Plant planting device in microgravity environment and control system

Abstract

The invention relates to a plant planting device and control system in a microgravity environment. The plant planting device comprises a shell, and a rotary supporting device is arranged in the shell; a plant planting device is arranged on the rotary supporting device, the plant planting device comprises a plant planting plate, a planting module is arranged on the plant planting plate, planted plants are arranged on the planting module, and the rotary supporting device drives the plants and the plants to rotate in the space environment. According to the plant planting device in the microgravity environment, the growth requirements of different types of plants are met, and the plant survival conditions are improved. The device provides a condition for simulating the gravity of the earth for plants in the space environment, can improve the efficiency of space breeding, and enables space breeding to be more suitable for the growth environment of the earth. Aiming at the adverse effect of a space weightlessness or microgravity environment on plant growth, an artificial gravity environment is created for plants by rotating a centripetal force combination device, and the device has the characteristics of small size, low cost, small occupied area and suitability for three-dimensional planting, and is widely applied to space planting.

Description

Technical Field

[0001] The present invention relates to the field of space breeding, and in particular to a plant planting device and a control system in a microgravity environment. Background Art

[0002] Plant gravitropism refers to the response of plants to the pull of gravity by adjusting their growth direction to adapt to the gravitational environment. This characteristic is crucial for plant growth and development because it determines the growth direction of plant organs such as roots and stems, which in turn affects processes such as plant fixation, absorption of water and nutrients, and photosynthesis.

[0003] After plants sense gravity, the asymmetric distribution of auxin is a key factor in regulating the plant's gravitropic growth. The distribution of auxin in the plant body determines the growth direction of plant organs, such as the curved growth of roots and stems.

[0004] The eco-tank carried by the lunar probe Chang'e 4 can reflect the growth of cotton seedlings in the low gravity environment on the moon. It can generally reflect the growth and change characteristics of plants in a microgravity environment. And the multi-physics field characteristics of lunar soil water ice thermal mining and the optimal heating temperature research. Because gravity has a significant impact on plant growth, in the microgravity environment of space, space microgravity cannot be adjusted, and plant growth has certain limitations. In order to obtain better living conditions, plants need a plant growth device that can adjust microgravity. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a plant planting system in a microgravity environment that meets the growth requirements of different types of plants and improves the living conditions of plants.

[0006] The technical solution adopted by the present invention is:

[0007] A plant planting device in a microgravity environment,

[0008] It includes: a shell, a rotating support device is arranged inside the shell; a plant planting device is arranged on the rotating support device, the plant planting device includes a plant planting plate, a planting module is arranged on the plant planting plate, and the planting module is provided with planted plants, and the rotating support device drives the plants to rotate in the space environment.

[0009] Preferably, the rotary support device comprises:

[0010] Support base and support plate;

[0011] The support base is provided with a support column; the top end of the support column is connected to the support plate;

[0012] The support plate includes a support bearing and a support frame;

[0013] The support frame is connected to the inner ring of the support bearing;

[0014] A driving motor is arranged in the middle of the supporting base, and an output shaft of the driving motor is connected to the center of the supporting frame;

[0015] The outer ring of the support bearing is connected to the support column;

[0016] The support frame includes a support base, and a support arm is arranged on the support base;

[0017] The support arms are arranged radially;

[0018] A movable counterweight block is arranged on the support arm, and the movable counterweight block is connected to the lead screw nut pair;

[0019] The lead screw nut pair is connected to the stepper motor; the movable counterweight block is adjusted at the support arm position through the lead screw nut pair, thereby adjusting the dynamic balance of the rotating support frame.

[0020] Preferably, the plant planting plate is provided with a mounting hole; the planting module is connected to the plant planting plate through the mounting hole;

[0021] A plant planting plate rotating device is arranged at the free end of the supporting arm.

[0022] Preferably, the plant planting plate rotating device comprises:

[0023] A support shaft disposed on one side of the free end of the support arm and a servo motor support seat disposed on the other side of the support arm;

[0024] A servo motor is arranged on the servo motor support seat;

[0025] The servo motor output shaft and the support shaft are respectively connected to the plant planting plates on both sides.

