A window opening recognition method and system in an indoor air conditioning environment

Abstract

The application provides a window opening identification method and system in an indoor air conditioning environment. The window opening identification method comprises the following steps: collecting total heat in a duration period when an indoor environment is closed and an air conditioner is not turned on; collecting air conditioner cooling / heating capacity when the indoor environment is opened and the air conditioner is turned on; obtaining indoor air enthalpy that should be increased or decreased in the closed indoor environment according to the total heat and the air conditioner cooling / heating capacity; obtaining initial total indoor air enthalpy and actual indoor air enthalpy after the air conditioner is turned on; judging whether to open a window according to the increased or decreased indoor air enthalpy, the initial total indoor air enthalpy and the actual indoor air enthalpy, and obtaining a window opening identification result. According to the increased or decreased indoor air enthalpy, the initial total indoor air enthalpy and the actual indoor air enthalpy, whether to open the window is judged, the window opening identification in the indoor air conditioning environment is realized, the cost of the window opening identification is reduced, and the practical performance is improved.

Description

Technical Field

[0001] This application relates to the field of window opening recognition technology, and in particular to a method and system for window opening recognition in an indoor air-conditioned environment. Background Technology

[0002] Currently, air conditioning energy consumption has been the largest energy consumer in commercial buildings for many consecutive years, and the wasteful behavior of opening windows while using air conditioning is one of the important reasons for high air conditioning energy consumption. In order to accurately locate the wasteful behavior of air conditioning, the existing technology uses electronic locks on window sashes for sensing. However, this solution has problems such as overly strict electronic locking conditions that make the window sashes completely impossible to open, and inaccurate locking information caused by poor contact between the window sash and the electronic lock due to window aging.

[0003] Opening windows is a common way for users to improve indoor air quality, and its existence is reasonable. However, the diversity of window sashes and the complexity of window installation make electronic lock settings cumbersome, costly, and impractical.

[0004] Therefore, how to achieve window opening recognition in indoor air-conditioned environments, reduce costs, and improve practicality has become a problem that needs to be solved.

[0005] The information disclosed in the background section is only intended to enhance the understanding of the background of this application, and therefore may contain information that is not part of the prior art known to those skilled in the art. Summary of the Invention

[0006] This application provides a method and system for identifying open windows in an indoor air-conditioned environment, in order to solve the problems existing in the prior art.

[0007] Firstly, this application provides a method for identifying open windows in an indoor air-conditioned environment, including:

[0008] S1. Collect the total heat generated during a period of time when the room is closed and the air conditioning is not on.

[0009] S2. Collect the cooling / heating output of the air conditioner when the indoor air conditioner is on;

[0010] S3. Based on the total heat and the cooling / heating supply of the air conditioner, obtain the indoor air enthalpy value that should be increased or decreased under indoor closed conditions;

[0011] S4. Obtain the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on;

[0012] S5. Based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, determine whether the indoor windows are open during this time period, and obtain the window opening identification result.

[0013] In some embodiments, the indoor air enthalpy value that should be increased or decreased under the indoor closed condition is divided into the following cases:

[0014] a. When the air conditioner is in cooling mode, the indoor air enthalpy decreases, and the increase or decrease in indoor air enthalpy is the difference between the total heat and the cooling capacity of the air conditioner.

[0015] b. When the air conditioner is in heating mode, the indoor air enthalpy increases, and the increase or decrease in indoor air enthalpy is the sum of the total heat and the heat supplied by the air conditioner.

[0016] In some embodiments, S5 includes:

[0017] S501. Calculate the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value;

[0018] S502. Determine whether the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value. Based on the determination result, determine whether the indoor window is open, and obtain the window opening identification result.

[0019] In some embodiments, the window opening recognition result includes:

[0020] If the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value, then it is determined that the indoor windows are not open.

[0021] If the actual indoor air enthalpy value is greater than or less than the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value, then it is determined that the indoor window is open.

