家庭智能紧急呼救系统设计(附电路图,程序)
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密 惠 保
家庭智能紧急呼救系统设计(附电路图,程序)(任务书,开题报告,中期检查表,外文翻译,毕业论文15400字)
摘要
当人们在家中遇到突发情况时,通过电话向急救中心(如110、119、120)或其它的通信终端进行报警或求助已成为一种必然的选择。目前一般家用电话基本可以满足普通用户在紧急情况下的使用要求,但对一些特定群体(如残疾人、有突发性疾病的患者等)并不适合。
本文介绍了一种以STC89C51RC单片机设计的家庭紧急呼叫系统。该系统由单片机系统、无线收发系统、功能开关、以ISD4004语音芯片为主的语音系统等单元电路组成。该系统所用到的无线收发系统采用315无线收发模块的PT2262和PT2272编解码芯片,利用单片机的串行半双工通信来实现。它的核心控制器采用价格低廉,性能可靠的单片机。该系统主要工作原理是分机按键呼叫,主机声报警。
研究表明该系统使用方便、快捷、安全可靠,可应用于家庭、医院、茶庄、KTV、餐厅等领域。在市场经济体制中,尤其在服务性的行业中,更省人、省钱、省心,更能提高企业效率,提高服务形象,带来更好的经济效益,可作为电子产品进行开发研制,具有很好的推广价值。
关键词:单片机技术 无线呼叫系统 ISD4004 STC89C51RC [来源:http://think58.com]
本系统的特点和可实现的功能以及具体的操作说明主要有:
1、当静止时,也就是说家里没有发出任何信号,主机也没有收到任何信号的时侯,分机蜂鸣器也不会响;
2、一旦家里有情况,家人在分机上按下按键时,蜂鸣器就会发出响声,提示家人正在或者已经发出呼叫信号。同时通过无线收发模块的发射电路发射出无线信号,呼叫的信息就传达到监护人的主机那里;
3、当主机收到分机的呼叫信号时,语音电路便开始工作,发出语音报警,提示他们家人有突发呼叫情况。
Abstract
When people meet the emergency at home by telephone to the emergency center (e.g., 110, 119, 120), or other communication terminal for alarm or turn has become an inevitable choice. At present general home phone basic can meet the requirements of the use of ordinary users in case of an emergency, but for some specific groups (such as the disabled, patients with sudden problems, etc.) are not suitable.
This paper introduces a SCM(single-chip microcomputer) ATMEL STC89C51 MCU as a urgency calling system in family.This system consists of SCMsystem, wireless transceiver system, the functional switch, 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 PT2272 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 alarm 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 family, 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.
Keywords: SCM(single-chip microcomputer) The Wireless Calling System ISD4004 STC89C51RC
目录
1 绪论 1
1.1课题背景与来源 1 [资料来源:www.THINK58.com]
1.2课题意义 1
1.3课题设计内容 2
1.4课题设计功能和要求 2
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 3
2.3系统总体设计分析 4
3 硬件组成与设计 5
3.1整体电路图 5
3.2电源电路 6
3.3主控芯片单片机 6
3.4语音电路 7
3.4.1语音电路图设计 8
3.4.2 ISD4004简介 9
3.4.3 LM386简介 12
3.5无线收发模块 12
3.5.1发射板 13
3.5.2接收板 14
3.5.3 编解码芯片PT2262和PT2272 14
4 软件设计 17
4.1主机程序流程图 17
4.2从机程序流程图 17
5 系统测试与分析 19
5.1系统设计过程 19 [来源:http://www.think58.com]
5.2单个模块的调试 19
5.3 PROTEUS软件仿真原理图 20
5.4系统测试达到的技术指标 21
结论 22
致谢 23
参考文献 24
附录 25
附录 A 25
附录 B 26 [资料来源:THINK58.com]