CN114965319A - Gas parameter multidimensional detection system and measurement method based on absorption spectrum - Google Patents
Gas parameter multidimensional detection system and measurement method based on absorption spectrum Download PDFInfo
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Abstract
The invention relates to the technical field of laser absorption spectroscopy, in particular to a gas parameter multidimensional detection system and a measurement method based on absorption spectroscopy, which comprises a three-dimensional translation table module, a physical field generation module to be detected and a laser module; the W-axis rotating table is rotatably arranged on the bottom plate; the two groups of X-axis translation tables are arranged on the W-axis rotation table in a sliding mode, and mounting columns are vertically arranged on the two groups of X-axis translation tables; the Z-axis translation stage a and the Z-axis translation stage b are respectively arranged on the two groups of mounting columns in a sliding manner; the left supporting table and the right supporting table are respectively arranged on the Z-axis translation table b and the Z-axis translation table a; the laser emission module and the laser detector are respectively arranged on the left supporting table and the right supporting table; the bottom of the thermophysical field generating device is provided with a lifting platform. The invention can rapidly acquire the two-dimensional and three-dimensional gas thermal physical parameter distribution of the area to be measured. By adjusting the vertical height of the physical field generating device to be measured, more gas thermal physical parameter distributions in the vertical direction can be obtained.
Description
Technical Field
The invention relates to the technical field of laser absorption spectroscopy, in particular to a gas parameter multidimensional detection system and a gas parameter multidimensional measurement method based on absorption spectroscopy.
Background
The laser absorption spectroscopy technology has been widely applied to various fields such as atmospheric environment monitoring, industrial process monitoring, combustion diagnosis and the like as a non-invasive high-precision detection means. In the past decades, researchers have conducted measurement studies of gas flow temperature, component concentration in a single path based on laser absorption spectroscopy and reconstruction of thermophysical parameters such as gas flow temperature, component concentration, flow rate and pressure in conjunction with tomography.
At present, most of research works aiming at a non-uniform thermophysical field or a combustion field are to couple a plurality of lasers based on a TDLAS technology, divide the coupled lasers into parallel or irregular multi-path lasers through an optical fiber beam splitter, then pass through a region to be detected, obtain a plurality of spectral line absorption data in different directions by utilizing a plurality of photoelectric detectors, and realize the reconstruction and detection of two-dimensional thermophysical parameters of the region to be detected based on a tomography algorithm. However, the measurement method has the problems of complex experimental system, high cost, limited optical path quantity and resolution ratio by the sizes of the laser collimator and the photoelectric detector, weakened light intensity of the split laser and the like. In order to solve the problems, researchers change laser from a point light source to a surface light source through the transformation of an optical lens, and realize the three-dimensional reconstruction of the related thermal physical parameters of the combustion field by combining a two-dimensional infrared sensor and measuring the to-be-measured area in multiple angles. However, the detection method fixes the laser and the sensor, changes the angle of the burner to obtain the absorption spectrum information of different directions, can measure the size of the combustion field to be only about 25mm multiplied by 25mm, is not beneficial to being applied to the combustion field of different scales, and the two-dimensional infrared sensor has high price at present and insufficient spectrum and scanning resolution, thereby influencing the wide application of the technology. Therefore, a universal, high-precision and low-cost three-dimensional reconstruction technical scheme and equipment for thermal physical parameters such as airflow temperature, component concentration and the like are not available at present.
Disclosure of Invention
The invention aims to provide a gas thermal physical parameter multi-dimensional detection system and a gas thermal physical parameter multi-dimensional measurement method based on a three-dimensional translation stage and a laser absorption spectrum tomography technology, which can realize two-dimensional or three-dimensional parameter reconstruction on an airflow thermal physical field.
