Three-phase fee-controlled smart energy meter based on vertical and horizontal data storage and verification processing method

Abstract

The invention provides a three-phase fee-control intelligent ammeter based on a data longitudinal and transverse storage and verification processing method, and relates to the technical field of electric appliance instruments. The method includes the steps of dividing data to be stored into at least one data block, dividing the data blocks into m transverse rows and n longitudinal lines according to bytes, establishing a transverse verification array used for storing the transverse verification data for each data block, establishing a longitudinal verification array used for storing longitudinal verification data for each data block, conducting accumulation operation on n byte data of each row of each data block, then conducting modular operation, storing the result in the corresponding transverse verification array, conducting exclusive-or operation on m byte data of each line of each data block, then conducting complementary operation, storing the result in the corresponding longitudinal verification array, conducting exclusive-or operation on m byte data in each transverse verification array, then conducting complementary operation, storing the result in the corresponding longitudinal verification array, and writing the data blocks, the transverse verification arrays and the longitudinal arrays in a memorizer.

Description

technical field [0001] The invention relates to the technical field of electrical instruments, in particular to a three-phase cost-controlled intelligent electric energy meter based on vertical and horizontal data storage and verification processing methods. Background technique [0002] During the operation of the three-phase fee-controlled smart energy meter, it is necessary to read or write data such as electricity from the memory in real time. These data play a vital role in the normal measurement of the three-phase cost-controlled smart energy meter. It is necessary to ensure that these data are reliable during storage and reading and writing. During the storage process, the memory itself is disturbed by the outside world or its own performance problems cause some storage areas to fail. At this time, the reliability of the stored data cannot be guaranteed. When the signal for reading and writing data is transmitted in the physical channel, the random noise caused by th...

AI Technical Summary

Problems solved by technology

This method is simple to calculate but the rate of missed detection is relatively high. For example, if two bytes are matched, it cannot be detected.

[0004] Cyclic Redundancy Check (CRC-16 or CRC-32) is often used at present. This method can effectively reduce the missed detection rate, but there is a problem that the amount of calculation is relatively large, especially to When the data to be verified is relatively long or the data is relatively short but frequently read and written, the processing speed is significantly slowed down

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