【正文】 article outlines the main features and principles of the work， expounded the trend of the development and the convenience of the farming and techniques in the future. Experiments result indicted that MF1 IC S50 was high sensitive and radio of error was low. The operation of both hardware and software were stable， it has a great applied value. Keywords： RFID PIC MCUcontrol motordriving 南京林業(yè)大學 20xx 年畢業(yè)論文 3 目錄 摘要 .................................................................................................................................................. 1 ABSTRACT....................................................................................................................................... 2 目錄 .................................................................................................................................................. 3 1 前言 .............................................................................................................................................. 4 選題的背景及意義 ................................................................................................................ 4 研究目標和研究內(nèi)容 ............................................................................................................ 5 研究目標 .................................................................................................................... 5 研究內(nèi)容 .................................................................................................................... 6 2 RFID 技術(shù)簡介 ............................................................................................................................... 7 RFID 系統(tǒng)的組成 .................................................................................................................. 7 RFID 系統(tǒng)的原理 .................................................................................................................. 7 RFID 系統(tǒng)方案選型 ............................................................................................................... 8 RFID 特點 ............................................................................................................................. 8 3 ACFCS 系統(tǒng)總體設(shè)計 ....................................................................................................................10 概述 .....................................................................................................................................10 ACFCS 工作流程 .................................................................................................................10 ACFCS 總體方案設(shè)計 ...........................................................................................................10 ACFCS 基本功能 ................................................................................................................. 11 4 ACFCS 系統(tǒng)硬件電路設(shè)計 .............................................................................................................12 元件選擇 .............................................................................................................................12 單片機的選擇 ............................................................................................................12 串口 EEPROM 的選擇 ..............................................................................................14 顯示與人工設(shè)定模塊設(shè)計 ..................................................................................................15 HD7279A 芯片選擇 ..................................................................................................15 模塊的電路設(shè)計 .........................................................................................................17 單片機控制模塊 ..................................................................................................................18 電機驅(qū)動模塊 ......................................................................................................................19 步進電機的選擇 .........................................................................................................19 5 ACFCS 系統(tǒng)軟件設(shè)計 ..................................................................................................................23 程序的主循 環(huán)流程 ...............................................................................................................23 軟件開發(fā)環(huán)境 ......................................................................................................................24 RS232 串行通信 ..........................................................................................................24 通信協(xié)議 ...................................................................................................................24 串行通信程序設(shè)計 .....................................................................................................25 步進電機位置控制程序設(shè)計 .................................................................................................26 中斷程序設(shè)計 ......................................................................................................................28 6 總結(jié)與討論 .................................................................................................................................29 7 致謝 ............................................................................................................................................30 參考文獻 ..........................................................................................................................................31 附錄 控制系統(tǒng)的程序清單 ................................................................................................................32 南京林業(yè)大學 20xx 年畢業(yè)論文 4 1 前言 選題的背景及意義 近幾年來，我國奶業(yè)持續(xù)健康發(fā)展，飼養(yǎng)規(guī)模不斷擴大，加工能力明顯增強，奶類產(chǎn)品持續(xù)增長，乳品消費穩(wěn)步提高，對豐富城鄉(xiāng)市場、優(yōu)化農(nóng)業(yè)結(jié)構(gòu)、增加農(nóng)民收入做出了重要貢獻。軟、硬件系統(tǒng)能夠長期穩(wěn)定的運行，具有較高的使用價值。但是由于飼料的重量是靠人工把握的，不可避免會出現(xiàn)誤差，當料量偏少時奶牛吃不飽，會導(dǎo)致產(chǎn)奶量