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:
Nov. 19, 2013
Filed:
Mar. 27, 2012
Thomas M. Rezachek, Cottage Grove, MN (US);
Thomas M. Rezachek, Cottage Grove, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
Some embodiments relate to a photoacoustic sensor that includes a gas cell having an opening and a detector to collect pressure fluctuations within the gas cell to determine a spectral content of the pressure fluctuations within the ambient environment. The photoacoustic sensor further includes a light source to generate radiation to radiate sample gas within the gas cell and a control that receives signals from the detector that represent the spectral content of the pressure fluctuations within the ambient environment. The control adjusts a frequency of the radiation produced by the light source to a frequency that conflicts less with the spectral content of the pressure fluctuations within the ambient environment. The detector generates output electrical signals in response to acoustic signals generated by pressure fluctuations of the radiated sample gas.