An air conditioner, a control method thereof, a storage medium, and an electronic device

Abstract

The application discloses a heat preservation air conditioner, a control method thereof, a storage medium and electronic equipment. The heat preservation air conditioner is applied to a greenhouse, and comprises a gas isolation chamber, a first air outlet and a second air outlet. The gas isolation chamber is arranged at the top of the greenhouse, and the inner wall or the outer wall of the gas isolation chamber is covered with a heat preservation material. The first air outlet is arranged in the upper space in the greenhouse and is communicated with the gas isolation chamber. The first air outlet is opened in the daytime period, so that high-temperature gas enters the gas isolation chamber. The first air outlet is closed in the transition period, so that the high-temperature gas is enclosed in the gas isolation chamber. The first air outlet is opened in the nighttime period, so that the high-temperature gas escapes from the first air outlet. The second air outlet is arranged in the bottom space in the greenhouse. The second air outlet is communicated with the first air outlet through a first air duct. An air circulating fan is arranged in the first air duct. Through the application, the heat energy can be recycled and utilized. The recycled heat energy is used for heating the greenhouse at night, so that energy waste is avoided.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, and more specifically, to a thermal insulation air conditioner, its control method, storage medium, and electronic equipment. Background Technology

[0002] A greenhouse is a general term for buildings that use light-transmitting covering materials as all or part of their enclosure structure, providing a space for cultivating plants during winter or other seasons unsuitable for outdoor growth. Solar radiation, primarily shortwave radiation, enters the greenhouse through these materials, raising the indoor ground and air temperatures and converting into longwave radiation. This longwave radiation is then blocked by the greenhouse covering, causing heat accumulation and resulting in a greenhouse temperature higher than the outdoor environment temperature. This process is known as the greenhouse effect. Greenhouses utilize the greenhouse effect to raise indoor temperatures, create and maintain a suitable environment for crop growth, thereby achieving goals such as off-season crop production, increased crop yields, improved productivity, and reduced environmental energy consumption. The warming effect in greenhouses during winter is beneficial for plant growth and reduces environmental energy consumption. For cold northern regions, greenhouses provide the possibility of supplying fruits and vegetables during winter.

[0003] In current greenhouses, the temperature is low at night, which increases the load on heat exchange equipment and increases energy consumption. Meanwhile, the solar radiation heat is high during the day, and the temperature inside the greenhouse is high, even higher than expected. This part of the heat energy cannot be effectively collected and utilized, resulting in energy waste.

[0004] There is currently no effective solution to the problem of large daytime and nighttime temperature differences in greenhouses, which prevents the effective collection and utilization of solar radiation heat during the day and leads to energy waste. Summary of the Invention

[0005] This invention provides a thermal insulation air conditioner, its control method, storage medium, and electronic device to solve the problem of large day-night temperature differences in greenhouses in the prior art, which leads to the inability to effectively collect and utilize solar radiation heat during the day, resulting in energy waste.

[0006] To solve the above-mentioned technical problems, the present invention provides a thermal insulation air conditioner, its control method, storage medium, and electronic device, wherein the thermal insulation air conditioner is applied in a greenhouse, and the thermal insulation air conditioner includes:

[0007] A gas-insulated chamber is located at the top of the greenhouse, and the inner or outer walls of the gas-insulated chamber are covered with thermal insulation material;

[0008] The first air vent is located in the upper space of the greenhouse and connects to the gas isolation chamber. The first air vent is opened during the daytime to allow high-temperature gas to enter the gas isolation chamber, closed during the transition period to keep the high-temperature gas inside the gas isolation chamber, and opened at night to allow the high-temperature gas to escape from the first air vent.

[0009] The second air vent is located in the bottom space of the greenhouse. The second air vent is connected to the first air vent through a first air duct, and an air circulation fan is installed in the first air duct.

[0010] Furthermore, the insulated air conditioner also includes:

[0011] A carbon dioxide generator, the outlet of which is connected to the second air vent, is used to generate carbon dioxide, which is then output to the greenhouse through the second air vent.

[0012] Furthermore, the insulated air conditioner also includes:

[0013] The first control valve is installed on the pipeline between the carbon dioxide generator and the second air outlet.

[0014] Furthermore, the insulated air conditioner also includes:

[0015] An air separation device has its inlet connected to air and its outlet connected to the inlet of an oxygen storage device, the inlet of a carbon dioxide storage device, and the inlet of a waste gas recovery device, respectively.

[0016] The carbon dioxide storage device has its outlet connected to the first air vent and the carbon dioxide generator, respectively.

[0017] The third air vent is located in the central space of the greenhouse, and the outlet of the oxygen storage device is connected to the third air vent.

[0018] Furthermore, the insulated air conditioner also includes:

[0019] The second control valve is installed on the pipeline between the outlet end of the oxygen storage device and the third air outlet.

[0020] Furthermore, the heat preservation air conditioner also includes a compressor, which forms a circulation system with a condenser, an electronic expansion valve, and an evaporator. The condenser is disposed in a second air duct, which is connected to a fourth air outlet, which is disposed in the greenhouse.

