EP 0719448 A1 19960703 - FIBEROPTIC PRESSURE SENSOR HAVING DRIFT CORRECTING MEANS FOR IN SITU CALIBRATION
Title (en)
FIBEROPTIC PRESSURE SENSOR HAVING DRIFT CORRECTING MEANS FOR IN SITU CALIBRATION
Title (de)
FASEROPTISCHER DRUCKWANDLER MIT DRIFTKORREKTURVORRICHTUNG ZUR EICHUNG AM MESSORT
Title (fr)
CAPTEUR DE PRESSION A FIBRE OPTIQUE DOTE DE MOYENS DE CORRECTION DE DERIVE POUR L'ETALONNAGE IN-SITU
Publication
Application
Priority
- US 9408570 W 19940729
- US 12118293 A 19930914
Abstract (en)
[origin: WO9508183A1] An improved intensity-encoded fiber optic sensor incorporating novel drift correction means is disclosed. Disclosed is an improved technique for long-term temporal drift cancellation in a fiber optic pressure sensor by periodically applying pressure to the sensor tip (160) in order to ascertain the measured voltage at which the sensor diaphragm (176) contacts other elements of the sensor (182). This measured voltage is subtracted from an initial calibration voltage, and the result is applied to the measured signal as a constant correction term.
IPC 1-7
IPC 8 full level
A61B 5/0215 (2006.01); G01L 9/00 (2006.01); G01L 19/02 (2006.01); G01L 27/00 (2006.01); G02B 6/14 (2006.01); G02B 6/38 (2006.01)
CPC (source: EP)
A61B 5/02154 (2013.01); G01L 9/0077 (2013.01); G01L 19/02 (2013.01); G01L 27/005 (2013.01); G02B 6/14 (2013.01); G02B 6/3845 (2013.01)
Designated contracting state (EPC)
BE DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9508183 A1 19950323; EP 0719448 A1 19960703; EP 0719448 A4 19970305; JP H09505881 A 19970610
DOCDB simple family (application)
US 9408570 W 19940729; EP 94925140 A 19940729; JP 50916095 A 19940729