KR101623490B1 - Apparatus and method for measuring gas using reflected infrared detector measuring with extensive of poison gas, and computer-readable recording medium with program therefor - Google Patents

Abstract

The present invention provides an apparatus and a method to measure a gas using a reflective infrared detector which is suitably used to measure a toxic gas over a broad area. The apparatus and method are capable of monitoring a relatively broad area when compared to apparatuses and methods using a semiconductor sensor or a nondispersive infrared system, by using a reflective system in which an infrared detector and a light source are arranged at a predetermined angle. The apparatus comprises: an infrared light source which emits an infrared ray in a pulsed (flickering) manner; a filter-based infrared detector which detects a reflected infrared ray of the infrared ray emitted from the infrared light source to detect a chemical gas; a first adjuster fixated to the infrared light source to adjust an emission angle at which the infrared ray is emitted from the infrared light source; a second adjuster fixated to the infrared detector to adjust the detection angle of the infrared detector at which the reflected infrared ray is detected; and a controller which controls the emission angle and the detection angle adjusted by the first adjuster and the second adjuster based on the reflection angle between the infrared light source, the infrared detector, and the measured distance, and also controls the infrared ray emitted from the infrared light source such that the infrared ray flickers in a pulsed pattern.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas measuring apparatus and method using a reflection type infrared detector for measuring a wide range of toxic gases, and a computer-readable recording medium storing a program for executing the method. , and computer-readable recording medium with program therefor}

[0001] The present invention relates to an active gas measuring apparatus and method, which is a technique using both an infrared detector and an infrared light source, and more particularly, to a gas measuring apparatus and method using an infrared sensor and a light source in a reflection- And more particularly, to a gas measuring apparatus and method using a reflection type infrared detector for measuring a wide range of toxic gas, which can monitor a relatively wide area in real time, unlike a non-dispersion infrared system.

Conventional attachment sensors generally measure a single gas component and mainly use semiconductor type heating sensors as carbon monoxide and carbon dioxide sensors.

However, since the semiconductor heating sensor has a very limited measuring range, it requires a very large number of semiconductor sensors in order to measure a wide range. In particular, if the analyzing gas is not directly injected into a sensor or a separate gas cell, If the gas is not diffused to the periphery, it is difficult to measure, it can be measured after damage has occurred, and there is also a risk of malfunction.

For example, since carbon dioxide is heavier than air, it can not be measured at all because it is moved to the bottom when it leaks, and the sensor for measuring the propane is also installed on the ceiling. In many cases.

Due to these problems, there is a limit to effective gas measurement even when noxious gas or explosive gas is leaked.

In the case of a non-dispersive infrared sensor, optical measurement is possible. However, since a separate pump is used to sample the gas, it is limited to measurement of a local site. In order to solve this problem, there is a method of injecting a sample using a waveguide. However, since the waveguide must be installed in a straight line, it is not easy to use it on a curved surface or the like.

In the case of an active open-path FT-IR spectrometer using a Fourier transform interferometer and a light source, gas generated in the large space can be measured at a distance, but the size is large and the price per one is very high Therefore, there is a disadvantage that it is difficult to use it universally. In particular, this technology is used for basic research and limited use by experts at some researchers.

Korea Open Patent No. 2011-0022099 (Open date: March 07, 2011): Simultaneous measurement of scattered light in air Korean Patent No. 10-0186272 (December 29, 1998): Infrared spectroscopic analysis method of gas and apparatus used therein

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a method of measuring infrared light reflected from an atmospheric gas using an infrared detector and a reflective method using a light source at a predetermined angle, The present invention provides a gas measuring apparatus and method using a reflection type infrared ray detector for measuring a wide range of toxic gas, which can monitor a relatively wide area in real time.

Other objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

According to another aspect of the present invention, there is provided a gas measuring apparatus using a reflection type infrared ray detector for measuring a wide range of toxic gases, comprising: an infrared light source unit for emitting infrared light in a pulsating manner at a long distance; A first control unit fixed to the infrared light source unit and controlling an irradiation angle of infrared light radiated from the infrared light source unit; and a control unit for controlling the irradiation angle of the infrared light emitted from the infrared light source unit, A second adjusting unit fixed to the infrared ray detecting unit and adjusting the detection angle of the infrared ray detecting unit to detect the infrared ray reflected and reflected from the infrared ray source unit and a second adjusting unit fixing the adjusting angle of the first adjusting unit and the second adjusting unit to the infrared ray source unit, Based on the reflection angle and the measurement distance with respect to the infrared ray detection unit, The infrared light irradiated from the infrared light source may consists of a controller for controlling the pulse type (flickering).

