A method, system, device and medium for controlling heat and humidity environment in a greenhouse

Abstract

The present invention belongs to the technical field of greenhouse thermal and humid environment control, and discloses a method, system, equipment and medium for controlling the thermal and humid environment in a greenhouse, including: obtaining influencing index parameters of the thermal and humid environment state in the greenhouse, performing qualitative analysis on the influencing index parameters of the thermal and humid environment state in the greenhouse, and obtaining the qualitative analysis results of the influencing indexes; determining a weight calculation function of the influencing index parameters according to the qualitative analysis results of the influencing indexes, and then calculating the weight calculation value of the influencing index parameters of the thermal and humid environment state in the greenhouse; determining the mixing ratio of indoor and outdoor air when controlling and adjusting the thermal and humid environment in the greenhouse according to the weight calculation value of the influencing index parameters of the thermal and humid environment state in the greenhouse, and controlling and adjusting the thermal and humid environment in the greenhouse with the mixing ratio of indoor and outdoor air when controlling and adjusting the thermal and humid environment in the greenhouse; the present invention improves the control efficiency of the thermal and humid environment in the greenhouse and improves energy utilization efficiency by comprehensively considering the influencing index parameters of the thermal and humid environment state in the greenhouse.

Description

Technical Field

[0001] The present invention belongs to the technical field of greenhouse thermal and humid environment control, and in particular relates to a method, system, equipment and medium for controlling the thermal and humid environment in a greenhouse. Background Art

[0002] In agricultural production, it is very common to use temperature for cross-seasonal planting. However, traditional greenhouse environmental control is mostly managed based on manual experience and is usually semi-mechanized. It has large lags, nonlinearity, multiple inputs and multiple outputs, etc., making it difficult to build an accurate mathematical model structure, and it is difficult to accurately regulate it using a simple model-based control strategy. At the same time, traditional greenhouse thermal and humidity environment regulation mostly adopts the method of independent control of temperature and humidity, lacks comprehensive consideration of influencing factors, and only focuses on the regulation of a single factor, thus failing to achieve overall optimization of the greenhouse environment. At the same time, it increases the initial investment and operational complexity of the greenhouse control system. Summary of the Invention

[0003] In response to the technical problems existing in the prior art, the present invention provides a method, system, equipment and medium for controlling the thermal and humid environment in a greenhouse to solve the technical problem that traditional greenhouse thermal and humid environment regulation mostly adopts the method of independent control of temperature and humidity, lacks comprehensive consideration of influencing factors, only focuses on the regulation of a single factor, and thus cannot achieve overall optimization of the greenhouse environment.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention provides a method for controlling a heat and humidity environment in a greenhouse, comprising:

[0006] Obtaining influencing index parameters of the heat and humidity environment state in the greenhouse; wherein the influencing identification parameters of the heat and humidity environment state in the greenhouse include greenhouse heat and humidity state parameters, greenhouse heating system operation state parameters and greenhouse external environment state parameters;

[0007] Based on the influence of the influencing index parameters of the heat and humidity environment state in the greenhouse on the heat and humidity environment state in the greenhouse, a qualitative analysis is performed on the influencing index parameters of the heat and humidity environment state in the greenhouse to obtain a qualitative analysis result of the influencing index;

[0008] Determining a weight calculation function for influencing indicator parameters based on the qualitative analysis results of the influencing indicators;

[0009] Calculating weighted values ​​of the influencing index parameters of the heat and humidity environment state in the greenhouse according to the weighted calculation function of the influencing index parameters;

[0010] According to the weighted calculation value of the influencing index parameter of the heat and humidity environment state in the greenhouse, the mixing ratio of indoor and outdoor air during the control and adjustment of the heat and humidity environment in the greenhouse is determined, and the heat and humidity environment in the greenhouse is controlled and adjusted according to the mixing ratio of indoor and outdoor air during the control and adjustment of the heat and humidity environment in the greenhouse.

[0011] Furthermore, the greenhouse thermal and humidity state parameters include the temperature inside the greenhouse and the temperature change rate inside the greenhouse; the greenhouse heating system operating state parameters include the temperature of the hot water storage tank in the greenhouse heating system; the greenhouse external environment state parameters include the ambient temperature outside the greenhouse and the temperature change rate outside the greenhouse.

[0012] Furthermore, based on the influence of the influencing index parameters of the heat and humidity environment state in the greenhouse on the heat and humidity environment state in the greenhouse, a qualitative analysis is performed on the influencing index parameters of the heat and humidity environment state in the greenhouse to obtain the qualitative analysis results of the influencing indexes, as follows:

[0013] When the greenhouse heating system is turned on, the heat and humidity environment in the greenhouse is set to low temperature and high humidity by default;

[0014] Under low-temperature and high-humidity environmental conditions, based on the principle of energy conservation, a constant assumption result is determined using the controlled variable method; wherein the constant assumption result is that one or both of the mass of the indoor and outdoor mixed air required to be heated by the greenhouse heating system, the temperature of the heated indoor and outdoor mixed air, and the total heat consumed by the greenhouse heating system during the heating process are assumed to be constant;

[0015] According to the results of constant assumptions, a qualitative analysis mathematical model is constructed;

[0016] The influencing index parameters of the heat and humidity environment state in the greenhouse are analyzed using a qualitative analysis mathematical model to obtain the influencing index qualitative analysis results; wherein the influencing index qualitative analysis results are positive impact results on the environment state in the greenhouse or negative impact results on the environment state in the greenhouse.

[0017] Furthermore, based on the qualitative analysis results of the influencing indicators, a process of determining a weight calculation function for influencing indicator parameters is specifically as follows:

[0018] Determining the type of weight calculation function for influencing indicator parameters based on the qualitative analysis results of the influencing indicators;

[0019] Determine the domain and protection threshold of the weight calculation function affecting the index parameters;

[0020] The weight calculation function affecting the index parameter is obtained according to the type of the weight calculation function affecting the index parameter and the definition domain and protection threshold of the weight calculation function affecting the index parameter.

[0021] Furthermore, the type of the weight calculation function of the influencing index parameter is a rectangular trapezoidal function; wherein the hypotenuse slope of the rectangular trapezoidal function is determined according to the qualitative analysis result of the influencing index.

[0022] Furthermore, in the process of determining the domain and protection threshold of the weight calculation function affecting the index parameters, the protection threshold of the weight calculation function affecting the index parameters is optimized by using a gear-type value method, a fitting function value method or a preset neural network value method.

