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Method and system for reading data of electricity meter based on PROFIBUS

A smart meter and data technology, used in electrical signal transmission systems, signal transmission systems, instruments, etc., can solve the problems of unfavorable data reading and low speed, and achieve rich data content, simple configuration, and fast reading speed. Effect

Inactive Publication Date: 2012-10-10
HUNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the electric meter mainly uses the MODBUS protocol and the 645 protocol to communicate, and the general communication rate is up to 38400bps, which is not high, which is not conducive to the copying of large amounts of data.

Method used

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  • Method and system for reading data of electricity meter based on PROFIBUS
  • Method and system for reading data of electricity meter based on PROFIBUS
  • Method and system for reading data of electricity meter based on PROFIBUS

Examples

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Embodiment 1

[0038] Such as figure 1 As shown, CP5611 / PLC acts as the PROFIBUS master station of the system, and the electric meter embedded with the PROFIBUS module acts as the PROFIBUS slave station. The master station and the slave station communicate in a master-slave manner. A master station can have 126 slave stations. figure 1 The input and output are relative to the PROFIBUS master station. The PROFIBUS master station sends a data request command to the PROFIBUS slave station as the output data of the PROFIBUS master station; after receiving the data request command, the PROFIBUS slave station parses the command content, according to the command content , Obtain the parameters of the electric meter from the electric meter, use it as PROFIBUS input data, and transmit it to the master station. The PROFIBUS master station and the PROFIBUS module in the three-phase smart meter are connected by DP bus.

[0039] Such as figure 2 , PROFIBUS slave station adopts high-precision sampling...

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Abstract

The invention discloses a method and a system for reading data of an electricity meter based on a PROFIBUS. The system comprises a master station and a slave station which are communicated with each other on the basis of PROFIBUS, the master station and the slave station are in communication connection on the basis of a PROFIBUS bus, the slave station comprises the intelligent electricity meter and a PROFIBUS module, and the PROFIBUS module is in communication connection with a microprocessor unit [MCU (microprocessor control unit)] in the intelligent electricity meter. The method and the system for reading the data of the electricity meter based on the PROFIBUS have the advantages of easiness in implementation and quick data transmission.

Description

technical field [0001] The invention relates to a PROFIBUS-based smart meter data reading method and system. Background technique [0002] PROFIBUS originated in Europe and has been rapidly developed in China. The technology has matured and has been widely used in various fields. With the wide application of PROFIBUS in China and the openness of technology, the use of PROFIBUS communication for instruments is increasingly demanded by the market. Market research confirms that PROFIBUS accounts for more than 40% of the open industrial fieldbus system market in Germany and Europe. By the end of 2008, more than 28 million device nodes were installed. In 2006, PROFIBUS became China's first national standard for fieldbus technology in the field of industrial communication: GB / T 20540-2006, and is currently the only approved national standard for fieldbus. But now the domestic instrument industry has fewer applications in this area, and there is considerable room for development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C19/00
Inventor 朱青曹时伟曹一家黄小庆何杰李友光张杰罗杰曹敏罗学礼张林山张志生
Owner HUNAN UNIV
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