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The working principle of a prepaid electricity meter.
The following essay will explore the working principle of a prepaid electricity meter.
The electric energy meter comprises two primary functions.
1, Firstly, the electric energy metering part utilises a dedicated integrated electric energy metering chip to calculate the sampling signals of voltage and current. It also generates metering pulses that represent electric energy directly for electric energy error verification and counts the electric energy to the functional processing part of the MCU.
2, Secondly, the microprocessor MCU control part calculates electrical energy based on the electrical pulses from the metering part. It exchanges data through the RF card interface and uses a wide temperature range LCD for display. Additionally, it governs the magnetic holding relay in accordance with the predetermined parameters, thereby regulating the user's electricity consumption.