[0023] Furthermore, the weighted calculation values ​​of the greenhouse external environment state parameters in the weighted calculation values ​​of the influencing index parameters of the greenhouse thermal and humid environment state are specifically:

[0024]

[0025]

[0026] in, is the weighted calculated value of the greenhouse external environment state parameters under the optimization target; is the weighted area under the optimization objective; Design an upper temperature limit for the domain; For the current moment The ambient temperature outside the greenhouse is below 100℃; is the domain increment; Defines the lower limit of the domain design temperature.

[0027] The present invention also provides a greenhouse heat and humidity environment control system, comprising:

[0028] An influencing index parameter acquisition module is used to obtain influencing index parameters of the heat and humidity environment state in the greenhouse; wherein the influencing identification parameters of the heat and humidity environment state in the greenhouse include greenhouse heat and humidity state parameters, greenhouse heating system operation state parameters and greenhouse external environment state parameters;

[0029] An index qualitative analysis module is used to perform a qualitative analysis on the index parameters affecting the heat and humidity environment state in the greenhouse based on the influence of the index parameters affecting the heat and humidity environment state in the greenhouse, and obtain an impact index qualitative analysis result;

[0030] A weight calculation function module is used to determine a weight calculation function of an influencing indicator parameter according to the qualitative analysis result of the influencing indicator;

[0031] A weight value calculation module, configured to calculate the weight calculation value of the influencing index parameter of the thermal and humid environment state in the greenhouse according to the weight calculation function of the influencing index parameter;

[0032] The control and adjustment module is used to determine the mixing ratio of indoor and outdoor air when the heat and humidity environment in the greenhouse is controlled and adjusted according to the weighted calculation value of the influencing index parameter of the heat and humidity environment state in the greenhouse, and control and adjust the heat and humidity environment in the greenhouse based on the mixing ratio of indoor and outdoor air when the heat and humidity environment in the greenhouse is controlled and adjusted.

[0033] The present invention also provides a device for controlling heat and humidity in a greenhouse, comprising:

[0034] Memory for storing computer programs;

[0035] The processor is used to implement the steps of the method for controlling the heat and humidity environment in the greenhouse when executing the computer program.

[0036] The present invention also provides a computer-readable storage medium, which stores a computer program, characterized in that when the computer program is executed by a processor, the steps of the method for controlling the heat and humidity environment in a greenhouse are implemented.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The method for controlling a heat and humidity environment in a greenhouse provided by the present invention performs a qualitative analysis on the influencing index parameters of the heat and humidity environment state in the greenhouse, determines a weight calculation function of the influencing index parameters according to the qualitative analysis result, and then determines the weight calculation value of the influencing index parameters of the heat and humidity environment state in the greenhouse; calculates the mixing ratio of indoor and outdoor air when controlling and adjusting the heat and humidity environment in the greenhouse according to the determined weight calculation value of the influencing index parameters of the heat and humidity environment state in the greenhouse, and controls and adjusts the heat and humidity environment in the greenhouse according to the mixing ratio of indoor and outdoor air when controlling and adjusting the heat and humidity environment in the greenhouse; and realizes the mixing ratio of indoor and outdoor air according to the weight calculation value of the influencing index parameters of the heat and humidity environment state in the greenhouse. During the process, the proportion of indoor and outdoor air can be dynamically controlled and adjusted, and the heat and humidity environment in the greenhouse can be dynamically adjusted under a single system, which effectively reduces the construction cost of the initial adjustment system and the complexity of the operation process control operation; secondly, by comprehensively considering the influencing index parameters of the heat and humidity environment state in the greenhouse, the energy can be fully utilized as much as possible under the premise of ensuring the control effect, creating a stable, sustainable and comfortable heat and humidity environment for the crops in the greenhouse, effectively improving the control efficiency of the indoor heat and humidity environment, and ensuring that the indoor heat and humidity environment is always maintained within the design range suitable for crop growth. At the same time, it can reduce the energy consumption of the adjustment system, improve energy utilization efficiency, and achieve energy saving, environmental protection, green and sustainable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the overall structure of the heating system based on the solar-assisted soil-air heat exchanger in Example 1;

[0040] Figure 2 Schematic diagram of the solar thermal storage and heat exchange device in Example 1;

[0041] Figure 3 This is a flow chart of the method for controlling the heat and humidity environment in a greenhouse described in Example 1;

[0042] Figure 4 This is a diagram showing the weight calculation principle in Example 1;

[0043] Figure 5 Schematic diagram of protection threshold distribution calculated by weight at different ambient temperatures and hot water tank temperatures in Example 1;

[0044] Figure 6 Schematic diagram of the calculation principle of a single parameter weight value in Example 1;

[0045] Figure 7 This is the distribution diagram of the thermal and humid environment parameters of the target greenhouse in Example 1;

[0046] Figure 8 This is the psychrometric diagram of the adjustment process under low temperature and high humidity conditions in Example 1;

[0047] Figure 9 This is the enthalpy-humidity diagram of the adjustment process under high temperature and high humidity conditions in Example 1.

[0048] Among them, 100 is the main body of the solar greenhouse, 200 is the insulation layer of the greenhouse; 1 is a solar collector, 2 is a water supply pipe, 3 is a return pipe, 4 is a heat storage tank, 5 is a tube bundle heat exchanger, 6 is a submersible pump; 7 is a soil heat exchange pipe, 8 is an air supply main pipe, 9 is an air supply pipe inside the greenhouse, 10 is an air supply pipe outside the greenhouse, 11 is an air supply main pipe, 12 is an air supply branch pipe, 13 is an axial flow fan, and 14 is an electric heater. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] Example 1

[0051] This embodiment 1 provides a method for controlling the heat and humidity environment in a greenhouse, which is used for the control and regulation process of a greenhouse heating system; wherein the greenhouse heating system is a heating system based on a solar-assisted soil-air heat exchanger; as shown in the attached Figure 1-2 As shown, the solar-assisted soil-air heat exchanger-based heating system includes two solar heat storage and heat exchange subsystems, a soil-air heat exchange subsystem and two electric heaters 14 .

[0052] The two solar heat storage and heat exchange subsystems are respectively located at the two ends of the soil-air heat exchange subsystem. The inlet of the solar heat storage and heat exchange subsystem is connected to the atmosphere outside the solar greenhouse body 100, and the outlet of the solar heat storage and heat exchange subsystem is connected to the air supply and dry pipe in the soil-air heat exchange subsystem; wherein, the solar heat storage and heat exchange subsystem is used to use solar energy to heat the air outside the greenhouse and transport the heated air to the soil-air heat exchange subsystem.

