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The Method of Reducing Radiation Interference of Power Line Carrier Communication

A power line carrier and radiation interference technology, applied in distribution line transmission systems, electrical components, transmitter monitoring and other directions, can solve the problem of unavoidable short-wave frequency bands, and achieve the effect of reducing external radiation interference and reducing transmission power

Active Publication Date: 2021-06-29
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the intensive use of short-wave frequency bands in military and civilian radio, this method is difficult to avoid for short-wave frequency bands.

Method used

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  • The Method of Reducing Radiation Interference of Power Line Carrier Communication
  • The Method of Reducing Radiation Interference of Power Line Carrier Communication
  • The Method of Reducing Radiation Interference of Power Line Carrier Communication

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Embodiment Construction

[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0023] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0024] In the communication process of the PLC system, due to the factors of line attenuation, a constant transmission power is generally used to ensure that the receiving end with the largest attenuation can receive the signal normally, but at a large number of receiving ends with small attenuation, the signal amplitude is seriously excessive.

[0025] Based on the above idea, the present invention provides a method for re...

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Abstract

The invention discloses a method for reducing radiation interference of power line carrier communication. It includes: all communication nodes communicate according to their own maximum transmission power, and establish an initial communication network topology; the central node uses the collected signal-to-noise ratio statistical information, the initial transmission power of each communication node, and the initial communication network topology. The network topology establishes an initial routing table and distributes it; each communication node broadcasts a transmission power negotiation frame to all its next-hop nodes, and the next-hop node performs signal-to-noise ratio measurement on the received signal after receiving the power negotiation frame, and Returning the signal-to-noise ratio measurement result to the sending node; the sending node adjusts its own transmission power according to the received signal-to-noise ratio measurement result, and communicates according to the adjusted transmission power. The method for reducing the radiation interference of the power line carrier communication can greatly reduce the radiation interference of the power line carrier communication at low cost, and the method can be applied in both indoor and outdoor environments.

Description

technical field [0001] The invention relates to the field of power line carrier communication, in particular to a method for reducing radiation interference of power line carrier communication. Background technique [0002] Low-voltage power line broadband carrier communication (PLC) is a special communication method that uses low-voltage power distribution lines as an information transmission medium for voice or data transmission. [0003] The frequency bands of existing power line carrier communication systems include low-speed narrowband (30kHz-500kHz) and high-speed (1MHz-30MHz) communication. The transmission power frequency band of low-voltage power line carrier is limited to below 1MHz. The power line high-speed carrier is affected by the external power network with low transmission power. The basic frequency band of low-speed narrowband communication is below 1MHz, which is easy to generate electromagnetic emission power. [0004] The mechanism of electromagnetic t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/54H04B17/10H04B17/336H04L12/741H04L12/751H04L45/02H04L45/74
CPCH04B3/54H04B17/102H04B17/336H04L45/02H04L45/54
Inventor 宋彦斌王贤辉王立城甄岩王东山赵冲
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY