JPH045950B2 - - Google Patents
Info
- Publication number
- JPH045950B2 JPH045950B2 JP57197654A JP19765482A JPH045950B2 JP H045950 B2 JPH045950 B2 JP H045950B2 JP 57197654 A JP57197654 A JP 57197654A JP 19765482 A JP19765482 A JP 19765482A JP H045950 B2 JPH045950 B2 JP H045950B2
- Authority
- JP
- Japan
- Prior art keywords
- sensing wire
- relay
- fire
- sensing
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Fire-Detection Mechanisms (AREA)
- Fire Alarms (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、感知線を使用した火災感知設備に関
するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to fire detection equipment using sensing wires.
洞道、人孔内等における火災感知設備において
は、センサーとして差動式スポツト、煙感知器、
感知線等が使用されている。
Fire detection equipment in caves, manholes, etc. uses differential spot sensors, smoke detectors,
Sensing wires etc. are used.
第１図は感知線を使用した火災感知設備の概要
を示す図であり、図中１は洞道、２は洞道１内に
配置された２本の導線２ａからなる感知線であ
る。感知線２の一端は制御盤３を介して電源（図
示せず）に接続され他端は開放している。制御盤
３は、感知線２がシヨートしたときに作動する検
知手段を備えている。このような構成によつて、
火災等の異常が洞道１内で発生すると、感知線２
はシヨートし、その結果制御盤３中の検知手段に
よつて外部に検知信号が送られる。しかしなが
ら、感知線を使用した火災感知設備においては、
洞道内の諸条件（温度、湿度、雨水等）に影響さ
れず、メンテナンスが容易であるという利点があ
るが、火災等の異常が洞道内の何処で発生したの
かを知ることができず、しかも感知線の断線を知
ることができない。 FIG. 1 is a diagram showing an outline of a fire detection equipment using a sensing wire. In the figure, 1 is a tunnel, and 2 is a sensing wire consisting of two conductive wires 2a arranged in the tunnel 1. One end of the sensing line 2 is connected to a power source (not shown) via a control panel 3, and the other end is open. The control panel 3 is equipped with a detection means that is activated when the sensing wire 2 is shot. With such a configuration,
When an abnormality such as a fire occurs in the tunnel 1, the detection line 2
is shot, and as a result, a detection signal is sent to the outside by the detection means in the control panel 3. However, in fire detection equipment using sensing wires,
It has the advantage of being unaffected by various conditions inside the cave (temperature, humidity, rainwater, etc.) and is easy to maintain, but it is difficult to know where in the tunnel an abnormality such as a fire has occurred. It is not possible to detect a break in the sensing wire.
火災等の異常発生位置を知ることができるもの
として、本願出願前の出願公開に係る特開昭57−
44864号公開公報開示のものがあるが、この開示
に係る発明は検知線の異常点検出装置に関するも
ので、単位長さ当りの抵抗値が既知である１対の
導線を近傍させて布設してなる温度検知線を設
け、この温度検知線と電源とを結ぶ線路の一方の
路線に直列に既知の抵抗値の抵抗を接続し、この
抵抗の両端の電圧を測定する電圧計を設けて構成
されている。 As a means of knowing the location of occurrence of abnormalities such as fires, Japanese Patent Application Laid-Open No. 1983-1981, which was published prior to the filing of the present application,
The invention disclosed in Publication No. 44864 relates to an abnormal point detection device for a detection wire, and involves laying a pair of conductive wires close to each other with a known resistance value per unit length. A temperature detection line is provided, a resistor with a known resistance is connected in series to one line of the line connecting this temperature detection line and the power supply, and a voltmeter is provided to measure the voltage across this resistance. ing.
