US 12,449,331 B2
Detecting failure of a fan of an information handling system
Qinghong He, Austin, TX (US); and Douglas Jarrett Peeler, Austin, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Jul. 7, 2022, as Appl. No. 17/811,147.
Prior Publication US 2024/0011874 A1, Jan. 11, 2024
Int. Cl. G01M 99/00 (2011.01); H04R 1/08 (2006.01); H04R 3/00 (2006.01); H05K 7/20 (2006.01)
CPC G01M 99/008 (2013.01) [H04R 1/08 (2013.01); H04R 3/00 (2013.01); H05K 7/20136 (2013.01); H04R 2430/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-implemented method of detecting failure of a fan of an information handling system, the method comprising:
identifying a sound pressure level of an environmental noise associated with an environment of the information handling system;
comparing the sound pressure level of the environment noise with a threshold;
determining, based on the comparing, that the sound pressure level of the environment noise is less than the threshold, and in response:
increasing a magnitude of a revolutions per minute (RPM) of the fan to correspond to a sound pressure level of a fan noise greater than the sound pressure level of the environmental noise;
analyzing a frequency spectrum of the fan noise;
determining, based on the analyzing, whether the frequency spectrum of the fan noise includes discrete tones at one or more harmonic frequencies of the fan at the RPM;
determining that the frequency spectrum of the fan noise includes discrete tones at one or more harmonic frequencies of the fan at the RPM; and
in response to determining that the frequency spectrum of the fan noise includes discrete tones at one or more harmonic frequencies of the fan at the RPM, determining that a shaft of the fan is contacting a sleeve of the fan at one or more points to produce the discrete tones at the harmonic frequencies, and perform an action that is in response to such determination.