Plant growing device and control system in microgravity environment

Abstract

The present application relates to a kind of microgravity environment plant growing device and control system, comprising: including shell, rotating support device is arranged in shell;Rotating support device is provided with plant growing device on, plant growing device includes plant growing plate, plant growing plate is provided with planting module, planting module is provided with the plant of planting, rotating support device drives plant to rotate in space environment.The present application microgravity environment plant growing device, meet the growth needs of different kinds of plants, improve plant survival conditions.The present application provides the condition of simulating earth gravity for plant in space environment, can improve the efficiency of space breeding, let space breeding be more suitable for earth growth environment.The present application is directed to the adverse effects of space weightlessness or microgravity environment on plant growth, create artificial gravity environment for plants by rotating centripetal force combination device, with Small volume, low in cost, small footprint, suitable for three-dimensional planting characteristics, widely used in space planting.

Description

TECHNICAL FIELD

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

[0002] Plant gravitropism refers to the plant's response to the Earth's gravity by adjusting the growth direction to adapt to the gravitational environment. This feature is crucial for plant growth and development, as it determines the growth direction of plant organs such as roots and stems, and thus affects processes such as plant fixation, water and nutrient absorption, and photosynthesis.

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

[0004] The ecological tank carried by Chang'e 4 lunar explorer can reflect the growth of cotton seedlings in low gravity environment on the moon. It can generally reflect the growth characteristics of plants in microgravity environment, as well as the multi-physical field characteristics of lunar water ice thermal mining and the optimal heating temperature research. Since gravity has a significant impact on plant growth, in the space microgravity environment, the space microgravity is not adjustable, and the plant growth has certain limitations. To obtain better survival conditions, a plant growth device that can adjust the microgravity is needed. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a plant planting system in microgravity environment that meets the growth needs of different types of plants and improves the survival conditions of plants.

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

[0007] A plant planting device in microgravity environment,

[0008] comprising a housing, a rotating support device is arranged in the housing; a plant planting device is arranged on the rotating support device, the plant planting device comprises a plant planting plate, a planting module is arranged on the plant planting plate, and plants are planted on the planting module; the rotating support device drives the plants to rotate in space environment.

[0009] Preferably, the rotating support device comprises:

[0010] a support base and a support disc;

[0011] the support base is provided with a support column, and the top end of the support column is connected with the support disc;

[0012] the support disc comprises a support bearing and a support frame;

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

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

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

[0016] The support frame comprises a support seat, and the support seat is provided with support arms;

[0017] The support arms are arranged radially;

[0018] A moving weight block is arranged on each support arm, and the moving weight block is connected with a screw nut;

[0019] The screw nut is connected with a stepping motor, and the moving weight block is adjusted in position on the support arm through the screw nut, so as to adjust the dynamic balance of the rotating support frame.

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

[0021] The free end of the support arm is provided with a plant planting plate rotating device.

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

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

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

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

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

[0027] Full-spectrum LED lamps are arranged on the two sides of the support frame.

[0028] A control system of a plant planting device in a microgravity environment comprises:

[0029] a rotating support device, a planting module and a dynamic balance adjusting 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 in the rotating process, and when it is detected that the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance adjusting device is started; the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight; the metal rudder is arranged on the plant planting plate, the azimuth angle of the plant planting plate is detected through the metal rudder, and the azimuth angle of the plant planting plate is adjusted by driving the servo motor of the control system.

[0031] The beneficial effects of the present application relative to the prior art are:

[0032] The plant planting device in the microgravity environment meets the growth requirements of different types of plants and improves the survival conditions of plants. The present application provides a simulated earth gravity condition for plants in space environment, which can improve the efficiency of space breeding and make space breeding more suitable for the growth environment on earth. The present application aims at the adverse effects of space weightlessness or microgravity environment on plant growth, and creates an artificial gravity environment for plants through a rotating centripetal force combination device.

