Method and apparatus for machine diagnosis

Details Method and apparatus for machine diagnosis Method and apparatus for machine diagnosis

1996-02-20

1998-03-24

Bennett, G. Bradley

Thermal measuring and testing

Thermal testing of a nonthermal quantity

374 4, G01N 2500

Patent

active

057305269

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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