Planting device with hydroponic plant root growth monitoring function and use method thereof

Abstract

The invention relates to the technical field of crop planting equipment, in particular to a planting device with a hydroponic plant root growth monitoring function and a using method thereof.The planting device comprises a box body, a hydroponic unit is arranged in the middle of the box body, root growth monitoring units are arranged on the front side and the rear side of the hydroponic unit, and the hydroponic unit comprises a hydroponic tank; a planting plate is arranged at the top of the hydroponic tank, the two sides of the planting plate are slidably connected with the side walls of the hydroponic tank, a hydroponic cavity is formed in the lower side of the planting plate, visual windows are arranged on the front side and the rear side of the hydroponic cavity, telescopic cavities are symmetrically formed in the two sides of the hydroponic cavity, and the telescopic cavities are connected with the hydroponic cavity through flexible telescopic walls; an electric telescopic rod connected with the planting plate is arranged in the telescopic cavity. According to the planting device with the hydroponic plant root growth monitoring function and the use method of the planting device with the hydroponic plant root growth monitoring function, accurate regulation and control of the hydroponic plant growth environment and real-time monitoring of the root growth condition are achieved, and the planting efficiency and quality of hydroponic plants are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crop planting equipment, and particularly relates to a planting device with a function of monitoring the growth of hydroponic plant roots and a using method thereof. Background Art

[0002] With the continuous development of modern agricultural technology, hydroponic planting, as an efficient and environmentally friendly plant planting method, has been widely applied. During the process of hydroponic plant planting, the growth condition of plant roots plays a crucial role in the overall growth and development of plants. By monitoring the root growth, information such as the plant's nutrient absorption situation and health status can be timely understood, so as to take corresponding measures for optimized management.

[0003] However, the existing hydroponic planting devices currently have many deficiencies in root growth monitoring. On the one hand, most devices lack a special root growth monitoring structure and it is difficult to achieve real-time and accurate observation of the root growth situation; on the other hand, the existing monitoring methods often require manual operation, which is not only inefficient, but also difficult to ensure the accuracy and comprehensiveness of monitoring. At the same time, the existing hydroponic devices also have problems of low automation in aspects such as nutrient solution management and light control, and cannot provide the most suitable growth environment for plants. Summary of the Invention

[0004] The purpose of the present invention is to provide a planting device with a function of monitoring the growth of hydroponic plant roots and a using method thereof, to achieve precise regulation of the growth environment of hydroponic plants and real-time monitoring of the root growth situation, and to improve the planting efficiency and quality of hydroponic plants.

[0005] To achieve the above object, the present invention provides a planting device with a function of monitoring the growth of hydroponic plant roots, including a box body. A hydroponic unit is provided in the middle of the box body. Root growth monitoring units are provided on the front and back sides of the hydroponic unit. The hydroponic unit includes a hydroponic tank. A planting plate is provided at the top of the hydroponic tank. The two sides of the planting plate are slidably connected to the side walls of the hydroponic tank. A hydroponic cavity is provided on the lower side of the planting plate. Visual windows are provided on both the front and back sides of the hydroponic cavity. Telescopic cavities are symmetrically provided on both sides of the hydroponic cavity. The telescopic cavities are connected to the hydroponic cavity through flexible telescopic walls. Electric telescopic rods connected to the planting plate are provided in the telescopic cavities.

[0006] Preferably, a lighting unit is provided on the upper side of the hydroponic unit, a liquid storage unit is provided on the lower side of the hydroponic unit. The liquid storage unit is communicated with the hydroponic unit. A control unit is provided on one side of the liquid storage unit. The lighting unit, the hydroponic unit, the liquid storage unit and the root growth monitoring unit are all electrically connected to the control unit.

[0007] Preferably, the lighting unit includes a light sensor and LED supplementary lights. There are multiple LED supplementary lights, which are arranged in parallel on the inner side of the top of the box body. The light sensor is arranged at the rear side of the multiple LED supplementary lights and is fixedly connected to the box body. Both the light sensor and the LED supplementary lights are electrically connected to the control unit.

