Agricultural greenhouse cooler based on Internet of Things and cooling method

Abstract

The agricultural greenhouse cooler comprises a double-layer greenhouse, the double-layer greenhouse is divided into an inner chamber and an outer chamber, a placement table is arranged outside the outer chamber, a control unit is arranged on the placement table, the control unit is connected with the interior of the inner chamber through a pipeline, a rolled quilt is arranged between the top of the inner chamber and the outer chamber, and the rolled quilt is connected with the interior of the inner chamber through a pipeline. The inner chamber is arranged in the outer chamber, the rolled quilt covers the outer top of the inner chamber, an atomization spraying unit is arranged on the inner top of the inner chamber, a dynamic detection assembly is arranged on the inner top of the inner chamber, and an auxiliary cooling assembly is arranged between the inner chamber and the outer chamber; the atomization spraying unit and the auxiliary cooling assembly are arranged in the double-layer greenhouse, a worker transmits data to a cloud platform through cooperation of the dynamic detection assembly and the internally-arranged Internet of Things cloud box, background data control is carried out through self-developed control software, dynamic automatic adjustment is achieved through cooperation of a programmable logic controller, and the automation degree of the greenhouse is improved. And therefore, the temperature and humidity in the greenhouse can be regulated and controlled more accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of greenhouse cooling, and in particular to an agricultural greenhouse cooler and a cooling method based on Internet of Things. Background Art

[0002] Traditional greenhouse conventional management methods are gradually being replaced by modern automatic control systems. These systems provide a more stable and suitable environment for crop growth by dynamically monitoring and controlling environmental factors such as light, temperature, and humidity. However, there are still some urgent problems to be solved in the research and application of greenhouse environmental control and automatic control systems in my country.

[0003] First, there are many types of existing greenhouse control equipment, including ventilation equipment, heating equipment, irrigation systems, etc., but there is still a lack of systematic research on the effective coordination and combination of these devices; different equipment may affect each other during the control process, and the in-depth analysis of these influence relationships is currently insufficient, resulting in inefficient control of the greenhouse environment.

[0004] Secondly, the dynamic optimization problem of greenhouse environment is also neglected in academia and practice. The internal environment of the greenhouse is usually affected by multiple factors such as external climate conditions and crop growth stage, and environmental variables show dynamic changes. Existing research focuses on static control modes and lacks real-time optimization strategies for dynamic changes. This makes the greenhouse's control system insufficient to cope with environmental fluctuations and unable to effectively maintain the optimal growth environment.

[0005] To this end, an agricultural greenhouse cooler and cooling method based on the Internet of Things are proposed, which dynamically control the temperature and humidity in the greenhouse through the Internet of Things to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide an agricultural greenhouse cooler and cooling method based on the Internet of Things in response to the above-mentioned problems. The present invention sets an atomizing spray unit and an auxiliary cooling component in a double-layer greenhouse. The staff transmits data to the cloud platform through a dynamic detection component in conjunction with an internally arranged Internet of Things cloud box, and then uses self-developed control software to control the background data. In conjunction with a programmable logic controller, dynamic automatic adjustment is achieved, thereby making the temperature and humidity inside the greenhouse more accurately regulated. In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the present invention is as follows:

[0007] According to one aspect of the present invention, there is provided an agricultural greenhouse cooler based on Internet of Things, comprising a double-layer greenhouse, the double-layer greenhouse being a double-arch double-membrane structure, the double-layer greenhouse being divided into an inner room and an outer room, a placement table being provided outside the outer room, and a control unit being provided on the placement table, the control unit being connected to the inner room through a pipeline, a rolled quilt being provided between the top of the inner room and the outer room, and the rolled quilt being draped over the top of the inner room and the outer room, an atomizing spray unit being provided on the inner top of the inner room, and a dynamic detection component being provided on the inner top of the inner room, and an auxiliary cooling component being provided between the inner room and the outer room.

[0008] Preferably, the dynamic detection component includes a screw rod and a guide rod arranged at the upper end of the inner chamber, and the screw rod and the guide rod are symmetrically arranged, a driving motor is provided on one end of the screw rod, and moving blocks are provided on the screw rod and the guide rod, a rotating drum is provided between the two moving blocks, and a rotating motor is provided at one end of the rotating drum, connecting ropes are provided at both ends of the rotating drum, and the two connecting ropes extend downward, the two connecting ropes are commonly connected to two trusses, and each truss is provided with multiple sensors.

