具有外同步功能的CCD视频监控摄像机硬件设计

Design of Hardware for CCD Video Surveillance Camera with External Synchronization Function

为了解决目标追踪中不同摄像机间识别目标的差异,在普通摄像机的基础上开发外同步功能.使用专用DSP微处理器CXD3172AR加EEPROM的驱动方案,利用同步信号发生器和锁相环电路实现外同步功能.设计了信号处理电路,实现清晰的图像输出.实验结果表明,视频监控摄像机输出视频信号稳定,实现外同步功能,图像分辨率达752×528,输出帧率50帧/秒.

In order to solve the problem that the target identified by different cameras was discrepant during the process of tracking ,the external synchronization function is developed based on the common camera .Also ,a program is proposed ,taking CXD3172AR ,a microprocessor specially used in DSP and EEPROM as driver ,then using synchronous signal generator and phase locked loop circuit ,to achieve external synchronization .Meanwhile a signal processing circuit is designed to achieve the output of digital format . T he experimental results show that the video surveillance camera had the features of stable output signal ,external synchronization ,image resolution up to 752 × 528 and output frame rate up to 50 frames/s .