[0008] Preferably, the liquid storage unit includes a nutrient solution storage tank. An acid solution replenishment bottle, an alkali solution replenishment bottle, a nutrient solution concentration bottle, and a water tank are arranged on the outer side of the nutrient solution storage tank. The acid solution replenishment bottle, the alkali solution replenishment bottle, and the nutrient solution concentration bottle are respectively provided with a first liquid replenishment pipe communicating with the nutrient solution storage tank. A first liquid replenishment pump is arranged on the first liquid replenishment pipe. A second liquid replenishment pump is arranged in the water tank. The second liquid replenishment pump is communicated with the nutrient solution storage tank through a second liquid replenishment pipe. Both the first liquid replenishment pump and the second liquid replenishment pump are electrically connected to the control unit.

[0009] Preferably, a flow cavity is arranged at the bottom of the hydroponic cavity. The front side of the flow cavity is communicated with a liquid return tank through a liquid outlet. The liquid return tank is an open structure. The bottom of the liquid return tank is communicated with the nutrient solution storage tank through a liquid return pipe. A nutrient solution delivery pump is arranged in the middle of the nutrient solution storage tank. The nutrient solution delivery pump is communicated with a main liquid delivery pipe. A plurality of liquid delivery branch pipes are connected to the main liquid delivery pipe. The plurality of liquid delivery branch pipes are respectively communicated with the liquid inlet on the rear side of the flow cavity. The nutrient solution delivery pump is electrically connected to the control unit.

[0010] Preferably, a sensor bin is arranged on one side of the nutrient solution storage tank. An EC value sensor, a pH sensor, and a liquid temperature sensor are arranged in the sensor bin. The EC value sensor, the pH sensor, and the liquid temperature sensor are all electrically connected to the control unit.

[0011] Preferably, the root growth monitoring unit includes two transmission mechanisms arranged parallel to each other front and back. A fixed seat is fixedly connected to the transmission mechanism. The bottom of the fixed seat is connected to an image acquisition device through a connecting rod. The image acquisition device is electrically connected to the control unit.

[0012] Preferably, each transmission mechanism includes a support cross beam. The support cross beam is fixedly connected to the inner wall of the box body. A first pulley and a second pulley are respectively arranged at both ends of the support cross beam. The first pulley is connected to the second pulley through a transmission belt. A transmission shaft is connected between the two first pulleys. The transmission belt is fixedly connected to the fixed seat. The transmission shaft is connected to a transmission motor. The transmission motor is electrically connected to the control unit.

[0013] The present invention also provides a usage method of a planting device with the above structure and having a function of monitoring the growth of hydroponic plant roots, including the following steps:

[0014] S1. Plant the plant seedlings to be hydroponically cultivated in the planting holes on the planting plate. According to the type and growth stage of the plants, set the initial concentration, pH value, and temperature parameters of the nutrient solution through the control unit, and start the nutrient solution delivery pump to make the nutrient solution circulate between the hydroponic cavity and the nutrient solution storage tank;

[0015] S2. Use a light sensor to monitor the ambient light intensity in real time and transmit the data to the control unit. The control unit turns on and off the LED supplementary light according to the ambient light intensity.

[0016] S3. Use an EC value sensor, a pH sensor, and a liquid temperature sensor to monitor the conductivity, acidity, and temperature of the nutrient solution in real time and transmit the data to the control unit. When the EC value, pH value, or temperature of the nutrient solution deviates from the set range, the control unit controls the operation of the first liquid supplement pump and the second liquid supplement pump according to the deviation situation, supplements the corresponding acid solution, alkali solution, nutrient solution concentrate, or water, adjusts the nutrient solution, and keeps the nutrient solution delivery pump running continuously.

[0017] S4. The control unit controls the operation of the transmission mechanism regularly or as needed, drives the image acquisition device to linearly move back and forth in front of and behind the hydroponic cavity. The image acquisition device acquires images of the root growth conditions on both sides in front of and behind the hydroponic cavity and transmits the acquired image data to the control unit. The control unit analyzes and processes the image data. The staff can view the root growth images and analyze the data through the control unit and adjust the planting parameters.

[0018] S5. When it is necessary to adjust the position of the roots in the hydroponic cavity, the control unit controls the operation of the electric telescopic rod. The electric telescopic rod drives the planting plate to move up and down in the hydroponic tank to make the roots in a suitable position.

[0019] Preferably, in S1, the control unit controls the operation of the first liquid supplement pump and the second liquid supplement pump, and supplements the liquids in the acid solution supplement bottle, alkali solution supplement bottle, nutrient solution concentrate bottle, and the water in the water tank to the nutrient solution storage tank according to a set ratio to prepare the nutrient solution.

