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A fast storage method for electric meter power failure data

A technology for fast storage and electrical data, applied in the direction of electrical digital data processing, redundant data error detection, redundant code error detection, etc., can solve the operation data error, reduce the battery design working time, Incorrect written data and other issues, to achieve the effect of fast storage

Active Publication Date: 2022-05-17
NINGBO JIANAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the electrolytic capacitor cannot meet the requirements, and the early intervention of the battery will greatly reduce the design working time of the battery
When the battery power is exhausted, the written data will be incorrect, which will cause the fault of running data error

Method used

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  • A fast storage method for electric meter power failure data

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Embodiment Construction

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

[0027] A method for fast storage of electric meter power-down data, such as figure 1 As shown, two continuous data block A and data block B are set in the RAM of the electric energy meter MCU, the pointer PB points to the starting address of the data block B, and a storage area C is opened in the non-volatile memory. To store the content stored in data block A and data B when the power is off, the length of data block A is fixed, and the length of data block B is not fixed. Set A1, A2, A3 in sequence in data block A;

[0028] When the energy meter judges that the power is off, the steps are as follows:

[0029] (1) Obtain the current time as the power-off time plus CRC check code and store it in A1.

[0030] (2) More than 40 events need to be recorded when the power is off. The sequence of these events has been preset. The energy meter pro...

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Abstract

In the present invention, two continuous data blocks A and B are set in the RAM, the pointer PB points to the starting address of the data block B, and a storage area C is set up in the non-volatile memory, which is used to store the storage when the power is turned off. The content of data block A and data B. Through the improvement of the data storage structure and method, the invention realizes that only a small amount of real-time data such as voltage and current needs to be stored when the power is off, without affecting the accuracy of the data, and it can also be quickly acquired when the power is turned on, and the present invention can realize the power-off data. Fast storage.

Description

technical field [0001] The invention relates to a method for quickly storing event record data before the electric energy meter enters dormancy after power failure. Background technique [0002] According to the requirements of the Q / GDW 10354-2020 Smart Energy Meter Functional Specification issued by the State Grid Corporation of China, when the meter stops working, the event records related to the stored voltage and current must be completed. The recorded content includes more than 40 events such as undervoltage, loss of voltage, overvoltage, overcurrent, loss of current, phase failure, and reverse phase sequence. [0003] According to the general processing method, the energy meter needs to store the relevant event records that have occurred after judging the power failure, and then the MCU enters the sleep state to achieve the purpose of reducing power consumption. However, this processing method has huge operational risks under certain working conditions. [0004] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/10G06F11/14
CPCG06F11/1004G06F11/1441Y02D10/00
Inventor 蒋卫平金波章恩友钟祖安马益平姚晓峰金宇周斌刘灿毛伟胡益波李家佳盛旭朝
Owner NINGBO JIANAN ELECTRONICS