Electric energy metering device and electric energy metering method

Abstract

The invention discloses an electric energy metering device. The electric energy metering device comprises a voltage sampling unit and a current sampling unit, wherein the output end of the voltage sampling unit and the output end of the current sampling unit are electrically connected with an electric energy detection unit, the electric energy detection unit is electrically connected with a microprocessor, and the voltage sampling unit and the current sampling unit are respectively connected in series in an alternating current power supply circuit. The invention also discloses an electric energy metering method. The electric energy metering method comprises the following steps: respectively inputting voltage and current sampling waveforms of electric equipment into the electric energy detection unit; after carrying out information processing by the electric energy detection unit, outputting voltage pulses, current pulses and power pulses to the microprocessor; and multiplying a pulse period detected by the microprocessor by a calibration coefficient to obtain a corrected pulse period, and calculating to obtain electricity consumption according to the relation between the correctedpulse period and voltage, current and power. According to the electric energy metering device and the electric energy metering method, the discreteness and temperature drift of the component parameters of the electric energy metering device can be automatically compensated, the selection requirement on components is reduced, a standard metering instrument is not required to be used for calibrationin the production process, and the accuracy and consistency of electric energy metering can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of electric energy metering, in particular to an electric energy metering device and an electric energy metering method. Background technique [0002] Smart meters, smart home sockets, and charging piles for new energy vehicles have gradually gained popularity and gained more and more applications. Smart meters and new energy vehicle charging piles involve metering and billing of energy consumption. Smart home users also hope that by installing energy-saving and environmentally friendly smart sockets, they can use electricity clearly and safely. Real-time detection is required, and accurate measurement is required. Many companies at home and abroad have developed chips that can measure electrical parameters such as voltage, current, and power of electrical equipment. There are also many companies that design and produce electric energy meters such as electric meters. There are discrete and temperature drif...

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Problems solved by technology

[0003] The object of the present invention is to provide an electric energy metering device and an electric energy metering method, which are used to solve the problem of energy consumption caused by electric energy metering instruments due to the discreteness and temperature drift of the parameters of metering chips, voltage and current sampling components in the prior art. The problem of inaccurate detection value

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