[0053] The two solar heat storage and heat exchange subsystems have the same structure and both adopt solar heat storage and heat exchange devices; the solar heat storage and heat exchange device includes a solar collector 1, a water supply pipeline 2, a return water pipeline 3, a heat storage tank 4, a tube bundle heat exchanger 5 and a submersible pump 6; the solar collector 1 is arranged at the top of the rear wall of the solar greenhouse body 100, and the top of the solar greenhouse body 100 is provided with a greenhouse insulation layer 200; the water supply pipeline 2 and the return water pipeline 3 are both arranged inside the solar greenhouse body 100, and the water supply pipeline 2 and the return water pipeline 3 are laid along the rear wall of the solar greenhouse body 100; the heat storage tank 4 is arranged at the end of the soil-air heat exchange subsystem and is placed underground at both ends of the solar greenhouse body 100.

[0054] The inlet end of the water supply pipe 2 is connected to the water outlet of the heat storage tank 4, and the outlet end of the water supply pipe 2 is connected to the cold water inlet of the solar collector 1; the inlet end of the return water pipe 3 is connected to the hot water outlet of the solar collector 1, and the outlet end of the return water pipe 3 is connected to the water inlet of the heat storage tank 4; the tube bundle heat exchanger 5 is arranged in the heat storage tank 4, and the air inlet of the tube bundle heat exchanger 5 is connected to the atmosphere outside the solar greenhouse body 100, and the outlet air of the tube bundle heat exchanger 5 is connected to the third air inlet on the air supply main pipe in the soil-air heat exchange subsystem; the submersible pump 6 is arranged inside the heat storage tank 4 and placed at the water outlet of the heat storage tank 4; wherein, the water outlet of the submersible pump 6 is connected to the inlet end of the water supply pipe 2.

[0055] The soil-air heat exchange subsystem is arranged inside the solar greenhouse body 100 and along the long axis direction of the solar greenhouse body 100; the soil-air heat exchange subsystem includes a soil heat exchange pipe 7, two air supply main pipes 8, two greenhouse air supply pipes 9, two greenhouse air supply pipes 10, an air supply main pipe 11, several air supply branches 12 and two axial flow fans 13.

[0056] Specifically, the soil heat exchange pipe 7 is buried underground inside the solar greenhouse body 100 and is placed 1-2m underground; wherein, the soil heat exchange pipe 7 is arranged along the long axis direction of the solar greenhouse body 100, and serves as a heat exchange space between the air inside it and the soil; the two air supply dry pipes 8 are respectively arranged at both ends of the soil heat exchange pipe 7, and each of the air supply dry pipes 8 is provided with a first air inlet, a second air inlet, a third air inlet and an air supply port; wherein, the first air inlet is connected to the air inside the solar greenhouse body 100, and the second air inlet is connected to the atmosphere outside the solar greenhouse body 100; the third air inlet on one of the air supply dry pipes is connected to the outlet of one of the solar heat storage and heat exchange subsystems, and the third air inlet on the other air supply dry pipe is connected to the outlet of another solar heat storage and heat exchange subsystem.

[0057] One of the greenhouse air supply pipes 9 and one of the greenhouse external air supply pipes 10 are arranged on both sides of one of the air supply main pipes 8, and another greenhouse air supply pipe 9 and another greenhouse external air supply pipe 10 are arranged on both sides of another air supply main pipe 8; taking the structure of the greenhouse air supply pipe 9 and the greenhouse external air supply pipe 10 arranged on both sides of one of the air supply main pipes 8 as an example: the inlet end of the greenhouse air supply pipe 9 extends to above the inner ground of the solar greenhouse body 100 and is connected to the air in the solar greenhouse body 100, and the inlet end of the greenhouse air supply pipe 9 The outlet end is connected to the first air inlet of the air supply main pipe 8; the inlet end of the outside-greenhouse air supply pipe 10 extends to the outside of the solar greenhouse body 100 and is connected to the atmosphere outside the solar greenhouse body 100; the outlet end of the outside-greenhouse air supply pipe 10 is designed in two ways, one of which is connected to the second air inlet of the air supply main pipe 8, and the other is connected to the air inlet of the tube bundle heat exchanger 5; wherein, the inlet ends of the greenhouse air supply pipe 9 and the outside-greenhouse air supply pipe 10 are respectively provided with filtering structures to filter impurities in the air.

[0058] It should be noted that the structures of the greenhouse air supply pipe 9 and the greenhouse external air supply pipe 10 arranged on both sides of the other air supply dry pipe 8 are similar to the above structure and will not be repeated here; when the double-sided heat storage heat exchange heating mode and the electric heating mode are selected, the air inlet of the tube bundle heat exchanger 5 is connected to the second air inlet of the air supply dry pipe 8 in two ways through the outlet end of the greenhouse external air supply pipe 10, so that the indoor air flow is heated by the tube bundle heat exchanger 5 and then enters the air supply dry pipe 8.

[0059] The air supply main pipe 11 is arranged above the internal ground of the solar greenhouse body 100, and the two ends of the air supply main pipe 11 are respectively connected to the air supply outlets of the two air supply main pipes 8; wherein, the air supply main pipe 11 is used to transport the air after heat exchange with the soil to the interior of the solar greenhouse body 100; a plurality of air supply holes are opened on the air supply main pipe 11, and the plurality of air supply holes are evenly distributed along the axis of the air supply main pipe 11, and a plurality of air supply branch pipes 12 are correspondingly arranged at the plurality of air supply holes; wherein, one end of the air supply branch pipe 12 is connected to the air supply hole, and the other end of the air supply branch pipe 12 is connected to the air inside the solar greenhouse body 100.

[0060] The two axial flow fans 13 are respectively arranged in the two air supply main pipes 8, and the axial flow fans 13 are used to provide wind power; wherein, the axial flow fans 13 are arranged between the first air inlet and the third air inlet of the air supply main pipe 8; the two electric heaters 14 are respectively arranged at the two ends of the air supply main pipe 11, and are respectively arranged close to one side of the two air supply main pipes 8; wherein, the electric heaters 14 are used to electrically heat the airflow sent into the air supply main pipe 11; the electric heaters 14 are arranged on the air supply main pipe 11, and the air supply main pipe 11 has the functions of high temperature resistance and detachability; the electric heaters 14 are connected in series with the main body of the air supply main pipe 11, and the connection is a closed connection.

[0061] It should be noted that, under the premise of normal operation of the heating system, the heat storage tank 4 and the soil-air heat exchange subsystem can both meet the daily heat load requirements of the solar greenhouse body, and the heat that can be provided by the heat storage tank is greater than the heat that can be provided by the soil-air heat exchange subsystem.

