JP2015087918A - Tunnel disaster prevention system - Google Patents

Tunnel disaster prevention system Download PDF

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JP2015087918A
JP2015087918A JP2013225287A JP2013225287A JP2015087918A JP 2015087918 A JP2015087918 A JP 2015087918A JP 2013225287 A JP2013225287 A JP 2013225287A JP 2013225287 A JP2013225287 A JP 2013225287A JP 2015087918 A JP2015087918 A JP 2015087918A
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transmission
control unit
fire detector
sub
reception circuit
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JP6110776B2 (en
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和之 大西
Kazuyuki Onishi
和之 大西
隆文 瀬戸口
Takafumi Setoguchi
隆文 瀬戸口
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Nohmi Bosai Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a tunnel disaster prevention system which can perform backup of a repeater to prevent failure in fire monitoring at any section of a tunnel.SOLUTION: On the occurrence of an abnormality in a first control section 21, a tunnel disaster prevention system 1 controls a second sub-relay 37 so that the first control section 21 puts a first fire detector 9 and a first transmitter-receiver circuit 19 into a disconnected state and a second control section 33 puts the first fire detector 9 and a second transmitter-receiver circuit 31 into a connected state on the basis of notification of a disaster prevention reception panel 3. On the occurrence of the abnormality in the second control section 33, the tunnel disaster prevention system 1 controls a first sub-relay 25 so that the second control section 33 puts a second fire detector 11 and the second transmitter-receiver circuit 31 into the disconnected state and the first control section 21 puts the second fire detector 11 and the first transmitter-receiver circuit 19 into the connected state on the basis of the notification of the disaster prevention reception panel 3.

Description

本発明は、防災受信盤と、該防災受信盤と伝送線を介して接続された複数の中継器と、各中継器と個別の幹線を介して接続された複数の火災検知器とを有し、防災受信盤が、各中継器を介して、複数の火災検知器と信号伝送するトンネル防災システムに関する。   The present invention has a disaster prevention receiving board, a plurality of repeaters connected to the disaster prevention receiving board via transmission lines, and a plurality of fire detectors connected to each repeater via individual trunk lines. The disaster prevention reception board relates to a tunnel disaster prevention system in which signals are transmitted to a plurality of fire detectors via each repeater.

一般的にトンネル防災システムは、一定範囲を監視して火災を検知するための複数の火災検知器と、該各火災検知器と火災信号等の信号を送受信して集約する防災受信盤とを有している。
トンネル防災システムとしては、防災受信盤と各火災検知器とが中継器を介して各種信号の送受信を行うもの（Ｒ型伝送方式）があり、このようなものとしては、例えば特許文献１のものが挙げられる。各火災検知器は幹線によって中継器に接続されている。 Generally, a tunnel disaster prevention system has a plurality of fire detectors for detecting a fire by monitoring a certain range, and a disaster prevention reception panel for transmitting and receiving each fire detector and signals such as fire signals. doing.
As a tunnel disaster prevention system, there is one in which a disaster prevention receiving board and each fire detector transmit and receive various signals via a repeater (R-type transmission system). Is mentioned. Each fire detector is connected to the repeater by a trunk line.

特開２００２−２４６９６２号Japanese Patent Application Laid-Open No. 2002-246962

長いトンネルを監視するためには、多くの火災検知器が必要であり、それ故、各火災検知器が接続される中継器の数が多くなり、中継器の故障する可能性が高くなる。
しかし、特許文献１には、中継器（特許文献１の「中継増幅盤」）の故障への対応については言及がない。そのため、防災受信盤は、ある中継器が故障すると該中継器に接続されている火災検知器によって火災監視していた区間については、火災監視できなくなるという問題がある。 In order to monitor a long tunnel, many fire detectors are required. Therefore, the number of repeaters to which each fire detector is connected increases, and the possibility of failure of the repeaters increases.
However, Patent Document 1 does not mention a response to the failure of the repeater (“Relay Amplifier Panel” in Patent Document 1). For this reason, the disaster prevention receiving board has a problem that when a certain relay unit breaks down, the fire monitoring cannot be performed for the section where the fire detector is connected to the relay unit.

本発明は、上記のような課題を解決するためになされたものであり、中継器に故障が生じてもバックアップを可能して火災監視できなくなる区間が生じないトンネル防災システムを提供することを目的とする。   The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide a tunnel disaster prevention system that does not cause a section in which a backup can be performed and a fire cannot be monitored even if a failure occurs in a repeater. And

（１）本発明に係るトンネル防災システムは、防災受信盤と、該防災受信盤と伝送線を介して接続された複数の中継器と、該各中継器に接続された複数の火災検知器とを有し、前記防災受信盤が、前記各中継器を介して、前記複数の火災検知器の状態監視を行うトンネル防災システムであって、
前記各中継器は、
平常時において第１火災検知器の状態監視を行う第１制御部と、平常時において第２火災検知器の状態監視を行う第２制御部と、前記第１制御部と前記第１火災検知器、前記第２火災検知器及び前記防災受信盤との信号の送受信を可能にする第１送受信回路と、前記第２制御部と前記第２火災検知器、前記第１火災検知器及び前記防災受信盤との信号の送受信を可能にする第２送受信回路と、
前記第１火災検知器と前記第１送受信回路及び前記第２送受信回路との接続／非接続、前記第２火災検知器と前記第２送受信回路及び前記第１送受信回路との接続／非接続を切り換えるスイッチング手段とを備え、
平常時においては、
前記スイッチング手段は、前記第１火災検知器と前記第１送受信回路を接続状態にすると共に前記第１火災検知器と前記第２送受信回路との接続を非接続状態にし、かつ、前記第２火災検知器と前記第２送受信回路を接続状態にすると共に前記第２火災検知器と第１送受信回路との接続を非接続状態にし、
前記第１制御部に異常が発生したときには、
前記スイッチング手段は、前記第１火災検知器と前記第１送受信回路を非接続状態にすると共に前記第１火災検知器と前記第２送受信回路を接続状態にし、
前記第２制御部に異常が発生したときには、
前記スイッチング手段は、前記第２火災検知器と前記第２送受信回路を非接続状態にすると共に前記第２火災検知器と前記第１送受信回路を接続状態にすることを特徴とするものである。 (1) A tunnel disaster prevention system according to the present invention includes a disaster prevention receiving board, a plurality of repeaters connected to the disaster prevention receiving board via transmission lines, and a plurality of fire detectors connected to the respective repeaters. And the disaster prevention receiving board is a tunnel disaster prevention system for monitoring the state of the plurality of fire detectors via each repeater,
Each repeater is
A first control unit that monitors the state of the first fire detector in a normal state, a second control unit that monitors a state of the second fire detector in a normal state, the first control unit, and the first fire detector A first transmission / reception circuit that enables transmission / reception of signals to / from the second fire detector and the disaster prevention reception board, the second control unit, the second fire detector, the first fire detector, and the disaster prevention reception. A second transmission / reception circuit that enables transmission / reception of signals to / from the board;
Connection / non-connection between the first fire detector and the first transmission / reception circuit and the second transmission / reception circuit, and connection / non-connection between the second fire detector and the second transmission / reception circuit and the first transmission / reception circuit. Switching means for switching,
In normal times,
The switching means connects the first fire detector and the first transmission / reception circuit, disconnects the first fire detector and the second transmission / reception circuit, and disconnects the second fire. The detector and the second transmission / reception circuit are connected and the connection between the second fire detector and the first transmission / reception circuit is disconnected.
When an abnormality occurs in the first control unit,
The switching means disconnects the first fire detector and the first transmission / reception circuit and connects the first fire detector and the second transmission / reception circuit.
When an abnormality occurs in the second control unit,
The switching means is characterized in that the second fire detector and the second transmission / reception circuit are disconnected, and the second fire detector and the first transmission / reception circuit are connected.

