Identifying degraded fans in datacenters
AssigneeOracle International Corporation
InventorsRamakrishna C. Dhanekula, Kenneth C. Gross
Life of this patent
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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.
Claims20
A method for identifying a degraded fan, comprising steps of:
- measuring acoustic data from an operating datacenter fan;
- determining a motor rotation frequency and a vane passing frequency of the fan from the acoustic data;
- determining amplitudes of the frequencies of the fan from the acoustic data;
- and
- if the amplitude of the motor rotation frequency is greater than the amplitude of the vane passing frequency, then determining that the fan is degraded.
A method for identifying a degraded fan, comprising steps of:
- measuring acoustic data from an operating datacenter fan;
- identifying amplitudes of frequencies measured from the acoustic data;
- identifying a peak amplitude of the frequencies measured from the acoustic data;
- comparing the frequency of the peak amplitude with frequency data for predicted undegraded fans;
- and
- if the frequency of the peak amplitude is not within a predetermined tolerance to a frequency for predicted undegraded fans, determining that the fan is degraded.
A method for identifying a degraded fan, comprising steps of:
- measuring acoustic data from an operating datacenter fan;
- identifying amplitudes of frequencies measured from the acoustic data;
- identifying a peak amplitude of the frequencies measured from the acoustic data;
- comparing the frequencies of the amplitudes with frequency data for predicted undegraded fans;
- if the frequency of one of the amplitudes is within a predetermined tolerance to a frequency for predicted undegraded fans, determining a ratio of the amplitude of the frequency that is within the predetermined tolerance for a predicted undegraded fan, to the peak amplitude;
- and
- if the ratio is less than one, determining that the fan is degraded.
Dependencies are inferred from the claim text.