Soil surface water content multi-source remote sensing data acquisition device

Abstract

The invention discloses a soil surface water content multi-source remote sensing data acquisition device, and relates to the technical field of soil surface water content metering. The device comprises a rack, telescopic damping rods are mounted at the bottom of the periphery of the rack, damping springs sleeve the outer surfaces of the telescopic damping rods, and a protective cover is mounted in the middle of the lower surface of the rack; the multi-source data acquisition lens is arranged in the protective cover, the multi-source data acquisition lens can be ensured to be accurately aligned with the ground under any flight attitude through the arrangement of the stabilizing mechanism, the measurement angle deviation caused by the steering or attitude change of the unmanned aerial vehicle is avoided, and compared with the prior art, through the design of the scheme, the measurement accuracy is improved. Even under complex or severe environmental conditions, such as strong wind, vibration and the like, the design enables the unmanned aerial vehicle to execute a detection task more stably. Through the damping effect of the telescopic reset plastic sleeve and the reset spring and the vertical angle between the multi-source data acquisition lens and the ground all the time, the unmanned aerial vehicle can maintain the measurement precision and stability under adverse conditions.

Description

Technical Field

[0001] The invention relates to the technical field of soil surface moisture content measurement, in particular to a soil surface moisture content multi-source remote sensing data acquisition device. Background Art

[0002] Soil surface moisture content refers to the amount of water contained in the soil surface, usually expressed as weight moisture content or volume moisture content. There are many methods to measure soil surface moisture content, including drying method, electrical measurement method, etc. These methods have their own advantages and disadvantages, and are suitable for different application scenarios and conditions. By scientifically and rationally monitoring the soil surface moisture content, it can provide important data support for agricultural production, hydrological research, ecological research and climate science research.

[0003] UAV technology has broad application prospects in soil moisture detection. UAVs can be equipped with a variety of sensors, such as multispectral sensors, thermal infrared sensors and microwave radiometers. These sensors can quickly obtain the reflectance spectrum information, thermal radiation information of the soil surface and microwave signals inside the soil.

[0004] However, when existing drones are turning, the detection device installed on the fuselage will also tilt due to the tilt of the fuselage, causing the detection device to be unable to remain perpendicular to the ground. This change in posture will directly affect the sensor's measurement angle of the ground, thereby affecting the accuracy of the measurement data. In addition, when the drone is flying at high speed or performing complex movements, the fuselage and internal components may vibrate, and these vibrations will be transmitted to the sensor, causing fluctuations in the measurement data and deteriorating the data stability.

[0005] In addition, when existing drones are detecting water content in landmarks, they are easily damaged by external factors such as wind, sand, rain, and impact during flight, and these damages may cause sensor failure, lens blur, or mechanical component damage, thus affecting the smooth progress of the detection task. Due to the influence of the external environment, such as dust and water droplets that may adhere to the sensor or lens, blocking or interfering with the measurement signal, resulting in a decrease in measurement accuracy, which will directly affect the accuracy and reliability of the surface water content detection results.

[0006] Therefore, a multi-source remote sensing data acquisition device for soil surface moisture content is proposed to solve the above problems. Summary of the invention

[0007] In view of this, the technical problem to be solved by the present invention is to propose a multi-source remote sensing data acquisition device for soil surface moisture content to solve the problem that the prior art drone cannot continuously measure the surface moisture content and the detection device is not equipped with a protective device.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: a multi-source remote sensing data acquisition device for soil surface moisture content, comprising a frame, telescopic shock-absorbing rods are installed at the bottom of the four sides of the frame, and shock-absorbing springs are sleeved on the outer surface of the telescopic shock-absorbing rods. A protective cover is installed in the middle of the lower surface of the frame, and a multi-source data acquisition lens is installed in the protective cover. The telescopic shock-absorbing rods and the shock-absorbing springs are used for shock-absorbing protection of the multi-source data acquisition lens, and also include a stabilizing mechanism and a lens protection closing and cleaning mechanism. The stabilizing mechanism is arranged on the multi-source data acquisition lens, and the lens protection closing and cleaning mechanism is arranged on the inner wall of the protective cover;

[0009] The stabilization mechanism is used for stabilizing the multi-source data acquisition lens;

[0010] The lens protection closing and cleaning mechanism is used for cleaning and protecting the multi-source data acquisition lens.

