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Method for quickly verifying electric energy error

A power error and fast technology, applied in the field of error verification, can solve the problems of reducing user test efficiency and prolonging test time, so as to achieve fast and accurate inspection and improve work efficiency

Inactive Publication Date: 2011-09-14
SHENZHEN CLOU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual use, in order to ensure a sufficient number of pulses, the test time needs to be extended, which reduces the user's test efficiency

Method used

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  • Method for quickly verifying electric energy error
  • Method for quickly verifying electric energy error

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Embodiment Construction

[0018] Figure 1 and figure 2 As shown, the present invention provides a fast electric energy error verification method, by introducing the timer interrupt of the microprocessor as the time scale without changing the original counting method, and refining the pulse width measurement of the standard pulse and the detected pulse Accuracy, so that the original can only record integers can be refined to record decimals, when the clock frequency of the microprocessor timer is high enough, the resolution of decimals can meet the requirements of ensuring sufficient power calculation accuracy in the case of a single detected pulse .

[0019] Specific steps are as follows:

[0020] 1. The standard electric energy pulse and the detected electric energy pulse are respectively connected to the external interrupt input port of the microprocessor for error calculation.

[0021] 2. The system starts the timer interrupt. In the timer interrupt, there is a software counter that increases by ...

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Abstract

The invention provides a method for quickly verifying the electric energy error; on the condition of not changing the original counting way, the method introduces a microprocessor timer interrupt as atime scale, refines the pulse width measurement accuracy of a standard pulse and a verified pulse, and leads the pulse which can originally remember the integer to be refined to be capable of remembering the decimal; when the clock frequency of the microprocessor timer is high enough, the resolution of the decimal can ensure enough electric energy calculation accuracy on the condition of a singleverified pulse, thus achieving the purpose of quickly and accurately verifying the electric energy pulse and greatly improving the working efficiency.

Description

technical field [0001] The invention relates to an error checking method, in particular to an electric energy error checking method. Background technique [0002] At present, the error verification of single-phase and three-phase various electric energy meters adopts the pulse number comparison method to calculate the electric energy measurement error of the electric energy meter. Specifically, set the number of pulses to be verified by the tested electric energy meter, and count the number of standard pulses within the time period when the tested electric energy meter outputs the set number of pulses to calculate the electric energy error of the electric energy meter. When using this method, it is necessary to ensure that there are enough standard pulses, and the calculation formula is as follows: Among them, the pulse number of the measured standard pulse is the number of standard pulses in the actual measurement process, and the theoretical pulse number is the number of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R35/04
Inventor 曹锋王颖
Owner SHENZHEN CLOU ELECTRONICS