A phase change temperature difference cooperative driving non-powered hood control method and system

Abstract

The application relates to a phase change temperature difference cooperative driving unpowered hood control method and system, which comprises the following steps: collecting indoor and outdoor temperatures to calculate chimney effect strength and generate a hood driving instruction; secondly, the soil and air temperature difference are combined to determine the cold quantity release state of a phase change cold storage module; then, the hood damping part is adaptively adjusted according to the environmental wind speed to offset external airflow interference; the air inlet ventilation area is dynamically adjusted based on indoor humidity, and the start and stop of a micro-mist spraying device is controlled; the spraying is triggered through a temperature and humidity combined threshold value, stable convection circulation is built by matching air inlet and air outlet, and the hood air door opening degree is closed-loop adjusted by means of the expansion driving force of the phase change material according to the real-time indoor and outdoor temperature difference. By implementing the embodiment, the problems that greenhouse power ventilation cost is high, unpowered ventilation is difficult to match multiple coupled environmental parameters, temperature and humidity regulation is unbalanced, and equipment cannot be linked to accurately control temperature and humidity are solved.

Description

Technical Field

[0001] This application relates to the field of data processing technology, specifically to a method, system, electronic device, and computer-readable storage medium for a phase change temperature difference-driven non-powered windproof cap control. Background Technology

[0002] Traditional greenhouses rely on electric equipment such as fans for forced ventilation, but this brings energy costs and maintenance burdens. Purely passive ventilation cannot cope with the drastic heat fluctuations and humidity imbalances caused by solar radiation, crop transpiration, and diurnal temperature differences inside the greenhouse.

[0003] More critically, the temperature difference between the inside and outside of the greenhouse, the temperature of the soil cold storage layer, the ambient wind speed, and the humidity difference between the inside and outside are constantly changing and coupled with each other. The ventilation response triggered by a single parameter often causes the system to be over-adjusted or under-adjusted. For example, opening the ventilator only based on the temperature difference may ignore the risk of disease caused by excessive humidity, while adjusting the micro-mist spray only based on the humidity difference may cause condensation to accumulate during low-temperature periods.

[0004] How can we, without the constraint of electric power intervention, link the opening of the wind cap, the frequency of micro-mist spraying, and the area of ​​the air inlet in real time according to multiple parameter thresholds, so as to avoid frequent manual intervention and ensure that the temperature and humidity remain within the suitable range for crops during the ventilation and cooling process? Summary of the Invention

[0005] To address the issues of high costs associated with electric ventilation in greenhouses, difficulty in matching multiple coupled environmental parameters with non-powered ventilation, imbalances in temperature and humidity control, and the inability of equipment to precisely control temperature and humidity through linkage, this application aims to provide a non-powered ventilator control method, system, electronic device, and computer-readable storage medium driven by phase change temperature difference.

[0006] In a first aspect, the phase change temperature difference-driven non-powered wind cap control method described in this application includes:

[0007] At least one indoor temperature data and one outdoor temperature data are obtained from environmental monitoring equipment, and calculations are performed to obtain the target chimney effect intensity value.

[0008] The target chimney effect intensity values ​​are classified and evaluated to obtain drive component control commands;

[0009] After obtaining the control command of the drive component, the current soil temperature data and air temperature data are obtained by calculating the environmental monitoring equipment, and the cold energy release operation status is obtained.

[0010] After the cold energy release operation is started, the ambient wind speed data of the wind speed sensor at the current moment is obtained;

[0011] The ambient wind speed data is calculated to obtain the damping component drive control command;

[0012] The indoor humidity data at the current moment is obtained through a humidity sensor;

[0013] The indoor humidity data is calculated to obtain the air inlet drive control command;

[0014] The system obtains the current indoor temperature and humidity data through environmental sensors, makes a judgment, and obtains the signal to turn on the sprinkler system.

[0015] The spray activation signal is calculated to obtain convection circulation status data;

[0016] The indoor temperature data and outdoor temperature data at the current moment are processed to obtain the current temperature difference data;

[0017] The current temperature difference data is used to determine the target driving force data;

[0018] Adjust the non-powered wind cap damper using the target driving force data.

[0019] Preferably, the step of acquiring at least one indoor temperature data and outdoor temperature data from environmental monitoring equipment, performing calculations, and obtaining the target chimney effect intensity value includes:

[0020] At least one indoor temperature data and an outdoor temperature data are obtained from the environmental monitoring equipment, and the temperature difference is obtained by subtraction.

[0021] The temperature difference value is determined, and the current ambient hot air velocity data is collected;

[0022] The predicted thermal pressure difference is calculated based on the hot air velocity data and the temperature difference value.

[0023] The predicted thermal pressure difference value is calculated and processed to determine the target chimney effect intensity value;

[0024] The target chimney effect intensity values ​​are classified and evaluated to determine the target opening degree category of the windproof door;

[0025] Based on the target opening degree category of the hood door, a drive control command for adjustment is generated.

[0026] Preferably, after obtaining the control command for the drive component, the current soil temperature data and air temperature data are obtained by calculating the environmental monitoring device to obtain the cold energy release operation status, including:

[0027] Obtain the current soil temperature data and air temperature data, perform a subtraction operation, and obtain the soil-air temperature difference value;

[0028] The soil-air temperature difference value is determined, and a cold energy release trigger command is obtained;

[0029] The target amount of cold energy release is determined by parsing the cold energy release trigger command.

[0030] The target cold energy release is matched and calculated with preset reference air layer data to obtain the predicted air density difference value;

[0031] The predicted air density difference value is used to determine the temperature control element adjustment level.

[0032] Based on the temperature control element adjustment level, a corresponding cold storage valve control signal is generated and the cold energy release operation is initiated.

[0033] Preferably, after initiating the cooling capacity release operation, the ambient wind speed data at the current moment is acquired from the wind speed sensor; the ambient wind speed data is calculated to obtain the damping element drive control command, including:

[0034] The current ambient wind speed data is obtained from the wind speed sensor, and a judgment is made to obtain the damping trigger signal;

[0035] Based on the damping trigger signal, the current airflow direction data inside the unpowered wind cap is collected;

[0036] The current airflow direction data is compared with the preset chimney effect reference airflow direction data to obtain the airflow offset angle value;

[0037] The airflow offset angle value is compared to determine the corresponding damping adjustment level;

[0038] Based on the damping adjustment level, a preset damping position matching table is consulted to determine the target damping displacement.

[0039] The target damping displacement is obtained, and the corresponding damping element drive control command is generated.

