基于GSM网络的家居远程监控系统

摘 要

在21世纪的今天，人们生活质量大大提高，物质生活日渐丰富，人们更看重生活的质量，更懂得享受生活，智能家居就应运而生了，而家用安防系统是智能家居领域中人们尤为关注的一块，于是各种安防系统也就有了市场。

系统主要基于单片机与GSM通信技术，单片机不断读取外部传感器信号量，通过串口向GSM Modem发送相应的AT指令，控制GSM Modem TC35i做出相应的动作，发送短信息向房主汇报家里实况该系统以单片STC89C52RC为核心作为控制模块，由GSM无线通信模块、传感器数据信息采集模块、液晶显示模块和报警模块组成。通过传感器模块中光电传感器和温度传感器采集相关信号，经A/D转换模块转换成单片机可处理的数字信号，经过语音报警模块发出相关报警信号，将该信号通过GSM短信模块，借助GSM移动网络，以中文短消息，直接把报警地点的情况反映到您的手机屏幕上。

该系统具有安全保密性高，又不需要组建专用网络和维护网络，网络覆盖面广，因此与传统的监控系统相比有着其独特的优势。 关键词：STC89C52RC单片机；GSM网络；传感器；报警系统；

ABSTRACT

On this day in twenty-first Century, people will greatly improve the quality of life is abundant, the material life personal property problems will gradually be more people's attention, and various security systems have a market.

This system mainly based on SCM and GSM communication technology, the microcontroller continuously reading outside of sensor signals, through a serial port to GSM Modem send corresponding instruction, control the GSM Modem mig-at make corresponding action, sending short messages to the ownerThe system is MCU STC89C52RC the core as a control module, which is consist of the GSM wireless communication module, sensor data acquisition module, LCD module and alarm module. Photoelectric sensor module through the sensor and temperature sensor acquisition-related signals，through the A / D converter module into digital signals which a single chip can handle, after issuing the relevant alarm voice alarm module signals，the signal is through the GSM SMS module，with GSM mobile network, through Chinese short message, directly to the alarm location is reflected to your mobile phone screen.

The theory is very simple and has high security, and there is no need to set up special networks and to maintain them, moreover the area of GSM networks covering is very wide, so this method has many particular advantages over conventional monitoring system.

Key Words： STC89C52RC single chip microcomputer;GSM networks ；Sensor； Alarm system

目录

摘 要 .......................................................................................................... 1 ABSTRACT ................................................................................................ 2 前言 ............................................................................................................ 3 第一章 绪论 .............................................................................................. 1

1.1研究背景 ...................................................................................... 1 1.2应用现状 ....................................................................................... 1 1.3发展前景 ...................................................................................... 2 1.4设计任务 ...................................................................................... 2 第二章 系统总体设计 ................................................................................ 3

2.1方案比较 ...................................................................................... 3

2.1.1 方案一——基于8031单片机的防盗报警监控系统设计 . 3 2.1.2 方案二——基于GSM网络的家居远程监控系统设计 ....... 3 2.2 核心控制单元STC89C52RC模块——闪电存储型器件 ......... 4

第三章 系统模块及工作原理 ................................................................... 10

3.1 GSM无线通信——GPRS模块 ...................................................... 10

3.1.1 AT指令说明 .................................................................... 12 3.1.2 PDU编码规则 ................................................................... 13 3.1.3 RS-232串行接口 ............................................................. 14 3.2温度传感器 ................................................................................. 19

3.2.1 DS18B20温度传感器 ....................................................... 19 3.2.2 LM75A-数字温度传感器模块 ........................................... 25 3.3 DHT11湿度传感器 ...................................................................... 26 3.4 光敏电阻 .................................................................................... 28

3.4.1 工作原理 ......................................................................... 29 3.5 显示模块 .................................................................................... 30

3.5.1 方案1——采用LED液晶显示屏..................................... 30

3.5.2 方案2——采用1602液晶显示器 ................................... 30 3.6 报警模块 .................................................................................... 32

3.6.1 蜂鸣器方案选择 .............................................................. 32

第四章 系统软件流程 ............................................................................... 34

4.1系统程序的设计 .......................................................................... 34

4.1.1 主程序流程图 ................................................................. 34 4.1.2 温度传感器流程 .............................................................. 35 4.1.3 液晶显示流程 ................................................................. 36

结 论 ......................................................................................................... 38 参考文献 ................................................................................................... 39 致 谢 .................. …… 此处隐藏：3804字，全部文档内容请下载后查看。喜欢就下载吧 ……