Vegetable hydroponic device with LED intelligent lighting system

Abstract

The utility model relates to a kind of vegetable hydroponic device with LED intelligent lighting system, relate to a kind of indoor planting vegetable hydroponic device, to solve the problem that light source in existing vegetable hydroponic device is difficult to realize dynamic spectrum regulation and poor light supplement stability.The growth box, seedling box and nutrient solution tank of the new type are sequentially arranged from top to bottom;Seedling box is used to cultivate seedling;Growth box is used to hold transplanted seedling;Nutrient solution tank is used to store nutrient solution;Illumination sensor is used to obtain the illumination of seedling, preset illumination threshold in main control unit, illumination sensing signal is compared with illumination threshold, and illumination instruction is generated according to comparison result;The illumination instruction output end of main control unit is connected with the illumination instruction input end of three-dimensional light supplement LED light source;Three-dimensional light supplement LED light source emits light according to illumination instruction, and irradiates growth box.Affirmative effect is to improve the light energy utilization rate when high crown layer vegetable is planted and improve the stability of light supplement.

Description

Technical Field

[0001] This utility model relates to a hydroponic device for indoor vegetable cultivation. Background Technology

[0002] Current plant supplemental lighting systems mostly rely on single canopy lighting, which is only suitable for low-growing leafy vegetables such as lettuce. This method has significant limitations when growing tall-canopy vegetables such as cherry tomatoes and cucumbers. As plants grow, the upper leaves can cause shading of the lower leaves, requiring more light to maintain yield and improve production efficiency. In addition, existing indoor growing devices fail to fully consider the differentiated light requirements of plant species and growth stages, as well as the dynamic changes in the ratio of red to blue light in natural light. These issues lead to a mismatch between supplemental lighting and the actual light requirements of plants, ultimately resulting in energy waste.

[0003] Furthermore, existing light source heat dissipation designs are inadequate, easily leading to overheating that affects LED lifespan and the stability of supplemental lighting. Problems such as uneven vertical lighting, poor adaptability to tall-canopy vegetable cultivation, and difficulty in achieving dynamic spectral adjustment in current plant supplemental lighting systems urgently need to be addressed. Utility Model Content

[0004] The purpose of this invention is to solve the problems of the light source in existing vegetable hydroponic devices being difficult to dynamically adjust the spectrum and the light supplementation stability being poor. This invention proposes a vegetable hydroponic device with an LED intelligent lighting system.

[0005] The vegetable hydroponic device with an LED intelligent lighting system described in this utility model includes a growth box, a seedling box, and a nutrient solution box.

[0006] The growth box, seedling box, and nutrient solution tank are arranged sequentially from top to bottom; the seedling box is used to cultivate seedlings; the growth box is used to hold transplanted seedlings; and the nutrient solution tank is used to store nutrient solution.

[0007] It also includes a stereo LED light source, a main controller, and a light sensor;

[0008] The light sensor is used to obtain the light intensity of the seedlings, and the light intensity sensing signal output terminal of the light sensor is connected to the light intensity sensing signal input terminal of the main controller.

[0009] The main controller has a preset illumination threshold and compares the illumination sensing signal with the illumination threshold, and generates an illumination command based on the comparison result; the illumination command output terminal of the main controller is connected to the illumination command input terminal of the three-dimensional supplementary lighting LED light source.

[0010] The three-dimensional supplemental LED light source emits light according to the illuminance command and illuminates the growth chamber.

[0011] Furthermore, the three-dimensional supplemental lighting LED light source includes a red LED light, a blue LED light, a blue light strip, a red light strip, a transparent protective shell, and an inner aluminum tube;

[0012] Both the transparent protective shell and the inner aluminum tube are cylindrical structures; and the inner aluminum tube is coaxially arranged inside the transparent protective shell.

[0013] Both the blue and red light strips are arranged along the length of the inner aluminum tube, and the blue and red light strips are arranged alternately along the circumference of the inner aluminum tube.

