【正文】 統(tǒng)的設(shè)計(jì)報(bào)告》及畢業(yè)論文。 七、參考文獻(xiàn) [1] 金沙灘工作室 C51板子貼吧 [2] 唐穎，程菊花，任條娟．單片機(jī)原理與應(yīng)用及 C51程序設(shè)計(jì)．北京大學(xué)出版社， [3]馬忠梅，張凱 . 單片機(jī)的 C語(yǔ)言應(yīng)用程序設(shè)計(jì) [M]．北京航空航天大學(xué)出版社， [4]劉文濤． MCS51單片機(jī)培訓(xùn)教程 [M]．北京：電子工業(yè)出版社， . [5]常鐵原，王欣，陳文軍 . 多路數(shù)據(jù)采集系統(tǒng)的設(shè)計(jì) .電子技術(shù)應(yīng)用， 2021， 指導(dǎo)教師簽字 時(shí) 間 2021 年 10 月 9 日 摘要 本文介紹了基于單片機(jī)的數(shù)據(jù)采集的硬件設(shè)計(jì)和軟件設(shè)計(jì)，數(shù)據(jù)采集系統(tǒng)是模擬域與數(shù)字域之間必不可少的紐帶，它的存在具有著非常重要的作用。本文介紹的重點(diǎn)是數(shù)據(jù)采集系統(tǒng)，而該系統(tǒng)硬件部分的重心在于單片機(jī)。數(shù)據(jù)采集與通信控制采用了模塊化的設(shè)計(jì)，數(shù)據(jù)采集與通信控制采用了單片機(jī) STC89C52 來(lái)實(shí)現(xiàn)，硬件部分是以單片機(jī)為核心，還包括 A/D 模數(shù)轉(zhuǎn)換模塊，顯 示模塊， USB 接口和串行接口部分。該系統(tǒng)從機(jī)負(fù)責(zé)數(shù)據(jù)采集并應(yīng)答主機(jī)的命令。 8路被測(cè)電壓通過(guò)模數(shù)轉(zhuǎn)換器 PCF8591 進(jìn)行模數(shù)轉(zhuǎn)換，實(shí)現(xiàn)對(duì)采集到的數(shù)據(jù)進(jìn)行模擬量到數(shù)字量的轉(zhuǎn)換，并將轉(zhuǎn)換后的數(shù)據(jù)通過(guò) USBUART 轉(zhuǎn)換電路PL2303 或串口 RS232傳輸?shù)缴衔粰C(jī)，由上位機(jī)負(fù)責(zé)數(shù)據(jù)的接受、處理和顯示，并用 LED數(shù)碼顯示器來(lái)顯示所采集的結(jié)果。軟件部分應(yīng)用 Keil uvision3 編寫控制軟件，對(duì)數(shù)據(jù)采集系統(tǒng)、模數(shù)轉(zhuǎn)換系統(tǒng)、數(shù)據(jù)顯示、數(shù)據(jù)通信等程序進(jìn)行了設(shè)計(jì)。 關(guān)鍵詞 ： 單片機(jī) 數(shù)據(jù)采集 STC89C52 PCF8591 Abstract This article describes the hardware design and software design of the data on which based on signalchip microputer .The data collection system is the link between the digital domain and analog domain. It has an very important function. The introductive point of this text is a data to collect the system. The hardware of the system focuses on signalchip microputer .Data collection and munication control use modular design. The data collected to control with correspondence to adopt a machine STC89C52 to carry out. The part of hardware?s core is SCM, is also includes A/D conversion module, display module, and the serial interface. Slave machine is responsible for data acquisition and answering the host roads were measured the electric voltage to pass the in general use moldfew conversion of PCF8591,the realization carries on the conversion that imitates to measure the numeral to measure towards the data that collect .Then send the data to the host machine through PL2303 or host machine is responsible for data and display, LED digital display is responsible display the data. The software is partly programmed with Keil uvision3 The software can realize the function of monitoring and controlling the whole system. It designs much program like dataacquisition treatment,datadisplay and datamunication etc. Keyword: SCM Data acquisition STC89C52 PCF8591 目錄 第一章 緒論 ................................................................................ 錯(cuò)誤 !未定義書簽。 研究背景及其目的意義 ................... 錯(cuò)誤 !未定義書簽。 國(guó)內(nèi)外研究現(xiàn)狀 ........................................... 2 該課題研究的主要內(nèi)容 .................................... 3 采用的方法 .....................................................................................................................3 實(shí)現(xiàn)步驟 .........................................................................................................................4 預(yù)期成果 .........................................................................................................................4 第二章 開發(fā)環(huán)境及開發(fā)工具 .................................................................................. Protel99se 介紹 ........................................................................................................ KeilUvision3 介紹 ............................................................................................ Microsoft Visual Studio 2021 介紹 ......................................................... 其它 ......................................................................................................................... 第 三 章 數(shù)據(jù)采集 ................................................................................................ 6 數(shù)據(jù)采集系統(tǒng) .............................................. 7 方案論證 .................................................. 8 A/D 模數(shù)轉(zhuǎn)換的選 擇 ...................................... 8 單片機(jī)的選擇 ............................................ 8 串行口的選擇 ........................................... 9 LED 顯示部分 ............................................ 9 按鍵 ................................................... 6 通信方式 ..............................................................................................................7 第 四 章 硬件部分 .................................................................................................10 ................................ 錯(cuò)誤 !未定義書簽。 PCB 圖設(shè)計(jì) ............................................................................................................... 單片機(jī) .................................................... 13 LED數(shù)碼顯示器的應(yīng)用原理 ..........................................................................錯(cuò)誤 !未定義書簽。 模數(shù)轉(zhuǎn)換器 PCF8591 ....................................... 19 第 五 章 軟件部分 .................................................................... 錯(cuò)誤 !未定義書簽。 主機(jī)程序設(shè)計(jì) ............................................. 21 PC 機(jī)顯示界面 程序設(shè)計(jì) ................................... 25 調(diào)試結(jié)果 .......................................................................................................................32 第六章 總結(jié) .........................................................................................................27 致謝 .................................................................................................. 錯(cuò)誤 !未定義書簽。 參考文獻(xiàn) ...................................................................................................................27 附錄 A外文資料翻譯 ..........................................................................................28 英文原文 ......................................................................................................... 中文譯文 ........................................................................................................... 附錄 B代碼 ..............................................................................................................45 單片機(jī)數(shù)據(jù)采集系統(tǒng)代碼 ................................................................................. PC 機(jī)接收