JP6453391B2 - Alarm system, repeater node and radio wave relay node - Google Patents

Description

  One embodiment of the present invention relates to an alarm system, a repeater node, and a radio wave relay node.

  2. Description of the Related Art Conventionally, as an example of an alarm system, an automatic fire notification system that monitors the occurrence of a fire in a predetermined monitoring area (warning area) and warns of the occurrence of the fire is known. In recent years, there is also a wireless system that wirelessly transmits a signal indicating the occurrence of a fire.

  For example, if one or more wireless sensors are installed in each warning area such as each floor of a building or the like, and the occurrence of a fire is detected by any of the wireless sensors, the wireless signal indicating the occurrence of the fire is the same. It is installed on the floor and transmitted to the wireless reception repeater corresponding to the line of the wireless sensor. The wireless reception repeater is connected to the fire receiver via a sensor line. When a signal indicating the occurrence of a fire is received wirelessly from the wireless sensor, a fire alarm signal is transmitted to the fire receiver. And a fire receiver will issue a fire alarm, if a fire alert signal is received.

JP 2010-041545 A

  However, the prior art only describes the communication mode for each warning area, and the communication mode between the warning areas has not been studied.

  One of the objects of the present invention is to enable two-way communication between warning areas in an alarm system so as to improve system performance and system user convenience.

  In addition, the present invention is not limited to the above-described object, and other effects of the present invention can be achieved by the functions and effects derived from the respective configurations shown in the embodiments for carrying out the invention which will be described later. It can be positioned as one of

One aspect of the alarm system of the present invention is a radio relay node that transmits an event signal indicating that an event that should generate an alarm has occurred in a monitoring area to the outside and holds a transmission history of the transmitted event signal; A plurality of relay nodes that receive event signals from radio wave relay nodes installed correspondingly and hold reception histories of the received event signals. Repeater nodes corresponding to different radio wave relay nodes are connected by a bidirectional transmission path. The repeater node (1) transmits the transmission history to the repeater node according to the command received by the radio wave relay node from the repeater node, and the repeater node checks the consistency between its own event signal reception history and the transmission history. (2) The relay node transmits its own event signal reception history to the radio relay node, and the radio relay node confirms the consistency between the received event signal reception history and the transmission history of the relay node. Thus, the consistency between the event signal reception history and the transmission history is confirmed.

Communication may be performed between a first radio wave relay node that is in communication connection with the first repeater node and a second radio wave relay node that is in communication connection with the second repeater node.

The alarm system may further include a receiver that performs an alarm process in response to receiving an event signal from the repeater node.

It is a figure which shows the structural example of the automatic fire alerting | reporting system which is an example of the alarm system of this embodiment. FIG. 2 is a block diagram illustrating a configuration example of a wireless reception repeater, a wireless sensor, and a radio wave relay illustrated in FIG. 1. It is a figure which shows an example of the format of the command used by this embodiment. It is a figure which shows an example of the information management table used by this embodiment. It is a flowchart which shows an example of the alerting event process in this embodiment, and a survival confirmation process. It is a flowchart which shows an example of the alerting event process in this embodiment, and a survival confirmation process. It is a flowchart which shows an example of the alerting event process in this embodiment, and a survival confirmation process. It is a flowchart which shows an example of the connection confirmation process in this embodiment. It is a flowchart which shows an example of the information acquisition process in this embodiment. It is a flowchart which shows an example of the information acquisition process in this embodiment. It is a flowchart which shows an example of the information acquisition process in this embodiment. It is a sequence diagram which shows an example of the connection confirmation process in this embodiment. It is a sequence diagram which shows an example of the information acquisition process in this embodiment. It is a sequence diagram which shows an example of the information acquisition process in this embodiment.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. However, the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described below. That is, the present invention can be implemented with various modifications (for example, combining the embodiments) without departing from the spirit of the present invention.

(Configuration of automatic fire alarm system)
FIG. 1 is a diagram illustrating a configuration example of an automatic fire alarm system 1 that is an example of an alarm system according to the present embodiment. The automatic fire alarm system 1 illustrated in FIG. 1 (hereinafter also simply referred to as “system 1”) targets a building 2 such as a building as a monitoring target. The automatic fire alarm system 1 includes, for example, a P-type or R-type receiver 3, one or more wireless reception repeaters 5, one or more wireless sensors 6, and one or more radio relays 7.

  Here, each of the wireless sensors 6 is operated by a built-in battery power source. For this reason, it is not necessary to wire not only the signal line but also the power supply line, and the convenience in installation can be improved. The same can be applied to the radio wave repeater 7.

  The wireless reception repeater 5 and the wireless sensor 6 are examples of a repeater node and a transmission terminal, respectively. For example, at least one is installed for each floor (1F to 3F) of the building 2. In this example, it is considered that one floor of the building 2 corresponds to one warning area for convenience, but the setting mode of the warning area may be changed as appropriate.

  For example, the receiver 3 is installed on the first floor (1F) of the building 2 and is connected to a wireless reception repeater 5 installed on each floor via a wired or wireless transmission path 4. An example of the wired transmission path 4 is a P-type sensor line. This sensor line has an L line and a C line, and an alarm signal is sent from the radio reception repeater 5 to the receiver 3 by a contact output operation in which an alarm current flows between the L line and the C line. Can be sent. The operating power of the radio reception repeater 5 is also supplied from the receiver 3 via the L line and C line. One or a plurality of such sensor lines are drawn from the receiver 3 (in this case, a P-type receiver), and one wireless reception repeater 5 is connected to each line. In FIG. 1, a plurality of P-type sensor lines are collectively shown as a wired transmission path 4.

  The wireless reception repeater 5 can receive a wireless signal transmitted by one or a plurality of wireless sensors 6. When the transmission radio signal of the wireless sensor 6 does not reach the radio reception repeater 5 with sufficient radio field intensity, the radio wave repeater 7 can be complementarily installed. The radio wave repeater 7 is an example of a radio wave relay node that wirelessly relays and transmits a radio signal received from one or more wireless sensors 6 to the radio reception repeater 5. FIG. 1 illustrates a state in which radio wave repeaters 7 are installed on the second and third floors of the building 2, respectively. A radio signal relayed by one radio wave repeater 7 that has received a radio signal from the wireless sensor 6 is re-relayed by another radio wave repeater 7 corresponding to the same line, and the radio reception repeater 5 A transmission path such as that received by the user can be set, but the description thereof is omitted.

  The radio reception repeater 5 receives the radio signal transmitted from the radio sensor 6 and / or the radio wave repeater 7 installed on the same floor, respectively, thereby determining whether or not a fire has occurred on the floor. Can be notified. In other words, the wireless reception repeater 5 installed on each floor is composed of a wireless sensor 6 installed on the same floor (in the floor where the radio relay 7 is installed, the wireless sensor 6 and the radio wave). An example belonging to the wireless monitoring line by the wireless network together with the repeater 7). This can be considered that one floor of the building 2 corresponds to one caution area, and a radio monitoring line is installed in each caution area.

  The wireless sensor 6 detects the occurrence of a fire by, for example, detecting any one of heat, smoke, flame, and carbon monoxide generated by a fire alone or in combination. Examples of the wireless sensor 6 that detects heat include a constant temperature spot sensor, a differential spot sensor, and the like. Examples of the wireless sensor 6 that detects smoke include a photoelectric spot sensor, an ionization spot sensor, a photoelectric separation sensor, and the like. As an example of the wireless sensor 6 that detects a flame, there are an ultraviolet spot flame detector, an infrared spot flame detector, and the like that detect a specific wavelength (ultraviolet ray or infrared ray) emitted by the flame.

  When the wireless sensor 6 determines that a fire has occurred because the detected value exceeds a predetermined threshold or the like, the wireless sensor 6 wirelessly transmits a signal indicating the occurrence of a fire (hereinafter sometimes referred to as a “reporting event signal”). Note that the occurrence of a fire is an example of an event that should be alerted in a warning area. Therefore, for example, the wireless sensor 6 may be applied to a device capable of detecting other events indicating occurrence of gas leak, theft, house intrusion and the like without being limited to a fire. For example, an alarm system that combines a security receiver and an intrusion detector, a gas leak receiver and a gas leak detector, or the like may be constructed.

  When the radio wave repeater 7 receives the notification event signal from the wireless sensor 6, it transmits the received notification event signal to the wireless reception repeater 5 by radio, that is, relays it. By providing the radio wave repeater 7, it is possible to prevent a radio signal such as an alarm event signal transmitted from the wireless sensor 6 from being lost because it does not reach the radio reception repeater 5 with sufficient radio wave intensity. (Complementation of dead zone).

  For example, when the wireless reception repeater 5 receives a notification event signal transmitted wirelessly from the wireless sensor 6 and / or the radio relay 7, the notification signal is sent to the receiver 3 via the wired transmission path 4. Send.

  When the receiver 3 receives the alert signal from any one of the radio reception repeaters 5, the receiver 3 performs an alarm process. As an example of alarm processing, the lighting of the district window corresponding to the fire light equipped with the receiver 3 or the alert area where the fire occurred, the sound of the main sound (buzzer or bell), the alert area where the fire occurred The sound of the district's sound (bell), activation of emergency broadcast equipment, fire and smoke control equipment, fire extinguishing equipment, etc. can be mentioned.

  In addition, the wireless sensor 6 and the radio wave repeater 7 periodically send a signal (hereinafter referred to as a “survival confirmation signal”) for notifying that each is operating properly to the wireless reception repeater 5. Can be sent to. The wireless reception repeater 5 confirms whether or not the survival confirmation signal can be periodically received, thereby confirming that the wireless sensor 6 and the radio wave repeater 7 are operating properly, and that the It can be confirmed that there is no battery exhaustion or communication failure.

  The radio reception repeater 5 may include a survival confirmation timer (for example, a timer function by a program) for the radio sensor 6 and / or the radio wave repeater 7 belonging to the radio monitoring line in charge of monitoring. The survival confirmation timer is restarted when a survival confirmation signal is received. If the survival confirmation signal is not received even if the survival confirmation timer is timed out without being restarted, the radio reception repeater 5 notifies the receiver 3 that an abnormality has occurred.

  The radio reception repeater 5, the wireless sensor 6, and the radio wave repeater 7, for example, register (for example, store in a memory or the like) an identifier (ID) of a device that can be a communication partner. The specification or setting can communicate with a device that matches the registered ID.

(Communication mode in the wireless section in the system 1)
In each warning area of the building 2 (in other words, an individual wireless monitoring line), between the wireless sensor 6 and the wireless reception repeater 5, and between the wireless sensor 6 and the radio wave relay 7 Can be connected by a one-way wireless link that is a direction (upward direction) from the wireless sensor 6 to the wireless reception repeater 5 (or radio wave repeater 7).

