CN115046952A - Detection signal processing method of element analyzer and gas detection device thereof - Google Patents
Detection signal processing method of element analyzer and gas detection device thereof Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 111
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 74
- 238000011897 real-time detection Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 87
- 238000000034 method Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000012159 carrier gas Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 230000031700 light absorption Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 230000008033 biological extinction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
- G01N21/274—Calibration, base line adjustment, drift correction
- G01N21/276—Calibration, base line adjustment, drift correction with alternation of sample and standard in optical path
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention discloses a detection signal processing method of an element analysis instrument, which comprises the following steps: 1. a reference channel is added on the basis of a detection channel of an element analysis instrument; 2. the detection channel baseline value was labeled BC0 and the reference channel baseline value was labeled BR 0; 3. dividing each reference channel value RS [ i ] by a reference channel baseline value BR0 to obtain a variation coefficient KS [ i ], and then dividing a detection channel baseline value BC0 by the variation coefficient KS [ i ] to obtain a real-time detection channel baseline value BKS [ i ]; 4. subtracting a real-time detection channel baseline value BKS [ i ] from the real-time read detection channel value CS [ i ] to obtain a real-time signal integral value CI [ i ]; 5. and accumulating the values obtained by checking a linear table of each real-time signal integral value CI [ i ], and dividing by the weight of the sample to obtain the element content value in the sample. Also discloses a gas detection device for realizing the detection signal processing method of the element analysis instrument. The invention greatly improves the detection precision.
Description
Technical Field
The invention relates to the technical field of elemental analyzers, in particular to a detection signal processing method of an elemental analyzer and a gas detection device thereof.
Background
The element analyzer is used for analyzing the content of elements such as carbon, sulfur, hydrogen and the like in a material, and the elements such as carbon, sulfur, hydrogen and the like in the detected material are changed into gaseous substances (CO \ CO) by means of heating and the like 2 \SO 2 \H 2 And O), detecting the concentration of the gaseous substances, accumulating and integrating to obtain the total amount of the carbon, sulfur and hydrogen elements, and dividing by the mass of the detected material before heating to obtain the percentage content of the carbon, sulfur and hydrogen.
Referring to fig. 1, there is shown a conventional gas detecting apparatus for an elemental analyzer, which includes an analysis gas chamber 10, an infrared light source 20, an infrared sensor 30, and a filter 40. The analysis gas cell 10 has a gas input 11 and a gas output 12, and the gas input 11 and the gas output 12 of the analysis gas cell 10 are directly connected to the external atmosphere. An infrared light source 20 is disposed at one side of the analysis gas cell 10, and is used for infrared irradiation of the gas to be detected in the analysis gas cell 10. An infrared sensor 30 is arranged on the other side of the analysis gas cell 10 for detecting the gas concentration within the analysis gas cell 10. The optical filter 40 is located between the analysis gas cell 10 and the infrared sensor 40. Intensity of infrared light I emitted from infrared light source 20 0 The infrared sensor 30 receives the light intensity I reduced after the detected gas absorbs 1 Then degree of extinction I 1 /I 0 Reflecting the concentration of the gas being detected.
The gas detection device adopts NDIR infrared optical principle to detect CO \ CO by using Lambert beer law 2 \SO 2 \H 2 The concentration of O gas, the temperature of the gas to be detected impacting the infrared detection component and the change of the infrared detection component (such as the drift of an infrared light source, the change of a light absorption coefficient caused by the pollution of an infrared light path) and other factors influence the use environment of the instrument, which can cause the drift of the signal of the infrared detection component, wherein the drift comprises a baseline drift and a span drift.
