A deposition amount collection device and method for aerosol deposition experiments

Abstract

The present application relates to a deposition amount collecting device and method for aerosol deposition experiment. The present application can collect the aerosol deposition amount in different time periods under different weather conditions in the aerosol deposition process simulated by the experiment cabin under different weather conditions through the sampler placed in the experiment cabin and the controller placed outside the experiment cabin, which is used for studying the influence of different meteorological conditions on the aerosol deposition amount. The present application can realize that the automatic sampling turntable automatically runs once every other set sampling interval time in the experiment process through the RPi and the relay control four frequency converters, and sequentially collects the aerosol deposition amount of the sampling interval time. The present application forms the sampling point area and the non-sampling point area by setting the shielding piece on the automatic sampling turntable, so that the sampling disc in the sampling point area is exposed to the simulated experiment environment of the experiment cabin for sampling, and at the same time, prevents water and aerosol from being deposited in the sampling disc in the non-sampling point area.

Description

Technical Field

[0001] The present invention belongs to the technical field of nuclear environment applications, and in particular relates to a device and method for collecting deposition amounts used in aerosol deposition experiments. Background Art

[0002] Aerosols are formed by solid or liquid particles as the dispersed phase and gas as the dispersion medium. Aerosol particles are characterized by uneven and complex distribution, often concentrated in the lower atmosphere. They influence cloud condensation nuclei and raindrop formation, and thus play a significant role in precipitation. They can even alter cloud lifespan and influence atmospheric composition.

[0003] As public awareness of environmental protection increases, in-depth research is needed on the important role aerosols play in climate change science. Summary of the Invention

[0004] In response to the defects existing in the prior art, the purpose of the present invention is to provide a deposition amount collection device and method for aerosol deposition experiments, which can collect aerosol deposition amounts in different time periods during the aerosol deposition process simulated under different weather conditions in the laboratory, and be used to study the impact of different meteorological conditions on aerosol deposition amounts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a deposition amount collection device for aerosol deposition experiments, comprising:

[0006] A sampler is placed in the experimental cabin, and the sampler includes an automatic sampling turntable, a sampling tray, and a shielding member; the automatic sampling turntable includes two linear conveyors and two 180° assembly line turning machines, the two ends of one of the 180° assembly line turning machines are respectively arranged adjacent to the first ends of the two linear conveyors, and the two ends of the other 180° assembly line turning machine are respectively arranged adjacent to the second ends of the two linear conveyors; the sampling tray is placed on the center line of the work surface of the automatic sampling turntable with the same set spacing; the work surface of the automatic sampling turntable includes a sampling point area and a non-sampling point area, and the non-sampling point area is provided with a shielding member;

[0007] The controller is placed outside the experimental cabin, and the controller includes four frequency converters, a relay, and RPi; the motor of each linear conveyor is connected to a frequency converter through a cable, and the motor of each 180° assembly line turning machine is connected to a frequency converter through a cable, and one relay is connected to the terminals of the four frequency converters, and the relay is connected to RPi.

[0008] Furthermore, the linear conveyor and the 180° assembly line turning machine are both belt conveyors;

[0009] The 180° assembly line turning machine uses a solid rubber belt for transportation;

[0010] The linear conveyor uses an open-hole rubber belt for transportation.

[0011] Furthermore, the sampling point area is arranged on one of the linear conveyors of the automatic sampling turntable.

[0012] Furthermore, the shielding member includes a support frame and a plate, wherein the support frame is a bracket formed by splicing angle steels and is arranged on both sides and the top of the non-sampling point area;

[0013] The plate covers the top of the support frame.

[0014] Furthermore, the motor connectors attached to the linear conveyor and the 180° assembly line turning machine adopt M25 integrated waterproof connectors.

[0015] Furthermore, the delivery time and sampling interval of the automatic sampling turntable are controlled by an RPi program set on the RPi;

[0016] The conveying time of the automatic sampling turntable is set according to the number of sampling disks placed on the automatic sampling turntable.

