Electric energy meter battery power consumption automatic monitor and using method

Abstract

The present invention aims to provide a battery power consumption automatic monitor for an electric energy meter, capable of automatically testing battery power consumption and battery voltage of the electric energy meter to replace manual testing of a universal meter. A sampling signal is obtained through a sampling resistor, then battery power consumption is calculated through a metering chip, battery voltage is calculated through AD sampling of a main chip in a single-phase meter, in addition, through the main chip in the single-phase meter, whether the battery voltage and the battery power consumption are in abnormal states is judged, data of the battery voltage and the battery power consumption in the abnormal states are recorded in real time and stored in an E2 memory, then real-time monitoring is performed through a host computer, and the data of the battery voltage and the battery power consumption in the abnormal states also can be read.

Description

Technical field [0001] The invention relates to the field of smart meters, in particular to an automatic monitoring instrument for battery power consumption of an electric energy meter and a use method. Background technique [0002] The key to the correct measurement of the time-sharing power and the stepped power of the electric meter is the accuracy of the time of the electric meter. The wrong time will cause the error rate switching, the time error of the frozen electric power transfer and other problems that affect the normal measurement of the electric meter. The reason that affects the accuracy of the clock is that the clock chip malfunctions or is powered off. The main reasons that affect the normal operation of the clock chip are as follows: clock chip crystal oscillator, temperature compensation, clock battery and battery loop. [0003] At present, battery undervoltage meters are constantly being returned to the company on the market side. In these after-sales returns, a ...

AI Technical Summary

Problems solved by technology

[0003] At present, in the market, there are constantly battery undervoltage meters being returned to the company. It is difficult to judge whether it is a battery problem or a circuit design defect of the meter itself. Only through a large number of accelerated simulations However, these accelerated simulation tests not only have a long test period, but also have high costs, and the difficulty of manual testing is relatively large.

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