Intelligent soilless culture cabinet and control method and system thereof

Abstract

This invention discloses an intelligent hydroponic cultivation cabinet and its control system. The intelligent hydroponic cultivation cabinet uses a temperature sensor and an air conditioning system to regulate the working temperature within the working chamber, ensuring optimal growth during planting. It also uses a humidity sensor and a humidification system to regulate the working humidity within the working chamber, maintaining optimal growth humidity. Furthermore, the coordinated operation of a fresh air system, a nutrient solution circulation system, and lighting provides a suitable environment for plant growth, ensuring healthy plant development. The control system for this intelligent hydroponic cultivation cabinet can be customized with planting plans based on the variety of hydroponic plants. The system automatically adjusts the lighting, nutrient solution concentration, temperature, and humidity according to the planting plan, providing a more suitable environment for plant growth. Moreover, the operation is simpler, requiring minimal manual intervention.

Description

Technical Field

[0001] This invention relates to an intelligent hydroponic cultivation cabinet and a control system for the intelligent hydroponic cultivation cabinet. Background Technology

[0002] The growth of crops in the natural environment is usually affected by factors such as soil fertility, sunlight, temperature, pests and diseases, and rainfall. Moreover, a sterile environment cannot be achieved, which is why soilless cultivation has emerged. Existing soilless cultivation cabinets require regular manual intervention, making operation relatively cumbersome.

[0003] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0004] To address the aforementioned technical problem that existing hydroponic cultivation cabinets require periodic manual intervention and are cumbersome to operate, the present invention provides the following solution: an intelligent hydroponic cultivation cabinet, comprising: a cabinet body with a working chamber, the cabinet body having a door for opening or closing the working chamber, the working chamber having shelves for placing planting trays, the cabinet body having: an air conditioning system for supplying cold air to the working chamber, a fresh air system for blowing air onto the plants in the planting trays, a nutrient solution circulation system for providing nutrient solution to the planting trays, a humidification system for increasing the humidity in the working chamber, and lighting fixtures for providing light to the plants in the planting trays; the cabinet body also has a control device for controlling the operation of the air conditioning system, fresh air system, nutrient solution circulation system, humidification system, and lighting fixtures; the working chamber has a temperature sensor for detecting the temperature inside the working chamber and a humidity sensor for detecting the humidity inside the working chamber, the temperature sensor and humidity sensor being electrically connected to the control device. As described above, an intelligent hydroponic cultivation cabinet has an outer shell on its body, a rear partition on the rear side of the working chamber, a cold air channel between the rear partition and the outer shell, a cold air inlet connected to the cold air output port of an air conditioning system on the cold air channel, a first cold air blower on the rear partition corresponding to the number of planting trays and capable of blowing cold air onto the planting trays, an upper partition on the top of the working chamber, a reflux chamber between the upper partition and the outer shell, and a reflux hole on the upper partition connecting the reflux chamber and the working chamber.

[0005] As described above, the intelligent hydroponics cabinet includes an air conditioning system comprising a compressor, a condenser, an expansion valve, and an evaporator. The compressor, condenser, expansion valve, and evaporator are interconnected by pipes. The evaporator is located at the cold air inlet. The return chamber is equipped with a cold air cross-flow fan for blowing the cold air generated by the evaporator into the cold air channel.

[0006] As described above, the intelligent soilless cultivation cabinet includes a humidification system comprising: a humidifier for generating moisture and a moisture delivery assembly for delivering moisture to the working chamber. The humidifier is disposed inside the cabinet. The moisture delivery assembly comprises: a main delivery pipe connected to the moisture output end of the humidifier and multiple secondary delivery pipes connected to the main delivery pipe. The secondary delivery pipes are provided with multiple first moisture output ports for moisture output.