[0026] Preferably, the shell is made of translucent material;

[0027] Full-spectrum LED lights are set on both sides of the support frame.

[0028] A control system for a plant planting device in a microgravity environment, comprising:

[0029] Rotating support device, planting module and dynamic balance adjustment device;

[0030] The rotating support device drives the planting module to rotate according to the set data; the detection sensor arranged on the rotating support device detects the balance state of the rotating support device during the rotation process, and when it is detected that the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance adjustment device is started; the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight block; a metal servo is arranged on the plant planting board, and the azimuth angle of the plant planting board is detected by the metal servo, and the control system drives the servo motor to rotate to adjust the azimuth angle of the plant planting board.

[0031] The beneficial effects of the present invention compared with the prior art are as follows:

[0032] The plant planting device in a microgravity environment of the present invention meets the growth requirements of different types of plants and improves the living conditions of plants. The present invention provides conditions for simulating the earth's gravity for plants in a space environment, which can improve the efficiency of space breeding and make space breeding more adaptable to the earth's growth environment. In view of the adverse effects of space weightlessness or microgravity environment on plant growth, the present invention creates an artificial gravity environment for plants by combining a rotating centripetal force device.

[0033] The present invention can affect plant growth and provide a valuable reference for future space crop planting. It includes a device shell, a rotating support system, a planting module and a power balance system. It has the characteristics of small size, low cost, small footprint, and is suitable for three-dimensional planting. It is widely used in space planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of a plant planting plate of a plant planting device in a microgravity environment;

[0035] Figure 2 This is the force analysis diagram of the plant planting plate of the plant planting device in a microgravity environment (I);

[0036] Figure 3 This is the force analysis diagram of the plant planting plate of the plant planting device in a microgravity environment (II);

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the plant planting device in a microgravity environment;

[0038] Figure 5 It is a side view schematic diagram of the structure of a plant planting device in a microgravity environment;

[0039] Figure 6 It is a schematic diagram of the top view of the structure of the plant planting device in a microgravity environment;

[0040] Figure 7 It is a perspective structural diagram of a plant planting device in a microgravity environment;

[0041] Figure 8It is a schematic diagram of the top view of the support frame of the plant planting device in a microgravity environment;

[0042] Fig. 9 It is a schematic diagram of the support bearing structure of the plant planting device in a microgravity environment;

[0043] Fig.10 It is a schematic diagram of the three-dimensional structure of the support frame of the plant planting device in a microgravity environment;

[0044] Fig.11 It is a schematic diagram of the connection structure between the stepper motor and the lead screw of the plant planting device in a microgravity environment;

[0045] Fig.12 It is a schematic diagram of the structure of a rotating support device for a plant planting device in a microgravity environment.

[0046] Description of the main components in the attached drawings:

[0047] In the figure:

[0048] 1. Shell 2. Rotating support device

[0049] 3. Plant planting device 4. Shell base

[0050] 5. Planting module 6. Support base

[0051] 7. Support plate 8. Support column

[0052] 9. Support bearing 10. Support frame

[0053] 11. Driving motor 12. Support arm

[0054] 13. Mobile counterweight 14. Screw nut

[0055] 15. Stepper motor 16. Mounting hole

[0056] 17. Full spectrum LED light 18. Servo motor support

[0057] 19. Plant planting board support shaft 20. Servo motor

[0058] 21. Plant planting board 22. Shell support frame

[0059] 23. Electric control box. DETAILED DESCRIPTION

[0060] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0061] Attached Figure 1-12It can be seen that a plant planting device in a microgravity environment includes: a shell 1, the shell is arranged on a shell base 4, a shell support frame 22 is arranged on the shell base 4, a rotating support device 2 is arranged in the shell; a plant planting device 3 is arranged on the rotating support device, the plant planting device includes a plant planting plate 21, a planting module 5 is arranged on the plant planting plate, and a plant to be planted is arranged on the planting module 5, and the rotating support device drives the plant to rotate in the space environment. The planting module 5 uses soil as a growth medium.