Preferably, the infrared light source unit includes: an infrared ray bulb that emits infrared light; a reflector that collects infrared light emitted from the infrared ray bulb at a central portion so that infrared light is radiated at a long distance; a power cable that transmits source power from the outside; And an electric power bridge for fixing an infrared lamp composed of an infrared ray lamp and a reflector to a main body of the gas measuring device and for applying a source power transmitted from the power cable to the infrared ray lamp.

Preferably, the infrared ray bulb uses a thermal emitter or a quantum emitter.

Preferably, the infrared ray detector includes at least one reflection type infrared ray detector of an optical filter type using a detection wavelength for each component, and the reflection type infrared ray detector is fixed to the body of the gas measurement device, And an electric bridge for transmitting the electric power.

Preferably, the infrared detector is a selected wavelength band for four noxious gases, wherein at least two optical filters are selected, wherein CH4 is 3.3 m, HC is 3.4 m, CO is 4.6 m, and CO2 is 4, A thermopile detector used at a short distance as a detection element, and a pyroelectric detector used at a remote location.

Preferably, the control unit includes an A / D conversion unit for detecting an electrical signal in the infrared detection unit and converting the detected electrical signal into a digital signal in an analog signal, and an A / D conversion unit for converting an adjustment angle of the first adjustment unit and the second adjustment unit, A control unit for controlling the light source unit based on a reflection angle and a distance measured by the infrared ray detection unit, a light source control unit for controlling the pulse light by switching the power source to be irradiated with the infrared light emitted from the infrared light source unit, And a wireless communication unit for transmitting information to the computer data management unit through wireless communication.

Preferably, the wireless communication is wireless communication using Bluetooth communication.

Preferably, the first adjusting unit and the second adjusting unit adjust the reflection angle of the irradiation angle and the detection angle of the infrared light source unit and the infrared ray detection unit to be close to each other, and the reflection angle is set at least 30 degrees .

Preferably, the infrared light source unit 100 and the infrared ray detection unit 200 are installed at a distance from each other, and the reflection angle is set to at least 20 degrees for the measurement of the gas at a long distance.

The reflection plate may further include at least one of aluminum and gold capable of reflecting infrared rays. The reflection plate may include at least one of aluminum and gold capable of reflecting infrared rays, and the reflector may reflect at least one of infrared Is coated.

Preferably, the infrared light source unit and the infrared ray detection unit are integrally mounted in one housing and are of a reflective type. The angle of the infrared ray source unit and the infrared ray detection unit is 45 degrees with respect to the center of the front face, So that the angle of the angle and the angle of the detection angle can be changed.

According to another aspect of the present invention, there is provided a gas measuring method using a reflection type infrared ray detector for measuring a wide range of toxic gases, comprising the steps of: irradiating infrared rays emitted from an infrared ray source part in a pulsed manner A step of detecting a chemical species gas by detecting infrared light reflected by the infrared light source unit, detecting an irradiation angle of the infrared light irradiated from the infrared light source unit, and detecting infrared light irradiated and reflected from the infrared light source unit And adjusting the measurement distance and the measurement range through the first adjustment unit and the second adjustment unit based on the reflection angle and the measurement distance of the infrared ray detection unit with respect to the infrared ray light source unit and the infrared ray detection unit.

A first adjusting unit and a second adjusting unit for adjusting a reflection angle of an irradiation angle and a detection angle of the infrared light source unit and the infrared ray detecting unit to a minimum, And reducing the measurement distance as the angle is widened, thereby reducing interference caused by other materials.

Preferably, the distance between the first adjusting unit and the second adjusting unit for adjusting the angle of reflection of the irradiation angle and the detection angle of the infrared light source unit and the infrared ray detecting unit is set to a predetermined distance, The method comprising the steps of:

Preferably, the gas information detected by the infrared ray detecting unit is transmitted to the data managing unit in real time through wireless communication through the wireless communication unit, so that the data managing unit enables real-time monitoring.

