Patent ID: 6204920
Filing Date: 2001-03-20
Classification: G01D,G01L

Abstract:
A system comprising:a first light responsive sensor having a first operating bandwidth wherein the first sensor modifies light provided to it at a wavelength indicative of a first sensed parameter;a second light responsive sensor having a second operating bandwidth wherein the second operating bandwidth is different from the first operating bandwidth and wherein the second sensor modifies light provided to it at a wavelength indicative of a second sensed parameter;a tunable light source providing light illuminating the first and second sensors, the light provided to each of the first and second sensors having a wavelength which varies over the first and second bandwidths;a detecting circuit for providing a signal representative of light modified by the first and second sensors; anda processor for processing the representative signals provided by the detecting circuit to determine the first parameter being monitored by the first sensor.