JP2007148562A - Fire sensor and fire alarm system - Google Patents

Fire sensor and fire alarm system Download PDF

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JP2007148562A
JP2007148562A JP2005339165A JP2005339165A JP2007148562A JP 2007148562 A JP2007148562 A JP 2007148562A JP 2005339165 A JP2005339165 A JP 2005339165A JP 2005339165 A JP2005339165 A JP 2005339165A JP 2007148562 A JP2007148562 A JP 2007148562A
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detector
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JP4781091B2 (en
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Yasuhiro Sato
康弘 佐藤
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Nohmi Bosai Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To enable suppression of test consumption current for every circuit by performing an operation test of a fire detector one by one in order without overlapping test signals and without the need of a dedicated fire receiver. <P>SOLUTION: The fire sensor comprises; a fire detection sensor 11 which detects a fire; a test light source 22 which makes a pseudo fire signal output to the fire detection sensor 11 based on a test signal; a test setting switch device 21 which can set to generate and periodically output the test signal by itself or set to receive the test signal from outside; a conversion means 31 which converts a signal from the fire detection sensor 11 into a digital signal according to the size of the signal; and a CPU 32 which is a fire discrimination/test determination section which discriminates the fire based on the digital signal converted by the conversion means 31 and outputs the fire signal, and outputs the test signal to outside after test determination based on a pseudo fire signal output by the test light source 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は火災感知器及び火災報知システム、特に火災感知器の動作試験における試験消費電流を抑制できるようにしたものに関する。   The present invention relates to a fire detector and a fire alarm system, and more particularly to a device capable of suppressing test consumption current in an operation test of a fire detector.

従来の火災感知装置は、火災の熱を感知して閉じる感熱スイッチと抵抗器とから成る直列回路を有し、感熱時に前記感熱スイッチが閉じ、このときの感熱スイッチを流れる電流により受信機内の警報器を鳴動させて火災を報知する熱式火災感知装置において、並列接続された熱感知器群を受信機側より遠方操作によりその作動点検を行う場合、前記受信機内の点検スイッチを閉じることにより各熱感知器側に対してヒータ加熱用配線を経て各熱感知器内の加熱ヒータに直流電源が供給され、このヒータの加熱により火災熱と同等の熱を加え、感熱スイッチを閉じさせ、感知信号電流に全感知器の個数を乗じた値を受信機内の直流電流計で計測し、その値が全感知器の個数と感知信号電流との積であることを知って全熱感知器が正常に作動していることを知るようにしたものである(例えば、特許文献1参照。)。
特開昭53−69598号公報(第1頁、第1図)
A conventional fire detection device has a series circuit composed of a thermal switch and a resistor that are closed by detecting the heat of a fire, and the thermal switch is closed at the time of thermal detection, and an alarm in the receiver is detected by the current flowing through the thermal switch at this time. In a thermal fire detection device that sounds a fire by sounding a detector, when checking the operation of a group of heat detectors connected in parallel by remote operation from the receiver side, each checker in the receiver is closed by closing each check switch. DC power is supplied to the heater in each heat detector via the heater heating wiring to the heat detector side, and heat equivalent to fire heat is applied by heating the heater, the thermal switch is closed, and the detection signal The value obtained by multiplying the current by the number of all sensors is measured by the DC ammeter in the receiver, and the total heat sensor is operated normally by knowing that the value is the product of the number of all sensors and the sensing signal current. Operate Is obtained by to know Rukoto (e.g., see Patent Document 1.).
JP-A-53-69598 (first page, FIG. 1)