[0021] Furthermore, the insulated air conditioner also includes:

[0022] A humidifier is installed inside the greenhouse.

[0023] Furthermore, the insulated air conditioner also includes:

[0024] A carbon dioxide concentration sensor is installed inside the greenhouse.

[0025] An oxygen concentration sensor is installed inside the greenhouse.

[0026] A humidity sensor is installed inside the greenhouse.

[0027] Furthermore, the insulated air conditioner also includes:

[0028] A pressure sensor is installed inside the greenhouse;

[0029] A pressure balancing pipeline is installed between the greenhouse and the atmosphere;

[0030] A pressure balancing valve is installed on the pressure balancing pipeline.

[0031] The present invention also provides a control method applied to the above-mentioned thermal insulation air conditioner, the control method comprising:

[0032] Determine the current time period; wherein, the current time period includes daytime, transitional period, and nighttime;

[0033] The opening and closing of the first air vent is controlled according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber.

[0034] Furthermore, controlling the opening and closing of the first air vent according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber, includes:

[0035] If the current time period is daytime, the first air vent is opened to allow high-temperature gas to enter the gas isolation chamber;

[0036] If the current time period is a transition period, the first air vent is closed to seal the high-temperature gas inside the gas isolation chamber.

[0037] If the current time period is nighttime, the first air vent is opened to allow the high-temperature gas to escape from the first air vent.

[0038] Furthermore, if the current time period is nighttime, after controlling the first air vent to open and allowing the high-temperature gas to escape from the first air vent, the method further includes:

[0039] Control the second air vent to open, and simultaneously control the air circulation fan in the first air duct to open.

[0040] Furthermore, the method also includes:

[0041] Determine the target temperature inside the greenhouse, and determine the target carbon dioxide concentration and target humidity based on the actual temperature inside the greenhouse;

[0042] When the target carbon dioxide concentration is greater than the actual carbon dioxide concentration, the first control valve on the pipeline between the carbon dioxide generator and the second air outlet is opened. Then, based on the target carbon dioxide concentration and the actual carbon dioxide concentration in the greenhouse, the Kalman filter algorithm is used to control the rate at which the carbon dioxide generator produces carbon dioxide.

[0043] When the target humidity is greater than the actual humidity, the humidity adjustment amount is controlled by a proportional-integral algorithm based on the target humidity and the actual humidity in the greenhouse to control the humidifier's setting.

[0044] The frequency of the compressor is controlled using fuzzy control algorithm and proportional-integral control algorithm based on the actual carbon dioxide concentration, the actual humidity, the actual temperature inside the greenhouse, and the target temperature.

[0045] Furthermore, based on the target carbon dioxide concentration and the actual carbon dioxide concentration in the greenhouse, a Kalman filter algorithm is used to control the rate at which the carbon dioxide generator produces carbon dioxide, including:

[0046] Based on the actual carbon dioxide concentration at the current sampling time and the previous sampling time, the Kalman filter algorithm is used to predict the actual carbon dioxide concentration at the next time.

[0047] The carbon dioxide generation rate is controlled based on the target carbon dioxide concentration, the predicted actual carbon dioxide concentration, and the rate at which the carbon dioxide generator produces carbon dioxide.

[0048] Further, based on the target carbon dioxide concentration and the predicted actual carbon dioxide concentration, the rate at which the carbon dioxide generating device produces carbon dioxide is controlled includes:

[0049] Determine whether the predicted actual carbon dioxide concentration is greater than the target carbon dioxide concentration;

[0050] If so, then control the carbon dioxide generator to stop producing carbon dioxide;

[0051] If not, determine whether the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration is greater than or equal to a first preset threshold; if yes, control the carbon dioxide generator to produce carbon dioxide at a first preset speed; if no, control the carbon dioxide generator to produce carbon dioxide at a second preset speed; wherein the second preset speed is greater than the first preset speed.

[0052] Furthermore, after determining that the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration is greater than or equal to a first preset threshold, the method further includes:

[0053] The first control valve on the pipeline between the carbon dioxide generator and the second air outlet is closed.

[0054] Furthermore, the control method further includes:

[0055] Determine whether the oxygen concentration inside the greenhouse is lower than a preset threshold;

[0056] If so, the second valve on the pipeline between the outlet of the oxygen storage device and the third air outlet will be opened.

[0057] Furthermore, the control method also includes:

[0058] Determine whether the difference between the pressure inside the greenhouse and the atmospheric pressure is within a preset range;

[0059] If so, the pressure balancing valve on the pressure balancing pipeline between the greenhouse and the atmosphere remains closed;

[0060] If not, then control the pressure balancing valve to open.

[0061] The present invention also provides a computer-readable storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the above-described control method.

[0062] The present invention also provides an electronic device, comprising:

[0063] One or more processors;

[0064] A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the above-described control method.