（２）また、上記（１）に記載のものにおいて、前記防災受信盤は、前記第１制御部及び前記第２制御部の異常を検知する異常検知手段と、該異常検知手段によって異常が検知されたときにこれを前記第１制御部または前記第２制御部の異常が生じていない方に通知する通知手段を備え、
前記第１制御部に異常が発生したときには、
前記防災受信盤は前記第１制御部に異常が発生した旨を前記第２制御部に通知し、
前記第２制御部は前記防災受信盤の通知に基づいて前記第１火災検知器と前記第２送受信回路を接続状態にするように前記スイッチング手段を制御し、
前記第２制御部に異常が発生したときには、
前記防災受信盤は前記第２制御部に異常が発生した旨を前記第１制御部に通知し、
前記第１制御部は前記防災受信盤の通知に基づいて前記第２火災検知器と前記第１送受信回路を接続状態にするように前記スイッチング手段を制御することを特徴とするものである。 (2) Further, in the above-described (1), the disaster prevention receiving board detects an abnormality by an abnormality detecting means for detecting an abnormality in the first control section and the second control section, and the abnormality detecting means. A notification means for notifying an abnormality of the first control unit or the second control unit when this is done,
When an abnormality occurs in the first control unit,
The disaster prevention reception board notifies the second control unit that an abnormality has occurred in the first control unit,
The second control unit controls the switching means to connect the first fire detector and the second transmission / reception circuit based on the notification of the disaster prevention reception board,
When an abnormality occurs in the second control unit,
The disaster prevention receiving board notifies the first control unit that an abnormality has occurred in the second control unit,
The first control unit controls the switching means so that the second fire detector and the first transmission / reception circuit are connected based on a notification from the disaster prevention reception board.

（３）また、上記（１）又は（２）に記載のものにおいて、前記スイッチング手段は、第１主リレーと第１副リレー、第２主リレーと第２副リレーを備えており、
前記第１主リレーは、第１主コモン接点と第１主メイク接点と第１主ブレイク接点とを有し、
前記第１副リレーは、第１副コモン接点と第１副メイク接点と第１副ブレイク接点とを有し、
前記第２主リレーは、第２主コモン接点と第２主メイク接点と第２主ブレイク接点とを有し、
前記第２副リレーは、第２副コモン接点と第２副メイク接点と第２副ブレイク接点とを有し、
前記第１主コモン接点は前記第１火災検知器と、前記第１主メイク接点は前記第１送受信回路と、前記第１主ブレイク接点は前記第１副ブレイク接点と接続され、
前記第１副コモン接点は前記第２副コモン接点と、前記第１副メイク接点は前記第１送受信回路と接続され、
前記第２主コモン接点は前記第２火災検知器と、前記第２主メイク接点は前記第２送受信回路と、前記第２主ブレイク接点は前記第２副ブレイク接点と接続され、
前記第２副メイク接点は前記第２送受信回路と接続されていることを特徴とするものである。 (3) Further, in the above (1) or (2), the switching means includes a first main relay and a first sub relay, a second main relay and a second sub relay,
The first main relay has a first main common contact, a first main make contact, and a first main break contact;
The first sub relay has a first sub common contact, a first sub make contact, and a first sub break contact,
The second main relay has a second main common contact, a second main make contact, and a second main break contact,
The second sub relay has a second sub common contact, a second sub make contact, and a second sub break contact,
The first main common contact is connected to the first fire detector, the first main make contact is connected to the first transmission / reception circuit, and the first main break contact is connected to the first sub-break contact,
The first sub-common contact is connected to the second sub-common contact, and the first sub-make contact is connected to the first transmission / reception circuit;
The second main common contact is connected to the second fire detector, the second main make contact is connected to the second transmitting / receiving circuit, and the second main break contact is connected to the second sub-break contact,
The second sub-make contact is connected to the second transmission / reception circuit.

（４）また、上記（１）乃至（３）のいずれかに記載のものにおいて、前記第１制御部及び前記第２制御部は個別の電源によって電源供給されていることを特徴とするものである。 (4) Further, in any of the above (1) to (3), the first control unit and the second control unit are supplied with power by individual power sources. is there.

（５）また、上記（１）乃至（３）のいずれかに記載のものにおいて、前記複数の中継器は２個の中継器が一対になっており、該各中継器は単一の電源を有しており、
前記一対の中継器のうち、
一方の中継器の前記電源は、前記一対の中継器のそれぞれの前記第１制御部に電源供給し、
他方の中継器の前記電源は、前記一対の中継器のそれぞれの前記第２制御部に電源供給していることを特徴とするものである。 (5) Moreover, in the above-described one of (1) to (3), the plurality of repeaters are a pair of two repeaters, and each repeater has a single power source. Have
Of the pair of repeaters,
The power supply of one repeater supplies power to the first control unit of each of the pair of repeaters,
The power supply of the other repeater supplies power to the second controller of each of the pair of repeaters.

本発明においては、第１制御部に異常が発生したときには、第１制御部は第１火災検知器と第１送受信回路を非接続状態にし、第２制御部は防災受信盤の通知に基づいて第１火災検知器と第２送受信回路を接続状態にするようにスイッチング手段を制御し、第２制御部に異常が発生したときには、第２制御部は第２火災検知器と第２送受信回路を非接続状態にし、第１制御部は防災受信盤の通知に基づいて第２火災検知器と第１送受信回路を接続状態にするようにスイッチング手段を制御するようにしたので、第１制御部又は第２制御部に故障が発生した場合においても、第１火災検知器及び第２火災検知器によって継続して火災監視を行うことができ、火災監視ができない区間が生じることがない。   In the present invention, when an abnormality occurs in the first control unit, the first control unit disconnects the first fire detector and the first transmission / reception circuit, and the second control unit is based on the notification from the disaster prevention reception board. The switching means is controlled so that the first fire detector and the second transmission / reception circuit are connected, and when an abnormality occurs in the second control unit, the second control unit connects the second fire detector and the second transmission / reception circuit. Since the first control unit controls the switching means so as to connect the second fire detector and the first transmission / reception circuit based on the notification from the disaster prevention reception panel, the first control unit or Even when a failure occurs in the second control unit, the first fire detector and the second fire detector can continuously perform fire monitoring, and there is no section in which fire monitoring is not possible.

本発明の一実施の形態に係る防災システムの中継器の平常時における内部状態の説明図である。It is explanatory drawing of the internal state in the normal time of the repeater of the disaster prevention system which concerns on one embodiment of this invention. 本発明の一実施の形態に係る防災システム全体の説明図である。It is explanatory drawing of the whole disaster prevention system which concerns on one embodiment of this invention. 本発明の一実施の形態に係る防災システムの中継器の第１制御部の故障時における内部状態の説明図である。It is explanatory drawing of the internal state at the time of failure of the 1st control part of the repeater of the disaster prevention system which concerns on one embodiment of this invention. 本発明の一実施の形態に係る防災システムの中継器の他の態様の説明図である。It is explanatory drawing of the other aspect of the repeater of the disaster prevention system which concerns on one embodiment of this invention. 本発明の一実施の形態に係る防災システムの中継器のさらに他の態様の説明図である。It is explanatory drawing of the further another aspect of the repeater of the disaster prevention system which concerns on one embodiment of this invention.

