CN107062531B - Air-conditioner control method and air conditioner based on physical activity - Google Patents

Air-conditioner control method and air conditioner based on physical activity Download PDF

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Publication number
CN107062531B
CN107062531B CN201710134628.4A CN201710134628A CN107062531B CN 107062531 B CN107062531 B CN 107062531B CN 201710134628 A CN201710134628 A CN 201710134628A CN 107062531 B CN107062531 B CN 107062531B
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human body
calculation result
air
activity
threshold
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CN107062531A (en
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陈志斌
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GD Midea Air Conditioning Equipment Co Ltd
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Guangdong Midea Refrigeration Equipment Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2120/00—Control inputs relating to users or occupants
    • F24F2120/10—Occupancy
    • F24F2120/14—Activity of occupants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a kind of air-conditioner control method and air conditioner based on physical activity, wherein method includes: the infrared movable signal that human body real-time change in multiple periods is acquired by pyroelectric infrared sensor；Calculate according to infrared movable signal of preset first algorithm to human body real-time change in each period and obtain corresponding first calculated result, and the first calculated result is compared with preset first threshold and second threshold；It extracts the first calculated result in each period and is more than or equal to corresponding first duration of first threshold and the first calculated result more than or equal to corresponding second duration of second threshold；The movable amplitude situation of human body is determined according to the first duration and the second duration, and then the working condition of air-conditioning equipment is controlled according to the operating mode of the movable amplitude situation of human body and air-conditioning equipment.Accurately physical activity amplitude is identified as a result, improves the consistency of air-conditioning work state and physical activity.

Description

Air conditioner control method based on human body activity and air conditioner
Technical Field
The invention relates to the technical field of control of air conditioners, in particular to an air conditioner control method based on human body activities and an air conditioner.
Background
The pyroelectric infrared sensor is an instrument for sensing infrared rays and converting the infrared rays into electric signals, and mainly comprises a sensor detection element, a Fresnel lens, an interference optical filter, a field effect tube matcher and the like. The sensor detecting element is made of a high thermoelectric material, two detecting elements with reversed polarities connected in series are arranged in each detector to inhibit interference generated by high temperature, a Fresnel lens is generally arranged in front of the detectors to improve the sensitivity of the detectors, and a field effect tube is mainly used for completing impedance conversion.
In daily production and life, the pyroelectric infrared sensor is widely applied, for example, the pyroelectric infrared sensor is applied to an air conditioner, so that the air conditioner can select a working state according to the detected activity of a human body.
However, in the related art, due to the limitations of the structure and the operation principle of the pyroelectric infrared sensor, the calculation of the activity amount can only be performed when the human body performs a large-scale activity, and the calculation of the activity amount of the human body in a small amount cannot be effectively performed, so that the air conditioner cannot select a proper operation state to operate under the condition that the human body is in a small amount of activity, which affects the quality of the service provided by the air conditioner.
Disclosure of Invention
The object of the present invention is to solve at least to some extent one of the above mentioned technical problems.
Therefore, a first objective of the present invention is to provide a method for controlling an air conditioner based on human body activity, which can accurately identify the human body activity amplitude, and improve the consistency between the working state of the air conditioner and the human body activity.
The second purpose of the invention is to provide an air conditioner.
In order to achieve the above object, a first embodiment of the present invention provides a method for controlling an air conditioner based on human body activities, the air conditioner including an outdoor unit casing enclosing an air inlet and an air outlet, and an air duct communicating the air inlet and the air outlet, a fan and a heat exchanger being disposed in the air duct, the method comprising the steps of: acquiring infrared moving signals of real-time change of a human body in a plurality of time periods through a pyroelectric infrared sensor; calculating an infrared mobile signal changing in real time of a human body in each time period according to a preset first algorithm to obtain a corresponding first calculation result, and comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold; extracting a first time length corresponding to the first calculation result which is greater than or equal to the first threshold value and a second time length corresponding to the first calculation result which is greater than or equal to the second threshold value in each time interval; calculating the first time length and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval, and summing all the second calculation results to generate a third calculation result; and comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body, and further controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
According to the air conditioner control method based on human body activities, the amplitude condition of the human body activities is calculated and analyzed through the infrared moving signals, collected by the pyroelectric infrared sensor, of the human body changes in real time in a plurality of time intervals, the operation state of the air conditioner is determined according to the amplitude condition of the human body activities, therefore, the pyroelectric infrared sensor is broken through, the limitation of the activity amount when the amplitude of the human body activities is small cannot be obtained, the human body activity amount can be effectively calculated no matter whether the human body activities are large-amplitude activities or small-amplitude activities, the consistency of the working state of the air conditioner and the human body activities is improved, and the service quality of the air conditioner is improved.