[0007] As described above, an intelligent soilless cultivation cabinet includes a nutrient solution circulation system comprising: a nutrient solution storage tank, a delivery pipe, a seed pump, and a return pipe. One end of the delivery pipe extends into the bottom of the nutrient solution storage tank, and the seed pump is connected in series with the delivery pipe. The other end of the delivery pipe is connected to the inlet of the planting tray. One end of the return pipe is connected to the outlet of the planting tray, and the other end of the return pipe is connected to the nutrient solution storage tank. The nutrient solution storage tank is equipped with a conductivity sensor for detecting the total ion concentration of the nutrient solution. The cabinet contains a mother liquor bottle for storing nutrient mother liquor. The mother liquor bottle is connected to a conduit for transporting the nutrient mother liquor in the mother liquor bottle to the nutrient solution storage tank. A delivery pump is connected in series with the conduit. The seed pump, conductivity sensor, delivery pump, and control device are electrically connected.

[0008] As described above, an intelligent soilless cultivation cabinet has a material storage chamber located below the working chamber, and a nutrient solution storage tank is installed inside the material storage chamber. The material storage chamber and the working chamber are connected.

[0009] As described above, an intelligent hydroponic cultivation cabinet includes a shelf comprising a left frame and a right frame. A fresh air system is vertically spaced between the left and right frames. The fresh air system includes a box with an air supply channel, which is connected between the left and right frames. Each side of the box has an air inlet, and each air inlet is connected to a blower fan for blowing air into the air supply channel. The planting tray is placed on the upper surface of the box. The bottom surface of the box is evenly provided with multiple blower mesh holes for blowing air onto the plants on the planting tray. Each blower mesh hole communicates with the air supply channel. The light fixture is located on the bottom surface of the box.

[0010] As described above, an intelligent hydroponic cultivation cabinet has seedling trays on its shelves and a seedling solution circulation system inside the cabinet for providing nutrient solution to the seedling trays. The seedling solution circulation system includes a seedling solution storage tank, a delivery pipe, a seedling water pump, and a return pipe. One end of the delivery pipe extends into the bottom of the seedling solution storage tank, and the seedling water pump is connected in series with the delivery pipe. The other end of the delivery pipe is connected to the inlet of the seedling tray. One end of the return pipe is connected to the outlet of the seedling tray, and the other end of the return pipe is connected to the seedling solution storage tank.

[0011] The present invention provides a control method for an intelligent hydroponics cabinet as described above, comprising the following steps: Step 01: Power on; Step 02: Obtain the temperature t1 inside the working chamber using a temperature sensor, the humidity RH1 inside the working chamber using a humidity sensor, and the ion concentration EC1 of the nutrient solution in the nutrient solution storage tank using a conductivity sensor; Step 03: Seedling establishment period. After placing the seeds in the seedling tray, turn on the lights continuously for 9-11 hours a day, and turn them off for the rest of the time. When the lights are on, control the temperature at 21-23℃ and when the lights are off, control the temperature at 14-16℃, control the humidity at 65-70%RH, and control the ion concentration of the nutrient solution at 600-800μS / cm. Repeat this cycle for 7-8 days to obtain seedlings. Step 04: Growth Period 1. After transplanting the seedlings into the planting trays, turn on the lights continuously for 11-13 hours a day, and turn them off for the rest of the time. When the lights are on, control the temperature at 21-23℃ and when the lights are off, control the temperature at 14-16℃, control the humidity at 60-65%RH, and control the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 03: Growth Period 2, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1400-1600μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 04: During the vigorous growth period, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1600-1800μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 05: During the pre-harvest hardening-off period, continue planting in the planting trays. Keep the lights on for 11-13 hours continuously throughout the day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 17-19℃ and when the lights are off, keep the temperature at 11-13℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days until harvest.

[0012] The present invention provides a control system for an intelligent hydroponics cabinet, which comprises the following steps during operation: S01: Power on; S02: Obtain the varieties of hydroponic plants to be planted; S03: Manually input or call the database to generate a planting plan for plants, which includes the on and off times of the lights, the target concentration of nutrient solution in the nutrient solution storage tank, the start and end times of the fresh air system, the target humidity value of the air in the working chamber, the start and end times of the air conditioning system and the target temperature, and the start duration and interval of the seed pump. S04: The system operates automatically according to the planting plan, specifically including: starting or turning off the lights according to the light-on and light-off times; controlling the operation of the nutrient solution circulation system according to the target concentration of the nutrient solution in the nutrient solution storage tank; starting or turning off the fresh air system according to the start and end times of the fresh air system; starting the humidification system according to the target humidity value of the air in the working chamber; starting the air conditioning system according to the start and end times of the air conditioning system and the target temperature; and starting the water pump according to the start duration and interval of the seed water pump. S05: System shutdown.

