JPS60164294U

JPS60164294U - Storage type repeater for fire alarm system

Info

Publication number: JPS60164294U
Application number: JP5015084U
Authority: JP
Inventors: 正樹野林; 茂松本
Original assignee: 松下電工株式会社
Priority date: 1984-04-05
Filing date: 1984-04-05
Publication date: 1985-10-31
Also published as: JPH035988Y2

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 the drawing]

第１図は本考案の基本実施例の中継器本体の具一体回路
図、第２図は同上の動作説明用のタイムチャート、第３
図は本考案の実施例の要部回路図、第４図は同上の動作
波形図１．第５図は従来例のブロック図、第６図は同上
の要部回路図、第７図は同上の動作波形図である。１ａは煙感知器、１ｂは熱感知器、２は回線電圧検知回
路部、３は発信機、４はスイッチング回路部、５は高感
度リレー、ｒＯはリレー接点、７は第１のタイマ回路部
、８は第２のタイマ回路部、Ｘは中継器本体、１１は感
知器接続線、ＩＣは共通接続線を示す。 °−−７ヤ１　　　　　　　　　　　−　　　＝−−−−：　　　
　１ｕＪｌ＋７Fig. 1 is an integrated circuit diagram of the main body of the repeater according to the basic embodiment of the present invention, Fig. 2 is a time chart for explaining the operation of the same as above, and Fig. 3
The figure is a circuit diagram of the main part of an embodiment of the present invention, and FIG. 4 is an operation waveform diagram of the same as above. FIG. 5 is a block diagram of the conventional example, FIG. 6 is a circuit diagram of the main part of the same, and FIG. 7 is an operation waveform diagram of the same. 1a is a smoke detector, 1b is a heat sensor, 2 is a line voltage detection circuit section, 3 is a transmitter, 4 is a switching circuit section, 5 is a high sensitivity relay, rO is a relay contact, 7 is a first timer circuit section , 8 is a second timer circuit section, X is a repeater main body, 11 is a sensor connection line, and IC is a common connection line. °−−7ya1−=−−−−:
1 uJl+ 7

Claims

[Scope of utility model registration request]

A voltage is applied between the sensor connection line and the common line through the reception relay in the receiver, and a transmitter, heat sensor, or smoke detector is connected in parallel between the sensor connection line and the common line. However, in a fire alarm system in which an exciting current is sent to a receiving relay via a heat sensor or a smoke sensor when the sensor is turned on,
A line voltage detection circuit unit that generates an output when the applied voltage between the sensor connection line and the common line drops to a predetermined level, and a detection output of the line voltage detection circuit unit that operates in a shorter operating time than the receiving relay; A switching circuit unit that drives a switching means that opens the starting end of either the sensor connection line or the common line by a switching operation, and a switching circuit unit that starts a time-limited operation from the start of the operation of the switching circuit unit until a time-out occurs. a first timer circuit section that sets the circuit section to an on-operable state; and a time-limited operation that starts from the time-up of the first timer circuit section and keeps the switching circuit section off until a preset time elapses. The relay body is formed with the second timer circuit section to be set, and the comparison voltage is compared with the applied voltage between the sensor connection line and the common line and generates an output if it is higher than the applied voltage by a predetermined value or more. A storage type repeater for a fire alarm system, characterized in that a malfunction prevention means for cutting more than one shot value is attached to the main body of the repeater.