基于GPRS的智能公交站牌显示系统设计

针对当下交通状态，提出一种应用无线技术的智能公交站牌显示系统方案设计。该系统由无线传输模块、信息处理模块以及信息显示模块组成，实现了能够显示、反馈实时公交状态、位置信息、紧急信息的智能公交站牌显示系统。其中，无线传输模块应用SIM300-GPRS模组，主要负责收发所需数据信息；借助于STM32主控芯片的强大计算能力，信息处理模块通过对现有数据进行建模、算法修正等处理，计算出预到站公交的位置、状态等基本信息，并实时更新；信息显示模块负责通过LED屏幕向乘客传递公交状态、紧急事件以及公益广告等信息，并负责各种信息的显示调度。基于以上思想，已经完成智能公交站牌显示系统的设计。

Design of display system of intelligent bus stop board based on GPRS

For the current traffic conditions, presents a design of intelligent bus stop board display system with wireless technology. The system is composed by wireless transmission module, the data processing module and an information display module. Achieved an intelligent bus stop board display system which not only be able display bus status, location, the emergency information, but also the real-time feedback. Among them, the wireless transmission part is mainly in charge of sending and receiving data needed with SIM300-GPRS module. By means of powerful computing capabilities of the controller chips STM32, Information processing part processes the existing data with math models and correction algorithm to calculate the bus location, status and other basic information and real-time updates the data. Information display part mainly informing the passengers the bus status, emergency and public service ads and other information with the LED, and is in charge of which information to he presented on LED. Based on these ideas, the design of intelligent bus stop board display system has been completed.