Computation on Sampling Frequency of Gas Pipeline Leakage Detection Ezperiment System

摘要：

During the experiments of gas pipeline leakage detection, the data acquisition card gathers the pressure signals and the flow signals. To ensure the gathering digital signal can reflect the real situation of the pipeline, and satisfy the demand for the leakage location accuracy, the data acquisition card should have certain sampling frequency. It is limited by the Nyquist theorem and the demand for the leakage location accuracy. We propose a computing method of sampling frequency in pipeline leakage detection experiment system. And a calculation example has been given. The results provide theoretical basis and technical support for the building of pipeline leakage detection experiment system.

关键词： sampling frequency leakage detection Nyquist theorem location accuracy

作者: Bai-li ZHAO jin-hui TAN Yu-fei

作者单位: School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China, 150090

会议类型: 国际会议

会议名称: 第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)

会议地点: 重庆

会议语种:英文

页码: 403-405

在线出版日期: 2009-08-01（万方平台首次上网日期，不代表论文的发表时间）