[0011] Preferably, the stabilizing mechanism comprises a slide plate, which is symmetrically slidably connected to the inner wall of the protective cover, a first auxiliary rod is rotatably connected to the slide plate, and a swivel is rotatably connected to one end of the first auxiliary rod away from the slide plate.

[0012] Preferably, the inner side wall of the rotating ring away from the connection with the first auxiliary rod is rotatably connected to a second auxiliary rod, the second auxiliary rod is rotatably connected to a stabilizing plate at one end away from the rotating ring, and the multi-source data acquisition lens is installed on the lower surface of the stabilizing plate.

[0013] Preferably, the stabilizing mechanism also includes a telescopic reset plastic sleeve, which is symmetrically fixedly connected to the upper surface of the protective cover, and a reset spring is arranged in the middle of the telescopic reset plastic sleeve, one end of the reset spring is fixedly connected to the bottom of the telescopic reset plastic sleeve, and the other end of the reset spring is fixedly connected to the bottom of the frame.

[0014] Preferably, the lens protection closing and cleaning mechanism includes a turntable shaft, a semi-arc toothed disc is fixedly connected to the outer surface of the middle part of the turntable shaft, the turntable shaft is rotatably connected to the inner wall of the protective cover, an arc-shaped slide groove is opened in the semi-arc toothed disc, a limit rod is slidably connected in the arc-shaped slide groove, the limit rod is symmetrically arranged in the arc-shaped slide groove, and the bottom of the limit rod is rotatably connected to the inner wall of the protective cover.

[0015] Preferably, the lens protection closing and cleaning mechanism also includes a swing arm, one end of which is symmetrically rotatably connected to the outer surface of the turntable of the turntable shaft, and the other end of the swing arm is rotatably connected to a Z-shaped driving plate.

[0016] Preferably, the Z-shaped driving plate is rotatably connected to one end away from the swing arm with a multifunctional closed protective cover, the bottom of the multifunctional closed protective cover close to the Z-shaped driving plate is rotatably connected to a support plate, and the support plate is rotatably connected to the inner wall of the protective cover at one end away from the multifunctional closed protective cover.

[0017] Preferably, the outer periphery of the semi-arc toothed disc is provided with sliding teeth, the sliding tooth surface of the semi-arc toothed disc is meshed with an L-shaped sliding tooth plate, the bottom of the L-shaped sliding tooth plate is slidably connected to the inner wall of the protective cover, and the end of the L-shaped sliding tooth plate away from the semi-arc toothed disc is fixedly connected to the slide plate.

[0018] Compared with the prior art, the multi-source remote sensing data acquisition device for soil surface moisture content provided by the present invention has the following beneficial effects:

[0019] 1. Through the setting of the stabilizing mechanism, it is ensured that the multi-source data acquisition lens can be accurately aimed at the ground in different flight postures, avoiding the measurement angle deviation caused by the turning or posture change of the UAV, which is conducive to obtaining more accurate and stable data and improving the accuracy of surface moisture detection. Compared with the existing technology, through the design of this scheme, even in complex or harsh environmental conditions, such as strong wind, vibration, etc., this design enables the UAV to perform the detection task more stably. The telescopic reset plastic sleeve and the reset spring shock absorption effect and the multi-source data acquisition lens always maintain a vertical angle with the ground, which is conducive to the UAV to maintain measurement accuracy and stability under adverse conditions.

[0020] 2. Through the setting of the lens protection closure and cleaning mechanism, the multifunctional closed protective cover can effectively block the direct invasion of external factors such as wind, sand, rain, dust, etc., and prevent these substances from adhering to the sensor or lens, thereby reducing the risk of equipment damage and reducing the maintenance cost caused by external factors. The cleaning block set on the multifunctional closed protective cover can clean the mirror surface of the multi-source data acquisition lens, which can not only maintain the cleanliness of the sensor and lens and reduce the interference of impurities such as dust and water droplets, but also protect the detection equipment from damage caused by accidental collision or impact, improve the adaptability and stability of the UAV, and at the same time help to ensure that the UAV can perform tasks normally in various environments and reduce the interruption or failure of surface moisture detection due to equipment damage.

