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:
Aug. 02, 2005
Filed:
Oct. 20, 2003
Method and apparatus of monitoring temperature and strain by using fiber bragg grating (fbg) sensors
Applicants:
Michael Willsch, Furth, DE;
Thomas Bosselmann, Marloffstein, DE;
Zal Sanjana, Pittsburgh, PA (US);
Nils Theune, Erlangen, DE;
Inventors:
Michael Willsch, Furth, DE;
Thomas Bosselmann, Marloffstein, DE;
Zal Sanjana, Pittsburgh, PA (US);
Nils Theune, Erlangen, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M015/00 ;
U.S. Cl.
CPC ...
Abstract
A method and apparatus for monitoring changes in temperature or strain, using fiber Bragg gratings (FBG). The Method and apparatus is advantageously useful for the measurement under harsh conditions, such as by combustion turbines. The invention uses the wavelength shift which is caused by temperature or strain changes at the FBG and the changing of the refraction index of the fiber.