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Electric energy meter metering core scheme design meeting IR46 requirements

A technology of electric energy meter and modular design, which is applied in the direction of measuring electric variables, measuring devices, instruments, etc., and can solve problems such as software upgrades are not allowed

Inactive Publication Date: 2021-01-15
QINGDAO TOPSCOMM COMM
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  • Abstract
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AI Technical Summary

Problems solved by technology

The energy meter required by my country's current energy meter standard system is an integrated design. After the energy meter is hung on the site, the software is not allowed to be upgraded. When the demand changes or the energy meter fails, only the entire meter can be replaced.

Method used

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  • Electric energy meter metering core scheme design meeting IR46 requirements

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Embodiment Construction

[0006] refer to figure 1 , the main MCU of the metering core uses the ARM chip with the CK802 core and has 4 SPI interfaces. Among them, 4-way UART interfaces are used for security authentication module, internal storage module, expansion module and management core communication interface; 5-way independent ADC is used for temperature measurement of 4 terminal blocks and clock temperature compensation circuit; 4-way UART is used for It is used for metering communication and interface output, and one channel is reserved for subsequent function expansion.

[0007] Standardized interface definitions are adopted between the metering core, the management core and the expansion module, and an electrostatic protection circuit is added between the interfaces, which can meet the electrostatic protection requirements while ensuring the communication rate, and supports hot swapping.

[0008] The main power supply of the metering core uses a high-efficiency switching power supply, which ...

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Abstract

The invention provides an electric energy meter metering core design scheme meeting IR46 standard requirements. According to the scheme design, modular design is adopted, standard interfaces of a management core and an uplink communication module are provided, and the system comprises a power supply circuit, an MCU control circuit, a metering circuit, a data storage circuit, a safety certificationcircuit, an error self-detection circuit and a terminal base temperature measurement circuit; legal data such as electric quantity and clock can be provided, and tasks such as event recording and error online monitoring can be carried out.

Description

technical field [0001] The invention relates to the field of smart electric energy meters, and provides a design scheme for electric energy meter measuring cores meeting the requirements of IR46, including a power supply circuit, an MCU control circuit, a metering circuit, a data storage circuit, a safety authentication circuit, an error self-detection circuit, and a terminal base temperature measurement The circuit is specially designed for the International Recommendation 46 "Active Energy Meter" standard newly formulated by the International Organization of Legal Metrology. Background technique [0002] The International Recommendation 46 "Active Energy Meter" formulated by the International Organization for Legal Metrology was released in October 2012. As a member state, China must adopt and implement this standard. The energy meter required by my country's current energy meter standard system is an integrated design. After the energy meter is hung on the site, the soft...

Claims

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Application Information

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IPC IPC(8): G01R22/10G01R22/06
CPCG01R22/10G01R22/068
Inventor 刁瑞朋刘承志
Owner QINGDAO TOPSCOMM COMM
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