Title:
LEAK DETECTION DEVICE, LEAK DETECTION SYSTEM, LEAK DETECTION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2016/152131
Kind Code:
A1
Abstract:
A leak from a pipeline can be detected accurately, even in an environment where noise due to moving sources of noise occurs. This leak detection device of one aspect of the present invention is provided with: a subtraction unit for subtracting noise from non-moving sources of noise from a first signal, on the basis of the first signal which is acquired from a sensor installed at a location at which it is possible to detect leak noise from a pipe, and a second signal which is acquired from a sensor installed at a location at which it is possible to detect ambient noise, and further subtracting noise from moving sources of noise; and a leak assessment unit for assessing whether a leak exists, on the basis of the result of subtracting the noise from non-moving sources of noise and the moving sources of noise from the first signal.
Inventors:
ARAI YUMI (JP)
SENDA YUZO (JP)
HOSHUYAMA OSAMU (JP)
SENDA YUZO (JP)
HOSHUYAMA OSAMU (JP)
Application Number:
PCT/JP2016/001590
Publication Date:
September 29, 2016
Filing Date:
March 18, 2016
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G01M3/24
Domestic Patent References:
| WO2014051036A1 | 2014-04-03 |
Foreign References:
| JP2014219342A | 2014-11-20 | |||
| JPH06323945A | 1994-11-25 | |||
| JP4172241B2 | 2008-10-29 | |||
| JPH0522171B2 | 1993-03-26 |
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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