[0009] Preferably, the auxiliary cooling component includes a fan arranged on the side wall of the outer chamber close to the placing table, and the fan outlet faces outward, a wet curtain is provided on the outer wall of the inner chamber away from the placing table, a water tank is provided in the inner chamber close to the wet curtain, and the wet curtain is connected to the water tank through a water pipe, and the wet curtain forms a circulation with the water tank through the water pipe, and two ventilation holes are opened on the top of the outer chamber.

[0010] Preferably, the two trusses are arranged vertically up and down, and a counterweight bar is provided at the bottom of the lower truss.

[0011] Preferably, each of the vents is provided with a baffle, and each baffle is hinged at the vent via a spring hinge.

[0012] Preferably, the fan is provided with a plurality of dust-proof plates inclined downward.

[0013] A method for cooling an agricultural greenhouse based on the Internet of Things, comprising: an Internet of Things cloud box is provided in the double-layer greenhouse, the Internet of Things cloud box is provided with a programmable logic controller, environmental information such as air temperature, relative humidity and solar radiation is input into the cloud box, a plurality of sensors are all data-transmitted with the Internet of Things cloud box, a cloud platform is provided at the remote end, and the cloud platform is data-transmitted with the Internet of Things cloud box, and an Internet of Things system architecture is formed based on the perception layer-transmission layer-application layer;

[0014] The steps include:

[0015] S1. The on-site functional module detects the temperature at each location in the greenhouse, calculates the average value after statistics, sets the threshold, and compares the average value with the threshold;

[0016] S2, when the average value is greater than the threshold, that is, the temperature is too high, the controller adjusts the wetness of the wet curtain through the solenoid valve, and turns on the axial flow fan for negative pressure cooling;

[0017] S3. If the temperature change is too small, the controller turns on the spray pump through the solenoid valve, and the atomizing spray unit starts to spray water mist, which directly acts on the corresponding crops to achieve physical cooling.

[0018] Preferably, the double-layer greenhouse is provided with a touch screen outside, and manual control is achieved by programming the control level, that is, the dynamic detection component can be manually controlled to move the dynamic detection component to a designated position to detect the temperature at the current position.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] 1. The agricultural greenhouse cooler and cooling method based on Internet of Things described in the present invention, by setting an atomizing spray unit and an auxiliary cooling component in a double-layer greenhouse, the staff transmits data to the cloud platform through the dynamic detection component in conjunction with the internally arranged Internet of Things cloud box, and then uses the self-developed control software to perform background data control, and cooperates with the programmable logic controller to achieve dynamic automatic adjustment, thereby making the temperature and humidity inside the greenhouse more accurately regulated.

[0021] 2. The agricultural greenhouse cooler and cooling method based on Internet of Things described in the present invention, through the coordination of screw rods, rotating drums and trusses, enables multiple sensors to perform temperature and humidity detection in multiple dimensions in the interior room in the horizontal and vertical directions, and then transmits the detected data to the background cloud platform through the Internet of Things cloud box, thus achieving the purpose of dynamic detection through the Internet of Things.

[0022] 3. The agricultural greenhouse cooler and cooling method based on Internet of Things described in the present invention installs the wet curtain-fan system on the opposite side of the greenhouse, controls the start and stop of the water pump to determine the wetness of the wet curtain, and uses the negative pressure fan to draw air outward to create negative pressure in the room, forcing the outside air to flow through the porous wet surface of the wet curtain, causing water evaporation and absorbing a large amount of latent heat, thereby achieving the purpose of auxiliary cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a stereogram of the present invention;

[0024] Figure 2 The present invention Figure 1 perspective drawing;

[0025] Figure 3 It is a structural schematic diagram of the dynamic detection component of the present invention;

[0026] Figure 4 is a control program flow chart of the dynamic detection component of the present invention;

[0027] In the attached drawings, 1, double-layer greenhouse; 101, inner room; 102, outer room; 2, placing table; 3, control unit; 4, pipeline; 5, rolled quilt; 6, atomizing spray unit;

[0028] 7. Dynamic detection assembly; 701. Screw rod; 702. Guide rod; 703. Drive motor; 704. Moving block; 705. Rotating drum; 706. Rotating motor; 707. Connecting rope; 708. Truss; 709. Sensor; 710. Counterweight bar;

[0029] 8. Auxiliary cooling components; 801. Fan; 802. Wet curtain; 803. Water tank; 804. Water pipe; 805. Ventilation port; 806. Baffle;

[0030] 9. Dustproof plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the invention, and these aspects of the present invention can be realized even without these specific details.