而して、前記発明においては温度検知線には常
時は電圧が印加されているのみであり、これに電
流は流されていない。火災等の発生により近接し
て布設した１対の導線間に短絡を生じれば、上記
１対の検知線に短絡電流が流れ、上記の抵抗の両
端には電圧が生じる。この電圧は前記電圧計によ
つて測定される。上記線路に印加した電圧と上記
電圧計の指示値とによつて、上記短絡位置を知る
ことができるようにしたものである。 In the above invention, only a voltage is always applied to the temperature detection line, and no current is passed through it. If a short circuit occurs between a pair of conductive wires installed in close proximity due to a fire or the like, a short circuit current flows through the pair of detection wires, and a voltage is generated across the resistor. This voltage is measured by the voltmeter. The position of the short circuit can be determined based on the voltage applied to the line and the indicated value of the voltmeter.
上記出願公開の発明によれば、比較的簡単な設
備で火災等の発生のみでなく、その発生位置をも
知ることができることは前記公開公報記載の通り
である。しかしながら、前記公開公報記載の発明
の設備においては１対の検知線には、その短絡時
にのみ電流が流れるものであり、断線を生じたと
きこれを検出することができないことは図１に示
した従来例と同様である。 According to the invention disclosed in the above-mentioned application, it is possible to know not only the occurrence of a fire, etc., but also the location of the occurrence with relatively simple equipment, as described in the above-mentioned publication. However, in the equipment of the invention described in the above-mentioned publication, current flows through the pair of detection wires only when they are short-circuited, and it is not possible to detect a disconnection as shown in Figure 1. This is the same as the conventional example.
一方、差動式スポツトまたは煙感知器を使用し
た火災感知設備においては、差動式スポツトまた
は煙感知器を、洞道、人孔等の中にその長さ方向
にそつて所定間隔で個別に作動するように設置す
ることによつて、洞道等内における火災等の異常
発生箇所を知ることができる。しかしながら、こ
れら差動式スポツト、煙感知器は、洞道等内の諸
条件（温度、湿度、雨水等）によつては誤動作す
るおそれがあり、しかもメンテナンスが面倒であ
る。 On the other hand, in fire detection equipment using differential spot or smoke detectors, the differential spot or smoke detectors are installed individually at predetermined intervals along the length of a cave, manhole, etc. By installing it so that it is activated, it is possible to know where an abnormality such as a fire has occurred in a tunnel or the like. However, these differential spot and smoke detectors may malfunction depending on various conditions (temperature, humidity, rainwater, etc.) inside the tunnel, and moreover, maintenance is troublesome.
本発明は上記の事情に基きなされたもので、感
知線を使用して火災等の異常発生箇所を知ること
ができ、且つ感知線の断線を知ることができる火
災感知設備を得ることを目的としている。
The present invention was made based on the above-mentioned circumstances, and aims to provide a fire detection equipment that can detect the location of an abnormality such as a fire using a detection line, and also detect a disconnection of the detection line. There is.
本発明においては、感知線の長さ方向の複数箇
所に抵抗を挿入し、且つ感知線に電流を常時流し
ておくことによつて、前記目的を達成している。
In the present invention, the above object is achieved by inserting resistors at a plurality of locations along the length of the sensing wire and by causing current to flow through the sensing wire at all times.
第２図は本発明の一実施例の概要を示す図、第
３図は同実施例の回路図である。
FIG. 2 is a diagram showing an outline of an embodiment of the present invention, and FIG. 3 is a circuit diagram of the embodiment.
図示されるように、洞道１内には、２本の導線
４ａからなる感知線４が配置され、２本の導線４
ａの一端は制御盤５を介して電源（図示せず）に
接続されている。２本の導線４ａのうちの一方に
は、その長さ方向に沿つて所定間隔で抵抗６ａ，
６ｂ，６ｃ，６ｘが設けられている。２本の導線
４ａの他端は互いに接続されている。なお、各抵
抗６ａ〜６ｄは、例えばFRP製の防水ボツクス
７内に入つている。 As shown in the figure, a sensing wire 4 consisting of two conductive wires 4a is arranged within the tunnel 1, and a sensing wire 4 consisting of two conductive wires 4a is arranged
One end of a is connected to a power source (not shown) via a control panel 5. One of the two conductive wires 4a is provided with resistors 6a and 6a at predetermined intervals along its length.