[0065] By applying the technical solution of this invention, a gas-isolated chamber is set at the top of the greenhouse, and the inner or outer wall of the gas-isolated chamber is covered with heat-insulating material. A first air vent is set in the upper space of the greenhouse, which is connected to the gas-isolated chamber. The first air vent is opened during the daytime to allow high-temperature gas to enter the gas-isolated chamber, and closed during the transition period to keep the high-temperature gas sealed in the gas-isolated chamber. It is opened again at night to allow the high-temperature gas to escape from the first air vent and be released into the greenhouse, thereby increasing the temperature inside the greenhouse. This enables the recovery and utilization of heat energy, which is used to heat the greenhouse at night, avoiding energy waste. At the same time, since hot air accumulates in the upper space of the greenhouse, the temperature in the lower part of the greenhouse rises more slowly. A second air vent is set in the bottom space of the greenhouse, which is connected to the first air vent through a first air duct. An air circulation fan is installed in the first air duct to guide the air from the first air vent to the second air vent, so that the hot air is blown out from the bottom space of the greenhouse and flows upward, ensuring that the temperature of the entire greenhouse rises evenly. Attached Figure Description

[0066] Figure 1 This is a structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention;

[0067] Figure 2 This is a partial structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention;

[0068] Figure 3 This is a partial structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention;

[0069] Figure 4 A flowchart of a control method according to an embodiment of the present invention;

[0070] Figure 5 This is a control principle diagram according to an embodiment of the present invention;

[0071] Figure 6 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0073] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0074] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0075] It should be understood that although the terms first, second, third, etc., may be used to describe air vents in the embodiments of the present invention, these air vents should not be limited to these terms. These terms are only used to distinguish air vents in different locations. For example, without departing from the scope of the embodiments of the present invention, a first air vent may also be referred to as a second air vent, and similarly, a second air vent may also be referred to as a first air vent.

[0076] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0077] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0078] The optional embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0079] Example 1

[0080] In current greenhouses, the temperature is low at night, which increases the load on heat exchange equipment and increases energy consumption. Meanwhile, the solar radiation heat is high during the day, and the temperature inside the greenhouse is high, even higher than expected. This part of the heat energy cannot be effectively collected and utilized, resulting in energy waste.

[0081] To address the problem of large daytime and nighttime temperature differences in greenhouses in existing technologies, which leads to ineffective collection and utilization of daytime solar radiation heat and resulting in energy waste, this embodiment provides a heat-insulating air conditioner for use in greenhouses. Figure 1 This is a structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, the heat-insulating air conditioner includes: a gas-isolated chamber 1, located at the top of the greenhouse, with its inner or outer walls covered with insulation material; and a first air vent 2, located in the upper space inside the greenhouse, connected to the gas-isolated chamber 1. The first air vent is opened during the daytime to allow high-temperature gas to enter the gas-isolated chamber, closed during the transition period to confine the high-temperature gas within the chamber, and opened at nighttime to allow the high-temperature gas to escape from the first air vent and be released into the greenhouse. The daytime period can be calculated from sunrise; the transition period can be calculated from the moment the temperature begins to decrease throughout the day until the temperature drops to a preset temperature, at which point the nighttime period begins, and at sunrise again, the daytime period of the next day begins.

[0082] The second air vent, number 3, is located in the bottom space inside the greenhouse. Figure 2 This is a partial structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention, as shown below. Figure 2 As shown, the second air outlet 3 is connected to the first air outlet 2 through the first air duct 4, and an air circulation fan 5 is installed in the first air duct 4.

[0083] In this embodiment of the heat-insulating air conditioner, a gas isolation chamber 1 is set at the top of the greenhouse, and the inner or outer walls of the gas isolation chamber are covered with heat-insulating material. A first air vent 2 is set in the upper space of the greenhouse, which is connected to the gas isolation chamber 1. The first air vent 2 is opened during the daytime to allow high-temperature gas to enter the gas isolation chamber, and is closed during the transition period to keep the high-temperature gas sealed in the gas isolation chamber. It is opened again at night to allow the high-temperature gas to escape from the first air vent 2 and be released into the greenhouse, thereby increasing the temperature inside the greenhouse. This enables the recovery and utilization of heat energy, which is used to heat the greenhouse at night, avoiding energy waste. At the same time, since hot air accumulates in the upper space of the greenhouse, the temperature in the lower part of the greenhouse rises more slowly. A second air vent 3 is set in the bottom space of the greenhouse, which is connected to the first air vent 2 through a first air duct 4. An air circulation fan 5 is set in the first air duct 4 to guide the air from the first air vent 2 to the second air vent 3, so that the hot air is blown out from the bottom space of the greenhouse and flows upward, which can ensure that the temperature of the entire greenhouse rises evenly.

[0084] Carbon dioxide is a raw material for plant photosynthesis and also a greenhouse gas, helping to maintain and increase the temperature inside greenhouses. Therefore, the concentration of carbon dioxide has a significant impact on greenhouse temperature and plant growth. To regulate the carbon dioxide concentration inside greenhouses, as mentioned above... Figure 2As shown, the heat preservation air conditioner also includes a carbon dioxide generator 6, whose outlet end is connected to the second air outlet 3, for generating carbon dioxide, which is then output to the greenhouse through the second air outlet 3. Utilizing the high density of carbon dioxide gas, the temperature at the bottom of the greenhouse can be maintained, ensuring that the vegetation at the bottom maintains a constant temperature.

