Method and apparatus for machine diagnosis
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United States of America Patent
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Mar 24, 1998
Grant Date -
N/A
app pub date -
Feb 20, 1996
filing date -
Feb 21, 1995
priority date (Note) -
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Abstract
A method and apparatus for analysis of brakes in automotive vehicles, and related aspects of engine performance and like applications, senses heat energy which is generated internally of an article to be analysed. Spot-type infra-red thermometers are employed to sense localised temperature elevation produced by brake application from a remote location using visual positioning guides to enable the spot zones sensed to be accurately located on, for example, wheel nuts/studs, which provide a thermal transfer route from the brake drums or discs. Analysis of the thermal data from the sensors includes a peak detect-and-hold function to avoid the need for maintenance of accurate alignment of the sensors. Comparison of the thermal data enables detection of braking imbalance.
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