Airflow parameter detection device

Abstract

The application relates to the technical field of airflow parameter detection, and discloses an airflow parameter detection device, which comprises a layered common-flow passage cabin, a three-dimensional ultrasonic wind speed measurement assembly, an auxiliary compensation transducer, a temperature and humidity sensor and an atmospheric pollutant concentration monitoring sensor. A vertical ventilation hole is arranged in the middle of the layered common-flow passage cabin, and an upper middle cavity and a lower cavity are arranged in the interior and communicate with the ventilation hole. The atmospheric pollutant concentration monitoring sensor is arranged at the ventilation hole at the bottom of the lower cavity, the temperature and humidity sensor is arranged at the ventilation hole between the middle cavity and the lower cavity, the auxiliary compensation transducer is arranged at the ventilation hole at the top of the middle cavity, and the three-dimensional ultrasonic wind speed measurement assembly is arranged at the ventilation hole at the top of the layered common-flow passage cabin. The sensors share the same axial airflow channel, the stability and precision of the obtained vertical airflow parameters are improved, and the wind speed data of the three-dimensional ultrasonic wind speed measurement assembly can be corrected by using the measurement value of the auxiliary compensation transducer, so that the detection precision is further improved.

Description

Technical Field

[0001] This invention relates to the field of airflow parameter detection technology, and more specifically to an airflow parameter detection device. Background Technology

[0002] In enclosed or semi-enclosed spaces such as production workshops, chemical laboratories, and cleanrooms, airflow parameters such as air flow field distribution, temperature and humidity field, and pollutant concentration field directly affect the efficiency of ventilation systems, energy consumption levels, and the health and safety of workers. Three-dimensional multi-parameter synchronous observation is the core data foundation for ventilation optimization design and waste gas treatment transformation.

[0003] Currently, data acquisition using conventional three-dimensional ultrasonic anemometers is relatively limited. Furthermore, when acquiring data, under low wind speed conditions (<0.5m / s), the vertical path difference signal is extremely weak, resulting in a low signal-to-noise ratio and poor acquisition of airflow parameters.

[0004] Therefore, there is an urgent need for an airflow parameter detection device to solve the problem of poor airflow parameter acquisition by conventional three-dimensional ultrasonic anemometers. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing an airflow parameter detection device to solve the problem of poor airflow parameter acquisition results by conventional three-dimensional ultrasonic anemometers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An airflow parameter detection device is characterized by comprising a layered common flow channel chamber, a three-dimensional ultrasonic anemometer, an auxiliary compensation transducer, a temperature and humidity sensor, and an air pollutant concentration monitoring sensor. The layered common flow channel chamber has a vertically penetrating ventilation hole in the middle, and has a middle cavity and a lower cavity connected to the ventilation hole and layered vertically. An air pollutant concentration monitoring sensor is installed at the ventilation hole at the bottom of the lower cavity, a temperature and humidity sensor is installed at the ventilation hole between the middle cavity and the lower cavity, an auxiliary compensation transducer is installed at the ventilation hole at the top of the middle cavity, and a three-dimensional ultrasonic anemometer is installed at the ventilation hole at the top of the layered common flow channel chamber.

[0008] To optimize the above technical solution, the specific measures also include: Furthermore, the three-dimensional ultrasonic anemometer assembly includes a first pair of horizontal main transducers, a second pair of horizontal main transducers, and an inclined vertical main transducer. The top of the layered co-flow channel chamber is provided with four supports arranged in a square around the ventilation holes. The first pair of horizontal main transducers is set on two diagonally distributed supports and arranged horizontally orthogonally along the preset X-axis direction. The second pair of horizontal main transducers is set on the other two diagonally distributed supports and arranged horizontally orthogonally along the preset Y-axis direction. The inclined vertical main transducer is set at an inclination relative to the preset Z-axis direction on the top of the layered co-flow channel chamber via supports.

[0009] Furthermore, the tilt direction of the tilted vertical main transducer is consistent with the main ventilation direction of the workshop.

