Multifunctional eggplant waking cabinet and control method thereof

Abstract

The invention discloses a multifunctional solanum wake-up cabinet and a control method thereof.The solanum wake-up cabinet comprises a humidity system, a refrigerating system, a PTC heating system, an air duct circulating system and MCU intelligent control and starting equipment, the MCU intelligent control reads temperature and humidity set values, the MCU collects current temperature and humidity data in a box through a high-precision temperature and humidity probe, and the temperature and humidity data are stored in the box; storing in a temporary cache of the system; the system judges that a refrigeration module, a heating module, a humidification module or a dehumidification module needs to be started according to the deviation between the collected initial temperature and humidity and a set value; according to the temperature in the box, the MCU controls the refrigeration sheet and the PTC heating system to work; a humidity threshold in the box is set, and the MCU controls the semiconductor chilling plate and the fan to work according to the humidity in the box; the MCU collects temperature and humidity data in the box at regular time, and a PID algorithm is adopted for dynamic adjustment to keep the stability of system operation. By introducing a PID control algorithm, temperature and humidity can be accurately regulated and controlled, automatic regulation and coordination work can be realized through an intelligent control module, and energy loss is reduced. And the operation process is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of cigar cabinets, in particular to a multifunctional cigar awakening cabinet and a control method thereof. Background Art

[0002] As the global economy recovers sluggishly, the pressure to fulfill tobacco control obligations increases, and new tobacco products rise rapidly, global cigarette sales continue to decline, but at the same time, cigars still maintain a steady development trend and increase year by year. At the same time, in order to meet the needs of various cigar lovers, various cigar storage products (constant temperature and humidity cigar cabinets, moisturizing cigar cabinets, etc.) have sprung up, which solves the problem of cigar storage for cigar lovers. At present, cigars stored for a long time are actually moist and not suitable for immediate tasting. It is necessary to moderately heat and dehumidify the cigars within a certain period of time to enhance the aroma of the cigars and make them reach a humidity suitable for tasting. Therefore, in the storage process of cigars, there is also a problem of waking up. When the user opens the waking up area, if he forgets to take out the cigar, and the waking up area program exits, and the temperature and humidity are no longer controlled, the relatively sealed waking up area may have too high temperature and humidity, which will lead to poor waking up of the cigar.

[0003] At present, since the multifunctional eggplant aging cabinet involves multiple control systems (refrigeration, heating, humidification, dehumidification, etc.), there is insufficient coordinated control between different systems, resulting in excessive fluctuations in temperature and humidity, affecting the effect of constant temperature and humidity. The switching between the refrigeration and heating systems is not smooth enough, resulting in temperature fluctuations, especially in extreme environments (such as when the outside temperature is higher or lower than the set value). Humidity control depends on the humidification system and the dehumidification system. The response speed of these two systems is different, resulting in delayed humidity adjustment or excessive dehumidification / humidification. The humidification system relies on the water in the water tank to increase the humidity, but if the water level sensor cannot monitor the water level in a timely and accurate manner, it will cause water shortage or excessive water replenishment, affecting the humidification effect. The water level sensor is not accurate enough to identify subtle water level changes, resulting in discontinuous operation of the humidification system. Sensor failure or failure will cause the humidification system to fail to operate normally, thereby affecting the overall humidity control. The air circulation inside the eggplant aging cabinet needs to be distributed through multiple air ducts, and the air flow rate in different areas may be different, resulting in uneven temperature and humidity distribution. Especially when switching between different modes such as cold air, hot air, and humidified air, airflow is prone to dead corners. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above and / or existing problems in the existing multifunctional eggplant awakening cabinet and control method thereof, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to provide a multifunctional tomato waking cabinet and a control method thereof.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An embodiment of the present invention provides a multifunctional tomato aging cabinet, which includes a humidity system, a refrigeration system, a PTC heating system, an air duct circulation system and an MCU intelligent control.

