基于DPC31的PROFIBUS-DP嵌入式從站模塊開發(fā)
發(fā)布時間：2018-11-03 11:49
【摘要】：現(xiàn)場總線控制系統(tǒng)已逐漸發(fā)展為繼集散控制系統(tǒng)之后的新一代控制系統(tǒng),成為當(dāng)前控制領(lǐng)域的熱點之一。在眾多的現(xiàn)場總線標準中,過程現(xiàn)場總線(PROFIBUS)標準以其國際化、開放式、不依賴于生產(chǎn)商的種種優(yōu)勢,成為當(dāng)前世界及國內(nèi)爭相研究的對象。PROFIBUS包括PROFIBUS-DP、PROFIBUS-PA、PROFIBUS-FMS三個系列,其中PROFIBUS-DP是目前歐洲乃至全球應(yīng)用最廣泛的現(xiàn)場總線系統(tǒng),因其通信速率快(最高可達12M)、抗干擾能力強、安裝簡便、擴展方便,使得它適用于各種工業(yè)自動化領(lǐng)域。 目前國內(nèi)對于PROFIBUS-DP技術(shù)的應(yīng)用和研究主要以系統(tǒng)集成和工程應(yīng)用為主,研發(fā)還是集中在國外的一些大公司,這就造成了這些大公司對這些產(chǎn)品的壟斷,使得DP總線產(chǎn)品使用成本增加,阻礙了PROFIBUS-DP技術(shù)在我國的應(yīng)用和發(fā)展。因此,研究開發(fā)具有自主知識產(chǎn)權(quán)的PROFIBUS-DP產(chǎn)品目前就顯得尤為重要。 本文針對DP現(xiàn)場總線在我國的應(yīng)用和發(fā)展現(xiàn)狀,在研究分析PROFIBUS-DP協(xié)議結(jié)構(gòu)和通信原理的基礎(chǔ)上,給出了單片機+DPC31+RS-485驅(qū)動電路+雙口RAM的DP嵌入式從站的開發(fā)方案,以單片機+DPC31+RS-485驅(qū)動電路實現(xiàn)DP從節(jié)點功能,以單片機+雙口RAM實現(xiàn)與外部設(shè)備數(shù)據(jù)交換功能,并在此基礎(chǔ)上完成了軟硬件實現(xiàn)。最后根據(jù)實際應(yīng)用的條件和環(huán)境,搭建了DP智能從站的通信測試平臺,并對本嵌入式模塊進行了功能測試,測試結(jié)果達到了預(yù)期目標。在完成了PROFIBUS-DP智能從站功能的基礎(chǔ)上,本文又給出了進一步的工作,在本模塊上增加SIM1-2調(diào)制解調(diào)電路實現(xiàn)PA從節(jié)點功能,并給出了軟硬件設(shè)計方法以及通信測試方案,并最終完成了軟硬件方面的工作。本文的特色與創(chuàng)新之處在于：①采用通信協(xié)議芯片DPC31來實現(xiàn)DP從節(jié)點功能,具有更好的擴展性、應(yīng)用也更靈活。②采用雙口RAM實現(xiàn)與外部設(shè)備的數(shù)據(jù)交換,方便、快速、簡潔!③整個軟件從底層開發(fā),技術(shù)不再受限于國外,也無需購買國外公司的生產(chǎn)許可。
[Abstract]:Fieldbus control system has gradually developed into a new generation of control system after distributed control system, and has become one of the hot spots in the current control field. Among the many fieldbus standards, the process fieldbus (PROFIBUS) standard has become the object of worldwide and domestic research due to its internationalized, open and independent advantages of manufacturers. PROFIBUS includes PROFIBUS-DP,PROFIBUS-PA, Among the three series of PROFIBUS-FMS, PROFIBUS-DP is the most widely used fieldbus system in Europe and even the whole world. Because of its high communication rate (up to 12M), strong anti-interference ability, simple installation and easy expansion, Make it applicable to all kinds of industrial automation field. At present, the domestic application and research of PROFIBUS-DP technology mainly focus on system integration and engineering application, and R & D is still concentrated in some large companies abroad, which results in the monopoly of these products by these large companies. The cost of using DP bus products is increased, which hinders the application and development of PROFIBUS-DP technology in China. Therefore, the research and development of PROFIBUS-DP products with independent intellectual property rights is particularly important. This paper aims at the application and development of DP fieldbus in our country. Based on the research and analysis of PROFIBUS-DP protocol structure and communication principle, this paper presents the development scheme of DP slave station of single-chip microcomputer DPC31 RS-485 drive circuit with dual-port RAM, which is based on the research and analysis of PROFIBUS-DP protocol structure and communication principle. The function of slave node of DP is realized by DPC31 RS-485 drive circuit of single chip microcomputer, and the data exchange function with external equipment is realized by RAM of single chip microcomputer. On the basis of this, the software and hardware are realized. Finally, according to the practical application conditions and environment, the communication test platform of DP intelligent slave station is built, and the function of the embedded module is tested, and the test results reach the expected goal. On the basis of completing the function of PROFIBUS-DP intelligent slave station, the further work is given in this paper. The SIM1-2 modulation and demodulation circuit is added to the module to realize the function of PA slave node, and the design method of hardware and software and the communication test scheme are also given. Finally, the work of software and hardware is finished. The features and innovations of this paper are as follows: (1) the communication protocol chip (DPC31) is used to realize the slave node function of DP, which has better expansibility and more flexible application. (2) the dual-port RAM is used to realize the data exchange with external equipment, which is convenient and fast. Concise! 