[0010] Furthermore, the tilt angle of the tilted vertical main transducer relative to the preset Z-axis is in the range of 15°-20°.

[0011] Furthermore, a heat-insulating gasket is provided between the temperature and humidity sensor and the layered common flow channel chamber.

[0012] Furthermore, a funnel-shaped structure with its constricted opening facing downwards is installed at the ventilation hole at the bottom of the lower cavity of the layered common flow channel chamber, and an atmospheric pollutant concentration monitoring sensor is installed inside the funnel-shaped structure.

[0013] Furthermore, the constricted portion of the funnel-shaped structure is provided with an inertial separation air inlet.

[0014] Furthermore, it also includes a control box and a three-dimensional moving device. The three-dimensional moving device is installed on the top of the control box, and the layered co-flow chamber is installed on the slider of the three-dimensional moving device. The three-dimensional moving device is used to drive the slider to move the layered co-flow chamber within a preset three-dimensional space.

[0015] Furthermore, a laser obstacle avoidance sensor is installed on each of the front, back, left, and right sides of the slider.

[0016] Furthermore, the bottom of the layered common flow channel chamber is provided with several miniature high-pressure air nozzles around the ventilation holes, with the jet ends of the miniature high-pressure air nozzles facing downwards.

[0017] The beneficial effects of this invention are: This invention, through the configuration of a three-dimensional ultrasonic anemometer, an auxiliary compensation transducer, a temperature and humidity sensor, and an atmospheric pollutant concentration monitoring sensor, enables the use of vertically connected ventilation holes to share the same axial airflow channel. The three-dimensional ultrasonic anemometer, auxiliary compensation transducer, temperature and humidity sensor, and atmospheric pollutant concentration monitoring sensor simultaneously collect data on the airflow passing through the ventilation holes, improving the stability and accuracy of vertical airflow parameters and increasing the diversity of collected data. Furthermore, the measurements from the auxiliary compensation transducer can be used to correct the distortion of the wind speed data from the three-dimensional ultrasonic anemometer, thereby obtaining the required wind speed component. Combined with temperature and humidity data, concentration data, etc., this allows for the monitoring of multi-dimensional ventilation parameters, improving monitoring accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an airflow parameter detection device proposed in this invention; Figure 2 This is a schematic diagram of the structure of the layered co-flow chamber of an airflow parameter detection device proposed in this invention; Figure 3 This is a structural side view of the layered co-flow chamber of an airflow parameter detection device proposed in this invention; Figure 4 This is a schematic diagram of the installation of a three-dimensional ultrasonic anemometer component of an airflow parameter detection device proposed in this invention.

[0019] Reference numerals: 1. Three-dimensional ultrasonic anemometer component; 1-1. First pair of horizontal main transducers; 1-2. Second pair of horizontal main transducers; 1-3. Inclined vertical main transducer; 1-4. Auxiliary compensation transducer; 2. Temperature and humidity sensor; 3. Atmospheric pollutant concentration monitoring sensor; 3-1. Inertial separation air inlet; 3-2. Miniature high-pressure nozzle; 4. Layered common flow channel chamber; 4-1. Lower cavity; 4-2. Middle cavity; 5. Three-dimensional moving device; 5-1. Slider; 6. First rangefinder; 7. Second rangefinder; 8. Third rangefinder; 8-1. Inertial measurement unit; 9. Control panel; 10. Power supply and storage module; 11. Data processing module; 12. Data transceiver port; 13. Adjustable support foot; 14. Laser obstacle avoidance sensor. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] An airflow parameter detection device according to an embodiment of the present invention includes a layered common flow channel chamber 4, a three-dimensional ultrasonic anemometer component 1, an auxiliary compensation transducer 1-4, a temperature and humidity sensor 2, and an air pollutant concentration monitoring sensor 3. The layered common flow channel chamber 4 has a vertically penetrating ventilation hole in the middle, and has a middle cavity 4-2 and a lower cavity 4-1 connected to the ventilation hole and layered vertically. The air pollutant concentration monitoring sensor 3 is located at the ventilation hole at the bottom of the lower cavity 4-1, the temperature and humidity sensor 2 is located at the ventilation hole between the middle cavity 4-2 and the lower cavity 4-1, the auxiliary compensation transducer 1-4 is located at the ventilation hole at the top of the middle cavity 4-2, and the three-dimensional ultrasonic anemometer component 1 is located at the ventilation hole at the top of the layered common flow channel chamber 4. The three-dimensional ultrasonic anemometer component 1, the auxiliary compensation transducer 1-4, the temperature and humidity sensor 2, and the air pollutant concentration monitoring sensor 3 are electrically connected to a data processing module 11.