[0014] The red LED lights are arranged along the length of the red light strip; and multiple red LED lights arranged on the same red light strip are connected in parallel to both ends of the power supply via connecting wires.

[0015] The blue LED lights are arranged along the length of the blue light strip; and multiple blue LED lights arranged on the same blue light strip are connected in parallel to both ends of the power supply via connecting wires.

[0016] Furthermore, it also includes the supporting framework;

[0017] The growth box is fixed in the middle of the support frame; the seedling box and the nutrient solution box are fixed in the lower part of the support frame.

[0018] Furthermore, it also includes temperature sensors and temperature control units;

[0019] The temperature sensor is used to collect the temperature inside the nutrient solution tank, and the temperature sensor's output terminal is connected to the temperature sensor's input terminal of the main controller.

[0020] The main controller has a preset temperature threshold, which is used to compare the temperature sensing signal with the temperature threshold and generate a temperature control command based on the comparison result; the temperature control command output terminal of the main controller is connected to the temperature control command input terminal of the temperature control unit.

[0021] The temperature control unit controls the temperature of the nutrient solution tank according to the temperature control command.

[0022] Furthermore, this also includes liquid level sensors;

[0023] The liquid level sensor is used to collect the liquid level height in the nutrient solution tank, and the liquid level sensor's liquid level sensing signal output terminal is connected to the liquid level sensing signal input terminal of the main controller.

[0024] Furthermore, it also includes a pH sensor;

[0025] The pH sensor is used to collect the pH value of the nutrient solution in the nutrient solution tank, and the pH sensor's pH signal output terminal is connected to the pH signal input terminal of the main controller.

[0026] Furthermore, it also includes an electrically regulated stimulation unit;

[0027] The electrically regulated stimulation unit is installed inside the seedling box, and the growth signal output terminal of the main controller is connected to the growth signal input terminal of the electrically regulated stimulation unit.

[0028] Furthermore, it also includes a display screen;

[0029] The display signal input terminal of the display screen is connected to the display signal output terminal of the main controller; and the display screen is fixed on the upper part of the support frame.

[0030] Furthermore, the display screen includes a growth stage display area, a nutrient solution monitoring area, a light intensity display area, and a root electrical stimulation display area;

[0031] The growth stage display area is located on the right side of the display screen; the nutrient solution monitoring area, light intensity display area, and root electrical stimulation display area are all located on the left side of the display screen, with the light intensity display area located between the nutrient solution monitoring area and the root electrical stimulation display area; the growth stage display area is used to display the current growth stage of the seedling; the nutrient solution monitoring area is used to display the height of the nutrient solution in the nutrient solution tank, the temperature of the nutrient solution, and the pH value of the nutrient solution; the light intensity display area is used to display the light intensity of the seedling; and the root electrical stimulation display area is used to display the voltage value and stimulation time of the root electrical stimulation.

[0032] Furthermore, reflective films are also included;

[0033] The reflective film is affixed to the front, back, left, and right side walls of the support frame.

[0034] Compared with the prior art, the present invention has the following advantages:

[0035] The novel three-dimensional supplemental lighting LED light source adopts a hollow cylindrical structure, and the light emitted by the three-dimensional supplemental lighting LED light source can be diffused in all directions 360°. It avoids the unidirectional direct light energy loss of existing top supplemental lighting, and is especially suitable for high-canopy vegetables. In addition, through the coordinated use of the three-dimensional supplemental lighting LED light source, main controller and light sensor, it can automatically adjust the illuminance of the plant. Furthermore, the three-dimensional supplemental lighting LED light source supports segmented lighting according to plant height, avoiding ineffective energy consumption during full-power operation. The three-dimensional supplemental lighting LED light source can also meet the differentiated needs of plants for the ratio of red and blue light at different growth stages. The light source can achieve dynamic spectral control, significantly improving the light energy utilization rate and the stability of supplemental lighting when growing high-canopy vegetables. Attached Figure Description

[0036] Figure 1 This is a three-dimensional structural diagram of a vegetable hydroponic device with an LED intelligent lighting system as described in Specific Embodiment 1.

