Windowing identification method and system in indoor air conditioning environment

Abstract

The invention provides a windowing identification method and system in an indoor air conditioner environment. The windowing identification method comprises the following steps: collecting total heat in a continuous time period when an indoor environment is closed and an air conditioner is not turned on; collecting air conditioner cold / heat supply in an indoor air conditioner starting state; obtaining an indoor air enthalpy value which should be increased or decreased under the indoor closed condition according to the total heat and the air conditioner cold / heat supply; obtaining an indoor initial total air enthalpy value and an indoor actual air enthalpy value after the air conditioner is turned on; and according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the actual indoor air enthalpy value, whether a window is opened or not is judged, and a window opening recognition result is obtained. Whether the window is opened or not is judged according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the actual indoor air enthalpy value, window opening recognition in the indoor air conditioner environment is achieved, the cost consumed by window opening recognition is reduced, and the practical performance is improved.

Description

Technical Field

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

[0002] At present, air conditioning energy consumption has been the largest energy consumption item in commercial buildings for many years. Among them, the wasteful behavior of opening windows and turning on air conditioners is one of the important reasons for the high energy consumption of air conditioning. In order to accurately locate the wasteful behavior of air conditioning, the existing technology uses electronic locks for window sashes for sensing. However, this solution has the problem that the electronic locking conditions are too harsh, resulting in the window sashes being completely unable to be opened, and the locking information is inaccurate due to poor contact between the window sash and the electronic lock caused by aging of the window.

[0003] Opening windows is a common behavior for users to improve indoor air, which is reasonable. However, the diversity of window sashes and the complexity of window installation make the setting process of electronic locks complicated, costly and impractical.

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

[0005] The above information disclosed in the background section is only for enhancing understanding of the background of the present application and therefore it may contain information that does not form the prior art known to a person of ordinary skill in the art. Summary of the invention

[0006] The present application provides a method and system for identifying an open window in an indoor air-conditioned environment, so as to solve the problems existing in the prior art.

[0007] In a first aspect, the present application provides a method for identifying an open window in an indoor air-conditioned environment, comprising:

[0008] S1, collect the total heat of the room during the continuous period when it is closed and the air conditioner is not turned on;

[0009] S2, collecting the cooling / heating of the air conditioner when the air conditioner is turned on indoors;

[0010] S3, according to the total heat and the cooling / heating of the air conditioner, obtaining the indoor air enthalpy value that should be increased or decreased when the indoor room is closed;

[0011] S4, obtaining the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on;

[0012] S5. According to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, determine whether the indoor window is opened during the time period to obtain a window opening recognition result.

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

[0014] a. When the air conditioner is in cooling state, the indoor air enthalpy value decreases, and the increased or decreased indoor air enthalpy value is the difference between the total heat and the cooling capacity of the air conditioner;

[0015] b. When the air conditioner is in heating state, the indoor air enthalpy value increases, and the increased or decreased indoor air enthalpy value is the sum of the total heat and the air conditioner heat supply.

[0016] In some embodiments, the S5 includes:

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

[0018] S502, determining 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, and determining whether the indoor window is open based on the determination result to obtain a window open recognition 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, it is determined that the indoor window is not opened;

[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, it is determined that the indoor window is opened.

[0022] In some embodiments, it also includes:

[0023] S6. When the window opening recognition result is that the indoor window is open, an energy-saving use warning is issued and the air-conditioning window opening energy-saving mode is turned on.

[0024] In some embodiments, the total heat is the sum of solar radiation heat, indoor heat generation, indoor and outdoor heat exchange heat, and heat dissipation caused by human activities.

[0025] In some embodiments, the heat exchanged between indoor and outdoor is the heat dissipated from indoor to outdoor or the heat transferred from outdoor to indoor.

[0026] In some embodiments, the heat dissipation of personnel activities is determined by installing a human presence sensor 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 the human body heat dissipation standard;

[0027] The total heat dissipation of indoor personnel activities is calculated according to the number of people indoors and the heat dissipation of individual personnel activities.

