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Power line communication system based on constant current source

A power line communication, constant current technology, applied in the application of power line communication, distribution line transmission system, power network operating system integration and other directions, can solve problems such as signal attenuation, and achieve the effect of reducing communication performance

Inactive Publication Date: 2011-08-24
LSIS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0016] The present invention intends to solve the above-mentioned problems, and an object of the present invention is to provide a power line communication system, such as an airport lighting system, which can solve problems caused by voltage-type power line communication by performing current-type communication in a power-line communication environment using a constant current. Signal attenuation caused by the resulting voltage divider

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  • Power line communication system based on constant current source
  • Power line communication system based on constant current source
  • Power line communication system based on constant current source

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Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0034] refer to figure 2 a, A power line communication system based on a constant current forms a closed loop through a power line 11 through which a constant current flows, wherein the power line 11 is connected in series with a plurality of isolation transformers 13-1~13-k.

[0035] Each of the individual devices 20-1~20-k is connected to the power line 11 via an isolation transformer 13-1~13-k to operate with a constant current flowing on the power line 11 and a power line communication signal.

[0036] Since the functions performed by each independent device 20-1~20-k can be configured differently according to needs, there is no need to implement a single function. That is, each independent device 20-1 ~ 20-k includes such as figure 2 The constituent elements in b, but each independent device can perform an independent function. ...

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Abstract

Disclosed herein is a power line communication system in which multiple loads are connected in series to constant current source, especially a power line communication system based on constant current source, each individual equipment connected through an insulation transformer to a power line forming a closed loop has a current / voltage conversion part and a voltage / current conversion part, wherein a voltage signal towards the power line is converted and transmitted to a current signal, and a current signal received from the power line is converted and inputted to a voltage signal, and a communication performance lowered problem observable when using a voltage-type can be solved by performing a current-type power line communication and particularly, applied to an airfield lighting system in which multiple lamps are serially connected to a constant current-flowing single closed-loop, thereby performing a power line communication more stably for control of an airfield lighting lamp.

Description

technical field [0001] The present invention relates to a power line communication system based on constant current, and in particular to using constant current to solve communication signal attenuation caused by voltage division in a system that needs to drive multiple loads connected in series, such as an airport (approach) lighting system that controls lamps disadvantages, thereby performing power line communication stably. Background technique [0002] Due to the advantage of using existing power lines without additional installation of communication lines, power line communication is considered a suitable solution for airport lighting systems, home network systems, remote monitoring systems, and factory automation systems that need to control and monitor multiple lights. communication method. [0003] However, the related art power line communication using a voltage signal may involve attenuation of communication signals depending on the number of loads connected in se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54
CPCY02B70/3283Y02B90/2623Y04S40/122H04B2203/5425Y04S20/246H04B2203/5458H02J13/0024H05B37/0263H05B47/185H02J13/00009Y02B90/20Y04S40/121Y02B70/30
Inventor 刘永奎
Owner LSIS CO LTD