本発明の一実施の形態に係るトンネル防災システム１は、図２に示すように、防災受信盤３と、防災受信盤３と伝送線５を介して接続された複数の中継器７と、各中継器７に接続された複数の火災検知器（第１火災検知器９および第２火災検知器１１）とを有しており、防災受信盤３が各中継器７を介して複数の第１火災検知器９および第２火災検知器１１の状態監視を行うものである。
トンネル防災システム１は、中継器７を介して接続されている第１火災検知器９および第２火災検知器１１等の端末機器毎に固有のアドレスを設定し、該アドレスを用いて各種信号の送受信を行う、いわゆるＲ型伝送方式である。
なお、第１火災検知器９および第２火災検知器１１は、トンネル内に所定間隔（例えば２５ｍ間隔）で配置されて、所定範囲内の炎特有の波長の光を検出することで火災を検知可能になっている。
以下、上記各構成を詳細に説明する。 As shown in FIG. 2, the tunnel disaster prevention system 1 according to an embodiment of the present invention includes a disaster prevention receiving board 3, a plurality of repeaters 7 connected via the disaster prevention receiving board 3 and the transmission line 5, and each A plurality of fire detectors (first fire detector 9 and second fire detector 11) connected to the repeater 7, and the disaster prevention receiver 3 is connected to each of the plurality of first detectors via the repeaters 7. The state of the fire detector 9 and the second fire detector 11 is monitored.
The tunnel disaster prevention system 1 sets a unique address for each terminal device such as the first fire detector 9 and the second fire detector 11 connected via the repeater 7, and uses these addresses to transmit various signals. This is a so-called R-type transmission system that performs transmission and reception.
The first fire detector 9 and the second fire detector 11 are arranged at predetermined intervals (for example, 25 m intervals) in the tunnel, and detect fire by detecting light having a wavelength peculiar to flames within the predetermined range. It is possible.
Hereafter, each said structure is demonstrated in detail.

〔中継器〕
中継器７は、図１に示すように、複数の第１火災検知器９が接続された第１制御盤１３と、複数の第２火災検知器１１が接続された第２制御盤１５と、第１制御盤１３および第２制御盤１５に電源を供給するスイッチング電源１７とを有しており、各火災検知器９、１１等から発信される信号を変換して中継するものである。
中継器７は、図２に示すように、トンネル内に所定間隔（例えば７５ｍ間隔）で配置されている。
中継器７の各構成についてさらに以下に詳細に説明する。
なお、第１制御盤１３には複数の第１火災検知器９が接続されており、第２制御盤１５には複数の第２火災検知器１１が接続されているが、図１〜図５においては、一台ずつのみ図示している。 [Repeater]
As shown in FIG. 1, the repeater 7 includes a first control panel 13 to which a plurality of first fire detectors 9 are connected, a second control panel 15 to which a plurality of second fire detectors 11 are connected, It has a switching power supply 17 that supplies power to the first control panel 13 and the second control panel 15, and converts and relays signals transmitted from the fire detectors 9, 11 and the like.
As shown in FIG. 2, the repeaters 7 are arranged at predetermined intervals (for example, at intervals of 75 m) in the tunnel.
Each configuration of the repeater 7 will be described in detail below.
A plurality of first fire detectors 9 are connected to the first control panel 13, and a plurality of second fire detectors 11 are connected to the second control panel 15. In FIG. 1, only one unit is shown.

＜第１制御盤＞
第１制御盤１３は、図１に示すように、防災受信盤３と信号を送受信する第１送受信回路１９と、平常時において第１火災検知器９の状態監視を行う第１制御部２１と、第１主リレー２３および第１副リレー２５と、第１火災検知器９を第１制御盤１３に接続するための第１主接続端子部２７と、第１制御盤１３を第２制御盤１５に電気的に接続するための第１副接続端子部２９とを有している。
なお、第１火災検知器９は、端子部９ａを備えており、端子部９ａと第１主接続端子部２７を電線で接続することで第１制御盤１３に電気的に接続されている。
以下に第１制御盤１３の各構成についてさらに詳細に説明する。 <First control panel>
As shown in FIG. 1, the first control panel 13 includes a first transmission / reception circuit 19 that transmits and receives signals to and from the disaster prevention reception panel 3, and a first control unit 21 that monitors the state of the first fire detector 9 in normal times. The first main relay 23 and the first sub relay 25, the first main connection terminal portion 27 for connecting the first fire detector 9 to the first control panel 13, and the first control panel 13 as the second control panel 15 and a first sub-connecting terminal portion 29 for electrical connection.
In addition, the 1st fire detector 9 is provided with the terminal part 9a, and is electrically connected to the 1st control panel 13 by connecting the terminal part 9a and the 1st main connection terminal part 27 with an electric wire.
Below, each structure of the 1st control panel 13 is demonstrated in detail.

≪第１送受信回路≫
第１送受信回路１９は、防災受信盤３と第１制御部２１の間に設けられて、第１制御部２１と防災受信盤３の間の信号の送受信をする回路である。また、第１送受信回路１９は、これに接続されている第１火災検知器９又は第２火災検知器１１と第１制御部２１との信号の送受信を行う機能も有している。 ≪First transceiver circuit≫
The first transmission / reception circuit 19 is a circuit that is provided between the disaster prevention receiving board 3 and the first control unit 21 and transmits and receives signals between the first control unit 21 and the disaster prevention receiving board 3. The first transmission / reception circuit 19 also has a function of transmitting and receiving signals between the first fire detector 9 or the second fire detector 11 connected thereto and the first control unit 21.

≪第１制御部≫
第１制御部２１は、第１送受信回路１９を介して第１火災検知器９又は第２火災検知器１１と信号の送受信を行ってこれらの状態監視を行う。常時には第１送受信回路１９には第１火災検知器９が接続されており、第１制御部２１は第１火災検知器９の状態監視を行う。後述するように、第２制御部３３が故障した場合には、第２火災検知器１１が第１送受信回路１９に接続されることになるので、この場合には、第１制御部２１は第２火災検知器１１の状態監視を行う。
また、第１制御部２１は、第１送受信回路１９を介して、防災受信盤３と信号の送受信を行う。
さらに、第１制御部２１は、第１送受信回路１９を介して第１主リレー２３および第１副リレー２５に接続されており、これらのリレーを制御してメイク状態にする機能を有している。なお、平常時において第１主リレー２３は第１制御部２１によって制御されてメイク状態を維持しているが第１制御部２１が故障するとメイク状態を維持できなくなって自動的にブレイク状態となる。
第１制御部２１は、防災受信盤３から第１送受信回路１９を介して第２制御部３３が故障した旨の通知を受けると、第１副リレー２５をメイク状態にする。 ≪First control part≫
The 1st control part 21 transmits / receives a signal with the 1st fire detector 9 or the 2nd fire detector 11 via the 1st transmission / reception circuit 19, and monitors these states. The first fire detector 9 is always connected to the first transmission / reception circuit 19, and the first control unit 21 monitors the state of the first fire detector 9. As will be described later, when the second control unit 33 fails, the second fire detector 11 is connected to the first transmission / reception circuit 19, and in this case, the first control unit 21 is connected to the first control unit 21. 2 Monitor the state of the fire detector 11.
The first control unit 21 transmits and receives signals to and from the disaster prevention receiving board 3 via the first transmission / reception circuit 19.
Further, the first control unit 21 is connected to the first main relay 23 and the first sub relay 25 via the first transmission / reception circuit 19, and has a function of controlling these relays to make a make state. Yes. Note that the first main relay 23 is controlled by the first control unit 21 to maintain the make-up state during normal times, but if the first control unit 21 fails, the make-up state cannot be maintained and the break state is automatically entered. .
When the first control unit 21 receives a notification that the second control unit 33 has failed through the first transmission / reception circuit 19 from the disaster prevention receiving board 3, the first control unit 21 sets the first sub relay 25 in the make state.