[0033] The present application can affect plant growth and provide valuable reference for future space planting crops, including device shell, rotating support system, planting module and dynamic balance system, which has the characteristics of small volume, low cost, small land occupation and is suitable for three-dimensional planting, and is widely applied to space planting. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

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

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

[0040] Figure 7 is a perspective structure schematic diagram of the plant planting device in the microgravity environment;

[0041] Figure 8This is a top view schematic diagram of the support frame structure of a plant cultivation device under microgravity conditions;

[0042] Figure 9 This is a schematic diagram of the support bearing structure of a plant cultivation device under microgravity conditions.

[0043] Figure 10 This is a schematic diagram of the three-dimensional structure of the support frame for a plant cultivation device under microgravity conditions;

[0044] Figure 11 This is a schematic diagram of the stepper motor and lead screw connection structure of a plant planting device under microgravity conditions.

[0045] Figure 12 This is a schematic diagram of the rotating support device structure of a plant planting device under microgravity conditions.

[0046] Explanation of symbols for key components in the attached diagram:

[0047] In the picture:

[0048] 1. Outer shell 2. Rotary support device

[0049] 3. Planting device 4. Outer casing and base

[0050] 5. Planting module 6. Support base

[0051] 7. Support plate 8. Support column

[0052] 9. Support bearing 10. Support frame

[0053] 11. Drive motor 12. Support arm

[0054] 13. Moving counterweight 14. Lead screw and nut assembly

[0055] 15. Stepper motor 16. Mounting hole

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

[0057] 19. Planting board support shaft; 20. Servo motor

[0058] 21. Planting board 22. Shell support frame

[0059] 23. Electrical control box. Detailed Implementation

[0060] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0061] Appendix Figures 1-12It is known that a plant cultivation device under microgravity includes: a shell 1, which is mounted on a base 4, and a support frame 22 is mounted on the base 4. A rotating support device 2 is located inside the shell. A plant cultivation device 3 is mounted on the rotating support device. The plant cultivation device includes a plant planting board 21, on which a planting module 5 is mounted. Plants are placed on the planting module 5. In a space environment, the rotating support device drives the plants to rotate. The planting module 5 uses soil as a growth substrate.

[0062] Preferably, the rotating support device includes:

[0063] Support base 6 and support plate 7;

[0064] The support base 6 is provided with a support column 8; the top 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 drive motor 11 is provided in the middle of the support base, and the output shaft of the drive motor 11 is connected to the center of the support 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 the two sides of the plant planting board;

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

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

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

[0075] The free end of the support arm is equipped with a plant planting board rotation device.

[0076] Preferably, the plant planting board rotating device includes:

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

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

[0079] The servo motor output shaft and the plant planting board support shaft are respectively connected to the plant planting boards on both sides of the servo motor support base.

[0080] Preferably, the outer shell is made of a semi-transparent material, which can be used for moisture retention and heat preservation.

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

[0082] A control system for a plant cultivation device under microgravity conditions includes:

[0083] Rotary 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 set on the rotating support device detects the balance status of the rotating support device during the rotation process. When the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance adjustment device is activated; the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight; a metal servo motor is set on the plant planting plate. The orientation angle of the plant planting plate is detected by the metal servo motor, and the control system drives the servo motor to rotate and adjust the orientation angle of the plant planting plate.

[0085] Explanation of the working principle of this invention:

[0086] Centripetal acceleration is generated by rotating the planting frame, and by combining centripetal acceleration with microgravity, an acceleration value that conforms to plant growth is synthesized. The planting frame is then rotated to the corresponding angle so that the plant grows in the direction of the generated acceleration.

[0087] Try to verify the correlation between rotational speed, radius, and acceleration by inferring from the following formula.

[0088] The formula for centripetal acceleration.

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

[0090] a n =4(πn) 2 ③ The simplified formula for centripetal acceleration.

[0091] Composite acceleration.

[0092] The angle of the composite acceleration.

[0093] g e =10m 2 / s

[0094]

[0095] Easy to obtain

[0096]

[0097] Substitute the data for verification calculation;

[0098] A geared motor with a speed of 2640 rpm is converted to n = 44 r / s;

[0099] Substitute n into the formula; ⑨

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

[0101] Therefore, it can be concluded that only r = 0.126 mm is needed to achieve g at full speed. e =a, there is ample room for deceleration.

