JP7507200B2 - Disaster Prevention System - Google Patents

Disaster Prevention System Download PDF

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JP7507200B2
JP7507200B2 JP2022085714A JP2022085714A JP7507200B2 JP 7507200 B2 JP7507200 B2 JP 7507200B2 JP 2022085714 A JP2022085714 A JP 2022085714A JP 2022085714 A JP2022085714 A JP 2022085714A JP 7507200 B2 JP7507200 B2 JP 7507200B2
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JP2022122933A (en
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みのり 羽鳥
滋良 中尾
健太 鈴木
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Hochiki Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description

本発明は、監視エリアに設置した通報装置や検知器等の端末機器を防災受信盤に接続して監視エリアの異常を監視する防災システムに関する。 The present invention relates to a disaster prevention system that monitors abnormalities in a monitoring area by connecting terminal devices such as reporting devices and detectors installed in the monitoring area to 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を守るため、非常用施設が設置されている。 Traditionally, emergency facilities have been installed in tunnels on expressways and other roads to protect people and vehicles from fires that may occur inside the tunnel.

このような非常用施設としては、火災の監視と通報のため火災検知器、手動通報装置、非常電話が設けられ、また火災の消火や延焼防止のために消火栓装置が設けられ、更にトンネル躯体やダクト内を火災から防護するために水噴霧ヘッドから消火用水を散水させる水噴霧などが設置され、これらの非常用施設の端末機器を監視制御する防災受信盤を設けることで、トンネル防災システムを構築している。 Such emergency facilities include fire detectors, manual reporting devices, and emergency telephones for monitoring and reporting fires, as well as fire hydrants for extinguishing fires and preventing the spread of fires, and water sprayers that spray water from water spray heads to protect the tunnel structure and inside the ducts from fires. A tunnel disaster prevention system is created by installing a disaster prevention receiving panel that monitors and controls the terminal equipment of these emergency facilities.

防災受信盤と端末機器で構成するトンネル防災システムは、R型伝送方式とP型直送方式に大別される。R型伝送方式は、伝送回線にアドレスを設定した火災検知器等の端末機器を接続し、伝送制御により端末機器単位に検知と制御を行う個別管理を可能とする。P型直送方式は、端末機器の種別に応じて所定の区画単位に分け、区画単位に引き出した信号回線に同一区画に属する複数の端末機器を接続し、信号回線単位に検知と制御を行う。 Tunnel disaster prevention systems, consisting of disaster prevention receiving panels and terminal devices, are broadly divided into R-type transmission methods and P-type direct transmission methods. The R-type transmission method connects terminal devices such as fire detectors with addresses set to the transmission line, enabling individual management with detection and control on a terminal device basis through transmission control. The P-type direct transmission method divides the terminal devices into designated partition units according to their type, connects multiple terminal devices belonging to the same partition to the signal lines drawn out for each partition, and performs detection and control on a signal line basis.

ところで、P型直送方式のトンネル防災システムにあっては、手動通報装置、消火栓起動装置、ダクト温度検知器等の端末機器は、操作又は検知による信号出力部を無電圧a接点スイッチとして構成し、防災受信盤から引き出された信号回線に無電圧a接点スイッチ接続している。無電圧a接点スイッチは通常監視状態でオフしており、操作や検知動作によりオンして無電圧接点信号を出力する。 In a tunnel disaster prevention system using the P-type direct transmission method, the terminal devices such as the manual reporting device, fire hydrant activation device, and duct temperature detector are configured with a no-voltage a-contact switch as a signal output section in response to operation or detection, and the no-voltage a-contact switch is connected to a signal line drawn from the disaster prevention receiving panel. The no-voltage a-contact switch is normally off in the monitoring state, and is turned on by operation or detection to output a no-voltage contact signal.

具体的には、防災受信盤側から信号回線の一方にプルアップ抵抗を介して電源電圧を印加しており、無電圧a接点スイッチがオフした定常監視状態では、信号回線に消費電流は殆ど流れず、防災受信盤から見た信号回線間の電源電圧は略電源電圧に保たれている。無電圧a接点スイッチがオンすると信号回線に電流が流れ、防災受信盤から見た信号回線間の電圧は略零ボルトに低下し、防災受信盤は信号回線の消費電流の増加又は信号回線間の電圧低下を検出して端末機器の操作又は検知を示す受信信号を制御部に出力する。 Specifically, the power supply voltage is applied from the disaster prevention receiving panel to one of the signal lines via a pull-up resistor, and in the steady monitoring state with the no-voltage a-contact switch off, almost no current flows through the signal line, and the power supply voltage between the signal lines as seen from the disaster prevention receiving panel is kept at approximately the power supply voltage. When the no-voltage a-contact switch is on, current flows through the signal line, and the voltage between the signal lines as seen from the disaster prevention receiving panel drops to approximately zero volts. The disaster prevention receiving panel detects an increase in current consumption in the signal line or a drop in voltage between the signal lines, and outputs a reception signal to the control unit indicating the operation or detection of the terminal device.

例えば手動通報装置からの火災通報信号であれば、防災受信盤は、火災表示、端末側の応答ランプの点灯制御、手動通報区画表示、消火ポンプ起動信号の出力といった制御動作を行うと共に、遠方監視制御設備、テレビ監視設備、可変式道路情報板設備、トンネル換気設備、照明設備等の外部設備に火災通報信号を送信して所定の対処制御を行わせるようにしている。 For example, if a fire report signal is received from a manual reporting device, the disaster prevention receiving panel performs control operations such as displaying a fire, controlling the lighting of the response lamp on the terminal, displaying the manual reporting section, and outputting a fire pump start signal, and also transmits the fire report signal to external equipment such as remote monitoring and control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment to carry out the required response control.

特開2002-246962号公報JP 2002-246962 A 特開平11-128381号公報Japanese Patent Application Laid-Open No. 11-128381 特開平5-266373号公報Japanese Patent Application Laid-Open No. 5-266373 特開2015-130929号公報JP 2015-130929 A 特開2016-103059号公報JP 2016-103059 A 特開2011-215903号公報JP 2011-215903 A

このような従来のP型直送方式のトンネル防災システムにあっては、端末機器を接続している信号回線(外線ケーブル)の経年劣化等により絶縁低下が進み、端末機器を接続している信号回線に通常監視状態で想定される以上の電流が流れ、防災受信盤は端末機器の操作又は検知動作による信号受信と判断して警報動作を行うと共に、遠方監視制御設備、テレビ監視設備、可変式道路情報板設備、トンネル換気設備、照明設備等の他設備を連動し、トンネルを通行止めにすることが度々生じている。 In such conventional P-type direct tunnel disaster prevention systems, deterioration over time of the signal lines (external cables) connecting the terminal devices leads to deterioration of insulation, causing a current greater than that expected in normal monitoring conditions to flow through the signal lines connecting the terminal devices. The disaster prevention receiving panel judges this to be a signal received due to the operation or detection of the terminal device and issues an alarm. It also frequently links up with other equipment such as remote monitoring and control equipment, television monitoring equipment, variable road information board equipment, tunnel ventilation equipment, and lighting equipment, and closes the tunnel to traffic.

この問題を解決するため、防災受信盤とは別の筐体に電流監視装置を設け、無電圧a接点スイッチを設けた端末機器を接続した信号回線に流れる電流を、例えば1日1回というように定周期で測定して記録し、更に、測定した電流が所定の閾値範囲を外れた場合に信号回線の電流値異常を判定して警報するようにしている。 To solve this problem, a current monitoring device is installed in a separate housing from the disaster prevention receiving panel, and the current flowing through the signal line connected to a terminal device equipped with a non-voltage a-contact switch is measured and recorded at regular intervals, for example once a day, and if the measured current falls outside a specified threshold range, an abnormality in the current value of the signal line is determined and an alarm is issued.

ところで、防災受信盤で火災通報信号を受信して火災警報が出力された場合や、信号回線の障害が検出されて障害警報が出力された場合には、その後の調査作業の段階で、火災信号が受信された火災回線や障害が検出された障害回線について、電流監視装置で測定された測定履歴を表示させ、火災回線や障害回線がどのような状態にあったかを調べる場合がある。 When a fire alarm is output in response to a fire notification signal received by a disaster prevention receiving panel, or when a fault in a signal line is detected and a fault alarm is output, during the subsequent investigation stage, the measurement history measured by a current monitoring device for the fire line on which the fire signal was received or the fault line on which a fault was detected may be displayed to investigate the state of the fire line or the fault line.

しかしながら、従来は防災受信盤に対し電流監視装置を別の筐体に設けているため、防災受信盤から火災情報や障害情報等を電流測定装置に送って測定履歴と共に記憶させる伝送機能と処理機能が必要となり、設備構成と処理が複雑になる問題もある。 However, conventionally, the current monitoring device is installed in a separate housing from the disaster prevention receiving panel, which requires transmission and processing functions to send fire and fault information from the disaster prevention receiving panel to the current measuring device and store it together with the measurement history, resulting in problems such as complex equipment configuration and processing.

