステップＳ２０４）。 (Wireless device 2201B: Processing of light receiving side wireless device)
After switching, the control unit 208 creates a state change ACK packet 600 (FIG. 6).
Radio section 204 transmits state change ACK packet 600 to access point 2103 (step S204).
（アクセスポイント２１０３の処理）
　アクセスポイント２１０３は、無線部７０３が状態変更ＡＣＫパケット６００を受信し（ステップＳ２０５）、制御部７０１が状態変更ＡＣＫパケット６００を確認する。
　制御部７０１は、状態変更パケット５００を作成し、もう一方の無線装置２２０１である無線装置２２０１Ａに状態変更パケット５００を送信する（ステップＳ２０６）。 (Processing of access point 2103)
In the access point 2103, the wireless unit 703 receives the state change ACK packet 600 (step S205), and the control unit 701 confirms the state change ACK packet 600.
The control unit 701 creates the state change packet 500 and transmits the state change packet 500 to the wireless device 2201A which is the other wireless device 2201 (step S206).
（無線装置２２０１Ａ：受光側無線機の処理）
　まだこの時点で受光側無線機として機能している無線装置２２０１Ａは、無線部２０４が状態変更ＡＣＫパケット６００を受信し（ステップＳ２０７）、制御部２０８が状態変更ＡＣＫパケット６００を確認する。
　そして、無線装置２２０１Ａの制御部２０８は、「従無線機」である発光側無線機として機能するように切り替えて、状態変更を行う（受光側→発光側，ステップＳ２０８）。これにより、無線装置２２０１Ａは、受光側無線機から発光側無線機に切り替わる。
　つまり、発光側無線機から受光側無線機に切り替わる無線装置２２０１Ｂの処理（ステップＳ２０３）と、受光側無線機から発光側無線機に切り替わる無線装置２２０１Ａの処理（ステップＳ２０８）とは、同時期に実行される。 (Wireless device 2201A: processing of light receiving side radio device)
In radio apparatus 2201A still functioning as a light receiving side radio at this time, radio section 204 receives state change ACK packet 600 (step S207), and control section 208 confirms state change ACK packet 600.
The control unit 208 of the wireless device 2201A switches to function as a light emitting side wireless device that is a “slave wireless device”, and changes the state (light receiving side → light emitting side, step S208). As a result, the wireless device 2201A switches from the light receiving side wireless device to the light emitting side wireless device.
That is, the processing of the wireless device 2201B for switching from the light emitting side wireless device to the light receiving side wireless device (step S203) and the processing of the wireless device 2201A for switching from the light receiving side wireless device to the light emitting side wireless device (step S208) are performed at the same time. Executed.
（無線装置２２０１Ａ：発光側無線機の処理）
　切り替え後、制御部２０８は状態変更ＡＣＫパケット６００を作成する。
　そして、無線部２０４が状態変更ＡＣＫパケット６００をアクセスポイント２１０３に送信する（ステップＳ２０９）。 (Wireless device 2201A: processing of light emitting side radio device)
After switching, control unit 208 creates state change ACK packet 600.
Radio section 204 transmits state change ACK packet 600 to access point 2103 (step S209).
（アクセスポイント２１０３の処理）
　アクセスポイント２１０３は、無線部７０３が状態変更ＡＣＫパケット６００を受信し（ステップＳ２１０）、制御部７０１が状態変更ＡＣＫパケット６００を確認する。
　そして、制御部７０１は、外部装置１０４（図１）にセンサ異常を解消したかを確認する。例えば、制御部７０１が所定の確認要求パケットを作成し、無線部７０３が外部装置１０４に確認要求パケットを送信する（ステップＳ２１１）。 (Processing of access point 2103)
In the access point 2103, the wireless unit 703 receives the state change ACK packet 600 (step S210), and the control unit 701 confirms the state change ACK packet 600.
Then, the control unit 701 confirms whether or not the sensor abnormality is resolved in the external device 104 (FIG. 1). For example, the control unit 701 creates a predetermined confirmation request packet, and the wireless unit 703 transmits the confirmation request packet to the external device 104 (step S211).
　その後、無線部７０３は、外部装置１０４から確認要求パケットに対する応答パケットを受信する（ステップＳ２１２）。制御部７０１は、この応答パケットの内容が「センサ異常が解消した」であるか否かを判定する（応答内容＝「センサ異常解消」？）（ステップＳ２１３）。
　この応答パケットの内容が「センサ異常が解消した」という場合（ステップＳ２１３，Ｙｅｓ）、切替処理を終了する。 Thereafter, the wireless unit 703 receives a response packet to the confirmation request packet from the external device 104 (step S212). The control unit 701 determines whether or not the content of the response packet is “the sensor abnormality has been resolved” (response content = “sensor abnormality eliminated”?) (Step S213).
When the content of the response packet indicates that “the sensor abnormality has been resolved” (step S213, Yes), the switching process is terminated.
　一方、応答パケットの内容が「センサ異常が解消しない」という場合（ステップＳ２１３，Ｎｏ）、アクセスポイント２１０３の制御部７０１は、再びステップＳ２０１～Ｓ２１０の処理を行い、主従関係を切り替える前の状態に戻す処理を行う。 On the other hand, when the content of the response packet indicates that “sensor abnormality is not resolved” (step S213, No), the control unit 701 of the access point 2103 performs the processing of steps S201 to S210 again to the state before switching the master-slave relationship. Perform processing to return.
