Air conditioning energy saving control method, device, storage medium and electronic equipment

Abstract

The present application relates to an air-conditioning energy-saving control method, device, storage medium and electronic device, wherein the method includes: obtaining a first number of people in a room at the current moment, and obtaining a second number of people in the room within a preset time before the current moment; comparing the first number with the second number; if the first number is less than the second number, comparing the first number with a threshold of the number of people remaining in the room to obtain a first comparison result; real-time statistics of the duration of maintaining the first number unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air-conditioning according to the second comparison result. Automatically control the working state of the air-conditioning compressor according to the number of people in the room to avoid the compressor from running at a high frequency all the time, so as to reduce energy waste while ensuring the comfort of the people in the room.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to an air conditioning energy-saving control method, device, storage medium and electronic equipment. Background Art

[0002] With the development of air conditioning technology, variable frequency air conditioners are becoming more and more common in daily life. Variable frequency air conditioners use variable frequency compressors, which can automatically adjust the operating frequency of the compressor according to the changes in the cold (heat) load of the room. After reaching the set temperature, the variable frequency air conditioner operates at a lower frequency, avoiding the discomfort caused by drastic changes in room temperature. For example, in the hot summer, when people leave the room and forget to turn off the air conditioner, the air conditioner will continue to run at a high load, resulting in a waste of energy by the air conditioner. For another example, when there are fewer people in the room and the set temperature has not been reached, the air conditioner will still run at a higher frequency, which will cause discomfort to the people and also cause a waste of energy by the air conditioner.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the existing variable frequency air conditioner cannot automatically control the working state of the air conditioner compressor according to the number of people in the room, resulting in energy waste. Summary of the invention

[0004] In order to reduce energy waste, the present application provides an air conditioning energy-saving control method, device, storage medium and electronic equipment.

[0005] In a first aspect of the present application, an air conditioning energy-saving control method is provided, which specifically includes:

[0006] Obtain a first number of people in the room at the current moment, and obtain a second number of people in the room within a preset time period before the current moment;

[0007] comparing the first amount to the second amount;

[0008] If the first number is less than the second number, comparing the first number with the threshold of the number of people remaining in the room to obtain a first comparison result;

[0009] The duration for maintaining the first quantity unchanged is counted in real time, the duration is compared with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and the operating state of the air conditioner is adjusted according to the second comparison result.

[0010] By adopting the above technical solution, if the first number is less than the second number, it means that the number of people in the room at the current moment is less than the number of people in the previously preset time period, which further indicates that the people in the room have left the room in the middle. Then, the first number of people in the room at the current moment is compared with the threshold of the number of people remaining in the room, and a first comparison result is obtained in which the first number is less than the threshold of the number of people remaining in the room or the first number is not less than the threshold of the number of people remaining in the room. When the first number is less than the threshold of the number of people remaining in the room, it means that there are fewer people in the current room. Then, the continuous time during which the number of people in the room at the current moment remains unchanged is compared with the smaller time threshold, so that the operating frequency of the air conditioner compressor is reduced at the earlier time node; when the first number is not less than the threshold of the number of people remaining in the room, it means that there are more people in the current room. Then, the continuous time during which the number of people in the room at the current moment remains unchanged is compared with the larger time threshold, so that the operating frequency of the air conditioner compressor is reduced at the later time node to avoid the compressor from running at high frequency all the time, so as to better reduce energy waste while ensuring the comfort of people in the room.

[0011] Optionally, counting in real time the duration for maintaining the first number unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air conditioner according to the second comparison result, includes:

[0012] Real-time statistics are generated on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is less than the standard duration.

[0013] If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a first fixed frequency;

[0014] If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

[0015] By adopting the above technical solution, the duration of time when the first number remains unchanged, that is, the duration of time when no one enters or leaves, is counted. If the first number is less than the threshold of the number of people remaining in the room, it means that there are fewer people in the room at the current moment, the overall heat generation is less, and the air conditioner does not need to be operated at high frequency for a long time. If the duration is greater than the duration threshold corresponding to the first comparison result (that is, the smaller duration threshold less than the standard duration), it means that the duration of time when no one enters or leaves exceeds the duration threshold, and the compressor operating frequency of the air conditioner is reduced to the first fixed frequency to achieve the purpose of reducing energy waste; if the duration is less than or equal to the duration threshold, it means that the duration of time when no one enters or leaves does not exceed the duration threshold, and the high-frequency cooling time is short, then the compressor operating frequency will not be reduced, and the room will continue to be cooled.

[0016] Optionally, if the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a first fixed frequency includes:

[0017] If the second comparison result is that the duration is greater than the duration threshold, determining a first fixed frequency according to the first number;

[0018] The operating frequency of the compressor of the air conditioner is reduced to the first fixed frequency.

[0019] By adopting the above technical solution, if the duration of the first number remaining unchanged is greater than the duration threshold, then the first fixed frequency is determined according to the size of the first number, and the first number is positively correlated with the first fixed frequency. The smaller the first number, the smaller the first fixed frequency, and the greater the reduction in the compressor operating frequency. Because there are fewer people in the room at the current moment, a higher operating frequency is not required (that is, a stronger cooling effect is not required). Therefore, the compressor operating frequency is finally reduced to the first fixed frequency, which can reduce energy waste.