[0022] This invention, through the arrangement of a three-dimensional ultrasonic anemometer component 1, auxiliary compensation transducers 1-4, a temperature and humidity sensor 2, and an atmospheric pollutant concentration monitoring sensor 3, enables the use of vertically connected ventilation holes to share the same axial airflow channel. The three-dimensional ultrasonic anemometer component 1, auxiliary compensation transducers 1-4, temperature and humidity sensor 2, and atmospheric pollutant concentration monitoring sensor 3 simultaneously collect data on the airflow passing through the ventilation holes, improving the stability and accuracy of vertical airflow parameters and increasing the diversity of collected data. Furthermore, the measurements from the auxiliary compensation transducers 1-4 can be used to correct the distortion of the wind speed data from the three-dimensional ultrasonic anemometer component 1, thereby obtaining the required wind speed component. Combined with temperature and humidity data, concentration data, etc., this allows for the monitoring of multi-dimensional ventilation parameters, improving monitoring accuracy.

[0023] In the above scheme, the auxiliary compensation transducer 1-4 is installed directly below the three-dimensional ultrasonic anemometer component 1, which can measure the original incoming wind speed that is not blocked by the three-dimensional ultrasonic anemometer component 1. The temperature and humidity sensor 2 is located in the airflow stabilization zone inside the layered common flow channel chamber 4, so as to better obtain the corresponding parameters. Several auxiliary compensation transducers 1-4 and temperature and humidity sensors 2 can be set around the ventilation holes. The temperature and humidity sensor 2 can be SHT40-AD1B-R3 / R2.

[0024] As attached Figure 2 Appendix Figure 3 and attached Figure 4As shown, in a specific embodiment based on the above, the three-dimensional ultrasonic anemometer component 1 includes a first pair of horizontal main transducers 1-1, a second pair of horizontal main transducers 1-2, and an inclined vertical main transducer 1-3. The top of the layered co-flow chamber 4 is provided with four brackets arranged in a square distribution around the ventilation holes. The first pair of horizontal main transducers 1-1 is set on two diagonally distributed brackets and arranged horizontally orthogonally along the preset X-axis direction. The second pair of horizontal main transducers 1-2 is set on the other two diagonally distributed brackets and arranged horizontally orthogonally along the preset Y-axis direction. The inclined vertical main transducer 1-3 is set at the top of the layered co-flow chamber 4 at an inclination relative to the preset Z-axis direction through the brackets.

[0025] In this embodiment, the first pair of horizontal main transducers 1-1 and the second pair of horizontal main transducers 1-2 are used to measure the horizontal wind speed components in different directions, and the tilted vertical main transducer 1-3 is used to measure the vertical wind speed components. The tilted design can increase the intensity of the sound path difference signal at low wind speeds and improve the resolution of the vertical components. Furthermore, the arrangement of the first pair of horizontal main transducers 1-1, the second pair of horizontal main transducers 1-2, and the tilted vertical main transducer 1-3 does not obstruct the airflow, reduces distortion, and improves measurement accuracy.

[0026] Among them, the tilting direction of the aforementioned inclined vertical main transducers 1-3 is consistent with the main ventilation direction of the workshop.

