基于多互感机理的地下位移测量系统研究
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摘要
利用线圈互感原理,并结合硬件电路设计一种地下位移测量系统,通过测量单元的对称结构实现对地下垂直位移与水平位移进行检测。测量系统由若干个相同的测量单元通过RS485现场总线串联组成,测量单元将互感线圈与硬件电路集合于一体。本文设计了由运动控制器为核心的实验平台模拟地下位移进行电压值的采集与标定,通过所得的电压值结合偏最小二乘回归方法进行数学模型的建立,最终实现对地下位移的测量。所建的模型对垂直位移与水平位移量的预测值最大误差1.1 mm,大部分误差在0.5 mm以下。实验结果说明本文中所设计的测量系统能够对地下垂直位移与地下水平进行准确预测,相比于其他地下位移测量方法,该方法对被测体的检测更全面且有更大的测量范围更多的应用场合。
In this paper, the principle of coil mutual inductance, combined with the hardware circuit design of an underground displacement measurement system, through the measurement unit symmetrical structure to achieve the vertical displacement and horizontal displacement of the detection. The measuring system consists of several identical measuring units connected in series through the RS485 field bus. The measuring unit integrates the mutual inductance coil and the hardware circuit. In this paper, the experimental model is designed to simulate the underground displacement by the motion controller. The voltage value is collected and calibrated. The mathematical model is established by combining the voltage value and the partial least squares regression method to realize the measurement of the underground displacement. The maximum error of the model is about 1.1 mm for the vertical displacement and the horizontal displacement, and most of the error is below 0.5 mm. The experimental results show that the measurement system designed in this paper can accurately predict the vertical displacement and underground level. Compared with other underground displacement measurement methods, this method can detect the measured body more comprehensive and have more measurement range of the application.
In this paper, the principle of coil mutual inductance, combined with the hardware circuit design of an underground displacement measurement system, through the measurement unit symmetrical structure to achieve the vertical displacement and horizontal displacement of the detection. The measuring system consists of several identical measuring units connected in series through the RS485 field bus. The measuring unit integrates the mutual inductance coil and the hardware circuit. In this paper, the experimental model is designed to simulate the underground displacement by the motion controller. The voltage value is collected and calibrated. The mathematical model is established by combining the voltage value and the partial least squares regression method to realize the measurement of the underground displacement. The maximum error of the model is about 1.1 mm for the vertical displacement and the horizontal displacement, and most of the error is below 0.5 mm. The experimental results show that the measurement system designed in this paper can accurately predict the vertical displacement and underground level. Compared with other underground displacement measurement methods, this method can detect the measured body more comprehensive and have more measurement range of the application.
引文
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[10] 王少力,朱萍玉,陆洁,等.基于分布式光纤传感的形变探测管试验研究[J].光纤与电缆及其应用技术,2010,19(1):19-22.
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[13] 卡兰塔罗夫,Л.А.采伊特林.电感计算方法[M].北京:机械工业出版社出版社,1992:341-346.
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[2] 王利.地质灾害高精度GPS监测关键技术研究[D].长安大学,2014.
[3] PEI H F,CUI P,YIN J H,et al.Monitoring and Warning of Landslides and Debris Flows Using an Optical Fiber Sensor Technology[J].J.Mt.Sci.,2011,8:728-738.
[4] 王利,张勤,黄观文,等.GPS PPP技术用于滑坡监测的试验与结果分析[J].岩土力学,2014,35(07):2118-2124.
[5] ANTONELLO G,CASAGLI N,FARINA P,et al.A ground-based interferometer for the safety monitoring of landslides and structural deformations[C].IEEE,2003,218-220.
[6] WANG F W,OKUNO T,MATSUMOTO T.Deformation characteristics and influential factors for the giant Jinnosuke-dani landslide in the Haku-san Mountain area,Japan[J].Landslides,2007,4:19-31.
[7] 张青,史彦新.基于TDR的滑坡监测系统[J].仪器仪表学报,2005,26(11):1199-1202.
[8] 邬晓岚,涂亚庆.滑坡监测的一种新方法——TDR技术探析[J].岩石力学与工程学报,2002,21(5):740-744.
[9] 王振伟,朱新平.SGC地下位移监测系统在安家岭矿北端帮的应用[J].露天采矿技术,2005,(2):24-25+28.
[10] 王少力,朱萍玉,陆洁,等.基于分布式光纤传感的形变探测管试验研究[J].光纤与电缆及其应用技术,2010,19(1):19-22.
[11] 赵凯华.电磁学(M).第三版.北京:高等教育出版社,2011.343-344.
[12] 申屠南瑛.地下位移测量方法及理论研究[D].浙江大学,2013.
[13] 卡兰塔罗夫,Л.А.采伊特林.电感计算方法[M].北京:机械工业出版社出版社,1992:341-346.
[14] 王惠文.偏最小二乘回归方法及其应用[M].北京:国防工业出版社.1994:151-157
[15] Helland I S.On the structure of partial least squares regression[J].Communications in Statistics - Simulation and Computation,1988,17(2):581-607.