Culture device for observing root system of hydroponic plant

Abstract

The invention relates to the field of plant culture devices, in particular to a culture device for observing a hydroponic plant root system. Comprising a plurality of culture containers, a camera device, a loading part and a driving mechanism, the plurality of culture containers and the camera device are arranged in the loading part; wherein the plurality of culture containers are arranged around the camera device; wherein a driving mechanism is arranged in the loading part, and the driving mechanism drives the culture container to rotate around the vertical direction, and drives the culture container to rotate around the camera device, or drives the camera device to rotate around the vertical direction. By means of the arrangement mode that the multiple culture containers surround the camera device, root systems of other plants cannot be overlapped when the camera device shoots each plant, and the accuracy of shot pictures is improved. Only the driving mechanism operates automatically, the camera device can shoot the root system of each plant, and automatic shooting of the plant root system is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plant cultivation devices, in particular to a cultivation device for observing the root system of hydroponic plants. Background Art

[0002] The root system is an important organ for plant absorption, drainage, synthesis, storage, secretion, regulation, fixation and support, and plays an important role in plant growth and development. The root system is particularly important for plants, but the naturally grown root system is deep underground. Due to the complexity of soil environmental conditions and the opacity of soil media, it is difficult to conduct in situ observation and measurement. So far, there has been an in situ root observation system, but the device can only observe the roots around the root canal, and cannot observe the entire root morphology and root structure. Therefore, hydroponic experiments have become an important means of root system observation.

[0003] Root observation is different from leaf observation. Root observation mainly observes root hairs, branch structure, and growth direction, which are mainly the three-dimensional shape of the root system, while leaf observation mainly observes the color, texture, stomata, leaf area, and disease and insect spots of the leaf, which are reflected in the plane shape. Therefore, the shooting system for root observation needs to shoot the root system of the plant from multiple angles to form a three-dimensional image.

[0004] At present, the main way to observe the root system of hydroponic plants is to culture the plants in transparent tubes and then align the camera system to shoot the plants from multiple angles. This observation method requires moving the plants many times, which is very cumbersome to operate, especially when multiple plants need to be photographed, which requires researchers to carry out mechanized activities for a long time, wasting research time. Summary of the invention

[0005] In order to solve the above-mentioned prior art problems, the present invention provides a culture device for observing the root system of hydroponic plants, comprising: a plurality of culture containers, a camera device, a loading part, and a driving mechanism; A plurality of culture containers and the camera device are both arranged in the loading part; Wherein, a plurality of said culture containers are arranged around said camera device; The loading part is provided with a driving mechanism, which drives the culture container to rotate around the vertical direction, drives the culture container to rotate around the camera device, or drives the camera device to rotate around the vertical direction.

[0006] Furthermore, the driving mechanism includes a ring gear, a sun gear, a first gear and a driving motor; Wherein, the culture container is rotatably connected to the gear ring via a connecting shaft; The first gear is arranged in the main shaft of the driving motor; The first gear is meshed with the ring gear and the sun gear simultaneously to form a planetary gear fit; Wherein, the ring gear is fixedly connected to the loading part, and the sun gear is rotationally connected to the loading part.

[0007] Further, the driving mechanism includes a second gear and a third gear; The second gear is disposed in the main shaft of the driving motor, the third gear is fixedly disposed in the connecting shaft, and the second gear is meshed with the third gear; Wherein, the first gear and the second gear are rotatably connected to the main shaft of the driving motor; Wherein, a locking ring is provided between the first gear and the second gear; Wherein, the locking ring is slidably connected to the main shaft of the driving motor, and the locking ring and the main shaft rotate synchronously; When the locking ring abuts against the first gear or the second gear, the first gear or the second gear rotates synchronously with the main shaft; It also includes a switching device, which is connected to the locking ring and drives the locking ring to slide along the length direction of the main shaft.

[0008] Furthermore, friction cone surfaces A are provided at both ends of the locking ring; The first gear and the second gear are provided with locking holes at their centers, and the ends of the locking holes are provided with chamfers to form friction cone surfaces B; The end of the locking ring is inserted into the locking hole, and the friction cone surface A and the friction cone surface B are squeezed to make the first gear / the second gear, the locking ring, and the main shaft of the driving motor rotate synchronously.

