针对当前嵌入式设备图像采集装置功耗大、成本高的问题,提出了一种低成本、低功耗的实时系统设计方案。在硬件设计方面,采用OV2640 CMOS传感器作为采集前端,CH565W芯片作为主控芯片进行控制与处理,RTL8211FS作为千兆以太网物理层芯片进行数据收发。在软件设计方面,介绍了具有双缓冲模式的图像采集程序、数据收发流程以及低功耗管理程序。该系统测试结果表明,图像传输清晰流畅,功耗、成本以及实时性满足设计要求。

Aiming at the current problems of high power consumption and high cost performance of image acquisition devices for embedded devices,a low-cost and low-power real-time system design program is proposed.In the hardware design,OV2640 CMOS sensor is used as the acquisition front-end,CH565W chip is used as the main control chip for control and processing,and RTL8211FS is used as the Gigabit Ethernet physical layer chip for data transmitting and receiving.For the software design,the image acquisition program with double buffer mode,data transceiver flow and low power management program are introduced.The test results of the system show that the image transmission is clear and smooth,and the power consumption,cost,and real-time performance meet the design requirements.