. . . . . 编编 号号 本本科科生生毕毕业业设设计计（ 论论文文 ） 题目：题目：利用红外传递语音信号的系统设计 物联网工程学院 电子信息工程专业 学 号 0703080129 学生 安 强 指导教师 于凤芹 教授 二一二年六月 . . . . . 摘摘 要要 目前，国外语音通信系统主要是通过线、蓝牙、互联网、WIFI 和 GPRS 等，但是其具 有成本高、设计复杂、功耗高等缺点由于红外通信性好，不受无线频率使用管制，而 且在夜间无线静默状态下不增加被发现的概率，虽然红外激光无法直接传递语音信号， 但若采用红外编码的形式将信号编码调制到红外载波上，就可实现红外语音通信，从而 实现红外通信传递语音信号的系统设计要求 本文首先介绍了红外通信的基本原理、国外发展状况及用途，并就如何通过红外通 信的方式把语音指挥和调度指令下达给车队中的各车辆的系统设计问题，分别从硬件设 计和软件设计两个方面入手进行设计，从而实现该系统利用红外通信来传递语音信号， 保证车队在处于行进状态时，车队中车辆位置随时会发生变化，指挥车辆发出的指挥和 调度指令能正确地传达到各车辆 该语音联络系统以红外通信为基础，设计了以 STC89C52RC 单片机作为控制核心，进 行信息的采集和处理，利用矩阵键盘实现指令输入，经过红外编码将信号编码调制到红 外载波上，然后经红外发射电路发射出去，在接收指令时通过一体化接收头完成解调， 通过解码还原数据，同时利用语音芯片 ISD1760 和 LCD12864 型号液晶显示芯片来完成相 应的语音播报和液晶显示显示任务本设计利用两块 STC89C52RC 型号单片机分别控制的 红外信号的发射与接收，硬件部分包括红外发射模块与红外接收模块，其中红外发射模 块主要实现的功能是键盘指令输入、红外信号编码和红外发射，由键盘输入模块与红外 发射电路组成，红外接收模块主要实现的功能是红外信号接收、液晶显示与语音播报， 由红外接收电路、液晶显示电路和语音播报电路组成软件部分根据硬件设计，把系统 划分成发射部分与接收部分，其中发射部分主要包括键盘扫描程序和红外发射程序，接 收部分主要包括红外接收子程序、液晶显示子程序和语音播报子程序通过控制编程与 各芯片之间的协调合作，本系统基本实现了单片机语音联络的功能 关键词：关键词：单片机；红外通信；语音播报；液晶显示 . . . . . ABSTRACTABSTRACT At present, the voice communication system is mainly through the telephone lines, bluetooth, the Internet and WIFI and GPRS, etc, but it has the high cost and the design, power consumption higher shortcomings complex. Because infrared communication good secrecy, not affected by radio frequency to use control, and in the night silent state did not increase the wireless was found probability, although infrared laser can not directly transfer speech signal, but if you use infrared coding in the form of coding modulation signal to infrared carrier, can realize the infrared voice communication, so as to realize the infrared communication transfer speech signal system design requirements. This paper firstly introduces the basic principle of infrared communication, the domestic and foreign development status and purpose, and on the way through the infrared communication way voice command and scheduling orders to the team from each of the system design of the vehicle, separately from the hardware design and software design two aspects to carry on the design, so as to realize the system use infrared communication to deliver the speech signal, ensure the team marching in the state, the fleet vehicles position at any time soon change, command vehicle out of control and schedule command can correctly communicated to all vehicles. The voice contact system with infrared communication as the foundation, the design with STC89C52RC microcontroller as the core to control, information collection and processing, use keyboard input matrix realize instructions, through infrared coding will signal coding modulation to infrared carrier, then by infrared emission circuit launch out, receiving orders through the integration in receiving head complete demodulation, through the decoding reduction data, and to use voice chip ISD1760 and LCD12864 type LCD display chip to complete the corresponding speech broadcast and LCD display task. This design using two pieces of STC89C52RC model respectively of the single chip microcomputer control of the infrared signal the emitting and receiving, hardware including infrared emission module and infrared receiving modules, which infrared emission module mainly realizes function is the keyboard input, the infrared signal encoding commands and infrared emission, the keyboard input module and infrared emission of circuit, infrared receiving module mainly function of the realization of the infrared . . . . . signal is received, liquid crystal display and speech broadcast, by infrared to receive. KeywordsKeywords: SCM; Infrared communication;Voice broadcast;LCD display . . . . . 目目 录录 第 1 章 绪论 .1 1.1 课题研究的背景及意义.1 1.2 国外现状与发展趋势.1 1.3 红外通信概述.2 1.3.1 红外通信的基本原理.2 1.3.2 红外通信的特点.2 1.3.3 红外技术的用途.2 1.4 本论文的主要容.2 1.5 论文的结构安排.2 第 2 章 系统总体设计方案 .5 2.1 系统设计的主要工作.5 2.2 系统总体方案.5 2.2.1 系统总体思路.