また、従来の防災受信盤にあっては、筐体前面に配置されたグラフィックパネルに、トンネル系統図を配置し、系統図の中に、手動通報装置及び消火栓起動装置に分けて回線表示灯を配列しており、手動通報装置から火災通報信号を受信して火災警報を出力した場合に、手動通報装置に対応した回線表示灯を点灯して火災発生区画を表示させており、また、消火栓起動装置からポンプ起動信号を受信した場合に、消火栓起動装置に対応した回線表示灯を点灯して消火栓が起動された区画を表示させている。 In addition, in conventional disaster prevention receiving panels, a tunnel system diagram is displayed on a graphic panel located on the front of the housing, and line indicator lights are arranged within the system diagram, separated into manual reporting devices and fire hydrant activation devices. When a fire notification signal is received from a manual reporting device and a fire alarm is output, the line indicator light corresponding to the manual reporting device is lit to indicate the compartment in which the fire has occurred, and when a pump activation signal is received from the fire hydrant activation device, the line indicator light corresponding to the fire hydrant activation device is lit to indicate the compartment in which the fire hydrant has been activated.

また、防災受信盤は信号回線による火災監視以外に信号回線の断線監視を行っており、筐体の前面パネルで断線障害の代表表示を行うようにしている。 In addition to monitoring fires via signal lines, the disaster prevention receiving panel also monitors for disconnections in the signal lines, and displays a representative display of any disconnection faults on the front panel of the housing.

しかしながら、断線障害が起きている信号回線を調べるには手間と時間がかかり、どの区画の信号回線にトラブルが起きているかを簡単に確認できない問題がある。 However, investigating which signal line is experiencing a disconnection is time-consuming and laborious, and there is a problem in that it is not easy to determine which section of the signal line is experiencing the problem.

本発明は、監視エリアで発生した異常以外に断線障害、電流値異常又は電流値異常等の信号回線に生じた異常を含めて誰でも容易に把握して必要な対処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。 The present invention aims to provide a disaster prevention system that allows anyone to easily grasp abnormalities that occur in the signal line, such as disconnection faults, current value abnormalities, or current value abnormalities, in addition to abnormalities that occur in the monitored area, and to take the necessary measures.

(防災システム)
本発明は、
監視エリアに対応して配置した端末機器から信号回線を介して送信され防災受信盤で受信される所定の信号に基づく監視エリアで発生した異常及び信号回線に生じた異常を含む複数種類の事象に関する表示を行う防災システムに於いて、
防災受信盤は、
表示の対象となる事象の種類に応じて異なる態様の表示をする表示部と、
表示部により信号回線に所定の異常が生じた状態である旨を表示するときに、当該信号回線に生じた所定の異常に関する内容情報を表示する第2の表示部と、
少なくとも信号回線に異常が生じたと判定した結果及びその判定結果の元となった当該信号回線の電流値を表示する第3の表示部と、
を備え、
防災受信盤の筐体に、当該筐体の前方回りに回動することにより開閉可能な扉を設け、
表示部及び第2の表示部は、扉の閉鎖時に筐体の前方から視認される扉の表面配置され、
第3の表示部は、扉の開放時に表示部及び第2の表示部が視認されない位置から視認される場合が存在する筐体内部に配置されたことを特徴とする。
(Disaster prevention system)
The present invention relates to
In a disaster prevention system that displays a plurality of types of events including abnormalities occurring in a monitoring area and abnormalities occurring in a signal line based on a predetermined signal transmitted from a terminal device arranged corresponding to the monitoring area via a signal line and received by a disaster prevention receiving panel,
Disaster prevention receiving panel,
A display unit that displays different aspects according to the type of event to be displayed;
a second display unit that displays content information regarding the predetermined abnormality occurring in the signal line when the display unit displays that the predetermined abnormality has occurred in the signal line;
a third display unit that displays at least a result of determining that an abnormality has occurred in the signal line and a current value of the signal line on which the determination result is based;
Equipped with
A door is provided on the housing of the disaster prevention receiving panel so as to be opened and closed by rotating the door around the front of the housing;
the display unit and the second display unit are disposed on a surface of the door that is visible from the front of the housing when the door is closed,
The third display unit is characterized in that it is disposed inside the housing where , when the door is open, there is a case where the third display unit can be viewed from a position where the second display unit and the third display unit cannot be viewed.

(回線表示灯)
表示部は、信号回線の各々に対応して設けられた回線表示灯であり、事象の種類に応じて異なる態様の表示を行う。
(Line indicator light)
The display unit is a line indicator lamp provided corresponding to each signal line, and displays different modes according to the type of event.

(信号回線に生じた異常の種類)
また、表示の対象とする信号回線に生じた異常は、信号回線の障害、又は、信号回線の電流値異常、又は、信号回線の電流値異常及び信号回線の電流値異常の発生が予測される状態である電流値異常の予兆含む。
(Type of abnormality that occurred in the signal line)
In addition, abnormalities that have occurred in the signal lines to be displayed include a fault in the signal line, or an abnormal current value in the signal line, or an abnormal current value in the signal line, or a sign of an abnormal current value which is a state in which an abnormal current value in the signal line is predicted to occur.

(基本的な効果)
本発明は、監視エリアに対応して配置した端末機器から信号回線を介して送信され防災受信盤で受信される所定の信号に基づく監視エリアで発生した異常及び信号回線に生じた異常を含む複数種類の事象に関する表示を行う防災システムに於いて、表示の対象となる事象の種類に応じて異なる態様の表示をする表示部と、表示部により信号回線に所定の異常が生じた状態である旨を表示するときに、当該信号回線に生じた所定の異常に関する内容情報を表示する第2の表示部と、を備えたため、監視エリアで発生した異常及び信号回線線に生じた異常、例えば信号回線の電流値異常、電流値異常の予兆又は障害の場合に、表示部の表示態様を見ることで監視エリアで発生した異常状況に加え、信号回線に生じた異常の何れが起きているかを容易に把握することができ、必要な対処を適切に行うことを可能とする。また、仮に表示部の表示態様と異常内容の関係を忘れた場合や経験の浅い作業者であっても、信号回線に生じた異常の場合には第2の表示部に信号回線に生じた異常に関する内容情報を示す表示がされているため、現在起きている状態を把握できないという事態に陥ることがない。
(Basic Effects)
The present invention is a disaster prevention system that displays a plurality of types of events, including an abnormality occurring in a monitoring area and an abnormality occurring in a signal line, based on a predetermined signal transmitted from a terminal device arranged corresponding to the monitoring area through a signal line and received by a disaster prevention receiving panel, and includes a display unit that displays different modes according to the type of event to be displayed, and a second display unit that displays content information regarding the predetermined abnormality occurring in the signal line when the display unit displays that a predetermined abnormality has occurred in the signal line. Therefore, in the case of an abnormality occurring in the monitoring area and an abnormality occurring in the signal line, for example, a current value abnormality in the signal line, a sign of a current value abnormality, or a fault, it is possible to easily grasp which of the abnormalities occurring in the signal line has occurred in addition to the abnormal situation occurring in the monitoring area by looking at the display mode of the display unit, and to appropriately take necessary measures. Furthermore, even if the relationship between the display mode of the display unit and the abnormality content is forgotten or the worker is inexperienced, in the case of an abnormality occurring in the signal line, the second display unit displays content information regarding the abnormality occurring in the signal line, so that the worker will not be unable to grasp the current situation.

(表示部の配置による効果)
表示部は、信号回線の各々に対応して設けられた回線表示灯であり、事象の種類に応じて異なる態様の表示を行うため、両表示を合わせて容易に把握することができ、必要な対処を適切に行うことを可能とする。
(Effect of display arrangement)
The display unit is a line indicator light provided corresponding to each signal line, and displays different forms depending on the type of event, making it easy to understand both displays together and enabling the necessary measures to be taken appropriately.

トンネル防災システムの概要を示した説明図An explanatory diagram showing the overview of the tunnel disaster prevention system 防災受信盤の外観を示した説明図An explanatory diagram showing the appearance of the disaster prevention receiving panel 防災受信盤のパネル扉を開いてモニタ装置が見える状態を示した説明図An explanatory diagram showing the monitor device when the panel door of the disaster prevention receiving panel is opened. 図2のグラフィックパネルを取り出して示した説明図FIG. 3 is an explanatory diagram showing the graphic panel of FIG. 2 ; 図2の表示パネルを取り出して示した説明図FIG. 3 is an explanatory diagram showing the display panel of FIG. 2 ; トンネル防災システム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 tunnel disaster prevention system 予兆閾値範囲の設定による電流値異常の予兆判定を示したグラフ図A graph showing how to determine whether a current value is abnormal based on the threshold range for predicting the occurrence of an abnormal current value. 平均電流との差による電流値異常の予兆判定を示したグラフ図A graph showing the prediction of abnormal current values based on the difference from the average current 前回測定の電流値との差による電流値異常の予兆判定を示したグラフ図A graph showing the prediction of abnormal current values based on the difference from the previous measurement 警報種別に応じて点滅又は明滅の周波数を変える回線表示灯の動作状態を示したタイムチャートA time chart showing the operation state of a line indicator light that changes the frequency of blinking or flashing depending on the type of alarm. 警報種別に応じて点滅又は明滅のパターンを変える回線表示灯の動作状態を示したタイムチャートA time chart showing the operation state of a line indicator light that changes its blinking or flashing pattern depending on the type of alarm. 定周期測定による測定履歴を表示したモニタ装置の測定記録画面を示した説明図FIG. 13 is an explanatory diagram showing a measurement record screen of a monitor device displaying a measurement history based on periodic measurements. 絞込み条件の設定により抽出された測定履歴が表示されるモニタ装置の測定記録絞込み画面を示した説明図FIG. 13 is an explanatory diagram showing a measurement record filtering screen of a monitor device on which measurement histories extracted by setting filtering conditions are displayed.