[0028] In a second aspect, the present application provides a window opening recognition system in an indoor air-conditioned environment, comprising:

[0029] The first collection module collects the total heat of the room during a continuous period when the room is closed and the air conditioner is not turned on;

[0030] The second collection module collects the cooling / heating of the air conditioner when the air conditioner is turned on indoors;

[0031] A calculation module, which obtains the indoor air enthalpy value that should be increased or decreased when the indoor room is closed according to the total heat and the cooling / heating of the air conditioner;

[0032] The acquisition module obtains the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on;

[0033] The recognition module determines whether the indoor window is opened during the time period according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, and obtains a window opening recognition result.

[0034] In some embodiments, it also includes:

[0035] The processing module issues an energy-saving use warning and turns on the air-conditioning window opening energy-saving mode when the window opening recognition result is that the indoor window is open.

[0036] The present application provides a method and system for identifying window openings in an indoor air-conditioned environment, wherein the window opening identification method comprises: S1, collecting the total heat during a continuous period when the room is in a closed state and the air-conditioning is not turned on; S2, collecting the air-conditioning cooling / heating when the room is in an air-conditioning turned on state; S3, according to the total heat and the air-conditioning cooling / heating, obtaining the indoor air enthalpy value that should be increased or decreased when the room is closed; S4, obtaining the indoor initial total air enthalpy value and the indoor actual air enthalpy value after turning on the air-conditioning; S5, according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, judging whether the indoor window is opened during the time period, and obtaining the window opening identification result. The present application collects the total heat of the room when it is closed and not air-conditioned, as well as the cooling / heating of the air-conditioning when the air-conditioning is on, calculates the indoor air enthalpy value that should be increased or decreased when the room is closed, and obtains the initial total air enthalpy value of the room and the actual indoor air enthalpy value after the air-conditioning is turned on. According to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the actual indoor air enthalpy value, it is determined whether the room has a window open, thereby realizing window opening recognition in the indoor air-conditioned environment, reducing the cost of window opening recognition and improving practical performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0038] Figure 1 This is a flow chart of the method for identifying an open window in an indoor air-conditioned environment provided in this application.

[0039] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0041] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "an" and "the" used in the embodiments of the present application are also intended to include plural forms, unless the context clearly indicates other meanings.

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

[0043] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0046] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] As used herein, the words "if" and "if" may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0048] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

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

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

[0051] S1, collect the total heat of the room during the continuous period when it is closed and the air conditioner is not turned on;

[0052] In some embodiments, the total heat is the sum of solar radiation heat, indoor heat generation, indoor and outdoor heat exchange heat, and heat dissipation caused by human activities.

[0053] In some embodiments, the heat exchanged between indoor and outdoor is the heat dissipated from indoor to outdoor or the heat transferred from outdoor to indoor (without air convection).

[0054] Specifically, in the embodiment of the present application, the following description is given on how to collect the above-mentioned solar radiation heat, indoor heat dissipation, indoor heat generation, and heat dissipation caused by human activities:

[0055] Solar radiation heat is measured by using a black ball radiation thermometer and other related devices in another room without air conditioning. The conditions of sunshine, size, etc. in the measured room are the same as those in the room where the windows are opened.

[0056] Another method is to calculate the indoor heat gain by converting the enthalpy change of the indoor air in the same period of time into the indoor heat gain in another room with similar conditions without turning on the air conditioner. This method can comprehensively calculate the indoor solar radiation heat gain and indoor heat conduction to obtain the value of indoor heat absorption or heat dissipation.

[0057] The amount of heat dissipated from indoors to outdoors refers to the amount of heat dissipated from indoors to the outside world when the windows are closed, excluding the influence of air conditioning, indoor personnel, indoor heating equipment, etc. Usually, the corresponding value of indoor heat dissipation can be obtained through on-site measurement. When the air conditioning is not turned on, there are no people in the room, and there are no indoor heating equipment, the indoor heat dissipation is calculated as follows: indoor heat dissipation = solar radiation heat + outdoor conduction heat - indoor air enthalpy change. The above method can clearly define the indoor heat dissipation in this scenario, because in the absence of other factors, ignoring the indoor heat storage, the change in indoor air enthalpy is the result of solar radiation heat + outdoor conduction heat - indoor heat dissipation.

[0058] Among them, outdoor conduction heat can be obtained by setting thermometers on the inside and outside of windows and walls to obtain the indoor and outdoor temperature difference. According to the indoor and outdoor temperature difference and the thermal conductivity performance of windows and walls, the relevant situation of outdoor conduction heat can be obtained.