[0062] It should be noted that the ventilation control strategy based on the solar-assisted soil-air heat exchanger heating system is a method of performing secondary mixing of the air; wherein, the first air mixing process is the mixing of the air inside the greenhouse with the air outside the greenhouse, and the second air mixing process is the mixing of the air heated by the well heating system with the air inside the greenhouse; the method for controlling the heat and humidity environment in the greenhouse described in this embodiment 1 is mainly used for the design of the proportion of indoor gas in the mixed air in the first air mixing process.

[0063] As attached Figure 3 As shown, the method for controlling the heat and humidity environment in a greenhouse described in this embodiment 1 includes the following steps:

[0064] Step 1: Obtain influencing index parameters of the greenhouse thermal and humidity environment. The influencing index parameters of the greenhouse thermal and humidity environment include greenhouse thermal and humidity state parameters, greenhouse heating system operating state parameters, and greenhouse external environment state parameters. Specifically, the greenhouse thermal and humidity state parameters include the greenhouse temperature and the greenhouse temperature change rate. The greenhouse heating system operating state parameters include the temperature of the hot water storage tank in the greenhouse heating system. The external environment state parameters include the greenhouse external environment temperature and the greenhouse external environment temperature change rate.

[0065] Step 2: Based on the influence of the influencing index parameters of the heat and humidity state in the greenhouse on the heat and humidity environment state in the greenhouse, a qualitative analysis is performed on the influencing index parameters of the heat and humidity environment state in the greenhouse to obtain a qualitative analysis result of the influencing index.

[0066] The qualitative analysis process is as follows:

[0067] The thermal and humid environment in the greenhouse is set to a low-temperature and high-humidity environment state by default when the greenhouse heating system is turned on; in the low-temperature and high-humidity environment state, based on the principle of conservation of energy, the constant assumption result is determined by the control variable method; wherein, the constant assumption result is to assume that one or two of the mass of the indoor and outdoor mixed air required to be heated by the greenhouse heating system, the temperature state of the indoor and outdoor mixed air after heating, and the total heat consumed during the heating process of the greenhouse heating system are constants; according to the constant assumption result, a qualitative analysis mathematical model is constructed; using the qualitative analysis mathematical model, the influencing index parameters of the thermal and humid environment state in the greenhouse are analyzed to obtain the qualitative analysis results of the influencing indicators; wherein, the qualitative analysis results of the influencing indicators are positive impact results on the environmental state in the greenhouse or negative impact results on the environmental state in the greenhouse.

[0068] Taking the qualitative analysis process of the external ambient temperature of the greenhouse as an example, the details are as follows:

[0069] When the greenhouse heating system is turned on, the thermal and humid environment in the greenhouse is set to a low temperature and high humidity environment by default.

[0070] In a low-temperature and high-humidity environment, based on the principle of conservation of energy and through the control variable method, it is assumed that one or two of the mass of the indoor and outdoor mixed air required to be heated by the greenhouse heating system, the temperature state of the indoor and outdoor mixed air after heating, and the total heat consumed during the heating process of the greenhouse heating system are constants, and the constant assumption result is obtained.

[0071] Based on the constant assumption result, a mathematical model for qualitative analysis of the temperature parameters of the external environment of the greenhouse is constructed. Specifically, assuming that the total heat consumed by the greenhouse heating system during the heating process is constant, according to the principle of conservation of energy, since part of the total heat consumed by the greenhouse heating system during the heating process is used to heat the indoor air in the mixed air, and the other part is used to heat the outdoor air in the mixed air, the mathematical model for qualitative analysis of the temperature parameters of the external environment of the greenhouse is constructed, specifically:

[0072]

[0073] in, The total amount of heat consumed in heating the greenhouse heating system; The quality of indoor air in mixed air; is the specific heat capacity of air; is the temperature of the mixed air after heating; The temperature of the indoor air before heating; is the quality of the outdoor air in the mixed air; The temperature of the outdoor air before heating.

[0074] Using the mathematical model of the qualitative analysis of the temperature parameters outside the greenhouse, the impact analysis of the influencing index parameters of the heat and humidity environment state in the greenhouse is carried out to obtain the impact analysis results; for example: when the temperature of the outdoor air before heating When the temperature rises, the heat required to heat the same mass of outdoor air to the same temperature state decreases; therefore, under the condition that the total heat consumed in the heating process is the same, more room temperature, low temperature and low humidity air can be introduced to increase the greenhouse dehumidification effect without increasing the cold air heating burden.

[0075] Based on the impact analysis results, the growth of the proportion of outdoor air in the mixed air when the influencing index parameters of the thermal and humid environmental state in the greenhouse increases is judged; according to the growth of the proportion of outdoor air in the mixed air, the qualitative analysis results of the influencing index parameters of the thermal and humid environmental state in the greenhouse are determined; for example: assuming that the increase in the ambient temperature parameters outside the greenhouse leads to an increase in the proportion of outdoor air in the mixed air, the qualitative analysis results of the ambient temperature parameters outside the greenhouse are positive impact results on the environmental state inside the greenhouse.

[0076] Step 3: Determine the weight calculation function of the influencing index parameters based on the qualitative analysis results of the influencing index. The process of determining the weight calculation function of the influencing index parameters is as follows:

[0077] Step 31. Determine the type of weight calculation function of the influencing indicator parameters based on the qualitative analysis results of the influencing indicator; wherein, the type of weight calculation function of the influencing indicator parameters includes a sinusoidal function, a rectangular trapezoidal function, a trigonometric function, and a Gaussian function; it should be noted that the sinusoidal function is suitable for an input-output relationship with periodic changes, the rectangular trapezoidal function is suitable for describing an input-output relationship with obvious step changes, the trigonometric function is suitable for describing a linear relationship between input and output, and the Gaussian function is suitable for describing an input-output relationship with a peak or concentration.

[0078] In order to ensure the performance and stability of the greenhouse heating system, the rectangular trapezoidal function is used as the type of weight calculation function affecting the index parameters in this embodiment 1, as shown in the attached figure. Figure 4 As shown; wherein, the hypotenuse slope of the rectangular trapezoidal function is determined according to the qualitative analysis results of the influencing indicators.

[0079] Step 32: Determine the domain and protection threshold of the weight calculation function affecting the index parameters.

[0080] Specifically, the process of determining the domain of the weight calculation function that affects the index parameters is as follows:

[0081] According to the relevant data in actual production, the initial value of the domain of the weight calculation function is set; wherein, the initial value of the domain of the weight calculation function includes: the temperature in the greenhouse Initial design range, external ambient temperature Initial design range, external temperature change rate Initial design range, hot water tank temperature Initial design range and temperature change rate in the greenhouse Initial design range; preferably, the temperature in the greenhouse The initial design range is [9,17], and the external environment temperature The initial design range is [-5,5], and the external temperature change rate is The initial design range is [0,3], and the temperature of the hot water tank is The initial design range is [45,65], and the temperature change rate in the greenhouse The initial design range is [0,2]; it should be noted that when the parameter change reaches the upper or lower limit, the calculated output result of the corresponding parameter weight value is a fixed value of 1 or 0.