[0062] Preferably, the rotary support device comprises:

[0063] Support base 6 and support plate 7;

[0064] The support base 6 is provided with a support column 8; the top end of the support column 8 is connected to the support plate 7;

[0065] The support plate includes a support bearing 9 and a support frame 10;

[0066] The support frame 10 is connected to the inner ring of the support bearing 9;

[0067] A driving motor 11 is arranged in the middle of the supporting base, and the output shaft of the driving motor 11 is connected to the center of the supporting frame 10;

[0068] The outer ring of the support bearing is connected to the support column;

[0069] The support frame includes a support base, on which a support arm 12 is provided;

[0070] The support arms are arranged radially;

[0071] The free ends of two adjacent support arms are respectively connected to two sides of the plant planting plate;

[0072] A movable counterweight block 13 is provided on the support arm, and the movable counterweight block 13 is connected to the lead screw nut pair 14;

[0073] The screw nut pair is connected to the stepper motor 15; the movable counterweight block is adjusted at the support arm position through the screw nut pair, thereby adjusting the dynamic balance of the rotating support frame.

[0074] Preferably, the plant planting board is provided with a mounting hole; the planting module 5 is connected to the plant planting board through the mounting hole 16; the plant planting board is provided with a clamping device for fixing the planting module 5; the planting module is connected and separated from the planting board through a quick clamping device.

[0075] A plant planting plate rotating device is arranged at the free end of the supporting arm.

[0076] Preferably, the plant planting plate rotating device comprises:

[0077] A servo motor support seat 18 is arranged at the free end of the support arm, and a servo motor 20 is arranged on the servo motor support seat; the rotation angle of the plant planting plate is driven by the servo motor.

[0078] A plant planting plate support shaft 19 is provided on one side of the servo motor support seat;

[0079] The servo motor output shaft and the plant planting plate support shaft are respectively connected to the plant planting plates on both sides of the servo motor support seat.

[0080] Preferably, the shell is made of a translucent material and can be used for moisturizing and heat preservation.

[0081] Full-spectrum LED lights 17 are arranged on both sides of the support frame.

[0082] A control system for a plant planting device in a microgravity environment, comprising:

[0083] Rotating support device, planting module and dynamic balance adjustment device;

[0084] The rotating support device drives the planting module to rotate according to the set data; the detection sensor arranged on the rotating support device detects the balance state of the rotating support device during the rotation process, and when it is detected that the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance adjustment device is started; the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight block; a metal servo is arranged on the plant planting board, and the azimuth angle of the plant planting board is detected by the metal servo, and the control system drives the servo motor to rotate to adjust the azimuth angle of the plant planting board.

[0085] The working principle of the present invention is described as follows:

[0086] The centripetal acceleration is generated by rotating the planting frame, and the acceleration value that meets the plant growth is synthesized by synthesizing the centripetal acceleration and microgravity. The planting frame is rotated to a corresponding angle to allow the plant to grow along the direction of the generated acceleration.

[0087] By inferring the following formula, we try to verify the correlation between speed, radius and acceleration. By inferring the following formula, we try to verify the correlation between speed, radius and acceleration.

[0088] Centripetal acceleration formula.

[0089] Substitute the centripetal acceleration formula into the rotational speed.

[0090] a n =4(πn) 2 r ③Simplified centripetal acceleration formula.

[0091] Resultant acceleration.

[0092] The angle of the resultant acceleration.

[0093] g e =10m 2 / s

[0094]

[0095] Easy to get

[0096]

[0097] Substitute the data for verification calculation;

[0098] The speed of the reduction motor is 2640rpm, which is converted to n=44r / s;

[0099] Substitute n into the formula; ⑨

[0100] We get r=1.26*10, or 0.126 mm.

[0101] It can be seen that only r = 0.126mm is needed to achieve g at full speed e =a, there is ample room for speed reduction.

[0102] From the above calculation, it can be known that when the radius r of the device is not less than 0.126m, the device can generate effective centripetal acceleration when driven by a motor with a rotation speed of 2640rpm.

[0103] Therefore, the device radius is set to r = 0.5m, and the effective speed is n = 8rpm. This is more convenient and reasonable for both the device and plant planting.