  In other words, the wireless sensor 6 may perform wireless transmission through the wireless reception repeater 5 and / or the radio wave repeater 7 and the uplink wireless link. Therefore, since the wireless sensor 6 does not need to have a wireless reception system, the configuration of the wireless sensor 6 having a larger number of installations in the system 1 than the radio wave relay 7 and the wireless reception relay 5 is provided. It can be simplified. As a result, the cost and power consumption of the entire system 1 can be suppressed. In addition, the driving time (battery life) of the wireless sensor 6 can be extended, or the battery capacity required for the wireless sensor 6 can be suppressed to reduce the size and cost of the wireless sensor 6.

  On the other hand, the radio reception repeater 5 and the radio wave repeater 7 can be connected by a bi-directional radio link, and bi-directional communication can be performed wirelessly. Thereby, it becomes possible to transmit / receive specific information between the radio reception repeater 5 and the radio wave repeater 7 in addition to the event signal described above.

  Examples of specific information include control information such as commands (for example, wireless link connection confirmation, alarm processing (alarm display, notification sound output) start / stop, etc.), and device (node) setting information (for example, Communication mode (unidirectional / bidirectional), sensor sensitivity, display format, etc., information on the operating state of the device (eg, power supply / battery voltage, etc.), information on the communication status with the communication partner (eg, reception history of event signals) And transmission / relay history, wireless link communication quality (for example, received radio wave intensity), and the like.

  In other words, the radio reception repeater 5 and the radio wave repeater 7 can control each other's operation and transmit / receive desired information through a bidirectional radio link.

  For example, the wireless reception repeater 5 can receive desired information from the radio wave repeater 7 by transmitting various commands to the radio wave repeater 7. Similarly, the radio wave repeater 7 can receive desired information from the radio reception repeater 5 by transmitting various commands to the radio reception repeater 5.

  Therefore, the performance of the system 1 and the convenience of the system user (hereinafter simply referred to as “user”) can be improved. For example, in the wireless reception repeater 5, information regarding the setting information and operation state of the radio wave repeater 7, information on the wireless sensor 6 that the radio wave relay 7 is responsible for relaying, and reception from the wireless sensor 6. It is possible to receive and confirm any of the information on the radio field intensity, the information on the relay history of the event signal received from the wireless sensor 6, the information on the battery voltage of the wireless sensor 6, and the like. Equivalent confirmation can also be performed by the radio wave repeater 7. Accordingly, it is possible to check the state of the wireless monitoring line that the wireless reception repeater 5 is in charge of monitoring in the radio wave repeater 7.

  In addition, the wireless reception repeater 5 receives the event signal relay (transmission) history information from the radio wave repeater 7 to confirm the consistency with the event signal reception history in the wireless reception repeater 5. can do. Therefore, it is possible to confirm whether or not there is a false alarm due to wireless communication. For example, if an event signal reception history is recorded in the radio reception repeater 5 even though an event signal transmission history is not recorded in the radio wave repeater 7, a false alarm caused by radio communication occurs. The possibility of The confirmation can also be performed in the radio wave repeater 7 by receiving the reception history of the event signal in the radio reception repeater 5 from the radio reception repeater 5.

  Further, when the setting information of the radio wave repeater 7 is updated or the radio wave repeater 7 is replaced, the setting information of the radio wave repeater 7 can be received (downloaded) from the radio reception repeater 5. . Therefore, the setting work efficiency of the radio wave repeater 7 can be improved, setting errors can be reduced, and labor can be saved.

  In addition, one or both of the radio reception repeater 5 and the radio wave repeater 7 can confirm the status of the wireless connection between them. Therefore, for example, when the radio wave repeater 7 is newly installed, the radio wave repeater 7 is appropriately installed while confirming whether the radio connection with the radio reception repeater 5 is possible. Can be easily installed on site. As a result, the installation work of the radio wave repeater 7 can be made more efficient and labor-saving.

  Further, since the radio reception repeater 5 can be controlled from the radio wave repeater 7, for example, the alarm (alarm display or notification sound output) by the radio reception repeater 5 can be stopped from the radio wave repeater 7. Is possible. Alternatively, the alarm processing by the receiver 3 can be stopped from the radio wave repeater 7 via the wireless reception repeater 5. Of course, when the radio wave repeater 7 is provided with an alarm output function, the alarm output operation by the radio wave repeater 7 can also be stopped from the receiver 3 or the radio reception repeater 5 side.

  The advantages brought about by bidirectionalizing the wireless communication section between the wireless reception repeater 5 and the radio relay 7 as described above more than compensate for the disadvantages such as the device size, cost, and power consumption increase.

  It should be noted that radio communication from the wireless sensor 6 to the wireless reception repeater 5 is sufficient, and wireless communication with the wireless reception repeater 5 is possible over a wireless monitoring line that originally does not require radio wave relay. The radio wave repeater 7 may be installed intentionally. By deliberately installing the radio wave repeater 7, the same advantages as described above can be obtained.

  Note that the bidirectional radio link between the radio reception repeater 5 and the radio wave repeater 7 may be selectively switched between a one-way (for example, uplink) radio link. The switching of the wireless link between the two-way and one-way (in other words, switching of the communication mode) is performed by, for example, operating the wireless reception repeater 5 and / or the radio relay 7 or a command through the wireless link. This can be implemented by transmitting control information.

  When the communication mode is switched from bidirectional to unidirectional, for example, one of the transmission processing system and the reception processing system of the devices involved in the switching may be stopped, so that power consumption can be suppressed. Therefore, when it is desired to reduce power consumption, a one-way communication mode (low power consumption mode) can be selected.

Examples of the mode for switching the communication mode include the following modes.
(1) Switching from bidirectional to unidirectional (radio wave repeater 7 to wireless reception repeater 5) In a state where wireless bidirectional communication is possible, for example, the wireless reception repeater 5 is subjected to a user operation. Then, the mode is switched to the one-way mode, and a switching command is transmitted from the radio reception repeater 5 that has received the operation to the radio wave repeater 7 within the assigned range. Upon receiving the command, the radio wave repeater 7 switches to the one-way mode. The same applies when mode switching is performed from the radio wave repeater 7. Of course, the communication mode may be individually switched by operating both the radio reception repeater 5 and the radio wave repeater 7, but the transmission of the switching command as described above is advantageous in terms of equipment cost and usability. preferable.

(2) One-way (radio wave repeater 7 → radio reception repeater 5) → bidirectional switching In a state in which one-way radio communication from the radio wave repeater 7 to the radio reception repeater 5 is possible, for example, radio waves The repeater 7 is switched to the bidirectional mode in response to the user's operation, and a switching command is transmitted from the radio wave repeater 7 that has received the operation to the wireless reception repeater 5. Upon receiving the command, the radio reception repeater 5 is switched to the bidirectional mode. Note that the communication mode may be individually switched by operating both the radio wave repeater 7 and the wireless reception repeater 5. Further, only one of the radio wave repeater 7 and the radio reception repeater 5 may be always operated in the bidirectional mode, thereby enabling mode switching similar to the above (1).

  In the communication mode switching mode described above, the transmission of the switching command may be performed according to the switching operation by the user, or may be performed upon arrival of a predetermined timing after the operation.

  When wireless monitoring lines are installed separately on each floor (floor) of the building 2, it is not easy from the viewpoint of communication environment to perform wireless communication directly between different wireless monitoring lines (for example, between radio wave repeaters 7). . However, between the receiver 3 and any one of the radio reception repeaters 5 and between the radio reception repeaters 5, there are cases where radio signals can be received with sufficient radio wave strength (capture mutual communication is possible). . For example, the receiver 3 and each wireless reception repeater 5 are installed in a vertical and vertical manner so that they can be seen to some extent along the stairs of the building 2 and the vicinity of the atrium. In such a case, the connection by the transmission line 4 is, for example, a connection by a bidirectional wireless link, or the wireless reception repeater 5 connected to each line of the transmission line 4 is bidirectionally wireless. By using a link connection, communication between different wireless monitoring lines can be performed through the wireless reception repeater 5.

  For example, the radio repeater 7 belonging to a certain radio monitoring line passes through another radio monitoring line (FIG. 1) through the radio receiving repeater 5 belonging to the radio monitoring line (installed on the same floor in the example of FIG. 1). It is possible to carry out control communication and information communication with the radio reception repeater 5 and the radio wave repeater 7 belonging to different floors in the example of FIG. Communication between wireless monitoring lines can be identified and controlled based on the ID of the wireless reception repeater 5, for example.

  Therefore, as described above, the advantage brought about by bidirectionalizing the wireless communication between the radio reception repeater 5 and the radio wave repeater 7 belonging to one radio monitoring line can be obtained even between different radio monitoring lines. Can do. Therefore, the performance of the system 1 and the convenience for the user can be further improved. That is, information on the radio reception repeater 5, the radio repeater 7, and the transmission terminal 6 on a different floor is collected from the radio repeater 7 on a certain floor via the radio reception repeater 5 on the floor, It is possible to perform control. The same information collection and control can be performed from the radio reception repeater 5 on a certain floor.

  For example, the user controls the operation of the radio reception repeater 5 and the radio repeater 7 installed on different floors in the radio reception repeater 5 and the radio relay 7 installed on any floor of the building 2. It is possible to check the settings, operation states, operation histories, etc. of the radio reception repeater 5, radio wave repeater 7, and wireless sensor 6 installed on different floors. In other words, the user can appropriately check and control the state of the wireless monitoring line on the other floor as well as the wireless monitoring line on the other floor, regardless of the floor of the building 2. User convenience can be improved.

  The transmission path 4 may not be a wireless link. The wired transmission line 4 capable of intelligent bidirectional communication can realize bidirectional communication between different wireless monitoring lines as described above. In this case, the reliability of communication through the transmission path 4 can be improved as compared with the wireless link. In such a case, the mutual communication between the radio reception repeaters 5 installed on different floors (lines) may be performed via the receiver 3.

(Configuration example of wireless reception repeater 5, wireless sensor 6, and radio wave repeater 7)
Next, FIG. 2 shows a configuration example of the wireless reception repeater 5, the wireless sensor 6, and the radio wave repeater 7 of the present embodiment.

(Wireless sensor 6)
The wireless sensor 6 includes, for example, a sensor unit 11, a CPU 12, a wireless transmission unit 13, an antenna 14, and a battery 15.

  As described above, the sensor unit 11 detects, for example, any one of heat, smoke, flame, and carbon monoxide generated by a fire alone or in combination. The detection value of the sensor unit 11 is given to the CPU 12.

  The CPU 12 is a part that comprehensively controls the operation of the wireless sensor 6, and includes, for example, a sensor processing unit 16 as a function realized by executing a program stored in a memory (not shown).