[0040] Preferably, the step of acquiring indoor humidity data at the current moment through a humidity sensor; calculating the indoor humidity data to obtain an air inlet drive control command includes:

[0041] The indoor humidity data at the current moment is obtained from the humidity sensor, a judgment is made, and a dehumidification trigger signal is obtained.

[0042] Based on the dehumidification trigger signal, the current operating status data of the micro-mist spray device is obtained, and a judgment is made to obtain the spray shut-off command;

[0043] The spray shut-off command controls the micro-mist spray device to stop operating, while simultaneously acquiring the current temperature and wind direction data inside the greenhouse;

[0044] The current temperature data and the current wind direction data are classified and processed to obtain the target ventilation volume;

[0045] For the target ventilation volume, consult the preset ventilation area matching table to determine the target area value of the air inlet;

[0046] Obtain the target area value and generate the corresponding air inlet drive control command.

[0047] Preferably, the step of acquiring current indoor temperature and humidity data through environmental sensors, determining the appropriate activation signal for the sprinkler system, and calculating the convection circulation status data based on the sprinkler activation signal includes:

[0048] The system obtains the current indoor temperature and humidity data from the environmental sensors, makes a determination, and obtains the sprinkler activation signal.

[0049] Based on the spray activation signal, the current water pressure data and current evaporation rate data of the micro-mist spray device are obtained and classified to obtain the target spray volume;

[0050] For the target spray volume, a corresponding spray valve driving command is generated, and the current temperature difference data inside the greenhouse is obtained at the same time;

[0051] Obtain the current temperature difference data to determine the target exhaust volume of the non-powered ventilator;

[0052] The target exhaust volume is calculated by combining the target exhaust volume with the current open area data to obtain the target make-up air volume;

[0053] Obtain the target make-up air volume and generate the corresponding air inlet control command;

[0054] By adjusting the air inlet to the position corresponding to the target make-up air volume through the air inlet control command, the convection circulation status data is obtained.

[0055] Preferably, the steps of acquiring current temperature difference data; determining the current temperature difference data to acquire target driving force data; and adjusting the non-powered wind cap damper using the target driving force data include:

[0056] Obtain the current indoor temperature data and the current outdoor temperature data, process them, and obtain the current temperature difference data;

[0057] The current temperature difference data is acquired and used to determine the appropriate action, and a damper closing trigger signal is generated.

[0058] Based on the damper closing trigger signal, the current phase change material temperature data and current expansion volume data of the phase change drive component are obtained, and the current phase change material temperature data and current expansion volume data are classified and processed to obtain the target driving force data.

[0059] The target driving force data and the current opening angle data are used to calculate the target closure data;

[0060] Obtain the target closure data and generate the corresponding damper control command;

[0061] The damper of the non-powered vent cap is adjusted by the damper control command.

[0062] Secondly, the phase change temperature difference-driven non-powered windproof cap control system described in this application includes:

[0063] The data extraction module acquires at least one indoor temperature data and outdoor temperature data from environmental monitoring equipment, performs calculations to obtain the target chimney effect intensity value, classifies and evaluates the target chimney effect intensity value, and obtains drive component control commands.

[0064] The cooling capacity status module, after obtaining the control command of the drive component, calculates the current soil temperature data and air temperature data obtained by the environmental monitoring device to obtain the cooling capacity release operation status.

[0065] After the drive control module starts the cooling release operation, it acquires the ambient wind speed data of the wind speed sensor at the current moment, calculates the ambient wind speed data, and obtains the damping component drive control command.

[0066] The humidity control module acquires the current indoor humidity data through a humidity sensor, calculates the indoor humidity data, and obtains the air inlet drive control command.

[0067] The sprinkler control module acquires the current indoor temperature and humidity data through environmental sensors, makes a judgment, obtains the sprinkler activation signal, calculates the sprinkler activation signal, and obtains the convection circulation status data.

[0068] The operation adjustment module acquires and processes the current indoor temperature data and outdoor temperature data to obtain the current temperature difference data, determines the current temperature difference data, obtains the target driving force data, and adjusts the non-powered wind cap damper based on the target driving force data.

[0069] Thirdly, this application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the phase change temperature difference coordinated driving non-powered wind cap control method as described in the first aspect.

[0070] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the phase change temperature difference-coordinated driven powerless wind cap control method as described in the first aspect.

[0071] This embodiment abandons the traditional electric drive mode and uses the phase change cold storage soil layer and the indoor-outdoor temperature difference as the core driving source. By collecting multiple parameters such as indoor-outdoor temperature difference, soil-air temperature difference, ambient wind speed, and indoor-outdoor humidity difference, setting thresholds for each parameter and establishing linkage control logic, it adaptively adjusts the opening of the non-powered ventilator, the start and stop of the micro-mist spray, and the effective ventilation area of ​​the air inlet. Combined with the latent heat regulation of the phase change cold storage module and the anti-interference design of the ventilator damping structure, it realizes non-powered, precise, and closed-loop control of greenhouse ventilation and cooling. At the same time, it utilizes the convection circulation of micro-mist spray and air intake and exhaust to optimize the thermal and humidity environment inside the greenhouse and improve the overall ventilation and cooling efficiency. Attached Figure Description

[0072] Figure 1 This is a flowchart of a non-powered wind cap control method driven by phase change temperature difference as described in this application;

[0073] Figure 2 This is a schematic diagram of the structural composition of a phase change temperature difference-driven non-powered wind cap control system as described in this application;

[0074] Figure 3 This is a framework diagram of the terminal device provided in the embodiments of this application. Detailed Implementation

[0075] Example 1

[0076] like Figure 1 As shown, the phase change temperature difference-driven non-powered wind cap control method described in this application includes:

[0077] S101. Obtain at least one indoor temperature data and one outdoor temperature data from environmental monitoring equipment, perform calculations, and obtain the target chimney effect intensity value.

[0078] Classify and evaluate the target chimney effect intensity values ​​to obtain drive component control commands;

[0079] S102. After obtaining the control command of the drive component, the current soil temperature data and air temperature data are obtained through the calculation environmental monitoring equipment to obtain the cold energy release operation status.

[0080] S103. After starting the cold energy release operation, obtain the ambient wind speed data of the wind speed sensor at the current moment;

[0081] Calculate the ambient wind speed data to obtain the damping component drive control command;

[0082] S104. Obtain the current indoor humidity data through the humidity sensor;

[0083] Calculate indoor humidity data and obtain air inlet drive control commands;

[0084] S105. Obtain the current indoor temperature and humidity data through environmental sensors, make a judgment, and obtain the sprinkler activation signal.

