Title:
GAS LEAKAGE SOUND DETECTING SYSTEM
Document Type and Number:
Japanese Patent JP2002340722
Kind Code:
A
Abstract:
To provide a gas leakage sound detecting system which can detect a leakage sound of a gas generated in a gas piping system in a duct.
The gas leakage sound detecting system comprises a branch tube 3 having an engaging groove 2 at its distal end and provided at a gas duct in the gas piping system, and a microphone unit 4 having a microphone 5 having an engaging end 6 which can be mounted in the groove 2 of the tube 3 to collect an acoustic signal propagated through the duct, and a band-pass filter 7 which discriminates the acoustic signal corresponding to a frequency band of the gas leakage sound from the acoustic signals collected by the microphone 5 and which outputs the acoustic signal.
Inventors:
UEMATSU REPPEI
NANBA MITSUO
TAKEDA HIROSHI
SATO KOICHI
HAYASHI HIROYOSHI
TSUBOI KEIICHI
NANBA MITSUO
TAKEDA HIROSHI
SATO KOICHI
HAYASHI HIROYOSHI
TSUBOI KEIICHI
Application Number:
JP2001148711A
Publication Date:
November 27, 2002
Filing Date:
May 18, 2001
Export Citation:
Assignee:
KOATSU GAS HOAN KYOKAI
International Classes:
G01M3/24; F17D5/06; (IPC1-7): G01M3/24; F17D5/06
Domestic Patent References:
| JPH1062291A | 1998-03-06 | |||
| JPS5985953A | 1984-05-18 | |||
| JPH11280999A | 1999-10-15 |
Attorney, Agent or Firm:
Kenzo Fukuda (2 outside)