[0037] Figure 2 This is a block diagram illustrating the working principle of a vegetable hydroponic device with an LED intelligent lighting system in Specific Implementation Method 1.

[0038] Figure 3 This is a side view of the stereoscopic supplementary LED light source in Specific Implementation Method Two;

[0039] Figure 4 This is a top view of the stereoscopic supplementary LED light source in Specific Implementation Method Two;

[0040] Figure 5 This is a schematic diagram of the red light strip in the second specific implementation method;

[0041] Figure 6 This is a schematic diagram of the blue light strip in the second specific implementation method;

[0042] Figure 7 This is a schematic diagram of the partitioned display structure of the display in Specific Implementation Method Nine.

[0043] In the diagram, 1 is a 3D supplemental LED light source; 1-1 is a red LED light; 1-2 is a blue LED light; 1-3 is a blue light strip; 1-4 is a red light strip; 1-5 is a connecting wire; 1-6 is a transparent protective shell; 1-7 is an inner aluminum tube; 2 is a growth box; 3 is a seedling box; 4 is a nutrient solution tank; 5 is a display screen; 5-1 is a growth stage display area; 5-2 is a nutrient solution monitoring area; 5-3 is a light intensity display area; 5-4 is a root system electrical stimulation display area; 6 is a support frame; 7 is a reflective film; 8 is the main controller; 9 is a light sensor; 10 is the first water pump; 11 is the second water pump; 12 is a temperature sensor; 13 is a temperature control unit; 14 is a pH sensor; 15 is an electrical stimulation unit; 16 is a liquid level sensor; and 17 is a WIFI unit. Detailed Implementation

[0044] Specific Implementation Method 1: Combination Figures 1 to 2 This embodiment describes a vegetable hydroponic device with an LED intelligent lighting system, comprising a growth box 2, a seedling box 3, and a nutrient solution box 4.

[0045] The growth box 2, seedling box 3, and nutrient solution tank 4 are arranged sequentially from top to bottom; the seedling box 3 is used to cultivate seedlings; the growth box 2 is used to hold the transplanted seedlings; and the nutrient solution tank 4 is used to store nutrient solution.

[0046] It also includes a stereo lighting LED light source 1, a main controller 8, and a light sensor 9;

[0047] The light sensor 9 is used to obtain the light intensity of the seedlings, and the light intensity sensing signal output terminal of the light sensor 9 is connected to the light intensity sensing signal input terminal of the main controller 8.

[0048] The main controller 8 has a preset illumination threshold and compares the illumination sensing signal with the illumination threshold, and generates an illumination command based on the comparison result; the illumination command output terminal of the main controller 8 is connected to the illumination command input terminal of the stereo lighting LED light source 1.

[0049] The three-dimensional supplemental LED light source 1 emits light according to the illuminance command and illuminates the growth box 2.

[0050] In this embodiment, the main controller 8 uses an STM32F103VET6 as the main control unit, with a built-in adaptive supplementary lighting algorithm. It dynamically adjusts the red-blue light ratio, light intensity, and light cycle based on the illuminance sensing signal from the light sensor 9. The three-dimensional supplementary lighting LED light source 1 is vertically mounted on the growth box 2. The three-dimensional supplementary lighting LED light source 1 supports segmented lighting, activating corresponding light strips based on plant height to reduce ineffective energy consumption. The main controller 8 is responsible for sensor data acquisition and processing, execution of the dynamic supplementary lighting algorithm, and coordinated control of various functional modules. It also transmits the processed environmental data to the human-machine interface module and cloud server via serial port. After outputting illuminance commands, the main controller 8 provides constant current drive to the three-dimensional supplementary lighting LED light source 1 through the supplementary lighting node drive circuit. In addition, it supports brightness adjustment based on PWM duty cycle, achieving dynamic control of the three-dimensional supplementary lighting LED light source 1. The main controller 8 obtains real-time temperature information of the supplementary lighting nodes through temperature and humidity sensors. Based on the set temperature and humidity thresholds, the main controller 8 controls the water pump to start water cooling circulation to prevent overheating of the growth box 2.