  When the sensor processing unit 16 receives the detection value from the sensor unit 11, for example, the sensor processing unit 16 compares the detection value of the sensor unit 11 with a predetermined threshold value to determine whether or not a fire has occurred. For example, when the detected value exceeds a threshold value, it is determined that a fire has occurred. If it is determined that a fire has occurred, the sensor processing unit 16 generates a notification event signal indicating the occurrence of a fire, and wirelessly transmits the notification event signal from the antenna 14 through the wireless transmission unit 13.

  The sensor processing unit 16 monitors the capacity (power supply voltage) of the battery 15 via a power supply monitoring circuit (not shown), and generates an event signal indicating that the battery capacity has decreased when the capacity has decreased more than a predetermined value, 13 through the antenna 14 for wireless transmission.

  The sensor processing unit 16 includes a survival confirmation timer (not shown) that repeatedly counts a predetermined time. Each time the survival confirmation timer counts a predetermined time (that is, periodically), the sensor processing unit 16 generates a survival confirmation signal and wirelessly transmits the survival confirmation signal from the wireless transmission unit 13 through the antenna 14. it can.

  The sensor processing unit 16 generates, for example, information on the setting, state, and specifications of the wireless sensor 6 (for example, information on sensor sensitivity, information on battery capacity, information on detection values, etc.) A signal including “sensor information” (hereinafter also referred to as “sensor information signal”) may be wirelessly transmitted from the wireless transmission unit 13 through the antenna 14. The sensor information may be transmitted in synchronization with the transmission period of the survival confirmation signal or may be transmitted asynchronously.

  For example, when the wireless transmission unit 13 receives the various signals from the CPU 12, the wireless transmission unit 13 wirelessly transmits the received signal to the wireless reception repeater 5 and / or the radio wave relay 7 belonging to the same wireless monitoring line from the antenna 14. .

  Wireless transmission by the wireless transmission unit 13 follows, for example, the standard of a specific low power wireless station in the 400 MHz band. The wireless sensor 6 only needs to be able to transmit at least the notification event signal and the survival confirmation signal by one-way communication in the upward direction, so that a wireless reception system is unnecessary.

  The battery 15 supplies, for example, DC power to the sensor unit 11, the CPU 12, and the wireless transmission unit 13.

(Radio wave repeater 7)
Next, the radio wave repeater 7 illustrated in FIG. 2 includes, for example, an operation unit 21, a CPU 22, a memory 23, a display unit 24, a wireless communication unit 25, an antenna 26, and a battery 27.

  For example, the operation unit 21 receives an operation by a user and generates a signal corresponding to the operation. As an example of an operation by the user, an operation for confirming a wireless link connection with the wireless reception repeater 5 corresponding to the wireless monitoring line to which the radio wave repeater 7 belongs, or specific information from the wireless reception repeater 5 Operation for receiving (acquiring), operation for controlling the wireless reception repeater 5, switching operation of the communication mode (bidirectional-one-way) with the wireless reception repeater 5, etc. . Signals corresponding to these operations are given to the CPU 22.

  The CPU 22 is a part that comprehensively controls the operation of the radio wave repeater 7. For example, as a function realized by executing a program (not shown) stored in the memory 23, the relay processing unit 28, connection confirmation A processing unit 29 and an information communication processing unit 30 are provided.

  When the relay processing unit 28 receives, for example, a wireless signal transmitted from the wireless sensor 6 through the wireless communication unit 25 (reporting event signal, event signal indicating battery capacity reduction, survival confirmation signal, sensor information signal, etc.). The received signal is wirelessly transmitted (relayed) from the antenna 26 to the wireless reception repeater 5 through the wireless communication unit 25.

  The relay processing unit 28 periodically generates a survival confirmation signal for notifying that the radio wave repeater 7 is operating properly, and wirelessly receives the generated survival confirmation signal from the wireless communication unit 25 through the antenna 26. To the repeater 5 for transmission. As a result, the radio reception repeater 5 can periodically check normality / abnormality of the radio link connection state of the radio wave repeater 7. In order to periodically generate and transmit a survival confirmation signal, the relay processing unit 28 includes a survival confirmation timer that repeatedly counts a predetermined time.

  Further, the relay processing unit 28 receives and / or transmits (relays) a signal received from the wireless sensor 6 (alarm event signal, event signal indicating battery capacity reduction, survival confirmation signal, sensor information signal). Information such as history and sensor information included in the sensor information signal may be recorded in the memory 23. The information in the memory 23 thus recorded can be appropriately displayed on the display unit 25 as necessary. For example, the current status may be always displayed according to the type of information. Further, it may be displayed at an arbitrary timing by a predetermined operation of the operation unit 41. The display can be performed by known display means and methods such as lighting or blinking of an LED, or text display such as a liquid crystal display.

  For example, when the connection confirmation processing unit 29 receives a signal corresponding to the connection confirmation operation received by the operation unit 21, the connection confirmation processing unit 29 generates a connection confirmation request (command) and wirelessly transmits the connection request through the wireless communication unit 25 and the antenna 26. It transmits to the reception repeater 5. The generation and transmission of the connection confirmation request may be performed periodically regardless of whether or not the user has performed a connection confirmation operation on the operation unit 21. For example, when the connection confirmation processing unit 29 receives the connection confirmation response signal from the wireless reception repeater 5 through the wireless communication unit 25 within a predetermined time from the transmission of the connection confirmation request, the connection confirmation processing unit 29 communicates with the wireless reception repeater 5. It is determined that wireless communication is possible (connection confirmation result is good). The determination result may be displayed on the display unit 24, for example.

  For example, when the connection confirmation processing unit 29 receives a connection confirmation request from the wireless reception repeater 5 through the wireless communication unit 25, the connection confirmation processing unit 29 generates a connection confirmation response signal and sends the response signal to the connection confirmation request from the wireless communication unit 25. Is transmitted to the wireless reception repeater 5 which is the transmission source. Note that the connection confirmation processing unit 29 periodically generates a signal corresponding to the connection confirmation response regardless of whether or not the connection confirmation request is received, and transmits the generated signal from the wireless communication unit 25 to the wireless reception repeater 5. You may make it transmit to address. Thereby, even when the wireless reception repeater 5 does not transmit a connection confirmation request to the radio repeater 7, it is possible to periodically confirm whether communication with the radio repeater 7 is possible.

  For example, when the information communication processing unit 30 receives a signal corresponding to the information acquisition request operation received by the operation unit 21, the information communication processing unit 30 generates an information acquisition request (command) and sends the information acquisition request to the wireless communication unit 25 and the antenna 26. To the wireless reception repeater 5. Note that the generation and transmission of the information acquisition request may be performed periodically regardless of whether or not an information acquisition operation is performed on the operation unit 21. Further, for example, when the information communication processing unit 30 receives the information acquisition response signal from the wireless reception repeater 5 through the wireless communication unit 25, the information communication processing unit 30 includes all of the information included in the response signal (information requested by the information acquisition request) or A part is stored in the memory 23, for example. The information communication processing unit 30 can display part or all of the information on the display unit 24, for example.

  As in the case of the wireless sensor 6, the CPU 28 determines whether the capacity of the battery 27 has decreased based on a signal from a monitoring circuit (not shown). And an event signal indicating a decrease in battery capacity is generated and transmitted from the antenna 26 to the wireless reception repeater 5 through the information communication unit 34 of the wireless transmission unit 32. When another power source is used instead of the battery 27, the state of the power source (for example, a power failure of the AC power source or a decrease in capacity of the standby power source) is monitored, and similar processing is performed when there is an abnormality.

  Further, for example, when the information communication processing unit 30 receives an information acquisition request from the wireless reception repeater 5 through the wireless communication unit 25, the information communication processing unit 30 generates an information acquisition response signal including information corresponding to the information acquisition request. The generated information acquisition response is transmitted from the wireless communication unit 45 to the wireless reception repeater 5 that is the transmission source of the information acquisition request.

  For example, the information communication processing unit 30 can have a function as the communication mode switching control unit 301. The communication mode switching control unit 301 receives a signal corresponding to the communication mode switching operation accepted by the operation unit 21, the arrival of a predetermined timing after the operation, or the communication mode switching request (command) from the radio reception repeater 5. The communication mode of the wireless communication unit 25 can be switched according to reception. For example, if switching from bidirectional to unidirectional, the reception processing system from the wireless reception repeater 5 is stopped in the wireless communication unit 25, and if the switching is reversed, the reception processing system is started.

  The communication mode switching control unit 301 generates a communication mode switching request (command) when a signal corresponding to the communication mode switching operation received by the operation unit 21 is received and when a predetermined timing comes after the operation. Then, the request can be wirelessly transmitted to the wireless reception repeater 5 through the wireless communication unit 25.

  In addition to the display unit 24, the radio wave repeater 7 may include a notification unit (not shown) including an acoustic output unit and the like. By providing the notification unit, the radio wave repeater 7 can display desired information and the like on the display unit, and can output, for example, voice by the acoustic output unit. Alternatively, a notification unit including an acoustic output unit may be provided instead of the display unit 24.

  Specific processing by the relay processing unit 28, the connection confirmation processing unit 29, and the information communication processing unit 30 will be described later with reference to FIGS.

  An information management table 31 can be stored in the memory 23. The information management table 31 includes IDs, setting information, operation state information, and / or communication state information of the wireless reception repeater 5, wireless sensor 6, and radio wave repeater 7 that directly or indirectly communicate with each other. Can be stored. A specific example of the information management table 31 will be described later with reference to FIG.

  The display unit 24 displays, for example, a result (good / bad) of the connection confirmation process or a part or all of the information stored in the memory 23 (for example, the information management table 31) under the control of the CPU 22.

  The wireless communication unit 25 receives the wireless signal transmitted from the wireless sensor 6 through the one-way communication of the wireless sensor 6 in the upward direction, and performs bidirectional communication with the wireless reception repeater 5. Since wireless communication with the wireless sensor 6 may be unidirectional (upward) communication, a wireless transmission system that transmits a wireless signal to the wireless sensor 6 to the wireless communication unit 25 (a transmission / reception system as hardware) In the case of common use, transmission processing for the wireless sensor 6 is not necessary.

  For the one-way communication with the wireless sensor 6 and the two-way communication with the wireless reception repeater 5, the specific low power in the 400 MHz band is used in the same manner as the wireless sensor 6 (wireless transmitter 13). Apply wireless communication according to wireless station standards. The wireless communication unit 25 has a function of measuring the strength of a wireless signal (received radio wave strength) received in one-way communication with the wireless sensor 6 and bidirectional communication with the wireless reception repeater 5. You can do it. Information of the measured received radio wave intensity can be included in the information acquisition response signal described above.

  The wireless communication unit 25 can include a functional unit (communication interface or the like) corresponding to the type of wireless signal to be transmitted / received. For example, the wireless communication unit 25 may include a wireless relay unit 32, a connection confirmation unit 33, and an information communication unit 34.