On one hand, the invention provides a gas parameter multidimensional detection system based on absorption spectrum, which comprises a three-dimensional translation table module, a thermal physical field generation module to be detected and a laser module; the three-dimensional translation table module comprises a W-axis rotation table, an X-axis translation table, a right supporting table, a Z-axis translation table a, a Z-axis translation table b and a left supporting table; the to-be-detected thermophysical field generation module comprises a to-be-detected gas thermophysical field and a thermophysical field generation device; the laser module comprises a laser detector and a laser emitting module;
the W-axis rotating platform is rotatably arranged on the bottom plate, and a W-axis driving motor for driving the W-axis rotating platform to rotate is arranged on the bottom plate; the X-axis translation tables are arranged on the W-axis rotation table in a sliding mode along the X direction, the X-axis translation tables are arranged in two groups, the W-axis rotation table is provided with an X-axis power assembly for driving the X-axis translation tables to move, and the two groups of X-axis translation tables are both vertically provided with mounting columns; the Z-axis translation stage a and the Z-axis translation stage b are respectively arranged on the two groups of mounting columns in a sliding manner along the vertical direction, and Z-axis power components for driving the Z-axis translation stage a and the Z-axis translation stage b to move are arranged on the mounting columns; the left supporting table and the right supporting table are respectively arranged on the Z-axis translation table b and the Z-axis translation table a, and the left supporting table and the right supporting table are both horizontally arranged; the laser emitting module and the laser detector are respectively arranged on the left supporting table and the right supporting table, and a laser light path is formed between the laser emitting module and the laser detector; through holes for the heat supply physical field generating devices to penetrate through are vertically formed in the bottom plate and the W-axis rotating platform, the heat physical field generating devices upwards generate a gas thermal physical field to be detected, the laser light path penetrates through the gas thermal physical field to be detected, and a lifting platform is arranged at the bottom of the heat physical field generating devices.
Preferably, the X-axis power assembly comprises an X-axis driving motor and a screw a; the X-axis driving motors are arranged on the W-axis rotating table, the X-axis driving motors are arranged in two groups, output shafts of the X-axis driving motors are connected with the screw rods a, the screw rods a are arranged in two groups along the X direction, and threaded holes matched with the screw rods a are formed in the X-axis translation table.
Preferably, the Z-axis power assembly comprises a Z-axis driving motor and a screw b; z axle driving motor sets up two sets ofly, and two sets of Z axle driving motor set up respectively at two sets of erection column tops, and Z axle driving motor's output shaft is connected with screw rod b, and screw rod b is vertical to be set up two sets ofly, all be provided with on Z axle translation platform an and the Z axle translation platform b with screw rod b complex screw hole.
Preferably, a reinforcing rib plate is arranged between the left supporting platform and the Z-axis translation platform b; and a reinforcing rib plate is arranged between the right supporting platform and the Z-axis translation platform a.
On the other hand, the invention provides a gas parameter multidimensional measurement method of a gas parameter multidimensional detection system based on absorption spectrum, a laser emission module and a laser detector are respectively in the state of a point light source and a point detector, and the method is characterized by comprising the following steps: s11, the computer control end gives a translation signal to the X-axis driving motor, the left supporting table and the right supporting table drive the laser emission module and the laser detector to scan the area to be detected in parallel along with the X-axis translation table, and all scanning detection at the same incidence angle is completed; s12, driving the W-axis rotating platform, repeating S11 after finishing a given rotating angle instruction, and repeating the operation in the same way until all the target rotating angles are scanned in parallel; s13, driving the Z-axis translation table a and the Z-axis translation table b according to a fixed step length, and repeating S11 and S12 after the right supporting table and the left supporting table are lifted to a target height; and S14, repeating S13 until the measurement of the target vertical height is completed.
Preferably, in the gas parameter multidimensional measurement method, the laser emission module and the laser detector are respectively in the states of a line light source and a linear matrix detector, and the method is characterized by comprising the following steps: s21, the linear light source penetrates through the area to be measured along a single path from the initial incident angle and is received by the linear matrix detector on the right supporting table;
s22, driving the W-axis rotating platform, repeating S21 after finishing a given rotating angle instruction, and repeating the operation in the same way until all the target rotating angles are scanned in parallel; s23, driving the Z-axis translation table a and the Z-axis translation table b according to a fixed step length, and repeating S21 and S22 when the right supporting table and the left supporting table rise to a target height; and S24, repeating S24 until the measurement of the target vertical height is completed.
Preferably, in the gas parameter multidimensional measurement method, the laser emission module and the laser detector are respectively in the states of a surface light source and a planar matrix detector, and the method is characterized by comprising the following steps of: s31, the surface light source penetrates through the area to be measured from the initial incident angle along a single path and is received by the planar matrix detector on the right supporting table;
s32, driving the Z-axis translation table a and the Z-axis translation table b according to a fixed step length, and repeating S31 when the right supporting table and the left supporting table are lifted to a target height; and S33, repeating S32 until the measurement of the target vertical height is completed.
