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    • 9. 发明公开
    • WATER LEAKAGE MONITORING SYSTEM
    • 漏水监测系统
    • EP2060896A4
    • 2017-02-22
    • EP07806214
    • 2007-08-29
    • TOSHIBA KKCITY OF KITAKYUSHU
    • YUKAWA ATSUSHIYOKOKAWA KATSUYAOISHI NAOTO
    • G01M3/28G01M3/04
    • G01M3/2815
    • There is disclosed a water leakage monitoring system comprising a monitoring device (12) acquiring and storing flow rate and pressure data of a flow meter (5) and a pressure gauge (6a, 6b) located in each water distribution block and a water leakage position estimator (13), the water leakage position estimator (13) including periodic data acquiring means (21) for fetching predetermined-period flow rate pressure data stored in the monitoring device, and for fetching a signal related to a flow rate change and pressure changes expecting a water leakage reaction time calculating means (22) for calculating a pressure reaction time lag between two pressure changes pressure propagation velocity estimating means (23) for estimating a pressure propagation velocity using the pressure reaction time lag and a distance between two pressure gauges located in a water distribution block stored in a pipeline network map data and flow rate change position estimating means (32) for receiving a signal related to the flow rate change, and estimating a flow rate change position using pressure propagation velocity and a flow meter and pressure gauge locating positions of the pipeline network map data.
    • 10. 发明公开
    • DRIPPING ALERT FUNCTION
    • TROPFALARMFUNKTION
    • EP3119943A1
    • 2017-01-25
    • EP14711516.6
    • 2014-03-20
    • Husqvarna AB
    • GUNGL, JohannesSOOR, Florian
    • E03B7/00E03B7/07F17D5/02G01M3/18G01M3/28G01F15/075
    • E03B7/071E03B7/003G01M3/2815Y02A20/15
    • A water distribution system (10) may include a pump assembly (30) and a controller (60) that controls operation of the pump assembly. The controller (60) may be configured to control cycling of the pump assembly on and off based on pressure and flow conditions detected in the system, track a first period of time, count a number of on/off cycles of the pump assembly, determine whether to make a state change based on the number of on/off cycles and the first period of time, and, in response to determining to make the state change, set a timer configured to count a second period of time that is longer than the first period of time and counting on/off cycles during discrete periods of time for the second period of time to initiate a fault response in response to a predetermined number of on/off cycles being detected during each discrete period of time during the second period of time or if the second period of time has lapsed, or initiate a recovery from the state change in response to the predetermined number of on/off cycles not being detected during at least one discrete period of time during the second period of time.
    • 配水系统(10)可以包括泵组件(30)和控制泵组件的操作的控制器(60)。 控制器(60)可以被配置为基于在系统中检测到的压力和流量条件来控制泵组件的循环,跟踪第一时间段,计算泵组件的多个开/关循环,确定 是否基于开/关循环次数和第一时间段进行状态改变,并且响应于确定使状态改变,设置定时器,其被配置为对比第二时间段长的第二时间段进行计数 第一时间段,并且在第二时间段的离散时间段期间计数开/关循环,以响应于在第二时段期间的每个离散时段期间检测到预定数量的开/关循环来发起故障响应 或者如果第二时间段已经过去,或者响应于在第二时间段期间的至少一个离散时间段期间未被检测到的预定数量的开/关循环,从状态改变开始恢复 。