JP6430802B2 - Wireless disaster prevention system - Google Patents

Description

  The present invention relates to a wireless disaster prevention system that transmits a message wirelessly transmitted from a sensor node such as a wireless sensor to a receiver via a repeater node and issues an alarm.

  Conventionally, in a wireless disaster prevention monitoring system that monitors fires, a plurality of wireless sensors that function as sensor nodes are installed in the alert area such as each floor of a building or an occupied area of a condominium. When a fire is detected at, a message indicating the fire is transmitted wirelessly to a receiving repeater functioning as a repeater node installed on a floor basis. In addition, a radio wave repeater is installed as necessary, and a telegram from the wireless sensor is relayed by the radio wave repeater and transmitted to the reception repeater.

  The receiving repeater is connected to the sensor line from the receiver, and when a telegram indicating a fire is received, a fire alarm signal is received by sending an alarm current to the sensor line when the relay contact or switching element is turned on. To the machine. Upon receiving this fire alarm signal, the receiver issues a fire alarm by means of sound and display.

  According to such a wireless disaster prevention system, a part of a sensor line generally laid on the ceiling or the like can be eliminated, wiring work is simplified, and the installation location of the sensor is also restricted by wiring. You can decide without. In addition, it can easily cope with system changes such as the addition of sensors.

  By the way, in the conventional wireless disaster prevention system, a unique node ID (device ID) is fixedly stored in the wireless sensor and the reception repeater at the manufacturing stage, and installed on the same floor or the like. Based on the parent-child relationship between the receiving repeater and multiple wireless sensors, the wireless sensor that is the child node of the receiving repeater is pre-assigned an address to be used on the system, and the receiver is used prior to system operation. Node IDs of a plurality of wireless sensors having a parent-child relationship with the repeater and a combination of the node ID and address are registered in the reception repeater.

  The registration of the node ID of the wireless sensor for the reception repeater is performed by setting a registration mode by operating the reception repeater and the wireless sensor. The reception repeater for which the registration mode is set enters the waiting state for registration by specifying the address of the wireless sensor on the management table. When the registration mode is set for the wireless sensor in this state, the wireless sensor When an ID registration message is transmitted and the reception relay receives the registration message transmitted by the wireless sensor, it extracts the transmission source ID included in the received message and registers it as a node ID in the management table. By repeating this for all wireless sensors in a parent-child relationship, the correspondence between the address and the node ID is automatically registered.

  As a result, when receiving a message from the wireless sensor, the reception repeater compares the transmission source ID included in the message with the pre-registered node ID, and, for example, processes the message as a valid message when the two match. Like to do.

JP 2008-004033 A JP 2010-114632 A

  By the way, in the conventional receiving repeater, an antenna terminal is provided so that the receiving antenna to be used can be exchanged according to the installation site, and the receiving antenna is connected to the antenna terminal via a coaxial cable. In addition, transmission using a receiving antenna cannot be performed according to the Radio Law, and it is dedicated to reception. However, recent revisions to the Radio Law have made it possible to transmit even an antenna that is detachable from the antenna terminal, and therefore it is possible to provide a transmission / reception function in a reception repeater.

  In this way, when a transmission / reception function can be provided in a reception repeater, a setting device for a plurality of reception repeaters whose IDs are not known at the start of operation of the disaster prevention monitoring system or during system operation It is desirable to read and check, for example, the correspondence relationship between sensor nodes and addresses registered in the reception repeater wirelessly and to perform editing operations including addition, change, and deletion as necessary. .

  However, when a message such as a read command is transmitted from the setting device without specifying the ID of the reception repeater, all the reception repeaters in the range that effectively receive the transmission radio wave respond, and the communication timing for the response If they overlap, communication may not be established. For example, all radio waves become unreceivable due to a collision, or only a message from a receiving repeater with the strongest radio wave is received effectively, and a message from a receiving repeater with a weaker radio wave is received. It falls into the situation where it cannot do.

  In addition, sending a message of a write command to a receiving repeater without specifying an ID in this way and writing data is a write if a plurality of receiving repeaters are expected to receive a message. Since the destination cannot be specified, it is dangerous to write data.

  The present invention provides a wireless disaster prevention system that enables an ID of a repeater node in a range in which radio waves reach to be obtained wirelessly using a setting device, and allows data to be read and written by specifying the ID. For the purpose.

(Wireless disaster prevention system 1: Message response from repeater node corresponding to received intensity)
The present invention is composed of one or a plurality of sensor nodes, a repeater node, and a receiver. The relay node receives and processes a message wirelessly transmitted from the sensor node, and the processing result is received via a signal line. In the wireless disaster prevention system provided with a setting device that reads and writes information by specifying the ID of the repeater node,
When the setting device sequentially transmits to the repeater node a call message with no ID designation set with a predetermined response reception strength that gradually decreases from a predetermined initial value, and receives a response message from the repeater node for the call message In addition, the ID of the relay node included in the response message is acquired and registered, and the sleep request message specifying the registered ID is transmitted to the relay node, and is restored when the ID registration of the relay node is completed. A setting control unit that transmits a message to the relay node is provided.
The repeater node transmits a response message including its own ID to the setting device when the reception strength when the call message is received from the setting device is equal to or higher than the response reception strength specified in the call message, and is set after the response message is transmitted. A relay control unit is provided that suspends a message transmission operation when a sleep request message is received from a device, and releases the suspension when a restoration message is received from a setting device during the suspension of the message transmission operation.

(Wireless disaster prevention system 2; telegram response by channel frequency according to ID)
The present invention is composed of one or a plurality of sensor nodes, a repeater node, and a receiver. The relay node receives and processes a message wirelessly transmitted from the sensor node, and the processing result is received via a signal line. In the wireless disaster prevention system provided with a setting device that reads and writes information by specifying the ID of the repeater node,
The setting device transmits a call message with no ID designation to the repeater node using the initially set channel frequency, and receives a response message from the repeater node for the call message by a frequency sweep that changes the channel frequency in a predetermined frequency range. In this case, the relay controller node ID included in the response message is acquired and registered, and when the ID registration of the relay node is completed, a setting control unit that transmits a restoration message by frequency sweep of the channel frequency is provided.
When the repeater node receives a call message from the setting device using the initially set channel frequency, the repeater node transmits a response message including its own ID to the setting device using a predetermined response channel frequency corresponding to its own ID. A relay control unit for returning the channel frequency to the initial setting when receiving a restoration message using the channel frequency is provided.