For baseline wander, the current technology is to introduce pure gas (usually carrier gas) into an infrared analysis gas chamber before each sample analysis, record a stable sensor signal value, take the average value as the baseline value BC0 of the sample analysis, and subtract the fixed baseline value BC0 from each detection signal value in the analysis process to obtain the actual detection value. This conventional method does eliminate most of the baseline drift, but because this baseline value is performed before the sample is analyzed, actually, when the sample is analyzed, because the mixed gas of the sample release gas and the carrier gas is in the process of changing in temperature, pressure and flow rate all the time when passing through the gas chamber, it is different from the pure gas (usually the carrier gas) introduced in a steady state, and the analysis time is generally more than 20 seconds, during this period, there are many factors such as atmospheric pressure, ambient temperature, the temperature of the detected gas impacting the infrared detection component and the change of the infrared detection component itself (such as drift of the infrared light source, change of the light absorption coefficient caused by pollution of the infrared light path), which cannot be guaranteed to be the same as that when detecting BC0, thereby causing drift of the detection result.
The current technology can limit the change in a very small range through technical means such as voltage stabilization, steady flow, constant temperature of an air chamber and the like, but still certain influence is caused on the accuracy and stability of an analysis result, the accuracy of equipment can be ensured by generally correcting every shift (8 hours), the edge result must be corrected at any time, the rapid detection performance of an instrument cannot be fully exerted, and the maximum difference between the technical indexes of a domestic analysis instrument and an international advanced analysis instrument is also achieved.
To this end, the applicant has sought, through useful research and research, a solution to the above-mentioned problems, in the context of which the technical solutions to be described below have been made.
Disclosure of Invention
One of the technical problems to be solved by the present invention is: the method for processing the detection signal of the element analysis instrument reduces the analysis result error caused by the baseline fluctuation.
The second technical problem to be solved by the present invention is: a gas detection device for realizing the detection signal processing method of the element analyzer is provided.
A detection signal processing method of an elemental analyzer as a first aspect of the present invention includes the steps of:
step S10, adding a reference channel based on the detection channel of the element analyzer, the sampling frequency of the reference channel is synchronous with the sampling frequency of the detection channel;
step S20, before the sample analysis begins, introducing pure gas into the analysis gas chamber of the element analysis instrument, when the signals of the detection channel and the reference channel are stable, respectively taking the average value of the signal values of a period of time as a baseline, marking the baseline value of the detection channel as BC0, and marking the baseline value of the reference channel as BR 0;
step S30, after the sample begins to be analyzed, dividing each reference channel value RS [ i ] by a reference channel baseline value BR0 to obtain a variation coefficient KS [ i ], and then dividing a detection channel baseline value BC0 by the variation coefficient KS [ i ] to obtain a real-time detection channel baseline value BKSt [ i ];
step S40, subtracting the real-time detection channel baseline value BKS [ i ] from the real-time read detection channel value CS [ i ] as a real-time signal integral value CI [ i ];
and step S50, after the sample analysis is finished, accumulating the values obtained by checking the linear table of each real-time signal integral value CI [ i ], and dividing the values by the weight of the sample to obtain the element content value in the sample.
A gas detection apparatus as a second aspect of the present invention for realizing the detection signal processing method of the element analysis instrument described above includes:
an analysis gas cell having a gas input and a gas output;
the infrared light source is arranged on one side of the analysis gas chamber and is used for carrying out infrared irradiation on the gas to be detected in the analysis gas chamber;
the detection channel infrared sensor is arranged on the other side of the analysis gas chamber and is used for detecting the gas concentration in the analysis gas chamber; and
the detection signal processing unit is connected with the detection channel infrared sensor and is used for processing a detection signal; it is characterized in that the preparation method is characterized in that,
the gas concentration analyzer also comprises a reference channel infrared sensor which is arranged at the other side of the analysis gas chamber and connected with the detection signal processing unit and is used for detecting the gas concentration in the analysis gas chamber.
In a preferred embodiment of the invention, a detection channel filter is arranged between the analysis gas cell and the detection channel infrared sensor.
