基于图像处理的可见光通信自动对准系统

doi:10.16180/j.cnki.issn1007-7820.2023.06.002

Abstract

Abstract:

In order to improve the communication quality of visible light downlink, an automatic alignment system for visible light communication based on OpenMV is designed in this study. The system realizes automatic recognition of indoor white LED is based on image processing and color recognition. The system uses gray-scale centroid method to determine the centroid coordinates of white LED, and the PID algorithm is used to drive steering gears to achieve the tracking of the indoor white light LED. The experimental results show that the automatic alignment system of visible light communication can realize the automatic alignment of white LED under various motion trajectories at the receiving distance of 2 m, and the maximum alignment angle error is less than 0.534°. In addition, whether the white LED is blocked or there is an interfering light source, system can still maintain the good tracking effect, indicating that system has good robustness.

Key words: visible light communication, automatic alignment, image processing, OpenMV, white light LED, color recognition, PID algorithm, robustness

CLC Number:

TN929.1

YUAN Zhenbo,BAI Bo,ZHANG Xiaowei,LUO Liujun,SHANG Tao. Automatic Alignment System for Visible Light Communication Based on Image Processing[J].Electronic Science and Technology, 2023, 36(6): 8-15.

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Automatic Alignment System for Visible Light Communication Based on Image Processing

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