GAS CONCENTRATION CALCULATION DEVICE AND GAS CONCENTRATION MEASUREMENT MODULE
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A device includes a gas cell (10X) configured to form an introduction space (11X) into which a target gas is introduced, an infrared light source (20X) disposed at one end of the gas cell (10X), a modulation mirror (70X) disposed at one end of the gas cell (10X) and configured to reflect or transmit light emitted from the infrared light source (20X), a reflecting mirror (60X) configured to reflect light transmitted through the modulation mirror (70X), a saturated gas chamber (40X), in which a predetermined comparison gas is hermetically enclosed, disposed on an optical path of light transmitted through the modulation mirror (70X), a light receiving unit (30X) disposed at the other end of the gas cell (10X) and configured to receive light reflected by the modulation mirror (70X) and light transmitted through the modulation mirror (70X) and reflected by the reflecting mirror (60X) through the saturated gas chamber (40X), and a calculation circuit (3X) configured to calculate the concentration of the target gas based on received light energy values of the light receiving unit (30X) in each case in which light is reflected or transmitted by the modulation mirror (70X).
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Citations
32 Claims
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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, and wherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A gas concentration measuring module of a gas concentration calculating device configured to calculate a concentration of a target gas, the gas concentration measuring module comprising:
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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 for reflecting 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.
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14. 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 in the gas cell; a reflectance modulation unit disposed at one end of the gas cell and configured to electrically modulate a reflectance with respect to light emitted from the light source; and a light receiving unit disposed at the other end of the gas cell and configured to receive a direct light directly emitted from the light source and a reflection light emitted from the light source and reflected by the reflectance modulation unit, and wherein the gas concentration calculating module calculates the concentration of the target gas based on a ratio of received light energy values of the light receiving unit in each case in which the reflectance is electrically modulated by the reflectance modulation unit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A gas concentration measuring module of a gas concentration calculating device configured to calculate a concentration of a target gas, the gas concentration measuring module comprising:
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a gas cell configured to form an introduction space into which the target gas is introduced; a light source disposed in the gas cell; a reflectance modulation unit disposed at one end of the gas cell and configured to electrically modulate a reflectance with respect to light emitted from the light source; and a light receiving unit disposed at the other end of the gas cell and configured to receive a direct light directly emitted from the light source and a reflection light emitted from the light source and reflected by the reflectance modulation unit.
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23. 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 in the gas cell; a rotary mechanism disposed at one end of the gas cell and configured to reflect or transmit light emitted from the light source by rotation thereof; and a light receiving unit disposed at the other end of the gas cell and configured to receive a direct light directly emitted from the light source and a reflection light emitted from the light source and reflected by the rotary mechanism, and wherein the gas concentration calculating module calculates the concentration of the target gas based on a ratio of received light energy values of the light receiving unit in each case in which the light is reflected or transmitted by the rotary mechanism, and the rotary mechanism performs the rotation in a direction different from a direction of an optical path from the light source to the light receiving unit. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A gas concentration measuring module of a gas concentration calculating device configured to calculate a concentration of a target gas, the gas concentration measuring module comprising:
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a gas cell configured to form an introduction space into which the target gas is introduced; a light source disposed in the gas cell; a rotary mechanism disposed at one end of the gas cell and configured to reflect or transmit light emitted from the light source by rotation thereof; and a light receiving unit disposed at the other end of the gas cell and configured to receive a direct light directly emitted from the light source and a reflection light emitted from the light source and reflected by the rotary mechanism, wherein the rotary mechanism performs the rotation in a direction different from a direction of an optical path from the light source to the light receiving unit.
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Specification