摘要
随着社会经济的快速发展,车辆拥有量日益增多,对车辆进行科学化、正规化的管理已成为社会的一个热门需求。车辆监控系统正是在这种情况下应运而生,它融合了GPS技术、GIS技术和无线通信技术,能实现对车辆的远程监控,从而给车辆管理带来高效与方便。本文根据实际工程需求,给出了一套基于GPRS/GPS/GIS的远程车辆监控系统的解决方案。
基于南京理工大学先前开发的车辆监控系统,本方案针对新的项目背景,对原先系统设计中存在的性能问题进行分析,提出相关的解决方案并应用到该项目的设计中。本文的主要研究内容是车辆监控系统监控中心软件中相关功能点的改进设计,包括数据库的设计、转发中心数据处理逻辑的实现以及转发中心性能优化的研究。在数据库设计中,合理地利用XML数据类型,提高了数据库数据存取、解释性能;在转发中心数据处理单元的设计中,分析了协议解析器的作用,着重解决了数据在转发中心的缓存、数据的数据库存储、数据的包装处理以及下发信息管理等问题;在对转发中心运行性能进行相关研究时,主要解决了转发中心的内存垃圾回收问题。
With the rapid development of economic, the quantity of vehicles increases rapidly, the scientific、standardized management of vehicles has become a hot social needs. In this case, vehicle monitoring system was Came into being. It contains GPS technology, GIS technology and wireless communication technologies, and can achieve the remote monitoring of vehicles, brings about efficient and facilitative management of vehicles. To the practical demands of project, a set of solution on the remote vehicle monitoring system based on GPRS / GPS / GIS was designed in this paper.
The system was designed consulting the earlier development of the vehicle monitoring system of Nanjing University of Science & Technology, in the face of the background of the new project, analyzed the problem of the previous system, proposed solutions and applied to the design of the new system. The Main research in the thesis is the improved design of related function points of Monitoring Center of the Vehicle Monitoring System, including the design of database, the data-processing mechanism of the Data Service Center and the performance optimization of the Data Service Center. In the design of database, the data type XML was used to optimize the database, which enhanced the performance of data storage and data interpretation ; In the design of data processing unit of Data Service Center, analyzed the function of protocol parser ,focused on solving the data transmitted in the Data Service Center、data storage in the database、data processing and packaging and the management of the information sent to a vehicle; When researching into the performance of the Data Service Center, mainly solved the problem of Garbage Collection.
引文
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