しかし、従来の火災感知装置では、受信機側より遠方操作によりその作動点検を行う場合、受信機内の点検スイッチを閉じることにより、並列接続された熱感知器群の各熱感知器内の加熱ヒータに直流電源が供給され、このヒータの加熱により火災の熱と同等の熱を加え、感熱スイッチを閉じさせて一斉に作動点検を行うため、回線に流れる感知信号電流による消費電流が大きくなり、回線毎の許容消費電流によっては、熱感知器の最大接続台数に制約を受ける場合があるという問題があった。
また、従来の火災感知装置では、受信機内に点検スイッチを設ける必要があり、専用の受信機が必要となって、構成が複雑になり、高価になり、しかも点検スイッチを有する専用の受信機がなければ、熱感知器の作動点検を行うことができないという問題点もあった。
However, in the conventional fire detection device, when checking the operation by remote operation from the receiver side, the heater in each heat detector of the heat detector group connected in parallel is closed by closing the check switch in the receiver. DC power is supplied to the heater and heat equivalent to the heat of the fire is applied by heating the heater, and the thermal switch is closed and the operation is checked all at once. There is a problem that the maximum number of heat detectors connected may be limited depending on the allowable current consumption for each.
In addition, in the conventional fire detection device, it is necessary to provide a check switch in the receiver, and a dedicated receiver is required, the configuration becomes complicated and expensive, and a dedicated receiver having a check switch is required. Otherwise, there was a problem that the operation check of the heat sensor could not be performed.

本発明はかかる問題点を解決するためになされたもので、専用の火災受信機を必要とせず、試験信号を重ならせずに火災感知器を1台ずつ順送りに動作試験を行うことにより、回線毎の試験消費電流を抑制できる火災感知器及び火災報知システムを提供することを目的とする。   The present invention has been made to solve such problems, and does not require a dedicated fire receiver, and by performing an operation test in order of one fire detector at a time without overlapping test signals, An object is to provide a fire detector and a fire alarm system capable of suppressing the test current consumption for each line.

本発明に係る火災感知器は、火災を検知する火災検知センサと、試験信号に基づいて前記火災検知センサに疑似火災信号を出力させる試験手段と、前記試験信号を自ら生成して周期的に出力するよう設定するか、外部から試験信号を受けるよう設定することができる試験設定切替器と、前記火災検知センサからの信号を信号の大きさに応じたデジタル信号に変換する変換手段と、該変換手段が変換したデジタル信号に基づいて火災判別して火災信号を出力し、前記試験手段による疑似火災信号出力に基づく試験判定後に試験信号を外部に出力する火災判別・試験判定部とを備えて構成されている。   A fire detector according to the present invention includes a fire detection sensor that detects a fire, a test unit that causes the fire detection sensor to output a pseudo fire signal based on a test signal, and the test signal is generated by itself and periodically output. A test setting switch that can be set to receive a test signal from the outside, a conversion means that converts the signal from the fire detection sensor into a digital signal according to the magnitude of the signal, and the conversion A fire discrimination / test judgment unit that outputs a fire signal after judging a fire based on a digital signal converted by the means and outputs a test signal to the outside after a test judgment based on a pseudo fire signal output by the test means Has been.

また、本発明に係るもう1つの火災報知システムは、火災を監視し、警報を行う火災受信部と、該火災受信部からの信号線に並列に接続された複数の前記請求項1記載の火災感知器とを備え、前記複数の火災感知器のうち、1つの火災感知器について試験設定切替器により試験信号を自ら生成して周期的に出力するよう設定して親火災感知器として機能させ、それ以外の火災感知器について試験設定切替器により外部から試験信号を受けるよう設定して子感知器として機能させ、前記親火災感知器の試験手段は自ら生成して周期的に出力する試験信号に基づいて火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、前記子火災感知器の試験手段は外部からの試験信号に基づいて前記火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、子火災感知器の当該動作を末端の子感知器まで繰り返すようにしたものである。   According to another aspect of the present invention, there is provided a fire alarm system according to claim 1, wherein the fire alarm system is configured to monitor a fire and give an alarm, and a plurality of fires connected in parallel to a signal line from the fire receiver. A detector, and among the plurality of fire detectors, one fire detector is configured to generate a test signal by a test setting switch by itself and to periodically output the fire detector, and function as a parent fire detector. For other fire detectors, the test setting switcher is set to receive a test signal from the outside so that it functions as a child detector. The test means of the parent fire detector generates a test signal that it generates and outputs periodically. The fire detection sensor outputs a pseudo fire signal to the fire detection sensor, and the fire determination / test determination unit outputs a test signal to the next child fire detector after the test determination based on the pseudo fire signal output by the test means. fire The test means of the sensor causes the fire detection sensor to output a pseudo fire signal based on a test signal from the outside, and the fire discrimination / test judgment unit outputs the test signal after the test judgment based on the pseudo fire signal output by the test means. This is output to the next child fire detector, and the operation of the child fire detector is repeated up to the child detector at the end.