[0020] Advantages of the present invention:

[0021] The present invention adopts the above-mentioned planting device with the function of monitoring the growth of hydroponic plant roots and its use method, and has the following advantages:

[0022] (1) The present invention sets up a root growth monitoring unit. By using the image acquisition device and the transmission mechanism, it can realize the automatic and dynamic monitoring of the root growth of hydroponic plants without manual operation, improving the efficiency and accuracy of monitoring. Through the analysis of the root growth images, information such as the growth state and health status of the roots can be timely understood, providing a basis for the precise management of plants.

[0023] (2) In the lighting unit of the present invention, the light sensor and the LED supplementary light cooperate with the control unit, and can automatically adjust the working state of the LED supplementary light according to the ambient light intensity, providing the most suitable lighting conditions for hydroponic plants, promoting the photosynthesis of plants, and improving the growth quality of plants.

[0024] (3) The coordinated operation of various sensors, the control unit, and the liquid replenishing pump in the liquid storage unit of the present invention can achieve real-time monitoring and automatic adjustment of the conductivity, pH value, temperature, and concentration of the nutrient solution, providing a stable and suitable nutrient environment for plants, meeting the needs of different growth stages of plants, and reducing the error and labor intensity of manual adjustment.

[0025] (4) In the hydroponic unit of the present invention, the planting plate can move up and down through the electric telescopic rod, and can flexibly adjust the position of the root system in the hydroponic cavity according to the growth condition of the plant roots, ensuring full contact between the root system and the nutrient solution, and at the same time facilitating the observation and management of the root system.

[0026] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a planting device with a function of monitoring the growth of hydroponic plant roots according to the present invention;

[0028] Figure 2 is a schematic diagram of the planting device without the hydroponic unit according to the present invention;

[0029] Figure 3 is a cross-sectional schematic diagram of the hydroponic unit according to the present invention;

[0030] Figure 4 is a schematic diagram of the internal structure of the planting device according to the present invention;

[0031] Figure 5 is the present invention Figure 4 partial enlarged view of part A;

[0032] Figure 6 is a partial schematic diagram of the liquid storage unit according to the present invention.

[0033] Reference numerals:

[0034] 1, box body;

[0035] 2, hydroponic unit; 21, hydroponic tank; 22, planting plate; 23, hydroponic cavity; 24, telescopic cavity; 25, flexible telescopic wall; 26, electric telescopic rod; 27, flow cavity; 28, liquid outlet; 29, return liquid groove;

[0036] 3, root growth monitoring unit; 31, transmission mechanism; 311, support cross beam; 312, pulley one; 313, pulley two; 314, transmission shaft; 315, transmission motor; 316, transmission belt; 32, fixed seat; 33, connecting rod; 34, image acquisition device;

[0037] 4, lighting unit; 41, LED supplementary light;

[0038] 5. Liquid storage unit; 51. Nutrient solution storage tank; 52. Acid solution replenishment bottle; 53. Alkali solution replenishment bottle; 54. Nutrient solution concentrate bottle; 55. Water tank; 56. First liquid replenishment pump; 57. Second liquid replenishment pump; 58. Second liquid replenishment pipe; 59. Sensor chamber; 510. Nutrient solution delivery pump; 511. Return pipe; 512. Main liquid delivery pipe; 513. Liquid delivery branch pipe;

[0039] 6. Control unit. Specific implementation manners

[0040] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The features mentioned above in the present invention or the features mentioned in the specific examples can be combined arbitrarily. These specific embodiments are only used to illustrate the present invention and do not limit the scope of the present invention.

[0041] Embodiment

[0042] As Figures 1 to 2 shown, the present invention provides a planting device with a function of monitoring the growth of hydroponic plant roots, including a box body 1. A hydroponic unit 2 is provided in the middle of the box body 1. Root growth monitoring units 3 are provided on the front and rear sides of the hydroponic unit 2 for observing the growth state of hydroponic plant roots. The hydroponic unit 2 includes a hydroponic tank 21. A planting plate 22 is provided on the top of the hydroponic tank 21. The side of the planting plate 22 is slidably connected to the side wall of the hydroponic tank 21 up and down (which can be realized by vertically arranging a slide rail of the prior art). A hydroponic cavity 23 is provided on the lower side of the planting plate 22. Visual windows are provided on the front and rear sides of the hydroponic cavity 23, which is convenient for observing the growth of roots in the hydroponic cavity 23.

