班车实时定位系统的设计

为了满足新型班车连续高精度的定位需求, 采用GPS/LBS组合定位方法,提出了一种实时班车定位方案。主要设计了一种由STM32F103单片机、SIM7600CE模块集成的终端,支持GPS/LBS组合定位,并通过企业微信平台,查看车辆的实时位置。前期对于LBS异常数据采用基于几何距离的算法去除噪点,基于速度约束的漂移点判定异常,采用道格拉斯-普克算法进行轨迹压缩,最终实时位置、行车路线显示在客户端。本文重点使用了中值滤波对路线的轨迹进行优化,同时使用路点与道路匹配算法使得坐标吸附到主干道上。运行结果表明,系统位置指示精度高,查询方便。

Design of Real-time Regular Bus Positioning System

To solve the problem of continuous and high-precision positioning requirements of the regular bus, a real-time regular bus positioning scheme is proposed by using GPS /LBS combined method. This paper designs a new device integrated with STM32F103 and SIM7600CE module based on GPS and LBS technology, which uses an application to view the real-time positioning of the vehicle. First, the algorithm based on geometric distance is used to remove the noise for the LBS abnormal data, and then the drift point based on the speed constraint is used to determine the abnormality. The data is further uploaded to the service which uses data processing and data dumping. The Douglas puck algorithm is used to compress the track, Finally, the real-time position and driving route are displayed on the client through the mobile phone. In this paper, the major filter is used to optimize the track of the route, At the same time ,the matching algorithm between road points and the road are used to make the coordinates adsorb on the main road. The result shows that the position indication accuracy of the system is high and it is convenient for the user to inquire.