[0009] Furthermore, it also includes a connecting part, which is rotatably connected to the sun gear, wherein the switching device, the driving motor and the power supply are all fixedly arranged in the connecting part.

[0010] Furthermore, the switching device is configured as an electromagnet, and the core of the electromagnet is connected to the locking ring.

[0011] Furthermore, a lighting assembly is disposed around the periphery of the plurality of culture containers, the lighting assembly having a plurality of light sources, each light source corresponding to one of the culture containers; only the light source corresponding to the culture container being photographed is turned on to illuminate the camera device; A shield surrounding the plurality of culture containers is disposed on the periphery of the loading portion, the shield is made of a light-shielding material, and the lighting assembly is located inside the shield.

[0012] Furthermore, the mask is made of a flexible material, and has a hanging portion A on the top of the mask, a supporting portion is arranged on the periphery of the loading portion, a hanging portion B is arranged in the supporting portion, and after the hanging portion A is connected to the hanging portion B, it completely covers the culture container in the height direction.

[0013] Furthermore, a supporting floating plate is provided in the culture container to fix the plants.

[0014] Furthermore, the culture container has corresponding digital labels, and the camera device recognizes the digital labels to distinguish the plants.

[0015] The beneficial effect of the present invention is that, by arranging multiple culture containers around the camera device, the roots of other plants will not overlap when the camera device photographs each plant, thereby improving the accuracy of the photographed image. In addition, there is a definite relative position between the culture container and the camera device, and researchers do not need to carry the plants and culture containers within a certain range. The camera device only needs to drive the mechanism to operate automatically, and the camera device can complete the photography of the root system of each plant, thereby realizing the automatic photography of the plant root system and greatly simplifying the operation steps of related experiments for plant root observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a culture device for observing the root system of a hydroponic plant provided by the present invention; Figure 2 A schematic diagram of the cross-sectional structure of a culture device for observing the root system of a hydroponic plant provided by the present invention; Figure 3 for Figure 2 The enlarged schematic diagram of point a in the middle; Figure 4 A schematic diagram of the three-dimensional structure of the driving mechanism provided by the present invention; Figure 5 A schematic diagram of the three-dimensional structure of the culture device provided by the present invention from another perspective; Figure 6 for Figure 5 Enlarged schematic diagram of point b in the middle.

[0017] Figure numerals: 1. culture container; 11. supporting float; 12. connecting shaft; 2. camera device; 3. loading part; 5. driving mechanism; 51. ring gear; 52. sun gear; 53. driving motor; 54. first gear; 55. second gear; 56. third gear; 57. locking ring; 571. friction cone surface A; 58. locking hole; 581. friction cone surface B; 6. switching device; 7. connecting part; 8. lighting assembly; 81. light source; 82. slide rail; 9. cover; 91. supporting part; 92. hanging part A; 93. hanging part B. DETAILED DESCRIPTION

[0018] 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.

[0019] Example 1 Reference Figure 1-Figure 6 .

[0020] A cultivation device for observing the root system of hydroponic plants, comprising: a plurality of cultivation containers 1, a camera device 2, a loading part 3, and a driving mechanism 5; A plurality of culture containers 1 and the camera device 2 are both arranged in the loading part 3; Wherein, a plurality of the culture containers 1 are arranged around the camera device 2; The loading part 3 is provided with a driving mechanism 5, and the driving mechanism 5 drives the culture container 1 to rotate around the vertical direction, and drives the culture container 1 to rotate around the camera device 2, or drives the camera device 2 to rotate around the vertical direction.

[0021] When observing the root system of a plant, it is mainly necessary to shoot the root hairs, branch structure, growth direction and other shape features of the root system. Therefore, the camera system needs to shoot and scan at multiple angles to form a three-dimensional image, and in the relevant experiments of hydroponic plant root observation, it is often necessary to cultivate multiple plants at the same time for control experiments and reduce the contingency of the experiment. And each plant needs to be cultivated separately, one is to change the growth environment, and the other is to facilitate the placement of plants to avoid the interference of adjacent plant roots when shooting. Therefore, in the current observation experiment, each plant is cultivated in an independent glass tube, and the plant is placed in the shooting position to wait for the camera device 2 to shoot when it is necessary to observe and record. If there is only one plant in an experiment, this observation method is relatively simple, but the experiment often requires multiple plants to be carried out at the same time, and multiple shots are required. This results in a large part of the time and energy of the researchers wasted on placing plants during the experiment, and it is inevitable that mistakes will occur in the process of carrying plants many times, causing the plants to shake violently and cause the fine roots to break, affecting the absorption of water and nutrients, and affecting the accuracy of the experiment.

