JPS58174793U - fire alarm device - Google Patents
fire alarm deviceInfo
- Publication number
- JPS58174793U JPS58174793U JP7067182U JP7067182U JPS58174793U JP S58174793 U JPS58174793 U JP S58174793U JP 7067182 U JP7067182 U JP 7067182U JP 7067182 U JP7067182 U JP 7067182U JP S58174793 U JPS58174793 U JP S58174793U
- Authority
- JP
- Japan
- Prior art keywords
- alarm
- fire
- wire
- voltage drop
- resistor
- 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.)
- Granted
Links
Landscapes
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は本考案の−★施例を示す回路図である。
図において、１・・・・・・パルス発生器、２．１１・
・・・・・ゲート、３・・・・・・ダイオード、４・・
曲コンデンサ、５〜８・・・・・・電圧検出回路、９・
・・・・・遅延回路、１０゜１４、 １７． １８・・
・・・・表示灯、１２・・・・・・遅延回路、１３・・
・・・・オア回路、１５・・・・・・アンドゲート、１
６・・・・・・ラッチ回路、Ｅ・・・・・・電源、Ｒ１
・・・・・・電圧降下用抵抗、Ｒ２・・・・・・抵抗、
Ｔ・・・・・・トランジスタ、 。
ＳＣＲ・・・・・・サイリスタ、Ｌｌｌ ”２・・・・
・・警報線、Ｄ□〜Ｄｎ・・・・・・火災感知器。The figure is a circuit diagram showing a -★ embodiment of the present invention. In the figure, 1... pulse generator, 2.11...
...Gate, 3...Diode, 4...
Curved capacitor, 5-8... Voltage detection circuit, 9.
...Delay circuit, 10°14, 17. 18...
...Indicator light, 12...Delay circuit, 13...
...OR circuit, 15...AND gate, 1
6... Latch circuit, E... Power supply, R1
・・・・・・Resistance for voltage drop, R2・・・Resistance,
T...Transistor. SCR...Thyristor, Lll"2...
...Alarm wire, D□~Dn...Fire detector.
Claims (1)
上記天災感知器の発報を前記警報線の他端に接続された
受信機によって検知し火災警報を出すようにした火災警
報装置に−おいて、前記火災感知器の発報回路に直列抵
抗を接続し、前記受信機には、電源と警報線との間に直
列に挿入された電圧降下用抵抗と、該電圧降下用抵抗に
並列に接続゛きれたスイッチ接点と、該スイッチ接点を
間欠的にオンオフ制御するパルス発生器と、前記電圧降
下用抵抗の両端の電圧をそれぞれ所定の電圧と比較する
複数の比較器と、該複数の比較器のうちの１個の出力に
よって少くとも他の１個の比較器の出力および前記パル
ス発生器の出力を禁止する手段とを備えて、前記複数の
比較器のそれぞれの出力によって警報線の断線、短絡、
発報感知器数を表示することを特徴とする火災警報装置
。A fire alarm in which a plurality of fire detectors are connected to a pair of alarm wires, and a receiver connected to the other end of the alarm wire detects an alarm from any of the above natural disaster detectors to issue a fire alarm. In the device, a series resistor is connected to the alarm circuit of the fire detector, and the receiver includes a voltage drop resistor inserted in series between the power supply and the alarm wire, and a voltage drop resistor inserted in series between the power supply and the alarm wire. a switch contact connected in parallel to the resistor, a pulse generator that intermittently controls the switch contact on and off, and a plurality of comparators that compare the voltages across the voltage drop resistor with predetermined voltages, respectively; means for inhibiting the output of at least one other comparator and the output of the pulse generator by the output of one of the plurality of comparators; Warning wire disconnection, short circuit,
A fire alarm device characterized by displaying the number of alarm detectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067182U JPS58174793U (en) | 1982-05-17 | 1982-05-17 | fire alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067182U JPS58174793U (en) | 1982-05-17 | 1982-05-17 | fire alarm device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58174793U true JPS58174793U (en) | 1983-11-22 |
| JPS6347990Y2 JPS6347990Y2 (en) | 1988-12-09 |
Family
ID=30080328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7067182U Granted JPS58174793U (en) | 1982-05-17 | 1982-05-17 | fire alarm device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58174793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002245564A (en) * | 2001-02-15 | 2002-08-30 | Hochiki Corp | Tunnel disaster preventing facility |
-
1982
- 1982-05-17 JP JP7067182U patent/JPS58174793U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002245564A (en) * | 2001-02-15 | 2002-08-30 | Hochiki Corp | Tunnel disaster preventing facility |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6347990Y2 (en) | 1988-12-09 |
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