JPS59155691U

JPS59155691U - fire alarm system

Info

Publication number: JPS59155691U
Application number: JP4704683U
Authority: JP
Inventors: 正浩菊地
Original assignee: 松下電工株式会社
Priority date: 1983-03-31
Filing date: 1983-03-31
Publication date: 1984-10-19

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図は火災報知システム全体の概略構成図、第２図は
従来の感知器の具体回路を示す回路図、第３図は従来の
中継器の具体回路を示す回路図、第４図は火災報知シス
テムに用いる信号の波形図、第５図は本考案の一実施例
のブロック部分の具体回路を示す回路図であり、１は基
台、２は感知器、３は中継器、４は受信機、５は地区リ
レー、６は信号処理回路、７は個別表示装置、１は回線
、Ｌ。Ｃは夫々線である。Figure 1 is a schematic diagram of the entire fire alarm system, Figure 2 is a circuit diagram showing the specific circuit of a conventional detector, Figure 3 is a circuit diagram showing the specific circuit of a conventional repeater, and Figure 4 is a fire alarm system. A waveform diagram of signals used in the notification system. FIG. 5 is a circuit diagram showing a concrete circuit of a block portion of an embodiment of the present invention, where 1 is a base, 2 is a sensor, 3 is a repeater, and 4 is a receiver. 5 is a district relay, 6 is a signal processing circuit, 7 is an individual display device, 1 is a line, L. C is each line.

Claims

[Scope of utility model registration request]

A district relay on the receiver side is inserted in series to one line of a two-wire line, and a sensor that turns on when a fire is detected is connected in series between the two wires of the line and a circuit in the base to which the sensor is installed and connected. In addition to connecting the circuits, a block is constructed on the same line by connecting a repeater, which has an address set for each in advance and uses the voltage at both ends of the circuit in the base as the power input voltage, between two lines of the line via a sensor. When a fire detector detects a fire, an exciting current is sent to the district relay through the detector and a circuit in the base, and a code signal containing address data and a return waiting period are sent from an individual display device on the receiver side. A signal consisting of a long pulse to be set is sent to the repeater of each block via the line, and when the called repeater operates the corresponding sensor, a return signal is superimposed on the line during the return waiting period and is transmitted individually. In a fire alarm system that transmits information to a display device to display the sensor operation at the address, the circuit in the base is equipped with a capacitor that is connected between two wires of the line via a sensor and is charged when the sensor is turned on. , a fire alarm system comprising a power input terminal of a repeater connected between both terminals of the capacitor.