[0009] As a preferred solution of the multifunctional eggplant waking cabinet described in the present invention, the humidity system includes a water storage tank, a humidification air duct and a dehumidification system, the refrigeration system includes a semiconductor refrigeration plate, a heat pipe heat dissipation, a cooling aluminum and a fan, the PTC heating system includes a PTC heater and a fan, the air duct circulation system includes space air circulation, cold air circulation, hot air circulation and humidification and dehumidification circulation, and the MCU intelligent control includes humidity control, temperature control and air duct control.

[0010] As a preferred solution of the multifunctional eggplant aging cabinet described in the present invention, the water tank is designed to be detachable for easy cleaning and water replenishment, the water tank has a built-in water level sensor to monitor the water level in real time, and the humidification air duct uses a nano sprayer to improve the humidification efficiency.

[0011] As a preferred solution of the multifunctional eggplant waking cabinet described in the present invention, the sensor is an electrode-type water level sensor, and multiple electrodes of different heights are installed in the water tank to monitor different water levels. When the water level drops to the lowest electrode, the circuit is disconnected, and the sensor sends a water shortage signal to the MCU to stop the humidification system; when the water level rises to the high electrode, the circuit is closed, and the sensor sends a water tank full signal.

[0012] As a preferred solution of the multifunctional eggplant waking cabinet described in the present invention, the semiconductor refrigeration plate controls the cooling capacity through pulse modulation, isolates the heat dissipation area and the cooling area of ​​the heat pipe to avoid heat backflow, and the cooling aluminum uses high thermal conductivity aluminum material to be in close contact with the refrigeration plate to increase the heat exchange area.

[0013] As a preferred solution of the multifunctional eggplant aging cabinet of the present invention, the PTC heater works synchronously with the fan to keep the hot air evenly distributed, and a two-way adjustment mode is adopted to reduce local overheating.

[0014] As a preferred solution of the multifunctional eggplant awakening cabinet described in the present invention, the cold air circulation, hot air circulation, humidification air duct circulation and dehumidification air duct circulation are switched into different modes by adjusting valves, a plurality of valves are integrated in the air duct system, each valve corresponds to a different air circulation mode, the valve is controlled by an electric valve or a servo valve, and its opening or closing state is controlled by MCU, and an angle sensor is installed at each valve position to monitor the opening angle of the valve in real time.

[0015] As a preferred solution of the multifunctional eggplant aging cabinet described in the present invention, the MCU collects temperature and humidity data of the upper and lower layers in the space respectively through two high-precision temperature and humidity probes, and the temperature control adopts a closed-loop feedback mechanism to adjust the working status of the refrigeration plate and the PTC heater in real time to ensure that the temperature is constant at 20°C. The humidity control uses an adaptive algorithm to dynamically adjust the humidification or dehumidification mode according to the difference between the current humidity and the set humidity, and the built-in PID control algorithm is used to adjust the fan speed.

[0016] As a preferred solution of the preparation method of the multifunctional eggplant awakening cabinet of the present invention, the PID control algorithm includes the following steps: initializing the parameter proportional coefficient Kp, integral coefficient Ki and differential coefficient Kd of the PID controller; according to the temperature and humidity collected in real time, the MCU calculates the difference between the current value and the set target value to obtain the error e(t): e(t) = set value - measured value; if the temperature or humidity deviates from the target value, the error will be used to adjust the fan speed.

[0017] The embodiment of the present invention provides a multifunctional tomato waking cabinet control method, which includes: starting a device, an MCU intelligently controlling and reading temperature and humidity setting values, the MCU collecting current temperature and humidity data in the box through a high-precision temperature and humidity probe, and storing the data in a temporary cache of the system; the system determines whether to start a refrigeration, heating, humidification or dehumidification module according to the deviation between the collected initial temperature and humidity and the set value; the MCU controls the operation of a refrigeration plate and a PTC heating system according to the temperature in the box; a humidity threshold in the box is set, and the MCU controls the operation of a semiconductor refrigeration plate and a fan according to the humidity in the box; the MCU regularly collects temperature and humidity data in the box, and uses a PID algorithm for dynamic adjustment to prevent drastic fluctuations in temperature and humidity and maintain the stability of system operation.

