【正文】
畢業(yè)設(shè)計(論文)專用紙 第 I 頁 摘要 本文闡述了自動售貨機(jī)的設(shè)計概論、研究意義以及它的發(fā)展歷史,對自動售貨機(jī)的方案進(jìn)行了論證。本設(shè)計采用西門子 s7200 系列 PLC 作為控制系統(tǒng),介紹了 PLC 的基本組成、發(fā)展以及特點。文中詳盡地介紹了自動售貨機(jī)的原理以及各硬件組成, PLC 外部接線圖,并與按鈕指示燈相結(jié)合進(jìn)行人機(jī)交互,以完成交易。本設(shè)計編程部分采用了西門子專用編譯軟件進(jìn) PLC 梯形圖的編寫?;谖鏖T子 s7200 系列 PLC 控制的自動售貨機(jī)具有很高的穩(wěn)定性,保證自動售貨機(jī)能夠長期運(yùn)行。 關(guān)鍵詞: PLC,自動售貨機(jī),梯形圖 畢業(yè)設(shè)計(論文)專用紙 第 II 頁 Abstract This paper expounds the introduction to the design of the vending machine, the research significance and the development history of it, and demonstrates the scheme of it. This design scheme adopts the Siemens s7200 series PLC as the control system, and introduces the basic structure, development and characteristics of the PLC. This paper introduces the principle of the vending machine and the hardware position and PLC external wiring diagram, and bined with buttons and indicator lights for human interaction in order to plete the transaction. This design programming part adopts Siemens piler software into the writing of the PLC ladder diagram. The Siemens PLC controlbased vending machine has high stability to ensure the vending machine can run for a long time. Keywords: PLC, vending machine, ladder diagram 畢業(yè)設(shè)計(論文)專用紙 第 III 頁 目錄 1 緒論 ............................................................................................................................ 1 課題研究背景、目的以及意義 ....................................................................... 1 自動售貨機(jī)的歷史沿革與發(fā)展前景 ............................................................... 1 本設(shè)計的基本要求 ........................................................................................... 3 自動售貨機(jī)設(shè)計的基本思路 .......................................................................... 4 2 PLC 概述 ...................................................................................................................... 5 PLC 的產(chǎn)生以及定義 ........................................................................................ 5 PLC 發(fā)展趨勢 .................................................................................................... 6 PLC 的硬件組成與工作原理 ............................................................................ 7 PLC 的編程語言 ................................................................................................ 9 3 自動售貨機(jī)的整體設(shè)計 ......................................................................................... 10 自動售貨機(jī)控制面板圖 ................................................................................. 10 電機(jī)的選擇 ..................................................................................................... 11 錢幣識別器 ..................................................................................................... 12 電磁閥的選擇 ................................................................................................. 16 4 控制系統(tǒng)設(shè)計 .......................................................................................................... 17 控制電路硬件組成框圖 ................................................................................ 17 工作流程圖 .................................................................................................... 17 自動售貨機(jī) I/O 點分配 ................................................................................. 19 自動售貨機(jī)的接線圖 ..................................................................................... 20 5 PLC 程序設(shè)計 ............................................................................................................ 21 結(jié)論 .............................................................................................................................. 25 致謝 .............................................................................................................................. 26 參考文獻(xiàn) ...................................................................................................................... 27 附錄 程序圖 ................................................................................................................ 29 畢業(yè)設(shè)計(論文)專用紙 第 1 頁 1 緒論 課題研究背景、目的以及意義 近年來,中國的經(jīng)濟(jì)發(fā)展十分迅猛,隨著人們生活水平的提高,人們對物質(zhì)與精神的需求越來越高,所以很需要一些能提高人們生活品質(zhì)的東西,譬如在營業(yè)時間外的時候,我很需要一瓶飲料來止渴,這時候如果有一臺制動售貨機(jī),那將