Electric energy meter calibrating method

An electric energy meter, electric energy meter verification technology, applied in the measurement of electrical variables, measuring devices, instruments and other directions, can solve the problems of increased production cost, complex algorithm, process, long time, etc., to save RAM space, reduce data flutter, algorithm Efficient effect

Active Publication Date: 2014-06-25
WASION GROUP HLDG
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AI Technical Summary

Problems solved by technology

This method has several defects: 1. It takes half an hour to several hours to complete a round of meter calibration, which takes a long time.
2. There must be 485 bus and special software and equipment support
3. The upper computer meter calibratio

Method used

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  • Electric energy meter calibrating method

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Example Embodiment

[0039] In the specific implementation, the present invention is embedded in the general program of the electric energy meter in the form of an independent subroutine module. The method of sending communication commands to calibrate meters (communication calibration unit).

[0040] like figure 1 As shown, according to the concept of modularization, the present invention is divided into several functional units, including a button-triggered self-calibration unit and a communication meter calibration unit.

[0041] like figure 2 As shown, the button-triggered meter calibration unit includes a button input unit and a meter-calibration self-running unit.

[0042] The key input unit includes the source value input of the table body, resets the default calibration parameters, sets the calibration coefficient, judges the state in the factory, and triggers the calibration.

[0043] The meter calibration self-running unit includes the judgment of the total time of meter calibration...

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Abstract

The invention discloses an electric energy meter calibrating method. The method comprises the steps that first, the source value of the electrical parameter of an electric energy meter calibration table body is acquired; meter calibrating coefficients are reset for a calibrated meter; then, the table body is manually switched to the next meter calibrating point; the stability of the table body is judged according to the current measured value of the calibrated meter and the source value of the table body, and if the table body is unstable, it needs to wait until the table body is stable; afterwards, the current state of the table body is judged, and the meter calibrating points are automatically selected for the calibrated meter; then, the precision of the calibrated meter is obtained according to the current measured value, the filtering value and the source value of the table body of the calibrated meter; afterwards, the meter calibrating coefficients of the calibrated meter are obtained respectively according to a set formula; at last, the meter calibrating coefficients are set and stored. According to the electric energy meter calibrating method, a 485 bus channel is needless, the support of related upper computer software and equipment is of no need, the state of the table body and the state of the electric energy meter of the electric energy meter calibration table body can be intelligently distinguished, and the whole meter calibrating process only needs dozens of seconds at the soonest.

Description

technical field [0001] The invention relates to a meter calibration method of an electric energy meter. Background technique [0002] At present, in the field of meter calibration of electric energy meters, the method of sending meter calibration commands through the special upper computer software through the 485 bus is mostly adopted in China. This method has several defects: 1, one round of table calibration needs half an hour to several hours to complete, and the time is long. 2. There must be 485 bus and special software and equipment support. 3. The upper computer meter calibration software takes up a lot of resources, and the algorithm and process are complicated, so it is not easy to transplant to the electric energy meter using the single-chip microcomputer system. These defects cause an increase in manufacturing cost. Contents of the invention [0003] The purpose of the present invention is to provide a meter calibration method that can significantly reduce t...

Claims

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Application Information

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IPC IPC(8): G01R35/04
Inventor 刘建福马亮
Owner WASION GROUP HLDG
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