6b, 6c, and 6x are provided. The other ends of the two conductive wires 4a are connected to each other. The resistors 6a to 6d are housed in a waterproof box 7 made of FRP, for example.
制御盤５内には、一方の導線４ａに各々動作電
流値が異なる４個のリレーR1，R2，R3が並列に
設けてある。これ等のリレーR1，R2，R3の常開
接点（以下ａ接点）R1a、R2a，R3aは、火災発生
等を表示する表示手段８1，８2，８3に接続して
あり、リレーRxのａ接点Rxaは断線表示手段８x
に接続されている。 In the control panel 5, four relays R 1 , R 2 , and R 3 each having a different operating current value are provided in parallel on one conductor 4a. These relays R 1 , R 2 , R 3 normally open contacts (hereinafter referred to as a contacts) R 1a , R 2a , R 3a are connected to display means 8 1 , 8 2 , 8 3 for indicating the occurrence of a fire, etc. The a contact R xa of the relay R x is a disconnection indicator 8 x
It is connected to the.
リレーR2付勢回路には、リレーR1の常閉接点
（以下ｂ接点）R1bが直列に接続してあり、リレ
ーR3の付勢回路には、リレーR1の別のｂ接点
R1bbおよびリレーR2のｂ接点R2bが直列に接続し
てある。 In the energizing circuit of relay R 2 , normally closed contact (hereinafter referred to as b contact) R 1b of relay R 1 is connected in series, and in the energizing circuit of relay R 3 , another b contact of relay R 1 is connected in series.
R 1bb and b contact R 2b of relay R 2 are connected in series.
電源電圧をＶ、各抵抗６ａ〜６ｘの抵抗値を
RA〜RXとした時、感知線４にはＶ／RA＋RB
＋RC＋RXの電流が流れている。 The power supply voltage is V, and the resistance value of each resistor 6a to 6x is
When RA~RX, sensing line 4 has V/RA+RB
+RC+RX current is flowing.
各リレーR1，R2，R3はそれぞれ下記の電流値
において付勢されて、それぞれが対応する制御盤
５外の表示手段８1，８2，８3を作動させる。 Each relay R 1 , R 2 , R 3 is energized at the following current value, respectively, and operates the corresponding display means 8 1 , 8 2 , 8 3 outside the control panel 5.
R1：Ｖ／RA
R2：Ｖ／（RA＋RB）
R3：Ｖ／（RA＋RB＋RC）
なお、リレーRxは通常の感知線の電流Ｖ／RA
＋RB＋RC＋RXにおいて、そのａ接点Rxaを閉
成させており、制御盤５外の表示手段８xにより
感知線４に断線がないことを表示している。R 1 : V/RA R 2 : V/(RA+RB) R 3 : V/(RA+RB+RC) The relay R x is the normal sensing wire current V/RA
+RB+RC+RX, its a contact Rxa is closed, and the display means 8x outside the control panel 5 indicates that there is no disconnection in the sensing wire 4.
今、ここで洞道１内の区域Ａにおいて火災が発
生したとする。すると、前記区域Ａ内の２本の導
線４ａ間がシヨートし、感知線４にはＶ／RAの
電流が流れ、リレーR1が付勢される。すると、
リレーR1のａ接点は閉じられ、ｂ接点R1b，R1bb
は開かれる。これにより、表示手段８1は作動さ
せられ区域Ａ内に火災が発生したことを表示す
る。 Now, suppose that a fire breaks out in area A within tunnel 1. Then, the two conductive wires 4a in the area A are shot, a current of V/RA flows through the sensing wire 4, and the relay R1 is energized. Then,
The a contact of relay R 1 is closed, and the b contacts R 1b , R 1bb
will be opened. As a result, the display means 81 is activated and displays that a fire has broken out in area A.