[0082] Afterwards, the initial value of the domain of the weight calculation function is repeatedly debugged and optimized according to the actual situation to obtain the domain of the weight calculation function that affects the index parameters; specifically, the optimization process of the domain is as follows: during operation, the domain is adjusted according to the feedback information of the thermal and humid environment in the greenhouse; wherein, the increase or decrease of the greenhouse temperature or humidity fluctuation is calculated by the least squares method to determine whether its adjustment effect is beneficial or deteriorating to the target greenhouse environment; when the state change of the influencing index parameter makes the residual result decrease, it is considered that the effect of the parameter change on the heating effect is beneficial, otherwise it is deteriorating; thus, by analyzing the effect of greenhouse environment control, in order to achieve a more ideal indoor state; the weight parameters are changed by adjusting the domain. , so that the indoor and outdoor mixing ratio can be controlled and the greenhouse environment can be regulated.

[0083] Among them, the calculation formula of the least squares method is:

[0084]

[0085] in, To regulate the temperature at a certain moment in the cycle; is the average temperature during the adjustment period; is the residual result.

[0086] It should be noted that the adjustment cycle refers to determining a specific adjustment cycle for statistics and analysis to calculate the temperature mean and residual results in order to reduce the control error when the changes in the index parameters affect the heating effect; the length of the adjustment cycle can be selected from a few minutes to a few days, and the user can set it according to his or her own requirements for adjustment sensitivity; preferably, the adjustment cycle in this embodiment 1 is 1 hour.

[0087] Specifically, the process of determining the protection threshold of the weight calculation function affecting the index parameters is as follows:

[0088] First, during the first mixing process of indoor and outdoor air, the actual meaning of the weight calculation result is the proportion of indoor air. As the proportion of outdoor air increases, the load demand of the greenhouse heating system also increases. Therefore, during the first mixing process, the mixing ratio of indoor and outdoor air must take into account both the storage status of the existing hot water storage tank and the heat loss due to heat transfer to the environment. Here, a reference range of the weight calculation protection threshold is designed for different hot water storage tank temperatures and external ambient temperatures to ensure that during the process of weight adjustment of indoor and outdoor air mixing, the heating system meets the heating demand and the heat is utilized as fully as possible.

[0089] Secondly, the design of the protection threshold is affected by factors such as the system's heating capacity, building load demand, and economy. Therefore, the range of the protection threshold is affected by the actual state of the greenhouse and environmental factors and is not fixed. By designing the protection threshold calculated by weight under different states, the weight control of the first mixing process is adjusted, as shown in the attached figure. Figure 5 The weighted calculation protection threshold is applied by changing the Figure 4 The upper or lower limit of the domain is defined in the weight calculation, so that the weight value calculation result is in the attached Figure 5 The protection threshold range is within the range; the parameter results that meet the protection threshold design range are output, and the parameters that do not meet the protection threshold design range are re-modified and calculated again, and the above process is repeated until the design range requirements are met.

[0090] In this embodiment 1, for the protection threshold of the weight, considering the adjustment of the target parameter design range under different parameter states, the following gear-type value method, fitting function value method or preset neural network value method is adopted to optimize the value of the protection threshold of the weight calculation function affecting the index parameter. The appropriate method can be selected according to actual needs.

[0091] (1) Gear type value method:

[0092] By analyzing the historical data of the greenhouse control, when the environmental parameters in the greenhouse fluctuate violently, it indicates that the regulation system is unable to meet the greenhouse demand. At this time, according to the principle of conservation of energy, the weight threshold range is appropriately adjusted to control the indoor and outdoor air mixing ratio and achieve the purpose of heat utilization of the regulation system. Assuming that the protection threshold of the function under a certain environmental state is [0.5, 0.8], under this parameter, the greenhouse temperature fluctuates violently, indicating that the regulation system cannot meet the load demand. Therefore, the lower limit of the protection threshold can be set to 0.5, 0.6 or 0.7, and the protection threshold is first increased to [0.6, 0.8]. Run the system, and if the result is not ideal, repeat this process until the result meets the demand. In the selection of the protection threshold value range, there is no fixed requirement for the difference between the upper and lower limits. Preferably, in this embodiment 1, the difference between the upper and lower limits of the protection threshold is preferably 0.2.

[0093] (2) Fitting function value determination method:

[0094] When designing the value range of the weight threshold under different working conditions, the heat loss and the energy stored in the heat storage tank are comprehensively considered, and the change of the weight threshold is analyzed and set by the law of energy conservation. Preferably, a multivariate linear function is designed as the weight value function, and the function of the weight threshold is obtained by substituting the state parameters under the actual operating conditions. For example, assuming that the heat loss of the greenhouse only considers the heat conduction under the temperature difference between indoor and outdoor and the convective heat transfer under infiltration ventilation, the temperature and wind speed in the external environmental parameters are selected as function variables; the temperature of the heat storage tank represents the adjustable capacity of the regulation system, and the water temperature of the heat storage tank is selected as the function variable; the objective function can be obtained by substituting the relevant parameters under manual experience adjustment; wherein the weight value function is:

[0095]

[0096] in, is the external environment temperature; is the external wind speed term; is the temperature term of the hot water storage tank; is the external environment temperature coefficient; is the external wind speed coefficient; is the temperature term coefficient of the hot water storage tank; is the constant term coefficient; where the coefficient ,coefficient ,coefficient and coefficients It is obtained by bringing in the previous state parameter points. Later, the state points can be re-selected and re-fitted to achieve the optimization of the adjustment effect.

[0097] (3) Neural network value selection method

[0098] In the early stage of greenhouse system operation, the initial value of the weight threshold is manually set. During operation, the gear-type value-taking method is used for optimization and the data within the operation period is stored. Through the stored system operation history data, the protection threshold under different greenhouse system parameters, heating status parameters and external environmental parameters is trained to obtain the setting range of the protection threshold under different parameter states. The parameter information of subsequent operation periods is continuously stored, and the response logic of the neural network is periodically trained to achieve continuous optimization of the protection threshold.