[0021] 3. The multi-source data acquisition lens can be synchronously moved upward in the protective cover when the multi-function closed protective cover is closed, which can protect the drone from the risk of accidental collision or damage to a certain extent. Because when the drone encounters an obstacle or needs to make an emergency landing during flight, the closing of the multi-function closed protective cover and the upward movement of the multi-source data acquisition lens can provide additional protection for the drone. The closing of the multi-function closed protective cover and the upward movement of the multi-source data acquisition lens are carried out synchronously, which can not only maintain the stability of the sensor during the detection process, but also reduce the measurement error caused by external interference because the sensor is well protected in the protective chamber;

[0022] When the UAV is detecting the surface moisture content, the design of closing the multi-function closed protective cover and synchronously moving the multi-source data acquisition lens upward in the protective cabin has significant advantages over the existing technology, such as improving detection efficiency, protecting sensors, reducing measurement errors, enhancing adaptability and improving safety. These advantages make UAVs have broader application prospects and higher application value in the field of surface moisture content detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a half-cut schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is an auxiliary schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection relationship of the three-dimensional structure of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the structural connection relationship of the stabilizing mechanism of the present invention;

[0028] Figure 6 This is a schematic diagram of the structural connection relationship of the lens protection, closing and cleaning mechanism of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle.

[0030] In the figure:

[0031] 1. Frame; 11. Telescopic shock-absorbing rod; 12. Shock-absorbing spring; 13. Protective cover; 14. Multi-source data acquisition lens;

[0032] 2. Stabilizing mechanism; 21. Slide plate; 22. First auxiliary rod; 23. Rotating ring; 24. Second auxiliary rod; 25. Stabilizing plate; 26. Telescopic reset plastic sleeve; 27. Reset spring;

[0033] 3. Lens protection closing and cleaning mechanism; 31. Turntable shaft; 32. Semi-arc gear plate; 33. Arc slide groove; 34. Limit rod; 35. Swing arm; 36. Z-type drive plate; 37. Support plate; 38. Multifunctional closing protection cover; 39. L-type sliding gear plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0036] Example

[0037] Please refer to Figures 1 to 7 As shown:

[0038] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a multi-source remote sensing data acquisition device for soil surface moisture content, including a frame 1, a telescopic shock-absorbing rod 11 is installed at the bottom of the four sides of the frame 1, and a shock-absorbing spring 12 is sleeved on the outer surface of the telescopic shock-absorbing rod 11. A protective cover 13 is installed in the middle of the lower surface of the frame 1, and a multi-source data acquisition lens 14 is installed in the protective cover 13. The telescopic shock-absorbing rod 11 and the shock-absorbing spring 12 are used for shock-absorbing protection of the multi-source data acquisition lens 14. The device also includes a stabilizing mechanism 2 and a lens protection closing and cleaning mechanism 3. The stabilizing mechanism 2 is arranged on the multi-source data acquisition lens 14, and the lens protection closing and cleaning mechanism 3 is arranged on the inner wall of the protective cover 13;

[0039] The stabilizing mechanism 2 is used for stabilizing the multi-source data acquisition lens 14;

[0040] The lens protection closing and cleaning mechanism 3 is used for cleaning and protecting the multi-source data acquisition lens 14;

[0041] The stabilizing mechanism 2 includes a slide plate 21, which is symmetrically slidably connected to the inner wall of the protective cover 13, a first auxiliary rod 22 is rotatably connected to the slide plate 21, and a swivel 23 is rotatably connected to the end of the first auxiliary rod 22 away from the slide plate 21;

[0042] The inner side wall of the rotating ring 23 away from the connection with the first auxiliary rod 22 is rotatably connected to the second auxiliary rod 24, and one end of the second auxiliary rod 24 away from the rotating ring 23 is rotatably connected to the stable plate 25, and the multi-source data acquisition lens 14 is installed on the lower surface of the stable plate 25;

