基于Flex无线传感技术的边坡位移监测研究
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摘要
基于Flex无线智能传感器技术设计可用于岩土工程的位移监测系统。主要思路是以Flex传感器技术为基础,通过标定试验得出Flex传感器信号与传感器弯曲角度对应的关系;模拟边坡加载试验中采集的数据信号,推算出土体变形角度和位移变化量,从而实现对边坡位移的监测。由标定结果可知,在0°～60°的测量范围内Flex传感器信号与弯曲角度呈现出良好的线性关系,其分辨率可达到0.3°～0.4°。基于边坡加载模拟试验,对Flex传感器与位移传感器测量的结果进行比较,得到了监测结果与位移传感器监测结果吻合良好。试验结果表明Flex传感系统能够有效地对边坡加载情况进行实时监测,在预防边坡方面有着良好的应用价值和前景。
Design of displacement monitoring system for geotechnical monitoring based on Flex wireless sensor technology. Main idea is based on Flex sensor technology. Through the calibration test,the relationship between the Flex sensor signal and the sensor bending angle was obtained. Then the data signal collected from the simulation slope loading test was used to derive the deformation angle and displacement distribution in order to realize the monitoring of slope displacement. From the calibration results,it can be seen that the Flex sensor signal and bending angle show a good linear relationship with a measurement range of 0°～60°,and the resolution can approach 0.3°～0.4°. Based on the slope loading simulation test,the results of the Flex sensor and the displacement sensor are compared,and the monitoring results are in good agreement with the displacement sensor. The test results show that the Flex sensing system can effectively monitor the slope loading condition in real time,which has good application value and prospect in preventing slope.
Design of displacement monitoring system for geotechnical monitoring based on Flex wireless sensor technology. Main idea is based on Flex sensor technology. Through the calibration test,the relationship between the Flex sensor signal and the sensor bending angle was obtained. Then the data signal collected from the simulation slope loading test was used to derive the deformation angle and displacement distribution in order to realize the monitoring of slope displacement. From the calibration results,it can be seen that the Flex sensor signal and bending angle show a good linear relationship with a measurement range of 0°～60°,and the resolution can approach 0.3°～0.4°. Based on the slope loading simulation test,the results of the Flex sensor and the displacement sensor are compared,and the monitoring results are in good agreement with the displacement sensor. The test results show that the Flex sensing system can effectively monitor the slope loading condition in real time,which has good application value and prospect in preventing slope.
引文
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[3] 龚晓南.21世纪岩土工程发展展望[J].岩土工程学报,2000,22(2):238-242.
[4] 熊自明,卢浩,王明洋,等.我国大型岩土工程施工安全风险管理研究进展[J].岩土力学,2018,39(10):3703-3716.
[5] 代志国,高侃,张俊,等.基于新型温补结构光纤光栅型压力传感器的研制[J].光纤与电缆及其应用技术,2019(1):12-16.
[6] Saggio G,Riillo F,Sbernini L,et al.Resistive Flex Sensors:A Survey[J].Smart Materials & Structures,2016,25(1):013001.
[7] Cheng Yin,Wang Ranran,Sun Jing,et al.A Stretchable and Highly Sensitive Graphene-Based Fiber for Sensing Tensile Strain,Bending,and Torsion[J].Advanced Materials,2016,27(45):7365-7371.
[8] 王翔东.露天矿边坡无线监测系统[J].金属矿山,1992(1):21-27.
[9] 孙学毅.KM-1型收敛计、SW型位移计及CGN型量测锚杆在大变形岩土工程中的应用[C]//中国岩石力学与工程学会第六次学术大会.2001:801-803.
[10] 马水山,王志旺,李端有,等.光纤传感器及其在岩土工程中的应用[J].岩石力学与工程学报,2001,20(s1):1692-1694.
[11] 陈赟,陈伟,陈仁朋,等.TDR联合监测土体含水量和干密度的传感器的设计及应用[J].岩石力学与工程学报,2011,30(2):418-426.
[12] Hong Chengyu,Zhang Yifan,Yang Yuyao,et al.A FBG Based Displacement Transducer for Small Soil Deformation Measurement[J].Sensors & Actuators A Physical,2019,286:35-42.
[13] Hong Chengyu,Zhang Yifan,AA Zamir.A Fiber Bragg Grating Based Inclinometer Fabricated Using 3D Printing Method for Slope Monitoring[J].Geotechnical Testing Journal ASTM,2019,.
[14] Hong Chengyu,Zhang Yifan,Zhang Mengxi,et al.Application of FBG Sensors for Geotechnical Health Monitoring,A Review of Sensor Design,Implementation Methods and Packaging Techniques[J].Sensors & Actuators:A Physical,2016,244:184-197.
[15] 贾洪雷,朱龙图,黄东岩,等.基于Flex传感器的免耕播种机播深自动控制系统[J].吉林大学学报(工学版),2019,49(01):166-175.
[16] Saggio G.Mechanical model of flex sensors used to sense finger movements[J].Sensors & Actuators A Physical,2012,185(5):53-58.
[17] Dhepekar P,Adhav Y G.Wireless Robotic Hand for Remote Operations Using Flex Sensor[C]//International Conference on Automatic Control & Dynamic Optimization Techniques.IEEE,2017.
[18] Saggio Giovanni,Riillo Francesco,Sbernini Laura,et al.Resistive Flex Sensors:A Survey[J].Smart Materials & Structures,2015,25(1):013001.
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