Time domain electromagnetic interference monitoring method and system
US9239349B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 18, 2009 |
| Grant date | Jan 19, 2016 |
| Priority date | — |
| Expiry date | Sep 30, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/0814
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a method of, and a system for, monitoring electromagnetic interference. The method comprising capturing a plurality of time domain waveforms, and a plurality of scatter plots; receiving the plurality of captured time domain waveforms and scatter plots; applying a fast fourier transform (FFT) to each of the received time domain waveforms as it is received thereby to receive FFT outputs; storing the FFT outputs in a database; generating a statistically representative spectrograph or spectrogram in the frequency domain based on at least the stored FFT outputs and scatter plots or data associated with the scatter plots, combining constituent FFTs of the statistically representative spectrograph or spectrogram in such a manner as to emulate the result that would be produced by an EMI (Electromagnetic Interference) receiver or spectrum analyzer; and combining resultant outputs from a number of iterations of this process to produce a final result (EMI spectrum).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.