[0102] As can be seen from the above calculations, when the device radius r is not less than 0.126m, the device can generate effective centripetal acceleration under the drive of a motor with a speed of 2640rpm.

[0103] Therefore, the device radius is set to r = 0.5m, and the effective rotation speed is n = 8rpm. This makes both the device and the plant cultivation more convenient and efficient.

[0104] The present invention comprises four parts: a housing 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 assisted seeding, plant support plate, spray pipe, full-spectrum LED light), and a dynamic balance system (rotating motor, movable counterweight, electrical control box, rotating servo motor of plant support plate, lead screw motor).

[0105] The planting plate angle control of this invention uses a small-volume metal servo motor, weighing about 15g, which can accurately control the angle and effectively reduce the rotational inertia of the device while providing a certain torque.

[0106] Another core component of this invention is the counterweight adjustment device. Since the weight of each plant pot cannot be precisely controlled, and the plant's growth causes the device's overall center of gravity to shift, four counterweight adjustment modules are used. These are controlled by lead screw motors. The N20 lead screw motor, while maintaining a small size, converts rotational motion into linear motion, pushing and pulling the counterweights to adjust the device's center of gravity. This ensures the device's center remains at the center of rotation, preventing the device from jumping.

[0107] This invention develops an artificial plant cultivation system for use in a microgravity environment, providing plants in space with conditions that simulate Earth's gravity, improving the efficiency of space breeding, and making space-bred plants more adaptable to Earth's growth environment. Based on my country's aerospace industry and space station, this system addresses the adverse effects of weightlessness or microgravity on plant growth by creating an artificial gravity environment for plants through a rotating centripetal force combination device.

[0108] This invention can influence plant growth, providing a valuable reference for future space-grown crops. The planting system comprises a shell, a rotating support system, planting modules, and a dynamic balancing system. It is characterized by its small size, low cost, and suitability for vertical planting, and holds promise for future large-scale production and even application in space cultivation.

[0109] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the structure of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. A plant cultivation device under microgravity conditions. include: The device includes an outer shell, inside which a rotating support device is installed; a plant planting device is installed on the rotating support device, the plant planting device includes a plant planting board, a planting module is installed on the plant planting board, and a plant is installed on the planting module; the device is characterized in that: the rotating support device drives the plant to rotate in a space environment. The rotary support device includes: Support base and support plate; The support base is equipped with support columns; the top of the support columns 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 drive motor is located in the middle of the support base, and the output shaft of the drive motor is connected to the center of the support frame; The outer ring of the support bearing is connected to the support column; The support frame includes a support base, on which a support arm is mounted; The support arms are arranged radially; A movable counterweight is installed on the support arm, and the movable counterweight is connected to the lead screw nut pair; The lead screw and nut assembly is connected to the stepper motor; the movable counterweight is adjusted to the position of the support arm through the lead screw and nut assembly, thereby adjusting the dynamic balance of the rotary support device; The plant planting board is provided with mounting holes; the planting module is connected to the plant planting board through the mounting holes; The free end of the support arm is equipped with a plant planting board rotation device.

2. The plant cultivation device under microgravity environment according to claim 1, characterized in that: The plant planting board rotating device includes: A support shaft is set on one side of the free end of the support arm and a servo motor support base is set on the other side of the support arm; A servo motor is mounted on the servo motor support. The servo motor output shaft and support shaft are connected to the plant planting boards on both sides, respectively.

3. The plant cultivation device under microgravity environment according to claim 1, characterized in that: The outer shell is made of a semi-transparent material; Full-spectrum LED lights are installed on both sides of the support frame.

4. A control system comprising the plant cultivation device under microgravity environment as described in any one of claims 1 to 3, characterized in that, include: Rotary support device and plant planting device; The rotating support device drives the planting module to rotate according to the set data; The detection sensor installed on the rotating support device detects the balance status of the rotating support device during rotation. When the dynamic balance data of the rotating support device exceeds the set value, the dynamic balance value of the rotating support device is adjusted by changing the position of the counterweight. A metal servo motor is installed on the plant planting board. The metal servo motor detects the orientation angle of the plant planting board, and the control system drives the servo motor to rotate and adjust the orientation angle of the plant planting board.

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