【摘要】：近年來,因為體感輸入技術掀起了人機交互技術第三次革命,并有巨大的市場價值,所以對體感輸入技術進行研究的人越來越多。體感輸入技術的核心是模式識別技術,涉及了大量圖像算法,我們采用的方案是FPGA和ARM相配合,利用FPGA并行處理的速度優(yōu)勢和ARM對圖像處理的特殊算法優(yōu)化的優(yōu)勢,來實現(xiàn)體感輸入的動作手勢模式識別。 在體感輸入設備產(chǎn)品化的過程中,FPGA和ARM,上位機之間需要交互大量數(shù)據(jù),這就需要一個標準的數(shù)據(jù)總線接口。USB總線技術以其在實時性,通信速率,可靠性等方面的優(yōu)勢,使其目前在商業(yè)上的應用已經(jīng)十分廣泛。經(jīng)過綜合考慮,在我們的項目中,FPGA與外界通信時也采用USB協(xié)議。 本文就是針對USB協(xié)議中的ULPI協(xié)議,提出了相應的硬件電路與FPGA實現(xiàn)的解決方案。論文首先簡單介紹了USB總線發(fā)展歷程,總線的拓撲結(jié)構和電氣物理特性。然后重點分析了ULPI協(xié)議的規(guī)范,ULPI接口的信號說明和工作方式,并說明了采用ULPI的PHY芯片的依據(jù),同時介紹了相關硬件平臺。最后重點論述了FPGA如何實現(xiàn)ULPI協(xié)議,及各個功能模塊的分析,并從設備枚舉開始,詳細說明了各模塊的具體工作流程,并對設備進行了實際通信測試。 本文所設計系統(tǒng)現(xiàn)在已經(jīng)應用于實際工程中,實際測試結(jié)果表明,該實現(xiàn)方案使得數(shù)據(jù)通訊傳輸穩(wěn)定,效率高。由于是純邏輯設計,后期也可用于產(chǎn)品化,能夠滿足項目中的實際需求,對USB設備的接口FPGA實現(xiàn)與Soc集成有著指導和借鑒意義。
[Abstract]:In recent years, because of the third revolution of human-computer interaction technology and great market value, more and more people have studied the technology of perception input. The core of somatosensory input technology is pattern recognition technology, which involves a large number of image algorithms. The scheme we adopt is the cooperation of FPGA and ARM, the speed advantage of FPGA parallel processing and the advantage of ARM in optimizing special image processing algorithms. In order to realize the recognition of motion gesture pattern of somatosensory input. In the process of production of body sensation input equipment, FPGA and ARM need to exchange a large amount of data between host computer, which requires a standard data bus interface. USB bus technology has the advantages of real-time, communication rate, reliability and so on. It is now widely used in business. After comprehensive consideration, we also adopt USB protocol when communicating with the outside world in our project. Aiming at the ULPI protocol in USB protocol, this paper puts forward the corresponding hardware circuit and the solution of FPGA implementation. Firstly, the paper introduces the development of USB bus, its topology and physical properties. Then, the signal description and working mode of ULPI protocol specification are analyzed, and the basis of PHY chip using ULPI is explained, and the related hardware platform is also introduced. In the end, how to implement ULPI protocol in FPGA and the analysis of each function module are discussed, and the detailed workflow of each module is explained from the point of equipment enumeration, and the actual communication test is carried out. The system designed in this paper has been applied to practical engineering now. The actual test results show that this scheme makes the data communication stable and efficient. Because it is pure logic design and can be used for production in the later stage, it can meet the actual requirements of the project. It has guidance and reference significance for the FPGA implementation of USB device interface and Soc integration.
【學位授予單位】：大連海事大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TP334.7;TP336

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