【摘要】：串行設(shè)備具有容易實現(xiàn)及方便維護(hù)的特點，并且有較好的傳輸特性，在工控設(shè)備中得到廣泛使用。隨著嵌入式技術(shù)和網(wǎng)絡(luò)技術(shù)的迅猛發(fā)展，在一些應(yīng)用場景中，需要將串行設(shè)備接入網(wǎng)絡(luò)。因此，需要尋求一種方案，用來解決串行設(shè)備和網(wǎng)絡(luò)之間的互聯(lián)問題。 本文設(shè)計了串口與網(wǎng)絡(luò)的轉(zhuǎn)接系統(tǒng)，實現(xiàn)了數(shù)據(jù)在串口與網(wǎng)絡(luò)間透明傳輸。系統(tǒng)對數(shù)據(jù)鏈路與RS-232串行鏈路之間的通信數(shù)據(jù)進(jìn)行轉(zhuǎn)換與傳輸，對來自網(wǎng)絡(luò)的數(shù)據(jù)幀進(jìn)行判斷，轉(zhuǎn)換成串行數(shù)據(jù)發(fā)送到串行設(shè)備上；處理來自串行設(shè)備的數(shù)據(jù)流，將其格式轉(zhuǎn)換為在網(wǎng)絡(luò)中傳輸?shù)臄?shù)據(jù)幀。 針對工控設(shè)備的實際需求，本文在s3c2410的硬件平臺和嵌入式Linux的環(huán)境下，設(shè)計了系統(tǒng)總體方案，，以實現(xiàn)在RS-232鏈路與網(wǎng)絡(luò)接口之間進(jìn)行數(shù)據(jù)傳輸。在應(yīng)用程序設(shè)計中，設(shè)計了數(shù)據(jù)通信和參數(shù)配置兩個模塊。數(shù)據(jù)通信模塊中，在串口與網(wǎng)口間實現(xiàn)透明傳輸；在程序設(shè)計時采用信號量的同步機(jī)制，實現(xiàn)了系統(tǒng)的實時通信。參數(shù)配置模塊移植Boa服務(wù)器，通過CGI程序設(shè)計，生成動態(tài)頁面。用戶通過瀏覽器在地址欄輸入Web服務(wù)器的IP，對轉(zhuǎn)接器進(jìn)行管理，遠(yuǎn)程進(jìn)行系統(tǒng)的參數(shù)配置。 最后對系統(tǒng)的功能、性能進(jìn)行了測試。本文設(shè)計的轉(zhuǎn)換器成本低廉、功能完善、性能優(yōu)異，可滿足工控設(shè)備的應(yīng)用需求。
[Abstract]:Serial equipment is easy to realize and easy to maintain, and has better transmission characteristics, so it is widely used in industrial control equipment. With the rapid development of embedded technology and network technology, serial devices need to be connected to the network in some application scenarios. Therefore, a solution is needed to solve the problem of interconnection between serial devices and networks. In this paper, a serial port and network connection system is designed to realize the transparent transmission of data between serial port and network. The system converts and transmits the communication data between the data link and the RS-232 serial link, judges the data frame from the network, converts the serial data to the serial device, processes the data flow from the serial device, Converts its format to a data frame transmitted over a network. According to the actual demand of industrial control equipment, this paper designs the overall scheme of the system under the s3c2410 hardware platform and embedded Linux environment, in order to realize the data transmission between the RS-232 link and the network interface. In the application program design, two modules of data communication and parameter configuration are designed. In the data communication module, the transparent transmission is realized between the serial port and the network port, and the real-time communication of the system is realized by using the signal synchronization mechanism when the program is designed. Parameter configuration module transplant Boa server, through CGI program design, generate dynamic pages. The user manages the adapter through the IP, of the Web server input into the address bar in the browser, and the parameter configuration of the system is carried out remotely. Finally, the function and performance of the system are tested. The converter designed in this paper has the advantages of low cost, perfect function and excellent performance.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP334.7

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本文編號：2290917