毕业论文 基于单片机的公交车语音报站系统设计.doc

PAGE \* MERGEFORMAT IV PAGE \* MERGEFORMAT IV 毕业论文 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT I 毕业论文 基于单片机的公交车语音报站系统设计 摘 要 根据AT89S52单片机的特点和公交车报站特点，本文提出一种用单片机控制语音芯片进行公交车语音手动报站的方法。同时给出软硬件设计的方法，设计过程中包括硬件电路设计和软件程序编写两个方面。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，配合液晶屏显示，就使得该报站系统更加实用。利用AT89S52作为CPU进行总体控制，通过ISD4004语音芯片建立语音信息库，同时运用LCD液晶显示屏进行站数显示。当公交车到达某站点，用按键控制本系统工作，通过语音电路输出语音信息和提示。 关键字：AT89S52单片机；ISD4004语音芯片；LCD液晶显示屏 Abstract According to the feature of SCM AT89S52 and the characteristics of bus auto-reporter-calling, the article puts the method of using Sigel-chip microcomputer to control speech chip auto-reporter-calling. The method of realization of hardware has also been given, the whole process included hardware circuit designing and software program designing. 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 Microcomputer 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 .Besides, LCD makes the repor