[0099] Step 33: Obtain the weight calculation function of the influencing index parameter according to the type of the weight calculation function of the influencing index parameter and the definition domain and protection threshold of the weight calculation function of the influencing index parameter; wherein the protection threshold is adjusted by changing the value range of the definition domain, and the weight calculation of the definition domain is shown as follows: Figure 6 As shown; Taking the ambient temperature as an example, the similarity principle of the triangle can be obtained: the weight parameter at the current moment , weight parameters under optimization objectives , weight parameter difference , weighted area at the current moment , weighted area under optimization target , weighted area difference , the weight value at the current moment , weight value under optimization target and weight difference .

[0100] Weight parameter at the current moment for:

[0101]

[0102] Weight parameters under optimization objectives for:

[0103]

[0104] Weight parameter difference for:

[0105]

[0106] Weighted area at the current moment for:

[0107]

[0108] Weighted area under optimization target for:

[0109]

[0110] Weighted area difference for:

[0111]

[0112] The weight value at the current moment for:

[0113]

[0114] Weight value under optimization target for:

[0115]

[0116] Weight value difference for:

[0117]

[0118] in, is the upper limit of design temperature; is the temperature at the current moment k; is the domain increment; The lower limit of design temperature.

[0119] Step 4: Based on the current value of the influencing index parameter, the weight value of the influencing index parameter is calculated using the weight calculation function of the influencing index parameter. Specifically, by collecting real-time data on greenhouse climate parameters, the weight area of ​​the corresponding parameter pair is calculated according to the constructed function; the accumulated value of the weight area of ​​different parameter objects is normalized; wherein, the collected parameter data is calculated in real time through the designed weight calculation process, and the result is normalized so that the final solution is a natural number [0,1], realizing the dynamic adjustment of the first hybrid control process, thereby optimizing the control results of the thermal and humid environment in the greenhouse.

[0120] Step 5: Determine the mixing ratio of indoor and outdoor air during greenhouse heat and humidity environment control and adjustment based on the weighted calculated values ​​of the influencing index parameters of the greenhouse heat and humidity environment state, and control and adjust the greenhouse heat and humidity environment based on the mixing ratio of indoor and outdoor air during greenhouse heat and humidity environment control and adjustment. Specifically, the weighted calculated values ​​of the influencing index parameters of the greenhouse heat and humidity environment state are used as the mixing ratio of indoor and outdoor air. Numerical calculations are performed based on the total ventilation volume and the weighted values ​​to respectively determine the total amount of indoor and outdoor air in mixed ventilation.

[0121] In this embodiment 1, the greenhouse control strategy monitors the changes in the thermal and humid environmental parameters in the greenhouse, and adjusts the thermal and humid environment of the greenhouse by adjusting the flow rate of hot air entering the room; the greenhouse control strategy outputs the heating demand air volume by monitoring the state changes of the control target, and by performing numerical calculations with the weight calculation results, the indoor and outdoor air volumes in the first mixing process can be respectively obtained; after the mixed air is heated by the heating system, the hot air is mixed with the indoor cold air for a second time to achieve dynamic adjustment of the thermal and humid environment of the greenhouse; the above process is repeated to complete the weighted ventilation adjustment strategy for the thermal and humid environment in the greenhouse under the established control strategy.

[0122] In Example 1, the heat storage tank stores solar energy in sunny weather and is used in series with the soil-air heat exchanger to heat the greenhouse at night. The first mixed cold air is heated and then introduced into the greenhouse, where it is mixed with the gases in the greenhouse for a second time to achieve thermal and humid environment regulation of the target greenhouse. The distribution diagram of the thermal and humid environment parameters of the target greenhouse is shown in Figure 1. Figure 7 As shown, taking the greenhouse heat and humidity environment as the control object, the state that does not meet the design range is as follows Figure 7There are three different situations shown, namely, both temperature and humidity parameters do not meet A, only temperature does not meet B, and only humidity does not meet C. The crops in the greenhouse continuously release water vapor due to respiration, so the humidity in the greenhouse continues to maintain a higher level than the external environment. In this embodiment 1, temperature and humidity adjustment is divided into two categories, including high temperature and high humidity (A2, B1) and low temperature and high humidity (A4, B2, C2).

[0123] Example Scenario 1:

[0124] Under low temperature and high humidity conditions, Figure 7 In C2, B2 and A4, low-temperature and low-humidity air is obtained by directly mixing the outdoor low-temperature and low-humidity air with the indoor low-temperature and high-humidity air. The mixed gas is heated by the heating system to obtain high-temperature and low-humidity air. The high-temperature and low-humidity air is mixed with the indoor low-temperature and high-humidity gas to obtain an ideal gas state, thereby realizing the regulation of the indoor thermal and humid environment. Taking the greenhouse thermal and humid environment in the C2 area as an example, the control process is: by controlling the axial flow fan, the outdoor low-temperature and low-humidity air and the indoor low-temperature and high-humidity air are quantitatively introduced, and low-temperature and low-humidity air is obtained by direct mixing. The mixed gas is heated by the heating system to obtain high-temperature and low-humidity air. The high-temperature and low-humidity air is mixed with the indoor low-temperature and high-humidity gas to obtain an ideal gas state, thereby realizing the regulation of the indoor thermal and humid environment. Among them, the enthalpy and humidity diagram of the regulation process under the low-temperature and high-humidity state is shown in the attached figure. Figure 8 shown.

[0125] Example Scenario 2:

[0126] Under high temperature and high humidity conditions, Figure 7 In the A2 and B1 areas, the indoor air is in a high temperature and high humidity state. At this time, the outside low temperature and low humidity air is introduced and mixed with the indoor high temperature and high humidity air to achieve the regulation of the thermal and humid environment. Taking the greenhouse thermal and humid environment in the A2 area as an example, the regulation process is as follows: for the air inside the greenhouse in a high temperature and high humidity state, the electric valve of the heating system is adjusted to change the flow path of the outdoor air, so that the outdoor air no longer passes through the regulation system for heating and is directly mixed with the high temperature and high humidity air in the greenhouse. The enthalpy and humidity diagram of the regulation process under the high temperature and high humidity state is shown in the attached figure. Figure 9 As shown; from the attached Figure 9 It can be seen that the actual range of temperature and humidity can be reached by directly mixing the gases inside and outside the greenhouse, so the mixed air no longer needs to be heated by the heating system; after adjusting the gas flow path, the outdoor gas is directly introduced into the greenhouse without being mixed and heated by the adjustment system.