In order to achieve the above object, according to a second aspect of the present invention, an air conditioner includes an outdoor unit casing enclosing an air inlet and an air outlet, and an air duct communicating the air inlet and the air outlet, and having a fan and a heat exchanger disposed therein, the air conditioner including: the acquisition module is used for acquiring infrared mobile signals of real-time change of a human body in a plurality of time periods through the pyroelectric infrared sensor; the first acquisition module is used for calculating the infrared mobile signals changing in real time of the human body in each time interval according to a preset first algorithm to acquire a corresponding first calculation result; the first comparison module is used for comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold; the extracting module is used for extracting a first time length corresponding to the first threshold value and a second time length corresponding to the second threshold value, wherein the first calculation result is greater than or equal to the first time length in each time interval; the second obtaining module is used for calculating the first time length and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval; the generating module is used for summing all the second calculation results to generate a third calculation result; the second comparison module is used for comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body; and the control module is used for controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
According to the air conditioner provided by the embodiment of the invention, the amplitude condition of human body activity is calculated and analyzed through the infrared moving signals which are acquired by the pyroelectric infrared sensor and change in real time for the human body in a plurality of time intervals, and the running state of the air conditioner is determined according to the amplitude condition of the human body activity, so that the limitation of the activity amount when the amplitude of the human body activity is small cannot be obtained by breaking the pyroelectric infrared sensor, the activity amount of the human body can be effectively calculated no matter whether the human body activity is large-amplitude activity or small-amplitude activity, the consistency of the working state of the air conditioning equipment and the human body activity is improved, and the service quality of the air conditioning equipment is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a human activity-based air conditioner control method according to an embodiment of the present invention;
FIG. 2(a) is a graphical representation of an infrared movement signal according to one embodiment of the present invention;
FIG. 2(b) is a graphical representation of an infrared shift signal according to another embodiment of the present invention;
fig. 3 is a flowchart of a human activity-based air conditioner control method according to another embodiment of the present invention;
fig. 4 is a flowchart of a human activity-based air conditioner control method according to still another embodiment of the present invention;
fig. 5 is a block diagram of an air conditioner according to an embodiment of the present invention;
fig. 6 is a block diagram of an air conditioner according to another embodiment of the present invention; and
fig. 7 is a block diagram of an air conditioner according to still another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control method of an air conditioner based on human body activity and an air conditioner according to an embodiment of the present invention will be described with reference to the accompanying drawings.
In practical application, due to the limitation of the structure and the working principle of the pyroelectric infrared sensor, only a large amount of activity of the human body can be calculated, for example, the amount of activity of the human body in a walking state is calculated, and when the human body is in a small amount of activity, the amount of activity of the human body cannot be calculated.
However, in some application scenarios, such as hot summer, even if the human body performs a small motion such as swinging head or waving hands, there is still a need for the air conditioner to start the cooling operation state.
Therefore, in order to improve the service quality of the air conditioner, the air conditioner can not only accurately identify the large-amplitude action of the human body, but also identify the small-amplitude action, and the running state of the air conditioner is controlled according to the activity amplitude of the human body.
