US 12,276,573 B2
Water leakage position estimation system, water leakage position estimation method, and water leakage position estimation program
Yuudai Kamada, Tokyo (JP); and Toshiyuki Mine, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Appl. No. 17/925,537
Filed by HITACHI, LTD., Tokyo (JP)
PCT Filed Mar. 16, 2021, PCT No. PCT/JP2021/010566
§ 371(c)(1), (2) Date Nov. 15, 2022,
PCT Pub. No. WO2021/235064, PCT Pub. Date Nov. 25, 2021.
Claims priority of application No. 2020-089465 (JP), filed on May 22, 2020.
Prior Publication US 2023/0194378 A1, Jun. 22, 2023
Int. Cl. G01M 3/24 (2006.01); G01M 7/02 (2006.01)
CPC G01M 3/243 (2013.01) [G01M 7/025 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A water leakage position estimation system for estimating a water leakage position in a pipe network including a plurality of pipe routes, the water leakage position estimation system comprising:
a determination unit configured to determine whether a water leakage occurs in the pipe network based on a measured value of a vibration related to the pipe network that is acquired by a single sensor of one or more sensors provided in the pipe network; and
an estimation unit configured to estimate, when the determination unit determines that a water leakage occurs in the pipe network, a pipe route in which the water leakage occurs from the plurality of pipe routes based on the measured value and a predicted value of the vibration calculated for each pipe route from an installation position of the single sensor when a water leakage occurs in each pipe route.