基于ARM和DSP的双核嵌入式视频监控系统

Dual-core Embedded video monitoring system based on ARM and DSP

摘要:

针对传统嵌入式视频监控设备集成度低，功能有限，响应速度慢，计算能力不足的问题，研究了一种基于ARM微处理器S3C6410与TMS320DM642 DSP双核体系结构的嵌入式视频监控系统。该系统采用CMOS摄像头采集视频数据，经DM642上算法处理后通过HPI高速并行接口传输给ARM处理器，ARM处理器负责对接收到的视频进行控制和LCD显示。重点阐述了ARM和DSP系统单元间的硬件连接方案，HPI接口驱动程序的设计实现，以及结合Linux异步通知和多线程技术的QT/Embedded客户端人机交互软件的编写。最后，移植了运动目标跟踪算法到DSP中并对整个系统进行实验测试，验证系统的性能。经实验证明，所设计的系统稳定可靠，视频清晰流畅，具有性能高、功耗和成本低、可扩展性强等优点，在嵌入式视频监控领域具有推广和使用价值。

Abstract:

To meet the requirements of video surveillance application, this paper presents a embedded video surveillance system on the basis of dual-core structure of ARM microprocessor S3C6410 and TMS320DM642 DSP. The system uses the CMOS camera to collect video data, which will be processed by DM642 and transferred to ARM processor through HPI high speed parallel interface. Then designed hardware connection scheme among system units of ARM and DSP. Moreover, program QT/Embedded application combining Linux asynchronous notification and multi thread technology to display and control the obtained video data. This system has advantages of high performance, low cost, low power consumption, good stability and expandability.