JP2022116306A - disaster prevention system - Google Patents

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JP2022116306A
JP2022116306A JP2022091319A JP2022091319A JP2022116306A JP 2022116306 A JP2022116306 A JP 2022116306A JP 2022091319 A JP2022091319 A JP 2022091319A JP 2022091319 A JP2022091319 A JP 2022091319A JP 2022116306 A JP2022116306 A JP 2022116306A
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fire detection
contamination
monitoring
failure
detection devices
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JP7432658B2 (en
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秀成 松熊
Hidenari Matsukuma
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Hochiki Corp
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Abstract

PROBLEM TO BE SOLVED: To enable an appropriate monitoring work by optimizing an alarm display on a disaster prevention receiving panel for a failure when a monitoring area is monitored in an overlapping manner by a fire detection device.
SOLUTION: A plurality of fire detection devices 16 are arranged at boundaries of monitoring areas A1 to Ai+1, and monitor a monitoring area Ai in an overlapping manner. A disaster prevention receiving panel 10 repeatedly transmits a call signal for sequentially specifying a plurality of fire detection devices 16 and receives a response signal to the call signal, and the disaster prevention receiving panel determines a sign of monitoring failure or a monitoring failure in the monitoring area Ai based upon a reception state of the response signal to the call signal, and based on a combination of a failure sign condition and a failure condition of each of the fire detection devices 16 that monitor the monitoring area Ai in an overlapping manner.
SELECTED DRAWING: Figure 2
COPYRIGHT: (C)2022,JPO&INPIT

Description

本発明は、防災受信盤から引き出された信号線に接続された火災検知装置により、トンネル長手方向に所定間隔に区分された監視エリアの火災を監視する防災システムに関する。 TECHNICAL FIELD The present invention relates to a disaster prevention system that monitors fires in monitoring areas divided at predetermined intervals in the longitudinal direction of a tunnel by a fire detection device connected to a signal line drawn out from a disaster prevention receiving panel.

従来、自動車専用道路等のトンネルには、トンネル内で発生する火災事故から人身及び車両等を守るため、火災を監視する火災検知装置が設置され、防災受信盤から引き出された信号線に接続されている。 Conventionally, in order to protect people and vehicles from fire accidents that occur in tunnels, fire detection devices that monitor fires are installed in tunnels such as motorways, etc., and are connected to signal lines drawn from disaster prevention receivers. ing.

火災検知装置はトンネル長手方向に沿って例えば25m間隔、或いは50m間隔に区分された監視エリアの境界に設置され、火災検知装置は左右の両方向に検知エリアを持ち、隣接して配置された火災検知装置により同じ監視エリアの火災を重複して監視している。 The fire detection device is installed at the boundary of the monitoring area divided into, for example, 25 m intervals or 50 m intervals along the longitudinal direction of the tunnel, and the fire detection device has detection areas in both left and right directions, and is adjacent to the fire detection. Equipment monitors fires in the same monitored area redundantly.

また、火災検知装置は透光性窓を介してトンネル内で発生する火災炎からの放射線、たとえば赤外線を監視しており、炎の監視機能を維持するために、透光性窓の汚れを監視している。 In addition, the fire detection device monitors radiation from fire flames generated in the tunnel through the translucent window, such as infrared rays. is doing.

透光性窓の汚れ監視は、火災検知装置に設けた試験光源から定期的に試験光を、検知装置外部の検知出エリア側空間を経由し透光性窓に入射し受光素子で受光して、このときの受光レベルを初期無汚損時のそれと比較するなどして減光率を汚損レベルとして求め、汚損レベルが所定の閾値を超えたら汚損信号を防災受信盤に送信して汚損警報を出力している。また、汚損閾値に対しそれより低い汚損予兆閾値を設定し、汚損レベルが汚れ予兆閾値を超えた場合に汚損予兆信号を防災受信盤に送信して汚損予兆警報を出力するようにしている。 In order to monitor the contamination of the translucent window, the test light from the test light source installed in the fire detection device is periodically incident on the translucent window via the detection exit area side space outside the detection device and received by the light receiving element. At this time, the light reception level at this time is compared with that at the time of initial non-fouling to obtain the light attenuation rate as the fouling level, and when the fouling level exceeds a predetermined threshold, a fouling signal is sent to the disaster prevention receiving panel and a fouling alarm is output. is doing. In addition, a contamination predictive threshold lower than the contamination threshold is set, and when the contamination level exceeds the contamination predictive threshold, a contamination predictive signal is transmitted to the disaster prevention receiving panel to output a contamination predictive warning.

更に、トンネル内に設置している火災検知装置は環境内を浮遊する汚損物質付着などにより時間の経過と共に透光性窓の汚れが増加することから、一定の期間毎に透光性窓の清掃を行っている。 In addition, the fire detection device installed in the tunnel is cleaned at regular intervals because the dirt on the translucent window increases over time due to the adhesion of pollutants floating in the environment. It is carried out.

ここで、防災受信盤で汚損予兆警報が出力された場合の火災検知装置の汚損は、透光性窓の汚損は進んでいるが、監視エリア全部の監視が可能な状態にある。これに対し防災受信盤で汚損警報が出力された火災検知装置の汚損は、透光性窓の汚損が更に進んで、監視エリア全部の監視ができず、火災検知装置に近い監視エリアの一部しか監視できない状態にあり、隣接した火災検知装置による同一監視エリアの重複監視という監視機能が損なわれていることから、汚損警報を出した火災検知装置の清掃が必要となる。 Here, when the disaster prevention receiver outputs a contamination sign warning, the contamination of the fire detection device is in a state where the entire monitoring area can be monitored, although the contamination of the translucent window is progressing. On the other hand, the contamination of the fire detection device that output the contamination alarm on the disaster prevention receiver panel further progressed the contamination of the translucent window, making it impossible to monitor the entire monitoring area, and the part of the monitoring area close to the fire detection device. Since the monitoring function of redundant monitoring of the same monitoring area by adjacent fire detection devices is impaired, it is necessary to clean the fire detection device that issued the contamination alarm.

特開2000-315285号公報JP-A-2000-315285 特開2002-163736号公報JP-A-2002-163736 特開2002-063664号公報JP 2002-063664 A

しかしながら、このような隣接して配置された火災検知装置により同一の監視エリアを重複して監視する場合にあっては、防災受信盤は、隣接した火災検知装置の何れか一方が汚損予兆となった場合、汚損予兆となっていない他方の火災検知装置により監視エリア全部の監視が正常に行われているにも関わらず、その監視エリアに対応して汚れ予兆警報を報知しているが、この段階での警報に対する対処は緊急度の高いものではない。特に、複数の監視エリアについて、このような緊急を要さない汚れ予兆警報が同時期に出されたような場合には、かえって本来の火災監視業務に支障を来たす恐れがある。 However, when the same monitoring area is redundantly monitored by fire detection devices arranged adjacent to each other, the disaster prevention receiving panel may indicate that one of the adjacent fire detection devices is a sign of contamination. In this case, even though the other fire detection device, which does not indicate a sign of contamination, normally monitors the entire monitored area, a contamination sign alarm is issued corresponding to the monitored area. Responses to alerts in stages are not of high urgency. In particular, when such non-urgent contamination warnings are issued at the same time for a plurality of monitoring areas, the original fire monitoring work may be hindered.

本発明は、監視エリアを火災検知装置により重複監視している場合の汚損に対する防災受信盤での警報表示を最適化して、適切な監視業務を可能とする防災システムを提供することを目的とする。 It is an object of the present invention to provide a disaster prevention system that enables appropriate monitoring work by optimizing the warning display on the disaster prevention receiver panel against contamination when the monitored area is redundantly monitored by fire detection devices. .

(防災システム1)
本発明は、受信装置に複数の検知装置を接続した防災システムであって、
火災検知装置は、
監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災の有無を判定した場合に、受信装置からの呼出信号に対する応答信号に火災検出情報を設定して受信装置へ送信する火災判定部と、
を備え、
受信装置は、
複数の火災検知装置を順次指定した呼出信号を繰り返し送信して、呼出信号に対する応答信号を受信し、
出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の火災検知装置の故障状況が所定の故障状態であるか、故障状況に至る予兆と認められる故障予兆状態であるかを判定し、
相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々の故障予兆状態及び故障状態の組み合わせに基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 1)
The present invention is a disaster prevention system in which a plurality of detection devices are connected to a receiving device,
Fire detection equipment
a light receiving unit that receives radiation from a monitored area and converts it into an electrical signal;
a fire determination unit that sets fire detection information in a response signal to a call signal from a receiving device and transmits the response signal to the receiving device when the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving device; ,
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of fire detection devices, receiving a response signal to the call signal,
Based on the reception status of the response signal to the outgoing signal, the failure status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined failure status or reaches a failure status. determine whether it is in a failure predictor state that is recognized as a predictor;
Determining a monitoring failure sign or monitoring failure in a corresponding monitoring area based on a combination of failure portent states and failure states of each of a plurality of fire detection devices that redundantly monitor the same monitoring area. do.