(Recovery message transmission by registration ID end operation)
When the setting control unit of the setting device acquires the ID of the repeater node and registers it, the registration ID is displayed on the display unit so that the registration end can be confirmed, and the acceptance of the ID registration end operation by the operation unit is detected. Send a recovery message to.

(Confirmation of correspondence between address and node ID)
The relay control unit of the repeater node registers the correspondence between the node ID and address of the sensor node assigned in advance,
The setting control unit of the setting device reads and displays the correspondence relationship between the sensor node ID and address of the relay node specified by the registered ID.

(Edit correspondence between address and node ID)
The relay control unit of the repeater node registers the correspondence between the node ID and address of the sensor node assigned in advance,
The setting control unit of the setting device accepts and processes an editing operation including addition, change, or deletion of the correspondence between the sensor node ID and address of the relay node specified by the registered ID, and the editing result is transmitted to the relay node. Send and reflect.

(History log)
The relay control unit of the repeater node stores the history information including the message reception from the sensor node, the radio wave intensity, and the transmission of the message processing result to the receiver.
The setting control unit of the setting device reads and processes the history information of the relay node specified by the registered ID.

(Effect of wireless disaster prevention system 1)
The present invention is composed of one or a plurality of sensor nodes, a repeater node, and a receiver. The relay node receives and processes a message wirelessly transmitted from the sensor node, and the processing result is received via a signal line. In a wireless disaster prevention system provided with a setting device for reading and writing information by specifying the ID of the repeater node and transmitting to the machine, the setting device has a predetermined value that decreases stepwise from a predetermined initial value. When a response message is sent from the repeater node to the repeater node in response to the call message without ID designation with the response reception strength set, and the response message is received from the repeater node, the ID of the repeater node included in the response message is acquired. To send a sleep request message specifying the registered ID to the repeater node, and to send a recovery message to the repeater node when ID registration of the repeater node is completed The relay node transmits a response message including its own ID to the setting device when the reception strength when the call message is received from the setting device is greater than or equal to the response reception strength specified in the call message, A relay control unit is provided that suspends the message transmission operation when a sleep request message is received from the setting device after the transmission of the message, and cancels the suspension when a recovery message is received from the setting device during the suspension of the message transmission operation. Therefore, when a relay node in the range where the radio wave from the setting device arrives is received, a response message is transmitted only when the reception message specified by the call message is equal to or higher than the reception strength specified by the call message, and relayed from the setting device. Since the distance to the installation location of the equipment node is different, the response message is sent in order from the repeater node with the shortest distance by gradually decreasing the response reception intensity specified in the call message. Will be signals do not overlap the transmission timings of a plurality of repeater nodes can be registered to obtain the ID from the response message received in the repeater node units.

  In addition, to the repeater node that transmitted the response message, the response reception altitude is decreased stepwise by transmitting a sleep request message designating the ID from the setting device and suspending the transmission operation for the subsequent call message. However, it is possible to avoid sending response messages from a plurality of repeater nodes, and to send response messages in order from repeater nodes that are close to each other.

  Furthermore, when ID registration of all repeater nodes within the reach of radio waves from the setting device is completed, a recovery message is transmitted, so that the suspension of the transmission operation due to the reception of the sleep request message is canceled and the normal operation state It is possible to return to

(Effect of wireless disaster prevention system 2)
The present invention is composed of one or a plurality of sensor nodes, a repeater node, and a receiver. The relay node receives and processes a message wirelessly transmitted from the sensor node, and the processing result is received via a signal line. In a radio disaster prevention system provided with a setting device for reading and writing information by designating the ID of the repeater node and transmitting the information to the machine, the setting device calls the call message without ID designation according to the initially set channel frequency. Is transmitted to the repeater node, and when a response message is received from the repeater node for the call message by a frequency sweep that changes the channel frequency in a predetermined frequency range, the ID of the repeater node included in the response message is acquired. When the ID registration of the repeater node is completed, a setting control unit that transmits a restoration message by frequency sweep of the channel frequency When the relay node receives a call message from the setting device using the initially set channel frequency, the repeater node transmits a response message including its own ID to the setting device using a predetermined response channel frequency corresponding to its own ID. Since a relay control unit is provided to restore the channel frequency to the initial setting when a recovery message with a response channel frequency is received, the repeater node in the range where the radio wave from the setting device reaches can receive a call message with no ID designation. When received, the response message is transmitted using mutually different channel frequencies corresponding to its own ID, and the setting device individually receives response messages from different repeater nodes by frequency sweep that sequentially switches the channel frequency, Even if the transmission timings of multiple repeater nodes overlap, the channel frequency is different, It can be registered to obtain the ID from the response message that is received over de units.

  In addition, it is possible to return the channel frequency to the initial setting and return to the normal operation state by sending a restoration message when the ID registration of all repeater nodes within the reach of radio waves from the setting device is completed. To do.

(Effect of restoration message transmission by registration ID end operation)
When the setting control unit of the setting device acquires the ID of the repeater node and registers it, the registration ID is displayed on the display unit so that the registration end can be confirmed, and the acceptance of the ID registration end operation by the operation unit is detected. Since the recovery message is sent to the relay station, the number of repeater nodes in the range where the radio waves reach from the setting device is unknown, but when the display of the registration ID on the display unit stops, the relays in the range where the radio waves reach It is possible to recognize the end of the ID registration of the relay node, and thereby perform a recovery operation, so that a recovery message can be transmitted to the relay node to return to the normal operation state.

(Effect by confirming correspondence between address and node ID)
The relay control unit of the repeater node registers the correspondence between the node ID and address of the sensor node assigned in advance, and the setting control unit of the setting device stores the relay node specified by the registered ID. Since the correspondence between the sensor node ID and the address is read and displayed, if the correspondence between the sensor node ID and the address that operated the repeater node and the sensor node is automatically registered in the repeater node, whether or not it is correctly registered Is read out and displayed on the setting device and can be easily and easily performed.

(Effects of editing the correspondence between address and node ID)
The relay control unit of the repeater node registers the correspondence between the node ID and address of the sensor node assigned in advance, and the setting control unit of the setting device stores the relay node specified by the registered ID. The editing operation including the addition, change, or deletion of the correspondence between the sensor node ID and the address is accepted and processed, and the editing result is transmitted to the repeater node to be registered, so that the radio wave from the setting device can be received. After registering the ID of a certain relay node, for example, when a relay node fails and is replaced during system operation, the node ID of the sensor node read from the relay node before the failure by the setting device at the start of system operation Save the address correspondence in a server, etc., read this into the setting device, and then write the setting device of the replaced relay node closer In By registering, without entering the occupied part of the joint housing has installed sensor node, and operable to register the correspondence between the sensor node ID and the address for a simple and easily exchanged repeater node.

