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Power line carrier relay method based on phase conversion

A technology of power carrier and phase conversion, applied in phase modulation carrier system, distribution line transmission system, etc., can solve the problems of depletion of signal strength, collision loss, etc., achieve the effect of realizing transmission, extending transmission distance, and high application prospects

Inactive Publication Date: 2013-03-27
ZHEJIANG NEW ZAILING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing signal relay method in the power line simply follows the relay method in network signal transmission. Due to the defect of broadband sharing of the power line carrier circuit, the relay signal will share the line bandwidth with the signal sent by the transmitter. The mutual crosstalk between the carrier signals will cause very serious collision loss and greatly reduce the signal strength

Method used

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  • Power line carrier relay method based on phase conversion
  • Power line carrier relay method based on phase conversion
  • Power line carrier relay method based on phase conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The power carrier relay method based on phase conversion, the communication network connection structure of the power carrier relay equipment is as follows figure 2 As shown, it includes a signal transmitting end, a receiving end, and a relay module between the transmitting end and the receiving end. The relay module is a power line modem conforming to the HomePlugAV standard, and specifically includes the following steps:

[0023] A1: Place the relay module between the first line and the second line, the first line and the second line are located between the signal transmitting end and the receiving end and transmit alternating currents of the same or different phases, wherein the first line Connect to the transmitter, and the second line to connect to the receiver;

[0024] A2: Use the relay module to demodulate the power carrier signal in the first line;

[0025] A3: The demodulated signal is modulated into the power carrier signal in the second line through the re...

Embodiment 2

[0027] The relay method described in Embodiment 1 is only applicable to two power lines that transmit alternating current of the same or different phases, while the existing power lines for power transmission mostly use three-phase power. The present invention can also realize relay transmission in multi-phase alternating current.

[0028] The power carrier relay method based on phase conversion, the communication network connection structure of the power carrier relay equipment is as follows image 3 As shown, it includes a signal transmitting end, a receiving end, and a relay module between the transmitting end and the receiving end. The relay module is a power line modem conforming to the HomePlugAV standard, and specifically includes the following steps:

[0029] B1: N lines and N-1 relay modules are set between the transmitting end and the receiving end, and the N lines respectively transmit alternating currents of the same or different phases, the first line is connected...

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Abstract

The invention relates to a power line carrier communication technology and discloses a power line carrier relay method based on phase conversion. A power line carrier relay comprises a signal transmitting end, a receiving end and a relay module located between the transmitting end and the receiving end. The relay module is a power line modem conforming to a HomePlugAV standard. The power line carrier relay method comprises a step A1 of placing the relay module between a first line and a second line, enabling the first line and the second line to be located between the signal transmitting end and the receiving end and transmit alternating current of the same phase or different phases, enabling the first line to be connected with the transmitting end, and enabling the second line to be connected with the receiving end; a step A2 of using the relay module to demodulate power line carrier signals in the first line; and a step A3 of enabling the demodulated signals to be modulated into power line carrier signals in the second line. The power line carrier relay method has the advantages that remote undamped transmission of the carrier signals can be achieved, and collision loss caused by the fact that the power line carrier signals share line bandwidth is avoided.

Description

technical field [0001] The invention relates to power carrier communication technology, in particular to a phase conversion-based power carrier relay method. Background technique [0002] Power carrier communication is PLC, which is the abbreviation of English Power line Communication. Power carrier is a unique communication method of power system, which refers to the technology of high-speed transmission of analog or digital signals by means of carrier wave using existing power lines. The biggest feature of power carrier technology is that there is no need to re-establish the network, as long as there are wires, data transmission can be carried out. At present, power carrier has been widely used as network transmission in the last mile. However, as a developing field, the existing technology has not yet solved the consumption of power carrier signals. Therefore, power carrier technology is often limited to the transmission application of the last few hundred meters, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/58H04L27/18
Inventor 唐旭
Owner ZHEJIANG NEW ZAILING TECH CO LTD