基于GPS的公交定位调度系统车载部分设计

【作者】 巩振宇；

【导师】 秦志光；

【作者基本信息】 电子科技大学 ， 软件工程， 2006， 硕士

【摘要】 基于GPS的车辆监控系统在我国开始应用是在20世纪90年代初,在2000年后才出现了较成熟的产品,这主要得益于短消息(SMS)的推广。目前的产品也多是利用SMS作为通讯方式,构建系统。但这种系统有其固有的缺点;短消息按条收费使得通讯费用较高,短消息还容易出现延迟、丢失的现象,降低了系统的实时性和可靠性。在中国移动推出2.5代移动通信技术GPRS服务之后,借助GPRS网络可以使移动数据传输的费用大大降低,因GPRS网络具有按流量收费、永远在线、较之SMS短信息传输成本低的特点,使其成为一种比较理想的移动数据传输方式。本文从系统总体设计的角度阐述了基于GPRS网络GPS监控系统的设计,实现了车辆终端的设计、定位数据的传输等。本文通过分析GPS定位系统、GPRS通信技术、GIS地理信息系统的原理和技术,研究了基于GPS的公交定位调度系统的应用。利用GPS全方位高精度的定位特性、GPRS永远在线、按流量计费、低成本的特点,完成实现了车载部分的设计。由于时间有限,本次研究实现的软件功能有限,但已具备了一个网络GPS监控系统的基本功能。相信随着研究的继续深入,功能会进一步完善。更多还原

【Abstract】 Supervising and controlling system of vehicle based on GPS had been applied in China from 1990s,but workable production appeared in 2000.These productions communicated by SMS(Short Message Service).But this system has disadvantage inhered:Communication fee is higher because of paying SMS one by one,and SMS also was delayed and dropped. This reduces the system real-time and reliability.After the 2.5 generation mobile communication technology GPRS brought into market by China Mobile Corporation, the cost of data transmission has been reduced. Because of GPRS has characteristics of charge in quantity, always online, lower cost, make it become the best solution of mobile data transmission. Based on research of GPS,GPRS,we gave a design of new system as a whole and the implement of design of terminal on car and transmission way of position data.With the analysis of GPS location, GPRS communication, GIS (geological information system) technique, we studied technology on GIS/GPS application. The system is designed by taking advantages of GPS’s full directions and precision, and the GPRS always online with low cost.Because of time the function that finished is limited, but it is the basic skill of a supervising and controlling system of vehicle based on GPS. With the research going on, the function may be more perfect.更多还原