基于ARM9的CMOS图像采集系统的设计与实现

Design and implementation of CMOS image acquisition system based on ARM9

采用32位ARM微处理器、CMOS图像传感器和CPLD为核心器件,设计实现面向机器视觉领域的CMOS图像采集系统,主要功能模块有SDRAM存储单元、图像采集单元、以太网传输模块、UART串口通信模块、Flash模块、电源模块等;与传统的"图像采集卡-PC-终端控制设备"模式的机器视觉系统相比,具有体积小、成本低、功耗低、实时性强、设计灵活等优点。实验测试结果表明,该图像采集系统硬件平台方案设计合理、可行,具有实际参考价值。该系统可应用于视频图像监控、图像自动检测、医疗及军事检测等场所,具有良好的应用前景。

With 32-bit ARM microprocessor, CMOS image sensor and CPLD as the core components, designing and implementing a CMOS image acquisition system especially made for machine vision field. Main function modules of the system include SDRAM storage module, image acquisition module, Ethernet transmission module, UART serial communication module, Flash module, power supply module, etc. Compared with the tradition machine vision system ＂image acquisition card - PC - terminal control equipment＂, it has the advantage of small volume, low cost, low power consumption, real-time and flexible design, etc. The test results show that the image acquisition system hardware design is reasonable and feasible, and has practical value. This system can be used in the fields such as video image monitoring, image automatic detection and military medical test, etc., and has a good application prospect.