A data storage method for electric energy meter power-down protection
A technology for power failure protection and data storage, which is used in electrical digital data processing, redundancy in operation for data error detection, and redundancy code for error detection, etc., which can solve the problem of insufficient reliability of power meter storage in power failure. and other problems, to achieve the effect of low energy storage requirements
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[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0020] refer to figure 1 , a power-down protection data storage method of an electric energy meter, in which a power-down protection data block 101, a pointer PA 104, and a pointer PB 105 are set in the RAM of the electric energy meter MCU, and the data requiring power-down protection are gathered together and added with a CRC Verify and store in the power-failure protection data block 101.
[0021] A cyclic backup storage area A 102 and a cyclic backup storage area B 103 are set in the non-volatile memory of the electric energy meter, and there are n and m in the cyclic backup storage area A 102 and the cyclic backup storage area B 103 respectively There are a number of backup data blocks for storing data in the power-down protection data block 101, n and m may be the same or different.
[0022] When the electric energy meter is in...
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