The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 2015
Filed:
Oct. 22, 2012
Quantum Group, Inc., San Diego, CA (US);
Mark K. Goldstein, Del Mar, CA (US);
Michelle S. Oum, Chula Vista, CA (US);
Quantum Group Inc., San Diego, CA (US);
Abstract
A miniature lower cost optical sensing apparatus and method are provided for determining the concentration and/or hazard from a target gas by means of IR or visible photon monitoring one or more sensors that responds to carbon monoxide. The apparatus comprises a photon source optically coupled to the sensor and at least a portion of the photon intensity passing through the sensor is quantified by one or more photodiode(s) in a system, so that the photon flux is a function of at least one sensor's response to the target gas, e.g., transmits light through the sensor to the photodiode. The photo current from the photodiode is converted to a sensor reading value proportional to the optical characteristics of the sensors and is loaded into a microprocessor or other logic circuit. In the microprocessor, the sensor readings may be differentiated to determine the rate of change of the sensor readings and the total photons absorbed value may be used to calculate the CO concentration and/or dose.