Optically coupled remote sensor apparatus and system

Details Optically coupled remote sensor apparatus and system Optically coupled remote sensor apparatus and system

G - Physics

01

D

325/1

G01D 5/26 (2006.01) G01D 5/243 (2006.01)

Patent

CA 1297537

18 54,013 ABSTRACT OF THE DISCLOSURE An optically coupled remote sensor apparatus comprises a tuned circuit incorporating a sensor and a light emitting diode (LED) connected in parallel with the tuned circuit. The natural resonant frequency of the tuned circuit is determined by the sensor whose electrical parameter is a function of the condition to be sensed. The sensed condition correlates to a frequency of light pulses emitted from the LED, which light pulses are only emitted when the pulsed light source frequency coincides with the natural resonant frequency of the tuned circuit.

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