[0085] In order to control the direction and flow rate of carbon dioxide gas, the above-mentioned thermal air conditioner also includes: a first control valve V1, which is installed on the pipeline between the carbon dioxide generator and the second air outlet.

[0086] Since there is some carbon dioxide and oxygen in the air, if the oxygen content in the greenhouse is too low, it will cause the plants to undergo anaerobic respiration and consume plant nutrients. In order to avoid the above phenomenon, it is necessary to keep the oxygen concentration in the greenhouse at a certain level. In order to make full use of the carbon dioxide and oxygen in the air, the above-mentioned heat preservation air conditioner also includes: an air separation device 7, whose inlet end is connected to the air, and whose outlet end is connected to the inlet end of the oxygen storage device 8, the inlet end of the carbon dioxide storage device 9 and the inlet end of the waste gas recovery device 10 respectively.

[0087] A carbon dioxide storage device 9 has its outlet connected to both a first air vent 2 and a carbon dioxide generator 6. Carbon dioxide separated from the air and generated by the carbon dioxide generator 6 are collected within the latter. A third air vent 11 is located in the central space of the greenhouse, and the outlet of the oxygen storage device 8 is connected to the third air vent 11 for injecting oxygen into the greenhouse. A three-way valve is installed between the outlet of the carbon dioxide storage device 9 and the inlet of the carbon dioxide generator 6. The third port of the three-way valve is connected to the first air vent 2 for supplying carbon dioxide to the first air vent 2.

[0088] In order to make the direction and flow of oxygen controllable, the above-mentioned thermal air conditioner also includes: a second control valve V2, which is installed on the pipeline between the outlet end of the oxygen storage device 8 and the third air outlet 11.

[0089] The high-temperature gas collected during the day is insufficient to meet the nighttime temperature requirements, necessitating the installation of a heating system. Figure 3 This is a partial structural diagram of a thermal insulation air conditioner according to an embodiment of the present invention, as shown below. Figure 3 As shown, the above-mentioned heat preservation air conditioner also includes a compressor 12. The compressor 12, condenser 13, electronic expansion valve EXV and evaporator 14 form a circulation system. The condenser 13 is located in the second air duct 15. The second air duct 15 is connected to the fourth air outlet 16. The fourth air outlet 16 is located in the greenhouse.

[0090] Plants require a lot of water to grow, so the humidity inside the greenhouse needs to be kept high. In order to regulate the humidity inside the greenhouse, the heat preservation air conditioner also includes a humidifier (not shown in the figure), which is installed inside the greenhouse.

[0091] To separately detect carbon dioxide concentration, oxygen concentration, and humidity, the aforementioned insulated air conditioner also includes: a carbon dioxide concentration sensor 17, installed inside the greenhouse; an oxygen concentration sensor 18, installed inside the greenhouse; a humidity sensor 19, installed inside the greenhouse; and a temperature sensor 20, installed inside the greenhouse. In practice, to improve detection accuracy, multiple sensors of each type can be set, and the average of multiple detection values ​​is taken.

[0092] To ensure the normal operation of the greenhouse, the pressure inside the greenhouse cannot be too high or too low. Therefore, such as Figure 2 As shown, the above-mentioned heat preservation air conditioner also includes: a pressure sensor P, which is installed inside the greenhouse; a pressure balancing pipeline 21, which is installed between the greenhouse and the atmosphere; and a pressure balancing valve V3, which is installed on the pressure balancing pipeline 21.

[0093] The heating air conditioner in this embodiment has a three-section air outlet structure, such as... Figure 1 As shown, a gas isolation chamber 1 is set up at the top of the greenhouse, which can store the high-temperature gas generated during the day in the upper layer and isolate it from the lower layer. At night, the temperature inside the greenhouse is increased by airing through the first air outlet at the top and the second air outlet at the bottom. Carbon dioxide and oxygen are supplied through the second air outlet at the bottom and the third air outlet in the middle, respectively. Taking advantage of the high density of carbon dioxide, the temperature at the bottom of the greenhouse can be maintained, ensuring that the vegetation at the bottom maintains a constant temperature.

[0094] Example 2

[0095] This embodiment provides a control method applied to the thermal insulation air conditioner described in the above embodiment. Figure 4 A flowchart of a control method according to an embodiment of the present invention is shown below. Figure 4 As shown, the control method includes:

[0096] S101, determine the current time period; wherein, the current time period includes daytime, transition period and nighttime.

[0097] The daytime period can be calculated from sunrise; the transition period can be calculated from the moment the temperature begins to drop throughout the day, until the temperature drops to a preset level, at which point the nighttime period begins, and the next daytime period begins at sunrise.

[0098] S102 controls the opening and closing of the first air vent according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber.

[0099] The control method of this embodiment first determines the current time period, controls the opening and closing of the first air vent according to the current time period, and then controls the gas flow direction of the gas isolation chamber. It can collect high-temperature gas when the temperature is high and isolate and store it to avoid heat loss. When the temperature is low, it releases high-temperature gas to increase the temperature of the greenhouse, realizing the recovery and utilization of energy. The recovered heat energy is used to heat the greenhouse at night and avoid energy waste.

