Electric meter main board with metering circuit

Abstract

The invention discloses an electric meter main board with a metering circuit. The electric meter main board with the metering circuit is characterized by comprising a microprocessor, a metering circuit, a communication module, a display module, an expense control module, a clock module, a multifunctional output module and a power supply module, wherein the metering module, the communication module, the display module, the expense control module, the clock module and the multifunctional output module are connected with the microprocessor and the power supply module; the metering circuit comprises a metering module connected with a power frequency power supply; the metering module comprises a metering chip, a current sampling loop, a voltage sampling loop and a pulse generating loop; the current sampling circuit and the voltage sampling circuit are connected with the power frequency power supply and the metering chip. The current signal and the voltage signal of the power frequency power supply are monitored and are directly converted into pulse to be outwards sent to the microcontroller through the metering module; the subsequent metering work is completed through the microcontroller, so that the structure of the circuit is simple; the functions are complete.

Description

【Technical field】 [0001] The invention relates to the field of electric energy meters, in particular to an electric energy meter main board provided with metering circuits. 【Background technique】 [0002] With the construction of the smart grid, single-phase and three-phase intelligent simulation smart energy meters have been widely used in power metering, but many problems have been found in the process of use. The manufacturer is responsible for the processing. Due to the limitation of the technical level of the on-site meter installation electrician and operation and maintenance personnel, it is impossible to make a complete and systematic fault report on the fault of the smart energy meter. In-depth research on various types of failures that occur. Therefore, in order to improve the technical level of meter installation and connection electricians and operation and maintenance personnel, understand and be familiar with the working principle of single-phase and three-pha...

AI Technical Summary

Problems solved by technology

[0003] The existing metering module of the simulated electric energy meter cannot provide the metering function in the state of stealing electricity, and the students cannot master the ability to detect user stealing electricity through the learning of the simulation stage

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