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Satellite-borne NAND Flash storage management system

A storage management and space-borne technology, applied in the direction of electrical digital data processing, input/output to record carrier, input/output process of data processing, etc., to achieve high reliability, take into account power consumption, and improve reliability

Active Publication Date: 2021-01-05
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system is mainly aimed at enhancing the real-time performance of onboard data and the performance of file management, and does not involve the reliability of data storage

Method used

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  • Satellite-borne NAND Flash storage management system
  • Satellite-borne NAND Flash storage management system
  • Satellite-borne NAND Flash storage management system

Examples

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Embodiment Construction

[0042] Such as figure 1 , the on-board NAND Flash management system includes a data processing module, a data reading and writing module, a refresh function module, an ECC verification module, a bad block management module and a NAND Flash interface control module;

[0043] Data processing module, used for calculating and processing data;

[0044] The data read-write module is used between the data processing module and the ECC verification module to write and read data;

[0045] ECC verification module, which detects and corrects the data input and output of the data reading and writing module;

[0046] Refresh function module, for performing data erasing operation;

[0047] Bad block management module, which judges and records bad blocks in NAND Flash;

[0048] The NAND Flash interface control module manages the information transmitted between the NAND Flash and the data processing module; receives the information sent by the ECC verification module, the refresh function ...

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Abstract

The invention provides an NAND Flash high-reliability storage management system for on-orbit use of a micro-satellite. The NAND Flash high-reliability storage management system comprises a data processing module, a data read-write module, a refreshing function module, an ECC verification module, a bad block management module and an NAND Flash interface control module. The NAND Flash interface control module has a two-out-of-three mode and a cold backup mode, the use mode is determined through an external control signal, and the working number of the control module is selected through a switchmatrix in different modes. The management system is connected with an NAND Flash chip through a GPIO (General Purpose Input / Output) port, and has the expansion capability of serial and parallel dimensions. The ECC verification module is constructed on the basis of the ping-pong operation principle, and the NAND Flash bad block table is managed and updated in combination with the external memory. In order to cope with large-scale errors, a refreshing function for the control module is designed. The high reliability of the NAND Flash storage management system is ensured through multiple modes, and meanwhile, the overall power consumption is considered.

Description

technical field [0001] The invention relates to the field of spacecraft data storage, in particular to an onboard NAND Flash storage management system. Background technique [0002] With the development of aerospace technology and microelectronics technology, the functional density of micro-satellites has increased, and breakthroughs have been made in the reliability of components and satellites, which has gradually moved micro-satellites from technical verification to mature commercial applications. Compared with the traditional Zhongda satellite, it has obvious advantages in cost, manufacturing speed, emergency response and other aspects. [0003] The electrical system of a microsatellite generally includes an integrated electronic system, a power supply system, and a measurement and control system. With the expansion of satellite functions, positioning systems, intelligent processing and load information processing systems have gradually joined the electrical system of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F11/10
CPCG06F3/0679G06F3/0614G06F11/1044
Inventor 楼海君涂实磊王慧泉金仲和
Owner ZHEJIANG UNIV
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