【正文】 2020屆本科生畢業(yè)設(shè)計(jì) 分類(lèi)號(hào)： 題 目 : 基于單片機(jī)的自動(dòng)抽紙系統(tǒng)設(shè)計(jì) 2020 年 5 月 15 日 摘 要 本系統(tǒng)采用 STC89C52 單片機(jī)設(shè)計(jì)出一套蹲便器自動(dòng)抽紙系統(tǒng)。本系統(tǒng)由單片機(jī)，紅外傳感器，激光傳感器，步進(jìn)電機(jī)和一些控制模塊組成。利用單片機(jī)、步進(jìn)電機(jī)等實(shí)現(xiàn)人方便后自動(dòng)抽出一定長(zhǎng)度的紙的功能。單片機(jī)負(fù)責(zé)把采集到的數(shù)據(jù)處理后與控制模塊通信。通過(guò)紅外線(xiàn)來(lái)探測(cè)是否有人進(jìn)入系統(tǒng)范圍，根據(jù)紅外線(xiàn)輻射的能量進(jìn)行檢測(cè)，檢測(cè)到有人后經(jīng)紅外傳感器把信號(hào)發(fā)送給中心系統(tǒng)，同時(shí)指示燈亮，進(jìn)行提示。當(dāng)有人方便時(shí)，按下按鍵，系統(tǒng)便會(huì)自動(dòng)出紙。通過(guò)實(shí)踐，我們小組成功的做出了自動(dòng)抽紙系統(tǒng)并且拍攝了實(shí)物圖，本系統(tǒng)用料簡(jiǎn)單，無(wú)論從方法和用料都是具有可行性的。 關(guān)鍵詞： 通信；紅外；步進(jìn)電機(jī)； STC89C52 ABSTRACT The system uses a set of singlechip design STC89C52 Pissing automatic pumping paper system. The system consists of microcontroller, infrared sensors, laser sensors, stepper motors and some control module. Use of microcontroller, stepper motor for automatic extraction of people after a certain length of paper to facilitate the function. MCU responsible for processing the collected data munication with the control module. Via infrared to detect if someone enters the systemwide, according to the energy detect infrared radiation detected by the infrared sensor after someone sends signals to a central system, and indicator lights, prompting. When someone convenient, press the button, the system will automatically eject. Through practice, the success of our team to make an automatic pumping system and shoot a real paper map, the system is simple to use material from both the methods and the materials used are feasible. Keywords: Communicate。 Infrared。 Stepper motor。 STC89C52 目 錄 緒論 ........................................................................................................................................ 1 1 設(shè)計(jì)思路與方案 ................................................................................................................ 1 設(shè)計(jì)思路 ................................................................................................................... 1 設(shè)計(jì)方案 ................................................................................................................... 1 2 步進(jìn)電機(jī)的工作原理及特性 .......................................................................................... 2 步進(jìn)電機(jī)的簡(jiǎn)介 ....................................................................................................... 2 步進(jìn)電機(jī)的特點(diǎn) ....................................................................................................... 2 步進(jìn)電機(jī)的工作原理 ............................................................................................... 3 3 硬件電路設(shè)計(jì) .................................................................................................................... 5 單片機(jī)最小系統(tǒng)電路 ............................................................................................... 5 控制模塊 ................................................................................................................. 10 驅(qū)動(dòng)模 塊 ................................................................................................................. 10 激光檢測(cè)電路輸出 ................................................................................................. 13 串口通信模塊 ......................................................................................................... 13 4 軟件設(shè)計(jì) ........................................................................................................................ 14 程序流程圖 ............................................................................................................. 14 系統(tǒng)主程序 ............................................................................................................. 15 定時(shí)中斷設(shè)計(jì) ......................................................................................................... 16 外部中斷設(shè)計(jì) ......................................................................................................... 17 Proteus 仿真軟件 .................................................................................................... 17 本次系統(tǒng)的仿真圖 ................................................................................................. 18 5 PCB 板設(shè)計(jì)及硬件調(diào)試 ................................................................................................. 19 PCB 制作過(guò)程 ........................................................................................................ 19 硬件調(diào)試 PCB ........................................................................................................ 20 系統(tǒng)設(shè)計(jì)實(shí)物圖 ..................................................................................................... 20 結(jié)束語(yǔ) .................................................................................................................................. 22 參考文獻(xiàn) ...........