  The wireless relay unit 32 receives, for example, signals (such as a notification event signal, an event signal indicating a decrease in battery capacity, a survival confirmation signal, a sensor information signal) wirelessly transmitted from the wireless sensor 6 via the antenna 26. Then, this content is once transferred to the CPU 22. The CPU 22 generates a radio signal for relay transmission including information included in the received signal and sends it to the radio relay unit 32, and wirelessly transmits from the antenna 26 to the radio reception repeater 5 belonging to the same radio monitoring line. Send.

  Upon receiving the connection confirmation request (command) generated by the CPU 22, the connection confirmation unit 33 wirelessly transmits the request from the antenna 26 to the wireless reception repeater 5. When the connection confirmation response signal corresponding to the connection confirmation request is received through the antenna 26, the connection confirmation unit 33 gives the received connection confirmation response to the CPU 22 (connection confirmation processing unit 29).

  Further, when the connection confirmation unit 33 receives a connection confirmation request from the radio reception repeater 5 via the antenna 26, the connection confirmation unit 33 gives the request to the CPU 22 (connection confirmation processing unit 29). When a connection confirmation response to the request is received from the CPU 22 (connection confirmation processing unit 29), the connection confirmation unit 33 sends the connection confirmation response signal from the antenna 26 to the wireless reception repeater 5 that is the transmission source of the connection confirmation request. Wireless transmission to the address.

  Upon receiving the information acquisition request and the communication mode switching request generated by the CPU 22 (information communication processing unit 30), the information communication unit 34 wirelessly transmits the request from the antenna 26 to the wireless reception repeater 5. When a response (information acquisition response) signal to the information acquisition request is received through the antenna 26, the information communication unit 34 gives the received information acquisition response to the CPU 22 (information communication processing unit 30).

  In addition, when the information communication unit 34 receives the information acquisition request and the communication mode switching request from the wireless reception repeater 5, the information communication unit 34 gives the request to the CPU 22 (information communication processing unit 30). When the information acquisition response to the received information acquisition request is received from the CPU 22 (information communication processing unit 30), the information communication unit 34 receives the information acquisition response signal from the antenna 26 for wireless reception that is the transmission source of the information acquisition request. Wireless transmission to the repeater 5 is performed.

  For example, the battery 27 supplies DC power to the operation unit 21, CPU 22, memory 23, display unit 24, and wireless communication unit 25. Note that the power supply may alternatively be performed by converting a commercial AC 100-volt AC power source into a DC power source. When a commercial AC power source is provided, the battery 27 may be used as a standby power source.

(Wireless repeater 5)
The wireless reception repeater 5 includes, for example, an operation unit 41, a CPU 42, a memory 43, a display unit 44, a wireless communication unit 45, a transmission line communication unit 46, and an antenna 47. The radio reception repeater 5 operates with a power source supplied from the receiver 3 via a sensor line (L line, C line), for example. The transmission line communication unit 46 includes a power supply circuit (not shown) for making the power supply nonpolar, smoothing, current limiting, and the like.

  For example, the operation unit 41 receives an operation by a user and generates a signal corresponding to the operation. As an example of an operation by a user, an operation for wirelessly confirming connection with the radio wave repeater 7 belonging to the same radio monitoring line, or a radio reception repeater belonging to the radio wave repeater 7 and / or a different radio monitoring line Operation for receiving (acquiring) specific information from 5, operation for controlling the radio wave repeater 7 and / or radio reception repeater 5 belonging to a different radio monitoring line, An operation for switching the communication mode (bidirectional to unidirectional) is exemplified. Signals corresponding to these operations are given to the CPU.

  The CPU 42 is a part that comprehensively controls the operation of the radio wave repeater 7. For example, as a function realized by executing a program (not shown) stored in the memory 43, a reception processing unit 49, a connection confirmation process Unit 50 and information communication processing unit 51.

  For example, the reception processing unit 49 receives a signal wirelessly transmitted by the wireless sensor 6 or the radio relay unit 7 or the wireless reception relay unit 5 belonging to a different wireless monitoring line through the antenna 47 and the wireless communication unit 45. The processing according to the received signal is performed. An example of the process is a process of transmitting a notification signal to the receiver 3 by receiving a notification event signal, and normality / abnormality of the wireless sensor 6 or radio wave repeater 7 depending on whether or not a survival confirmation signal is received. A confirmation process, an information reception process by receiving a sensor information signal, and various corresponding processes by receiving a request (command).

  For example, a transmission process of a notification signal to the receiver 3 and a process of notifying the receiver 3 of the occurrence of an abnormality when the survival confirmation signal cannot be received from the wireless sensor 6 or the radio wave repeater 7 within a predetermined time are, for example, transmission This is implemented through the road communication unit 46. Note that a failure signal accompanying the reception of an event signal indicating a decrease in battery capacity from the wireless sensor 6 or the radio wave repeater 7 can also be transmitted to the receiver 3 through the transmission line communication unit 46.

  With the above processing, the reception processing unit 49 receives the notification event signal and / or survival confirmation signal, the transmission history of the notification signal and / or abnormality occurrence notification to the receiver 3, and sensor information. Sensor information and the like included in the signal can be recorded in the memory 43. The information in the memory thus recorded can be appropriately displayed on the display unit 44 as necessary. For example, the current status may be always displayed according to the type of information. Further, it may be displayed at an arbitrary timing by a predetermined operation of the operation unit 41. The display can be performed by known display means and methods such as lighting or blinking of an LED, or text display such as a liquid crystal display.

  For example, when the connection confirmation processing unit 50 receives a signal corresponding to the connection confirmation operation received by the operation unit 41, the connection confirmation processing unit 50 generates a connection confirmation request (command) and sends the generated connection confirmation request from the wireless communication unit 45 to the antenna 47. To the radio wave repeater 7 or other radio reception repeater 5. The generation and transmission of the connection confirmation request may be performed periodically regardless of whether or not the user has performed a connection confirmation operation on the operation unit 41.

  When the connection confirmation response signal corresponding to the connection confirmation request is received from the radio wave repeater 7 or another radio reception repeater 5 through the antenna 47 and the wireless communication unit 45, the connection confirmation processing unit 50 It is determined that communication with another wireless reception repeater 5 is possible (connection confirmation processing result is good). The determination result may be displayed on the display unit 44, for example.

  For example, when the connection confirmation processing unit 50 receives a connection confirmation request from the radio wave repeater 7 or another wireless reception repeater 5 through the antenna 47 and the wireless communication unit 45, the connection confirmation processing unit 50 sends a connection confirmation response signal to the connection confirmation request. The generated connection confirmation response signal is transmitted from the wireless communication unit 45 to the radio wave repeater 7 or other wireless reception repeater 5 that is the transmission source of the connection confirmation request through the antenna 47.

  The connection confirmation processing unit 50 periodically generates a signal corresponding to the connection confirmation response regardless of whether the connection confirmation request is received, and transmits the generated signal from the wireless communication unit 45 to the radio wave repeater 7 or other It may be transmitted to the radio reception repeater 5. As a result, the radio wave repeater 7 or other radio reception repeater 5 can periodically communicate with the radio reception repeater 5 even when the connection confirmation request is not transmitted to the radio reception repeater 5. Can be confirmed.

  For example, when the information communication processing unit 51 receives a signal corresponding to the information acquisition operation received by the operation unit 41, the information communication processing unit 51 generates an information acquisition request (command) and relays the request from the wireless communication unit 45 through the antenna 47. To the receiver 7 or other wireless reception repeater 5. Note that the generation and transmission of the information acquisition request may be performed periodically regardless of whether there is an information acquisition operation on the operation unit 41.

  When an information acquisition response signal corresponding to the information acquisition request is received from the radio wave repeater 7 or another wireless reception repeater 5 through the wireless communication unit 45, the information communication processing unit 51 includes information included in the received information acquisition response. Are stored in the memory 43, for example. Part or all of the information stored in the memory 43 can be displayed on the display unit 44, for example.

  Further, when the information communication processing unit 51 receives an information acquisition request from the radio wave repeater 7 or other wireless reception repeater 5 through the wireless communication unit 45, for example, an information acquisition response including information according to the information acquisition request. A signal is generated, and the generated information acquisition response signal is transmitted from the wireless communication unit 45 to the radio wave repeater 7 or other wireless reception repeater 5 that is the transmission source of the information acquisition request through the antenna 47.

  In addition to the display unit 44, the wireless reception repeater 5 may include a notification unit (not shown) including an acoustic output unit and the like. By providing the notification unit, the radio reception repeater 5 can display desired information and the like on the display unit 44 and can also output sound by the acoustic output unit. Alternatively, such a notification unit may be provided instead of the display unit 44.

  For example, the information communication processing unit 51 can include a communication mode switching control unit 511. The communication mode switching control unit 511 receives a signal corresponding to the communication mode switching operation received by the operation unit 41, the arrival of a predetermined timing after the operation, or the radio wave repeater 7 and / or other radio reception repeater 5 The communication mode of the wireless communication unit 45 and / or the transmission path communication unit 46 can be switched in response to reception of the transmitted communication mode switching request (command).

  By switching the communication mode of the wireless communication unit 45, the bidirectional / one-way of the wireless link between the wireless reception repeater 5 and the radio wave repeater 7 is switched. On the other hand, by switching the communication mode of the transmission path communication unit 46, the bidirectional / one-way direction of the transmission path 4 is switched.

  For example, if the wireless link between the wireless reception repeater 5 and the radio relay 7 is switched from bidirectional to unidirectional, the transmission processing system to the radio relay 7 is stopped in the wireless communication unit 45. If the switching is reversed, the transmission processing system is activated. If the transmission path 4 is switched from bidirectional to unidirectional, the transmission path communication unit 46 stops the reception processing system from the receiver 3 side, and if the switching is reversed, activates the reception processing system. To do.

  The communication mode switching control unit 511 generates a communication mode switching request (command) when a signal corresponding to the communication mode switching operation received by the operation unit 41 is received and when a predetermined timing comes after the operation. Then, the generated communication mode switching request can be transmitted to the radio wave repeater 7 through the radio communication unit 45 or to another radio reception repeater 5 through the transmission line communication unit 46.

  Specific processing by the reception processing unit 49, the connection confirmation processing unit 50, and the information communication processing unit 51 will be described later with reference to FIGS.

  An information management table 52 can be stored in the memory 43. The information management table 52 includes IDs, setting information, operation state information, and / or communication state information of the wireless reception repeater 5, wireless sensor 6, and radio wave repeater 7 that directly or indirectly become communication partners. Can be stored. A specific example of the information management table 52 will be described later with reference to FIG.

  The display unit 44 displays, for example, part or all of the information stored in the memory 43 (for example, the information management table 52) under the control of the CPU 42, for example, as a result of connection confirmation processing (good / bad).

