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1、ffacb13113e63a731a97049d41508f08.pdf1毕业设计（论文）报告题 目 公交车汉字显示系统系 别 尚德光伏学院 专 业 应用电子技术 班 级 学生姓名 学 号 指导教师 2011 年 4 月ffacb13113e63a731a97049d41508f08.pdf2公交车汉字显示系统摘要：本系统以 AT89S52 单片机为控制核心，以无线收发模块作为站台与公交车之间的信号传输；显示界面用液晶显示器 12864，配合按键进行人机界面处理，使得操作更加方便，人性化；采用录音时间较长的 ISD4004 语音芯片进行语音报价，使之有良好音质，并且保证放音时间足够用。主控部分
2、采用 STC89C52 单片机，单片机接收无线模块发送来的数据并且判断这个数据是哪个站点的数据，从而控制语音芯片播报语音并且控制 12864 液晶显示器用汉字显示站点的信息。无线发射部分核心器件选用无线发射模块 PT2262 相对于 GPS 模块价位很低，经济实惠，而且控制简单，只要把它的地址选择正确既可，最大可以有 531441种编码，对于一个城市来说足够用。无线接收模块采用 PT2272，它与 PT2262配套使用，效果极佳，只要在规定的范围即可正确接收 PT2262 发送来的数据，这个数据传送给单片机作处理。当前, 国内公交车报站的方式已经有了很大的改善， 由以前的售票员喊话报站改变为驾
3、驶员使用报站器手动报站，虽然使用手动报站器有了很大的进步，但是因为驾驶员需要在保证安全驾驶的前提下进行报站。所以经常出现错报、漏报的现象。而且让驾驶员在驾驶过程中进行报站， 也存在安全隐患。采用自动报站的方式可以大大减轻驾驶员的工作量，促进公交系统的现代化进程。 关键词：AT89S52 无线收发模块 PT2262 PT2272 液晶 12864 ISD 语音模块 自动报站ffacb13113e63a731a97049d41508f08.pdf3The bus Chinese displaying systemAbstract:This is an auto broadcast system d
4、esigned to be used on bus. It is based on the MCU AT89S52, and transmits information via a wireless transmitting module. A LCD and a touch screen are used to provide friendly interface, making interaction between user and the system more convenient. To provide a hi sound quality, we use a low-cost M
5、P3 module, which can also be used to play music when system is idle.Master parts STC89C52 SCM, single-chip module to receive wireless data and send the data to determine which site data, voice chips in order to control the voice broadcast and control liquid crystal display with 12,864 Chinese charac
6、ters display site information. Part of the core of wireless devices to launch a wireless transmitter module PT2262 selected for the GPS module with a very low price, affordable, and easy to control, as long as it can choose the correct address, the largest 531,441 kinds of encoding can, for a city i
7、s sufficient. Wireless receiver module using PT2272, and PT2262 supporting its use, excellent results, as long as the scope of the provisions of the right to receive the data sent PT2262, the data transmission to the single chip for processing. At present, the internal bus way station has been repor
8、ted to have improved considerably, the conductor from the previous call changed to stop the driver manually using the stop at stations, although the devices used to manually stop the progress of a great , but because the drivers need to ensure that the premise of safe driving under the station repor
9、ted. So often wrongly reported that the omission of the phenomenon. And let the driver in driving to stop the process, there are also security risks. The use of automatic way stop could greatly alleviate the workload of the pilot, and promote the process of modernizing public transportation systems.
10、 Keyword: AT89S52, wireless, LCD, touch screen, MP3, auto broadcastffacb13113e63a731a97049d41508f08.pdf4目 录前言 .5第一章:总论 .61.1 方案 .61.2 方案比较与论证 .71.2.1 对车站的识别 .71.2.2 控制部分 .71.2.3 显示 部分 .71.2.4 界面操作 .71.2.5 语音报站 .81.3 最终选择方案 .81.4 系统结构图 .8第二章:各部分电路原理与设计 .82.1 单片机主控模块的设计 .82.1.1 简介 .92.1.2 主要性能 .92.1.3 主要引脚说明 .102.2 无线收发模块 .122.2.1 编码解码芯片 PT2262/PT2272 芯片原理简介 .122.2.2 PT2262/2272 芯片的地址编码设定和修改 .172.2.3 DF 发射模块 .182.3 12864 液晶显示部分
