NandFlash data management method for electric power acquisition equipment

A technology for power acquisition and data management, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve problems such as shortening the service life of NandFlash, inability to extend the life cycle of NandFlash, and inability to use load balancing technology. , to achieve the effect of improving space utilization

Active Publication Date: 2019-04-02
NINGBO SANXING MEDICAL & ELECTRIC CO LTD
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Problems solved by technology

However, since existing power collection equipment generally uses NandFlash as the main memory, once NandFlash stores data too frequently, it will seriously shorten the service life of NandFlash
In addition, because the hardware of the existing power collection equipment is in a KB-level small memory environment, it will not be able to use the load balancing technology usually used to cache a large amount of data; even if the power collection equipment uses NFTL technology for wear leveling for the stored data, it still cannot meet The purpose of extending the life cycle of NandFlash in power collection equipment

Method used

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  • NandFlash data management method for electric power acquisition equipment

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Embodiment Construction

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 As shown, the NandFlash data management method of the power acquisition device in the present embodiment includes the following steps:

[0028] Step 1, search and select the erasing unit block with the smallest byte in the NandFlash physical area of ​​the power collection device, and mark the erasing unit block with the smallest byte as the smallest erasing unit block;

[0029] Step 2, divide the minimum erasing unit block into N minimum writing units; wherein, N≥1; the minimum erasing unit block in this embodiment is 128K, and each write in the minimum erasing unit block The unit is 512 bytes; each smallest writing unit is numbered in sequence, for example, No. 1 smallest writing unit, No. 2 smallest writing unit, ..., No. N smallest writing unit;

[0030] Step 3, set up the data cache area of ​​the first preset byte...

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Abstract

The invention relates to a NandFlash data management method for electric power acquisition equipment. The method comprises the following steps of:searching and selecting an erase unit block with a minimum byte in a NandFlash physical area in power acquisition equipment for management; selecting an erase unit with minimum bytes as a minimum erase unit block, after dividing the minimum erase unit block into N minimum units, obtaining a first writable unit, storing data in a data cache area into the first writable unit, once the offset of the first writable unit is N-1, erasing the data in each minimum write-in unit in the minimum erasing unit block, and rewriting the cache data from the first minimum write-in unit in the minimum erase unit block, so that the tail winding processing of each minimum write-in unit is realized, more storage space is vacated, the previous data is prevented from occupying the space of the minimum erase unit block, the frequent storage of the data into the NandFlash can be avoided, and the space utilization rate of the NandFlash can be improved.

Description

technical field [0001] The invention relates to the field of power collection equipment, in particular to a NandFlash data management method of the power collection equipment. Background technique [0002] With the increasingly widespread application of power collection equipment, the complexity of on-site applications, and the need for frequent storage of huge data volumes, Flash life has become a key indicator affecting the product life cycle. [0003] During the operation of the power collection equipment, some data needs to be saved according to the high-frequency cycle of the second level. However, since existing power collection devices generally use NandFlash as the main memory, once NandFlash stores data too frequently, it will seriously shorten the service life of NandFlash. In addition, because the hardware of the existing power collection equipment is in a KB-level small memory environment, it will not be able to use the load balancing technology usually used to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0608G06F3/0652
Inventor 俞建伟刘宁
Owner NINGBO SANXING MEDICAL & ELECTRIC CO LTD
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