计算机工程 ›› 2018, Vol. 44 ›› Issue (10): 298-302.doi: 10.19678/j.issn.1000-3428.0049408

• 开发研究与工程应用 • 上一篇    下一篇

基于残差补偿的激光位移传感器测距方法

赵景海1,2,孙飞显1   

  1. 1.河南财政金融学院 信息工程系,郑州 451464; 2.四川大学 计算机学院,成都 610065
  • 收稿日期:2017-11-23 出版日期:2018-10-15 发布日期:2018-11-14
  • 作者简介:赵景海(1966—),男,硕士,主研方向为前端工程;孙飞显,教授、博士。
  • 基金项目:

    国家自然科学基金(61472460);河南省科技攻关计划项目(182102210214);河南省教育厅科研计划项目(2018-ZZJH-045)。

Laser Displacement Sensor Measurement Method Based on Residual Compensation

ZHAO Jinghai1,2,SUN Feixian1   

  1. 1.Department of Information Engineering,Henan Finance University,Zhengzhou 451464,China; 2.School of Computer Science,Sichuan University,Chengdu 610065,China
  • Received:2017-11-23 Online:2018-10-15 Published:2018-11-14

摘要:

激光三角法测距技术因线性拟合导致测量误差大、在大量程测距情况下线性度下降。为此,提出一种基于残差补偿的高精度激光位移传感器测距方法。分析基于激光位移传感器的距离测量方法,通过对传统激光三角法测距技术进行残差补偿、拟合方法优化,以减小由直接拟合所造成的理论误差。实验结果表明,相对激光三角法,该方法能够解决因直接线性拟合而导致测量误差变大的问题,并实现高精度的大位移测距。

关键词: 传感器测距, 激光三角法, 残差补偿, 质心提取, 线性拟合

Abstract:

Due to linear fitting,the measurement error of laser triangulation ranging technique is large,and the linearity decreases in the case of large range ranging.To solve this problem,a high precision laser displacement sensor measurement method based on residual compensation is proposed.The distance measurement method based on laser displacement sensor is analyzed.The residual compensation and fitting method are optimized by traditional laser triangulation technology to reduce the theoretical error caused by direct fitting.Experimental results show that compared with the laser triangulation method,this method can solve the problem that the measurement error becomes larger due to direct linear fitting and realize high precision large displacement measurement.

Key words: sensor measurement, laser triangulation method, residual compensation, centroid extraction, linear fitting

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