Wheel flying dust simulation device used in lunar dust cabin and use method of wheel flying dust simulation device

Abstract

The invention provides a wheel flying dust simulation device used in a lunar dust cabin and a use method thereof, and belongs to the technical field of spaceflight science tests. The problem of how to design a device capable of simulating dust raising of wheels in the lunar environment on the ground so as to research dust raising characteristics and provide a reference basis for design and operation of a patroller is solved. According to the specific structure, simulated lunar soil is evenly sprayed in a lunar soil tank, a fixing support is fixed to the lunar soil tank, a sliding platform slides on a sliding rail of the fixing support, the lower portion of the sliding platform is connected with a wheel fixing platform through a lifting mechanism, wheels are installed below the wheel fixing platform, and a stepping motor and a high-speed camera are fixed to the wheel fixing platform. The stepping motor is connected with a wheel, a moon dust attachment plate is installed on one side of the fixing support, particle counting sensors are installed on the two sides of the moon dust attachment plate, and a laser radar is arranged above the particle counting sensors. The device can be used in a lunar dust cabin to realize three-dimensional observation of flying dust of wheels at different traveling speeds in a lunar environment.

Description

Technical Field

[0001] This invention belongs to the field of aerospace science and experiment technology, and relates to a wheel dust simulation device, particularly a wheel dust simulation device used in a lunar dust chamber and its usage method. Background Technology

[0002] During lunar exploration missions, the rovers' wheels generate dust as they travel on the lunar surface, which can affect the rover's operating environment, critical components, and the smooth progress of the mission. However, the lunar environment differs significantly from Earth's, including features such as vacuum and low gravity. Therefore, a device is needed to simulate lunar wheel dust on Earth to study its characteristics and provide a reference for the design and operation of the rover. Summary of the Invention

[0003] In view of this, in order to solve the technical problems mentioned in the background, the present invention proposes a wheel dust simulation device for use in a lunar dust chamber, which can accurately simulate the dust phenomenon when the wheel is running under simulated lunar environment conditions, and measure parameters such as dust height, providing strong support for related research.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a wheel dust simulation device for use in a lunar dust chamber, comprising a lunar soil tank, a fixed bracket, a sliding platform, a lunar dust adhesion plate, a particle counting sensor, a lidar, a wheel, a lifting mechanism, a high-speed camera, a stepper motor, and a wheel fixing platform. Simulated lunar soil is evenly sprinkled in the lunar soil tank. A fixed support is fixed on the lunar soil tank, and a slide rail is fixed on the fixed support. The sliding platform slides on the slide rail. A wheel fixing platform is connected to the sliding platform below through a lifting mechanism. A wheel is installed below the wheel fixing platform. A stepper motor and a high-speed camera are fixed on the wheel fixing platform. The stepper motor is connected to the wheel, and the speed of the wheel is controlled by changing the speed of the stepper motor. A lunar dust attachment plate is installed on one side of a fixed bracket, with particle counting sensors installed on both sides of the lunar dust attachment plate and a lidar arranged above it.

[0005] Furthermore, the high-speed camera is positioned in the opposite direction to the direction of the wheels' travel.

[0006] Furthermore, the two particle counting sensors are arranged symmetrically.

[0007] Furthermore, glass is installed at the front and back of the fixed bracket.

[0008] Furthermore, the lunar dust adhesion plate is made of alumina ceramic material.

[0009] A method for using a wheel dust simulation device in a lunar dust chamber involves connecting the wheel to a wheel fixing platform, controlling a lifting mechanism to make the wheel contact the simulated lunar soil in the lunar soil trough, turning on the particle counting sensor, lidar, and high-speed camera, adjusting the speed of the stepper motor, calculating the corresponding wheel speed and travel speed, turning on the stepper motor, and after traveling a corresponding distance, the particle counting sensor acquires data and simultaneously records the position and distribution of lunar dust on the lunar dust attachment plate.