[0022] In some embodiments, it also includes:

[0023] S6. When the window opening recognition result indicates that the indoor window is open, an energy-saving warning is issued and the air conditioner window opening energy-saving mode is activated.

[0024] In some embodiments, the total heat is the sum of solar radiation heat, indoor heat generation, heat exchanged between indoors and outdoors, and heat dissipation from human activities.

[0025] In some embodiments, the heat exchange between indoors and outdoors is either the heat dissipated from indoors to outdoors or the heat transferred from outdoors to indoors.

[0026] In some embodiments, the heat dissipation from human activity is determined by installing a human presence sensor indoors to determine the number of people indoors, and calculating the heat dissipation from individual human activity according to the human body heat dissipation standard.

[0027] The total heat dissipation from indoor activities is calculated based on the number of people in the room and the heat dissipation from the activities of each individual person.

[0028] Secondly, this application provides a window opening recognition system for indoor air-conditioned environments, including:

[0029] The first data acquisition module collects the total heat generated during a period of time when the room is closed and the air conditioning is not on.

[0030] The second data acquisition module collects the cooling / heating output of the air conditioner when the indoor air conditioner is on.

[0031] The calculation module calculates the indoor air enthalpy value that should be increased or decreased under closed indoor conditions based on the total heat and the air conditioning cooling / heating supply.

[0032] The module acquires the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on.

[0033] The identification module determines whether the windows are open during the time period based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, and obtains the window opening identification result.

[0034] In some embodiments, it also includes:

[0035] The processing module issues an energy-saving warning and activates the air conditioning window-opening energy-saving mode when the window opening recognition result indicates that the window is open indoors.

[0036] The present application provides a method and system for identifying window openings in an indoor air-conditioned environment. The window opening identification method includes: S1, collecting the total heat during a period of time when the room is closed and the air conditioning is not on; S2, collecting the cooling / heating output of the air conditioning when the air conditioning is on; S3, obtaining the indoor air enthalpy value that should increase or decrease when the room is closed based on the total heat and the cooling / heating output of the air conditioning; S4, obtaining the initial total air enthalpy value and the actual indoor air enthalpy value after the air conditioning is on; S5, determining whether the room is open during the time period based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, and obtaining the window opening identification result. This application calculates the increase or decrease in indoor air enthalpy under closed conditions by collecting the total heat in a closed room without air conditioning and the cooling / heating supply of the air conditioner when it is on. By obtaining the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is on, the application determines whether the room is open based on the increase or decrease in indoor air enthalpy, the initial total air enthalpy, and the actual indoor air enthalpy. This enables window opening recognition in an air-conditioned indoor environment, reduces the cost of window opening recognition, and improves practicality. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0038] Figure 1 A flowchart of the window opening recognition method provided in this application under indoor air conditioning environment.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms "a" and "the" as used in the embodiments of this application are also intended to include the plural forms unless the context clearly indicates otherwise.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0045] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0046] It should be understood that the term "and / or" used in this document 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, or B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] 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).”

[0048] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0049] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0050] Figure 1 The flowchart of the window opening recognition method in an indoor air-conditioned environment provided in this application is as follows: Figure 1 As shown, the window opening recognition method provided in this application under indoor air conditioning environment includes:

[0051] S1. Collect the total heat generated during a period of time when the room is closed and the air conditioning is not on.

[0052] In some embodiments, the total heat is the sum of solar radiation heat, indoor heat generation, heat exchanged between indoors and outdoors, and heat dissipation from human activities.

[0053] In some embodiments, the heat exchange between indoors and outdoors is either heat dissipation from indoors to outdoors or heat transfer from outdoors to indoors (without air convection).

[0054] Specifically, in this embodiment of the application, the following explanation is provided regarding how to collect the aforementioned solar radiation heat, indoor heat dissipation, indoor heat generation, and heat dissipation from human activities:

[0055] Solar radiation heat was measured in another room without air conditioning using a black ball radiation thermometer and other related devices. The sunlight, size, and other conditions of the measured room were the same as those of the room where the windows were determined.