  In addition, when changing the assignment of sensor nodes as necessary in a plurality of repeater nodes, the correspondence between the node ID and address of the sensor node is read from the repeater node, and the node ID is rewritten based on the assignment change. By editing and writing the edit result in the repeater node and re-registering, the assignment of the sensor node to the repeater node can be changed without entering the occupied area of the apartment house where the sensor node is installed. Can be handled.

(History log)
In addition, the relay control unit of the repeater node stores history information including message reception and radio wave intensity from the sensor node and transmission of the message processing result to the receiver, and the setting control unit of the setting device stores the registered ID. Since the history information of the repeater node specified in the above is read and processed, history information such as the reception status of the repeater node and radio wave intensity during system operation can be easily collected and used for analysis of the communication environment, etc. And

Explanatory drawing which showed the outline of the radio disaster prevention system by the present invention Block diagram showing the functional configuration of the wireless sensor Block diagram showing the functional configuration of the receiving repeater Block diagram showing the functional configuration of the setting device Time chart showing the operation of acquiring and registering the ID of the receiving repeater by using a call message with no ID designation setting the response reception strength from the setting device Explanatory diagram showing the correspondence between IDs of receiving repeaters and channel frequencies in a list Time chart showing an operation of acquiring and registering an ID from a response message with a channel frequency corresponding to the ID of the receiving repeater by a calling message without ID designation from the setting device

[Wireless disaster prevention system]
(System overview)
FIG. 1 is an explanatory diagram showing an outline of a wireless disaster prevention system according to the present invention. In FIG. 1, receiving repeaters 12-1 to 12-3 functioning as repeater nodes are installed on the floors 1F to 3F of a building 11 to be monitored, and from a P-type receiver 10 that is a fire receiver. It is connected to a sensor line 16 and a common power line 18 drawn out by floor.

  Wireless sensors 14-11.14-12, 14-21, 14-22, and 14-31, 14-32 functioning as sensor nodes are installed on the floors 1F to 3F.

  In the following description, when it is not necessary to distinguish between the reception repeaters 12-1 to 12-3 and the wireless sensors 14-11 to 14-32, the reception repeaters 12 and the wireless sensors 14 are used. Note that a radio wave repeater may be installed on the reception repeater 12 in order to prevent signal non-arrival due to radio wave attenuation from the wireless sensor 14 that is far away.

  In each of the reception repeaters 12-1 to 12-3 and the wireless sensors 14-11 to 14-32, a unique node ID using the device ID is registered (stored) in advance.

  The wireless sensor 14 determines that a fire event has occurred when the smoke concentration or temperature due to fire exceeds a predetermined threshold, and intermittently wirelessly transmits a telegram signal indicating fire (hereinafter simply referred to as “telegram”). .

  The 1F reception repeater 12-1 includes a node ID for identifying the wireless sensors 14-11 and 14-12 as transmission sources as child nodes that receive a message based on the parent-child relationship and a system ID beforehand. The correspondence relationship with the assigned address is registered in advance in the memory as table information, for example.

  This also applies to the 2F and 3F reception repeaters 12-2 and 12-3. The reception repeater 12-2 includes the node IDs and addresses of the wireless sensors 14-21 and 14-22. Correspondence relationships are registered in advance as table information, and correspondence relationships between node IDs and addresses of the wireless sensors 14-31 and 14-32 are registered in advance as table information in the reception repeater 12-3. When a radio wave repeater is provided, the correspondence between the node ID and address of the electric field repeater is registered in the management table.

  When a message is received by registering the address and node ID for such a receiving repeater 12, the source ID included in the message is compared with the pre-registered node ID. It will be processed as a valid message.

  The wireless communication between the wireless sensor 14 and the reception repeater 12 is performed in accordance with the standard of a specific low power wireless station in the 400 MHz band, for example, in Japan, 426 Any of 48 channels having a band of 12.5 KHz from 2500 MHz to 426.8375 MHz can be used.

  Therefore, in the reception repeater 12 and the wireless sensor 14, a channel frequency to be used by selecting any one of 48 channels that can be used in the specific low power wireless station standard in the 400 MHz band is set. In this case, the channel frequencies may be the same on each floor, or different channel frequencies may be used on adjacent floors, for example, to avoid interference.

(Outline of receiving repeater transmission function and setting device)
The reception repeater 12 has an antenna terminal 42, and an antenna 40 for transmission / reception is connected to the antenna terminal 42 via a coaxial cable, so that the antenna 40 to be used can be exchanged according to the installation location.

  The setting device 20 includes a display unit such as a liquid crystal display and an operation unit including operation keys. The setting device 20 establishes a communication connection via a wireless line between the reception repeater 12 and the setting device 20. Reference numeral 20 functions as a reader / writer for reading / writing information from / to the reception repeater 12, registration by acquisition of ID and reading of various kinds of information with a reception relay device within the reach of radio waves from the setting device 20. Or write.

[Wireless sensor]
(Functional configuration of wireless sensor)
FIG. 2 is a block diagram showing a functional configuration of the wireless sensor. As shown in FIG. 2, the wireless sensor 14 functioning as a sensor node includes a sensor control unit 22, a wireless communication unit 24 connected to an antenna 26, a sensor unit 28, a display unit 30, an operation unit 32, and a battery power source 34. Is provided.

  The sensor control unit 22 is a computer circuit having a CPU, a memory, various input / output ports, and the like. For example, in the case of Japan, the wireless communication unit 24 intermittently transmits a message in accordance with the standard of a specific low-power wireless station in the 400 MHz band.

  The format of a message transmitted by the wireless communication unit 24 includes a preamble (phase correction data), a transmission source ID, a message type, data such as smoke concentration and temperature, and an error check code. Among these, the message type represents, for example, a message indicating a sensor state, a message indicating a periodic report, and the like. The transmission source ID is an ID of a wireless sensor serving as a message transmission source. For example, when identification of a wireless sensor having a scale of 1 million is assumed, the transmission source ID is 50 to 60 bits long.

  The sensor unit 28 detects smoke by, for example, a scattered light type smoke detection mechanism, and outputs a smoke detection signal corresponding to the smoke density. Based on this, the sensor control unit 22 detects a fire. Note that a temperature detection element such as a thermistor may be provided in the sensor unit 28, and a temperature detection signal may be output to the sensor control unit 22 to detect a fire based on the temperature detection signal. The display unit 30 includes an alarm indicator lamp that is turned on when a fire is detected. The operation unit 32 includes a registration switch, a test switch, and the like.