In a preferred embodiment of the invention, a reference channel filter is arranged between the analysis gas cell and the reference channel infrared sensor.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention adds a reference channel (the sampling frequency is synchronous with the detection channel) on the basis of the existing single detection channel, because the reference channel uses the same infrared light source and the same optical channel as the detection channel to simultaneously detect the detected gas so as to ensure that all physical states are consistent with the detection channel as the physical basis of dynamic compensation, the detection signal wave band of the reference channel is absolutely not present in the sample gas and the carrier gas, and the wave band of 3.9 mu is generally adopted, the change of the detection channel directly reflects the signal change caused by the temperature, pressure and flow rate change in the sample analysis process, and the change is used for dynamically correcting the baseline of the detection channel in real time, so that the baseline of the detection channel is consistent with the actual signal change, and the consistency of the baseline and the fluctuation is ensured. The invention dynamically compensates the error of the analysis result caused by the base line fluctuation caused by the atmospheric pressure, the ambient temperature, the impact of the temperature of the detected gas on the infrared detection component and the change of the infrared detection component (such as the drift of an infrared light source and the change of a light absorption coefficient caused by the pollution of an infrared light path) in the sample analysis process, greatly improves the detection precision, simultaneously reduces the correction times of the instrument and improves the quick detection performance of the instrument.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic configuration diagram of a conventional gas detection apparatus for an element analyzer.
Fig. 2 is a schematic structural view of the gas detection device of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific drawings.
The invention relates to a detection signal processing method of an element analysis instrument, which comprises the following steps:
step S10, adding a reference channel based on the detection channel of the element analyzer, the sampling frequency of the reference channel is synchronous with the sampling frequency of the detection channel;
step S20, before the sample analysis starts, pure gas is firstly introduced into an analysis gas chamber of the element analysis instrument, when signals of a detection channel and a reference channel are stable, the average value of signal values of a period of time is respectively taken as a baseline, the baseline value of the detection channel is marked as BC0, and the baseline value of the reference channel is marked as BR 0;
step S30, after the sample begins to be analyzed, dividing each reference channel value RS [ i ] by a reference channel baseline value BR0 to obtain a variation coefficient KS [ i ], and then dividing a detection channel baseline value BC0 by the variation coefficient KS [ i ] to obtain a real-time detection channel baseline value BKS [ i ];
step S40, subtracting the real-time detection channel baseline value BKS [ i ] from the real-time read detection channel value CS [ i ] as a real-time signal integral value CI [ i ];
and step S50, after the sample analysis is finished, accumulating the values obtained by checking the linear table of each real-time signal integral value CI [ i ], and dividing the values by the weight of the sample to obtain the element content value in the sample.
The invention adds a reference channel (the sampling frequency is synchronous with the detection channel) on the basis of the existing single detection channel, because the reference channel uses the same infrared light source and the same optical channel as the detection channel to simultaneously detect the detected gas so as to ensure that all physical states are consistent with the detection channel as the physical basis of dynamic compensation, the detection signal wave band of the reference channel is absolutely not present in the sample gas and the carrier gas, and the wave band of 3.9 mu is generally adopted, the change of the detection channel directly reflects the signal change caused by the temperature, pressure and flow rate change in the sample analysis process, and the change is used for dynamically correcting the baseline of the detection channel in real time, so that the baseline of the detection channel is consistent with the actual signal change, and the consistency of the baseline and the fluctuation is ensured. The invention dynamically compensates the error of the analysis result caused by baseline fluctuation caused by the atmospheric pressure, the ambient temperature, the impact of the temperature of the detected gas on the infrared detection component and the change of the infrared detection component (such as the drift of an infrared light source and the change of a light absorption coefficient caused by the pollution of an infrared light path) in the sample analysis process, thereby greatly improving the detection precision.
On the same element analysis instrument, install traditional mode infrared detection air chamber and reference mode infrared detection air chamber simultaneously for two analysis air chamber environment and the gas pressure, the temperature that let in the air chamber are unanimous. Nine consecutive days of testing, 6 specimens were analyzed each time, and the daily average statistics were taken as follows. The long-term stability of the reference mode of the invention is significantly better than that of the conventional mode.
