管道惯性测绘系统研制及应用

针对管道中心线地理坐标信息的测量需求,基于惯性导航原理,研制了以管道内检测器为载体的管道中心线测绘内检测设备,并将其与漏磁内检测器结合进行工程应用。选取了5处已知点对测绘结果进行了验证,测绘结果和实际验证结果表明:研制的惯性导航内检测器能够准确测绘管道中心线轨迹坐标,在校验点间距约为2 km时,5个距校验点约1 km的已知点的平均测绘误差约为1.8 m;通过将惯性导航检测器与漏磁检测器的组合使用,可有效获取管道缺陷的地理坐标信息,提高了管道内检测缺陷检测定位的精度。

Development and Application of Intertial Mapping System for Pipeline

Based on the principle of inertial navigation,a pipeline centerline mapping system with the inner inspection equipment as carrier was developed to meet the measurement requirements of the pipeline centerline geographic coordinate information,and it was combined with the magnetic flux leakage inner inspection equipment for engineering application.Five given points were selected to verify the mapping results.Mapping results and the actual results show that the developed inner inspection equipment with inertial navigation system can accurately map the track coordinates of the pipeline centerline.When the distance between the calibration points is about 2 km,the average measurement error of the five reference points that are about 1 km away from the calibration points is about 1.8 m.By combining the inertial navigation system with the magnetic flux leakage inspection equipment,the geographic coordinate information of the pipeline defect can be obtained effectively,and the location precision of pipeline defect during inner inspection can be improved.