[0027] The tilt angle of the aforementioned tilted vertical main transducers 1-3 relative to the preset Z-axis ranges from 15° to 20°. In this embodiment, 18° is preferred.

[0028] In another specific embodiment based on the above, a heat-insulating gasket is provided between the temperature and humidity sensor 2 and the layered common flow chamber 4. In this embodiment, the heat-insulating gasket can reduce the interference of the temperature and humidity sensor 2's own heat generation on the flowing air.

[0029] In another specific embodiment based on the above, a funnel-shaped structure with a constricted opening is installed at the ventilation hole at the bottom of the lower cavity 4-1 of the layered common flow channel chamber 4, and the atmospheric pollutant concentration monitoring sensor 3 is installed inside the funnel-shaped structure.

[0030] The funnel-shaped structure described above has an inertial separation air inlet 3-1 at its constricted opening. In this embodiment, the funnel-shaped structure and the inertial separation air inlet 3-1 help to align the air intake direction with the airflow direction, which helps to reduce interference from particulate matter deposition. The atmospheric pollutant concentration monitoring sensor 3 can use a PMS6003 laser particulate matter concentration PM2.5 sensor module and a gas sensor module from Qianzhao Technology, which can simultaneously monitor the concentrations of multiple pollutants such as PM2.5, VOCs, and SO2.

[0031] As attached Figure 1As shown, in another specific embodiment based on the above, a control box and a three-dimensional moving device 5 are also included. The three-dimensional moving device 5 is installed on the top of the control box, and the layered co-flow channel chamber 4 is installed on the slider 5-1 of the vertical slide rail of the three-dimensional moving device 5. The three-dimensional moving device 5 is used to drive the slider 5-1 to carry the layered co-flow channel chamber 4 to move in a preset three-dimensional space.

[0032] In this embodiment, the three-dimensional moving device 5 described above uses existing products and may include a main controller Arduino UNOR3, a stepper driver TB6600, stepper motors 57HS22 that control the x and y axes respectively, and a z-axis 57HS22-B.

[0033] In this embodiment, a laser obstacle avoidance sensor 14 is installed on each of the front, back, left, and right sides of the aforementioned slider 5-1. The laser obstacle avoidance sensor 14 can be a Seaman SDM50, with a detection distance of 0.1-5m. The adapted control system has a built-in path planning algorithm that automatically adjusts the scanning path when an obstacle is detected, bypassing it and continuing monitoring.

[0034] In a further specific embodiment based on the above, a first distance measuring instrument 6, a second distance measuring instrument 7, and a third distance measuring instrument 8 may be set as needed. The first distance measuring instrument 6, the second distance measuring instrument 7, and the third distance measuring instrument 8 are used to measure the relative distances with the two side walls and the ground, respectively, and to provide spatial coordinates for each monitoring point.

[0035] Furthermore, the mounting plate of the third rangefinder 8, which is used to monitor the relative distance to the ground, is equipped with an inertial measurement unit 8-1, which can form a fusion positioning system with the first rangefinder 6, the second rangefinder 7 and the third rangefinder 8; the inertial measurement unit 8-1 can be a DZ-1 / IMU six-axis MEMS IMU, which provides short-term positioning data when the rangefinder is temporarily blocked by an obstacle, ensuring the continuity of positioning.

[0036] In the above scheme, the control box can be equipped with a control panel 9, a power supply and storage module 10, a data processing module 11, and a data transceiver port 12 as needed; the control panel 9 is used to coordinate the timing of the three-dimensional moving device 5 and data acquisition, and supports fixed-point scanning or dynamic tracking modes; the power supply and storage module 10 has a built-in lithium battery, which can run continuously for more than 24 hours and supports offline data storage; the data processing module 11 is electrically connected to the three-dimensional ultrasonic anemometer component 1, auxiliary compensation transducers 1-4, temperature and humidity sensor 2 and atmospheric pollutant concentration monitoring sensor 3 respectively, and is used to integrate data preprocessing, coordinate rotation correction, spatial interpolation and visualization functions; the data transceiver port 12 supports 4G wireless transmission for real-time monitoring and remote control.