[トンネル防災システムの概要]
図1はトンネル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、上り線トンネル1aと下り線トンネル1bは避難連絡坑2でつながっている。
[Outline of tunnel disaster prevention system]
The tunnel disaster prevention system is explained in detail in Fig. 1. As shown in Fig. 1, an up line tunnel 1a and an down line tunnel 1b are constructed as tunnels for a motorway. The up line tunnel 1a and the down line tunnel 1b are connected by an evacuation tunnel 2.

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監視員通路の壁面に沿って例えば50メートル間隔で消火栓装置18が設置されている。 Inside the up-bound tunnel 1a and the down-bound tunnel 1b, fire hydrant devices 18 are installed along the walls of the guard passages in the longitudinal direction of the tunnels, for example at intervals of 50 meters.

消火栓装置18は消火栓扉内にノズル付きホースを収納しており、火災時には消火栓扉を開いてノズル付きホースを引き出し、消火栓弁開閉レバーを開操作すると消火用水が放水され、また、消火栓弁開閉検出スイッチ14がオンして消火ポンプを起動させる。 The fire hydrant device 18 has a hose with a nozzle stored inside the hydrant door. In the event of a fire, the hydrant door is opened to pull out the hose with the nozzle, and when the fire hydrant valve opening/closing lever is opened, water for extinguishing the fire is discharged. In addition, the fire hydrant valve opening/closing detection switch 14 is turned on to start the fire pump.

また、消火栓装置18には通報装置扉を設けており、通報装置扉には手動通報装置(発信機)16が設けられている。このように消火栓装置18には、消火栓弁開閉検出スイッチ14、及び手動通報装置16が端末機器として設けられており、それぞれ接点手段として機能する無電圧a接点スイッチのオンにより、消火栓起動信号及び火災通報信号が出力される。 The fire hydrant device 18 is also provided with a notification device door, and the notification device door is equipped with a manual notification device (transmitter) 16. In this way, the fire hydrant device 18 is provided with a fire hydrant valve open/close detection switch 14 and a manual notification device 16 as terminal devices, and a fire hydrant start signal and a fire notification signal are output when the non-voltage a-contact switch, which functions as a contact means, is turned on.

なお、消火栓装置18には消防隊が使用するポンプ起動スイッチが設けられているが、消火栓弁開閉検出スイッチ14と同じポンプ起動信号を出力するシステム的には同一のスイッチであることから、以下、消火栓弁開閉検出スイッチ(ポンプ起動スイッチを含む)14として説明する。また、手動通報装置16は、消火栓装置18以外に、非常電話ボックス内にも設置しているが、以下の説明では、消火栓装置18に設けた手動通報装置を代表として説明する。 The fire hydrant device 18 is equipped with a pump start switch used by the fire brigade, but because it is the same switch in terms of the system that outputs the same pump start signal as the fire hydrant valve opening/closing detection switch 14, it will be described below as the fire hydrant valve opening/closing detection switch (including the pump start switch) 14. Also, the manual reporting device 16 is installed not only in the fire hydrant device 18 but also in emergency telephone booths, but in the following explanation, the manual reporting device installed in the fire hydrant device 18 will be used as a representative.

トンネル非常設備として、消火栓装置18以外に、火災検知器、自動弁装置、ダクト内温度検知器等が設けられているが、図示を省略している。 In addition to the fire hydrant device 18, the tunnel is also equipped with fire detectors, automatic valve devices, duct temperature detectors, etc. as emergency equipment, but these are not shown in the figure.

火災検知器はトンネル長手方向の壁面に沿って例えば25メートル又は50メートル間隔で設置され、左右25メートル又は50メートルとなる両側に監視エリアを設定し、火災による炎を検出して火災発報する。 Fire detectors are installed along the walls of the tunnel in the longitudinal direction, for example at intervals of 25 or 50 meters, with monitoring areas set on both sides, 25 or 50 meters apart, and a fire alarm is sounded when flames caused by a fire are detected.

自動弁装置は水噴霧設備を構成しており、作動用電動弁の遠隔開制御により主弁を開駆動し、トンネル壁面の上部の長手方向に設置した複数の水噴霧ヘッドから消火用水を放水してトンネル躯体を火災から防護する。 The automatic valve device constitutes a water spray system, and the main valve is opened by remotely controlling the opening of the operating motor valve, and fire-extinguishing water is sprayed from multiple water spray heads installed along the length of the upper part of the tunnel wall to protect the tunnel structure from fire.

ダクト内温度検知器は、トンネル長手方向の監視員通路の内部の配管やケーブルを敷設したダクトに配置されており、ケーブル火災等によるダクト内の温度上昇を検出し、接点手段として機能する無電圧a接点スイッチのオンにより温度検知信号を出力する。 The duct temperature detector is placed in a duct containing pipes and cables inside the guard passage along the length of the tunnel, and detects a rise in temperature inside the duct due to a cable fire, etc., and outputs a temperature detection signal by turning on a non-voltage a-contact switch that functions as a contact means.

上り線トンネル1a及び下り線トンネル1bの監視センター等には防災受信盤10が設置されている。防災受信盤10には、上り線トンネル1a及び下り線トンネル1bの防災監視機能に加え、端末機器を接続したP型の信号回線の電流を監視する電流監視機能が設けられている。 A disaster prevention receiving panel 10 is installed in the monitoring center of the up-line tunnel 1a and the down-line tunnel 1b. In addition to the disaster prevention monitoring function of the up-line tunnel 1a and the down-line tunnel 1b, the disaster prevention receiving panel 10 is provided with a current monitoring function for monitoring the current of the P-type signal line to which the terminal equipment is connected.

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の内に、トンネル長手方向に分割した所定の区画毎にP型の信号回線12-11~12-16,12-21~12-26が引き出され、例えば4台の消火栓装置18で1区画を形成し、区画単位に設けられた複数の消火栓弁開閉検出スイッチ14及び手動通報装置16が接続されている。 From the disaster prevention receiving panel 10, P-type signal lines 12-11 to 12-16, 12-21 to 12-26 are drawn out for each predetermined section divided along the length of the tunnel into the up-line tunnel 1a and the down-line tunnel 1b. For example, one section is formed by four fire hydrant devices 18, and multiple fire hydrant valve opening/closing detection switches 14 and manual reporting devices 16 installed on a section-by-section basis are connected.

なお、ダクト内に設置されたダクト内温度検出器に対しても、同様にP型の信号回線が区画単位に引き出され、区画単位に設けられた複数のダクト内温度検知器が接続されているが、図示を省略している。また、信号回線12-11~12-26は、区別する必要がない場合は、信号回線12という場合がある。 Note that, for the duct temperature detectors installed inside the ducts, P-type signal lines are similarly pulled out on a per-section basis, and multiple duct temperature detectors installed in each section are connected, but this is not shown. Also, signal lines 12-11 to 12-26 may be referred to as signal line 12 when there is no need to distinguish between them.

P型の信号回線12は信号線とコモン線で構成され、消火栓装置18の消火栓弁開閉検出スイッチ14、手動通報装置16及びダクト内温度検知器の各々に設けた無電圧a接点スイッチを接続した場合は、それぞれの操作又は検知動作により無電圧a接点スイッチをオンして回線電流を流すことで、消火栓起動信号、火災通報信号、温度検知信号を防災受信盤10に送るようにしている。 The P-type signal circuit 12 is composed of a signal line and a common line, and when the no-voltage a-contact switches provided on the fire hydrant valve opening/closing detection switch 14 of the fire hydrant device 18, the manual notification device 16, and the duct temperature detector are connected, the no-voltage a-contact switches are turned on by the respective operations or detection actions to allow line current to flow, thereby sending the fire hydrant start signal, fire notification signal, and temperature detection signal to the disaster prevention receiving panel 10.

またトンネルの非常用施設としては、消火栓装置18、火災検知器及び自動弁装置以外に、消火ポンプ設備20、ダクト用の冷却ポンプ設備22、IG子局設備24、換気設備28、警報表示板設備30、ラジオ再放送設備32、テレビ監視設備34及び照明設備36等が設けられており、IG子局設備24をデータ伝送回線で接続する点を除き、それ以外の設備はP型信号回線により防災受信盤10に個別に接続されている。ここで、IG子局設備24は、防災受信盤10と外部に設けた上位設備である遠方監視制御設備26とをネットワーク25を経由して結ぶ通信設備である。 In addition to the fire hydrant equipment 18, fire detectors, and automatic valve equipment, the tunnel's emergency facilities include a fire pump equipment 20, duct cooling pump equipment 22, IG satellite station equipment 24, ventilation equipment 28, warning display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, and lighting equipment 36. Except for the IG satellite station equipment 24, which is connected by a data transmission line, all other equipment is individually connected to the disaster prevention receiving panel 10 by P-type signal lines. Here, the IG satellite station equipment 24 is a communication facility that connects the disaster prevention receiving panel 10 to the remote monitoring and control equipment 26, which is a higher-level facility installed outside, via a network 25.

換気設備28は、トンネル内の天井側に設置しているジェットファンの運転による高い吹き出し風速によってトンネル内の空気にエネルギーを与えて、トンネル長手方向に空気の流れを起こす設備である。 The ventilation equipment 28 is a device that applies energy to the air inside the tunnel by operating a jet fan installed on the ceiling side of the tunnel to blow air at a high speed, creating an air flow in the longitudinal direction of the tunnel.

