Thermal comfort environment chamber and multi-field coupling control system thereof

Abstract

The invention relates to the technical field of environment multi-field coupling control, in particular to a thermal comfort environment chamber and a multi-field coupling control system thereof, comprising: an environment chamber which is comprehensively regulated and controlled by a temperature field, a humidity field, an airflow field and an air quality field, and simulates the environment chamber; the multi-field coupling control unit comprehensively and dynamically regulates and controls the environment in the environment chamber by integrating a temperature field, a humidity field, an airflow field and an air quality field on the basis of a multi-dimensional thermal comfort comprehensive regulation and control algorithm; the temperature and humidity control unit calculates a temperature field PMV value and a humidity field PMV value based on a temperature gradient control equation and a humidity control equation, and regulates and controls temperature and humidity; the airflow adjusting unit calculates an airflow field PMV value based on an airflow control equation and adjusts the airflow speed; the air quality control unit calculates an air quality field PMV value based on a carbon dioxide change equation and adjusts the carbon dioxide concentration. According to the thermal comfort environmental chamber and the multi-field coupling control system thereof, physical field coupling and environmental regulation are realized through a multi-dimensional thermal comfort comprehensive regulation algorithm.

Description

Technical Field

[0001] The invention relates to the technical field of environmental multi-field coupling control, in particular to a thermal comfort environment cabin and a multi-field coupling control system thereof. Background Art

[0002] The thermal comfort environment cabin and its multi-field coupling control system are designed to optimize human thermal comfort and improve energy efficiency. Through a multi-dimensional thermal comfort comprehensive control algorithm, it controls the dynamic balance of temperature field, humidity field, airflow field and air quality field, and provides personalized thermal comfort experience and precise environmental control under different environmental conditions.

[0003] The existing thermal comfort environment chamber and its multi-field coupling control system usually cannot efficiently handle the real-time coupling control of multiple field variables at the same time. In addition, since the environment of the environment chamber is affected by multiple factors such as temperature, humidity, airflow and air quality, it will cause mutual coupling and interference between the physical fields, making it difficult to achieve rapid response and precise control, which will lead to problems such as overheating, overcooling or uneven humidity in local areas. Therefore, a thermal comfort environment chamber and its multi-field coupling control system are designed. Summary of the invention

[0004] The object of the present invention is to provide a thermal comfort environment cabin and its multi-field coupling control system to solve the problem raised in the above background technology that the environment of the environment cabin is affected by multiple factors such as temperature, humidity, airflow and air quality, which will cause mutual coupling and interference between various physical fields, making it difficult to achieve rapid response and precise control, and will cause overheating, overcooling or uneven humidity in local areas.

[0005] To achieve the above object, the present invention provides a multi-field coupling control system, comprising: A multi-field coupling control unit, which is based on a multi-dimensional thermal comfort comprehensive control algorithm and integrates temperature field, humidity field, airflow field and air quality field to comprehensively and dynamically control the environment in the environmental cabin; A temperature and humidity control unit, which calculates the temperature field PMV value and the humidity field PMV value based on the temperature gradient control equation and the humidity control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and controls the temperature and humidity of the environmental chamber; An airflow regulating unit, wherein the airflow regulating unit calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the airflow velocity of the environmental cabin; An air quality control unit calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the carbon dioxide concentration in the environmental cabin.

[0006] As a further improvement of the present technical solution, the multi-dimensional thermal comfort comprehensive control algorithm is implemented based on the PMV formula of the Fanger model, which introduces control parameters and control coefficients of the temperature field, humidity field, airflow field and air quality field, and calculates the PMV value to comprehensively control the environment in the environmental cabin.