| Time | Reference mode at 35 ℃ | Conventional mode at 35 ℃ | Atmospheric pressure (hPa) |
| Day one | 1.33973 | 1.337366154 | 1022.7 |
| The next day | 1.33813 | 1.340826014 | 1019.8 |
| The third day | 1.34668 | 1.270047692 | 1019.7 |
| Day four | 1.33682 | 1.306636643 | 1017.7 |
| The fifth day | 1.31987 | 1.32986979 | 1031.6 |
| Day six | 1.33716 | 1.32281986 | 1026.7 |
| The seventh day | 1.330295 | 1.36511014 | 1034.7 |
| Day eight | 1.3254 | 1.329441958 | 1027.1 |
| Day nine | 1.32924 | 1.372355385 | 1020.3 |
| Mean value of | 1.333702778 | 1.330497071 | |
| Relative Standard Deviation (SD) | 0.006147706 | 0.022840363 | |
| Standard deviation of | 0.008199212 | 0.030389036 |
Even if the abnormal value of the conventional mode 1.27 on the third day is removed, the long-term stability advantage of the reference mode is still quite obvious, and the statistical results are as follows:
referring to fig. 2, there is shown a gas detection apparatus for implementing the method for processing a detection signal of an elemental analyzer according to the present invention, which includes an analysis gas cell 100, an infrared light source 200, a detection channel infrared sensor 300, a reference channel infrared sensor 400, a detection channel filter 500, a reference channel filter 600, and a detection signal processing unit (not shown).
The analysis gas cell 100 has a gas input 110 and a gas output 120, each of which is in communication with the external atmosphere. The detected sample enters a combustion furnace, simultaneously raw material gas is input, the detected sample is heated and oxidized in the combustion furnace to become related gaseous substances, such as carbon or oxygen element to become CO 2 CO released 2 The raw gas enters the analysis gas chamber 100 through the gas input end 110 under the driving of the raw gas, and is discharged through the gas output end 120 after the detection is finished.
An infrared light source 200 is disposed at one side of the analysis gas cell 100, and is used for infrared irradiation of the gas to be detected in the analysis gas cell 100.
A detection channel infrared sensor 300 is disposed at the other side of the analysis gas cell 100 for detecting the gas concentration in the analysis gas cell 100.
A reference channel infrared sensor 400 is disposed on the other side of the analysis gas cell 100 in parallel with the detection channel infrared sensor 300, which is used to detect the gas concentration within the analysis gas cell 100.
A detection channel filter 500 is disposed between the analysis gas cell 100 and the detection channel infrared sensor 300.
The detection signal processing unit is respectively connected with the detection channel infrared sensor 300 and the reference channel infrared sensor 400, and is used for acquiring detection signals acquired by the detection channel infrared sensor 300 and the reference channel infrared sensor 400 in real time and processing the acquired detection signals in real time.
Intensity I of infrared light emitted from infrared light source 200 0 The infrared sensor 300 of the detection channel receives the light intensity I reduced after the absorption of the detected gas 1 Then degree of extinction I 1 /I 0 Reflecting the concentration of the gas being detected. The reference channel infrared sensor 400 receives the light intensity I reduced after the detected gas absorbs 2 Will not be affected by the concentration of the gas being detected. Because the detected gas has no reaction in the wave band of the reference channel, the extinction degree I 2 /I 0 Only the change state of the physical quantity including the infrared light source and the analysis gas chamber is reflected, and the drift of the whole detection device can be compensated.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A detection signal processing method of an element analysis instrument is characterized by comprising the following steps:
step S10, adding a reference channel based on the detection channel of the element analyzer, the sampling frequency of the reference channel is synchronous with the sampling frequency of the detection channel;
step S20, before the sample analysis starts, pure gas is firstly introduced into an analysis gas chamber of the element analysis instrument, when signals of a detection channel and a reference channel are stable, the average value of signal values of a period of time is respectively taken as a baseline, the baseline value of the detection channel is marked as BC0, and the baseline value of the reference channel is marked as BR 0;
step S30, after the sample begins to be analyzed, dividing each reference channel value RS [ i ] by a reference channel baseline value BR0 to obtain a variation coefficient KS [ i ], and then dividing a detection channel baseline value BC0 by the variation coefficient KS [ i ] to obtain a real-time detection channel baseline value BKSt [ i ];
step S40, subtracting the real-time detection channel baseline value BKS [ i ] from the real-time read detection channel value CS [ i ] as a real-time signal integral value CI [ i ];
and step S50, after the sample analysis is finished, accumulating the values obtained by checking the linear table of each real-time signal integral value CI [ i ], and dividing the values by the weight of the sample to obtain the element content value in the sample.
