本文選題：eMMC + 星載大容量　； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著空間探測(cè)的不斷深入以及任務(wù)需求的多樣化,圖像載荷對(duì)星載存儲(chǔ)器的容量和存儲(chǔ)帶寬的需求越來越高。星載存儲(chǔ)介質(zhì)經(jīng)歷了磁介質(zhì)到半導(dǎo)體介質(zhì)的發(fā)展過程,Flash芯片是當(dāng)前廣泛應(yīng)用的存儲(chǔ)介質(zhì),但其接口控制和壞塊管理復(fù)雜,開發(fā)成本高、周期長。針對(duì)上述問題,本文提出一種采用嵌入式多媒體存儲(chǔ)卡(embedded Multi Media Card,eMMC)構(gòu)建星載大容量存儲(chǔ)的方案,并開展關(guān)鍵技術(shù)研究,工作如下:首先,通過對(duì)國內(nèi)外星載大容量存儲(chǔ)技術(shù)的調(diào)研,分析了星載存儲(chǔ)技術(shù)的發(fā)展趨勢(shì),同時(shí)針對(duì)星載設(shè)備面臨的空間輻射環(huán)境,對(duì)星載容錯(cuò)加固技術(shù)進(jìn)行了調(diào)研,重點(diǎn)調(diào)研了單粒子翻轉(zhuǎn)效應(yīng)的容錯(cuò)加固設(shè)計(jì)和單粒子閂鎖效應(yīng)的防護(hù)技術(shù)。在分析了eMMC的相關(guān)技術(shù)特點(diǎn)后,提出了eMMC陣列存儲(chǔ)訪問控制和基于eMMC星載存儲(chǔ)容錯(cuò)加固兩項(xiàng)關(guān)鍵技術(shù),并構(gòu)建了關(guān)鍵技術(shù)研究所必需的軟硬件系統(tǒng)環(huán)境。其次,在開展eMMC陣列存儲(chǔ)訪問控制技術(shù)研究前,對(duì)eMMC 5.0規(guī)范進(jìn)行了詳細(xì)的研究。采用FPGA作為主控制器,對(duì)eMMC接口控制邏輯進(jìn)行了設(shè)計(jì)和實(shí)現(xiàn),同時(shí),針對(duì)上層應(yīng)用邏輯的讀寫訪問進(jìn)行eMMC讀寫調(diào)度設(shè)計(jì),并針對(duì)eMMC陣列中各芯片的延時(shí)差異問題,提出了一種eMMC陣列同步技術(shù)。再次,針對(duì)eMMC器件和控制系統(tǒng)面臨的空間輻射環(huán)境,本文提出一種面向單粒子翻轉(zhuǎn)效應(yīng)的eMMC主控制器容錯(cuò)加固技術(shù),提出了基于擴(kuò)展?jié)h明碼的FIFO容錯(cuò)技術(shù)和基于三模冗余(Triple Module Redundancy,TMR)技術(shù)的狀態(tài)機(jī)容錯(cuò)加固技術(shù);針對(duì)單粒子閂鎖效應(yīng),根據(jù)電路發(fā)生閂鎖故障的特點(diǎn),提出并進(jìn)行單粒子閂鎖防護(hù)電路的設(shè)計(jì)。最后,針對(duì)上述各項(xiàng)關(guān)鍵技術(shù)研究,提出了實(shí)驗(yàn)測(cè)試驗(yàn)證方案,對(duì)e MMC訪問控制技術(shù)采用板級(jí)測(cè)試方法,對(duì)讀寫功能等進(jìn)行測(cè)試驗(yàn)證;對(duì)單粒子翻轉(zhuǎn)效應(yīng)的容錯(cuò)設(shè)計(jì)和單粒子閂鎖防護(hù)電路,主要進(jìn)行故障注入條件下的測(cè)試驗(yàn)證。測(cè)試結(jié)果顯示,各項(xiàng)設(shè)計(jì)工作符合預(yù)期研究目標(biāo)要求。本文開展的基于eMMC的星載大容量存儲(chǔ)關(guān)鍵技術(shù)研究,將為后續(xù)的實(shí)際工程應(yīng)用提供有效的技術(shù)支持儲(chǔ)備和設(shè)計(jì)開發(fā)支持。
[Abstract]:With the deepening of space exploration and the diversification of mission requirements, the demand of image payload for space-borne memory capacity and storage bandwidth is increasing.Spaceborne storage medium has experienced the development from magnetic medium to semiconductor medium. Flash chip is a widely used storage medium at present, but its interface control and bad block management are complicated, development cost is high, and cycle is long.In order to solve the above problems, this paper proposes a scheme of using embedded multimedia memory card embedded Multi Media Media MMC to construct spaceborne mass storage, and carries out the research of key technologies. The main work is as follows: first of all,Based on the investigation of space-borne large capacity storage technology at home and abroad, the development trend of space-borne storage technology is analyzed. At the same time, aiming at the space radiation environment faced by space-borne equipment, the space-borne fault-tolerant reinforcement technology is investigated.The fault-tolerant reinforcement design of single particle flip effect and the protection technology of single particle latch effect are investigated.After analyzing the relevant technical characteristics of eMMC, two key technologies, eMMC array memory access control and fault tolerance reinforcement based on eMMC on-board storage, are proposed, and the necessary hardware and software system environment for key technology research is constructed.Secondly, before the research of eMMC array memory access control technology, the specification of eMMC 5.0 is studied in detail.The eMMC interface control logic is designed and implemented by using FPGA as the main controller. At the same time, the eMMC read-write scheduling is designed for the read and write access of the upper application logic, and the delay difference of each chip in the eMMC array is discussed.A eMMC array synchronization technique is proposed.Thirdly, aiming at the radiation environment of eMMC devices and control systems, this paper presents a fault-tolerant reinforcement technique of eMMC master controller for single particle flip effect.In this paper, a fault tolerant technique of FIFO based on extended hamming code and a fault tolerant reinforcement technique of state machine based on triple Module redundancy are proposed.A single particle latch protection circuit is proposed and designed.Finally, in view of the above key technology research, proposed the experimental test verification plan, uses the board-level test method to the e MMC access control technology, carries on the test verification to the reading and writing function and so on;The fault-tolerant design of single particle flip effect and the single particle latch protection circuit are mainly tested and verified under the condition of fault injection.The test results show that the design works meet the requirements of the expected research objectives.The research on the key technology of spaceborne mass storage based on eMMC in this paper will provide effective technical support reserve and design and development support for subsequent practical engineering applications.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP333

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