US 8,805,128 B2 · Multi-point pressure sensor and uses thereof

Abstract

A sensing device for detecting a physical parameter exemplified by pressures, strains, temperatures, indices of refraction, and combinations thereof. The sensing device comprises a probe having a housing for sealably mounting therein an optical fiber. The optical fiber is provided at its distal end with at least two spaced apart fiber Bragg gratings. The proximal end of the probe is engagable with a holder, and is in communication with fiber Bragg grating interrogation systems. Spacers and seals may be provided about the optical fiber between the fiber Bragg gratings. An orifice may be provided and sealed with a resilient membrane to provide a contained airspace around each fiber Bragg grating. The contained airspace may be optionally filled with a fluid or a gas.

Claims26

Dependent claims

A sensing device for detecting a physical parameter, the sensing device comprising:

a probe comprising a housing for sealably mounting a sensor therethrough, the probe having a distal portion configured for detecting a physical parameter and a proximal portion configured to be coupled to a signal processing device;
a sensor comprising an optical fibre extending therealong, the optical fibre having a section extending along a distal portion wherein the fibre is provided with one or more spaced-apart fibre Bragg gratings;
a resilient membrane situated adjacent an end of the associated fibre Brace crating and sealed to the housing;
a spacer affixed to the fibre and secured to the resilient membrane so as to be translatable along a length of the housing;
and
a holder configured for engaging a proximal portion of the probe whereby a distal portion of the probe extends from the holder.

3 more elements

Dependencies are inferred from the claim text.

Multi-point pressure sensor and uses thereof

Life of this patent

Multi-point pressure sensor and uses thereof

Life of this patent

Abstract

Claims26