[0043] The stabilizing mechanism 2 further includes a telescopic reset plastic sleeve 26, which is symmetrically fixedly connected to the upper surface of the protective cover 13, and a reset spring 27 is arranged in the middle of the telescopic reset plastic sleeve 26, one end of the reset spring 27 is fixedly connected to the bottom of the telescopic reset plastic sleeve 26, and the other end of the reset spring 27 is fixedly connected to the bottom of the frame 1;

[0044] Among them: a plurality of sensors are installed in the multi-source data acquisition lens 14, wherein the sensors can capture the reflectance spectrum information, thermal radiation information, etc. of the soil surface, and transmit the data to the ground control station or storage device for storage.

[0045] In the prior art, during the turning process of the existing UAV, due to the inclination of the fuselage, the detection device installed on the fuselage will also incline accordingly, resulting in the detection device being unable to remain perpendicular to the ground. This change in posture will directly affect the sensor's measurement angle of the ground, thereby affecting the accuracy of the measurement data. Moreover, when the UAV is flying at high speed or performing complex actions, the fuselage and internal components may vibrate, and these vibrations will be transmitted to the sensor, causing the measurement data to fluctuate, making the data stability worse. Compared with the prior art, through the implementation of this embodiment, it is ensured that the multi-source data acquisition lens 14 can be accurately aligned with the ground in any flight posture, avoiding the measurement angle deviation caused by the turning or posture change of the UAV, which helps to obtain more accurate and stable data and improve the accuracy of surface water content detection. Compared with the prior art, through the design of this solution, even under complex or harsh environmental conditions, such as strong wind, vibration, etc., this design enables the UAV to perform the detection task more stably. The shock absorbing effect of the telescopic reset plastic sleeve 26 and the reset spring 27 and the multi-source data acquisition lens 14 always maintaining a vertical angle with the ground are conducive to the UAV maintaining measurement accuracy and stability under adverse conditions.

[0046] For further examples, please refer to Figures 1 to 7 As shown:

[0047] The lens protection closing cleaning mechanism 3 includes a turntable shaft 31, a semi-arc gear disc 32 is fixedly connected to the outer surface of the middle part of the turntable shaft 31, the turntable shaft 31 is rotatably connected to the inner wall of the protective cover 13, an arc-shaped slide groove 33 is opened in the semi-arc-shaped gear disc 32, a limit rod 34 is slidably connected in the arc-shaped slide groove 33, the limit rod 34 is symmetrically arranged in the arc-shaped slide groove 33, and the bottom of the limit rod 34 is rotatably connected to the inner wall of the protective cover 13;

[0048] The lens protection closing cleaning mechanism 3 also includes a swing arm 35, one end of the swing arm 35 is symmetrically rotatably connected to the outer surface of the turntable of the turntable shaft 31, and the other end of the swing arm 35 is rotatably connected to a Z-shaped driving plate 36;

[0049] The end of the Z-shaped driving plate 36 away from the swing arm 35 is rotatably connected to a multifunctional closed protective cover 38, and the bottom of the multifunctional closed protective cover 38 close to the Z-shaped driving plate 36 is rotatably connected to a support plate 37, and the end of the support plate 37 away from the multifunctional closed protective cover 38 is rotatably connected to the inner wall of the protective cover 13;

[0050] The outer periphery of the semi-arc toothed disc 32 is provided with sliding teeth, and the sliding tooth surface of the semi-arc toothed disc 32 is meshed with an L-shaped sliding tooth plate 39, the bottom of the L-shaped sliding tooth plate 39 is slidably connected to the inner wall of the protective cover 13, and one end of the L-shaped sliding tooth plate 39 away from the semi-arc toothed disc 32 is fixedly connected to the slide plate 21;

[0051] Among them: the lens protection closing cleaning mechanism 3 is symmetrically arranged on the inner wall of the protective cover 13, the motor is installed on the outer surface of the protective cover 13, and the motor driving shaft is fixedly connected to the turntable shaft 31.

