| 张 梅,张双双,袁宏永,付 明.燃气管道泄漏的次声源定位算法研究[J].电子测量与仪器学报,2020,34(3):187-194 |
| 燃气管道泄漏的次声源定位算法研究 |
| Research on infrasound source location algorithm of gas pipeline leakage |
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| DOI： |
| 中文关键词: 燃气泄漏 定位算法 次声波 传感器阵列 广义互相关法 时延 |
| 英文关键词:gas leakage location algorithm infrasound waves sensor array the generalized cross-correlation method time delay |
| 基金项目:国家自然科学基金（51874010）、国家自然科学基金（61170060）、重大创新平台及高校创新人才团队_矿山物联网研发团队(2017A053)资助项目 |
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| 中文摘要: |
| 针对城市燃气管道泄漏定位精度不高的问题，根据燃气管道泄漏时泄漏点产生次声波的特性，提出了一种燃气管道泄漏的次声源定位算法。该算法通过构建泄漏源的定位模型，利用传感器节点和泄漏点之间位置上的几何关系得到泄漏点位置。首先利用传感器阵列采集燃气管道泄漏时产生的次声波信号，并对该信号进行小波去噪处理，接着利用广义互相关法计算相邻传感器节点间的时延，最后结合定位模型计算出泄漏点位置。针对算法的信号处理部分进行了仿真，并在实验室进行了泄漏点定位的模拟实验。结果表明，在燃气管道泄漏定位中，算法的定位误差在1 m以内，具有较高的定位精度。 |
| 英文摘要: |
| Aiming at the problem that the underground gas pipeline leakage positioning accuracy is not high, according to the characteristic of infrasound waves generated with leakage points when gas pipeline leaks, an infrasound source location algorithm of gas pipeline leakage is proposed. The algorithm builds positioning model, and the position of the leak point is obtained by the geometric relationship between the sensor nodes and the leak point. Firstly, the infrasound wave signals generated by the gas pipeline leaks are collected through a sensor array, and the signals are processed by wavelet denoising. Then the time delay between adjacent sensor nodes is calculated by the generalized cross correlation method, and finally the location of the leak point is calculated by combining the geometric model of the leak location. The signal preprocessing part of the algorithm is simulated, and the simulation experiment of leak location is carried out in the laboratory. The results show that the positioning error of the algorithm is within 1 m in the gas pipeline leakage location, and it has high positioning accuracy. |
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