本文選題：編碼 + FPGA　； 參考：《中北大學》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)存儲系統(tǒng)技術也須不斷提高。目前我國研發(fā)出的固態(tài)存儲器已經(jīng)可以滿足多數(shù)航天系統(tǒng)的設計需求。本文針對需要具有斷電續(xù)存功能固態(tài)存儲器的航天系統(tǒng)提出了一種新的硬件設計思路和編碼方式。 設計的具有斷電續(xù)存功能固態(tài)存儲系統(tǒng)是以xilinx公司生產(chǎn)的第三代FPGA作為主控芯片來完成的。根據(jù)設計指標要求，，選擇RS422通信接口完成對航天系統(tǒng)中各種參數(shù)的接收；選擇LVDS低壓差分通信接口完成對航天系統(tǒng)中采集的圖像數(shù)據(jù)片段進行接收。同時，采用雙通道編碼的新技術，使數(shù)據(jù)混合存儲在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)對固態(tài)存儲系統(tǒng)斷電后重新上電存儲的數(shù)據(jù)不覆蓋原數(shù)據(jù)且可進行拆分處理的技術要求，創(chuàng)新性的采用了雙片選交替雙平面的頁編程方式。 在殼體設計上，通過對存儲板進行多重防護，保證了固態(tài)存儲系統(tǒng)接收數(shù)據(jù)的可靠性。最終，設計的固態(tài)存儲系統(tǒng)通過了高G值沖擊和振動等測試，已經(jīng)成功的滿足了航天系統(tǒng)對該固態(tài)存儲系統(tǒng)的技術要求。
[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.
【學位授予單位】：中北大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TP333

【參考文獻】

相關期刊論文 前1條

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

本文編號：1955833