地铁隧道沉降变形实时监测系统误差分析  

Error Analysis of Metro Tunnel Settlement Deformation Real Time Monitoring System

作　　者：周奇才[1] 傅天宏 熊肖磊[1] 范思遐[1] 周杰[1] 何自强 张恒 

机构地区：[1]同济大学机械与能源工程学院,上海201804 [2]上海地铁盾构设备工程有限公司,上海200120

出　　处：《测控技术》2014年第2期120-123,共4页Measurement & Control Technology

基　　金：上海市科委科研计划项目资助项目(08201202103)

摘　　要：根据图像传感器网络的沉降变形监测原理,建立地铁隧道沉降变形监测系统的数学模型。利用误差分析理论对系统测量误差进行分析,提出沉降变形监测系统的误差累积计算模型。给出在满足1 km的测量距离上获得±3 mm的测量精度条件下,图像传感器应满足的精度要求。分析该监测系统控制累积误差随监测点数增多而扩大的有效性,为提高监测系统的精度提供理论依据。Based on the settlement monitoring principle of the image sensor network, the mathematical model of the subway tunnel settlement deformation monitoring system is established. Using the error analysis theory to analyze the system measurement error, the error accumulation calculation model of the settlement deformation monitoring system is proposed. The precision demands of the image sensor is presented under the condition in measuring distance of 1000 m and accuracy of ± 3 mm. The effectiveness analysis of the monitoring system to control the accumulated error expansion with the increased monitoring points can provide theoretical basis for improving the accuracy of the monitoring system.

关 键 词：地铁隧道 沉降变形 累积误差 图像传感器 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]