A power carrier modem

A modem and power carrier technology, applied in modulation carrier systems, electrical components, distribution line transmission systems, etc., can solve problems such as uncontrollable and inconstant channel time domain, and achieve the effect of low cost and convenient installation.

Inactive Publication Date: 2007-10-24
慈溪市双立电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the power line is different from ordinary communication lines, and its channel is not constant and uncontrollable in the time domain.

Method used

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  • A power carrier modem

Examples

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Embodiment Construction

[0016] The system composition in Figure 1 is mainly composed of Ethernet controller 1, INT51x1 communication main chip 2, and coupler 3 parts.

[0017] INT51x1 is a chip of INTELLON company. It is an ideal modulation / demodulation chip based on PLC broadband access. It includes: MAC / PHY integrated transceiver 4 communicating with Ethernet controller 1, and MAC / PHY integrated transceiver 4 connected analog front-end module 5 , and the analog front-end module 5 is connected to the coupler 3 .

[0018] 1. Analog front-end module (AFE Module) 5: includes a sending amplifier and a receiving amplifier. The sending and receiving branches are respectively connected in series with an LC band-pass filter with a passband of 4-21 MHz.

[0019] 2. MAC / PHY integrated transceiver 4: including I / O interface module 6, MAC / PHY module 7 communicating with Ethernet controller 1 through I / O interface 6, ADC / DAC conversion connected with MAC / PHY module 7 Module 8; wherein, the I / O interface module ...

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Abstract

The related electrical modem comprises: connected in turns, an Ethernet controller connecting with outer WAN and terminal through PCI bridge, a MAC/PHY transceiver based on INT51X1 chip for communication and signal processing, an analog front-end module for amplifying signal, and a coupler taking impedance match for I/O signal; all module interfaces are full-duplex type, wherein the coupler couples communication signal with power wire, or couples power line signal, and uses the power line as medium for connecting the LAN and WAN.

Description

technical field [0001] The invention relates to a modem, in particular to a power carrier modem using a power transmission line as a signal transmission medium. Background technique [0002] Power line carrier communication is a communication method that uses power transmission lines as signal transmission. Due to the characteristics of high mechanical strength, safety and reliability, low investment, and little impact on climate and environment, power line carrier communication has always been one of the important methods of power system communication in my country and around the world. [0003] However, power lines are different from ordinary communication 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 transmiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L27/00
Inventor 宓孟立
Owner 慈溪市双立电子有限公司
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