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DC line carrier communication device

A carrier communicator and modulator technology, applied in the distribution line transmission system and other directions, can solve the problems of weak anti-interference ability of data transmission, affecting the quality of DC power supply, poor confidentiality, etc., to ensure the quality of power supply, simple structure and low cost Effect

Inactive Publication Date: 2009-02-04
蒋富强
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] However, the disadvantages of the existing DC bus communication technology are: the baseband signal of the communication has not been modulated, and the total DC power supply has a high internal resistance, which can only provide a small direct current of tens of milliamperes at most to the load equipment, and control the DC Data transmission in the "0 level" time slot on the line also affects the quality of DC power supply, and the anti-interference ability of data transmission is weak and the confidentiality is poor

Method used

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 Shown: a DC line carrier communicator, composed of a transmitting unit and a receiving unit,

[0039]Wherein the transmitting unit is provided with a modulator 3, the first input of the modulator 3 receives the carrier signal sent by the carrier generator 1, and the second input of the modulator 3 is connected to the output of the data buffer 2, so The output terminal of the modulator 3 outputs the modulation signal to the push-pull driver 4, and the output terminal of the push-pull driver 4 outputs the amplified modulation signal to the low-pass filter 5, and the output terminal of the low-pass filter 5 outputs data to the direct current DC on-line;

[0040] Wherein the receiving unit is provided with a limiter 6, the input end of the limiter 6 receives the data on the DC line, and the output signal of the o...

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Abstract

The invention discloses a DC line carrier communicator, which is characterized in that: the communicator consists of a transmitting unit and a receiving unit, wherein, the transmitting unit is provided with a modulator, a carrier generator, a data buffer, a push-pull driver and a low-pass filter; and the receiving unit is equipped with an amplitude limiter, a band-pass filter, a frequency selective amplifier, an emitter follower, an envelope detector, a voltage comparator and a voltage reference source. The invention has the advantages of: simple structure, low cost, providing high direct current of a few amperes to dozens of amperes to loads, ensuring the quality of power supply of current, and enhancing the anti-interference ability of the communicator and also the confidentiality of data transmission.

Description

technical field [0001] The invention belongs to wired network communication equipment, in particular to a DC line carrier communicator. Background technique [0002] With the rapid development of electronic technology and embedded system platforms, it is more and more common for multiple coprocessors to work together with a general processor in an application system. In a large number of applications, coprocessors and general processing The distance between devices is relatively long, and the communication between them becomes a key consideration in system design. Using cables and optical fibers as a communication carrier can certainly achieve higher stability, but it will increase the system cost and the complexity of hardware connections. In some special cases, such as the number of connections between the main processor and the coprocessor is limited, it is not feasible to establish a dedicated wired communication carrier. In this case, wireless communication has to be u...

Claims

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Application Information

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IPC IPC(8): H04B3/54
Inventor 蒋富强
Owner 蒋富强
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