JPS5996693U

JPS5996693U - Fire alarm signal transfer device

Info

Publication number: JPS5996693U
Application number: JP19004182U
Authority: JP
Inventors: 田辺　薫; 裕史島; 大野　和年; 美典小島; 津留　裕昭
Original assignee: ホーチキ株式会社
Priority date: 1982-12-16
Filing date: 1982-12-16
Publication date: 1984-06-30
Also published as: JPS6343587Y2

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

[Brief explanation of drawings]

図は本考案による一実施例を示した回路図である。１・・・中継器、２・・・警報盤、３・・・信号線、４
・・・コモン線、５・・・火災感知器、−６，７・・・
リレー、Ａｌ。Ａ２．　Ｂｌ、　Ｂ２．　ＣＩ、　Ｌｌ、　Ｆｌ、　Ｆ
２・・・端子、ｐｃｌ、ｐｃ２・・・発光素子、ｐｃ３
．ｐｃ４・・・受光素子、Ｒ１〜Ｒ７・・・抵抗、Ｑｌ
、Ｑ２・・・トランジスタ、ＤＩ、Ｄ２・・・ダイオー
ド、ＺＤＩ、Ｚｎ２・・・ツェナダイオード、Ｃ２１，
Ｌ２・・・移報端子。The figure is a circuit diagram showing an embodiment of the present invention. 1... Repeater, 2... Alarm panel, 3... Signal line, 4
...Common wire, 5...Fire detector, -6,7...
Relay, Al. A2. Bl, B2. CI, Ll, Fl, F
2...terminal, pcl, pc2...light emitting element, pc3
．． pc4... Light receiving element, R1 to R7... Resistor, Ql
, Q2...transistor, DI, D2...diode, ZDI, Zn2... Zener diode, C21,
L2... Transfer terminal.

Claims

[Claim for Utility Model Registration] A plurality of repeaters are connected to the T-co signal line drawn out from the central receiver, and a fire alarm panel installed in each dwelling unit is connected to each of the repeaters. In a fire alarm signal transfer/information device in an apartment building that transfers and outputs an alarm signal from a fire alarm panel to the receiver via a repeater, a signal line between a pair of signal lines drawn out from the fire alarm panel is provided. A terminating resistor and a fire detector are connected in parallel, and the fire alarm panel includes a fire detection transistor that detects activation of the fire detector and supplies a fire detection voltage to a transfer terminal to the repeater;
A monitoring current flowing through the terminating resistor is detected and a specified line monitoring voltage lower than the fire detection voltage determined by the Zener diode is supplied to the transfer terminal, and when interruption of the monitoring current is detected, the line monitoring voltage is applied to the transfer terminal. A disconnection detection transistor is provided to cut off the supply of the line monitoring voltage, and the repeater is provided with a Zener diode connected in parallel between the signal lines drawn out from the transfer terminal of the alarm receiving board, and for receiving the fire detection voltage. a first photocoupler that transmits and outputs a fire alarm signal to the receiver upon conduction; and a second photocoupler that receives a disconnection of the line monitoring voltage and transmits and outputs a disconnection signal to the receiver. A fire alarm signal transfer device characterized by: