Patent ID: 9489341
Filing Date: 2016-11-08
CPC Classification: F24H,G05B

Claim Text:
1. A method for predicting an impending failure of a climate control system, comprising: sensing a plurality of temperature measurements within a storage volume of the climate control system during a first time period; storing, by a processor of the climate control system, the plurality of temperature measurements as a temperature history in a memory of the climate control system; calculating, by the processor, a spectral analysis of the temperature history that includes a primary frequency having a primary frequency magnitude and a secondary harmonic having a secondary harmonic magnitude; calculating, by the processor, a first volumetric measure based on the primary frequency magnitude and the secondary harmonic magnitude; comparing, by the processor, the first volumetric measure to a reference volumetric measure; determining, by the processor, that the second harmonic magnitude has degraded to the point of an impending failure of the climate control system in response to the first volumetric measure being less than the reference volumetric measure by a predetermined percentage; and outputting, by the processor, an alert of the impending failure of the climate control system in response to determining that the second harmonic magnitude has degraded to the point of the impending failure.