（主従関係を切り替える前の状態に戻す処理）
　アクセスポイント２１０３の制御部７０１は、例えば、再びステップＳ２０１～Ｓ２１０の処理を行うことにより、無線装置２２０１Ａと無線装置２２０１Ｂとの主従関係が元に戻り、無線装置２２０１Ａが「主無線機」である受光側無線機として機能し、無線装置２２０１Ｂが「従無線機」である発光側無線機として機能する。 (Process to return to the state before switching master-slave relationship)
The control unit 701 of the access point 2103, for example, performs the processing of steps S201 to S210 again, so that the master-slave relationship between the wireless device 2201A and the wireless device 2201B is restored, and the wireless device 2201A is the “main wireless device”. It functions as a light receiving side wireless device, and the wireless device 2201B functions as a light emitting side wireless device that is a “slave wireless device”.
（効果）
　第２の実施形態において、発光センサ部２０３が発光しているにもかかわらず、受光センサ部２０２が受光していないことや、発光センサ部２０３から受光センサ部２０２までの光路上にゴミ等の障害物があることにより受光できないことというセンサ異常が発生した場合、無線装置２２０１Ａと無線装置２２０１Ｂとの主従関係を切り替えることで、別の光路に変わるため、そのセンサ異常を解消できる可能性がある。 (effect)
In the second embodiment, the light receiving sensor unit 202 does not receive light even though the light emitting sensor unit 203 emits light, or dust or the like is on the optical path from the light emitting sensor unit 203 to the light receiving sensor unit 202. When a sensor abnormality occurs such that light cannot be received due to an obstacle, switching between the master-slave relationship between the wireless device 2201A and the wireless device 2201B changes to a different optical path, so that the sensor abnormality may be eliminated. .
≪第３の実施形態≫
　第３の実施形態に係る検出システムは、第１の実施形態に係る検出システム２００と同様のため、説明を省略する。
　第２の実施形態に係る無線装置２２０１は、外部装置１０４からのセンサ切替指示に応じて発光側無線機または受光側無線機となるように機能（主従関係）を切り替えるというものである。この第３の実施形態は、この切り替えを、通信異常を検出した時に行うことができるというものである。 << Third Embodiment >>
Since the detection system according to the third embodiment is similar to the detection system 200 according to the first embodiment, the description thereof is omitted.
The wireless device 2201 according to the second embodiment switches functions (master-slave relationship) so as to be a light emitting side wireless device or a light receiving side wireless device in accordance with a sensor switching instruction from the external device 104. In the third embodiment, this switching can be performed when a communication abnormality is detected.
　無線装置３２０１は無線通信の送信出力を抑えることで消費電力量を低減させている。
　第３の実施形態における無線装置３２０１の動力源は、第１の実施形態に係る無線装置２０１、第２の実施形態に係る無線装置２２０１と同様に電池２０７である。第３の実施形態における無線装置３２０１は消費電力をさらに減らして、電池２０７の寿命を延ばすことで、さらに長時間の稼動を実現させることを目的とする。そこで、第３の実施形態に係る無線装置３２０１は、可能な限り無線通信の送信出力を抑えて通信を行う。 The wireless device 3201 reduces power consumption by suppressing the transmission output of wireless communication.
The power source of the wireless device 3201 in the third embodiment is the battery 207 as in the wireless device 201 according to the first embodiment and the wireless device 2201 according to the second embodiment. The wireless device 3201 according to the third embodiment is intended to realize longer operation by further reducing power consumption and extending the life of the battery 207. Therefore, the wireless device 3201 according to the third embodiment performs communication while suppressing the transmission output of wireless communication as much as possible.
　無線装置３２０１は、このような通信が正常に行えるように、無線通信中継装置であるアクセスポイント３１０３（図１のアクセスポイント１０３に相当）とパケット等の送受信を行って、送信出力値を可能な限り低くなるように調整して設定する。この設定された送信出力値を「最低限送信出力値」とする。 The wireless device 3201 can transmit and receive packets and the like by transmitting and receiving packets and the like with the access point 3103 (corresponding to the access point 103 in FIG. 1) that is a wireless communication relay device so that such communication can be normally performed. Adjust and set as low as possible. This set transmission output value is defined as “minimum transmission output value”.
　この最低限送信出力値で無線装置３２０１が通信を行うことで、送信時に必要な消費電力が低減するため、電池の寿命が延び、無線装置３２０１の稼働時間が長くなる。その一方、送信出力値が小さいため、外部（電磁波等）からの干渉に弱くなるという問題がある。この外部からの干渉により、無線装置３２０１とアクセスポイント３１０３との間で通信障害が発生する場合がある。 Since the wireless device 3201 performs communication with this minimum transmission output value, the power consumption required for transmission is reduced, so that the battery life is extended and the operating time of the wireless device 3201 is increased. On the other hand, since the transmission output value is small, there is a problem that the transmission output value is weak against interference from the outside (electromagnetic wave or the like). A communication failure may occur between the wireless device 3201 and the access point 3103 due to this external interference.