  The sensor control unit 22 is a function realized by execution of a program by a computer circuit, and performs the following control.

  When detecting the operation of the registration switch provided in the operation unit 32, the sensor control unit 22 generates an ID registration activation message, and instructs the wireless communication unit 24 to transmit it to the reception repeater 12. Then, the reception relay 12 that has received this activation message registers the correspondence between the address and the node ID.

  In addition, the sensor control unit 22 generates a message indicating a fire when, for example, the smoke concentration detection signal output from the sensor unit 28 exceeds a predetermined fire threshold, and instructs the wireless communication unit 24 to relay for reception. Control to cause the device 12 to transmit is performed. In this case, the message transmission repeats a message transmission for continuously transmitting the same message signal over a predetermined message transmission time and a message suspension for stopping the message transmission for a predetermined time.

  In addition, even when an event such as a fire recovery, a failure, or a test is detected, the sensor control unit 22 generates a message indicating the detected event content, and instructs the wireless communication unit 24 to transmit it to the reception repeater 12. To control.

[Repeater for reception]
(Functional configuration of receiving repeater)
FIG. 3 is a block diagram showing a functional configuration of the reception repeater. As shown in FIG. 3, the reception repeater 12 functioning as a repeater node uses a radio communication unit that uses a transmission / reception antenna 40 that is detachably connected to the relay control unit 36 and the antenna terminal 42 via a coaxial cable. 38, a reception intensity detection unit 45, an operation unit 44, a display unit 46, a line communication unit 48, and a power supply unit 50.

  The relay control unit 36 is a computer circuit having a CPU, a memory, various input / output ports, and the like. For example, in the case of Japan, the wireless communication unit 38 receives a message from the wireless sensor 14 in accordance with the standard of a specific low-power wireless station in the 400 MHz band, and sends a message to and from the setting device 20. Send and receive. The wireless communication unit 38 has an antenna terminal 42, and the antenna 40 can be exchanged according to the installation location.

  As described above, the format of a message received from the wireless sensor 14 by the wireless communication unit 38 includes a preamble, a transmission source ID, a communication type, data, and an error check code.

  In addition, the format of a message transmitted / received to / from the setting device 20 by the wireless communication unit 38 includes a preamble, a transmission source ID, a transmission destination ID, a command, data, and an error check code.

  The reception intensity detection unit 45 detects the reception intensity of the radio wave received by the wireless communication unit 38 and outputs a reception intensity detection signal to the relay control unit 36.

  The operation unit 44 includes a registration switch, an address setting DIP switch, and the like, and performs various settings that require relay control. The display unit 46 is provided with various display lamps such as an indicator showing the set channel frequency, a power lamp, a warning indicator lamp, and a trouble lamp.

  When the line communication unit 48 receives a telegram indicating a fire alarm based on an instruction from the relay control unit 36, the line communication unit 48 sends a fire alarm signal to the sensing line 16 from the P-type receiver 10 and transmits a fire alarm signal. Then, a fire alarm is output, and when a failure is detected, the detection line 16 is disconnected to create a pseudo disconnection state, so that a failure alarm is output on the P-type receiver 10 side.

  The relay control unit 36 is a function realized by execution of a program by a computer circuit, and performs the following control.

  The relay control unit 36 sets a registration waiting state when detecting the acceptance of the registration operation by the registration switch in a state where the registration address not registered in the node ID is displayed on the display unit 46 by the operation of the DIP switch of the operation unit 44. When the activation message for ID registration transmitted from the wireless sensor 14 is received via the wireless communication unit 38 in the state, the transmission source ID included in the activation message is extracted, and the wireless detection corresponding to the unregistered address is performed. The table information registered as the node ID of the device 14 is controlled.

  When the relay control unit 36 receives a fire message from the assigned wireless sensor 14 via the wireless communication unit 38, the relay control unit 36 instructs the line communication unit 48 to send a notification current to the sensor line 16. Control is performed to transmit a fire alarm signal to the P-type receiver 10 to output a fire alarm.

  Further, when receiving the fire recovery message after receiving the fire message, the relay control unit 36 instructs the line communication unit 48 to stop the alarm current flowing in the detector line 16 and transmit the fire alarm signal. Control to stop.

  When the relay control unit 36 receives a fault message from the assigned wireless sensor 14 via the wireless communication unit 38, the relay control unit 36 instructs the line communication unit 48 to disconnect the sensor line 16 to make a pseudo disconnection. By creating the state, control is performed to output a failure alarm on the P-type receiver 10 side.

  When the relay control unit 36 receives a call message without ID designation from the setting device 20 via the wireless communication unit 38, the relay control unit 36 transmits a response message including its own ID according to a predetermined response control condition and transmits the response message. The control of registering the ID of the receiving repeater 12 is performed in detail, and details of this ID registration control will be clarified in a later description.

  Further, when the relay control unit 36 receives a message including a setting information read request by ID designation from the setting device 20 via the wireless communication unit 38, for example, the address and the node ID of the wireless sensor 14 to be assigned The table information indicating the correspondence relationship is read out, a message is generated, the wireless communication unit 38 is instructed to transmit the message to the setting device 20, and the setting device 20 that has received this message receives the wireless type as an assignment destination. Table information indicating the correspondence between the address of the sensor 14 and the node ID is displayed, and editing operations such as confirmation, change, addition, and deletion are performed. The setting information of the reception repeater 12 includes setting information such as channel frequency and sensitivity of the wireless sensor 14 in addition to the table information indicating the correspondence between the address of the wireless sensor 14 and the node ID. .

  Further, when the relay control unit 36 receives a message including a setting information write request by ID designation from the setting device 20 via the wireless communication unit 38, the edited address and node ID included in the message, for example. The table information indicating the correspondence relationship is extracted and registered.

  When the relay control unit 36 detects a predetermined event, the relay control unit 36 performs control to register the detected event as history information. The history information registered by the relay control unit 36 includes a message reception from the assigned wireless sensor 14, a radio wave intensity at the time of message reception, transmission of a message processing result to the P-type receiver 10, and the like.

  In addition, when the relay control unit 36 receives a message including a history information read request by ID designation from the setting device 20 via the wireless communication unit 38, the relay control unit 36 reads the history information, generates a message including the message, and performs wireless communication. The control is performed by instructing the unit 38 to transmit to the setting device 20, and the history information is stored in the setting device 20 that has received the message, and can be used.

