JP5475379B2 - Wireless disaster prevention system, radio relay node and wireless disaster prevention node - Google Patents

Description

The present invention relates to a radio disaster prevention system, a radio wave relay node, and a radio disaster prevention node that transmit an electronically transmitted message from a sensor node such as a wireless sensor to a receiver and warn.

Conventionally, in the wireless disaster prevention system for monitoring fire, to install a plurality of wireless feeling known device as a sensor node in restricted area such as each floor of a building, upon detection of the fire wirelessly sensor, a fire The message shown is wirelessly transmitted to a wireless reception repeater as a wireless disaster prevention node installed on a floor basis. In addition, a radio wave repeater, which will be a radio wave relay node, is installed on the way to relay messages from wireless sensors.

  The radio reception repeater is connected to the sensor line from the receiver. When a message indicating a fire is received, an alarm current is sent to the sensor line when a relay contact or switching element is turned on to generate a fire alarm signal. Send to receiver. Upon receiving this fire alarm signal, the receiver issues a fire alarm by means such as sound.

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.

JP-A-5-274580 JP 2001-290209 A

Incidentally, in such a wireless disaster prevention system, for relaying radio signals from the placed as a child of the radio repeater wireless sensor node ID of wireless sensors in radio repeater device (device ID) previously It is registered and relayed when the transmission ID obtained from the radio signal matches the registered node ID.

  As for the radio reception repeater, when the node IDs of the radio sensor and radio wave repeater for receiving the radio signal are registered in advance, and the transmission ID obtained from the radio signal matches the registered node ID, the receiver A fire alarm signal is sent to.

However, when the node IDs of the wireless sensor and the radio repeater are registered in the radio reception repeater, and the message with the matching node ID is processed as a valid signal, the radio assigned to the radio repeater as a child message even if the message from the formula sensation known device is received directly by the radio reception repeater, which is not treated as a valid telegram because it does not match the node ID registered, which is relayed by a radio wave repeater There is a problem that it takes a long time to receive the message.

  In addition, depending on the propagation environment of radio waves, even if the radio reception repeater can receive signals directly, it may be impossible to receive a radio signal from the radio repeater, reducing the reliability of communication in the radio disaster prevention system. There is always a possibility left.

The present invention relates to a radio disaster prevention system and a radio relay node that can directly receive a signal from a sensor node assigned as a child to a radio relay node even if the radio disaster prevention node has not been assigned, thereby improving communication reliability. And it aims at providing a radio disaster prevention node.

(system)
The present invention includes a plurality of sensor nodes, radio wave relay nodes, radio disaster prevention nodes, and receivers. The radio signal transmitted from the sensor node or the radio signal transmitted from the sensor node via the radio relay node is radio disaster prevention. In a wireless disaster prevention system that receives and processes at a node and sends the processing result to a receiver connected by a signal line,
The radio relay node
A registration unit that registers the node ID of the sensor node assigned to itself and transfers the registered node ID to the wireless disaster prevention node;
A relay processing unit that relays and transmits the received radio signal when the transmission source ID of the received radio signal matches the registered node ID;
With
Wireless disaster prevention node
A registration unit that registers the node ID of the sensor node and the radio relay node assigned to itself, and acquires and additionally registers the node ID of the sensor node registered in the radio relay node;
A reception processing unit that processes the received radio signal and transmits the processing result to the receiver when the transmission source ID of the received radio signal matches the registered or additionally registered node ID;
It is provided with.

The radio relay node of the wireless disaster prevention system of the present invention further transmits a registered node ID to the wireless disaster prevention node, and then generates a verification code compressed based on the registered node ID and transmits the verification code to the wireless disaster prevention node. Part
When the wireless disaster prevention node further receives a verification code from the radio relay node, it generates a verification code based on the node ID acquired and additionally registered from the radio relay node, and matches the verification code received. And a verification receiving unit for notifying the occurrence of a failure when the verification is normally completed and there is a mismatch.

(Radio relay node)
The present invention is a radio relay node that relays and processes a radio signal transmitted from a sensor node to a radio disaster prevention node and transmits a processing result to a receiver connected by a signal line.
A registration unit that registers the node ID of the sensor node assigned to itself and transfers the registered node ID to the wireless disaster prevention node;
A relay processing unit that relays and transmits the received radio signal when the transmission source ID of the received radio signal matches the registered node ID;
It is characterized by providing.

  Here, the radio relay node further includes a verification transmitting unit that generates a verification code based on the registered node ID and transmits the verification code to the wireless disaster prevention node after transferring the registered node ID to the wireless disaster prevention node.

(Wireless disaster prevention node)
The present invention is a radio disaster prevention node that receives and processes a radio signal transmitted from a sensor node or a radio signal transmitted via a radio relay node, and transmits a processing result to the receiver connected by a signal line. In
A registration unit that registers the node ID of the sensor node and the radio relay node assigned to itself, and acquires and additionally registers the node ID of the sensor node registered in the radio relay node;
A reception processing unit that processes the received radio signal and transmits the processing result to the receiver when the transmission source ID of the received radio signal matches the registered or additionally registered node ID;
Is provided.

Further, when the wireless disaster prevention node receives the verification code generated based on the node ID registered from the radio wave relay node, the verification is generated by receiving the verification code from the node ID acquired from the radio relay node and additionally registered. A verification receiving unit is provided that collates with a code and ends the verification normally if they match, and reports a failure if they do not match.

