Patent ID: 7065474
Filing Date: 2006-06-20
Classification: G01H,G01R

Abstract:
1. A frequency rectification system for processing asset signals, said system comprising in combination: a signal generator means for generating a complex signal from an asset, said complex signal comprised of a noise signal and a signal of interest having a corresponding frequency of interest wherein said complex signal includes a first spectrum having largest spectral peaks corresponding to said noise signal and comprised of at least one largest spectral peak at said frequency of interest which is larger than a spectral peak of said signal of interest at said frequency of interest wherein said signal of interest at said frequency of interest is hidden under said noise signal; a Van der Pol oscillator operatively coupled to said signal generator means and including selectable parameters for receiving and rectifying said complex signal into a rectified signal comprised of a second spectrum having a largest spectral peak corresponding to said signal of interest with all other spectral peaks smaller, and extraction means, operatively coupled to said Van der Pol oscillator, for extracting said frequency of interest from said rectified signal for use in providing asset information.