[0022] In order to solve the above-mentioned technical problem of complicated observation operation, this embodiment provides a cultivation device capable of efficiently performing root system observation.

[0023] First, a loading part 3 is provided, and a plurality of culture containers 1 are provided above the loading part 3, wherein a camera device 2 is provided in the middle of the loading part 3, and the plurality of culture containers 1 are arranged around the camera device 2; and a driving mechanism 5 is also provided, and the driving mechanism 5 drives a single culture container 1 to rotate so that the camera device 2 can photograph the root system of the plant at different angles. The driving mechanism 5 can also drive the camera device 2 to rotate or drive the plurality of culture containers 1 to rotate around the camera device 2 so that the camera device 2 can photograph the plants in different culture containers 1.

[0024] A supporting float 11 is provided in the culture container 1. The supporting float 11 is slightly smaller than the culture container 1. The supporting float 11 can rise or fall with the water level, and the supporting float 11 can only produce a slight shake in the horizontal direction. A flexible structure such as a sponge is provided in the supporting float 11 to clamp the plant. The supporting float 11 can prevent the plant from shaking when the container shakes, causing the plant root system to break.

[0025] Several feasible specific configurations of the driving mechanism 5 are provided below: 1. The bottom of the camera device 2 is directly connected to the drive motor 53, and the bottom of each culture container 1 is connected to the drive motor 53. This setting method can most directly achieve the purpose of driving, but the number of drive motors 53 is too large, the cost is high, and each drive motor 53 needs to be controlled separately, and the control logic is relatively complicated.

[0026] 2. The bottom of the camera device 2 is directly connected to the driving motor 53, and the culture container 1 is rotatably connected to the loading part 3 through the connecting shaft 12, and each connecting shaft 12 is provided with a transmission mechanism, which can be a gear with an open belt, a chain with a sprocket, or a belt sleeved with the connecting shaft 12, so that each culture container 1 can rotate synchronously, so that the culture container 1 can be rotated by a driving motor 53, so that the camera device 2 can shoot the root system at different angles. The camera device 2 can also be fixed, and the transmission mechanism of the culture container 1 is set in a loading platform, and then an additional driving loading platform is set to rotate, so that multiple culture containers 1 rotate around the camera device 2.

[0027] The driving motor 53 can be a servo motor or a stepper motor, which can accurately control the rotation angle. At the same time, the driving motor 53 should be started slowly to avoid causing violent shaking of the plant when it is started suddenly.

[0028] The cultivation device of this embodiment arranges multiple cultivation containers 1 around the camera device 2 so that the roots of other plants will not overlap when the camera device 2 takes pictures of each plant, thereby improving the accuracy of the shooting picture. In addition, there is a certain relative position between the cultivation container 1 and the camera device 2, and the researchers do not need to carry the plants and the cultivation container 1. The camera device 2 only needs to drive the mechanism 5 to run automatically, and the root system of each plant can be completely photographed, thereby realizing automatic photography of the plant root system and greatly simplifying the operation steps of related experiments for plant root system observation.

[0029] Furthermore, the culture container 1 has corresponding digital labels, and the camera device 2 recognizes the digital labels to distinguish plants.

[0030] If digital labels are required, care should be taken not to block the plant roots. For this purpose, the digital labels can be set at the bottom of the culture container 1 and face the camera 2. When shooting, the camera 2 sees the plant roots and the digital labels at the same time. The camera 2 records the plant roots shot in the corresponding digital labels.

[0031] Example 2 Reference Figure 1-Figure 6 .

[0032] The driving mechanism 5 includes a ring gear 51, a sun gear 52, a first gear 54 and a driving motor 53; Wherein, the culture container 1 is rotatably connected to the gear ring 51 via a connecting shaft 12; The first gear 54 is disposed in the main shaft of the driving motor 53; The first gear 54 is meshed with the ring gear 51 and the sun gear 52 at the same time to form a planetary gear fit; The ring gear 51 is fixedly connected to the loading portion 3 , and the sun gear 52 is rotatably connected to the loading portion 3 .

