基于手机相机的可见光成像通信实验系统设计

Design of Optical Camera Communication Experiment System Based on Camera of Mobile Phone

针对现有通信工程类专业课程实验大多以仿真为主,软硬件开发等实操类实验项目不足的问题,设计了一套基于手机相机的可见光成像通信实验系统。该系统利用上位机编辑信息,通过STM32单片机驱动放大电路,控制条形LED(Light Emitting Diode)的高频闪烁,实现信息的调制和传输。采用手机相机作为接收器,基于Android Studio开发手机应用程序,实现条带信息采集、解调和解码等功能,并实时显示发布信息。系统融合嵌入式软硬件开发、 Android开发等实用型技术,激发学生的学习兴趣。搭建的实验平台逐步实现编码、调制、传输、解调和解码,使学生对可见光通信原理有深入的理解,有助于专业教育理论课程的学习。

In order to solve the problem that experiments of communication engineering professional course focus mainly on simulation,and practice are insufficient,a set of optical camera communication experimental system is designed.Using the host computer to edit information,the system employs a STM32 single-chip microcomputer to drive the high-frequency flicker of the strip-typed LED(Light Emitting Diode) illumination via an amplifying circuit,thus realizing the modulated transmission of information.And the mobile phone with a smart camera acts as a receiver to collect,demodulate and decode the strip information to get real-time information to display,which is implemented by a mobile application using Android Studio.The system integrates a variety of professional and practical technologies,such as embedded software,hardware development and Android development,to stimulate students' interest in learning.The experimental platform realizes coding,modulation,transmission,demodulation and decoding step by step,so that students can have a deep understanding of the principle of optical camera communication system through experiments,which is conducive to the study of professional education theory courses.