[0020] Optionally, the real-time counting of a duration during which the first quantity is maintained unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air conditioner according to the second comparison result includes:

[0021] Real-time statistics are generated on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is greater than or equal to a threshold of the number of people remaining in the room, the duration is compared with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is greater than a standard duration.

[0022] If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a second fixed frequency;

[0023] If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

[0024] By adopting the above technical solution, if the first number of people in the room at the current moment is greater than or equal to the threshold of the number of people remaining in the room, it means that there are more people in the room at the current moment, the heat generation is large, and the air conditioner needs to run at high frequency for a longer period of time, that is, when the continuous time of the first number remaining unchanged does not exceed the time threshold (a larger time threshold greater than the standard time), the compressor operating frequency is kept unchanged; when the continuous time exceeds the time threshold, it means that the compressor has been running at high frequency for a sufficient time, and the compressor operating frequency needs to be reduced to a second fixed frequency, so as to better reduce energy waste while ensuring the indoor comfort of people.

[0025] Optionally, if the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a second fixed frequency, includes:

[0026] If the second comparison result is that the duration is greater than the duration threshold, determining a second fixed frequency according to the first number;

[0027] After maintaining the compressor operating frequency of the air conditioner for a preset time, it is reduced to the second fixed frequency.

[0028] By adopting the above technical solution, if the duration of the first number remaining unchanged is greater than the duration threshold, then the second fixed frequency is determined according to the size of the first number. The first number is positively correlated with the second fixed frequency. The larger the first number, the larger the second fixed frequency, and the smaller the reduction in the compressor operating frequency. Because there are many people in the room at the current moment, the heat generation is high, and the operating frequency cannot be too low (that is, the cooling effect cannot be too weak), the compressor operating frequency is finally maintained at the current moment for a preset time. After a period of high-frequency cooling, it is reduced to the second fixed frequency, thereby reducing energy waste while ensuring the comfort of people in the room.

[0029] Optionally, after adjusting the operating state of the air conditioner according to the second comparison result, the method further includes:

[0030] Acquire the indoor temperature of the room, calculate a first temperature difference between the indoor temperature and a preset temperature, and if the first temperature difference is less than a first difference threshold, acquire a third number of people currently in the room, and acquire the body surface temperature of each person;

[0031] Subtract each of the body surface temperatures from the indoor temperature to obtain a corresponding second temperature difference, and count the number of the second temperature differences exceeding a second difference threshold;

[0032] If the number is greater than the preset number, the operating frequency of the compressor of the air conditioner is increased by an equal value;

[0033] If the number is less than or equal to the preset number, determining whether there is a heat source within the preset range of the person whose second temperature difference exceeds the second difference threshold;

[0034] If the heat source exists, the operating frequency of the compressor of the air conditioner is kept unchanged.

[0035] By adopting the above technical solution, after adjusting the running state of the air conditioner, if the first temperature difference between the indoor temperature and the preset temperature is less than the first difference threshold, the first temperature difference is small, indicating that the indoor temperature has basically reached the preset temperature. At this time, the body surface temperature of each of the third number of people in the room is subtracted from the indoor temperature to obtain multiple second temperature differences. If the second temperature difference exceeds the second difference threshold, it means that the difference between the body surface temperature of the person and the indoor temperature is large, and the comfort level of the person is low. Then, the number of the multiple second temperature differences exceeding the second difference threshold is counted. If the number is greater than the preset number, it means that although the indoor temperature has reached the preset temperature, there are many There is a large gap between the body surface temperature of the personnel and the indoor temperature, and the comfort level of most personnel is low. In this case, the operating frequency of the compressor is increased to achieve the purpose of enhancing the cooling effect, and the operating frequency is increased slowly and evenly to prevent the personnel from catching cold for the second time. If the number of multiple second temperature differences that exceed the second difference threshold is less than or equal to the preset number, it means that there are relatively few people with low comfort levels in the room. In this case, it is determined whether there are heat sources such as heating equipment within the preset range of these personnel. If there are heat sources, it will affect the body surface temperature of the personnel. In this case, the operating frequency of the compressor is kept unchanged and the operating frequency is no longer increased, thereby reducing energy waste.

[0036] Optionally, if the number is greater than a preset number, the operating frequency of the compressor of the air conditioner is increased by an equal value, including:

[0037] If the number is greater than the preset number, determining a third fixed frequency according to the difference between the third number and the first number;

[0038] After a preset buffering time, the compressor operating frequency of the air conditioner is increased by the third fixed frequency.

[0039] By adopting the above technical solution, if the number of the second temperature differences exceeding the second difference threshold value among the multiple second temperature differences is greater than the preset number, it means that more people have just entered the room from the hotter external environment. Since the temperature difference between the current room temperature and the preset temperature is small, the compressor is already running at a lower frequency. The compressor is first operated at the current operating frequency for a buffer time to allow the body of the person entering the room to adapt first, avoiding direct cooling that makes the person sick. Then the compressor operating frequency is increased by a third fixed frequency to avoid a sudden drop in temperature that causes the person's body to catch a cold.