[0085] Calculate the spray activation signal to obtain convection circulation status data;

[0086] S106. Obtain the current indoor temperature data and outdoor temperature data, process them, and obtain the current temperature difference data;

[0087] The current temperature difference data is used to determine the target driving force data;

[0088] Adjust the non-powered wind cap damper using target driving force data.

[0089] Furthermore, S101 includes:

[0090] Obtain at least one indoor temperature data point and one outdoor temperature data point from environmental monitoring equipment, and obtain the temperature difference value by subtraction.

[0091] Determine the temperature difference value and collect the current ambient hot air velocity data;

[0092] The predicted thermal pressure difference is calculated based on the hot air velocity data and temperature difference values.

[0093] The predicted thermal pressure difference values ​​are calculated and processed to determine the target chimney effect intensity value;

[0094] Classify and evaluate the target chimney effect intensity values ​​to determine the target opening degree category of the windproof door;

[0095] Based on the target opening degree category of the hood door, generate drive control commands for adjustment.

[0096] In a specific embodiment, at least one indoor temperature data and an outdoor temperature data are obtained from an environmental monitoring device, and the temperature difference is obtained by subtraction.

[0097] When the temperature difference exceeds a preset threshold value, the sensor is triggered to collect the current ambient hot air velocity data.

[0098] Based on the hot air velocity data and temperature difference values, the support vector machine regression algorithm is used to calculate and obtain the predicted thermal pressure difference value.

[0099] The predicted thermal pressure difference is calculated using pre-established fluid dynamics equations to determine the target chimney effect intensity.

[0100] The target chimney effect intensity value is obtained, and the random forest algorithm is used for classification and evaluation to determine the corresponding windproof door target opening category.

[0101] Based on the target opening degree category of the ventilator door, a drive control command is generated for adjustment, and the corresponding ventilation flow operation state is started through the drive control command.

[0102] Specifically, in S101, the system collects indoor and outdoor temperatures in real time at a sampling frequency of 1 second by deploying a platinum resistance temperature sensor array at a height of 2 meters on the central axis of the greenhouse and an outdoor weather station node. The data is transmitted to the central processing unit, which uses the optimal linear estimation filtering algorithm to remove abnormal fluctuation values ​​and calculates the real-time temperature difference. When the moving average temperature difference value for three consecutive minutes is greater than the preset threshold of 5°C, the control system determines that the triggering condition is met and sends a micro-current activation command to the temperature difference sensing drive unit.

[0103] The command outputs a pulse width modulation signal with a duty cycle of 60% based on the proportional-integral-derivative control algorithm. This precisely heats the positive temperature coefficient thermistor heating element wrapped around the phase change drive component, causing the internal paraffin-based phase change material to absorb approximately 120.5 joules of heat within two minutes and undergo a solid-liquid phase change. The thrust generated by its volume expansion is converted into linear displacement through a mechanical transmission rod. The system's built-in magnetic displacement sensor monitors the push rod stroke in real time. When the push rod reaches 15 mm, the mechanical latch of the non-powered wind cap is unlocked, and the damper blades are rotated to the maximum opening of 45 degrees.

[0104] At this point, based on the ideal gas law and the principle of energy conservation in fluid mechanics, the system substitutes the greenhouse height of 4 meters and the current air density difference between inside and outside to calculate that the thermal pressure difference between inside and outside is about 2.5 Pascals. This pressure difference drives the cold air at the bottom to replenish and the hot air at the top to overflow, forming a chimney effect updraft with a flow rate of about 1.2 meters per second, which accelerates the discharge of the high temperature and high humidity air gathered at the top to the outside through the vent cap.

[0105] The central control platform simultaneously sets the ventilation status flag to number one, records the current temperature and humidity gradient data and writes it into the distributed database. At the same time, it automatically blocks the high-energy-consuming negative pressure fan start-up logic through association rule algorithm, so that the greenhouse completely enters the passive ventilation process that relies on natural thermodynamic circulation.

[0106] Specifically, in S101, in the indoor-outdoor temperature difference filtering calculation formula:

[0107]

[0108] Where, ΔT avg The sliding average temperature difference between indoors and outdoors; T in,i T represents the indoor temperature during the i-th sampling. out,i The outdoor temperature is measured at the i-th sampling point; N is the total number of sampling points in the 3-minute sliding window (sampling frequency 1Hz, (N=180)); trigger condition: ΔT avg >ΔT1,ΔT1=5℃;

[0109] In the formula for thermal pressure difference due to the chimney effect:

[0110]

[0111] Where ΔP is the indoor-outdoor thermal pressure difference (chimney-driven pressure difference), unit: Pa; g is the acceleration due to gravity, taken as 9.81 m / s². 2 H represents the effective ventilation height of the greenhouse; ρ out This refers to the density of cold air outdoors.

[0112] ρ in Indoor hot air density;

[0113] In the conversion of air density to ideal gas density:

[0114]

[0115] Where P0 is standard atmospheric pressure, 101325 Pa; M is the molar mass of air, 0.029 kg / mol;

[0116] R is the universal gas constant; T is the ambient temperature in Celsius.

[0117] In the formula for the updraft velocity in the chimney effect:

[0118]

[0119] Where v is the upward airflow velocity inside the ventilator; ξ is the friction coefficient of the ventilator + greenhouse ventilation, which is taken as 1.8 in this embodiment; ρ avg The average density of indoor and outdoor air;

[0120] In the work done by the expansion of phase change materials (paraffin phase change driven thrust):

[0121]

[0122] Among them, Q phase1For heat absorption during the phase transition of paraffin, the numerical value Q in the example is... phase1 =120.5J; m1 is the mass of phase change paraffin; L1 is the latent heat of fusion of paraffin, in J / kg.

[0123] Furthermore, S102 includes:

[0124] Obtain the current soil temperature data and air temperature data, perform a subtraction operation, and obtain the soil-air temperature difference value;

[0125] Determine the temperature difference between the soil and the air, and obtain the cold energy release trigger command;

[0126] The target amount of cold energy release is determined by analyzing the cold energy release trigger command.

[0127] The target cold energy release is matched with the preset reference air layer data to obtain the predicted air density difference value;

[0128] Determine the temperature control element adjustment level based on the predicted air density difference value;

[0129] Based on the temperature control element's adjustment level, a corresponding control signal for the cold storage valve is generated, and the cold energy release operation is initiated.

[0130] In a specific embodiment, after the corresponding ventilation flow operation state is started, the soil temperature data and air temperature data at the current moment are obtained from the environmental monitoring node, and the soil temperature data and air temperature data are subtracted to obtain the soil-air temperature difference value.