[0007] As a further improvement of the technical solution, the multi-field coupling control unit is based on a multi-dimensional thermal comfort comprehensive control algorithm, which integrates the temperature field, humidity field, airflow field and air quality field to comprehensively and dynamically control the environment in the environmental cabin. The specific steps are as follows: S2.1, construct the PMV formula of the basic Fanger model; S2.2. The temperature change rate of the environmental chamber is calculated using the temperature gradient control equation, and the PMV formula of the Fanger model is introduced to calculate the PMV value of the temperature field. The temperature and humidity control unit adjusts the temperature of the environmental chamber according to the PMV value of the temperature field. S2.3. The humidity change rate of the environmental chamber is calculated using the humidity control equation, and the PMV formula of the Fanger model is introduced to calculate the PMV value of the humidity field. The temperature and humidity control unit adjusts the humidity of the environmental chamber according to the PMV value of the humidity field. S2.4. Use the airflow control equation to calculate the airflow change rate of the environmental chamber, and introduce the PMV formula of the Fanger model to calculate the PMV value of the airflow field, and the airflow adjustment unit adjusts the airflow velocity of the environmental chamber according to the PMV value of the airflow field; S2.5. Use the carbon dioxide change equation to calculate the carbon dioxide change rate, and introduce the PMV formula of the Fanger model to calculate the PMV value of the air quality field. The air quality control unit adjusts the carbon dioxide concentration in the environmental chamber according to the PMV value of the air quality field.

[0008] As a further improvement of the technical solution, in S2.1, the PMV formula of the basic Fanger model is constructed as follows: ; in, is the basal metabolic rate; is the external mechanical power, which is taken as 0 in this system; is the surface temperature of the clothes; is the mean radiant temperature; is the air temperature; is the water vapor pressure of air; is the clothing coefficient; is the convective heat transfer coefficient.

[0009] As a further improvement of the technical solution, the temperature and humidity control unit uses the temperature gradient control equation and humidity control equation in the multi-dimensional thermal comfort comprehensive control algorithm to calculate the temperature field PMV value and the humidity field PMV value to control the temperature and humidity of the environmental chamber. The specific steps are as follows: S3.1. Calculate the temperature change rate of the environmental chamber using the temperature gradient control equation , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. ; S3.2. Use the humidity control equation to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculating relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field ; S3.3. Adjust the temperature and humidity of the environmental chamber according to the PMV value of the temperature field, the PMV value of the humidity field and the temperature and humidity equipment.

[0010] As a further improvement of the technical solution, the S3.1, using the temperature gradient control equation to calculate the temperature change rate of the environmental chamber , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. , the specific method is as follows: Construct temperature gradient control equation to calculate temperature change rate : ; in, For the cabin Temperature of a temperature sensor; is the target temperature; is the temperature regulation coefficient; is the Laplace operator of the temperature field; is the spatial temperature diffusion coefficient; Calculate effective temperature : ; in, is the weight coefficient of temperature change rate; Calculate the PMV value of the temperature field : ; in, is the effective temperature.

[0011] As a further improvement of the technical solution, in S3.2, the humidity control equation is used to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculate corrected relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field , the specific method is as follows: Constructing humidity control equation to calculate humidity change rate in environmental chamber : ; in, is the humidity adjustment factor; is the target relative humidity; is the current relative humidity; is the coupling coefficient of temperature to humidity change; is the dew point temperature; Calculate corrected relative humidity and corrected water vapor pressure : ; ; in, is the weight coefficient of humidity change rate; The effective temperature Saturated water vapor pressure under Calculate the PMV value of the humidity field : ; in, is the effective temperature; Corrected for water vapor pressure.

[0012] As a further improvement of the technical solution, the airflow adjustment unit calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm and adjusts the airflow velocity of the environmental cabin. The specific method is as follows: S4.1. Calculate the airflow change rate in the environmental chamber using the airflow control equation , calculate the effective air velocity , and according to the effective air flow velocity Calculate the corrected heat transfer coefficient , and the PMV formula of Fanger model is introduced to calculate the PMV value of airflow field , the specific method is as follows: Construct airflow control equation to calculate the airflow change rate in the environmental chamber : ; in, is the current air flow speed; is the target airflow velocity; is the airflow adjustment coefficient; is the local pressure gradient; is the pressure gradient influence coefficient; Effective air flow rate : ; in, is the weight coefficient of airflow change rate; Corrected heat transfer coefficient : ; in, is the corrected heat transfer coefficient; is the empirical coefficient; Calculate the PMV value of the airflow field: ; in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; S4.2. Adjust the airflow velocity in the environmental chamber according to the PMV value of the airflow field and the airflow regulating equipment.

