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Method and device for measuring gas component concentration inside a glass unit

By applying a light beam on the surface of the glass unit and collecting the reflected or transmitted light beam, and using the change of the absorption spectrum line of the light beam to determine the gas component concentration, the problem of non-invasive measurement and multi-gap measurement in the existing technology is solved, and high accuracy and Sensitive gas component concentration measurements.

Active Publication Date: 2014-03-19
SPARKLIKE
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  • Claims
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AI Technical Summary

Problems solved by technology

Also, when at least one plate has a metal-coated surface, measurements cannot be done through the metal surface because fast alternating electric fields cannot penetrate the metal surface
Also, only one gap can be measured at a time

Method used

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Examples

Experimental program
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Embodiment Construction

[0064] Figures 1(a) and 1(b) relate to measurements and phenomena known from the prior art and discussed earlier in this paper.

[0065] Figures 2a-2e illustrate the principles of an exemplary measurement arrangement 200 for determining the concentration of gas components within a transparent structure, according to an advantageous embodiment of the invention.

[0066] According to an embodiment of the invention, an apparatus comprises a light source 201 for emitting at least one light beam towards a surface of an object, such as a glass unit 202 . The light source is advantageously a narrowband light source, which may for example be a Vertical Cavity Surface Emitting Laser (VCSEL). The wavelength of the emitted laser light can be controlled by the adjustable current source 203 via current, for example. According to an embodiment, the emitted laser beam 204 is modulated (eg, by WMS techniques) by introducing a modulation waveform to a current controller of the laser source. ...

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Abstract

A non-invasive method for determining a concentration of a gas component in a gas mixture contained in a spacing of a glass unit having at least two glass sheets spaced apart from each other and forming said spacing. One or more light beams is applied at an angle to the surface of said glass unit, wherein the wavelength of the emitted light beam is varied around or over the at least one absorption line of the interest gas component. The light beams transmitted through or reflected from at least one surface or interface locating at the opposite side of the spacing are collected by a detector and non-linear variations in the intensity of the t transmitted or reflected light beams over an absorption line of the interest gas is then component determined. The concentration of the gas component to be measured is determined based on said non-linear variations in the intensity.

Description

technical field [0001] The present invention relates to a method and apparatus for measuring the concentration of a gaseous component in a glass unit or any other similar transparent container of one or more individual chambers. Furthermore, the present invention relates to measuring the dimensions, laminations and metallic coatings of one or more individual chamber glass units or any other similar transparent containers. Background technique [0002] In the glass manufacturing process, sheets of glass (known as float glass) can be combined with different types of elements, such as coatings or tempered layers, to create glass panes with specific properties for different purposes. For example, insulated glass units IGUs are typically constructed using configurations with two or more glass sheets with closed gaps between the sheets, wherein the closed gaps are filled with a gas with low thermal conductivity, such as oxygen, Argon, xenon, krypton, nitrogen or mixtures of those...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39
CPCG01N21/39G01N21/031G01N21/55G01N21/61G01B11/06G01J3/443G01N2021/0396G01N21/67
Owner SPARKLIKE
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