[0033] This embodiment again provides a driving mechanism 5, which is configured as a planetary gear structure. The camera device 2 is fixedly connected to a sun gear 52, the culture container 1 is rotatably connected to the ring gear 51 through the connecting shaft 12, and the first gear 54 is fixedly connected to the main shaft of the driving motor 53 as a planetary gear. The first gear 54 is meshed with the sun gear 52 and the ring gear 51 at the same time, the ring gear 51 is fixedly connected to the loading part 3, and the sun gear 52 is rotatably connected to the loading part 3. At this time, the driving motor 53 drives the first gear 54 to rotate, and the sun gear 52 and the camera device 2 will rotate, thereby changing the shooting object of the camera device 2.

[0034] Example 3 Reference Figure 1-Figure 6 .

[0035] The driving mechanism 5 includes a second gear 55 and a third gear 56; The second gear 55 is disposed in the main shaft of the driving motor 53, and the third gear 56 is fixedly disposed in the connecting shaft 12, and the second gear 55 is meshed with the third gear 56; Wherein, the first gear 54 and the second gear 55 are rotatably connected to the main shaft of the driving motor 53; Wherein, a locking ring 57 is provided between the first gear 54 and the second gear 55; The locking ring 57 is slidably connected to the main shaft of the driving motor 53, and the locking ring 57 rotates synchronously with the main shaft; When the locking ring 57 abuts against the first gear 54 or the second gear 55, the first gear 54 or the second gear 55 rotates synchronously with the main shaft; It also includes a switching device 6, which is connected to the locking ring 57 and drives the locking ring 57 to slide along the length direction of the main shaft.

[0036] The several driving mechanisms 5 provided in Example 1 require at least two driving motors 53, and cannot drive a single culture container 1 to rotate independently. In this application, multiple loading containers are provided, for example, eight culture containers 1 are provided. If the driving motor 53 can independently drive a culture container 1 to rotate, then the driving motor 53 only needs to provide one eighth of the power and reduce the number of rotations of the remaining non-photographed objects. Although the driving motor 53 driving the culture container 1 is not prone to violent shaking, the additional movement will more or less affect the growth of the plants, especially for some delicate plants, and in more precise experiments, unnecessary interference with the plants should be reduced as much as possible. However, if each culture container 1 is equipped with a driving motor 53, the production cost of the device will be greatly increased.

[0037] In this embodiment, the second gear 55 and the third gear 56 are additionally added to the original planetary gear drive mechanism 5. The second gear 55 is also arranged in the main shaft of the drive motor 53, so that the drive motor 53 has two layers of gears, and the first gear 54 and the second gear 55 are rotatably connected to the main shaft of the motor. It can be understood that if the gear is rotatably connected to the shaft, then when the shaft rotates, the gear will not be able to transmit the force of the shaft rotation to the next gear. Further, the third gear 56 is fixedly arranged in the connecting shaft 12 of the culture container 1, that is, the third gear 56 and the ring gear 51 form two-side gears, the first gear 54 and the ring gear 51 are meshed, and the second gear 55 and the third gear 56 are meshed, but at this time, the first gear 54 and the second gear 55 are both rotated relative to the main shaft of the drive motor 53, so even if the drive motor 53 starts, the first gear 54 and the second gear 55 cannot complete the transmission, and the sun gear 52 and the third gear 56 will not rotate. Furthermore, a locking ring 57 is also provided in this embodiment. The locking ring 57 only slides along the axial direction in the main shaft of the driving motor 53 but does not rotate. At this time, when the locking ring 57 is pressed against the first gear 54 or the second gear 55, the first gear 54 or the second gear 55 will not be able to rotate relative to the main shaft of the driving motor 53. Therefore, when the main shaft rotates, the gear pressed against by the locking ring 57 will be able to rotate with the main shaft, thereby transmitting the gear meshing therewith.

[0038] Both ends of the locking ring 57 are provided with friction cone surfaces A571; A locking hole 58 is provided at the center of the first gear 54 and the second gear 55, and an end of the locking hole 58 is provided with an oblique chamfer to form a friction cone surface B581; The end of the locking ring 57 is inserted into the locking hole 58, and the friction cone surface A571 and the friction cone surface B581 are squeezed to make the first gear 54 / the second gear 55, the locking ring 57, and the main shaft of the driving motor 53 rotate synchronously.

