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A dual-core electric energy meter and its power supply control method

A technology of electric energy meter and power supply, applied in the field of electric energy meter, can solve the problem that the independent power supply requirement of dual-core electric energy meter cannot be met, etc.

Active Publication Date: 2020-06-12
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing power control circuit cannot meet the independent power supply requirements of the dual-core electric energy meter

Method used

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  • A dual-core electric energy meter and its power supply control method

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Embodiment Construction

[0039] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, but these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the teachings of the invention to those skilled in the art. scope. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals. Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or overly formal...

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Abstract

The invention relates to a dual-core electric energy meter and a power supply control method therefor. The dual-core electric energy meter comprises a metering core, a management core and a power supply management control module, wherein the metering core is used for realizing an electric energy metering function; the management core is used for realizing a non-electric-energy metering management function; the power supply management control module is used for realizing independent power supply for the metering core and the management core, wherein the power supply management control module consists of a main power supply, a clock battery and a power-off meter-reading battery; according to the control method, when the main power supply is powered on, all power supplies are supplied by the main power supply, and the metering core is powered by an independent power supply branch; when the main power supply is in power outage, a real-time clock RTC of the metering core is powered by the clock battery, and the management core is powered by the power-off meter-reading battery; and when the clock battery is replaced, the real-time clock RTC in the metering core is temporarily powered by a supercapacitor.

Description

technical field [0001] The invention relates to the field of electric energy meters, in particular to a double-core electric energy meter and a power supply control method thereof. Background technique [0002] With the diversification of customer needs, the dual-core energy meter based on the IR46 standard will become the development direction of China's energy meters in the future. The dual-core watt-hour meter requires that the metering core (the functional module that realizes the measurement and statistics of electric energy in the watt-hour meter) and the management core (the functional module that realizes data transmission and storage in the watt-hour meter) be separated, that is, the metering core and the management core are separated, and the metering part Can work independently. However, at present, the electric energy meter in our country is designed in one piece, that is, the metering part and the non-metering part do not require independent work. The power su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06G01R11/02
CPCG01R11/02H02J9/061H02J9/068
Inventor 王晓东段晓萌王爽郜波姜洪浪罗冉冉崔星毅陈康杰
Owner CHINA ELECTRIC POWER RES INST
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