(防災システム2)
本発明は、受信装置に複数の検知装置を接続した防災システムであって、
火災検知装置は、
監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災の有無を判定した場合に、受信装置からの呼出信号に対する応答信号に火災検出情報を設定して受信装置へ送信する火災判定部と、
を備え、
受信装置は、
複数の火災検知装置を順次指定した呼出信号を繰り返し送信して、呼出信号に対する応答信号を受信し、
呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の火災検知装置の故障状況が所定の故障状態であるか、故障状況に至る予兆と認められる故障予兆状態であるかを判定し、
相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々の故障予兆状態及び故障状態の組み合わせの推移に基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 2)
The present invention is a disaster prevention system in which a plurality of detection devices are connected to a receiving device,
Fire detection equipment
a light receiving unit that receives radiation from a monitored area and converts it into an electrical signal;
a fire determination unit that sets fire detection information in a response signal to a call signal from a receiving device and transmits the response signal to the receiving device when the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving device; ,
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of fire detection devices, receiving a response signal to the call signal,
Based on the reception status of the response signal to the call signal, the failure status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined failure status or reaches a failure status. determine whether it is in a failure predictor state that is recognized as a predictor;
Determining a monitoring failure sign or a monitoring failure in the corresponding monitoring area based on transitions in combinations of failure portent states and failure states of each of a plurality of fire detection devices that redundantly monitor the same monitoring area. Characterized by

(防災システム3)
本発明は、受信装置に複数の火災検知装置を接続した防災システムであって、
火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災の有無を判定した場合に、受信装置からの呼出信号に対する応答信号に火災検出情報を設定して受信装置へ送信する火災判定部と、
受光部に対応する透光性窓の汚損レベルを検出して、汚損レベルに基づき汚損状況に関する信号を受信装置へ送信する汚損処理部と、
を備え、
受信装置は、
複数の火災検知装置を順次指定した呼出信号を繰り返し送信して、呼出信号に対する応答信号を受信し、
呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の火災検知装置の汚損状況が所定の汚損状態であるか、汚損状況に至る予兆と認められる汚損予兆状態であるかを判定し、
相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々の汚損予兆状態及び汚損状態の組み合わせに基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 3)
The present invention is a disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
Fire detection equipment
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
a fire determination unit that sets fire detection information in a response signal to a call signal from a receiving device and transmits the response signal to the receiving device when the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving device; ,
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of fire detection devices, receiving a response signal to the call signal,
Based on the reception status of the response signal to the call signal, the contamination status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined contamination status or reaches a contamination status. Determining whether it is a contamination sign state that is recognized as a sign,
Determining a monitoring failure sign or monitoring failure in the corresponding monitoring area based on a combination of the defacement portent state and the defacement state of each of a plurality of fire detection devices that redundantly monitor the same monitoring area. do.

(防災システム4)
本発明は、受信装置に複数の火災検知装置を接続した防災システムであって、
火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災の有無を判定した場合に、受信装置からの呼出信号に対する応答信号に火災検出情報を設定して受信装置へ送信する火災判定部と、
受光部に対応する透光性窓の汚損レベルを検出して、汚損レベルに基づき汚損状況に関する信号を受信装置へ送信する汚損処理部と、
を備え、
受信装置は、
複数の火災検知装置を順次指定した呼出信号を繰り返し送信して、呼出信号に対する応答信号を受信し、
呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の火災検知装置の汚損状況が所定の汚損状態であるか、汚損状況に至る予兆と認められる汚損予兆状態であるかを判定し、
相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々の汚損予兆状態及び汚損状態の組み合わせの推移に基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 4)
The present invention is a disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
Fire detection equipment
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
a fire determination unit that sets fire detection information in a response signal to a call signal from a receiving device and transmits the response signal to the receiving device when the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving device; ,
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of fire detection devices, receiving a response signal to the call signal,
Based on the reception status of the response signal to the call signal, the contamination status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined contamination status or reaches a contamination status. Determining whether it is a contamination sign state that is recognized as a sign,
Determining a monitoring failure sign or monitoring failure in the corresponding monitoring area based on the transition of the combination of the contamination sign state and the contamination state of each of the plurality of fire detection devices that monitor the same monitoring area redundantly. Characterized by

(防災システムの効果)
本発明は、受信装置に監視エリアからの放射線を、透光性窓を介して受光することで監視エリアの火災を監視する複数の検知装置を接続した防災システムに於いて、受信装置は、監視エリアを監視している任意の検知装置の透光性窓の汚損状況と、同じ監視エリアを監視している他の検知装置の透光性窓の汚損状況とに基づいて監視障害の状況を判定して、判定結果に対応する処理(判定結果を報知する処理)をするようにしたため、正常(非汚損)、汚損予兆、汚損といった透光性窓の汚損の状況に応じて、システム上の監視性能上の障害状況(監視障害予兆、監視障害)を適切に評価して報知することを可能とする。
(Effect of disaster prevention system)
The present invention relates to a disaster prevention system in which a plurality of detection devices are connected to a receiving device for monitoring fires in a monitored area by receiving radiation from the monitored area through a translucent window. Determining the status of monitoring failure based on the contamination status of the translucent windows of any detector monitoring the area and the contamination status of the translucent windows of other detectors monitoring the same monitoring area. Then, the processing corresponding to the judgment result (processing to notify the judgment result) is performed, so the system can monitor the situation according to the contamination status of the translucent window, such as normal (no contamination), signs of contamination, and contamination. It is possible to appropriately evaluate and notify performance failure conditions (prediction of monitoring failure, monitoring failure).

(防災システムの他の形態による効果)
本発明の別の形態にあっては、受信装置に複数の火災検知装置を接続した防災システムに於いて、火災検知装置は、透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、受光部からの電気信号に基づいて、対応する監視エリアにおける火災の有無を判定する火災判定部と、受光部に対応する透光性窓の汚損レベルを検出して、汚損レベルから、透光性窓が所定の汚損予兆状態であると認められる場合に、受信装置に汚損予兆信号を送信し、汚損レベルから、透光性窓が汚損予兆状態よりも汚損が進んだ所定の汚損状態であると認められる場合に、受信装置へ受光部の汚損を示す汚損信号を送信する汚損処理部と、を備え、受信装置は、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の火災検知装置の汚損予兆状態発生有無の関係に基づいて、対応する監視エリアの監視障害予兆と判定して、判定結果に対応する処理をする制御部を備えたため、同一の監視エリアを重複して監視している複数の火災検知装置の汚損予兆が例えば所定の全部数に対し所定割合未満の場合は、汚損予兆に達していない火災検知装置による監視エリア全部の監視が保証されていることから、受信装置は対応する監視エリアの監視障害予兆として報知せず、監視エリアに対する不必要な監視障害予兆の報知による対応を不要にして本来の監視業務の円滑な遂行を可能とする。
(Effects of Other Forms of Disaster Prevention System)
According to another aspect of the present invention, in a disaster prevention system in which a plurality of fire detection devices are connected to a receiver, the fire detection devices receive radiation from a monitored area through a translucent window to generate electricity. A light receiving unit that converts the light into a signal, a fire determination unit that determines whether there is a fire in the corresponding monitoring area based on the electrical signal from the light receiving unit, and a stain level of the translucent window corresponding to the light receiving unit. , when it is recognized that the translucent window is in a predetermined contamination predictive state from the contamination level, the contamination predictive signal is transmitted to the receiving device, and the contamination level indicates that the translucent window is more contamination than the contamination predictive state. a pollution processing unit that transmits a pollution signal indicating the pollution of the light receiving unit to the receiving device when a predetermined pollution state is recognized, and the receiving devices are arranged adjacent to each other and monitor the same. Based on the presence/absence of the contamination sign state occurrence of a plurality of fire detection devices that monitor the area redundantly, it is determined that there is a sign of monitoring failure in the corresponding monitoring area, and the controller is provided to perform processing corresponding to the judgment result. , if the sign of contamination of a plurality of fire detection devices that are redundantly monitoring the same monitoring area is, for example, less than a predetermined ratio with respect to the predetermined total number, all of the areas monitored by the fire detection devices that have not reached the sign of contamination Since the monitoring is guaranteed, the receiving device does not notify the corresponding monitoring area as a monitoring failure sign, and it is unnecessary to respond by notifying the monitoring failure prediction that is unnecessary for the monitoring area, and the original monitoring work can be performed smoothly. enable

また、同一の監視エリアを重複して監視している複数の火災検知装置の汚損予兆が例えば所定の全部数に対し所定割合に達した場合には、複数の火災検知装置による監視エリア全部の監視が保証されなくなることから、この場合には、受信装置は対応する監視エリアの監視障害予兆を報知して注意を促し、その後、同一監視エリアを監視する複数の火災検知装置の少なくとも何れかから汚損信号を受信した場合に、同一監視エリアに対する複数の火災検知装置による重複監視の機能が失われたと判断し、監視障害を報知することで、汚損に達した火災検知装置に対する清掃作業を準備して実行することで、適切な対応を可能とする。 Further, when the signs of contamination of a plurality of fire detection devices redundantly monitoring the same monitoring area reach, for example, a predetermined ratio with respect to a predetermined total number, monitoring of the entire monitoring area by the plurality of fire detection devices is not guaranteed, in this case, the receiving device will notify the monitoring failure sign of the corresponding monitoring area to call attention, and then at least one of the plurality of fire detection devices monitoring the same monitoring area will detect contamination. When a signal is received, it is determined that the redundant monitoring function of multiple fire detection devices for the same monitoring area has been lost, and by announcing the monitoring failure, preparations are made to clean up the defaced fire detection devices. By doing so, you will be able to take appropriate action.

(汚損予兆×汚損予兆=監視障害予兆による効果)
また、受信装置の制御部は、汚損予兆信号及び汚損信号に基づき、相互に同一の監視エリアを重複して監視する火災検知装置の全てが汚損予兆状態となった場合に、対応する監視エリアの監視障害予兆を判定して、判定結果に対応する処理をするようにしたため、トンネル長手方向等に向かって所定間隔に区分された監視エリアを重複して監視する隣接した火災検知装置の何れか一方が汚損予兆となった場合は、汚損予兆に達していない他方の火災検知装置により監視エリア全部の監視が保証されていることから、受信装置は対応する監視エリアの監視障害予兆として報知せず、監視エリアに対する不必要な監視障害予兆の報知による対応を不要にして本来の監視業務の円滑な遂行を可能とする。
(Sign of contamination x Sign of contamination = Effect of monitoring failure sign)
Further, the control unit of the receiving device, based on the contamination sign signal and the contamination signal, when all of the fire detection devices that monitor the same monitoring area in duplicate are in the contamination sign state, the corresponding monitoring area Since a sign of monitoring failure is determined and a process corresponding to the determination result is performed, either one of the adjacent fire detection devices that monitors the monitoring areas divided at predetermined intervals in the longitudinal direction of the tunnel or the like overlaps. becomes a sign of contamination, the other fire detection device that has not reached the sign of contamination guarantees monitoring of the entire monitored area, so the receiving device does not report as a sign of failure to monitor the corresponding monitoring area. To enable the smooth execution of original monitoring work by eliminating the need to respond by notifying an unnecessary monitoring failure sign to a monitoring area.