The following describes a control method of an air conditioner based on human body activities according to an embodiment of the present invention, with reference to a specific embodiment, where the air conditioner includes an outdoor unit casing, the outdoor unit casing is surrounded by an air inlet and an air outlet, and an air duct communicating the air inlet and the air outlet, and a fan and a heat exchanger are disposed in the air duct. Fig. 1 is a flowchart of a human activity-based air conditioner control method according to an embodiment of the present invention.
As shown in fig. 1, the air conditioner control method based on human body activity includes:
s101, acquiring infrared mobile signals of real-time change of a human body in a plurality of time intervals through a pyroelectric infrared sensor.
Specifically, in order to avoid an error caused by collecting only infrared moving signals of real-time human body infrared changes in a short period of time, for example, when a user drags the floor in winter with a low temperature, even if the infrared moving signals of real-time human body changes in the period of time are detected to be strong, the infrared moving signals cannot be used as a basis for determining the operation state of the air conditioner, in the embodiment of the invention, the infrared moving signals of real-time human body changes in a plurality of periods of time are collected through the pyroelectric infrared sensor.
The pyroelectric infrared sensor mainly utilizes the principle of the pyroelectric effect to complete the induction of infrared radiation, wherein the pyroelectric effect refers to a phenomenon that current or electric charge is accumulated when electrons in a heat energy object subjected to the infrared radiation of a human body move from a high temperature to a low temperature. Specifically speaking, fresnel lens accepts and gathers the infrared radiation that the object that awaits measuring released, and then, the infrared radiation that pyroelectric infrared sensor transmitted fresnel lens converts the signal of telecommunication into to, carry out required processing to the signal of telecommunication by signal processing circuit, so that the treater in the air conditioner carries out the calculation of activity etc. according to the signal of telecommunication of transmitting.
S102, calculating the infrared mobile signals changing in real time of the human body in each time interval according to a preset first algorithm to obtain a corresponding first calculation result, and comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold.
In the embodiment of the invention, because a plurality of time periods corresponding to the acquired infrared moving signals changing in real time of the human body are discontinuous, in order to improve the analysis efficiency, the infrared moving signals changing in real time of the human body in each time period are respectively analyzed.
Specifically, a first algorithm capable of evaluating the change intensity of the human body activity in a calculation time interval is preset, the infrared mobile signals of the real-time change of the human body in each time interval are calculated according to the preset first algorithm, and after a corresponding first calculation result is obtained, the first calculation result is compared with a preset first threshold and a preset second threshold.
And in the actual execution process, if the first calculation result is greater than or equal to the second threshold, the action at the current moment is a large-amplitude action, and if the first calculation result is greater than or equal to the first threshold and less than the second threshold, the action at the current moment is a small-amplitude action.
It should be noted that, in different application scenarios, the first algorithm may be a different algorithm, and as a possible implementation manner, the first algorithm may be a differential algorithm.
In this embodiment, the characteristic values of the human body activity, such as the infrared movement signal X and the time T, are extracted according to the infrared movement signal collected by the pyroelectric sensor and corresponding to the real-time change of the human body in the time period, and then the infrared signal X corresponding to the change in the time period is collected, the differential dX of the infrared signal is calculated, and dX is compared with the first threshold dX1 and the second threshold dX 2.
It should be emphasized that, due to the complexity of the environment where the air conditioner is located, the acquired infrared mobile signal may include various clutter signals, such as infrared waves of a remote controller, and therefore, in order to improve the accuracy of the first calculation result, in an embodiment of the present invention, the infrared mobile signal acquired by the pyroelectric infrared sensor may be further filtered before the infrared mobile signal that changes in real time in each time period is calculated to acquire a corresponding first calculation result.
Certainly, in practical application, in different application scenarios, the infrared mobile signals collected by the pyroelectric infrared sensor can be filtered in different manners.
As a possible implementation manner, clutter signals in the infrared mobile signal are removed through the digital filtering module to obtain a stable infrared mobile signal, wherein the digital filtering module may be an amplitude limiting filtering module, an arithmetic average filtering module, a recursive average filtering module, or the like.