[0037] The control box is equipped with adjustable support feet 13 at the bottom, with an adjustment range of 0-20cm, which can adapt to uneven workshop floors.

[0038] The bottom of the aforementioned layered co-flow chamber 4 is surrounded by ventilation holes and equipped with several miniature high-pressure air nozzles 3-2, with the nozzles facing downwards. In this embodiment, four miniature high-pressure air nozzles 3-2 can be installed and connected to a built-in compressed air tank via solenoid valves. Every 24 hours, high-pressure air is automatically ejected to remove particulate matter deposits from the surface of the device below. A standard wind speed source and a standard gas generator can be built-in as needed, automatically performing a full system calibration weekly without manual intervention. The calibration results are automatically saved and uploaded, reducing manual maintenance workload and making it suitable for continuous monitoring scenarios in workshops where long-term unattended operation is required.

[0039] One specific embodiment of the present invention is as follows: After the system is started, it first performs preheating and benchmark calibration: the three-dimensional ultrasonic anemometer component 1 preheats for 10 minutes, the temperature and humidity sensor 2 and the air pollutant concentration monitoring sensor 3 preheat for 5 minutes, and enters the monitoring state after the benchmark value stabilizes.

[0040] During the measurement process, the airflow enters from the inertial separation air inlet 3-1 at the bottom of the layered common flow channel chamber 4, passes through the atmospheric pollutant concentration monitoring sensor 3 and the temperature and humidity sensor 2 in sequence, and finally reaches the measurement area of ​​the three-dimensional ultrasonic anemometer component 1; the three layers share the same axial airflow channel to ensure that all sensors detect the same airflow.

[0041] The FPGA chip outputs a 100Hz synchronous trigger signal, and the three sensors complete sampling at the same time with a sampling time difference of less than 8μs; the sampled data is transmitted to the data processing module 11 in real time.

[0042] Then, the data processing module 11 performs the following operations: Data acquisition: Data is collected by the three-dimensional ultrasonic anemometer component 1, auxiliary compensation transducers 1-4, temperature and humidity sensor 2, and air pollutant concentration monitoring sensor 3, etc. Data preprocessing: Perform quality control on the full dataset, including limit range checks and rate of change checks, and remove outliers; Coordinate rotation correction: The wind speed data of the three-dimensional ultrasonic wind speed measurement component 1 is distorted by measuring the values ​​of the auxiliary compensation transducers 1-4, and then the coordinate system measurement values ​​of the three-dimensional ultrasonic wind speed measurement component 1 are converted into global coordinate system values ​​to ensure data direction consistency. Obstacle perception adaptive interpolation algorithm: First, laser ranging is performed using the first rangefinder 6, the second rangefinder 7, the third rangefinder 8, and the laser obstacle avoidance sensor 14 to obtain the distribution of obstacles in the workshop and establish a three-dimensional digital twin model; during the interpolation process, obstacle areas such as equipment and walls are marked as invalid areas and do not participate in the interpolation calculation; for areas with turbulence intensity > 0.3, large concentration gradient, ventilation dead corners, and pollution accumulation, the interpolation grid density is automatically increased by 2 times to improve the resolution of key areas; Multi-field coupling analysis: Integrates three-dimensional wind speed, temperature, humidity, and concentration data to calculate parameters such as pollutant diffusion flux, residence time, and ventilation efficiency, generating continuous three-dimensional flow field vector maps, concentration isosurface maps, and temperature and humidity distribution maps. Simultaneously, it calculates parameters such as overall workshop ventilation efficiency, average pollutant residence time, and diffusion flux, automatically marks ventilation dead zones and pollution accumulation areas, and generates targeted ventilation optimization suggestions, such as adjusting air outlet positions and increasing local air volume, which can be directly exported as an optimization design report.