　そこで、無線装置３２０１は、通常は最低限送信出力値で通信を行うが、外部から干渉を受けて通信障害が発生した場合、一旦、最低限送信出力値より大きくする。これにより、変更後の送信出力値で出力される電波（所望波）が、（外部からの）干渉波の影響を受けない程度に大きくなった（所望波の方が支配的になった）とき、無線装置３２０１とアクセスポイント３１０３と間で通信可能になる。
　以上のように、第３の実施形態に係る無線装置３２０１は、通信障害発生時に一時的に送信出力値を上げて、アクセスポイント３１０３と通信可能な状態にする。 Therefore, the wireless device 3201 normally performs communication with a minimum transmission output value, but when a communication failure occurs due to interference from the outside, the wireless device 3201 once increases the minimum transmission output value. As a result, the radio wave (desired wave) output with the changed transmission output value has become so large that it is not affected by the interference wave (from the outside) (the desired wave becomes dominant). Communication between the wireless device 3201 and the access point 3103 becomes possible.
As described above, the wireless device 3201 according to the third embodiment temporarily increases the transmission output value when a communication failure occurs to make it communicable with the access point 3103.
　その後、アクセスポイント３１０３との間で通信障害が発生した無線装置３２０１（以下、障害発生中無線装置３２０１ｘとする）は、「主無線機」である受光側無線機から「従無線機」である発光側無線機に、主従関係を切り替える処理を行う。これにより、障害発生中無線装置３２０１ｘと対を成す、アクセスポイント３１０３との間で通信障害が検出されていない無線装置３２０１ｙが「主無線機」である受光側無線機として機能する。
　その後、障害発生中無線装置３２０１ｘは、一時的に送信出力値を上げられているため、消費電力量を低減するために、最低限送信出力値に戻す。 Thereafter, the wireless device 3201 in which a communication failure has occurred with the access point 3103 (hereinafter, referred to as a failed wireless device 3201x) is a “slave wireless device” from the light receiving side wireless device that is the “main wireless device”. A process of switching the master-slave relationship is performed on the light emitting side radio. As a result, the wireless device 3201y that is paired with the wireless device 3201x in which a failure has occurred and has not detected a communication failure with the access point 3103 functions as a light-receiving-side wireless device that is the “main wireless device”.
Thereafter, since the transmission output value is temporarily increased, the radio device 3201x in which the failure has occurred is returned to the minimum transmission output value in order to reduce power consumption.
　第３の実施形態に係る無線装置３２０１は、第１の実施形態に係る無線装置２０１と同様に、対向配置している他の無線装置３２０１と無線通信を行い、発光側無線機または受光側無線機となるように機能（主従関係）を切り替える。 Similarly to the wireless device 201 according to the first embodiment, the wireless device 3201 according to the third embodiment performs wireless communication with the other wireless device 3201 disposed opposite to the light emitting side wireless device or the light receiving side wireless. Switch functions (master-slave relationship) so that
（アクセスポイント３１０３）
　この第３の実施形態係るアクセスポイント３１０３は、無線装置３２０１に送信したパケットが届かなかった場合に、通信障害と判断し、最低限送信出力値から一旦送信出力値を上げ、再度無線装置３２０１にパケットを送信（再送）する。この再送パケットも届かなかった場合、アクセスポイント３１０３は送信出力値を段階的に上げ、その度に無線装置３２０１にパケットを送信する。それでも再送パケットも届かなかった場合は、断念する。 (Access point 3103)
The access point 3103 according to the third embodiment determines that a communication failure has occurred when a packet transmitted to the wireless device 3201 has not arrived, temporarily raises the transmission output value from the minimum transmission output value, and then returns to the wireless device 3201 again. Send (resend) the packet. When this retransmitted packet is not received, the access point 3103 increases the transmission output value step by step, and transmits the packet to the wireless device 3201 each time. If the resend packet still does not arrive, give up.
　一方、いずれかの再送パケットが届いた場合、無線装置３０１２Ａと無線装置３０１２Ｂとは、主従関係を切り替える。切り替え後「主無線機」である受光側無線機として機能する無線装置３０１２とアクセスポイント３１０３との間で（通信異常が発生せず）正常にパケットの送受信が行われたとき、「従無線機」である発光側無線機として機能する無線装置３０１２は、一旦上げた送信出力値を最低限送信出力値に戻す。 On the other hand, when any one of the retransmission packets arrives, the wireless device 3012A and the wireless device 3012B switch the master-slave relationship. When the packet is normally transmitted / received between the wireless device 3012 functioning as the light receiving side wireless device that is the “primary wireless device” after switching and the access point 3103 (without any communication abnormality), The wireless device 3012 functioning as the light-emitting side wireless device returns the transmission output value once increased to the minimum transmission output value.
≪タイムチャート（第３の実施形態）≫
　次に、図１０を用いて、無線装置３２０１とアクセスポイント３１０３との処理動作について説明する。
　まず、アクセスポイント３１０３は、無線装置３２０１（３２０１Ａ、３２０１Ｂ）との間での無線通信における送信出力値が可能な限り低くなるように、送信出力値を調整しては、送信出力値変更パケットを送信する。その応答信号である、送信出力値変更ＡＣＫパケットが無線装置３２０１から所定時間内に届かなかった場合は、再度送信出力値を調整して、送信出力値変更パケットを送信する。このようにして、最低限送信出力値を決定する。 << Time Chart (Third Embodiment) >>
Next, processing operations of the wireless device 3201 and the access point 3103 will be described with reference to FIG.
First, the access point 3103 adjusts the transmission output value so that the transmission output value in the wireless communication with the wireless device 3201 (3201A, 3201B) is as low as possible, and transmits the transmission output value change packet. Send. If the transmission output value change ACK packet, which is the response signal, does not arrive from the wireless device 3201 within a predetermined time, the transmission output value is adjusted again and the transmission output value change packet is transmitted. In this way, the minimum transmission output value is determined.