  According to the present invention, the node ID registered in the radio relay node is transmitted to the radio disaster prevention node and registered in advance, and the radio disaster prevention node effectively receives the message received directly from the sensor node assigned to the radio relay node. Since it was processed as a message, if the message relayed by the radio relay node did not arrive for some reason and the message from the sensor node arrived directly, it was processed as a valid wireless signal by matching with the additionally registered node ID Therefore, it is possible to process quickly without depending on relay transmission, and to improve the reliability of communication in the wireless disaster prevention system.

  In addition, in order to confirm whether or not the node ID transferred from the radio relay node to the wireless disaster prevention node has the correct contents, a checksum code as a verification code is generated and transferred from the node ID according to a predetermined conversion procedure. By comparing the verification code received at the disaster prevention node with the verification code generated based on the additionally registered node ID, it can be confirmed that the correct node ID is transferred and additionally registered, and the reliability of communication can be improved.

  Also, the verification code is generated as a compressed code through conversion processing based on a plurality of node IDs, and the communication time required for verification is shortened compared with the case where verification is performed by directly sending the node ID, and verification was performed periodically. Even so, it is possible to minimize the influence on communication due to the fire detection.

In addition, because the node ID of the sensor node registered in the radio relay node is collectively transmitted to the wireless disaster prevention node and additionally registered, the registration operation for individually adding the sensor node to the wireless disaster prevention node becomes unnecessary. , The registration operation at the time of system startup can be easily performed.

Explanatory drawing which showed embodiment of the wireless disaster prevention system by this invention The block diagram which showed the detail of the wireless sensor of FIG. 1, a radio wave repeater, and a radio | wireless reception repeater The block diagram which showed the detail of the repeater for radio | wireless reception of FIG. 1, and a P-type receiver Explanatory drawing which showed the message format of the radio signal transmitted and received by the radio disaster prevention system of FIG. Explanatory drawing which showed the registration content of the relay control table provided in the radio wave repeater and the radio reception repeater of FIG. The flowchart which showed the sensor process by the wireless sensor of FIG. The flowchart which showed the radio wave relay process by the radio wave repeater of FIG. The flowchart which showed the detail of the registration process by FIG.7 S12 Flowchart showing details of the checksum code generation process in step S 23 in FIG. 7 Explanatory drawing which showed the format of the checksum code produced | generated by FIG. The flowchart which showed the relay process for radio | wireless reception by the radio | wireless receiver repeater of FIG. The flowchart which showed the detail of the registration process by step S52 of FIG.

  FIG. 1 is an explanatory view showing an embodiment of a wireless disaster prevention system according to the present invention. In FIG. 1, wireless reception repeaters 12-1 to 12-3 functioning as wireless disaster prevention nodes are installed on the first floor of a building 11 to be monitored and pulled out from the P-type receiver 10, which is a fire receiver, by floor. Connected to the sensor lines 18-1 to 18-3.

  Wireless sensors 16-11 to 16-14, 16-21 to 16-24, and 16-31 to 16-34 functioning as sensor nodes are installed on the floors 1F to 3F. Further, in the present embodiment, the radio wave repeaters 14-1 to 12-3 are prevented from being lost due to the attenuation of radio waves from the radio sensors that are far away from the radio wave repeaters 12-1 to 12-3. 1-14-3 are installed.

  In each of the wireless sensors 16-11 to 16-34 and the radio wave repeaters 14-1 to 14-3, unique node IDs using device IDs are registered in advance. The node ID used in this embodiment is 32-byte data.

  The wireless reception repeaters 12-1 to 12-3, the radio wave repeaters 14-1 to 14-3, and the wireless sensors 16-11 to 16-34 have a wireless network built by floor. For each floor, a network address (hereinafter simply referred to as “address”) is set.

Here, 1F will be described as an example. The node IDs of the wireless sensors 16-11 to 16-14 are as follows, for example.
Wireless sensor 16-11: 00000001
Wireless sensor 16-12: 00000002
Wireless sensor 16-13: 00000003
Wireless sensor 16-14: 00000004
Radio repeater 14-1: 00000101

The addresses of the wireless reception relay 12-1, the wireless sensors 16-11 to 16-14, and the radio relay 14-1 are as follows, for example.
Wireless reception repeater 12-1: 0-0
Wireless sensor 16-11: 0-1
Wireless sensor 16-12: 0-2
Wireless sensor 16-13: 0-3
Wireless sensor 16-14: 0-4
Radio wave repeater 14-1: F-1
The node ID and address are displayed in hexadecimal.

  The wireless sensors 16-11 to 16-14 determine a fire when the smoke concentration or temperature due to the fire exceeds a predetermined threshold, and wirelessly transmit a telegram signal indicating the fire (hereinafter simply referred to as “telegram”). .

  In each of the radio wave repeater 14-1 and the radio reception repeater 12-1, a node ID for specifying a transmission source as a child node that receives a message based on the parent-child relationship is registered in advance. That is, node IDs of the wireless sensors 16-13 and 16-14 and the radio relay 14-1 that are child nodes are registered in advance in the wireless reception repeater 12-1. Also, node IDs of the wireless sensors 16-11 and 16-12 that are child nodes are registered in advance in the radio wave repeater 14-1.

