负温条件下激光位移传感器的标定

doi:10.7522/j.issn.1000-0240.2016.0185

冰川冻土 ›› 2016, Vol. 38 ›› Issue (6): 1583-1591.doi: 10.7522/j.issn.1000-0240.2016.0185

负温条件下激光位移传感器的标定

杜玉霞², 马巍², 赵淑萍^1,2, 张泽², 明姣²

1. 南京师范大学地理科学学院, 江苏南京 210023;
2. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃兰州 730000

收稿日期:2016-05-11 修回日期:2016-09-20 出版日期:2016-12-25 发布日期:2017-04-06
通讯作者: 赵淑萍,E-mail:shuping@lzb.ac.cn E-mail:shuping@lzb.ac.cn
作者简介:杜玉霞(1983-),女,甘肃武山人,工程师,2010年在兰州交通大学获硕士学位,现主要从事冻土研究相关的仪器设备的研制工作.E-mail:yuxiadu83@lzb.ac.cn
基金资助:
国家重点基础研究发展计划（973计划）项目（2012CB026106）；中国科学院寒区旱区环境与工程研究所人才基金项目（Y251C11001）；冻土工程国家重点实验室自主课题（Y252K61001）；国家自然科学基金项目（41023003）资助

Calibrating the laser displacement sensor under the temperatures below 0℃

DU Yuxia², MA Wei², ZHAO Shuping^1,2, ZHANG Ze², MING Jiao²

1. School of Geography Science, Nanjing Normal University, Nanjing 210023, China;
2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

Received:2016-05-11 Revised:2016-09-20 Online:2016-12-25 Published:2017-04-06

摘要/Abstract

摘要：

在使用激光位移传感器测试冻土位移中，由于测试现场环境条件恶劣，厂家给出的传感器线性度会降低，因此，需要对所有传感器在使用前应模拟使用时的环境条件重新进行标定。为验证激光位移传感器在冻土测试中的适用性，依据德国森萨帕特FT-50RLA220型激光位移传感器的结构、使用特点、技术指标，设计了由控温箱、标定支架、激光位移传感器、量块及数据采集装置组成的标定的装置，进行了不同负温条件下对激光位移传感器标定，并依据标定试验结果进行拟合参数修正，得到不同环境温度下的试验结果的线性度和迟滞特性。试验结果表明：不同的环境温度下，两个激光位移传感器与标准厂家测试曲线存在差异，不同负温条件下标定的两个激光位移传感器的拟合优度R²分别为0.999和1；线性度最大值分别为0.88%FS和0.32%FS。

关键词: 低温测量, 激光位移传感器, 标定, 线性度, 迟滞特性

Abstract:

When the laser displacement sensor is used in frozen soil experiment, the linearity will decrease because of the worse environment condition. Therefore, all sensors must be calibrated in the simulated environment conditions before a test. In order to verify the applicability of the laser displacement sensor in frozen soil experiment, according to the structures, features, technical index of the FT-50 RLA220 laser displacement sensor made by German SensoPart, a calibration device was designed, which is composed of temperature control box, calibration holder, FT-50 RLA220 laser displacement sensor, gage block and data acquisition device. The outputs of two displacement sensors under different temperatures and displacement points had been recorded. Based on the calibration results, the fitting parameters of sensors under different temperatures were corrected. The experimental results also show that calibration goodness-of-fit of the two laser displacement sensors are 0.999 and 1, respectively, with the maximum linearity of 0.88%FS and 0.32%FS, respectively.

Key words: low-temperature measurement, laser displacement sensor, calibration, linearity, hysteresis characteristics

中图分类号:

TP216

杜玉霞, 马巍, 赵淑萍, 张泽, 明姣. 负温条件下激光位移传感器的标定[J]. 冰川冻土, 2016, 38(6): 1583-1591.

DU Yuxia, MA Wei, ZHAO Shuping, ZHANG Ze, MING Jiao. Calibrating the laser displacement sensor under the temperatures below 0℃[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2016, 38(6): 1583-1591.

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负温条件下激光位移传感器的标定

Calibrating the laser displacement sensor under the temperatures below 0℃

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