[0052] In the prior art, when the UAV is detecting the surface moisture content, it is easily damaged by external factors such as wind, sand, rain, and collision during flight, and these damages may cause sensor failure, lens blur or mechanical component damage, thereby affecting the smooth progress of the detection task. Due to the effects of the external environment, dust, water droplets, etc. may adhere to the sensor or lens, blocking or interfering with the measurement signal, resulting in a decrease in measurement accuracy, which will directly affect the accuracy and reliability of the surface moisture content detection result. Compared with the prior art, through the implementation of this embodiment, the multi-function closed protective cover 38 can be closed while the multi-source data acquisition lens 14 can be synchronously moved up in the protective cover 13, which can protect the UAV from the risk of accidental collision or damage to a certain extent. Because when the UAV encounters an obstacle or needs to make an emergency landing during flight, the closing of the multi-function closed protective cover 38 and the upward movement of the multi-source data acquisition lens 14 can provide additional protection for the UAV. The closing of the multi-function closed protective cover 38 and the upward movement of the multi-source data acquisition lens 14 are performed synchronously, which can not only maintain the stability of the sensor during the detection process, but also reduce the measurement error caused by external interference because the sensor is well protected in the protective chamber.

[0053] Everything in the above example works like this:

[0054] In the initial state: the frame 1 is in the flight state, and the multifunctional closed protective cover 38 is in the open state at the bottom of the protective cover 13.

[0055] The following is the working process of the stabilization mechanism 2 for stabilizing the multi-source data acquisition lens 14:

[0056] During use, when the frame 1 is taking off to collect data on the surface moisture content of different areas of the land, the multi-spectral camera, thermal infrared camera and other sensors installed in the multi-source data acquisition lens 14 carried by the frame 1 collect data through the bottom of the multi-source data acquisition lens 14 according to the predetermined route and altitude during the flight. Because the frame 1 is turning, the flight altitude of the drone will vibrate slightly. When the drone makes a sharp turn, its turning radius will decrease accordingly. At this time, in order to maintain the stability and directionality of the turn, the drone needs a stronger lateral thrust or lift to adjust its attitude. However, this strong attitude adjustment is often accompanied by disturbances in the vertical direction, resulting in temporary instability in the altitude control. At this time, the drone can be adjusted by the following method: Figure 4 As shown, when the frame 1 turns due to the above reasons, the frame 1 as a whole tilts at a certain angle and vibrates at the same time. When the body vibrates, one end of the telescopic reset plastic sleeve 26 is fixedly connected to the upper surface of the protective cover 13 and the other end is fixedly connected to the bottom of the frame 1. At the same time, one end of the reset spring 27 arranged in the middle of the telescopic reset plastic sleeve 26 is fixedly connected to the bottom of the telescopic reset plastic sleeve 26, and the other end is fixedly connected to the bottom of the frame 1. When the frame 1 shakes, the reset spring 27 itself has a certain elasticity and can absorb and store vibration energy. Since the telescopic reset plastic sleeve 26 is made of rubber, the telescopic reset plastic sleeve 26 can increase the damping of the system and make the vibration energy decay faster. Since the telescopic reset plastic sleeve 26 is wrapped outside the reset spring 27, the two can work together to improve the shock absorption effect. This combined use method can not only reduce the impact of vibration on the system, but also improve the stability of the system.

[0057] Analysis: When the frame 1 tilts at a certain angle during steering, because the first auxiliary rod 22 is rotatably connected to the two ends of the swivel 23, and the second auxiliary rod 24 is rotatably connected to the inner ring wall of the swivel 23, and because the multi-source data acquisition lens 14 is installed on the stabilizing plate 25, when the frame 1 drives the protective cover 13 to tilt as a whole, because the stabilizing plate 25 is rotated in the middle of the swivel 23 through the second auxiliary rod 24, when the protective cover 13 tilts at a certain angle, the stabilizing plate 25 always keeps the angle perpendicular to the ground. At this time, the torque generated by the swivel 23 and the protective cover 13 will always be balanced by the stabilizing plate 25 under its own gravity, so that the stabilizing plate 25 drives the multi-source data acquisition lens 14 to always remain perpendicular to the ground. At the same time, when the multi-source data acquisition lens 14 of the sensor for surface water content detection on the drone is installed on the stabilizing plate 25 of the balancing mechanism, due to the connection method between the swivel 23 and the stabilizing plate 25, when the drone as a whole including the protective cover 13 thereon tilts, the balancing mechanism can use its own gravity to automatically adjust its posture.

