本文關(guān)鍵詞：LVDS轉(zhuǎn)千兆以太網(wǎng)適配器的設(shè)計及應(yīng)用　出處：《中國科學技術(shù)大學》2017年碩士論文　論文類型：學位論文

  更多相關(guān)文章： FPGA 以太網(wǎng) LVDS 成像光譜儀 適配器

【摘要】：伴隨著經(jīng)濟高速發(fā)展而來的愈來愈嚴重的大氣污染問題,使得大氣污染治理更加緊迫,而在治理過程中,對大氣的監(jiān)測是不可缺少的一環(huán)。本課題所屬的課題組長期以來從事研制用于大氣監(jiān)測的成像光譜儀,目前已形成星載和機載多種產(chǎn)品。為了更方便的對成像光譜儀產(chǎn)品進行測試,針對成像光譜儀的接口都是LVDS接口的特點,設(shè)計了 LVDS轉(zhuǎn)USB2.0適配器,LVDS轉(zhuǎn)USB3.0適配器和LVDS轉(zhuǎn)千兆以太網(wǎng)適配器,通過使用這些適配器,可以方便的將成像光譜儀與普通PC或者筆記本電腦連接起來,提高了測試系統(tǒng)的便捷性。本文的主要內(nèi)容是對LVDS轉(zhuǎn)千兆以太網(wǎng)適配器的設(shè)計及應(yīng)用。本文的主要內(nèi)容分為以下三個方面:第一部分介紹了 LVDS轉(zhuǎn)千兆以太網(wǎng)適配器設(shè)計的研究背景和意義,簡述了目前成像光譜儀的數(shù)據(jù)采集系統(tǒng)在國內(nèi)外的研究現(xiàn)狀。對于以太網(wǎng)技術(shù)的誕生和發(fā)展做了簡單的概述,然后介紹了 OSI參考模型和TCP/IP協(xié)議族,并重點說明了適配器所用到了 UDP協(xié)議、IP協(xié)議、ARP協(xié)議和以太網(wǎng)幀的技術(shù)細節(jié),包括數(shù)據(jù)包格式,每個字段所代表的意義和各個協(xié)議的工作方式。第二部分的重點是適配器的設(shè)計。包括適配器的硬件邏輯設(shè)計、硬件電路設(shè)計和上位機測試軟件的設(shè)計。按照功能的不同,將整體邏輯設(shè)計細分為四個模塊逐個設(shè)計,分別是串并轉(zhuǎn)換模塊,數(shù)據(jù)緩沖模塊、UART模塊和UDP/IP模塊。介紹了各個模塊的功能,說明了在設(shè)計過程中遇到的問題和解決的辦法。在硬件電路設(shè)計中,介紹了電源模塊電路、FPGA電路、MAC芯片電路、PHY芯片電路和外圍接口電路,說明了提高信號傳輸質(zhì)量的方法。上位機采用C++編寫,分成了四個模塊來完成不同的功能。第三部分是對適配器的測試,包括功能測試和性能測試,測試結(jié)果表明適配器可以完成穩(wěn)定傳輸圖像數(shù)據(jù)的功能,最高傳輸速率可達140Mbps,誤碼率為0。
[Abstract]:With the rapid development of economy, more and more serious air pollution problems, make the air pollution control more urgent, and in the process of control. The monitoring of the atmosphere is an indispensable part. The subject group has been developing an imaging spectrometer for atmospheric monitoring for a long time. At present, there are many kinds of products on board and airborne. In order to test the imaging spectrometer more conveniently, the interface of imaging spectrometer is the characteristic of LVDS interface. The LVDS to USB2.0 adapters LVDS to USB3.0 adapters and LVDS to Gigabit Ethernet adapters are designed by using these adapters. The imaging spectrometer can be easily connected to a PC or laptop. The main content of this paper is the design and application of LVDS to gigabit Ethernet adapter. The main contents of this paper are as follows: the first part introduces. The research background and significance of LVDS to gigabit Ethernet adapter design. The present research status of imaging spectrometer data acquisition system at home and abroad is briefly described, and the birth and development of Ethernet technology are briefly summarized. Then, the OSI reference model and TCP/IP protocol family are introduced, and the technical details of UDP protocol IP protocol and Ethernet frame are emphasized. Includes the packet format, the meaning that each field represents and how each protocol works. The second part focuses on the design of the adapter, including the hardware logic of the adapter. According to the different functions, the whole logic design is divided into four modules one by one, namely serial-parallel conversion module, data buffer module. UART module and UDP/IP module. The functions of each module are introduced, the problems encountered in the design process and the solution are explained. In the hardware circuit design, the power supply module circuit is introduced. The FPGA circuit is composed of FPGA chip circuit and peripheral interface circuit. The method of improving the quality of signal transmission is explained. The upper computer is programmed with C language. It is divided into four modules to complete different functions. The third part is the testing of the adapter, including functional testing and performance testing, the test results show that the adapter can achieve the function of stable transmission of image data. The maximum transmission rate is up to 140 Mbpsand the error rate is 0.
【學位授予單位】：中國科學技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：X851;TP393.11

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