本文選題：離心風(fēng)機(jī) + PLC��； 參考：《北京郵電大學(xué)》2011年碩士論文

【摘要】：工業(yè)自動化是21世紀(jì)工控行業(yè)發(fā)展的趨勢,它是伴隨著微電子、計(jì)算機(jī)、通信網(wǎng)絡(luò)的發(fā)展應(yīng)運(yùn)而生的。一直以來PLC始終處于工業(yè)自動化控制領(lǐng)域的主戰(zhàn)場,在工業(yè)自動化控制方面發(fā)揮著巨大作用,但數(shù)據(jù)的計(jì)算處理與管理能力較弱,而且不能提供良好的人機(jī)界面。這就需要與PC機(jī)有機(jī)的結(jié)合,使兩者優(yōu)勢互補(bǔ),組成最高效的控制系統(tǒng)。 本論文在這個(gè)背景下以工業(yè)離心風(fēng)機(jī)為研究對象設(shè)計(jì)了一套自動監(jiān)控系統(tǒng),主要工作如下： (1)找出風(fēng)機(jī)運(yùn)行過程中涉及的現(xiàn)場儀器、儀表和需要采集、控制的信號量；分析風(fēng)機(jī)開機(jī)、停機(jī)、正常運(yùn)行及報(bào)警等狀態(tài)的聯(lián)鎖條件以及它們之間的邏輯控制關(guān)系；接著對信號量進(jìn)行數(shù)字量信號/模擬量信號的分類。然后根據(jù)程序容量的大小選擇合適的西門子PLC-S7300CPU的型號和相應(yīng)的輸入/輸出模塊,進(jìn)行符號的設(shè)定和I/O口地址的分配。最后,利用西門子提供的編程軟件STEP7進(jìn)行程序的編寫和輸入。 (2)為實(shí)現(xiàn)實(shí)時(shí)監(jiān)控運(yùn)行狀態(tài),使用DELPHI軟件的基礎(chǔ)組件進(jìn)行了人機(jī)界面的設(shè)計(jì)。主要涉及的界面有登錄界面、結(jié)構(gòu)界面、油路界面、報(bào)警界面、參數(shù)界面；這些界面把各種狀態(tài)參數(shù)(如轉(zhuǎn)速、溫度、振動、油量等)集于一幅畫面,不僅能及時(shí)更新風(fēng)機(jī)運(yùn)行狀態(tài),還能進(jìn)行報(bào)警分析以及歷史記錄的保存。此界面系統(tǒng)主要側(cè)重點(diǎn)是易操作性、直觀性、人性化。 (3)上位機(jī)與PLC的數(shù)據(jù)交換是通過西門子公司提供的MPI通信協(xié)議和PRODAVE軟件包實(shí)現(xiàn)的。硬件上只需用編程電纜連接PC機(jī)的COM口和PLC的MPI接口；軟件上利用DELPHI調(diào)用PRODAVE中的相關(guān)庫函數(shù)對PLC各存儲區(qū)中的數(shù)據(jù)進(jìn)行讀寫,實(shí)現(xiàn)PC機(jī)與PLC的數(shù)據(jù)交換。
[Abstract]:Industrial automation is the development trend of industrial control industry in the 21st century. It comes into being with the development of microelectronics, computers and communication networks. PLC has always been in the industrial automation control field of the main battlefield, in industrial automation control plays a great role, but the ability of data processing and management is weak, and can not provide a good man-machine interface. This needs to combine with PC organically, make both advantages complement each other, constitute the most efficient control system. In this paper, an automatic monitoring system is designed based on the industrial centrifugal fan. The main work is as follows: (1) to find out the field instruments, instruments and signals needed to be collected and controlled during the operation of the fan, and to analyze the interlocking conditions of the fan in the conditions of start-up, shutdown, normal operation and alarm, as well as the logical control relations between them; Then the semaphore is classified into digital signal and analog signal. Then the appropriate Siemens PLC-S7300CPU model and the corresponding input / output module are selected according to the size of the program, and the symbols are set and the I / O port address is assigned. Finally, the programming software STEP7 provided by Siemens is used to write and input the program. In order to monitor the running state in real time, the basic components of DELPHI software are used to design the man-machine interface. The interface mainly involves login interface, structure interface, oil circuit interface, alarm interface, parameter interface; these interfaces gather various state parameters (such as speed, temperature, vibration, oil quantity, etc.) in a picture. Not only can timely update the fan running state, but also alarm analysis and historical records preservation. The main focus of this interface system is easy to operate, intuitive, humanized. The data exchange between upper computer and PLC is realized by MPI communication protocol and PRODAVE software package provided by Siemens. In hardware, only the COM port of PC and the MPI interface of PLC are connected by programming cable, and the data in each storage area of PLC is read and written by DELPHI in the software, and the data exchange between PC and PLC is realized.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH432;TP273

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 張玉萍;強(qiáng)力旋壓機(jī)床控制系統(tǒng)的研究[D];山東理工大學(xué);2013年

，

本文編號：1933645