Apparatus for acoustic detection of particles in a flow using a fiber optic interferometer
AssigneeOptopian AS
InventorsJon Thomas Kringlebotn, Erlend Rønnekleiv, Sverre Knudsen
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Abstract
Fiber optic particle detector for measurements in a fluid flow, comprising an optical fiber (2,3,12) being acoustically coupled to a mechanical element (11,13,14) adapted to be acoustically coupled to the flow, a fiber optic interferometer (54,56) and a light source (12,51,55) providing light in said optical fiber.
Claims74
Fibre optic particle detector for measurements in a fluid flow, comprising:
- a transducer element;
- an optical fibre;
- an optical interferometer;
- and
- an optical light source providing light in said fiber,
- the optical fiber being attached to the transducer element,
- wherein the transducer element is arranged to be hit by particles moving in the flow by exposing part of said transducer element to the flowing fluid, each particle hitting the exposed part thus generating acoustic waves propagating some distance in the transducer element to the optical fibre.
Fibre optic particle detector for measurements in a fluid flow, comprising:
- a transducer element;
- an optical fibre;
- an optical interferometer;
- and
- an optical light source providing light in said fiber,
- the optical fiber being embedded in the transducer element,
- wherein the transducer element is arranged to be hit by particles moving in the flow by exposing part of said transducer element to the flowing fluid, each particle hitting the exposed part thus generating acoustic waves propagating some distance in the transducer element to the optical fibre.
Fibre optic particle detector for measurements in a fluid flow, comprising:
- a transducer element;
- a mechanical structure in acoustic contact with the transducer element;
- an optical fibre;
- an optical interferometer;
- and
- an optical light source providing light in said fiber,
- the optical fiber being attached to the transducer element,
- wherein said mechanical structure is arranged to be hit by particles moving in the flow by exposing part of said mechanical structure to the flowing fluid, each particle hitting the exposed part thus generating acoustic waves propagating some distance in the mechanical structure to the optical fibre.
Fibre optic particle detector for measurements in a fluid flow, comprising:
- a transducer element;
- a mechanical structure in acoustic contact with the transducer element;
- an optical fibre;
- an optical interferometer;
- and
- an optical light source providing light in said fiber,
- the optical fiber being embedded in the transducer element,
- wherein said mechanical structure is arranged to be hit by particles moving in the flow by exposing part of said mechanical structure to the flowing fluid, each particle hitting the exposed part thus generating acoustic waves propagating some distance in the mechanical structure to the optical fibre.
Fibre optic particle detector for measurements in a fluid flow, comprising:
- a transducer element;
- an optical fibre;
- an optical interferometer;
- and
- an optical light source providing light in said fiber,
- the optical fiber being at least one of attached to, or embedded in, the transducer element,
- wherein the transducer element is arranged to be hit by particles moving in the flow by exposing part of said transducer element to the flowing fluid, each particle hitting the exposed part thus generating acoustic waves propagating some distance in the transducer element to the optical fibre.
Dependencies are inferred from the claim text.