[0056] Another method is to calculate the heat gain by converting the change in enthalpy of the indoor air over the same time period in a similar indoor environment without air conditioning. This method can comprehensively calculate the indoor heat gain from both solar radiation and heat conduction to obtain the value of the heat absorbed or dissipated indoors.

[0057] Indoor heat loss to the outside refers to the amount of heat dissipated from indoors to the outside when windows are closed, excluding the effects of air conditioning, occupants, and other indoor heat-generating equipment. This can usually be obtained through on-site measurement. Under conditions where air conditioning is off, there are no people in the room, and no indoor heat-generating equipment, the calculation method for indoor heat loss is: Indoor heat loss = Solar radiation heat + Outdoor conduction heat - Change in indoor air enthalpy. This method clearly defines indoor heat loss in this scenario because, without other interfering factors and ignoring indoor heat storage, the change in indoor air enthalpy is simply the result of solar radiation heat + outdoor conduction heat - indoor heat loss.

[0058] Among them, the outdoor heat conduction can be obtained by installing thermometers on the inside and outside of windows and walls to obtain the indoor and outdoor temperature difference. Based on the indoor and outdoor temperature difference and the heat conduction performance of the windows and walls, the relevant information on outdoor heat conduction can be obtained.

[0059] Human activity heat dissipation can be assessed by installing human presence sensors indoors to determine the number of people present, and then calculating the heat dissipation of each individual based on human body heat dissipation standards. The total heat dissipation from human activity in the room can then be calculated based on the number of people and the heat dissipation of each individual.

[0060] Indoor heat generation refers to the heat generated by indoor electrical appliances and other heat-generating devices. Data collected by sensors is used to determine the indoor heat generation. The calculated indoor heat generation value can be obtained by collecting indoor current, voltage, and rated thermal efficiency data (for heat-generating devices such as electric kettles and water heaters, this is generally current * voltage * rated thermal efficiency; for moving devices such as fans, it is generally current * voltage * rated thermal efficiency). Typically, the heat generated by appliances is lower than this value.

[0061] S2. Collect the cooling / heating output of the air conditioner when the indoor air conditioner is on;

[0062] Specifically, in this embodiment, the cooling / heating capacity of the air conditioner can be obtained based on the air conditioner power. The air conditioner power can be calculated from the indoor air conditioner control panel or the air supply and return air temperature, humidity, and fan speed. The specific calculation method is as follows:

[0063] For a single fixed-frequency air conditioner, the instantaneous power of the air conditioner can be accurately determined by its calibrated input current and voltage and its corresponding air conditioner power. Instantaneous power multiplied by duration yields the corresponding power consumption and output of the air conditioner.

[0064] For multi-split air conditioners, the accurate instantaneous power of the air conditioner can be obtained through the energy metering port provided by the manufacturer or metering supplier. Instantaneous power multiplied by duration gives the corresponding power consumption and output of the air conditioner.

[0065] For water-based air conditioning systems, there are currently mature air conditioning energy meters available for measurement, and they can be used directly if they meet relevant national standards.

[0066] S3. Based on the total heat and the cooling / heating supply of the air conditioner, obtain the indoor air enthalpy value that should be increased or decreased under indoor closed conditions;

[0067] In some embodiments, the indoor air enthalpy value that should be increased or decreased under the indoor closed condition is divided into the following cases:

[0068] a. In the air conditioning cooling state, the air conditioner causes a decrease in the indoor air enthalpy value. The increase or decrease in the indoor air enthalpy value is the difference between the total heat and the cooling capacity of the air conditioner. This difference is the calculated value of S3.

[0069] b. When the air conditioner is in heating mode, the air conditioner causes an increase in the indoor air enthalpy value. The increase or decrease in the indoor air enthalpy value is the sum of the total heat and the heat supplied by the air conditioner. The difference is the calculated value of S3.

[0070] S4. Obtain the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on;

[0071] S5. Based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, determine whether the indoor windows are open during this time period, and obtain the window opening identification result.