[0017] Furthermore, the deceleration and acceleration times of the four frequency converters are all set to 0;

[0018] The frequency converter of the linear conveyor is set to 70HZ, and the frequency converter of the 180° assembly line turning machine is set to 45HZ.

[0019] The present invention also provides a method for collecting deposition amount for an aerosol deposition experiment, which is implemented based on the deposition amount collecting device for an aerosol deposition experiment and includes the following steps:

[0020] S1. Measure the aerosol deposition at the sampling points of the dry deposition control experiment: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, release aerosol into the experimental chamber while turning on the automatic sampling turntable. After the experiment, weigh the tinfoil to obtain the aerosol deposition at the sampling points of the dry deposition control experiment.

[0021] S2. Measure the aerosol deposition at the wet deposition experiment sampling points: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, let rain or snow fall in the experimental chamber to release aerosols into the experimental space while turning on the automatic sampling turntable. After the experiment, dry the sampling plates, weigh the tinfoil, and obtain the aerosol deposition at the wet deposition experiment sampling points.

[0022] Furthermore, in steps S1 and S2, placing the sampling plates covered with tin foil on the working surface of the automatic sampling turntable at the same set spacing and setting the RPi program parameters include the following steps:

[0023] Place the sampling trays: Cover the surface of the sampling trays with weighed tin foil, and number the tin foil on the surface of the sampling trays in sequence. Then place the sampling trays on the working table of the automatic sampling turntable in the order of the numbers, and arrange the sampling trays at the same set spacing on the center line of the working table of the automatic sampling turntable;

[0024] Set the RPi program parameters: By setting the time it takes for the sampling disk to move from the previous position to the next position, the automatic sampling turntable can transport the sampling disk to the sampling point area after each operation; and set the sampling interval time based on the deposition characteristics of the aerosol under different simulation experimental conditions.

[0025] Furthermore, in step S1, when the aerosol is released into the experimental chamber space, the experimental parameters to be recorded include: aerosol dust emission amount, emission time, and experimental temperature;

[0026] In step S2, when rain or snow falls in the experimental chamber space and aerosols are released into the experimental chamber space, the experimental parameters that need to be recorded include: aerosol dust emission amount, emission time, water pump pressure from the start to the end of aerosol dust emission, experimental temperature, rainfall or snowfall.

[0027] The beneficial effects of the present invention are as follows: Using the deposition amount collection device and method provided by the present invention for aerosol deposition experiments, a sampler placed in the experimental chamber and a controller placed outside the experimental chamber can collect aerosol deposition amounts under different weather conditions and time periods during the aerosol deposition process in the experimental chamber to study the impact of different meteorological conditions on aerosol deposition. The present invention uses RPi and relays to control four frequency converters, enabling the automatic sampling turntable to automatically operate once every set sampling interval during the experiment, and the sampling turntable sequentially collects aerosol deposition amounts during the sampling interval. The present invention provides a shielding member on the automatic sampling turntable to form sampling point areas and non-sampling point areas, exposing the sampling turntable in the sampling point area to the simulated experimental environment of the experimental chamber for sampling, while preventing water and aerosols from being deposited on the sampling turntable in the non-sampling point area. Moreover, the materials, preparation process, and motor connector used in the sampler of the present invention are all waterproof, and can operate normally in different weather conditions such as rain and snow. In addition, the laboratory door will not be opened during the experiment. The start and stop of the artificial rain or snow device, the start and stop of the aerosol emitter, and the start and stop control of the automatic sampling turntable are all carried out outside the laboratory cabin to reduce errors caused by the airflow disturbance caused by opening and closing the laboratory door. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the working surface of the automatic sampling turntable provided in an embodiment of the present invention;