以上説明したように本発明における火災感知器は、火災を検知する火災検知センサと、試験信号に基づいて火災検知センサに疑似火災信号を出力させる試験手段と、試験信号を自ら生成して周期的に出力するよう設定するか、外部から試験信号を受けるよう設定することができる試験設定切替器と、火災検知センサからの信号を信号の大きさに応じたデジタル信号に変換する変換手段と、変換手段が変換したデジタル信号に基づいて火災判別して火災信号を出力させ、試験手段による疑似火災信号出力に基づく試験判定後に試験信号を外部に出力する火災判別・試験判定部とを備えているので、火災を監視し、警報を行う火災受信部からの信号線にこのような火災感知器を複数並列に接続し、複数の火災感知器のうち、1つの火災感知器について試験設定切替器により試験信号を自ら生成して周期的に出力するよう設定して親火災感知器として機能させ、それ以外の火災感知器について試験設定切替器により外部から試験信号を受けるよう設定して子感知器として機能させるようにすることにより、親火災感知器は自ら生成して周期的に出力する試験信号に基づいて試験判定を行い、試験判定後に試験信号を次段の子火災感知器に出力し、子火災感知器は外部からの試験信号に基づいて試験判定を行い、試験判定後に試験信号を次段の子火災感知器に出力するため、試験信号を出さない一般的な火災受信機を用いた火災報知システムにおいても複数の炎感知器について動作試験を順次行うことが可能となった。   As described above, the fire detector according to the present invention includes a fire detection sensor that detects a fire, a test unit that causes the fire detection sensor to output a pseudo fire signal based on the test signal, and generates a test signal by itself to generate a periodic signal. A test setting switcher that can be set to output to a test signal or receive a test signal from the outside, a conversion means that converts the signal from the fire detection sensor into a digital signal according to the magnitude of the signal, and conversion Because it has a fire discrimination and test judgment unit that outputs a fire signal after judging the fire based on the digital signal converted by the means, and outputs the test signal to the outside after the test judgment based on the pseudo fire signal output by the test means Connect multiple fire detectors in parallel to the signal line from the fire receiver that monitors fires and issues alarms, and connects one of the multiple fire detectors to one fire detector. Set the test setting switch to generate the test signal itself and output it periodically to function as the parent fire detector, and set the other fire detectors to receive the test signal from the outside by the test setting switch By making it function as a child detector, the parent fire detector makes a test decision based on a test signal that it generates and periodically outputs, and after the test decision, the test signal is detected as a child fire detector in the next stage. Because the child fire detector makes a test decision based on the external test signal and outputs the test signal to the next child fire detector after the test decision, a general fire that does not output a test signal Even in a fire alarm system using a receiver, it has become possible to sequentially perform operation tests on a plurality of flame detectors.

