基于Pushlet服务器推送技术的Web车辆实时定位系统  

Web REAL-TIME VEHICLE POSITIONING SYSTEM BASED ON PUSHLET SERVER PUSH TECHNOLOGY

作　　者：王建霞[1] 邵永星 张晓明[1] 阮艳琴 

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050018

出　　处：《计算机应用与软件》2014年第4期77-81,共5页Computer Applications and Software

基　　金：河北省科技厅支撑项目(09243522D)

摘　　要：为满足车辆实时定位应用对实时性的要求,分析传统B/S方式只能"请求-应答"传送数据的不足,提出利用开源服务器推送技术框架Pushlet,实现服务器端数据实时推送,从而设计并实现一个真正意义上的Web车辆实时定位系统。该系统利用Pushlet技术将GPS车载定位仪发送到服务器端的数据直接推送到浏览器,然后利用电子地图进行实时位置的展现。通过测试并与传统轮询方式对比,发现Pushlet推送方式具有请求次数少、延时小、通信流量适中的特点,为Web实时定位应用提供了一种解决方案。To meet the real-time requirements on vehicle real-time positioning applications,according to the analyses of traditional B /S mode on its deficiency of adopting the work mode of＂request-response＂,we propose to achieve the real-time data push on server-side using open source technology framework of server push Pushlet,therefore design and implement a Web vehicle real-time positioning system in real sense. This system makes use of Pushlet technology to push the server-side vehicle location data,which comes from GPS car positioning instrument,to the browser directly,and then uses the electronic map to display the real-time location. By testing and comparing with traditional polling mode,it is found that the Pushlet push mode has he characteristics of less number of requests,less delay,and moderate communication traffic,it provides a solution for the Web real-time location applications.

关 键 词：PUSHLET 服务器推送 实时定位 GPS 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]