　この最低限送信出力値で無線装置３２０１とアクセスポイント３１０３とが無線通信を行っている場合に、アクセスポイント３１０３から無線装置３２０１に送信したパケットに対して、所定時間内に無線装置３２０１から応答信号がなかったときを前提として、第３の実施形態に係るアクセスポイント３１０３は、切替処理を実行する。 When the wireless device 3201 and the access point 3103 are performing wireless communication with the minimum transmission output value, a response signal is transmitted from the wireless device 3201 to the packet transmitted from the access point 3103 to the wireless device 3201 within a predetermined time. The access point 3103 according to the third embodiment executes a switching process on the assumption that there is no data.
（アクセスポイント３１０３の処理）
　まず、アクセスポイント３１０３の制御部７０１（図８）は、一旦送信出力値を所定値分（１段階）上げて、変更後送信出力値にする（ステップＳ３０１）、その変更後送信出力値を格納した送信出力値変更パケット（不図示）を送信する（ステップＳ３０２）。 (Processing of access point 3103)
First, the control unit 701 (FIG. 8) of the access point 3103 temporarily increases the transmission output value by a predetermined value (one step) to obtain a changed transmission output value (step S301), and stores the changed transmission output value. The transmitted output value change packet (not shown) is transmitted (step S302).
（無線装置３２０１Ａ：受光側無線機の処理）
　受光側の無線装置３２０１Ａは、無線部２０４が送信出力値変更パケットを受信し（ステップＳ３０３）、制御部２０８が送信出力値変更パケットに格納された変更後送信出力値を取得する。
　そして、制御部２０８は、無線通信を行うときの送信出力値を、最低限送信出力値から取得した変更後送信出力値に変更し（ステップＳ３０４）、送信出力値変更ＡＣＫパケットを作成する。 (Wireless device 3201A: processing of light receiving side radio device)
In the wireless device 3201A on the light receiving side, the wireless unit 204 receives the transmission output value change packet (step S303), and the control unit 208 acquires the post-change transmission output value stored in the transmission output value change packet.
Then, the control unit 208 changes the transmission output value when performing wireless communication to the changed transmission output value acquired from the minimum transmission output value (step S304), and creates a transmission output value change ACK packet.
　そして、無線部２０４は、変更後送信出力値で送信出力値変更ＡＣＫパケットをアクセスポイント３１０３に送信する（ステップＳ３０５）。 Then, the wireless unit 204 transmits a transmission output value change ACK packet to the access point 3103 with the changed transmission output value (step S305).
（アクセスポイント３１０３の処理）
　アクセスポイント３１０３は、無線部７０３が送信出力値変更ＡＣＫパケットを受信する（ステップＳ３０６）。
　そして、アクセスポイント３１０３の制御部７０１は、送信出力値変更パケットを送信してから所定時間内に送信先から送信出力値変更ＡＣＫパケットを受信したか否かを判定する（ステップＳ３０７）。
　このタイムチャートでは、ステップＳ３０６にて送信出力値変更ＡＣＫパケットを受信しているため（ステップＳ３０７，Ｙｅｓ）、次のステップＳ２０１の処理を行う。一方、送信出力値変更ＡＣＫパケットを受信していなければ（ステップＳ３０７，Ｎｏ）、ステップＳ３０１に戻り、制御部７０１は一旦送信出力値をさらに所定値分（１段階）上げて、無線通信を行う。 (Processing of access point 3103)
In the access point 3103, the wireless unit 703 receives the transmission output value change ACK packet (step S306).
Then, the control unit 701 of the access point 3103 determines whether or not the transmission output value change ACK packet has been received from the transmission destination within a predetermined time after transmitting the transmission output value change packet (step S307).
In this time chart, since the transmission output value change ACK packet is received in step S306 (step S307, Yes), the process of the next step S201 is performed. On the other hand, if the transmission output value change ACK packet has not been received (No at Step S307), the process returns to Step S301, and the control unit 701 temporarily increases the transmission output value by a predetermined value (one step) and performs wireless communication. .
（ステップＳ２０１～Ｓ２１０の処理）
　そして、アクセスポイント３１０３の制御部７０１は、ステップＳ２０１～Ｓ２１０の処理を行い、主従関係を切り替える処理を行う。このステップＳ２０１～Ｓ２１０の処理は、第２の実施形態と同様の処理であるため、説明を省略する。
　これにより、無線装置３２０１Ａと無線装置３２０１Ｂとの主従関係が切り替わり、無線装置３２０１Ａが「従無線機」である発光側無線機として機能し、無線装置３２０１Ｂが「主無線機」である受光側無線機として機能する。 (Processing of steps S201 to S210)
Then, the control unit 701 of the access point 3103 performs the processing of steps S201 to S210, and performs processing for switching the master-slave relationship. Since the processes in steps S201 to S210 are the same as those in the second embodiment, description thereof will be omitted.
As a result, the master-slave relationship between the wireless device 3201A and the wireless device 3201B is switched, the wireless device 3201A functions as a light emitting side wireless device that is a “slave wireless device”, and the light receiving side wireless device that the wireless device 3201B is a “main wireless device”. Functions as a machine.