  The same applies to the 2F and 3F wireless reception repeaters 12-2 and 12-3 and the radio wave repeaters 14-2 and 14-3, and the wireless reception repeater 12-2 includes the wireless sensor 16-. 23, 16-24 and the node IDs of the radio repeaters 14-2 are registered in advance, and the radio repeater 14-2 registers the node IDs of the wireless sensors 16-21 and 16-22, and the radio reception repeaters 12-3 registers the node IDs of the wireless sensors 16-33 and 16-34 and the radio relay 14-3, and the radio relay 14-3 stores the node IDs of the wireless sensors 16-31 and 16-32. Is registered.

  When a telegram is received by registering the node ID for the radio reception repeater 12-1 and the radio repeater 14-1, the transmission source ID included in the telegram is compared with the node ID registered in advance. For example, when both match, it is processed as a valid message.

  Furthermore, in the present embodiment, the wireless reception repeater 12-1 receives directly from the wireless sensors 16-11 and 16-12 that are not in a parent-child relationship without going through the radio wave repeater 14-1. In order to enable processing as a valid electronic message, the registered node ID is transferred from the radio wave repeater 14-1 to the wireless reception repeater 12-1, and is additionally registered. Even when a message is received directly from the wireless sensors 16-11 and 16-12 that are not assigned as child nodes in the device 12-1, a match with the additionally registered node ID is determined and a valid message is received. Can be processed as.

  When the radio wave repeater 14-1 receives a message from the wireless sensors 16-11 and 16-12, it compares the message transmission source ID with the registered node ID, and the two match. Is relayed to the wireless reception repeater 12-1 as an effective message.

  When the wireless reception repeater 12-1 receives a message from the wireless sensors 16-13 and 16-14 assigned as the child nodes, the wireless transmission repeater 12-1 determines the transmission source ID of the message and the registered node ID. When the two match, the received message is processed as a valid message, and the processing result is transmitted to the P-type receiver 10.

  When the received electronic message is a message indicating a fire from the wireless sensor, the wireless reception repeater 12-1 sends a notification current as a contact output to the sensor line 18-1 to the P-type receiver 10. A fire alarm signal is transmitted by flowing.

  The wireless reception repeater 12-1 is registered in advance with the transmission source ID included in the electronic message even when the electronic message is received from the wireless sensors 16-11 and 16-12 via the radio wave repeater 14-1. The received message is received as a valid message by matching the received node ID, and the reception result is transmitted to the P-type receiver 10.

  Further, the wireless reception repeater 12-1 is additionally registered with the transmission source ID of the received message even when the message is directly received from the wireless sensors 16-11 and 16-12 which are not assigned. Compared with the node ID, if both match, the message is processed as a valid message, and the processing result is transmitted to the P-type receiver 10.

  In the present embodiment, it is monitored that the radio wave repeater 14-1 and the wireless sensors 16-11 to 16-14 are operating normally, i.e., no carry-out or battery exhaustion has occurred. Therefore, each of the nodes periodically transmits a periodic notification message.

  In response to the transmission of the periodic notification message from the wireless sensors 16-11 to 16-14 and the radio wave repeater 14-1, the wireless reception repeater 12-1 matches the node ID registered with the transmission source ID of the message. When the message is received as a valid message, the periodic notification timer provided for each registered node ID is reset and started. However, if the periodic notification timer expires after a predetermined period of time without receiving a periodic notification message, it is determined that the node is not operating properly and the periodic notification is abnormal. Notify the receiver 10 of the occurrence of a failure.

  For example, the failure occurrence notification notifies the occurrence of a failure due to abnormal periodic notification by disconnecting the terminal resistor connected to the sensor line 18-1 from the P-type receiver 10 to create a pseudo disconnection state.

FIG. 2 is a block diagram showing the details of the 1F wireless sensor 16-11, radio wave repeater 14-1, and wireless reception repeater 1 2 -1 provided in the embodiment of FIG. .

  In FIG. 2, a wireless sensor 16-11 as a sensor node includes a processor 20, a wireless communication unit 22, an antenna 24, a sensor unit 26, an operation unit 28 using a dip switch, and a battery 30. The sensor unit 26 is a temperature detection unit using, for example, a photoelectric smoke sensing unit or a thermistor.

  The processor 20 is provided with a sensor processing unit 58 as a function realized by executing a program. The sensor processing unit 58 compares, for example, a smoke concentration detection signal output from the sensor unit 26 with a predetermined threshold value, determines that a fire has occurred when the threshold value is exceeded, and sends a message indicating the fire from the antenna 24 from the wireless communication unit 22. Wireless transmission.

  Further, when the registration mode is set by the dip switch or the like of the operation unit 28, the sensor processing unit 58 transmits an activation message or a test message in which a node ID known as a device ID is set as a transmission source ID, and the radio wave repeater 14-1 To register the node ID.

  The wireless communication unit 22 is provided with a transmission circuit, and in the case of Japan, for example, performs wireless communication according to the standard of a specific low-power wireless station in the 400 MHz band. Note that the wireless sensor 16 only transmits a telegram to the receiver side, and therefore no receiving circuit is provided in this embodiment.

  Further, the channel frequency of the wireless communication unit 22 uses any one of four channel frequencies f1 to f4 that can be used in the specific low power wireless station standard of the 400 MHz band. The channel frequencies may be the same on each floor in FIG. 1, or different channel frequencies may be used on adjacent floors, for example, to avoid interference.