[0058] This allows the drone to always maintain a vertical angle with the ground for measurement when detecting surface moisture content through the multi-source data acquisition lens 14. This adjustment mechanism ensures that no matter how the drone tilts, the stabilizing plate 25 will maintain an angle vertical to the ground. Therefore, the multi-source data acquisition lens 14 of the measuring unit installed on the stabilizing plate 25 can also always maintain vertical measurement of the ground, thereby greatly improving the accuracy of data acquisition. Compared with the prior art, through the design of this solution, even under complex or harsh environmental conditions, such as strong winds, vibrations, etc., this design enables the drone to perform detection tasks more stably. The shock-absorbing effect of the telescopic reset plastic sleeve 26 and the reset spring 27 and the multi-source data acquisition lens 14 always maintaining a vertical angle with the ground are beneficial for the drone to maintain measurement accuracy and stability under adverse conditions.

[0059] Please refer to the above working process Figures 1 to 7 .

[0060] The following is the working process of the lens protection closing cleaning mechanism 3 for cleaning and protecting the multi-source data acquisition lens 14:

[0061] During use, because a humidity sensor is installed on the upper surface of the multifunctional closed protective cover 38, when the humidity in the air is high, in order to prevent the multi-source data acquisition lens 14 from being eroded by rain, since there is an electrical connection between the motor and the sensor arranged on the multifunctional closed protective cover 38, the electrical signal of the sensor is transmitted to the motor, and the motor is controlled by the internal controller of the motor to start rotating counterclockwise. When the motor rotates counterclockwise, because the turntable shaft 31 is fixedly connected to the motor drive shaft, the counterclockwise rotation of the motor drive shaft will drive the turntable shaft 31 to start rotating counterclockwise.

[0062] Because the outer surface of the middle part of the turntable shaft 31 is fixedly connected to the semi-arc gear plate 32, when the turntable shaft 31 rotates counterclockwise, the semi-arc gear plate 32 will also start to rotate in the same direction. At this time, because the outer periphery of the semi-arc gear plate 32 is evenly provided with sliding teeth, and the tooth surface of the sliding teeth is meshed with the tooth surface of the L-shaped sliding tooth plate 39, and the L-shaped sliding tooth plate 39 is slidably connected to the inner wall of the protective cover 13, when the semi-arc gear plate 32 rotates counterclockwise, it will drive the L-shaped sliding tooth plate 39 to start sliding downward on the inner wall of the protective cover 13, such as Figure 6 As shown, because the L-shaped sliding tooth plate 39 is fixedly connected to the slide plate 21 at one end away from the semi-arc gear plate 32, the sliding downward of the L-shaped sliding tooth plate 39 will drive the slide plate 21 to drive the multi-source data acquisition lens 14 to slide downward on the inner wall of the multi-source data acquisition lens 14;

[0063] At the same time, because the swing arm 35 symmetrically connected to the outer periphery of the turntable shaft 31 is rotatably connected to the Z-type drive plate 36, and the Z-type drive plate 36 is rotatably connected to the multifunctional closed protective cover 38 at one end away from the swing arm 35, the counterclockwise rotation of the turntable shaft 31 will drive the swing arm 35 to push the Z-type drive plate 36 to the left. At this time, because the multifunctional closed protective cover 38 is rotatably connected to the support plate 37 on the side close to the Z-type drive plate 36, and the support plate 37 is rotatably connected to the inner wall of the protective cover 13, the swing arm 35 rotates counterclockwise around the turntable shaft 31 to the left. The movement will drive the support plate 37 to start rotating clockwise on the inner wall of the protective cover 13. When the swing arm 35 rotates counterclockwise until the arc-shaped slot 33 squeezes the limit rod 34, the semi-arc-shaped toothed disc 32 will stop rotating due to the blocking of the limit rod 34 by the arc-shaped slot 33. At the same time, because the limit rod 34 is electrically connected to the motor, the limit rod 34 will be pressed by the arc-shaped slot 33 and the limit rod 34. At this time, the motor will stop running through the electrical connection between 34. At this time, the multifunctional closed protective cover 38 and the protective cover 13 are closed to each other. Figure 6 As shown, the multi-source data acquisition lens 14 will slide in the protective cover 13 away from the side 38 at the same time;