[0029] Figure 2 Schematic diagram of the circuit connection between the inverter, relay and RPi provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are further clearly and completely described below in conjunction with the accompanying drawings and examples. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, an embodiment of the present invention provides a deposition amount collection device for aerosol deposition experiments, the device mainly includes: a sampler, a controller,

[0032] The sampler is placed in the experimental cabin to collect aerosols;

[0033] The controller is placed outside the experimental cabin, and a software system is provided on the controller for controlling the sampler to collect aerosols according to a set sampling interval;

[0034] The sampler includes an automatic sampling turntable, a sampling disk, and a shielding member. The automatic sampling turntable includes two linear conveyors and two 180° assembly line benders. The two ends of one 180° assembly line bender are respectively arranged adjacent to the first ends of the two linear conveyors, and the two ends of the other 180° assembly line bender are respectively arranged adjacent to the second ends of the two linear conveyors. The two linear conveyors and the two 180° assembly line benders are spliced ​​to form the annular automatic sampling turntable. The two ends of the automatic sampling turntable are two semicircular 180° assembly line benders. The linear conveyors and 180° assembly line benders are both belt conveyors. The 180° assembly line benders use solid rubber belts for conveying. The linear conveyors use open-hole rubber belts for conveying to facilitate the drainage of rainwater during the experiment.

[0035] The automatic sampling turntable formed by splicing is 360cm long and 150cm wide, and the working surface of the automatic sampling turntable is 30cm from the ground. Figure 1 As shown, the working surface of the automatic sampling turntable is a ring conveying path formed by the belt of the linear conveyor and the belt surface of the 180° assembly line turning machine.

[0036] The sampling tray measures 45 x 35 cm and is placed at the same set spacing on the centerline of the work surface of the automatic sampling turntable. The work surface of the automatic sampling turntable includes a sampling point area and a non-sampling point area. The sampling point area is located on a linear conveyor of the automatic sampling turntable and is exposed to the simulated experimental environment of the laboratory chamber. Driven by the automatic sampling turntable, the sampling trays pass through the sampling point area in sequence to collect samples. The non-sampling point area is equipped with a shielding member for temporarily storing sampling trays waiting to be sampled and those that have already been collected.

[0037] The shielding member includes a support frame and a plate. The support frame is a bracket made of angle steel and is arranged on both sides and the top of the non-sampling point area. The top of the support frame is 5 cm higher than the working table of the automatic sampling turntable; the plate covers the top of the support frame to form a shield, which can prevent water and aerosols from being deposited in the sampling disk in the non-sampling point area (i.e., the sampling disk to be sampled and the sampling disk that has been collected) during the deposition amount collection process of the aerosol deposition experiment.

[0038] Specifically, the plate is a KT board made of polystyrene.

[0039] In a specific embodiment, the number of sampling trays is 6, the sampling tray located in the sampling point area is set as the first sampling tray position, and the positions of the sampling trays placed at the same set intervals in the counterclockwise direction on the automatic sampling turntable are sequentially set as the second sampling tray position, the third sampling tray position, the fourth sampling tray position, the fifth sampling tray position, and the sixth sampling tray position. The second sampling tray position, the third sampling tray position, the fourth sampling tray position, the fifth sampling tray position, and the sixth sampling tray position are located in the non-sampling point area.

[0040] In another specific embodiment, the positions of the sampling disks placed on the automatic sampling turntable in a clockwise direction with the same set spacing are sequentially set as the second sampling disk position, the third sampling disk position, the fourth sampling disk position, the fifth sampling disk position, and the sixth sampling disk position.

[0041] Since the sampling point area is exposed to the simulated experimental environment of the experimental cabin, which includes climatic conditions such as rain and snow, the materials and preparation processes used in the sampler are all designed to be waterproof; at the same time, in order to facilitate the installation, disassembly and waterproofing of the sampler, the motor connectors attached to the linear conveyor and 180° assembly line turning machine also need to be waterproof.