S103, extracting a first time length corresponding to the first calculation result which is greater than or equal to the first threshold value and a second time length corresponding to the first calculation result which is greater than or equal to the second threshold value in each time interval.
It can be understood that, in order to improve the accuracy of determining the activity amplitude of the human body within a certain time period and avoid the influence of a certain individual large-amplitude motion or small-amplitude motion within the time period, in the embodiment of the present invention, the duration of the large-amplitude motion and the small-amplitude motion within the corresponding time period are respectively recorded.
Specifically, a first time length corresponding to the first calculation result being greater than or equal to a first threshold value and a second time length corresponding to the first calculation result being greater than or equal to a second threshold value in each time interval are extracted.
For example, as shown in fig. 2(a), after a first calculation result corresponding to an infrared movement signal acquired by a pyroelectric infrared sensor in a certain period of time is obtained, a first duration corresponding to a first threshold value or longer in the period of time is obtained, where the first duration is a sum of durations of T11, T12, and T13, and the first calculation result is a second duration corresponding to a second threshold value or longer, where the second duration is T21.
And S104, calculating the first time length and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval, and summing all the second calculation results to generate a third calculation result.
Specifically, a second algorithm is set for different influences on the operating state of the air conditioner according to the small-amplitude action and the large-amplitude action in advance, so that the first time length and the second time length are calculated according to the preset second algorithm to obtain a second calculation result corresponding to each time interval, and all the second calculation results are summed to generate a third calculation result.
It should be noted that, in different application scenarios, the second algorithm may be different, for example, the second algorithm may be a summation algorithm, a product algorithm, or the like.
And S105, comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body, and further controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
It can be understood that the third threshold determined by the size of the human activity is calibrated in advance according to a large amount of experimental data, so that the third result is compared with the preset third threshold to determine the activity amplitude condition of the human body, if the third calculation result is greater than or equal to the third threshold, it is indicated that the human body is in a large-amplitude activity state, and it may be necessary to control the air conditioning equipment to perform related operations of cooling on the basis of the current environment, and if the third calculation result is less than the third threshold, it is indicated that the human body is in a small-amplitude activity state, it may be necessary to control the air conditioning equipment to perform related operations of heating on the basis of the current environment, and the like.
In summary, according to the air conditioner control method based on human body activity in the embodiment of the present invention, the amplitude of human body activity is calculated and analyzed by using the infrared movement signals collected by the pyroelectric infrared sensor and varying in real time by the human body in a plurality of time periods, based on a data analysis technique, so as to determine the operation state of the air conditioner according to the amplitude of human body activity, thereby breaking through the limitation that the pyroelectric infrared sensor cannot acquire the activity amount when the amplitude of human body activity is small, and effectively calculating the activity amount of human body no matter whether the human body activity is large-amplitude or small-amplitude, thereby improving the consistency between the working state of the air conditioner and the human body activity, and improving the service quality of the air conditioner.
Based on the above embodiments, it can be understood that in real life, the large-amplitude human body activity and the small-amplitude human body activity can determine the operation state of the air conditioner, but under the same environmental conditions, if the small-amplitude activity is performed basically, the user needs to perform a long period of time before feeling hotter and needing the cooling service of the air conditioner, and if the large-amplitude activity is performed basically, the user needs to perform a short period of time before feeling hotter and needing the cooling service of the air conditioner, that is, in practical applications, the influence of the small-amplitude activity and the large-amplitude activity on the operation state of the air conditioner is different.
For a clearer explanation, how to calculate the first time duration and the second time duration according to a preset second algorithm to obtain a second calculation result corresponding to each time interval is described below by taking into account a specific implementation process of calculating and obtaining the second calculation result when the influence of the small-amplitude motion and the large-amplitude motion on the operation state of the air conditioning equipment is different, and the air conditioner control method based on the human body activity according to the embodiment of the present invention is exemplified.
Fig. 3 is a flowchart of a human activity-based air conditioner control method according to another embodiment of the present invention, as shown in fig. 3, the method including:
s201, acquiring infrared mobile signals of real-time change of a human body in a plurality of time intervals through a pyroelectric infrared sensor.