[0010] Furthermore, the post-processing of data acquired by the particle counting sensor includes using a filtering algorithm to remove noise data from particle number and distribution data in different particle size ranges, replacing outliers, using the processed data to reflect the concentration parameters and particle size distribution characteristics of lunar dust particles, and using existing data to fit the particle size distribution.

[0011] Compared with the prior art, the beneficial effects of the wheel dust simulation device and its method of use in the lunar dust chamber described in this invention are: This invention can be used in a lunar dust chamber to achieve three-dimensional observation of dust generated by wheels traveling at different speeds in a lunar environment. The particle counting sensor can monitor the size and concentration of dust in real time, and the lidar can acquire the distribution of dust inside the device. By processing the sensor data and combining it with images from a high-speed camera, the three-dimensional process of the dust field can be reconstructed. Attached Figure Description

[0012] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a perspective view of the wheel dust simulation device used in the lunar dust chamber according to the present invention; Figure 2 This is a schematic diagram of the structure of the wheel dust simulation device used in the lunar dust chamber according to the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the structure of the wheel dust simulation device used in the lunar dust chamber according to the present invention. Figure 2 ; Figure 4 This is a structural diagram of the control system for the wheel dust simulation device used in the lunar dust chamber according to the present invention; Figure 5 This is a wiring diagram of the wheel dust simulation device used in the lunar dust chamber according to the present invention; Figure 6 This is a schematic diagram of the support arm described in this invention; Figure 7 This is a bottom view of the wheel dust simulation device used in the lunar dust chamber according to the present invention; In the diagram: 1-Lunar soil trough; 2-Fixed bracket; 3-Simulated lunar soil; 4-Sliding platform; 5-Lunar dust attachment plate; 6-Particle counting sensor; 7-LiDAR; 8-Wheel; 9-Lifting mechanism; 10-High-speed camera; 11-Slide rail; 12-Transmission mechanism; 13-Stepper motor; 14-Wheel fixing platform; 15-Support arm. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other, and the described embodiments are only some embodiments of the present invention, not all embodiments.

[0014] See Figure 1-7 This embodiment describes a wheel dust simulation device used in a lunar dust chamber. Simulated lunar soil 3 is evenly sprinkled into a lunar soil trough 1. A fixed bracket 2 is bolted to the lunar soil trough 1. A sliding platform 4 is connected to a double slide rail 11 above the fixed bracket 2, allowing for free horizontal sliding. The wheel fixing platform 14 and the sliding platform 4 are connected by a lifting mechanism 9. The lifting mechanism 9 can adjust the height of the wheel fixing platform 14 in real time to control whether the wheel 8 contacts the simulated lunar soil. A stepper motor 13 is fixed to the wheel fixing platform 14, and the speed of the wheel 8 is controlled by changing the rotation speed of the stepper motor 13.

[0015] The stepper motor 13 and the wheel 8 are connected by a chain drive to ensure transmission reliability. The high-speed camera 10 on the wheel fixing platform 14 is positioned opposite to the direction of travel of the wheel 8, mainly capturing the dust generation process during the movement of the wheel 8 and the maximum height that the dust can reach. The wheel type can be changed to monitor different types of dust phenomena.

[0016] The ground and sides of the fixed bracket 2 are plate-shaped structures, and glass is installed on the front, back and top surfaces for easy observation. The remaining sides are equipped with lunar dust attachment plates 5, and particle counting sensors 6 are symmetrically installed on both sides of the lunar dust attachment plates 5. A lidar 7 is arranged above.

[0017] The particle counting sensor 6 monitors the concentration and particle size of dust.

[0018] A lidar 7 is deployed above the lunar dust attachment plate 5 to acquire information on the distribution of dust fields within the device.

[0019] The lunar dust adhesion plate 5 is made of alumina ceramic material, which can better simulate the adhesion of lunar dust and can more accurately test the amount of lunar dust adhesion.

[0020] The bottom of the fixed bracket 2 is equipped with a support arm 15, which is connected to the bottom platform of the lunar dust chamber.

