【正文】 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論 文） I 基于 PLC 的混凝土攪拌站控制及監(jiān)控程序設(shè)計(jì) 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論 文） II 摘 要 隨著我國經(jīng)濟(jì)建設(shè)的飛速發(fā)展，許多大型的基礎(chǔ)工程及建筑工程相繼開工。建設(shè)優(yōu)質(zhì)的工程需要高品質(zhì)的混凝土，而且隨著人們環(huán)保意識(shí)的加強(qiáng)，為了減少城市噪音和污染，交通和建筑管理部門要求施工用的混凝土集中生產(chǎn)和管理。這樣，不僅要求混凝土的配料精度高，而且要求生產(chǎn)速度快，因此，混凝土生產(chǎn)過程中攪拌設(shè)備自動(dòng)控制系統(tǒng)日益受到人們的重視。可編程控制器具有可靠性高、功能完善、編程簡(jiǎn)單且直觀，能夠有效地彌補(bǔ)繼電器控制系統(tǒng)的缺陷?；谏鲜鲈?，我設(shè)計(jì)了基于的 商品混凝土攪拌設(shè)備自動(dòng)控制系統(tǒng)。 常見的混凝土攪拌站控制方式有繼電器直接控制、 PLC和計(jì)算機(jī)結(jié)合以及 PLC和配料控制器結(jié)合 3 種控制方式。采用 PLC 和配料控制器結(jié)合控制的攪拌站性能可靠、性價(jià)比高，可以保證混凝土的質(zhì)量，提高混凝土生產(chǎn)效率。作為混凝土攪拌站的核心，控制及監(jiān)控程序在計(jì)量精確、控制可靠、管理方便等方面的要求也日益提高。 本文針對(duì) PLC 和配料控制器結(jié)合控制的攪拌站來設(shè)計(jì)其控制及監(jiān)控程序設(shè)計(jì)中主要要完成的任務(wù)有系統(tǒng)構(gòu)造、 PLC 的 I/O 分配、工作流程圖及 PLC 程序的編寫。 關(guān)鍵詞： 混凝土攪拌站； I/O 分 配；可編程控制器（ PLC）；自動(dòng)控制 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論 文） III The designing of the controlling and monitoring program for concrete mixing stations which based on PLC ABSTRACT With the rapid development of China39。s economic construction, the basis for many large engineering and construction projects have been started. Construction of high quality project needs highquality concrete, and with the strengthening of environmental consciousness, in order to reduce urban noise and pollution, traffic and construction management department for the construction of concrete used in concentration of production and management. This requires not only the ingredients of concrete, high precision, and require the production speed, therefore, the production process of concrete mixing equipment automatic control system has attracted attention. Programmable controller with high reliability, functional, simple and intuitive program can effectively make up for the relay control system defects. For these reasons, I designed the product based automatic control system of concrete mixing equipment. Common control of concrete mixing station has direct control of relays, PLC and puter and PLC integration and bination of ingredients controller 3 control. Batching Controller using PLC and the control of mixing with reliable, costeffective, can guarantee the quality of concrete to improve concrete production efficiency. As the core of concrete mixing station, control and monitoring procedures in the measurement of precise, reliable control, easy management, and other requirements are increasing. In this paper, bined with PLC control and ingredients mixing station controller to design the control and monitoring process design of the main tasks to be acplished in a systematic structure, PLC39。s I / O allocation, work flow and procedures for the preparation of PLC. KEY WORDS: Concrete mixing station。 The I / O distribut ion。Programmable logic controller(PLC)。 Automatic control 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論 文） IV 目 錄 前 言 ...................................................................................................1 第 1 章 混凝土攪拌站系統(tǒng)概述 ..........................................................3 混凝土攪拌站的組成 ..............................................................3 電控系統(tǒng)的構(gòu)成 ......................................................................5 稱重傳感器的選擇 ..................................................................7 小結(jié) .........................................................................................8 第 2 章 混凝土攪拌站控制系統(tǒng)設(shè)計(jì) ..................................................9 控制系統(tǒng)設(shè)計(jì)的基本原則及步驟 ..........................................9 PLC 的工作原理 ................................................................... 10 可編程控制器的選用及編程調(diào)試軟件選擇 ........................ 13 2. 可編程控制器的選用 ................................................. 13 2. 編程調(diào)試軟件選擇 .................................................... 15 第 3 章 混凝土攪拌站 PLC程序設(shè)計(jì) ................................................ 18 混凝土攪拌站 PLC 程序設(shè)計(jì)思想 ...................................... 18 混凝土攪拌裝置的工藝流程 ................................................ 18 系統(tǒng)初始化程序及主程序設(shè)計(jì) ............................................ 19 報(bào)警電路的設(shè)計(jì) .................................................................... 21 斷電保護(hù)程序設(shè)計(jì) ................................................................ 21 I/O 分配表和模擬量輸入地址 ............................................. 22 位存儲(chǔ)區(qū)（ M）的使用概況 ................................................ 24 小結(jié) ....................................................................................... 25 第 4 章 程序調(diào)試 ............................................................................... 26 模擬調(diào)試的準(zhǔn)備工作 ............................................................ 26 仿真調(diào)試 ............................................................................... 26 系統(tǒng)初始化程序及主程序調(diào)試 .................................. 26 報(bào)警程序的調(diào)試 .......................................................... 29 小結(jié) ....................................................................................... 30 結(jié) 論 ................................................................................................. 31 洛陽理工學(xué)院畢業(yè)設(shè)計(jì)（論 文） V 謝 辭 ................................................................................................. 32 參考文獻(xiàn) ............................................................................................. 33 附錄 .........................................................................