Patent ID: 9182342
Filing Date: 2015-11-10
Classification: G01N

Abstract:
1. A system for identifying a presence of a material in a medium wherein the medium is at least one of a gas and a fluid, the system comprising: a chamber in which the medium is located wherein the chamber has a first side and a second side wherein the first side is located in an opposite position relative to the second side and further wherein the first side has an aperture; an LED to emit light wherein the LED is adjacent to the first side of the chamber wherein the LED is located exterior to the chamber and further wherein the light emitted from the LED transmits into the chamber through the aperture of the first side; a first light detector which detects an intensity of the light at a first position on the second side of the chamber wherein the first light detector is adjacent to the second side of the chamber and further wherein the first light detector produces a first signal indicative of the intensity of the light at the first position; a second light detector which detects an intensity of the light at a second position on the first side of the chamber wherein the second light detector is adjacent to the first side of the chamber wherein the second light detector is adjacent to the LED wherein the second light detector is located exterior to the chamber and further wherein the second light detector produces a second signal indicative of the intensity of the light at the second position; a third light detector which detects an intensity of the light at a third position within the chamber wherein the third light detector is located within the chamber and further wherein the third light detector produces a third signal indicative of the intensity of the light at the third position; and a microprocessor communicatively connected to the first light detector, the second light detector and the third light detector wherein the microprocessor processes the first signal, the second signal and the third signal to determine whether the material is present in the medium.