[0043] In this embodiment, all the aforementioned sensors achieve microsecond-level synchronous sampling via an FPGA chip, with a unified sampling clock trigger and a sampling time difference of <10μs, ensuring that flow field, temperature, humidity, and concentration data are collected at the same time, achieving complete spatiotemporal matching. After all sensors achieve synchronous sampling via the FPGA chip, the data is transmitted to the data processing module 11. The control panel 9 receives instructions from the data processing module 11 and coordinates the timing, self-cleaning, and calibration processes of the three-dimensional moving device 5. The power supply and storage module 10 provides unified power to the entire system and enables external communication through the data transceiver port 12.

[0044] The 3D motion scanning and positioning process of devices such as 3D motion device 5 is as follows: Before monitoring, a spatial coordinate system is first established: a corner of the workshop is selected as the origin of the coordinate system, and the first and second rangefinders in the X and Y directions are aligned with the vertical walls on both sides to measure the initial distance as the coordinate reference. The third rangefinder in the Z direction measures the height above the ground to determine the zero point of the vertical coordinate.

[0045] During the scanning process, the servo motor drives the slider 5-1 to move along the guide rail according to the preset grid trajectory. After reaching each monitoring point, it pauses for 2 seconds to complete stable sampling. The four laser obstacle avoidance sensors 14 on the slider 5-1 detect surrounding obstacles in real time. When an obstacle is detected within 0.5m, the control panel 9 immediately stops moving, and the data processing module 11 automatically generates a detour path to bypass the obstacle and return to the preset trajectory to continue monitoring. When the rangefinder is temporarily blocked by the equipment, the IMU unit provides short-term inertial positioning to ensure continuous coordinate data.

[0046] The self-cleaning and automatic calibration process is as follows: Every 24 hours of cumulative operation, the system automatically pauses the monitoring task. Control panel 9 opens the solenoid valve, and the compressed air tank sprays 0.6MPa high-pressure air onto the sensor surface through four miniature high-pressure nozzles 3-2 for 10 seconds to remove deposited particles. After cleaning, monitoring automatically resumes. The self-cleaning process requires no manual intervention.

[0047] The system will automatically perform a full system calibration every 7 days of cumulative operation. Wind speed calibration: The built-in standard wind speed source generates three standard wind speed points of 0.5m / s, 2m / s, and 5m / s in sequence, and the system automatically measures and calibrates the wind speed coefficient; Concentration calibration: The built-in standard gas generator produces standard VOCs gas of known concentration, and automatically measures and calibrates the concentration coefficient; After calibration, the system automatically generates a calibration report, saves it locally, and uploads it to the cloud via 4G. When the calibration deviation exceeds the threshold, a maintenance reminder is automatically issued.

[0048] This invention improves the accuracy of three-dimensional measurement at low wind speeds by setting up a three-dimensional ultrasonic anemometer component 1 and auxiliary compensation transducers 1-4. By setting up a layered common flow channel chamber 4, and cooperating with FPGA synchronous sampling, it achieves multi-parameter synchronous acquisition without interference. With the matching three-dimensional moving device 5 and adaptive interpolation algorithm, it realizes high-precision three-dimensional observation of the three-dimensional flow field and concentration field in a confined space.

[0049] This invention simultaneously measures wind speed components in three directions based on the difference in propagation speed of ultrasonic pulses in the headwind and tailwind directions. The data processing module 11 calculates the airflow attenuation coefficient caused by the main body obstruction by comparing the wind speed difference between the three-dimensional ultrasonic anemometer component 1 and the auxiliary compensation transducers 1-4, and performs distortion correction on the main measurement value in real time. The three-dimensional ultrasonic anemometer component 1 can improve the signal intensity of the vertical component's path difference at low wind speeds (0.1 m / s). Combined with the auxiliary compensation transducers 1-4, it significantly reduces the measurement error of vertical wind speed, improves measurement accuracy, and solves the core pain point of inaccurate measurement in low wind speed scenarios in workshops.