[0018] The beneficial effects of the present invention are as follows: by introducing the PID control algorithm, the temperature and humidity can be precisely controlled to reduce system fluctuations, ensuring that the temperature in the eggplant aging cabinet is always maintained at 20°C and the humidity is stabilized between 45% and 60%. The intelligent control module (MCU) can be used to achieve automatic adjustment and coordination to reduce energy loss. Real-time monitoring and safety are improved, and the air flow in different modes is precisely controlled through the adjustable air duct valve design. Using the MCU intelligent control system, users can set the temperature and humidity target values ​​through a simple interface, and the system will automatically adjust various parameters to simplify the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 The present invention is a flow chart of a control method of a multifunctional eggplant awakening cabinet.

[0021] Figure 2 This is a structural diagram of a multifunctional eggplant awakening cabinet. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] Example 1

[0027] Reference Figure 1-2 , which is an embodiment of the present invention.

[0028] A multifunctional tomato awakening cabinet control method:

[0029] S1: According to the temperature inside the box, MCU controls the operation of the cooling plate and PTC heating system.

[0030] When the temperature inside the box is higher than 20℃, the MCU starts the refrigeration system, the semiconductor refrigeration chip starts working to cool the air inside the box, and the heat pipe cooling system and the cooling aluminum start working to assist in heat dissipation. The fan starts to ensure that the cold air circulates through the air duct to the entire box. When the temperature approaches 20℃, the MCU gradually reduces the power output of the refrigeration chip and uses pulse modulation (PWM) control to prevent overcooling. When the temperature drops to 20℃, the refrigeration chip stops working.

[0031] When the temperature inside the box is lower than 20℃, the MCU stops the refrigeration chip and starts the PTC heating system. The PTC heater starts working and the fan runs synchronously. The hot air circulates to the entire box through the air duct. When the temperature approaches 20℃, the MCU reduces the power output of the heater and gradually reduces the heating intensity to prevent overheating. When the temperature rises to 20℃, the PTC heater stops working.

[0032] When the temperature inside the box is equal to 20℃, the refrigeration plate and PTC heater remain in the off state, the air duct circulation system maintains a low-power standby state, and only monitors temperature changes.

[0033] S2: Set the humidity threshold in the box, and MCU controls the operation of the semiconductor cooling chip and fan according to the humidity in the box.

[0034] Set the humidity threshold to 50%. When the humidity in the box is higher than 50%, the MCU starts the dehumidification system, the semiconductor refrigeration chip starts working, condenses the moisture in the air, and discharges the moisture through the condensation water collection device after dehumidification. The fan starts to ensure that the air circulates in the condensation area to improve the dehumidification effect. When the humidity is close to 50%, the refrigeration chip gradually reduces the working power to prevent excessive dehumidification. When the humidity drops to 50%, the dehumidification system stops working.

[0035] When the humidity in the box is lower than 50%, the MCU starts the humidification system, the fan on the top of the water tank starts, the air circulates through the humidification air duct, generates moisture through the water surface, and increases the humidity in the box. The nano sprayer further improves the humidification efficiency to ensure that the moisture is evenly distributed. When the humidity approaches the set value, the humidification fan gradually reduces the speed and reduces the humidification intensity. When the humidity rises to 50%, the humidification system stops working.

[0036] When the humidity in the box is equal to 50%, both the dehumidification system and the humidification system remain closed, the air duct circulation system maintains low power consumption operation, and continuously monitors humidity changes.

[0037] S3: The air duct circulation system automatically selects the operating mode according to the current temperature and humidity conditions.

[0038] Cold air circulation: When the refrigeration unit is working, the air duct circulation system starts the cold air circulation to ensure even distribution of cold air.

[0039] Hot air circulation: When the PTC heater is working, the air duct circulation system starts the hot air circulation to ensure that the hot air is evenly distributed.