[0013] As a further improvement of the technical solution, the air quality control unit calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm and adjusts the carbon dioxide concentration in the environmental cabin. The specific method is as follows: S5.1. Calculate the rate of change of carbon dioxide using the carbon dioxide change equation , calculate the corrected metabolic rate The PMV formula of Fanger model is introduced to calculate the PMV value of air quality field , the specific method is as follows: Constructing the carbon dioxide change equation to calculate the carbon dioxide change rate : ; in, is the current carbon dioxide concentration; To set a target concentration of carbon dioxide; is the ventilation rate; To control the carbon dioxide variation adjustment coefficient; To control the coupling effect adjustment coefficient of ventilation; Calculate corrected metabolic rate : ; in, is the carbon dioxide change impact coefficient; Calculate the PMV value of the air quality field: ; in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; To correct metabolic rate; S5.2. Adjust the carbon dioxide concentration in the environmental chamber according to the PMV value of the air quality field and the air quality control equipment.

[0014] A thermal comfort environment cabin, which is controlled based on the multi-field coupling control system described above, comprises an environment cabin, which simulates and provides a thermal comfort space environment through comprehensive regulation of temperature field, humidity field, airflow field and air quality field, and comprises a cabin structure module, temperature and humidity equipment, airflow adjustment equipment, air quality control equipment and a terminal touch screen; The cabin structure module uses heat-insulating materials to construct a fully enclosed environment cabin; Temperature and humidity equipment includes heaters, refrigeration systems, humidifiers, dehumidifiers, temperature sensors and humidity sensors, which are used to comprehensively control the temperature and humidity in the thermal comfort environment cabin; The airflow regulating device includes an intelligent fan, ventilation ducts and airflow sensors, which are used to control the flow speed and direction of the airflow in the environmental chamber; The air quality control equipment monitors and adjusts the air quality in the environmental chamber in real time through air purifiers and carbon dioxide sensors; The terminal touch screen allows users to view the environmental status in the environmental chamber in real time and manually adjust the temperature, humidity, airflow and air quality parameters.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the thermal comfort environment cabin and its multi-field coupling control system, based on the multi-dimensional thermal comfort comprehensive control algorithm, the PMV value of each physical field can be dynamically calculated by integrating the temperature field, humidity field, airflow field and air quality field to ensure that the temperature, humidity, airflow and air quality in the environment cabin are always kept within the comfortable range.

[0016] 2. In the thermal comfort environment cabin and its multi-field coupling control system, the real-time feedback control mechanism and the multi-field coupling control equation are used to achieve precise control of the multi-field coupling environment in the environment cabin, ensuring that under different environmental changes, the system can quickly respond and adjust the balance of various physical fields, thereby improving comfort while optimizing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall flow chart of the present invention; The meaning of each number in the figure is: 1. Environmental chamber; 2. Multi-field coupling control unit; 3. Temperature and humidity control unit; 4. Air flow adjustment unit; 5. Air quality control unit. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0019] See also Figure 1 As shown, a multi-field coupling control system is provided, comprising: A multi-field coupling control unit 2, wherein the multi-field coupling control unit 2 is based on a multi-dimensional thermal comfort comprehensive control algorithm, and comprehensively and dynamically controls the environment in the environmental cabin by integrating the temperature field, humidity field, airflow field and air quality field; In this embodiment, the multi-dimensional thermal comfort comprehensive control algorithm is implemented based on the PMV formula of the Fanger model, which introduces the control parameters and control coefficients of the temperature field, humidity field, airflow field and air quality field, and calculates the PMV value to comprehensively control the environment in the environmental cabin.

