基于PLC的混凝土配料系統(tǒng)設(shè)計(jì)

電氣自動(dòng)化論文編號(hào):ZD668    論文字?jǐn)?shù):17127,頁(yè)數(shù):36
目  錄
摘 要 I
Abstract II
1 前言 1
1.1 研究背景及意義 1
1.1.1 商品混凝土的歷史與發(fā)展 1
1.1.2 配料控制產(chǎn)生的背景和要求 2
1.2 自動(dòng)配料系統(tǒng)的發(fā)展與應(yīng)用 2
1.2.1 結(jié)構(gòu)方式 2
1.2.2 控制系統(tǒng) 3
2 控制系統(tǒng)硬件設(shè)計(jì) 5
2.1 控制系統(tǒng)總體設(shè)計(jì) 5
2.1.1 生產(chǎn)工藝簡(jiǎn)介 5
2.1.2 工藝流程及要求 5
2.1.3  控制方案選擇 7
2.1.4  I/O口分析及分配 8
2.2 準(zhǔn)分布式自動(dòng)配料系統(tǒng)的總體設(shè)計(jì) 12
2.2.1 基本功能要求 12
2.2.2  PLC的選擇 12
2.2.3 智能配料控制器的選型 14
2.2.4  RS-232的擴(kuò)展 17
3 控制軟件設(shè)計(jì) 19
3.1 總體設(shè)計(jì) 19
3.2 計(jì)量過(guò)程 20
3.3 投料過(guò)程 21
3.4 攪拌過(guò)程 23
3.5 排料過(guò)程 24
4 電源 26
4.1導(dǎo)線或電纜的選擇 26
4.1.1 導(dǎo)線截面的選擇 26
4.1.2 關(guān)于導(dǎo)線或電纜的定量計(jì)算 26
4.2 電機(jī)啟動(dòng)方式 28
結(jié)論 30
致謝 31
參考文獻(xiàn) 32

摘 要
 采用智能配料控制器（CB920）和OMRON PLC配合實(shí)現(xiàn)稱量、配方存儲(chǔ)、通訊、控制等功能，具有價(jià)格低廉、高可靠性、高性能和智能化的特點(diǎn)。論文采用 MOXA卡用于擴(kuò)展上位機(jī)的RS-232接口，實(shí)現(xiàn)上位機(jī)與下位機(jī)的通訊及對(duì)智能配料控制器（CB920）的控制。根據(jù)混凝土生產(chǎn)工藝的要求，完成了PLC梯形圖的設(shè)計(jì)。通過(guò)軟件的設(shè)計(jì)，使控制系統(tǒng)具備調(diào)整、手動(dòng)和自動(dòng)的控制功能，滿足生產(chǎn)工藝的要求，運(yùn)行穩(wěn)定可靠。其中，調(diào)整工作方式用于試車(chē)和維修等；手動(dòng)工作方式用于輔助生產(chǎn)，自動(dòng)工作方式是主要的生產(chǎn)方式。研究開(kāi)發(fā)分布式自動(dòng)配料系統(tǒng)，對(duì)于改善勞動(dòng)條件、提高產(chǎn)品質(zhì)量和生產(chǎn)效率、完善現(xiàn)代企業(yè)管理具有十分重要的現(xiàn)實(shí)意義。論文對(duì)配料系統(tǒng)的應(yīng)用背景、發(fā)展趨勢(shì)進(jìn)行了綜述，以混凝土生產(chǎn)工藝為研究對(duì)象, 對(duì)自動(dòng)配料系統(tǒng)的功能需求進(jìn)行了分析，在此基礎(chǔ)上設(shè)計(jì)了一個(gè)配料系統(tǒng)的總體結(jié)構(gòu)和硬件實(shí)現(xiàn)方案。
關(guān)鍵詞：智能配料控制器（CB920），混凝土，智能模塊 

Abstract
 Using the intelligent ingredient controller (CB920) and OMRON PLC coordinates to realize functions of the weighing, the formula memory, communication, control, and so on,with characteristics of low in price,redundant reliability,high performance and intellectualization. The paper expands the Connection of superior machine RS-232 using the MOXA card, and realizes the communication between the superior machine and the lower position machine, and controlling to the intelligent ingredient controller (CB920) .According to the request of technique of concretes production, it has completed the design of PLC trapezoidal chart. The control system has the function of adjustment, manual and the automatic controlling with the software designing, satisfies the requests of technique of production, and moves stably reliable. And, the adjustment working uses in testing run and the service and so on; the manual working uses in the auxiliary production, and the automatic production is the main production method. Researching and developing the distributional automatic ingredient system has very important practical significance to improve the work condition, enhance the product quality and the production efficiency, consummate modern business management. The paper has the summaries of the ingredient system's application background, the trend of development, and taking the concretes technique of production as the object of study, it has carried on the analysis to the automatic ingredient system's function demand, so the realizing plan of the hardware and ingredient system's gross structure have been designed based on this.

Keywords:Intelligent Ingredient Controller (CB920)，Concrete ，Intelligent Module