[0072] In some embodiments, S5 includes:

[0073] S501. Calculate the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value;

[0074] S502. Determine whether the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value. Based on the determination result, determine whether the indoor window is open, and obtain the window opening identification result.

[0075] In some embodiments, the window opening recognition result includes:

[0076] If the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value, then it is determined that the indoor windows are not open.

[0077] If the actual indoor air enthalpy value is greater than or less than the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value, then it is determined that the indoor window is open.

[0078] Specifically, in this embodiment of the application, when a window is opened indoors, the indoor air enthalpy balance will be disrupted by the interference of outdoor air, causing the indoor air enthalpy to change beyond the current conditions. The direction of the change will be consistent with the current state of the outdoor air (i.e., the outdoor air enthalpy is lower in winter, and the indoor air enthalpy changes towards the lower direction, while the opposite is true in summer). This allows us to determine whether a window is open indoors. Further calculations can determine the percentage of the indoor air enthalpy affected under the current conditions, thereby clarifying the degree to which the indoor air is affected.

[0079] More specifically, in the embodiments of this application, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the increased or decreased indoor air enthalpy, and the indoor air enthalpy is in a continuously stable state, then the determination result is that the indoor windows are not open; the basis is that the indoor air is in a state of thermal equilibrium, and no outdoor air participates in the indoor heat exchange.

[0080] It should be noted that when the indoor air conditioner is in cooling mode during summer, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the indoor air enthalpy has changed according to the expected change caused by the difference, then the indoor condition is determined to be that the windows are not open. The basis for this is that the change in indoor air enthalpy conforms to the law of indoor heat exchange. Although it is not in a state of thermal equilibrium, no outdoor air participates in indoor heat exchange. The change in indoor air enthalpy is consistent with the result of no outdoor air generating heat and mass exchange. Therefore, the indoor condition is that the windows are not open.

[0081] Conversely, when the indoor air conditioner is in cooling mode during summer, if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the indoor heat difference, then the indoor window is considered open. The basis for this is that the change in indoor air enthalpy does not conform to the law of indoor heat exchange, outdoor air participates in the exchange of heat and mass, and the change in indoor air enthalpy conforms to the result of heat and mass exchange generated by outdoor air. Therefore, the indoor state is that the window is open.

[0082] In addition, when the indoor air conditioner is in heating mode during winter (heating conditions), if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the indoor air enthalpy has changed according to the expected change caused by the difference, then the conclusion is that the indoor windows are not open. The basis is that the change in indoor air enthalpy conforms to the law of change in indoor heat and mass exchange. Although it is not in a state of thermal equilibrium, no outdoor air participates in indoor heat exchange. The change in indoor air enthalpy conforms to the result of no outdoor air generating heat and mass exchange, therefore the indoor state is that the windows are not open.

[0083] Conversely, when the indoor air conditioner is in heating mode during winter (heating conditions), if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the difference in indoor heat, then the judgment is that the indoor window is open. The basis is: the change in indoor air enthalpy does not conform to the law of indoor heat exchange transformation, outdoor air participates in the exchange of indoor heat and mass, and the change in indoor air enthalpy conforms to the result of outdoor air generating heat and mass exchange, therefore the indoor state is that the window is open.

[0084] The specific implementation method is as follows:

[0085] To determine whether a room has a window open, first collect the heat received in the room over a period of time while it is closed, assuming the heat is 1000 kilojoules; since the air conditioner in the room is not turned on, the cooling capacity provided by the air conditioner (i.e., the cooling / heating capacity of the air conditioner) is 0 kilojoules.

[0086] The room is at standard atmospheric pressure. Assuming the initial enthalpy of the room is 30 kJ / kg, the air volume in the enclosed space is 100 cubic meters, and the air density is 1.29 kg / m³, the actual increase in heat in the room under these conditions is calculated as: 1000 - 0 = 1000 kJ.