また、両方の火災検知装置による監視エリア全部の重複した監視が保証されなくなり、汚損障害となる可能性が高いことから、この場合には、受信装置は対応する監視エリアの監視障害予兆を報知して注意を促す。 In addition, redundant monitoring of the entire monitored area by both fire detection devices is no longer guaranteed, and there is a high possibility of contamination failure. be careful.

(汚損×正常/汚損予兆/予兆=監視障害による効果)
また、受信装置の制御部は、相互に同一の監視エリアを重複して監視する火災検知装置の内の少なくとも一部が汚損状態となった場合に、対応する監視エリアの監視障害と判定して、判定結果に対応する処理をするようにしたため、例えば、同一の監視エリアを重複して監視している火災検知装置の両方が汚損予兆に達して監視障害予兆が報知された後に、何れか一方の火災検知装置が汚損に達した場合に、同一監視エリアに対する隣接した火災検知装置による重複監視の機能が失われたと判断して監視障害を報知することで、汚損に達した火災検知装置に対する清掃作業を準備して実行する適切な対応を可能とする。
(Contamination × Normal/Contamination sign/Prediction = Effect of monitoring failure)
In addition, when at least some of the fire detection devices that monitor the same monitoring area redundantly become contaminated, the control unit of the receiving device determines that there is a monitoring failure in the corresponding monitoring area. For example, after both fire detection devices monitoring the same monitoring area in duplicate have reached a sign of contamination and a sign of monitoring failure has been reported, one of them When one of the fire detection devices reaches contamination, it is determined that the redundant monitoring function of the adjacent fire detection device for the same monitoring area has been lost, and the monitoring failure is notified, thereby cleaning the contamination of the fire detection device. Enable appropriate response to prepare and execute work.

(汚損予兆×汚損=監視障害予兆による効果)
また、受信装置の制御部は、相互に同一の監視エリアを重複して監視する火災検知装置の内の一部が汚損予兆状態で他が汚損状態となった場合に、対応する監視エリアの監視障害予兆と判定して、判定結果に対応する処理をするようにしたため、一方が汚損予兆で他方が汚損となることで監視エリアは重複監視できないが、汚損予兆の火災検知装置は監視エリア全部を監視し、また、汚損予兆の火災検知装置は監視エリアの一部を重複して監視しており、このため、ただちに監視障害とせず、この段階では監視障害予兆と評価し、監視エリアの監視障害予兆を報知して注意を促すようにしても良い。
(Prediction of contamination x contamination = effect of prediction of monitoring failure)
In addition, when some of the fire detection devices that monitor the same monitoring area overlap each other and others are in a state of contamination, the control unit of the receiving device monitors the corresponding monitoring area. Since it is judged as a sign of failure and the processing corresponding to the judgment result is performed, redundant monitoring of the monitoring area is not possible because one is a sign of contamination and the other is contamination. In addition, the fire detection device for signs of contamination monitors a part of the monitored area redundantly. You may make it alert|report a sign and call attention.

(汚損予兆状態と汚損状態による効果)
また、汚損予兆状態は、当該状態における受光部により監視エリアの全部の監視を可能である汚損レベル範囲として設定され、汚損状態は、当該状態における受光部により監視エリアの一部または全部の監視が不能である汚損レベル範囲として設定されるため、同一監視エリアを重複して監視している複数の火災検知装置の一部が汚損予兆に達しても監視予兆警報を行わず、同一監視エリアを重複して監視している複数の火災検知装置の例えば全てが汚損予兆となったときに、監視エリアの監視障害予兆を報知させ、その後、同一監視エリアを重複して監視している複数の火災検知装置の一部で汚損に達した場合に、監視エリアの監視障害を報知することを可能とする。
(Effects of contamination sign state and contamination state)
Further, the contamination sign state is set as a contamination level range in which the light receiving unit in that state can monitor the entire monitoring area. Since it is set as a contamination level range that is impossible, even if some of the multiple fire detection devices that are redundantly monitoring the same monitoring area reach a contamination sign, a monitoring sign alarm will not be issued, and the same monitoring area will be overlapped. When, for example, all of a plurality of fire detection devices that are monitored by monitoring become a sign of contamination, a sign of monitoring failure in the monitored area is notified, and then a plurality of fire detections that are redundantly monitoring the same monitored area. To notify a monitoring failure of a monitoring area when a part of a device is contaminated.

トンネル内の火災監視を例にとって本発明による防災システムの概要を示した説明図Explanatory drawing showing an overview of the disaster prevention system according to the present invention, taking fire monitoring in a tunnel as an example. 火災検知装置により重複監視するトンネル内の監視エリアを示した説明図Explanatory drawing showing a monitoring area in a tunnel that is redundantly monitored by a fire detection device 火災検出装置の機能構成の概略を示したブロック図Block diagram showing an outline of the functional configuration of the fire detection device 火災検出装置の外観を示した説明図Explanatory diagram showing the appearance of the fire detection device 防災受信盤の機能構成の概略を示したブロック図Block diagram showing the outline of the functional configuration of the disaster prevention receiver 防災受信盤に設定された監視障害予兆と監視障害の判定条件を一覧で示した説明図An explanatory diagram showing a list of monitoring failure signs and monitoring failure judgment conditions set on the disaster prevention receiver panel 防災受信盤による監視制御を示したフローチャートFlowchart showing monitoring control by disaster prevention receiver

[防災システムの概要]
図1はトンネルの火災監視を例にとって本発明による防災システムの概要を示した説明図である。図1に示すように、自動車専用道路のトンネルとして、上り線トンネル1aと下り線トンネル1bが構築されている。
[Outline of disaster prevention system]
FIG. 1 is an explanatory diagram showing an outline of a disaster prevention system according to the present invention, taking fire monitoring in a tunnel as an example. As shown in FIG. 1, an up-line tunnel 1a and a down-line tunnel 1b are constructed as tunnels of a motorway.

上り線トンネル1aと下り線トンネル1bの内部には、トンネル長手方向の壁面に沿って例えば50メートル間隔で火災検知装置16が設置されている。火災検知装置16は2組の検出部を備えることで、トンネル長手方向上り側および下り側の両方向に監視エリアを持ち、トンネルの長手方向に沿って、隣接して配置される火災検知装置との監視エリアが重複するように連続的に配置される。 Inside the up line tunnel 1a and the down line tunnel 1b, fire detection devices 16 are installed at intervals of, for example, 50 meters along the walls in the longitudinal direction of the tunnels. The fire detection device 16 is provided with two sets of detection units so that it has monitoring areas on both the upward and downward sides in the longitudinal direction of the tunnel, and the fire detection devices arranged adjacent to each other along the longitudinal direction of the tunnel. The monitoring areas are arranged consecutively so that they overlap.

受信装置として機能する防災受信盤10からは上り線トンネル1aと下り線トンネル1bに対し電源および伝送回線12a,12bが引き出されて火災検知装置16が接続されており、火災検知装置16には固有のアドレスが所定の並び方向の順に予め設定されている。 A power source and transmission lines 12a and 12b are led out from the disaster prevention receiving panel 10 functioning as a receiving device to the up line tunnel 1a and the down line tunnel 1b, and a fire detection device 16 is connected. are set in advance in order of a predetermined alignment direction.

図2は火災検知装置により重複監視するトンネル内の監視エリアを示した説明図であり、図1の上り線トンネル1aを例にとっている。 FIG. 2 is an explanatory diagram showing a monitoring area in a tunnel that is redundantly monitored by the fire detection device, taking the upstream tunnel 1a of FIG. 1 as an example.

図2に示すように、上り線トンネル1aのトンネル側壁に沿って例えば50メートル間隔で火災検知装置16が設置されている。これはトンネル内を長手方向に50メートル間隔の監視エリアA1,A2,…Ai-1,Ai,Ai+1,・・・に区分けし、境界に火災検知装置16を設置する。各監視エリアは例えば長手方向50m×短手方向20mといった大きさになる。 As shown in FIG. 2, fire detection devices 16 are installed at intervals of, for example, 50 meters along the side wall of the inbound tunnel 1a. This divides the inside of the tunnel longitudinally into monitoring areas A 1 , A 2 , . . . A i−1 , A i , A i+1 , . . Each monitoring area has a size of, for example, 50 m in the longitudinal direction×20 m in the lateral direction.

火災検知装置16には、左右両側の監視エリアを個別に監視する2組の検出部が設けられている。便宜的に、火災検知装置に向かって右側を右眼検出部、左側を左眼検出部とする。例えば、監視エリアAiの両端に配置されたi番目の火災検知装置16とi+1番目の火災検知装置16は、i番目の火災検知装置16の右眼検出部により監視エリアAiを監視し、同時に、i+1番目の火災検知装置16の左眼受光部により同じ監視エリアAiを重複して監視している。 The fire detection device 16 is provided with two sets of detection units for individually monitoring the left and right monitoring areas. For the sake of convenience, the right eye detection unit is on the right side of the fire detection device, and the left eye detection unit is on the left side. For example, the i-th fire detection device 16 and the i+1-th fire detection device 16 arranged at both ends of the monitoring area Ai monitor the monitoring area Ai by the right eye detection unit of the i-th fire detection device 16, and at the same time: The same monitoring area Ai is redundantly monitored by the left eye light receiving section of the i+1-th fire detection device 16 .