（アクセスポイント３１０３の処理）
　ステップＳ２０１～Ｓ２１０の処理後、アクセスポイント３１０３は、無線装置３２０１Ｂとの間で調整した最低限送信出力値（以下、最低限送信出力値Ｂと称する）で、通信確認用信号を送信する（ステップＳ３０８）。この通信確認用信号は送信先から応答信号が帰ってくるものであればよい。 (Processing of access point 3103)
After the processing in steps S201 to S210, the access point 3103 transmits a communication confirmation signal with the minimum transmission output value (hereinafter referred to as the minimum transmission output value B) adjusted with the wireless device 3201B (step S201). S308). This communication confirmation signal may be any signal as long as a response signal is returned from the transmission destination.
（無線装置３２０１Ｂ：受光側無線機の処理）
　受光側の無線装置３２０１Ｂは、無線部２０４が通信確認用信号を受信し（ステップＳ３０９）、応答信号を返信（送信）する（ステップＳ３１０）。
（アクセスポイント３１０３の処理）
　アクセスポイント３１０３は、無線部７０３が応答信号を受信する（ステップＳ３１１）。
　そして、アクセスポイント３１０３の制御部７０１は、通信確認用信号を送信してから所定時間内に送信先から応答信号を受信したか否かを判定する（ステップＳ３１２）。
　このタイムチャートでは、ステップＳ３１１にて応答信号を受信しているため（ステップＳ３１２，Ｙｅｓ）、切替処理を終了する。 (Wireless device 3201B: Processing of light receiving side wireless device)
In the wireless device 3201B on the light receiving side, the wireless unit 204 receives the communication confirmation signal (step S309), and returns (transmits) the response signal (step S310).
(Processing of access point 3103)
In the access point 3103, the wireless unit 703 receives the response signal (step S311).
Then, the control unit 701 of the access point 3103 determines whether or not a response signal has been received from the transmission destination within a predetermined time after transmitting the communication confirmation signal (step S312).
In this time chart, since the response signal is received in step S311 (step S312, Yes), the switching process is terminated.
　一方、送信出力値変更ＡＣＫパケットを受信していなければ（ステップＳ３１２，Ｎｏ）、アクセスポイント３１０３の制御部７０１は、再びステップＳ２０１～Ｓ２１０の処理を行い、主従関係を切り替える前の状態に戻す処理を行い、さらに、受光側の無線装置３２０１Ａとの無線通信における送信出力値を、最低限送信出力値に戻す処理を行う。そして、アクセスポイント３１０３の制御部７０１は、切替処理を終了する。 On the other hand, if the transmission output value change ACK packet has not been received (step S312, No), the control unit 701 of the access point 3103 performs the processing of steps S201 to S210 again to return to the state before switching the master-slave relationship. Further, a process of returning the transmission output value in the wireless communication with the light receiving side wireless device 3201A to the minimum transmission output value is performed. Then, the control unit 701 of the access point 3103 ends the switching process.
（主従関係を切り替える前の状態に戻す処理）
　アクセスポイント３１０３の制御部７０１は、例えば、再びステップＳ２０１～Ｓ２１０の処理を行うことにより、無線装置３２０１Ａと無線装置３２０１Ｂとの主従関係が元に戻り、無線装置３２０１Ａが「主無線機」である受光側無線機として機能し、無線装置３２０１Ｂが「従無線機」である発光側無線機として機能する。 (Process to return to the state before switching master-slave relationship)
The control unit 701 of the access point 3103, for example, performs the processing of steps S201 to S210 again, so that the master-slave relationship between the wireless device 3201A and the wireless device 3201B is restored, and the wireless device 3201A is the “main wireless device”. It functions as a light receiving side wireless device, and the wireless device 3201B functions as a light emitting side wireless device that is a “slave wireless device”.
（最低限送信出力値に戻す処理）
　また、アクセスポイント３１０３の制御部７０１は、例えば、最低限送信出力値を格納した送信出力値変更パケットを送信して、受光側の無線装置３２０１Ａとの無線通信における送信出力値を、最低限送信出力値に戻す。 (Process to return to the minimum transmission output value)
In addition, the control unit 701 of the access point 3103 transmits, for example, a transmission output value change packet storing a minimum transmission output value, and transmits a transmission output value in wireless communication with the light receiving side wireless device 3201A as a minimum. Return to the output value.
（効果）
　第３の実施形態に係る無線装置３２０１（３２０１Ａ、３２０１Ｂ）は、「主無線機」である受光側無線機として機能している場合に、一時的に無線通信の品質が劣化し、通信異常検出機能で通信異常を検出したとき、「主無線機」である受光側無線機の無線装置３２０１Ａは、「従無線機」である発光側無線機の無線装置３２０１Ｂに依頼をして、発光側無線機と受光側無線機との機能（主従関係）を切り替える。これにより、無線装置３２０１Ｂが「主無線機」である受光側無線機として機能する。そのため、アクセスポイント３１０３までの通信経路が、無線装置３２０１Ａ－アクセスポイント３１０３間ではなく、無線装置３２０１Ｂ－アクセスポイント３１０３間となる。このように通信経路が変わるため、無線装置３２０１Ａ－アクセスポイント３１０３間の通信経路において異常（例えば、無線電波の障害）があったとしても、（異常がないと思われる）無線装置３２０１Ｂ－アクセスポイント３１０３間の通信経路を利用して、外部装置１０４（図１）と正常に通信することができる。 (effect)
When the wireless device 3201 (3201A, 3201B) according to the third embodiment functions as a light-receiving-side wireless device that is a “main wireless device”, the quality of wireless communication is temporarily deteriorated, and a communication abnormality is detected. When the communication abnormality is detected by the function, the wireless device 3201A of the light receiving side wireless device that is the “primary wireless device” makes a request to the wireless device 3201B of the light emitting side wireless device that is the “secondary wireless device”, and the light emitting side wireless device Switch the function (master-slave relationship) between the receiver and the receiver radio. Accordingly, the wireless device 3201B functions as a light receiving side wireless device that is a “main wireless device”. Therefore, the communication path to the access point 3103 is not between the wireless device 3201A and the access point 3103, but between the wireless device 3201B and the access point 3103. Since the communication path changes in this way, even if there is an abnormality (for example, a radio wave failure) in the communication path between the wireless apparatus 3201A and the access point 3103, the wireless apparatus 3201B-access point (which seems to have no abnormality) It is possible to normally communicate with the external device 104 (FIG. 1) using the communication path between 3103.