  The radio wave repeater 14-1 includes a processor 32, a wireless communication unit 34 including a reception circuit and a transmission circuit, an antenna 35, an operation unit 36, a display unit 37, a memory 38, and a power supply unit 40. The processor 32 is provided with a relay processing unit 60, a registration processing unit 62, and a verification transmission unit 64 as functions realized by executing the program.

  When the registration processing unit 62 starts using the radio wave repeater 14-1 by operating a registration switch provided in the operation unit 36, the registration processing unit 62 is assigned to the relay control table 66 of the memory 38 as shown in FIG. The node IDs of the wireless sensors 16-11 and 16-12 are registered.

  When registering the node IDs of the wireless sensors 16-11 and 16-12, the sensor registration address is designated using, for example, a 7-segment display of the display unit 37, and then the DIP switch of the operation unit 36 is used. In this state, a registration waiting state is set, and in this state, an activation message or a test message transmitted from the wireless sensors 16-11 and 16-12 is received, a transmission source ID included in the message is acquired, and relay control is performed. The node ID is registered in the table 66.

In the case of displaying the registered address using the display unit 37 on the operation unit 36, if the unregistered 7 segment indicator blink, 7-segment display if it has already been registered is lighted.

Furthermore, each time the registration processing unit 62 registers the assigned node IDs of the wireless sensors 16-11 and 16-12 in FIG. 1 in the relay control table 66, the registered processing unit 62 reads out the registered node IDs and relays them for wireless reception. transfer the registration message to the vessel 1 2 -1 to perform the additional registration in a wireless receiver for relay 1 2 -1 side.

Verifying transmission unit 64, after adding register transfers the node ID registered in the relay control table 66 to the wireless reception relay 1 2 -1, upon operating a test switch of the operating unit 36, registered a verification data compressed generated based on the node ID transmits a startup or test message was set checksum code to perform the verification processing of additional registration node ID in a radio receiver for relay 1 2 -1 side.

Transmission validation code by verifying transmission unit 64, after registration completion by the registration processing unit 62, performs in order the confirmation may be performed periodically in further subsequent normal monitoring state. For example the radio repeater 14-1 per that sends periodic notification message, transmit a validation message including a validation code, may be performed to verify.

  The relay processing unit 60 operates in a monitoring state after the registration of the node ID to the relay control table 66 is completed, and when the wireless communication unit 34 receives a fire message, a periodic notification message, or the like transmitted from the wireless sensor. The transmission source ID included in each message is acquired and compared with the node ID registered in the relay control table 66. When the two match, the received message is relayed. If the two match, the relay transmission is performed. Do not do.

  The power supply unit 40 converts commercial AC 100 volts into a DC power supply, and includes a battery as a backup power supply as necessary. The power supply unit 40 is not limited to such a configuration, and for example, a battery power supply similar to the wireless sensor 16-11 may be employed.

The wireless reception repeater 1 2 -1 includes a processor 42, a wireless communication unit 44 including a reception circuit, an antenna 46, a wired communication unit 48, an operation unit 50, a display unit 52, a memory 54, and a power supply unit 56. .

The processor 42 is provided with a reception processing unit 68, a registration processing unit 70, and a verification reception unit 72 as functions realized by executing the program. In addition, a relay control table 74 is provided in the memory 54, and as shown in FIG. 1, the wireless sensors 16-13 and 16-14 assigned to the wireless reception repeater 1 2 -1 as child nodes and radio wave relays. The node ID of the device 14-1 is registered.

The registration processing unit 70 registers a node ID with respect to the relay control table 74. When registering the node IDs of the wireless sensors 16-13 and 16-14 and the radio wave repeater 14-1, the registration address of the sensor or the radio wave repeater using, for example, a 7-segment display of the display unit 52 Next, a registration waiting state is set by a dip switch or the like of the operation unit 50, and in this state, an activation message transmitted from the wireless sensors 16-13, 16-14 or the radio relay 14-1 or The test message is received, the transmission source ID included in the message is acquired and registered in the relay control table 74.

  The registration processing unit 70 completes registration of the node IDs of the wireless sensors 16-13 and 16-14 and the radio repeater 14-1 assigned as child nodes, and then performs registration processing of the radio repeater 14-1. When the registration request message including the node ID registered in the relay control table 66 transmitted by the unit 62 is received, the node IDs of the wireless sensors 16-11 and 16-12 acquired from the registration request message are displayed. It is additionally registered in the relay control table 74. In this case, since the address of the radio repeater 14-1 as the parent node is also sent at the same time, this is also registered.

  After the registration processing unit 70 completes the registration of the node ID in the relay control table 74 by the registration processing unit 70 and the additional registration of the node ID by the transfer from the radio relay 14-1, the verification transmission of the radio relay 14-1 is completed. The checksum code acquired from the message, and the radio wave additionally registered in the relay control table 74 at that time, when the activation or test message including the checksum code as the verification code transmitted by the unit 64 is received. The checksum code generated based on the node ID transferred from the repeater 14-1 is compared, and when the two match, the node ID additionally registered in the relay control table 74 is assumed to be correct and the process proceeds to the monitoring process. To do.

  On the other hand, if the checksum code does not match, the relay control table 74 has additionally registered an incorrect node ID. In this case, it is determined as a failure and the P-type receiver 10 is informed. Notification of the occurrence of the failure is made, and then the registration process is performed again.

