US 9,316,627 B2Granted

Method and device for determining gas component inside a transparent container

AssigneeOy Sparklike AB

InventorsKai Niiranen, Miikkael Niemi, Mikko Syrjalahti

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Abstract

A device for determining existence of a gas component inside a space of a glass unit includes detecting unit and calibration units. The detecting unit includes laser beam emitting elements emitting laser beam towards the space and detecting elements for detecting reflections of emitted laser beams. The calibration unit includes a calibration chamber having the same gas component as inside the space, and a reflector. The laser beam emitting and detecting elements are arranged to emit and receive beams at an angle so that the focus of the laser spot locates between the laser emitting and detecting elements and outside the line connecting them at the same position in relation to the detecting unit during the measuring process. The detecting and calibration units are movable in relation to each other for calibration purpose so that the laser beam travels through the chamber and the focus spot hits the reflector.

Claims15

Dependent claims

A device for non-invasively determining existence of a gas component of interest inside a space of a glass unit, wherein the device comprises a detecting unit and a calibration unit, wherein said detecting unit comprises a laser beam emitting means emitting laser beam towards said space and detecting means for detecting reflections of said emitted laser beams reflected from said space, wherein

the calibration unit comprises at least a transparent calibration chamber having same gas component as to be determined inside the space, and a reflector,
the laser beam emitting means and detecting means are arranged so to emit and receive beams in an angle so that the focus of the laser spot locates between said laser emitting means and detecting means and outside the line connecting said laser emitting means and detecting means at the same position in relation to said detecting unit during the measuring process,
wherein
said detecting unit and a calibration unit are configured to be moved in relation to each other for a calibration purpose so that said laser beam travels through said chamber and the focus spot hits the reflector of the calibration unit, whereupon the detecting means is focused essentially to said focus spot and configured to image said reflected beam, and
said detecting unit is configured to be moved towards and/or away said space for a determining purpose of the existence of the interest gas component so that said focus spot sequentially hits the surfaces or interfaces of the said space.

2 more elements

A method for non-invasively determining existence of a gas component of interest inside a space, wherein in the method a laser beam is emitted towards said space and reflections from said space are detected, wherein

the laser beams are emitted and reflected beams are received in an angle so that the focus of the laser spot locates between said laser emitting means and detecting means and outside the line connecting laser emitting means and detecting means at the same position during the measuring process in relation to a detecting unit comprising said laser emitting means and detecting means,
wherein
the detecting unit and a calibration unit are moved in relation to each other for a calibration purpose so that said laser beam travels through a transparent calibration chamber of the calibration unit and the focus spot hits the reflector of the calibration unit, whereupon the detecting means is focused essentially to said focus spot and images said reflected beam, wherein the calibration chamber comprises same gas component as to be determined inside the space and
moving the detecting unit towards and/or away said space for a determining purpose of the existence of the interest gas component so that said focus spot sequentially hits the surfaces or interfaces of the said space.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/593,195Filed 9 Jan 2015 · us provisional application
Priority: 15 Jan 2014
Published: US 2015/0198499 A116 Jul 2015
Granted: 19 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01N 33/0006
Gaseous mixtures, e.g. polluted air: calibrating gas analysers
G01M 3/007
Investigating fluid-tightness of structures: leak detector calibration, standard leaks
G01M 3/207
Using special tracer materials, e.g. dye, fluorescent material, radioactive material: calibration arrangements
G01M 3/226
For pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators: for containers, e.g. radiators