【正文】
I 重慶郵電大學移通學院畢業(yè)設計 (論文 )任務書 設計 (論文 )題目 PLC 控制五層電梯設計 學生姓名 張聲吉 系別 自動化系 專業(yè) 電氣工程及其自動化 班級 05110902 指導教師 崔衛(wèi)星 職稱 助教 聯(lián)系電話 18223263794 教師單位 重慶郵電 大學移通學院 下任務日期 2021 年 1 月 4 日 主 要 研 究 內 容 、 方 法 和 要 求 研究內容: PLC 仿真及其應用的基本知識和技能 。 ( 2) 查閱資料,翻譯英文文獻( 3 月 20 前) 。 可編程控制器( PLC, Programmable logic controller)既保留了繼電器控制系統(tǒng)的簡單易懂的特點,更有控制精度高、可靠性好、抗干擾能力強、控制程序可隨工藝改變、易于與計算機接口、維修方便等諸多高品質性能。 【關鍵詞】 電梯控制 PLC 并聯(lián)控制 重慶郵電大學移通學院本科畢業(yè)設計(論文) III ABSTRACT At early time, the elevator is mainly controlled by relay control way, but as people on the elevator smoothness, suite, accurate, efficient and a series of static performance and dynamic performance requirements increase, the shorting of relay control was exposed, such as high failure rate, poor reliability, plicated wiring , as soon as pleted it’ s not easy to changed. So you need to develop a safe and efficient way of control. PLC(Programmable logic controller) is retained the relay control system characteristics of easy to understand, more high control precision, good reliability, strong antiinterference ability, along with the changes in technology, control program and easy with the puter interface, convenient maintenance, and it has many other high quality performances. Therefore, PLC in the elevator control applications has been broad and deep. The graduation design in the five floors elevators as the control object, using Siemens PLC S7200 as the elevator system design tool. The design focuses on the control system, therefore, no other redundant equipment in the design. The PLC elevator overview introduces PLC and elevator structure, working principle and characteristics, let oneself have a general understanding of the elevator, the related knowledge of PLC to consolidate and deepen. In the hardware design part, because the research focus on the elevator system, it mainly introduces the position detecting element. In the part of software design, this paper introduces in detail the elevator in the actual operation, including: floor display, flat layer of judgment, internal and external calls latch, uplink and downlink selection, operation direction display, speed control, open and close the door, manual control and safety control. In order to meet the people in the use process more convenient, this design with two elevators in parallel control, the two parallel for logic control, Shared outside the hall call button, and the elevator itself also has the function of collection, no unmaned operation can be realized. 【 Key words】 elevator control PLC parallel control 重慶郵電大學移通學院本科畢業(yè)設計(論文) IV 目 錄 前 言 .............................................................................................................................................. 1 第一章 PLC 控制電梯概述 ......................................................................................................... 2 第一節(jié) PLC 概述 ..................................................................................................................... 2 一、 PLC 的發(fā)展歷史 ............................................................................................................. 2 二、 PLC 的特點、應用領域及發(fā)展趨勢 ............................................................................. 3 三、 PLC 的結構 ..................................................................................................................... 5 四、 PLC 的工作原理 ............................................................................................................. 7 第二節(jié) 電梯概述 ...................................................................................................................... 9 一 、電梯的分類 ...................................................................................................................... 9 二、電梯結構 ........................................................................................................................ 11 三、電梯工作原理 ................................................................................................................ 14 第二章 電梯系統(tǒng)設計 ................................................................................................................ 15 第一節(jié) 控制系統(tǒng)框圖設計 .................................................................................................... 15 第二節(jié) 控制方式設計 ............................................................................................................ 16 第三章 硬件設計 ........................................................................................................................ 17 第一節(jié) 硬件選擇選擇 ............................................................................................................ 17 一、位置檢測元件的選擇 .................................................................................................... 17 二、 PLC 型號的選擇 ........................................................................................................... 18 第二節(jié) 硬件電路的設計 ........................................................................................................ 18 第四章 軟件設計 ........................................................................................................................ 20 第一節(jié) 電梯運行流程圖設計 ................................................................................................ 20 第二節(jié) PLC 的 I/O 地址分配 ................................................................................................ 22 一、 PLC 的 I/O 地址分配 .................................................................................................... 22 二、中間繼電器和定時器相應的編號及功能 .................................................................... 23 第三節(jié) PLC 程 序設計 ....................................................................................