As described above, the gas measuring apparatus and method using the reflection type infrared ray detector for measuring a wide range of toxic gas according to the present invention have the following effects.

First, unlike conventional semiconductor sensors or nondispersive infrared systems, a relatively wide area can be monitored in real time.

Second, the infrared light source is pulse-controlled through the control unit to suppress the heat generation of the infrared light source and ensure durability.

Thirdly, since the gas information detected by the infrared ray detecting unit is transmitted to a data management unit (not shown) such as a computer through wireless communication, the application of such wireless communication can have a very simple effect on the field installation.

Fourth, it can be applied to the fields where there is a risk of leakage of factories, multi-use facilities, etc., by developing low-cost technology while having characteristics of active open-type infrared spectroscope.

1A and 1B are diagrams showing a configuration of a gas measuring apparatus using a reflection type infrared ray detector for measuring a wide range of toxic gas according to an embodiment of the present invention
Fig. 2 is a block diagram showing the configuration of the infrared light source unit in Fig.
FIG. 3 is a block diagram showing the configuration of the infrared ray detecting unit in FIG.
FIG. 4 is a block diagram showing the configuration of the control unit in FIG.
FIG. 5 is a schematic view showing a range of a specific reflection angle with respect to a near region of an infrared ray detecting unit and an infrared ray light source unit in a gas measuring apparatus using an active-based reflection type infrared ray detector in order to widely measure a gas leakage position.
6 is a schematic view showing a range of a specific reflection angle with respect to a distance of an infrared ray detecting unit and an infrared ray light source in a gas measuring apparatus using an active based reflection type infrared ray detector in order to widely measure a gas leak position.
7 is a schematic view of a reflection plate for determining a reflection angle and a measurement distance of an infrared ray detecting unit and an infrared ray light source unit in a gas measuring apparatus using an active based reflection type infrared ray detector in order to widely measure a gas leak position.
FIGS. 8A and 8B are views showing an example in which a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention is installed in a building environment
FIGS. 9A and 9B illustrate an embodiment of a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention,
10 is a graph showing CO2 (carbon dioxide) gas data measured by a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention
FIG. 11 is a graph showing a calibration curve using the measured data of FIG. 10
12 is a graph showing a calibration curve of low CO2 (carbon dioxide) concentration (10, 50, 100 ppm) measured by a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention

Other objects, features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a gas measuring apparatus and method using a reflection type infrared ray detector for measuring a wide range of toxic gas according to the present invention will now be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. It is provided to let you know. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Prior to the explanation, the infrared light having a long wavelength is basically relatively difficult to reflect light as compared with a visible light having a short wavelength. Especially, since the degree of reflection is weaker than that of visible light, the angle of light between the infrared light source and the infrared detector is very important. In this specification, in order to construct a reflection type light source and a detector, an infrared ray source and a detector are configured so that the angles of the infrared ray source and the detector are the same as each other at a certain distance, and then the optimum infrared ray receiving efficiency according to the angle is experimentally confirmed.

1A and 1B are block diagrams showing a configuration of a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention.

As shown in FIGS. 1A and 1B, an infrared light source 100 for emitting infrared light in a pulsed manner (blinking) to a long distance, and an infrared light source 100 for detecting infrared light reflected by the infrared light source 100 A first control unit 300 fixed to the infrared light source unit 100 and controlling an irradiation angle of infrared light radiated from the infrared light source unit 100, A second adjusting unit 400 which is fixed to the infrared ray detecting unit 200 and adjusts the detection angle of the infrared ray detecting unit 200 to detect the infrared ray irradiated and reflected by the infrared ray source unit 100, The infrared light source unit 100 and the infrared light source unit 100 are controlled based on the angle of reflection of the infrared light source unit 100 and the second adjustment unit 400 based on the reflection angle and the measurement distance of the infrared light source unit 100 and the infrared light detection unit 200, Light is configured to include a control unit 500 which controls a pulsed (flickering).

The control unit 500 transmits the gas information detected by the infrared ray detector 200 to the data management unit 600 such as a computer through wireless communication unit 520 through wireless communication. At this time, the wireless communication is performed wirelessly using Bluetooth communication, and the transmission to the data management unit can be monitored in real time through continuous transmission.

Fig. 2 is a configuration diagram showing the configuration of the infrared light source unit in Fig. 1. Fig.