[0127] Example 2

[0128] This embodiment 2 provides a greenhouse heat and humidity environment control system, comprising: an influencing index parameter acquisition module, configured to acquire influencing index parameters of the greenhouse heat and humidity environment state; wherein the influencing identification parameters of the greenhouse heat and humidity environment state include greenhouse heat and humidity state parameters, greenhouse heating system operation state parameters, and greenhouse external environment state parameters; an index qualitative analysis module, configured to perform a qualitative analysis on the influencing index parameters of the greenhouse heat and humidity environment state based on the influence of the influencing index parameters of the greenhouse heat and humidity environment state on the greenhouse heat and humidity environment state, and obtain an influencing index qualitative analysis result; a weight calculation function module, configured to determine a weight calculation function of the influencing index parameters based on the influencing index qualitative analysis result; a weight value calculation module, configured to calculate a weight calculation value of the influencing index parameters of the greenhouse heat and humidity environment state based on the weight calculation function of the influencing index parameters; and a control and adjustment module, configured to determine a mixing ratio of indoor and outdoor air during control and adjustment of the greenhouse heat and humidity environment based on the weight calculation value of the influencing index parameters of the greenhouse heat and humidity environment state, and control and adjust the greenhouse heat and humidity environment based on the mixing ratio of indoor and outdoor air during control and adjustment of the greenhouse heat and humidity environment.

[0129] Example 3

[0130] This embodiment 3 provides a greenhouse heat and humidity environment control device, including: a memory for storing a computer program; a processor for implementing the steps of a greenhouse heat and humidity environment control method when executing the computer program; or, when the processor executes the computer program, implementing the functions of each module in the above system.

[0131] For example, the computer program may be divided into one or more modules / units, which are stored in the memory and executed by the processor to implement the present invention. The one or more modules / units may be a series of computer program instruction segments capable of implementing preset functions, and the instruction segments are used to describe the execution process of the computer program in the greenhouse thermal and humidity environment control device.

[0132] The greenhouse heat and humidity environment control device can be a computing device such as a desktop computer, laptop, PDA, or cloud server. The greenhouse heat and humidity environment control device can include, but is not limited to, a processor and memory. Those skilled in the art will appreciate that the above examples of greenhouse heat and humidity environment control devices do not limit the scope of greenhouse heat and humidity environment control devices. The greenhouse heat and humidity environment control device can include more components than those described above, or combinations of certain components, or different components. For example, the greenhouse heat and humidity environment control device can also include input and output devices, network access devices, buses, and the like.

[0133] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor. The processor serves as the control center of the greenhouse heat and humidity environment control device, and utilizes various interfaces and lines to connect various parts of the greenhouse heat and humidity environment control device.

[0134] The memory can be used to store the computer program and / or module, and the processor realizes various functions of the heat and humidity environment control device in the greenhouse by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory.

[0135] The memory may primarily include a program storage area and a data storage area. The program storage area may store an operating system and at least one application required for a function (such as sound playback or image playback); the data storage area may store data generated based on the use of the mobile phone (such as audio data and a phone book). Furthermore, the memory may include high-speed random access memory (RAM) and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a Flash Card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0136] Example 4

[0137] This embodiment 4 provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the method for controlling the heat and humidity environment in a greenhouse described in the above embodiment 1 are implemented, which will not be repeated here.

[0138] It should be noted that if the integrated module of the greenhouse heat and humidity environment control system described in the above embodiment 2 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0139] Based on this understanding, the present invention can implement all or part of the processes in the above-mentioned greenhouse heat and humidity environment control method by using a computer program to instruct relevant hardware. The computer program can be stored in a computer-readable storage medium. When executed by a processor, the computer program can implement the steps of the above-mentioned greenhouse heat and humidity environment control method. The computer program includes computer program code, which can be in source code form, object code form, executable file, or a pre-set intermediate form.

[0140] The computer-readable storage medium may include: any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0141] It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practices in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practices, computer-readable storage media do not include electrical carrier signals and telecommunication signals.

[0142] The method for controlling the heat and humidity environment in a greenhouse described in the present invention takes into account many influencing factors and reasonably introduces outdoor cold air while ensuring the adjustment effect, thereby realizing the adjustment of the heat and humidity environment parameters of the greenhouse under a single system. It proposes a feasible solution to the problem of independent control of greenhouse temperature and humidity, and reduces the initial construction cost of the adjustment system and the operational difficulty during operation and adjustment.

[0143] In the present invention, a secondary mixing treatment method for air is adopted. The indoor and outdoor air are mixed for the first time, and the mixed gas is heated and heated by the heating system. Then the heated air is mixed with the indoor air for the second time to achieve the regulation of the heat and humidity environment in the greenhouse. Among them, during the first air mixing, the designed weight calculation method is used to dynamically control and adjust the proportion of indoor and outdoor air in the mixing process. With this control method, it is possible to achieve dynamic regulation of the heat and humidity environment in the greenhouse under a single system, effectively reducing the construction cost of the initial regulation system and the complexity of the operation process control operation. At the same time, the weight calculation method for the first air mixing comprehensively considers the various factors that affect the microclimate of the greenhouse, and makes full use of energy as much as possible while ensuring the control effect. This invention creates a stable, sustainable and comfortable heat and humidity environment for indoor crops, effectively improves the regulation efficiency of the indoor heat and humidity environment, and can reduce the energy consumption of the regulation system while ensuring that the indoor heat and humidity environment is always maintained within the design range suitable for crop growth, thereby improving energy utilization efficiency and achieving energy conservation, environmental protection, and green sustainability.

[0144] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention.

