文档介绍：青岛理工大学
毕业设计(论文)
题目公交车语音报站系统的设计
学生姓名:
指导教师:
自动化工程学院电气工程及其自动化专业六班
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,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
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 voice 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 puter 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 pression in the generally solid voice circuit. Besides, LCD makes the reporting system more practical.
KEY WORDS:Single-chip puter, Audio Prompt, Character Display, Bus-Stop Auto-Announce
目录
摘要 I
ABSTRACT II
第一章绪论 1
第二章方案设计 2
原理 2
框图 2
简介 3
第三章硬件设计 4
微控制器 4
复位 4
晶振 4
存储器 5
语音提示 7
内部结构 7
7
操作规则 9
ISD4004与外围设备的连接 12
文字显示 14
组成结构 14
引脚功能 15
液晶模组与单片机的连接 16
键盘接口 16
按键的确认 16
重键与连击的处理 17
按键防抖动技术 17
电源 20
芯片介绍 20
稳压电路 22
第四章软件设计 24
语音提示应用实现 24
放音程序