Noncontact active temperature sensor

Details Noncontact active temperature sensor Noncontact active temperature sensor

1994-01-10

1997-07-08

Gutierrez, Diego F. F.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

374164, G01K 700, G01K 120, G01K 716

Patent

active

056453493

ABSTRACT:
A noncontact active infrared sensor is provided with bifurcated sensing elements. A first element is uniquely exposed to the remote object, thereby establishing a radiative flux. A second element is configured in the same local environment as that of the first element but isolated from radiation from the remote object. The heat transfer of both elements is compared and that component of heat transfer corresponding to flux with the remote object is isolated and converted into a temperature signal. The sensor system advantageously incorporates individual thermal control units onto both sensor elements to accurately control salient thermal transfers while thermally decoupling the sensor elements. This provides for a more accurate reading of the temperature of the remote object.

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patent: 4722612 (1988-02-01), Junkert et al.
patent: 4854730 (1989-08-01), Fraden
patent: 5054936 (1991-10-01), Fraden

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