  The wireless communication unit 45 receives a wireless signal transmitted from the wireless sensor 6 by the one-way communication from the wireless sensor 6 through the antenna 47, while bidirectionally communicating with the radio wave repeater 7. I do. Since wireless communication with the wireless sensor 6 is one-way (upward) communication, a wireless transmission system that transmits a wireless signal to the wireless sensor 6 to the wireless communication unit 45 (when the transmission / reception system is common as hardware) The transmission processing for the wireless sensor 6 is not necessary. For the one-way communication with the wireless sensor 6 and the two-way communication with the radio wave repeater 7, a specific low-power radio station in the 400 MHz band, like the wireless sensor 6 (wireless transmitter 13). Apply wireless communication in accordance with the standard.

  The wireless communication unit 45 can include a functional unit corresponding to the type of wireless signal to be transmitted / received. For example, the wireless communication unit 45 can include a wireless reception unit 53, a connection confirmation unit 54, and an information communication unit 55.

  The wireless reception unit 53 is, for example, a signal wirelessly transmitted from the wireless sensor 6 and / or the radio wave repeater 7 (reporting event signal, event signal indicating battery capacity reduction, survival confirmation signal, sensor information signal, etc.) Is received through the antenna 47, the signal is given to the CPU 42 (reception processing unit 49).

  When the connection confirmation unit 54 receives the connection confirmation request generated by the CPU 42 (connection confirmation processing unit 50), the connection confirmation unit 54 wirelessly transmits the request from the antenna 47 to the radio wave repeater 7. When the connection confirmation response signal for the connection confirmation request is received through the antenna 47, the connection confirmation unit 54 gives the received connection confirmation response signal to the CPU 42 (connection confirmation processing unit 50).

  In addition, when the connection confirmation unit 54 receives a connection confirmation request from the radio wave repeater 7 through the antenna 47, the connection confirmation unit 54 gives the received command to the CPU 42 (connection confirmation processing unit 50). When a connection confirmation response to the connection confirmation request is received from the CPU 42 (connection confirmation processing unit 50), the connection confirmation unit 54 transmits the received connection confirmation response signal from the antenna 47 to the radio wave repeater that is the transmission source of the connection confirmation request. 7 is transmitted wirelessly.

  When the information communication unit 55 receives the information acquisition request and the communication mode switching request from the CPU 42 (information communication processing unit 51), the information communication unit 55 wirelessly transmits the request from the antenna 47 to the radio wave repeater 7 or other wireless reception repeater 5. To do. When the information acquisition response signal corresponding to the information acquisition request is received through the antenna 47, the information communication unit 55 gives the received information acquisition response signal to the CPU 42 (information communication processing unit 51).

  In addition, when the information acquisition request and the communication mode switching request are received from the radio wave repeater 7 or other wireless reception repeater 5 through the antenna 47, the information communication unit 55 sends the received request to the CPU 42 (information communication processing unit 51). ). When the information acquisition response to the received information acquisition request is received from the CPU 42, the information communication unit 55 receives the information acquisition response signal from the antenna 47 for the radio wave repeater 7 that is the source of the information acquisition request or other wireless reception Wireless transmission to the repeater 5 is performed.

  The transmission path communication unit 46 communicates with the receiver 3 through a wired or wireless communication path. When the transmission line communication unit 46 receives the notification event signal from the CPU 42 (reception processing unit 49), the transmission line communication unit 46 transmits the notification signal to the receiver 3, and as a result of the survival confirmation processing by the CPU 42 (reception processing unit 49). When the abnormality occurrence notification is received, the receiver 3 can be notified of the abnormality occurrence. Further, the transmission line communication unit 46 can also transmit to the receiver 3 a failure signal that accompanies reception of an event signal indicating a decrease in battery capacity from the wireless sensor 6 or the radio wave repeater 7.

  In this system, the transmission path 4 is a wired communication path (primitive P-type line) composed of L and C lines so that the receiver 3 of the existing wired equipment (including primitive P-type equipment) can be used as it is. In this case, a receiving resistor is connected to the L line in the receiving circuit (not shown) of the receiver 3, and the L line and the C line form a loop circuit including the receiving resistor. The loop circuit is provided with a load formed by connecting the radio reception repeater 5 (transmission path communication unit 46) and the terminator in parallel. That is, the combined impedance of the load and the receiving resistor are connected in series. The transmission line communication unit 46 is normally high impedance and short-circuited when an abnormality occurs. For this reason, when an abnormality occurs, the current flowing in the loop (reception resistor) increases, and this is detected by the reception circuit of the receiver 3. On the other hand, since the terminator is opened in a pseudo manner at the time of disconnection, the receiver 3 can detect the disconnection by detecting that the current is reduced as compared with the normal time.

  Note that the transmission of the result of the survival confirmation process (abnormality notification) and the transmission of the fault signal accompanying the event signal indicating the abnormal battery capacity decrease may be the same transmission as at the disconnection. In this case, the receiver 3 displays a notification of a survival confirmation abnormality or a battery capacity drop as a disconnection. Displaying a notification that the battery capacity is low as disconnection can be considered as an alarm for notifying the communication disconnection of the line due to the stop of the operation of the wireless sensor 6 or the radio relay device 7 due to battery exhaustion or the like. However, regardless of the diversion of primitive P-type equipment, when using a more intelligent P-type equipment (address, command, simple data transmission possible) receiver or R-type equipment receiver, there is a separate dedicated When developing a receiver, various notifications to the receiver 3 can be performed individually.

  Further, in this system, since the line becomes wireless from the middle, the terminator is connected between the connection terminals of the L line and the C line of the wireless reception repeater 5. Although the terminator may be built in the radio reception repeater 5, it does not exclude the provision of a plurality of radio reception repeaters 5 on the same line. In this case, a termination connection / non-connection switching function is provided. Only the terminal wireless reception repeater 5 may be set to a connected state.

  Further, the transmission line communication unit 46 supplies DC power to the operation unit 41, the CPU 42, the memory 43, the display unit 44, and the wireless communication unit 45 by a power supply circuit (not shown). When the transmission path is a wireless communication path, the wireless reception repeater 5 is provided with a power source (commercial AC power source or battery or other power source device). When a commercial AC power supply unit is provided, a backup backup power supply (battery) may be provided in preparation for a power failure.

  Next, FIG. 3 is a diagram showing an example of the format of the command 61 used in the present embodiment. The command 61 is generated, for example, by the CPU 22 of the radio wave repeater 7 and / or the CPU 42 of the radio reception repeater 5. The generated command 61 is transmitted and received between the radio reception repeater 5 and the radio wave repeater 7 and / or between the radio reception repeaters 5 as described above.

  The command 61 includes, for example, a serial number field 62, a transmission source ID field 63, a command code field 64, a destination ID field 65, and a check code field 66.

  For example, a serial number indicating the order of the command 61 is set in the serial number field 62, and the serial number is incremented by 1 every time the command 61 is transmitted in the radio wave repeater 7 and the radio reception repeater 5. The serial number can be used to manage commands 61 transmitted and received in the automatic fire alarm system 1. For example, it is used for management of command transmission order, processing for prohibiting re-relay, and the like, but the description is omitted. It should be noted that “event signal” other than the command 61 can be transmitted from the wireless sensor 6 in addition to the radio wave repeater 7 and the wireless reception repeater 5, but serial number processing for the “event signal” is also performed in the command 61. It is the same as the case of. FIG. 3 exemplifies the format of the command 61. In the case of an “event signal”, the command code (field) 64 of the command 61 may be replaced with an event code field.

  In the transmission source ID field 63, for example, an identifier for identifying the transmission source of the command 61 is set. As an identifier, a 32-bit code can be used as a non-limiting example. The radio wave repeater 7 and the radio reception repeater 5 that have received the command 61 can return a response to the transmission source identified by the identifier set in the transmission source ID field 63. For example, in the case of a command transmitted via relay, both the identifier of the transmission source and the identifier of the terminal that performed the relay are added to the transmission source ID field 63.

  In the command code field 64, information for identifying the type of the command 61 (connection confirmation request / response, information acquisition request / response, etc.) is set. As a non-limiting example, 5 to 6 bits of identification information can be set in the command code field 64. The radio reception repeater 5 (CPU 42) and the radio wave repeater 7 (CPU 22) that have received the command 61 can identify the type of the received command 61 by analyzing the identification information set in the command code field 64, Processing according to the identified type (connection confirmation request / response, information acquisition request / response generation, communication mode switching, alarm stop, etc.) can be performed.

  In the command 61 indicating the information acquisition request, a plurality of types are prepared according to the type of information requested to be acquired (for example, “setting information”, “operation status information”, “communication status information”, etc.). Good. Therefore, a plurality of types of the command 61 indicating the information acquisition response may be prepared according to the type of information included in the response (such as “setting information”, “operation status information”, “communication status information”). .

  In the destination ID field 65, for example, an identifier (destination information) for identifying one or a plurality of destinations of the command 61 is set. As an identifier, a 32-bit code can be used as a non-limiting example. The radio wave repeater 7 and the radio reception repeater 5 that have received the command 61 perform processing corresponding to the command type identified from the information in the command code field 64 if the identifier of the destination ID field 65 is set. carry out. On the other hand, if the identifier of the radio wave repeater 7 or another wireless reception repeater 5 is set in the destination ID field 65, the wireless reception repeater 5 that has received the command 61 sends the received command 61 to the corresponding device. Transfer to (wireless transmission). When a command is transmitted to a plurality of destinations, the same command is transmitted for each destination, or the destination ID field 65 is appended with a plurality of destination identifiers. When identifiers corresponding to a plurality of destinations are set in the destination ID field 65, processing corresponding to the command type and transfer of the received command 61 can be performed at each destination.

  In the check code field 66, an appropriate check code such as a checksum or CRC of information set in the serial number field 62, the transmission source ID field 63, the command code field 64, and the destination ID field 65 is set.

  Next, FIG. 4 is a diagram showing an example of the information management table 31 (52) stored in the memory 23 (52) of the radio wave repeater 7 (wireless reception repeater 5). The information management table 31 (52) illustratively includes an ID column, a setting information column, an operation state information column, and a communication state information column.

  In the ID column, for example, information (node ID) for identifying various devices (nodes) such as the wireless sensor 6, the radio relay device 7, and the wireless reception relay device 5 that directly or indirectly become communication partners. , Identifier) is recorded. In addition, you may record self identification information similarly.

  In the setting information column, for example, setting information of the device identified by the node ID is recorded. For example, when the node ID is the node ID of the radio reception repeater 5 or the radio wave repeater 7, the setting information field includes settings for wireless bidirectional / one-way communication and information to the display unit 24 (44). Setting information related to display settings can be set. When the node ID is the node ID of the wireless sensor 6, for example, sensor information such as sensor sensitivity of the wireless sensor 6 is recorded in the setting information column.

  In the operation state information column, for example, information regarding the operation state of the device identified by the node ID is recorded. For example, when the node ID is the node ID of the radio reception repeater 5 or the radio wave repeater 7, information on the output voltage of the battery 27 or the transmission line communication unit 46 (power circuit) is recorded in the operation state information column. it can. When the node ID is the node ID of the wireless sensor 6, information on the output voltage of the battery 15 and the like can be recorded in the operation state information column.

