【摘要】：本文課題來源于新疆某煤礦生產(chǎn)企業(yè)的篩分集控系統(tǒng)自動化升級改造項(xiàng)目。結(jié)合全國和新疆的煤炭行業(yè)的發(fā)展趨勢,消費(fèi)市場對煤炭的產(chǎn)量需求和質(zhì)量要求以及企業(yè)目前篩分集控系統(tǒng)存在的缺陷和問題。根據(jù)現(xiàn)場設(shè)備的運(yùn)行狀況和西門子200-PLC的功能特點(diǎn),提出了基于S7-200PLC的煤礦篩分控制系統(tǒng)的開發(fā)方案。通過建立以PLC為核心控制器的篩分集散控制系統(tǒng)方案,利用組態(tài)軟件設(shè)計(jì)計(jì)算機(jī)監(jiān)控畫面,可以有效的改變企業(yè)目前篩分系統(tǒng)自動化程度低、運(yùn)行不穩(wěn)定、生產(chǎn)過程無法做到實(shí)時動態(tài)監(jiān)控等問題。結(jié)合企業(yè)現(xiàn)有的篩分集控系統(tǒng)的硬件設(shè)備,從系統(tǒng)運(yùn)行的穩(wěn)定性、安全性、可靠性和經(jīng)濟(jì)性的角度出發(fā)綜合考慮。選取合適的硬件設(shè)施,構(gòu)建現(xiàn)場設(shè)備與PLC控制器之間的Mod Bus總線通訊,PLC與上位計(jì)算機(jī)之間進(jìn)行TCP/IP通訊,可以很好的解決通訊的穩(wěn)定性、及時性和開放性的問題。利用編程軟件完成對篩分系統(tǒng)的控制流程設(shè)計(jì),進(jìn)行相應(yīng)的控制程序編寫,實(shí)現(xiàn)系統(tǒng)的自動監(jiān)控的功能。控制程序的主要部分是完成PLC對現(xiàn)場設(shè)備的數(shù)據(jù)采集、指令傳輸、啟�？刂�、手/自動選擇、集控與就地切換等功能的程序設(shè)計(jì)工作;輔助部分是對潤滑油系統(tǒng)的油箱液位、潤滑脂溫度和流量進(jìn)行PID計(jì)算控制,并實(shí)現(xiàn)系統(tǒng)的自動化監(jiān)控。再通過組態(tài)王軟件建立系統(tǒng)的監(jiān)控界面和報警畫面以及第三方Access數(shù)據(jù)庫等,最終構(gòu)成篩分系統(tǒng)的計(jì)算機(jī)的動態(tài)監(jiān)控系統(tǒng)。利用現(xiàn)有的條件對系統(tǒng)進(jìn)行通訊、數(shù)據(jù)采集與傳輸、自動控制以及設(shè)備啟停仿真運(yùn)行測試,不斷的修正設(shè)計(jì)方案和程序的邏輯結(jié)構(gòu),最后成功的完成測試工作。為系統(tǒng)的實(shí)際投入運(yùn)行提供了可靠性、可行性支持,測試結(jié)果表明設(shè)計(jì)的控制方案具有很好的可行性。
[Abstract]:This paper comes from the project of automatic upgrading and upgrading of screening and centralized control system in a coal mine production enterprise in Xinjiang. Combined with the development trend of the coal industry in China and Xinjiang, the demand for coal production and quality in the consumer market and the defects and problems existing in the present enterprise screening and centralizing control system are also discussed. According to the running condition of field equipment and the function characteristic of Siemens 200-PLC, the development scheme of coal mine screening control system based on S7-200PLC is put forward. By establishing the scheme of screening and distributing control system with PLC as the core controller and using configuration software to design the computer monitor picture, it can effectively change the low degree of automation and unstable operation of the screening system in enterprises at present. Production process can not achieve real-time dynamic monitoring and other issues. Combined with the existing hardware equipment of the sieving centralized control system, this paper considers the stability, security, reliability and economy of the system. Selecting appropriate hardware facilities, constructing Mod Bus bus communication between field equipment and PLC controller, and TCP/IP communication between PLC and host computer can solve the problems of stability, timeliness and openness of communication. The control flow of the screening system is designed by programming software, and the corresponding control program is compiled to realize the function of automatic monitoring of the system. The main part of the control program is to complete the data acquisition, instruction transmission, start / stop control, hand / automatic selection, centralized control and local switching functions of PLC. The auxiliary part is to calculate and control the level of oil tank, the temperature and flow rate of lubricating grease by PID, and to realize the automatic monitoring of the system. Then the monitor interface and alarm screen of the system and the third party Access database are established by Kingview software. Finally, the computer dynamic monitoring system of screening system is constructed. Using the existing conditions of communication, data acquisition and transmission, automatic control and equipment start and stop simulation test, constantly modify the design scheme and the logical structure of the program, and finally successfully complete the test work. It provides the reliability and feasibility support for the practical operation of the system. The test results show that the designed control scheme is very feasible.
【學(xué)位授予單位】：新疆大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD452;TP273

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