Carrier communication multi-service access platform system and method

Abstract

The invention provides a carrier communication multi-service access platform system. The carrier communication multi-service access platform system comprises at least one piece of carrier communication equipment which serves as a node to form a communication network, wherein an orthogonal frequency division multiplexing (OFDM) technology with differential binary phase shift keying (DBPSK), differential quadrature phase shift keying (DQPSK) and differential 8-ary phase shift keying (D8PSK) modulation and forward error correction, a self-adaptive carrier frequency selection technology and a programmable trapped wave mechanism are adopted among the nodes; cross transformer data transmission is performed through a medium / low voltage distribution wire; and the at least one piece of carrier communication equipment is communicated with external network equipment and / or a server through a data interface. The invention also provides a carrier communication multi-service access method. The invention can be applied to data transmission of power wires of power distribution networks with medium voltage of 10 to 35 KV and low voltage of 380 to 220 V, has multiple bus modes, is convenient with the external network equipment or server conveniently and can adopt a network structure with a master and multiple slavers. The main node has a network management function, can realize full-carrier network node management and is flexible in networking mode.

Description

technical field [0001] The present invention relates to data processing technology, more specifically, relates to a carrier communication multi-service access platform system and method. Background technique [0002] The common power line data transmission technology in the prior art generally adopts the frequency shift keying debugging method (abbreviated as FSK in English), which can realize data transmission on medium and low voltage distribution lines with strong noise interference, and can meet the requirements of power monitoring equipment through power lines. data communication needs. Its digital signal interface adopts RS-232 or RS-485 interface, which can be interconnected with existing distribution automation terminals RTU, FTU, TTU, DTU and load control devices, and is applied to distribution automation, power collection and monitoring of small and medium hydropower stations, Data communication for systems such as remote meter reading, distribution transformer mo...

AI Technical Summary

Problems solved by technology

Due to the FSK debugging method, its transmission rate is up to 7.5k, which cannot span multi-level branch boxes, and the stability is not high

In the prior art, there are also some power line data transmission technologies that adopt orthogonal frequency division multiplexing (OFDM in English), and there are problems with the coupling of the coupler, which leads to excessive signal attenuation and cannot transmit data across transformers.

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