[Setting device]
(Functional configuration of setting device)
FIG. 4 is a block diagram showing a functional configuration of the setting device. As shown in FIG. 4, the setting device 20 functioning as a reader / writer of the reception repeater includes a setting control unit 60, a wireless communication unit 62 connected with an antenna 64, a liquid crystal display 66, a touch panel 68, a display unit 70, an operation. Unit 72, I / F circuit unit 74 for communication connection with an external device such as a server, power supply unit 76, connector unit 78, and power supply connector unit 80.

  The setting control unit 60 is a computer circuit having a CPU, a memory, various input / output ports, and the like.

  In the case of Japan, the wireless communication unit 62 conforms to the standard of a specific low-power wireless station in the 400 MHz band, for example, and establishes a communication connection with the wireless communication unit 38 of the reception repeater 12 to establish a predetermined value. Send and receive telegrams containing the information. The format of a message transmitted / received to / from the setting device 20 by the wireless communication unit 62 includes a preamble, a transmission source ID, a transmission destination ID, a command, data, and an error check code.

  The liquid crystal display 66 enables display including characters and images sufficient for confirmation of ID registration of the reception repeater 12, confirmation of setting information, editing and rewriting of setting information, reading of a history log, and the like. In addition, by using the liquid crystal display 66 with the touch panel 68, an operation using the display screen can be performed. The display unit 70 is provided with various display lamps including a power lamp.

  The operation unit 72 has operation keys arranged therein, selection of a channel frequency for communicating with the reception repeater 12, ID registration of the reception repeater 12, confirmation of setting information, re-registration by editing setting information, Enables operations necessary for reading history logs.

  The I / F circuit unit 74 is connected to the manufacturer's management server or the like via the connector unit 78, and the setting information of the reception repeater 12 read by the setting device 20 is stored in the management server for backup or history log. For example, Ethernet (registered trademark) is used for data transmission for storing data.

  The power supply unit 76 includes a battery power supply. When the portable power supply unit 76 is carried and used, the power supply unit 76 is operated by the battery power supply. To do.

  The setting control unit 60 is a function realized by executing a program by a computer circuit, and performs, for example, the following control.

  When the setting control unit 60 detects acceptance of the ID registration operation of the reception repeater 12 by the touch panel 68 or the operation unit 48, the setting control unit 60 performs predetermined control by wireless communication with the reception repeater 12 within the reach of the radio wave. Thus, control is performed for acquiring and registering the ID of the reception repeater 12 that is not known. The details of this ID registration control will be clarified later.

  Also, when the setting control unit 60 detects acceptance of a setting information reading operation by the touch panel 68 or the operation unit 72, the setting control unit 60 generates a message specifying the ID of the reception repeater 12 including the setting information reading request, When the communication unit 62 is instructed to transmit to the reception repeater 12 and a message including setting information is received from the reception repeater 12 via the wireless communication unit 62, the setting information is extracted from the received message and the liquid crystal display 66 Control to display on the screen.

  When the setting control unit 60 detects acceptance of a registration request operation after editing including change, addition, and deletion of the setting information read from the reception repeater 12 and displayed on the liquid crystal display 66, the registration request And a message specifying the ID of the reception relay 12 including the edited setting information, performing control to instruct the wireless communication unit 62 to transmit to the reception relay 12, and receiving the received relay The setting information is registered in the device 12.

  In addition, when the setting control unit 60 receives an activation message transmitted by setting the registration mode associated with the operation of the registration switch of the wireless sensor 14, the setting control unit 60 extracts the transmission source ID from the activation message and uses the liquid crystal display 66 as a node ID. Control to display on the screen. As a result, the setting device 20 can automatically acquire the node ID of the wireless sensor 14.

  Further, when the setting control unit 60 detects acceptance of the history information reading operation by the touch panel 68 or the operation unit 72, the setting control unit 60 generates a message specifying the ID of the reception repeater 12 including the history information reading request, When the communication unit 62 is instructed to transmit to the reception repeater 12 and a message including history information is received from the reception relay 12 via the wired communication unit 62, the history information is extracted from the received message and the liquid crystal display 66 Control to display and save.

  In addition, the setting control unit 60 reads the history information from the reception repeater 12 and stores the history information so that the setting control unit 60 can connect to the server via the LAN connector unit 78, and the history information by the touch panel 68 or the operation unit 72 is stored. When the acceptance of the transfer operation is detected, the currently stored history information is read, a message including the history information is generated, and the I / F circuit unit 74 is instructed to transmit to the server. It is stored and managed on the server that received the transfer, and can be used for analyzing the cause of non-fire reports on the server.

[ID registration by response message from repeater node corresponding to call message reception strength]
As shown in FIG. 1, for example, an attendant who carries the setting device 20 is in the vicinity of the reception relay 14-1 on the first floor, and the IDs of the reception repeaters 12-1 to 12-3 are unknown. For example, table information indicating the correspondence between the address of the wireless sensor 14 and the node ID registered in the reception repeaters 12-1 to 12-3 by the setting device 20 is read and displayed, and is first known. The process of acquiring and registering the IDs of the reception relays 12-1 to 12-3 that are not present is performed.

  In the present embodiment, as the ID registration processing of the reception repeater 12 by the setting device 20, ID registration is performed by the response message from the reception repeater 12 corresponding to the reception strength of the call message from the setting device 20. .

(Control function of setting device and receiving repeater)
When the setting control unit 60 of the setting device 20 illustrated in FIG. 3 detects acceptance of the ID registration operation of the reception repeater 20 by the touch panel 66 or the operation unit 72, the setting control unit 60 decreases a predetermined amount from a predetermined initial value. When a call message with no ID designation set with the response reception strength Eth is sequentially transmitted to the reception repeater 12, and a response message is received from the reception repeater 12 for this call message, the transmission source included in the response message The ID is acquired as the ID of the reception repeater 12 and registered in the memory, and the sleep request message designating the registered ID is transmitted to the reception repeater 12, and the reception repeater 12 within the reach of the radio wave is transmitted. When the ID registration is completed, control is performed to transmit a restoration message to the relay node.

  Further, the relay control unit 36 of the reception repeater 12 shown in FIG. 2 specifies the reception strength E detected by the reception strength detection unit 45 when the call message without ID designation is received from the setting device 20 as the call message. When the response reception strength Eth is equal to or higher than the response message, the response message including its own ID is transmitted to the setting device 20, and when the sleep request message is received from the setting device 20 after the response message is transmitted, the message transmission operation is suspended and the message transmission is performed. When a recovery message is received from the setting device 20 while the operation is suspended, control for canceling the suspension is performed.

(ID registration operation of receiving repeater by setting device)
FIG. 5 is a time chart showing the operation of acquiring and registering the ID of the reception repeater by the call message with no ID designation set from the setting device, and will be described with reference to FIGS. It becomes as follows.

  As shown in FIG. 1, for example, a staff member who carries the setting device 20 is in the vicinity of the reception relay 12-1 on the first floor, and the ID of the reception repeater 12 is touched by the touch panel 68 or the operation unit 72 of the setting device 20. When the registration operation is performed, as shown in step S1 of FIG. 5 (hereinafter, “step” is omitted), the setting control unit 60 of the setting device 20 does not specify an ID with a predetermined response reception strength Eth (transmission destination ID). Is generated), and the wireless communication unit 62 is instructed and transmitted.

  The calling message transmitted by the setting device 20 is received as S2 and S5 by the receiving relay 12-1 of 1F and the receiving relay 12-2 of 2F, for example, where the radio wave arrives, and is received by the reception intensity detection unit 45. The reception strengths E1 and E2 at each wireless communication unit 38 are detected. In this case, since the distance from the setting device 20 is close to the reception repeater 12-1 and the reception repeater 12-2 is far away, the reception intensity has a relationship of E1> E2.

  In S3, the relay control unit 36 of the reception repeater 12-1 compares the response reception intensity Eth contained in the received call message with the reception intensity E1 detected by the reception intensity detection unit 45, and the reception intensity E1 is Since it is equal to or higher than the response reception strength Eth, the process proceeds to S4, and a response message in which its own ID is set as the transmission source ID is transmitted to the setting device 20.

  On the other hand, the relay control unit 36 of the reception repeater 12-2 compares the response reception intensity Eth included in the call message received in S6 with the reception intensity E1 detected by the reception intensity detection unit 45, and receives the reception intensity E1. Is less than the response reception strength Eth, the response message with its own ID set as the transmission source ID is not transmitted.

  The setting control unit 60 of the setting device 20 receives the response message from the reception repeater 12-1 in S7, extracts the transmission source ID as the ID of the reception repeater 12-1, and registers it in the memory. The registration ID is displayed on the liquid crystal display 66.

  Subsequently, in S8, the setting control unit 60 of the setting device 20 generates a sleep request message in which the ID registered in the memory is set as the transmission destination ID, and instructs the wireless communication unit 62 to transmit it. The sleep request message from the setting device 20 is effectively received in S9 due to the coincidence of the transmission destination ID and the self ID by the reception repeater 12-1, and the relay control unit 36 is based on the sleep request message, based on the sleep request message. Pauses the message transmission operation.

  Subsequently, the setting control unit 60 of the setting device 20 changes the response reception strength Eth to Eth = Eth−ΔE, which is smaller by a predetermined value ΔE in S10, and sets the response reception strength Eth changed (decreased) in S11, without ID designation Send a call message.

  The call message transmitted by the setting device 20 for the second time is received as S12 and S14 by the reception repeater 12-1 of 1F and the reception repeater 12-2 of 2F, for example. The relay device 12-1 does not transmit a response message because the message transmission function is stopped by the sleep operation as in S13.

  On the other hand, the reception repeater 12-2 determines that the reception intensity E2 detected by the reception intensity detection unit 45 in S15 is equal to or greater than the decreased response reception intensity Eth included in the call message from the setting device 20, Proceeding to S <b> 16, a response message in which its own ID is set as the transmission source ID is transmitted to the setting device 20.

  The setting controller 60 of the setting device 20 receives the response message from the reception repeater 12-2 in S17, extracts the transmission source ID as the ID of the reception repeater 12-2, registers it in the memory, The registration ID is displayed on the liquid crystal display 66.

  Subsequently, the setting control unit 60 of the setting device 20 generates a sleep request message in which the ID registered this time in the memory in S18 is set as the transmission destination ID, and instructs the wireless communication unit 62 to transmit it. The sleep request message from the setting device 20 is effectively received by the reception repeater 12-2 due to the coincidence of the transmission destination ID and the self ID 2 in S19, and the relay control unit 36 is based on the sleep request message based on the wireless request unit 38. Pauses the message transmission operation.

  Subsequently, the setting control unit 60 of the setting device 20 changes the current response reception strength Eth to S = Eth−ΔE which is smaller by a predetermined value ΔE in S20, and sets the response reception strength Eth changed (decreased) in S21. Send an unspecified call message.

  When there is no receiving repeater to which the call message transmitted by the setting device 20 for the third time arrives, the display of further registration IDs on the liquid crystal display 66 of the setting device 20 is stopped. 20, it is determined that all ID registrations of the reception repeater 12 at the position where the radio wave from 20 is received are completed, and the registration end operation is performed by the touch panel 68 or the operation unit 72.

  When the setting control unit 60 of the setting device 20 determines the registration end operation in S22, the recovery message in which the registered IDs of the reception repeaters 12-1 and 12-2 are set to the transmission source ID1 is sequentially transmitted in S23. The restoration message from the setting device 20 is effectively received by the reception repeaters 12-1 and 12-2 as in S24 and S25, and each relay control unit 36 cancels the sleep operation and pauses the message transmission. Enable operation and return to normal state before registering ID.

  If the IDs of the reception repeaters 12-1 and 12-2 are acquired and registered by the setting device 20 in this way, a read command or write specifying the IDs of the reception repeaters 12-1 and 12-2. By transmitting a message including a command, it becomes possible to read and write necessary data from the reception repeaters 12-1 and 12-2.

  When a call message is transmitted while the response reception strength Eth is decreased by a predetermined value ΔE, when the reception strength E becomes equal to or higher than the response reception strength Eth by a plurality of reception relays 12, the transmission timing of the response messages overlaps. The device 20 causes a collision (collision) that makes reception impossible. As shown in FIG. 1, the reception repeaters 12-1 to 12-3 have different communication distances, for example, according to floors. Thus, by appropriately setting the value of ΔE for which the response reception strength Eth is decreased stepwise, for example, by setting the value of ΔE to a small value, the reception strength E is responded by the plurality of reception repeaters 12. It is possible to reliably avoid a response telegram collision that occurs when the received intensity Eth or higher.

  In addition, when the reception strength E becomes equal to or higher than the response reception strength Eth in the plurality of reception repeaters 12 and a response message collision occurs, the attendant changes the location and transmits a call message from the setting device 20. It is also possible to avoid collision of response messages.

