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Method for managing high reliability of electric energy measurement data

A technology of metering data and management methods, applied in the direction of measuring electrical variables, measuring devices, instruments, etc., can solve problems such as no self-correction and recovery measures for metering data, lack of metering data protection, and other data chaos, etc., to achieve recovery and update Accurate, reliable preservation, and reliability guaranteed effect

Inactive Publication Date: 2010-12-22
ZHUHAI ZHONGHUI MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The defects of existing electronic energy meters in the process of processing metering data are: (1) there is no or insufficient self-correction and recovery measures for metering data;

Method used

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  • Method for managing high reliability of electric energy measurement data
  • Method for managing high reliability of electric energy measurement data
  • Method for managing high reliability of electric energy measurement data

Examples

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Embodiment 1

[0012] Embodiment 1: In this embodiment, the measurement of an electric energy meter is taken as an example for illustration. The electric energy meter has an interrelated RAM (usually the RAM provided by the MCU) and an EEPROM (customarily called an internal card). This energy metering data storage method mainly comprises: one, the division of preservation and backup area: the current metering data area, the first backup area and the power-off data storage area are set in the RAM, and three electric quantity backup areas (the name is respectively EEPROM) are set in the EEPROM The second backup area, the third backup area of ​​EEPROM, the fourth backup area of ​​EEPROM, certainly also can be more power backup areas) and a power-down data backup area (for storing metering data and related state data); two, storage The sum verification process, including the storage and verification of normal operation and the storage and power-on data recovery during power failure, are respectiv...

Embodiment 2

[0019] Embodiment 2: Embodiment 1 mainly guarantees the reliability of metering data from the preservation, backup, update and error correction of metering data, and this embodiment will analyze the main causes of data corruption in the current metering data area of ​​RAM, and provide corresponding solution.

[0020] During the data block processing process, other modules of the electric energy metering system need to judge the position pointed by the data block pointer in real time to see if it exceeds the specified area. If it exceeds or enters an illegal area, the pointer position is initialized to avoid damage to other data, especially metering data.

[0021] Other module data of the electric energy metering system, such as the communication module, display module, and prepayment module, all need to process a large amount of data, and the reliability of this part of the data indirectly threatens the reliability of the metering data. There are two main aspects to the damag...

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Abstract

The invention discloses a method for managing the high reliability of electric energy measurement data, mainly comprising the steps of preserving and dividing backup regions, preserving the measurement data and recovering the current measurement data. The invention ensures that the data can be preserved more accurately by setting a plurality of data backup regions, provides full preparation for recovering the data, ensures that the data can be recovered or updated more accurately through various judgments and verifications and effectively ensures the reliability of the measurement data. Besides, the position of an indicator is judged before a random storage receives the data and the length of a buffer zone is reasonably set, thereby the measurement data can not be damaged by other modules.

Description

technical field [0001] The invention relates to the technical field of metering and data processing, in particular to a highly reliable management method for electric energy metering data. Background technique [0002] The main working principle of the electronic energy meter is: the current and voltage sampling module converts the large current and AC voltage flowing through the power supply line into a suitable small current and small voltage signal, which is converted into a pulse signal that varies with power by the metering module, and the micro-processing The meter (MCU) receives the power pulse signal, updates the metering data and saves it, and the metering data is stored in the electrically erasable read-only memory (hereinafter referred to as EEPROM) through the random access memory (hereinafter referred to as RAM-Random-access memory) of the MCU. )Inside. [0003] Interference is ubiquitous in the operation of electronic energy meters. With the advancement and de...

Claims

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Application Information

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IPC IPC(8): G01R22/06
Inventor 冉际华任智仁贾俊周宣邓廷唐振中李朝培张波刘振雨史谦许永平
Owner ZHUHAI ZHONGHUI MICROELECTRONICS
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