なお、トンネル入口側の最初の監視エリアA1は、1番目の火災検知装置16の左眼検出部による単独監視となる。 The first monitoring area A1 on the tunnel entrance side is monitored solely by the left eye detection unit of the first fire detection device 16 .

火災検知装置16は、監視エリア内で起きた火災による炎からの放射線、例えば赤外線を観測して火災を監視しており、火災を検出した場合、例えば予め設定された固有のアドレスを含む火災信号を防災受信盤10に送信する。 The fire detection device 16 monitors the fire by observing radiation, for example infrared rays, from the flames caused by the fire in the monitoring area. is transmitted to the disaster prevention receiving board 10.

また、火災検知装置16は右眼および左眼検出部に設けられた透光性窓の汚損を監視しており、汚損レベルが所定の汚損予兆閾値に達した場合に、汚損予兆信号を防災受信盤10に送信し、汚損レベルが所定の汚損閾値に達した場合に、汚損信号を防災受信盤10に送信する。 Further, the fire detection device 16 monitors contamination of translucent windows provided in the right eye and left eye detection units, and receives a contamination warning signal for disaster prevention when the contamination level reaches a predetermined contamination warning threshold. When the pollution level reaches a predetermined pollution threshold, a pollution signal is transmitted to the disaster prevention receiver board 10 .

[火災検知装置]
図3は火災検知装置の機能構成の概略を示したブロック図、図4は火災検知装置の外観を示した説明図である。
[Fire detection device]
FIG. 3 is a block diagram showing an outline of the functional configuration of the fire detection device, and FIG. 4 is an explanatory diagram showing the appearance of the fire detection device.

図3に示すように、火災検知装置16は2組の火災検出部16a,16bを備えており、それぞれ右眼検出部、左眼検出部に対応する。火災検出部16aに代表して示すように、受光センサを含む受光部38a,38b、これら各々に対応する増幅処理部40a,40b、制御部32及び伝送部34を備える。受光部38a,38bの前方には検出器カバー(図4の筐体52)に設けた透光性窓36を配置しており、透光性窓36を介して外部の監視エリアからの光エネルギーを受光部38a,38bに入射している。 As shown in FIG. 3, the fire detection device 16 includes two sets of fire detection units 16a and 16b, which correspond to the right eye detection unit and left eye detection unit, respectively. As represented by the fire detection section 16a, it includes light receiving sections 38a and 38b including light receiving sensors, amplification processing sections 40a and 40b corresponding to these, control section 32, and transmission section 34, respectively. A translucent window 36 provided in the detector cover (housing 52 in FIG. 4) is arranged in front of the light receiving sections 38a and 38b, and optical energy from the external monitoring area is received through the translucent window 36. are incident on the light receiving portions 38a and 38b.

また、透光性窓36の汚損を監視するため、試験光源部42、試験光源用透光窓56、汚損受光部44及び増幅部46で構成する汚損検知部45が設けられている。 In order to monitor contamination of the translucent window 36, a contamination detection section 45 comprising a test light source section 42, a test light source transmission window 56, a contamination light receiving section 44, and an amplifier section 46 is provided.

ここで、図4に示すように、火災検知装置16は、筐体52の上部に設けられたセンサ収納部54に2組の透光性窓36が設けられ、透光性窓36内の各々に、図3に示した火災検出部16a,16bの受光部が配置されている。また、透光性窓36の近傍の、受光部を見通せる位置に、個別の試験光源部42を収納した2組の試験光源用透光窓56が設けられている。 Here, as shown in FIG. 4, the fire detection device 16 is provided with two pairs of translucent windows 36 in a sensor housing portion 54 provided in the upper part of the housing 52, and each of the translucent windows 36 , the light receiving portions of the fire detecting portions 16a and 16b shown in FIG. 3 are arranged. Also, two sets of test light source transmissive windows 56 containing individual test light source units 42 are provided near the translucent window 36 at positions where the light receiving units can be seen through.

再び図3を参照するに、火災検出部16bも火災検出部16aと同じ構成であるが、制御部32は両者に共通するユニットとして設けられ、例えばハードウェアとしてCPU、メモリ、各種の入出力ポート等を備えたコンピュータ回路等が使用される。また、制御部32にはプログラムの実行により実現される機能として、火災判定部48と汚損処理部50が設けられる。 Referring to FIG. 3 again, the fire detection section 16b has the same configuration as the fire detection section 16a, but the control section 32 is provided as a unit common to both. A computer circuit or the like is used. Further, the control unit 32 is provided with a fire determination unit 48 and a contamination processing unit 50 as functions realized by executing a program.

火災検出部16aは例えば2波長式の炎検知原理により火災を監視している。受光部38aは、透光性窓36を介して入射した光エネルギーの中から、炎に特有なCO2の共鳴放射帯である波長4.4~4.5μmの放射線を光学波長バンドパスフィルタにより選択透過させて、受光センサにより該放射線のエネルギーを受光して光電変換したうえで、増幅処理部40aにより増幅等所定の加工を施して受光エネルギー量に対応する受光信号にして制御部32へ出力する。 The fire detection unit 16a monitors fire by, for example, a two-wavelength flame detection principle. The light-receiving part 38a receives radiation of wavelength 4.4 to 4.5 μm, which is the resonance radiation band of CO 2 peculiar to flames, from the light energy incident through the translucent window 36 and uses an optical wavelength bandpass filter. It is selectively transmitted, the energy of the radiation is received by the light receiving sensor, photoelectrically converted, and then subjected to predetermined processing such as amplification by the amplification processing unit 40 a to generate a received light signal corresponding to the amount of received energy and output to the control unit 32 . do.

受光部38bは、透光性窓36を介して入射した光エネルギーの中から、波長5~6μmの放射エネルギーを光学波長バンドパスフィルタにより選択透過させて、受光センサにより該放射線のエネルギーを受光して光電変換したうえで、増幅処理部40bにより増幅等所定の加工を施して受光エネルギー量に対応する受光信号にして制御部32へ出力する。 The light-receiving part 38b selectively transmits radiant energy with a wavelength of 5 to 6 μm from the light energy incident through the translucent window 36 by an optical wavelength bandpass filter, and receives the energy of the radiation by a light-receiving sensor. Then, the signal is subjected to predetermined processing such as amplification by the amplification processing unit 40b, and is output to the control unit 32 as a light reception signal corresponding to the amount of light reception energy.

制御部32に設けられた火災判定部48は、例えば、増幅処理部40a,40bから出力された受光信号レベルの相対比をとり、所定の閾値と比較することにより炎の有無を判定し、炎有りと判定した場合には、伝送部34に指示して、防災受信盤10からの自己アドレスに一致する呼出電文に対する応答電文に火災検出情報を設定して防災受信盤10へ送信する制御を行う。 A fire determination unit 48 provided in the control unit 32 determines the presence or absence of a flame by, for example, taking the relative ratio of the received light signal levels output from the amplification processing units 40a and 40b and comparing it with a predetermined threshold value. If it is determined to be present, the transmission unit 34 is instructed to set fire detection information in a response message to the call message matching the own address from the disaster prevention receiver 10, and control is performed for transmission to the disaster prevention receiver 10. .

試験光源部42、汚損受光部44及び増幅部46で構成した汚損検知部45は、制御部32の汚損処理部50からの指示により所定周期、例えば1日に1回の周期で試験光源部42を点滅して所定の試験光を発し、透光性窓36を介して汚損受光部44に入射しており、この試験光は汚損受光部44に設けた受光センサで電気信号に変換され、増幅部46で増幅して制御部32に、透光性窓36の汚損度に応じた汚損検出信号が出力される。上記所定周期の制御は火災検出装置内部でおこなっても良いし、防災受信盤10側で制御して電文による実施指示を受けて実施するものであっても良い。 A contamination detector 45 composed of a test light source 42, a contamination light receiver 44, and an amplifier 46 detects the test light source 42 at predetermined intervals, for example, once a day, according to instructions from the contamination processor 50 of the control unit 32. blinks to emit a predetermined test light, which is incident on the contamination light receiving section 44 through the translucent window 36. This test light is converted into an electric signal by a light receiving sensor provided in the contamination light receiving section 44, and amplified. After being amplified by the unit 46 , a contamination detection signal corresponding to the degree of contamination of the translucent window 36 is output to the control unit 32 . The control of the predetermined period may be performed inside the fire detection device, or may be controlled by the disaster prevention receiving panel 10 side, and may be performed upon receipt of an execution instruction by telegram.

制御部32の汚損処理部50は、増幅部46からの汚損検出信号に基づく汚損レベルが所定の汚損予兆閾値を超えた場合に、伝送部34を介して、防災受信盤10からの自己アドレスに一致する呼出電文に対する応答電文に汚損予兆情報を設定して防災受信盤10へ送信する制御を行う。 When the contamination level based on the contamination detection signal from the amplification unit 46 exceeds a predetermined contamination sign threshold value, the contamination processing unit 50 of the control unit 32 receives the self-address from the disaster prevention receiver 10 via the transmission unit 34. Control is performed to set the contamination predictor information in the response telegram to the matching call telegram and transmit it to the disaster prevention receiving panel 10 .

また、制御部32の汚損処理部50は、増幅部46からの汚損検出信号に基づく汚損レベルが、汚損予兆閾値より高い所定の汚損閾値を超えた場合に、伝送部34を介して、防災受信盤10からの自己アドレスに一致する呼出電文に対する応答電文に汚損情報を設定して防災受信盤10へ送信する制御を行う。 Further, when the pollution level based on the pollution detection signal from the amplifier 46 exceeds a predetermined pollution threshold higher than the pollution sign threshold, the pollution processing section 50 of the control section 32 performs disaster prevention reception via the transmission section 34. Control is performed to set contamination information in a response telegram to a call telegram from the panel 10 that matches its own address and transmit it to the disaster prevention receiving panel 10 .