≪第１主リレー及び第１副リレー≫
第１主リレー２３及び第１副リレー２５について図１に基づいて説明する。
第１主リレー２３は、第１主接続端子部２７の接続先、すなわち第１火災検知器９の接続先を第１送受信回路１９または第１副リレー２５に切り替えるためのリレーである。
第１主リレー２３は、第１主コモン接点２３ａと第１主メイク接点２３ｂと第１主ブレイク接点２３ｃとを有しており、第１主コモン接点２３ａは第１主接続端子部２７に、第１主メイク接点２３ｂは第１送受信回路１９に、第１主ブレイク接点２３ｃは第１副ブレイク接点２５ｃにそれぞれ接続されている。
第１主リレー２３は、平常時においてメイク状態、すなわち第１主コモン接点２３ａと第１主メイク接点２３ｂが接続された状態になっており、第１火災検知器９は第１送受信回路１９に接続されている。
第１主リレー２３がブレイク状態、すなわち第１主コモン接点２３ａと第１主ブレイク接点２３ｃが接続されると、第１火災検知器９は第１副リレー２５に接続される。 ≪First main relay and first sub relay≫
The first main relay 23 and the first sub relay 25 will be described with reference to FIG.
The first main relay 23 is a relay for switching the connection destination of the first main connection terminal portion 27, that is, the connection destination of the first fire detector 9 to the first transmission / reception circuit 19 or the first sub relay 25.
The first main relay 23 has a first main common contact 23a, a first main make contact 23b, and a first main break contact 23c, and the first main common contact 23a is connected to the first main connection terminal portion 27. The first main make contact 23b is connected to the first transmission / reception circuit 19, and the first main break contact 23c is connected to the first sub break contact 25c.
The first main relay 23 is normally in a make state, that is, a state in which the first main common contact 23 a and the first main make contact 23 b are connected, and the first fire detector 9 is connected to the first transmission / reception circuit 19. It is connected.
When the first main relay 23 is in a break state, that is, when the first main common contact 23 a and the first main break contact 23 c are connected, the first fire detector 9 is connected to the first sub relay 25.

第１副リレー２５は、第１副接続端子部２９の接続先を第１送受信回路１９または第１主リレー２３に切り替えるためのリレーである。
第１副リレー２５は、第１副コモン接点２５ａと第１副メイク接点２５ｂと第１副ブレイク接点２５ｃとを有しており、第１副コモン接点２５ａは第１副接続端子部２９に、第１副メイク接点２５ｂは第１送受信回路１９に、第１副ブレイク接点２５ｃは第１主リレー２３にそれぞれ接続されている。
第１副リレー２５は、平常時においてブレイク状態、すなわち第１副コモン接点２５ａと第１副ブレイク接点２５ｃが接続された状態になっており、第１副接続端子部２９は第１主リレー２３に接続されている。
第１副リレー２５がメイク状態、すなわち第１副コモン接点２５ａと第１副メイク接点２５ｂが接続されると、第１副接続端子部２９は第１送受信回路１９に接続される。 The first sub relay 25 is a relay for switching the connection destination of the first sub connection terminal portion 29 to the first transmission / reception circuit 19 or the first main relay 23.
The first sub relay 25 has a first sub common contact 25a, a first sub make contact 25b, and a first sub break contact 25c. The first sub common contact 25a is connected to the first sub connection terminal portion 29, The first sub-make contact 25 b is connected to the first transmission / reception circuit 19, and the first sub-break contact 25 c is connected to the first main relay 23.
The first sub relay 25 is in a break state in a normal state, that is, a state where the first sub common contact 25 a and the first sub break contact 25 c are connected, and the first sub connection terminal portion 29 is the first main relay 23. It is connected to the.
When the first sub relay 25 is in the make state, that is, when the first sub common contact 25 a and the first sub make contact 25 b are connected, the first sub connection terminal portion 29 is connected to the first transmission / reception circuit 19.

＜第２制御盤＞
第２制御盤１５は、図１に示すように、防災受信盤３と信号を送受信する第２送受信回路３１と、平常時において第２火災検知器１１の状態監視を行う第２制御部３３と、第２主リレー３５および第２副リレー３７と、第２火災検知器１１を第２制御盤１５に接続するための第２主接続端子部３９と、第２制御盤１５を第１制御盤１３に接続するための第２副接続端子部４１とを有している。
なお、第２火災検知器１１は、端子部１１ａを備えており、端子部１１ａと第２主接続端子部３９を電線で接続することで第２制御盤１５に電気的に接続されている。 <Second control panel>
As shown in FIG. 1, the second control panel 15 includes a second transmission / reception circuit 31 that transmits and receives signals to and from the disaster prevention reception panel 3, and a second control unit 33 that monitors the state of the second fire detector 11 in a normal state. The second main relay 35 and the second sub relay 37, the second main connection terminal portion 39 for connecting the second fire detector 11 to the second control panel 15, and the second control panel 15 as the first control panel. And a second sub-connecting terminal portion 41 for connection to the terminal 13.
In addition, the 2nd fire detector 11 is provided with the terminal part 11a, and is electrically connected to the 2nd control panel 15 by connecting the terminal part 11a and the 2nd main connection terminal part 39 with an electric wire.

第２主リレー３５は、第２主接続端子部３９の接続先を第２送受信回路３１または第２副リレー３７に切り替えるためのリレーである。
第２主リレー３５は、第２主コモン接点３５ａと第２主メイク接点３５ｂと第２主ブレイク接点３５ｃとを有しており、第２主コモン接点３５ａは第２主接続端子部３９と、第２主メイク接点３５ｂは第２送受信回路３１と、第２主ブレイク接点３５ｃは第２副ブレイク接点３７ｃとそれぞれ接続されている。
第２主リレー３５は、平常時においてメイク状態、すなわち第２主コモン接点３５ａと第２主メイク接点３５ｂが接続された状態になっており、第２火災検知器１１は第２送受信回路３１に接続されている。
第２主リレー３５がブレイク状態、すなわち第２主コモン接点３５ａと第２主ブレイク接点３５ｃが接続されると、第２火災検知器１１は第２副リレー３７に接続される。 The second main relay 35 is a relay for switching the connection destination of the second main connection terminal portion 39 to the second transmission / reception circuit 31 or the second sub relay 37.
The second main relay 35 includes a second main common contact 35a, a second main make contact 35b, and a second main break contact 35c. The second main common contact 35a includes a second main connection terminal portion 39, The second main make contact 35b is connected to the second transmitting / receiving circuit 31, and the second main break contact 35c is connected to the second sub-break contact 37c.
The second main relay 35 is normally in a make state, that is, a state in which the second main common contact 35 a and the second main make contact 35 b are connected, and the second fire detector 11 is connected to the second transmission / reception circuit 31. It is connected.
When the second main relay 35 is in a break state, that is, when the second main common contact 35 a and the second main break contact 35 c are connected, the second fire detector 11 is connected to the second sub relay 37.