3 the whole software is developed from the bottom, technology is no longer restricted to foreign countries, nor need to buy the production license of foreign companies.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP273
本文編號：2307703
[Abstract]:Fieldbus control system has gradually developed into a new generation of control system after distributed control system, and has become one of the hot spots in the current control field. Among the many fieldbus standards, the process fieldbus (PROFIBUS) standard has become the object of worldwide and domestic research due to its internationalized, open and independent advantages of manufacturers. PROFIBUS includes PROFIBUS-DP,PROFIBUS-PA, Among the three series of PROFIBUS-FMS, PROFIBUS-DP is the most widely used fieldbus system in Europe and even the whole world. Because of its high communication rate (up to 12M), strong anti-interference ability, simple installation and easy expansion, Make it applicable to all kinds of industrial automation field. At present, the domestic application and research of PROFIBUS-DP technology mainly focus on system integration and engineering application, and R & D is still concentrated in some large companies abroad, which results in the monopoly of these products by these large companies. The cost of using DP bus products is increased, which hinders the application and development of PROFIBUS-DP technology in China. Therefore, the research and development of PROFIBUS-DP products with independent intellectual property rights is particularly important. This paper aims at the application and development of DP fieldbus in our country. Based on the research and analysis of PROFIBUS-DP protocol structure and communication principle, this paper presents the development scheme of DP slave station of single-chip microcomputer DPC31 RS-485 drive circuit with dual-port RAM, which is based on the research and analysis of PROFIBUS-DP protocol structure and communication principle. The function of slave node of DP is realized by DPC31 RS-485 drive circuit of single chip microcomputer, and the data exchange function with external equipment is realized by RAM of single chip microcomputer. On the basis of this, the software and hardware are realized. Finally, according to the practical application conditions and environment, the communication test platform of DP intelligent slave station is built, and the function of the embedded module is tested, and the test results reach the expected goal. On the basis of completing the function of PROFIBUS-DP intelligent slave station, the further work is given in this paper. The SIM1-2 modulation and demodulation circuit is added to the module to realize the function of PA slave node, and the design method of hardware and software and the communication test scheme are also given. Finally, the work of software and hardware is finished. The features and innovations of this paper are as follows: (1) the communication protocol chip (DPC31) is used to realize the slave node function of DP, which has better expansibility and more flexible application. (2) the dual-port RAM is used to realize the data exchange with external equipment, which is convenient and fast. Concise! 3 the whole software is developed from the bottom, technology is no longer restricted to foreign countries, nor need to buy the production license of foreign companies.
【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP273
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