[0059] The heat dissipation caused by human activities can be determined by installing human presence sensors in the room to determine the number of people, and the heat dissipation caused by individual human activities can be calculated according to the human heat dissipation standard. Based on the number of people in the room and the heat dissipation caused by individual human activities, the total heat dissipation caused by human activities in the room can be calculated.

[0060] Indoor heat is the heat generated by indoor electrical appliances and other heating devices. The indoor heat generation is determined by collecting data through sensors. Indoor heating devices can obtain the calculated value of indoor heat generation through the indoor current, voltage and calibrated thermal efficiency (heating devices such as electric kettles and electric water heaters generally use current*voltage*equipment calibrated thermal efficiency, and sports equipment such as fans generally use current*voltage*equipment calibrated thermal efficiency). Usually, the heat generation of electrical appliances will be lower than this value.

[0061] S2, collecting the cooling / heating of the air conditioner when the air conditioner is turned on indoors;

[0062] Specifically, in the embodiment of the present application, the air conditioning cooling / heating can be obtained according to the air conditioning power, and the air conditioning power can be calculated from the indoor air conditioning control panel or the air conditioning supply and return air temperature, humidity and wind speed to obtain the indoor air conditioning power. The specific calculation method is:

[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. The instantaneous power*duration can be used to obtain the corresponding power consumption and output of the air conditioner.

[0064] If it is a multi-split air conditioner, the accurate instantaneous power of the air conditioner can be obtained through the energy metering port provided by the manufacturer or metering company. The instantaneous power*duration can be used to obtain the corresponding power consumption and output of the air conditioner.

[0065] If it is a water system air conditioner, there are currently mature air conditioning energy meters for measurement, which can be used directly if they comply with relevant national standards.

[0066] S3, according to the total heat and the cooling / heating of the air conditioner, obtaining the indoor air enthalpy value that should be increased or decreased when the indoor room is closed;

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

[0068] a. In the cooling state of the air conditioner, the air conditioner causes the indoor air enthalpy value to decrease, and the increased or decreased indoor air enthalpy value is the difference between the total heat and the cooling capacity of the air conditioner, and the difference is the calculated value of S3;

[0069] b. When the air conditioner is in heating state, the air conditioner causes the indoor air enthalpy value to increase. The increased or decreased indoor air enthalpy value is the sum of the total heat and the air conditioner heat supply, and the difference is the calculated value of S3.

[0070] S4, obtaining the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on;

[0071] S5. According to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, determine whether the indoor window is opened during the time period to obtain a window opening recognition result.

[0072] In some embodiments, the S5 includes:

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

[0074] S502, determining 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, and determining whether the indoor window is open based on the determination result to obtain a window open recognition 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, it is determined that the indoor window is not opened;

[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, it is determined that the indoor window is opened.

[0078] Specifically, in an embodiment of the present application, when a window is opened indoors, the equilibrium state of the indoor air enthalpy will be broken by the interference of outdoor air, causing the indoor air enthalpy in this state to change beyond the current conditions, and 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 in a lower direction, while the opposite is true in summer). This can determine whether there is a window open indoors, and further calculation can determine the percentage of the indoor air enthalpy affected in the current situation, thereby clarifying the extent to which the indoor air is affected.

[0079] To be more specific, in an embodiment of the present application, 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, and the indoor air enthalpy value is in a continuous and stable state, the judgment result is that the indoor window is not opened; the basis is: the indoor air is in a thermal equilibrium state, and no outdoor air participates in the indoor heat exchange.

[0080] It should be noted that in summer, when the indoor air conditioner is in a cooling state, 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 judgment result is that the indoor window is not opened; the basis is: the change in indoor air enthalpy conforms to the law of indoor heat exchange transformation. Although it is not in a thermal equilibrium state, there is no outdoor air participating in the indoor heat exchange. The change in indoor air enthalpy conforms to the result of no outdoor air generating heat and mass exchange, so the indoor state is that the window is not opened.