ところが、リレーR2，R3の付勢回路にはリレ
ーR1のｂ接点R1b，R1bbがそれぞれ挿入されてい
るため、それらの作動電流よりも大きなＶ／RA
の電流が流れても作動することはなく、表示手段
８2，８3が作動させられることはない。 However, since the b contacts R 1b and R 1bb of relay R 1 are inserted into the energizing circuits of relays R 2 and R 3 , respectively, V/RA is larger than their operating current.
Even if a current of
なお、区域Ｂにおいて火災が発生すればリレー
R2には、Ｖ／（RA＋RB）の電流が流れる。こ
の時、リレーR1は非作動であるからｂ接点R1bは
閉じており、前記の電流の流れは妨げられない。
また、区域Ｃにおいて火災が発生すればリレー
R3にはＶ／（RA＋RB＋RC）の電流が流れる
が、この時リレーR1，R2は非作動であるから、
ｂ接点R1bb，R2bは閉じており、前記の電流の流
れが妨げられない。 In addition, if a fire occurs in Area B, the relay will be activated.
A current of V/(RA+RB) flows through R2 . At this time, since the relay R 1 is inactive, the b contact R 1b is closed, and the current flow is not hindered.
In addition, if a fire occurs in Area C, a relay will be sent.
A current of V/(RA+RB+RC) flows through R3 , but at this time relays R1 and R2 are inactive, so
The b contacts R 1bb and R 2b are closed and the current flow is not hindered.
さらに、感知線４に断線を生じた場合には、感
知線４を流れるＶ／RA＋RB＋RC＋RXの電流
が消失し、リレーRxのａ接点Rxaは開放され表示
手段８xは感知線４の断線を表示する。 Furthermore, when a disconnection occurs in the sensing wire 4, the current V/RA+RB+RC+RX flowing through the sensing wire 4 disappears, the a contact Rxa of the relay Rx is opened, and the display means 8x indicates that the sensing wire 4 is disconnected. indicate.
なお、平常時における感知線４の電流によりａ
接点Rxaを閉成させ、その消失により前記ａ接点
を開放させるリレーRxは、前記感知線４の断線
の有無を検知、表示させるためのものである。従
つて、前記リレーRxは火災発生感知対象区域の
最も外側に設けてあり、他のリレーの状態如何に
拘らず作動するものであるから、その付勢回路に
他のリレーにより開閉されるｂ接点等を挿入する
必要はない。 In addition, due to the current of the sensing wire 4 in normal conditions, a
The relay R x which closes the contact R xa and opens the a contact when the contact R xa disappears is used to detect and display the presence or absence of a break in the sensing wire 4 . Therefore, since the relay R x is installed at the outermost part of the fire detection target area and operates regardless of the status of the other relays, there is no possibility that the relay R x will be opened or closed by the other relays in its energizing circuit. There is no need to insert any contacts.
上記のように本発明においては、感知線を使用
して洞道内等における火災発生箇所を知ることが
でき、且つ感知線の断線を知ることができる。
As described above, in the present invention, it is possible to know the location of a fire outbreak in a tunnel etc. using the sensing wire, and it is also possible to know if the sensing wire is broken.
第１図は感知線を使用した従来火災感知設備の
概要を示す図、第２図は本発明の一実施例の概要
を示す図、第３図は同実施例の回路図である。
４……感知線、４ａ……導線、６ａ，６ｂ，６
ｃ，６ｄ……抵抗、８1，８2，８3，８x……表示
手段。
FIG. 1 is a diagram showing an outline of a conventional fire detection equipment using a sensing wire, FIG. 2 is a diagram showing an outline of an embodiment of the present invention, and FIG. 3 is a circuit diagram of the same embodiment. 4...Sensing wire, 4a...Conducting wire, 6a, 6b, 6
c, 6d...Resistance, 81 , 82 , 83 , 8x ...Display means.