[0040] Humidification cycle: When the humidity is below 50%, the humidification air duct starts and the water tank fan transports moisture to the entire interior of the box.

[0041] Dehumidification cycle: When the humidity is higher than 50%, the dehumidification air duct starts, and dry air circulates through the dehumidification area to reduce the humidity in the box.

[0042] S4: MCU regularly collects temperature and humidity data in the box, and uses PID algorithm for dynamic adjustment to prevent drastic fluctuations in temperature and humidity and maintain the stability of system operation.

[0043] A temperature sensor and a humidity sensor are installed inside the tomato waking cabinet. The temperature and humidity data in the cabinet are collected regularly through the MCU (microcontroller unit). The MCU sets the collection cycle, which is usually performed every 5 seconds to ensure that the system can obtain the latest environmental data in real time. The collected data includes the current actual temperature value and the actual humidity value, and are compared with the target values ​​set by the system (the temperature is set at 20°C and the humidity is set between 45% and 60%).

[0044] The collected temperature and humidity data are input into the PID control algorithm. First, the current actual temperature value (T_actual) and actual humidity value (H_actual) are obtained from the temperature and humidity sensor. The system also has a set target temperature value (T_set) and target humidity value (H_set).

[0045] Set temperature target: T_set = 20°C

[0046] Actual temperature: T_actual (collected from the sensor in real time)

[0047] Set humidity target: H_set = 50%

[0048] Actual humidity: H_actual (collected from the sensor in real time)

[0049] Recalculate the error:

[0050] PID control first needs to calculate the error, which is the difference between the actual value and the target value. There are two errors here, one is temperature error and the other is humidity error.

[0051] Temperature error:

[0052] eT=Tset-Tactual

[0053] Humidity error:

[0054] eH=Hset-Hactual

[0055] Then the proportional (P) control calculation is performed. The proportional control directly adjusts the output control amount according to the current error size. The calculation formula is:

[0056] Proportional part of temperature control:

[0057] PT=Kp·eT

[0058] Proportional part of humidity control:

[0059] PH = Kp·eH

[0060] Where Kp is the proportional gain coefficient, which determines the sensitivity to error. e_T and e_H are the current temperature and humidity errors.

[0061] Re-integral (I) control calculation Integral control takes into account the cumulative effect of errors and is used to eliminate long-term deviations. By accumulating past errors, integral control can avoid situations where the system cannot reach the set value for a long time.

[0062] Integral part of temperature control:

[0063]

[0064] Integral part of humidity control:

[0065]

[0066] Where K_i is the integral gain coefficient, I_T^{prev} and I_H^{prev} are the integration results of the previous moment, and Δt is the sampling time interval.

[0067] Derivative (D) control calculation:

[0068] The differential part of temperature control:

[0069]

[0070] Differential part of humidity control:

[0071]

[0072] Among them, K_d is the differential gain coefficient, e_T^{prev} and e_H^{prev} are the temperature and humidity errors at the previous moment respectively.

[0073] Combining the proportional, integral and differential parts, we get the final control quantity, which determines how the system adjusts the working state of the cooling, heating, humidification, dehumidification and other equipment.

[0074] Temperature control quantity (output to cooling plate or heater):

[0075] OutputT=PT+IT+DT

[0076] Humidity control amount (output to dehumidification or humidification system):

[0077] OutputH=PH+IH+DH

[0078] Based on the calculated Output_T and Output_H, the MCU decides whether to start or adjust the following devices:

[0079] If the Output_T value is greater than 0, the heater starts and the refrigeration unit stops working; if it is less than 0, the refrigeration unit starts and the heater stops working; if the Output_H value is greater than 0, the humidification system starts; if it is less than 0, the dehumidification system starts.

