【正文】 ering system. This system mainly posed by the temperature sensor DS18B20, GPRS transmission module EM310 and AT89S52 micro controller. It has the characteristics of wireless transmission work. Through the use of GPRS remote temperature data collection, the simulation of the remote control of the equipment, realize the remote realtime data acquisition, and the temperature can be realized through a work of remote control device. It can realize various site for convenient for remote monitoring and management of temperature. At the same time, the adaptability, transmission speed, high reliability, without limitation, etc. Key words GPRS， Wireless， Temperature， Data acquisition， System 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目錄 目 錄 摘 要 ............................................................................................................................. Ⅰ ABSTRACT ................................................................................................................... Ⅱ 1 緒論 ............................................................................................................................... 1 課題背景 ................................................................................................................ 1 國內(nèi)外研究現(xiàn)狀 ..................................................................................................... 2 本課題 研究意義 ..................................................................................................... 2 系統(tǒng)組成 ................................................................................................................ 2 2 單片機(jī)概述 ................................................................................................................... 4 AT89S52的主要性能 ............................................................................................... 4 AT89S52的功能特性描述 ........................................................................................ 4 AT89S52的管腳排列及引腳功能 .............................................................................. 4 AT89S52的內(nèi)部結(jié)構(gòu)框圖 ........................................................................................ 7 3 GPRS 技術(shù) ..................................................................................................................... 9 GPRS簡介 .............................................................................................................. 9 GPRS分組交換通信技術(shù) ......................................................................................... 9 GPRS的特點(diǎn) .......................................................................................................... 9 應(yīng)用上的特點(diǎn) ............................................................................................... 9 技術(shù)上的特點(diǎn) ............................................................................................. 10 GPRS 與 GSM比較中表現(xiàn)出的特點(diǎn) ............................................................. 10 GPRS 服務(wù)特點(diǎn)對(duì)應(yīng)的范圍 .......................................................................... 10 GPRS連接 Inter的原理 ................................................................................... 11 GPRS的發(fā)展及應(yīng)用 .............................................................................................. 12 GPRS 的發(fā)展 ............................................................................................... 12 GPRS 的應(yīng)用 ............................................................................................... 12 4 EM310 GSM/GPRS 無線模塊介紹 ........................................................................... 14 EM310模塊特性介紹 ............................................................................................ 14 EM310 模塊基本特性參數(shù) ............................................................................ 14 ESD特性 ..................................................................................................... 15 EM310 GPRS模塊功能的概述 .............................................................................. 15 EM310 GPRS模塊應(yīng)用框圖 .................................................................................. 17 攀枝花學(xué)院本科畢業(yè)設(shè)計(jì)（論文） 目錄 EM310 GPRS模塊的天線接口 .............................................................................. 18 天線接口 ESD 防護(hù) ..................................................................................... 18 5 溫度檢測 ..................................................................................................................... 20 溫度檢測儀的分類 ................................................................................................ 20 利用物體熱脹冷縮原理制成的溫度計(jì) .......................................................... 20 利用熱電效應(yīng)技術(shù)制成的溫度檢測元件 ....................................................... 20 正在研究的溫度檢測技術(shù) ............................................................................ 20 DS18B20的概述 .................................................................................................... 21 DS18B20一般說明及特點(diǎn)概述 ..................................................................... 21 DSl8B20的外部管腳及特點(diǎn) ......................................................................... 22 DS18B20的內(nèi)部結(jié)構(gòu) ................................................................................... 22 DS18B20的內(nèi)存結(jié)構(gòu) ................................................................................... 22 DS18B20的測溫功能 ............................................................................................. 22 初始化 ........................................................................................................ 23 ROM操作品令 ............................................................................................ 23 存儲(chǔ)器操作命令 ....................................................................................