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Three-phase electric energy meter based on NIOS II microprocessor

A three-phase electric energy meter and microprocessor technology, which is applied in the direction of instruments, measuring electric variables, and electric signal transmission systems, can solve problems such as product safety and reliability, and achieve reconfigurability, high integration, and reduced The effect of signaling

Inactive Publication Date: 2008-09-03
CAPITAL NORMAL UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

Among them, changes to the hardware design scheme may have a great impact on the safety and reliability of the product, and at the same time bring more investment and inconvenience to the design and manufacturer

Method used

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  • Three-phase electric energy meter based on NIOS II microprocessor
  • Three-phase electric energy meter based on NIOS II microprocessor

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Embodiment Construction

[0023] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

[0024] The invention provides a three-phase electric energy meter based on NIOS II microprocessor, and proposes a complete design scheme for three-phase electric energy measurement. This design scheme can also be applied to the SOPC chip design of the single-phase electric energy meter, only need to modify the corresponding measurement algorithm and adjust the corresponding modules in the system software.

[0025] 1. the present invention adopts the reason of NIOS II soft-core microprocessor

[0026] The main features of the NIOS II soft-core microprocessor released by Altera include: an efficient and flexible processor module, which can be configured as a 16-bit or 32-bit central processing unit (RISC, Relegate Important Stuff to the Compiler structure) by software, and Different internal memory sizes can be selected, and i...

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Abstract

The invention provides a three-phase electric energy gauge based on NIOS II microprocessor, comprising: sensor, output terminal connected with signal conditioning module; signal conditioning module, input terminal connected with output terminal; signal collecting module, input terminal connected with input terminal of signal conditioning module; electric energy measuring SOPC chip connected with the signal collecting module, being the core of the whole electric energy gauge; phase-lock multiple frequency connected with the signal conditioning module and signal collecting module; general asynchronism transceiver for realizing the communication of electric energy gauge and host computer or meter reading system using RS-232 interface mode; LCD display / keyboard module for connecting the electric energy measuring SOPC chip; calendar clock module connected with the electric energy measuring SOPC chip; IIC memorizer connected with the electric energy measuring SOPC chip. The bulk of electric energy gauge is small and the integration lever is high, and the reliability is high, with reconfigurability.

Description

(1) Technical field: [0001] The invention relates to a three-phase electric energy meter based on a NIOS II microprocessor, which belongs to the technical field of instruments and meters. (two) background technology: [0002] After the transformation of urban and rural power grids in 2003, the demand for three-phase multi-function meters in the power system increased rapidly. As a result, international and domestic electric meter companies are optimistic about business opportunities, pay close attention to the development of new technologies, and continuously introduce new products of three-phase multi-function meters to meet the application needs of the electric energy meter market. According to incomplete statistics, the State Grid and China Southern Power Grid have a total of 195 million billing electric energy meters. Among them, the two networks directly manage 118 million units for billing, and indirectly manage 77 million units for billing. [0003] In recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R22/10G01R21/133G01R21/06G08C19/16
Inventor 袁慧梅关永
Owner CAPITAL NORMAL UNIVERSITY
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