また、もう1つの本発明は、親火災感知器の試験手段は自ら生成して周期的に出力する試験信号に基づいて火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、子火災感知器の試験手段は外部からの試験信号に基づいて火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、子火災感知器の当該動作を末端の子感知器まで繰り返すようにしたので、火災感知器1台ずつ順送りに動作試験を行うこととなり、動作試験における試験消費電流の分散を図ることができ、試験信号を出さない一般的な火災受信機を用いた火災報知システムにおいても複数の炎感知器について動作試験を順次行うことが可能となった。   Further, another aspect of the present invention is that the fire detecting sensor outputs a pseudo fire signal based on a test signal generated and periodically output by the test means of the parent fire detector, After the test determination based on the pseudo fire signal output by the test means, the test signal is output to the child fire detector of the next stage, and the test means of the child fire sensor transmits the pseudo fire signal to the fire detection sensor based on the test signal from the outside. The fire discrimination / test judgment unit outputs a test signal to the child fire detector in the next stage after the test judgment based on the pseudo fire signal output by the test means, and performs the operation of the child fire sensor at the terminal child. Since the operation is repeated up to the detector, the fire test will be performed one by one, and the current consumption in the operation test can be distributed, and a general fire receiver that does not output a test signal can be used. for It has become possible to sequentially carry out the operation test for a plurality of flame detector also in the fire alarm system.

図1は本発明の実施の形態1の火災報知システムの構成を示すブロック図、図2は同火災報知システムの火災感知器の構成を示すブロック図である。
図1に示すように、火災報知システムは、火災を検知する複数の炎感知器1と、これら炎感知器1からの火災信号を受信して火災を監視し、警報を行う火災受信機2とを有して大略構成されている。
火災受信機2から延設している電源線3と信号線4にそれぞれ複数の炎感知器1が並列に接続されている。また、炎感知器1同士は試験信号線5で接続されており、最終段の炎感知器1の試験信号線5は火災受信機2に接続されている。さらに、各炎感知器1と火災受信機2は故障信号線6で接続されている。
FIG. 1 is a block diagram showing a configuration of a fire alarm system according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram showing a configuration of a fire detector of the fire alarm system.
As shown in FIG. 1, the fire alarm system includes a plurality of flame detectors 1 that detect a fire, a fire receiver 2 that receives a fire signal from these flame detectors 1, monitors the fire, and issues an alarm. And is generally configured.
A plurality of flame detectors 1 are connected in parallel to a power line 3 and a signal line 4 extending from the fire receiver 2, respectively. The flame detectors 1 are connected to each other by a test signal line 5, and the test signal line 5 of the flame detector 1 at the final stage is connected to the fire receiver 2. Further, each flame detector 1 and the fire receiver 2 are connected by a failure signal line 6.

図2に示すように、各炎感知器1は、焦電素子等からなる赤外線センサ11を備えており、この赤外線センサ11は炎を検出するためのCO2 共鳴放射に関する赤外線を受光し、電気信号に変換して増幅器12に出力する。増幅器12で増幅された信号はMPU13に入力される。23は定電圧回路で、各部に所定の直流電圧を供給する。
MPU13は、図2に示すように、A/D変換器31、CPU32、火災検知プログラムを記憶するROM33、RAM34、タイマ35及びI/O(入出力)回路36を備えており、増幅器12からの出力をA/D変換器31を介して取り込んで、炎であることの火災判別及び試験判定を行う。
As shown in FIG. 2, each flame detector 1 includes an infrared sensor 11 composed of a pyroelectric element or the like. The infrared sensor 11 receives an infrared ray related to CO2 resonance radiation for detecting a flame, and receives an electric signal. And output to the amplifier 12. The signal amplified by the amplifier 12 is input to the MPU 13. A constant voltage circuit 23 supplies a predetermined DC voltage to each unit.
As shown in FIG. 2, the MPU 13 includes an A / D converter 31, a CPU 32, a ROM 33, a RAM 34, a timer 35, and an I / O (input / output) circuit 36 for storing a fire detection program. The output is taken in via the A / D converter 31, and a fire determination and a test determination of being a flame are performed.

