發(fā)布時間：2018-07-26 11:58

【摘要】：隨著工業(yè)控制自動化程度的不斷提高，生產(chǎn)規(guī)模的不斷擴(kuò)大，傳統(tǒng)的獨(dú)立儀表已經(jīng)不能滿足控制系統(tǒng)向分散化、網(wǎng)絡(luò)化、智能化方向發(fā)展的要求，一種新型的基于現(xiàn)場總線的智能儀表測控網(wǎng)絡(luò)應(yīng)運(yùn)而生。本文重點(diǎn)研究了基于CAN總線的大型集中潤滑系統(tǒng)設(shè)計的關(guān)鍵技術(shù)和實(shí)現(xiàn)方法。 本文首先闡述了測控系統(tǒng)的網(wǎng)絡(luò)化發(fā)展方向及常用的網(wǎng)絡(luò)通信技術(shù)，并分析了現(xiàn)場總線技術(shù)的優(yōu)越性；研究了大型集中潤滑系統(tǒng)的發(fā)展現(xiàn)狀。 第二，通過研究大型集中潤滑系統(tǒng)的功能要求，，設(shè)計了系統(tǒng)的網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)及通信網(wǎng)絡(luò)；深入研究了CAN總線的通信協(xié)議和技術(shù)規(guī)范，并將其各項技術(shù)應(yīng)用于大型集中潤滑系統(tǒng)的設(shè)計。 第三，完成了大型集中潤滑系統(tǒng)通信接口電路的硬件設(shè)計，在此基礎(chǔ)之上，對系統(tǒng)節(jié)點(diǎn)進(jìn)行編址；提出了網(wǎng)絡(luò)實(shí)現(xiàn)單播、組播和廣播的方法；分析并設(shè)置了系統(tǒng)通信采用的速率。 第四，完成了系統(tǒng)各個節(jié)點(diǎn)的硬件設(shè)計；設(shè)計了系統(tǒng)的網(wǎng)絡(luò)通信協(xié)議，并分析了系統(tǒng)實(shí)現(xiàn)節(jié)點(diǎn)的動態(tài)增加與去除、系統(tǒng)故障的自診斷等功能的過程；完成了控制中心的圖形界面軟件及各個下位機(jī)節(jié)點(diǎn)的程序設(shè)計。 最后，指出了該大型集中潤滑系統(tǒng)的不足之處，及將來的改進(jìn)方向。 研究結(jié)果表明：基于CAN總線的大型集中潤滑系統(tǒng)能夠滿足上千個潤滑節(jié)點(diǎn)的網(wǎng)絡(luò)通信和潤滑控制要求，并且具有較高的可靠性，較強(qiáng)的實(shí)時性，以及較低的成本。
[Abstract]:With the continuous improvement of industrial control automation and the continuous expansion of production scale, the traditional independent instruments can no longer meet the requirements of the development of the control system towards the direction of decentralization, networking and intelligence. A new intelligent instrument measurement and control network based on fieldbus emerges as the times require. This paper focuses on the key technology and implementation of the design of a large centralized lubrication system based on CAN bus. In this paper, the development direction of network and the common network communication technology of measurement and control system are introduced, and the advantages of fieldbus technology are analyzed, and the development status of large-scale centralized lubrication system is studied. Secondly, by studying the functional requirements of the large-scale centralized lubrication system, the network topology and communication network of the system are designed, and the communication protocols and technical specifications of the CAN bus are deeply studied. And its various technologies are applied to the design of a large centralized lubrication system. Thirdly, the hardware design of the communication interface circuit of the large-scale centralized lubrication system is completed, on the basis of which, the node of the system is addressed, and the method of unicast, multicast and broadcast in the network is put forward. The rate of system communication is analyzed and set. Fourthly, the hardware design of each node of the system is completed, the network communication protocol of the system is designed, and the process of realizing the functions of dynamic adding and removing of nodes, self-diagnosis of system fault and so on is analyzed. The graphical interface software of the control center and the program design of each lower computer node are completed. Finally, the shortcomings of the large centralized lubrication system and the direction of improvement in the future are pointed out. The results show that the large centralized lubrication system based on CAN bus can meet the network communication and lubrication control requirements of thousands of lubrication nodes, and has higher reliability, stronger real-time and lower cost.
【學(xué)位授予單位】：河南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP273;TH117.2

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