  The reception processing unit 68 compares the transmission source ID included in each message with the node ID registered and additionally registered in the relay control table 74 when the wireless communication unit 44 receives a fire message or a periodic notification message. When the two match, the received message is processed, and the other messages are ignored without being processed.

  When the reception processing unit 68 receives and processes a fire telegram by matching the node ID, the fire communication signal P is transmitted by the contact output operation of the wired communication unit 48 that causes the detection current to flow through the sensor line 18-1. To the receiver 10.

  When the reception processing unit 68 determines a wireless sensor or radio wave repeater that does not receive the periodic notification message and becomes abnormal in periodic notification, disconnect the disconnection detection resistor connected to the end of the sensor line 18-1. By creating a pseudo disconnection state, the P-type receiver 10 is notified of the occurrence of a failure due to a periodic report abnormality.

  Further, as shown in FIG. 1, the power supply unit 56 is supplied with DC power from the receiver 10 through the power line 15. However, the DC power may be converted from commercial AC 100 volts to create a power supply. However, a battery power source may be adopted.

Figure 3 is taken out radio reception relay 1 2 -1 and P-type receiver 10 of FIG. 1 is a block diagram showing the details, the radio reception relay 1 2 -1 same as FIG. 2 Is shown as it is.

  In FIG. 3, the P-type receiver 10 includes a processor 76 that functions as a control unit, line receiving units 78-1 to 78-3, a power supply unit 80, a display unit 82, an acoustic alarm unit 84, an operation unit 86, a transfer report. Unit 88 and nonvolatile memory 90. In addition, the operation power supply uses the commercial power supply appropriately backed up (not shown).

As shown in FIG. 1, sensor lines 18-1 to 18-3 are drawn out from the line receiving units 78-1 to 78-3, respectively, and the wireless reception repeater 12 − is connected to the sensor line 18-1. 1 is connected.

Line receiver unit 78-1 detects the alarm current flowing in the contact operation by the wired communication unit 48 provided in the radio reception relay 1 2 -1, to the processor 76 and outputs a fire detection signal. The disconnection of the terminating resistor in the wired communication unit 48 of the radio reception relay 1 2 -1 detects the interruption of the monitoring current when the actual disconnection of the sensor lines, and outputs a failure detection signal to the processor 76.

  The processor 76 includes a CPU, a ROM, a RAM, an AD conversion port, and various input / output ports, and realizes the function of the fire monitoring unit 92 by executing a program by the CPU.

  When the fire monitoring signal is obtained by detecting the alarm current by any of the line receivers 78-1 to 78-3, the fire monitoring unit 92 determines that the corresponding alarm line fires, A representative fire display is displayed on the display unit 82, and a district display is performed for each line. An acoustic fire alarm is output from the acoustic alarm unit 84.

  When the fire monitoring unit 92 detects the disconnection of the sensor lines 18-1 to 18-3 by the line receiving units 78-1 to 78-3, the fire monitoring unit 92 displays a representative fault on the display unit 82 and generates a fault. The district is displayed for each line, and an acoustic failure warning is output from the acoustic warning unit 84.

  FIG. 4 is an explanatory diagram showing a message format of a message received by the wireless reception repeaters 12-1 to 12-3 in FIG.

  In FIG. 4, the message format 94 includes a phase correction signal 96, a serial number 98, a transmission source ID 100, a data code 102, and an error check code 104. The phase correction signal 96 is a preamble signal that repeats with “101010... 10” having a predetermined bit length, and can thereby prepare for reception by phase synchronization of a reception PLL provided in the wireless communication unit.

  The serial number 98 stores a value that changes in order within a range of 0 to 255 every time a message is transmitted, and the receiving side can know the order of message transmission. In the transmission source ID 100, the node ID of the transmission source device is set, and in the present embodiment, for example, the data is 32 bytes.

  The data code 102 is information indicating the contents of the message, and the contents shown in the format of the device status message 106, the failure message 108, the registration request message 110, and the start or test message 112 set in the data code 102 are shown below. Is done.

  In the device status message 106, a device status code 114 is set in the data code 102, and the device status code 114 indicates a status such as fire, initial transmission after recovery, transmitter operation, and the like. In the failure message 108, the device status code 114 and the failure content code 116 are set in the data code 102 portion.

The portion of the registration request message 110 is data code 102, a parent address 118, the address of the child 120 and child node ID122 is set, the node for the radio reception relay 1 2 -1, repeater control table 74 2 Used for additional registration of IDs.

Startup or test message 112 portion of the data code 102, own address 124, checksum code 126, equipment status code 114及beauty failure content code 116 is set, relay 1 2 -1 for wireless reception of Figure 2 The node ID additionally registered in the repeater control table 74 is used for verification. Note that the activation or test message transmitted to register the node ID from the wireless sensor 16-11 in FIG. 2 is a message excluding the checksum code 126.

Figure 5 is an explanatory diagram showing the registered contents of the relay control table 66, 74 provided in the radio repeater 14-1 and the radio reception relay 1 2 -1 of FIG.

5 (A) is a registered content of the relay control table 74 provided in the radio reception relay 1 2 -1 2, address, node ID, parent address and direct child node is registered. In the present embodiment, for example, up to eight wireless sensors and up to two radio wave repeaters can be registered in the relay control table 74.

