智能組合秤控制系統(tǒng)設(shè)計(jì)

電氣自動化論文編號:ZD055       字?jǐn)?shù):19230,頁數(shù):41  

目錄
第一章 緒論...................................................1
1.1電子稱重技術(shù)的發(fā)展 ........................................1
1.2可編程控制技術(shù)的現(xiàn)狀.......................................1
1.3可編程控制技術(shù)的發(fā)展趨勢 ..................................2
1.4 PLC在包裝機(jī)械上應(yīng)用的可能性和前景 ........................3
第二章 整體方案.............................................. 5
2.1整體方案 ..................................................5
2.2參數(shù)設(shè)定 ..................................................5
2.3供料斗和稱重料斗外形及尺寸設(shè)計(jì) ............................5
2.4 最下端的滑槽料斗開閉結(jié)構(gòu)..................................6
2.5振動料斗的料位控制 ........................................7
第三章 稱重傳感器.............................................8
3.1稱重傳感器的種類及比較.....................................8
3.2電阻應(yīng)變式傳感器的工作原理 ................................8
3.2.1工作原理............................................. ...8
3.2.2 彈性元件的結(jié)構(gòu)形式圖 ...................................9
3.4傳感器選擇................................................12
3.4.1選型 ...................................................12
3.4.2 主要技術(shù)指標(biāo)...........................................13
第四章 控制方案 .............................................14
4.1 PLC與其它工業(yè)控制系統(tǒng)的比較 .............................14
4.1.1 PLC與繼電器控制系統(tǒng)的比較 .............................14
4.1.2 PLC與單片機(jī)控制系統(tǒng)比較 ...............................15
4.1.3 PLC與計(jì)算機(jī)控制系統(tǒng)的比較 .............................15
4.1.4 PLC與集散型控制系統(tǒng)的比較 .............................15
4.2 整體控制方案.............................................16
4.2.1方案圖 .................................................16
4.2.2控制方案敘述............................................16
4.3 三菱PLC的各種型號........................................17
第五章PLC 計(jì)算選型 ..........................................19
5.1三菱FX2N系列PLC簡介 ......................................19
5.2 PLC的I/O端子圖 ..........................................20
5.3  PLC特殊功能模塊介紹.....................................20
5.3.1模擬量輸入模塊FX2N—4AD ................................20
5.3.2 模擬量輸出模塊FX2N—4DA ...............................21
第六章PLC編程與通訊......................................... 23
6.1  三菱PLC編程軟件 ........................................23
6.1.1  概述 .................................................23
6.1.2  程序編制 .............................................27
6.2建立計(jì)算機(jī)與PLC的通信連接 ................................28
6.2.1 硬件連接.............................................. 28
6.2.2 軟件設(shè)置............................................. .29
6.2.3 編制PLC程序............................................29
第七章  組態(tài)軟件 ............................................30
7.1 什么是組態(tài)軟件 ..........................................30
7.2 MCGS組態(tài)軟件的構(gòu)成 ......................................30
7.2.1 MCGS組態(tài)軟件的整體結(jié)構(gòu).................................30
7.2.2 五大組成部分...........................................31
7.3  MCGS組態(tài)軟件的功能和特點(diǎn) ...............................32
7.4工程新建立............................................... 33
7.4.1建立新工程 .............................................33
7.4.2畫面流程 ...............................................34
結(jié)  論...................................................... 37
謝  辭 ......................................................38
參考文獻(xiàn) ....................................................39

摘 要

機(jī)械自動包裝電子秤廣泛應(yīng)用于食品、化工、糧食等領(lǐng)域，用于電子稱量和包裝，在提高自動化水平和質(zhì)量上有著重要的意義。

物料通過輸送機(jī)（傳送帶）送到振動加料斗，再由此進(jìn)入供料斗，并由供料斗送至下面的稱重料斗，在稱重料斗內(nèi)的物料由懸臂梁型稱重傳感器稱出重量。圓周上同時(shí)有10個稱重料斗，同時(shí)將重量信號輸入PLC的模擬量輸入模塊，巡回檢測并以最快速度找出最接近目標(biāo)重量的稱重料斗的組合。被選中組合的稱重料斗立刻接受相應(yīng)開閉控制器“打開料斗放料”的動作命令，卸料至下面的自動包裝機(jī)中。同時(shí)，被選中組合的稱重料斗釋放物料后立刻被充填上新的物料，進(jìn)入下一工作循環(huán)。這樣，就可以定量包裝松散的糖果等。

本文的設(shè)計(jì)采用懸臂梁式傳感器稱出重量，采用PLC對數(shù)據(jù)進(jìn)行處理，用MCGS組態(tài)軟件實(shí)時(shí)監(jiān)控。PLC控制系統(tǒng)是設(shè)備設(shè)計(jì)的中心，控制系統(tǒng)簡單方便。與傳統(tǒng)的設(shè)備相比我還利用了編程軟件資源（FXGPWIN編程軟件），可以用電腦編程直接連接到現(xiàn)場的PLC，快捷方便。

關(guān)鍵詞： 電子秤 定量包裝 控制系統(tǒng) 傳感器 三菱PLC

ABSTRACT

Automatic packaging scale system is widely used in chemical, foodstuff, food field. It is a very important equipment and has important significance to improve the level of automation in industry measuring field and improve the quality of products. The system applies electronic weighing technology and combines the parameter of quantity package system. Author develops automatic bagging scale that has small, wide measure scale. It is qualified for quantificational package whose stuff is loose.

The center of weighing fixed value controller is transducer. The system well makes use of the PLC's data processing，real-time measure, monitor ability and combines the PLC's logical control ability. Control system is composed of basic weighing fixed value controller and auxiliary PLC. The control system is convenient for automatic bagging scale's local operation.

The control system well makes use of the software resource and adopt the new digital standardization technology to standard system's zero, gain, maximum scale parameter etc. The controller is designed kind operational interface through. keyboard, monitor to carry out the control parameter's initialization, modification.

Key words: automatic packaging scale fixed value controller control system   sensor PLC