基于can總線的溫度檢測系統(tǒng)(已修改)
2025-07-09 17:26 本頁面
【正文】 基于CAN總線的溫度檢測系統(tǒng)摘 要 本設(shè)計以AT89S51單片機為核心的溫度控制系統(tǒng)的工作原理和設(shè)計方法來研究CAN總線測控系統(tǒng)間數(shù)據(jù)通信、結(jié)構(gòu)靈活、通用性號。我們還采用了單總線型數(shù)字式的溫度傳感器DS18B20，使系統(tǒng)具有測溫誤差小、分辨率高、抗干擾能力強，動態(tài)顯示的方式等特點。選用SJA1000作為CAN總線的控制器與82C250芯片設(shè)計了CAN總線接口模塊。82C250可以提供對總線的差動發(fā)送和接收功能，提高系統(tǒng)總線的節(jié)點驅(qū)動能力，增大通信距離，降低干擾。 傳感器電路將感應(yīng)到的溫度信號以電壓的形式輸出到信號調(diào)理電路，信號經(jīng)過調(diào)理后輸入到A/D采樣電路，由ADC將數(shù)字量值送給單片機系統(tǒng)，最后單片機將采集到的數(shù)據(jù)送到CAN總線控制器，通過CAN總線收發(fā)器傳上總線，完成數(shù)據(jù)采集從而實現(xiàn)溫度控制的目的。溫度檢測無論在醫(yī)療電子領(lǐng)域還是工業(yè)控制領(lǐng)域應(yīng)用都非常廣泛，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行檢測和控制，醫(yī)療電子領(lǐng)域的生化分析儀等，內(nèi)部都涉及到溫度控制，具有特別廣闊的前景。關(guān)鍵字：AT89S51單片機 溫度傳感器DS18B20 SJA1000控制器 溫度檢測Based on CAN main line39。s temperature examination systemPicking Wanting 窗體底端窗體頂端This design studies between the CAN main line observation system take at89S51 monolithic integrated circuit as the core temperature control system39。s principle of work and the design method the data munication, the structure nimble, the versatile numbers. We have also used single main line type number character style temperature sensor DS18B20, enables the system to have the temperature measurement error to be small, the resolution is high, ant jamming ability, dynamic demonstration characteristics and so on way. Selected SJA1000 has designed the CAN bus interface module as the CAN main line39。s controller and the 82C250 chip. 82C250 may provide to main line39。s differential motion transmission and the receive function, sharpens system bus39。s node driving force, increases the signal distance, reduces the disturbance The sensor electric circuit will induce the temperature signal outputs the signal recuperation electric circuit by the voltage form, the signal after the recuperation inputs to a/D sampling circuit, gives by ADC the digital size the monolithic integrated circuit system, finally the monolithic integrated circuit will gather the data delivers the CAN bus control unit, passes on the main line through the CAN main line transceiver, pletes the data acquisition, thus realizes the temperature control goal.窗體頂端 Regardless of the temperature examination is widespread in the medical electron domain or the industrial control domain application, the people need to each kind of heating furnace, the heattreatment furnace, the reactor and boiler39。s temperature carry on the examination and the control, the medical electron domain biochemistry analyzer and so on, the interior involve to the temperature control, has the specially broad prospect.Key words: AT89S51 monolithic integrated circuit temperature sensor DS18B20 SJA1000 controller temperature examination目錄引言 1第一章 緒 論 2 本設(shè)計研究的背景和實際意義 2 研究設(shè)計相關(guān)內(nèi)容 21. 3 課題完成功能 3第二章 系統(tǒng)設(shè)計的基本方案 4 設(shè)計的主要思路 4 溫度檢測的總體方案設(shè)計 4第三章 CAN總線溫度檢測系統(tǒng)的硬件及設(shè)計 5 AT89S51單片機介紹 5 傳感器的選用DS18B20傳感器 8 PCA82C250收發(fā)器，控制器SJAl000與6N137光耦合器 10 CAN總線接口電路設(shè)計 15 單片機的接口電路 16第四章 軟件設(shè)計 19 軟件總流程圖 20 系統(tǒng)程序設(shè)計 1
環(huán)評公示相關(guān)推薦
鄂ICP備17016276號-1