ここで、制御部32の汚損処理部50は、増幅部46からの汚損検出信号に基づき汚損
度合を示す透光性窓36の減光率を求め、この減光率を汚損レベルとして汚損予兆及び汚損の判定処理を行う。汚損処理部50による透光性窓36の減光率の算出は、透光性窓36に汚損がない火災監視開始時又は透光性窓36の清掃終了時の汚損検出信号のレベルを基準レベルErとして予め記憶し、増幅部46から検出レベルEの汚損検出信号が得られる毎に、減光率Dを
D=1-(E/Er)
として算出する。
Here, the contamination processing unit 50 of the control unit 32 obtains the light attenuation rate of the translucent window 36 indicating the degree of contamination based on the contamination detection signal from the amplification unit 46, and uses this light reduction rate as the contamination level. Decontamination processing is performed. Calculation of the light attenuation rate of the translucent window 36 by the contamination processing unit 50 is based on the level of the contamination detection signal at the start of fire monitoring when the translucent window 36 is not soiled or when the cleaning of the translucent window 36 is completed. Er is stored in advance, and every time a contamination detection signal of detection level E is obtained from the amplification unit 46, the light attenuation rate D is set to D=1-(E/Er).
Calculate as

このようにして算出される減光率Dは、透光性窓36の汚損度合の増加に比例して増加する値であり、以下の説明では、減光率を汚損レベルとして説明する。 The light attenuation rate D calculated in this way is a value that increases in proportion to the degree of contamination of the translucent window 36, and in the following description, the light attenuation rate will be described as the contamination level.

また、汚損処理部50で汚損予兆の判定に使用する汚損予兆閾値は、透光性窓36が汚れているものの、受光部38a,38bによる監視エリアの全部の監視が引き続き可能である所定の第1の汚損レベル、例えば減光率75パーセントに設定される。 Further, the defacement sign threshold used in defacement sign determination in the defacement processing unit 50 is a predetermined threshold value that allows continuous monitoring of the entire monitoring area by the light receiving units 38a and 38b even though the translucent window 36 is dirty. A pollution level of 1 is set, for example, 75 percent attenuation.

更に、汚損処理部50で汚損の判定に使用する汚損閾値は、受光部による監視エリアの一部または全部が監視できなくなる所定の第2の汚損レベル、例えば減光率85パーセントに設定される。 Further, the defacement threshold used for defacement determination by the defacement processor 50 is set to a predetermined second defacement level, such as a light reduction rate of 85%, at which part or all of the monitored area cannot be monitored by the light receiver.

[防災受信盤]
図5は防災受信盤の機能構成の概略を示したブロック図である。図5に示すように、防災受信盤10は制御部18を備え、制御部18は例えばプログラムの実行により実現される機能であり、ハードウェアとしてはCPU、メモリ、各種の入出力ポート等を備えたコンピュータ回路等を使用する。
[Disaster prevention receiver]
FIG. 5 is a block diagram showing an outline of the functional configuration of the disaster prevention receiving panel. As shown in FIG. 5, the disaster prevention receiving board 10 includes a control unit 18. The control unit 18 is a function realized by, for example, executing a program. A computer circuit or the like is used.

制御部18に対しては伝送部20a,20bが設けられ、伝送部20a,20bから引き出された伝送回線12a,12bに上り線トンネル1aと下り線トンネル1bに設置された火災検知装置16をそれぞれ複数台接続している。 Transmission units 20a and 20b are provided for the control unit 18, and the transmission lines 12a and 12b drawn from the transmission units 20a and 20b are connected to the fire detection devices 16 installed in the up line tunnel 1a and the down line tunnel 1b, respectively. Multiple units are connected.

また、制御部18に対しスピーカ、警報表示灯等を備えた警報部22、液晶ディスプレイ、プリンタ等を備えた表示部24、各種スイッチ等を備えた操作部26、外部監視設備と通信するIG子局設備を接続するモデム28が設けられ、更に、換気設備、警報表示板設備、ラジオ再放送設備、カメラ監視設備、照明設備及び消火ポンプ設備等を接続したIO部30が設けられている。 In addition, for the control unit 18, an alarm unit 22 equipped with a speaker, an alarm indicator lamp, etc., a display unit 24 equipped with a liquid crystal display, a printer, etc., an operation unit 26 equipped with various switches, etc., an IG element for communicating with external monitoring equipment A modem 28 is provided for connecting station equipment, and an IO section 30 is provided for connecting ventilation equipment, alarm display equipment, radio rebroadcast equipment, camera monitoring equipment, lighting equipment, fire pump equipment, and the like.

防災受信盤10の制御部18は、伝送部20a,20bに指示して火災検知装置16のアドレスを順次指定したポーリングコマンドを含む呼出電文を繰り返し送信しており、火災検知装置16は自己アドレスに一致する呼出電文を受信すると、火災、汚損予兆、汚損等の情報を含む自己の検出状態を示す応答電文を返信する。 The control unit 18 of the disaster prevention receiving panel 10 instructs the transmission units 20a and 20b to repeatedly transmit a calling telegram containing a polling command sequentially specifying the address of the fire detection device 16, and the fire detection device 16 responds to its own address. When receiving a matching calling telegram, it returns a response telegram indicating its own detection state including information such as fire, signs of contamination, and contamination.

防災受信盤10の制御部18は、火災検知装置16からの応答電文の受信により火災を検出した場合は警報部22に指示して火災警報を出力させると共にIO部30に指示して他設備に連動制御を行なわせる。 When a fire is detected by receiving a response telegram from the fire detection device 16, the control unit 18 of the disaster prevention receiving board 10 instructs the alarm unit 22 to output a fire alarm and instructs the IO unit 30 to output to other equipment. Perform interlocking control.

[防災受信盤による監視障害予兆と監視障害の報知]
防災受信盤10の制御部18は、火災検知装置16から受信した応答電文に設定された汚損予兆情報と汚損情報に基づき、隣接する火災検知装置16により重複して監視している監視エリアの監視障害予兆と監視障害を判断して報知する機能を備える。以下の説明では、汚損予兆情報が設定された応答電文を汚損予兆信号といい、汚損情報が設定された応答電文を汚損信号という。
[Prediction of monitoring failure and notification of monitoring failure by disaster prevention receiver]
The control unit 18 of the disaster prevention receiver 10 monitors the monitoring area redundantly monitored by the adjacent fire detection device 16 based on the contamination sign information and the contamination information set in the response message received from the fire detection device 16. Equipped with a function to judge and report failure signs and monitoring failures. In the following description, a response message in which corruption predictor information is set is called a corruption predictor signal, and a response message in which corruption information is set is called a corruption signal.

(監視障害予兆の報知)
防災受信盤10の制御部18は、火災検知装置16から受信した汚損予兆信号に基づき、任意の同一監視エリアを監視する複数の火災検知装置16の全部数に対し、汚損予兆にあるものの数が、所定の割合として設定された所定の閾値に達した場合に、対応する監視エリアの監視障害予兆を報知する。
(Notification of monitoring failure sign)
Based on the contamination sign signal received from the fire detection device 16, the control unit 18 of the disaster prevention receiving panel 10 determines the number of contamination signs with respect to the total number of the plurality of fire detection devices 16 monitoring the same arbitrary monitoring area. , when a predetermined threshold value set as a predetermined ratio is reached, a monitoring failure sign of the corresponding monitoring area is notified.

本実施形態では、図2に示したように、同一監視エリアを隣接した火災検知装置16で重複して監視していることから、同一監視エリアを監視する複数の火災検知装置16の全部数は2であり、制御部18は、汚損予兆状態にある火災検知装置16の数が、所定の割合として設定された所定の閾値を超えた場合、例えば所定の閾値として設定された50パーセントを超えて2台の火災検知装置16が汚損予兆となった場合、対応する監視エリアの監視障害予兆を報知させる。 In this embodiment, as shown in FIG. 2, since the same monitoring area is redundantly monitored by adjacent fire detection devices 16, the total number of the plurality of fire detection devices 16 monitoring the same monitoring area is 2, and the control unit 18, when the number of fire detection devices 16 in the contamination sign state exceeds a predetermined threshold set as a predetermined ratio, for example, exceeds 50% set as a predetermined threshold When the two fire detection devices 16 become a sign of contamination, a sign of monitoring failure of the corresponding monitoring area is notified.

例えば図2の監視エリアAiを例にとると、監視エリアAiに隣接して配置されたi番目とi+1番目の2台の火災検知装置16について、何れか一方が汚損予兆となっても、他方の火災検知装置16が汚損予兆状態に至っていないことから、この段階で制御部18は、監視障害予兆の報知は行わない。 For example, taking the monitoring area Ai in FIG. 2 as an example, for the i-th and i+1-th two fire detection devices 16 arranged adjacent to the monitoring area Ai, even if one of them becomes a sign of contamination, the other Since the fire detection device 16 has not reached the contamination sign state, the control unit 18 does not report the monitoring failure sign at this stage.

これに対し監視エリアAiに隣接して配置されたi番目とi+1番目の2台の火災検知装置16の両方が汚損予兆状態となった場合には、監視エリアAiの全域を監視するという本来の機能が間もなく損なわれる可能性があることから、制御部18は監視エリアAiについて監視障害予兆を報知することになる。 On the other hand, when both the i-th and i+1-th fire detection devices 16 arranged adjacent to the monitoring area Ai are in the contamination sign state, the entire monitoring area Ai is monitored. Since there is a possibility that the function will be impaired soon, the control unit 18 will report a monitoring failure sign for the monitoring area Ai.