[0043] As Figure 3 shown, telescopic cavities 24 are symmetrically provided on both sides of the hydroponic cavity 23. The telescopic cavities 24 are connected to the hydroponic cavity 23 through flexible telescopic walls 25. The flexible telescopic walls 25 form a waterproof barrier layer to prevent nutrient solution from seeping into the telescopic cavities 24, and the flexible telescopic walls 25 can be elastically stretched along the axial direction to provide a continuous expansion space for the roots. Electric telescopic rods 26 connected to the planting plate 22 are provided in the telescopic cavities 24. The electric telescopic rods 26 can drive the planting plate 22 to move up and down in the hydroponic tank 21 to adjust the position of the plant roots in the hydroponic cavity 23 to meet the requirements of different growth stages.

[0044] As Figures 4 to 5As shown in the figure, the root growth monitoring unit 3 includes two transmission mechanisms 31 arranged in parallel before and after. A fixed seat 32 is fixedly connected to the transmission mechanism 31. The bottom of the fixed seat 32 is connected to the image acquisition device 34 through a connecting rod 33. The image acquisition device 34 is electrically connected to the control unit 6. A data processing system in the prior art is installed on the control unit 6. Each transmission mechanism 31 includes a support crossbeam 311, which is fixedly connected to the inner wall of the box body 1. A pulley one 312 and a pulley two 313 are respectively arranged at both ends of the support crossbeam 311. The pulley one 312 is connected to the pulley two 313 through a transmission belt 316. The transmission belt 316 is fixedly connected to the fixed seat 32. The two pulleys one 312 are connected through a transmission shaft 314. The transmission shaft 314 is connected to a transmission motor 315. The transmission motor 315 is electrically connected to the control unit 6.

[0045] The transmission motor 315 drives the pulley one 312 to rotate through the transmission shaft 314. The pulley one 312 further drives the pulley two 313 to rotate through the transmission belt 316, so that the entire transmission mechanism 31 forms a continuous and stable circular motion. During the operation of the transmission mechanism 31, the image acquisition device 34 linked to the transmission mechanism 31 will linearly move along the front-back direction of the hydroponic cavity 23. By controlling the forward rotation, reverse rotation, rotation speed and operation time of the transmission motor 315, the movement path, speed and range of the image acquisition device 34 can be accurately controlled. During the movement of the image acquisition device 34, the image acquisition device 34 acquires images of the root growth situation in the hydroponic cavity 23 through the viewing window and transmits the acquired image data to the control unit 6. The control unit 6 can analyze and process the image data, such as identifying the growth form of the roots, measuring the length and quantity of the roots, etc., so as to realize the comprehensive monitoring of the root growth situation of hydroponic plants.

[0046] A lighting unit 4 is arranged on the upper side of the hydroponic unit 2, and a liquid storage unit 5 is arranged on the lower side of the hydroponic unit 2. The liquid storage unit 5 is communicated with the hydroponic unit 2. The control unit 6 is arranged on one side of the liquid storage unit 5. The lighting unit 4, the hydroponic unit 2, the liquid storage unit 5 and the root growth monitoring unit 3 are all electrically connected to the control unit 6. The control unit 6 is electrically connected to a computer in the prior art. A control system in the prior art is installed on the control unit 6. The intelligent control of each unit is realized through the control unit 6.

[0047] The lighting unit 4 includes a light sensor and LED supplementary lights 41. There are multiple LED supplementary lights 41, which are arranged in parallel on the inner side of the top of the box body 1 to provide sufficient light for the hydroponic plants. The light sensor is arranged at the rear side of the multiple LED supplementary lights 41 and is fixedly connected to the box body 1, and is used to monitor the ambient light intensity in real time. Both the light sensor and the LED supplementary lights 41 are electrically connected to the control unit 6, and the control unit 6 can automatically adjust the brightness and switch state of the LED supplementary lights 41 according to the data monitored by the light sensor.