[0020] In this embodiment, the multi-field coupling control unit 2 is based on a multi-dimensional thermal comfort comprehensive control algorithm, and integrates the temperature field, humidity field, airflow field and air quality field to comprehensively and dynamically control the environment in the environmental cabin. The specific steps are as follows: S2.1, construct the PMV formula of the basic Fanger model; S2.2, using the temperature gradient control equation to calculate the temperature change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the PMV value of the temperature field, and the temperature and humidity control unit 3 adjusts the temperature of the environmental chamber according to the PMV value of the temperature field; S2.3, using the humidity control equation to calculate the humidity change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the humidity field PMV value, and the temperature and humidity control unit 3 adjusts the humidity of the environmental chamber according to the humidity field PMV value; S2.4, using the airflow control equation to calculate the airflow change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the PMV value of the airflow field, and the airflow regulating unit 4 regulates the airflow velocity of the environmental chamber according to the PMV value of the airflow field; S2.5. Use the carbon dioxide change equation to calculate the carbon dioxide change rate, and introduce the PMV formula of the Fanger model to calculate the PMV value of the air quality field, and the air quality control unit 5 adjusts the carbon dioxide concentration in the environmental chamber according to the PMV value of the air quality field.

[0021] In this embodiment S2.1, the PMV formula of the basic Fanger model is constructed as follows: ; in, is the basal metabolic rate; is the external mechanical power, which is taken as 0 in this system; is the surface temperature of the clothes; is the mean radiant temperature; is the air temperature; is the water vapor pressure of air; is the clothing coefficient; is the convective heat transfer coefficient.

[0022] In this embodiment, the PMV formula of the Fanger model is used to evaluate the thermal comfort of the human body under specific environmental conditions. It is a model established based on the heat exchange process between the human body and the surrounding environment. It can predict the subjective thermal comfort perception of people in different environments and quantify the human body's response to environmental factors such as temperature, humidity, and airflow; The PMV formula integrates multiple parameters such as temperature, humidity, airflow, radiation temperature, basal metabolic rate, clothing thermal resistance, etc., which can fully reflect the thermal comfort of the environment and is suitable for complex multi-field coupling control systems; The PMV formula provides a quantitative indicator that can objectively measure the thermal comfort of the environment, making it easier for the system to adjust the control strategies of various physical fields through feedback.

[0023] A temperature and humidity control unit 3, wherein the temperature and humidity control unit 3 calculates the temperature field PMV value and the humidity field PMV value based on the temperature gradient control equation and the humidity control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and controls the temperature and humidity of the environmental chamber; In this embodiment, the temperature and humidity control unit 3 uses the temperature gradient control equation and humidity control equation in the multi-dimensional thermal comfort comprehensive control algorithm to calculate the temperature field PMV value and the humidity field PMV value to control the temperature and humidity of the environmental chamber. The specific steps are as follows: S3.1. Calculate the temperature change rate of the environmental chamber using the temperature gradient control equation , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. ; S3.2. Use the humidity control equation to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculating relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field ; S3.3. Adjust the temperature and humidity of the environmental chamber according to the PMV value of the temperature field, the PMV value of the humidity field and the temperature and humidity equipment.

[0024] In this embodiment, the temperature and humidity of the environmental chamber are adjusted according to the temperature field PMV value, the humidity field PMV value and the temperature and humidity equipment, as follows: If the calculated temperature field PMV value and humidity field PMV value exceed the comfort zone to , then the temperature adjustment operation is triggered: , the environment is overheated: start the refrigeration system to reduce the temperature in the cabin until Return to your comfort zone.

[0025] , the environment is too cold: start the heater to increase the cabin temperature until Return to your comfort zone; , humidity is too low, the air is dry: Turn on the humidifier to increase the humidity in the air until Return to your comfort zone.

[0026] , humidity is too high, the air is humid: start the dehumidifier to reduce the humidity in the air until Enter your comfort zone; In this embodiment S3.1, the temperature gradient control equation is used to calculate the temperature change rate of the environmental chamber. , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. , the specific method is as follows: Construct temperature gradient control equation to calculate temperature change rate : ; in, For the cabin Temperature of a temperature sensor; is the target temperature; is the temperature regulation coefficient; is the Laplace operator of the temperature field; is the spatial temperature diffusion coefficient; Calculate effective temperature : ; in, is the weight coefficient of temperature change rate; Calculate the PMV value of the temperature field : ; in, is the effective temperature.