また、警報表示板設備30は、トンネル内の利用者に対して、トンネル内の異常を、電光表示板に表示して知らせる設備である。ラジオ再放送設備32は、トンネル内で運転者等が道路管理者からの情報を受信できるようにするための設備である。テレビ監視設備34は、火災の規模や位置を確認したり、水噴霧設備の作動、避難誘導を行う場合のトンネル内の状況を把握するための設備である。照明設備36はトンネル内の照明機器を駆動して管理する設備である。 The warning display board equipment 30 is equipment that notifies users inside the tunnel of any abnormalities inside the tunnel by displaying them on an electronic display board. The radio rebroadcast equipment 32 is equipment that enables drivers and others inside the tunnel to receive information from the road administrator. The television monitoring equipment 34 is equipment that is used to confirm the scale and location of a fire, activate the water spray equipment, and grasp the situation inside the tunnel when providing evacuation guidance. The lighting equipment 36 is equipment that drives and manages the lighting equipment inside the tunnel.

[防災受信盤]
図2は防災受信盤の外観を示した説明図であり、図2(A)に正面を示し、図2(B)に側面を示す。図3は防災受信盤のパネル扉を開いてモニタ装置が見える状態を示した説明図である。
[Disaster prevention receiving panel]
Fig. 2 is an explanatory diagram showing the appearance of the disaster prevention receiving panel, Fig. 2(A) shows the front and Fig. 2(B) shows the side. Fig. 3 is an explanatory diagram showing the state in which the panel door of the disaster prevention receiving panel is opened and the monitor device can be seen.

(前面パネルと筐体内のモニタ装置)
図2に示すように、防災受信盤10は、前後に開放された箱形の筐体61の前面に、ハンドル操作により開閉自在なパネル扉62が設けられ、また、筐体61の裏面にも、バンドル操作により開閉自在な裏扉63が設けられている。
(Front panel and monitor unit inside the case)
As shown in FIG. 2, the disaster prevention receiving panel 10 has a box-shaped housing 61 that is open at the front and rear. The front of the housing 61 has a panel door 62 that can be opened and closed by operating a handle. The rear of the housing 61 also has a back door 63 that can be opened and closed by a bundle operation.

パネル扉62の表側には、トンネル系統図に回線表示灯が配置されたグラフィックパネル44、複数の代表灯が配列された表示パネル50、及び各種の操作スイッチと電話機が配置された操作パネル52からなる操作表示部64が設けられる。 On the front side of the panel door 62, there is an operation display section 64 consisting of a graphic panel 44 on which line indicator lights are arranged on a tunnel system diagram, a display panel 50 on which multiple representative lights are arranged, and an operation panel 52 on which various operation switches and telephones are arranged.

筐体61の内部には、タッチパネル付きの液晶ディスプレイを用いたモニタ装置46が配置されている。図3に示すように、防災受信盤10のパネル扉62を開くと、筐体61内に支持枠68に配置されているモニタ装置46が現れ、モニタ装置46の画面に信号回線の電流値測定結果や判定結果を含む電流値の測定履歴を表示させることができる。 A monitor device 46 using a liquid crystal display with a touch panel is disposed inside the housing 61. As shown in FIG. 3, when the panel door 62 of the disaster prevention receiving panel 10 is opened, the monitor device 46 disposed on a support frame 68 inside the housing 61 appears, and the signal line current value measurement results and the measurement history of the current value including the judgment results can be displayed on the screen of the monitor device 46.

(グラフィックパネル)
図4は図2のグラフィックパネルを取り出して示した説明図である。図4に示すように、グラフィックパネル44の中央上部には火災代表灯100が設けられ、その下のトンネル名に続いて、トンネル系統図として、上り線トンネル系統図102aと下り線トンネル系統図102bが描かれている。
(Graphics Panel)
Fig. 4 is an explanatory diagram showing the graphic panel of Fig. 2. As shown in Fig. 4, a fire representative light 100 is provided at the top center of the graphic panel 44, and below that, following the tunnel name, an up line tunnel system diagram 102a and a down line tunnel system diagram 102b are drawn as tunnel system diagrams.

上り線トンネル系統図102aは、消火栓配置部104、手動通報装置配置部106及び消火栓起動装置配置部108の3段に分けられている。消火栓配置部104には、トンネル長手方向に50メートル間隔で配置された例えば消火栓装置を示す矩形のシンボルが配列されている。 The up-bound tunnel system diagram 102a is divided into three sections: a fire hydrant arrangement section 104, a manual reporting device arrangement section 106, and a fire hydrant activation device arrangement section 108. The fire hydrant arrangement section 104 has an array of rectangular symbols representing, for example, fire hydrant devices arranged at 50-meter intervals along the length of the tunnel.

手動通報装置配置部106は、P型の信号回線に対応して6区画に分けられており、各区画には「1~6」の区画番号(回線番号に対応)が表記され、また、各区画に回線表示灯110が設けられている。消火栓起動装置配置部108も同様に、P型の信号回線に対応して6区画に分けられており、各区画には「1~6」の区画番号が表記され、また、各区画に回線表示灯112が設けられている。なお、消火栓配置部104、手動通報装置配置部106及び消火栓起動装置配置部108は下り線トンネル系統図102bについても同様になる。 The manual reporting device placement section 106 is divided into six sections corresponding to the P-type signal circuits, each section is marked with a section number "1 to 6" (corresponding to the circuit number), and each section is provided with a circuit indicator light 110. The fire hydrant activation device placement section 108 is similarly divided into six sections corresponding to the P-type signal circuits, each section is marked with a section number "1 to 6", and each section is provided with a circuit indicator light 112. The fire hydrant placement section 104, manual reporting device placement section 106, and fire hydrant activation device placement section 108 are the same for the outbound tunnel system diagram 102b.

グラフィックパネル44に設けられた回線表示灯110,112は、対応する信号回線の火災、断線障害、電流値異常、又は、電流値異常の予兆が判定された場合に、判定内容が分かるように、異なった表示状態で表示される。 The line indicator lights 110, 112 provided on the graphic panel 44 are displayed in different states when a fire, disconnection, current value abnormality, or a sign of a current value abnormality is detected in the corresponding signal line, so that the detected content can be understood.

(表示パネル)
図5は図2の表示パネルを取り出して示した説明図である。図5に示すように、表示パネル50には、防災監視に必要な各種の表示灯が配列されており、防災受信盤10に設けられた断線監視機能に対応して手動通報回線断線灯120と消火栓回線断線点灯124が設けられる。また、防災受信盤10に設けられた電流監視機能に対応して、電流監視装置測定中灯124、電流監視装置故障灯126、手動通報電流値異常灯128、手動通報電流値異常予兆灯130、消火栓電流値異常灯132及び消火栓電流値異常予兆灯134が設けられる。これらの表示灯はそれぞれの事象が判定された場合に、所定の表示色により点灯又は点滅される。
(Display panel)
Fig. 5 is an explanatory diagram showing the display panel of Fig. 2. As shown in Fig. 5, various indicator lights necessary for disaster prevention monitoring are arranged on the display panel 50, and a manual report line disconnection light 120 and a fire hydrant line disconnection light 124 are provided in correspondence with the disconnection monitoring function provided in the disaster prevention receiving panel 10. In addition, a current monitoring device measurement light 124, a current monitoring device failure light 126, a manual report current value abnormality light 128, a manual report current value abnormality prediction light 130, a fire hydrant current value abnormality light 132, and a fire hydrant current value abnormality prediction light 134 are provided in correspondence with the current monitoring function provided in the disaster prevention receiving panel 10. These indicator lights are lit or flashed in a predetermined display color when each event is determined.

[防災受信盤の構成]
図6はトンネル防災システムの機能構成の概略を示したブロック図である。図6に示すように、防災受信盤10は制御部40を備え、制御部40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、AD変換ポートを含む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。
[Configuration of the disaster prevention receiving panel]
Fig. 6 is a block diagram showing an outline of the functional configuration of the tunnel disaster prevention system. As shown in Fig. 6, the disaster prevention receiving panel 10 includes a control unit 40, which is a function realized by, for example, executing a program, and uses, as hardware, a computer circuit or the like equipped with a CPU, memory, various input/output ports including an AD conversion port, and the like.

制御部40に対しては、トンネル内に設置した各種の端末機器をP型の信号回線12により接続したP型伝送部42が設けられ、また、制御部40に対し、グラフィックパネル44、モニタ装置46、スピーカ、ブザー、警報表示灯等を備えた警報部48、各種表示灯を備えた表示パネル50、各種スイッチを備えた操作パネル52を設け、更に、IG子局設備24、換気設備28、警報表示板設備30、ラジオ再放送設備32、テレビ監視設備34、照明設備36、消火ポンプ設備20及び冷却ポンプ設備22をP型の信号回線により個別に接続したP型伝送部54が設けられている。 The control unit 40 is provided with a P-type transmission unit 42 that connects various terminal devices installed in the tunnel with P-type signal lines 12. The control unit 40 is also provided with a graphic panel 44, a monitor device 46, an alarm unit 48 equipped with a speaker, buzzer, alarm indicator lights, etc., a display panel 50 equipped with various indicator lights, and an operation panel 52 equipped with various switches. In addition, a P-type transmission unit 54 is provided that individually connects the IG child station equipment 24, ventilation equipment 28, alarm display board equipment 30, radio rebroadcast equipment 32, television monitoring equipment 34, lighting equipment 36, fire pump equipment 20, and cooling pump equipment 22 with P-type signal lines.