2, the infrared light source unit 100 includes an infrared ray lamp 110 that emits infrared light, and an infrared light source 110 that collects infrared light emitted from the infrared ray lamp 110 at a central portion so that infrared light is radiated at a long distance A power supply cable 130 for transmitting a source power from the outside and an infrared lamp including the infrared ray lamp 110 and the reflection lamp 120 are fixed to the main body of the gas measuring device and the power cable 130 And a power bridge 140 for applying a source power to the infrared ray bulb 110.

The infrared ray bulb 110 uses a thermal emitter and a quantum emitter.

FIG. 3 is a block diagram showing the configuration of the infrared ray detecting unit in FIG.

3, the infrared ray detector 200 includes at least one reflection type infrared ray detector 210 of an optical filter 211 type using a detection wavelength for each component, and the reflection type infrared ray detector 210 And an electric bridge 220 which is fixed to the main body of the gas measuring device and transmits an electric signal detected through the optical filter 211.

At this time, the infrared ray detector 200 absorbs CO2 in the five frequency bands in the infrared region, and 2526 (4.3) and 3703 (2.7) when five frequency bands are expressed in cm ^-1 (wavelength region, , And the optical filter 211 is selected by selecting 2526 (4.3) which can avoid a clear absorption and interference, and is 5000 (2.0), 6250 (1.6), and 7143 (1.4)

The infrared detector 200 is a selected wavelength band for four harmful gases, and the optical filter is configured by selecting CH4 as 3.3 탆, HC as 3.4 탆, CO as 4.6 탆, and CO2 as 4,3 탆. In addition to the optical filter, a thermopile detector and a pyroelectrical detector are both used as the detection element of the infrared detector 200. The thermopile detector is used at a short distance and the pyroelectric detector is used at a long distance. Or two or a combination of the two.

FIG. 4 is a block diagram showing the configuration of the control unit in FIG.

4, the control unit 500 includes an A / D conversion unit 510 for detecting an electrical signal in the infrared detection unit 200 and converting the detected electrical signal into an analog signal, An adjustment control unit 520 for controlling an adjustment angle of the first adjustment unit 300 and the second adjustment unit 400 based on a reflection angle and a measurement distance from the infrared light source unit 100 and the infrared ray detection unit 200, A light source control unit 530 for controlling the infrared light irradiated from the light source unit 100 through a switching of a power source to be applied thereto, and a data management unit 530 for wirelessly communicating the gas information detected by the infrared ray detection unit 200 And a wireless communication unit 540. [ At this time, the wireless communication is performed wirelessly using Bluetooth communication, and the transmission to the data management unit can be monitored in real time through continuous transmission.

1A and 1B, in the case of the gas measuring apparatus using the active-based reflection type infrared detector, the most important part is the reflection angle of the infrared ray detector 200 and the infrared ray light source 100, The measurement distance and range are different according to the measurement distance and the measurement range, so that it can be applied to various environments of actual buildings.

5 is a schematic view showing a range of a specific reflection angle with respect to a near point of an infrared ray detecting unit and an infrared ray light source in a gas measuring apparatus using an active based reflection type infrared ray detector in order to widely measure a gas leakage position.

As shown in FIG. 5, the first adjusting unit 300 and the second adjusting unit 300 adjust the reflection angles of the irradiation angle and the detection angle of the infrared light source unit 100 and the infrared ray detection unit 200, respectively, 400) as close as possible. At this time, the reflection angle is set to be at least 30 ㅀ or more, so that the measurement distance can be reduced as the angle is widened, thereby minimizing interference by other substances.

6 is a schematic view showing a range of a specific reflection angle with respect to a distance of an infrared ray detecting unit and an infrared ray light source in a gas measuring apparatus using an active-based reflection type infrared ray detector in order to widely measure a gas leakage position.

As shown in FIG. 6, the reflection angle is a method of measuring a distance, and the infrared light source unit 100 and the infrared ray detection unit 200 are installed at a distance from each other, 2 adjustment unit 400 so that a wider range (range) can be measured. At this time, the distance is set to 20 degrees or more, so that a larger area can be measured.

7 is a schematic view of a reflection plate for determining a reflection angle and a measurement distance of an infrared ray detection unit and an infrared ray light source unit in a gas measurement apparatus using an active-based reflection type infrared ray detector in order to widely measure a gas leakage position.

