Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2008-11-06
2011-12-06
Lieu, Julie (Department: 2612)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S606000, C340S611000, C340S618000, C340S626000, C702S051000, C073S040000
Reexamination Certificate
active
08072340
ABSTRACT:
A water leakage monitoring system including a water leakage position estimator which includes a periodic data acquiring unit for fetching predetermined-period flow rate pressure data stored in a monitoring device, and for fetching a signal related to a flow rate change and pressure changes expecting a water leakage reaction time calculating unit for calculating a pressure reaction time lag between two pressure changes, a pressure propagation velocity estimating unit 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 a flow rate change position estimating unit 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.
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Oishi Naoto
Yokokawa Katsuya
Yukawa Atsushi
City Of Kitakyushu
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Kabushiki Kaisha Toshiba
Lieu Julie
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