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:
May. 02, 2006
Filed:
Dec. 20, 2002
Eric Udd, Fairview, OR (US);
Sean G. Calvert, Troutdale, OR (US);
Whitten L. Schulz, Fairview, OR (US);
W. Marley Kunzler, Gresham, OR (US);
M. Wesley Kunzler, Gresham, OR (US);
Eric Udd, Fairview, OR (US);
Sean G. Calvert, Troutdale, OR (US);
Whitten L. Schulz, Fairview, OR (US);
W. Marley Kunzler, Gresham, OR (US);
M. Wesley Kunzler, Gresham, OR (US);
Other;
Abstract
A fiber grating environmental sensing system is described that has the ability to measure strain, vibration, humidity and water content. Fiber gratings are used to measure axial strain to accomplish these goals. An approach is described that uses matched fiber grating sensors and filters to allow for thermal compensation greatly reducing one of the key performance issues facing these systems. The system may be deployed in such applications as roadways and paved surfaces, bridges, buildings and aircraft and spacecraft. Means are described to implement transducers optimized for specific environmental measurements as well as means to demodulate the fiber grating sensors.