Test system and method for adjusting clock error of intelligent electric meter

Abstract

The invention discloses a test system and method for adjusting a clock error of an intelligent electric meter. According to the test system for adjusting a clock error of an intelligent electric meter, a host computer is connected with a temperature detection module, a clock test module, a second pulse drive module, and a data processing and error display module through a communication module; thetemperature detection module is configured to detect ambient temperature of the intelligent electric meter; the second pulse drive module and the clock test module are configured to connect a secondpulse output by the intelligent electric meter to the clock test module when the ambient temperature of the intelligent electric meter is detected; the clock test module is connected to the data processing and error display module, and is configured to receive the pulse output by the second pulse drive module, test the clock error, and send the test result to the data processing and error displaymodule; and the data processing and error display module is configured to receive the test result of the clock error sent by the clock test module, and display the test result through the host computer.

Description

technical field [0001] The invention relates to the technical field of smart meters, in particular to a clock error adjustment test system and method for smart meters. Background technique [0002] As an instrument for measuring electric energy, the electric energy meter is also called an electric meter, a fire meter, an electric energy meter, and a kilowatt-hour meter. Strict requirements, especially in the cost control function and time-sharing measurement, have higher requirements for the accuracy of the clock, so the daily timing error of the electric energy meter must be strictly tested before leaving the factory, so that the time-sharing of the electric energy meter Metering performance meets the requirements. The accuracy of the daily timing error depends on the clock chip of the electric energy meter or the internal clock module of the single-chip microcomputer. In order to achieve the accuracy of the clock, temperature compensation is often used. Its initial clock...

AI Technical Summary

Problems solved by technology

If the clock error linearity of the clock chip is not very good, it will not be able to get a high score

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