Patent ID: 6591226
Filing Date: 2003-07-08
Classification: G01M,G01N

Abstract:
An acoustic diagnostic system, comprising:a sensor mechanism to convert mechanical vibrations of a test object into electrical signals; a signal conditioning unit to amplify and low-pass filter the electrical signals; an analog/digital converter to convert the amplified and low-pass filtered signals into discrete digital data; a signal processing unit to perform a signal analysis, an extraction of characteristics of the electrical signals, and a classification of the characteristics into an error class of mechanical defects in the physical structure of the test object and a quality class indicative of an overall quality of the test object; an archive to automatically archive an occurrence of the error class and the quality class, and to automatically archive a frequency of occurrences of the error class and the quality class; and a component to detect redundant ones of the characteristics by determining correlations between the characteristics.