第２副リレー３７は、第２副接続端子部４１の接続先を第２送受信回路３１または第２主リレー３５に切り替えるためのリレーである。
第２副リレー３７は、第２副コモン接点３７ａと第２副メイク接点３７ｂと第２副ブレイク接点３７ｃとを有しており、第２副コモン接点３７ａは第２副接続端子部４１に、第２副メイク接点３７ｂは第２送受信回路３１に、第２副ブレイク接点３７ｃは第２主リレー３５にそれぞれ接続されている。
第２副リレー３７は、平常時においてブレイク状態、すなわち第２副コモン接点３７ａと第２副ブレイク接点３７ｃが接続された状態になっており、第２副接続端子部４１は第２主リレー３５に接続されている。
第２副リレー３７がメイク状態、すなわち第２副コモン接点３７ａと第２副メイク接点３７ｂが接続されると、第２副接続端子部４１は第２送受信回路３１に接続される。 The second sub relay 37 is a relay for switching the connection destination of the second sub connection terminal portion 41 to the second transmission / reception circuit 31 or the second main relay 35.
The second sub-relay 37 has a second sub-common contact 37a, a second sub-make contact 37b, and a second sub-break contact 37c. The second sub-common contact 37a is connected to the second sub-connecting terminal portion 41. The second sub-make contact 37b is connected to the second transmitting / receiving circuit 31, and the second sub-break contact 37c is connected to the second main relay 35.
The second sub relay 37 is in a break state in a normal state, that is, a state where the second sub common contact 37a and the second sub break contact 37c are connected, and the second sub connection terminal portion 41 is connected to the second main relay 35. It is connected to the.
When the second sub relay 37 is in the make state, that is, when the second sub common contact 37 a and the second sub make contact 37 b are connected, the second sub connection terminal portion 41 is connected to the second transmitting / receiving circuit 31.

第２制御盤１５の他の構成は第１制御盤１３と同様であるため、その説明を省略する。   Since the other configuration of the second control panel 15 is the same as that of the first control panel 13, the description thereof is omitted.

中継器７は、以上のような構成であるため、第１制御盤１３の第１主リレー２３および第１副リレー２５、第２制御盤１５の第２主リレー３５および第２副リレー３７のメイク／ブレイク状態を切り替えることによって、第１火災検知器９の接続先を第１送受信回路１９にするか、第２送受信回路３１にするかを切り替えることができ、同様に、第２火災検知器１１の接続先を第２送受信回路３１にするか、第１送受信回路１９にするかを切り替えることができることができる。具体的には以下の通りである。   Since the repeater 7 is configured as described above, the first main relay 23 and the first sub relay 25 of the first control panel 13 and the second main relay 35 and the second sub relay 37 of the second control panel 15 are configured. By switching the make / break state, the connection destination of the first fire detector 9 can be switched to the first transmission / reception circuit 19 or the second transmission / reception circuit 31. Similarly, the second fire detector 11 can be switched between the second transmission / reception circuit 31 and the first transmission / reception circuit 19. Specifically, it is as follows.

第１火災検知器９を第１送受信回路１９に接続させるためには、上述したとおり、第１主リレー２３をメイク状態にする（図１参照）。これによって、第１火災検知器９は、第１主接続端子部２７、第１主リレー２３を経由して第１送受信回路１９に接続される。   In order to connect the first fire detector 9 to the first transmission / reception circuit 19, as described above, the first main relay 23 is put into the make state (see FIG. 1). Accordingly, the first fire detector 9 is connected to the first transmission / reception circuit 19 via the first main connection terminal portion 27 and the first main relay 23.

第１火災検知器９を第２送受信回路３１に接続させるためには、第１主リレー２３をブレイク状態、第１副リレー２５をブレイク状態にし、さらに第２副リレー３７をメイク状態にする（図３参照）。
こうすることで、第１火災検知器９は、第１主接続端子部２７、第１主リレー２３、第１副リレー２５、第１副接続端子部２９、第２副接続端子部４１、第２副リレー３７を経由して第２送受信回路３１に接続される。
この場合、第２送受信回路３１には、第１火災検知器９と第２火災検知器１１が接続され、第１火災検知器９及び第２火災検知器１１が第２制御部３３によって状態監視されることになる。 In order to connect the first fire detector 9 to the second transmission / reception circuit 31, the first main relay 23 is set to the break state, the first sub relay 25 is set to the break state, and the second sub relay 37 is set to the make state ( (See FIG. 3).
By doing so, the first fire detector 9 includes the first main connection terminal part 27, the first main relay 23, the first sub relay 25, the first sub connection terminal part 29, the second sub connection terminal part 41, the first The second transmission / reception circuit 31 is connected via the second sub relay 37.
In this case, the first fire detector 9 and the second fire detector 11 are connected to the second transmission / reception circuit 31, and the first control unit 33 monitors the state of the first fire detector 9 and the second fire detector 11. Will be.

同様に、各リレーのメイク／ブレイク状態を以下のように切り替えることによって、第２火災検知器１１の接続先を第２送受信回路３１にするか、第１送受信回路１９にするかを切り替えることができる。
第２火災検知器１１を第２送受信回路３１に接続させるためには、上述したとおり、第２主リレー３５をメイク状態にする（図１参照）。これによって、第２火災検知器１１は、第２主接続端子部３９、第２主リレー３５を経由して第２送受信回路３１に接続される。 Similarly, by switching the make / break state of each relay as follows, the connection destination of the second fire detector 11 can be switched to the second transmission / reception circuit 31 or the first transmission / reception circuit 19. it can.
In order to connect the second fire detector 11 to the second transmission / reception circuit 31, as described above, the second main relay 35 is put into the make state (see FIG. 1). Thus, the second fire detector 11 is connected to the second transmission / reception circuit 31 via the second main connection terminal portion 39 and the second main relay 35.

第２火災検知器１１を第１送受信回路１９に接続させるためには、第２主リレー３５をブレイク状態、第２副リレー３７をブレイク状態にし、さらに第１副リレー２５をメイク状態にする。
こうすることで、第２火災検知器１１は、第２主接続端子部３９、第２主リレー３５、第２副リレー３７、第２副接続端子部４１、第１副接続端子部２９、第１副リレー２５を経由して第１送受信回路１９に接続される。 In order to connect the second fire detector 11 to the first transmission / reception circuit 19, the second main relay 35 is set in the break state, the second sub relay 37 is set in the break state, and the first sub relay 25 is set in the make state.
In this way, the second fire detector 11 includes the second main connection terminal portion 39, the second main relay 35, the second sub relay 37, the second sub connection terminal portion 41, the first sub connection terminal portion 29, the first The first transmission / reception circuit 19 is connected via the first sub relay 25.

なお、平常時は図１の状態であり、すなわち第１火災検知器９は第１送受信回路１９に接続されており、第２火災検知器１１は第２送受信回路３１に接続されている。   Note that the state in FIG. 1 is normal, that is, the first fire detector 9 is connected to the first transmission / reception circuit 19, and the second fire detector 11 is connected to the second transmission / reception circuit 31.

なお、第１主リレー２３および第１副リレー２５と、第２主リレー３５および第２副リレー３７とが本発明のスイッチング手段に相当する。   The first main relay 23 and the first sub relay 25, and the second main relay 35 and the second sub relay 37 correspond to the switching means of the present invention.

＜スイッチング電源＞
スイッチング電源１７は、図示しない外部の電源装置に接続され、第１制御盤１３および第２制御盤１５に電源を供給するものであり、この電源供給を受けて第１制御部２１、第２制御部３３が稼働している。 <Switching power supply>
The switching power supply 17 is connected to an external power supply device (not shown) and supplies power to the first control panel 13 and the second control panel 15, and upon receiving this power supply, the first controller 21 and the second control Unit 33 is operating.

