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High bandwidth signal transmission device based on direct current carrier waves

A signal transmission and DC carrier technology, applied in the distribution line transmission system and other directions, can solve the problems of high cost, complicated maintenance and space occupation, and achieve the effects of low cost, simple networking and convenient maintenance.

Active Publication Date: 2014-05-21
ZHEJIANG NEW ZAILING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of such a networking system is that the space is occupied by various "wires" such as network cables, power supply adapters, and relays, which are costly and complicated to maintain later.

Method used

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  • High bandwidth signal transmission device based on direct current carrier waves
  • High bandwidth signal transmission device based on direct current carrier waves
  • High bandwidth signal transmission device based on direct current carrier waves

Examples

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 A high-bandwidth signal transmission device based on a DC carrier is shown, including a local-end interference suppressor, a local-end modem, a terminal interference suppressor, and a terminal modem; the DC power supply line supplies power to the local-end modem after passing through the local-end interference suppressor, so The central modem couples the network signal to the DC power supply line, and the DC power supply line supplies DC power to the external equipment and the terminal modem after passing through the terminal interference suppressor; the terminal modem extracts the loading signal transmitted by the DC power supply line through coupling. Send the signal to the signal input terminal of the external device through modulation and demodulation. The central office modem includes a central office modulation an...

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Abstract

The invention discloses a high bandwidth signal transmission device based on direct current carrier waves. The device comprises a local side interference suppressor, a local side modem, a terminal interference suppressor and a terminal modem; a direct current power supply line passes through the local side interference suppressor to supply power for the local side modem, the local side modem loads a network signal onto the direct current power supply line in a coupling mode, and the direct current power supply line passes through the terminal interference suppressor to supply direct current power for an external device and the terminal modem; the terminal modem extracts a loading signal transmitted by the direct current power supply line through coupling, and then the signal is sent to a signal input end of the external device through modulation-demodulation. The high bandwidth signal transmission device based on the direct current carrier waves has the advantages that the networking is simple; connection of a whole system can be achieved only by addition of local side and terminal devices in the system through direct current power line carrier waves; costs are low, and the maintenance is convenient; the transmission distance is long, and the critical distance can reach 400 meters in laboratory environment; the transmission frequency range is wider than that of a common programmable logic controller (PLC) system, and the frequency range can reach 2-68MHz.

Description

technical field [0001] The invention relates to the field of PLC direct current carrier communication, in particular to a high-bandwidth signal transmission device based on direct current carrier. Background technique [0002] Most of the system networking of existing IP series devices is like this: each IP device needs to be connected by a network cable, and also has its own independent power supply. For long-distance IP device networking, sometimes additional middle (The signal transmission quality of ordinary network cable is limited by the length of the network cable, generally around 100 meters). The disadvantage of such a networking system is that the space is occupied by various "wires" such as network cables, power adapters, and relays, which are costly and complicated to maintain later. [0003] Power carrier wave (PLC) is a convenient and fast communication transmission method that uses power lines for transmission. Especially in the case where the line transforma...

Claims

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Application Information

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IPC IPC(8): H04B3/54
Inventor 靳旭哲陈钢郭晶唐晓东石广楠薛居征
Owner ZHEJIANG NEW ZAILING TECH CO LTD
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