[0013] The beneficial effects of this invention are: 1. The intelligent soilless cultivation cabinet of the present invention can adjust the working temperature in the working chamber through temperature sensors and air conditioning system to ensure the most suitable growth temperature during planting. It can also adjust the working humidity in the working chamber through the cooperation of humidity sensors and humidification system to ensure the most suitable growth humidity during planting. Through the coordinated cooperation of fresh air system, nutrient solution circulation system and lighting, it can provide a suitable environment for plant growth and ensure the healthy growth of plants.

[0014] 2. The control system for the intelligent hydroponic cultivation cabinet of the present invention can set up planting plans according to the varieties of hydroponic plants. The system automatically adjusts the light, nutrient solution concentration, temperature and humidity according to the planting plan to provide a more suitable environment for plant growth. Moreover, the operation is simpler and requires less manual intervention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the soilless enclosed cultivation cabinet of the present invention; Figure 2 This is an exploded view of the soilless enclosed cultivation cabinet of the present invention; Figure 3 This is a three-dimensional sectional view of the soilless enclosed cultivation cabinet of the present invention; Figure 4 for Figure 3 An enlarged view of part A marked in the middle; Figure 5 This is one of the schematic diagrams showing the positional relationship between the nutrient solution circulation system and the planting tray in this invention; Figure 6 This is the second schematic diagram showing the positional relationship between the nutrient solution circulation system and the planting tray in this invention; Figure 7 This is a schematic diagram of the fresh air system of the present invention connected to the shelf; Figure 8 This is a schematic diagram of the fresh air system of the present invention; Figure 9 This is an exploded view of the fresh air system of the present invention; Figure 10 This is a schematic diagram of the hidden outer shell of the soilless enclosed cultivation cabinet of the present invention; Figure 11 This is a schematic diagram of the humidifier and moisture delivery assembly in this invention; Figure 12 This is a schematic diagram of the control system entering the operation interface in this invention; Figure 13 This is a schematic diagram of the interface for selecting manual or automatic planting in the control system of this invention; Figure 14 This is a schematic diagram of the manual planting control interface selected in the control system of this invention; Figure 15 This is a schematic diagram of the parameter setting interface for the fresh air system in the control system of the present invention; Figure 16 This is a schematic diagram of the parameter setting interface for nutrient solution ion concentration in the control system of the present invention; Figure 17 This is a schematic diagram of the lighting setting parameter interface in the control system of the present invention; Figure 18 This is a schematic diagram of the humidifier parameter setting interface in the control system of the present invention; Figure 19 This is a schematic diagram of the parameter setting interface for the seedling water pump and the planting water pump in the control system of this invention; Figure 20 This is a schematic diagram of the air conditioning system parameter setting interface in the control system of the present invention; Figure 21 This is a schematic diagram of the automatic planting control interface selected in the control system of this invention; Figure 22 This is a schematic diagram of the interface for selecting the product to be planted in the control system of this invention. Detailed Implementation

[0016] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1 to 11As shown, the present invention discloses an intelligent hydroponic cultivation cabinet, comprising: a cabinet body 1 having a working chamber 101, wherein the cabinet body 1 is provided with a cabinet door 11 for opening or closing the working chamber 101; wherein the working chamber 101 is provided with a shelf 2 for placing planting trays 3; wherein the cabinet body 1 is provided with: an air conditioning system 4 for supplying cold air into the working chamber 101; a fresh air system 5 for blowing air onto the plants on the planting trays 3; a nutrient solution circulation system 6 for providing nutrient solution to the planting trays 3; a humidification system 7 for increasing the humidity in the working chamber 101; and a lamp 8 for providing light to the plants on the planting trays 3; wherein the cabinet body 1 is also provided with a control device for controlling the operation of the air conditioning system 4, the fresh air system 5, the nutrient solution circulation system 6, the humidification system 7, and the lamp 8; wherein the working chamber 101 is provided with a temperature sensor 91 for detecting the temperature in the working chamber 101 and a humidity sensor 92 for detecting the humidity in the working chamber 101, and the temperature sensor 91 and the humidity sensor 92 are electrically connected to the control device. The intelligent soilless cultivation cabinet of the present invention can adjust the working temperature in the working chamber 101 through a temperature sensor and an air conditioning system to ensure that the plant is in the most suitable growth temperature during planting. It can also adjust the working humidity in the working chamber 101 through a humidity sensor and a humidification system 7 to ensure that the plant is in the most suitable growth humidity during planting. Through the coordinated operation of the fresh air system 5, the nutrient solution circulation system 6 and the lamps 8, it can provide a suitable environment for plant growth and ensure the healthy growth of the plants.