制御部40にはプログラムの実行により実現される機能として、監視制御部56、電流監視部58及び警報表示制御部60の機能が設けられている。 The control unit 40 has the functions of a monitoring control unit 56, a current monitoring unit 58, and an alarm display control unit 60, which are functions realized by executing a program.

(監視制御部)
監視制御部56はトンネル内に設置した消火栓装置18に設けられた消火栓弁開閉検出スイッチ14と手動通報装置16、火災検知器、ダクト内温度検知器、及び自動弁装置等の端末機器からの検知信号や操作信号に基づき、所定の監視制御を行う。
(Monitoring and control unit)
The monitoring and control unit 56 performs predetermined monitoring and control based on detection signals and operation signals from terminal devices such as the fire hydrant valve opening/closing detection switch 14 and manual reporting device 16 provided on the fire hydrant device 18 installed in the tunnel, a fire detector, a duct temperature detector, and an automatic valve device.

また、監視制御部56は、例えば消火栓装置18に設けた手動通報装置16の操作による火災通報信号(火災信号)を受信した場合、警報部48により主音響鳴動を行うと共に図4に示したグラフィックパネル44の火災代表灯100を点滅して火災代表表示を行い、また、火災通報信号を受信した信号回線に対応した手動通報装置配置部106の回線表示灯110を点灯して手動通報区画表示を行い、また消火栓装置18に応答信号を送信して応答ランプを点灯させる制御を行う。 In addition, when the monitoring control unit 56 receives a fire notification signal (fire signal) by operating the manual notification device 16 provided in the fire hydrant device 18, for example, it causes the alarm unit 48 to sound the main sound and flashes the fire representative light 100 on the graphic panel 44 shown in Figure 4 to display the fire representative, and also turns on the line indicator light 110 on the manual notification device placement unit 106 corresponding to the signal line that received the fire notification signal to display the manual notification section, and also transmits a response signal to the fire hydrant device 18 to control the lighting of the response lamp.

また、監視制御部56は、火災通報信号の受信に続いて、消火栓装置に設けられた消火栓弁開閉レバーの操作に伴う消火栓弁開閉検出スイッチ14のオンによる消火栓起動信号を受信した場合、図4に示したグラフィックパネル44の消火栓起動信号を受信した信号回線に対応した消火栓起動装置配置部108の回線表示灯112を点灯して消火栓起動区画表示を行う。 Furthermore, when the monitoring control unit 56 receives a fire hydrant activation signal by turning on the fire hydrant valve opening/closing detection switch 14 in response to the operation of the fire hydrant valve opening/closing lever provided on the fire hydrant device following the reception of the fire notification signal, it turns on the line indicator light 112 of the fire hydrant activation device placement unit 108 corresponding to the signal line that received the fire hydrant activation signal on the graphic panel 44 shown in FIG. 4 to display the fire hydrant activation area.

また、監視制御部56は、消火栓装置18に設けられた消火栓弁開閉レバーの開操作により消火栓弁開閉検出スイッチ14のオンで出力された消火栓起動信号を受信した場合、消火ポンプ設備20にポンプ起動信号を送信して起動させる制御を行う。 In addition, when the monitoring control unit 56 receives a fire hydrant start signal output by turning on the fire hydrant valve opening/closing detection switch 14 through the opening operation of the fire hydrant valve opening/closing lever provided on the fire hydrant device 18, it transmits a pump start signal to the fire pump equipment 20 to control it to start up.

更に、監視制御部56は、火災通報信号の受信に基づく他設備に対する制御として、IG子局設備24を介して遠方監視制御設備26に火災通報信号を送信して警報させる制御、テレビ監視設備34により手動通報区画を表示する制御、警報表示板設備30により手動通報区画の火災通報を表示する制御、換気設備28により手動通報区画を換気する制御、照明設備36により手動通報区画を照明する制御等を行う。 Furthermore, the monitoring control unit 56 performs controls over other equipment based on the reception of a fire notification signal, such as control over sending a fire notification signal to the remote monitoring and control equipment 26 via the IG slave station equipment 24 to issue an alarm, control over displaying the manual notification area via the television monitoring equipment 34, control over displaying a fire notification in the manual notification area via the alarm display board equipment 30, control over ventilating the manual notification area via the ventilation equipment 28, and control over illuminating the manual notification area via the lighting equipment 36.

また、監視制御部56は、ダクト内温度が上昇してダクト内温度検知器から温度検知信号を受信した場合、冷却ポンプ設備22にポンプ起動信号を出力し、ダクト内に設置したヘッドから散水してダクト内を冷却する制御を行う。 In addition, when the temperature inside the duct rises and a temperature detection signal is received from the duct temperature detector, the monitoring and control unit 56 outputs a pump start signal to the cooling pump equipment 22 and controls the spraying of water from a head installed inside the duct to cool the inside of the duct.

また、監視制御部56は、信号回線12の断線障害を監視しており、手動通報装置16に対する信号回線12-21~12-26の断線障害を検出すると、警報部48により障害音響鳴動を行うと共に図5に示した表示パネル50の手動通報回線断線灯120を例えば黄色点灯し、また、消火栓弁開閉検出スイッチ14に対する信号回線12-11~12-16の断線障害を検出すると、警報部48により障害音響鳴動を行うと共に図5に示した表示パネル50の消火栓回線断線灯122を例えば黄色点灯する制御を行う。 The monitoring and control unit 56 also monitors for disconnection faults in the signal line 12. When it detects a disconnection fault in the signal lines 12-21 to 12-26 for the manual reporting device 16, it causes the alarm unit 48 to sound an audible fault and turns on the manual reporting line disconnection lamp 120 on the display panel 50 shown in FIG. 5, for example, in yellow. When it detects a disconnection fault in the signal lines 12-11 to 12-16 for the fire hydrant valve open/close detection switch 14, it causes the alarm unit 48 to sound an audible fault and controls the fire hydrant line disconnection lamp 122 on the display panel 50 shown in FIG. 5, for example, to turn on in yellow.

監視制御部56による信号回線12の断線障害の監視は、信号回線12の終端に終端抵抗を接続して断線監視電流を流しており、断線監視電流が断たれた場合に断線障害を検出する。 The monitoring control unit 56 monitors the signal line 12 for a disconnection fault by connecting a termination resistor to the end of the signal line 12 and passing a disconnection monitoring current, and detects a disconnection fault when the disconnection monitoring current is interrupted.

(電流監視部)
電流監視部58は、消火栓弁開閉検出スイッチ14及び手動通報装置16を含む無電圧a接点スイッチを備えた端末機器を接続した信号回線12の電流値を測定し、測定した電流値が所定の上限値と下限値で決まる閾値範囲を外れた場合に電流値異常を判定し、測定結果を測定履歴として着脱自在なメモリカードを用いたメモリに記憶する制御を行う。
(Current monitoring unit)
The current monitoring unit 58 measures the current value of the signal line 12 to which a terminal device equipped with a non-voltage a-contact switch including the fire hydrant valve opening/closing detection switch 14 and the manual reporting device 16 is connected, and if the measured current value falls outside a threshold range determined by predetermined upper and lower limits, it determines that the current value is abnormal, and controls the storage of the measurement results as measurement history in a memory using a removable memory card.

電流監視部58による信号回線12の電流値の測定は、例えば、信号回線12に挿入した電流検出抵抗の検出電圧をAD変換して読み込み、ノイズの影響を除去するため、所定時間測定した電流値の平均値を求める。 The current monitoring unit 58 measures the current value of the signal line 12, for example, by reading the detection voltage of a current detection resistor inserted in the signal line 12 through AD conversion, and then calculating the average current value measured over a specified period of time to eliminate the effects of noise.

ここで、電流監視部58による電流値測定には、定周期測定、自動測定、手動測定がある。電流監視部58の定周期測定は、所定周期毎、例えば1日1回の周期で全ての信号回線12の電流値を順次測定し、測定した電流値が所定の閾値範囲を外れた場合に電流値異常を判定し、測定結果を測定履歴としてメモリに記憶させる制御を行う。 Here, the current value measurement by the current monitoring unit 58 includes fixed-period measurement, automatic measurement, and manual measurement. Fixed-period measurement by the current monitoring unit 58 measures the current values of all signal lines 12 sequentially at a predetermined cycle, for example, once a day, and determines that the current value is abnormal if the measured current value falls outside a predetermined threshold range, and controls the measurement results to be stored in memory as a measurement history.

電流監視部58による電流値の自動測定は、モニタ装置46による自動測定操作を検出した場合に、全ての信号回線12に流れる電流値を順次測定し、測定した電流値が所定の閾値範囲を外れた場合に電流値異常を判定し、測定結果をモニタ装置46に画面表示させる制御を行う。 When the automatic measurement operation by the monitor device 46 is detected, the current monitoring unit 58 measures the current values flowing through all signal lines 12 in sequence, and if the measured current value falls outside a predetermined threshold range, it determines that the current value is abnormal and controls the monitor device 46 to display the measurement result on its screen.

電流監視部58による電流値の手動測定は、モニタ装置46による信号回線の選択を含む手動測定操作を検出した場合に、選択された信号回線に流れる電流値を測定し、測定した電流値が所定の閾値範囲を外れた場合に電流値異常を判定し、測定結果をモニタ装置46に画面表示させる制御を行う。 When the current monitoring unit 58 detects a manual measurement operation, including the selection of a signal line by the monitor device 46, it measures the current value flowing through the selected signal line, and if the measured current value falls outside a predetermined threshold range, it determines that the current value is abnormal and controls the monitor device 46 to display the measurement result on its screen.