[0100] To achieve precise control over the release time of high-temperature gas and avoid energy waste, the opening and closing of the first vent is controlled according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber. This includes: if the current time period is daytime, the first vent is opened to allow high-temperature gas to enter the gas isolation chamber; if the current time period is transitional, the first vent is closed to confine the high-temperature gas within the gas isolation chamber; if the current time period is nighttime, the first vent is opened to allow the high-temperature gas to escape from the first vent.

[0101] Since hot air accumulates in the upper part of the greenhouse, the temperature rises more slowly in the lower part. A second air vent is installed in the bottom space of the greenhouse. The second air vent is connected to the first air vent through a first air duct. An air circulation fan is installed in the first air duct. The air circulation fan directs the air from the first air vent to the second air vent, causing the hot air to be blown out from the bottom space of the greenhouse and flow upward, which can ensure that the temperature of the entire greenhouse rises evenly. Therefore, if the current time period is nighttime, the first air vent is opened to allow the high-temperature gas to escape from the first air vent. The above control method also includes: opening the second air vent and simultaneously opening the air circulation fan in the first air duct.

[0102] To adjust the carbon dioxide concentration, humidity, and temperature within the greenhouse separately, the aforementioned control method further includes: determining the target temperature within the greenhouse, and determining the target carbon dioxide concentration (C0) and target humidity based on the actual temperature inside the greenhouse; different carbon dioxide and water vapor ratios will produce different heating effects. Increased carbon dioxide concentration creates a greenhouse effect, improving heat preservation or heating. When humidity is low or the air is completely dry, only air heating is needed; however, when air humidity is high, in addition to heating the air, the moisture in the air must also be heated. Due to water's high specific heat capacity, higher humidity results in higher heating energy consumption. At lower temperatures, temperature requirements are the primary consideration. To improve heat preservation or heating, the carbon dioxide concentration should be increased while the water vapor ratio should be decreased. At higher temperatures, humidity requirements can be considered, and the water vapor ratio can be appropriately increased. Therefore, the heating effect under different carbon dioxide concentrations and humidity can be tested in advance. By recording the carbon dioxide concentration and humidity at different temperatures to achieve the optimal heating effect or the fastest heating rate, the correlation between temperature and carbon dioxide concentration / humidity can be obtained and stored in the program. Based on this correlation, the target carbon dioxide concentration (C0) and target humidity can be determined.

[0103] Figure 5 This is a control principle diagram according to an embodiment of the present invention, such as... Figure 5 As shown, when the target carbon dioxide concentration C0 is greater than the actual carbon dioxide concentration, the first control valve on the pipeline between the carbon dioxide generator and the second air outlet is opened. Then, based on the target carbon dioxide concentration C0 and the actual carbon dioxide concentration in the greenhouse, a Kalman filter algorithm is used to control the rate at which the carbon dioxide generator produces carbon dioxide. Specifically, controlling the rate at which the carbon dioxide generator produces carbon dioxide based on the target carbon dioxide concentration C0 and the actual carbon dioxide concentration in the greenhouse includes: predicting the actual carbon dioxide concentration at the next sampling moment based on the actual carbon dioxide concentration at the current sampling moment and the previous sampling moment using the Kalman filter algorithm; and controlling the rate at which the carbon dioxide generator produces carbon dioxide based on the target carbon dioxide concentration C0 and the predicted actual carbon dioxide concentration. The Kalman filter model in this embodiment is as follows:

[0104]

[0105] Where Cm(t) is the predicted carbon dioxide concentration at time t, Cm(t-1) is the predicted carbon dioxide concentration at time t-1, and the initial Cm(t) is given by the system, i.e., the detection value of the carbon dioxide sensor. B(t) is the prediction error at time t, B(t-1) is the prediction error at time t-1, B(t-2) is the prediction error at time t-2, Kg(t) is the Kalman gain at time t, Kg(t-1) is the Kalman gain at time t-1, and M is the sensor error. Z(t) represents the system measurement value at time t, H is the linear transformation function, and V(t) is the measurement noise at time t, assumed to be zero-mean Gaussian white noise. Then, by continuously calculating according to the above formula, the state value that best fits the current conditions can be recursively obtained. This model, given only the initial carbon dioxide concentration prediction error and the predicted carbon dioxide concentration value, can iteratively calculate the carbon dioxide concentration value for the next moment. It then activates the carbon dioxide generator via a control loop. The generator determines its carbon dioxide production rate based on the difference between the Kalman filter prediction and the set concentration. If the difference is large, the generator produces carbon dioxide at its maximum rate; conversely, if the difference is small, the production rate is minimized. An indoor carbon dioxide sensor monitors the indoor carbon dioxide concentration at regular intervals. After the generator has been producing carbon dioxide for a period, the sensor's current observation is updated, and the difference between the predicted and set values ​​is recalculated to further determine the carbon dioxide production rate.