[0040] In a second aspect of the present application, an air conditioning energy-saving control device is provided, specifically comprising:

[0041] A number acquisition module is used to acquire a first number of people in the room at the current moment, and acquire a second number of people in the room within a preset time period before the current moment;

[0042] A headcount comparison module, configured to compare the first headcount with the second headcount;

[0043] A first comparison module, configured to compare the first number with a threshold of the number of people remaining in the room to obtain a first comparison result if the first number is less than the second number;

[0044] The air conditioning adjustment module is used to count in real time the duration for maintaining the first number unchanged, compare the duration with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjust the operating state of the air conditioning according to the second comparison result.

[0045] By adopting the above technical solution, the number acquisition module obtains the first number of people in the room at the current moment and the number of people in the room within the preset time before the current moment. The number comparison module compares the first number and the second number to determine the change in the number of people in the room at the current moment. If the first number is less than the second number, the first comparison module then compares the first number of people in the room at the current moment with the threshold of the number of people remaining in the room to obtain a first comparison result. Finally, the air-conditioning adjustment module real-time statistics the duration for maintaining the first number unchanged, and based on the first comparison result, compares the duration with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusts the operating status of the air-conditioner according to the second comparison result, so that the operating status of the air-conditioner can be adjusted according to the number of people in the room, thereby better reducing energy waste.

[0046] In summary, the present application includes at least one of the following beneficial technical effects:

[0047] When the first number is less than the threshold of the number of people remaining in the room, it means that there are fewer people in the current room. Then, the duration of the unchanged number of people in the room at the current moment is compared with the smaller duration threshold, so that the operating frequency of the air-conditioning compressor is reduced at an earlier time node; when the first number is not less than the threshold of the number of people remaining in the room, it means that there are more people in the current room. Then, the duration of the unchanged number of people in the room at the current moment is compared with the larger duration threshold, so that the operating frequency of the air-conditioning compressor is reduced at a later time node to avoid the compressor from running at a high frequency all the time, so as to ensure the comfort of people in the room while better reducing energy waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1It is a flow chart of an air conditioning energy-saving control method provided in an embodiment of the present application;

[0049] Figure 2 It is a flow chart of another air conditioning energy-saving control method provided in an embodiment of the present application;

[0050] Figure 3 It is a flowchart of another air conditioning energy-saving control method provided in an embodiment of the present application;

[0051] Figure 4 It is a structural schematic diagram of an air-conditioning energy-saving control device provided in an embodiment of the present application;

[0052] Figure 5 It is a structural schematic diagram of another air conditioning energy-saving control device provided in an embodiment of the present application.

[0053] Description of the accompanying drawings: 11. Number acquisition module; 12. Number comparison module; 13. First comparison module; 14. Air conditioning adjustment module. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.

[0055] In the description of the embodiments of the present application, words such as "illustrative", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "illustrative", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "illustrative", "for example" or "for example" is intended to present related concepts in a concrete way.

[0056] In the description of the embodiments of the present application, the term "and / or" is only a kind of association relationship describing the associated objects, indicating that there may be three kinds of relationships, for example, A and / or B, which can represent: A exists alone, B exists alone, and A and B exist at the same time. In addition, unless otherwise specified, the meaning of the term "multiple" refers to two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. The terms "include", "comprise", "have" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.

[0057] See also Figure 1 The present application embodiment discloses a flow chart of an air conditioner energy-saving control method, which can be implemented by a computer program or run on an air conditioner energy-saving control device based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application, specifically including:

[0058] S101: Obtain a first number of people in the room at the current moment, and obtain a second number of people in the room within a preset time period before the current moment.

[0059] Specifically, the first number of people in the room at the current moment is obtained through a preset infrared thermal imager, wherein infrared thermal imaging is an instrument for measuring the temperature distribution state of the human body surface, which can image the entire human body in real time in the form of a "surface". By counting the number of real-time images, the first number of people in the room at the current moment can be obtained. The number of people in the room within the preset time length before the current moment, that is, the second number, can also be obtained in this way. It should be noted that the preset time length is 2 minutes, and in other embodiments, the preset time length can also be 3 minutes. For example, the first number obtained at the current moment 10:02 is 8, indicating that there are 8 people in the room at 10:02, the time corresponding to the preset time length before the current moment is 10:00, and the second number at 10:00 is 10, indicating that there are 10 people in the room at 10:00.

[0060] S102: Compare the first quantity with the second quantity.

[0061] Specifically, determine the first number and the second number, and compare the first number with the second number. There are three comparison results. The first number is equal to the second number, which means that the number of people in the room has not changed after the preset time period. In other words, there is no entry or exit of the room, or the number of people entering and exiting is equal. The first number is greater than the second number, which means that the number of people in the room has increased after the preset time period. It may be that someone has entered the room, or the number of people leaving is less than the number of people entering. The first number is less than the second number, which means that the number of people in the room has decreased after the preset time period. It may be that someone has gone out of the room, or the number of people leaving is greater than the number of people entering.

[0062] S103: If the first number is smaller than the second number, the first number is compared with a threshold of the number of people remaining in the room to obtain a first comparison result.