また、電流監視部58は、モニタ装置46による測定履歴表示操作を検出した場合、メモリに記憶されている電流値の測定履歴をモニタ装置46に画面表示させる制御を行う。 In addition, when the current monitoring unit 58 detects an operation to display the measurement history by the monitor device 46, it controls the monitor device 46 to display the measurement history of the current value stored in the memory on the screen.

電流監視部58は、定周期測定、自動測定又は手動測定の測定中は、図5に示した表示パネル50の中の電流監視装置測定中灯124を緑色点灯し、また、定周期測定、自動測定又は手動測定により電流値異常が判定された場合、図5に示した表示パネル50の中の手動通報電流値異常灯128又は消火栓電流値異常灯132を黄色点灯させて代表表示させる制御を行う。 The current monitoring unit 58 controls the current monitoring device measurement lamp 124 in the display panel 50 shown in FIG. 5 to light green during periodic, automatic, or manual measurement, and when a current value abnormality is determined by periodic, automatic, or manual measurement, controls the manual report current value abnormality lamp 128 or fire hydrant current value abnormality lamp 132 in the display panel 50 shown in FIG. 5 to light yellow to provide a representative display.

また、電流監視部58は、モニタ装置46による異常履歴表示操作を検出した場合、メモリに記憶されている電流値の測定履歴から電流値異常が判定されている測定履歴を抽出してモニタ装置46に時系列的に画面表示させる制御を行う。 In addition, when the current monitoring unit 58 detects an operation to display the abnormality history by the monitor device 46, it extracts the measurement history in which the current value has been determined to be abnormal from the measurement history of the current value stored in the memory, and controls the monitor device 46 to display the measurement history in chronological order on the screen.

[電流監視部による電流値異常の予兆警報]
防災受信盤10の制御部40に設けられ電流監視部58は、測定された電流値が電流値異常を判定する所定の閾値範囲内で所定の予兆閾値を超えた場合に、電流値異常の予兆を判定して予兆警報を出力させる制御を行う。
[Current value abnormality warning by current monitoring unit]
The current monitoring unit 58, provided in the control unit 40 of the disaster prevention receiving panel 10, determines the presence of an abnormal current value and outputs an abnormal current value warning when the measured current value exceeds a predetermined precursor threshold within a predetermined threshold range for determining an abnormal current value.

電流監視部58による電流値異常の予兆警報は、グラフィックパネル44の画面に電流値異常の予兆警報を代表表示させると共にモニタ装置46の画面に電流値異常の予兆警報の詳細情報として、測定結果と共に上り線トンネルか下り線トンネルかを示す系統、予兆警報に対象となった消火栓や手動通報装置等の装置名を表示させる。 When the current monitoring unit 58 issues a warning of an abnormal current value, a representative warning of an abnormal current value is displayed on the screen of the graphic panel 44, and detailed information of the warning of an abnormal current value is displayed on the screen of the monitor device 46, including the measurement results, the system indicating whether it is an up-line tunnel or a down-line tunnel, and the name of the device, such as a fire hydrant or manual reporting device, that is the subject of the warning.

ここで、電流監視部58による電流値異常の予兆判定は例えば
(1)予兆閾値範囲の設定による電流値異常の予兆判定、
(2)平均電流との差による電流値異常の予兆判定、
(3)前回測定の電流値との差による電流値異常の予兆判定、
があり、何れか1つ又は複数の組み合わせにより電流異常値の予兆を判定して予兆警報を出力させる。
Here, the current monitoring unit 58 may perform, for example, (1) determining whether or not a current value abnormality is present by setting a threshold range for determining whether or not a current value abnormality is present;
(2) Determining signs of current abnormalities based on the difference from the average current;
(3) Determining a current value abnormality based on the difference from the previous current value measurement;
A sign of an abnormal current value is determined based on one or a combination of a plurality of these, and a sign warning is output.

(予兆閾値範囲の設定による電流値異常の予兆判定)
図7は予兆閾値範囲の設定による電流値異常の予兆判定を示したグラフ図である。図7は例えば現在日(1日)からそれ以前の18日前までの定周期測定で得られた測定履歴の電流値の日変化を示している。このような電流値の測定履歴に対し、電流値異常を判定するための下限値Ith1と上限値Ith4が設定され、また、電流値異常を判定する閾値範囲Ith1~Ith4の範囲内に、電流値異常の予兆を判定するための予兆下限値Ith2と予兆上限値Ith3が設定されている。
(Determining Predictors of Current Abnormalities by Setting Predictor Threshold Range)
Fig. 7 is a graph showing the prediction of a current value anomaly according to the setting of the prediction threshold range. Fig. 7 shows the daily change in the current value in the measurement history obtained by periodic measurement from the current day (the 1st) to the previous 18 days, for example. For such a measurement history of the current value, a lower limit value Ith1 and an upper limit value Ith4 are set for determining the current value anomaly, and a prediction lower limit value Ith2 and a prediction upper limit value Ith3 are set within the threshold range Ith1 to Ith4 for determining the current value anomaly, for determining the current value anomaly.

電流監視部58は、図7に示すように、電流値異常を判定する閾値範囲Ith1~Ith4内に、それより狭い予兆閾値範囲Ith2~Ith3を設定し、測定された電流値Iiが予兆閾値範囲Ith2~Ith3を外れた場合、即ち、
Ith2≧Ii>Ith1又はIth4>Ii≧Ith3
となった場合に、電流値異常の予兆を判定して予兆警報を出力させる制御を行う。
As shown in FIG. 7, the current monitoring unit 58 sets a narrower predictive threshold range Ith2 to Ith3 within the threshold range Ith1 to Ith4 for determining a current value anomaly, and when the measured current value Ii falls outside the predictive threshold range Ith2 to Ith3, that is,
Ith2 ≧ Ii > Ith1 or Ith4 > Ii ≧ Ith3
When this occurs, a warning is issued to determine whether there is a current value abnormality.

図7にあっては、現在日(1日目)の定周期測定により測定された電流値Iiは予兆上限Ith3に達しており、このため電流監視部58は測定された電流値について、電流値異常の予兆を判定して予兆警報を出力させる。 In FIG. 7, the current value Ii measured by the periodic measurement on the current day (first day) has reached the upper warning level Ith3, so the current monitoring unit 58 determines whether the measured current value is a warning of an abnormal current value and outputs a warning alert.

また、電流監視部58は、定周期測定、自動測定又は手動測定において電流値異常の予兆が判定された場合、図5に示した表示パネル50の中の手動通報電流値異常予兆灯130又は消火栓電流値異常予兆灯134を黄色点灯させて代表表示させる制御を行う。 In addition, when a sign of an abnormal current value is detected during periodic measurement, automatic measurement, or manual measurement, the current monitoring unit 58 controls the manual report current value abnormality warning lamp 130 or the fire hydrant current value abnormality warning lamp 134 in the display panel 50 shown in FIG. 5 to light up in yellow to provide a representative display.

(平均電流との差による電流値異常の予兆判定)
図8は平均電流との差による電流値異常の予兆判定を示したグラフ図である。図8に示すように、電流監視部58は、測定履歴から過去の平均電流値Iaを求め、現在日(1日目)の定周期測定により測定された電流値Iiが電流値異常を判定する閾値範囲Ith1~Ith4の範囲内にあることを条件に、測定された電流値Iiと平均電流値Iaとの差ΔIが所定の予兆閾値ΔIthを超えた場合に、電流値異常の予兆を判定して予兆警報を出力させる制御を行う。
(Determining abnormal current values based on the difference from the average current)
Fig. 8 is a graph showing the prediction of a current value abnormality based on the difference from the average current. As shown in Fig. 8, the current monitoring unit 58 obtains a past average current value Ia from the measurement history, and performs control to determine a prediction of a current value abnormality and output a prediction warning when the difference ΔI between the measured current value Ii and the average current value Ia exceeds a predetermined prediction threshold ΔIth, provided that the current value Ii measured by periodic measurement on the current day (first day) is within the threshold range Ith1 to Ith4 for determining a current value abnormality.

図8にあっては、現在日(1日目)の定周期測定により測定された電流値Iiと平均電流値Iaとの差ΔIが予兆閾値ΔIth以上となっており、このため電流監視部58は測定された電流値について、電流値異常の予兆を判定して予兆警報を出力させる。 In FIG. 8, the difference ΔI between the current value Ii measured by periodic measurement on the current day (first day) and the average current value Ia is equal to or greater than the predictive threshold ΔIth, so the current monitoring unit 58 determines whether the measured current value is a predictive current value anomaly and outputs a predictive warning.