[0032] See also Figures 1 to 3 The present invention provides an agricultural greenhouse cooler and cooling method based on IoT, and the technical solution is as follows:

[0033] The double-layer greenhouse 1 includes a double-arch double-membrane structure, and the double-layer greenhouse 1 is divided into an inner room 101 and an outer room 102. A placement table 2 is arranged outside the outer room 102, and a control unit 3 is arranged on the placement table 2. The control unit 3 is connected to the inner room 101 through a pipeline 4. A roll quilt 5 is arranged between the top of the inner room 101 and the outer room 102, and the roll quilt 5 is draped on the outer top of the inner room 101. In order to improve the thermal insulation performance of the greenhouse, a white thermal insulation quilt is covered between the double-arch structures of the greenhouse, and a motor-rolling rod is used to realize covering and uncovering regulation. action, an atomizing spray unit 6 is provided on the top of the inner chamber 101, two water pipes 4 are installed on the top of the inner chamber 101, and circular, single-outlet atomizing nozzles are installed at intervals of 0.2m. The maximum diameter of the nozzle is 1mm, and the spraying radius is 0.5-0.7m. Its head includes a water tank 803, a variable frequency water pump, a pressure sensor 709 and a solenoid valve. The pipeline pressure value can be manually set and the nozzle diameter can be adjusted to control its atomization degree. A dynamic detection component 7 is provided on the top of the inner chamber 101, and an auxiliary cooling component 8 is provided between the inner chamber 101 and the outer chamber 102.

[0034] There are many types of greenhouse control equipment, including ventilation equipment, heating equipment, irrigation systems, etc., but there is still a lack of systematic research on the effective coordination and combination of these equipment; different equipment may affect each other during the control process, and the in-depth analysis of these influence relationships is not sufficient, resulting in low efficiency in greenhouse environment control;

[0035] By setting up an atomizing spray unit 6 and an auxiliary cooling component 8 in the double-layer greenhouse 1, the staff transmits data to the cloud platform through the dynamic detection component 7 in conjunction with the internally installed Internet of Things cloud box, and then uses the self-developed control software to perform background data control, and cooperates with the programmable logic controller to achieve dynamic automatic adjustment, thereby making the temperature and humidity inside the greenhouse more accurately regulated.

[0036] There is a heating system inside the inner room 101 for regulating the indoor temperature. The heating system consists of four parts: an air source heat pump, a water storage tank 803, a hot water pipe 804 channel 4 and a water heating fan 801; the model of the air source heat pump unit is KJR-51 / BMK-A, the initial water temperature of the unit is 15°C, the end water temperature is 55°C, and the automatic heating temperature difference is ±2°C; the water storage tank 803 has a volume of about 1357L and is made of aluminum-zinc plate. It has built-in high-quality polyurethane foam insulation material with good thermal insulation performance; the hot water pipe 804 channel 4 is a PVC pipe 4, and the outside is wrapped with an insulation cotton tube to prevent temperature loss; the water heating fan 801 consists of a fin tube radiator and a fan 801. After the hot water heats the air through the fin tube radiator, the fan 801 causes the nearby hot air to flow in the greenhouse to increase the greenhouse temperature.

[0037] The dynamic detection component 7 includes a screw rod 701 and a guide rod 702 arranged at the upper end of the inner chamber 101, and the screw rod 701 and the guide rod 702 are symmetrically arranged, a driving motor 703 is provided on one end of the screw rod 701, and a moving block 704 is provided on the screw rod 701 and the guide rod 702, a rotating drum 705 is provided between the two moving blocks 704, and a rotating motor 706 is provided at one end of the rotating drum 705, connecting ropes 707 are provided at both ends of the rotating drum 705, and the two connecting ropes 707 extend downward, the two connecting ropes 707 are commonly connected to two trusses 708, and each truss 708 is provided with multiple sensors 709.

[0038] The driving motor 703 is started to drive the screw rod 701 to rotate. The rotation of the screw rod 701 causes the moving block 704 on the screw rod 701 to move back and forth. During the process, the moving block 704 on the guide rod 702 is driven to move synchronously through the rotating drum 705. During the movement of the two moving blocks 704, the rotating motor 706 is started to drive the rotating drum 705 to rotate at a slow speed, driving the connecting ropes 707 at both ends of the rotating drum 705 to reel in / relax, that is, driving the two trusses 708 to reciprocate up and down; at the same time, the two trusses 708 on the Multiple sensors 709 are started to detect the temperature and humidity at the current location, and the measured data is transmitted to the IoT cloud box through data. The IoT cloud box then transmits the data to the cloud platform and provides it to the staff for monitoring; through the cooperation of the screw rod 701, the rotating drum 705 and the truss 708, the multiple sensors 709 can perform temperature and humidity detection in multiple dimensions in the horizontal and vertical directions in the inner room 101, and then transmit the detected data to the background cloud platform through the IoT cloud box, that is, the purpose of dynamic detection is achieved through the Internet of Things.