[0018] In this embodiment, the cabinet 1 is provided with an outer shell 12, and the rear side of the working chamber 101 is provided with a rear partition 13. A cold air channel 102 is provided between the rear partition 13 and the outer shell 12. The cold air channel 102 is provided with a cold air inlet 1021 connected to the cold air output port of the air conditioning system 4. The rear partition 13 is provided with a first cold air blower 131 that corresponds one-to-one with the number of planting trays 3 and can blow towards the planting trays 3. The top of the working chamber 101 is provided with an upper partition 14. A return cavity 103 is provided between the upper partition 14 and the outer shell 12. The upper partition 14 is provided with a return hole 141 that connects the return cavity 103 and the working chamber 101. Because multiple planting trays 3 are arranged from top to bottom on the shelf 2, and the rear partition 13 is provided with a first cold air blower 131 that corresponds one-to-one with the number of planting trays 3 and can blow cold air onto the planting trays 3, each planting tray 3 can be blown by cold air, avoiding uneven temperature in the working chamber, making the planting environment of each planting tray 3 uniform, which is conducive to plant growth.

[0019] In this embodiment, the air conditioning system 4 includes a compressor 41, a condenser 42, an expansion valve 43, and an evaporator 44. The compressor 41, condenser 42, expansion valve 43, and evaporator 44 are interconnected by pipes. The evaporator 44 is located at the cold air inlet 1021. The return cavity 103 is equipped with a cold air cross-flow fan 45 for blowing the cold air generated by the evaporator 44 into the cold air duct 102. The working principle of the air conditioning system 4 is the same as that of an air conditioner. The cold air cross-flow fan 45 and the evaporator 44 are similar to the indoor unit of an air conditioner. The air conditioning system 4 is not the focus of this patent, so it will not be described in detail.

[0020] In this embodiment, the humidification system 7 includes a humidifier 71 for generating moisture and a moisture delivery assembly 72 for delivering moisture to the working chamber 101. The humidifier 71 is disposed inside the cabinet 1. The moisture delivery assembly 72 includes a main delivery pipe 721 connected to the moisture output end of the humidifier 71 and multiple auxiliary delivery pipes 722 connected to the main delivery pipe 721. The auxiliary delivery pipes 722 are provided with multiple first moisture output ports 7220 for supplying moisture. The humidified air generated by the humidifier 71 is delivered to the area of ​​the planting tray through the main delivery pipe 721 and the auxiliary delivery pipes 722, achieving precise supply of humidified air. The humidifier 71 is a commercially available product and is not the focus of this patent, therefore it will not be described in detail.

[0021] In this embodiment, the bottom of the cabinet 1 is provided with a mounting cavity 105, and a lower partition 15 is provided between the mounting cavity 105 and the working cavity 101. The humidifier 71 is disposed in the mounting cavity 105, and the main conveying pipe 721 passes through the lower partition 15. The main conveying pipe 721 and the auxiliary conveying pipe 722 are located in the cold air channel 102. The rear partition 13 is provided with a second moisture outlet 132 corresponding to the first moisture outlet 7220. By placing the main conveying pipe 721 and the auxiliary conveying pipe 722 in the cold air channel 102, the humid air can be cooled down first, preventing the humid air blown out from the auxiliary conveying pipe 722 from affecting the temperature inside the working cavity 101, thus reducing temperature fluctuations inside the working cavity and reducing energy consumption.