(前回測定の電流値との差による電流値異常の予兆判定)
図9は前回測定の電流値との差による電流値異常の予兆判定を示したグラフ図である。図9に示すように、電流監視部58は、現在日(1日目)の定周期測定により測定された電流値Iiが電流値異常を判定する閾値範囲Ith1~Ith4の範囲内にあることを条件に、前回測定された電流値Ii-1との差ΔIが所定の予兆閾値ΔIthを超えた場合に、電流値異常の予兆を判定して予兆警報を出力させる制御を行う。ここで、電流監視部58により求める今回測定された電流値Iiと前回測定された電流値Ii-1との差ΔIは、電流値の変化率を示しており、これは電流値の変化率が所定の閾値以上となった場合に電流値以上の予兆を判定して警報することを意味する。
(Determining abnormal current value based on the difference from the previous current measurement)
9 is a graph showing a current value abnormality prediction based on the difference from the previous measured current value. As shown in FIG. 9, the current monitoring unit 58 performs control to determine a current value abnormality prediction and output a prediction warning when the difference ΔI between the current value Ii measured this time and the current value Ii-1 measured last time exceeds a predetermined prediction threshold ΔIth, on the condition that the current value Ii measured by the periodic measurement on the current day (first day) is within the threshold range Ith1 to Ith4 for determining a current value abnormality. Here, the difference ΔI between the current value Ii measured this time and the current value Ii-1 measured last time, which is obtained by the current monitoring unit 58, indicates the rate of change of the current value, which means that a prediction of a current value above a predetermined threshold is determined and a warning is issued when the rate of change of the current value becomes equal to or greater than a predetermined threshold.

(警報表示制御部)
図6の防災受信盤10の制御部40に設けられた警報表示制御部60は、図4のグラフィックパネル44に設けられた回線表示灯110,112を、監視制御部56による火災警報と断線障害警報、及び電流監視部58による電流値異常警報と電流値異常の予兆警報に応じて異なる表示状態で作動させる制御を行う。
(Alarm display control unit)
The alarm display control unit 60 provided in the control unit 40 of the disaster prevention receiving panel 10 in Figure 6 controls the line indicator lights 110, 112 provided on the graphic panel 44 in Figure 4 to operate in different display states depending on the fire alarm and disconnection fault alarm from the monitoring control unit 56, and the abnormal current value alarm and precursor alarm of abnormal current value from the current monitoring unit 58.

警報表示制御部60による回線表示灯の制御は、
(1)点滅又は明滅の周波数による警報識別表示
(2)表示色による警報識別表示、
(3)点滅又は明滅のパターンによる警報識別表示
の何れかとする。
The control of the line indicator lamp by the alarm display control unit 60 is as follows:
(1) Alarm identification display by flashing or blinking frequency; (2) Alarm identification display by display color;
(3) The alarm shall be identified by a flashing or blinking pattern.

(点滅又は明滅の周波数による警報識別表示)
図10は警報種別に応じて点滅又は明滅の周波数を変える回線表示灯の動作状態を示したタイムチャートである。
(Alarm identification display by flashing or blinking frequency)
FIG. 10 is a time chart showing the operating state of a line indicator lamp which changes the frequency of blinking or flashing depending on the type of alarm.

図10(A)は火災警報に対する回線表示灯の作動であり、火災通報信号の受信に基づき、回線表示灯を常時点灯としている。 Figure 10 (A) shows the operation of the line indicator light in response to a fire alarm, and the line indicator light is kept on when a fire report signal is received.

図10(B)は断線障害警報に対応した回線表示灯の作動であり、1秒に1回となる1Hzの周波数で点滅又は明滅させる。 Figure 10 (B) shows the operation of the line indicator light in response to a disconnection fault alarm, which flashes or blinks at a frequency of 1 Hz, once per second.

図10(C)は電流値異常警報に対応した回線表示灯の作動であり、1秒に2回となる2Hzの周波数で点滅又は明滅させる。 Figure 10 (C) shows the operation of the line indicator light in response to an abnormal current value alarm, which flashes or blinks at a frequency of 2 Hz, twice per second.

図10(D)は電流値異常の予兆警報に対応した回線表示灯の作動であり、1秒に3回となる3Hzの周波数で点滅又は明滅させる。なお、点滅又は明滅の周波数は一例であり、必要に応じて適宜の識別可能に周波数の組み合わせとしても良い。 Figure 10 (D) shows the operation of the line indicator lamp in response to a warning of an abnormal current value, where the lamp flashes or blinks at a frequency of 3 Hz, which is three times per second. Note that the frequency of the flashing or blinking is only an example, and a combination of frequencies may be used as necessary to make the lamp identifiable.

(表示色による識別表示)
警報表示制御部60は、回線表示灯を、火災警報で赤色、障害警報で黄色、電流値異常警報で橙及び電流値異常の予兆警報で紫というように、警報の種別に応じて異なる表示色で作動させる制御を行う。なお、表示色の組み合わせは、これ以外に適宜に定めることができる。
(Identification by color)
The alarm display control unit 60 controls the line indicator lamp to operate in different display colors according to the type of alarm, such as red for a fire alarm, yellow for a fault alarm, orange for a current value abnormality alarm, and purple for a current value abnormality precursor alarm. Note that the combination of display colors can be determined appropriately other than those mentioned above.

(点滅又は明滅のパターンによる警報識別表示)
図11は警報種別に応じて点滅又は明滅のパターンを変える回線表示灯の動作状態を示したタイムチャートである。
(Alarm identification display by flashing or blinking pattern)
FIG. 11 is a time chart showing the operating state of a line indicator lamp which changes its blinking or flashing pattern depending on the type of alarm.

図11(A)は火災警報に対する回線表示灯の作動であり、回線表示灯を長点灯1回と短点灯3回のパターンを繰り返している。 Figure 11 (A) shows the operation of the line indicator light in response to a fire alarm, with the line indicator light flashing once for a long period and three times for a short period, repeating this pattern.

図11(B)は断線障害警報に対応した回線表示灯の作動であり、回線表示灯を点灯1回と短点灯1回のパターンを繰り返している。 Figure 11 (B) shows the operation of the line indicator light in response to a disconnection fault alarm, with the line indicator light repeatedly flashing once and briefly.

図11(C)は電流値異常警報に対応した回線表示灯の作動であり、回線表示灯を短点灯3回を休止期間を介して繰り返すパターンとしている。 Figure 11 (C) shows the operation of the line indicator light in response to an abnormal current value alarm, with the line indicator light flashing three times briefly, with a pause between each flash, repeated.

図11(D)は電流値異常の予兆警報に対応した回線表示灯の作動であり、回線表示灯を短点灯1回と短点灯2回を休止期間を介して繰り返すパターンとしている。 Figure 11 (D) shows the operation of the line indicator light in response to a warning of an abnormal current value, with the line indicator light flashing once and then flashing twice in a repeated pattern with a pause between each.

なお、これらのパターンは一例であり、必要に応じて適宜の異なる点滅パターン又は明滅パターンの組み合わせとしても良い。 Note that these patterns are just examples, and different flashing or blinking patterns may be combined as needed.

(モニタ装置による測定記録画面の表示)
図12は定周期測定による測定履歴を表示したモニタ装置の測定記録画面を示した説明図であり、電流監視部58により電流値異常の予兆が判定されて予兆警報が出力された場合を例にとって示している。
(Display of measurement record screen on monitor device)
FIG. 12 is an explanatory diagram showing the measurement record screen of a monitoring device that displays the measurement history based on periodic measurements, and shows an example in which the current monitoring unit 58 detects a sign of an abnormal current value and outputs a sign warning.

図12に示すように、図5の表示パネル50で例えば手動通報電流値異常灯128及び手動通報電流値異常予兆点灯130が黄色点灯して電流値異常及びその予兆警報の代表表示が行われた場合、図3に示したように、パネル扉62を開いてモニタ装置46のモニタ画面70で所定の画面操作を行うと、定周期測定により測定して記憶された測定履歴の読み出しにより測定記録画面72が表示される。 As shown in FIG. 12, when the manual report current value abnormality lamp 128 and the manual report current value abnormality warning lamp 130 are lit in yellow on the display panel 50 in FIG. 5 to display a representative current value abnormality and its warning warning, as shown in FIG. 3, by opening the panel door 62 and performing a predetermined screen operation on the monitor screen 70 of the monitor device 46, the measurement record screen 72 is displayed by reading out the measurement history measured and stored by periodic measurement.

測定記録画面72の右側には、ページ表示73、ページ切替ボタン74,75、ファイル保存ボタン76及びメモリ取出ボタン77が配置される。 On the right side of the measurement record screen 72 are a page display 73, page switching buttons 74 and 75, a file save button 76, and a memory removal button 77.

ページ切替ボタン74,75を操作することで測定履歴詳細情報79のページ切替えを可能としている。ファイル保存ボタン76は測定結果のメモリ格納を指示する。メモリ取出ボタン77は防災受信盤10から電流値測定情報を記憶したメモリを取り出す場合に操作する。 The page of the detailed measurement history information 79 can be switched by operating the page switching buttons 74 and 75. The file save button 76 instructs the measurement results to be stored in memory. The memory removal button 77 is operated when removing the memory that stores the current value measurement information from the disaster prevention receiving panel 10.

測定記録画面72の画面中央に表示された測定履歴詳細情報79は、前記(1)の予兆閾値範囲の設定による電流値異常の予兆判定を例にとっている。ここで、回線番号002にあっては、測定値が0.75mAであり、予兆上限値0.75mAに達していることから、予兆判定には「NG」の表示により電流値異常の予兆が示されている。 The detailed measurement history information 79 displayed in the center of the measurement record screen 72 shows an example of a current value abnormality prediction based on the prediction threshold range setting in (1) above. Here, for line number 002, the measured value is 0.75 mA, which reaches the prediction upper limit of 0.75 mA, so the prediction result shows "NG" indicating a current value abnormality.

