基于51单片机的医院病房紧急呼叫系统(无线语音)_毕业论文.doc

梧 州 学 院 毕 业 论 文 论文题目 医院病房紧急呼叫系统 摘要 本文介绍了一种以AT89S52单片机设计的医院病房无线呼叫系统。该系统由单片机系统、无线收发系统、功能开关、液晶显示器、等单元电路ospital Words Abstract This paper introduces a SCM(single-chip microcomputer) ATMEL AT89S52 MCU as a wireless calling system in hospital wards. This system consists of SCM system, wireless transceiver system, the functional switch, 1602 LCD, and by the main of voic ISD4004 as a voice systems unit circuit etc. What the use of the system is the wireless transceiver system which invlves a wireless transceiver module 315 of the PT2262 and PT2267 codec chip, and brings about the SCM’s half-duplex communication. The core controller optionaled SCM with low price and reliable performance. The call ext press then the host sound-light alarm, display the call numbers at the same time and at last the host give a reply by press the button is the main working principle of the system. The study shows that this system has the characteristics of easy to sue, fast, safe and reliable. And it can be used some social fields such as hospital, tea house, KTV, restaurant, etc. In the market economic system, especially in the service industry, Using it that can be more saving staffs, money as well as trouble. What more it can improves the company’s efficiency, enhances the image of services, and brings economic benefits. So it can be used as electronic product to research and development, In my opinion, it has a good value of promotion. Key word : SCM(single-chip microcomputer) Transmit and receive wireless The Wireless Calling System ISD4004 1602 目 录 引言……………………………………………………………………1 1.1 课题背景与来源………………………………………………………1 1.2 课题意义……..………………………………………………………2 1.3 课题设计的内容和方案………………………………………………2 系统概述………………………………………………………………3 2.1 系统组成………………………………………………………………3 2.2 系统的功能介绍及操作说明…………………………………………4 硬件组成与设计………………………………………………………5 整体电路图……………………………………………………………5 电源电路………………………………………………………………6 主控芯片单片机………………………………………………………7 主机功能按键介绍…………………………………………………… 液晶显示器