【摘要】 对通用无线分组业务GPRS(GeneralPacketRadioService)传输方式进行了论述 ,分析说明了它的多项优点 ,设计出一种以提高交通现代化程度为目的的新型车载信息平台 ,并结合实际测试情况从系统的整体功能、软硬件实现方法等多方面进行了描述 ,对登录GPRS网络的关键技术进行了重点介绍 ,并将提高系统性能的方法作了详细论述 .实测结果表明 :经完善的系统数据丢失率在 5 %～ 6%之间 ,数据延迟率低于 1 % ,具有相当的实用价值 ,并为其他车载监控系统的研制开发提供了具有一定参考意义的理论和实验研究结果更多还原

【Abstract】 Many outstanding advantages of GPRS transmission mode was analyzed, and a novel type of in-vehicle information platform was put forward, which focused on improving modernization degree of city traffic. Also, based on the actual test status, function of the system, the frame of hardware and the implementation of software and so on were elaborated. The key technique which used to log on GPRS network were emphasized, the ways and means on how to improve the performance of system were detailed . The test result shows the data lost rate is between 5%～6% and the data delay rate is less than 1% after consummating the system. It possesses high practical value, and provides some significative theory and test results for other in-vehicle monitoring system development.更多还原