Fiber grating environmental sensing system

Udd, Eric; Calvert, Sean G.; Schulz, Whitten L.; Kunzler, W. Marley; Kunzler, M. Wesley

Title: Fiber grating environmental sensing system

Patent · Tue May 02 00:00:00 EDT 2006

OSTI ID:1531509

Udd, Eric; Calvert, Sean G.; Schulz, Whitten L.; Kunzler, W. Marley; Kunzler, M. Wesley

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.

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Research Organization:: Blue Road Research, Fairview, OR (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: FG03-99ER82753

Assignee:: Udd, Eric, Fairview, OR (United States)

Patent Number(s):: 7,038,190

Application Number:: 10/325,874

OSTI ID:: 1531509

Resource Relation:: Patent File Date: 2002-12-20

Country of Publication:: United States

Language:: English

References (11)

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Health monitoring of an Oregon historical bridge with fiber grating strain sensors Seim, John M.; Udd, Eric; Schulz, Whitten L. 1999 Symposium on Smart Structures and Materials, SPIE Proceedings https://doi.org/10.1117/12.348662	conference	May 1999
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Fiber grating moisture and chemical sensing system Schulz, Whitten; Udd, Eric https://doi.org/https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/6683297 US Patent Document 6,683,297	patent	January 2004
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