JPS60164298U

JPS60164298U - Storage type repeater for fire alarm system

Info

Publication number: JPS60164298U
Application number: JP5015484U
Authority: JP
Inventors: 茂松本; 正樹野林
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: JPH035987Y2

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の中継器本体の具体回路図、第
２図は同上の動作説明用のタイムチャート、第３図は同
上の各中継器本体の増設端子間を接続した状態を示す回
路図、第４図は従来例のブロック図である。 ”　　　ｌａ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、１０は増設端子、
Ｘは中継器本体を示す。Fig. 1 is a specific circuit diagram of a repeater main body according to an embodiment of the present invention, Fig. 2 is a time chart for explaining the operation of the same, and Fig. 3 shows a state in which the extension terminals of each repeater main body are connected. The circuit diagram shown in FIG. 4 is a block diagram of a conventional example. "la is a smoke detector, 1b is a heat detector, 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, 10 is an extension terminal,
X indicates the main body of the repeater.

Claims

[Scope of utility model registration request]

A DC 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. In a fire alarm system that connects a heat sensor or smoke sensor and sends an exciting current to the receiving relay through the sensor when the sensor is turned on, the applied voltage between the sensor connection line and the common line is set to a specified value. a line voltage detection circuit section that generates an output when the line voltage drops to the level;
a switching circuit unit that uses the detection output of the line voltage detection circuit unit to drive a switching unit that has a shorter operation time than the reception relay and that opens a starting end of either the sensor connection line or the common line by a switching operation; ,
a first timer circuit section that starts a time-limited operation from the start of operation of the switching circuit section and sets the switching circuit section in an on-operable state until time-up; A plurality of repeater main bodies are provided, each consisting of a second timer circuit section that sets the switching circuit section in an OFF state until a preset time elapses after starting, and a switching circuit section of each repeater main body is provided. Each repeater main body is provided with an extension terminal that connects the switching elements of each repeater main body in parallel, and the additional terminals of each repeater main body are connected so that when the switching elements of one of the repeater main bodies are switched, the switching means of each repeater main body is connected. A storage type repeater for a fire alarm system, characterized in that it is configured to drive all at once.