[0131] If the temperature difference between the soil and the air exceeds the preset second temperature difference threshold, a cold energy release trigger command will be generated for the phase change cold storage block.

[0132] Based on the cold energy release trigger command, the current phase change state data of the phase change cold storage block is collected, and the current phase change state data is analyzed in combination with the preset thermodynamic rules to determine the target cold energy release amount;

[0133] The target cold energy release is obtained, and the decision tree algorithm is used to match and calculate the target cold energy release with the preset reference air layer data to obtain the predicted air density difference value.

[0134] For the predicted air density difference value, compare it with the preset density difference standard range to determine the corresponding temperature control element adjustment level;

[0135] Based on the temperature control element's adjustment level, a corresponding cold storage valve control signal is generated, and the phase change cold storage module's cold energy release operation is initiated through the cold storage valve control signal.

[0136] Specifically, in S102, the system uses a time-domain reflectometer composite temperature probe buried 500 mm below the ground surface and an infrared thermopile sensor suspended 1000 mm above the canopy to simultaneously acquire soil and air temperature data with a sampling period of 2 seconds. The dual-source data stream is pushed to the edge computing node, and the dynamic temperature difference is calculated after the Kalman filter algorithm is used to eliminate environmental noise interference.

[0137] When the temperature difference between the soil and the air exceeds the preset threshold of 8.5℃ within a continuous five-minute sliding time window, the main control logic determines that the trigger condition is met and sends a digital drive command to the phase change cold storage temperature control unit.

[0138] The command outputs a voltage signal based on a fuzzy logic control algorithm, which starts the brushless DC circulating pump to run at a speed of 1200 revolutions per minute. The ethylene glycol refrigerant in the drive circuit enters the cold storage module containing sodium sulfate decahydrate phase change material at a flow rate of 0.5 liters per second.

[0139] After sensing heat exchange, the phase change material undergoes a liquid-solid phase change crystallization process at 18.5℃, releasing approximately 350 kJ of latent cooling within four minutes. The cooling energy is then transferred to the bottom air via forced convection through a high thermal conductivity aluminum finned tube heat exchanger.

[0140] The system calculates in real time based on the ideal gas law and finds that the local cooling causes the air density at the bottom layer to increase from 1.18 kg / m³ to 1.21 kg / m³, and a density difference of 0.03 kg / m³ is formed between the high-density cold air at the bottom layer and the low-density hot air in the middle and upper layers.

[0141] The control system then inputs the three-dimensional density gradient matrix parameters into the built-in computational fluid dynamics simulation model, and dynamically outputs control commands based on the flow field distribution prediction results to precisely adjust the unfolding ratio of the top shading net to 75%.

[0142] Specifically, in S102, the soil-air sliding mean temperature difference (after Kalman filtering):

[0143]

[0144] Triggering conditions:

[0145]

[0146] Among them, T soil Temperature of the soil 500mm below ground; T air M represents the air temperature in the crop canopy; M is the number of sampling points in a 5-minute sliding window (sampling at 2Hz, (M=600)).

[0147] In the formula for the latent heat of thermal release in a phase change cold storage module:

[0148]

[0149] Among them, Q cold Example Q represents the total cooling capacity released during the phase transition of sodium sulfate decahydrate. cold =350kJ; m2 is the mass of phase change salt in the cold storage module; L2 is the latent heat of solidification of sodium sulfate decahydrate;

[0150] In the formula for heat exchange in a refrigerant cycle:

[0151]

[0152] Where Φ is the instantaneous heat transfer power of the heat exchanger; c gly The specific heat capacity at constant pressure of ethylene glycol as a refrigerant; ΔT is the mass flow rate of the refrigerant. heat-ex This refers to the temperature difference between the refrigerant entering and exiting the cold storage module;

[0153] In the conversion of volumetric flow rate to mass flow rate:

[0154]

[0155] In the formula for calculating the air density difference at the bottom layer:

[0156]

[0157] Where Δρ is the density difference between the cold air at the bottom layer and the hot air at the top layer. Example: Δρ = 0.03 kg / m³ 3 ;ρ cold-air ρ is the density of the low-temperature air at the bottom layer after cold storage and heat exchange; hot-air This represents the density of the uncooled air in the upper part of the greenhouse.

[0158] Furthermore, S103 includes:

[0159] The system acquires the current ambient wind speed data from the wind speed sensor, makes a judgment, and obtains the damping trigger signal.

[0160] Based on the damping trigger signal, collect the current airflow direction data inside the unpowered wind cap;

[0161] The current airflow direction data is compared with the preset chimney effect reference airflow direction data to obtain the airflow offset angle value;

[0162] Compare the airflow deviation angle values ​​to determine the corresponding damping adjustment level;

[0163] Based on the damping adjustment level, consult the preset damping position matching table to determine the target damping displacement.

[0164] Obtain the target damping displacement and generate the corresponding damping component drive control command.

[0165] In a specific embodiment, after the cold energy release operation is started, the ambient wind speed data at the current moment is obtained from the wind speed sensor. If the ambient wind speed data is greater than the preset wind speed threshold, a damping trigger signal is generated.

[0166] Based on the damping trigger signal, collect the current airflow direction data inside the unpowered wind cap;

[0167] The current airflow direction data is acquired, and the support vector machine algorithm is used to classify and compare the current airflow direction data with the preset chimney effect reference airflow direction data to obtain the airflow offset angle value.

[0168] For the airflow deflection angle value, compare it with the preset deflection tolerance range to determine the corresponding damping adjustment level;

[0169] Based on the damping adjustment level, consult the preset damping position matching table to determine the target damping displacement.

[0170] Obtain the target damping displacement and generate the corresponding damping component drive control command;

[0171] By using control commands driven by the damping components, the damping structure inside the unpowered wind cap is adjusted to reach the physical position corresponding to the target damping displacement.

[0172] Specifically, in S103, the system uses a three-dimensional ultrasonic anemometer deployed on the top of the facility to collect external flow field data in real time at a sampling frequency of 10 Hz, and transmits the wind speed vector sequence to the central processor. The fast Fourier transform algorithm is used to extract frequency domain features to filter out high-frequency turbulence disturbances.

[0173] When the calculation module determines that the moving average wind speed exceeds the preset threshold of 8.5 meters per second for 15 consecutive seconds, the main control unit immediately generates a pulse width modulation signal and sends it to the servo driver at the wind cap base.

[0174] The driver controls a two-phase hybrid stepper motor to operate with a resolution of 1.8 degrees per step. Through a mechanical linkage mechanism, the tilt angle of the titanium alloy louver damping plate inside the unpowered wind cap is precisely adjusted from the initial 0 degrees to 45.5 degrees.

