传感技术学报2016，Vol.29Issue(10)：1486-1492,7.DOI:10.3969/j.issn.1004-1699.2016.10.004
基于球形内检测器的管道内磁场测量
In-Pipe Magnetic Field Measurement Using Spherical Inner Detector
摘要
Abstract
Spherical inner detector has a board application prospect in pipeline safety detection. However ,due to the detector’s rotation,the collected magnetic field signal is always periodic,which cannot reflect the actual condi⁃tion of the in-pipe magnetic field directly and makes it difficult to calculate pipelines’orientation or discover the welds. A method is proposed to transfer the collected magnetic field signal in the rotating sensor frame to which in the stationary pipe frame. The relationship between them is deduced,and the mathematic model is built using the collected acceleration signal in the same rotating sensor frame as the acquired magnetic field signal. Experiment and algorithm are designed to verify the correctness of the model. The results show that the calculated magnetic field is in good agreement with the measured magnetic field both in value and trend,while the average of error’s ab⁃solute value is almost within 1μT.关键词
管道/球形内检测器/磁场/测量Key words
pipeline/spherical inner detector/magnetic field/measurement分类
信息技术与安全科学引用本文复制引用
陈冠任,李健,黄新敬,陈世利,徐天舒..基于球形内检测器的管道内磁场测量[J].传感技术学报,2016,29(10):1486-1492,7.基金项目
国家自然科学（61473205）；天津市科技兴海项目 （）