[0081] On the contrary, in summer, when the indoor air conditioner is in cooling state, if the actual indoor air enthalpy value is not equal to the sum of the initial total air enthalpy value and the reduced indoor air enthalpy value, and the change in the indoor air enthalpy value exceeds the expected change caused by the indoor heat difference, the judgment result is that the indoor window is open; the basis is: the change in indoor air enthalpy value does not conform to the law of indoor heat exchange transformation, outdoor air participates in indoor heat and mass exchange, and the change in indoor air enthalpy value conforms to the result of heat and mass exchange generated by outdoor air, so the indoor state is open window.

[0082] In addition, in winter, when the indoor air conditioner is in the heating state (heating condition), if the actual indoor air enthalpy value is equal to the sum of the initial total air enthalpy value and the increased indoor air enthalpy value, and the indoor air enthalpy value has undergone the expected change according to the difference, then the judgment result is that the indoor window is not opened; the basis is: the change of indoor air enthalpy value conforms to the law of indoor heat and mass exchange change. Although it is not in a thermal equilibrium state, there is no outdoor air participating in the indoor heat exchange. The change of indoor air enthalpy value conforms to the result of no outdoor air generating heat and mass exchange, so the indoor window is not opened.

[0083] On the contrary, in winter, when the indoor air conditioner is in the heating state (heating condition), if the actual indoor air enthalpy value is not equal to the sum of the initial total air enthalpy value and the increased indoor air enthalpy value, and the change in the indoor air enthalpy value exceeds the expected change caused by the indoor heat difference, the judgment result is that the indoor window is open; the basis is: the change in the indoor air enthalpy value does not conform to the law of indoor heat exchange transformation, outdoor air participates in the indoor heat and mass exchange, and the indoor air enthalpy value transformation conforms to the result of heat and mass exchange generated by outdoor air, so the indoor state is open.

[0084] The specific embodiments are as follows:

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

[0086] The room is at a standard atmospheric pressure. Assume that the initial enthalpy value in the room is 30 kilojoules per kilogram, the air content of the enclosed indoor space is 100 cubic meters, and the air density is 1.29 kilograms per cubic meter. In the above case, the actual heat increase in the room is calculated as: 1000-0 = 1000 kilojoules.

[0087] If there are no windows in the room, the 1000 kilojoules of heat will cause the indoor air enthalpy to rise by 1000 kilojoules. The air content is 100 cubic meters, the air density is 1.29 kilograms per cubic meter, and the total air mass is 129 kilograms. Based on the initial enthalpy value of 30 kilojoules per kilogram, the total enthalpy value is 30*129=3870 kilojoules.

[0088] After calculating the increase of 1000 kJ, the air enthalpy rises, and the final state is 3870+1000=4870 kJ. At this time, in the final state, if the air enthalpy value is 4870 kJ, it can be judged that there is no window open in the room.

[0089] Otherwise, if the air enthalpy value in the final state exceeds 4870 kJ, for example, reaches 6800 kJ, it can be determined that the indoor window is open because heat exchange or mass exchange occurs between the indoor air and the outdoor air.

[0090] And so on for other situations.

[0091] S6. When the window opening recognition result is that the indoor window is open, an energy-saving use warning is issued and the air-conditioning window opening energy-saving mode is turned on.

[0092] The present application collects the total heat of the room when it is closed and not air-conditioned, as well as the cooling / heating of the air-conditioning when the air-conditioning is on, calculates the indoor air enthalpy value that should be increased or decreased when the room is closed, and obtains the initial total air enthalpy value of the room and the actual indoor air enthalpy value after the air-conditioning is turned on. According to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the actual indoor air enthalpy value, it is determined whether the room has a window open, thereby realizing window opening recognition in the indoor air-conditioned environment, reducing the cost of window opening recognition and improving practical performance.

[0093] The present application also provides a window opening recognition system in an indoor air-conditioned environment, comprising:

[0094] The first collection module collects the total heat of the room during a continuous period when the room is closed and the air conditioner is not turned on;

[0095] The second collection module collects the cooling / heating of the air conditioner when the air conditioner is turned on indoors;

[0096] A calculation module, which obtains the indoor air enthalpy value that should be increased or decreased when the indoor room is closed according to the total heat and the cooling / heating of the air conditioner;

[0097] The acquisition module obtains the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on;

[0098] The recognition module determines whether the indoor window is opened during the time period according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, and obtains a window opening recognition result.

[0099] In some embodiments, it also includes:

[0100] The processing module issues an energy-saving use warning and turns on the air-conditioning window opening energy-saving mode when the window opening recognition result is that the indoor window is open.

