公交报站毕业设计

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1、 共 页 第 页 中文摘要中文摘要 本设计主要解决如何方便、准确地指示乘客到站的问题，具有模拟人声进 行报站和预报站，对所报站数和站名进行文字显示和站名语音信息录放及站名 选择控制等功能。系统包括微控制器模块，语音录放电路，站数、站名显示模 组，键盘接口电路，复位电路及电源等。系统使用 51 单片机来控制语音合成芯 片和液晶显示模组。语音合成芯片 ISD4004,采用模拟数据半导体存储器直接存 储的专利技术，即将模拟语音数据直接写入单个存储单元，不需经过 A/D、D/A 转换，因此能够较好地真实再现语音的自然效果，避免了一般固体语音电路因 为量化和压缩造成的量化噪声和失真现象。配合液晶屏显示，

2、就使得该报站系 统更加实用。 关键字：单片机，语音提示，文字显示，公交报站 （500 字以内） 共 页 第 页 ABSTRACT The design mainly solve the problem of how to easily and accurately indicate that passengers arriving. It has the function of analog voice reporting and forecasting station on the text display ,reporting number and station name ,and vo

3、ice information recording and station name selection control. The system includes micro-controller module, voice recording and playback circuitry, station number, station name display modules, interface circuit of the keyboard, reset circuit and power supply. The system uses 51 Single-chip Microcomp

4、uter to control speech synthesis chip and liquid crystal display module. Speech synthesis chip ISD4004 adopts the patented technology for semiconductor memory directly simulated data storage of analog voice, that analog voice data is written directly to the individual storage units, not through A/D and D/A conversion, so we can receive the natural emergence of better voice effects and avoid the quantization of noise and distortion caused by the quantization and compression in the genera