制御部18による監視障害予兆の報知は、警報部22に指示して監視障害予兆を示す音声メッセージや警報音等を出力させると共に、表示部24に指示して液晶ディスプレイに、監視エリアに対応して監視障害予兆が発生したことを表示させる。 The control unit 18 notifies the monitoring failure sign by instructing the alarm unit 22 to output a voice message, alarm sound, etc. indicating the monitoring failure sign, and instructing the display unit 24 to display the liquid crystal display corresponding to the monitoring area. to display that a monitoring failure sign has occurred.

(監視障害の報知)
防災受信盤10の制御部18は、火災検知装置16から汚損信号を受信した場合は、状況に応じ、対応する監視エリアの監視障害を報知する。
(Notification of monitoring failure)
When the control unit 18 of the disaster prevention receiving panel 10 receives the contamination signal from the fire detection device 16, it notifies the monitoring failure of the corresponding monitoring area depending on the situation.

本実施形態では、図2に示したように、同一監視エリアを隣接した火災検知装置16で重複して監視しており、汚損に先立ち隣接した火災検知装置16の両方が汚損予兆となることで防災受信盤10の制御部18は監視障害予兆を報知しており、その後、監視障害予兆が報知されている監視エリアに隣接した火災検知装置16の少なくとも何れか一方から汚損信号を受信した場合に、その監視エリアに対応した監視障害を報知することになる。 In this embodiment, as shown in FIG. 2, the same monitoring area is redundantly monitored by adjacent fire detection devices 16, and both adjacent fire detection devices 16 become a sign of contamination prior to contamination. When the control unit 18 of the disaster prevention receiving panel 10 reports a monitoring failure sign and then receives a contamination signal from at least one of the fire detection devices 16 adjacent to the monitoring area where the monitoring failure sign is reported, , the monitoring failure corresponding to the monitoring area is notified.

(監視障害予兆と監視障害の判定条件)
図6は防災受信盤に設定された監視障害予兆と監視障害の判定条件を一覧で例示した説明図であり、図2に示した監視エリアAiの判定条件を例にとっている。
(Monitoring Failure Predictor and Monitoring Failure Judgment Conditions)
FIG. 6 is an explanatory diagram showing a list of monitoring failure signs and monitoring failure determination conditions set in the disaster prevention receiving panel, taking the monitoring area Ai shown in FIG. 2 as an example.

監視エリアAiを監視しているのはi番目の火災検出装置16の右眼側火災検出部とi+1番目の火災検出装置16の左眼火災検出部であるが、ここでは右眼、左眼を省略して説明する。 The monitoring area Ai is monitored by the right-eye fire detection section of the i-th fire detection device 16 and the left-eye fire detection section of the i+1-th fire detection device 16. Here, the right eye and the left eye are monitored. Description will be omitted.

図6に示すように、監視エリアAiに対しては、隣接してi番目とi+1番目の火災検知装置16が配置されて監視エリアAiを重複して監視している。 As shown in FIG. 6, the i-th and i+1-th fire detection devices 16 are arranged adjacent to the monitoring area Ai to monitor the monitoring area Ai redundantly.

モード1は隣接したこれら2台の火災検知装置16の汚損レベルが双方とも汚損予兆閾
値に達しない正常な状態であり、この場合警報報知は行われない。
Mode 1 is a normal state in which the contamination levels of these two adjacent fire detection devices 16 do not reach the contamination sign threshold value, and in this case no alarm is issued.

モード2,3は、隣接した2台の火災検知装置16の何れか一方が汚損予兆となった場合であり、汚損予兆となっていない火災検知装置16による監視エリアAiの全部監視が行われていることから、警報報知は行われない。 Modes 2 and 3 are cases in which either one of the two adjacent fire detection devices 16 becomes a sign of contamination, and the entire monitoring area Ai is monitored by the fire detection devices 16 that do not show signs of contamination. Therefore, no warning is issued.

モード4は、隣接した火災検知装置16の両方が汚損予兆となった場合であり、追って何れか一方または両方の火災検知装置16が汚損状態に移行すると、監視エリアAi全部の重複監視の機能が失われることになるので、監視エリアAiの監視障害予兆が報知される。 Mode 4 is a case where both of the adjacent fire detection devices 16 become a sign of contamination, and if one or both of the fire detection devices 16 subsequently shift to a contamination state, the function of overlapping monitoring of the entire monitoring area Ai is disabled. Since it will be lost, a monitoring failure sign of the monitoring area Ai is notified.

モード5,6は、隣接した火災検知装置16の両方が汚損予兆となって監視障害予兆が報知された後に、何れか一方の火災検知装置16が汚損状態となった場合であり、監視エリアAiの中に重複監視できない部分が生じていることから、監視エリアAiの監視障害が報知される。 Modes 5 and 6 are cases in which one of the fire detection devices 16 is in a dirty state after both of the adjacent fire detection devices 16 become a sign of contamination and a sign of monitoring failure is notified. Since there is a part that cannot be monitored redundantly in the monitoring area Ai, a monitoring failure in the monitoring area Ai is notified.

モード7,8は、隣接した火災検知装置16の一方が正常で他方が汚損となった場合であり、正常な火災検知装置16により監視エリアAiの全部監視は行われているが、監視エリア全部の重複した監視機能が失われていることから、監視エリアAiの監視障害が報知される。 Modes 7 and 8 are cases in which one of the adjacent fire detection devices 16 is normal and the other is soiled. Since the redundant monitoring function of Ai is lost, a monitoring failure of the monitoring area Ai is notified.

モード9は、隣接した火災検知装置16の両方が汚損となった場合であり、監視エリアAiの中に監視できない部分が生じていることから、監視エリアAiの監視障害が報知される。 Mode 9 is a case where both of the adjacent fire detection devices 16 are soiled, and since there is a portion in the monitoring area Ai that cannot be monitored, a monitoring failure in the monitoring area Ai is notified.

このような監視障害予兆と監視障害の判定条件は、隣接配置された火災検知装置16により重複監視されている他の監視エリアについても同様となる。 Such monitoring failure signs and monitoring failure determination conditions are the same for other monitoring areas that are redundantly monitored by the fire detection devices 16 arranged adjacently.

一方、トンネルの入口及び出口の監視エリア、例えば図2の監視エリアA1にあっては、1番目の火災検知装置16のみの監視であり、防災受信盤10の制御部18は、火災検知装置16が汚損予想状態となった場合に、監視エリアA1の監視障害予兆を報知し、また、火災検知装置16が汚損となった場合に、監視障害を報知する。 On the other hand, in the monitoring area of the entrance and exit of the tunnel, for example, the monitoring area A1 in FIG. is in a state of anticipation of contamination, a sign of monitoring failure of the monitoring area A1 is notified, and when the fire detection device 16 is tainted, a monitoring failure is notified.

なお、図6のモード5,6は、一方の火災検知装置が汚損予兆で他方の火災検知装置が汚損となっているが、この場合の警報を、図示の監視障害とせずに、監視障害予兆としても良い。このとき、汚損予兆の火災検知装置は監視エリア全部を監視しており、また、汚損予兆の火災検知装置は監視エリアの一部を重複して監視しており、このため、ただちに監視障害とせず、この段階では監視障害予兆と評価し、監視エリアの監視障害予兆を報知して注意を促すようにしても良い。その他、図6のモード7、8を監視障害予兆として扱うなどの変形例も採用しうる。 In modes 5 and 6 of FIG. 6, one fire detection device is a sign of contamination and the other fire detection device is contamination. It is good as At this time, the fire detection device for signs of contamination is monitoring the entire monitoring area, and the fire detection device for signs of contamination is monitoring part of the monitoring area redundantly. At this stage, it may be evaluated as a monitoring failure sign, and a monitoring failure sign in the monitoring area may be notified to call attention. In addition, a modification such as treating modes 7 and 8 in FIG. 6 as a monitor failure sign can also be adopted.

また、監視障害予兆をその監視エリアの汚損予兆として、監視障害をその監視エリアの汚損として警報するようにしても良い。 Alternatively, a monitoring failure sign may be used as a defacement sign of the monitoring area, and a monitoring failure may be alarmed as a defacement of the monitoring area.

(防災受信盤の制御動作)
図7は図5の防災受信盤10による監視制御を例示したフローチャートであり、防災受信盤10に設けられた制御部18の制御動作となる。
(Control operation of disaster prevention receiving panel)
FIG. 7 is a flowchart exemplifying monitoring control by the disaster prevention receiver 10 of FIG.

図7に示すように、防災受信盤10の制御部18は、ステップS1でトンネル内に設置された火災検知装置16に対する呼出電文に対する応答電文を受信して火災の有無を監視しており、受信した応答電文から火災情報を検出すると、警報部22に指示して火災警報を出力させると共にIO部30に指示して他設備の連動制御を行なわせる。 As shown in FIG. 7, the control unit 18 of the disaster prevention receiving panel 10 receives a response telegram to the call telegram to the fire detection device 16 installed in the tunnel in step S1 and monitors the presence or absence of a fire. When fire information is detected from the received response message, the alarm unit 22 is instructed to output a fire alarm, and the IO unit 30 is instructed to perform interlocking control of other equipment.

ステップS1の火災監視処理に続き、制御部18はステップS2で火災検知装置16からの汚損予兆信号の受信を判別するとステップS3に進み、汚損予兆信号に設定されている火災検知装置16のアドレスからその監視エリアを判定し、判定した監視エリアに対応したメモリの状態格納領域に汚損予兆を設定し、続いて、ステップS4で汚損予兆を設定した状態格納領域を重複監視している火災検出装置16の火災検出部(透光性窓36)が汚損予兆状態であるか否か、即ち、監視エリアに隣接した火災検知装置16の、対応する火災検出部の両方が汚損予兆か否か判別する。 Following the fire monitoring process in step S1, when the controller 18 determines in step S2 that it has received the defacement sign signal from the fire detection device 16, it advances to step S3, where it starts from the address of the fire detection device 16 set in the defacement sign signal. The fire detection device 16 determines the monitoring area, sets a sign of contamination in the state storage area of the memory corresponding to the determined monitoring area, and then redundantly monitors the state storage area in which the sign of contamination is set in step S4. (translucent window 36) is in a state of sign of contamination, that is, whether or not both of the corresponding fire detection units of the fire detection devices 16 adjacent to the monitoring area are in a sign of contamination.