[0048] As Figure 6 shown, the liquid storage unit 5 includes a nutrient solution storage tank 51. An acid solution replenishment bottle 52, an alkali solution replenishment bottle 53, a nutrient solution concentrate bottle 54, and a water tank 55 are arranged on the outer side of the nutrient solution storage tank 51. The acid solution replenishment bottle 52, the alkali solution replenishment bottle 53, and the nutrient solution concentrate bottle 54 are respectively provided with a first liquid replenishment pipe communicating with the nutrient solution storage tank 51, and a first liquid replenishment pump 56 is arranged on the first liquid replenishment pipe. A second liquid replenishment pump 57 is arranged in the water tank 55, and the second liquid replenishment pump 57 is communicated with the nutrient solution storage tank 51 through a second liquid replenishment pipe 58. Both the first liquid replenishment pump 56 and the second liquid replenishment pump 57 are electrically connected to the control unit 6. The control unit 6 can adjust the pH value and concentration of the nutrient solution by controlling the operation of the first liquid replenishment pump 56 and the second liquid replenishment pump 57 according to the growth requirements of the plants.

[0049] A flow cavity 27 is arranged at the bottom of the hydroponic cavity 23, and the nutrient solution flows directionally in the flow cavity 27 to realize the cyclic supply and update of the nutrient solution, ensuring that the plant roots can continuously obtain sufficient nutrients and dissolved oxygen. The front side of the flow cavity 27 is communicated with a liquid return tank 29 through a liquid outlet 28. There are multiple liquid outlets 28. The bottom of the liquid return tank 29 is communicated with the nutrient solution storage tank 51 through a liquid return pipe 511. After the nutrient solution completes the nutrient supply to the plant roots in the flow cavity 27, it can flow back to the liquid return tank 29 in an orderly manner, cooperating with the nutrient solution storage tank 51 to form a complete nutrient solution circulation system. This ensures the continuous update of the nutrient solution, maintains the stability of the nutrient concentration, avoids the depletion of nutrients in the local nutrient solution or the accumulation of harmful substances, creates a good growth environment for the hydroponic plant roots, and at the same time helps to improve the accuracy of the root growth monitoring data, ensuring that the monitoring results are not interfered by the fluctuations in the nutrient solution state.

[0050] The liquid return tank 29 has an open structure, which is convenient for observing and cleaning impurities and precipitates in the liquid return tank 29, preventing pipeline blockage, ensuring the cleanliness and fluidity of the nutrient solution, and thus providing a stable and high-quality growth environment for the roots of hydroponic plants. A nutrient solution delivery pump 510 is provided in the middle of the nutrient solution storage tank 51. The nutrient solution delivery pump 510 is communicated with the main delivery pipe 512. A plurality of delivery branch pipes 513 are connected to the main delivery pipe 512. The nutrient solution delivery pump 510 is electrically connected to the control unit 6. When the nutrient solution delivery pump 510 is started, the nutrient solution in the nutrient solution storage tank 51 is pumped out, and the nutrient solution is delivered to each delivery branch pipe 513 through the main delivery pipe 512. The plurality of delivery branch pipes 513 are respectively communicated with the liquid inlet at the rear side of the flow chamber 27, so that the nutrient solution can flow into the flow chamber 27 evenly and stably, providing sufficient nutrients for the roots of hydroponic plants.

[0051] A sensor chamber 59 is provided on one side of the nutrient solution storage tank 51. An EC value sensor, a pH sensor and a liquid temperature sensor are provided in the sensor chamber 59. The EC value sensor, the pH sensor and the liquid temperature sensor are all electrically connected to the control unit 6. It is used to monitor the conductivity, acidity and temperature of the nutrient solution in real time. The control unit 6 can automatically adjust the composition and temperature of the nutrient solution according to the monitored data.

[0052] The present invention also provides a usage method of a planting device with a function of monitoring the growth of hydroponic plant roots, including the following steps:

[0053] S1. Plant the plant seedlings to be hydroponically cultivated in the planting holes on the planting plate 22. According to the type and growth stage of the plants, set parameters such as the initial concentration, acidity and temperature of the nutrient solution through the control unit 6. The control unit 6 controls the operation of the first replenishment pump 56 and the second replenishment pump 57, and supplements the liquids in the acid solution replenishment bottle 52, the alkali solution replenishment bottle 53, the nutrient solution concentrate bottle 54 and the water in the water tank 55 into the nutrient solution storage tank 51 according to the set ratio, and prepares the nutrient solution. Then, start the nutrient solution delivery pump 510 to make the nutrient solution circulate between the hydroponic chamber 23 and the nutrient solution storage tank 51 to ensure uniform distribution of the nutrient solution.

[0054] S2. The light sensor monitors the ambient light intensity in real time and transmits the data to the control unit 6. When the ambient light intensity is insufficient, the control unit 6 automatically starts the LED supplementary light 41 and adjusts the brightness of the LED supplementary light 41 according to the light intensity data to provide sufficient light for the hydroponic plants. When the ambient light intensity reaches the appropriate range, the control unit 6 automatically turns off the LED supplementary light 41 to save energy.