[0064] At the same time, because cleaning blocks are evenly arranged on the surface of the multifunctional closed protective cover 38, when the multifunctional closed protective cover 38 and the protective cover 13 are closed to each other, the mirror surface of the multi-source data acquisition lens 14 and the cleaning block at the bottom of the multifunctional closed protective cover 38 fit each other. When the rack 1 and the equipment thereon are in operation, due to the interaction of various mechanical and electrical components, certain vibrations will be generated. At this time, the stabilizing mechanism 2 absorbs and disperses these vibration energies to ensure the stable operation of the equipment and the accuracy of data acquisition. However, it does not completely eliminate all vibrations, but allows tiny, controllable jitters to exist. It is these tiny jitters that create a dynamic environment between the multi-source data acquisition lens 14 and the multifunctional closed protective cover 38. Due to this small-amplitude jitter, reciprocating small-distance friction will occur between the mirror surface of the lens 14 and the cleaning block at the bottom of the protective cover 38. This friction is similar to a miniature physical cleaning process, which can continuously remove tiny impurities, dust and other contaminants attached to the surface of the lens.

[0065] In this way, the mirror surface of the lens 14 can be kept relatively clean, reducing the measurement error caused by the accumulation of impurities and dust in the air. This is not only of great significance for improving the accuracy of data acquisition and the overall performance of the system, but also this self-cleaning mechanism reduces the frequency and cost of manual cleaning and improves the maintenance efficiency and reliability of the equipment.

[0066] When the drone is in use for landing, the telescopic shock-absorbing rod 11 gradually contacts the ground and the shock-absorbing spring 12 acts as a buffer, so that the multi-source data acquisition lens 14 can be protected as a whole. At the same time, since there is an electrical connection between the telescopic shock-absorbing rod 11 and the motor, when the telescopic shock-absorbing rod 11 is pressed, the motor will rotate counterclockwise. At this time, the compression of the telescopic shock-absorbing rod 11 will drive the motor to rotate counterclockwise, so that the motor drives the multifunctional closed protective cover 38 to close in the protective cover 13. The lens protection closing cleaning mechanism 3 is set, and the protective closing of the multifunctional closed protective cover 38 can effectively block wind, sand, rain, and dust. The multi-function closed protective cover 38 can be used to clean the mirror surface of the multi-source data acquisition lens 14, which can not only maintain the cleanliness of the sensor and the lens, reduce the interference of impurities such as dust and water droplets, but also protect the detection equipment from damage caused by accidental collision or impact, improve the adaptability and stability of the UAV, and ensure that the UAV can perform tasks normally in various environments, reducing the interruption or failure of surface moisture detection due to equipment damage.

[0067] By closing the multifunctional closed protective cover 38, the multi-source data acquisition lens 14 can be synchronously moved upward in the protective cover 13, which can protect the drone from the risk of accidental collision or damage to a certain extent. Because when the drone encounters an obstacle or needs to make an emergency landing during flight, the closing of the multifunctional closed protective cover 38 and the upward movement of the multi-source data acquisition lens 14 can provide additional protection for the drone. The closing of the multifunctional closed protective cover 38 and the upward movement of the multi-source data acquisition lens 14 are carried out synchronously, which can not only maintain the stability of the sensor during the detection process, but also reduce the measurement error caused by external interference because the sensor is well protected in the protective chamber. Compared with the existing technology, it has significant advantages such as improving detection efficiency, protecting sensors, reducing measurement errors, enhancing adaptability and improving safety. These advantages make drones have broader application prospects and higher application value in the field of surface moisture content detection.

[0068] Please refer to the above working process Figures 1 to 7 .