また、MPU13はI/O回路36を介して試験入力I/F14、試験出力I/F15、火災出力I/F16及び故障出力I/F17と接続されている。
その試験入力I/F14は火災受信機2又は前段の炎感知器1からの試験信号が入力され、試験出力I/F15は次段の炎感知器1に試験信号を出力し、火災出力I/F16は火災信号を火災受信機2に出力し、故障出力I/F17は故障信号を火災受信機2に出力する。
21は自動試験の設定と手動試験の設定の切り替えを行う試験設定切替器である。ここで、自動試験の設定とは試験信号の有無に拘わらず、自分、即ち炎感知器1自身で定期的に試験信号を出して試験を行うように設定することをいい、手動試験の設定とは外部から試験信号が入ってきたら試験を行うように設定することをいう。試験の設定切替はディップスイッチ等を用いても自動化してもよい。
The MPU 13 is connected to a test input I / F 14, a test output I / F 15, a fire output I / F 16, and a failure output I / F 17 via an I / O circuit 36.
The test input I / F 14 receives a test signal from the fire receiver 2 or the preceding flame detector 1, and the test output I / F 15 outputs a test signal to the next flame detector 1, and fire output I / F F 16 outputs a fire signal to the fire receiver 2, and the failure output I / F 17 outputs a failure signal to the fire receiver 2.
Reference numeral 21 denotes a test setting switching device for switching between automatic test setting and manual test setting. Here, the automatic test setting means that the test is performed by issuing a test signal periodically by itself, that is, by the flame detector 1 regardless of the presence or absence of the test signal. Means that the test is set when a test signal is received from the outside. Switching between test settings may be automated using a dip switch or the like.

従って、試験設定切替器21によって自動試験の設定が行われると、その炎感知器1は親炎感知器1として機能し、手動試験の設定が行われると、その炎感知器1は子炎感知器1として機能するようになる。
22は疑似火災信号を出力させる例えば白熱電球の試験光源で、I/O回路36からの試験用点灯信号に基づいて点灯させられる。
試験設定切替器21を操作して自動試験の設定が行われると、この炎感知器1は親炎感知器1となり、タイマ35が例えば一日一回起動してCPU32からの試験信号に基づいてI/O回路36より試験光源22に試験用点灯信号が出力され、試験光源22が点灯させられる。
Therefore, when the automatic test setting is performed by the test setting switching device 21, the flame detector 1 functions as the parent flame detector 1, and when the manual test is set, the flame detector 1 detects the child flame. To function as a container 1.
Reference numeral 22 denotes a test light source of, for example, an incandescent lamp that outputs a pseudo fire signal, and is turned on based on a test lighting signal from the I / O circuit 36.
When an automatic test is set by operating the test setting switch 21, the flame detector 1 becomes the flame detector 1, and the timer 35 is activated once a day, for example, based on a test signal from the CPU 32. A test lighting signal is output from the I / O circuit 36 to the test light source 22, and the test light source 22 is turned on.

次に、本発明に係る実施の形態の炎感知器の動作について説明する。
まず、赤外線センサ11のセンサ出力は、増幅器12で増幅された後に、MPU13に入力される。MPU13のCPU32では、A/D変換器31によりA/D変換された赤外線センサ11の検出信号から火災における炎の赤外線を検出し、その赤外線量が所定値以上の場合に炎であることの火災判別をする。
こうして火災判別されると、MPU13はI/O回路36を経て火災出力I/F16より信号線4を介して火災受信機2に火災信号を出力する。その火災信号を受けた火災受信機2は火災報知する。
Next, the operation of the flame detector according to the embodiment of the present invention will be described.
First, the sensor output of the infrared sensor 11 is amplified by the amplifier 12 and then input to the MPU 13. The CPU 32 of the MPU 13 detects the infrared ray of the flame in the fire from the detection signal of the infrared sensor 11 A / D converted by the A / D converter 31. Make a decision.
When the fire is determined in this way, the MPU 13 outputs a fire signal to the fire receiver 2 via the signal line 4 from the fire output I / F 16 via the I / O circuit 36. The fire receiver 2 that has received the fire signal notifies the fire.

