【正文】 ，能達(dá)到小數(shù)點(diǎn)后 3 位，而且具有連接方便，占用接口線少等優(yōu)點(diǎn)。 基于 GPRS 的遠(yuǎn)程溫度監(jiān)測系統(tǒng)設(shè)計 6 2. 系統(tǒng)的總體結(jié)構(gòu)與硬件電路設(shè)計 系統(tǒng)總體結(jié)構(gòu)設(shè)計 系統(tǒng)的總體設(shè)計思路是溫度采集模塊將采集到的數(shù)據(jù)通過 GPRS 模塊發(fā)送到監(jiān)控計算機(jī)上。溫度檢測采用 DS18B20， 非常適用于多點(diǎn) 、 惡劣環(huán)境下的溫度監(jiān)測系統(tǒng)。 隨著無線通信技術(shù)的發(fā)展，采用無線的傳輸方式已成為遠(yuǎn)程分布式溫度監(jiān)測技術(shù)的發(fā)展趨勢。這些特點(diǎn)適合于提高企業(yè)計量信息的及時性、可靠性、準(zhǔn)確性和實(shí)現(xiàn)企業(yè)生產(chǎn)管理的信息化。 隨著 計算機(jī)技術(shù)和通信技術(shù)的不斷發(fā)展，計算機(jī)遠(yuǎn)程無線監(jiān)控技術(shù)在工業(yè)控制領(lǐng)域中的應(yīng)用越來越廣泛 。 關(guān)鍵詞： 溫度采集系統(tǒng)；監(jiān)控軟件；單片機(jī) 3 GPRSbased remote temperature monitoring system Abstract:Temperature is the main accused in the industrial production one of the parameters, associated with a variety of temperature control systems are widely used in metallurgy, chemical Ding, machinery, food and other control is the small business often encountered in production process on the temperature control process directly influences the quality of example: in the metallurgical industry, chemical production, power engineering, paper industry, machinery manufacturing and food processing and many other areas, people need all kinds of furnace, heat treatment furnace, the temperature in the reactor and boiler testing and control。 GPRS 設(shè)備數(shù)據(jù)監(jiān)控終端傳輸設(shè)備一開機(jī)就能自動附著到 GPRS 網(wǎng)絡(luò)上 ， 與數(shù)據(jù)中心實(shí)時在線進(jìn)行實(shí)時數(shù)據(jù)通信 ， 高速輸，可靠性高。例如：在冶金工業(yè) 、 化工生產(chǎn) 、 電力工程 、 造紙行業(yè) 、 機(jī)械制造和食品加工等諸多領(lǐng)域中 ， 人們都需要對各類加熱爐 、 熱處理爐 、 反應(yīng)爐和鍋爐中的溫度進(jìn)行檢測和控制 ； 在農(nóng)業(yè)生產(chǎn)、糧食儲備、計算機(jī)機(jī)房等都需要對溫度進(jìn)行控制。 1 基于 GPRS 的遠(yuǎn)程溫度監(jiān)測系統(tǒng)設(shè)計 基于 GPRS 的遠(yuǎn)程溫度檢測系統(tǒng)設(shè)計 2 基于 GPRS的遠(yuǎn)程溫度監(jiān)測系統(tǒng)設(shè)計 摘 要 溫度是工業(yè)生產(chǎn)中主要的被控參數(shù)之一，與之相關(guān)的各種溫度控制系統(tǒng)廣泛應(yīng)用于冶金 、 化丁 、 機(jī)械 、 食品等領(lǐng)域 。因而 設(shè)計一種較為理想的溫度控制系統(tǒng)是非常有價值的。 文中設(shè)計了 一種溫度控制系統(tǒng)，用單片機(jī)作為微控器，選用數(shù)字溫度傳感器，對溫度進(jìn)行控制， 提出了一種基于 GPRS 技術(shù)的遠(yuǎn)程溫度監(jiān)測系統(tǒng)方案，采用AT89C51 單片機(jī)和 DS18B20 數(shù)字溫度傳感器實(shí)現(xiàn)現(xiàn)場溫度數(shù)據(jù)的采集和處理，再通過 GPRS 模塊 TC39i實(shí)現(xiàn)遠(yuǎn)程的數(shù)據(jù)傳輸和接收， 具有精度高、穩(wěn)定性好的特點(diǎn)。in agricultural production, food reserves, puter room and so the need for temperature designed an ideal temperature control system is very valuable. As a highspeed, efficient and costeffective wireless system， GPRS has a wide range of work coverage, wide data bandwidth, adaptable, denominated by the data flow calculation advantage, the advantages of realtime online, especially for intermittent, and sudden or frequent , And a small amount of data transfer, but also for the occasional large amounts of data transmission, data collection and monitoring to meet the twoway data transmission. GPRS technology from the laboratory studies, areas to the official business within the trial, after a long, technologically advanced and reliable. GPRS equipment data monitoring terminal transmission equipment can automatically attach a boot to the GPRS work, and data centers for realtime data in realtime online munication, highspeed transmission and high reliability. In this paper, design a temperature control system, with the microcontroller as the microcontroller the choice of digital temperature sensors, temperature control, a GPRSbased technology solutions for remote temperature monitoring system, using AT89C51 microcontroller and digital temperature sensor for field DS18B20 Temperature data acquisition and processing, and through the GPRS module TC39i remote data transmission and reception, with high accuracy, good stability. Hardware design of a microcontrollerbased smart temperature control system to AT89C51 microcontroller as the core, using a temperature sensor DS18B20, the GPRSbased wireless munication module, based on AT mands and data acquisition, to build a remote temperature data acquisition system For temperature control The results show the good effect of the system and have broad application prospects. Key Words:Temperature acquisition system, monitoring software, Microcontrolle 基于 GPRS 的遠(yuǎn)程溫度檢測系統(tǒng)設(shè)計 4 目 錄 1. 概 述 ..........................................................................................................................5 課題設(shè)計背景 .........................................................................................................5 課題設(shè)計意義 .........................................................................................................5 2. 系統(tǒng)的總體結(jié)構(gòu)與硬件電路設(shè)計 ..................................................................................6 系統(tǒng)總體結(jié)構(gòu)設(shè)計 .................................................................................................6 溫度采集模塊設(shè)計 .................................................................................................6 單片機(jī)電路設(shè)計 .....................................................................................................8 通信電路設(shè)計 .....................................................................................................13 ..............................................................................................................15 下位機(jī)總體軟件的設(shè)計 .......................................................................................15 溫度采集程序設(shè)計 ................................................................................................17 通信模塊設(shè)計 ........................................................................................................19 ..............................................................................................................23 GPRS 通信網(wǎng)絡(luò) ..................................................................................................23 遠(yuǎn)程溫度檢測的實(shí)現(xiàn)原理 .................................................................................24 GPRS DTU 遠(yuǎn)程溫度監(jiān)測界面 ........................................................................25 ..............................................................................................................26 ..............................................................................................................................28 致 謝 .............................................................................................................................30 附錄 1：采集系統(tǒng)接線圖 ........................................................................................