Dual sensor radiation detector

Details Dual sensor radiation detector Dual sensor radiation detector

1988-03-04

1989-05-16

Howell, Janice A.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

2503381, 374121, 374125, 374129, G01J 526

Patent

active

048312584

ABSTRACT:
A radiation detector has a dual element sensor. One sensor element detects thermal radiation of a target at the same time the second sensor element detects thermal radiation of a reference object adjacent to the target. The dual element sensor produces a signal of the difference in the sensed radiations. A remote meter displays the thermal difference and provides an indication of sensed mass of the target relative to the mass of the reference. The display is driven by a circuit which provides a fast response of the sensed thermal difference and a slow decay of the response to provide a somewhat continuous display between targets detected in a series. Alarms may be sounded in accordance with certain readings of the display. A continuously flowing, dynamic pattern of thermal differences is detected and displayed in applications of the detector to assembly line processes.

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patent: 4636091 (1987-01-01), Pompei et al.
patent: 4746224 (1988-05-01), Mizuno et al.

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