2. A gas detection apparatus for implementing a detection signal processing method of an elemental analyzer according to claim 1, comprising:
an analysis gas cell having a gas input and a gas output;
the infrared light source is arranged on one side of the analysis gas chamber and is used for carrying out infrared irradiation on the gas to be detected in the analysis gas chamber;
the detection channel infrared sensor is arranged on the other side of the analysis gas chamber and is used for detecting the gas concentration in the analysis gas chamber; and
the detection signal processing unit is connected with the detection channel infrared sensor and is used for processing a detection signal; it is characterized in that the preparation method is characterized in that,
the gas concentration analyzer also comprises a reference channel infrared sensor which is arranged at the other side of the analysis gas chamber and connected with the detection signal processing unit and is used for detecting the gas concentration in the analysis gas chamber.
3. The gas detection device of claim 2, wherein a detection channel filter is disposed between the analysis gas cell and the detection channel infrared sensor.
4. The gas sensing device of claim 2, wherein a reference channel filter is disposed between the analysis gas cell and the reference channel infrared sensor.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100052691A (en) * | 2008-11-11 | 2010-05-20 | 한국표준과학연구원 | Measuring apparatus and method of multi gas pollutants using the ndir detector with multi gas filter |
| CN102809546A (en) * | 2012-08-21 | 2012-12-05 | 南京埃森环境技术有限公司 | Low-concentration flue gas infra-red analyzer and detection method |
| CN104713841A (en) * | 2015-02-09 | 2015-06-17 | 中国石油大学(华东) | Self-calibration analyzer design method and device |
| CN107036994A (en) * | 2017-05-25 | 2017-08-11 | 北京雪迪龙科技股份有限公司 | A kind of non-dispersion infrared gas analyzer of dynamic reference and the method for detecting gas concentration |
| CN209589768U (en) * | 2019-02-19 | 2019-11-05 | 河南郑大零醛屋环保科技有限公司 | A kind of indoor gas detection analysis instrument |
| CN112378873A (en) * | 2020-10-29 | 2021-02-19 | 湖北锐意自控系统有限公司 | Ultraviolet gas analysis method and ultraviolet gas analyzer |
| CN214066918U (en) * | 2020-10-29 | 2021-08-27 | 湖北锐意自控系统有限公司 | Ultraviolet gas analyzer |
-
2022
- 2022-05-23 CN CN202210564941.2A patent/CN115046952B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100052691A (en) * | 2008-11-11 | 2010-05-20 | 한국표준과학연구원 | Measuring apparatus and method of multi gas pollutants using the ndir detector with multi gas filter |
| CN102809546A (en) * | 2012-08-21 | 2012-12-05 | 南京埃森环境技术有限公司 | Low-concentration flue gas infra-red analyzer and detection method |
| CN104713841A (en) * | 2015-02-09 | 2015-06-17 | 中国石油大学(华东) | Self-calibration analyzer design method and device |
| CN107036994A (en) * | 2017-05-25 | 2017-08-11 | 北京雪迪龙科技股份有限公司 | A kind of non-dispersion infrared gas analyzer of dynamic reference and the method for detecting gas concentration |
| CN209589768U (en) * | 2019-02-19 | 2019-11-05 | 河南郑大零醛屋环保科技有限公司 | A kind of indoor gas detection analysis instrument |
| CN112378873A (en) * | 2020-10-29 | 2021-02-19 | 湖北锐意自控系统有限公司 | Ultraviolet gas analysis method and ultraviolet gas analyzer |
| CN214066918U (en) * | 2020-10-29 | 2021-08-27 | 湖北锐意自控系统有限公司 | Ultraviolet gas analyzer |
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