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Acoustic Airflow Noise Detector

IP.com Disclosure Number: IPCOM000048021D
Original Publication Date: 1983-Sep-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Pennell, GF: AUTHOR [+3]

Abstract

In computer systems it is important to immediately detect any malfunction which occurs in the blower which is used to cool the components. The reason for this is that overheating can destroy expensive electronic components.

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Acoustic Airflow Noise Detector

In computer systems it is important to immediately detect any malfunction which occurs in the blower which is used to cool the components. The reason for this is that overheating can destroy expensive electronic components.

A malfunction in a blower can be detected by having a microphone in the airflow path. The output of the microphone is amplified and integrated to obtain a DC level which corresponds to the noise level of the device being monitored. The integration time is selected long enough to reject short-term, extraneous noise and short enough to provide sufficient reaction time to detect problems. A level detector can be connected to the output of the integrator and adjusted so that it provides one level when the monitor device is functioning normally and another level when the blower is not operating. The output of the detector can then signal a blower malfunction.

Anonymous

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