JPS58138051U

JPS58138051U - Water leakage monitoring device

Info

Publication number: JPS58138051U
Application number: JP3620282U
Authority: JP
Inventors: 清加藤
Original assignee: 愛知時計電機株式会社
Priority date: 1982-03-15
Filing date: 1982-03-15
Publication date: 1983-09-17
Also published as: JPH0124613Y2

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図はこの考案の実施例のブロック線図、第２図はタ
イミングチャートである。１・・・・・・水道メータ、２・・・・・・パルス発信
器、３・・・・・・第１のフリップフロップ、４・・・
・・・短時間タイマ、５・・・・・・第１のラッチ、７
・・・・・・長時間タイマ、８・・・・・・第２のラッ
チ、１０・・・・・・第２のフリップ・フロップ、１１
・・・・・・表示手段。FIG. 1 is a block diagram of an embodiment of this invention, and FIG. 2 is a timing chart. 1...Water meter, 2...Pulse transmitter, 3...First flip-flop, 4...
...Short time timer, 5...First latch, 7
...Long time timer, 8...Second latch, 10...Second flip-flop, 11
...Display means.

Claims

[Scope of utility model registration request]

a pulse transmitter that transmits a flow rate pulse signal every fixed rotation of an impeller shaft of a water meter; a short-time timer that generates a sampling pulse with a relatively short sampling period t2;
A first flip-flop and a first latch that detect the presence or absence of a flow rate pulse signal during the sampling period t2, a long-time timer that generates a pulse with a relatively long period t1, and a period t□ of the long-time timer. A water leakage monitoring device comprising: a second flip-flop and a second latch for determining the presence or absence of water leakage by recognizing the output state of the first latch between the two, and a water leakage display means.