(Merit of ID registration operation of receiving repeater by setting device)
According to the ID registration operation of the reception repeater 12 by the setting device 20 shown in FIG. 5, the reception repeater 12 in the range where the radio wave from the setting device 20 reaches can receive a call message without ID designation. When received, the response message is transmitted only when the reception strength E is equal to or higher than the response reception strength Eth specified by the call message, and the distance from the setting device 20 to the installation locations of the plurality of reception repeaters 12 is different. Therefore, by gradually reducing the response reception strength Eth specified by the call message, the response messages are transmitted in order from the reception repeater 12 with a short distance, and the transmission timings of the plurality of reception repeaters 12 are transmitted. IDs can be acquired and registered from response messages received in units of receiving repeaters.

  Further, the setting device 20 transmits a sleep request message specifying an ID to the reception repeater 12 that has transmitted the response message, and pauses the transmission operation for the subsequent call message, thereby gradually increasing the response reception altitude. Even if the number is decreased, response messages are not transmitted unnecessarily from the plurality of reception repeaters 12, and response messages can be transmitted in order from the reception repeaters 12 with a short distance.

  Further, when the ID registration of all the receiving repeaters 12 within the range where the radio waves from the setting device 20 reach is completed, the restoration message is transmitted, thereby canceling the suspension of the transmission operation due to the reception of the sleep request message. It is possible to return to the operational state of.

[ID registration by telegram response with channel frequency according to ID of receiving repeater]
As another embodiment of the ID registration process of the reception repeater 12 by the setting device 20, the setting device is configured by transmitting a response message with a channel frequency corresponding to the ID of the reception repeater 12 to the calling message from the setting device 20. At 20, ID registration is performed.

  The configuration of the reception repeater 12 in the present embodiment is the same as that except for the reception intensity detection unit 45 in FIG. 3, and the setting device 20 has the same configuration as in FIG. 4, and each wireless communication unit 38, As 36, a function for enabling switching of the channel frequency within a predetermined frequency range is added.

(Control function of setting device and receiving repeater)
When the setting control unit 60 of the setting device 20 shown in FIG. 4 detects acceptance of the ID registration operation of the reception repeater 20 by the touch panel 68 or the operation unit 72, the call message without ID designation by the initially set channel frequency. Is transmitted to the reception repeater 12, and when the response message from the reception repeater 12 for the call message is received by the frequency sweep that changes the channel frequency within a predetermined frequency range, the reception relay included in the response message is received. If the transmission source ID of the receiver 12 is acquired and registered as the ID of the receiving repeater 12, and ID registration of all the receiving repeaters 12 within the reach of the radio wave is completed, the restoration message is obtained by frequency sweep of the channel frequency. Control to send.

  2 receives the call message from the setting device 20 using the initially set channel frequency, the relay control unit 36 of the reception repeater 12 uses the predetermined response channel frequency corresponding to its own ID. When a response message including its own ID is transmitted to the setting device 20 and a recovery message based on the response channel frequency is received, control is performed to return the channel frequency to the initial setting.

  FIG. 6 is an explanatory diagram showing a list of correspondence relationships between IDs of reception repeaters and channel frequencies. As shown in FIG. 6, in this example, channel frequencies A to H are set corresponding to binary values 000 to 111 by b3b2b1 of the lower 3 bits in the ID of the reception repeater 12, and the self-frequency is set from among them. The response message is transmitted to the setting device 20 by switching to the channel frequency corresponding to the ID.

  Note that the number of ID bits used for channel frequency selection can be appropriately determined as necessary so that the number of selectable channels is within 48, in order to increase the probability of avoiding response message collisions. It is sufficient to select 32 channels using the lower 5 bits at the maximum.

  Therefore, the wireless communication unit 38 of the reception repeater 12 shown in FIG. 3 has a function of switching the channel frequency used for transmission / reception based on an instruction from the relay control unit 36. In addition, the wireless communication unit 12 of the setting device 20 shown in FIG. 4 also performs frequency sweep that continuously switches the channel frequency used for transmission / reception within the range of the channel frequencies A to H of the reception repeater 12 according to the instruction of the setting control unit 60. The operation function is provided.

(ID registration operation of receiving repeater by setting device)
FIG. 7 is a time chart showing an operation of acquiring and registering an ID from a response message with a channel frequency corresponding to the ID of the receiving repeater by a calling message without ID designation from the setting device, and FIGS. 4 together with the following explanation.

  As shown in FIG. 1, for example, a staff member who carries the setting device 20 is in the vicinity of the reception relay 14-1F, and the ID of the reception repeater 12 is touched by the touch panel 68 or the operation unit 72 of the setting device 20. When the registration operation is performed, as shown in S101 of FIG. 7, the setting control unit 60 of the setting device 20 generates a call message with no ID designation (empty transmission destination ID) based on the initially set channel frequency, The wireless communication unit 62 is instructed and transmitted.

  The calling message transmitted by the setting device 20 is received as in S102 and S104 by the 1F reception repeater 12-1 and the 2F reception repeater 12-2, for example, which receive the radio waves. In step S103, the relay control unit 36 of the reception repeater 12-1 that has received the call message transmits the channel frequency B corresponding to, for example, “001”, which is the lower 3 bits of its own ID from the correspondence shown in FIG. The selected response message is set in the wireless communication unit 38 and its own ID is set as the transmission source ID, and transmitted to the setting device 20 using the channel frequency B.

  On the other hand, the relay control unit 36 of the reception repeater 12-2 that has received the call message transmits the channel frequency corresponding to, for example, “101”, which is the lower 3 bits of its own ID1 from the correspondence shown in FIG. F is selected and set in the wireless communication unit 38, and a response message in which its own ID is set as the transmission source ID is transmitted to the setting device 20 using the channel frequency F.

  The setting control unit 60 of the setting device 20 repeats the sweep operation of the channel frequency that is received by switching the frequency channel in order within the frequency range of the channel frequencies A to H from which the response message is transmitted from the reception repeater 12 in S106. If the reception of the response message at the channel frequency B or H switched in S107 is determined, the process proceeds to S108, and the transmission source ID of the received response message is extracted as the ID of the reception repeaters 12-1 and 12-2. While registering in the memory, the registration IDs of the reception repeaters 12-1 and 12-2 are displayed on the liquid crystal display 66.

  When the ID registration of all the receiving repeaters 12-1 and 12-2 to which the call message from the setting device 20 arrives is finished, the display of the further registration IDs on the liquid crystal display 66 of the setting device 20 is stopped. The clerk determines that all ID registration of the reception repeater 12 at the position where the radio wave from the setting device 20 reaches has been completed, and performs a registration end operation using the touch panel 68 or the operation unit 72.