The radio reception relay 1 2 -1, as shown in FIG. 1, the wireless sensor 16-1 3, are assigned 16-1 4 and Telecommunications repeater 14-1, each node ID Is a wireless sensor 16-1 3 : 00000003
Wireless sensor 16-1 4 : 00000004
Radio wave repeater 14-1: 0000 01 01
Therefore, by specifying the address “0-3”, “0-4”, or “F-1” while waiting for registration, the sender ID is obtained from the activation or test message received at that time. to register as a node ID to the specified address of the relay control table 74 provided in the radio reception relay 1 2 -1. At the same time, the registered address of the wireless reception relay 1 2 -1 "0-0" as a parent address, also wireless sensor 16-1 3, 16-1 4 and Telecommunications repeater 14-1 directly A flag “1” indicating that it is a child node of is registered.

  As described above, when registering the node ID in the relay control table 74, the registration operator does not need to be aware of the individual node IDs, and can recognize the addresses on the network of the wireless sensor and the radio relay to be registered. good.

FIG. 5B shows the registration contents of the relay control table 66 provided in the radio wave repeater 14-1 of FIG. As shown in FIG. 1, the radio repeater 14-1 is assigned wireless sensor 16-11,16-1 2, each node ID are wireless sensors 16-11: 00000001
Wireless sensor 16-12: 00000002
Therefore, by specifying the address “0-1” or “0-2” while waiting for registration, the source ID is acquired from the activation or test message received at that time, and the relay control table 66 is specified. Registered as the node ID at the address. At the same time, the address of the radio repeater 11-1 "F-1" is registered as a parent address, also wireless sensor 16-1 1, 16-1 2 direct child node of the radio repeater 14-1 A flag “1” indicating that is set.

Such FIG 5 (A) (B) Registration of a node ID assigned to the relay control table 66 of the relay control table 74, and a radio relay 14-1 of the radio receiving relay 1 2 -1 shown in is performed Then, the radio repeater 14-1 reads the node ID and the parent address registered in the relay control table 66 shown in FIG. 5B, and registers the radio reception repeater 1 2 -1 as shown in FIG. The node ID and the parent address transferred to the relay control table 74 that is transmitted by the request message 110 and is in the registration state in FIG. 5A are additionally registered as shown in FIG. registering a flag "0" indicating that it is not a direct child node for vessels 1 2 -1.

The additional registration shown in FIG. 5 (C), the radio reception relay 1 2 -1 shown in Fig. 2, not only the message of the node ID assigned thereto, are assigned to the radio repeater 14-1 It is also possible to process a message with a node ID as a valid message.

  FIG. 6 is a flowchart showing sensor processing by the wireless sensor 16-11 in FIG. 2 and is realized by execution of a program by the processor 20. In FIG. 6, after initialization and self-diagnosis are performed in step S1, the sensor process proceeds to step S2 if normal, and determines whether or not the registration mode is set.

  When the registration mode is set by a dip switch or the like provided on the operation unit 28 of the wireless sensor 16-11, an ID registration start message or test message is transmitted in step S3. At this time, if the registration address is specified by the DIP switch of the operation unit 36 of the corresponding radio wave repeater 14-1 and the registration waiting state is set in the registration processing unit 62, the message transmitted in step S3 is received. Then, automatic registration is performed in which the transmission source ID included in the received electronic message is extracted and registered as a node ID in the relay control table 66.

  If it is determined in step S4 that the registration mode is cancelled, the process proceeds to step S5 to determine whether or not a fire is detected. At this time, for example, if a smoke detection signal from the sensor unit 26 exceeds a predetermined threshold, a fire is determined, and a fire telegram is transmitted in step S6.

  Subsequently, in step S7, it is determined whether or not the periodic notification timer has expired. If it is determined that the periodic notification timer has expired, a periodic notification message is transmitted in step S8, and then the periodic notification timer is reset and started in step S9. To do.

  In sensor processing, in addition to fire and periodic notifications, a message such as a failure or recovery is transmitted, but this is omitted.

  FIG. 7 is a flowchart showing a radio wave relay process by the radio wave repeater 14-1 in FIG. 2, which is a process realized by executing a program by the processor 32.

  In FIG. 7, in the radio wave relay process, after performing initialization and self-diagnosis upon power-on in step S11, if there is no abnormality, a relay control table registration process is executed in step S12. Details of the relay control table registration process in step S12 are shown in the flowchart of FIG.

  When the registration process of step S12 is completed, the monitoring state is entered, and whether or not a message has been received is determined in step S13. If it is determined in step S13 that the message has been received, the process proceeds to step S14, where the received message is analyzed, and the transmission source ID obtained from the message in step S15 is compared with the node ID of the table registration registered in the relay control table 66. If a match is determined in step S16, the process proceeds to step S17 as a valid received message, and the received message is relayed and transmitted.

Then has been determined whether or not periodic report timer has timed in step S18, when it is determined time-up, after transmitting the periodic report message at step S19, the reset start periodic report timer in step S2 1. In addition, when transmitting a verification message | telegram whenever it transmits a regular notification message | telegram from the radio relay 14-1, a checksum code is produced | generated and transmitted by step S20 after step S19.

Subsequently and to determine whether the table validation request operation, such as push button operation in Step S2 2, when it is determined there is required the process proceeds to step S23, additional registration to relay control table 74 of the radio reception relay 1 2 -1 A checksum code for verifying the node ID is generated, and the activation or test message 112 of FIG. 4 in which the checksum code is set is transmitted in step S24, and the processing from step S13 is repeated again.