  In the communication status information column, for example, information related to the communication status of the device identified by the node ID is recorded. For example, when the node ID is the node ID of the wireless sensor 6, the communication status information column can record a notification event signal, an event signal indicating a decrease in battery capacity, information on a transmission history of a survival confirmation signal, and the like. Further, when the node ID is the node ID of the radio reception repeater 5 or the radio wave repeater 7, the communication status information column includes a reception event record and / or survival confirmation signal reception history, transmission / relay history, command 61 transmission / reception history, event signal transmission history indicating battery capacity reduction, received radio wave intensity, and the like can be recorded.

(Description of system operation)
Next, the operations of the wireless reception repeater 5, the wireless sensor 6, and the radio wave repeater 7 in the automatic fire alarm system 1 of the present embodiment will be further described with reference to FIGS.

(Notification event processing and survival confirmation processing by the wireless sensor 6)
FIG. 5 is a flowchart showing an example of a notification event process and a survival confirmation process RT1 by the wireless sensor 6 of the present embodiment.

  For example, when the power is turned on, the CPU 12 of the wireless sensor 6 starts a notification event process and a survival confirmation process RT1, and performs an initialization process including a hardware check and a survival confirmation timer restart (step). SP1).

  Next, the CPU 12 of the wireless sensor 6 checks whether or not a predetermined event generation condition is satisfied (step SP2). An example of establishment of the event occurrence condition is when the detection value of the sensor unit 11 exceeds a predetermined threshold or when the capacity (power supply voltage) of the battery 15 is decreased by a predetermined value or more. If the event occurrence condition is satisfied as a result of the check (step SP2: YES), the CPU 12 of the wireless sensor 6 indicates an event signal (for example, a notification event signal or a battery capacity decrease) according to the established condition. Event signal) is generated, and the signal generated from the antenna 14 is wirelessly transmitted to the radio wave repeater 7 through the wireless transmission unit 13 (step SP3). On the other hand, when the event occurrence condition is not satisfied (step SP2: NO), the CPU 12 of the wireless sensor 6 proceeds to the process of step SP4.

  Thereafter, the CPU 12 of the wireless sensor 6 checks whether or not the survival confirmation timer has counted (timed out) a predetermined time (step SP4). As a result of the check, if the survival confirmation timer times out (step SP4: YES), the CPU 12 of the wireless sensor 6 generates a survival confirmation signal and relays the survival confirmation signal from the wireless transmission unit 13 through the antenna 14 for wireless reception. Wirelessly transmitted to the receiver 5 and / or the radio repeater 7 (step SP5). Further, the CPU 12 of the wireless sensor 6 restarts the survival confirmation timer (step SP6). Thereafter, the CPU 12 of the wireless sensor 6 returns to the process of step SP2, and thereafter repeats the processes of steps SP2 to SP6.

  When the survival confirmation timer has not timed out (step SP4: NO), the CPU 12 of the wireless sensor 6 returns to the process of step SP2, and thereafter repeats the processes of steps SP2 to SP6.

(Breaking event processing and survival confirmation processing by radio repeater 7)
Next, FIG. 6 is a flowchart showing an example of a notification event process and a survival confirmation process RT2 by the radio wave repeater 7 of the present embodiment.

  For example, when the power is turned on, the CPU 22 of the radio repeater 7 starts a notification event process and a survival confirmation process RT2, and performs an initialization process including a hardware check and a survival confirmation timer restart (step SP11). ).

  Next, the CPU 22 of the radio wave repeater 7 has received a signal wirelessly transmitted from the wireless sensor 6 (notification event signal, event signal indicating battery voltage drop, survival confirmation signal, sensor information signal). Is checked (step SP12).

  As a result of the check, when a signal wirelessly transmitted from the wireless sensor 6 is received (step SP12: YES), the CPU 22 of the radio wave repeater 7 wirelessly receives the received signal from the wireless communication unit 25 via the antenna 26. Wireless transmission (relay) to the relay device 5 (step SP13).

  At that time, the CPU 22 of the radio wave repeater 7 records transmission (relay) history information addressed to the radio reception repeater 5 in the memory 23 (information management table 31) as necessary (step SP14). It should be noted that “as necessary” means that, for example, what is recorded may be separated from what is not recorded depending on the type of signal. In addition, when a signal indicating recovery (resolving) for a report or recovery (resolving) for a failure such as a battery voltage drop is relayed and transmitted by the radio wave repeater 7, the consistency between the two states is determined from the record of the occurrence and cancellation of such an event. It is also possible to confirm.

  On the other hand, when the signal wirelessly transmitted from the wireless sensor 6 is not received (step SP12: NO), the CPU 22 of the radio wave repeater 7 proceeds to the process of step SP15.

  In the process of step SP15, the CPU 22 of the radio repeater 7 checks whether or not the survival confirmation timer has timed out (step SP15). As a result of the check, if the survival confirmation timer has timed out (step SP15: YES), the CPU 22 of the radio wave repeater 7 generates a survival confirmation signal of the radio wave repeater 7 and confirms the survival from the radio communication unit 25 by the antenna 26. The signal is wirelessly transmitted to the wireless reception repeater 5 (step SP16).

  Along with the transmission of the survival confirmation signal, the CPU 22 of the radio wave repeater 7 records the transmission history information of the survival confirmation signal addressed to the wireless reception repeater 5 in the memory 23 (information management table 31) as necessary (step S31). SP17).

  Thereafter, the CPU 22 of the radio wave repeater 7 restarts the survival confirmation timer (step SP18). Subsequently, the CPU 22 of the radio wave repeater 7 returns to the process of step SP12, and thereafter repeats the processes of steps SP12 to SP18.

  If the survival confirmation timer has not timed out (step SP15: NO), the CPU 22 of the radio wave repeater 7 returns to the process of step SP12, and thereafter repeats the processes of steps SP12 to SP18.

(Notification event processing and survival confirmation processing by the wireless reception repeater 5)
Next, FIG. 7 is a flowchart showing an example of a notification event process and a survival confirmation process RT3 by the wireless reception repeater 5 of the present embodiment.

  For example, when the power is turned on, the CPU 42 of the wireless reception repeater 5 starts a notification event process and a survival confirmation process RT3, and performs an initialization process including a hardware check and a survival confirmation timer restart ( Step SP21).

  Next, the CPU 42 of the wireless reception repeater 5 transmits a signal wirelessly transmitted by the wireless sensor 6 and / or the radio wave relay 7 (report event signal, event signal indicating battery voltage drop, survival confirmation signal, sensor information). It is checked whether or not a signal has been received (step SP22).

  As a result of the check, when the wireless sensor 6 and / or the radio wave repeater 7 has received a signal transmitted wirelessly (step SP22: YES), the CPU 42 of the wireless reception repeater 5 receives the signal as necessary. The received radio signal reception history information is recorded in the memory 43 (information management table 52) (step SP23).

  On the other hand, when the wireless sensor 6 and / or the radio wave repeater 7 has not received a signal wirelessly transmitted (step SP22: NO), the CPU 42 of the wireless reception repeater 5 performs the process (survival confirmation process) of step SP27. )

  When the wireless signal transmitted from the wireless sensor 6 and / or the radio wave repeater 7 is received, the CPU 42 of the wireless reception repeater 5 determines whether the received wireless signal is a predetermined signal, for example, a notification event signal. , Whether it is a survival confirmation signal, an event signal indicating a failure such as a decrease in battery capacity, or an event signal indicating each recovery is checked (step SP24).

  The CPU 42 of the wireless reception repeater 5 generates a signal (for example, a warning signal, a survival confirmation abnormality signal, a failure signal, a recovery signal, etc.) according to the result of the check, and transmits the generated signal to the transmission path communication unit 46. Is transmitted to the receiver 3 (step SP25). Further, the CPU 42 of the radio reception repeater 5 records the transmission history information of the signal to the receiver 3 in the memory 43 (information management table 52) (step SP26). If the received radio signal is not a predetermined signal, for example, the signal may be ignored as an error.

  Further, in step SP27, the CPU 42 of the wireless reception repeater 5 times out the survival confirmation timer without receiving the survival confirmation signal from the wireless sensor 6 and / or the radio relay 7 belonging to the wireless monitoring line in charge of monitoring. Is checked (step SP27).

  When the survival confirmation timer times out without receiving the survival confirmation signal (step SP27: YES), the CPU 42 of the wireless reception repeater 5 has an abnormality in the corresponding wireless sensor 6 and / or radio wave repeater 7. Is generated, and the signal is transmitted to the receiver 3 by the transmission line communication unit 46 (step SP28).

  Along with the transmission, the CPU 42 of the wireless reception repeater 5 records the transmission history information of the abnormality occurrence notification to the receiver 3 in the memory 43 (information management table 52) (step SP29). Thereafter, the CPU 42 of the wireless reception repeater 5 returns to the process of step SP22, and thereafter repeats the processes of steps SP22 to SP29.

  When the survival confirmation timer has not timed out (step SP27: NO), the CPU 42 of the wireless reception repeater 5 returns to the process of step SP22, and thereafter repeats the processes of steps SP22 to SP29.

(Connection confirmation processing by radio wave repeater 7)
Next, FIG. 8 is a flowchart showing an example of connection confirmation processing RT4 by the radio wave repeater 7 of the present embodiment.

  For example, when the power is turned on, the CPU 22 of the radio repeater 7 starts the connection confirmation processing RT4 and checks whether or not a signal corresponding to the connection confirmation operation is received from the operation unit 21 (step SP31).

  As a result of the check, when the signal corresponding to the connection confirmation operation is not received from the operation unit 21 (step SP31: NO), the CPU 22 of the radio wave repeater 7 proceeds to the process of step SP37. On the other hand, when a signal corresponding to the connection confirmation operation is received from the operation unit 21 (step SP31: YES), the CPU 22 of the radio wave repeater 7 generates a connection confirmation request (command) and sends the request from the wireless communication unit 25. Wireless transmission is performed to the wireless reception repeater 5 belonging to the same wireless monitoring line through the antenna 26 (step SP32).

  By transmitting the connection confirmation request (command), the CPU 22 of the radio wave repeater 7 records the transmission history information to the radio reception repeater 5 in the memory 23 (information management table 31) (step SP33).

  After that, the CPU 22 of the radio wave repeater 7 checks whether or not the connection confirmation response signal is received from the radio reception repeater 5 through the antenna 26 and the radio communication unit 25 within a predetermined time (step SP34).

  As a result of the check, when the connection confirmation response signal is received from the radio reception repeater 5 within a predetermined time (step SP34: YES), the CPU 22 of the radio wave repeater 7 can receive the radio wave with the radio reception repeater 5. For example, on the display unit 24 (step SP35).