Claims (1)
他端間を接続された２本の導線からなる感知線
と、前記２本の導線の少なくとも一方に長手方向
に分布して直列に設けられた複数個の抵抗と、前
記感知線を流れる電流のそれぞれ異なつた値に応
じて作動する複数の検知手段と、これ等の検知手
段の検知結果を表示する表示手段とを有すること
を特徴とする火災感知設備。1. A power source, a sensing wire consisting of two conductive wires each having one end connected to the power source and the other end connected, and a plurality of sensing wires distributed in the longitudinal direction and provided in series on at least one of the two conductive wires. A fire detection sensor comprising: a plurality of resistors, a plurality of detection means that operate according to different values of the current flowing through the sensing wire, and a display means for displaying the detection results of these detection means. Facility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197654A JPS5988659A (en) | 1982-11-12 | 1982-11-12 | Fire sensing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57197654A JPS5988659A (en) | 1982-11-12 | 1982-11-12 | Fire sensing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5988659A JPS5988659A (en) | 1984-05-22 |
| JPH045950B2 true JPH045950B2 (en) | 1992-02-04 |
Family
ID=16378089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57197654A Granted JPS5988659A (en) | 1982-11-12 | 1982-11-12 | Fire sensing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5988659A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2413635A (en) | 2004-04-30 | 2005-11-02 | Thorn Security | Testing a fire detector sensor |
| JP5773662B2 (en) * | 2011-01-24 | 2015-09-02 | 大同信号株式会社 | Faulty device identification system |
| CN103489277B (en) * | 2013-09-26 | 2015-08-26 | 胡亨华 | The fire early-warning system of on-line monitoring electric wiring resistance parameter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644864A (en) * | 1979-09-19 | 1981-04-24 | Hitachi Cable Ltd | Abnormal point sensing device for detection line |
-
1982
- 1982-11-12 JP JP57197654A patent/JPS5988659A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5988659A (en) | 1984-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3973257A (en) | Apparatus for detecting changes in the electrical characteristics of sensor devices | |
| ES2394613T3 (en) | Digital linear thermal detector with thermocouple thermal confirmation | |
| JP4295877B2 (en) | Accident detection communication system and method | |
| US6567001B1 (en) | Fire control panel monitoring for degradation of wiring integrity during alarm state | |
| CN105869339B (en) | Line-type heat detector | |
| JPH045950B2 (en) | ||
| KR20070121720A (en) | Sensor unit | |
| JP2750478B2 (en) | Bus duct temperature monitoring device | |
| US3175206A (en) | Fire detector with integrity-testing device | |
| EP0011461A1 (en) | An improved fire detection system | |
| JP3055572B2 (en) | Water leak detection system | |
| CN210983664U (en) | Cable type linear temperature-sensing fire detector capable of alarming fire when circuit is broken | |
| GB2043974A (en) | Fire detection system | |
| US6606028B1 (en) | Apparatus and method for supervision | |
| JP3380160B2 (en) | Fire alarm device, fire alarm method and recording medium | |
| CN217133815U (en) | Cable type temperature-sensing fire detector with site position display | |
| GB2082358A (en) | Security systems | |
| US4411536A (en) | Bi-directional temperature excursion sensing and locating apparatus | |
| JP7538832B2 (en) | Disaster Prevention System | |
| CN112447017B (en) | Cable type linear temperature-sensing fire detector for alarming fire during circuit breaking | |
| KR100310408B1 (en) | Apparatus for self error checking in a sensing apparatus | |
| JP3125044U (en) | Long switch ON position detection device | |
| CN112730988B (en) | Temperature sensing cable fireproof detection device for high-speed motor train unit converter | |
| JPH0365689B2 (en) | ||
| JPS63245214A (en) | temperature monitoring device |