[0175] The change in the angle of the damper simultaneously reduces the effective aerodynamic cross-sectional area of ​​the wind cap throat. The built-in fluid dynamics solver calculates the dynamic pressure attenuation caused by the cross-sectional contraction in real time based on Bernoulli's equation.

[0176] The micro differential pressure sensor installed on the neck of the wind cap synchronously transmits the internal static pressure data with a 5-millisecond delay. The control logic finely adjusts the damping plate angle based on the differential pressure feedback closed loop, so that the internal static pressure of the wind cap is strictly locked at -12.5 Pascals. The hot air inside the facility relies on the vertical upward airflow formed by the initial thermal pressure difference to maintain a flow rate of 1.2 meters per second through the wind cap exhaust port.

[0177] Specifically, in S103, the moving average wind speed filtering formula (FFT filtering turbulence) is as follows:

[0178]

[0179] Triggering conditions:

[0180]

[0181] in: V is the 15-second moving average of the external wind speed. k The instantaneous wind speed sample value is the kth time; K is the number of sampling points in a 15s window (sampling at 10Hz, (K=150)).

[0182] In the dynamic pressure at the throat of the vent cap (Bernoulli's equation):

[0183]

[0184] Among them, P dyn The external wind exerts dynamic pressure on the wind cap opening; V is the instantaneous external ambient wind speed; ρ air Outdoor air density;

[0185] In the static pressure balance type inside the wind cap after damping adjustment:

[0186]

[0187] Where, Δ Pchimney The original chimney thermal pressure difference; ΔP damp To dampen the pressure loss caused by the contraction of the louvers; P cap-in To stabilize the target static pressure (P) inside the wind cap cap-in =-12.5Pa);

[0188] In the empirical formula for damping pressure loss:

[0189]

[0190] in, v is the damping coefficient of the louver, and θ is a function of the louver tilt angle θ; θ is the adjustment tilt angle of the damping louver; cap The airflow velocity inside the windproof cap.

[0191] Furthermore, S104 includes:

[0192] The system obtains the current indoor humidity data from the humidity sensor, makes a judgment, and obtains a dehumidification trigger signal.

[0193] Based on the dehumidification trigger signal, the current operating status data of the micro-mist spray device is obtained, and a judgment is made to obtain the spray shut-off command;

[0194] The micro-mist spraying device is stopped by the spray shut-off command, and the current temperature and wind direction data inside the greenhouse are acquired at the same time.

[0195] The current temperature data and current wind direction data are classified and processed to obtain the target ventilation volume;

[0196] For the target ventilation volume, consult the preset ventilation area matching table to determine the target area value of the air inlet;

[0197] Obtain the target area value and generate the corresponding air inlet drive control command.

[0198] In a specific embodiment, after adjusting the damping structure inside the non-powered hood to reach the physical position corresponding to the target damping displacement, the indoor humidity data at the current moment is obtained from the humidity sensor. If the indoor humidity data is greater than the preset humidity threshold, a dehumidification trigger signal is generated.

[0199] Based on the dehumidification trigger signal, the current operating status data of the micro-mist spray device is obtained. If the current operating status data is in the on state, a spray shut-off command is generated.

[0200] The micro-mist spraying device is stopped by the spray shut-off command, and the current temperature and wind direction data inside the greenhouse are acquired at the same time.

[0201] Obtain current temperature and wind direction data, and use a decision tree algorithm to classify and process the current temperature and wind direction data to obtain the target ventilation volume;

[0202] For the target ventilation volume, consult the preset ventilation area matching table to determine the target area value of the air inlet;

[0203] Obtain the target area value and generate the corresponding air inlet drive control command;

[0204] By using the air inlet drive control command, the physical opening degree of the air inlet is adjusted to reach the position corresponding to the target area value.

[0205] Specifically, in S104, a capacitive polymer humidity sensor array deployed at the height of the greenhouse crop canopy collects spatial relative humidity data in real time at a sampling frequency of 5 Hz and transmits the digital signal to the central processor, using a Kalman filter algorithm to remove abnormal spikes caused by water droplet adhesion.

[0206] When the logic operation module determines that the weighted average humidity value exceeds the preset threshold of 85 for 20 consecutive seconds, the main control chip immediately sends a zero-hertz operation command to the high-pressure water pump frequency converter, and at the same time outputs a 24-volt reverse pulse signal to the direct-acting solenoid valve at the end of the pipeline, cutting off the water supply within 200 milliseconds. The pipeline pressure relief valve opens simultaneously to reduce the residual water pressure in the pipeline to below 100 kPa.

[0207] The system then invokes the three-dimensional thermodynamic model of the greenhouse, calculates the required theoretical air exchange rate based on the current indoor and outdoor absolute humidity difference, and sends a position control command to the DC brushless motor of the side window film rolling device;

[0208] The motor drives the drive shaft at a speed of 150 revolutions per minute, increasing the physical opening of the side window roll-up film from the initial 20% to 75%.

[0209] An ultrasonic flow meter installed in the window monitors the air intake in real time. The control unit uses a proportional-integral-derivative algorithm to compare the deviation between the actual ventilation volume and the target air exchange rate, and dynamically fine-tunes the travel limit of the film rolling motor to strictly lock the dry air inflow at 3,500 cubic meters per hour per unit time.

[0210] Specifically, in S104, the indoor weighted average relative humidity (Kalman filter) is:

[0211]

[0212] Triggering conditions:

[0213]

[0214] in, The indoor relative humidity is a 20-second weighted average; H i The sampled value of the i-th humidity sensor; w i The corresponding sensor spatial weights (crop canopy has a higher weight);

[0215] In the theoretical air exchange rate of a greenhouse (the ventilation required for dehumidification):

[0216]

[0217] Among them, Q air The target Q in the example is the dry air volumetric flow rate required per unit time. air =3500m 3 / h;W evap The total transpiration rate of the crop; w in Indoor air humidity; w out This refers to the outdoor air humidity content.

[0218] In the relationship between air inlet ventilation area and ventilation volume:

[0219]

[0220] Among them, A in The effective ventilation area of ​​the air inlet; v in 3600 represents the airflow velocity at the air inlet; 3600 is the conversion factor from seconds to hours.

[0221] In the pressure relief balance formula for the spray pipeline:

[0222]

[0223] Depressurization target after shutting off the sprinkler system: .

[0224] Furthermore, S105 includes:

[0225] The system obtains the current indoor temperature and humidity data from environmental sensors, makes a judgment, and obtains the sprinkler activation signal.

[0226] Based on the spray activation signal, the current water pressure data and current evaporation rate data of the micro-mist spray device are acquired and classified to obtain the target spray volume.