[0039] The friction cone surface A571 and the friction cone surface B581 can be provided with a rubber layer to increase the friction force. The cooperation between the friction cone surface A571 and the friction cone surface B581 can obtain a larger contact area, thereby obtaining a greater friction force under rated pressure, avoiding relative sliding between the locking ring 57 and the first gear 54 or the second gear 55.

[0040] The switching device 6 is configured as an electromagnet, which is a highly efficient linear drive device and costs much less than a motor. The iron core of the electromagnet is connected to the iron core. The iron core pops out the locking ring 57 to abut against the first gear 54 , and the iron core retracts the locking ring 57 to abut against the second gear 55 .

[0041] Furthermore, the switching device 6 , the driving motor 53 and the power supply are all fixedly arranged in a connecting part 7 , and the connecting part 7 is rotationally connected to the sun gear 52 to stabilize the first gear 54 and guide the first gear 54 to rotate around the axis of the sun gear 52 .

[0042] It also includes a connecting portion 7 , which is rotatably connected to the sun gear 52 , wherein the switching device 6 , the driving motor 53 and the power supply are all fixedly arranged in the connecting portion 7 .

[0043] Example 4 Reference Figure 1 and Figure 2 .

[0044] The periphery of the plurality of culture containers 1 is provided with an illumination assembly 8, the illumination assembly 8 having a plurality of light sources 81, each light source 81 corresponding to one of the culture containers 1; only the light source 81 corresponding to the culture container 1 being photographed is turned on to illuminate the camera device 2; The outer periphery of the loading portion 3 is provided with a shield 9 surrounding the plurality of culture containers 1 . The shield 9 is made of a light-shielding material, and the lighting assembly 8 is located inside the shield 9 .

[0045] Photographing plant roots is different from ordinary photography. The image needs to have a high contrast to obtain high-quality images. The lighting and background in the laboratory can easily affect the shooting picture, causing the shooting system to make wrong judgments.

[0046] In this regard, in this embodiment, a mask 9 is set around the loading part 3, that is, around the multiple culture containers 1. The material of the mask 9 needs to prevent light from passing through and prevent reflection as much as possible. Specifically, polyester, flocking cloth, and black matte acrylic board can be used. The mask 9 should be dark in color, preferably black, to achieve the best shading effect.

[0047] At the same time, multiple culture containers 1 are provided with lighting components 8, and the lighting components 8 have multiple light sources 81. Each light source 81 corresponds to a culture container 1, and the light source 81 illuminates toward the camera device 2 from the rear of the culture container 1. The so-called rear refers to the direction extending from the camera device 2 to the shooting direction of the camera device 2, and the direction away from the camera device 2 is the rear. Therefore, the positional relationship among the camera device 2, the culture container 1 and the light source 81 is the camera device 2, the culture container 1 and the light source 81 respectively.

[0048] Furthermore, multiple light sources 81 are integrated into a lighting assembly 8. The loading portion 3 can extend multiple slide rails 82 upward. The lighting assembly 8 slides along the slide rails 82. When shooting is required, the lighting assembly 8 is slid to a height that can illuminate the plant roots. When shooting is not required, the lighting assembly 8 is lowered. The lighting assembly 8 avoids the plant roots, making it convenient for researchers to observe with the naked eye.

[0049] The lighting assembly 8 allows light to penetrate the root system and enter the camera device 2, thereby enhancing the image contrast. At the same time, the mask 9 can absorb stray light, improve the background purity, and improve the image contrast and signal-to-noise ratio.

[0050] Furthermore, the mask 9 is made of flexible material and has a hanging portion A92 on the top. The loading portion 3 is provided with a supporting portion 91 on the periphery thereof, and a hanging portion B93 is provided in the supporting portion 91. After the hanging portion A92 is connected to the hanging portion B93, it completely covers the culture container 1 in the height direction.

