摘要：人们可以根据公交车自动报站系统来得知公交车前方到达地点，伴随着社会与科学的发展，公交车自动报站系统在日常生活中扮演着非常重要的角色。它是乘客和司机之间的媒介，无论是对于公交车司机师傅或乘客来讲，一个性能良好的报站系统是非常重要的。自动报站系统因其关系着双方的利益，所以对它的研究有着很大的应用价值。
本次研究的是用STC89C52单片机作为主模块的公交车自动报站系统，有键盘模块，LCD显示模块和语音存储模块等组成。在单片机中，语音存储模块采用ISD4004芯片，此芯片具有掉电存储功能，设计断电时进行对数据的保存。公交车名称、站点站名、文明用语都是由字符型液晶1602显示的，这些都可以通过按键来模拟。选用SCM进行的研究规模强大，使用较少的器件和适当的编程，设计要求较容易实现，避免了机械型开关用时过久造成的不稳定接触。39858
毕业论文关键词：单片机 ISD4004 1602LCD 公交车报站系统 STC89C52
Bus Automatic Report Station System Based on MCU
Abstract:People can know the site that the bus will arrive next according to the automatic bus stops system.Along with the development of society and science, bus stops system plays a very important role in our daily life.It is a medium between passengers and drivers, a good performance of the stops system is very important both for the drivers and the passengers. Because the automatically stops system’s relationship with the interests of both sides, the study of it has great application value.
This study is to use STC89C52 single-chip microcomputer as the main module of the automatic bus stops system,it also contains keyboard module, LCD display module and voice storage module, In the single chip microcomputer, peech storage module uses ISD4004 chip, this chip is off electricity storage capabilities,it can preservate the data when it meets a power failure. Bus station name, site name, civilization terminology can be displayed in the LCD1602, these can be simulated by buttons.The research choose SCM had powerful scale,uses fewer components and appropriate programming,.Designing requirements is easy to implement, and can avoid the instability of contact causing by the long time use of the mechanical type switch.
Keywords：MCU ISD4004 1602LCD Bus Automatic Report Station System STC89C52
目 录
1 引言 1
1.1 目的和意义 1
1.3 本系统主要研究内容 2
2.对总体方案的理解改进 2
2.1主控模块的改进和论述 2
2.2显示模块的改进和论述 3
2.3语音模块的改进和论述 3
2.4功率放大模块的改进和论述 3
2.5操作系统设计的简要论述 4
3. 总体方案论证与设计 5
3.1主控模块 5
3.1.1 STC89C52单片机功能 5
3.1.2 STC89C52单片机管脚图 6
3.1.3 STC8 9C52单片机的中断系统 7
3.1.4 STC89C52单片机的定时/计数器 7
3.2 LCD液晶显示器 7
3.2.1 基本液晶原理 7
3.2.2液晶模块简介 7
3.3键盘模块设计 9
3.4语音存储模块设计 9
3.4.1 相关芯片简述和引脚图 10
3.4.2SPI协议 10
3.5功率放大模块设计 11
3.6红外检测模块设计 12
3.5.1光电开关工作原理 12
3.5.2光电开关电路设计 13
4.系统软件设计 14 STC89C52单片机的公交车自动报站系统设计+电路图+程序:http://www.youerw.com/zidonghua/lunwen_40549.html