Compared with the prior art, the invention has the following beneficial technical effects: the two-dimensional and three-dimensional gas parameter distribution of the region to be measured can be rapidly acquired by combining the spectral tomography technology through laser parallel scanning, vertical scanning and rotary scanning of the region to be measured, a large number of laser beams and sensors are not required to be arranged, the experimental device is simplified, the equipment cost is greatly reduced, and the measurement efficiency can be improved through automatic programming of a translation table and a rotating table. And secondly, the laser emission module is provided with a point light source, a line light source and a surface light source, the corresponding laser detector is provided with a point detector, a linear matrix detector and a planar matrix detector, and different light sources and detectors are replaced to obtain different detection methods. And thirdly, the lifting platform is arranged below the thermal physical field generating device to adjust the vertical height of the thermal physical field generating device, so that the vertical direction of the measuring plane can be accurately positioned, and the measuring range in the vertical direction can be expanded.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the optical path of point light source detection according to the present invention;
FIG. 3 is a schematic view of the optical path of the line light source detection of the present invention;
FIG. 4 is a schematic diagram of the optical path for detection by a surface light source according to the present invention;
FIG. 5 is a flowchart of the third embodiment;
FIG. 6 is a flowchart according to a fourth embodiment;
FIG. 7 is a flow chart of the fifth embodiment.
Reference numerals are as follows: 1. a W-axis rotating table; 2. an X-axis translation stage; 3. an X-axis drive motor; 4. a right support table; 5. a laser detector; 6. a Z-axis translation stage a; 7. a Z-axis drive motor; 8. a thermophysical field of the gas to be detected; 9. a Z-axis translation stage b; 10. a laser emission module; 11. a left support table; 12. a laser light path; 13. a W-axis drive motor; 14. a thermophysical field generating device; 15. a point light source; 16. a point detector; 17. a line light source; 18. a linear matrix detector; 19. a surface light source; 20. a planar matrix detector.
Detailed Description
Example one
As shown in fig. 1-4, the present invention provides a gas parameter multidimensional detection system based on absorption spectroscopy, which includes a three-dimensional translation stage module, a thermal physical field generation module to be detected, and a laser module; the three-dimensional translation table module comprises a W-axis rotating table 1, an X-axis translation table 2, a right supporting table 4, a Z-axis translation table a6, a Z-axis translation table b9 and a left supporting table 11; the generating module of the thermophysical field to be measured comprises a thermophysical field 8 of the gas to be measured and a thermophysical field generating device 14; the laser module comprises a laser detector 5 and a laser emitting module 10;
the W-axis rotating platform 1 is rotationally arranged on the bottom plate, and a W-axis driving motor 13 for driving the W-axis rotating platform 1 to rotate is arranged on the bottom plate; the X-axis translation tables 2 are arranged on the W-axis rotation table 1 in an X-direction in a sliding mode, the X-axis translation tables 2 are arranged in two groups, X-axis power assemblies for driving the X-axis translation tables 2 to move are arranged on the W-axis rotation table 1, and mounting columns are vertically arranged on the two groups of X-axis translation tables 2; the Z-axis translation stage a6 and the Z-axis translation stage b9 are respectively arranged on the two groups of mounting columns in a sliding manner along the vertical direction, and a Z-axis power assembly for driving the Z-axis translation stage a6 and the Z-axis translation stage b9 to move is arranged on the mounting columns; the left supporting table 11 and the right supporting table 4 are respectively arranged on a Z-axis translation table b9 and a Z-axis translation table a6, and the left supporting table 11 and the right supporting table 4 are both horizontally arranged; the laser emitting module 10 and the laser detector 5 are respectively arranged on the left supporting table 11 and the right supporting table 4, and a laser light path 12 is formed between the laser emitting module 10 and the laser detector 5; through holes through which the heat supply physical field generating device 14 penetrates are vertically formed in the bottom plate and the W-axis rotating platform 1, the heat supply physical field generating device 14 upwards generates a gas thermal physical field 8 to be detected, the laser light path 12 penetrates through the gas thermal physical field 8 to be detected, and a lifting platform is arranged at the bottom of the heat supply physical field generating device 14. A reinforcing rib plate is arranged between the left supporting platform 11 and the Z-axis translation platform b 9; a reinforcing rib is provided between the right support table 4 and the Z-axis translation table a 6.