  On the other hand, when the connection confirmation response is not received from the radio reception repeater 5 within a predetermined time (step SP34: NO), the CPU 22 of the radio wave repeater 7 is not in a range that can be connected to the radio reception repeater 5. For example, the effect is displayed on the display unit 24 (step SP36).

  Further, the CPU 22 of the radio wave repeater 7 checks whether or not a connection confirmation request (command) has been received from the radio reception repeater 5 by the antenna 26 and the radio communication unit 25 (step SP37).

  As a result of the check, when a connection confirmation request is received from the wireless reception repeater 5 (step SP37: YES), the CPU 22 of the radio wave repeater 7 generates a connection confirmation response signal and sends the response from the wireless communication unit 25 to the antenna. The wireless transmission is performed to the wireless reception repeater 5 through the terminal 26 (step SP38).

  With the reception of the connection confirmation request and the transmission of the connection confirmation response signal, the CPU 22 of the radio wave repeater 7 records the respective history information in the memory 23 (information management table 31) (step SP39). Thereafter, the CPU 22 of the radio repeater 7 returns to the process of step SP31, and thereafter repeats the processes of steps SP31 to SP39.

  If the connection confirmation request has not been received from the wireless reception repeater 5 (step SP37: NO), the CPU 22 of the radio wave repeater 7 returns to the process of step SP31, and thereafter repeats the processes of steps SP31 to SP39. .

  Further, the connection confirmation processing by the CPU 42 of the wireless reception repeater 5 includes the wireless reception repeater 5 and the radio wave repeater 7 as the transmission confirmation source and the transmission destination of the connection confirmation request in each of the above steps SP31 to SP39. It corresponds to the processing replaced with.

(Information acquisition processing by radio wave repeater 7)
Next, FIG. 9 is a flowchart showing an example of information acquisition processing RT5 by the radio wave repeater 7 of the present embodiment.

  For example, when the power is turned on, the CPU 22 of the radio repeater 7 starts the information acquisition process RT5 and checks whether a signal corresponding to the information acquisition operation is received from the operation unit 21 (step SP41).

  As a result of the check, when a signal corresponding to the information acquisition operation is not received from the operation unit 21 (step SP41: NO), the CPU 22 of the radio wave repeater 7 proceeds to the process of step SP47. On the other hand, when a signal corresponding to the information acquisition operation is received from the operation unit 21 (step SP41: YES), the CPU 22 of the radio wave repeater 7 generates an information acquisition request (command) and sends the information acquisition request to the wireless communication unit. 25 is transmitted by radio to the radio reception repeater 5 from the antenna 26 (step SP42). The destination (field) of the information acquisition request is any one of the radio reception repeater 5 belonging to the same radio monitoring line, another radio reception repeater 5 and another radio wave repeater 7 belonging to different radio monitoring lines. An identifier is set.

  With the transmission of the information acquisition request (command), the CPU 22 of the radio wave repeater 7 records the transmission history information of the information acquisition request to the radio reception repeater 5 in the memory 23 (information management table 31) (step SP43). .

  After that, the CPU 22 of the radio wave repeater 7 checks whether or not an information acquisition response is received within a predetermined time from the radio reception repeater 5 belonging to the same radio monitoring line through the antenna 26 and the radio communication unit 25 (step). SP44).

  As a result of the check, when the information acquisition response signal is received from the wireless reception repeater 5 within a predetermined time (step SP44: YES), the CPU 22 of the radio wave repeater 7 transmits the information included in the received information acquisition response signal. All or part of the information is recorded in the memory 23 (information management table 31). At that time, the CPU 22 may also record the reception history information of the information acquisition response signal. Further, the CPU 22 may display all or part of the information included in the information acquisition response signal, for example, on the display unit 24 (step SP45).

  On the other hand, when the information acquisition response signal is not received from the wireless reception repeater 5 within a predetermined time (step SP44: NO), the CPU 22 of the radio wave repeater 7 indicates that the information acquisition response signal cannot be received, for example, a display unit 24 (step SP46).

  Whether the CPU 22 of the radio repeater 7 has received an information acquisition request (command) addressed to the radio repeater 7 through the antenna 26 and the radio communication unit 25 from the radio reception repeater 5 belonging to the same radio monitoring line. Is checked (step SP47).

  If the information acquisition request addressed to the radio wave repeater 7 is received as a result of the check (step SP47: YES), the CPU 22 of the radio wave repeater 7 generates an information acquisition response signal and transmits the response signal to the wireless communication unit. Radio transmission is performed from 25 through the antenna 26. Here, information on the transmission source (field) of the received information acquisition request is set in the destination (field) of the information acquisition response signal. If the destination of the received information acquisition request is not addressed to the radio wave repeater 7, the CPU 22 of the radio wave repeater 7 transfers the information acquisition request to a device corresponding to the destination information of the received information acquisition request (wireless transmission). (Step SP48). When a plurality of destinations are set in the information acquisition request, the information acquisition response signal can be returned and the received information acquisition request transferred at each destination.

  Accompanying reception / transfer of the information acquisition request and transmission of the information acquisition response signal, each history information is recorded in the memory 23 (information management table 31) (step SP49). Thereafter, the CPU 22 of the radio wave repeater 7 returns to the process of step SP41, and thereafter repeats the processes of steps SP41 to SP49.

  If an information acquisition request has not been received from the radio reception repeater 5 (step SP47: NO), the CPU 22 of the radio wave repeater 7 returns to the process of step SP41, and thereafter repeats the processes of steps SP41 to SP49. .

(Information acquisition processing by wireless reception repeater 5)
10 and 11 are flowcharts showing an example of the information acquisition process RT6 by the wireless reception repeater 5 of the present embodiment.

  For example, when the power is turned on, the CPU 42 of the wireless reception repeater 5 starts the information acquisition process RT6 and checks whether or not a signal corresponding to the information acquisition operation is received from the operation unit 41 (step SP51). .

  As a result of the check, when the signal corresponding to the information acquisition operation is not received from the operation unit 41 (step SP51: NO), the CPU 42 of the wireless reception repeater 5 proceeds to the process of step SP57.

  On the other hand, when a signal corresponding to the information acquisition operation is received from the operation unit 41 (step SP51: YES), the CPU 42 of the wireless reception repeater 5 generates an information acquisition request (command) and sends the request to the wireless communication unit. Wireless transmission is performed from 45 through the antenna 47 (step SP52). The identifier of the radio wave repeater 7 belonging to the same radio monitoring line or another radio receiving repeater 5 belonging to a different radio monitoring line can be set as the destination of the information acquisition request.

  With the transmission of the information acquisition request (command), the CPU 42 of the wireless reception repeater 5 records the transmission history information of the information acquisition request in the memory 43 (information management table 52) (step SP53).

  Thereafter, the CPU 42 of the radio reception repeater 5 transmits the radio relay 7 belonging to the same radio monitoring line or another radio reception repeater 5 belonging to a different radio monitoring line through the antenna 47 and the radio communication unit 45. It is checked whether an information acquisition response signal destined for the wireless reception repeater 5 is received within a predetermined time (steps SP54 and SP55).

  As a result of the check, when the information acquisition response signal destined for the wireless reception repeater 5 is not received within a predetermined time (step SP54: NO), the CPU 42 of the wireless reception repeater 5 determines the information acquisition response. The fact that the signal cannot be received (information acquisition NG) is displayed on the display unit 44, for example (step SP58). At the same time, the CPU 42 may transmit information indicating that the information acquisition response signal cannot be received to the receiver 3 as a communication abnormality or the like.

  On the other hand, when the information acquisition request addressed to the wireless reception repeater 5 is received within a predetermined time (steps SP54 and SP55: YES), the CPU 42 of the wireless reception repeater 5 responds to the received information acquisition response. All or part of the included information is recorded in the memory 43 (information management table 52). The CPU 42 may display all or part of the information included in the information acquisition response, for example, on the display unit 44 (step SP56).

  The information acquisition response signal is received within a predetermined time, but the destination of the response signal is not the radio reception repeater 5 (the radio repeater 7 belonging to the same or different radio monitoring line is the destination or other radio monitoring line belongs to other The wireless reception repeater 5 is the destination) (step SP54: YES, step SP55: NO), the CPU 42 of the wireless reception repeater 5 addresses the device according to the destination of the received information acquisition response signal. The information acquisition response is transferred (wireless transmission) (step SP57).

  Further, the CPU 42 of the radio reception repeater 5 transmits the radio relay 7 belonging to the same radio monitoring line or another radio reception repeater 5 belonging to a different radio monitoring line through the antenna 47 and the radio communication unit 45. It is checked whether an information acquisition request (command) destined for the radio reception repeater 5 has been received (steps SP59 and SP60).

  As a result of the check, when an information acquisition request addressed to the wireless reception repeater 5 is received (steps SP59 and SP60: YES), the CPU 42 of the wireless reception repeater 5 generates an information acquisition response signal, and The response is wirelessly transmitted from the wireless communication unit 45 to the information acquisition request source device through the antenna 47 (step SP61). The destination of the received information acquisition request is not the radio reception repeater 5 (the radio repeater 7 belonging to the same or different radio monitoring line is the destination, or another radio reception repeater 5 belonging to a different radio monitoring line is the destination (Step SP59 YES, Step SP60: NO), the CPU 42 of the wireless reception repeater 5 forwards (wirelessly transmits) the information acquisition request to a device corresponding to the destination of the received information acquisition request ( Step SP62). When a plurality of destinations are set in the information acquisition request, a reply to the information acquisition response and transfer of the received information acquisition request can be performed at each destination.

  With the reception / transfer of the information acquisition request and the transmission of the information acquisition response signal, the CPU 42 of the wireless reception repeater 5 records each history information in the memory 43 (information management table 52) (step SP63).

  Thereafter, the CPU 42 of the radio reception repeater 5 returns to step SP51 of FIG. 10, and thereafter repeats the processing of steps SP51 to SP61. Even when the information acquisition request has not been received (step SP59: NO), the CPU 42 of the wireless reception repeater 5 returns to the process of step SP51 in FIG. 10, and thereafter repeats the processes of steps SP51 to SP61. .

(Example of connection confirmation processing)
Next, FIG. 12 is a sequence diagram showing an example of a connection confirmation process between the radio wave repeater 7 and the radio reception repeater 5 of the present embodiment.

  First, the radio wave repeater 7 (CPU 22) installed on the second floor (2F) of the building 2 (see FIG. 1) receives a signal corresponding to the connection confirmation operation from the operation unit 21, for example (step SP71). A confirmation request (command) is wirelessly transmitted from the wireless communication unit 25 to the wireless reception repeater 5 installed on the same floor (2F) by the antenna 26 (step SP72). With the wireless transmission, the radio wave repeater 7 (CPU 22) records the transmission history information of the connection confirmation request in the memory 23 (information management table 31) (step SP73).