As shown in Fig. 7, the infrared wavelength can not be visually confirmed, unlike the visible light ray. In order to determine the reflection angle and the measurement distance, a reflection plate is used. The reflective plate 700 used in this case uses aluminum and gold coated plates capable of infrared reflection. For reference, Ni-Cr and the like are excluded because they hardly reflect infrared rays. By using the reflector 700, the measurement distance and the reflection angle can be determined with the reflectance without looking at the eye. For reference, the actual product does not need a reflector, and the detector detects the reflected infrared light from the atmospheric gas.

As shown in FIGS. 8A and 8B, the gas measuring apparatus using the reflection type infrared ray detector for measuring a wide range of toxic gas according to the present invention constructed as described above can be installed in various building environments through wireless communication. It can be installed on any part of the building using various brackets.

As shown in FIGS. 9A and 9B, the gas measuring apparatus using the reflection type infrared ray detector for measuring a wide range of toxic gas includes a case in which the infrared ray source unit 100 and the infrared ray detection unit 200 are integrally mounted in one housing And the angle between the infrared light source unit 100 and the infrared ray detector 200 is set to 45 degrees with respect to the center of the front face. The angle can be adjusted according to the distance to be measured by designing to move the rounds 410 and 310 so that the angle between the infrared light source unit 100 and the infrared ray detector 200 can be changed. The generated gas can be monitored in real time by pressing the button 230 formed on the front surface of the housing.

10 is a graph showing CO2 (carbon dioxide) gas data measured by a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gases according to an embodiment of the present invention.

This is the data measured by exposing the CO2 standard gas around the gas measuring device. That is, as a result of testing 10, 50, 100, 1000, 5000 ppm of CO2 around the gas measuring device, the Y axis indicates the intensity of the signal (proportional to the concentration) and the X axis indicates the time.

As shown in FIG. 10, measurement was made by randomly leaking a high concentration from a low concentration with time, and it can be confirmed that the intensity of the signal increases as the concentration of CO 2 increases.

11 is a graph showing a calibration curve using the measured data of FIG.

As shown in Fig. 11, the calibration curve using the measured data shows a good linearity with a correlation coefficient of 0.98 between the concentration of 100, 1000, and 5000 ppm and the signal intensity. Even though the correlation coefficient is a reflection type, high linearity can be confirmed, and it can be understood that the accurate measurement of the actually generated gas is possible.

12 is a graph showing a calibration curve of a low concentration (10, 50, 100 ppm) of CO2 (carbon dioxide) measured by a gas measuring apparatus using a reflection type infrared detector for measuring a wide range of toxic gas according to an embodiment of the present invention.

As shown in FIG. 12, it can be seen that a high correlation coefficient of 0.9944 is exhibited in the reflection measurement even in a low concentration region, and accurate measurement is possible.

Meanwhile, the embodiment of the present invention can be made into a program that can be executed in a computer. That is, the various steps involved in the method according to the present invention may be stored in a computer readable recording medium. The medium may be a magnetic storage medium such as a ROM, a floppy disk, a hard disk, etc., an optical reading medium such as CD-ROM or DVD, a digital storage medium such as a USB memory, XD), etc.) and carrier waves (e.g., transmission over the Internet).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications may be made without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (16)