　以上のように、第３の実施形態に係る無線装置３２０１は、一時的に無線通信の品質が変化した場合に、発光側無線機と受光側無線機との機能（主従関係）を切り替える。これにより、無線通信経路が無線装置３２０１Ｂ－アクセスポイント３１０３間に変わるため、通信異常が解消することを期待できる。 As described above, the wireless device 3201 according to the third embodiment switches the function (master-slave relationship) between the light emitting side wireless device and the light receiving side wireless device when the quality of wireless communication temporarily changes. As a result, since the wireless communication path changes between the wireless device 3201B and the access point 3103, it can be expected that the communication abnormality is resolved.
　本発明は、前記した実施形態に限定されることなく、本発明の要旨を逸脱しない範囲で種々の変更や変形を行うことができる。
　例えば、第１～第３の実施形態において、受光スイッチ部２０５と発光スイッチ部２０６とで分けて記載したが、受光センサ部２０３または発光センサ部２０４に電力が供給されればよいため、図１１に示すように、１つにまとめたスイッチ部２０５０であってもよい。 The present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the gist of the present invention.
For example, in the first to third embodiments, the light receiving switch unit 205 and the light emitting switch unit 206 are described separately, but it is sufficient that power is supplied to the light receiving sensor unit 203 or the light emitting sensor unit 204. As shown in FIG. 4, the switch unit 2050 may be combined into one.
　また、第１～第３の実施形態に係る無線装置２０１は、例えば、ＡＴＭ（Automated Teller Machine）等の自動取引装置や、複合機等の内部に配置して、装置内部で搬送される紙幣や通帳、紙等の媒体を検出する装置として用いることができる。一般的なＡＴＭの内部には、多数の検出装置が配置されており、それら１つ１つには、電力を供給するための配線や、通信を行うための配線がされている。この配線はＡＴＭの製造工程において非常に煩わしく、さらに設計段階で、装置内における配線スペースをも考慮しなければならないという問題がある。そこで、第１～第３の実施形態に係る無線装置２０１を用いることで、電力は電池から供給されることとなり、通信は無線で行うことができるため、それらの問題を解消することができる。 The wireless device 201 according to the first to third embodiments is, for example, an automatic transaction device such as ATM (Automated Teller Machine), a bill or It can be used as a device for detecting a medium such as a passbook or paper. A large number of detection devices are arranged inside a general ATM, and each of them has wiring for supplying power and wiring for communication. This wiring is very troublesome in the ATM manufacturing process, and there is a problem that the wiring space in the apparatus must be taken into consideration at the design stage. Therefore, by using the wireless device 201 according to the first to third embodiments, power is supplied from the battery, and communication can be performed wirelessly, so that these problems can be solved.
　他の実施形態として、検出システム２００は、アクセスポイント１０３の代わりに、一般的な無線ルータ等の無線ネットワーク中継装置を用いてもよい。このような構成にすることにより、一対の無線装置２０１は、無線ルータを経由して外部装置１０４と通信を行う。そのため、無線装置２０１と無線ルータとの間の通信経路上で異常が発生したとしても、別の無線ルータを経由すれば、通信異常を解消することができる。 As another embodiment, the detection system 200 may use a wireless network relay device such as a general wireless router instead of the access point 103. With this configuration, the pair of wireless devices 201 communicates with the external device 104 via the wireless router. Therefore, even if an abnormality occurs on the communication path between the wireless device 201 and the wireless router, the communication abnormality can be resolved through another wireless router.
　第１の実施形態では、切替処理において、カウントダウンを行っているが、所定の時刻となった時にステップＳ１０３を実行し、受光側の無線装置２０１Ａが電池残量確認パケット３００を送信してもよい。 In the first embodiment, the countdown is performed in the switching process, but step S103 may be executed when the predetermined time comes, and the wireless device 201A on the light receiving side may transmit the battery remaining amount confirmation packet 300. .
　また、第１の実施形態に係る無線装置２０１において、制御部２０８が、タイマ２１０にカウントダウンさせたり、電池残量の比較判定や、切替処理を行っているが、アクセスポイント１０３や外部装置１０４の制御部が行ってもよい。
　例えば、アクセスポイント１０３や外部装置１０４が内蔵するタイマを用いてカウントダウンしてもよい。また、アクセスポイント１０３や外部装置１０４が無線装置２０１それぞれに電池残量確認パケット３００を送信し、それぞれの無線装置２０１から電池残量確認ＡＣＫパケット４００を受信して、アクセスポイント１０３や外部装置１０４の制御部が電池残量の比較判定を行ってもよい。また、比較判定の結果、切り替えるのであれば、アクセスポイント１０３や外部装置１０４の制御部が状態変更パケット５００を無線装置２０１それぞれに送信してもよい。 In the wireless device 201 according to the first embodiment, the control unit 208 counts down the timer 210, compares and determines the remaining battery level, and performs switching processing. However, the access point 103 and the external device 104 It may be performed by the control unit.