[0022] The nutrient solution circulation system 6 includes: a nutrient solution storage tank 61, a delivery pipe 62, a seed pump 63, and a return pipe 64. One end of the delivery pipe 62 extends into the bottom of the nutrient solution storage tank 61, and the seed pump 63 is connected in series with the delivery pipe 62. The other end of the delivery pipe 62 is connected to the inlet of the planting tray 3. One end of the return pipe 64 is connected to the outlet of the planting tray 3, and the other end of the return pipe 64 is connected to the nutrient solution storage tank 61. The nutrient solution storage tank 61 is equipped with a conductivity sensor 65 for detecting the total ion concentration of the nutrient solution. The cabinet 1 is equipped with a mother liquor bottle 66 for storing the nutrient mother liquor. The mother liquor bottle 66 is connected to a conduit 661 for transporting the nutrient mother liquor in the mother liquor bottle 66 to the nutrient solution storage tank 61. A delivery pump 662 is connected in series with the conduit 661. The seed pump 63, the conductivity sensor 65, the delivery pump 662, and the control device are electrically connected. In this embodiment, the nutrient solution in the nutrient solution storage tank 61 is transported to the planting tray 3 by the seed pump 63. When the nutrient solution content in the planting tray 3 exceeds the maximum capacity, the excess nutrient solution will overflow from the outlet of the planting tray 3 and return to the nutrient solution storage tank 61 through the return pipe 64 to achieve circulation. For the three sets of planting trays as shown in the figure above, the other end of the delivery pipe 62 is connected to the inlet of the uppermost planting tray 3, and one end of the return pipe 64 is connected to the outlet of the bottommost planting tray 3. The planting trays 3 are connected by a transition connecting pipe 67, which can realize the connection of multiple sets of planting trays.

[0023] In this embodiment, a storage chamber 104 is provided in the cabinet 1 below the working chamber 101. The nutrient solution storage tank 61 is disposed in the storage chamber 104, and the storage chamber 104 is connected to the working chamber 101. Cold air in the working chamber 101 enters the storage chamber 104 to cool the nutrient solution storage tank 61, keeping the nutrient solution at a suitable temperature for plant growth, minimizing temperature fluctuations, and reducing energy consumption.

[0024] In this embodiment, the shelf 2 includes a left shelf 21 and a right shelf 22. The fresh air system 5 is arranged vertically between the left shelf 21 and the right shelf 22. The fresh air system 5 includes a box 51 with an air supply channel 501. The box 51 is connected between the left shelf 21 and the right shelf 22. An air inlet 502 is provided on each of the left and right sides of the box 51. Each air inlet 502 is connected to a blower fan 52 for blowing air into the air supply channel 501. The planting tray 3 is placed on the upper surface of the box 51. The bottom surface of the box 51 is evenly provided with a plurality of blower mesh holes 510 for blowing air onto the plants on the planting tray 3. Each blower mesh hole 510 is connected to the air supply channel 501. The lamp 8 is arranged on the bottom surface of the box 51. The fresh air system blows air into the air supply channel 501 inside the box 51 through the cross-flow blower 52, and then blows air onto the plants on the planting tray 3 through the blower mesh 510 on the bottom surface of the box 51. This can achieve uniform airflow onto the plants and avoid affecting their growth posture. In addition, the planting tray 3 can be placed on the upper surface of the box 51, so that the box can act as a support for the planting tray 3. The fresh air system can not only achieve uniform airflow onto the plants, but also support the planting tray 3, which can reduce the overall weight and cost.

[0025] In this embodiment, to shorten the planting cycle, a seedling tray 30 is provided on the shelf 2. The cabinet 1 contains a seedling solution circulation system 301 for providing nutrient solution to the seedling tray 30. The seedling solution circulation system 301 includes: a seedling solution storage tank 3011, a delivery pipe 3012, a seedling water pump 3013, and a return pipe 3014. One end of the delivery pipe 3012 extends into the bottom of the seedling solution storage tank 3011. The seedling water pump 3013 is connected in series with the delivery pipe 3012. The other end of the delivery pipe 3012 is connected to the inlet of the seedling tray 30. One end of the return pipe 3014 is connected to the outlet of the seedling tray 30, and the other end is connected to the seedling solution storage tank 3011. The seedling solution circulation system 301 enables the circulation of seedling solution within the seedling tray.

