吴伟.固定式基坑测斜系统研制[J].电子测量技术,2016,39(4):27-30
固定式基坑测斜系统研制
Research of an in place slope monitoring system for excavation
  
DOI:
中文关键词:  基坑  测斜  水平位移  MEMS  倾角传感器
英文关键词:excavation  slope monitoring  horizontal displacement  MEMS  inclinometer
基金项目:
作者单位
吴伟 同济大学土木工程学院上海200092 
AuthorInstitution
Wu Wei Department of Civil Engineering, Tongji University, Shanghai 200092, China 
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中文摘要:
      基坑测斜工作是保障基坑安全的重要环节,但目前仍采用人工使用测斜仪监测的常规方法,不仅工作效率低,而且监测频率低,无法满足数据实时采集和自动化管理的要求。结合物联网技术,研究开发了一种基于倾角传感器的远程自动基坑测斜系统。本文介绍了其工作原理,系统构成,以及对其性能进行的试验。经测定,传感器分辨率为0.000002 rad,长期数据误差0.0002 rad,工程适用精度为0.0001 rad。在实验室环境下,系统防水性达到100 m水压,测量相对误差为0.12 mm/m,初步满足了基坑工程监测的远程自动化要求。
英文摘要:
      Slope monitoring is a critical step to ensure the safety of excavation. However, conventional manual method using inclinometer is unable to fulfill real time data acquisition and automated management because of its inefficiency and low monitoring frequency. So we use Internet of Things technology to develop a remote and automatic slope monitoring system based on electronic dip angle sensor. This paper presents the operating principle,constitution of this system and tests of its performance. According to the results, resolution, long term error and applicable accuracy of the sensor are 0.000002 rad, 0.0002 rad, and 0.0001 rad respectively. In the laboratory, the system has water repellency under the water pressure of 100 m and relative tolerance of 0.12 mm/m, which tentatively satisfies remote automation of excavation monitoring.
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