[0080] Furthermore, the target temperature setting value Tset = 20°C

[0081] Current temperature Tcurrent=23℃

[0082] PID parameter settings:

[0083] Proportional coefficient KP = 2

[0084] Integration coefficient KI = 0.1

[0085] Differential coefficient KD = 1

[0086] Time step Δt = 1 second (sampling period is 1 second)

[0087] Initial error accumulation ∑e (the initial value of the integral term is 0)

[0088] The last error eprev = 0 (the initial value of the differential term is 0)

[0089] Step 1: Calculate the current error

[0090] The current error eT is the difference between the current temperature and the set temperature: eT = Tset - Tcurrent = 20°C - 23°C = -3°C, which means that the current temperature is 3°C higher than the set value and needs to be cooled.

[0091] Step 2: Proportional term calculation (P)

[0092] The proportional term Pout is calculated based on the error and the proportional coefficient: Pout = KP·eT = 2·(-3) = -6. The proportional term output is -6, indicating that the system needs to lower the temperature.

[0093] Step 3: Integral Term Calculation (I)

[0094] The integral term Iout is used to correct long-term errors and accumulate the errors at each time step: ∑e = ∑e + eT·Δt = 0 + (-3)·1 = -3

[0095] Current integral output:

[0096] Iout=KI·∑e=0.1·(-3)=-0.3, the integral output is -0.3, indicating that the temperature needs to be further reduced.

[0097] Step 4: Calculation of differential term (D)

[0098] The differential term Dou reflects the rate of error change: deT / dt = eT-eprev = (-3)-0 = -3

[0099] Current differential output:

[0100] Dout=KD·deT / dt=1·(-3)=-3, the differential output is -3, indicating that the error is increasing rapidly, so a quick response is required to reduce the temperature.

[0101] Step 5: Calculate the total output

[0102] The final control output is the sum of the three items: Output = Pout + Iout + Dout = -6 + (-0.3) + (-3) = -9.3. This output value will be used to adjust the power of the refrigeration equipment. For example, the MCU will adjust the current of the cooling plate according to the output value to increase the cooling effect.

[0103] Furthermore, the target humidity setting value Hset=50%,

[0104] Current humidity Hcurrent=40%(humidification required)

[0105] PID parameter settings:

[0106] Proportional coefficient KP = 1.5

[0107] Integration coefficient KI = 0.05

[0108] Differential coefficient KD = 0.8

[0109] Time step Δt = 1 second (sampling period is 1 second)

[0110] Initial error accumulation ∑eH=0 (initial value of integral term is 0)

[0111] The last error eprev = 0 (the initial value of the differential term is 0)

[0112] Step 1: Calculate the current error

[0113] The current humidity error eH is the difference between the current humidity and the set humidity: eH = Hset - Hcurrent = 50% - 40% = 10%, which means that the current humidity is 10% lower than the set value and humidification is required.

[0114] Step 2: Proportional term calculation (P)

[0115] The proportional term Pout is calculated based on the error and the proportional coefficient: Pout = KP·eH = 1.5·10 = 15. The proportional term output is 15, indicating that the system needs to significantly increase the humidification amount.

[0116] Step 3: Integral Term Calculation (I)

[0117] The integral term Iout is used to correct the long-term error. The error accumulated at each time step is: ∑eH = ∑eH + eH·Δt = 0 + 10·1 = 10.

[0118] Current integral output:

[0119] Iout=KI·∑eH=0.05·10=0.5, the integral output is 0.5, indicating that humidification is required to correct the continuous deviation.

[0120] Step 4: Calculation of differential term (D)

[0121] The differential term Dout reflects the rate of error change: deHdt = eH-eprev = 10-0 = 10, and the current differential output is:

[0122] Dout=KD·deHdt=0.8·10=8, the differential output is 8, which means the humidity error changes rapidly and the system needs to respond in time to prevent over-adjustment.

[0123] Step 5: Calculate the total output

[0124] Output = Pout + Iout + Dout = 15 + 0.5 + 8 = 23.5. This output value will be used to control the power or fan speed of the humidifier. A larger output value indicates that stronger humidification is required.

[0125] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multifunctional tomato awakening cabinet, characterized in that: include: Humidity system, refrigeration system, PTC heating system, air duct circulation system and MCU intelligent control.

