基于VxWorks的导航电子地图设计  

Design of navigation digital map based on VxWorks

作　　者：冯欣欣[1] 焦永和[1] 

机构地区：[1]北京理工大学机械与车辆工程学院,北京100081

出　　处：《计算机工程与应用》2007年第16期90-92,共3页Computer Engineering and Applications

基　　金：国家部委"十五"预研项目(the Pre- Research Project of the "Tenth Five- Year- Plan"of China Ministries and Commissions No.6130318)

摘　　要：结合嵌入式系统的特点,提出了基于VxWorks的嵌入式导航电子地图的基本程序框架。对周期信号的管理提出了用软时钟中断响应和周期信号调度表的解决方法;提出了以作业管理任务统一对地图操作类中断事件进行调度的方法;建立了相应的嵌入式电子地图数据结构和数据转换机制,提取并转化shape文件的几何数据以实现地图的绘制。通过一个具体案例说明了该电子地图方案的可行性和实用性。Combining with the features of the embedded system,the structure of the embedded digital map based on VxWorks is provided.By using the software timer ISR （Interrupt Service Routine） and the periodic signal scheduling table,a technique is provided to manage the periodic signals.A task manager is provided to scheduling all the interrupts and the tasks.The data structure of the embedded digital map and the mechanism of exchanging map data are established to draw the map with the data from the shape file.An instance of the embedded digital map is provided to show the feasibility of this technique.

关 键 词：导航电子地图 嵌入式应用 任务调度 SHAPE文件 

分 类 号：TP391.1[自动化与计算机技术—计算机应用技术]