摘要
为了降低开发图像传输系统的成本与时间,该文设计了一种低成本的基于STM32的图像采集与网络传输系统。以STM32F429单片机为核心进行设计,图像采集模块采用OV2640摄像头,使其输出压缩后的图像数据;网络传输模块基于以太网芯片LAN8720A完成单片机与PC端的网络通信,利用LwIP协议栈使系统实现了TCP/IP协议功能。同时使用了UCOS-Ⅱ操作系统,提高系统的稳定性和实时性。经过测试,该系统运行稳定,视频流畅,没有延时,帧率在15 fps左右。
In order to reduce the cost and time of developing image transmission system,a low-cost image acquisition and network transmission system based on STM32 was designed. The system was designed with STM32 F429 as its core. The image acquisition module used OV2640 camera to output compressed image data. The network transmission module was based on Ethernet chip LAN8720 A to complete network communication between MCU and PC,and LwIP protocol stack was used to make the system achieve TCP/IP protocol function. At the same time,UCOS-Ⅱ operating system was used to improve the stability and real-time performance of the system. After testing,the system runs stably,the video is smooth,there is no delay,and the frame rate is about 15 fps.
作者
姜艳茹
孟令军
尚桠朝
李岩
JIANG Yan-ru;MENG Ling-jun;SHANG Ya-chao;LI Yan(School of Instrument and Electronics,North University of China,Taiyuan 030051,China)
出处
《自动化与仪表》
2020年第12期45-49,53,共6页
Automation & Instrumentation