[0051] In this embodiment, a WIFI unit 17 is also included. The WIFI unit 17 enables the system to connect to the network and connect to the cloud platform via the MQTT protocol for uploading system data and remote monitoring. It is also used to input various preset temperature and humidity thresholds, temperature threshold, pH threshold, liquid level threshold, light intensity threshold, and the magnitude and duration of the growth signal of the electrically regulated stimulation unit through the WIFI unit 17.

[0052] The light sensor 9 converts the current signal output by the silicon photovoltaic cell into a voltage signal through a sampling resistor. Then, the voltage signal is output to the ADC interface of the main controller 8 via a voltage follower composed of an operational amplifier. The voltage follower mainly serves to match impedance, isolate the preceding and following circuits, buffer signals, and suppress noise, thereby improving the accuracy of the voltage acquired by the ADC. To prevent abnormal voltage fluctuations from damaging the main controller 8, a 3.3 V Zener diode is connected in parallel at its front end for voltage clamping protection.

[0053] The nutrient solution tank 4, located at the bottom of the device, is primarily used to store the nutrient solution required for plant growth. The system circulates the nutrient solution to the growth tank 2 via a first water pump 10, and to the seedling tank 3 via a second water pump 11, thus providing nutrition for both the seedling and growth stages. A canopy lighting design is employed, with LED light sources installed above the seedling layer. Considering the typical growth height of cucumber and tomato seedlings, the seedling layer height is set at 20 cm, ensuring efficient space utilization while meeting the seedlings' growth needs. The growth tank 2, used for subsequent plant cultivation stages, has an overall height of 90 cm and is designed with multiple planting troughs; for example, it is divided into a left planting trough and a right planting trough.

[0054] Specific Implementation Method Two: Combination Figures 3 to 6 This embodiment further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Embodiment 1. In this embodiment, the three-dimensional supplementary LED light source 1 includes a red LED lamp 1-1, a blue LED lamp 1-2, a blue light strip 1-3, a red light strip 1-4, a transparent protective shell 1-6, and an inner aluminum tube 1-7.

[0055] Both the transparent protective shell 1-6 and the inner aluminum tube 1-7 are cylindrical structures; and the inner aluminum tube 1-7 is coaxially arranged inside the transparent protective shell 1-6.

[0056] The blue light strip 1-3 and the red light strip 1-4 are both arranged along the length of the inner aluminum tube 1-7, and the blue light strip 1-3 and the red light strip 1-4 are arranged alternately along the circumference of the inner aluminum tube 1-7.

[0057] The red LED light 1-1 is arranged along the length of the red light strip 1-4; and multiple red LED lights 1-1 arranged on the same red light strip 1-4 are connected in parallel to the two ends of the power supply through the connecting wire 1-5.

[0058] The blue LED lights 1-2 are arranged along the length of the blue light strip 1-3; and multiple blue LED lights 1-2 arranged on the same blue light strip 1-3 are connected in parallel to both ends of the power supply via connecting wire 1-5.

