基于NIOS Ⅱ的燃气管线泄漏无线检测方法  

Gas Pipeline Leakage Wireless Detection Method based on NIOS Ⅱ

作　　者：李春来[1] 杨理践[1] 

机构地区：[1]沈阳工业大学信息科学与工程学院,沈阳110780

出　　处：《中国电子商情（通信市场）》2010年第6期100-105,共6页

基　　金：国家科技支撑计划项目（2006BAJ16B03-02）

摘　　要：针针对城市燃气管线泄漏问题，提出了以NIOSⅡ软核处理器为核心的城市燃气管线泄漏无线检测方法。应用SOPC技术、nRF24L01无线收发模块实现无线数据传输；采用STCl2LE5A60S2单片机实现高速A／D数据采集、声信号程控带通滤波；采用高精度时钟芯片授时控制各组采集模块实现同步采集；采用虚拟仪器技术互相关算法漏点定位与结果显示。实验结果表明，该方法可分辨泄漏信号与人为破坏干扰等不同频率信号，检测定位20m管道压缩空气0．4MPa压强下3mm漏孔。Due to the urban area gas pipeline leak detecting problem, a pipeline wireless gas pipeline leak detection method based on a NIOS Ⅱ soft-core processor was designed. This method melts a lot of advanced electronic technique such as ST12C5A60S2 high-speed A/D data acquisition, programmable bandpass filter with adjustable center frequency,wireless data communication based on nRF24L01 wireless transceiver module, reference time to control data acquisition accurately and synchronously, LabVIEW, Cross-correlation algorithm and so on. Remote wireless leakage detect test result proves that the method can detect the leakage of 3 mm hole for 20 m pipeline under 0.4 Moa compressed air.

关 键 词：NIOS Ⅱ软核处理器 无线收发模块 程控滤波 泄漏检测 燃气管线 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]