[0051] For example, the mask 9 is made of flocked cloth, and the mask 9 can also be provided with a plurality of circular keels. When no shooting is performed, the mask 9 is piled up at the bottom. When shooting is required, the mask 9 is pulled up so that the mask 9 wraps the culture container 1. A hanging portion A92 is provided on the top of the mask 9, a supporting portion 91 is provided on the periphery of the loading portion 3, and a hanging portion B93 is provided above the supporting portion 91. The hanging portion A92 and the hanging portion B93 can be provided with hook-shaped structures. The hanging portion A92 and the hanging portion B93 can be hooked up to prevent the flexible mask 9 from falling. This design of the mask 9 can achieve extremely convenient use effects with extremely low finished products.

[0052] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0053] In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0054] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0056] In the description of the embodiments of the present invention, it should be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0057] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0058] 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 cultivation device for observing the root system of hydroponic plants, characterized in that: include: A plurality of culture containers, a camera device, a loading unit, and a driving mechanism; A plurality of culture containers and the camera device are both arranged in the loading part; Wherein, a plurality of said culture containers are arranged around said camera device; The loading part is provided with a driving mechanism, which drives the culture container to rotate around the vertical direction, drives the culture container to rotate around the camera device, or drives the camera device to rotate around the vertical direction.

2. A cultivation device for observing the root system of hydroponic plants according to claim 1, characterized in that: The driving mechanism includes a ring gear, a sun gear, a first gear and a driving motor; Wherein, the culture container is rotatably connected to the gear ring via a connecting shaft; The first gear is arranged in the main shaft of the driving motor; The first gear is meshed with the ring gear and the sun gear simultaneously to form a planetary gear fit; Wherein, the ring gear is fixedly connected to the loading part, and the sun gear is rotationally connected to the loading part.

3. A cultivation device for observing the root system of hydroponic plants according to claim 2, characterized in that: The driving mechanism comprises a second gear and a third gear; The second gear is disposed in the main shaft of the driving motor, the third gear is fixedly disposed in the connecting shaft, and the second gear is meshed with the third gear; Wherein, the first gear and the second gear are rotatably connected to the main shaft of the driving motor; Wherein, a locking ring is provided between the first gear and the second gear; Wherein, the locking ring is slidably connected to the main shaft of the driving motor, and the locking ring and the main shaft rotate synchronously; When the locking ring abuts against the first gear or the second gear, the first gear or the second gear rotates synchronously with the main shaft; It also includes a switching device, which is connected to the locking ring and drives the locking ring to slide along the length direction of the main shaft.

4. A cultivation device for observing the root system of hydroponic plants according to claim 3, characterized in that: Both ends of the locking ring are provided with friction cone surfaces A; The first gear and the second gear are provided with locking holes at their centers, and the ends of the locking holes are provided with chamfers to form friction cone surfaces B; The end of the locking ring is inserted into the locking hole, and the friction cone surface A and the friction cone surface B are squeezed to make the first gear / the second gear, the locking ring, and the main shaft of the driving motor rotate synchronously.

5. The cultivation device for observing the root system of hydroponic plants according to claim 4, characterized in that: It also includes a connecting part, which is rotatably connected to the sun gear, wherein the switching device, the driving motor and the power supply are all fixedly arranged in the connecting part.

6. The cultivation device for observing the root system of hydroponic plants according to claim 5, characterized in that: The switching device is configured as an electromagnet, and the iron core of the electromagnet is connected to the locking ring.

7. A cultivation device for observing the root system of hydroponic plants according to claim 6, characterized in that: The periphery of the plurality of culture containers is provided with a lighting assembly, the lighting assembly having a plurality of light sources, each light source corresponding to one of the culture containers; only the light source corresponding to the culture container being photographed is turned on to illuminate the camera device; A shield surrounding the plurality of culture containers is disposed on the periphery of the loading portion, the shield is made of a light-shielding material, and the lighting assembly is located inside the shield.

8. The cultivation device for observing the root system of hydroponic plants according to claim 7, characterized in that: The shield is made of flexible material, and has a hanging portion A on the top of the shield. A supporting portion is arranged on the periphery of the loading portion, and a hanging portion B is arranged in the supporting portion. After the hanging portion A is connected to the hanging portion B, the culture container is completely covered in the height direction.

9. The cultivation device for observing the root system of hydroponic plants according to claim 8, characterized in that: The culture container is provided with a supporting floating plate for fixing the plants.

10. A cultivation device for observing the root system of a hydroponic plant according to any one of claims 1 to 9, characterized in that: The culture container has corresponding digital labels, and the camera device recognizes the digital labels to distinguish the plants.

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