  On the other hand, when the radio reception repeater 5 (CPU 42) installed on the second floor receives a connection confirmation request from the radio wave repeater 7 installed on the same floor (2F) (step SP74), the connection confirmation response signal is sent to the same floor. Wireless transmission is performed to the radio repeater 7 of (2F) (step SP75). With the reception of the connection confirmation request and the transmission of the connection confirmation response signal, the CPU 42 records each history information in the memory 23 (information management table 31) (step SP76).

  When the radio wave repeater 7 (CPU 22) installed in 2F receives the connection confirmation response signal from the radio reception repeater 5 installed in the same floor (2F) (step SP77), the radio reception repeater 5 For example, the display unit 24 displays that the radio wave can be received from (a connectable range) (step SP78).

  The wireless link connection confirmation process between the radio wave repeater 7 installed on the third floor and the wireless reception repeater 5 installed on the third floor is the same as described above.

  As described above, according to the automatic fire alarm system 1 of the present embodiment, it is possible to easily confirm whether the radio wave repeater 7 can be connected wirelessly. The user can easily confirm the installation location where communication with the user 5 is possible.

(Example of information acquisition process)
Next, FIG.13 and FIG.14 is a sequence diagram which shows an example of the information acquisition process between the radio wave repeater 7 and the radio | wireless reception repeater 5 of this embodiment. 13 and 14, in the radio repeater 7 installed on the second floor of the building 2 (see FIG. 1), the radio reception repeater 5 for 2F, the radio reception repeater 5 for 3F, and the radio relay 7 for 3F. The operation example in the case of performing the communication for acquiring information from each of these is shown.

  First, when the radio wave repeater 7 (CPU 22) installed on the second floor of the building 2 receives, for example, a signal corresponding to the information acquisition operation from the operation unit 21 (step SP81), an information acquisition request (command) is transmitted from the antenna 26. Wireless transmission is performed (step SP82). The information acquisition request is, for example, sent to the ID of a communication target device (node), that is, to the radio reception repeater 5 installed on 2F, the radio reception repeater 5 installed on 3F, and 3F. Each ID with the installed radio wave repeater 7 is included in the destination information. With the wireless transmission of the information acquisition request, the radio wave repeater 7 (CPU 22) may record the transmission history information of the information acquisition request in the memory 23 (information management table 31) (step SP83).

  On the other hand, when the radio reception repeater 5 (CPU 42) installed on the second floor receives the information acquisition request from the radio wave repeater 7 installed on the same floor (2F) (step SP84), it is installed on the third floor in response to the request. Since the ID of the other wireless reception repeater 5 is included, an information acquisition request is wirelessly transmitted to the other wireless reception repeater 5 installed in 3F (step SP85).

  Further, the wireless reception repeater 5 (CPU 42) installed in 2F generates an information acquisition response signal for the information acquisition request received from the radio repeater 7 installed in 2F, and the response is installed in 2F. Wireless transmission is performed to the radio wave repeater 7 (step SP86). The process of step SP86 and the process of step SP85 may be interchanged.

  Note that the wireless reception repeater 5 (CPU 42) installed on the 2F includes, for example, information acquisition request / response signal reception / transmission history information with the radio wave repeater 7 installed on the 2F, 3F The transmission history information of the information acquisition request to the wireless reception repeater 5 installed in may be recorded in the memory 43 (information management table 52).

  On the other hand, when the wireless reception repeater 5 (CPU 42) installed in 3F receives the information acquisition request wirelessly transmitted from the wireless reception repeater 5 installed in a different floor (2F) (step SP87), Since the request includes the ID of the radio repeater 7 installed on the third floor, the information acquisition request is wirelessly transmitted from the antenna 47 to the radio repeater 7 installed on the same floor (3F) (step SP88). .

  Further, the wireless reception repeater 5 (CPU 42) installed in the 3F generates an information acquisition response signal for the information acquisition request received from the wireless reception repeater 5 installed in the 2F, and the response signal is set to 2F. Wireless transmission is performed to the installed wireless reception repeater 5 (step SP89). The order of the process of step SP89 and the process of step SP88 may be switched.

  Note that the radio reception repeater 5 (CPU 42) installed on the 3F is illustratively an information acquisition request / response signal reception / transmission history information with the radio reception repeater 5 installed on the 2F. The transmission history information of the information acquisition request to the radio wave repeater 7 installed on the same floor (3F) may be recorded in the memory 43 (information management table 52).

  On the other hand, when the wireless reception repeater 5 (CPU 42) installed in 2F receives the information acquisition response signal wirelessly transmitted from the wireless reception repeater 5 installed in 3F (step SP101), the received information acquisition The response signal is wirelessly transmitted to the 2F radio wave repeater 7 which is the transmission source of the information acquisition request (step SP102). Note that the wireless reception repeater 5 (CPU 42) installed in 2F may record the reception / transmission history information of the information acquisition response signal in the memory 43 (information management table 52), for example (step SP103). .

  Next, when the radio wave repeater 7 (CPU 22) installed in 3F receives the information acquisition request wirelessly transmitted from the radio reception repeater 5 on the same floor (3F) in step SP88 (step SP90), the request Includes the ID of the radio wave repeater 7, so an information acquisition response signal is generated for the received information acquisition request, and the information acquisition response is sent to the radio reception repeater 5 installed on the same floor (3F). The signal is wirelessly transmitted (step SP91).

  The radio wave repeater 7 (CPU 22) illustratively receives information acquisition request / response signal reception / transmission history information with the radio reception repeater 5 installed on the same floor (3F) in the memory 23 (information It may be recorded in the management table 31) (step SP92).

  Next, as shown in FIG. 14, when the radio reception repeater 5 (CPU 42) installed on the third floor receives an information acquisition response from the radio wave repeater 7 installed on the same floor (3F) (step SP93). Since the response includes the ID of the 2F radio wave repeater 7, the information acquisition response is wirelessly transmitted to the wireless reception repeater 5 installed on 2F (step SP94).

  Further, the wireless reception repeater 5 (CPU 42) installed on the 3F is illustratively the reception history information of the information acquisition response signal from the radio relay 7 installed on the same floor (3F) and / or a different floor. The transmission history information of the information acquisition response signal to the radio reception repeater 5 installed in (2F) may be recorded in the memory 43 (information management table 52) (step SP95). At this time, the radio reception repeater 5 (CPU 42) installed on the third floor may record all or part of the information included in the received information acquisition response signal together with the memory 43 (information management table 52). Good.

  On the other hand, when the wireless reception repeater 5 (CPU 42) installed in 2F receives the information acquisition response signal wirelessly transmitted by the wireless reception repeater 5 installed in 3F in step SP94 (step SP96), the response Since the signal includes the ID of the 2F radio wave repeater 7, the information acquisition response signal is wirelessly transmitted to the radio wave repeater 7 that is the transmission source of the information acquisition request (step SP97).

  The radio reception repeater 5 (CPU 42) installed on the second floor is installed on the same floor (2F) with the reception history information of the information acquisition response from the radio reception repeater 5 installed on a different floor (3F). The transmission history information of the information acquisition response to the radio wave repeater 7 may be recorded in the memory 43 (information management table 52) (step SP98). At this time, the radio reception repeater 5 (CPU 42) installed in 2F records all or part of the information included in the received information acquisition response signal together with the memory 43 (information management table 52). Good.

  The radio repeater 7 (CPU 22) installed on the second floor is installed on the same floor (2F) at step SP86 (see FIG. 13), step SP102 (see FIG. 13), and step SP97 (see FIG. 14). When the information acquisition response signal wirelessly transmitted from the wireless reception repeater 5 is received (step SP99), the information included in each information acquisition response, that is, the 2F wireless reception repeater 5 and the 3F wireless reception repeater All or part of the information acquired from each of the 5 and 3F radio wave repeaters 7 is recorded in the memory 23 (information management table 31), and the information is displayed on the display unit 24 as necessary (step SP100). In addition, the radio wave repeater 7 (CPU 22) installed in 2F may record together the reception history information of the received information acquisition response in the memory 23 (information management table 31), for example.

  All or part of the memory 23 (information management table 31) of the radio wave repeater 7 and all or part of information recorded in the memory 43 (information management table 52) of the radio reception repeater 5 are recorded after recording. You may make it the object included in the information acquisition response signal with respect to the information acquisition request received.

  In the above-described example, the communication target for information acquisition is the three devices (nodes) of the 2F radio reception repeater 5, the 3F radio reception repeater 5, and the 3F radio wave repeater 7. If any one or two IDs of three devices are included in the information acquisition request, information can be acquired from the one or two devices. In other words, the communication can be targeted for individual devices in the system 1, or a plurality of devices in the system 1 can be collectively targeted.

DESCRIPTION OF SYMBOLS 1 ... Automatic fire alarm system, 2 ... Building, 3 ... Receiver, 4 ... Transmission path, 5 ... Wireless reception repeater, 6 ... Wireless sensor, 7 ... Radio wave repeater, 11 ... Sensor part, 12, 22 , 42 ... CPU, 13 ... wireless transmission unit, 14, 26, 47 ... antenna, 15, 27 ... battery, 21, 41 ... operation unit, 23, 43 ... memory, 24, 44 ... display unit, 25, 45 ... wireless Communication unit, 28 ... Relay processing unit, 29, 50 ... Wireless communication confirmation processing unit, 30, 51 ... Information communication processing unit, 31, 52 ... Information management table, 32 ... Wireless relay unit, 33, 54 ... Connection confirmation unit, 34, 55 ... Information communication unit, 46 ... Transmission path communication unit, 49 ... Reception processing unit, 53 ... Radio reception unit, 61 ... Command, 62 ... Serial number field, 63 ... Source ID field, 64 ... Command code field, 65 ... Destination ID field, 6 ... check code field, 301,511 ... communication mode switching control unit

Claims (3)

A radio relay node that transmits an event signal indicating that an event that should generate an alarm has occurred in a monitoring area to the outside, and holds a transmission history of the transmitted event signal;
A plurality of relay nodes that receive the event signal from the radio wave relay node installed corresponding to a monitoring area and hold a reception history of the received event signal;
With
The relay nodes corresponding to different radio wave relay nodes are connected by a bidirectional transmission path,
The repeater node is
(1) The radio wave relay node transmits the transmission history to the repeater node in response to a command received from the repeater node, and the repeater node has consistency between its own event signal reception history and the transmission history. By confirming
(2) The repeater node transmits its own event signal reception history to the radio relay node, and the radio relay node confirms the consistency between the received event signal reception history and the transmission history of the repeater node. By doing
An alarm system for confirming consistency between the event signal reception history and the transmission history.   The communication is performed between the first radio wave relay node that is in communication connection with the first repeater node and the second radio wave relay node that is in communication connection with the second repeater node. Alarm system as described in. The alarm system according to claim 1, further comprising a receiver that performs alarm processing in response to reception of the event signal from the relay node.

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