[0042] In a specific embodiment, the motor connector attached to each of the linear conveyors and 180° assembly line turning machines adopts an M25 integrated waterproof connector.

[0043] The controller includes four frequency converters, a relay, and RPi (Raspberry Pi). The software system on the controller is an RPi program installed on the RPi. Each linear conveyor is equipped with a motor, and each 180° assembly line turning machine is equipped with a motor. The motor of each linear conveyor is connected to a frequency converter via a cable, and a frequency converter is used to control the start and stop of each linear conveyor; the motor of each 180° assembly line turning machine is connected to a frequency converter via a cable, and a frequency converter is used to control the start and stop of each 180° assembly line turning machine. In other words, the automatic sampling turntable includes four motors, each of which is controlled by a frequency converter, and all four frequency converters are configured for terminal control. One relay is connected to the terminals of the four frequency converters, and the relay is connected to the RPi. The RPi program installed on the RPi is used to control the conveying time and sampling interval of the automatic sampling turntable, so that the sampler can collect aerosols according to the set sampling interval. During the experiment, the function parameters of the RPi program can be adjusted on the RPi. Four inverters are controlled by the RPi and relays to achieve synchronous control of the two linear conveyors and the two 180° assembly line turning machines, that is, to achieve synchronous control of the automatic sampling turntable.

[0044] Specifically, the common interface terminal (COM terminal) of the inverter is connected to the common interface terminal (COM terminal) of the relay, and the forward interface terminal (FWD terminal, which can also be the reverse interface terminal REV of the inverter) of the inverter is connected to the normally open interface terminal (NO terminal) of the relay. The circuit connection diagram of the inverter, relay and RPi is as follows Figure 2 As shown, specifically, the VCC port of the relay is connected to the 3.3V port of RPi, the GND port of the relay is connected to the GND port (0V port) of RPi, and the IN port of the relay is connected to the GPIO port of RPi.

[0045] In a specific embodiment, when the IN port (i.e., the signal input port) is given a high level, the NC terminal is disconnected and the NO terminal is closed, and the four motor circuits in the sampler form a closed loop. The automatic sampling turntable starts to operate, and the sampling disk to be sampled is transported from the second sampling disk position to the first sampling disk position in the sampling point area (in a specific embodiment, the transport time is set to 6 seconds), and then stays for the set sampling interval time (in a specific embodiment, the sampling interval time is set to 60 seconds), and then the sampled sampling disk is transported to the sixth sampling disk position, and at the same time, the next sampling disk to be sampled is transported from the second sampling disk position to the first sampling disk position; when the IN terminal is given a low level, the NO terminal is disconnected, and the automatic sampling turntable stops working.

[0046] In a specific embodiment, the deceleration and acceleration times of the four frequency converters are set to 0, and the motor of each linear conveyor and the motor of each 180° assembly line turn are set to forward rotation (i.e., the conveying direction is clockwise, and can also be set to reverse rotation according to experimental needs). The frequency of the frequency converter controlling the linear conveyor is set to 70 Hz, and the frequency converter controlling the 180° assembly line turn is set to 45 Hz.

[0047] The main algorithm of the function called by the RPi program is as follows:

[0048]

[0049] Optionally, the maximum number of sampling disks can be set according to the actual sampling number required; the maximum number of sampling disks refers to the number of sampling disks placed on the automatic sampling turntable, and the maximum number of sampling disks can be set to a positive integer within 12 according to actual needs.

[0050] Optionally, the time it takes for the sampling tray to move from the previous position to the next position can be set and adjusted based on the maximum number of sampling trays. The time it takes for the sampling tray to move from the previous position to the next position is the transport time of the automatic sampling turntable. In a specific embodiment, when the maximum number of sampling trays is 6, the time it takes for the sampling tray to move from the previous position to the next position is set to 6 seconds.