The embodiment has the following beneficial effects: the two-dimensional and three-dimensional gas parameter distribution of the region to be measured can be rapidly acquired by combining the spectral tomography technology through laser parallel scanning, vertical scanning and rotary scanning of the region to be measured, a large number of laser beams and sensors are not required to be arranged, the experimental device is simplified, the equipment cost is greatly reduced, and the measurement efficiency can be improved through automatic programming of a translation table and a rotating table. The laser emitting module 10 is provided with a point light source 15, a line light source 17 and a surface light source 19, the corresponding laser detector 5 is provided with a point detector 16, a linear matrix detector 18 and a planar matrix detector 20, and different light sources and detectors are replaced to obtain different detection methods. Thirdly, the lifting platform is arranged below the thermal physical field generating device 14 to adjust the vertical height of the thermal physical field generating device 14, so that the vertical direction of the measuring plane can be accurately positioned, and the measuring range in the vertical direction can be expanded.
Example two
As shown in fig. 1, compared with the first embodiment, the multi-dimensional gas parameter detection system based on absorption spectroscopy provided by the present invention includes an X-axis power assembly including an X-axis driving motor 3 and a screw a; the X-axis driving motor 3 is arranged on the W-axis rotating table 1, the X-axis driving motors 3 are arranged in two groups, the output shafts of the X-axis driving motors 3 are connected with the screw rods a, the screw rods a are arranged in two groups along the X direction, and threaded holes matched with the screw rods a are formed in the X-axis translation table 2. The Z-axis power assembly comprises a Z-axis driving motor 7 and a screw b; z axle driving motor 7 sets up two sets ofly, and two sets of Z axle driving motor 7 set up respectively at two sets of erection column tops, and Z axle driving motor 7's output shaft is connected with screw rod b, and screw rod b is vertical to be set up two sets ofly, all be provided with on Z axle translation platform a6 and the Z axle translation platform b9 with screw rod b complex screw hole. The driving structure for X-axis and Z-axis movement adopts the form of a motor and a screw, and the form has a simple structure and is convenient to produce and manufacture.
EXAMPLE III
As shown in fig. 5, based on the gas parameter multidimensional measurement method of the gas parameter multidimensional detection system based on absorption spectrum, the laser emission module 10 and the laser detector 5 are respectively in the state of the point light source 15 and the point detector 16, and the method is characterized by comprising the following steps:
s11, the computer control end gives a translation signal to the X-axis driving motor 3, the left supporting table 11 and the right supporting table 4 drive the laser emission module and the laser detector to scan the area to be detected in parallel along with the X-axis translation table 2, and all scanning detection at the same incidence angle is completed;
s12, driving the W-axis rotating platform 1, repeating S11 after finishing a given rotating angle instruction, and repeating the steps until all the target rotating angles are scanned in parallel;
s13, driving the Z-axis translation stage a6 and the Z-axis translation stage b9 according to a fixed step length, and repeating S11 and S12 after the right supporting table 4 and the left supporting table 11 rise to a target height;
and S14, repeating S13 until the measurement of the target vertical height is completed.
In this embodiment, S11 and S12 may perform gridding division on the region to be measured, and obtain absorption spectrum signals of the gas to be measured at a certain vertical height along the optical path in different directions of the thermophysical field; absorption spectrum signals of the gas thermal physical field at different positions of all fault planes at the target height along the optical path can be obtained by completing all the steps, and the three-dimensional distribution of the gas thermal physical field thermal physical parameters to be measured can be obtained by combining the laser absorption spectrum tomography technology.
Example four
As shown in fig. 6, based on the gas parameter multidimensional measurement method of the gas parameter multidimensional detection system based on absorption spectrum, the laser emission module 10 and the laser detector 5 are respectively in the state of the line light source 17 and the linear matrix detector 18, and the method is characterized by comprising the following steps:
s21, the linear light source 17 penetrates through the area to be measured along a single path from the initial incident angle and is received by the linear matrix detector 18 on the right supporting table 4;
s22, driving the W-axis rotating platform 1, repeating S21 after finishing a given rotating angle instruction, and repeating the steps until all the target rotating angles are scanned in parallel;
s23, driving the Z-axis translation table a6 and the Z-axis translation table b9 according to fixed steps, and repeating S21 and S22 after the right supporting table 4 and the left supporting table 11 are lifted to the target height;
and S24, repeating S23 until the measurement of the target vertical height is completed.
