北斗/GPS大坝实时监测与预警系统精度测试研究

Research on Accuracy Test of Real-time Monitoring and Early Warning System of Beidou/GPS for Dam

该文针对传统大坝安全监测频率低、费时费力且不能很好的反映抽水蓄能大坝全天候的变形情况和规律的问题,研制了基于北斗/GPS卫星导航系统的大坝实时外观智能监测与快速预警系统。为测试该系统的精度和稳定性,对系统运行期间采样数据进行了详细的统计分析。结果表明,经过卡尔曼滤波处理后的实时数据略有波动,但总体稳定;该系统获取的每小时平均数据可以检测到监测点1mm的变化量。

In view of problems of traditional dam,such as low safety monitoring frequency,time-consuming and laborious and hard to reflect the all weather deformation and regularity of the pumped storage dam,a real-time appearance intelligent monitoring and rapid warning system for dams is studied based on Beidou/GPS satellite navigation system. In order to test the accuracy and stability of the system,the sampled data during the operation of the system is statisticed and analysed detailly. The result shows that,after the Kalman filter processing,the data slightly fluctuates,but overall stability; The average data by per hour which is obtained by the system can detect the 1 mm changes of the monitoring point.