本文關鍵詞： 測井技術 儀器總線 模擬方法 調度算法　出處：《電子科技大學》2015年碩士論文　論文類型：學位論文

【摘要】：隨著測井技術的快速發(fā)展,各種新型的測井儀器相繼誕生,井下儀器的組合功能越來越強,測井數(shù)據量也越來越大,加之測井作業(yè)所處的惡劣環(huán)境,對研制可靠、穩(wěn)定、傳輸帶寬大、實時性好的測井數(shù)據傳輸系統(tǒng)提出了更高的要求。在測井系統(tǒng)的研制過程中,通常需要掛接井下儀器才能對地面系統(tǒng)和遙傳系統(tǒng)進行檢測和調試。但是井下儀器原理各異,類型眾多,掛接操作繁瑣,耗時耗力,效率極低。因此,迫切需要設計一套能夠模擬各種井下儀器的裝置用于測井系統(tǒng)的檢測及儀器設備調試。針對這一狀況,本文將嵌入式技術與網絡測井相結合,設計實現(xiàn)了一種以DSP F28335和FPGA為主要架構的嵌入式井下模擬儀器,主要用來模擬各種井下儀器的功能,用于測試測井數(shù)據傳輸系統(tǒng)的性能,以及當掛接新的井下儀器時可利用模擬儀器進行前期的功能測試。本設計提出了一種基于時間-深度驅動的數(shù)據采集方式,力圖盡可能真實地模擬測井曲線。此外,考慮到真實的測井儀器一旦被研制生產出來,其接口,傳輸格式等就被固定下來,本文選取了工業(yè)以太網,CAN,RS-485這三種常用的測井數(shù)據傳輸總線,從而可以最大限度地模擬基于不同總線的測井儀器。本文詳細地闡述了井下模擬儀器的設計思路以及實現(xiàn)過程,包括解決方案的設計,系統(tǒng)軟硬件實現(xiàn),測試平臺的搭建以及測試結果分析,主要工作如下:1、研究分析了井下模擬儀器的功能要求,討論并給出了基于F28335的井下模擬儀器的方案。2、利用OrCAD16.3和PADS2007等EDA工具,進行原理圖設計,PCB繪制,實現(xiàn)了井下模擬儀器的硬件平臺。本設計采用的芯片都是工業(yè)級高溫型號,能夠在井下高溫環(huán)境下正常工作。3、完成了底層驅動和應用層代碼的編寫,包括SD驅動和FATFS文件系統(tǒng)的移植,三種總線接口方案的實現(xiàn)。4、基于現(xiàn)有的一套測井數(shù)據傳輸系統(tǒng),完成了測試平臺的搭建,并進行了相關的測試和調度算法的研究。本文所設計的井下模擬儀器,經過現(xiàn)場測試,達到了預期要求,為模擬測井及測試提供了參考。
[Abstract]:With the rapid development of logging technology, a variety of new logging tools have been born, the combination of downhole tools more and more powerful, logging data is also increasing, in addition to logging operations in a bad environment. Higher requirements are put forward for the development of a reliable, stable, large transmission bandwidth and real-time logging data transmission system. Usually, it is necessary to test and debug the surface system and remote transmission system by hanging downhole instruments. However, there are many kinds of downhole instruments with different principles, complicated hanging operation, time-consuming and labor-consuming, and extremely low efficiency. There is an urgent need to design a set of equipment to simulate various downhole tools for logging system detection and instrument equipment debugging. In view of this situation, this paper combines embedded technology with network logging. An embedded downhole simulator based on DSP F28335 and FPGA is designed and implemented, which is mainly used to simulate the functions of various downhole instruments. It can be used to test the performance of logging data transmission system and to test the function of simulation instrument when it is connected with new downhole tools. This design presents a data acquisition method based on time-depth drive. In addition, considering that once a real logging tool is developed and produced, its interface and transmission format are fixed, the industrial Ethernet can is selected in this paper. RS-485, three commonly used logging data transmission buses, can simulate logging tools based on different buses to the maximum extent. This paper describes the design idea and implementation process of downhole simulation tools in detail. Including the solution design, system hardware and software implementation, test platform construction and test results analysis, the main work is as follows: 1, studied and analyzed the functional requirements of downhole simulator. This paper discusses and gives the scheme of downhole simulation instrument based on F28335. It makes use of EDA tools such as OrCAD16.3 and PADS2007 to draw the schematic design and PCB. The hardware platform of the downhole analog instrument is realized. The chips used in this design are all industrial high temperature models, which can work normally in the underground high temperature environment. The bottom driver and the application layer code are completed. Including SD driver and FATFS file system transplantation, the implementation of three bus interface solutions. 4, based on a set of logging data transmission system, completed the construction of the test platform. The downhole simulation instrument designed in this paper has achieved the expected requirements through field tests, which provides a reference for simulation logging and testing.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.83

【參考文獻】

相關期刊論文 前7條

1 王怡紅,陳文輝;面向對象的測井儀器動態(tài)庫設計[J];測井技術;2005年02期

2 姚家驊,姚偉,王建平;現(xiàn)代測井技術發(fā)展的啟示[J];斷塊油氣田;2001年03期

3 呂偉杰;劉魯源;王毅新;;基于CAN總線的TT-FPS調度算法研究及其性能分析[J];中國工程科學;2006年05期

4 李源鴻,敖振浪;CAN總線實現(xiàn)點對點通信和群組廣播的方法[J];廣東氣象;2002年04期

5 雷曉瑜;曹廣忠;;TMS320F28335及其最小應用系統(tǒng)設計[J];電子設計工程;2009年01期

6 譚威;羅仁澤;高文剛;周慧琪;;基于TMS320F28335的DSP最小系統(tǒng)設計[J];工業(yè)控制計算機;2012年04期

7 王俊波;胥布工;;CAN報文實時性分析及在線評估[J];控制與決策;2007年04期

相關博士學位論文 前1條

1 伍瑞卿;電纜傳輸測井高速網絡中關鍵問題的研究[D];電子科技大學;2010年

相關碩士學位論文 前1條

1 王毅新;基于CAN總線的靜態(tài)調度算法及其實驗系統(tǒng)的研究[D];天津大學;2004年

，

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