基于WebGIS的输电线路实时监测系统  

Real-time Monitoring System for Transmission Line Based on WebGIS

作　　者：尹海燕[1] 魏振华[1] 王晓辉[1] 弓帅[1] 

机构地区：[1]华北电力大学计算机科学与技术学院,北京102206

出　　处：《现代电力》2009年第5期66-70,共5页Modern Electric Power

摘　　要：对网络地理信息系统(WebGIS)、可伸缩矢量图形(SVG)、Ajax(异步JavaScript和XML)3项关键技术进行探讨,将基于XML标准的SVG矢量数据技术、Ajax框架的异步对象调用技术与GIS技术进行无缝整合,确定纵向静态表与横向动态表相结合的存储策略,构建一个新型的WebGIS应用系统,实现地图漫游、图层控制、实时数据展示及越限报警等实时监测功能。以山西省长治地区输电线路实时监测系统模拟运行环境为例,对页面中SVG图形的各个显示阶段进行功能和性能测试,结果表明系统有很好的稳定性和实时性。Three key techniques are studied including Web Geographical Information System（WebGIS）,Scalable Vector Graphics（SVG） and Asynchronous JavaScript and XML（Ajax）.The XML standard-based SVG vector data technology,Ajax framework＇s asynchronous object call technology and GIS technology are adopted for seamless integration.The storage strategy is determined,which combines the vertical-static tables with the horizontal-dynamic tables to build a new type of WebGIS applications.Functions of map cruising,layer setting,real-time monitoring like real-time data display and over range alarm are realized.Functions and performances of the SVG graphics on various display stages in real-time monitoring system for transmission line are testd based on WebGIS around the simulation environment of Changzhi Region,Shanxi Province.It shows that the system has fine stable and real-time performances.

关 键 词：WEBGIS SVG AJAX 输电线路 实时监测 存储策略 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] TM726[自动化与计算机技术—计算机科学与技术]