[0026] The control method of an intelligent hydroponics cabinet according to this embodiment includes the following steps: Step 01: Power on; Step 02: Obtain the temperature t1 inside the working chamber 101 using a temperature sensor, obtain the humidity RH1 inside the working chamber 101 using a humidity sensor, and obtain the ion concentration EC1 of the nutrient solution inside the nutrient solution storage tank 61 using a conductivity sensor; Step 03: Seedling establishment period. After placing the seeds in the seedling tray for 30 minutes, turn on the lights continuously for 9-11 hours a day, and turn off the lights for the rest of the time. When the lights are on, control the temperature at 21-23℃ and when the lights are off, control the temperature at 14-16℃, control the humidity at 65-70%RH, and control the ion concentration of the nutrient solution at 600-800μS / cm. Repeat this cycle for 7-8 days to obtain seedlings. Step 04: Growth Period 1. After transplanting the seedlings into the planting trays, turn on the lights continuously for 11-13 hours a day, and turn them off for the rest of the time. When the lights are on, control the temperature at 21-23℃ and when the lights are off, control the temperature at 14-16℃, control the humidity at 60-65%RH, and control the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 03: Growth Period 2, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1400-1600μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 04: During the vigorous growth period, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1600-1800μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 05: During the pre-harvest hardening-off period, continue planting in the planting trays. Keep the lights on for 11-13 hours continuously throughout the day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 17-19℃ and when the lights are off, keep the temperature at 11-13℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days until harvest.

[0027] The present invention provides a control method for an intelligent soilless cultivation cabinet, which provides a more suitable environment for plant growth by rationally controlling the light time, temperature, humidity, ion concentration and humidity at each stage of the plant growth process, from the seedling establishment period, growth period, vigorous growth period and pre-harvest hardening period. Moreover, the operation is simpler and requires less manual intervention.

[0028] like Figure 12-22 As shown in this embodiment, a control system for an intelligent hydroponics cabinet has the following steps during operation: S01: Power on; S02: Obtain the varieties of hydroponic plants to be planted; S03: Manually input or call the database to generate a planting plan for plants, which includes the on and off times of the lamps 8, the target concentration of the nutrient solution in the nutrient solution storage tank 61, the on and off times of the fresh air system 5, the target humidity value of the air in the working chamber 101, the on and off times and target temperature of the air conditioning system 4, and the start duration and interval of the seed pump 63. S04: The system operates automatically according to the planting plan, specifically including: starting or turning off the lamps 8 according to the lamps 8's on and off times; controlling the nutrient solution circulation system 6 according to the target concentration of the nutrient solution in the nutrient solution storage tank 61; starting or turning off the fresh air system 5 according to the fresh air system 5's on and off times; starting the humidification system 7 according to the target humidity value of the air in the working chamber 101; starting the air conditioning system 4 according to the air conditioning system 4's on and off times and target temperature; and starting the water pump 63 according to the seed pump's activation duration and interval. S05: System shutdown.

[0029] The planting plan for romaine lettuce is shown in the table below:

[0030] The control system for the intelligent hydroponic cultivation cabinet of the present invention can set up planting plans according to the varieties of hydroponic plants. The system automatically adjusts the lighting, nutrient solution concentration, temperature and humidity according to the planting plan to provide a more suitable environment for plant growth. Moreover, the operation is simpler and requires less manual intervention.

Claims

1. An intelligent hydroponic cultivation cabinet, characterized in that, include: A cabinet (1) having a working chamber (101) and a cabinet door (11) for opening or closing the working chamber (101) is provided on the cabinet (101). The working chamber (101) is provided with a shelf (2) for placing planting trays (3). The cabinet (1) is characterized by having: an air conditioning system (4) for supplying cold air to the working chamber (101), a fresh air system (5) for blowing air to the plants on the planting trays (3), a nutrient solution circulation system (6) for providing nutrient solution to the planting trays (3), and a humidifier for increasing the humidity in the working chamber (101). The system (7) includes a lamp (8) for providing light to the plants on the planting tray (3). The cabinet (1) is also equipped with a control device for controlling the operation of the air conditioning system (4), the fresh air system (5), the nutrient solution circulation system (6), the humidification system (7), and the lamp (8). The working chamber (101) is equipped with a temperature sensor (91) for detecting the temperature inside the working chamber (101) and a humidity sensor (92) for detecting the humidity inside the working chamber (101). The temperature sensor (91) and the humidity sensor (92) are electrically connected to the control device.