An infrared light source unit for emitting infrared light in a long distance pulse (flickering) in order to suppress the heat generation of the infrared light source and ensure the internal property,
A filter-based infrared ray detecting unit for detecting infrared ray light reflected at a point (A) intersecting the infrared ray irradiated from the infrared ray source unit to detect a chemical species gas;
A first adjustment unit fixed to the infrared light source unit to adjust an irradiation angle of infrared light radiated from the infrared light source unit,
A second adjusting unit fixed to the infrared ray detecting unit to adjust the detection angle of the infrared ray detecting unit to detect the infrared ray irradiated and reflected by the infrared ray source unit;
The distance between the infrared ray and the infrared ray detecting unit is adjusted by controlling the angle of the first adjusting unit and the second adjusting unit on the basis of the reflection angle and the measuring distance between the infrared ray source unit and the infrared ray detecting unit, And a control unit for controlling the infrared light emitted from the light source unit to be pulsed (flickering). The apparatus of claim 1, wherein the infrared light source unit
An infrared ray lamp that emits infrared light,
A reflector for collecting infrared light emitted from the infrared ray bulb at a central portion so that infrared light is radiated at a long distance,
A power cable for transmitting a source power from the outside,
And a power bridge for fixing an infrared lamp composed of the infrared lamp and the reflector to the main body of the gas measuring device and for applying a source power transmitted from the power cable to the infrared lamp. 3. The method of claim 2,
Characterized in that the infrared bulb uses a thermal emitter or a quantum emitter. The apparatus of claim 1, wherein the infrared detector
At least one reflection type infrared detector of an optical filter type using a detection wavelength for each component,
And an electric bridge for fixing the reflection type infrared ray detector to the main body of the gas measurement device and transmitting the electric signal detected through the optical filter. The apparatus of claim 1, wherein the infrared detector
At least two optical filters selected from the group consisting of CH4, HC, and HC of 3.3 탆, 3.4 탆, 4.6 탆 and 4,3 탆, respectively,
Wherein at least one of a thermopile detector used at a short distance and a pyroelectric detector used at a distance is used as a detection element. The apparatus of claim 1, wherein the control unit
An A / D converter for detecting an electrical signal in the infrared detector and converting the detected electrical signal into a digital signal from an analog signal;
An adjustment control unit for controlling an adjustment angle of the first adjustment unit and the second adjustment unit based on a reflection angle and a measurement distance between the infrared light source unit and the infrared ray detection unit,
A light source control unit for pulse-controlling the infrared light irradiated from the infrared light source unit through switching of a power source to which the infrared light is applied,
And a wireless communication unit for transmitting the gas information detected by the infrared detection unit to the computer data management unit by wireless communication. The method according to claim 6,
Wherein the wireless communication is wireless communication using Bluetooth communication. The method according to claim 1,
A first adjusting unit and a second adjusting unit for adjusting the angle of reflection of the irradiation angle and the detection angle of the infrared light source unit and the infrared ray detecting unit are installed so as to be close to each other and the reflection angle is set to a minimum of 30 degrees or more Wherein the gas measuring device is a gas measuring device. The method according to claim 1,
Wherein the infrared light source unit (100) and the infrared ray detection unit (200) are provided at a distance from each other, and the reflection angle is set to a minimum of 20 degrees or more for a long distance gas measurement. delete The method according to claim 1,
The infrared light source unit and the infrared ray detection unit are integrally mounted in a single housing,
And the angle of the infrared light source unit and the infrared ray detection unit is set to 45 degrees with respect to the center of the front face so that the angle of the irradiation angle and the detection angle of the infrared ray source unit and the infrared ray detection unit can be changed. Device. Irradiating the infrared light emitted from the infrared light source part at a long distance in a pulsed manner (flicker) in order to suppress the heat generation of the infrared light source and ensure the internal property,
Detecting infrared light reflected at a point (A) intersecting the infrared light emitted from the infrared light source unit to detect a chemical species gas;
A first adjusting unit for adjusting a detection angle of the infrared ray detecting unit based on a reflection angle and a measurement distance of the infrared ray light source unit and the infrared ray detecting unit to detect the irradiation angle of the infrared ray irradiated from the infrared ray source unit and the infrared ray reflected and reflected by the infrared ray source unit, And adjusting the distance of the point (A) where the infrared ray and the infrared ray detection unit are exchanged by controlling the measurement distance and the measurement range through the second adjustment unit. 13. The method of claim 12,
A first adjusting unit and a second adjusting unit for adjusting the angle of reflection of the irradiation angle and the detection angle of the infrared light source unit and the infrared ray detecting unit,
And setting the angle of reflection to be at least 30 degrees or more so that the measurement distance can be reduced as the angle increases, thereby reducing interference by other materials. 13. The method of claim 12,
A first adjusting unit and a second adjusting unit for adjusting the angle of reflection of the irradiation angle and the detection angle of the infrared light source unit and the infrared ray detecting unit are separated from each other by a predetermined distance,
And setting the angle of reflection to at least 20 degrees. 13. The method of claim 12,
The gas information detected by the infrared detection unit is transmitted to the data management unit through the wireless communication unit in real time so that the data management unit can monitor the gas in real time. A computer-readable recording medium storing a program for executing each step of the gas measurement method according to any one of claims 12 to 15.

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