Apparatus and method for detecting vibration patterns

Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...

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73 35, 73587, F02D 4114, F02P 515, G01H 1700, G01L 2322

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active

052012921

ABSTRACT:
An electronic detection system for detecting vibration patterns from physical events, such as engine knocking or articulated speech, senses a vibration source with a wideband transducer to provide a sensed signal, then converts this signal to energy amplitude and spectral frequency form to extract detectable features of the vibration pattern. Events are detected when a controller determines that the sensed energy and spectral data exceed adaptively-predetermined energy and spectral thresholds, preferably for a duration exceeding predefined time windows.

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