[0059] In this embodiment, the transparent protective shell 1-6 is made of transparent polycarbonate tubing with UV resistance, possessing excellent light transmittance and mechanical strength. This ensures uniform light transmission while protecting the internal components of the supplementary lighting node. Due to the poor thermal conductivity of PC material, heat is primarily confined within the supplementary lighting node, effectively preventing adverse effects on vegetable growth from external temperature increases. The inner aluminum tube 1-7 serves as a supporting frame, made of high thermal conductivity aluminum, rapidly conducting the LED's operating heat to the external environment and preventing localized overheating. The LED light strip is divided into red and blue LED strips. The red LED 1-1 uses a red LED with a peak wavelength of 660nm; the blue LED 1-2 uses a blue LED with a peak wavelength of 445nm, with a single LED power of 0.5W, high spectral purity, and suitability for the efficient absorption bands of plant photosynthesis, namely red light 640-680nm and blue light 440-460nm. The LED strip adopts a parallel-then-series circuit structure. Each strip consists of 8 LED beads connected in parallel with a vertical spacing of 3.5cm. Adjacent strips are connected in series, supporting independent control of red and blue light. Only the most basic connections are made to the LED beads on the LED strip. Positive and negative solder joints are reserved at both ends of the strip, and one end is selected for soldering to facilitate subsequent connections between strips and with the driving circuit. Thermally conductive tape is applied to the outside of the connecting lines 1-5 to firmly adhere the LED strip to the inner aluminum tube 1-7, forming a stable cylindrical structure. The LED beads on the LED strip are arranged in a linear array in the vertical direction and in a ring array in the circumferential direction. The three-dimensional supplementary lighting LED light source 1 has blue LED strips 1-3 and red LED strips 1-4 arranged alternately along the outer surface of the inner aluminum tube 1-7 to achieve uniform distribution of red and blue light irradiation in both the vertical and ring directions. The red and blue light ratio and light intensity can be independently adjusted by the main controller 8 to meet the light formula requirements of different stages of plant growth, such as seedling stage and flowering and fruiting stage. Both the blue light strips 1-3 and the red light strips 1-4 can be lit in segments according to the height of the plant, reducing ineffective energy consumption; the overall structure supports height adjustment to adapt to the height of plants at different growth stages.

[0060] In this embodiment, common printed circuit board types include epoxy glass cloth laminate, aluminum substrate, and flexible circuit board. FR4 is inexpensive and has high mechanical stability, making it suitable for multilayer boards and complex circuit designs, but its thermal conductivity is poor. Aluminum substrate has excellent thermal conductivity, which helps with heat dissipation management, but it only supports single-layer wiring, limiting the flexibility of circuit design. FPC has good flexibility, can better fit cylindrical supplementary lighting nodes, and has good structural adaptability, but its manufacturing cost is high. Considering both heat dissipation capacity and manufacturing cost, this embodiment uses an aluminum substrate as the material for the LED light strip. This structure connects the LED chips through the aluminum substrate. To better adapt to the cylindrical structure, the LED light board adopts a narrow strip design. The height of the supplementary lighting node is set to 90cm, the outer diameter of the transparent protective shell 1-6 is 6.5cm, and the outer diameter of the inner aluminum tube 1-7 is 5cm.

[0061] Specific Implementation Method 3: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method 2. In this implementation method, a support frame 6 is also included.

[0062] The growth box 2 is fixed in the middle of the support frame 6; the seedling box 3 and the nutrient solution box 4 are fixed in the lower part of the support frame 6.

[0063] In this embodiment, the support frame 6 serves as a supporting skeleton. The support frame 6 is mainly composed of four vertically fixed columns, and has casters at its bottom for easy movement.

[0064] Specific Implementation Method 4: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method 3. In this implementation method, a temperature sensor 12 and a temperature control unit 13 are also included.

[0065] The temperature sensor 12 is used to collect the temperature inside the nutrient solution tank 4, and the temperature sensing signal output terminal of the temperature sensor 12 is connected to the temperature sensing signal input terminal of the main controller 8.

[0066] The main controller 8 has a preset temperature threshold, which is used to compare the temperature sensing signal with the temperature threshold and generate a temperature control command based on the comparison result; the temperature control command output terminal of the main controller 8 is connected to the temperature control command input terminal of the temperature control unit 13.

[0067] The temperature control unit 13 controls the temperature of the nutrient solution tank 4 according to the temperature control command.

