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An electric network bridge

A power network bridge and power line technology, applied in the field of power network bridges, can solve problems such as poor signal transmission effect, achieve good signal transmission effect, and simple circuit adjustment

Inactive Publication Date: 2008-07-09
珠海天瑞电力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power network bridge with a better signal transmission effect in view of the above-mentioned defect of the prior art that the signal transmission effect is poor in harsh environments

Method used

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  • An electric network bridge
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Embodiment Construction

[0020] As shown in Figure 1, in an embodiment of the power network bridge of the present invention, the circuit power network bridge includes a communication unit 11 and a coupling unit 12, and the coupling unit 12 is connected to the power line 13, and one end of the communication unit 11 is connected to the network, and the other One end is connected to the coupling unit 12, the communication unit 11 is used to convert the signal between the network and the form accepted by the coupling unit 12, and the coupling unit 12 is used to transmit signals between the communication unit 11 and the power line 13; wherein, the communication unit 11 includes Ethernet The network module 111 and the OFDM module 112, the Ethernet module 111 and the OFDM module 112 are connected through the MII interface, and the OFDM module 112 also includes a sending interface and a receiving interface. The interfaces are respectively connected to the coupling unit 12; and the coupling unit 12 includes a t...

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Abstract

The invention relates to an electricity network bridge and comprises a communication unit and a coupling unit, wherein one end of the communication unit is connected with a network, while the other end is connected with the coupling unit which is connected with an electricity wire; the communication unit is used for converting signals between the forms accepted by the network and the coupling unit, and the coupling unit is used for transmitting signals between the communication unit and the electricity wire, and a signal receiving channel and a signal sending channel of the coupling unit are independent with each other. The electricity network bridge of the invention has the following advantages: as the OFDM technique is adopted and the receiving and sending channels of the coupling unit are independent with each other, the invention has simple circuit adjustment and better effect of signal transmission.

Description

technical field [0001] The invention relates to a device for network communication by using a power line, and more specifically relates to a power network bridge. Background technique [0002] Power line carrier communication is widely used at present, but its scope of use is often restricted due to the characteristics of the power line itself. Power lines are different from ordinary lines, and their channels are not constant and uncontrollable in the time domain. Therefore, it is necessary to adopt effective technical means of anti-interference, anti-impedance mismatch, and anti-multipath fading, and to solve the problem of signal conflict, so that it is possible to use power lines as the transmission medium to achieve high-speed data communication. A variety of power line carrier communication schemes have appeared, including analog modulation, digital modulation, spread spectrum communication and other schemes. The signal spectrum used by analog modulation and digital m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54
Inventor 王国度孟绍良
Owner 珠海天瑞电力科技有限公司
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