[0087] If the room has no windows open, the 1000 kJ of heat will cause the indoor air enthalpy to rise by 1000 kJ. The air volume is 100 cubic meters, the air density is 1.29 kg / m³, and the total air mass is 129 kg. Based on the initial enthalpy of 30 kJ / kg, the total enthalpy is 30 * 129 = 3870 kJ.

[0088] After calculating the increase of 1000 kJ, the air enthalpy rises, and the final state is 3870 + 1000 = 4870 kJ. If the air enthalpy is 4870 kJ in the final state, it can be determined that the room is not open.

[0089] Otherwise, if the final air enthalpy exceeds 4870 kilojoules, for example, reaching 6800 kilojoules, it can be determined that the indoor window is open, because the indoor air and the outdoor air have undergone heat exchange or mass exchange.

[0090] In other cases, the same principle applies.

[0091] S6. When the window opening recognition result indicates that the indoor window is open, an energy-saving warning is issued and the air conditioner window opening energy-saving mode is activated.

[0092] This application calculates the increase or decrease in indoor air enthalpy under closed conditions by collecting the total heat in a closed room without air conditioning and the cooling / heating supply of the air conditioner when it is on. By obtaining the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is on, the application determines whether the room is open based on the increase or decrease in indoor air enthalpy, the initial total air enthalpy, and the actual indoor air enthalpy. This enables window opening recognition in an air-conditioned indoor environment, reduces the cost of window opening recognition, and improves practicality.

[0093] This application also provides a window opening recognition system for indoor air-conditioned environments, including:

[0094] The first data acquisition module collects the total heat generated during a period of time when the room is closed and the air conditioning is not on.

[0095] The second data acquisition module collects the cooling / heating output of the air conditioner when the indoor air conditioner is on.

[0096] The calculation module calculates the indoor air enthalpy value that should be increased or decreased under closed indoor conditions based on the total heat and the air conditioning cooling / heating supply.

[0097] The module acquires the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on.

[0098] The identification module determines whether the windows are open during the time period based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, and obtains the window opening identification result.

[0099] In some embodiments, it also includes:

[0100] The processing module issues an energy-saving warning and activates the air conditioning window-opening energy-saving mode when the window opening recognition result indicates that the window is open indoors.

[0101] This application identifies whether windows are open in an indoor air-conditioned environment. When an open window is detected, an energy-saving warning is issued and the air-conditioning window-opening energy-saving control mode is activated, which helps to reduce air-conditioning energy consumption and extend the service life of the air conditioner.

[0102] In addition, based on this application, it can also be used to determine the presence of people indoors and the source of indoor heat. Therefore, the technical solution of this application can also detect whether there is a thermal hazard (fire) in the environment where people are active and whether the heat source equipment is overloaded. When the above situations occur, it can issue corresponding warnings, thereby improving safety.

[0103] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0104] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the claims.

[0105] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A method for identifying open windows in an indoor air-conditioned environment, characterized in that, include: S1. Collect the total heat generated during a period of time when the room is closed and the air conditioning is not on. The total heat is the sum of solar radiation heat, indoor heat generated, heat exchanged between indoors and outdoors, and heat dissipation from human activities; Among them, solar radiation heat is measured in another room without air conditioning using a black sphere radiation thermometer; indoor heat generation is the heat generated by indoor heating equipment, which is determined by collecting data from sensors; indoor and outdoor heat exchange heat is the heat dissipated from indoors to outdoors or the heat transferred from outdoors to indoors; heat dissipation from human activities is determined by installing human presence sensors in the room to determine the number of people in the room, and calculating the heat dissipation of a single person's activities according to human body heat dissipation standards; the total heat dissipation from human activities in the room is calculated based on the number of people in the room and the heat dissipation of a single person's activities. S2. Collect the cooling / heating output of the air conditioner when the indoor air conditioner is on; S3. Based on the total heat and the air conditioning cooling / heating supply, obtain the indoor air enthalpy value that should increase or decrease under closed indoor conditions; the indoor air enthalpy value that should increase or decrease under closed indoor conditions is divided into the following cases: a. When the air conditioner is in cooling mode, the indoor air enthalpy decreases, and the increase or decrease in indoor air enthalpy is the difference between the total heat and the cooling capacity of the air conditioner. b. When the air conditioner is in heating mode, the indoor air enthalpy increases, and the increase or decrease in indoor air enthalpy is the sum of the total heat and the heat supplied by the air conditioner; S4. Obtain the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on; S5. Based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, determine whether the indoor windows were opened during this time period, and obtain the window opening identification result, including: S501. Calculate the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value; S502. Determine whether the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value. Based on the determination result, determine whether the indoor window is open and obtain the window opening identification result. The window opening identification result includes whether the indoor window is open or not. Situations where indoor windows are not open include: When the air conditioner is in cooling mode, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the indoor air enthalpy has changed as expected according to the difference, then the result is that the indoor windows are not open. When the air conditioner is in heating mode, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the indoor air enthalpy has changed as expected according to the difference, then the result is that the indoor windows are not open. Indoor windows are opened in the following situations: When the air conditioner is in cooling mode, if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the indoor heat difference, then the judgment is that the indoor window should be opened. When the air conditioner is in heating mode, if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the difference in indoor heat, then the decision is to open the windows.