[0227] For the target spray volume, generate the corresponding spray valve drive command, and at the same time obtain the current temperature difference data inside the greenhouse;

[0228] Obtain the current temperature difference data to determine the target exhaust volume of the non-powered ventilator;

[0229] The target exhaust volume is calculated by combining the target exhaust volume with the current open area data to obtain the target makeup air volume;

[0230] Obtain the target air supply volume and generate the corresponding air inlet control command;

[0231] By adjusting the air inlet to the position corresponding to the target make-up air volume using the air inlet control command, the convection circulation status data is obtained.

[0232] In a specific embodiment, after adjusting the physical opening degree of the air inlet to the position corresponding to the target area value, the indoor temperature data and indoor humidity data at the current moment are obtained from the environmental sensor. If the indoor temperature data is greater than the preset temperature threshold and the indoor humidity data is less than the preset humidity threshold, a spray start signal is generated.

[0233] Based on the spray activation signal, the current water pressure data and current evaporation rate data of the micro-mist spray device are obtained. The support vector machine algorithm is used to classify and process the current water pressure data and current evaporation rate data to obtain the target spray volume.

[0234] For the target spray volume, a corresponding spray valve drive command is generated. The opening degree of the spray valve is adjusted to reach the position corresponding to the target spray volume through the spray valve drive command. At the same time, the current temperature difference data inside the greenhouse is obtained.

[0235] Obtain the current temperature difference data, query the preset exhaust matching table, and determine the target exhaust volume of the non-powered ventilator;

[0236] For the target exhaust volume, the current open area data of the air inlet is obtained, and a linear regression algorithm is used to calculate the target exhaust volume and the current open area data to obtain the target make-up air volume;

[0237] Obtain the target make-up air volume, generate the corresponding air inlet control command, adjust the air inlet to the position corresponding to the target make-up air volume through the air inlet control command, and obtain the convection circulation status data.

[0238] Specifically, in S105, a platinum resistance temperature probe and an alumina ceramic humidity probe suspended in the middle of the greenhouse synchronously collect environmental data at a frequency of 10 Hz. The central processing unit uses a sliding time window algorithm to smooth the signal for 30 consecutive seconds.

[0239] When the logic judgment module detects that the weighted average temperature has risen above 32°C and the relative humidity has fallen below 45%, the system immediately calls the built-in air enthalpy-humidity diagram calculation matrix to calculate the amount of water required per cubic meter of latent heat of vaporization to cool the current dry and hot air to the target state.

[0240] The main control unit then sends a high-frequency pulse width modulation signal to the plunger-type pressurization pump, which steadily increases the pipeline operating pressure to seven MPa within three seconds, driving the specially made ruby ​​nozzle to release an extremely fine water mist with a particle size of fifteen micrometers at a flow rate of forty liters per hour.

[0241] To accelerate water mist evaporation and build an efficient heat exchange channel, the control system synchronously activates the computational fluid dynamics convection model. Based on the thermal pressure gradient generated by the indoor and outdoor temperature difference, it sends pulse commands to the stepper motor of the bottom louvered air inlet to precisely lock its opening angle at forty-five degrees.

[0242] Meanwhile, the electric guide vanes on the top non-powered hood base are adjusted to the maximum windward section. The fuzzy logic controller dynamically coordinates the air resistance coefficients of the air inlet and exhaust channel based on the airflow data of 0.8 meters per second fed back by the indoor micro-anemometer. This forces the external cold air to rush in from the bottom and carry the humid and hot air that has absorbed heat and vaporized to be quickly discharged from the top hood, creating a stable vertical convection field that circulates six times per hour inside the greenhouse.

[0243] Specifically, in S105, temperature and humidity are jointly triggered for determination:

[0244]

[0245] Among them, T avg The indoor temperature is the 30-second moving average. This represents the average humidity for the same period.

[0246] In terms of the water consumption required for evaporative cooling (air enthalpy-humidity balance):

[0247]

[0248] in, Q represents the water consumption per unit time for spraying; vol h is the volume of air in the greenhouse. hot The initial enthalpy of high-temperature dry air; h target To achieve the target air enthalpy for cooling; L v The latent heat of vaporization of water at room temperature is 2450 kJ / kg; Example: 12g of water needs to be vaporized per cubic meter of air;

[0249] In the formula for high-pressure spray flow rate:

[0250]

[0251] in, C is the spray volumetric flow rate; d A is the flow coefficient of the ruby ​​nozzle; nozzle P represents the flow cross-sectional area of ​​a single nozzle. spray The working pressure of the sprinkler network; ρ water The density of liquid water is 1000 kg / m³. 3 Example P spray =7MPa, =40L / h;

[0252] In the greenhouse hourly air exchange rate:

[0253]

[0254] Where n is the number of air exchanges per hour; Q air,total V represents the total ventilation volume per hour. green The total internal volume of the greenhouse; steady-state convection in the example: n = 6 times / h.

[0255] Furthermore, S106 includes:

[0256] Obtain the current indoor and outdoor temperature data, process them, and obtain the current temperature difference data;

[0257] The system acquires the current temperature difference data, makes a judgment, and generates a damper closing trigger signal.

[0258] Based on the damper closing trigger signal, the current phase change material temperature data and current expansion volume data of the phase change drive component are obtained, and the current phase change material temperature data and current expansion volume data are classified and processed to obtain the target driving force data.

[0259] The target closure data is obtained by calculating the target driving force data and the current opening angle data;

[0260] Acquire target closure data and generate corresponding damper control commands;

[0261] Adjust the non-powered wind cap damper using damper control commands.

[0262] In a specific embodiment, after adjusting the air inlet to the position corresponding to the target make-up air volume through the air inlet control command and obtaining the convection circulation status data, the indoor temperature data and outdoor temperature data at the current moment are obtained, and the indoor temperature data and outdoor temperature data are processed by the differential calculation method to obtain the current temperature difference data.

[0263] Obtain the current temperature difference data. If the current temperature difference data is less than the preset temperature difference threshold, generate a damper closing trigger signal.

[0264] Based on the damper closing trigger signal, the current phase change material temperature data and current expansion volume data of the phase change drive component are obtained. The random forest algorithm is used to classify the current phase change material temperature data and current expansion volume data to obtain the target driving force data.

[0265] For the target driving force data, the current opening angle data of the non-powered wind cap damper is obtained, and the decision tree algorithm is used to calculate the target closure data by combining the target driving force data and the current opening angle data.