[0063] Specifically, after comparing the first number with the second number, if the first number is less than the second number, it means that the number of people in the room at the current moment has decreased, which also means that someone has left the room, and the operating state of the air conditioner should be adjusted accordingly to reduce energy waste. Then the first number is compared with the threshold of the number of people remaining in the room, where the threshold of the number of people remaining in the room is a critical value that defines the degree of the number of people in the room. If the first number is less than the threshold of the number of people remaining in the room, it means that the number of people in the room at the current moment is small; if the first number is not less than the threshold of the number of people remaining in the room, it means that the number of people in the room at the current moment is large. Therefore, the first comparison result obtained is that the first number is less than the threshold of the number of people remaining in the room or the first number is not less than the threshold of the number of people remaining in the room.

[0064] S104: Counting in real time the duration for maintaining the first quantity unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air conditioner according to the second comparison result.

[0065] Specifically, after determining that the number of people in the room has decreased and obtaining the first comparison result, the duration of maintaining the first number unchanged is counted in real time, that is, starting from the current moment, the stage in which the number of people in the room remains unchanged is timed in real time, and the result of the real-time timing is the duration (the duration of the departure of the people in the room). If the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, then the duration is compared with the duration threshold corresponding to the first comparison result, and the duration threshold corresponding to the first comparison result is less than the standard duration, and the second comparison result is obtained. When the second comparison result is that the duration exceeds the duration threshold (a smaller duration threshold), since there are fewer people in the room, there is no need for excessively high-frequency operation, so the compressor operating frequency of the air conditioner is reduced to achieve the purpose of reducing energy waste.

[0066] If the first comparison result is that the first number is not less than the threshold of the number of people remaining in the room, then the duration is compared with the duration threshold corresponding to the first comparison result. The duration threshold corresponding to the first comparison result is greater than the standard duration, and a second comparison result is obtained. When the second comparison result is that the duration exceeds the duration threshold (a larger duration threshold), due to the large number of people in the room, compared to the case where there are fewer people in the room, the air conditioner compressor operation frequency is reduced after the air conditioner compressor has been running at high frequency for a long time, thereby achieving the purpose of reducing energy waste. It should be noted that the duration threshold is the critical value of the duration of the first number that remains unchanged. The standard duration is the normal duration for judging the length of the duration threshold.

[0067] See also Figure 2 The present application embodiment discloses a flow chart of another air conditioner energy-saving control method, which can be implemented by a computer program or run on an air conditioner energy-saving control device based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application, specifically including:

[0068] S201: Obtain a first number of people in the room at the current moment, and obtain a second number of people in the room within a preset time period before the current moment.

[0069] S202: Compare the first quantity with the second quantity.

[0070] S203: If the first number is smaller than the second number, the first number is compared with a threshold of the number of people remaining in the room to obtain a first comparison result.

[0071] For details, please refer to steps S101-S103, which will not be described in detail here.

[0072] S204: Real-time statistics are collected on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is less than the standard duration.

[0073] S205: If the second comparison result is that the duration is greater than the duration threshold, the compressor operating frequency of the air conditioner is reduced to a first fixed frequency.

[0074] In a feasible implementation, if the second comparison result is that the duration is greater than the duration threshold, the first fixed frequency is determined according to the first quantity;

[0075] The compressor operating frequency of the air conditioner is reduced to a first fixed frequency.

[0076] Specifically, if the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, that is, there are fewer people in the room at the current moment and some people have gone out, the duration is compared with the duration threshold (short duration threshold) that is less than the standard duration, that is, the duration when the number of people in the room remains unchanged is compared with the duration threshold that is less than the standard duration, and the second comparison result is obtained. The second comparison result is that the duration is greater than the duration threshold or the duration is not greater than the duration threshold.

[0077] If the second comparison result is that the duration is greater than the duration threshold, it means that the duration of the number of people in the room has exceeded the duration threshold, and further it means that the duration of no one entering or leaving has exceeded the duration threshold. Under the premise that the indoor temperature has not reached the preset temperature, the air conditioner compressor will always run at a high frequency. Since there are fewer people in the room at this time and the heat is less, in order to reduce the energy waste of the air conditioner, the air conditioner compressor does not need to run at a high frequency for a long time, so the operating frequency of the air conditioner compressor is reduced.

[0078] Retrieve the preset operating frequency matching table, which includes the number of people in the room and the corresponding fixed frequencies. Match the first fixed frequency according to the first number. The smaller the first number, the smaller the first fixed frequency. After determining the first fixed frequency, reduce the compressor operating frequency of the air conditioner to the first fixed frequency. It should be noted that the first fixed frequency is determined based on the first number for the following reasons: after exceeding the duration threshold, the number of people in the room remains unchanged and is relatively small, the total amount of heat generated is relatively small, and the cooling intensity in the room does not need to be high. Therefore, according to the first number, it is more reasonable to adjust the operating frequency of the compressor to a slightly lower level.

[0079] For example, at the current time 11:02, the first number is 2, the threshold of the number of people remaining in the room is 3, the standard duration is 6 minutes, and the first number is less than the threshold of the number of people remaining in the room. It is determined that there are fewer people in the room at the current time, and the corresponding duration threshold is less than the standard duration of 5 minutes. Starting from the current time, as time goes by, the real-time statistics of the first number remaining unchanged accumulate to 5 minutes and 01 seconds (exceeding the duration threshold of 5 minutes), indicating that no one has entered the room during this period. Then the compressor operating frequency of the air conditioner is reduced accordingly to achieve the purpose of reducing energy waste.