In this embodiment, S21 and S22 may obtain absorption spectrum signals of the thermal physical field of the gas to be measured at a certain vertical height along the optical path in different directions; absorption spectrum signals of the gas thermal physical field of all fault planes at the target height along the optical path in different directions can be obtained by completing all the steps, and the three-dimensional distribution of the gas thermal physical parameters to be detected can be obtained by combining the laser absorption spectrum tomography technology.
EXAMPLE five
As shown in fig. 7, based on the gas parameter multidimensional measurement method of the gas parameter multidimensional detection system based on absorption spectrum, the laser emission module 10 and the laser detector 5 are respectively in the state of the surface light source 19 and the planar matrix detector 20, and the method is characterized by comprising the following steps:
s31, the surface light source 19 penetrates through the area to be measured from the initial incident angle along a single path and is received by the planar matrix detector 20 on the right supporting table 4;
s32, driving the Z-axis translation stage a6 and the Z-axis translation stage b9 according to a fixed step length, and repeating S31 after the right supporting table 4 and the left supporting table 11 rise to a target height;
and S33, repeating S32 until the measurement of the target vertical height is completed.
In this embodiment, S31 may obtain the three-dimensional distribution of the thermal physical parameters of the gas to be measured at the same height as the surface light source 19, and all the steps may obtain the three-dimensional distribution of the thermal physical parameters of the gas to be measured at the target height.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. A gas parameter multidimensional detection system based on absorption spectrum is characterized by comprising a three-dimensional translation table module, a thermal physical field generation module to be detected and a laser module; the three-dimensional translation table module comprises a W-axis rotation table (1), an X-axis translation table (2), a right supporting table (4), a Z-axis translation table a (6), a Z-axis translation table b (9) and a left supporting table (11); the generating module of the thermophysical field to be detected comprises a thermophysical field (8) of the gas to be detected and a thermophysical field generating device (14); the laser module comprises a laser detector (5) and a laser emission module (10);
the W-axis rotating platform (1) is rotationally arranged on the bottom plate, and a W-axis driving motor (13) for driving the W-axis rotating platform (1) to rotate is arranged on the bottom plate; the X-axis translation tables (2) are arranged on the W-axis rotation table (1) in a sliding mode along the X direction, the X-axis translation tables (2) are arranged in two groups, X-axis power assemblies for driving the X-axis translation tables (2) to move are arranged on the W-axis rotation table (1), and mounting columns are vertically arranged on the two groups of X-axis translation tables (2); the Z-axis translation stage a (6) and the Z-axis translation stage b (9) are respectively arranged on the two groups of mounting columns in a sliding manner along the vertical direction, and Z-axis power components for driving the Z-axis translation stage a (6) and the Z-axis translation stage b (9) to move are arranged on the mounting columns; the left supporting table (11) and the right supporting table (4) are respectively arranged on the Z-axis translation table b (9) and the Z-axis translation table a (6), and the left supporting table (11) and the right supporting table (4) are horizontally arranged; the laser emitting module (10) and the laser detector (5) are respectively arranged on the left supporting table (11) and the right supporting table (4), and a laser light path (12) is formed between the laser emitting module (10) and the laser detector (5); through holes through which a heat supply physical field generating device (14) penetrates are vertically arranged on the base plate and the W-axis rotating platform (1), the heat supply physical field generating device (14) upwards generates a gas thermal physical field (8) to be measured, the laser light path (12) penetrates through the gas thermal physical field (8) to be measured, and a lifting platform is arranged at the bottom of the heat supply physical field generating device (14).
2. The absorption spectroscopy-based gas parameter multi-dimensional detection system according to claim 1, wherein the X-axis power assembly comprises an X-axis drive motor (3) and a screw a; the X-axis driving motor (3) is arranged on the W-axis rotating table (1), the X-axis driving motors (3) are arranged in two groups, an output shaft of the X-axis driving motor (3) is connected with a screw rod a, the screw rod a is arranged in two groups along the X direction, and a threaded hole matched with the screw rod a is formed in the X-axis translation table (2).
3. The gas parameter multidimensional detection system based on absorption spectroscopy of claim 1, wherein the Z-axis power assembly comprises a Z-axis drive motor (7) and a screw b; z axle driving motor (7) set up two sets ofly, and two sets of Z axle driving motor (7) set up respectively at two sets of erection column tops, and the output shaft and the screw rod b of Z axle driving motor (7) are connected, and the vertical setting of screw rod b is two sets of, all is provided with on Z axle translation platform an (6) and Z axle translation platform b (9) with screw rod b complex screw hole.