S202, calculating the infrared mobile signals changing in real time of the human body in each time interval according to a preset first algorithm to obtain a corresponding first calculation result, and comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold.
S203, extracting a first time length corresponding to the first calculation result being greater than or equal to the first threshold value and a second time length corresponding to the first calculation result being greater than or equal to the second threshold value in each time interval.
It should be noted that, in the description of steps S201 to S203 in this embodiment, reference is made to the above description of steps S101 to S103, and the implementation principle is similar, which is not described herein again.
S204, a first weight corresponding to the first duration and a second weight corresponding to the second duration are obtained.
Specifically, in the present embodiment, a first weight corresponding to the first time period and a second weight corresponding to the second time period are obtained in advance according to the difference in influence of the small-amplitude motion and the large-amplitude motion on the operating state of the air conditioning apparatus, and the first weight is smaller than the second weight in a normal case.
S205, calculating the first weight, the first duration, the second weight and the second duration according to a preset second algorithm to obtain a second calculation result corresponding to each time interval.
In the embodiment of the present invention, the first weight, the first duration, the second weight, and the second duration are calculated according to a preset second algorithm to obtain a second calculation result corresponding to each time period, for example, the first duration and the first weight are multiplied respectively, and the second duration and the second weight are multiplied respectively and then summed.
For example, when the first weight value is α, the second weight value is β, the first duration is T1, and the second duration is T2, the second calculation result obtained according to the second algorithm is H α T1+ β T2.
Thus, the determination of the amplitude of the human activity is related not only to the duration of the execution of the activity, but also to the weight of the amplitude of the activity, and even if the duration of a small-amplitude activity is longer than the duration of a large-amplitude activity, the amplitude of the human activity during that period may be a large-amplitude activity, etc., and sometimes the duration of a small-amplitude activity may be a small-amplitude activity, etc.
For example, with continued reference to fig. 2(a), although the sum of the first time length T11, T12, and T13 of the small-amplitude activity exceeding the first threshold is greater than the second time length T21, since the weight value of the second time length is greater, in this scenario, the human activity is determined to be a large-amplitude activity.
On the other hand, as shown in fig. 2(b), although the first time period T1 of the small-amplitude activity exceeding the first threshold is short, the human body activity is determined to be the small-amplitude activity in this scene because the second time period of the large-amplitude activity not exceeding the second threshold is not present.
And S206, summing all the second calculation results to generate a third calculation result.
Specifically, in order to accurately judge the human body activity amplitude in a plurality of time periods, all the second calculation results are summed to generate a third calculation result.
And S207, comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body, and further controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
In an embodiment of the present invention, if the comparison result shows that the third calculation result is smaller than the third threshold, it is determined that the human body is in a small-amplitude activity condition, and therefore, the air conditioning equipment is controlled to perform a temperature-raising operation and the like. For example, the air conditioning equipment that controls the cooling mode to work raises the outlet air temperature and reduces the outlet air speed, or the air conditioning equipment that controls the heating mode to work raises the outlet air temperature and increases the outlet air speed.
In another embodiment of the present invention, if the comparison result shows that the third calculation result is greater than or equal to the third threshold, it is determined that the human body is in a large-scale activity condition, and therefore, the air conditioning device is controlled to perform a cooling operation, etc. For example, the air conditioning equipment that controls the cooling mode to work lowers the outlet air temperature and increases the outlet air speed, or the air conditioning equipment that controls the heating mode to work lowers the outlet air temperature and decreases the outlet air speed.
To more fully describe the air conditioner control method based on human body activity according to the embodiment of the present invention, in a specific application scenario, an implementation process of the air conditioner control method based on human body activity is exemplified below, where in this example, the first calculation result is dX, the second calculation result is H, the first algorithm is a differential algorithm, the second algorithm is H α T1+ β T2, the first threshold is dX1, the second threshold is dX2, the third threshold is Σ H2, the first duration is T1, and the second duration is T2.
