管道电位采集仪自动校准系统的研制

随着西气东输项目的开展,为确保输气管道处于良好的工作状态,避免腐蚀泄露导致安全事故的发生,管道电位采集仪的研究越发的重要,其校准对管道电位采集仪的应用也有着很重大的影响.文中设计一种基于LabVIEW虚拟仪器技术的管道电位采集仪自动校准系统,使用计算机通过USB接口和RS 232串口控制标准信号源、数字万用表和管道电位...

Development of automatic calibration system for the pipeline potential collector

With the development of West-East natural gas transmission project of China,in order to ensure that the gas pipeline is in good working condition and avoid safety accidents caused by corrosion leakage,the research of the pipeline potential collector becomes more and more important,and its calibration also has a significant impact on the application of the pipeline potential collector.An automatic calibration system of the pipeline potential collector is designed based on LabVIEW virtual instrument technology.The input and output of voltage and current,data exchange of standard signal source,digital multi-meter and pipeline potential collector are controlled by computer through USB interface and RS 232 serial port.The automatic calibration,data acquisition and data analysis and storage of the pipeline potential collector are realized.The multiple fitting and contrast of calibration acquisition data is conducted by least square method,therefore,time of the calibration can be greatly shortened to improve the calibration efficiency,and the hidden safety hazards caused by misoperation in manual calibration process can be eliminated.