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Impedance self-adaptive matching method and device for long-distance communication line

An adaptive matching and communication line technology, which is applied in the direction of line transmission parts, gearbox control/balance, etc., can solve the problems such as the difficulty of manual impedance adjustment, and achieve the effect of eliminating operational complexity, improving communication quality, and improving debugging

Active Publication Date: 2019-10-15
GREE ELECTRIC APPLIANCES INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem that manual adjustment of impedance is difficult in the prior art, the present invention proposes an impedance adaptive matching method and device for long-distance communication lines

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  • Impedance self-adaptive matching method and device for long-distance communication line
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  • Impedance self-adaptive matching method and device for long-distance communication line

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Embodiment Construction

[0026] The principles and embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] like figure 1 , figure 2 As shown, the impedance adaptive matching device of the communication line of the present invention is connected in parallel with the communication line between two communication devices. The communication lines referred to in the present invention are all differential communication lines, such as buses, network cables, etc., differential The communication line usually has at least two signal lines, that is, the impedance adaptive matching device is respectively connected to the two signal lines in parallel to obtain the voltage signal of the communication line. Specifically, the device specifically includes an adjustment unit, a detection unit and a control unit. figure 2 What is shown is a specific embodiment of the device, wherein the adjusting unit adopts a digitally controlled potentiometer, a...

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Abstract

The invention discloses an impedance self-adaptive matching method and device for a long-distance communication line. The impedance self-adaptive matching method of the communication line comprises the following steps: endowing two ends of the communication line with an initial resistance value; detecting signal change data of the communication line, and comparing the signal change data with preset data; and adjusting the resistance value of the communication line according to a comparison result until the signal change data is consistent with qualified data in preset data. According to the invention, the matching impedance of the communication line can be automatically adjusted, the debugging process is simplified, and the debugging efficiency is improved.

Description

technical field [0001] The invention relates to an impedance self-adaptive matching method and device for communication lines. Background technique [0002] With the rapid development of electrical equipment, there are more and more communications between electrical equipment, and the distance is getting longer and longer. The extension of the communication distance will easily cause the signal distortion of the communication line to be seriously distorted, and the quality of communication will decline. In order to ensure the quality of communication, it is necessary to adjust the two The matching resistance of the terminal reduces signal distortion. [0003] At present, the on-site installation personnel generally adjust the matching resistance value manually to debug the signal quality, but due to the complex environment of the project site, it is impossible to calculate the best matching resistance value through an effective mathematical model, and the manual adjustment o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/04
CPCH04B3/04
Inventor 莫飞凡牟桂贤申伟刚
Owner GREE ELECTRIC APPLIANCES INC