[0106] Specifically, based on the target carbon dioxide concentration C0, the predicted actual carbon dioxide concentration, and the control of the carbon dioxide generator's carbon dioxide production rate, the process includes: determining whether the predicted actual carbon dioxide concentration is greater than the target carbon dioxide concentration C0; if yes, controlling the carbon dioxide generator to stop producing carbon dioxide; if no, determining whether the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration C0 is greater than or equal to a first preset threshold, wherein the first preset threshold is less than the target carbon dioxide concentration C0, and in this embodiment, the first preset threshold can be set to 0.85; if yes, controlling the carbon dioxide generator to produce carbon dioxide at a first preset rate; if no, controlling the carbon dioxide generator to produce carbon dioxide at a second preset rate, wherein the second preset rate is greater than the first preset rate.

[0107] When the sensor detects that the indoor carbon dioxide concentration is lower than the target carbon dioxide concentration, the system starts the carbon dioxide generator. At this time, the actual carbon dioxide concentration detected by the carbon dioxide concentration sensor is used as the initial value of the Kalman calorimeter. The system iterates continuously, and each iteration yields a predicted carbon dioxide concentration. If the predicted carbon dioxide concentration does not reach the normal standard, the system checks whether the predicted carbon dioxide concentration is greater than the target carbon dioxide concentration C0, between C0 and 0.85C0, or less than 0.85C0. Based on the comparison between the predicted carbon dioxide concentration and the range, the corresponding carbon dioxide generation mode is selected, and then the next iteration begins until the predicted carbon dioxide concentration reaches the set standard.

[0108] When the predicted carbon dioxide concentration is greater than the preset value C0, the carbon dioxide generator is turned off; when the predicted carbon dioxide concentration is between C0 and 0.85C0, it enters the slow carbon dioxide production mode; when the predicted carbon dioxide concentration is less than 0.85C0, it enters the fast carbon dioxide production mode.

[0109] Once the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration C0 is determined to be greater than or equal to the first preset threshold, it indicates that the carbon dioxide concentration has reached the target value, and the first control valve on the pipeline between the carbon dioxide generator and the second air outlet is closed.

[0110] like Figure 4 As shown, when the target humidity is greater than the actual humidity, the humidity adjustment amount is controlled by a proportional-integral algorithm based on the target humidity and the actual humidity in the greenhouse to control the humidifier's setting.

[0111] As mentioned above, the thermal insulation air conditioner of this invention also includes a heating circulation system. This system utilizes a compressor to pressurize the refrigerant, transforming it into a high-temperature, high-pressure gas. After heat exchange, the gas returns to a low-temperature, low-pressure liquid. This process is repeated to generate heat. Since higher carbon dioxide concentrations result in better insulation, while higher humidity leads to slower heating, both carbon dioxide concentration and humidity affect temperature. Therefore, when using a compressor for heating, the concentration of carbon dioxide and humidity must be considered. Thus, as... Figure 4As shown, based on the actual carbon dioxide concentration, actual humidity, actual temperature inside the greenhouse, and target temperature, a fuzzy control algorithm and a proportional-integral (PI) control algorithm are used to control the compressor frequency. Controlling the compressor frequency can increase heating capacity. Fuzzy control is performed using carbon dioxide concentration C, humidity H, the difference between the actual and target temperatures e, and the error rate Δe / Δt, providing parameters ΔKp, ΔKi, and ΔKd to provide subsequent optimization parameters for the compressor's PID controller. Δe: the difference between the target and actual temperatures; Δt: the time interval between two actual temperature measurements; Kp: proportional gain; Ki: integral gain; Kd: derivative gain; ΔKp: change in proportional gain; ΔKi: change in integral gain; ΔKd: change in derivative gain.

[0112] Fuzzy control algorithms are intelligent control methods based on fuzzy set theory, fuzzy linguistic variables, and fuzzy logic reasoning. By mimicking human fuzzy reasoning and decision-making processes, it transforms the experience of operators or experts into fuzzy rules, then fuzzifies real-time signals as input to these rules to complete fuzzy reasoning, and finally applies the reasoning results to the actuator.

[0113] The basic process of a fuzzy control algorithm includes the following steps: Fuzzification: Converting the precise input signal into a fuzzy set. This involves defining the basic universes of discourse for the input and output, and mapping these universes to fuzzy subset universes. For example, deviations in temperature control can be mapped to different levels of fuzzy subset universes, such as negative large (NB), negative small (NS), zero (O), positive small (PS), and positive large (PB). Establishing Fuzzy Control Rules: Based on expert experience or operator operating patterns, a series of fuzzy control rules are established. These rules are usually expressed in the form of "if-then" statements, such as: "If the temperature deviation is large, increase the compressor frequency." Finding Fuzzy Relations: The fuzzy relations are obtained by calculating the intersection and union of the input variables and the fuzzy rules. This process involves the use of membership functions, which describe the degree to which a precise value belongs to a certain fuzzy set. Fuzzy Decision: The output of the fuzzy controller is a synthesis of the error vector and the fuzzy relations. This process involves converting the output of the fuzzy rules into a specific control quantity. Defuzzification of the Control Quantity: Finally, the result of the fuzzy decision is converted into a precise control quantity, which is usually achieved through the centroid method or other methods.

