基于AT89C51单片机的语音播报器的设计

摘要

现代社会人们工作日程繁多紧凑，随着生活节奏的加快，合理的安排时间和遵守时间是每个人的愿望，本文介绍的智能记事器，采用语音播报，随着语音芯片的普及，语音报播被广泛应用于车站报站器，语音型数字万用表，出租车语音报站器，排队机等。可快速直观的给人们提醒工作日程，将成为人们生活中的有力助手。

本文提出了基于AT89C51 单片机的语音播报器的设计方案。方案以单片机作为系统的控制核心，详细介绍了ISD 公司生产的ISD2560 语音芯片的优点及其使用方法。并且给出了用AT89C51 与ISD2560 构成的语音系统的硬件原图和软件设计方法。采用ISD 单片语音录音/放音集成电路系列中的ISD2560 实现了语音的存储和播放，使语音音质自然真实。ISD2560 不需要A/D 和D/A 转换，并且集成度高，能实现复杂的信息处理功能，真实的再现语音。实现了当按下开始键，启动录音，松开开始键，结束录音。结束录音后，循环播放所录音的基本功能。并且录放系统具有电路简明、应用方便、单片录放、不怕掉电、音色纯正、性价比高等特性。

关键词电气信息；单片机；语音芯片；ISD2560

Abstract

Modern social compact many people work schedule, with the pace of life speeds up, reasonable arrangements to comply with the time and the time is everyone's aspirations.This paper introduces the intelligent accounts regulator, with speech broadcast, with the popularization of pronunciation chip, voice newspaper has been widely used in the station broadcast stops device, voice type digital multimeter, taxi voice stops PaiDuiJi ware, etc. The paper introduced a smart notepad, a voice broadcast, fast intuitive to remind people work schedule, people living in a strong assistant.

In this paper a design program of voice broadcast device based on AT89C51 microcontroller is introduced in this paper. Single-chip microcomputer is the core of control system.This paper introduces the PIN function,operating model and using method of ISD2560 voice chip.Putting forword the hard structure and soft design method of the voice system consisted of AT89C51 and ISD2560. The use of single-chip voice recording ISD / playback IC ISD2560 series achieve voice storage and playback, and the voice is true ,natural ,quality. We achieve the basic function that when the start button is pressed , the device start to record and when the start button is releasd ,the device finish recording. Then broadcast what it record loop three times. And recording system has circuit concise and easy application, monolithic recording, not afraid off electricity, tone, pure, high performance-to-price characteristics.

Keywords Electrical Information；single-chip；voice chip；ISD2560

目录

1绪论 (1)

1.1 本课题的目的与意义 (1)

1.2 本课题在国内外研究概况及存在问题 (1)

1.3 本课题研究内容 (2)

1.4 本设计的主要任务要求 (3)

2 系统设计方案 (4)

2.1 总体设计方案 (4)

2.2 语音芯片的选择 (4)

3 硬件电路设计 (6)

3.1 protel 99 se介绍 (6)

3.2 电源电路设计 (7)

3.3 主机电路设计 (7)

3.3.1 AT89S51的特点 (7)

3.3.2 AT89S51的引脚介绍 (8)

3.3.3时钟电路 (10)

3.4 语音芯片ISD2560及应用 (10)

3.4.1 语音芯片ISD2560简介 (10)

3.4.2 ISD2560引脚功能及内部结构 (11)

3.4.3 ISD2560的语音播放电路 (13)

4 软件设计 (17)

4.1 AT89C51单片机定时器/控制器控制 (17)

4.1.1 工作模式寄存器TOMD (17)

4.1.2控制寄存器TCON (18)

4.2ISD2560录放音软件设计 (18)

4.2.1 ISD2560操作模式 (19)

4.2.2分段录放音 (19)

4.3keil C51介绍及其程序说明 (24)

4.3.1 keilC51介绍 (24)