次に、本発明に係る実施の形態1の火災報知システムの動作試験について説明する。
この場合、図1において火災受信機2に一番近い炎感知器1について試験設定切替器21を操作して自動試験の設定を行って親炎感知器1とし、それ以外の炎感知器1については試験設定切替器21を操作して手動試験の設定を行って子炎感知器1としておく。
そうすると、親炎感知器1のタイマ35が例えば一日一回起動してCPU32からの試験信号に基づいてI/O回路36より試験光源22に試験用点灯信号が出力され、試験光源22が点灯させられる。この親炎感知器1が正常であれば、赤外線センサ11は火災における炎と同様のセンサ出力を出力し、そのセンサ出力は、増幅器12で増幅された後に、MPU13に入力され、MPU13のCPU32で火災判別する。このとき、CPU32では試験光源22によるものと認識しているので、MPU13は火災出力I/F16を作動させずに試験出力I/F15より試験信号線5を介して次段の炎感知器1に試験信号を出力する。
Next, an operation test of the fire alarm system according to the first embodiment of the present invention will be described.
In this case, for the flame detector 1 closest to the fire receiver 2 in FIG. 1, the test setting switch 21 is operated to set the automatic test to be the parent flame detector 1, and for the other flame detectors 1. Is operated as a child flame detector 1 by operating the test setting switch 21 to set a manual test.
Then, the timer 35 of the flame detector 1 is started once a day, for example, and a test lighting signal is output from the I / O circuit 36 to the test light source 22 based on the test signal from the CPU 32, and the test light source 22 is turned on. Be made. If the flame detector 1 is normal, the infrared sensor 11 outputs a sensor output similar to that of a flame in a fire. The sensor output is amplified by the amplifier 12 and then input to the MPU 13. The CPU 32 of the MPU 13 Determine fire. At this time, since the CPU 32 recognizes that it is due to the test light source 22, the MPU 13 does not operate the fire output I / F 16, and the test output I / F 15 passes the test signal line 5 to the next flame detector 1. Output a test signal.

なお、この親炎感知器1が異常の場合は、CPU32は故障と判断して故障信号をI/O回路36を経て故障出力I/F17より出力線6を介して火災受信機2に出力するが、この場合もMPU13はI/O回路36を経て試験出力I/F15より試験信号線5を介して次段の炎感知器1に試験信号を出力する。
次段の子炎感知器1では、その試験信号を試験入力I/F14で受け、その試験信号はI/O回路36を経てCPU32に入力される。試験信号を受けたCPU32はI/O回路36を経て試験光源22に試験用点灯信号を出力し、試験光源22を点灯させ、試験動作に移る。
このようにして、複数の炎感知器1について動作試験が順次行われ、最終段の子炎感知器1が動作試験後に出力する試験信号は火災受信機2に入力され、その試験信号を受け取った火災受信機2は動作試験が終了したことを認識する。また、火災受信機2から一番遠い炎感知器1を親炎感知器1としてもよい。
If the flame detector 1 is abnormal, the CPU 32 determines that a failure has occurred, and outputs a failure signal from the failure output I / F 17 to the fire receiver 2 via the output line 6 via the I / O circuit 36. However, in this case as well, the MPU 13 outputs a test signal from the test output I / F 15 to the next flame detector 1 via the I / O circuit 36 and the test signal line 5.
In the next-stage child flame detector 1, the test signal is received by the test input I / F 14, and the test signal is input to the CPU 32 via the I / O circuit 36. Upon receiving the test signal, the CPU 32 outputs a test lighting signal to the test light source 22 via the I / O circuit 36, turns on the test light source 22, and proceeds to a test operation.
In this way, the operation test is sequentially performed on the plurality of flame detectors 1, and the test signal output after the child flame detector 1 at the final stage is input to the fire receiver 2 and the test signal is received. The fire receiver 2 recognizes that the operation test has been completed. The flame detector 1 farthest from the fire receiver 2 may be used as the flame detector 1.

