JPS58195392U

JPS58195392U - Gas leak alarm equipment repeater

Info

Publication number: JPS58195392U
Application number: JP9277482U
Authority: JP
Inventors: 裕史島
Original assignee: ホーチキ株式会社
Priority date: 1982-06-21
Filing date: 1982-06-21
Publication date: 1983-12-26

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図は本考案の中継器を用いたガス漏れ警報設備の構
成を示したブロック図、第２図は線路抵抗を無視できる
中継器の定電圧回路の一実施例を示した回路図、第３図
は本考案による中継器の一実施例を示した回路図、第４
図は本考案の中継器による４状態の各々における送出電
圧を示したタイムチャート図である。１・・・中央監視装置、２ａ、２ｂ・・・ガス漏れ警報
器、３ａ、　　３ｂ・・・中継器、４・・・定電圧回路
、５・・・ダイオードブリッジ、６・・・中継器回路部
、８・・・ＰＬＬ回路、１０・・・２進カウンタ、４１
　’２・・・電源線、１３・・・呼出線、１４・・・応
答線。１−一一］−−− Ｅｎ１Fig. 1 is a block diagram showing the configuration of a gas leak alarm system using the repeater of the present invention, Fig. 2 is a circuit diagram showing an example of a constant voltage circuit of the repeater that can ignore line resistance, and Fig. Figure 3 is a circuit diagram showing an embodiment of the repeater according to the present invention;
The figure is a time chart showing the sending voltage in each of four states by the repeater of the present invention. 1... Central monitoring device, 2a, 2b... gas leak alarm, 3a, 3b... repeater, 4... constant voltage circuit, 5... diode bridge, 6... repeater circuit Part, 8... PLL circuit, 10... Binary counter, 41
'2...Power line, 13...Call line, 14...Response line. 1-11] --- En 1

Claims

[Claim for Utility Model Registration] Distinguishing the output of different voltage values indicating each state of a gas leak alarm, such as failure, normality, first gas leak alarm, and second gas leak alarm, from a central monitoring device. In the repeater of the gas leak alarm equipment, the repeater of the gas leak alarm equipment converts the voltage values corresponding to the respective states into state signals consisting of different voltage values in response to a call signal, and sends the state signals to the central monitoring device, When a gas leak alarm is determined, the central monitoring device sends a status signal indicating the failure and the second gas leak alarm at each call cycle.
A repeater for gas leak alarm equipment, characterized in that a switch circuit is provided for alternately transmitting a status signal indicating a gas leak alarm to a central monitoring device.