[0068] In this embodiment, the temperature inside the nutrient solution tank 4 is obtained by the temperature sensor 12. When the temperature inside the nutrient solution tank 4 is higher than the temperature threshold, the temperature control unit 13 cools down the nutrient solution tank 4. When the temperature inside the nutrient solution tank 4 is lower than the temperature threshold, the temperature control unit 13 heats up the nutrient solution tank 4. Through the coordinated use of the main controller 8, the temperature sensor 12 and the temperature control unit 13, the temperature inside the nutrient solution tank 4 is kept constant.

[0069] Specific Implementation Method 5: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method 4. In this implementation method, a liquid level sensor 16 is also included.

[0070] The liquid level sensor 16 is used to collect the liquid level height in the nutrient solution tank 4, and the liquid level sensor 16 is connected to the liquid level sensor input terminal of the main controller 8.

[0071] In this embodiment, the liquid level sensor 16 is a non-contact capacitive liquid level sensor. The capacitive liquid level sensor 16 determines the liquid level by detecting changes in the induced capacitance of the liquid. When no liquid is near the liquid level sensor 16, only distributed capacitance exists on the sensor 16, resulting in a certain static capacitance to ground. As the liquid level in the nutrient solution tank 4 rises and gradually approaches the sensor, the parasitic resistance of the liquid couples to the sensor circuit, increasing the total capacitance of the sensor. The external circuit determines the liquid level by monitoring the capacitance changes.

[0072] Specific Implementation Method Six: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method Five. In this implementation method, a pH sensor 14 is also included.

[0073] The pH sensor 14 is used to collect the pH value of the nutrient solution in the nutrient solution tank 4, and the pH sensing signal output terminal of the pH sensor 14 is connected to the pH sensing signal input terminal of the main controller 8.

[0074] In this embodiment, the pH sensor 14 monitors the pH value of the nutrient solution. The pH sensor 14 uses a pH electrode composed of an indicator electrode and a reference electrode. The sensitive film of the indicator electrode is sensitive to changes in hydrogen ion concentration, and its potential changes with the pH value of the solution. The reference electrode provides a stable reference potential. The relative voltage output by the pH electrode is linearly related to the pH value. This voltage signal is amplified and filtered by an operational amplifier and then input to the ADC interface of the main controller. After conversion, the actual pH value is obtained. Since temperature affects the membrane potential of the glass electrode in the pH electrode and the activity of ions in the solution, it affects the acquisition of the pH value. Therefore, a waterproof DS18B20 temperature sensor is used in the pH monitoring sensor to measure the temperature of the nutrient solution simultaneously with the pH value.

[0075] Specific Implementation Method Seven: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method Six. In this implementation method, an electrically regulated stimulation unit 15 is also included.

[0076] The electrically regulated stimulation unit 15 is installed inside the seedling box 3, and the growth signal output terminal of the main controller 8 is connected to the growth signal input terminal of the electrically regulated stimulation unit 15.

[0077] In this embodiment, the seedling box 3 is used for the early cultivation of plant seedlings and integrates an electro-stimulation unit 15, which can apply controllable electro-regulation signals to the plant roots during the seedling stage. The electro-stimulation unit 15 is used to apply controllable voltage or current to the plant roots, and the timing and intensity can be controlled by the main controller 8. It is used for periodic electro-regulation in the middle and late stages of seedling cultivation to promote vegetable growth. The electro-stimulation unit 15 adopts a detachable design, and the conductive electrodes are connected to the positive and negative terminals of the power supply through alligator clips, which facilitates the replacement of different types of electrode materials according to different needs. To ensure that an electric field can be effectively generated in the nutrient solution environment and to adapt to different planting baskets, a three-layer structure of "electrode + conductive sponge + electrode" is designed.

[0078] Specific Implementation Method 8: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method 7. In this implementation method, a display screen 5 is also included.

