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GAS CONCENTRATION CALCULATION DEVICE AND GAS CONCENTRATION MEASUREMENT MODULE

  • US 20130003046A1
  • Filed: 02/14/2011
  • Published: 01/03/2013
  • Est. Priority Date: 02/16/2010
  • Status: Active Grant
First Claim
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1. A gas concentration calculating device including a gas concentration measuring module and a gas concentration calculating module and configured to calculate a concentration of a target gas,wherein the gas concentration measuring module comprises:

  • a gas cell configured to form an introduction space into which the target gas is introduced;

    a light source disposed at one end of the gas cell;

    a reflection switching unit disposed at the one end or the other end of the gas cell to reflect or transmit light emitted from the light source;

    a reflecting unit configured to reflect light transmitted through the reflection switching unit;

    a comparison gas cell, in which a predetermined comparison gas is hermetically enclosed, disposed on an optical path of light transmitted through the reflection switching unit; and

    a light receiving unit disposed at the other end of the gas cell and configured to receive light emitted from the light source and reflected by the reflection switching unit and light emitted from the light source, transmitted through the reflection switching unit, passing through the comparison gas cell and reflected by the reflecting unit, andwherein the gas concentration calculating module calculates the concentration of the target gas based on received light energy values of the light receiving unit in each case in which light is reflected or transmitted by the reflection switching unit.

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