基于DSP+ARM的双核结构数字视频监控系统设计

数字视频监控系统以其直观、方便和信息内容丰富的特点而被广泛应用，笔者采用DSP+ARM双核结构，选用TMS320DM642为图像采集处理，AT91RM9200为实时控制，DSP通过CCD摄像头对特定的区域采集视频图像，并由视频解码芯片进行视频解码，处理后的数字视频信号由DSP通过视频运动检测算法进行图像处理，异常情况时则立刻由DSP向ARM施加中断信号，并将识别处理后的结果全部发送过去.ARM对DSP图像采集进行实时控制，并配合DSP将图像处理的结果显示出来，在恰当的时机触发外部控制器，从而实现一定的对外控制功能.实验验证：该系统稳定性、可靠性、灵活性都得到了增强.

Binuelear Digiatal Video Monitoring System Design Based on DSP+ARM

Digital video monitoring system is widely applied due to its intuition,convenience and colorful information.The author uses DSP+ARM binuclear structure,TMS320DM642 in image acquisition and processing,and AT91RM9200 in real-time control.The video image of a certain area is acquired by DSP through CCD camera,and video decoding is finished by relevant chip.The processed digital video signals are processed by DSP through video montion detection algorithm.If there is abnormal condition,DSP will transmit interruption signal to ARM,which performs real-time control over DSP image acquisition and helps to show the image processing results.ARM can trigger external controller and then can achieve external control.Experiments show that this system is stable,reliable,and feasible.