[0039] The auxiliary cooling component 8 includes a fan 801 arranged on the side wall of the outer chamber 102 close to the placement table 2, and the outlet of the fan 801 faces outward. A wet curtain 802 is arranged on the outer wall of the inner chamber 101 away from the placement table 2. A water tank 803 is arranged on the side of the inner chamber 101 close to the wet curtain 802, and the wet curtain 802 is connected to the water tank 803 through a water pipe 804. The wet curtain 802 forms a circulation with the water tank 803 through the water pipe 804, and two ventilation holes 805 are opened on the top of the outer chamber 102.

[0040] The wet curtain 802-fan 801 system is installed on the opposite side of the greenhouse. The wet curtain 802 includes an inlet pipe 804, a return pipe 804, a water tank 803, a water pump and other auxiliary structures. The wetness of the wet curtain 802 is determined by controlling the start and stop of the water pump. The negative pressure fan 801 is used to draw air outward to create negative pressure in the room, forcing the external air to flow through the porous wet surface of the wet curtain 802, causing water evaporation and absorbing a large amount of latent heat.

[0041] The two trusses 708 are arranged vertically up and down, and a counterweight bar 710 is provided at the bottom of the lower truss 708; a counterweight bar 710 is provided at the bottom of the lower truss 708. Through appropriate design and counterweight measures, the stability of the system can be enhanced, the shaking during up and down movement can be reduced, the balance of the movement process can be ensured, the safety of the system during operation can be improved, and the risk of equipment damage and measurement errors can be reduced.

[0042] Each of the vents 805 is provided with a baffle 806, and each baffle 806 is hinged at the vent 805 by a spring hinge; the spring-hinged baffle 806 can automatically adjust the degree of opening and closing according to the external climate conditions and the indoor temperature, thereby realizing intelligent control of the ventilation volume, that is, when the fan 801 draws air outward to cause negative pressure in the room, and the wet curtain 802 is used to cause water evaporation to absorb a large amount of latent heat, the degree of opening and closing can be automatically adjusted according to the intensity of the gas flow, thereby realizing dynamic adjustment; this helps to maintain a suitable environment in the greenhouse and improve the growth efficiency of plants.

[0043] The fan 801 is provided with a plurality of downwardly inclined dust shields 9; the downwardly inclined dust shields 9 effectively block dust and debris in the air, reducing the chance of dust and debris entering the interior of the fan 801, thereby extending the service life of the fan 801; by reducing the accumulation of dust and impurities, the dust shields 9 reduce the maintenance frequency of the fan 801, thereby reducing maintenance costs and downtime.

[0044] A method for cooling an agricultural greenhouse based on the Internet of Things, comprising: an Internet of Things cloud box is provided in the double-layer greenhouse 1, and the Internet of Things cloud box is provided with a programmable logic controller, and environmental information such as air temperature, relative humidity and solar radiation are input into the cloud box, and multiple sensors 709 are all used to transmit data with the Internet of Things cloud box, and a cloud platform is provided at the remote end, and the cloud platform and the Internet of Things cloud box are used to transmit data, and an Internet of Things system architecture is formed based on the perception layer-transmission layer-application layer;

[0045] The following steps are included: S1, the on-site functional module detects the temperature of each position in the greenhouse, calculates the average value after statistics, sets the threshold, and compares the average value and the threshold;

[0046] S2, when the average value is greater than the threshold, that is, the temperature is too high, the controller adjusts the wetness of the wet curtain 802 through the solenoid valve, and turns on the axial flow fan 801 for negative pressure cooling;

[0047] S3. If the temperature change is too small, the controller turns on the spray pump through the solenoid valve, and the atomizing spray unit 6 starts to spray water mist, and the water mist directly acts on the corresponding crops to achieve physical cooling.

[0048] The double-layer greenhouse 1 is provided with a touch screen outside, and manual control is achieved by programming the control level, that is, the dynamic detection component 7 can be manually controlled to move the dynamic detection component 7 to a designated position to detect the temperature at the current position.

