Extraction and synchronous playback device of power line interference signals

A technology of interfering signal and synchronous playback, applied in distribution line transmission system, electrical components, wired transmission system, etc., can solve the problem of unretrieved interfering signal and power frequency correlation, etc., to ensure the effect of time domain correlation
CN106982079AInactive Publication Date: 2017-07-25ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
Publication Date
2017-07-25
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses an extraction and synchronous playback device of power line interference signals. The extraction and synchronous playback device is composed of a signal collection module, a signal playback module, a signal processing module, a signal storage module, a mode control module, a network communication module, a clock generation and distribution module and a control output module, a detected signal is collected and transmitted by the signal collection module to the signal processing module to be processed, the signal processing module stores the processed signal in the signal storage module and transmits the signal to the signal playback module, the mode control module inputs a trigger signal to control the signal playback module to output a playback signal through a generated clock signal, the mode control module is connected with a network interface through the network communication module, the mode control module is further connected with the control output module, and the control output module is used for controlling the output of a state indication signal. Isolated sampling and high fidelity playback of non power frequency signals on power lines are realized.
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Description

technical field

[0001] The invention relates to the technical field of power signal extraction and processing, in particular to a power line interference signal extraction and synchronous playback device. Background technique

[0002] Power line carrier communication occupies an important position in the downlink channel of the power information collection system, and it has the advantages of low construction cost and no operating cost. Because there are many interference signals on the power line, with the irregular cut-in and cut-out of electrical equipment, the interference signals are randomly distributed and have time-varying characteristics. Carrier communication uses the power line as the transmission channel, and the interference signal of the power grid has a serious impact on the communication process, resulting in a low success rate of meter reading and a low data transmission rate in the existing carrier communication. Effective extraction and playback of grid i...

Claims

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