[0055] S3. The EC value sensor, pH sensor, and liquid temperature sensor monitor the conductivity, pH value, and temperature of the nutrient solution in real time and transmit the data to the control unit 6. When the EC value, pH value, or temperature of the nutrient solution deviates from the set range, the control unit 6 controls the operation of the first liquid supplement pump 56 and the second liquid supplement pump 57 according to the deviation situation, supplements the corresponding acidic solution, alkaline solution, nutrient solution concentrate, or water, adjusts the nutrient solution, and restores it to a suitable state. At the same time, the nutrient solution delivery pump 510 operates continuously to ensure the circulating flow of the nutrient solution and provide a stable nutrient supply for the plant roots.

[0056] S4. The control unit 6 controls the operation of the drive motor 315 regularly or as needed. The drive motor 315 drives the drive shaft 314 to rotate, and then the first pulley 312 and the second pulley 313 rotate. The drive belt 316 drives the fixed seat 32 and the image acquisition device 34 to perform linear movement back and forth in front of and behind the hydroponic cavity 23. The image acquisition device 34 acquires images of the root growth conditions on both the front and back sides of the hydroponic cavity 23 and transmits the acquired image data to the control unit 6. The control unit 6 can analyze and process the image data to achieve comprehensive monitoring of the root growth conditions of the hydroponic plants. The staff can view the root growth images and analyze the data through the control unit 6, timely understand the growth status of the plants, and adjust the planting parameters as needed.

[0057] S5. As the plants grow, when it is necessary to adjust the position of the roots in the hydroponic cavity 23, the control unit 6 controls the operation of the electric telescopic rod 26. The electric telescopic rod 26 drives the planting plate 22 to move up and down in the hydroponic tank 21, so that the roots are in a suitable position, ensuring full contact between the roots and the nutrient solution and meeting the needs of different growth stages of the plants.

[0058] Therefore, the present invention adopts the above-mentioned planting device with the function of monitoring the root growth of hydroponic plants and its usage method. Through the coordinated work of each unit, it realizes the precise regulation of the growth environment of hydroponic plants and the real-time monitoring of the root growth status, and has high practicability and popularization value.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A planting device with the function of monitoring the growth of hydroponic plant roots, including a box body, and a hydroponic unit is arranged in the middle of the box body, and is characterized in that: Root growth monitoring units are provided on the front and rear sides of the hydroponic unit. The hydroponic unit includes a hydroponic tank. A planting plate is provided on the top of the hydroponic tank. The two sides of the planting plate are slidably connected to the side walls of the hydroponic tank. A hydroponic cavity is provided on the lower side of the planting plate. Visual windows are provided on the front and rear sides of the hydroponic cavity. Telescopic cavities are symmetrically provided on both sides of the hydroponic cavity. The telescopic cavities are connected to the hydroponic cavity through flexible telescopic walls. Electric telescopic rods connected to the planting plate are provided in the telescopic cavities.

2. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 1, wherein: A lighting unit is provided on the upper side of the hydroponic unit. A liquid storage unit is provided on the lower side of the hydroponic unit. The liquid storage unit is communicated with the hydroponic unit. A control unit is provided on one side of the liquid storage unit. The lighting unit, the hydroponic unit, the liquid storage unit, and the root growth monitoring unit are all electrically connected to the control unit.

3. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 2, characterized in that: The lighting unit includes a light sensor and LED supplementary lights. A plurality of LED supplementary lights are provided. The plurality of LED supplementary lights are arranged in parallel on the inner side of the top of the box body. The light sensor is provided at the rear side of the plurality of LED supplementary lights and is fixedly connected to the box body. The light sensor and the LED supplementary lights are both electrically connected to the control unit.

4. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 3, characterized in that: The liquid storage unit includes a nutrient solution storage tank. An acid solution supplement bottle, an alkali solution supplement bottle, a nutrient solution concentrate bottle, and a water tank are provided on the outer side of the nutrient solution storage tank. The acid solution supplement bottle, the alkali solution supplement bottle, and the nutrient solution concentrate bottle are respectively provided with a first liquid supplement pipe communicated with the nutrient solution storage tank. A first liquid supplement pump is provided on the first liquid supplement pipe. A second liquid supplement pump is provided in the water tank. The second liquid supplement pump is communicated with the nutrient solution storage tank through a second liquid supplement pipe. The first liquid supplement pump and the second liquid supplement pump are both electrically connected to the control unit.

5. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 4, characterized in that: A flow cavity is provided at the bottom of the hydroponic cavity. The front side of the flow cavity is communicated with a liquid return tank through a liquid outlet. The liquid return tank is an open structure. The bottom of the liquid return tank is communicated with the nutrient solution storage tank through a liquid return pipe. A nutrient solution delivery pump is provided in the middle of the nutrient solution storage tank. The nutrient solution delivery pump is communicated with a main liquid delivery pipe. A plurality of liquid delivery branch pipes are connected to the main liquid delivery pipe. The plurality of liquid delivery branch pipes are respectively communicated with the liquid inlet on the rear side of the flow cavity. The nutrient solution delivery pump is electrically connected to the control unit.

6. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 5, characterized in that: A sensor chamber is provided on one side of the nutrient solution storage tank. An EC value sensor, a pH sensor, and a liquid temperature sensor are provided in the sensor chamber. The EC value sensor, the pH sensor, and the liquid temperature sensor are all electrically connected to the control unit.

7. A planting device with a function of monitoring the growth of hydroponic plant roots according to claim 6, characterized in that: The root growth monitoring unit includes two transmission mechanisms arranged parallel to each other in the front and rear. A fixed seat is fixedly connected to the transmission mechanism. The bottom of the fixed seat is connected to an image acquisition device through a connecting rod. The image acquisition device is electrically connected to the control unit.

8. The planting device with the function of monitoring the growth of hydroponic plant roots according to claim 7, characterized in that: Each transmission mechanism includes a support cross beam. The support cross beam is fixedly connected to the inner wall of the box body. A first pulley and a second pulley are respectively provided at both ends of the support cross beam. The first pulley is connected to the second pulley through a transmission belt. A transmission shaft is connected between the two first pulleys. The transmission belt is fixedly connected to the fixed seat. The transmission shaft is connected to a transmission motor. The transmission motor is electrically connected to the control unit.

9. A method for using a planting device with a function of monitoring the growth of hydroponic plant roots as described in claim 8, characterized in that, Including the following steps: S1. Plant the plant seedlings to be hydroponically cultivated in the planting holes on the planting plate. According to the type and growth stage of the plants, set the initial concentration, acidity and alkalinity, and temperature parameters of the nutrient solution through the control unit. Start the nutrient solution delivery pump to make the nutrient solution circulate between the hydroponic cavity and the nutrient solution storage tank; S2. Use a light sensor to continuously monitor the ambient light intensity and transmit the data to the control unit. The control unit turns on and off the LED fill light according to the ambient light intensity. S3. Use an EC value sensor, a pH sensor, and a liquid temperature sensor to continuously monitor the conductivity, pH value, and temperature of the nutrient solution, and transmit the data to the control unit. When the EC value, pH value, or temperature of the nutrient solution deviates from the set range, the control unit controls the operation of the first liquid supplement pump and the second liquid supplement pump according to the deviation situation, supplements the corresponding acid solution, alkali solution, nutrient solution concentrate, or water to adjust the nutrient solution, and at the same time keeps the nutrient solution delivery pump running continuously. S4. The control unit periodically or as needed controls the operation of the transmission mechanism to drive the image acquisition device to linearly move back and forth in front of and behind the hydroponic cavity. The image acquisition device acquires images of the root growth conditions on both the front and back sides of the hydroponic cavity, and transmits the acquired image data to the control unit. The control unit analyzes and processes the image data. The staff can view the root growth images and analyze the data through the control unit and adjust the planting parameters. S5. When it is necessary to adjust the position of the roots in the hydroponic cavity, the control unit controls the operation of the electric telescopic rod. The electric telescopic rod drives the planting plate to move up and down in the hydroponic tank to make the roots in a suitable position.

10. The method of using the planting device with the function of monitoring the growth of hydroponic plant roots according to claim 9, characterized in that: In S1, the control unit controls the operation of the first liquid supplement pump and the second liquid supplement pump to supplement the liquids in the acid solution supplement bottle, alkali solution supplement bottle, nutrient solution concentrate bottle, and the water in the water tank to the nutrient solution storage tank according to a set ratio to prepare the nutrient solution.

Images