2. The multifunctional tomato waking cabinet as claimed in claim 1, characterized in that: The humidity system includes a water storage tank, a humidification air duct and a dehumidification system, the refrigeration system includes a semiconductor refrigeration plate, heat pipe heat dissipation, cooling aluminum and a fan, the PTC heating system includes a PTC heater and a fan, the air duct circulation system includes space air circulation, cold air circulation, hot air circulation and humidification and dehumidification circulation, and the MCU intelligent control includes humidity control, temperature control and air duct control.

3. The multifunctional tomato waking cabinet as claimed in claim 2, characterized in that: The water tank is designed to be detachable for easy cleaning and water replenishment. The water tank has a built-in water level sensor to monitor the water level in real time, and the humidification air duct uses a nano sprayer to improve the humidification efficiency.

4. The multifunctional tomato waking cabinet as claimed in claim 3, characterized in that: The sensor is an electrode-type water level sensor. Multiple electrodes of different heights are installed in the water tank to monitor different water levels. When the water level drops to the lowest electrode, the circuit is disconnected, and the sensor sends a water shortage signal to the MCU to stop the humidification system; when the water level rises to the high electrode, the circuit is closed, and the sensor sends a water tank full signal.

5. The multifunctional tomato waking cabinet as claimed in claim 2, characterized in that: The semiconductor refrigeration plate controls the cooling capacity through pulse modulation, isolates the heat dissipation area and the cooling area of ​​the heat pipe to avoid heat backflow, and the cooling aluminum uses high thermal conductivity aluminum material to closely contact the refrigeration plate to increase the heat exchange area.

6. The multifunctional tomato waking cabinet as claimed in claim 2, characterized in that: The PTC heater works synchronously with the fan to keep the hot air evenly distributed, while adopting a two-way adjustment mode to reduce local overheating.

7. The multifunctional tomato waking cabinet according to claim 2, characterized in that: The cold air circulation, hot air circulation, humidification air duct circulation and dehumidification air duct circulation are switched into different modes by adjusting valves. Multiple valves are integrated in the air duct system, each valve corresponds to a different air circulation mode, the valve is controlled by an electric valve or a servo valve, and its opening or closing state is controlled by the MCU. An angle sensor is installed at each valve position to monitor the opening angle of the valve in real time.

8. The multifunctional tomato waking cabinet as claimed in claim 2, characterized in that: The MCU collects temperature and humidity data of the upper and lower layers in the space through two high-precision temperature and humidity probes. The temperature control adopts a closed-loop feedback mechanism to adjust the working status of the cooling plate and the PTC heater in real time to ensure that the temperature is constant at 20°C. The humidity control uses an adaptive algorithm to dynamically adjust the humidification or dehumidification mode according to the difference between the current humidity and the set humidity. The built-in PID control algorithm is used to adjust the fan speed.

9. The multifunctional tomato waking cabinet according to claim 8, characterized in that: The PID control algorithm comprises the following steps: Initialize the PID controller's parameter proportional coefficient Kp, integral coefficient Ki and differential coefficient Kd. Based on the real-time collected temperature and humidity, the MCU calculates the difference between the current value and the set target value to obtain the error e(t): e(t) = set value - measured value; if the temperature or humidity deviates from the target value, the error will be used to adjust the fan speed.

10. A multifunctional tomato awakening cabinet control method, characterized in that: include: Start the device, and the MCU intelligently controls and reads the temperature and humidity setting values. The MCU collects the current temperature and humidity data in the box through a high-precision temperature and humidity probe and stores it in the system's temporary cache. The system determines whether to start the cooling, heating, humidification or dehumidification module based on the deviation between the collected initial temperature and humidity and the set value; According to the temperature inside the box, MCU controls the operation of the cooling plate and PTC heating system; Set the humidity threshold in the box, and the MCU controls the operation of the semiconductor cooling chip and the fan according to the humidity in the box; The MCU regularly collects temperature and humidity data in the box, and uses the PID algorithm for dynamic adjustment to prevent drastic fluctuations in temperature and humidity and maintain the stability of system operation.

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