【摘要】：CAN總線由于其通信速率高、可靠性強和連接方便等特點被廣泛應(yīng)用,其應(yīng)用范圍包括汽車工業(yè)、醫(yī)療設(shè)備以及工業(yè)自動化等領(lǐng)域。由于CAN控制器只提供了兩層開放式系統(tǒng)互聯(lián)參考模型:物理層和數(shù)據(jù)鏈路層。而在工業(yè)控制網(wǎng)絡(luò)的組態(tài)和互聯(lián)等方面,由于CAN在定義之初并未定義標(biāo)準(zhǔn)的應(yīng)用層,導(dǎo)致在實際應(yīng)用中各個廠家對應(yīng)用層的定義各不相同,造成同樣的CAN報文因應(yīng)用層對其解釋的不同而產(chǎn)生了不同的功能含義,使這些設(shè)備間不能相互直接通信。為了解決系統(tǒng)中各節(jié)點的兼容性問題,需要制定統(tǒng)一的應(yīng)用層協(xié)議。"自動化CAN用戶和制定商協(xié)會"(CiA,CAN in Automation),制定CANopen協(xié)議便是一種開放式的CAN總線應(yīng)用層協(xié)議。為實現(xiàn)快速組網(wǎng)及在線調(diào)試,需要相應(yīng)的CANopen網(wǎng)絡(luò)配置及調(diào)試軟件。但目前CANopen網(wǎng)絡(luò)配置及調(diào)試軟件存在功能單一、操作復(fù)雜、數(shù)據(jù)顯示方式不靈活等缺點。本論文針對以上問題設(shè)計了一種集成化的CANopen配置軟件。本文首先介紹了 CAN總線及CANopen協(xié)議應(yīng)用背景與現(xiàn)狀,然后針對CANopen網(wǎng)絡(luò)配置及調(diào)試過程中的功能需求,對系統(tǒng)具體功能進行了分析及總體設(shè)計。本課題軟件設(shè)計采用模塊化的設(shè)計思想,對系統(tǒng)配置模塊、網(wǎng)絡(luò)管理模塊、實時顯示模塊三個功能模塊的處理流程進行了詳細(xì)設(shè)計并采用上位機通過發(fā)送NMT和SDO對象來對網(wǎng)絡(luò)節(jié)點進行相應(yīng)的配置和管理工作,增強了網(wǎng)絡(luò)配置和調(diào)試過程的工作效率。最后對軟件所實現(xiàn)的功能進行了功能測試,實驗結(jié)果表明,所實現(xiàn)的軟件實現(xiàn)了所有的設(shè)計功能。
[Abstract]:CAN bus has been widely used because of its high communication rate, strong reliability and convenient connection. its application scope includes automobile industry, medical equipment and industrial automation. Because the CAN controller only provides two layers of open system interconnection reference model: physical layer and data link layer. In the configuration and interconnection of industrial control network, because CAN does not define the standard application layer at the beginning of the definition, each manufacturer has different definitions of the application layer in practical applications, resulting in different functional meanings of the same CAN message due to the different interpretation of the application layer, so that these devices can not communicate directly with each other. In order to solve the compatibility problem of each node in the system, it is necessary to formulate a unified application layer protocol. "Automation CAN users and developers Association" (CiA,CAN in Automation),) CANopen protocol is an open CAN bus application layer protocol. In order to realize fast networking and online debugging, the corresponding CANopen network configuration and debugging software are needed. However, at present, CANopen network configuration and debugging software has some shortcomings, such as single function, complex operation, inflexible data display and so on. In this paper, an integrated CANopen configuration software is designed to solve the above problems. This paper first introduces the application background and present situation of CAN bus and CANopen protocol, and then analyzes and designs the specific functions of the system according to the functional requirements of CANopen network configuration and debugging. The software design of this subject adopts the modular design idea, designs the processing flow of the three functional modules of the system configuration module, the network management module and the real-time display module in detail, and uses the upper computer to configure and manage the network nodes by sending NMT and SDO objects, which enhances the working efficiency of the network configuration and debugging process. Finally, the function of the software is tested, and the experimental results show that the software realizes all the design functions.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273;TP311.52

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