市政技术2024，Vol.42Issue(1)：169-174,6.DOI:10.19922/j.1009-7767.2024.01.169
液压式沉降仪监测系统误差分析与修正研究
Study on Error Analysis and Correction of the Monitoring System of Hydraulic Settlement Device
摘要
Abstract
By analyzing the physical factors that affect the monitoring accuracy of hydraulic settlement devices,the impact degree of different factors on monitoring accuracy are obtained.Among them,the atmospheric pressure error,temperature error and noise error are the main factors causing the monitoring error.Therefore,error correction mea-sures are proposed for each kind of error.An independent closed isobaric system is formed by connecting gas pipes in series and always consistent with air pressure above the liquid surface of each settlement device to eliminate pres-sure errors;The temperature error can be ignored by expanding the radius ratio between cross-section of the con-stant level box and the liquid pipe and the temperature coefficients;That setting shielding layer for the pressure sen-sors,signal converting device and the transmission line eliminate the noise interference.The adaptability of the hy-draulic settlement device monitoring system to environment are improved by these measures so that it meets the pre-cision requirements of engineering monitoring and is conducive to the promotion of automated settlement monitoring.It has reference for data analysis and production of the same settlement device.关键词
液压式沉降仪/误差/封闭等压系统/温度修正/噪声消除Key words
hydraulic settlement device/error/closed isobaric system/temperature correction/noise elimination分类
信息技术与安全科学引用本文复制引用
张志强,王燕燕,纪文武,李罡,刘道学,杨晓徐..液压式沉降仪监测系统误差分析与修正研究[J].市政技术,2024,42(1):169-174,6.基金项目
国家自然科学基金项目(52121005 （）
52192662) （）