[0051] Optionally, the sampling interval can be set and adjusted based on the aerosol's deposition characteristics under different simulated experimental conditions. In a specific embodiment, if some aerosols have a relatively low settling rate under certain set experimental conditions, i.e., the amount of aerosol collected on the collection disk per unit time is relatively small, the sampling interval can be extended based on the aerosol's settling rate.

[0052] In this embodiment, a method for collecting the amount of sedimentation for an aerosol sedimentation experiment is also provided, which is implemented using the sedimentation amount collecting device for an aerosol sedimentation experiment, and includes the following steps:

[0053] S1. Measure the aerosol deposition at the sampling points of the dry deposition control experiment: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, release aerosol into the experimental chamber while turning on the automatic sampling turntable. After the experiment, weigh the tinfoil to obtain the aerosol deposition at the sampling points of the dry deposition control experiment.

[0054] The step S1 comprises the following steps:

[0055] S11. Placing the sampling trays: Cover the sampling trays with weighed tin foil, number the trays in sequence, and then place the sampling trays on the work surface of the automatic sampling turntable in the order of the numbers, arranging the sampling trays at the same set spacing on the center line of the work surface of the automatic sampling turntable;

[0056] In a specific embodiment, the sampling discs are arranged in a counterclockwise direction on the working surface of the automatic sampling turntable in a numbered order. The tin foil covering the surface of the sampling discs is numbered as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6 in sequence.

[0057] S12. Setting RPi program parameters: By setting the time for the sampling disk to move from the previous position to the next position, the automatic sampling turntable can transport the sampling disk to the sampling point area after each operation; and setting the sampling interval time according to the aerosol deposition characteristics under different simulation experimental conditions;

[0058] In a specific embodiment, when the maximum number of sampling trays is 6, the time for the sampling tray to move from the previous position to the next position is set to 6 seconds. That is, after the automatic sampling turntable stops after running for 6 seconds, it can transfer the sampling tray at the second sampling tray position to the first sampling tray position. The sampling interval is set to 60 seconds, that is, the automatic sampling turntable runs once every minute.

[0059] S13. Emitting aerosol dust: Use an aerosol emitter to release aerosol into the experimental chamber space, turn on the automatic sampling turntable at the same time, and record parameters such as aerosol dust emission amount, emission time, and experimental temperature.

[0060] S14. Weigh the tin foil and calculate the aerosol deposition amount at the sampling point of the dry deposition control experiment: After the experiment, remove the tin foil on the surface of the sampling plate, weigh the tin foil that collected the aerosol, subtract the mass of the tin foil from the weighed mass, and calculate the aerosol deposition amount at the sampling point of the dry deposition control experiment (that is, the aerosol deposition amount at the first sampling plate position of the dry deposition control experiment), and record the aerosol deposition amount at the sampling point of the dry deposition control experiment.

[0061] S2. Measure the aerosol deposition at the wet deposition experiment sampling points: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, rain or snow falls in the experimental chamber to release aerosols into the experimental chamber while the automatic sampling turntable is turned on. After the experiment, dry the sampling plates, weigh the tinfoil, and obtain the aerosol deposition at the wet deposition experiment sampling points.

[0062] The step S2 comprises the following steps:

[0063] S21. Arranging the sampling trays: Cover the sampling trays with weighed tin foil, number the trays in sequence, and then place the sampling trays on the work surface of the automatic sampling turntable in the order of the numbers, arranging the sampling trays at the same set spacing on the center line of the automatic sampling turntable;

[0064] In a specific embodiment, the sampling discs are arranged in a counterclockwise direction on the working surface of the automatic sampling turntable in a numbered order. The tin foil covering the surface of the sampling discs is numbered as sample 1, sample 2, sample 3, sample 4, sample 5, and sample 6 in sequence.

