發(fā)布時(shí)間：2018-05-30 15:43

  本文選題：編碼 + FPGA��； 參考：《中北大學(xué)》2015年碩士論文

【摘要】：為了滿足航天科技快速發(fā)展的需求，固態(tài)存儲(chǔ)系統(tǒng)技術(shù)也須不斷提高。目前我國(guó)研發(fā)出的固態(tài)存儲(chǔ)器已經(jīng)可以滿足多數(shù)航天系統(tǒng)的設(shè)計(jì)需求。本文針對(duì)需要具有斷電續(xù)存功能固態(tài)存儲(chǔ)器的航天系統(tǒng)提出了一種新的硬件設(shè)計(jì)思路和編碼方式。 設(shè)計(jì)的具有斷電續(xù)存功能固態(tài)存儲(chǔ)系統(tǒng)是以xilinx公司生產(chǎn)的第三代FPGA作為主控芯片來(lái)完成的。根據(jù)設(shè)計(jì)指標(biāo)要求，，選擇RS422通信接口完成對(duì)航天系統(tǒng)中各種參數(shù)的接收；選擇LVDS低壓差分通信接口完成對(duì)航天系統(tǒng)中采集的圖像數(shù)據(jù)片段進(jìn)行接收。同時(shí)，采用雙通道編碼的新技術(shù)，使數(shù)據(jù)混合存儲(chǔ)在flash的共享區(qū)，保證了數(shù)據(jù)的保密性；flash選擇的是三星公司生產(chǎn)的K9WBG08U1M芯片；根據(jù)航天系統(tǒng)對(duì)固態(tài)存儲(chǔ)系統(tǒng)斷電后重新上電存儲(chǔ)的數(shù)據(jù)不覆蓋原數(shù)據(jù)且可進(jìn)行拆分處理的技術(shù)要求，創(chuàng)新性的采用了雙片選交替雙平面的頁(yè)編程方式。 在殼體設(shè)計(jì)上，通過(guò)對(duì)存儲(chǔ)板進(jìn)行多重防護(hù)，保證了固態(tài)存儲(chǔ)系統(tǒng)接收數(shù)據(jù)的可靠性。最終，設(shè)計(jì)的固態(tài)存儲(chǔ)系統(tǒng)通過(guò)了高G值沖擊和振動(dòng)等測(cè)試，已經(jīng)成功的滿足了航天系統(tǒng)對(duì)該固態(tài)存儲(chǔ)系統(tǒng)的技術(shù)要求。
[Abstract]:In order to meet the rapid development of space science and technology, solid-state storage system technology must be continuously improved. At present, the solid state memory developed in China can meet the design needs of most space systems. In this paper, a new hardware design and coding method is proposed for spaceflight systems with power off memory. The design of solid state memory system with power off storage is based on the third generation FPGA produced by xilinx Company as the main control chip. According to the requirements of the design index, the RS422 communication interface is selected to receive the various parameters in the space system, and the LVDS low-voltage differential communication interface is selected to complete the receiving of the image data fragments collected in the space system. At the same time, using the new technology of dual-channel coding, the data is mixed stored in the shared area of flash, which ensures the confidentiality of the data and the choice of K9WBG08U1M chip produced by Samsung. According to the technical requirement that the data of the solid state storage system can be split and processed without overwriting the original data after the power off of the solid state storage system, a new method of page programming is innovatively adopted. In the case design, the reliability of the solid state storage system is ensured by the multiple protection of the storage board. Finally, the solid state storage system has passed the high G value shock and vibration tests, which has successfully met the technical requirements of the solid state storage system.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TP333

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 王曉東,郝志航;大容量固態(tài)記錄器技術(shù)[J];光學(xué)精密工程;2001年04期

本文編號(hào)：1955833