發(fā)布時(shí)間：2018-01-28 21:32

  本文關(guān)鍵詞： 解碼 高速數(shù)據(jù)采集 FPGA USB SDRAM 乒乓緩存 異步FIFO　出處：《燕山大學(xué)》2015年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：石油關(guān)乎國(guó)計(jì)民生,石油測(cè)井是石油生產(chǎn)過(guò)程的關(guān)鍵。石油測(cè)井技術(shù)包括數(shù)據(jù)采集技術(shù)、處理解釋技術(shù)及地質(zhì)應(yīng)用技術(shù)。本文將針對(duì)現(xiàn)階段石油測(cè)井儀器測(cè)量系數(shù)單一,測(cè)試效率低和功能性、兼容性差等問(wèn)題,結(jié)合現(xiàn)代數(shù)據(jù)采集技術(shù)和處理解釋技術(shù),并針對(duì)AMI(Alternative Mark Inversion)曼徹斯特碼在持氣率測(cè)井系統(tǒng)中應(yīng)用,研究并設(shè)計(jì)了基于FPGA與USB的AMI曼徹斯特解碼系統(tǒng)。首先,針對(duì)石油測(cè)井?dāng)?shù)據(jù)采集卡的缺陷,研究了基于FPGA和USB的高速實(shí)時(shí)數(shù)據(jù)采集卡。在高速實(shí)時(shí)數(shù)據(jù)采集卡設(shè)計(jì)思想基礎(chǔ)上,提出可行性分析及設(shè)計(jì)方案,分別對(duì)基于SDRAM與異步FIFO構(gòu)成的乒乓緩存單元和基于FPGA與USB接口控制器進(jìn)行了詳細(xì)的設(shè)計(jì)。進(jìn)一步設(shè)計(jì)了高速實(shí)時(shí)數(shù)據(jù)采集卡的硬件電路,包括預(yù)處理模塊設(shè)計(jì)、AD轉(zhuǎn)換模塊設(shè)計(jì)、乒乓緩存單元模塊設(shè)計(jì)、USB通信模塊設(shè)計(jì)和電源與復(fù)位模塊設(shè)計(jì),并對(duì)其進(jìn)行了具體實(shí)現(xiàn)。斯特解碼系統(tǒng)軟件。在AMI曼徹斯特解碼軟件設(shè)計(jì)思想的基礎(chǔ)之上,提出可行性分析及設(shè)計(jì)方案,并設(shè)計(jì)了AMI曼碼解碼軟件的整體框架,分別對(duì)實(shí)時(shí)數(shù)據(jù)采集與處理多線(xiàn)程模塊、AMI曼碼解碼模塊、光纖探針持氣率估算模塊和曼碼數(shù)據(jù)存儲(chǔ)顯示回放模塊進(jìn)行了詳細(xì)的分析與設(shè)計(jì)。其次,針對(duì)曼徹斯特解碼軟件的不靈活性和不準(zhǔn)確性,設(shè)計(jì)并實(shí)現(xiàn)了AMI曼徹最后,通過(guò)搭建實(shí)驗(yàn)室軟硬件測(cè)試平臺(tái),分別對(duì)系統(tǒng)的軟硬件部分進(jìn)行測(cè)試實(shí)驗(yàn)。采用Cypress公司開(kāi)發(fā)的測(cè)速軟件USB Data Streamer對(duì)系統(tǒng)高速數(shù)據(jù)采集卡的傳輸速度進(jìn)行測(cè)試,采用黑盒測(cè)試和持氣率測(cè)量實(shí)驗(yàn)平臺(tái)分別對(duì)軟件的光纖信號(hào)采集模式、光纖數(shù)據(jù)存儲(chǔ)模式和光纖數(shù)據(jù)回放模式等功能模塊進(jìn)行測(cè)試,驗(yàn)證解碼系統(tǒng)的可行性和準(zhǔn)確性。
[Abstract]:Petroleum logging is the key to the petroleum production process. Petroleum logging technology includes data acquisition technology. Dealing with interpretation technology and geological application technology, this paper aims at the problems of single measuring coefficient, low testing efficiency and function, poor compatibility and so on. Combined with modern data acquisition technology and processing and interpretation technology, AMI(Alternative Mark version Manchester code is applied in gas holdup logging system. The AMI Manchester decoding system based on FPGA and USB is studied and designed. Firstly, the defects of oil logging data acquisition card are analyzed. The high-speed real-time data acquisition card based on FPGA and USB is studied. Based on the design idea of high-speed real-time data acquisition card, the feasibility analysis and design scheme are put forward. The ping-pong buffer unit based on SDRAM and asynchronous FIFO and the interface controller based on FPGA and USB are designed in detail. Furthermore, the hardware of high-speed real-time data acquisition card is designed. Road. Including preprocessing module design AD conversion module design, ping-pong buffer module module design USB communication module design and power supply and reset module design. On the basis of the design idea of AMI Manchester decoding software, the feasibility analysis and design scheme are put forward. The whole frame of AMI code decoding software is designed, and the multi-thread module of real-time data acquisition and processing is designed. Fiber probe gas holdup estimation module and Mancode data storage display and playback module are analyzed and designed in detail. Secondly, the inflexibility and inaccuracy of Manchester decoding software are discussed. Finally, the software and hardware testing platform of the laboratory is built. The software and hardware of the system were tested by USB Data, which was developed by Cypress. Streamer tests the transmission speed of the system's high-speed data acquisition card. The function modules of the software, such as optical fiber signal acquisition mode, optical fiber data storage mode and optical fiber data playback mode, are tested using black box test and air holdup test platform. Verify the feasibility and accuracy of the decoding system.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：P631.81

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