また、回線番号004にあっては、測定値が1.25mAであり、異常上限値1.00mAを超えていることから、異常判定には「NG」の表示により電流値異常が示されている。この場合、測定値1.25mAは予兆上限値0.75mAも超えていることから、当然に、予兆判定には「NG」の表示により予兆が示されている。 For line number 004, the measured value is 1.25 mA, which exceeds the upper abnormal limit of 1.00 mA, so the abnormality judgment displays "NG" to indicate an abnormal current value. In this case, the measured value of 1.25 mA also exceeds the upper warning limit of 0.75 mA, so naturally the warning judgment displays "NG" to indicate a warning.

測定記録画面72の下側には、回線選択ボタン78が配置され、回線選択ボタン78を操作すると、図13に示す測定記録絞込み画面80の表示に切り替えられる。 A line selection button 78 is located below the measurement record screen 72, and operating the line selection button 78 switches the display to the measurement record narrowing down screen 80 shown in FIG. 13.

図13の測定記録絞込み画面80には、系統選択部81、装置選択部82、区画選択部83、確定ボタン84、解除ボタン85、ページ表示86、ページ切替ボタン87,88、及び閉鎖ボタン89が設けられている。 The measurement record filtering screen 80 in FIG. 13 includes a system selection section 81, a device selection section 82, a section selection section 83, a confirm button 84, a cancel button 85, a page display 86, page switching buttons 87 and 88, and a close button 89.

系統選択部81は上り線と下り線から選択する。装置選択部82は、手動通報、消火栓、ダクトから選択する。区画選択部83は区画番号を入力する。 The system selection unit 81 selects between the upstream line and the downstream line. The device selection unit 82 selects between manual notification, fire hydrant, and duct. The section selection unit 83 inputs the section number.

測定記録絞込み画面80において、例えば「上り線の手動通報装置における区画01」の測定記録に絞込みたい場合には、図示のように、系統選択部81に「上り線」、装置選択部82に「手動通報」、区画選択部83に「01」を設定し、確定ボタン84を操作すると、対応する絞込み測定記録90が表示される。 On the measurement record narrowing screen 80, if you want to narrow down the measurement records to "section 01 on the manual reporting device of the up line," for example, set "up line" in the system selection section 81, "manual reporting" in the device selection section 82, and "01" in the section selection section 83, as shown in the figure, and then operate the confirm button 84, and the corresponding narrowed down measurement record 90 will be displayed.

この状態で解除ボタン85を操作すると、絞込み条件及び絞込み測定記録90がクリアされる。また、閉鎖ボタン89を操作すると、図12の測定記録画面72に戻る。 In this state, pressing the release button 85 will clear the refinement conditions and refinement measurement record 90. Pressing the close button 89 will return to the measurement record screen 72 in Figure 12.

このような測定記録絞込み画面80の機能を利用することで、記憶されている膨大な測定記録の中から、系統、装置、区画の組み合わせた絞込み条件の設定により測定記録を絞り込んで表示させることができ、例えば、電流値異常を起こした適宜の装置の回線劣化状況等の判断を効率良く行うことを可能とする。 By using the functions of this measurement record filtering screen 80, it is possible to filter and display measurement records from the vast amount of stored measurement records by setting filtering conditions that combine systems, devices, and sections, making it possible to efficiently determine, for example, the line degradation status of a specific device that has experienced an abnormal current value.

なお、測定記録の絞込み条件としては、系統、装置、区画に加え、期間を選択できるようにしても良い。 In addition to system, equipment, and section, the period can also be selected as a filtering condition for measurement records.

[本発明の変形例]
上記の実施形態では、火災警報、障害警報、電流値異常警報、電流値異常の予兆警報を行っているが、その内の少なくともいずれか三つを識別できればよい。
[Modifications of the present invention]
In the above embodiment, a fire alarm, a fault alarm, an abnormal current value alarm, and a warning sign alarm of an abnormal current value are issued, but it is sufficient if at least any three of them can be identified.

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。 The present invention also includes appropriate modifications that do not impair its objectives 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
12,12-11~12-16,12-21~12-26:信号回線
14:消火栓弁開閉検出スイッチ
16:手動通報装置
18:消火栓装置
20:消火ポンプ設備
22:冷却ポンプ設備
24:IG子局設備
26:遠方監視制御設備
28:換気設備
30:警報表示板設備
32:ラジオ再放送設備
34:テレビ監視設備
36:照明設備
40:制御部
42,54:P型伝送部
44:グラフィックパネル
46:モニタ装置
48:警報部
50:表示パネル
52:操作パネル
56:監視制御部
58:電流監視部
60:警報表示制御部
61:筐体
62:パネル扉
70:モニタ画面
72:測定記録画面
80:測定記録絞込み画面
100:火災代表灯
102a:上り線トンネル系統図
102b:下り線トンネル系統図
104:消火栓配置部
106:手動通報装置配置部
108:消火栓起動装置配置部
110,112:回線表示灯
120:手動通報回線断線灯
122:消火栓回線断線灯
124:電流監視装置測定中灯
126:電流監視装置故障灯
128:手動通報電流値異常灯
130:手動通報電流値異常予兆灯
132:消火栓電流値異常灯
134:消火栓電流値異常予兆灯





























1a: Up-line tunnel 1b: Down-line tunnel 10: Disaster prevention receiving panel 12, 12-11 to 12-16, 12-21 to 12-26: Signal line 14: Fire hydrant valve open/close detection switch 16: Manual reporting device 18: Fire hydrant device 20: Fire pump equipment 22: Cooling pump equipment 24: IG child station equipment 26: Remote monitoring and control equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcast equipment 34: Television monitoring equipment 36: Lighting equipment 40: Control unit 42, 54: P-type transmission unit 44: Graphic panel 46: Monitor device 48: Alarm unit 50: Display panel 52: Operation panel 56: Monitoring and control unit 58: Current monitoring unit 60: alarm display control unit 61: housing 62: panel door 70: monitor screen 72: measurement record screen 80: measurement record narrowing down screen 100: fire representative light 102a: up line tunnel system diagram 102b: down line tunnel system diagram 104: fire hydrant arrangement unit 106: manual reporting device arrangement unit 108: fire hydrant starting device arrangement unit 110, 112: line indicator light 120: manual reporting line disconnection light 122: fire hydrant line disconnection light 124: current monitoring device measuring light 126: current monitoring device fault light 128: manual reporting current value abnormal light 130: manual reporting current value abnormality warning light 132: fire hydrant current value abnormality warning light 134: fire hydrant current value abnormality warning light





























Claims (3)

監視エリアに対応して配置した端末機器から信号回線を介して送信され防災受信盤で受信される所定の信号に基づく前記監視エリアで発生した異常及び前記信号回線に生じた異常を含む複数種類の事象に関する表示を行う防災システムに於いて、
前記防災受信盤は、
前記表示の対象となる前記事象の種類に応じて異なる態様の表示をする表示部と、
前記表示部により前記信号回線に所定の異常が生じた状態である旨を表示するときに、当該信号回線に生じた前記所定の異常に関する内容情報を表示する第2の表示部と、
少なくとも前記信号回線に異常が生じたと判定した結果及びその判定結果の元となった当該信号回線の電流値を表示する第3の表示部と、
を備え、
前記防災受信盤の筐体に、当該筐体の前方回りに回動することにより開閉可能な扉を設け、
前記表示部及び前記第2の表示部は、前記扉の閉鎖時に前記筐体の前方から視認される前記扉の表面配置され、
第3の表示部は、前記扉の開放時に前記表示部及び前記第2の表示部が視認されない位置から視認される場合が存在する前記筐体内部に配置されたことを特徴とする防災システム。
A disaster prevention system displays a plurality of types of events including abnormalities occurring in a monitoring area and abnormalities occurring in the signal line based on a predetermined signal transmitted from a terminal device arranged corresponding to the monitoring area via a signal line and received by a disaster prevention receiving panel,
The disaster prevention receiving panel is:
A display unit that displays the event in a different manner depending on the type of the event to be displayed;
a second display unit that displays content information regarding the predetermined abnormality occurring in the signal line when the display unit displays that the predetermined abnormality has occurred in the signal line;
a third display unit that displays at least a result of determining that an abnormality has occurred in the signal line and a current value of the signal line on which the determination result is based;
Equipped with
A door is provided on the housing of the disaster prevention receiving panel so as to be able to be opened and closed by rotating around the front of the housing,
the display unit and the second display unit are disposed on a surface of the door that is visible from the front of the housing when the door is closed,
A disaster prevention system characterized in that a third display unit is arranged inside the housing where, when the door is open, there are cases where the third display unit and the second display unit can be seen from a position where they are not visible.
請求項1記載の防災システムに於いて、
前記表示部は、前記信号回線の各々に対応して設けられた回線表示灯であり、前記事象の種類に応じて異なる態様の表示を行うことを特徴とする防災システム。
In the disaster prevention system according to claim 1,
A disaster prevention system characterized in that the display unit is a line indicator light provided corresponding to each of the signal lines, and displays different types of information depending on the type of event.
請求項1又は2記載の防災システムに於いて、
前記表示の対象とする前記信号回線に生じた異常は、前記信号回線の障害、又は、前記信号回線の電流値異常、又は、前記信号回線の電流値異常及び前記信号回線の電流値異常の発生が予測される状態である前記信号回線の電流値異常の予兆を含むことを特徴とする防災システム。
In the disaster prevention system according to claim 1 or 2 ,
A disaster prevention system characterized in that the abnormality that has occurred in the signal line to be displayed includes a fault in the signal line, or an abnormal current value in the signal line , or an abnormal current value in the signal line, or a sign of an abnormal current value in the signal line that is a state in which an abnormal current value in the signal line is predicted to occur .
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