[0050] It should be noted that the terms such as "upper", "lower", "left", "right", "front", and "back" used in the invention are only for clarity of description and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that those skilled in the art will understand that various changes, modifications, substitutions, refinements, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations should be considered within the scope of protection of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airflow parameter detection device, characterized in that: The system includes a layered co-flow chamber (4), a three-dimensional ultrasonic anemometer (1), an auxiliary compensation transducer (1-4), a temperature and humidity sensor (2), and an atmospheric pollutant concentration monitoring sensor (3). The layered co-flow chamber (4) has a vertically penetrating ventilation hole in the middle. Inside, there are a middle cavity (4-2) and a lower cavity (4-1) that are connected to the ventilation hole and are layered vertically. An atmospheric pollutant concentration monitoring sensor (3) is installed at the ventilation hole at the bottom of the lower cavity (4-1). A temperature and humidity sensor (2) is installed at the ventilation hole between the middle cavity (4-2) and the lower cavity (4-1). An auxiliary compensation transducer (1-4) is installed at the ventilation hole at the top of the middle cavity (4-2). A three-dimensional ultrasonic anemometer (1) is installed at the ventilation hole at the top of the layered co-flow chamber (4).

2. The airflow parameter detection device according to claim 1, characterized in that: The three-dimensional ultrasonic anemometer assembly (1) includes a first pair of horizontal main transducers (1-1), a second pair of horizontal main transducers (1-2), and an inclined vertical main transducer (1-3). The top of the layered co-flow chamber (4) is provided with four brackets arranged in a square around the ventilation holes. The first pair of horizontal main transducers (1-1) are set on two diagonally distributed brackets and are arranged horizontally orthogonally along the preset X-axis direction. The second pair of horizontal main transducers (1-2) are set on the other two diagonally distributed brackets and are arranged horizontally orthogonally along the preset Y-axis direction. The inclined vertical main transducer (1-3) is set at the top of the layered co-flow chamber (4) at an inclination relative to the preset Z-axis direction through the bracket.

3. The airflow parameter detection device according to claim 2, characterized in that: The tilting direction of the inclined vertical main transducer (1-3) is consistent with the main ventilation direction of the workshop.

4. The airflow parameter detection device according to claim 2, characterized in that: The tilt angle of the tilted vertical main transducer (1-3) relative to the preset Z-axis is in the range of 15°-20°.

5. The airflow parameter detection device according to claim 1, characterized in that: A heat insulation gasket is provided between the temperature and humidity sensor (2) and the layered co-flow chamber (4).

6. The airflow parameter detection device according to claim 1, characterized in that: A funnel-shaped structure with a constricted opening is installed at the bottom of the ventilation hole of the lower cavity (4-1) of the layered common flow channel chamber (4), and the atmospheric pollutant concentration monitoring sensor (3) is set inside the funnel-shaped structure.

7. The airflow parameter detection device according to claim 6, characterized in that: The funnel-shaped structure has an inertial separation air inlet (3-1) at its constricted opening.

8. The airflow parameter detection device according to claim 1, characterized in that: It also includes a control box and a three-dimensional moving device (5). The three-dimensional moving device (5) is installed on the top of the control box. The layered co-flow channel chamber (4) is installed on the slider (5-1) of the three-dimensional moving device (5). The three-dimensional moving device (5) is used to drive the slider (5-1) to carry the layered co-flow channel chamber (4) to move in a preset three-dimensional space.

9. The airflow parameter detection device according to claim 8, characterized in that: A laser obstacle avoidance sensor (14) is installed in front, behind, left, and right of the slider (5-1).

10. The airflow parameter detection device according to claim 8, characterized in that: The bottom of the layered common flow channel cabin (4) is surrounded by ventilation holes and has several miniature high-pressure air nozzles (3-2), with the jet end of the miniature high-pressure air nozzles (3-2) facing downwards.

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