[0114] If the oxygen content in the greenhouse is too low, it will cause the plants to undergo anaerobic respiration and consume plant nutrients. In order to avoid the above phenomenon, it is necessary to maintain the oxygen concentration in the greenhouse at a certain level. Therefore, the above control method also includes: judging whether the oxygen concentration in the greenhouse is lower than a preset threshold; if so, controlling the second valve on the pipeline between the outlet end of the oxygen storage device and the third air outlet to open.

[0115] To ensure the normal operation of the greenhouse, the pressure inside the greenhouse must not be too high or too low. The control method further includes: determining whether the difference between the pressure inside the greenhouse and the atmospheric pressure is within a preset range; if so, controlling the pressure balancing valve on the pressure balancing pipeline between the greenhouse and the atmosphere to remain closed; if not, controlling the pressure balancing valve to open.

[0116] Example 3

[0117] This embodiment provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control method of the above embodiment.

[0118] Example 4

[0119] This embodiment provides an electronic device, including:

[0120] One or more processors;

[0121] A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the control method of the above embodiments.

[0122] Figure 6 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of the present invention, such as... Figure 6 As shown, the electronic device includes:

[0123] One or more processors 610 and memory 620, Figure 6 Take the 610 processor as an example.

[0124] The aforementioned electronic device may further include: an input device 630 and an output device 640.

[0125] The processor 610, memory 620, input device 630, and output device 640 can be connected via a bus or other means. Figure 6 Taking the example of a connection between China and Israel via a bus.

[0126] The memory 620, as a non-volatile computer-readable storage medium, can be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as the program instructions / modules corresponding to the control method in this embodiment of the invention. The processor 610 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions, and modules stored in the memory 620, thereby implementing the above-described method embodiments.

[0127] The memory 620 may include a program storage area and a data storage area, wherein the program storage area may store application programs required for operating the device and at least one function; and the data storage area may store data created according to the use of the control method, etc. Furthermore, the memory 620 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0128] Input device 630 can receive input digital or character information, and generate key signal inputs related to user settings and function control of the electronic device. Output device 640 may include display devices such as a display screen.

[0129] The one or more modules are stored in the memory 620, and when executed by the one or more processors 610, they execute the control method in any of the above method embodiments.

[0130] The aforementioned electronic device product can execute the method provided in the embodiments of the present invention, and has the corresponding functional modules and beneficial effects for executing the method. Technical details not described in detail in this embodiment can be found in the method provided in the embodiments of the present invention.

[0131] The electronic devices of this invention exist in various forms, including but not limited to:

[0132] (1) Mobile communication devices: These devices are characterized by their mobile communication capabilities and primarily aim to provide voice and data communication. These terminals include: smartphones (e.g., iPhones), multimedia phones, feature phones, and low-end phones, etc.

[0133] (2) Ultra-mobile personal computer devices: These devices fall under the category of personal computers, possessing computing and processing capabilities, and generally also have mobile internet access features. These terminals include PDAs, MIDs, and UMPCs, such as the iPad.

[0134] (3) Portable entertainment devices: These devices can display and play multimedia content. This category includes: audio and video players (such as iPods), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

[0135] (4) Server: A device that provides computing services. The components of a server include a processor, hard disk, memory, device bus, etc. Servers are similar to general computer architectures, but because they need to provide highly reliable services, they have higher requirements in terms of processing power, stability, reliability, security, scalability, and manageability.

[0136] (5) Other electronic devices with data interaction functions, such as televisions and in-vehicle screens.

[0137] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0138] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat-insulating air conditioner, used in a greenhouse, characterized in that, The heat preservation air conditioner includes: A gas-insulated chamber is located at the top of the greenhouse, and the inner or outer walls of the gas-insulated chamber are covered with thermal insulation material; The first air vent is located in the upper space of the greenhouse and connects to the gas isolation chamber. The first air vent is opened during the daytime to allow high-temperature gas to enter the gas isolation chamber, closed during the transition period to keep the high-temperature gas inside the gas isolation chamber, and opened at night to allow the high-temperature gas to escape from the first air vent. The second air vent is located in the bottom space of the greenhouse. The second air vent is connected to the first air vent through a first air duct. An air circulation fan is installed in the first air duct. A carbon dioxide generator, the outlet of which is connected to the second air vent, is used to generate carbon dioxide and output it into the greenhouse through the second air vent. An air separation device has its inlet connected to air and its outlet connected to the inlet of an oxygen storage device, the inlet of a carbon dioxide storage device, and the inlet of a waste gas recovery device, respectively. The carbon dioxide storage device has its outlet connected to the first air vent and the carbon dioxide generator, respectively. The third air vent is located in the central space of the greenhouse, and the outlet of the oxygen storage device is connected to the third air vent.

2. The thermal insulation air conditioner according to claim 1, characterized in that, The heat-insulating air conditioner also includes: The first control valve is installed on the pipeline between the carbon dioxide generator and the second air outlet.

3. The thermal insulation air conditioner according to claim 1, characterized in that, The heat-insulating air conditioner also includes: The second control valve is installed on the pipeline between the outlet end of the oxygen storage device and the third air outlet.