[0027] In this embodiment, the temperature adjustment coefficient For controlling temperature and target temperature The adjustment speed between The value is set manually; Spatial temperature diffusion coefficient Control the diffusion rate of temperature in the cabin, The value is further set through experiments; Air temperature The temperature of all temperature sensors in the environmental chamber Average obtained; Temperature change rate weight coefficient Control temperature change rate to effective temperature The degree of influence is determined by experiments Specific value.

[0028] In this embodiment S3.2, the humidity control equation is used to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculate corrected relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field , the specific method is as follows: Constructing humidity control equation to calculate humidity change rate in environmental chamber : ; in, is the humidity adjustment factor; is the target relative humidity; is the current relative humidity; is the coupling coefficient of temperature to humidity change; is the dew point temperature; Calculate corrected relative humidity and corrected water vapor pressure : ; ; in, is the weight coefficient of humidity change rate; The effective temperature Saturated water vapor pressure under Calculate the PMV value of the humidity field : ; in, is the effective temperature; Corrected for water vapor pressure.

[0029] In this embodiment, The humidity adjustment coefficient represents the humidity and the set value. The effect of the deviation on the humidity change rate, The specific value is determined by experiment; is the current relative humidity, which is obtained by averaging the humidity of all humidity sensors in the environmental chamber; The coupling coefficient of temperature to humidity change represents the air temperature Dew point temperature The difference in humidity affects The specific value depends on the specific design and heat and mass transfer characteristics of the environmental chamber; The dew point temperature is the temperature at which water vapor in the air begins to condense into water, representing the maximum humidity capacity of the air; is the weight coefficient of humidity change rate, The specific value is determined based on experimental results; The effective temperature The saturated water vapor pressure under , the value is obtained by looking up the table.

[0030] An airflow regulating unit 4, wherein the airflow regulating unit 4 calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the airflow velocity of the environmental cabin; In this embodiment, the airflow adjustment unit 4 calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm and adjusts the airflow velocity in the environmental cabin. The specific method is as follows: S4.1. Calculate the airflow change rate in the environmental chamber using the airflow control equation , calculate the effective air velocity , and according to the effective air flow velocity Calculate the corrected heat transfer coefficient , and the PMV formula of Fanger model is introduced to calculate the PMV value of airflow field , the specific method is as follows: Construct airflow control equation to calculate the airflow change rate in the environmental chamber : ; in, is the current air flow speed; is the target airflow velocity; is the airflow adjustment coefficient; is the local pressure gradient; is the pressure gradient influence coefficient; Effective air flow rate : ; in, is the weight coefficient of airflow change rate; Corrected heat transfer coefficient : ; in, is the corrected heat transfer coefficient; is the empirical coefficient; Calculate the PMV value of the airflow field: ; in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; In this embodiment, is the current airflow velocity, which is obtained by averaging the airflow velocities of all airflow sensors in the environmental chamber; is the airflow adjustment coefficient, which indicates the sensitivity of the adjustment rate when the airflow velocity deviates from the set value, and the specific value is obtained through experiments; It is the local pressure gradient, which indicates the pressure difference at different locations in the cabin and is used to control the change of airflow speed; is the pressure gradient influence coefficient; it indicates the sensitivity of local pressure to the change of airflow velocity. The specific value is determined by experiment; is the weight coefficient of the airflow change rate, which indicates the influence of the airflow change rate on the effective airflow velocity; In the formula It is an empirical coefficient that reflects the effect of airflow velocity on convective heat transfer, and this coefficient has been verified in many studies on thermal comfort of buildings and humans.

[0031] S4.2. Adjust the airflow velocity in the environmental chamber according to the PMV value of the airflow field and the airflow regulating equipment.

[0032] In this embodiment, the airflow velocity of the environmental chamber is adjusted according to the PMV value of the airflow field and the airflow regulating device, as follows: The comfortable range of PMV value in airflow field is to : , The air flow speed is too low: Start the smart fan and increase the speed to increase the air flow speed until the air flow speed returns to a comfortable range; , the air flow speed is too high: reduce the fan speed or temporarily turn off the fan to reduce the air flow speed until PMV_v returns to the comfortable range.