[0080] If the first number is zero, it means that all people in the room have left the room, so the duration threshold needs to be lowered to obtain an adjusted duration threshold. When the duration of the first number remaining unchanged exceeds the adjusted duration threshold, the air conditioner is directly shut down.

[0081] S206: If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the air conditioner compressor is kept unchanged.

[0082] Specifically, if the second comparison result is that the duration is not greater than (less than or equal to) the duration threshold, it means that the time when the number of people in the room remains unchanged is short, that is, someone returns to the room in a short period of time. In this case, there is no need to reduce the compressor operating frequency and keep the current compressor operating frequency unchanged.

[0083] For example, the current time is 11:02. Starting from the current time, as time goes by, the real-time counted duration of the first quantity remains unchanged accumulates to 4 minutes. At 4 minutes and 1 second (within the duration threshold of 5 minutes), someone enters the room, and the operating frequency of the air conditioner's compressor remains unchanged.

[0084] S207: Real-time statistics are collected on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is greater than or equal to the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is greater than the standard duration.

[0085] S208: If the second comparison result is that the duration is greater than the duration threshold, the operating frequency of the air conditioner compressor is reduced to a second fixed frequency.

[0086] In a feasible implementation, if the second comparison result is that the duration is greater than the duration threshold, the second fixed frequency is determined according to the first quantity;

[0087] After maintaining the compressor operating frequency of the air conditioner for a preset time, it is reduced to a second fixed frequency, and the second fixed frequency is greater than the first fixed frequency.

[0088] Specifically, if the first comparison result is that the first number is not less than the threshold of the number of people remaining in the room, that is, there are more people in the room at the current moment, and the time threshold corresponding to the first comparison result is greater than the standard time, then the duration is compared with the time threshold, that is, the time when the number of people in the room remains unchanged is compared with the time threshold, and a second comparison result is obtained, and the second comparison result is that the duration is greater than the time threshold or the duration is not greater than the time threshold. Among them, the time threshold greater than the standard time is the time threshold used to compare with the duration when the first number is not less than the threshold of the number of people remaining in the room.

[0089] If the second comparison result is that the duration is greater than the duration threshold, it means that the duration of the number of people in the room has exceeded the duration threshold, and further means that the duration of no one entering or leaving has exceeded the duration threshold. Under the premise that the indoor temperature has not reached the preset temperature, the air conditioner compressor will always run at high frequency. Since there are many people in the room at this time and the heat is high, in order to reduce the energy waste of the air conditioner and the comfort of the people in the room, the air conditioner compressor does not need to run at high frequency for a long time, and the high-frequency operation time is longer than when there are fewer people in the room. Therefore, when the duration exceeds the duration threshold, the air conditioner compressor operation frequency is reduced.

[0090] According to the operating frequency matching table, the second fixed frequency corresponding to the first number is matched. At this time, the first number is large and the second fixed frequency is large. After determining the second fixed frequency, the compressor operating frequency of the air conditioner is not directly reduced to the second fixed frequency, but it is operated at the current higher frequency for a preset time, for example, the preset time is 2 minutes, and the room with more people is cooled for a longer period of time. Finally, the compressor operating frequency of the air conditioner is reduced to the second fixed frequency, ensuring the comfort of more people in the room while reducing energy waste.

[0091] S209: If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the air conditioner compressor is kept unchanged.

[0092] Specifically, if the second comparison result is that the duration is not greater than (less than or equal to) the duration threshold, it means that the time when the number of people in the room remains unchanged is short, that is, someone returns to the room in a short period of time. In this case, there is no need to reduce the compressor operating frequency and keep the current compressor operating frequency unchanged.

[0093] For example, the current time is 11:02, the duration threshold is 10 minutes, and the standard duration is 6 minutes. Starting from the current time, as time goes by, the real-time statistics of the first constant duration accumulate to 9 minutes. At 9 minutes and 1 second (within the duration threshold of 10 minutes), someone enters the room, and the compressor operating frequency of the air conditioner remains unchanged. If no one enters the room after more than 10 minutes, the operating frequency is reduced to reduce energy waste.

[0094] See also Figure 3 The present application embodiment discloses a flow chart of another air conditioning energy-saving control method, which can be implemented by a computer program or run on an air conditioning energy-saving control device based on the von Neumann system. The computer program can be integrated into an application or run as an independent tool application, specifically including:

[0095] S301: Obtain a first number of people in the room at the current moment, and obtain a second number of people in the room within a preset time period before the current moment.

[0096] S302: Compare the first quantity with the second quantity.

[0097] S303: If the first number is smaller than the second number, the first number is compared with a threshold of the number of people remaining in the room to obtain a first comparison result.

[0098] S304: Count the duration of maintaining the first quantity unchanged in real time, compare the duration with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjust the operating state of the air conditioner according to the second comparison result.

[0099] For details, please refer to steps S101-S104, which will not be described in detail here.

[0100] S305: Obtain the indoor temperature of the room, calculate the first temperature difference between the indoor temperature and the preset temperature, and if the first temperature difference is less than the first difference threshold, obtain the third number of people currently in the room and obtain the body surface temperature of each person.

