TRD temperature sensor

Details TRD temperature sensor TRD temperature sensor

1991-09-13

1992-08-18

Hellner, Mark

Thermal measuring and testing

Temperature measurement

Nonelectrical, nonmagnetic, or nonmechanical temperature...

2504611, 25022727, 252962, G01J 502

Patent

active

051406098

ABSTRACT:
A temperature sensing system has a signal means which provides a signal representative of a temperature responsive luminescence, where the luminescence has a characteristic time-rate-of-decay. A means for comparison is connected to the signal means and samples the signal during two time intervals, the first interval overlapping the second. The averages of the samples are compared to provide a difference signal representative of the difference between the two measured averages. Control means coupled to the comparison means provide an output representing the temperature as a function of the time-rate-of-decay, by adjusting the overlapping intervals so that the difference signal converges to a preselected limit.

REFERENCES:
patent: 4708494 (1987-11-01), Kleinerman
patent: 4816687 (1989-03-01), Fehrenbach et al.
patent: 5035513 (1991-07-01), Fehrenbach et al.
patent: 5036194 (1991-07-01), Hazel
Knierim et al., "Optical and Lasing Properties of V.sub.2.sup.+ -doped Halide Crystals", J. Opt. Soc. Am. B, vol. 3, No. 1, pp. 119-124 (Jan. 1986).
Jensen et al., "A Fiber Optic Temperature Sensor for Aerospace Applications", OE/FIBER '90 Conference, San Jose, Calif. Sep. 16-21, 1990, sponsored by the Society of Photo-Optical Instrument Engineers (SPIE).

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