〔防災受信盤〕
防災受信盤３はトンネル防災システム１全体を監視するためのものである。防災受信盤３には、図２に示すように、複数の中継器７がシリアルに接続される。
防災受信盤３は、第１制御部２１及び第２制御部３３の異常を検知する異常検知手段３ａと、異常検知手段３ａによって異常が検知されたときにこれを第１制御部２１及び第２制御部３３に通知する通知手段３ｂを備えている。 [Disaster prevention reception board]
The disaster prevention reception board 3 is for monitoring the entire tunnel disaster prevention system 1. As shown in FIG. 2, a plurality of repeaters 7 are serially connected to the disaster prevention receiving board 3.
The disaster prevention receiving board 3 includes an abnormality detection means 3a for detecting an abnormality in the first control section 21 and the second control section 33, and an abnormality detected by the abnormality detection means 3a. A notification means 3b for notifying the control unit 33 is provided.

以上のように構成された本実施の形態に係るトンネル防災システム１を用いて、第１制御部２１又は第２制御部３３の故障時における火災検知器９、１１の接続先の切替え動作を、ある中継器７の第１制御部２１が故障した場合を例に挙げて以下に説明する。
平常時においては、上述したとおり、第１火災検知器９は第１送受信回路１９に接続されており、第２火災検知器１１は第２送受信回路３１に接続されており、第１制御部２１と第２制御部３３とによる火災監視が行われている。
そして、第１制御部２１と第２制御部３３は、防災受信盤３の異常検知手段３ａによって定期的に状態を確認する信号の送信が行われ、これに応答することで、異常の有無が監視されている。 Using the tunnel disaster prevention system 1 according to the present embodiment configured as described above, the switching operation of the connection destinations of the fire detectors 9 and 11 at the time of failure of the first control unit 21 or the second control unit 33, A case where the first control unit 21 of a certain repeater 7 fails will be described below as an example.
In normal times, as described above, the first fire detector 9 is connected to the first transmission / reception circuit 19, the second fire detector 11 is connected to the second transmission / reception circuit 31, and the first control unit 21. And the second control unit 33 perform fire monitoring.
And the 1st control part 21 and the 2nd control part 33 transmit the signal which confirms a state regularly by the abnormality detection means 3a of the disaster prevention receiving board 3, and the presence or absence of abnormality is responded to this. Being monitored.

第１制御部２１が故障すると、上述したとおり、第１主リレー２３をメイク状態に維持できなくなり、自動的にブレイク状態となる。これによって、第１火災検知器９は、第１送受信回路１９と非接続状態になるとともに、第２制御盤１５の第２副リレー３７に接続される。なお、この時点において第２副リレー３７はブレイク状態である。   When the first control unit 21 breaks down, as described above, the first main relay 23 cannot be maintained in the make state, and automatically enters the break state. Accordingly, the first fire detector 9 is disconnected from the first transmission / reception circuit 19 and is connected to the second sub relay 37 of the second control panel 15. At this time, the second sub relay 37 is in a break state.

一方、防災受信盤３は、異常検知手段３ａによって上記中継器７の第１制御部２１の異常を検知し、該検知した情報に基づいて、通知手段３ｂによって上記中継器７の第２制御部３３に第１制御部２１が故障した旨を通知する。
第２制御部３３は、上記通知に基づいて第２副リレー３７をメイク状態にする。
こうすることで、第１火災検知器９が第２送受信回路３１に接続され、第２制御部３３による火災監視を行うことができる。 On the other hand, the disaster prevention reception board 3 detects an abnormality of the first control unit 21 of the repeater 7 by the abnormality detection unit 3a, and based on the detected information, the second control unit of the repeater 7 by the notification unit 3b. 33 is notified that the first control unit 21 has failed.
The second control unit 33 puts the second sub relay 37 in the make state based on the notification.
By doing so, the first fire detector 9 is connected to the second transmission / reception circuit 31, and the second control unit 33 can perform fire monitoring.

以上のように本実施の形態においては、第１制御部２１が故障しても第１火災検知器９の接続先を第１送受信回路１９から第２送受信回路３１に切り替えることにより、引き続き第２制御部３３による火災監視を行うことができ、火災監視できなくなる区間が生じることがない。
なお、上記では第１制御部２１が故障した場合について説明したが、第２制御部３３が故障した場合についても同様であり、第２火災検知器１１が第１送受信回路１９に接続されることで第１制御部２１による火災監視を行うことができる。 As described above, in the present embodiment, even if the first control unit 21 breaks down, by switching the connection destination of the first fire detector 9 from the first transmission / reception circuit 19 to the second transmission / reception circuit 31, the second transmission / reception circuit 31 continues. Fire monitoring by the control unit 33 can be performed, and there is no section where fire monitoring cannot be performed.
In addition, although the case where the 1st control part 21 failed was demonstrated above, it is the same also when the 2nd control part 33 fails, and the 2nd fire detector 11 is connected to the 1st transmission / reception circuit 19. Thus, the fire monitoring by the first control unit 21 can be performed.

上記中継器７の構成では、第１制御盤１３と第２制御盤１５に対して一つのスイッチング電源１７で電源供給しているため、万が一、スイッチング電源１７が故障すると、各制御盤に設けられている第１制御部２１及び第２制御部３３の両方が動作しなくなってしまい、中継器７に接続されている火災検知器９、１１の全てに対して状態監視ができなくなり、火災監視できない区間が生じることになる。
そこで、第１制御盤１３と第２制御盤１５とで互いに独立した電源系統にすることが望ましい。このような中継器の一例を図４に示す。 In the configuration of the repeater 7, since the power is supplied to the first control panel 13 and the second control panel 15 by one switching power supply 17, if the switching power supply 17 fails, it is provided in each control panel. Both of the first control unit 21 and the second control unit 33 that are connected to each other stop operating, and it becomes impossible to monitor the state of all of the fire detectors 9 and 11 connected to the repeater 7, and cannot monitor the fire. An interval will occur.
Therefore, it is desirable that the first control panel 13 and the second control panel 15 have independent power supply systems. An example of such a repeater is shown in FIG.

図４に示す中継器５１は図２の中継器７の変形例であり、２つのスイッチング電源１７を有している。図４において、図２と同様のものには同一の符号を付している。
図４に示すように、第１制御盤１３と第２制御盤１５は、別々のスイッチング電源１７に接続されており、互いに独立した電源系統になっている。
そのため、仮に第１制御盤１３に電源を供給しているスイッチング電源１７が故障して、それによって第１制御部２１が動作しなくなった場合も、第２制御盤１５は動作し続けることができ、上記実施の形態１で説明したように、第１送受信回路１９を介して第１制御部２１に接続されていた第１火災検知器９を第２送受信回路３１に接続して、第２制御部３３による火災監視を行うことができる。 A repeater 51 shown in FIG. 4 is a modification of the repeater 7 of FIG. 2 and includes two switching power supplies 17. In FIG. 4, the same components as those in FIG.
As shown in FIG. 4, the first control panel 13 and the second control panel 15 are connected to separate switching power supplies 17 and are independent power supply systems.
Therefore, even if the switching power supply 17 that supplies power to the first control panel 13 fails and the first control unit 21 does not operate as a result, the second control panel 15 can continue to operate. As described in the first embodiment, the first fire detector 9 connected to the first control unit 21 via the first transmission / reception circuit 19 is connected to the second transmission / reception circuit 31 to perform the second control. Fire monitoring by the unit 33 can be performed.