In this example, as shown in fig. 4, an infrared movement signal X (301) of a human body changing in real time in each time interval is acquired, dX (302) is acquired through a differential algorithm after the infrared movement signal is processed by a digital aluminum foil, whether dX is greater than or equal to a first threshold value dX1(303) is judged, a first time duration T1 in which dX is greater than or equal to the first threshold value dX1 is counted (304), whether dX is greater than or equal to a second threshold value dX2(305) is judged, and a second time duration T2 in which dX is greater than or equal to the second threshold value dX2 is counted (306).
After the first time period and the second time period are acquired, the human activity amount H is calculated according to the formula H α T1+ β T2 (307), wherein α is the weight coefficient of the first time period and β is the weight coefficient of the second time period, wherein it is emphasized that T2 is 0 if there is no second time period in which dX is equal to or greater than a second threshold value dX 2.
Further, the amplitude of the human body activity can be determined (308) from the acquired human body activity amount H, that is, the human body activity amount H can be compared with a human body activity amount threshold H1, and if the human body activity amount H is larger than the human body activity amount threshold H1, the human body activity is determined as a large amplitude activity (309), and if the human body activity amount H is not larger than the human body activity amount threshold H1, the human body activity is determined as a inc.
And comparing (311) the obtained human activity amount H of each time interval after summing with a third threshold value sigma H2, if the obtained human activity amount H is greater than or equal to the third threshold value, judging that the human activity amount is a large activity amount (312), controlling an air conditioner (313) according to an air conditioner control strategy corresponding to the large activity amount, and if the obtained human activity amount H is less than the third threshold value, judging that the human activity amount is a small activity amount (314), and controlling the air conditioner (315) according to an air conditioner control strategy corresponding to the small activity amount.
In summary, the air conditioner control method based on human body activity according to the embodiment of the present invention determines the human body activity based on the difference between the influence of the small-amplitude motion and the influence of the large-amplitude motion on the operation state of the air conditioner, further improves the accuracy of identifying the human body activity amplitude, and improves the consistency between the air conditioner operation state and the human body activity.
In order to achieve the above embodiments, the present invention further provides an air conditioner, the air conditioner includes an outdoor unit casing, the outdoor unit casing encloses an air inlet and an air outlet, and an air duct communicating the air inlet and the air outlet, a fan and a heat exchanger are disposed in the air duct, fig. 5 is a block diagram of the air conditioner according to an embodiment of the present invention, and as shown in fig. 5, the air conditioner includes: the device comprises an acquisition module 110, a first acquisition module 120, a first comparison module 130, an extraction module 140, a second acquisition module 150, a generation module 160, a second comparison module 170 and a control module 180.
The acquisition module 110 is configured to acquire an infrared mobile signal of a human body changing in real time in multiple time periods through a pyroelectric infrared sensor.
The first obtaining module 120 is configured to calculate, according to a preset first algorithm, the infrared mobile signal of which the human body changes in real time in each time interval to obtain a corresponding first calculation result.
In an embodiment of the present invention, the first obtaining module 120 performs a differential calculation on the infrared moving signal of the real-time change of the human body in each time interval to obtain a corresponding differential result.
Fig. 6 is a block diagram of an air conditioner according to another embodiment of the present invention, as shown in fig. 6, on the basis of fig. 5, the air conditioner further includes a third obtaining module 190, wherein the third obtaining module 190 is configured to remove a clutter signal in the infrared moving signal through a digital filtering module to obtain a stable infrared moving signal.
A first comparing module 130, configured to compare the first calculation result with a preset first threshold and a second threshold, where the second threshold is greater than the first threshold.
The extracting module 140 is configured to extract a first duration corresponding to the first calculation result being greater than or equal to the first threshold and a second duration corresponding to the first calculation result being greater than or equal to the second threshold in each time period.
The second obtaining module 150 is configured to calculate the first duration and the second duration according to a preset second algorithm to obtain a second calculation result corresponding to each time interval.
And a generating module 160, configured to sum all the second calculation results to generate a third calculation result.