この実施の形態1の火災報知システムにおいて、動作試験を行う場合、火災受信機2に一番近い炎感知器1について試験設定切替器21を操作して自動試験の設定を行って親炎感知器1とし、それ以外の炎感知器1については試験設定切替器21を操作して手動試験の設定を行って子炎感知器1としておくことにより、親炎感知器1のタイマ35が一日一回起動してCPU32からの試験信号に基づいてI/O回路36より試験光源42に試験用点灯信号が出力され、試験光源22が点灯させられて動作試験が終了すると、親炎感知器1は次段の子炎感知器1に試験信号を出力し、試験信号を受けた次段の子炎感知器1が試験光源22が点灯させられて動作試験に移り、動作試験が終了すると、次の子炎感知器1に試験信号を出力し、というように次々と複数の子炎感知器1について順次動作試験を行うようにしたので、試験消費電流の分散を図ることができ、試験信号を出さない一般的な火災受信機2を用いた火災報知システムにおいても複数の炎感知器1について動作試験を順次行うことができる。   In the fire alarm system according to the first embodiment, when performing an operation test, the flame detector 1 closest to the fire receiver 2 is set to an automatic test by operating the test setting switch 21 to set the parent flame detector. For other flame detectors 1, the test setting switch 21 is operated to set the manual test so that the child flame detector 1 is set. When the test lighting signal is output from the I / O circuit 36 to the test light source 42 based on the test signal from the CPU 32 and the test light source 22 is turned on to complete the operation test, the flame detector 1 When a test signal is output to the next-stage child flame detector 1, the next-stage child flame detector 1 that has received the test signal turns on the test light source 22 and moves to an operation test. A test signal is output to the flame detector 1. Since the operation tests are sequentially performed on the plurality of child flame detectors 1 one after another, the fire alarm system using the general fire receiver 2 that can distribute the test current consumption and does not output the test signal. Also, the operation test can be sequentially performed on the plurality of flame detectors 1.

上記実施の形態1では試験信号を出さない一般的な火災受信機について説明したが、試験信号を出す専用の火災受信機の場合には、全ての炎感知器1について試験設定切替器21を操作して手動設定にしておけば、動作試験を順次行うことができることはいうまでもない。
また、この実施の形態1では炎感知器として説明したが、煙感知器、熱感知器でもよいことは勿論である。
さらに、火災感知器が火災受信機に火災信号や故障信号を出力する火災報知システムだけでなく、火災感知器が火災受信機に火災や故障の情報を伝送する火災報知システムにも利用できる。
In the first embodiment, a general fire receiver that does not output a test signal has been described. However, in the case of a dedicated fire receiver that outputs a test signal, the test setting switch 21 is operated for all flame detectors 1. Needless to say, if manual setting is performed, operation tests can be performed sequentially.
Further, although the flame detector has been described in the first embodiment, it is needless to say that a smoke detector or a heat detector may be used.
Furthermore, the present invention can be used not only in a fire alarm system in which a fire detector outputs a fire signal or a failure signal to a fire receiver, but also in a fire alarm system in which a fire detector transmits information on a fire or a fault to the fire receiver.

本発明の実施の形態1の火災報知システムの構成を示すブロック図である。It is a block diagram which shows the structure of the fire alarm system of Embodiment 1 of this invention. 同火災報知システムの火災感知器の構成を示すブロック図である。It is a block diagram which shows the structure of the fire detector of the same fire alarm system.

符号の説明Explanation of symbols

1 炎感知器、2 火災受信機、3 電源線、4 信号線、5 試験信号線、6 出力線、11 赤外線センサ、12 増幅器、13 MPU、21 試験設定切替器、22 試験光源、31 A/D変換器、32 CPU、33 ROM、34 RAM、35 タイマ、36 I/O回路。
1 Flame detector, 2 Fire receiver, 3 Power line, 4 Signal line, 5 Test signal line, 6 Output line, 11 Infrared sensor, 12 Amplifier, 13 MPU, 21 Test setting changer, 22 Test light source, 31 A / D converter, 32 CPU, 33 ROM, 34 RAM, 35 timer, 36 I / O circuit.

