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Bus system for communication based on DC power supply line

A bus system, DC technology, applied in the distribution line transmission system, wired transmission system, transmission system and other directions, can solve the problems affecting circuit reliability, unstable operation, circuit stability of the post-stage circuit and poor electromagnetic compatibility, etc. Achieve the effect of ensuring circuit stability and electromagnetic compatibility

Active Publication Date: 2020-04-17
SPACETY CO LTD (CHANGSHA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Compared with the traditional DC carrier device, the noise of the carrier communication signal cannot be effectively eliminated, and the circuit stability and electromagnetic compatibility of the subsequent stage circuit are poor, which may even lead to unstable operation and affect the reliability of the circuit.

Method used

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  • Bus system for communication based on DC power supply line
  • Bus system for communication based on DC power supply line
  • Bus system for communication based on DC power supply line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment discloses a bus system based on a DC power supply line, and particularly relates to a bus system based on a DC carrier capable of filtering out some ripples in DC power, which can be used to couple a carrier communication signal to a DC power supply line way of signal transmission.

[0050] The bus system includes: a DC power supply line, a coupling module 100 , a separation module 200 , a DC power supply 700 , and an isolation unit 56 . The isolation unit 56 includes at least a first inductive reactance isolation module 600 and a first impedance transformation module 500 . Wherein, the coupling module 100 is electrically connected to the DC power supply line and is electrically connected to the output end of the carrier communication signal generation source 300 for coupling the carrier communication signal to the DC power supply line. The separation module 200 is electrically connected to the DC power supply line and is electrically connected to the i...

Embodiment 2

[0069] This embodiment discloses a DC carrier communication method based on a DC power supply line, and particularly relates to a communication method based on a DC carrier capable of filtering out some ripples in DC power, which can be used to couple the carrier communication signal to a DC power supply. Online signal transmission.

[0070] The method includes:

[0071] The coupling module 100 is electrically connected to the DC power supply line and is electrically connected to the output terminal of the carrier communication signal generation source 300 for coupling the carrier communication signal to the DC power supply line.

[0072] The separation module 200 is electrically connected to the DC power supply line and is electrically connected to the input end of the carrier communication signal receiving source 400, and is used for separating the carrier communication signal from the DC power supply line.

[0073] Wherein, the coupling module 100 and the separation module...

Embodiment 3

[0077] This embodiment discloses a communication system based on a DC carrier. The communication system includes a carrier communication signal generating source 300 , a carrier communication signal receiving source 400 , a DC power supply 700 , a coupling module 100 and a separating module 200 .

[0078]It includes: a carrier communication signal generating source 300 for generating a carrier communication signal; a carrier communication signal receiving source 400 for receiving a carrier communication signal; a DC power supply 700 for generating a DC signal; a coupling module 100 for transmitting a carrier communication signal The signal is coupled with the DC signal; and the separating module 200 is used for separating the carrier communication signal from the DC signal.

[0079] The carrier communication signal generation source 300 and the DC power supply 700 are connected in parallel to the coupling module 100, so that before the coupling module 100 couples the carrier c...

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PUM

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Abstract

The invention relates to a bus system based on a DC power supply line. The system at least comprises a coupling module and a separation module; the coupling module can transmit a carrier communicationsignal to the separation module by using a DC power supply device according to a differential power carrier mode; the coupling module is configured as follows: a carrier current of the DC power supply device is primarily isolated through a first inductive reactance isolation module and secondarily isolated through a first impedance conversion module. Therefore, under the condition that the firstinductive reactance isolation module cannot effectively isolate the noise of the carrier current with a higher current value; it is ensured that the first impedance conversion module can form band elimination on the carrier current and generate stable carrier current which is subjected to secondary isolation and has a high signal-to-noise ratio; the load information flow of the coupling module isdifferentiated through the carrier generation module and generates a carrier communication signal, and the carrier communication signal and the stable carrier current are coupled through the couplingmodule and generate a carrier current with a high signal-to-noise ratio and a carrier communication signal.

Description

technical field [0001] The invention relates to the technical field of carrier communication, in particular to a bus system for communication based on a DC power supply line. Background technique [0002] Power carrier is a unique communication method of power system. Power carrier communication refers to the technology of high-speed transmission of analog or digital signals through the carrier mode by using the existing power line. The biggest feature is that there is no need to re-establish the network, as long as there are wires, data transmission can be carried out. [0003] Power line carrier communication (power line carrier communication) is a power system communication that uses transmission lines as the transmission medium of carrier communication signals. Since the transmission line has a very strong support structure and more than three conductors (generally three-phase good conductors and one or two overhead ground wires), the transmission line transmits the pow...

Claims

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Application Information

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IPC IPC(8): H04B3/56H04B3/54
CPCH04B3/56H04B3/548
Inventor 刘义杨峰任维佳向晓霞
Owner SPACETY CO LTD (CHANGSHA)
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