【摘要】：通信網(wǎng)絡(luò)是工業(yè)自動化系統(tǒng)的重要組成部分,是系統(tǒng)中運行參數(shù)信息、設(shè)備控制信息、故障報警信息、維護(hù)信息等傳遞的媒介。本文設(shè)計的ARCNET網(wǎng)絡(luò)以全自動智能紡紗機(jī)系統(tǒng)為工作平臺,該系統(tǒng)由多個嵌入式系統(tǒng)組成,每個系統(tǒng)具有兩種以上的不同通信網(wǎng)絡(luò),包括ARCNET、CAN、ARBUS等。其中ARCNET網(wǎng)絡(luò)采用優(yōu)化的令牌傳輸機(jī)制,擁有很多適用于工業(yè)控制現(xiàn)場的良好性能,包括可靠性高、通信速度快、時間可預(yù)知性、傳輸距離遠(yuǎn)、組網(wǎng)靈活及節(jié)點進(jìn)退網(wǎng)絡(luò)操作簡單等優(yōu)點,是一種理想的現(xiàn)場總線技術(shù),特別適合于需要編組調(diào)度的系統(tǒng)。首先,通過對ARCNET網(wǎng)絡(luò)信息傳輸機(jī)制的分析,根據(jù)整個全自動智能紡紗機(jī)中各系統(tǒng)節(jié)點的物理布局,并考慮時延和傳輸距離的綜合因素,選擇了總線/星型混合拓?fù)浣Y(jié)構(gòu)作為網(wǎng)絡(luò)組網(wǎng)方式;其次,ARCNET網(wǎng)絡(luò)占據(jù)了OSI模型的物理層、數(shù)據(jù)鏈路層、應(yīng)用層,據(jù)此設(shè)計了ARCNET各網(wǎng)絡(luò)節(jié)點;然后,通過軟件設(shè)計完成ARCNET網(wǎng)絡(luò)中數(shù)據(jù)鏈路層控制和應(yīng)用層實現(xiàn),其中ARCNET網(wǎng)絡(luò)診斷軟件設(shè)計用于檢查網(wǎng)絡(luò)運行狀態(tài),并對出現(xiàn)的故障做出相應(yīng)的處理,以確保整個網(wǎng)絡(luò)的正常通訊。同時,軟件設(shè)計中還包括了ARCNET與CAN協(xié)議轉(zhuǎn)換部分,與CAN協(xié)議分析儀結(jié)合實現(xiàn)特定應(yīng)用環(huán)境中ARCNET協(xié)議分析儀的主要功能,用于對本系統(tǒng)中ARCNET網(wǎng)絡(luò)診斷及主要性能參數(shù)的測試;最后,將現(xiàn)場實際測出的數(shù)據(jù)信號波形與ARCNET協(xié)議理論幀格式進(jìn)行了對比,并對本ARCNET網(wǎng)絡(luò)的主要性能進(jìn)行了評估,同時,針對系統(tǒng)時延進(jìn)行了理論計算及測試分析�，F(xiàn)場測試結(jié)果表明,基于ARCNET網(wǎng)絡(luò)的全自動智能紡紗機(jī)系統(tǒng)的9個單節(jié)點組成的網(wǎng)絡(luò)在工業(yè)現(xiàn)場能穩(wěn)定的工作,實現(xiàn)了對系統(tǒng)運行參數(shù)、設(shè)備控制信息、故障報警信息、維護(hù)信息等的傳遞,完全滿足設(shè)計要求。
[Abstract]:Communication network is an important part of industrial automation system. It is the transmission medium of operation parameter information, equipment control information, fault alarm information and maintenance information in the system. The ARCNET network designed in this paper is based on the automatic intelligent spinning machine system. The system is composed of multiple embedded systems, each system has more than two different communication networks, including ARCNET,CAN,ARBUS and so on. Among them, ARCNET network adopts the optimized token transmission mechanism, and has many good performances suitable for industrial control field, including high reliability, high communication speed, time predictability and long transmission distance. The advantages of flexible networking and simple network operation are ideal fieldbus technology, which is especially suitable for the system that needs marshalling and scheduling. First of all, through the analysis of the ARCNET network information transmission mechanism, according to the physical layout of each system node in the whole automatic intelligent spinning machine, and considering the comprehensive factors of delay and transmission distance, The bus / star hybrid topology is chosen as the networking mode. Secondly, the ARCNET network occupies the physical layer, the data link layer, the application layer of the OSI model, according to which the network nodes of the ARCNET are designed. The data link layer control and application layer in ARCNET network are realized by software design. The ARCNET network diagnosis software is designed to check the running state of the network, and to deal with the faults in order to ensure the normal communication of the whole network. At the same time, the software design also includes ARCNET and CAN protocol conversion part, combined with CAN protocol analyzer to realize the main functions of ARCNET protocol analyzer in a specific application environment, used to diagnose the ARCNET network and test the main performance parameters in the system. Finally, the data waveform measured in the field is compared with the theoretical frame format of ARCNET protocol, and the main performance of the ARCNET network is evaluated. At the same time, the system delay is calculated and tested. The field test results show that the network composed of 9 single nodes of the automatic intelligent spinning machine system based on ARCNET network can work stably in the industrial field, and realizes the system operation parameters, equipment control information and fault alarm information. Maintain the transmission of information, fully meet the design requirements.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273

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