[0266] Acquire target closure data, generate corresponding damper control commands, and adjust the non-powered wind cap damper to the position corresponding to the target closure data through the damper control commands to obtain damper closure status data;

[0267] Based on the damper closure status data, the current heat loss rate inside the greenhouse is obtained. If the current heat loss rate is greater than the preset loss threshold, a secondary sealing execution signal is generated to obtain the blocking status data.

[0268] Specifically, in S106, a negative temperature coefficient thermistor array deployed on the weather mast outside the greenhouse synchronously acquires the dual-end temperature sequence with a K-type thermocouple network at the height of the indoor canopy at a sampling rate of 50 Hz.

[0269] The central control unit introduces a Kalman filter algorithm to remove noise and align the baseline of the acquired dual signals, and calculates the indoor and outdoor temperature gradient difference in real time.

[0270] When the comparator built into the microcontroller determines that the temperature gradient difference within 120 consecutive sampling periods has contracted to a preset threshold of less than 3.5℃, the system triggers a latch-up procedure.

[0271] The computing core then calls the nonlinear mapping function to calculate the required compensation heat power based on the current temperature drop slope, and sends a digital control signal with a duty cycle of 75% to the top unpowered wind cap control node;

[0272] The signal drives the solid-state relay to turn on, injecting 24 volts of DC current into the polymer positive temperature coefficient heating film surrounding the phase change drive cylinder;

[0273] As the heating film output reaches 45 watts, the paraffin-based phase change material encapsulated inside the cylinder expands in volume within 90 seconds, crossing the solid-liquid critical point of 62.5°C, generating a linear thrust of 200 Newtons. This pushes the mechanical linkage to displace at a rate of 2 millimeters per second until the Hall sensor detects a limit stroke signal of 15 millimeters. Based on this, the main control chip cuts off the heating current and triggers the electromagnetic self-locking mechanism, completing the physical closing action of the wind cap guide vanes.

[0274] Specifically, in S106, the indoor-outdoor temperature difference closed-loop determination is as follows:

[0275]

[0276] Disable trigger conditions:

[0277]

[0278] In the formula for the input heat power of the heating film:

[0279]

[0280] Among them, P heat U is the output power of the phase change heating film; U is the power supply voltage of the heating film, 24V; I is the circuit operating current; Example: P heat =45W;

[0281] In the formula for the work done by the thrust of paraffin phase change expansion:

[0282]

[0283] Among them, W push F represents the mechanical work of the phase change thrust; F represents the linear thrust generated by the phase change expansion; s represents the effective displacement stroke of the push rod; Example: F = 200 N, s = 0.015 m;

[0284] In the rate of heat loss through ventilation at the top of the greenhouse:

[0285]

[0286] Where, Φ loss The greenhouse heat loss power is denoted by K when the ventilator is open; K is the overall heat transfer coefficient of the ventilator ventilation; A cap Area of ​​the ventilation opening in the vent cap; Secondary sealing trigger condition: (Heat loss threshold).

[0287] Example 2

[0288] like Figure 2 As shown, a phase change temperature difference-driven non-powered wind cap control system includes:

[0289] Data extraction module 1 acquires at least one indoor temperature data and outdoor temperature data from environmental monitoring equipment, performs calculations to obtain the target chimney effect intensity value, classifies and evaluates the target chimney effect intensity value, and obtains drive component control commands.

[0290] After receiving the control command from the drive unit, the cooling capacity status module 2 obtains the current soil temperature and air temperature data through the calculation environmental monitoring equipment to obtain the cooling capacity release operation status.

[0291] After starting the cooling capacity release operation, the drive control module 3 acquires the ambient wind speed data of the wind speed sensor at the current moment, calculates the ambient wind speed data, and obtains the damping component drive control command.

[0292] Humidity control module 4 acquires the current indoor humidity data through a humidity sensor, calculates the indoor humidity data, and obtains the air inlet drive control command.

[0293] The sprinkler control module 5 obtains the current indoor temperature and humidity data through environmental sensors, makes a judgment, obtains the sprinkler start signal, calculates the sprinkler start signal, and obtains the convection circulation status data.

[0294] The operation adjustment module 6 obtains and processes the current indoor and outdoor temperature data, obtains the current temperature difference data, determines the current temperature difference data, obtains the target driving force data, and adjusts the non-powered wind cap damper based on the target driving force data.

[0295] Example 3

[0296] like Figure 3 As shown, this embodiment provides a device 30, which includes a processor 300 and a memory 301;

[0297] Memory 301 is used to store program code 302 and transfer program code 302 to the processor;

[0298] The processor 300 is used to execute the steps in the above-described phase change temperature difference-driven non-powered wind cap control method according to the instructions in the program code 302.

[0299] For example, computer program 302 may be divided into one or more modules / units; one or more modules / units are stored in memory 301 and executed by processor 300 to complete this application; one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of computer program 302 in terminal device 30.

[0300] Terminal device 30 may be a computing device such as a desktop computer, laptop, handheld computer, or cloud server; terminal device may include, but is not limited to, processor 300 and memory 301.

[0301] Those skilled in the art will understand that Figure 3 This is merely an example of terminal device 30 and does not constitute a limitation on terminal device 30. It may include more or fewer components than shown, or combine certain components, or different components. For example, terminal device may also include input / output devices, network access devices, buses, etc.

[0302] The processor 300 can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0303] The memory 301 can be an internal storage unit of the terminal device 30, such as a hard disk or memory of the terminal device 30; the memory 301 can also be an external storage device of the terminal device 30, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on the terminal device 30.

[0304] Furthermore, the memory 301 may include both internal storage units and external storage devices of the terminal device 30; the memory 301 is used to store computer programs and other programs and data required by the terminal device, and the memory 301 may also be used to temporarily store data that has been output or will be output.

[0305] Example 4

[0306] This embodiment provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements all the steps of the phase change temperature difference-driven non-powered wind cap control method as described in Embodiment 1. The computer-readable storage medium includes, but is not limited to, ROM, RAM, disk, optical disk, USB flash drive, solid-state drive, and cloud storage media. The program can be loaded into any electronic device to run. For those skilled in the art, various other corresponding changes and modifications can be made based on the above-described technical solutions and concepts, and all such changes and modifications should fall within the protection scope of the claims of this application.