For example, the timer may be counted down using a timer built in the access point 103 or the external device 104. In addition, the access point 103 and the external device 104 transmit the battery remaining amount confirmation packet 300 to each of the wireless devices 201, receive the battery remaining amount confirmation ACK packet 400 from each wireless device 201, and the access point 103 and the external device 104. The control unit may perform comparison determination of the remaining battery level. Further, if switching is performed as a result of the comparison determination, the control unit of the access point 103 or the external device 104 may transmit the state change packet 500 to each wireless device 201.
　２０１３年３月２６日に出願された日本国特許出願２０１３－０６３７３２号の開示は、その全体が参照により本明細書に取り込まれる。 The entire disclosure of Japanese Patent Application No. 2013-063732 filed on March 26, 2013 is incorporated herein by reference.

Claims (10)

  1. 　発光部と受光部とを備える２つの検出装置が、互いの前記発光部と前記受光部とが対向するように配設され、その一対の検出装置が無線通信可能に接続される検出システムであって、
    　前記一対の検出装置は、無線通信を行って前記発光部が機能し前記受光部の機能が停止する発光側装置と、前記受光部が機能し前記発光部の機能が停止する受光側装置とに交互に切り替えて、一方が前記発光側装置、他方が前記受光側装置として駆動する、
    出システム。     A detection system in which two detection devices each including a light emitting unit and a light receiving unit are arranged so that the light emitting unit and the light receiving unit face each other, and the pair of detection devices are connected so as to be capable of wireless communication. And
    The pair of detection devices includes a light emitting side device that performs wireless communication so that the light emitting unit functions and the function of the light receiving unit stops, and a light receiving side device that functions of the light receiving unit and that stops the function of the light emitting unit. By switching alternately, one is driven as the light emitting side device, the other is driven as the light receiving side device,
    Out system.
  2. 　前記検出装置は、
    　取り付けられる一次電池の電池残量を検出する電池残量検出部と、
    　他方の検出装置と通信可能に接続される無線部と
    　制御部と
    をさらに備え、
    　前記制御部は、
    　前記無線部を介して前記他方の検出装置に電池残量の送信を要求し、
    　受信した他方電池残量と、前記電池残量検出部が検出した自己電池残量とを比較し、
    　前記自己電池残量の方が前記他方電池残量より多いと判定した場合、前記発光側装置としての処理を実行し、一方、前記自己電池残量の方が前記他方電池残量より少ないと判定した場合、前記受光側装置としての処理を実行する
    　請求項１に記載の検出システム。     The detection device includes:
    A remaining battery level detection unit for detecting the remaining battery level of the attached primary battery;
    A radio unit and a control unit that are communicably connected to the other detection device;
    The controller is
    Request the other detection device to transmit the remaining battery power via the wireless unit,
    Compare the remaining battery level received with the remaining battery level detected by the battery level detector,
    When it is determined that the remaining battery level of the self battery is greater than the remaining battery level, the process as the light-emitting side device is executed, while the remaining battery level is determined to be less than the remaining battery level. The detection system according to claim 1, wherein if it is performed, processing as the light receiving side device is executed.
  3. 　前記検出装置は、
    　前記一次電池からの直流電力が、前記発光部と前記受光部とのどちらか一方に供給されるように切り替えるスイッチ部を備え、
    　前記制御部は、
    　前記自己電池残量の方が前記他方電池残量より多い場合、前記発光部に直流電力が供給されるように前記スイッチ部を切り替えさせて、一方、前記自己電池残量の方が前記他方電池残量より少ない場合、前記受光部に直流電力が供給されるように前記スイッチ部を切り替えさせる、
    　請求項２に記載の検出システム。     The detection device includes:
    A switch unit that switches so that DC power from the primary battery is supplied to either the light emitting unit or the light receiving unit,
    The controller is
    When the self battery remaining amount is greater than the other battery remaining amount, the switch unit is switched so that DC power is supplied to the light emitting unit, while the self battery remaining amount is the other battery. If less than the remaining amount, the switch unit is switched so that DC power is supplied to the light receiving unit,
    The detection system according to claim 2.
  4. 　前記発光側装置として機能する検出装置は、前記受光側装置として機能する検出装置からの前記電池残量の送信要求に応じて、前記電池残量検出部が検出した電池残量を送信する、請求項２に記載の検出システム。 The detection device that functions as the light emission side device transmits the remaining battery level detected by the remaining battery level detection unit in response to a request for transmission of the remaining battery level from the detection device that functions as the light reception side device. Item 3. The detection system according to Item 2.