[0101] Specifically, the preset temperature is the set temperature of the air conditioner. When the indoor temperature reaches the preset temperature, the compressor of the air conditioner will run at a lower operating frequency. The indoor temperature of the room is obtained through the temperature sensor, and the first temperature difference between the indoor temperature and the preset temperature is calculated. The first temperature difference is compared with the first difference threshold, wherein the first difference threshold is the temperature difference critical value for judging whether the indoor temperature reaches the preset temperature. If the first temperature difference is less than the first difference threshold, it means that the indoor temperature is less than the preset temperature at this time, and it is regarded as reaching the preset temperature. The compressor of the air conditioner is controlled to run at a fixed minimum frequency, thereby better reducing energy waste. At the same time, the third number of people in the current room and the corresponding body surface temperature of each person are obtained through a preset infrared thermal imager.

[0102] It should be noted that the third number in the room may be greater than the first number, indicating that someone has entered after a period of time, or it may be less than the first number, indicating that someone has left after a period of time based on the first number. In addition, the third number may be greater than or equal to the second number, indicating that the people who left based on the initial second number have all returned, or even other people have entered the room.

[0103] S306: Subtract each body surface temperature from the indoor temperature to obtain a corresponding second temperature difference, and count the number of second temperature differences that exceed a second difference threshold.

[0104] S307: If the number is greater than the preset number, the operating frequency of the air conditioner compressor is increased by an equal value.

[0105] In one implementation, if the number is greater than the preset number, a third fixed frequency is determined according to a difference between the third number and the first number;

[0106] After a preset buffer time, the compressor operating frequency of the air conditioner is increased by a third fixed frequency.

[0107] Specifically, the body surface temperature of each person in the current room is subtracted from the indoor temperature to obtain multiple second temperature differences, and then the multiple second temperature differences are compared with the second difference threshold, where the second difference threshold is a critical value for judging whether the second temperature difference is normal. If the second temperature difference exceeds the second difference threshold, it means that the second temperature difference is abnormal, indicating that the person has entered the room from the external environment (hotter environment) and has a higher body surface temperature, and the number of the multiple second temperature differences that exceed the second difference threshold is counted.

[0108] Finally, the statistical number is compared with the preset number. If the statistical number is greater than the preset number, it means that there are more people with higher body surface temperature in the current room, which means that more people have entered the room from the external environment. In order to improve the comfort of personnel and prevent people from catching colds, the compressor of the air conditioner is first kept running at a fixed minimum frequency for a buffer period, and then the operating frequency of the compressor of the air conditioner is slowly increased to slowly improve the cooling effect and prevent the indoor temperature from dropping suddenly. Specifically, the compressor operating frequency can be increased by an equal value, wherein the equal value can be set to 0.5HZ, and in other embodiments, it can also be set to 0.1HZ. In addition, the difference between the third number and the first number in the room at this time is calculated, and the corresponding frequency increase value (i.e., the third fixed frequency) is matched from the preset increase frequency matching table, wherein the increase frequency matching table includes multiple differences and the corresponding frequency increase values. The larger the difference, the larger the frequency increase value, i.e., the third fixed frequency. Finally, the compressor increases the operating frequency by the third fixed frequency in the form of multiple equal values.

[0109] S308: If the number is less than or equal to the preset number, determine whether there is a heat source within the preset range of the person whose second temperature difference exceeds the second difference threshold.

[0110] S309: If there is a heat source, the operating frequency of the air conditioner compressor is kept unchanged.

[0111] Specifically, if the number of people counted is less than or equal to the preset number, it means that there are fewer people with higher body surface temperatures in the room, and there is a possibility of misjudgment. Then, the thermal images within the preset range of the people whose second temperature difference exceeds the second difference threshold are obtained by using an infrared thermal imager, and then the preset color recognition tool is used to perform color recognition on the thermal images within the preset range, and the recognized color is used to determine whether there is a heat source within the preset range. For example, red and pink colors in the thermal image represent higher temperatures, and black, green and blue colors represent lower temperatures.

[0112] If there is a heat source, it means that the person may be using a heat-generating device such as a computer, or may be close to an electrical outlet, which may lead to a false judgment of excessive body temperature. In this case, there is no need to increase the compressor operating frequency, and the air conditioner compressor operating frequency can be kept unchanged. It should be noted that the color recognition tool uses the CVB Color tool.

[0113] It should be noted that if the first temperature difference is not less than the first difference threshold, it means that the current indoor temperature has not reached the preset temperature, and the air conditioner will automatically run at a high frequency until the indoor temperature reaches the preset temperature. This is a prior art and will not be described in detail here.

[0114] The implementation principle of an air-conditioning energy-saving control method in the embodiment of the present application is as follows: obtain the first number of people in the room at the current moment and the second number of people in the room within a preset time before the current moment. If the first number is less than the second number, it means that someone has left the room, and the operating state of the air-conditioning should be adjusted accordingly to reduce energy waste. Then compare the first number with the threshold of the number of people remaining in the room to obtain a first comparison result. The first comparison result is that the first number is less than the threshold of the number of people remaining in the room, indicating that there are fewer people in the current room. Then compare the duration (the duration of the departure of the person in the room) with the smaller duration threshold to obtain a second comparison result, and adjust the operating state of the air-conditioning according to the second comparison result; if the first comparison result is that the first number is not less than the threshold of the number of people remaining in the room, indicating that there are more people in the current room, then compare the duration (the duration of the departure of the person in the room) with the larger duration threshold to obtain a second comparison result, and adjust the operating state of the air-conditioning according to the second comparison result.

