农业装备升降装置非接触式光纤位移传感器设计与试验
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摘要
为了解决农业设备位移的宽量程、高灵敏度非接触测量问题,提出一种基于Peanut-shape迈克尔逊干涉结构的非接触式光纤位移传感器。分析了光纤Peanut-shape迈克尔逊干涉原理,设计了将磁场与Peanut-shape结构形成的全纤式迈克尔逊干涉相结合的传感器结构,并通过磁场仿真,得到磁场强度曲线。建立了传感器应变标定系统和位移测试系统。试验结果表明:Peanut-shape迈克尔逊干涉的光纤传感器应变灵敏度达到1. 82 pm/με,是普通光纤的1. 5倍,线性度为0. 997;位移测试得到的光谱曲线与磁场仿真曲线结果一致,可以实现位移的测量,且线性拟合度达到0. 999。
In order to solve the problems of non-contact displacement measurement,wide-range and high sensitivity measurement in agricultural machinery equipment,a non-contact optical fiber displacement sensor based on Peanut-shape Michelson interference structure was proposed. The Peanut-shape fiber Michelson interference principle was analyzed,and the sensor structure combining the magnetic field and the Peanut-shape structure in fiber-type Michelson interference was designed,and by simulating the magnetic field,the magnetic field strength curve was obtained,theoretical analysis shows that a good sine wave can be obtained within the range of 1 ～ 3 mm between the sensing detector and the magnetic scale.While there is a distance range from 0 mm to 1 mm,due to the large contact area,a sawtooth-like wave is obtained,according to results of theoretical analysis,the distance between the experimental sensor head and the magnetic scale is determined. The strain calibration system and a displacement test system of sensor were established. Experimental result showed that the Peanut-shape Michelson interference fiber sensor strain sensitivity reached 1. 82 pm/με,which was 1. 5 times of that of bare fiber,and the linearity was 0. 997; the spectral curve obtained by the displacement test was consistent with the magnetic field simulation curve,displacement measurement can be achieved,and linear fitting degree was 0. 999. By encoding the permanent magnets,the direction of motion can be discerned.
In order to solve the problems of non-contact displacement measurement,wide-range and high sensitivity measurement in agricultural machinery equipment,a non-contact optical fiber displacement sensor based on Peanut-shape Michelson interference structure was proposed. The Peanut-shape fiber Michelson interference principle was analyzed,and the sensor structure combining the magnetic field and the Peanut-shape structure in fiber-type Michelson interference was designed,and by simulating the magnetic field,the magnetic field strength curve was obtained,theoretical analysis shows that a good sine wave can be obtained within the range of 1 ～ 3 mm between the sensing detector and the magnetic scale.While there is a distance range from 0 mm to 1 mm,due to the large contact area,a sawtooth-like wave is obtained,according to results of theoretical analysis,the distance between the experimental sensor head and the magnetic scale is determined. The strain calibration system and a displacement test system of sensor were established. Experimental result showed that the Peanut-shape Michelson interference fiber sensor strain sensitivity reached 1. 82 pm/με,which was 1. 5 times of that of bare fiber,and the linearity was 0. 997; the spectral curve obtained by the displacement test was consistent with the magnetic field simulation curve,displacement measurement can be achieved,and linear fitting degree was 0. 999. By encoding the permanent magnets,the direction of motion can be discerned.
引文
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[15]WU D,ZHU T,LIU M.A high temperature sensor based on a Peanut-shape structure Michelson interferometer[J].Optics Communications,2012,285(24):5085-5088.
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[17]陈亮.磁栅绝对直线位移传感器的研究[D].哈尔滨:哈尔滨工业大学,2008.
[2]叶秉良,朱浩,俞高红,等.旋转式水稻钵苗移栽机构动力学分析与试验[J/OL].农业机械学报,2016,47(5):53-61.YE Bingliang,ZHU Hao,YU Gaohong,et al.Dynamics analysis and tests of rotary transplanting mechanism for rice potseedling[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2016,47(5):53-61.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?file_no=20160508&flag=1.DOI:10.6041/j.issn.1000-1298.2016.05.008.(in Chinese)
[3]LIU S X.Innovation design:made in China 2025[J].Design Management Review,2016,27(1):52-58.
