Thermal measuring and testing – Temperature measurement – Combined with diverse art device
Patent
1992-01-21
1993-09-07
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
Combined with diverse art device
165 8, 236DIG15, 250347, 356 43, 374 5, G01J 100, G01N 2300, G01N 2572
Patent
active
052422240
ABSTRACT:
A temperature monitoring unit has a high degree of sensitivity and reliability even when monitoring the temperature of a relatively large rotary heating element. The temperature monitoring unit includes a mirror which is provided in the vicinity of the rotary heating element and is oriented to reflect infrared rays from the heating element in the radial direction thereof, the mirror being reciprocated linearly in the radial direction, a condenser lens provided radially outwardly of the heating element for converging the infrared rays reflected by the mirror, an infrared sensor on which the converged rays impinge, a plate provided between the mirror and the lens and which has a slit therein that is elongate in a direction approximately perpendicular to the surface of the heating element, and an image processor receiving the output of the infrared sensor. The sensitivity is high because infrared rays from around the thermal point of the heating element are blocked by the plate. Moreover, because the visual field is elongate in the radial direction of the heating element, the mirror can quickly scan the entirety of the heating element.
REFERENCES:
patent: 3630085 (1971-12-01), Roney et al.
patent: 3766539 (1973-10-01), Bradshaw et al.
patent: 4316088 (1982-02-01), Cobier et al.
patent: 4435093 (1984-03-01), Krause et al.
patent: 4671674 (1987-06-01), Detronde
Hisamatsu Ken-ichi
Kaneko Shozo
Watanabe Nobuya
Yoshikawa Keiji
Yoshioka Shunsuke
Mitsubishi Jukogyo Kabushiki Kaisha
Yasich Daniel M.
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