Changing hardware parameters to improve the measuring accuracy of CCD laser autocollimator

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Changing hardware parameters to improve the measuring accuracy of CCD laser autocollimator

Article | 更新时间：2020-08-12

- Changing hardware parameters to improve the measuring accuracy of CCD laser autocollimator
- Optics and Precision Engineering Vol. 16, Issue 4, Pages: 726-733(2008)
- 作者机构：
  
  长春光机所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：20 October 2007，
  
  Revised：18 November 2007，
  
  Published Online：22 April 2008，
  
  Published：22 April 2008
- 稿件说明：
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史亚莉. 提高CCD激光自准直测角精度的硬件方法[J]. 光学精密工程, 2008,16(4):726-733

Changing hardware parameters to improve the measuring accuracy of CCD laser autocollimator[J]. Optics and precision engineering, 2008, 16(4): 726-733.
史亚莉. 提高CCD激光自准直测角精度的硬件方法[J]. 光学精密工程, 2008,16(4):726-733 DOI：

Changing hardware parameters to improve the measuring accuracy of CCD laser autocollimator[J]. Optics and precision engineering, 2008, 16(4): 726-733. DOI：

摘要

设计了一个CCD激光自准直测角系统。为提高系统的测量精度和实时性，对系统中的硬件参数进行研究，有效改善了采集到图像的质量。降低数据处理难度的同时，缩短了图像处理时间和提高了系统的测量精度。对系统中小孔光阑的直径，CCD的积分时间，会聚镜头的焦距值，采集卡的亮度和对比度参数分别进行分析，寻找优化值对系统进行改进。对改进前后的系统进行对比实验，实验结果表明，改进后系统的测角精度由原来的5.0″提高到了1.0″，处理一帧图像的时间缩短到了0.417s。

Abstract

A novel CCD laser autocollimator was discussed. In order to improve test accuracy and real-time performance of the measuring system

a method based on hardware parameters study was proposed to meliorate the quality of spot image. The computation of image processing can be simplified and the processing time was saved also the measuring precision was improved especially. Size of small aperture

CCD integral time

focal length of objective

brightness and contrast parameters of image data acquisition card were adjusted respectively to optimize the autocollimator. In the end

experiments of contrasting the accuracy of system before and after optimizing were carried out. The experimental results show that the measuring accuracy has been achieved from 5.0 arc-seconds to 1.0 arc-second in 0.417s.

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Related Institution

Key Laboratory of Micro/Nano Systems for Aerospace （Ministry of Education）， Key Laboratory of Micro and Nano Electro-Mechanical Systems of Shaanxi Province， School of Mechanical Engineering， Northwestern Polytechnical University

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State Grid Shanghai Electric Power Research Institute

University of Chinese Academy of Sciences

Changchun Institute of Optics，Fine Mechanics and Physics，Chinese Academy of Sciences

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