Claims (2)

火災を検知する火災検知センサと、
試験信号に基づいて前記火災検知センサに疑似火災信号を出力させる試験手段と、
前記試験信号を自ら生成して周期的に出力するよう設定するか、外部から試験信号を受けるよう設定することができる試験設定切替器と、
前記火災検知センサからの信号を信号の大きさに応じたデジタル信号に変換する変換手段と、
該変換手段が変換したデジタル信号に基づいて火災判別して火災信号を出力し、前記試験手段による疑似火災信号出力に基づく試験判定後に試験信号を外部に出力する火災判別・試験判定部と、
を備えたことを特徴とする火災感知器。
A fire detection sensor for detecting a fire;
Test means for causing the fire detection sensor to output a pseudo fire signal based on a test signal;
A test setting switch that can be set to generate the test signal itself and periodically output, or to receive a test signal from the outside,
Conversion means for converting a signal from the fire detection sensor into a digital signal corresponding to the magnitude of the signal;
A fire determination / test determination unit for outputting a fire signal by determining a fire based on the digital signal converted by the conversion means, and outputting a test signal to the outside after a test determination based on a pseudo fire signal output by the test means,
A fire detector characterized by comprising:
火災を監視し、警報を行う火災受信部と、該火災受信部からの信号線に並列に接続された複数の前記請求項1記載の火災感知器とを備え、
前記複数の火災感知器のうち、1つの火災感知器について試験設定切替器により試験信号を自ら生成して周期的に出力するよう設定して親火災感知器として機能させ、それ以外の火災感知器について試験設定切替器により外部から試験信号を受けるよう設定して子感知器として機能させ、
前記親火災感知器の試験手段は自ら生成して周期的に出力する試験信号に基づいて火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、
前記子火災感知器の試験手段は外部からの試験信号に基づいて前記火災検知センサに疑似火災信号を出力させ、火災判別・試験判定部は、該試験手段による疑似火災信号出力に基づく試験判定後に試験信号を次段の子火災感知器に出力し、子火災感知器の当該動作を末端の子感知器まで繰り返すようにしたことを特徴とする火災報知システム。
A fire receiving unit that monitors fire and issues an alarm, and a plurality of fire detectors according to claim 1 connected in parallel to a signal line from the fire receiving unit,
Among the plurality of fire detectors, one fire detector is set so as to generate a test signal by a test setting switch and output periodically, and function as a parent fire detector, and other fire detectors. Set the test setting switch to receive a test signal from the outside and make it function as a child sensor.
The test means of the parent fire detector causes the fire detection sensor to output a pseudo fire signal based on a test signal generated and output periodically, and the fire determination / test determination unit outputs a pseudo fire signal by the test means. After the test judgment based on the test signal is output to the next child fire detector,
The test means of the child fire detector causes the fire detection sensor to output a pseudo fire signal based on a test signal from the outside, and the fire determination / test determination unit performs the test determination based on the pseudo fire signal output by the test means. A fire alarm system characterized by outputting a test signal to a child fire detector at the next stage and repeating the operation of the child fire detector to the child detector at the end.
JP2005339165A 2005-11-24 2005-11-24 Fire alarm system Expired - Fee Related JP4781091B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002042285A (en) * 2000-07-31 2002-02-08 Hochiki Corp Simultaneous alarm messaging system for several alarms
JP2003058961A (en) * 2001-08-14 2003-02-28 Nohmi Bosai Ltd Fire sensor
JP2003296849A (en) * 2002-03-29 2003-10-17 Nohmi Bosai Ltd Tunnel disaster prevention system and flame detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002042285A (en) * 2000-07-31 2002-02-08 Hochiki Corp Simultaneous alarm messaging system for several alarms
JP2003058961A (en) * 2001-08-14 2003-02-28 Nohmi Bosai Ltd Fire sensor
JP2003296849A (en) * 2002-03-29 2003-10-17 Nohmi Bosai Ltd Tunnel disaster prevention system and flame detector

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