ここで、汚損予兆信号には汚損予兆情報として、あるいはそれとは別に、汚損予兆状態となった火災検出部(右眼、左眼)の別が付されている。汚損信号についても同様である。 Here, the contamination predictor signal is provided with identification of the fire detection unit (right eye, left eye) that has become the contamination predictor state as the contamination predictor information or separately. The same is true for the corrupted signal.

ステップS4で制御部18が当該監視エリアを重複監視している火災検出装置16の火災検出部(透光性窓36)が汚損予兆状態にあることを判別するとステップS5に進み、当該監視エリアの監視障害予兆を報知させる。 In step S4, when the control unit 18 determines that the fire detection unit (the translucent window 36) of the fire detection device 16 that is redundantly monitoring the monitoring area is in a contamination sign state, the process proceeds to step S5, and the monitoring area is checked. Notification of a monitoring failure sign.

続いて、ステップS6に進み、制御部18は火災検知装置16からの汚損信号の受信を判別すると、ステップS7に進み、対応する監視エリアの監視障害を報知させる。 Subsequently, in step S6, when the controller 18 determines that the contamination signal has been received from the fire detection device 16, the process proceeds to step S7 to report a monitoring failure in the corresponding monitoring area.

また、制御部18は、ステップS2で汚損予兆信号の受信を判別しなかった場合にもステップS6に進み、汚損信号の受信の有無を判別している。 Further, even when the control unit 18 does not determine reception of the pollution sign signal in step S2, the control unit 18 advances to step S6 to determine whether or not the pollution signal is received.

[本発明の変形例]
(火災検知装置)
上記の実施形態は2波長方式の火災検知装置を例にとっているが、これに限定されず、他の方式でも良い。例えば、前述した2波長に加え、例えば、3.8μm付近の波長帯域における放射線エネルギーを他の波長と同様の手法で検出し、これらの3波長帯域における各受光信号の相対比によって炎の有無を判定する3波長式の炎検出器としても良い。
[Modification of the present invention]
(Fire detection device)
Although the above-described embodiment exemplifies a two-wavelength fire detection device, the present invention is not limited to this, and other methods may be used. For example, in addition to the above-mentioned two wavelengths, for example, radiation energy in a wavelength band near 3.8 μm is detected in the same manner as for other wavelengths, and the presence or absence of flame is determined based on the relative ratio of the received light signals in these three wavelength bands. A three-wavelength flame detector for determination may also be used.

(汚損予兆と汚損の報知)
上記の実施形態は、監視エリアに隣接した火災検知装置から受信した汚損予兆信号と汚損信号に基づき、防災受信盤で、対応する監視エリアの監視障害予兆と監視障害を報知しているが、これに限定されない。例えば、監視エリアの監視障害予兆と監視障害に連携して、監視エリアに隣接配置された火災検知装置の汚損予兆と汚損を個別に報知するようにしても良い。
(Prediction of contamination and notification of contamination)
In the above-described embodiment, based on the contamination sign and contamination signal received from the fire detection device adjacent to the monitoring area, the disaster prevention receiver notifies the monitoring failure sign and monitoring failure of the corresponding monitoring area. is not limited to For example, in association with the monitoring failure sign and monitoring failure of the monitoring area, the contamination sign and contamination of the fire detection device arranged adjacent to the monitoring area may be reported separately.

(汚損以外の要因による障害状況の報知)
上記の実施形態は、正常(非汚損)、汚損予兆、汚損といった透光性窓の汚損の状況に応じて、システム上の監視性能上の障害状況(監視障害予兆、監視障害)を評価して処理する防災システムを例にとっているが、更に、火災検知装置の回路故障(無信号や無応答、回路故障など)を汚損と同じに扱うことで、システム上の監視性能上の障害状況(監視障害予兆、監視障害)を評価して処理する防災システムとしても良い。
(Notification of failure status due to factors other than contamination)
In the above-described embodiment, failure conditions (monitoring failure sign, monitoring failure) on the monitoring performance of the system are evaluated according to the contamination status of the translucent window, such as normal (no contamination), contamination sign, and contamination. In addition, by treating circuit failures (no signal, no response, circuit failures, etc.) of fire detection equipment in the same way as pollution, the failure status of monitoring performance on the system (monitoring failure) is taken as an example. It is also possible to use a disaster prevention system that evaluates and processes signs, monitoring failures).

(その他)
また本発明は、その目的と利点を損なわない適宜の変形を含み、更に上記の実施形態に示した数値による限定は受けない。
(others)
The present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values shown in the above embodiments.

1a:上り線トンネル
1b:下り線トンネル
10:防災受信盤
12a,12b:伝送回線
16:火災検知装置
16a,16b:火災検出部
18,32:制御部
20a,20b,34:伝送部
36:透光性窓
38a,38b:受光部
40a,40b:増幅処理部
42:試験光源部
44:汚損受光部
45:汚損検知部
46:増幅部
48:火災判定部
50:汚損処理部
1a: Up line tunnel 1b: Down line tunnel 10: Disaster prevention receivers 12a, 12b: Transmission line 16: Fire detection devices 16a, 16b: Fire detection units 18, 32: Control units 20a, 20b, 34: Transmission unit 36: Transparent Optical windows 38a, 38b: light receiving units 40a, 40b: amplification processing unit 42: test light source unit 44: contamination light receiving unit 45: contamination detection unit 46: amplification unit 48: fire determination unit 50: contamination processing unit

(防災システム1)
本発明は、受信装置に複数の検知装置を接続した防災システムであって、
火災検知装置は対応する監視エリアにおける火災を検出した場合に、受信装置火災検出情報送信する火災判定部備え、
受信装置は、
複数の火災検知装置の各々から自己の故障状況を示す情報を取得し、当該取得した前記複数の火災検知装置の故障状況を示す情報に基づいて、複数の火災検知装置の各々の故障状況が所定の故障状態であるか、故障状態に至る予兆と認められる故障予兆状態であるか、又は故障状態でも故障予兆状態でもない正常状態であるか識別して判定し、
複数の火災検知装置のうち相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々について判定した故障状況の組み合わせに基づいて、対応する同一の監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 1)
The present invention is a disaster prevention system in which a plurality of detection devices are connected to a receiving device,
The fire detection device includes a fire determination unit that transmits fire detection information to the receiving device when a fire is detected in the corresponding monitoring area,
The receiving device
Acquiring information indicating its own failure status from each of a plurality of fire detection devices, and determining the failure status of each of the plurality of fire detection devices based on the obtained information indicating the failure status of the plurality of fire detection devices a failure state, a failure predictor state that is recognized as a sign leading to a failure state , or a normal state that is neither a failure state nor a failure predictor state .
Monitoring failure sign or monitoring failure in the corresponding same monitoring area based on the combination of failure conditions determined for each of the multiple fire detection devices that monitor the same monitoring area redundantly among the multiple fire detection devices is characterized by determining

(防災システム2)
本発明は、受信装置に複数の検知装置を接続した防災システムであって、
火災検知装置は対応する監視エリアにおける火災を検出した場合に、受信装置火災検出情報送信する火災判定部備え、
受信装置は、
複数の火災検知装置の各々から自己の故障状況を示す情報を取得し、当該取得した前記複数の火災検知装置の故障状況を示す情報に基づいて、複数の火災検知装置の各々の故障状況が所定の故障状態であるか、故障状態に至る予兆と認められる故障予兆状態であるか、又は故障状態でも故障予兆状態でもない正常状態であるか識別して判定し、
複数の火災検知装置のうち相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々について判定した故障状況の組み合わせの推移に基づいて、対応する同一の監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 2)
The present invention is a disaster prevention system in which a plurality of detection devices are connected to a receiving device,
The fire detection device includes a fire determination unit that transmits fire detection information to the receiving device when a fire is detected in the corresponding monitoring area,
The receiving device
Acquiring information indicating its own failure status from each of a plurality of fire detection devices, and determining the failure status of each of the plurality of fire detection devices based on the obtained information indicating the failure status of the plurality of fire detection devices a failure state, a failure predictor state that is recognized as a sign leading to a failure state , or a normal state that is neither a failure state nor a failure predictor state .
Based on the transition of the combination of failure conditions determined for each of the multiple fire detection devices that redundantly monitor the same monitoring area among the multiple fire detection devices, the monitoring failure sign or It is characterized by judging a monitoring failure.