中継器７の他の変形例を図５に示す。図５に示す中継器５３は一対になっており、それぞれ１つのスイッチング電源１７を備えている。図５において、図２と同様のものには同一の符号を付している。
図５に示すように、一対の中継器５３のうち、一方の中継器５３のスイッチング電源１７には、一対の中継器５３のそれぞれの第１制御盤１３が接続されており、他方の中継器５３のスイッチング電源１７には、一対の中継器５３のそれぞれの第２制御盤１５が接続されて電源が供給されている。このように、第１制御盤１３と第２制御盤１５は、互いに独立した電源系統になっている。 Another modification of the repeater 7 is shown in FIG. The repeaters 53 shown in FIG. 5 are paired and each has one switching power supply 17. In FIG. 5, the same components as those in FIG.
As shown in FIG. 5, the first control panel 13 of each of the pair of repeaters 53 is connected to the switching power supply 17 of one repeater 53 of the pair of repeaters 53, and the other repeater 53 The switching power supply 53 is connected to the second control panel 15 of each of the pair of relays 53 and is supplied with power. In this way, the first control panel 13 and the second control panel 15 are independent power systems.

従って、仮に各第１制御盤１３に電源を供給しているスイッチング電源１７が故障しても、各第２制御盤１５は動作し続けることができ、各第１火災検知器９の接続先を第２送受信回路３１に切り替えることによって、引き続き第２制御部３３による火災監視を行うことができる。
第２制御盤１５に電源を供給しているスイッチング電源１７が故障した場合でも同様であり、各第１火災検知器９および各第２火災検知器１１は第１送受信回路１９に接続されて、第１制御部２１による火災監視を行うことができる。
上記の説明から明らかなように、発明においては、図４の中継器５１や図５の中継器５３のように第１制御部２１と第２制御部３３に接続するスイッチング電源１７が別のものである場合、スイッチング電源１７が電源断となったことに起因して第１制御部２１と第２制御部３３が動作不能になった場合も、本発明における第１制御部２１や第２制御部３３に異常が発生したときに該当する。 Therefore, even if the switching power supply 17 that supplies power to each first control panel 13 fails, each second control panel 15 can continue to operate, and the connection destination of each first fire detector 9 can be determined. By switching to the second transmission / reception circuit 31, fire monitoring by the second control unit 33 can be continued.
The same applies to the case where the switching power supply 17 supplying power to the second control panel 15 fails. Each first fire detector 9 and each second fire detector 11 are connected to the first transmission / reception circuit 19, Fire monitoring by the first control unit 21 can be performed.
As is clear from the above description, in the invention, the switching power supply 17 connected to the first control unit 21 and the second control unit 33 is different as in the repeater 51 of FIG. 4 and the repeater 53 of FIG. In the case where the first control unit 21 and the second control unit 33 become inoperable due to the switching power supply 17 being turned off, the first control unit 21 and the second control in the present invention are also possible. This applies when an abnormality occurs in the section 33.

以上のように中継器５１、中継器５３においては、一方のスイッチング電源１７が故障しても、他方のスイッチング電源１７に接続されている制御盤によって、第１火災検知器９または第２火災検知器１１の接続先を、第１送受信回路１９または第２送受信回路３１に切り替えることにより、引き続き他方の制御盤の制御部による火災監視を行うことができ、火災監視できなくなる区間が生じることがない。   As described above, in the repeater 51 and the repeater 53, even if one of the switching power supplies 17 fails, the first fire detector 9 or the second fire detection is performed by the control panel connected to the other switching power supply 17. By switching the connection destination of the device 11 to the first transmission / reception circuit 19 or the second transmission / reception circuit 31, it is possible to continuously perform fire monitoring by the control unit of the other control panel, and there is no section where the fire monitoring cannot be performed. .

なお、本実施の形態では、第１制御盤１３および第２制御盤１５に接続される機器として火災検知器を記載しているが、第１制御盤１３および第２制御盤１５に接続される機器は火災検知器のみに限定されるものではなく、例えば信号変換器などを接続してもよい。   In the present embodiment, a fire detector is described as a device connected to the first control panel 13 and the second control panel 15, but is connected to the first control panel 13 and the second control panel 15. The device is not limited to a fire detector, and for example, a signal converter may be connected.

また、本実施の形態では、一つの中継器７に第１制御盤１３と第２制御盤１５が設置されて、いずれかの制御盤に異常が発生した場合に他方の制御盤でバックアップするようにしたものであるが、この考え方を拡張すれば、一つの中継器７に一つの第１制御盤１３が設置され、他の中継器７に他の第２制御盤１５が設置されている場合において、いずれかの制御盤に異常が発生した場合に他方の制御盤でバックアップすることもできる。   Further, in the present embodiment, the first control panel 13 and the second control panel 15 are installed in one repeater 7, and when an abnormality occurs in one of the control panels, backup is performed with the other control panel. However, if this concept is expanded, one repeater 7 is provided with one first control panel 13 and the other repeater 7 is provided with another second control panel 15. When an abnormality occurs in one of the control panels, the other control panel can also back up.

１ トンネル防災システム
３ 防災受信盤
３ａ 異常検知手段
３ｂ 通知手段
５ 伝送線
７ 中継器
９ 第１火災検知器
９ａ 端子部
１１ 第２火災検知器
１１ａ 端子部
１３ 第１制御盤
１５ 第２制御盤
１７ スイッチング電源
１９ 第１送受信回路
２１ 第１制御部
２３ 第１主リレー
２３ａ 第１主コモン接点
２３ｂ 第１主メイク接点
２３ｃ 第１主ブレイク接点
２５ 第１副リレー
２５ａ 第１副コモン接点
２５ｂ 第１副メイク接点
２５ｃ 第１副ブレイク接点
２７ 第１主接続端子部
２９ 第１副接続端子部
３１ 第２送受信回路
３３ 第２制御部
３５ 第２主リレー
３５ａ 第２主コモン接点
３５ｂ 第２主メイク接点
３５ｃ 第２主ブレイク接点
３７ 第２副リレー
３７ａ 第２副コモン接点
３７ｂ 第２副メイク接点
３７ｃ 第２副ブレイク接点
３９ 第２主接続端子部
４１ 第２副接続端子部
５１ 中継器（他の態様）
５３ 中継器（さらに他の態様） DESCRIPTION OF SYMBOLS 1 Tunnel disaster prevention system 3 Disaster prevention receiving board 3a Abnormality detection means 3b Notification means 5 Transmission line 7 Repeater 9 1st fire detector 9a Terminal part 11 2nd fire detector 11a Terminal part 13 1st control board 15 2nd control board 17 Switching power supply 19 First transmission / reception circuit 21 First controller 23 First main relay 23a First main common contact 23b First main make contact 23c First main break contact 25 First sub relay 25a First sub common contact 25b First sub Make contact 25c 1st sub-break contact 27 1st main connection terminal part 29 1st sub-connection terminal part 31 2nd transmission / reception circuit 33 2nd control part 35 2nd main relay 35a 2nd main common contact 35b 2nd main make contact 35c 2nd main break contact 37 2nd sub relay 37a 2nd sub common contact 37b 2nd sub make contact 37c 2nd sub break contact 39 second main connection terminal portion 41 and the second auxiliary connection terminal portions 51 repeaters (other embodiments)
53 Repeater (further aspects)

Claims (5)