2. The intelligent hydroponics cabinet according to claim 1, characterized in that, The cabinet (1) is provided with an outer shell (12), and the working chamber (101) is provided with a rear partition (13). A cold air channel (102) is provided between the rear partition (13) and the outer shell (12). A cold air inlet (1021) is provided on the cold air channel (102) and connected to the cold air outlet of the air conditioning system (4). A first cold air blower (131) is provided on the rear partition (13) and corresponds one-to-one with the number of planting trays (3) and can blow towards the planting trays (3). An upper partition (14) is provided on the top of the working chamber (101). A reflux chamber (103) is provided between the upper partition (14) and the outer shell (12). A reflux hole (141) is provided on the upper partition (14) and connects the reflux chamber (103) and the working chamber (101).

3. The intelligent soilless cultivation cabinet according to claim 2, characterized in that, The air conditioning system (4) includes a compressor (41), a condenser (42), an expansion valve (43), and an evaporator (44). The compressor (41), condenser (42), expansion valve (43), and evaporator (44) are interconnected by pipes. The evaporator (44) is located at the cold air inlet (1021). The return cavity (103) is equipped with a cold air cross-flow fan (45) for blowing the cold air generated by the evaporator (44) toward the cold air duct (102).

4. The intelligent hydroponics cabinet according to claim 1, characterized in that, The humidification system (7) includes a humidifier (71) for generating moisture and a moisture delivery assembly (72) for delivering moisture to the working chamber (101). The humidifier (71) is installed inside the cabinet (1). The moisture delivery assembly (72) includes a main delivery pipe (721) connected to the moisture output end of the humidifier (71) and multiple auxiliary delivery pipes (722) connected to the main delivery pipe (721). The auxiliary delivery pipes (722) are provided with multiple first moisture output ports (7220) for moisture output.

5. The intelligent soilless cultivation cabinet according to claim 1, characterized in that, The nutrient solution circulation system (6) includes: a nutrient solution storage tank (61), a delivery pipe (62), a seed pump (63), and a return pipe (64). One end of the delivery pipe (62) extends into the bottom of the nutrient solution storage tank (61). The seed pump (63) is connected in series with the delivery pipe (62). The other end of the delivery pipe (62) is connected to the inlet of the planting tray (3). One end of the return pipe (64) is connected to the outlet of the planting tray (3). The other end of the return pipe (64) is connected to the nutrient solution storage tank (61). The nutrient solution storage tank (61) is equipped with a conductivity sensor (65) for detecting the total ion concentration of the nutrient solution. The cabinet (1) is equipped with a mother liquor bottle (66) for storing the nutrient mother liquor. The mother liquor bottle (66) is connected to a conduit (661) for transporting the nutrient mother liquor in the mother liquor bottle (66) to the nutrient solution storage tank (61). A delivery pump (662) is connected in series on the conduit (661). The seed pump (63), conductivity sensor (65), delivery pump (662) and control device are electrically connected.

6. The intelligent hydroponics cabinet according to claim 5, characterized in that, The cabinet (1) is provided with a storage chamber (104) located below the working chamber (101), and the nutrient solution storage tank (61) is located in the storage chamber (104). The storage chamber (104) and the working chamber (101) are connected.

7. The intelligent soilless cultivation cabinet according to claim 1, characterized in that, The shelf (2) comprises a left shelf (21) and a right shelf (22). The fresh air system (5) is arranged vertically between the left shelf (21) and the right shelf (22). The fresh air system (5) comprises a box (51) with an air supply channel (501). The box (51) is connected between the left shelf (21) and the right shelf (22). An air inlet (502) is provided on the left and right sides of the box (51). Each air inlet (502) is connected to a blower (52) for blowing air into the air supply channel (501). The planting tray (3) is placed on the upper surface of the box (51). The bottom surface of the box (51) is evenly provided with a plurality of blower mesh holes (510) for blowing air onto the plants on the planting tray (3). Each blower mesh hole (510) is connected to the air supply channel (501). The lamp (8) is set on the bottom surface of the box (51).

