【正文】 化，數(shù)字化和網(wǎng)絡(luò)化的方向發(fā)展。美國 NI 公司的提出了 “ 軟件就是儀器 ” 的概念，于是 LabVIEW 應(yīng)運而生。 本設(shè)計就解決了有些重工業(yè)、制藥業(yè)等行業(yè)中的有些場所間內(nèi)不適合人進入時，還需要進行溫度檢測的問題。 LabVIEW 的通信模 塊 NIVISA 在 版本之后開始支持 USB 串口，使下位機與LabVIEW 通信時可以不通過數(shù)據(jù)采集卡接收下位機的監(jiān)測數(shù)據(jù)，使 LabVIEW 的靈活性和實用性更好，節(jié)約了硬件部分的成本。s society in many of the industry with or lack of, some environmental bad place is also can not get away from remote detection system. This design is solved some heavy industry, pharmaceutical industry, etc in between some of place is not fit for human in, still need to temperature detection problem. This design has two sides, the PC is in the PC platform using the LabVIEW software development testing interface, and intuitive observe temperature curve, according to need to also can be in the form of form to Excel, save detection of historical data, according to the realtime data acquisition data and the temperature of the set value parison, tip temperature alarm。 Interface technology。 temperature III 目 錄 摘 要 ................................................................................................................................. I Abstract...............................................................................................................................II 1 緒 論 .......................................................................................................................... 1 課題的研究目的及意義 ................................................................................... 1 課題的國內(nèi)外研究現(xiàn)狀 ................................................................................... 2 課題研究的主要內(nèi)容 ....................................................................................... 3 2 虛擬儀器概述 .............................................................................................................. 4 虛擬儀器的概念 ............................................................................................... 4 虛擬儀器的主要特點 ....................................................................................... 4 虛擬儀器的體系結(jié)構(gòu) ....................................................................................... 5 虛擬儀器的硬件構(gòu)成 ............................................................................ 5 虛擬儀器的軟件構(gòu)成 ............................................................................ 7 LabVIEW 的概述 .............................................................................................. 7 LabviEW 的應(yīng)用現(xiàn)狀 ....................................................................................... 9 本章小結(jié) ......................................................................................................... 10 3 總體設(shè)計 .................................................................................................................... 11 系統(tǒng)實現(xiàn)的功能 ................................................................................................ 11 總體設(shè)計方案 ................................................................................................. 11 本章小結(jié) ......................................................................................................... 12 4 上位機 LabVIEW 的程序設(shè)計 .................................................................................. 13 USB 接口設(shè)計 ................................................................................................ 13 USB 系統(tǒng)的結(jié)構(gòu) ............................................................................................ 14 USB 系統(tǒng)概述 ..................................................................................... 14 USB 主機 ............................................................................................. 15 USB 設(shè)備 ............................................................................................. 15 NIVISA 概述 ................................................................................................. 16 N1VISA 簡介 ...................................................................................... 16 與 NlVISA 相配合的 LabVIEW 模板中 VI 子節(jié)點 ......................... 16 IV USB 設(shè)備讀寫的操作次序 ................................................................. 17 LabVIEW2021 中串口的配置 ........................................................................ 17 上位機 LabVIEW 程序的前面板和程序框圖 ............................................... 18 數(shù)據(jù)處理 .............................................................................................. 18 LabVIEW 的前面板和各個部分的功能 ............................................. 19 LabVIEW 的程序框圖和各個部分的功能 ......................................... 21 本章小結(jié) ......................................................................................................... 22 5 下位機硬件和程序設(shè)計 ............................................................................................ 23 溫度測控儀表的硬件組成 ............................................................................. 23 單片機 ............................................................................................................. 23 MPC89E52AE 單片機 應(yīng)用 ............................................................... 23 MPC89E52AE 單片機的主要特點 ................................................... 24 MAX232 電平轉(zhuǎn)換芯片 ................................................................................. 25 MAX232 電平轉(zhuǎn)換芯片 應(yīng)用 .............................................................. 25 MAX232 電平轉(zhuǎn)換芯片的 引腳介紹 ................................................. 25 MAX232 電平轉(zhuǎn)換芯片的 主要特點 ................................................. 26 DS18B20 溫度傳感器 .................................................................................... 26 DS18B20 溫度傳感器 應(yīng)用 ............................................................... 26 DS18B20 的主要特性 ......................................................................... 27 單片機程序的編寫 ..............................................