Research on Key Parameters of Spatial Filter Velocity Measurement Algorithms Based on Linear Array CCD

Fei WANG; Chengrui ZHAO; Liangguang ZHENG

doi:10.13890/j.issn.1000-128x.2019.03.019

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Research on Key Parameters of Spatial Filter Velocity Measurement Algorithms Based on Linear Array CCD

更新时间：2021-12-13

- Research on Key Parameters of Spatial Filter Velocity Measurement Algorithms Based on Linear Array CCD
- Electric Drive for Locomotives Issue 3, Pages: 90-94(2019)
- 作者机构：
  
  1.宁波中车时代传感技术有限公司，浙江　宁波　315021
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2019.03.019
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Fei WANG, Chengrui ZHAO, Liangguang ZHENG. Research on Key Parameters of Spatial Filter Velocity Measurement Algorithms Based on Linear Array CCD. [J]. Electric Drive for Locomotives (3):90-94(2019)
DOI：

Fei WANG, Chengrui ZHAO, Liangguang ZHENG. Research on Key Parameters of Spatial Filter Velocity Measurement Algorithms Based on Linear Array CCD. [J]. Electric Drive for Locomotives (3):90-94(2019) DOI： 10.13890/j.issn.1000-128x.2019.03.019.

摘要

介绍了基于线阵CCD的空间滤波器的基本架构与原理，并通过MATLAB工具对基本型空间滤波器的算法进行了仿真验证；针对基本型空间滤波器频谱中存在的严重的基频干扰问题，提出了一种差分算法来解决，并进行了计算机仿真验证和真实皮带轮运动视频验证；对空间滤波器的各项参数设置对测量效果的影响进行了分析与仿真，确定了光栅周期宽度、周期数、CCD像素值、ADC采样分辨率、采样时间长度等参数的选择范围。基于线阵CCD结构的空间滤波器具有成本低、安装调试简单、噪声低等特点。

Abstract

The basic structure and principle of spatial filter based on linear array CCD were introduced, and the algorithm of basic spatial filter was simulated and validated by MATLAB. A differential algorithm was proposed to solve the problem of strong fundamental frequency interference in the spectrum of basic spatial filter, and computer simulation and real belt pulley motion video verification were carried out. The influence of the parameters of the filter on the measurement results was analyzed and simulated. The selection range of parameters such as grating period width, period number, CCD pixel value, ADC sampling resolution and sampling time length was determined. Spacial filter based on linear array CCD structure has the characteristics of low cost, simple installation and debugging, low noise and so on.

关键词

空间滤波高速列车重载列车速度测量线阵CCD

Keywords

spatial filterhigh-speed trainheavy haul trainvelocity measurementlinear array CCD

references

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