Global Patent Index - EP 2926104 A2

EP 2926104 A2 20151007 - METHOD FOR LOCALLY RESOLVED PRESSURE MEASUREMENT

Title (en)

METHOD FOR LOCALLY RESOLVED PRESSURE MEASUREMENT

Title (de)

VERFAHREN ZUR ORTSAUFGELÖSTEN DRUCKMESSUNG

Title (fr)

PROCÉDÉ DE MESURE DE PRESSION À RÉSOLUTION SPATIALE

Publication

EP 2926104 A2 (DE)

Application

EP 13796047 A

Priority

  • AT 12462012 A
  • EP 2013074627 W

Abstract (en)

[origin: WO2014082965A2] The invention relates to a method and device for locally resolved pressure measurement along a pressure region. Using a glass optical fibre (11) comprising an optical fibre core (11''), an optical fibre cladding (11'), and an outer protective coating (16) running inside a tubular enclosure (6) in the longitudinal direction of the enclosure (6), pressure acting isotropically on a length section of the tubular enclosure (6) arranged along the pressure region (15) is transformed into an asymmetric pressure load on the region of the optical fibre cladding (11) lying within the length section. The double refraction caused by the asymmetric pressure load in this length section is detected by using a reflection measurement along the optical fibre (11), and the pressure acting on the length section is determined from the asymmetric pressure load determined in this manner. Using this invention it is possible to measure locally resolved pressure along the optical fibre (11) and thus to determine in an inexpensive fashion the development of pressure along the tubular enclosure (6) arranged in the pressure region (15).

IPC 8 full level

G01L 11/02 (2006.01)

CPC (source: AT EP US)

E21B 47/06 (2013.01 - US); G01L 11/025 (2013.01 - AT EP US)

Citation (search report)

See references of WO 2014082965A2

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2014082965 A2 20140605; WO 2014082965 A3 20140814; AT 513732 A1 20140615; AT 513732 B1 20150515; CA 2892345 A1 20140605; EP 2926104 A2 20151007; US 2015323405 A1 20151112

DOCDB simple family (application)

EP 2013074627 W 20131125; AT 12462012 A 20121127; CA 2892345 A 20131125; EP 13796047 A 20131125; US 201314647446 A 20131125