  FIG. 8 is a flowchart showing details of the registration process in step S12 of FIG. In FIG. 8, in the registration process in the radio repeater 14-1, an unregistered registered address is displayed and specified on the display unit 37 by operating a dip switch of the operation unit 36 in step S31, and a registration waiting state is set. .

  Subsequently, the process proceeds to step S32, and it is determined whether or not the activation or test message transmitted for registration from the wireless sensor 16-11 to be registered is received. If it is determined in step S32 that the activation or test message has been received, the transmission source ID is acquired from the message in step S33, and the transmission source ID is registered as a node ID in the designated address of the relay control table 66 in step S34.

  Subsequently, in step S35, the registration request message 110 shown in FIG. 4 is transmitted in which the node ID registered in the table is set together with the parent address and the child address. Such node ID table registration is repeated until the registration waiting state is canceled in step S36.

FIG. 9 is a flowchart showing details of the checksum code generation process in step S23 of FIG. 7, and is as follows.
Step S41:
A 32-bit bit string is read from the 32-byte node ID.
Step S42:
A 32-bit string is divided into values of upper 16 bits and lower 16 bits.
Step S43:
The sum of the upper 16 bits and the lower 16 bits is calculated. Carrying out of the 16-bit range is ignored. Here, for example, a 16-bit string “1100110010101010” is obtained.
Step S44:
The 16-bit string obtained in step S43 is divided into upper 8 bits “11001100” and lower 8 bits “10101010”.
Step S45:
The upper 8 bits “11001100” obtained in step S44 is logically exclusive with the address “0-3” corresponding to the node ID, for example, “0000 0011” in binary, to generate “11001111”. Similarly, the lower 8 bits “10101010” obtained in step S44 are exclusive-ORed with “00000011” to generate “10101001”.
Step S46:
The upper and lower 8-bit strings generated in step S45 are combined to generate a 16-bit string “1100111110101001”.
Step S47:
Steps S41 to S46 are repeated for all node IDs.
Step S48:
A checksum is generated from all node IDs for the 16-bit string generated in step S46, and the process returns to FIG. The checksum calculation method in this case is, for example, “1's complement of 1's complement sum”.

  FIG. 10 shows the format of the checksum code generated by the process of FIG. The checksum code 126 divides the plurality of 16-bit strings generated in step S45 into upper 8 bits and lower 8 bits, calculates checksum values b0-b7, b10-b17 for each, and further calculates the calculated checksum values Is a 20-bit code to which determination bits b8 and b18 indicating that they are odd and determination bits b9 and b19 indicating that they are even are added.

Figure 11 is a flow chart showing a radio reception relay processing according to the radio reception relay 1 2 -1 of FIG. In FIG. 11, when the radio reception repeater 12-1 is turned on, initialization and self-diagnosis are executed in step S51. If there is no abnormality, registration processing of the relay control table 74 is executed in step S52. . Details of the registration process in step S52 are shown in FIG.

  When the registration process is completed, the monitoring state is entered. In step S53, it is determined whether or not a message has been received. If a message is received and determined, the message is analyzed in step S54, and the transmission source ID and relay control obtained from the message in step S55. The node IDs of the table registrations registered in the table 74 are compared, and if it is determined in step S56 that they match, the process proceeds to step S57 as a valid telegram. If a fire is determined, the sensor line 18 is detected in step S58. A fire alarm signal is transmitted to the P-type receiver 10 by causing a alarm current to flow through the contact output.

  If it is determined in step S59 that the message is a periodic notification message, the process proceeds to step S60, and the periodic notification timer of the corresponding node specified by the transmission source ID is reset and started.

  If it is determined in step S61 that the message is a verification request message, the process proceeds to step S62, and verification processing of the node ID additionally registered in the relay control table 74 is executed. The details of this verification process are the same as steps S77 to S81 in FIG.

  Subsequently, in step S63, it is checked whether or not there is a periodic notification timer that has timed up. If there is a periodic notification timer that has expired, it is determined in step S64 that the periodic notification is abnormal, and the sensor line 18 is put into a pseudo disconnection state. Thus, a failure signal is sent to the P-type receiver to output a failure alarm.

FIG. 12 is an explanatory diagram showing details of the registration process in step S52 of FIG. Registration process in FIG. 12, designated by displaying the address to be registered destination on the display unit 5 2 by a dip switch of the operation unit 50 in step S71, then sets the registration wait state. Subsequently, the process proceeds to step S72, where it is determined whether or not a startup message or a test message transmitted from the wireless sensors 16-13 and 16-14 or the radio relay device 14-1 to be registered has been received.

  When it is determined in step S72 that the activation or test message has been received, the transmission source ID, parent address, and child address are acquired from the message received in step S73, and the transmission source ID is set in the relay control table 74 as shown in FIG. The node ID and the parent address are registered at the designated registration address, and flag 1 indicating the direct child node is set.

  Subsequently, when it is determined in step S74 that the registration waiting state is cancelled, the process proceeds to step S75, where the registration request message 110 including the registered parent address, child address, and child node ID shown in FIG. If the registration request message 110 is received, the node ID and parent address acquired from the registration request message 110 are additionally registered in the relay control table 74 in step S76, and it is determined that the node is not a direct child node. The flag is reset to 0.

