基于uClinux的嵌入式图像监控系统  

Embedded Image Monitoring System Based on uClinux

作　　者：闫旭[1] 黎福海[1] 柳笛[1] 李臻君[1] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082

出　　处：《计算机测量与控制》2008年第9期1262-1265,共4页Computer Measurement &Control

基　　金：国家自然科学基金资助项目(60375001)

摘　　要：介绍了一种基于uClinux嵌入式操作系统的无线图像监控系统,系统以ADI公司的Blackfin系列DSP为核心,实现了CMOS图像传感器的高速数据采集、JPEG静态图像压缩编码以及GPRS的无线数据传输;文章简要介绍了系统硬件平台的搭建,重点介绍了uClinux在Blackfin上的移植和配置过程、GPRS无线模块应用以及JPEG压缩算法的优化3个核心部分,特别详述了对PPI接口的配置和DCT变换的优化实现;实际的测试表明该系统很好地满足了设计要求,并且具有结构简单、功耗低、可扩展性强等特点。This article introduces an wireless image monitoring system based on Embedde OS-μClinux and an ADI DSP, BF533. High speed data acquisition of CMOS image sensor, JPEG Still Picture Compression and data transmission of wireless GPRS are accomplished. The hardware platform of system is introduced, configuration and transplantation of μClinux on Blackfin, implementation of GPRS Module, and JPEG algorithm optimization are described, which are three core parts. Besides, specific configuration of PPI interface and optimized process of DCT transformation are proposed. Experimental results demonstrate that this system better satisfies the requirement of design standard, and has characteristics of simple structure, low power-consumption, and strong expandability, etc.

关 键 词：UCLINUX操作系统 数据采集 Blackfin数字信号处理器 静态图像压缩编码 

分 类 号：TN911.73[电子电信—通信与信息系统]