Claims

1. A method for controlling heat and humidity in a greenhouse, characterized in that: include: Obtaining influencing index parameters of the heat and humidity environment state in the greenhouse; wherein the influencing index parameters of the heat and humidity environment state in the greenhouse include greenhouse heat and humidity state parameters, greenhouse heating system operation state parameters and greenhouse external environment state parameters; Based on the influence of the influencing index parameters of the heat and humidity environment state in the greenhouse on the heat and humidity environment state in the greenhouse, a qualitative analysis is performed on the influencing index parameters of the heat and humidity environment state in the greenhouse to obtain a qualitative analysis result of the influencing index; Determining a weight calculation function for influencing indicator parameters based on the qualitative analysis results of the influencing indicators; Calculating weighted values ​​of the influencing index parameters of the heat and humidity environment state in the greenhouse according to the weighted calculation function of the influencing index parameters; determining, based on the weighted calculated values ​​of the influencing index parameters of the heat and humidity environment state in the greenhouse, a mixing ratio of indoor and outdoor air during heat and humidity environment control and adjustment in the greenhouse, and performing heat and humidity environment control and adjustment in the greenhouse based on the mixing ratio of indoor and outdoor air during heat and humidity environment control and adjustment in the greenhouse; The greenhouse heat and humidity state parameters include the temperature in the greenhouse and the temperature change rate in the greenhouse; the greenhouse heating system operation state parameters include the temperature of the hot water storage tank in the greenhouse heating system; the greenhouse external environment state parameters include the ambient temperature outside the greenhouse and the ambient temperature change rate outside the greenhouse; The process of determining the weight calculation function of the influencing indicator parameters based on the qualitative analysis results of the influencing indicators is as follows: Determining the type of weight calculation function for influencing indicator parameters based on the qualitative analysis results of the influencing indicators; Determine the domain and protection threshold of the weight calculation function affecting the index parameters; Obtaining a weight calculation function affecting the index parameter according to the type of the weight calculation function affecting the index parameter and the definition domain and protection threshold of the weight calculation function affecting the index parameter; The weighted calculation values ​​of the greenhouse external environment state parameters in the weighted calculation values ​​of the influencing index parameters of the greenhouse thermal and humid environment state are specifically: in, is the weighted calculated value of the greenhouse external environment state parameters under the optimization target; is the weighted area under the optimization objective; Design an upper temperature limit for the domain; For the current moment The ambient temperature outside the greenhouse is below 100℃; is the domain increment; is the lower limit of the domain design temperature; Control and adjust the heat and humidity environment in the greenhouse, specifically: After the mixed air is heated by the heating system, it is mixed with the indoor cold air for a second time to achieve dynamic regulation of the greenhouse's thermal and humid environment; The heat storage tank stores solar energy in clear weather and is used in series with the soil-air heat exchanger to heat the greenhouse at night. The first mixed cold air is heated and then introduced into the greenhouse, where it is mixed with the gases in the greenhouse for a second time to regulate the thermal and humid environment of the target greenhouse.

2. A method for controlling heat and humidity in a greenhouse according to claim 1, characterized in that: Based on the influence of the influencing index parameters of the heat and humidity environment state in the greenhouse on the heat and humidity environment state in the greenhouse, a process of performing a qualitative analysis on the influencing index parameters of the heat and humidity environment state in the greenhouse and obtaining the qualitative analysis results of the influencing index is as follows: When the greenhouse heating system is turned on, the heat and humidity environment in the greenhouse is set to low temperature and high humidity by default; Under low-temperature and high-humidity environmental conditions, based on the principle of energy conservation, a constant assumption result is determined using the controlled variable method; wherein the constant assumption result is that one or both of the mass of the indoor and outdoor mixed air required to be heated by the greenhouse heating system, the temperature of the heated indoor and outdoor mixed air, and the total heat consumed by the greenhouse heating system during the heating process are assumed to be constant; According to the results of constant assumptions, a qualitative analysis mathematical model is constructed; The influencing index parameters of the heat and humidity environment state in the greenhouse are analyzed using a qualitative analysis mathematical model to obtain the influencing index qualitative analysis results; wherein the influencing index qualitative analysis results are positive impact results on the environment state in the greenhouse or negative impact results on the environment state in the greenhouse.

3. A method for controlling heat and humidity in a greenhouse according to claim 1, characterized in that: In the process of determining the definition domain and protection threshold of the weight calculation function affecting the index parameters, the protection threshold of the weight calculation function affecting the index parameters is optimized by using a gear-type valuation method, a fitting function valuation method or a preset neural network valuation method.

4. A greenhouse heat and humidity environment control system, characterized in that: include: An influencing index parameter acquisition module is used to obtain influencing index parameters of the heat and humidity environment state in the greenhouse; wherein the influencing index parameters of the heat and humidity environment state in the greenhouse include greenhouse heat and humidity state parameters, greenhouse heating system operation state parameters and greenhouse external environment state parameters; An index qualitative analysis module is used to perform a qualitative analysis on the index parameters affecting the heat and humidity environment state in the greenhouse based on the influence of the index parameters affecting the heat and humidity environment state in the greenhouse, and obtain an impact index qualitative analysis result; A weight calculation function module is used to determine a weight calculation function of an influencing indicator parameter according to the qualitative analysis result of the influencing indicator; A weight value calculation module, configured to calculate the weight calculation value of the influencing index parameter of the thermal and humid environment state in the greenhouse according to the weight calculation function of the influencing index parameter; a control and adjustment module, configured to determine, based on the weighted calculated values ​​of the influencing index parameters of the heat and humidity environment state in the greenhouse, a mixing ratio of indoor and outdoor air during control and adjustment of the heat and humidity environment in the greenhouse, and control and adjust the heat and humidity environment in the greenhouse based on the mixing ratio of indoor and outdoor air during control and adjustment of the heat and humidity environment in the greenhouse; The greenhouse heat and humidity state parameters include the temperature in the greenhouse and the temperature change rate in the greenhouse; the greenhouse heating system operation state parameters include the temperature of the hot water storage tank in the greenhouse heating system; the greenhouse external environment state parameters include the ambient temperature outside the greenhouse and the ambient temperature change rate outside the greenhouse; The process of determining the weight calculation function of the influencing indicator parameters based on the qualitative analysis results of the influencing indicators is as follows: Determining the type of weight calculation function for influencing indicator parameters based on the qualitative analysis results of the influencing indicators; Determine the domain and protection threshold of the weight calculation function affecting the index parameters; Obtaining a weight calculation function affecting the index parameter according to the type of the weight calculation function affecting the index parameter and the definition domain and protection threshold of the weight calculation function affecting the index parameter; The weighted calculation values ​​of the greenhouse external environment state parameters in the weighted calculation values ​​of the influencing index parameters of the greenhouse thermal and humid environment state are specifically: in, is the weighted calculated value of the greenhouse external environment state parameters under the optimization target; is the weighted area under the optimization objective; Design an upper temperature limit for the domain; For the current moment The ambient temperature outside the greenhouse is below 100℃; is the domain increment; is the lower limit of the domain design temperature; Control and adjust the heat and humidity environment in the greenhouse, specifically: After the mixed air is heated by the heating system, it is mixed with the indoor cold air for a second time to achieve dynamic regulation of the greenhouse's thermal and humid environment; The heat storage tank stores solar energy in clear weather and is used in series with the soil-air heat exchanger to heat the greenhouse at night. The first mixed cold air is heated and then introduced into the greenhouse, where it is mixed with the gases in the greenhouse for a second time to regulate the thermal and humid environment of the target greenhouse.

5. A heat and humidity environment control device in a greenhouse, characterized in that: include: Memory for storing computer programs; A processor is used to implement the steps of the method for controlling the heat and humidity environment in a greenhouse as described in any one of claims 1 to 3 when executing the computer program.

6. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method for controlling the heat and humidity environment in a greenhouse as described in any one of claims 1 to 3 are implemented.

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