[0104] The present invention includes four parts: a device shell for heat preservation and moisture retention, a rotating support system (support base, support plate, support column, rotating support frame, drive motor, rotating arm), a planting module (dynamic balance auxiliary breeding, plant supporting plate, spray pipe, full-spectrum LED lamp), and a power balancing system (rotating motor, movable counterweight, electric control box, plant supporting plate rotating servo motor, screw motor).

[0105] The planting board angle control of the present invention uses a small-volume metal servo with a weight of about 15g. It can accurately control the angle and has a certain torque, while the rotational inertia of the device is effectively reduced.

[0106] Another core component of the present invention is the counterweight adjustment device. Since the weight of each plant pot cannot be accurately controlled, and the plant will also change the overall center of the device during growth, four counterweight adjustment modules are used. They are controlled by a screw motor. The N20 screw motor can convert rotational motion into linear motion while meeting the small size requirement, and push and pull the counterweight block to adjust the center of gravity of the device. The center of the device is always at the center of rotation to avoid the device from jumping.

[0107] The present invention has developed an artificial plant planting system in a microgravity environment, which provides simulated earth gravity conditions for plants in the space environment, improves the efficiency of space breeding, and makes space breeding more adaptable to the earth's growth environment. The system is based on my country's aerospace industry and space station, and aims at the adverse effects of space weightlessness or microgravity environment on plant growth. It creates an artificial gravity environment for plants by combining a rotating centripetal force device.

[0108] The invention can affect plant growth and provide a valuable reference for future space crop planting. The planting system structure includes a device shell, a rotating support system, a planting module and a power balance system. It has the characteristics of small size, low cost and suitable for three-dimensional planting. It is expected to expand the production scale in the future and even be applied to space planting.

[0109] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A plant planting device in a microgravity environment, include: It includes an outer shell, in which a rotating support device is arranged; a plant planting device is arranged on the rotating support device, and the plant planting device includes a plant planting plate, on which a planting module is arranged, and on which plants to be planted are arranged, and is characterized in that: in a space environment, the rotating support device drives the plants to rotate.

2. The plant planting device in a microgravity environment according to claim 1, characterized in that: The rotating support device comprises: Support base and support plate; The support base is provided with a support column; the top end of the support column is connected to the support plate; The support plate includes a support bearing and a support frame; The support frame is connected to the inner ring of the support bearing; A driving motor is arranged in the middle of the supporting base, and an output shaft of the driving motor is connected to the center of the supporting frame; The outer ring of the support bearing is connected to the support column; The support frame includes a support base, and a support arm is arranged on the support base; The support arms are arranged radially; A movable counterweight block is arranged on the support arm, and the movable counterweight block is connected to the lead screw nut pair; The lead screw nut pair is connected to the stepper motor; the movable counterweight block is adjusted at the support arm position through the lead screw nut pair, thereby adjusting the dynamic balance of the rotating support frame.

3. The plant planting device in a microgravity environment according to claim 1, characterized in that: The plant planting plate is provided with mounting holes; the planting module is connected to the plant planting plate through the mounting holes; A plant planting plate rotating device is arranged at the free end of the supporting arm.

4. The plant planting device in a microgravity environment according to claim 1, characterized in that: The plant growing plate rotating device includes: A support shaft disposed on one side of the free end of the support arm and a servo motor support seat disposed on the other side of the support arm; A servo motor is arranged on the servo motor support seat; The servo motor output shaft and the support shaft are respectively connected to the plant planting plates on both sides.

5. The plant planting device in a microgravity environment according to claim 1, characterized in that: The shell is made of translucent material; Full-spectrum LED lights are set on both sides of the support frame.

6. A control system comprising the plant planting device in a microgravity environment according to any one of claims 1 to 5, characterized in that: include: Rotating support device, planting module and dynamic balance adjustment device; The rotating support device drives the planting module to rotate according to the set data; The detection sensor arranged on the rotating support device detects the balance state of the rotating support device during the rotation process. When it is detected that the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance adjustment device is started; the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight block; a metal servo is arranged on the plant planting board, and the azimuth angle of the plant planting board is detected by the metal servo, and the control system drives the servo motor to rotate to adjust the azimuth angle of the plant planting board.

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