[0115] The following is an embodiment of the device of the present application, which can be used to execute the embodiment of the method of the present application. For details not disclosed in the embodiment of the device of the present application, please refer to the embodiment of the method of the present application.

[0116] See also Figure 4 , is a schematic diagram of the structure of an air conditioning energy-saving control device provided in an embodiment of the present application. The air conditioning energy-saving control device can be implemented as all or part of the device through software, hardware or a combination of both. The device 1 includes a number acquisition module 11, a number comparison module 12, a first comparison module 13 and an air conditioning adjustment module 14.

[0117] The number acquisition module 11 is used to acquire a first number of people in the room at the current moment, and acquire a second number of people in the room within a preset time period before the current moment;

[0118] A headcount comparison module 12, configured to compare the first headcount with the second headcount;

[0119] A first comparison module 13 is used to compare the first number with a threshold of the number of people remaining in the room to obtain a first comparison result if the first number is less than the second number;

[0120] The air conditioning adjustment module 14 is used to count in real time the duration of maintaining the first quantity unchanged, and compare the duration with the corresponding duration threshold according to the first comparison result to obtain a second comparison result, and adjust the operating state of the air conditioning according to the second comparison result.

[0121] Optionally, the air conditioning adjustment module 14 is specifically used for:

[0122] Real-time statistics are collected on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is less than the standard duration.

[0123] If the second comparison result is that the duration is greater than the duration threshold, the compressor operating frequency of the air conditioner is reduced to the first fixed frequency;

[0124] If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

[0125] Optionally, the air conditioning adjustment module 14 is further used for:

[0126] If the second comparison result is that the duration is greater than the duration threshold, determining the first fixed frequency according to the first quantity;

[0127] The compressor operating frequency of the air conditioner is reduced to a first fixed frequency.

[0128] Optionally, the air conditioning adjustment module 14 is further used for:

[0129] Real-time statistics are generated on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is greater than or equal to the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is greater than the standard duration.

[0130] If the second comparison result is that the duration is greater than the duration threshold, the compressor operating frequency of the air conditioner is reduced to a second fixed frequency;

[0131] If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

[0132] Optionally, the air conditioning adjustment module 14 is further used for:

[0133] If the second comparison result is that the duration is greater than the duration threshold, determining a second fixed frequency according to the first quantity;

[0134] After maintaining the compressor operating frequency of the air conditioner for a preset time, it is reduced to a second fixed frequency, and the second fixed frequency is greater than the first fixed frequency.

[0135] Optional, such as Figure 5 As shown, the device 1 also includes a temperature reduction confirmation module 15, which specifically includes:

[0136] Obtaining the indoor temperature of the room, calculating a first temperature difference between the indoor temperature and a preset temperature, and if the first temperature difference is less than a first difference threshold, obtaining a third number of people currently in the room, and obtaining the body surface temperature of each person;

[0137] Subtract each body surface temperature from the indoor temperature to obtain a corresponding second temperature difference, and count the number of second temperature differences exceeding the second difference threshold;

[0138] If the number is greater than the preset number, the operating frequency of the air conditioner compressor is increased by an equal value;

[0139] If the number is less than or equal to the preset number, it is determined whether there is a heat source within the preset range of the personnel whose second temperature difference exceeds the second difference threshold;

[0140] If there is a heat source, the operating frequency of the air conditioner's compressor remains unchanged.

[0141] Optionally, the temperature reduction confirmation module 15 specifically further includes:

[0142] If the number is greater than the preset number, determining a third fixed frequency according to the difference between the third number and the first number;

[0143] After a preset buffer time, the compressor operating frequency of the air conditioner is increased by a third fixed frequency.

[0144] It should be noted that the air-conditioning energy-saving control device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example when executing the air-conditioning energy-saving control method. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the air-conditioning energy-saving control device provided in the above embodiment and the air-conditioning energy-saving control method embodiment belong to the same concept, and the implementation process thereof is detailed in the method embodiment, which will not be repeated here.

[0145] The embodiment of the present application further discloses a computer-readable storage medium, and the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, an air conditioning energy-saving control method of the above embodiment is adopted.

[0146] Among them, the computer program can be stored in a computer-readable medium, the computer program includes computer program code, the computer program code can be in the form of source code, object code, executable file or certain middleware, etc. The computer-readable medium includes any entity or device that can carry the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the computer-readable medium includes but is not limited to the above-mentioned components.

[0147] Among them, through this computer-readable storage medium, an air conditioning energy-saving control method of the above embodiment is stored in a computer-readable storage medium, and is loaded and executed on a processor to facilitate the storage and application of the above method.

[0148] An embodiment of the present application further discloses an electronic device, in which a computer program is stored in a computer-readable storage medium. When the computer program is loaded and executed by a processor, the above-mentioned air conditioning energy-saving control method is adopted.

[0149] The electronic device may be a desktop computer, a laptop computer, a cloud server or other electronic device, and the electronic device includes but is not limited to a processor and a memory. For example, the electronic device may also include input and output devices, a network access device, and a bus.