  Subsequently, the process proceeds to step S77, and it is determined whether or not a verification message including the activation or test message 112 shown in FIG. If the verification message is received and determined in step S77, the process proceeds to step S78, and a checksum code is generated based on the node ID additionally registered in the relay control table 74. The checksum code is generated in step S78 through the process shown in FIG.

  Subsequently, in step S79, the received checksum code is compared with the generated checksum code. If a match is determined in step S80, the process returns to FIG. 11, and if not, the fault light on the display unit 52 is turned on in step S81. Then, a failure signal is sent to the P-type receiver 10 to notify the occurrence of the failure.

  In the above embodiment, a wireless reception repeater is connected to a sensor line from a P-type receiver as a fire receiver, but a wireless reception repeater is connected to an R-type receiver having a data transmission function. You may do it.

  In the above embodiment, the checksum code compressed in accordance with the procedure shown in FIG. 9 is used as a verification code in order to verify the node ID transferred from the radio repeater to the radio reception repeater and additionally registered. It is verified by generating and transferring, but if the data amount of the node ID registered in the table is small, it can be verified by directly transferring and collating the node ID itself without compression conversion. Good.

  The generation of the checksum code as the verification code is not limited to the above-described embodiment, and a verification code by appropriate conversion can be used as long as the verification code is generated by compression from the node ID to be verified.

  In addition, the flowcharts in the above-described embodiments have described a schematic example of processing, and the order of processing is not limited to this. Further, it is possible to provide a delay time between each process or between processes, insert another determination, or the like.

  The failure alarm output method shown in the above embodiment is merely an example, and other methods may be adopted.

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: Radio reception repeaters 14-1 to 14-3: Radio wave repeaters 15: Power supply lines 16-11 to 16-34: Wireless sensors 18-1 to 18-1 18-3: Sensor lines 20, 32, 42, 76: Processors 22, 34, 44: Wireless communication units 26, 35, 46: Antenna 26: Sensor units 28, 36, 50, 86: Operation unit 30: Battery 38 , 54: Memory 40, 56, 80: Power supply unit 48: Wired communication unit 52, 82: Display unit 58: Sensor processing unit 60: Relay processing unit 62, 70: Registration processing unit 64: Verification transmission unit 66, 74: Relay Control table 68: Reception processing unit 72: Verification receiving unit 78-1 to 78-3: Sensor line 84: Acoustic alarm unit 88: Transfer unit 90: Non-volatile memory 92: Fire monitoring unit 94: Message format 110: Registration request electric sentence 112: start-up or Test message

Claims (3)

The wireless disaster prevention node includes a plurality of sensor nodes, a radio relay node, a radio disaster prevention node, and a receiver, and a radio signal transmitted from the sensor node or a radio signal transmitted from the sensor node via a radio relay node In the radio disaster prevention system that receives and processes the data and transmits the processing result to the receiver connected by a signal line,
The radio wave relay node is
Registering the node ID of the sensor node assigned to itself, and transferring the registered node ID to the wireless disaster prevention node;
After transmitting the registered node ID to the wireless disaster prevention node, a verification transmission unit that generates a verification code compressed based on the registered node ID and transmits it to the wireless disaster prevention node;
A relay processing unit that relays and transmits the received radio signal when the transmission source ID of the received radio signal matches the registered node ID;
With
The wireless disaster prevention node is
A registration unit that registers the sensor node assigned to itself and the node ID of the radio relay node, and acquires and additionally registers the node ID of the sensor node registered in the radio relay node;
When a verification code is received from the radio relay node, a verification code is generated based on the node ID acquired from the radio relay node and additionally registered, and the verification code is collated. And a verification receiver for notifying a failure in the case of a mismatch,
A reception processing unit that processes a received wireless signal and transmits a processing result to the receiver when a transmission source ID of the received wireless signal matches a registered or additionally registered node ID;
A wireless disaster prevention system characterized by comprising:
In the radio wave relay node that relays the radio signal transmitted from the sensor node to the radio disaster prevention node and processes it, and transmits the processing result to the receiver connected by the signal line.
Registering the node ID of the sensor node assigned to itself, and transferring the registered node ID to the wireless disaster prevention node;
After transmitting the registered node ID to the wireless disaster prevention node, a verification transmission unit that generates a verification code based on the registered node ID and transmits the verification code to the wireless disaster prevention node;
A relay processing unit that relays and transmits the received radio signal when the transmission source ID of the received radio signal matches the registered node ID;
A radio relay node characterized by comprising:
In a radio disaster prevention node that receives and processes a radio signal transmitted from a sensor node or a radio signal transmitted via a radio relay node, and transmits a processing result to the receiver connected by a signal line,
A registration unit that registers the sensor node assigned to itself and the node ID of the radio relay node, and acquires and additionally registers the node ID of the sensor node registered in the radio relay node;
When the verification code generated based on the node ID registered from the radio relay node is received, the verification code is generated from the node ID acquired from the radio relay node and additionally registered, and collated with the received verification code, A verification receiver that normally terminates the verification if they match, and that reports a failure if they do not match;
A reception processing unit that processes a received wireless signal and transmits a processing result to the receiver when a transmission source ID of the received wireless signal matches a registered or additionally registered node ID;
A wireless disaster prevention node characterized by comprising:

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