2. The window recognition method according to claim 1, characterized in that, Also includes: S6. When the window opening recognition result indicates that the indoor window is open, an energy-saving warning is issued and the air conditioner window opening energy-saving mode is activated.

3. A window opening recognition system for indoor air-conditioned environments, characterized in that, include: The first data acquisition module collects the total heat generated during a period of time when the room is closed and the air conditioning is not on. The total heat is the sum of solar radiation heat, indoor heat generated, heat exchanged between indoors and outdoors, and heat dissipation from human activities; Among them, solar radiation heat is measured in another room without air conditioning using a black sphere radiation thermometer; indoor heat generation is the heat generated by indoor heating equipment, which is determined by collecting data from sensors; indoor and outdoor heat exchange heat is the heat dissipated from indoors to outdoors or the heat transferred from outdoors to indoors; heat dissipation from human activities is determined by installing human presence sensors in the room to determine the number of people in the room, and calculating the heat dissipation of a single person's activities according to human body heat dissipation standards; the total heat dissipation from human activities in the room is calculated based on the number of people in the room and the heat dissipation of a single person's activities. The second data acquisition module collects the cooling / heating output of the air conditioner when the indoor air conditioner is on. The calculation module calculates the indoor air enthalpy value that should be increased or decreased under closed indoor conditions based on the total heat and the air conditioning cooling / heating supply. The module acquires the initial total indoor air enthalpy and the actual indoor air enthalpy after the air conditioner is turned on. The identification module, based on the increased or decreased indoor air enthalpy value, the initial total air enthalpy value, and the actual indoor air enthalpy value, determines whether the windows are open during the specified time period, and obtains a window opening identification result, including: The calculation module calculates the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value; The judgment module determines whether the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value. Based on the judgment result, it determines whether the indoor window is open and obtains the window opening recognition result, which includes whether the indoor window is open or not. Situations where indoor windows are not open include: When the air conditioner is in cooling mode, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the indoor air enthalpy has changed as expected according to the difference, then the result is that the indoor windows are not open. When the air conditioner is in heating mode, if the actual indoor air enthalpy is equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the indoor air enthalpy has changed as expected according to the difference, then the result is that the indoor windows are not open. Indoor windows are opened in the following situations: When the air conditioner is in cooling mode, if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the reduced indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the indoor heat difference, then the judgment is that the indoor window should be opened. When the air conditioner is in heating mode, if the actual indoor air enthalpy is not equal to the sum of the initial total air enthalpy and the increased indoor air enthalpy, and the change in indoor air enthalpy exceeds the expected change caused by the difference in indoor heat, then the decision is to open the windows.

4. The window opening recognition system according to claim 3, characterized in that, Also includes: The processing module issues an energy-saving warning and activates the air conditioning window-opening energy-saving mode when the window opening recognition result indicates that the window is open indoors.

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