  When the setting control unit 60 of the setting device 20 determines the registration end operation in S109, the setting device 60 transmits the restoration message by sequentially using the channel frequencies B and F used for the communication of the response message in S110. The restoration message from the setting device 20 is effectively received by the reception repeaters 12-1 and 12-2 as in S111 and S112, and the respective relay control units 36 return the channel frequencies B and F to the initial settings.

  If the IDs of the reception repeaters 12-1 and 12-2 are acquired and registered by the setting device 20 in this way, a read command or write specifying the IDs of the reception repeaters 12-1 and 12-2. By transmitting a message including a command, it becomes possible to read and write necessary data from the receiving repeaters 12-1 and 12-2.

  If the lower 3 bits of the IDs set in the plurality of receiving repeaters 12 within the range where the radio waves from the setting device 20 reach coincide with each other, a communication collision of response messages will occur due to selection of the same channel frequency. However, when a communication collision of response messages is detected by the setting device 20, a call message including a command for shifting, for example, 3 bits for selecting the channel frequency of the reception repeater 12 to higher 3 bits is transmitted. By doing so, it is possible to control the channel frequency used for transmission of the response message to be different, and it is possible to reliably avoid the collision of the response message.

(Merit of ID registration operation of receiving repeater by setting device)
According to the ID registration operation of the reception repeater 12 by the setting device 20 shown in FIG. 7, the reception repeater 12 in the range where the radio wave from the setting device 20 reaches can receive a call message without ID designation. When received, the response message is transmitted using mutually different channel frequencies corresponding to its own ID, and the setting device 20 individually receives the response messages from different reception repeaters 12 by frequency sweep that sequentially switches the channel frequency. Even if the transmission timings of the plurality of reception repeaters 12 are received, the channel frequencies are different, so that an ID can be acquired and registered from the response message received for each reception repeater.

  In addition, when the ID registration of all the receiving repeaters 12 within the reach of the radio waves from the setting device 20 is completed, the restoration message is transmitted to return the channel frequency to the initial setting and return to the normal operation state. Is possible.

[Modification of the present invention]
(Repeater node)
In the above embodiment, the case where the ID of the reception repeater functioning as a repeater node is acquired and registered by the setting device is taken as an example. However, the present invention is not limited to this, and an appropriate wireless communication function is provided. This includes the case where the device ID is acquired and registered by the setting device.

(R type receiver)
In the above embodiment, the reception repeater is connected to the sensor line from the P-type receiver as the fire receiver, but the reception repeater is connected to the R-type receiver having a data transmission function. May be.

(Setting device)
In the above embodiment, a case where the dedicated relay is used to access and read / write the reception repeater is taken as an example, but an appropriate portable terminal such as a tablet terminal having a communication function with the reception relay You may make it utilize an apparatus.

(Other)
The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: P-type receivers 12-1 to 12-3: Reception repeaters 14-1 to 14-3: Wireless sensor 16: Sensor line 20: Setting device 22: Sensor control units 24, 38, 62 : Wireless communication unit 28: sensor units 30, 46, 70: display units 32, 44, 72: operation unit 36: relay control unit 40: antenna 42: antenna terminal 45: reception intensity detection unit 48: line communication unit 60: setting Control unit 66: Liquid crystal display 68: Touch panel

Claims (6)

The receiver comprising one or a plurality of sensor nodes, a repeater node and a receiver, wherein a message transmitted by radio from the sensor node is received and processed by the repeater node, and a processing result is connected by a signal line In a wireless disaster prevention system provided with a setting device for reading and writing information by specifying the ID of the repeater node
The setting device includes:
When a call message with no ID designation set with a predetermined response reception strength that decreases stepwise from a predetermined initial value is sequentially transmitted to the repeater node, and a response message is received from the repeater node for the call message The ID of the repeater node included in the response message is acquired and registered, and the sleep request message specifying the registered ID is transmitted to the repeater node, and the ID registration of the repeater node is completed. A setting control unit for transmitting a restoration message to the repeater node in case
The repeater node is
When the reception strength when the call message is received from the setting device is greater than or equal to the response reception strength specified by the call message, a response message including its own ID is transmitted to the setting device, and after the response message is transmitted, A relay control unit that pauses a message transmission operation when the sleep request message is received from a setting device, and cancels the pause when the restoration message is received from the setting device while the message transmission operation is suspended; A wireless disaster prevention system characterized by that.
The receiver comprising one or a plurality of sensor nodes, a repeater node and a receiver, wherein a message transmitted by radio from the sensor node is received and processed by the repeater node, and a processing result is connected by a signal line In a wireless disaster prevention system provided with a setting device for reading and writing information by specifying the ID of the repeater node
The setting device transmits a call message with no ID designation to the repeater node using the initially set channel frequency, and a response from the repeater node to the call message by a frequency sweep that changes the channel frequency in a predetermined frequency range. When a message is received, the ID of the repeater node included in the response message is acquired and registered, and when the ID registration of the repeater node is completed, a restoration message is transmitted by a frequency sweep of the channel frequency. A setting control unit,
When the repeater node receives the calling message from the setting device with the initially set channel frequency, the repeater node sends a response message including its own ID to the setting device with a predetermined response channel frequency corresponding to its own ID. A wireless disaster prevention system, comprising: a relay control unit that transmits and receives the restoration message with the response channel frequency, and returns the channel frequency to the initial setting.
3. The wireless disaster prevention system according to claim 1, wherein the setting control unit of the setting device displays a registration ID on the display unit every time the ID of the repeater node is acquired and registered, and confirms the end of registration. A wireless disaster prevention system characterized in that the recovery message is transmitted when acceptance of an ID registration end operation by the operation unit is detected.
In the wireless disaster prevention system according to claim 1 or 2,
The relay control unit of the relay node registers a correspondence relationship between a node ID and an address of the sensor node assigned in advance,
The wireless disaster prevention system, wherein the setting control unit of the setting device reads and displays a correspondence relationship between the sensor node ID and an address of the repeater node specified by the registered ID.
In the wireless disaster prevention system according to claim 1 or 2,
The relay control unit of the relay node registers a correspondence relationship between a node ID and an address of the sensor node assigned in advance,
The setting control unit of the setting device receives and processes an editing operation including addition, change, or deletion of the correspondence relationship between the sensor node ID and the address of the relay node specified by the registered ID, and an editing result Is transmitted to the repeater node and reflected.
In the wireless disaster prevention system according to claim 1 or 2,
The relay control unit of the repeater node stores history information including transmission of a message from the sensor node and radio wave intensity, transmission of a message processing result to a receiver,
The wireless communication system according to claim 1, wherein the setting control unit of the setting device reads and processes the history information of the repeater node designated by the registered ID.

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