基于ZigBee协议的图像传输系统的研究

摘要

ZigBee技术是随着工业自动化对于无线通信和数据传输的需求而产生，有很多优点，但是由于本身传输速率低不利于传输图像。文章对在居家养老系统中利用 ZigBee 网络进行图像传输进行了研究，采用 VC0706PREB 芯片和S3C44B0X进行图像采集和处理，通过串口将图像数据发送到由CC2431ZDK构成的MESH结构无线传感器网络，并最终在监护中心进行显示，达到更好的监护效果。经测试，采集一幅320×240的图像压缩后最终大小为12KB左右，图像的清晰度和实时性也可以满足实际需求。文章所提出的传输系统功耗低、稳定、安全，为建立基于社区范围、需要实时监护、提高救治率、同时减小病人负担的远程医疗监控网络提供了思路，具有一定的实用价值。%ZigBee technology has emerged with the requirement of industrial automation for wireless communication and data transmis-sion,it has many advantages,but is inconvenient for image transmission because of its low transmission rate. It has made the research of image transmission through the ZigBee network in the home care system,use VC0706PREB and S3C44B0X for image acquisition and processing,sent image data through serial port to wireless sensor network which is MESH architecture and consists of CC2431ZDK,at last,the image will be showed on screen,this effect is better. After testing,get the 12KB image in the resolution of 320×240,the image resolution and the instantaneity could meet the requirement of practical application. It presents ideas for building remote medical monito-ring network which can improve the treatment rate,reduce the patient’s burden and this transmission system is low consumption,steady, security,has certain applicability.