  5. 　前記一対の検出装置それぞれと通信可能に接続され、前記一対の検出装置間での無線通信の中継を行う無線通信中継装置を備え、
    　前記無線通信中継装置は、前記一対の検出装置それぞれに状態変更指令を送信し、
    　前記状態変更指令を受信した前記発光側装置として駆動する検出装置は、前記発光部の機能を停止させて、前記受光部を機能させ、
    　前記状態変更指令を受信した前記受光側装置として駆動する検出装置は、前記受光部の機能を停止させて、前記発光部を機能させる、
    　請求項１に記載の検出システム。     A wireless communication relay device that is communicably connected to each of the pair of detection devices and relays wireless communication between the pair of detection devices,
    The wireless communication relay device transmits a state change command to each of the pair of detection devices,
    The detection device that is driven as the light emitting side device that has received the state change command stops the function of the light emitting unit, causes the light receiving unit to function,
    The detection device that is driven as the light receiving side device that has received the state change command stops the function of the light receiving unit and causes the light emitting unit to function.
    The detection system according to claim 1.
  6. 　前記無線通信中継装置は、
    　前記受光側装置として駆動する検出装置から、前記受光部が受光したという通知が送信されないときに、
    　前記一対の検出装置それぞれに前記状態変更指令を送信する、
    　請求項５に記載の検出システム。     The wireless communication relay device
    When the notification that the light receiving unit has received light is not transmitted from the detection device that is driven as the light receiving side device,
    Transmitting the state change command to each of the pair of detection devices;
    The detection system according to claim 5.
  7. 　前記無線通信中継装置は、
    　前記受光側装置として駆動する検出装置との通信が失敗したときに、
    　前記受光側装置と通信を行う際の送信出力を上げてから、
    　前記一対の検出装置それぞれに前記状態変更指令を送信する、
    　請求項５に記載の検出システム。     The wireless communication relay device
    When communication with the detection device driven as the light receiving side device fails,
    After increasing the transmission output when communicating with the light receiving side device,
    Transmitting the state change command to each of the pair of detection devices;
    The detection system according to claim 5.
  8. 　前記無線通信中継装置は、予め前記一対の検出装置それぞれと通信可能な最低限送信出力値を測定しておき、
    　前記無線通信中継装置は、通常、前記受光側装置として駆動する検出装置と、前記最低限送信出力値での通信を行う、
    　請求項７に記載の出システム。     The wireless communication relay device measures a minimum transmission output value that can communicate with each of the pair of detection devices in advance,
    The wireless communication relay device normally communicates with the detection device that is driven as the light receiving side device at the minimum transmission output value.
    8. The exit system according to claim 7.
  9. 　前記検出装置は、
    　制御部と、
    　一次電池からの直流電力が、前記発光部と前記受光部とのどちらか一方に供給されるように切り替えるスイッチ部とを備え、
    　制御部は、前記発光側装置として機能させる場合、前記発光部に電力が供給されるように前記スイッチ部を切り替えさせて、一方、前記受光側装置として機能させる場合、前記受光部に直流電力が供給されるように前記スイッチ部を切り替えさせる
    　請求項５ないし請求項８のいずれか一項に記載の検出システム。     The detection device includes:
    A control unit;
    A switch unit that switches so that direct-current power from the primary battery is supplied to one of the light emitting unit and the light receiving unit;
    When the control unit functions as the light-emitting side device, the control unit switches the switch unit so that power is supplied to the light-emitting unit. On the other hand, when the control unit functions as the light-receiving side device, DC power is supplied to the light-receiving unit. The detection system according to any one of claims 5 to 8, wherein the switch unit is switched so as to be supplied.
  10. 　発光部と受光部とを備える２つの検出装置が、互いの前記発光部と前記受光部とが対向するように配設され、その一対の検出装置が無線通信可能に接続される媒体検出システムを備えた自動取引装置であって、
    　前記一対の検出装置は、無線通信を行って前記発光部が機能し前記受光部の機能が停止する発光側装置と、前記受光部が機能し前記発光部の機能が停止する受光側装置とに交互に切り替えて、一方が前記発光側装置、他方が前記受光側装置として駆動するものであり、
    　前記発光側装置として駆動する検出装置の前記発光部から出力される光を、前記受光側装置として駆動する検出装置の前記受光部が検出することにより媒体の有無を検出する、自動取引装置。     A medium detection system in which two detection devices each including a light emitting unit and a light receiving unit are arranged so that the light emitting unit and the light receiving unit face each other, and the pair of detection devices are connected to be capable of wireless communication. An automatic transaction apparatus with which
    The pair of detection devices includes a light emitting side device that performs wireless communication so that the light emitting unit functions and the function of the light receiving unit stops, and a light receiving side device that functions of the light receiving unit and that stops the function of the light emitting unit. By switching alternately, one is driven as the light emitting side device, the other is driven as the light receiving side device,
    The automatic transaction apparatus which detects the presence or absence of a medium by the said light-receiving part of the detection apparatus which drives as the said light-receiving side apparatus detecting the light output from the said light emission part of the detection apparatus driven as the said light-emitting side apparatus.
PCT/JP2013/081207 2013-03-26 2013-11-19 Detection system and automatic transaction device WO2014155822A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012035953A (en) * 2010-08-05 2012-02-23 Ricoh Co Ltd Sheet type discriminating device, sheet feeder, and image forming apparatus
JP2012118791A (en) * 2010-12-01 2012-06-21 Oki Electric Ind Co Ltd Transaction apparatus, power feeding module and method of power feeding to electric element of transaction apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012035953A (en) * 2010-08-05 2012-02-23 Ricoh Co Ltd Sheet type discriminating device, sheet feeder, and image forming apparatus
JP2012118791A (en) * 2010-12-01 2012-06-21 Oki Electric Ind Co Ltd Transaction apparatus, power feeding module and method of power feeding to electric element of transaction apparatus

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