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1. 发明授权

US06404343B1 Water leakage monitoring apparatus 失效
标题翻译：漏水监测仪
公开(公告)号：US06404343B1
公开(公告)日：2002-06-11
申请号：US09599727
申请日：2000-06-23
申请人： Fumio Andou , Hiroshi Abe
发明人： Fumio Andou , Hiroshi Abe
IPC分类号： G08B2100
CPC分类号： G01M3/243
摘要： A water leakage detecting apparatus is capable of detecting water leakage of a water pipe precisely and at low cost. The water leakage monitoring apparatus includes vibration/electric converter for converting an acoustic vibration transmitted to a water pipe into an electrical signal. A signal discriminator processes an output signal of the vibration/electric converter to detect a signal of a predetermined band being held below a predetermined level continuously beyond a continuing condition to generate a sound interruption detection signal. A counter counts the number of occurrences of the sound interruption detection signal.
摘要翻译：漏水检测装置能够以低成本精确地检测水管的漏水。漏水监测装置包括用于将传输到水管的声振动转换为电信号的振动/电转换器。信号鉴别器处理振动/电转换器的输出信号，以将持续低于预定电平的预定频带的信号连续超过连续状态，以产生声音中断检测信号。计数器对声音中断检测信号的出现次数进行计数。

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