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-source remote sensing data acquisition device for soil surface moisture content, installed on a frame (1) for accurate data acquisition of soil surface moisture content, wherein a telescopic shock absorbing rod (11) is installed at the bottom of the frame (1), and a shock absorbing spring (12) is sleeved on the outer surface of the telescopic shock absorbing rod (11), and a protective cover (13) is installed in the middle of the lower surface of the frame (1), characterized in that: A multi-source data acquisition lens (14) is installed in the protective cover (13); the telescopic shock-absorbing rod (11) and the shock-absorbing spring (12) are used for shock-absorbing protection of the multi-source data acquisition lens (14); the stabilizing mechanism (2) and the lens protection closing and cleaning mechanism (3) are arranged on the multi-source data acquisition lens (14); and the lens protection closing and cleaning mechanism (3) is arranged on the inner wall of the protective cover (13); The stabilizing mechanism (2) is used to stabilize a multi-source data acquisition lens (14); The lens protection, closing and cleaning mechanism (3) is used for cleaning and protecting the lens of a multi-source data acquisition lens (14).

2. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 1 is characterized in that: The stabilizing mechanism (2) comprises a slide plate (21) which is symmetrically slidably connected to the inner wall of the protective cover (13); a first auxiliary rod (22) is rotatably connected to the slide plate (21); and a swivel (23) is rotatably connected to one end of the first auxiliary rod (22) away from the slide plate (21).

3. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 2 is characterized in that: The inner side wall of the rotating ring (23) away from the connection with the first auxiliary rod (22) is rotatably connected to a second auxiliary rod (24); one end of the second auxiliary rod (24) away from the rotating ring (23) is rotatably connected to a stabilizing plate (25); and the multi-source data acquisition lens (14) is mounted on the lower surface of the stabilizing plate (25).

4. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 3 is characterized by: The stabilizing mechanism (2) further comprises a telescopic reset plastic sleeve (26), the telescopic reset plastic sleeve (26) being symmetrically fixedly connected to the upper surface of the protective cover (13), a reset spring (27) being arranged in the middle of the telescopic reset plastic sleeve (26), one end of the reset spring (27) being fixedly connected to the bottom of the telescopic reset plastic sleeve (26), and the other end of the reset spring (27) being fixedly connected to the bottom of the frame (1).

5. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 1 is characterized by: The lens protection closing cleaning mechanism (3) comprises a turntable shaft (31), a semi-arc toothed disc (32) is fixedly connected to the outer surface of the middle part of the turntable shaft (31), the turntable shaft (31) is rotatably connected to the inner wall of the protective cover (13), an arc-shaped slide groove (33) is provided in the semi-arc-shaped toothed disc (32), a limit rod (34) is slidably connected in the arc-shaped slide groove (33), the limit rod (34) is symmetrically arranged in the arc-shaped slide groove (33), and the bottom of the limit rod (34) is rotatably connected to the inner wall of the protective cover (13).

6. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 5, characterized in that: The lens protection closing cleaning mechanism (3) also includes a swing arm (35), one end of which is symmetrically rotatably connected to the outer surface of the turntable of the turntable shaft (31), and the other end of which is rotatably connected to a Z-shaped driving plate (36).

7. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 6, characterized in that: The end of the Z-shaped driving plate (36) away from the swing arm (35) is rotatably connected to a multifunctional closed protective cover (38), the bottom of the multifunctional closed protective cover (38) close to the Z-shaped driving plate (36) is rotatably connected to a support plate (37), and the end of the support plate (37) away from the multifunctional closed protective cover (38) is rotatably connected to the inner wall of the protective cover (13).

8. The multi-source remote sensing data acquisition device for soil surface moisture content according to claim 7, characterized in that: The outer periphery of the semi-arc toothed disc (32) is provided with sliding teeth, the sliding tooth surface of the semi-arc toothed disc (32) is meshed with an L-shaped sliding tooth plate (39), the bottom of the L-shaped sliding tooth plate (39) is slidably connected to the inner wall of the protective cover (13), and one end of the L-shaped sliding tooth plate (39) away from the semi-arc toothed disc (32) is fixedly connected to the slide plate (21).

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