(防災システム3)
本発明は、受信装置に複数の火災検知装置を接続した防災システムであって、
火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災を検出した場合に、受信装置火災検出情報送信する火災判定部と、
受光部に対応する透光性窓の汚損レベルを検出して、汚損レベルに基づき汚損状況に関する信号を受信装置へ送信する汚損処理部と、
を備え、
受信装置は、
複数の火災検知装置の各々から汚損状況を示す情報を取得し、当該取得した前記複数の火災検知装置の汚損状況を示す情報に基づいて、複数の火災検知装置の各々の汚損状況が所定の汚損状態であるか、汚損状態に至る予兆と認められる汚損予兆状態であるか、又は故障状態でも故障予兆状態でもない正常状態であるか識別して判定し、
複数の火災検知装置のうち相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々について判定した汚損状況の組み合わせに基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 3)
The present invention is a disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
Fire detection equipment
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
a fire determination unit that transmits fire detection information to a receiving device when a fire is detected in a corresponding monitoring area based on the electrical signal from the light receiving unit;
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Acquiring information indicating the state of contamination from each of a plurality of fire detection devices, and based on the obtained information indicating the state of contamination of the plurality of fire detection devices, determining the state of contamination of each of the plurality of fire detection devices to a predetermined degree of contamination identify and determine whether it is in a state, a contamination predictive state that is recognized as a sign leading to a contamination state , or a normal state that is neither a failure state nor a failure predictor state ;
Judgment of a sign of monitoring failure or a monitoring failure in the corresponding monitoring area based on the combination of contamination conditions determined for each of the plurality of fire detection devices that monitor the same monitoring area redundantly among the plurality of fire detection devices. characterized by

(防災システム4)
本発明は、受信装置に複数の火災検知装置を接続した防災システムであって、
火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
受光部からの電気信号に基づいて、対応する監視エリアにおける火災を検出した場合に、受信装置火災検出情報送信する火災判定部と、
受光部に対応する透光性窓の汚損レベルを検出して、汚損レベルに基づき汚損状況に関する信号を受信装置へ送信する汚損処理部と、
を備え、
受信装置は、
複数の火災検知装置の各々から汚損状況を示す情報を取得し、当該取得した前記複数の火災検知装置の汚損状況を示す情報に基づいて、複数の火災検知装置の各々の汚損状況が所定の汚損状態であるか、汚損状態に至る予兆と認められる汚損予兆状態であるか、又は故障状態でも故障予兆状態でもない正常状態であるか識別して判定し、
複数の火災検知装置のうち相互に同一の監視エリアを重複して監視する複数の火災検知装置の各々について判定した汚損状況の組み合わせの推移に基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする。
(Disaster prevention system 4)
The present invention is a disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
Fire detection equipment
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
a fire determination unit that transmits fire detection information to a receiving device when a fire is detected in a corresponding monitoring area based on the electrical signal from the light receiving unit;
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Acquiring information indicating the state of contamination from each of a plurality of fire detection devices, and based on the obtained information indicating the state of contamination of the plurality of fire detection devices, determining the state of contamination of each of the plurality of fire detection devices to a predetermined degree of contamination identify and determine whether it is in a state, a contamination predictive state that is recognized as a sign leading to a contamination state , or a normal state that is neither a failure state nor a failure predictor state ;
A sign of monitoring failure or a monitoring failure in the corresponding monitoring area based on the transition of the combination of contamination conditions determined for each of the plurality of fire detection devices that redundantly monitor the same monitoring area. is characterized by determining

Claims (4)

受信装置に複数の火災検知装置を接続した防災システムであって、
前記火災検知装置は、
監視エリアからの放射線を受光して電気信号に変換する受光部と、
前記受光部からの電気信号に基づいて、対応する前記監視エリアにおける火災の有無を判定した場合に、前記受信装置からの呼出信号に対する応答信号に火災検出情報を設定して前記受信装置へ送信する火災判定部と、
を備え、
前記受信装置は、
複数の前記火災検知装置を順次指定した呼出信号を繰り返し送信して、前記呼出信号に対する応答信号を受信し、
前記呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の前記火災検知装置の故障状況が所定の故障状態であるか、前記故障状況に至る予兆と認められる故障予兆状態であるかを判定し、
前記相互に同一の監視エリアを重複して監視する前記複数の火災検知装置の各々の前記故障予兆状態及び前記故障状態の組み合わせに基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする防災システム。
A disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
The fire detection device
a light receiving unit that receives radiation from a monitored area and converts it into an electrical signal;
When the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving unit, fire detection information is set in a response signal to the call signal from the receiving device and transmitted to the receiving device. a fire determination unit;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of the fire detection devices, and receiving a response signal to the call signal;
Based on the reception status of the response signal to the call signal, the failure status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined failure status or the failure status Determining whether it is a failure sign state that is recognized as a sign leading to a situation,
Based on a combination of the failure portent state and the failure state of each of the plurality of fire detection devices that redundantly monitor the same monitoring area, the monitoring failure portent or monitoring failure of the corresponding monitoring area is determined. A disaster prevention system characterized by:
受信装置に複数の火災検知装置を接続した防災システムであって、
前記火災検知装置は、
監視エリアからの放射線を受光して電気信号に変換する受光部と、
前記受光部からの電気信号に基づいて、対応する前記監視エリアにおける火災の有無を判定した場合に、前記受信装置からの呼出信号に対する応答信号に火災検出情報を設定して前記受信装置へ送信する火災判定部と、
を備え、
前記受信装置は、
複数の前記火災検知装置を順次指定した呼出信号を繰り返し送信して、前記呼出信号に対する応答信号を受信し、
前記呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の前記火災検知装置の故障状況が所定の故障状態であるか、前記故障状況に至る予兆と認められる故障予兆状態であるかを判定し、
前記相互に同一の監視エリアを重複して監視する前記複数の火災検知装置の各々の前記故障予兆状態及び前記故障状態の組み合わせの推移に基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする防災システム。
A disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
The fire detection device
a light receiving unit that receives radiation from a monitored area and converts it into an electrical signal;
When the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving unit, fire detection information is set in a response signal to the call signal from the receiving device and transmitted to the receiving device. a fire determination unit;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of the fire detection devices, and receiving a response signal to the call signal;
Based on the reception status of the response signal to the call signal, the failure status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined failure status or the failure status Determining whether it is a failure sign state that is recognized as a sign leading to a situation,
Based on transition of the combination of the failure sign state and the failure state of each of the plurality of fire detection devices that redundantly monitor the same monitoring area, the monitoring failure sign or monitoring failure of the corresponding monitoring area is detected. A disaster prevention system characterized by judging.
受信装置に複数の火災検知装置を接続した防災システムであって、
前記火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
前記受光部からの電気信号に基づいて、対応する前記監視エリアにおける火災の有無を判定した場合に、前記受信装置からの呼出信号に対する応答信号に火災検出情報を設定して前記受信装置へ送信する火災判定部と、
前記受光部に対応する前記透光性窓の汚損レベルを検出して、前記汚損レベルに基づき汚損状況に関する信号を前記受信装置へ送信する汚損処理部と、
を備え、
前記受信装置は、
複数の前記火災検知装置を順次指定した呼出信号を繰り返し送信して、前記呼出信号に対する応答信号を受信し、
前記呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の前記火災検知装置の汚損状況が所定の汚損状態であるか、前記汚損状況に至る予兆と認められる汚損予兆状態であるかを判定し、
前記相互に同一の監視エリアを重複して監視する前記複数の火災検知装置の各々の前記汚損予兆状態及び前記汚損状態の組み合わせに基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする防災システム。
A disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
The fire detection device
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
When the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving unit, fire detection information is set in a response signal to the call signal from the receiving device and transmitted to the receiving device. a fire determination unit;
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of the fire detection devices, and receiving a response signal to the call signal;
Based on the reception status of the response signal to the call signal, the contamination status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined contamination state or the contamination condition. Determining whether it is a contamination sign state that is recognized as a sign leading to a situation,
Based on the combination of the defacement portent state and the defacement state of each of the plurality of fire detection devices that redundantly monitor the same monitoring area, a monitoring failure portent or monitoring failure of the corresponding monitoring area is determined. A disaster prevention system characterized by:
受信装置に複数の火災検知装置を接続した防災システムであって、
前記火災検知装置は、
透光性窓を介して監視エリアからの放射線を受光して電気信号に変換する受光部と、
前記受光部からの電気信号に基づいて、対応する前記監視エリアにおける火災の有無を判定した場合に、前記受信装置からの呼出信号に対する応答信号に火災検出情報を設定して前記受信装置へ送信する火災判定部と、
前記受光部に対応する前記透光性窓の汚損レベルを検出して、前記汚損レベルに基づき汚損状況に関する信号を前記受信装置へ送信する汚損処理部と、
を備え、
前記受信装置は、
複数の前記火災検知装置を順次指定した呼出信号を繰り返し送信して、前記呼出信号に対する応答信号を受信し、
前記呼出信号に対する応答信号の受信状況に基づき、相互に隣接して配置されて同一の監視エリアを重複して監視する複数の前記火災検知装置の汚損状況が所定の汚損状態であるか、前記汚損状況に至る予兆と認められる汚損予兆状態であるかを判定し、
前記相互に同一の監視エリアを重複して監視する前記複数の火災検知装置の各々の前記汚損予兆状態及び前記汚損状態の組み合わせの推移に基づいて、対応する監視エリアの監視障害予兆又は監視障害を判定することを特徴とする防災システム。
A disaster prevention system in which a plurality of fire detection devices are connected to a receiving device,
The fire detection device
a light-receiving unit that receives radiation from a monitored area through a translucent window and converts it into an electrical signal;
When the presence or absence of a fire in the corresponding monitoring area is determined based on the electrical signal from the light receiving unit, fire detection information is set in a response signal to the call signal from the receiving device and transmitted to the receiving device. a fire determination unit;
a contamination processing unit that detects the contamination level of the translucent window corresponding to the light receiving unit and transmits a signal regarding the contamination status to the receiving device based on the contamination level;
with
The receiving device
Repeatedly transmitting a call signal sequentially specifying a plurality of the fire detection devices, and receiving a response signal to the call signal;
Based on the reception status of the response signal to the call signal, the contamination status of the plurality of fire detection devices arranged adjacent to each other and redundantly monitoring the same monitoring area is a predetermined contamination state or the contamination condition. Determining whether it is a contamination sign state that is recognized as a sign leading to a situation,
Based on transition of the contamination sign state and the combination of the contamination state of each of the plurality of fire detection devices that redundantly monitor the same monitoring area, a monitoring failure sign or monitoring failure in the corresponding monitoring area is detected. A disaster prevention system characterized by judging.
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