文档介绍：摘要
车载卫星定位系统,又称自动车辆定位系统,对它的研究起始于二十世纪七十年代。最初的应用是为了解决汽车文明带来的日益严重的城市交通问题。时至今日,车载卫星定位系统集合全球卫星定位技术,现代移动通信一技术,地理信息系统技术于一身,不仅在智能交通系统中担负主要作用,同时还可以提供防盗防抢劫报警,紧急医疗求助等多种服务。
本设计主要功能是研究基于GPS的公交车报站系统。该控制系统通过GPS定位功能,接收当前经度、纬度等信息,然后能通过主控制芯片将有效信息分离出来,然后经过程序的处理,将经度、纬度等信息显示到液晶显示屏上,然后对当前所处的站点进行语音报站。因此,具有很强的实用性。
本设计具体是使用STC89C52高速单片机作为主控制模块,利用简单的外围电路来驱动LCD1602液晶显示模块和ISD4004语音控制模块。利用STC89C52系列高速单片机本身强大的功能和内部E2PROM,可以很方便的实现单片机与PC机间的数据传输及存储,并能利用软件方便的进行显示内容的多样变化。因为采用串行传输方式,使本系统的可扩展性得到提升,便于多个显示单元的级联。
本文从GPS定位原理入手,详细阐述了GPS与各部分功能模块的布局设计,以及硬件电路的设计和软件的设计等。
关键词:GPS; STC89C52;ISD4004语音控制模块;LCD1602液晶显示屏
Abstract

GPS satellite positioning system, also known as automatic vehicle location system, and Research on it started in the een seventies. The initial application is to solve car civilization brought increasingly serious traffic problems in the city. Today, GPS satellite positioning system the collection of global satellite positioning technology, modern munication technology, GIS technology, not only in the essential part of intelligent transportation system, but also can provide anti-theft Emergency medical, emergency medical assistance and other services.
The design of the main function is based on the GPS bus stop system. The control system through the GPS positioning function, longitude, latitude, receiving the information, and then through the main control chip to be effective information isolated, and then through the process of treatment, the longitude, latitude and other information is displayed to the screen, and then on the current site of voice station reporting. Therefore, it is very practical.
This design is the use of STC89C52 MCU as the main control module, using simple peripheral circuit to drive the liquid crystal display LCD1602 module and ISD4004 voice control module. Use STC89C52 series high-speed microcontroller its powerful functions and internal E2PROM, can be very convenient to realize SCM and PC machine data transmission and storage, and can use the software fo