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:
Apr. 13, 1993
Filed:
Aug. 30, 1991
Applicant:
Inventors:
Kamil A Grajski, San Jose, CA (US);
Carson Chen, Foster City, CA (US);
Garry Chinn, Los Angeles, CA (US);
Assignee:
Loral Aerospace Corp., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ; F02P / ; G01H / ; G01L / ;
U.S. Cl.
CPC ...
123425 ; 73 35 ; 73587 ;
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.