Single-phase smart electric meter with wireless meter reading function

Abstract

The invention relates to the technical field of the smart electric meter, to a single-phase smart electric meter with a wireless meter reading function. The single-phase smart electric meter comprises an electric power signal sampling module, a single-phase three-wire metering unit, and a micro controller, wherein the electric power signal sampling module, the single-phase three-wire metering unit, and the micro controller are successively connected; and the micro controller calculates the positive electric energy E1, reverse electric energy E2, and net electric energy E. In addition, the single-phase smart electric meter also includes an LCD display module, a power module, an RTC and backup battery module, a pulse output module, a positive electric energy storage unit, a reverse electric energy storage unit, a net electric energy storage and a wireless communication module, wherein the LCD display module, the power module, the RTC and backup battery module, the pulse output module, the positive electric energy storage unit, the reverse electric energy storage unit, the net electric energy storage and the wireless communication module are connected with the micro controller. The wireless communication module is linked to a remote meter reading device by a wireless communication channel, thereby realizing remote meter reading. According to the invention, respective accumulation, metering, and storage of the positive and reverse time-sharing electric energy as well as functions of real-time measurement, load recording, and remote meter reading and the like can be realized. And problems that the existing electric meter can not carry out bidirectional power supply energy settlement, remote meter reading, and electric energy quality monitoring can be solved.

Description

technical field [0001] The invention relates to the technical field of smart electric meters, in particular to a single-phase smart electric meter with a wireless meter reading function. Background technique [0002] Existing ordinary single-phase energy meters generally only have the following functions: [0003] Metering: cumulative metering of forward electric energy. [0004] Time-of-use metering: The electric energy meter has 4 tariffs, 80 daily periods, 4 annual time zones, 5 time periods, and supports weekends and holidays. Each tariff has a separate meter to record electrical energy. Rate schemes can be switched by combination of day type and season type. [0005] Real-time measurement: measure current, voltage, frequency and power in real time, and calculate the load. When the load exceeds the set limit, the energy meter will give an alarm. [0006] Load record: record electric energy, active power, apparent power, voltage, current curve, time interval can be pr...

AI Technical Summary

Problems solved by technology

[0016] Due to the above-mentioned defects in the existing ordinary single-phase electric energy meter, it cannot meet the needs of two-way energy interaction in the smart grid

In addition, the existing ordinary single-phase electric energy meters generally do not have the function of remote meter reading. Even the electric energy meters with remote meter reading function still use wired transmission, and the wiring is troublesome.

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