Claims

1. A method for controlling a non-powered windproof cap driven by phase change temperature difference, characterized in that, include: At least one indoor temperature data and one outdoor temperature data are obtained from environmental monitoring equipment, and calculations are performed to obtain the target chimney effect intensity value. The target chimney effect intensity values ​​are classified and evaluated to obtain drive component control commands; After obtaining the control command of the drive component, the current soil temperature data and air temperature data are obtained by calculating the environmental monitoring equipment, and the cold energy release operation status is obtained. After the cold energy release operation is started, the ambient wind speed data of the wind speed sensor at the current moment is obtained; The ambient wind speed data is calculated to obtain the damping component drive control command; The indoor humidity data at the current moment is obtained through a humidity sensor; The indoor humidity data is calculated to obtain the air inlet drive control command; The system obtains the current indoor temperature and humidity data through environmental sensors, makes a judgment, and obtains the signal to turn on the sprinkler system. The spray activation signal is calculated to obtain convection circulation status data; The indoor temperature data and outdoor temperature data at the current moment are processed to obtain the current temperature difference data; The current temperature difference data is used to determine the target driving force data; Adjust the non-powered wind cap damper using the target driving force data.

2. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, The step of acquiring at least one indoor temperature data point and one outdoor temperature data point from environmental monitoring equipment, performing calculations, and obtaining a target chimney effect intensity value includes: At least one indoor temperature data and an outdoor temperature data are obtained from the environmental monitoring equipment, and the temperature difference is obtained by subtraction. The temperature difference value is determined, and the current ambient hot air velocity data is collected; The predicted thermal pressure difference is calculated based on the hot air velocity data and the temperature difference value. The predicted thermal pressure difference value is calculated and processed to determine the target chimney effect intensity value; The target chimney effect intensity values ​​are classified and evaluated to determine the target opening degree category of the windproof door; Based on the target opening degree category of the hood door, a drive control command for adjustment is generated.

3. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, After obtaining the control command for the drive component, the system calculates the current soil temperature and air temperature data obtained by the environmental monitoring device to obtain the cold energy release operation status, including: Obtain the current soil temperature data and air temperature data, perform a subtraction operation, and obtain the soil-air temperature difference value; The soil-air temperature difference value is determined, and a cold energy release trigger command is obtained; The target amount of cold energy release is determined by parsing the cold energy release trigger command. The target cold energy release is matched and calculated with preset reference air layer data to obtain the predicted air density difference value; The predicted air density difference value is used to determine the temperature control element adjustment level. Based on the temperature control element adjustment level, a corresponding cold storage valve control signal is generated and the cold energy release operation is initiated.

4. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, The step of calculating the environmental wind speed data and obtaining the damping component drive control command includes: The current ambient wind speed data is obtained from the wind speed sensor, and a judgment is made to obtain the damping trigger signal; Based on the damping trigger signal, the current airflow direction data inside the unpowered wind cap is collected; The current airflow direction data is compared with the preset chimney effect reference airflow direction data to obtain the airflow offset angle value; The airflow offset angle value is compared to determine the corresponding damping adjustment level; Based on the damping adjustment level, a preset damping position matching table is consulted to determine the target damping displacement. The target damping displacement is obtained, and the corresponding damping element drive control command is generated.

5. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, The calculation of the indoor humidity data to obtain the air inlet drive control command includes: The indoor humidity data at the current moment is obtained from the humidity sensor, a judgment is made, and a dehumidification trigger signal is obtained. Based on the dehumidification trigger signal, the current operating status data of the micro-mist spray device is obtained, and a judgment is made to obtain the spray shut-off command; The spray shut-off command controls the micro-mist spray device to stop operating, while simultaneously acquiring the current temperature and wind direction data inside the greenhouse; The current temperature data and the current wind direction data are classified and processed to obtain the target ventilation volume; For the target ventilation volume, consult the preset ventilation area matching table to determine the target area value of the air inlet; Obtain the target area value and generate the corresponding air inlet drive control command.

6. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, The calculation of the spray activation signal to obtain convection circulation status data includes: The system obtains the current indoor temperature and humidity data from the environmental sensors, makes a determination, and obtains the sprinkler activation signal. Based on the spray activation signal, the current water pressure data and current evaporation rate data of the micro-mist spray device are obtained and classified to obtain the target spray volume; For the target spray volume, a corresponding spray valve driving command is generated, and the current temperature difference data inside the greenhouse is obtained at the same time; Obtain the current temperature difference data to determine the target exhaust volume of the non-powered ventilator; The target exhaust volume is calculated by combining the target exhaust volume with the current open area data to obtain the target make-up air volume; Obtain the target make-up air volume and generate the corresponding air inlet control command; By adjusting the air inlet to the position corresponding to the target make-up air volume through the air inlet control command, the convection circulation status data is obtained.

7. The non-powered wind cap control method based on phase change temperature difference synergistic drive according to claim 1, characterized in that, The adjustment of the non-powered windshield damper using the target driving force data includes: Obtain the current indoor temperature data and the current outdoor temperature data, process them, and obtain the current temperature difference data; The current temperature difference data is acquired and used to determine the appropriate action, and a damper closing trigger signal is generated. Based on the damper closing trigger signal, the current phase change material temperature data and current expansion volume data of the phase change drive component are obtained, and the current phase change material temperature data and current expansion volume data are classified and processed to obtain the target driving force data. The target driving force data and the current opening angle data are used to calculate the target closure data; Obtain the target closure data and generate the corresponding damper control command; The damper of the non-powered vent cap is adjusted by the damper control command.

8. A non-powered windproof hood control system driven by phase change temperature difference, characterized in that, include: The data extraction module acquires at least one indoor temperature data and outdoor temperature data from environmental monitoring equipment, performs calculations to obtain the target chimney effect intensity value, classifies and evaluates the target chimney effect intensity value, and obtains drive component control commands. The cooling capacity status module, after obtaining the control command of the drive component, calculates the current soil temperature data and air temperature data obtained by the environmental monitoring device to obtain the cooling capacity release operation status. After the drive control module starts the cooling release operation, it acquires the ambient wind speed data of the wind speed sensor at the current moment, calculates the ambient wind speed data, and obtains the damping component drive control command. The humidity control module acquires the current indoor humidity data through a humidity sensor, calculates the indoor humidity data, and obtains the air inlet drive control command. The sprinkler control module acquires the current indoor temperature and humidity data through environmental sensors, makes a judgment, obtains the sprinkler activation signal, calculates the sprinkler activation signal, and obtains the convection circulation status data. The operation adjustment module acquires and processes the current indoor temperature data and outdoor temperature data to obtain the current temperature difference data, determines the current temperature difference data, obtains the target driving force data, and adjusts the non-powered wind cap damper based on the target driving force data.

9. An electronic device, characterized in that, The system includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor causes the processor to perform the steps of the phase change temperature difference-driven non-powered wind cap control method as described in any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the powerless wind cap control method of phase change temperature difference coordinated drive as described in any one of claims 1 to 7.

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