4. The gas parameter multidimensional detection system based on absorption spectroscopy according to claim 1, wherein a reinforcing rib is arranged between the left support table (11) and the Z-axis translation table b (9); a reinforcing rib plate is arranged between the right supporting platform (4) and the Z-axis translation platform a (6).
5. The multidimensional measurement method of the gas parameters of the multidimensional gas parameter detection system based on the absorption spectrum according to the claim 1, the laser emission module (10) and the laser detector (5) are respectively in the state of a point light source (15) and a point detector (16), and the method is characterized by comprising the following steps:
s11, a computer control end gives a translation signal to an X-axis driving motor (3), a left supporting table (11) and a right supporting table (4) drive a laser emitting module and a laser detector to scan a region to be detected in parallel along with the X-axis translation table (2), and all scanning detection at the same incidence angle is completed;
s12, driving the W-axis rotating platform (1), repeating S11 after finishing a given rotating angle instruction, and so on until completing parallel scanning of all target rotating angles;
s13, driving the Z-axis translation table a (6) and the Z-axis translation table b (9) according to a fixed step length, and repeating S11 and S12 after the right supporting table (4) and the left supporting table (11) rise to a target height;
and S14, repeating S13 until the measurement of the target vertical height is completed.
6. A gas parameter multidimensional measurement method according to claim 5, the laser emitting module (10) and the laser detector (5) being respectively a line light source (17) and a linear matrix detector (18), characterized by comprising the following steps:
s21, the linear light source (17) penetrates through the area to be measured along a single path from the initial incidence angle and is received by the linear matrix detector (18) on the right supporting table (4);
s22, driving the W-axis rotating platform (1), repeating the step S21 after finishing a given rotating angle command, and so on until finishing the parallel scanning of all target rotating angles;
s23, driving the Z-axis translation table a (6) and the Z-axis translation table b (9) according to a fixed step length, and repeating S21 and S22 after the right supporting table (4) and the left supporting table (11) rise to a target height;
and S24, repeating S23 until the measurement of the target vertical height is completed.
7. The multidimensional measurement method of the gas parameters according to claim 5, the laser emission module (10) and the laser detector (5) are respectively in the state of a surface light source (19) and a planar matrix detector (20), and the method is characterized by comprising the following steps:
s31, the surface light source (19) penetrates through the area to be measured along a single path from the initial incidence angle and is received by the planar matrix detector (20) on the right supporting table (4);
s32, driving the Z-axis translation table a (6) and the Z-axis translation table b (9) according to a fixed step length, and repeating S31 when the right supporting table (4) and the left supporting table (11) rise to a target height;
and S33, repeating S32 until the measurement of the target vertical height is completed.
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| WO2009052157A1 (en) * | 2007-10-16 | 2009-04-23 | Zolo Technologies, Inc. | Translational laser absorption spectroscopy apparatus and method |
| CN201191270Y (en) * | 2008-04-03 | 2009-02-04 | 浙江大学 | Measurement apparatus for reconstructing fume concentration temperature distribution by relative spiral motion of laser |
| CN104949770A (en) * | 2015-07-13 | 2015-09-30 | 天津津航技术物理研究所 | TDLAS (tunable diode laser absorption spectroscopy) gas temperature measurement and detection device |
| CN106017725A (en) * | 2016-05-26 | 2016-10-12 | 中国人民解放军装备学院 | Measuring device suitable for two-dimensional reconstruction of combustion flow field gas |
| CN111175049A (en) * | 2020-01-20 | 2020-05-19 | 中国科学院力学研究所 | Diagnosis system and method for multidimensional temperature and concentration field of engine combustion chamber |
| CN111855610A (en) * | 2020-06-30 | 2020-10-30 | 武汉六九传感科技有限公司 | Two-dimensional gas detection device and three-dimensional gas detection device |
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| CN116972387A (en) * | 2023-07-06 | 2023-10-31 | 四川大学 | Smoke-suppressing flame separation combustion device for in-situ monitoring of combustion calorimeter and free radicals and combined analysis system |
| CN116972387B (en) * | 2023-07-06 | 2024-05-14 | 四川大学 | Smoke-suppressing flame separation combustion device for in-situ monitoring of combustion calorimeter and free radicals and combined analysis system |
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