[0079] The display signal input terminal of the display screen 5 is connected to the display signal output terminal of the main controller 8; and the display screen 5 is fixed on the upper part of the support frame 6.

[0080] In this embodiment, the current environmental conditions and real-time supplemental lighting status are observed through the display screen 5, and the nutrient solution level and root system regulation are monitored. The current growth stage of the plant and the light formula can be seen from the display screen 5, which is visually accessible.

[0081] Detailed Implementation Method Nine: Combination Figure 7 This embodiment further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Embodiment Eight. In this embodiment, the display screen 5 includes a growth stage display area 5-1, a nutrient solution monitoring area 5-2, a light intensity display area 5-3, and a root electro-stimulation display area 5-4.

[0082] The growth stage display area 5-1 is located on the right side of the display screen 5; the nutrient solution monitoring area 5-2, the light intensity display area 5-3, and the root electrical stimulation display area 5-4 are all located on the left side of the display screen 5, with the light intensity display area 5-3 located between the nutrient solution monitoring area 5-2 and the root electrical stimulation display area 5-4; the growth stage display area 5-1 is used to display the current growth stage of the seedling; the nutrient solution monitoring area 5-2 is used to display the height of the nutrient solution in the nutrient solution tank 4, the temperature of the nutrient solution, and the pH value of the nutrient solution; the light intensity display area 5-3 is used to display the light intensity of the seedling; and the root electrical stimulation display area 5-4 is used to display the voltage value and stimulation time of the root electrical stimulation.

[0083] Specific Implementation Method 10: This implementation method further defines the vegetable hydroponic device with an LED intelligent lighting system described in Specific Implementation Method 3. In this implementation method, a reflective film 7 is also included.

[0084] The reflective film 7 is attached to the front, back, left, and right side walls of the support frame 6.

[0085] In this embodiment, the reflective film 7 is placed in the plant growth layer, which can reflect light emitted outside the planting area back into the planting area. Through uniformity testing, it was found that the addition of the reflective film 7 can effectively improve the light energy utilization efficiency of side supplementary lighting and improve the uniformity of light received by the plant.

[0086] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A vegetable hydroponic device with an LED intelligent lighting system, comprising a growth box (2), a seedling box (3) and a nutrient solution box (4). The growth box (2), seedling box (3) and nutrient solution box (4) are arranged from top to bottom; the seedling box (3) is used to cultivate seedlings; the growth box (2) is used to hold the transplanted seedlings; the nutrient solution box (4) is used to store nutrient solution. Its features are, It also includes a stereo lighting LED light source (1), a main controller (8) and a light sensor (9); The light sensor (9) is used to obtain the light intensity of the seedlings, and the light intensity sensing signal output terminal of the light sensor (9) is connected to the light intensity sensing signal input terminal of the main controller (8). The main controller (8) has a preset illumination threshold and compares the illumination sensing signal with the illumination threshold. It generates an illumination command based on the comparison result. The illumination command output terminal of the main controller (8) is connected to the illumination command input terminal of the three-dimensional supplementary lighting LED light source (1). The three-dimensional supplemental LED light source (1) emits light according to the illuminance command and illuminates the growth box (2).

2. The vegetable hydroponic device with an LED intelligent lighting system according to claim 1, characterized in that, The three-dimensional supplementary LED light source (1) includes a red LED light (1-1), a blue LED light (1-2), a blue light strip (1-3), a red light strip (1-4), a transparent protective shell (1-6), and an inner aluminum tube (1-7). Both the transparent protective shell (1-6) and the inner aluminum tube (1-7) are cylindrical structures; and the inner aluminum tube (1-7) is coaxially arranged inside the transparent protective shell (1-6); The blue light strip (1-3) and the red light strip (1-4) are both arranged along the length of the inner aluminum tube (1-7), and the blue light strip (1-3) and the red light strip (1-4) are arranged alternately along the circumference of the inner aluminum tube (1-7); The red LED light (1-1) is arranged along the length of the red light strip (1-4); and multiple red LED lights (1-1) arranged on the same red light strip (1-4) are connected in parallel to both ends of the power supply via connecting wire (1-5); The blue LED lights (1-2) are arranged along the length of the blue light strip (1-3); and multiple blue LED lights (1-2) arranged on the same blue light strip (1-3) are connected in parallel to both ends of the power supply via connecting wire (1-5).