[0065] S22. Setting RPi program parameters: By setting the time for the sampling disk to move from the previous position to the next position, the automatic sampling turntable can transport the sampling disk to the sampling point area after each operation; and setting the sampling interval time according to the aerosol deposition characteristics under different simulation experimental conditions;

[0066] In a specific embodiment, when the maximum number of sampling trays is 6, the time for the sampling tray to move from the previous position to the next position is set to 6 seconds. That is, after the automatic sampling turntable stops after running for 6 seconds, it can transfer the sampling tray at the second sampling tray position to the first sampling tray position. The sampling interval is set to 60 seconds, that is, the automatic sampling turntable runs once every minute.

[0067] S23. Rainfall or snowfall: Use the artificial rain or snowfall device configured in the experimental cabin to make rain or snowfall in the experimental cabin space according to the experimental set parameters, and record the parameters such as rainfall or snowfall amount, rainfall time or snowfall time, experimental temperature, etc.

[0068] S24. Emitting aerosol dust: After the rainfall or snowfall stabilizes, use the aerosol emitter to release aerosols into the experimental chamber. At the same time, turn on the automatic sampling turntable and record the aerosol dust emission amount, emission time, water pump pressure from the start to the end of aerosol dust emission, experimental temperature, rainfall or snowfall, and other parameters.

[0069] S25. Dry the sampling tray, weigh the tin foil, and calculate the aerosol deposition at the sampling point of the dry deposition control experiment: After the rainfall or snowfall experiment is completed, place the sampling tray in a drying oven for drying, then remove the tin foil on the surface of the sampling tray, weigh the tin foil that has collected the aerosol, subtract the mass of the tin foil from the weighed mass, and calculate the aerosol deposition at the sampling point of the wet deposition experiment (that is, the aerosol deposition at the first sampling tray position in the wet deposition experiment, which is also the aerosol deposition at the experimental point after rainfall or snowfall), and record the aerosol deposition at the sampling point of the wet deposition experiment.

[0070] The deposition amount collection device and method for aerosol deposition experiments provided by the embodiments of the present invention can collect aerosol deposition amounts in different time periods under different weather conditions during the aerosol deposition process simulated in the experimental cabin under different weather conditions, and is used to study the impact of different meteorological conditions on aerosol deposition. During the experiment, the automatic sampling turntable automatically operates at set sampling intervals, and the sampling turntable collects the aerosol deposition amount during the sampling intervals in sequence. At the same time, the materials, preparation processes, and motor connectors used in the sampler are all waterproof and can operate normally under weather conditions such as rain and snow. In addition, the laboratory door is not opened during the experiment. The start and stop of the artificial rain or snow device configured in the laboratory cabin, the start and stop of the aerosol emitter, and the start and stop control of the automatic sampling turntable are all carried out outside the laboratory cabin to reduce errors caused by the airflow generated by opening and closing the laboratory cabin door. In addition, the working table (i.e., the collection surface) of the automatic sampling turntable is designed to be 30 cm high, as close to the ground as possible, so as to more closely simulate the deposition amount of aerosol settling on the ground.

[0071] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A deposition amount collection device for aerosol deposition experiments, characterized in that: include: A sampler is placed in the experimental cabin, and the sampler includes an automatic sampling turntable, a sampling tray, and a shielding member; the automatic sampling turntable includes two linear conveyors and two 180° assembly line turning machines, the two ends of one of the 180° assembly line turning machines are respectively arranged adjacent to the first ends of the two linear conveyors, and the two ends of the other 180° assembly line turning machine are respectively arranged adjacent to the second ends of the two linear conveyors; the sampling tray is placed on the center line of the work surface of the automatic sampling turntable with the same set spacing; the work surface of the automatic sampling turntable includes a sampling point area and a non-sampling point area, and the non-sampling point area is provided with a shielding member; The controller is placed outside the experimental cabin, and the controller includes four frequency converters, a relay, and RPi; the motor of each linear conveyor is connected to a frequency converter through a cable, and the motor of each 180° assembly line turning machine is connected to a frequency converter through a cable, and one relay is connected to the terminals of the four frequency converters, and the relay is connected to RPi.

