Low voltage power line high-frequency noise sampling and replaying system
A low-voltage power line and sampling circuit technology, applied in distribution line transmission systems, electrical components, impedance networks, etc., can solve the problems of transient, non-repetitive, and difficult low-voltage power line noise
Active Publication Date: 2014-06-18
NANJING ZHIDE SOFTWARE TECH +2
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Problems solved by technology
However, low-voltage power line noise is fleeting and non-repeatable. It is extremely difficult to find and analyze the problems
Method used
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[0010] Referring to the accompanying drawings, its structure includes an input unit, an A / D sampling circuit, a storage circuit, a core unit, a D / A circuit, an output unit, and the signal input terminals of the low-voltage power supply system for testing are connected correspondingly, wherein the signal input terminals of the input unit Connect the low-voltage power line, the signal output end of the input unit is connected with the signal input end of the A / D sampling circuit correspondingly, the first signal input / output end of the A / D sampling circuit is correspondingly connected with the first signal output / input end of the storage circuit connected, the second signal input / output end of the A / D sampling circuit is correspondingly connected with the first signal output / input end of the core unit, the second signal output / input end of the storage circuit is connected with the second signal input / output end of the core unit The third signal output / input end of the storage cir...
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The invention relates to a low voltage power line high-frequency noise sampling and replaying system, which comprises an input unit, an A / D (analog to digital) sampling circuit, a storage circuit, a core unit, a D / A (digital to analog) circuit, an output unit and a low voltage power supply system used for testing, wherein the input unit is connected with the A / D sampling circuit, the A / D sampling circuit is connected with the storage circuit, the A / D sampling circuit is connected with the core unit, the storage circuit is connected with the core unit, the storage circuit is connected with the D / A circuit, the D / A circuit is connected with the core unit, the D / A circuit is connected with the output unit, and the output unit is connected with the lower voltage power supply system used for testing. The invention has the advantages that work frequency isolation is carried out on on-site low voltage power lines, high-frequency noise is sampled and stored, and a replay function is realized under the control of the core unit, so on-site complicated and fussy data acquisition, analysis, debugging and test work can be repeated infinitely latterly or in a laboratory so as to help users to find the roots of problems more effectively.
Description
technical field [0001] The invention relates to a low-voltage power line high-frequency noise sampling and playback system, which is a tool for carrier communication testing, channel detection and product debugging of low-voltage power lines. Background technique [0002] The low-voltage power line transmits power frequency power. The line itself is open and susceptible to external interference. Many electrical equipment on the low-voltage power line will also generate various noises, so the low-voltage power line has many other frequency components besides the power frequency. These frequency components other than power frequency can be collectively referred to as high-frequency noise. These noises affect other applications on low voltage power lines. Although there are some products such as oscilloscopes and oscilloscopes that can test and record the noise of low-voltage power lines, and some products have the function of data download and output, such as arbitrary wave s...
Claims
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IPC IPC(8): H04B3/56H03H17/02
Inventor 陆健友赵永春颜庭乔
Owner NANJING ZHIDE SOFTWARE TECH