[0101] The present application identifies whether a window is open in an indoor air-conditioned environment. When an indoor window is detected to be open, an energy-saving warning is issued and the air-conditioning window opening energy-saving control mode is turned on, which is beneficial to reducing air-conditioning energy consumption and increasing the service life of the air-conditioning.

[0102] In addition, based on the present application, it can also be used to realize the judgment of indoor personnel and indoor heat sources. Therefore, the technical solution of this application can also realize the ability to detect whether there is a thermal hazard (fire) in the human activity environment and whether the heat source equipment is overloaded. When the above situation occurs, corresponding warnings can be issued to improve safety.

[0103] It should be understood that, although the various steps in the flowcharts in the above-described embodiments are sequentially displayed according to the indications of the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and they can be executed in other orders. Moreover, at least a portion of the steps in the figure may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily to be carried out sequentially, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0104] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims.

[0105] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present 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 of the room during the continuous period when it is closed and the air conditioner is not turned on; S2, collecting the cooling / heating of the air conditioner when the air conditioner is turned on indoors; S3, according to the total heat and the cooling / heating of the air conditioner, obtaining the indoor air enthalpy value that should be increased or decreased when the indoor room is closed; S4, obtaining the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on; S5. According to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, determine whether the indoor window is opened during the time period to obtain a window opening recognition result.

2. The window opening recognition method according to claim 1, characterized in that: The indoor air enthalpy value that should be increased or decreased in the indoor closed condition is divided into the following cases: a. When the air conditioner is in cooling state, the indoor air enthalpy value decreases, and the increased or decreased indoor air enthalpy value is the difference between the total heat and the cooling capacity of the air conditioner; b. When the air conditioner is in heating state, the indoor air enthalpy value increases, and the increased or decreased indoor air enthalpy value is the sum of the total heat and the air conditioner heat supply.

3. The window opening recognition method according to claim 2, characterized in that: The S5 comprises: S501, calculating the sum of the initial total air enthalpy value and the increased or decreased indoor air enthalpy value; S502, determining 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, and determining whether the indoor window is open based on the determination result to obtain a window open recognition result.

4. The window opening recognition method according to claim 3, characterized in that: The window recognition result includes: 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, it is determined that the indoor window is not opened; 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, it is determined that the indoor window is opened.

5. The window opening recognition method according to claim 1, characterized in that: Also includes: S6. When the window opening recognition result is that the indoor window is open, an energy-saving use warning is issued and the air-conditioning window opening energy-saving mode is turned on.

6. The window opening recognition method according to claim 1, characterized in that: The total heat is the sum of solar radiation heat, indoor heat generation, indoor and outdoor heat exchange heat, and human activity heat dissipation.

7. The window opening recognition method according to claim 6, characterized in that: The heat exchange between indoor and outdoor is the heat dissipated from indoor to outdoor or the heat transferred from outdoor to indoor.

8. The window opening recognition method according to claim 6, characterized in that: The heat dissipation of personnel activities is determined by installing a human presence sensor in the room to determine the number of people in the room, and the heat dissipation of a single person's activities is calculated according to the human body heat dissipation standard; The total heat dissipation of indoor personnel activities is calculated according to the number of people indoors and the heat dissipation of individual personnel activities.

9. A window opening recognition system in an indoor air-conditioned environment, characterized in that: include: The first collection module collects the total heat of the room during a continuous period when the room is closed and the air conditioner is not turned on; The second collection module collects the cooling / heating of the air conditioner when the air conditioner is turned on indoors; A calculation module, which obtains the indoor air enthalpy value that should be increased or decreased when the indoor room is closed according to the total heat and the cooling / heating of the air conditioner; The acquisition module obtains the initial total air enthalpy value of the room and the actual air enthalpy value of the room after the air conditioner is turned on; The recognition module determines whether the indoor window is opened during the time period according to the increased or decreased indoor air enthalpy value, the initial total air enthalpy value and the indoor actual air enthalpy value, and obtains a window opening recognition result.

10. The window opening recognition system according to claim 9, characterized in that: Also includes: The processing module issues an energy-saving use warning and turns on the air-conditioning window opening energy-saving mode when the window opening recognition result is that the indoor window is open.

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