开关电容带通滤波器在管网泄漏点定位中的应用  

Application of switched-capacitor band-pass filter in water supply pipeline net leakage point orientation system

作　　者：张建利[1] 夏开新[1] 王丽燕[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090

出　　处：《哈尔滨工业大学学报》2006年第2期219-221,326,共4页Journal of Harbin Institute of Technology

摘　　要：为了研究供水管网系统漏失的检测、定位及处理,根据管网漏点水声波发生原理和水声波信号频率低、带宽窄的特点,提出了一种基于相关分析原理的泄漏点定位系统,介绍了前向通道中开关电容带通滤波器的设计.通过实际测试表明设计的滤波器满足系统要求,具有很好的滤波性能.When leakage takes place in a municipal pipe network, it will cause serious waste and an enormous economic loss of resources. Therefore the measuring, localization, and treatment of the leakage of the water supply network system are very essential. According to the principle of water acoustics occurring in pipe network leakage and acoustic characteristics of low bandwidth and low frequency of signal, we proposed a kind of pipeline net leakage point orientation system on the basis of a relevant analysis principle, which emphasizes on introducing the design with switch-capacitor band-pass filter in the foreword passageway. Through testing, it shows that the filter designed meets the system requirement with good fill performance.

关 键 词：管网泄漏点定位 开关电容 带通滤波器 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]