[0033] An air quality control unit 5, wherein the air quality control unit 5 calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the carbon dioxide concentration in the environmental cabin; In this embodiment, the air quality control unit 5 calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm and adjusts the carbon dioxide concentration in the environmental cabin. The specific method is as follows: S5.1. Calculate the rate of change of carbon dioxide using the carbon dioxide change equation , calculate the corrected metabolic rate The PMV formula of Fanger model is introduced to calculate the PMV value of air quality field , the specific method is as follows: Constructing the carbon dioxide change equation to calculate the carbon dioxide change rate : ; in, is the current carbon dioxide concentration; To set a target concentration of carbon dioxide; is the ventilation rate; To control the carbon dioxide variation adjustment coefficient; To control the coupling effect adjustment coefficient of ventilation; Calculate corrected metabolic rate : ; in, is the carbon dioxide change impact coefficient; Calculate the PMV value of the air quality field: ; in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; To correct metabolic rate; In this embodiment, is the current carbon dioxide concentration, which is obtained by averaging the carbon dioxide concentration data of all carbon dioxide sensors in the environmental chamber; The specific value of the adjustment coefficient for controlling the change of carbon dioxide is controlled artificially; The specific value of the coupling effect adjustment coefficient for controlling ventilation is controlled manually; S5.2. Adjust the carbon dioxide concentration in the environmental chamber according to the PMV value of the air quality field and the air quality control equipment; In this embodiment, the carbon dioxide concentration in the environmental chamber is adjusted according to the PMV value of the air quality field and the air quality control device. The specific method is as follows: The comfortable range of PMV value of air quality field is to : , CO2 concentration is too high: When CO2 concentration exceeds the comfort threshold, As the value increases, the system will start or increase the operating intensity of the air purifier to accelerate air circulation and reduce the carbon dioxide concentration in the cabin until Return to your comfort zone; , carbon dioxide concentration is low: when the air quality is good and the carbon dioxide concentration is low, the system can reduce the working intensity of the air purifier, reduce energy consumption and maintain stable air quality.

[0034] A thermal comfort environment chamber is also provided, comprising an environment chamber 1, wherein the environment chamber 1 simulates and provides a thermal comfort space environment through comprehensive regulation of temperature field, humidity field, airflow field and air quality field; In this embodiment, the environmental chamber 1 includes a chamber structure module, a temperature and humidity device, an air flow adjustment device, an air quality control device, and a terminal touch screen; The cabin structure module uses heat-insulating materials to construct a fully enclosed environment cabin; The temperature and humidity equipment includes heaters, cooling systems, humidifiers, dehumidifiers, temperature sensors and humidity sensors, which are used to comprehensively control the temperature and humidity in the thermal comfort environment cabin; they can be dynamically adjusted according to the values ​​of the temperature sensors and humidity sensors to ensure that the cabin temperature is maintained within the human comfort range of 20 degrees Celsius to 26 degrees Celsius, and the humidity is maintained between 40% and 60%; The airflow control device includes intelligent fans, ventilation ducts and airflow sensors to control the speed and direction of airflow in the environmental chamber. The airflow control device ensures even air distribution to avoid local overcooling or overheating. It can also adjust the airflow according to the user's position and activity to make the air flow softer and improve comfort. The air quality control equipment monitors and adjusts the air quality in the environmental cabin in real time through air purifiers and carbon dioxide sensors; the air purifier removes particulate matter, allergens and harmful gases, and maintains the carbon dioxide concentration in the cabin within the appropriate range of 400ppm-1000ppm; The terminal touch screen allows users to view the environmental status in the environmental chamber in real time and manually adjust the temperature, humidity, airflow and air quality parameters.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A multi-field coupling control system, characterized in that: include: A multi-field coupling control unit (2), wherein the multi-field coupling control unit (2) is based on a multi-dimensional thermal comfort comprehensive control algorithm, and integrates a temperature field, a humidity field, an airflow field and an air quality field to comprehensively and dynamically control the environment inside the environmental cabin; A temperature and humidity control unit (3), wherein the temperature and humidity control unit (3) calculates a temperature field PMV value and a humidity field PMV value based on a temperature gradient control equation and a humidity control equation in a multi-dimensional thermal comfort comprehensive control algorithm, and controls the temperature and humidity of the environmental chamber; An airflow regulating unit (4), wherein the airflow regulating unit (4) calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and regulates the airflow velocity of the environmental cabin; An air quality control unit (5), wherein the air quality control unit (5) calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the carbon dioxide concentration in the environmental cabin.

