一种新型多功能便携式听漏仪  

A Novel Portable Multi-Function Leakage Listening Detector

作　　者：崔建伟[1] 翟东力[2] 

机构地区：[1]东南大学仪器科学与工程学院,江苏南京210096 [2]解放军理工大学,江苏南京210007

出　　处：《测控技术》2009年第1期12-15,共4页Measurement & Control Technology

摘　　要：听漏仪是供水管网检漏的重要仪器。介绍了一种基于ATMEG8535微处理器的多通道多功能便携式听漏仪。它由基于压电陶瓷的高精度拾音器、前级放大电路实现声电转换;由ATMEG8535微处理器控制多路带通滤波器、精密检波器、AD转换器实现频谱分析,并具有频谱模式、选频模式和混频模式3种功能。实践表明,所研制的听漏仪能有效地检测供水管线的漏损。Leakage listening detector is an important instrument in finding water leakage point. A novel portable multi-function leakage listening detector based on Atmega8535 MCU is developed. It is based on the high-pre-cision piezoelectric ceramic pickups and the preamplifier to achieve sound electricity conversion, a multi-channel band-pass filter, a precision zero detector and AD converter are used to achieve the spectrum analysis,which are controlled by the Atmega8535 MCU. The instrument has three function modes： spectrum mode, selected frequency patterns and mixing frequency patterns. Practice shows that the leakage listening detector of developed can effectively detect the water pipeline leakage.

关 键 词：漏水检测 带通滤波器 频谱分析 给水管网 

分 类 号：TB565.2[交通运输工程—水声工程]