3. A vegetable hydroponic device with an LED intelligent lighting system according to claim 2, characterized in that, It also includes the support framework (6); The growth box (2) is fixed in the middle of the support frame (6); the seedling box (3) and the nutrient solution box (4) are fixed in the lower part of the support frame (6).

4. A vegetable hydroponic device with an LED intelligent lighting system according to claim 3, characterized in that, It also includes a temperature sensor (12) and a temperature control unit (13). The temperature sensor (12) is used to collect the temperature inside the nutrient solution tank (4), and the temperature sensing signal output terminal of the temperature sensor (12) is connected to the temperature sensing signal input terminal of the main controller (8). The main controller (8) has a preset temperature threshold, which is used to compare the temperature sensing signal with the temperature threshold and generate a temperature control command based on the comparison result; the temperature control command output terminal of the main controller (8) is connected to the temperature control command input terminal of the temperature control unit (13); The temperature control unit (13) controls the temperature of the nutrient solution tank (4) according to the temperature control command.

5. A vegetable hydroponic device with an LED intelligent lighting system according to claim 4, characterized in that, It also includes a liquid level sensor (16). The liquid level sensor (16) is used to collect the liquid level height in the nutrient solution tank (4), and the liquid level sensor (16) is connected to the liquid level sensor (8) input terminal.

6. A vegetable hydroponic device with an LED intelligent lighting system according to claim 5, characterized in that, It also includes a pH sensor (14); The pH sensor (14) is used to collect the pH value of the nutrient solution in the nutrient solution tank (4), and the pH sensing signal output terminal of the pH sensor (14) is connected to the pH sensing signal input terminal of the main controller (8).

7. A vegetable hydroponic device with an LED intelligent lighting system according to claim 6, characterized in that, It also includes an electrically regulated stimulation unit (15); The electrically regulated stimulation unit (15) is set inside the seedling box (3), and the growth signal output terminal of the main controller (8) is connected to the growth signal input terminal of the electrically regulated stimulation unit (15).

8. A vegetable hydroponic device with an LED intelligent lighting system according to claim 7, characterized in that, It also includes a display screen (5); The display signal input terminal of the display screen (5) is connected to the display signal output terminal of the main controller (8); and the display screen (5) is fixed on the upper part of the support frame (6).

9. A vegetable hydroponic device with an LED intelligent lighting system according to claim 8, characterized in that, The display screen (5) includes a growth stage display area (5-1), a nutrient solution monitoring area (5-2), a light intensity display area (5-3), and a root electrical stimulation display area (5-4). The growth stage display area (5-1) is located on the right side of the display screen (5); the nutrient solution monitoring area (5-2), the light intensity display area (5-3), and the root electrical stimulation display area (5-4) are all located on the left side of the display screen (5), and the light intensity display area (5-3) is located between the nutrient solution monitoring area (5-2) and the root electrical stimulation display area (5-4); the growth stage display area (5-1) is used to display the current growth stage of the seedling; the nutrient solution monitoring area (5-2) is used to display the height of the nutrient solution in the nutrient solution tank (4), the temperature of the nutrient solution, and the pH value of the nutrient solution; the light intensity display area (5-3) is used to display the light intensity of the seedling; and the root electrical stimulation display area (5-4) is used to display the voltage value and stimulation time of the root electrical stimulation.

10. A vegetable hydroponic device with an LED intelligent lighting system according to claim 3, characterized in that, It also includes reflective film (7); The reflective film (7) is attached to the front, back, left and right side walls of the support frame (6).

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