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The Research of Sound Source Localization Based on Detection Ultrasonic

Author: WuLiJia
Tutor: ZhangMingLu
School: Hebei University of Technology
Course: Mechanical Engineering
Keywords: Ultrasonic wave Leak Locate Delay Cross-correlation LabVIEW
CLC: TP274.53
Type: Master's thesis
Year: 2011
Downloads: 53
Quote: 0
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Abstract


With the development of society, the pressure vessel is more and more widely in the production , life , people are more and more emphasis on the security issues of the pressure vessel . Pressure vessel leakage loss is huge , how quickly determine the leak and the positioning of the source of the leak , and gradually become an important issue and the direction of the people 's research . With the rapid development of the petrochemical industry , the pressure vessel leak detection has become the technical problems to be solved by the petrochemical industry . This article in the National 863 Project - dangerous chemical reactor leak detection and repair of mobile robot system ( item number : 2003AA421040 ) support , the main sound source localization . The main content of this research are as follows : First , the leakage process sound principles discussed . Leakage of the pressure vessel , particularly the gas leak is a blasting process , will produce the jet noise , acoustic means of detection of the occurrence of leakage can be used , determined by detecting leakage generated when the ultrasonic acoustic method for the detection and location of the leak source . Secondly , on the basis of in-depth comparison of various positioning methods and location algorithm to determine the the detect leaks positioning algorithm , and the derivation of the formula . Finally , the use of virtual instrument technology using LabVIEW software , set up a simple experiment platform , and experimental verification of the positioning algorithm .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies > Ultrasonic testing equipment
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