4. The thermal insulation air conditioner according to claim 1, characterized in that, The heat-insulating air conditioner also includes: A humidifier is installed inside the greenhouse.

5. The thermal insulation air conditioner according to claim 1, characterized in that, The heat-insulating air conditioner also includes: A carbon dioxide concentration sensor is installed inside the greenhouse. An oxygen concentration sensor is installed inside the greenhouse. A humidity sensor is installed inside the greenhouse.

6. The thermal insulation air conditioner according to claim 1, characterized in that, The heat-insulating air conditioner also includes: A pressure sensor is installed inside the greenhouse; A pressure balancing pipeline is installed between the greenhouse and the atmosphere; A pressure balancing valve is installed on the pressure balancing pipeline.

7. A control method applied to a thermal insulation air conditioner according to any one of claims 1 to 6, characterized in that, The control method includes: Determine the current time period; wherein, the current time period includes daytime, transitional period, and nighttime; The opening and closing of the first air vent is controlled according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber.

8. The control method according to claim 7, characterized in that, Controlling the opening and closing of the first air vent according to the current time period, thereby controlling the gas flow direction in the gas isolation chamber, includes: If the current time period is daytime, the first air vent is opened to allow high-temperature gas to enter the gas isolation chamber; If the current time period is a transition period, the first air vent is closed to seal the high-temperature gas inside the gas isolation chamber. If the current time period is nighttime, the first air vent is opened to allow the high-temperature gas to escape from the first air vent.

9. The control method according to claim 8, characterized in that, If the current time period is nighttime, the method further includes controlling the first air vent to open, allowing the high-temperature gas to escape from the first air vent, and then: Control the second air vent to open, and simultaneously control the air circulation fan in the first air duct to open.

10. The control method according to claim 7, characterized in that, The method further includes: Determine the target temperature inside the greenhouse, and determine the target carbon dioxide concentration and target humidity based on the actual temperature inside the greenhouse; When the target carbon dioxide concentration is greater than the actual carbon dioxide concentration, the first control valve on the pipeline between the carbon dioxide generator and the second air outlet is opened. Then, based on the target carbon dioxide concentration and the actual carbon dioxide concentration in the greenhouse, the Kalman filter algorithm is used to control the rate at which the carbon dioxide generator produces carbon dioxide. When the target humidity is greater than the actual humidity, the humidity adjustment amount is controlled by a proportional-integral algorithm based on the target humidity and the actual humidity in the greenhouse to control the humidifier's setting. Based on the actual carbon dioxide concentration, the actual humidity, the actual temperature inside the greenhouse, and the target temperature, a fuzzy control algorithm and a proportional-integral control algorithm are used to control the frequency of the compressor of the heat preservation air conditioner; wherein, the compressor, condenser, electronic expansion valve, and evaporator form a circulation system, the condenser is located in a second air duct, the second air duct is connected to a fourth air outlet, and the fourth air outlet is located inside the greenhouse.

11. The control method according to claim 10, characterized in that, Based on the target carbon dioxide concentration and the actual carbon dioxide concentration in the greenhouse, a Kalman filter algorithm is used to control the rate at which the carbon dioxide generator produces carbon dioxide, including: Based on the actual carbon dioxide concentration at the current sampling time and the previous sampling time, the Kalman filter algorithm is used to predict the actual carbon dioxide concentration at the next time. The carbon dioxide generation rate is controlled based on the target carbon dioxide concentration, the predicted actual carbon dioxide concentration, and the rate at which the carbon dioxide generator produces carbon dioxide.

12. The control method according to claim 11, characterized in that, Based on the target carbon dioxide concentration and the predicted actual carbon dioxide concentration, and controlling the rate at which the carbon dioxide generating device produces carbon dioxide, the following includes: Determine whether the predicted actual carbon dioxide concentration is greater than the target carbon dioxide concentration; If so, then control the carbon dioxide generator to stop producing carbon dioxide; If not, determine whether the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration is greater than or equal to a first preset threshold; if yes, control the carbon dioxide generator to produce carbon dioxide at a first preset speed; if no, control the carbon dioxide generator to produce carbon dioxide at a second preset speed; wherein the second preset speed is greater than the first preset speed.

13. The control method according to claim 12, characterized in that, After determining that the ratio of the predicted actual carbon dioxide concentration to the target carbon dioxide concentration is greater than or equal to a first preset threshold, the method further includes: The first control valve on the pipeline between the carbon dioxide generator and the second air outlet is closed.

14. The control method according to claim 7, characterized in that, The control method further includes: Determine whether the oxygen concentration inside the greenhouse is lower than a preset threshold; If so, the second valve on the pipeline between the outlet of the oxygen storage device and the third air outlet will be opened.

15. The control method according to claim 7, characterized in that, The control method further includes: Determine whether the difference between the pressure inside the greenhouse and the atmospheric pressure is within a preset range; If so, the pressure balancing valve on the pressure balancing pipeline between the greenhouse and the atmosphere remains closed; If not, then control the pressure balancing valve to open.

16. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 7 to 15.

17. An electronic device, characterized in that, include: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the method as described in any one of claims 7 to 15.

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