2. A deposition amount collection device for aerosol deposition experiments according to claim 1, characterized in that: The linear conveyor and 180° assembly line turning machine are both belt conveyors; The 180° assembly line turning machine uses a solid rubber belt for transportation; The linear conveyor uses an open-hole rubber belt for transportation.

3. The deposition amount collecting device for aerosol deposition experiment according to claim 1, characterized in that: The sampling point area is arranged on one of the linear conveyors of the automatic sampling turntable.

4. The deposition amount collecting device for aerosol deposition experiment according to claim 1, characterized in that: The shielding member includes a support frame and a plate. The support frame is a bracket made of angle steel and is arranged on both sides and the top of the non-sampling point area. The plate covers the top of the support frame.

5. The deposition amount collecting device for aerosol deposition experiment according to claim 1, characterized in that: The motor connectors attached to the linear conveyor and 180° assembly line turning machine adopt M25 integrated waterproof connectors.

6. The deposition amount collecting device for aerosol deposition experiment according to claim 1, characterized in that: The delivery time and sampling interval of the automatic sampling turntable are controlled by an RPi program set on the RPi; The conveying time of the automatic sampling turntable is set according to the number of sampling disks placed on the automatic sampling turntable.

7. The deposition amount collecting device for aerosol deposition experiment according to claim 1, characterized in that: The deceleration and acceleration times of the four inverters are all set to 0; The frequency converter of the linear conveyor is set to 70HZ, and the frequency converter of the 180° assembly line turning machine is set to 45HZ.

8. A method for collecting deposition amount for an aerosol deposition experiment, the method being implemented based on the deposition amount collecting device for an aerosol deposition experiment according to any one of claims 1 to 7, comprising the following steps: S1. Measure the aerosol deposition at the sampling points of the dry deposition control experiment: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, release aerosol into the experimental chamber while turning on the automatic sampling turntable. After the experiment, weigh the tinfoil to obtain the aerosol deposition at the sampling points of the dry deposition control experiment. S2. Measure the aerosol deposition at the wet deposition experiment sampling points: Place sampling plates covered with tinfoil at the same set spacing on the work surface of the automatic sampling turntable. After setting the RPi program parameters, let rain or snow fall in the experimental chamber to release aerosols into the experimental space while turning on the automatic sampling turntable. After the experiment, dry the sampling plates, weigh the tinfoil, and obtain the aerosol deposition at the wet deposition experiment sampling points.

9. The method for collecting deposition amount for aerosol deposition experiment according to claim 8, characterized in that: In steps S1 and S2, the steps of placing the sampling plates covered with tin foil on the working surface of the automatic sampling turntable at the same set intervals and setting the RPi program parameters include the following steps: Place the sampling trays: Cover the surface of the sampling trays with weighed tin foil, and number the tin foil on the surface of the sampling trays in sequence. Then place the sampling trays on the working table of the automatic sampling turntable in the order of the numbers, and arrange the sampling trays at the same set spacing on the center line of the working table of the automatic sampling turntable; Set the RPi program parameters: By setting the time it takes for the sampling disk to move from the previous position to the next position, the automatic sampling turntable can transport the sampling disk to the sampling point area after each operation; and set the sampling interval time based on the deposition characteristics of the aerosol under different simulation experimental conditions.

10. The method for collecting deposition amount for aerosol deposition experiment according to claim 8, characterized in that: In step S1, when releasing aerosol into the experimental chamber, the experimental parameters to be recorded include: aerosol dust emission amount, emission time, and experimental temperature; In step S2, when rain or snow falls in the experimental chamber space and aerosols are released into the experimental chamber space, the experimental parameters that need to be recorded include: aerosol dust emission amount, emission time, water pump pressure from the start to the end of aerosol dust emission, experimental temperature, rainfall or snowfall.

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