[0150] Among them, the processor can adopt a central processing unit (CPU). Of course, according to actual usage, other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. can also be adopted. The general-purpose processor can adopt a microprocessor or any conventional processor, etc., and this application does not impose any restrictions on this.

[0151] Among them, the memory can be an internal storage unit of the electronic device, such as a hard disk or memory of the electronic device, or it can be an external storage device of the electronic device, such as a plug-in hard disk, smart memory card (SMC), secure digital card (SD) or flash memory card (FC) equipped on the electronic device, and the memory can also be a combination of an internal storage unit and an external storage device of the electronic device. The memory is used to store computer programs and other programs and data required by the electronic device. The memory can also be used to temporarily store data that has been output or is to be output, and this application does not impose any restrictions on this.

[0152] Among them, through this electronic device, an air conditioning energy-saving control method of the above embodiment is stored in the memory of the electronic device, and is loaded and executed on the processor of the electronic device for easy use.

[0153] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. An air conditioning energy-saving control method, characterized in that: include: Obtain a first number of people in the room at the current moment, and obtain a second number of people in the room within a preset time period before the current moment; comparing the first amount to the second amount; If the first number is less than the second number, comparing the first number with the threshold of the number of people remaining in the room to obtain a first comparison result; The duration for maintaining the first quantity unchanged is counted in real time, the duration is compared with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and the operating state of the air conditioner is adjusted according to the second comparison result.

2. The air conditioning energy saving control method according to claim 1, characterized in that: The real-time counting of the duration of maintaining the first quantity unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air conditioner according to the second comparison result, includes: Real-time statistics are generated on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is less than the threshold of the number of people remaining in the room, the duration is compared with the duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is less than the standard duration. If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a first fixed frequency; If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

3. The air conditioning energy saving control method according to claim 2, characterized in that: If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a first fixed frequency, including: If the second comparison result is that the duration is greater than the duration threshold, determining a first fixed frequency according to the first number; The operating frequency of the compressor of the air conditioner is reduced to the first fixed frequency.

4. The air conditioning energy saving control method according to claim 3, characterized in that: The real-time counting of the duration of maintaining the first quantity unchanged, comparing the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjusting the operating state of the air conditioner according to the second comparison result, includes: Real-time statistics are generated on the duration of maintaining the first number unchanged. If the first comparison result is that the first number is greater than or equal to a threshold of the number of people remaining in the room, the duration is compared with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and the duration threshold is greater than a standard duration. If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a second fixed frequency; If the second comparison result is that the duration is less than or equal to the duration threshold, the operating frequency of the compressor of the air conditioner is kept unchanged.

5. The air conditioning energy saving control method according to claim 4, characterized in that: If the second comparison result is that the duration is greater than the duration threshold, reducing the compressor operating frequency of the air conditioner to a second fixed frequency, including: If the second comparison result is that the duration is greater than the duration threshold, determining a second fixed frequency according to the first number; After maintaining the compressor operating frequency of the air conditioner for a preset time, it is reduced to the second fixed frequency, and the second fixed frequency is greater than the first fixed frequency.

6. The air conditioning energy saving control method according to claim 1, characterized in that: After adjusting the operating state of the air conditioner according to the second comparison result, the method further includes: Acquire the indoor temperature of the room, calculate a first temperature difference between the indoor temperature and a preset temperature, and if the first temperature difference is less than a first difference threshold, acquire a third number of people currently in the room, and acquire the body surface temperature of each person; Subtract each of the body surface temperatures from the indoor temperature to obtain a corresponding second temperature difference, and count the number of the second temperature differences exceeding a second difference threshold; If the number is greater than the preset number, the operating frequency of the compressor of the air conditioner is increased by an equal value; If the number is less than or equal to the preset number, determining whether there is a heat source within the preset range of the person whose second temperature difference exceeds the second difference threshold; If the heat source exists, the operating frequency of the compressor of the air conditioner is kept unchanged.

7. The air conditioning energy saving control method according to claim 6, characterized in that: If the number is greater than the preset number, the operating frequency of the compressor of the air conditioner is increased by an equal value, including: If the number is greater than the preset number, determining a third fixed frequency according to the difference between the third number and the first number; After a preset buffering time, the compressor operating frequency of the air conditioner is increased by the third fixed frequency.

8. An air conditioning energy-saving control device, characterized in that: include: A number acquisition module (11) is used to acquire a first number of people in the room at a current moment, and to acquire a second number of people in the room within a preset time period before the current moment; A headcount comparison module (12), configured to compare the first headcount with the second headcount; A first comparison module (13) is used to compare the first number with a threshold of the number of people remaining in the room to obtain a first comparison result if the first number is smaller than the second number; The air conditioning adjustment module (14) is used to count in real time the duration for maintaining the first number unchanged, compare the duration with a duration threshold corresponding to the first comparison result to obtain a second comparison result, and adjust the operating state of the air conditioning according to the second comparison result.

9. A computer-readable storage medium having a computer program stored therein, characterized in that: When the computer program is loaded and executed by a processor, the method according to any one of claims 1 to 7 is adopted.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor loads and executes the computer program, the method according to any one of claims 1 to 7 is adopted.

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