Design of Image Acquisition and Preprocessing of Precise Linear Encoder Based on FPGA

Cai Tie-gen; Huang Ming-hui; Li Cheng-xiang; Yang Zhi-jun

doi:10.3969/j.issn.1007-7162.2016.03.011

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Design of Image Acquisition and Preprocessing of Precise Linear Encoder Based on FPGA

更新时间：2026-05-27

- Design of Image Acquisition and Preprocessing of Precise Linear Encoder Based on FPGA
- Vol. 33, Issue 3, Pages: 60-64(2016)
- 作者机构：
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- DOI：10.3969/j.issn.1007-7162.2016.03.011
  CLC：
- Online First：19 May 2016，
  
  Published：2016
- 稿件说明：
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蔡铁根, 黄明辉, 李成祥, 杨志军. 基于FPGA的精密光栅尺图像采集与预处理设计[J]. 广东工业大学学报, 2016, 33(3): 60-64.

Cai Tie-gen, Huang Ming-hui, Li Cheng-xiang, et al. Design of Image Acquisition and Preprocessing of Precise Linear Encoder Based on FPGA[J]. 2016, 33(3): 60-64.
蔡铁根, 黄明辉, 李成祥, 杨志军. 基于FPGA的精密光栅尺图像采集与预处理设计[J]. 广东工业大学学报, 2016, 33(3): 60-64. DOI： 10.3969/j.issn.1007-7162.2016.03.011.

Cai Tie-gen, Huang Ming-hui, Li Cheng-xiang, et al. Design of Image Acquisition and Preprocessing of Precise Linear Encoder Based on FPGA[J]. 2016, 33(3): 60-64. DOI： 10.3969/j.issn.1007-7162.2016.03.011.

摘要

针对目前利用图像的方法来分析精密光栅尺位移采集速度不高的问题，设计了一种以现场可编程门阵列(Field Programmable Gate Array

FPGA)为主控器件对光栅尺进行图像编解码和预处理的系统.系统主要包括SDRAM控制模块、CMOS传感器驱动模块、VGA显示模块以及图像算法模块.整个模块以Altera公司的Cyclone IV系列EP4CE10E22C8N作为主控芯片，Quartus II 15.0软件为开发平台，并经过反复测试实现各个模块功能，最终通过VGA实时显示预处理后的图像，为下一步DSP实现光栅尺位移的测量提供了可靠的预处理数据.

Abstract

According to the method of image acquisition for analyzing precision linear encoder displacement with the problem of low acquisition speed

an image and preprocessing system of encoding and decoding is designed in which FPGA is the core device. All modules are accomplished by taking Altera’s Cyclone IV series EP4CE10E22C8N as the main control chip

designed on Quartus II 15.0 which is software development platform. Each module has repeating tests to accomplish the function. The result is real-time displayed on VGA monitor and provides a reliable pretreatment data for next DSP realization of linear encoder displacement measurement.

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