2. The multi-field coupling control system according to claim 1, characterized in that: The multi-dimensional thermal comfort comprehensive control algorithm is implemented based on the PMV formula of the Fanger model, which introduces the control parameters and control coefficients of the temperature field, humidity field, airflow field and air quality field, and calculates the PMV value to comprehensively control the environment in the environmental cabin.

3. The multi-field coupling control system according to claim 2, characterized in that: The multi-field coupling control unit (2) is based on a multi-dimensional thermal comfort comprehensive control algorithm, and integrates the temperature field, humidity field, airflow field and air quality field to comprehensively and dynamically control the environment in the environmental cabin. The specific steps are as follows: S2.1, construct the PMV formula of the basic Fanger model; S2.2, using the temperature gradient control equation to calculate the temperature change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the PMV value of the temperature field, and the temperature and humidity control unit (3) adjusts the temperature of the environmental chamber according to the PMV value of the temperature field; S2.3, using the humidity control equation to calculate the humidity change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the PMV value of the humidity field, and the temperature and humidity control unit (3) adjusts the humidity of the environmental chamber according to the PMV value of the humidity field; S2.4, using the airflow control equation to calculate the airflow change rate of the environmental chamber, and introducing the PMV formula of the Fanger model to calculate the PMV value of the airflow field, and the airflow adjustment unit (4) adjusts the airflow velocity of the environmental chamber according to the PMV value of the airflow field; S2.

5. The carbon dioxide change rate is calculated using the carbon dioxide change equation, and the PMV formula of the Fanger model is introduced to calculate the PMV value of the air quality field. The air quality control unit (5) adjusts the carbon dioxide concentration in the environmental chamber according to the PMV value of the air quality field.

4. The multi-field coupling control system according to claim 3, characterized in that: In S2.1, the PMV formula of the basic Fanger model is constructed as follows: ； in, is the basal metabolic rate; is the external mechanical power, which is taken as 0 in this system; is the surface temperature of the clothes; is the mean radiant temperature; is the air temperature; is the water vapor pressure of air; is the clothing coefficient; is the convective heat transfer coefficient.

5. The multi-field coupling control system according to claim 4, characterized in that: The temperature and humidity control unit (3) uses the temperature gradient control equation and the humidity control equation in the multi-dimensional thermal comfort comprehensive control algorithm to calculate the temperature field PMV value and the humidity field PMV value, and controls the temperature and humidity of the environmental chamber. The specific steps are as follows: S3.

1. Calculate the temperature change rate of the environmental chamber using the temperature gradient control equation , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. ; S3.

2. Use the humidity control equation to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculating relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field ; S3.

3. Adjust the temperature and humidity of the environmental chamber according to the PMV value of the temperature field, the PMV value of the humidity field and the temperature and humidity equipment.

6. The multi-field coupling control system according to claim 5, characterized in that: In S3.1, the temperature gradient control equation is used to calculate the temperature change rate of the environmental chamber. , combined with the air temperature to calculate the effective temperature of the entire environmental chamber , and the effective temperature The PMV formula introduced into the Fanger model is used to calculate the PMV value of the temperature field. , the specific method is as follows: Construct temperature gradient control equation to calculate temperature change rate : ； in, For the cabin Temperature sensor temperature; is the target temperature; is the temperature regulation coefficient; is the Laplace operator of the temperature field; is the spatial temperature diffusion coefficient; Calculate effective temperature : ； in, is the weight coefficient of temperature change rate; Calculate the PMV value of the temperature field : ； in, is the effective temperature.