8. The intelligent soilless cultivation cabinet according to claim 1, characterized in that, The shelf (2) is provided with a seedling tray (30), and the cabinet (1) is provided with a seedling liquid circulation system (301) for providing nutrient solution to the seedling tray (30). The seedling liquid circulation system (301) includes: a seedling liquid storage tank (3011), a liquid delivery pipe (3012), a seedling water pump (3013), and a liquid return pipe (3014). One end of the liquid delivery pipe (3012) extends into the bottom of the seedling liquid storage tank (3011). The seedling water pump (3013) is connected in series with the liquid delivery pipe (3012). The other end of the liquid delivery pipe (3012) is connected to the liquid inlet of the seedling tray (30). One end of the liquid return pipe (3014) is connected to the liquid outlet of the seedling tray (30), and the other end of the liquid return pipe (3014) is connected to the seedling liquid storage tank (3011).

9. A control method for an intelligent hydroponics cabinet as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 01: Power on; Step 02: Obtain the temperature t1 inside the working chamber (101) using a temperature sensor, obtain the humidity RH1 inside the working chamber (101) using a humidity sensor, and obtain the ion concentration EC1 of the nutrient solution in the nutrient solution storage tank (61) using a conductivity sensor; Step 03: During the seedling establishment period, after placing the seeds in the seedling tray (30), turn on the lights continuously for 9-11 hours in one day, and turn off the lights for the rest of the time. When turning on the lights, control the temperature at 21-23℃ and when turning off the lights, control the temperature at 14-16℃, control the humidity at 65-70%RH, and control the ion concentration of the nutrient solution at 600-800μS / cm. Repeat this cycle for 7-8 days to obtain seedlings. Step 04: Growth Period 1. After transplanting the seedlings into the planting trays, turn on the lights continuously for 11-13 hours a day, and turn them off for the rest of the time. When the lights are on, control the temperature at 21-23℃ and when the lights are off, control the temperature at 14-16℃, control the humidity at 60-65%RH, and control the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 03: Growth Period 2, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1400-1600μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 04: During the vigorous growth period, continue planting in the planting trays. Keep the lights on for 13-15 hours a day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 21-23℃ and when the lights are off, keep the temperature at 14-16℃, keep the humidity at 60-65%RH, and keep the ion concentration of the nutrient solution at 1600-1800μS / cm. Repeat this cycle for 7-8 days before proceeding to the next step. Step 05: During the pre-harvest hardening-off period, continue planting in the planting trays. Keep the lights on for 11-13 hours continuously throughout the day, and turn them off for the rest of the time. When the lights are on, keep the temperature at 17-19℃ and when the lights are off, keep the temperature at 11-13℃. Keep the humidity at 60-65%RH and the ion concentration of the nutrient solution at 1000-1200μS / cm. Repeat this cycle for 7-8 days until harvest.

10. A control system for an intelligent hydroponics cabinet as described in any one of claims 1-8, characterized in that, The control system operates with the following steps: S01: Power on; S02: Obtain the varieties of hydroponic plants to be planted; S03: Manually input or call the database to generate a planting plan for plants, wherein the planting plan includes the on and off times of the lamps (8), the target concentration of the nutrient solution in the nutrient solution storage tank (61), the on and off times of the fresh air system (5), the target humidity value of the air in the working chamber (101), the on and off times and target temperature of the air conditioning system (4), and the start duration and interval of the seed pump (63). S04: The system operates automatically according to the planting plan, specifically including: starting or stopping the lamps (8) according to the lamp-on time and lamp-off time; controlling the nutrient solution circulation system (6) according to the target concentration of the nutrient solution in the nutrient solution storage tank (61); starting or stopping the fresh air system (5) according to the opening and closing time of the fresh air system (5); starting the humidification system (7) according to the target humidity value of the air in the working chamber (101); starting the air conditioning system (4) according to the opening and closing time and target temperature of the air conditioning system (4); and starting the water pump according to the start duration and interval of the seed value water pump (63). S05: System shutdown.

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