改进的多MEMS系统在猴子岩面板挠度监测中的应用研究  

Applied Research on the Improved Multi-MEMS System in Monkey Rock Panel Deflection Monitoring

作　　者：陈声震 蔡德所[1] 郑天翱 秦瑞 李书恒 CHEN Sheng-zhen;CAI De-suo;ZHENG Tian-ao;QIN Rui;LI Shu-heng(College of Hydraulic and Environment,China Three Gorges University,Yichang 443002,Hubei Province,China;College of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,Hubei Province,China;Yangtze Three Gorges Equipment and Materials Co.,Ltd.,Chengdu 610000,Sichuan Province,China)

机构地区：[1]三峡大学水利与环境学院,湖北宜昌443002 [2]三峡大学土木与建筑学院,湖北宜昌443002 [3]长江三峡设备物资有限公司,四川成都610000

出　　处：《中国农村水利水电》2021年第5期200-204,209,共6页China Rural Water and Hydropower

基　　金：国家自然科学基金重点项目(51439003)。

摘　　要：高面板堆石坝面板变形监测一直是坝工界的一个技术难题,常规仪器难以处理此问题。对此提出一种基于MEMS三轴陀螺仪和三轴加速度计的微惯性监测系统,用于大坝面板挠度变形监测。与旧监测系统相比,新监测系统成本更低,精度更高。对新监测系统的具体组成,监测原理进行了阐述。同时,为提高测量精度,采用无损卡尔曼滤波对监测信号进行处理。实验证明,无损卡尔曼滤波算法有效提高姿态解算的精度。将新监测系统用于猴子岩大坝面板挠度测量,并与FOG监测系统进行对比,结果表明,新监测系统的测量数据能够真实反映面板变形,且精度较高。Slab deformation monitoring of high-face rockfill dams has always been a technical problem in the dam industry,and it is difficult for conventional instruments to deal with this problem.In this regard,a micro-inertial monitoring system based on MEMS three-axis gyroscope and three-axis accelerometer is proposed to monitor the deflection and deformation of dam panels.Compared with the old monitoring system,the new monitoring system is cheaper and more accurate.The specific composition and monitoring principles of the new monitoring system are explained.At the same time,in order to improve the measurement accuracy,a lossless Kalman filter is used to process the monitoring signal.Experiments show that the lossless Kalman filter algorithm effectively improves the accuracy of attitude calculation.The new monitoring system was used to measure the deflection of the slab of the Monkey Rock Dam and compared with the FOG monitoring system.The results show that the measurement data of the new monitoring system can truly reflect the deformation of the slab with high accuracy.

关 键 词：惯性测量 大坝监测 无损卡尔曼滤波 面板变形 

分 类 号：TV168.1[水利工程]