[0021] Method of using the wheel dust simulation device in the lunar dust chamber described in this invention: The wheel 8 is connected to the wheel fixing platform 14. The lifting mechanism 9 is controlled to make the wheel 8 contact the simulated lunar soil 3 in the lunar soil trough 1. The particle counting sensor 6, lidar 7 and high-speed camera 10 are turned on. The speed of the stepper motor 13 is adjusted to calculate the corresponding wheel speed and travel speed. The stepper motor 13 is turned on. After traveling a corresponding distance, the data acquired by the particle counting sensor 6 is processed. This includes using a filtering algorithm to remove noise data from the particle number and distribution data in different particle size ranges, replacing outliers, and using the processed data to reflect the concentration parameters and particle size distribution characteristics of lunar dust particles. The particle size distribution is fitted using the existing data. At the same time, the position and distribution of lunar dust on the lunar dust attachment plate 5 are recorded.

[0022] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A wheel dust simulation device for use in a lunar dust chamber, characterized in that: The system includes a lunar soil trough (1), a fixed bracket (2), a sliding platform (4), a lunar dust attachment plate (5), a particle counting sensor (6), a lidar (7), a wheel (8), a lifting mechanism (9), a high-speed camera (10), a stepper motor (13), and a wheel fixing platform (14). Simulated lunar soil (3) is evenly sprinkled in the lunar soil trough (1). A fixed bracket (2) is fixed on the lunar soil trough (1). A slide rail (11) is fixed on the fixed bracket (2). The sliding platform (4) slides on the slide rail (11). The wheel fixing platform (14) is connected to the sliding platform (4) below through the lifting mechanism (9). A wheel (8) is installed below the wheel fixing platform (14). A stepper motor (13) and a high-speed camera (10) are fixed on the wheel fixing platform (14). The stepper motor (13) is connected to the wheel (8). The speed of the wheel (8) is controlled by changing the speed of the stepper motor (13). A lunar dust attachment plate (5) is installed on one side of the fixed bracket (2), and particle counting sensors (6) are installed on both sides of the lunar dust attachment plate (5), with a lidar (7) arranged above it.

2. The wheel dust simulation device for use in a lunar dust chamber according to claim 1, characterized in that: The high-speed camera (10) is positioned in the opposite direction to the direction of travel of the wheel (8).

3. The wheel dust simulation device for use in a lunar dust chamber according to claim 1, characterized in that: The two particle counting sensors (6) are arranged symmetrically.

4. The wheel dust simulation device for use in a lunar dust chamber according to claim 1, characterized in that: The fixed bracket (2) is fitted with glass at the front and back.

5. The wheel dust simulation device for use in a lunar dust chamber according to claim 1, characterized in that: The lunar dust attachment plate (5) is made of alumina ceramic material.

6. The wheel dust simulation device for use in a lunar dust chamber according to claim 1, characterized in that: The fixed bracket (2) is equipped with a support arm (15) at the bottom, which is connected to the bottom platform of the lunar dust chamber.

7. A method of using a wheel dust simulation device in a lunar dust chamber as described in any one of claims 1-6, characterized in that: Connect the wheel (8) to the wheel fixing platform (14), control the lifting mechanism (9) to make the wheel (8) contact the simulated lunar soil (3) in the lunar soil trough (1), turn on the particle counting sensor (6), the lidar (7) and the high-speed camera (10), adjust the speed of the stepper motor (13), calculate the corresponding wheel speed and travel speed, turn on the stepper motor (13), after traveling a corresponding distance, the particle counting sensor (6) acquires data, and at the same time records the position and distribution of lunar dust on the lunar dust attachment plate (5).

8. The method of using the wheel dust simulation device in the lunar dust chamber according to claim 7, characterized in that: The particle counting sensor (6) acquires data and then processes the data, including using a filtering algorithm to remove noise points from the particle number and distribution data in different particle size ranges, replacing outliers, using the processed data to reflect the concentration parameters and particle size distribution characteristics of lunar dust particles, and using existing data to fit the particle size distribution.

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