[0049] By writing the corresponding control program, the manual control function is realized, so that the user can flexibly monitor and adjust the environment in the greenhouse; specifically, the user can manually adjust the position of the dynamic detection component 7 through the touch screen, and this component can be moved to a specified position in the greenhouse to detect key environmental parameters such as temperature, humidity and light intensity at the current position in real time;

[0050] In addition, the manual control function is particularly important when the automatic control system fails or needs maintenance; when the user confirms that the automatic system is not working properly, he can manually adjust some equipment to ensure that the environment in the greenhouse can still maintain a state suitable for plant growth. In this way, the system not only improves the flexibility of greenhouse management, but also provides users with a reliable emergency plan, thereby minimizing crop losses caused by equipment failure.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An agricultural greenhouse cooler based on Internet of Things, characterized in that: include: A double-layer greenhouse (1), the double-layer greenhouse (1) being a double-arch double-membrane structure, the double-layer greenhouse (1) being divided into an inner room (101) and an outer room (102), a placing table (2) being arranged outside the outer room (102), a control unit (3) being arranged on the placing table (2), the control unit (3) being connected to the inside of the inner room (101) through a pipeline (4), a rolled quilt (5) being arranged between the top of the inner room (101) and the outer room (102), and the rolled quilt (5) being draped over the outer top of the inner room (101), an atomizing spray unit (6) being arranged on the inner top of the inner room (101), a dynamic detection component (7) being arranged on the inner top of the inner room (101), and an auxiliary cooling component (8) being arranged between the inner room (101) and the outer room (102).

2. The agricultural greenhouse cooler based on Internet of Things according to claim 1 is characterized by: The dynamic detection component (7) comprises a screw rod (701) and a guide rod (702) arranged at the upper end of the inner chamber (101), and the screw rod (701) and the guide rod (702) are symmetrically arranged, a driving motor (703) is arranged on one end of the screw rod (701), and a moving block (704) is arranged on the screw rod (701) and the guide rod (702), a rotating drum (705) is arranged between the two moving blocks (704), and a rotating motor (706) is arranged on one end of the rotating drum (705), connecting ropes (707) are arranged at both ends of the rotating drum (705), and the two connecting ropes (707) extend downward, and the two connecting ropes (707) are commonly connected to two trusses (708), and each truss (708) is provided with a plurality of sensors (709).

3. The agricultural greenhouse cooler based on Internet of Things according to claim 1 is characterized by: The auxiliary cooling component (8) comprises a fan (801) arranged on the side wall of the outer chamber (102) close to the placement table (2), and the outlet of the fan (801) faces outward; a wet curtain (802) is arranged on the outer wall of the inner chamber (101) away from the placement table (2); a water tank (803) is arranged in the inner chamber (101) on the side close to the wet curtain (802), and the wet curtain (802) is connected to the water tank (803) through a water pipe (804), and the wet curtain (802) forms a circulation with the water tank (803) through the water pipe (804); and two ventilation holes (805) are provided on the top of the outer chamber (102).

4. The agricultural greenhouse cooler based on Internet of Things according to claim 2 is characterized by: The two trusses (708) are arranged vertically up and down, and a counterweight bar (710) is provided at the bottom of the lower truss (708).

5. The agricultural greenhouse cooler based on Internet of Things according to claim 3 is characterized by: Each of the vents (805) is provided with a baffle (806), and each baffle (806) is hinged to the vent (805) via a spring hinge.

6. The agricultural greenhouse cooler based on Internet of Things according to claim 3 is characterized by: The fan (801) is provided with a plurality of dust-proof plates (9) inclined downward.

7. A method for cooling an agricultural greenhouse based on Internet of Things according to any one of claims 1 to 6, characterized in that: The double-layer greenhouse (1) is provided with an Internet of Things cloud box, and the Internet of Things cloud box is provided with a programmable logic controller, into which environmental information such as air temperature, relative humidity and solar radiation is input, and multiple sensors (709) are all used to transmit data with the Internet of Things cloud box, and a cloud platform is provided at the remote end, and the cloud platform and the Internet of Things cloud box are used to transmit data, so that an Internet of Things system architecture is formed based on the perception layer-transmission layer-application layer; The steps include: S1. The on-site functional module detects the temperature at each location in the greenhouse, calculates the average value after statistics, sets the threshold, and compares the average value with the threshold; S2: When the average value is greater than the threshold value, that is, the temperature is too high, the controller adjusts the wetness of the wet curtain (802) through the solenoid valve and turns on the axial flow fan (801) for negative pressure cooling; S3. If the temperature change is too small, the controller turns on the spray pump through the electromagnetic valve, and the atomizing spray unit (6) starts to spray water mist, which directly acts on the corresponding crops to achieve physical cooling.

8. The method for cooling an agricultural greenhouse based on Internet of Things according to claim 7, characterized in that: The double-layer greenhouse (1) is provided with a touch screen outside, and manual control is achieved by programming a control level, that is, the dynamic detection component (7) can be manually controlled to move the dynamic detection component (7) to a designated position to detect the temperature at the current position.

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