防災受信盤と、該防災受信盤と伝送線を介して接続された複数の中継器と、該各中継器に接続された複数の火災検知器とを有し、前記防災受信盤が、前記各中継器を介して、前記複数の火災検知器の状態監視を行うトンネル防災システムであって、
前記各中継器は、
平常時において第１火災検知器の状態監視を行う第１制御部と、平常時において第２火災検知器の状態監視を行う第２制御部と、前記第１制御部と前記第１火災検知器、前記第２火災検知器及び前記防災受信盤との信号の送受信を可能にする第１送受信回路と、前記第２制御部と前記第２火災検知器、前記第１火災検知器及び前記防災受信盤との信号の送受信を可能にする第２送受信回路と、
前記第１火災検知器と前記第１送受信回路及び前記第２送受信回路との接続／非接続、前記第２火災検知器と前記第２送受信回路及び前記第１送受信回路との接続／非接続を切り換えるスイッチング手段とを備え、
平常時においては、
前記スイッチング手段は、前記第１火災検知器と前記第１送受信回路を接続状態にすると共に前記第１火災検知器と前記第２送受信回路との接続を非接続状態にし、かつ、前記第２火災検知器と前記第２送受信回路を接続状態にすると共に前記第２火災検知器と第１送受信回路との接続を非接続状態にし、
前記第１制御部に異常が発生したときには、
前記スイッチング手段は、前記第１火災検知器と前記第１送受信回路を非接続状態にすると共に前記第１火災検知器と前記第２送受信回路を接続状態にし、
前記第２制御部に異常が発生したときには、
前記スイッチング手段は、前記第２火災検知器と前記第２送受信回路を非接続状態にすると共に前記第２火災検知器と前記第１送受信回路を接続状態にすることを特徴とするトンネル防災システム。 A disaster prevention receiver, a plurality of relays connected to the disaster prevention receiver via transmission lines, and a plurality of fire detectors connected to the relays; A tunnel disaster prevention system that monitors the state of the plurality of fire detectors via a repeater,
Each repeater is
A first control unit that monitors the state of the first fire detector in a normal state, a second control unit that monitors a state of the second fire detector in a normal state, the first control unit, and the first fire detector A first transmission / reception circuit that enables transmission / reception of signals to / from the second fire detector and the disaster prevention reception board, the second control unit, the second fire detector, the first fire detector, and the disaster prevention reception. A second transmission / reception circuit that enables transmission / reception of signals to / from the board;
Connection / non-connection between the first fire detector and the first transmission / reception circuit and the second transmission / reception circuit, and connection / non-connection between the second fire detector and the second transmission / reception circuit and the first transmission / reception circuit. Switching means for switching,
In normal times,
The switching means connects the first fire detector and the first transmission / reception circuit, disconnects the first fire detector and the second transmission / reception circuit, and disconnects the second fire. The detector and the second transmission / reception circuit are connected and the connection between the second fire detector and the first transmission / reception circuit is disconnected.
When an abnormality occurs in the first control unit,
The switching means disconnects the first fire detector and the first transmission / reception circuit and connects the first fire detector and the second transmission / reception circuit.
When an abnormality occurs in the second control unit,
The said switching means makes a said 2nd fire detector and a said 2nd transmission / reception circuit a non-connection state, and makes the said 2nd fire detector and a said 1st transmission / reception circuit a connection state, The tunnel disaster prevention system characterized by the above-mentioned. 前記防災受信盤は、前記第１制御部及び前記第２制御部の異常を検知する異常検知手段と、該異常検知手段によって異常が検知されたときにこれを前記第１制御部または前記第２制御部の異常が生じていない方に通知する通知手段を備え、
前記第１制御部に異常が発生したときには、
前記防災受信盤は前記第１制御部に異常が発生した旨を前記第２制御部に通知し、
前記第２制御部は前記防災受信盤の通知に基づいて前記第１火災検知器と前記第２送受信回路を接続状態にするように前記スイッチング手段を制御し、
前記第２制御部に異常が発生したときには、
前記防災受信盤は前記第２制御部に異常が発生した旨を前記第１制御部に通知し、
前記第１制御部は前記防災受信盤の通知に基づいて前記第２火災検知器と前記第１送受信回路を接続状態にするように前記スイッチング手段を制御することを特徴とする請求項１記載のトンネル防災システム。 The disaster prevention receiving board is configured to detect abnormality in the first control unit and the second control unit, and when the abnormality is detected by the abnormality detection unit, the abnormality detection unit detects the abnormality. Provide notification means to notify the person who has not an abnormality of the control unit,
When an abnormality occurs in the first control unit,
The disaster prevention reception board notifies the second control unit that an abnormality has occurred in the first control unit,
The second control unit controls the switching means to connect the first fire detector and the second transmission / reception circuit based on the notification of the disaster prevention reception board,
When an abnormality occurs in the second control unit,
The disaster prevention receiving board notifies the first control unit that an abnormality has occurred in the second control unit,
The said 1st control part controls the said switching means so that the said 2nd fire detector and a said 1st transmission / reception circuit may be in a connection state based on the notification of the said disaster prevention receiving board. Tunnel disaster prevention system. 前記スイッチング手段は、第１主リレーと第１副リレー、第２主リレーと第２副リレーを備えており、
前記第１主リレーは、第１主コモン接点と第１主メイク接点と第１主ブレイク接点とを有し、
前記第１副リレーは、第１副コモン接点と第１副メイク接点と第１副ブレイク接点とを有し、
前記第２主リレーは、第２主コモン接点と第２主メイク接点と第２主ブレイク接点とを有し、
前記第２副リレーは、第２副コモン接点と第２副メイク接点と第２副ブレイク接点とを有し、
前記第１主コモン接点は前記第１火災検知器と、前記第１主メイク接点は前記第１送受信回路と、前記第１主ブレイク接点は前記第１副ブレイク接点と接続され、
前記第１副コモン接点は前記第２副コモン接点と、前記第１副メイク接点は前記第１送受信回路と接続され、
前記第２主コモン接点は前記第２火災検知器と、前記第２主メイク接点は前記第２送受信回路と、前記第２主ブレイク接点は前記第２副ブレイク接点と接続され、
前記第２副メイク接点は前記第２送受信回路と接続されていることを特徴とする請求項１又は２に記載のトンネル防災システム。 The switching means includes a first main relay and a first sub relay, a second main relay and a second sub relay,
The first main relay has a first main common contact, a first main make contact, and a first main break contact;
The first sub relay has a first sub common contact, a first sub make contact, and a first sub break contact,
The second main relay has a second main common contact, a second main make contact, and a second main break contact,
The second sub relay has a second sub common contact, a second sub make contact, and a second sub break contact,
The first main common contact is connected to the first fire detector, the first main make contact is connected to the first transmission / reception circuit, and the first main break contact is connected to the first sub-break contact,
The first sub-common contact is connected to the second sub-common contact, and the first sub-make contact is connected to the first transmission / reception circuit;
The second main common contact is connected to the second fire detector, the second main make contact is connected to the second transmitting / receiving circuit, and the second main break contact is connected to the second sub-break contact,
The tunnel disaster prevention system according to claim 1 or 2, wherein the second sub-make contact is connected to the second transmission / reception circuit. 前記第１制御部及び前記第２制御部は個別の電源によって電源供給されていることを特徴とする請求項１乃至３のいずれか一項に記載のトンネル防災システム。   The tunnel disaster prevention system according to any one of claims 1 to 3, wherein the first control unit and the second control unit are supplied with power by individual power sources. 前記複数の中継器は２個の中継器が一対になっており、該各中継器は単一の電源を有しており、
前記一対の中継器のうち、
一方の中継器の前記電源は、前記一対の中継器のそれぞれの前記第１制御部に電源供給し、
他方の中継器の前記電源は、前記一対の中継器のそれぞれの前記第２制御部に電源供給していることを特徴とする請求項１乃至３のいずれか一項に記載のトンネル防災システム。 The plurality of repeaters are a pair of two repeaters, and each repeater has a single power source,
Of the pair of repeaters,
The power supply of one repeater supplies power to the first control unit of each of the pair of repeaters,
The tunnel disaster prevention system according to any one of claims 1 to 3, wherein the power supply of the other repeater supplies power to the second control unit of each of the pair of repeaters.
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