US 11,300,482 B2 · Graphical differentiation of spectral frequency families

Abstract

Spectral machine condition energy peaks are graphically represented in a spectral plot using color coding, different line types, and/or filtering. This allows visual differentiation of spectral peaks associated with various fault frequency families from one another, whereby a machine condition analyst using computer-based analysis software can easily see each family of spectral peaks individually, without all the other spectral peaks, or in combinations of families that are relevant to a machine fault under investigation. In addition to current spectral data, the analyst can also view a historical trend of related scalar parameters plotted in conjunction with current spectral data, wherein the spectral data plot is synchronized with a time-based cursor on the trend plot.

Claims25

Dependent claims

A computer implemented method for processing machine vibration data to aid in visualizing vibration spectral energy peaks, comprising:

(a) accessing time waveform machine condition data from a memory or storage device, wherein the time waveform machine condition data was measured at a first measurement time that occurred within an extended period of time;
(b) performing a Fast Fourier Transform on the time waveform machine condition data to generate a spectrum;
(c) locating spectral peaks in the spectrum;
(d) identifying fault frequency peaks in the spectral peaks;
(e) receiving input from an interface device operated by a user to select one or more groups of fault frequency peaks to be displayed;
and
(f) displaying the one or more selected groups of fault frequency peaks in a spectral plot on a graphic display device, wherein each of the one or more selected groups of fault frequency peaks is displayed in a color or a line style that is different from colors or line styles in which other spectral peaks are displayed.

4 more elements

A computer implemented method for processing machine condition data to aid in visualizing spectral energy peaks, comprising:

(a) accessing time waveform machine condition data from a memory or storage device, wherein the time waveform machine condition data was measured at a first measurement time that occurred within an extended period of time;
(b) performing a Fast Fourier Transform on the time waveform machine condition data to generate a spectrum;
(c) locating spectral peaks in the spectrum;
(d) identifying fault frequency peaks in the spectral peaks;
(e) receiving input from an interface device operated by a user to select one or more groups of fault frequency peaks to be displayed;
(f) displaying the one or more selected groups of fault frequency peaks in a spectral plot on a graphic display device;
(g) determining energy associated with each of the one or more selected groups of fault frequency peaks;
and
(h) displaying the energy determined in step (g) in a trend plot that is displayed on the graphic display device simultaneously with the spectral plot, wherein the trend plot covers the extended period of time.

6 more elements

Dependencies are inferred from the claim text.

Graphical differentiation of spectral frequency families

Life of this patent

Graphical differentiation of spectral frequency families

Life of this patent

Abstract

Claims25