ABNORMALITY DETECTION SYSTEM AND WATER METER

• Main Authors: NAWA MOTOYUKI, NAKABAYASHI YUJI, NAGAHARA HIDETOMO, FUJII YASUSHI
• Format: Patent
• Language: English; Japanese
• Published: 31.05.2023
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

To provide an abnormality detection system having a function for detecting water leakage regarding a water supply system such as a household water supply.SOLUTION: Ultrasonic transmitter-receiver 6A and 6B are added and arranged in flow measurement units 7A and 7B of respective water meters between two water meters 1A and 1B connected by a common pipe 13 and lead-in pipes 14A and 14B. Using the ultrasonic transmitter-receivers, an ultrasonic reception waveform between adjacent ultrasonic transmitter-receivers 6A and 6B is measured, and by comparing it with a reception waveform in a case of no leakage, water leakage in an ultrasonic propagation path p can be detected.SELECTED DRAWING: Figure 3 【課題】家庭用水道等の水供給系統に関し、漏水を検知する機能を有した異常検知システムを提供すること。【解決手段】共通配管１３、引込み管１４Ａ，１４Ｂで接続された２つの水道メータ１Ａ，１Ｂ間で、それぞれの水道メータの流量計測部７Ａ、７Ｂに付加配置した超音波送受信器６Ａおよび６Ｂを利用して、隣接する超音波送受信器６Ａ，６Ｂ間での超音波受信波形を計測し、漏れがない場合の受信波形と比較することにより超音波伝搬路ｐにおける漏水検知を行うことができる。【選択図】図３