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Multi-frequency flooding power line carrier communication method

A technology of power line carrier and communication method, which is applied in the direction of distribution line transmission system, electrical components, and transmission paths, etc., which can solve the problems of difficult network site communication, different optimal operating frequencies of links, etc., and achieve increased access Access probability, improved network coverage, and high reliability effects

Active Publication Date: 2014-11-12
STATE GRID CORP OF CHINA +3
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AI Technical Summary

Problems solved by technology

In the actual power line carrier communication network, the optimal operating frequency of different links is different, it is difficult to find a frequency to complete the communication between most network sites

Method used

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  • Multi-frequency flooding power line carrier communication method
  • Multi-frequency flooding power line carrier communication method
  • Multi-frequency flooding power line carrier communication method

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with accompanying drawing.

[0055] The invention provides a multi-frequency flooding power line carrier communication (PLC, Power Line Carrier Communication) method, which is based on frequency recognition and flooding technology. The method of the present invention can be applied to star and tree network topologies.

[0056] The method of the present invention is based on the frequency cognition technology, and the master station realizes the cognition of the network topology environment and the communication operating frequency. The slave station / link finds a communicable working frequency, adapts to the harsh communication environment of PLC, improves the access probability of the slave station, and meets the communication delay and reliability requirements. The master station realizes frequency recognition, and the slave station does not need to have any learning, storage and computing capabiliti...

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Abstract

The invention provides a multi-frequency flooding power line carrier communication method. The method comprises the following steps that a power line carrier communication system is initialized, a main station cognizes the work frequency of slave stations, and the main station is communicated with the slave stations through multiple frequencies of data. According to the method achieved based on the frequency cognition and flooding technology, different frequencies are selected according to conditions of different slave conditions / chains, the method adapts to the characteristics of a power line carrier network channel, the access probability of the slave stations is increased, and the network coverage range is improved.

Description

technical field [0001] The invention relates to a method in the field of medium and low voltage power communication, in particular to a multi-frequency flooding power line carrier communication method. Background technique [0002] The power line carrier communication network has the advantage of no need for wiring, which can greatly reduce the cost of network construction. However, the attenuation of the power line carrier channel is affected by factors such as line length, network branch structure and impedance matching, and has the characteristics of large attenuation, large variation with place, and frequency selective fading. In addition, the noise experienced by the slave station in the power line carrier communication network is colored noise, including not only the noise generated by household appliances connected to the power line, but also the noise loaded by the space radio signal onto the power line, which has the characteristics of large noise, changing anytime ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L5/00
CPCH04B3/54
Inventor 刘伟麟安春燕歌德·布米勒李建岐陆阳赵涛赵勇陶峰高鸿坚杨冰褚广斌
Owner STATE GRID CORP OF CHINA
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