7. The multi-field coupling control system according to claim 6, characterized in that: In S3.2, the humidity control equation is used to calculate the humidity change rate of the environmental chamber, combined with the effective temperature Calculate corrected relative humidity and corrected water vapor pressure , and the PMV formula of Fanger model is introduced to calculate the PMV value of humidity field , the specific method is as follows: Constructing humidity control equation to calculate humidity change rate in environmental chamber : ； in, is the humidity adjustment factor; is the target relative humidity; is the current relative humidity; is the coupling coefficient of temperature to humidity change; is the dew point temperature; Calculate corrected relative humidity and corrected water vapor pressure : ； ； in, is the weight coefficient of humidity change rate; The effective temperature Saturated water vapor pressure under Calculate the PMV value of the humidity field : ； in, is the effective temperature; Corrected for water vapor pressure.

8. The multi-field coupling control system according to claim 7, characterized in that: The airflow adjustment unit (4) calculates the PMV value of the airflow field based on the airflow control equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the airflow velocity in the environmental chamber. The specific method is as follows: S4.

1. Calculate the airflow change rate in the environmental chamber using the airflow control equation , calculate the effective air flow velocity , and according to the effective air flow velocity Calculate the corrected heat transfer coefficient , and the PMV formula of Fanger model is introduced to calculate the PMV value of airflow field , the specific method is as follows: Construct airflow control equation to calculate the airflow change rate in the environmental chamber : ； in, is the current air flow speed; is the target airflow velocity; is the airflow adjustment coefficient; is the local pressure gradient; is the pressure gradient influence coefficient; Effective air flow rate : ； in, is the weight coefficient of airflow change rate; Corrected heat transfer coefficient : ； in, is the corrected heat transfer coefficient; is the empirical coefficient; Calculate the PMV value of the airflow field: ； in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; S4.

2. Adjust the airflow velocity in the environmental chamber according to the PMV value of the airflow field and the airflow regulating equipment.

9. The multi-field coupling control system according to claim 8, characterized in that: The air quality control unit (5) calculates the PMV value of the air quality field based on the carbon dioxide change equation in the multi-dimensional thermal comfort comprehensive control algorithm, and adjusts the carbon dioxide concentration in the environmental chamber. The specific method is as follows: S5.

1. Calculate the rate of change of carbon dioxide using the carbon dioxide change equation , calculate the corrected metabolic rate The PMV formula of Fanger model is introduced to calculate the PMV value of air quality field , the specific method is as follows: Constructing the carbon dioxide change equation to calculate the carbon dioxide change rate : ； in, is the current carbon dioxide concentration; To set a target concentration of carbon dioxide; is the ventilation rate; To control the carbon dioxide variation adjustment coefficient; To control the coupling effect adjustment coefficient of ventilation; Calculate corrected metabolic rate : ； in, is the carbon dioxide change impact coefficient; Calculate the PMV value of the air quality field: ； in, is the effective temperature; To correct for water vapor pressure; is the corrected heat transfer coefficient; To correct metabolic rate; S5.

2. Adjust the carbon dioxide concentration according to the PMV value of the air quality field and the air quality control equipment.

10. A thermal comfort environment cabin, controlled based on the multi-field coupling control system according to any one of claims 1 to 9, characterized in that: The environmental cabin (1) comprises an environmental cabin (1), wherein the environmental cabin (1) simulates and provides a thermally comfortable space environment through comprehensive regulation of a temperature field, a humidity field, an airflow field and an air quality field, and the environmental cabin (1) comprises a cabin structure module, a temperature and humidity device, an airflow regulation device, an air quality control device and a terminal touch screen; The cabin structure module uses heat-insulating materials to construct a fully enclosed environment cabin; Temperature and humidity equipment includes heaters, refrigeration systems, humidifiers, dehumidifiers, temperature sensors and humidity sensors, which are used to comprehensively control the temperature and humidity in the thermal comfort environment cabin; The airflow regulating device includes an intelligent fan, ventilation ducts and airflow sensors, which are used to control the flow speed and direction of the airflow in the environmental chamber; The air quality control equipment monitors and adjusts the air quality in the environmental chamber in real time through air purifiers and carbon dioxide sensors; The terminal touch screen allows users to view the environmental status in the environmental chamber in real time and manually adjust the temperature, humidity, airflow and air quality parameters.

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