Direct reading temperature and circumferential tire monitor

Details Direct reading temperature and circumferential tire monitor Direct reading temperature and circumferential tire monitor

1980-02-11

1982-09-14

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

2503581, 374128, 374129, G01J 500, G01M 1702

Patent

active

043488986

ABSTRACT:
An infrared scanner for sensing temperature is presented with the inclusion of a meter providing a digital read-out of the temperature. The scanner utilizes an infrared detector, scanning a field including a reference of known temperature and an object of unknown temperature. The scan is performed by a raster controlled by a horizontal oscillator and a vertical sweep circuit. During the scan, video signals are emitted from a video amplifier, which signals correspond to the temperature of objects within the raster. Delay circuits are provided in interconnection between the video amplifier, horizontal oscillator, and vertical sweep circuit for isolating video signals corresponding to the temperature of the reference and the object. A logarithmic amplifier receives such video signals and produces an output indicative of the temperature of the object as a function of the temperature of the known reference. A digital volt meter receives the output of the logarithmic amplifier and presents a digital read-out of the temperature of the object.

REFERENCES:
patent: 2846882 (1958-08-01), Gray
patent: 3539807 (1970-11-01), Bickel
patent: 3727054 (1973-04-01), Herrick
patent: 3807226 (1974-04-01), Williams
patent: 3854336 (1974-12-01), Bibby
patent: 3872715 (1975-03-01), Pittaro
patent: 3919882 (1975-11-01), Wells
patent: 4001497 (1977-01-01), Bosworth
patent: 4121459 (1978-10-01), MaCall et al.
patent: 4174705 (1979-11-01), Buchner
Publ. "AGA Thermovision 680 Operating Manual", Sections 3 and 5, ThV 680 Oper. Man. 7010, 1975.

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