The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 14, 2013
Filed:
Mar. 29, 2010
Applicants:
Ramakrishna C. Dhanekula, San Diego, CA (US);
Kenneth C. Gross, San Diego, CA (US);
Inventors:
Ramakrishna C. Dhanekula, San Diego, CA (US);
Kenneth C. Gross, San Diego, CA (US);
Assignee:
Oracle America, Inc., Redwood City, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 5/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for identifying a degraded fan measures acoustic data from an operating datacenter fan. A motor rotation frequency and a vane passing frequency are determined from the acoustic data. Amplitudes of the frequencies are determined from the acoustic data. If the amplitude of the motor rotation frequency is greater than the amplitude of the vane passing frequency, then it is determined that the fan is degraded.