[4]张小龙,丁文俊,葛胜迅,等.乘用车驻车制动性能转毂测试与评价方法[J/OL].农业机械学报,2017,48(3):361-367.ZHANG Xiaolong,DING Wenjun,GE Shengxun,et al.Test and evaluation method for parking brake performance of passenger vehicle based on dynamometer[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2017,48(3):361-367.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?file_no=20170346&flag=1.DOI:10.6041/j.issn.1000-1298.2017.03.046.(in Chinese)
[5]武亮,彭东林,鲁进,等.基于平面线圈线阵的直线时栅位移传感器[J].仪器仪表学报,2017,38(1):83-90.WU Liang,PENG Donglin,LU Jin,et al.Linear time grating displacement sensor based on linear array of planar coils[J].Chinese Journal of Scientific Instrument,2017,38(1):83-90.(in Chinese)
[6]位耀光,张力彩,李道亮.智能光纤浊度传感器设计与试验[J/OL].农业机械学报,2017,48(增刊):199-204.WEI Yaoguang,ZHANG Licai,LI Daoliang.Research and experiment of intelligent optical fiber turbidity sensor[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2017,48(Supp.):199-204.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?flag=1&file_no=2017s032&journal_id=jcsam.DOI:10.6041/j.issn.1000-1298.2017.S0.032.(in Chinese)
[7]郭永兴,熊丽,孔建益,等.滑动式光纤布拉格光栅位移传感器[J].光学精密工程,2017,25(1):50-58.GUO Yongxing,XIONG Li,KONG Jianyi,et al.Sliding type fiber Bragg grating displacement sensor[J].Optics and Precision Engineering,2017,25(1):50-58.(in Chinese)
[8]张川,刘新阳,王毅,等.环流型光纤生物膜制氢反应器的底物传输与降解特性[J/OL].农业机械学报,2015,46(3):174-179.ZHANG Chuan,LIU Xinyang,WANG Yi,et al.Performance of substrate transport and bio-degradation within annular opticalfiber-illuminating biofilm reactor during continuous photo-H2 production[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2015,46(3):174-179.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?file_no=20150324&flag=1.DOI:10.6041/j.issn.1000-1298.2015.03.024.(in Chinese)
[9]ZOU Y,DONG X,LIN G,et al.Wide range FBG displacement sensor based on twin-core fiber filter[J].Journal of Lightwave Technology,2012,30(3):337-343.
[10]贾旻,孙伟.基于反射式塑料光纤传感器的微位移测量技术研究[J].电子测试,2017(9):45-46.JIA Min,SUN Wei.Research on micro-displacement measurement technology based on reflective plastic optical fiber sensor[J].Electronic Test,2017(9):45-46.(in Chinese)
[11]张燕君,田永胜,付兴虎,等.可调量程拉绳式光纤布拉格光栅位移传感器[J].光电工程,2017,44(6):626-632.ZHANG Yanjun,TIAN Yongsheng,FU Xinghu,et al.Adjustable range draw-wire type fiber Bragg grating displacement sensor[J].Opto-Electronic Engineering,2017,44(6):626-632.(in Chinese)
[12]ZHU L,LU L,ZHUANG W,et al.Non-contact temperature-independent random-displacement sensor using two fiber Bragg gratings[J].Applied Optics,2018,57(3):447-453.
[13]BABAEV O G,MATYUNIN S A,PARANIN V D.Linearization of positional response curve of a fiber-optic displacement sensor[J].IOP Conference Series:Materials Science and Engineering,2018,302(1):012051.
[14]郭俊,姬长英,方会敏,等.正反转旋耕后土壤和秸秆位移试验分析[J/OL].农业机械学报,2016,47(5):21-26.GUO Jun,JI Changying,FANG Huimin,et al.Experimental analysis of soil and straw displacement after up-cut and down-cut rotary tillage[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2016,47(5):21-26.http:∥www.jcsam.org/jcsam/ch/reader/view_abstract.aspx?file_no=20160504&flag=1.DOI:10.6041/j.issn.1000-1298.2016.05.004.(in Chinese)
[15]WU D,ZHU T,LIU M.A high temperature sensor based on a Peanut-shape structure Michelson interferometer[J].Optics Communications,2012,285(24):5085-5088.
[16]LU L,ZHUANG W,LI H,et al.Fiber Bragg grating-based measurement of random-rotation parameters[J].Applied Optics,2017,56(2):211-217.
[17]陈亮.磁栅绝对直线位移传感器的研究[D].哈尔滨:哈尔滨工业大学,2008.