And the second comparing module 170 is configured to compare the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body.
And the control module 180 is used for controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
It should be noted that the foregoing explanation of the air conditioner control method based on human body activities is also applicable to the air conditioner of the embodiment of the present invention, and the implementation principle is similar, and is not repeated herein.
In summary, in the air conditioner according to the embodiment of the present invention, the amplitude of the human body activity is calculated and analyzed by using the infrared movement signals, which are collected by the pyroelectric infrared sensor and change in real time, of the human body in a plurality of time periods based on a data analysis technique, so as to determine the operation state of the air conditioner according to the amplitude of the human body activity, thereby breaking through the limitation that the pyroelectric infrared sensor cannot acquire the activity amount when the amplitude of the human body activity is small, and effectively calculating the activity amount of the human body no matter whether the human body activity is large-amplitude or small-amplitude, thereby improving the consistency between the working state of the air conditioner and the human body activity, and improving the service quality of the air conditioner.
Fig. 7 is a block diagram of an air conditioner according to still another embodiment of the present invention, and as shown in fig. 7, the second obtaining module 150 includes a first obtaining unit 151 and a second obtaining unit 152 based on that shown in fig. 5.
The first obtaining unit 151 is configured to obtain a first weight corresponding to the first duration and a second weight corresponding to the second duration.
The second obtaining unit 152 is configured to calculate the first weight, the first duration, the second weight, and the second duration according to a preset second algorithm to obtain a second calculation result corresponding to each time interval.
In an embodiment of the present invention, the second comparing module 170 is further configured to determine that the human body is in a small-amplitude activity condition when the comparison result shows that the third calculation result is smaller than the third threshold, so that the control module 180 controls the air conditioning equipment operating in the cooling mode to increase the air outlet temperature and reduce the air outlet speed, or controls the air conditioning equipment operating in the heating mode to increase the air outlet temperature and increase the air outlet speed.
In an embodiment of the present invention, the second comparing module 170 is further configured to determine that the human body is in a large-amplitude activity condition when the comparison result shows that the third calculation result is greater than or equal to the third threshold, so that the control module 180 controls the air conditioning equipment operating in the cooling mode to decrease the air outlet temperature and increase the air outlet speed, or controls the air conditioning equipment operating in the heating mode to decrease the air outlet temperature and decrease the air outlet speed.
It should be noted that the foregoing explanation of the air conditioner control method based on human body activities is also applicable to the air conditioner of the embodiment of the present invention, and the implementation principle is similar, and is not repeated herein.
In summary, the air conditioner according to the embodiment of the present invention determines the human body activity based on the difference between the influence of the small-amplitude motion and the influence of the large-amplitude motion on the operation state of the air conditioning device, thereby further improving the accuracy of identifying the human body activity amplitude and improving the consistency between the air conditioner operation state and the human body activity.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (12)

1. The air conditioner control method based on human body activities is characterized in that the air conditioner comprises an outdoor unit shell, the outdoor unit shell is enclosed to form an air inlet, an air outlet and an air duct communicated with the air inlet and the air outlet, a fan and a heat exchanger are arranged in the air duct, and the air conditioner control method based on human body activities comprises the following steps:
acquiring infrared moving signals of real-time change of a human body in a plurality of time periods through a pyroelectric infrared sensor;
calculating an infrared mobile signal changing in real time of a human body in each time period according to a preset first algorithm to obtain a corresponding first calculation result, and comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold;
extracting a first time length corresponding to the first calculation result which is greater than or equal to the first threshold value and a second time length corresponding to the first calculation result which is greater than or equal to the second threshold value in each time interval;
calculating the first time length and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval, and summing all the second calculation results to generate a third calculation result;
and comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body, and further controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
2. The method as claimed in claim 1, before said calculating the infrared movement signal of the real-time change of the human body in each time interval according to the preset first algorithm to obtain the corresponding first calculation result, further comprising:
and removing clutter signals in the infrared mobile signals through a digital filtering module to obtain stable infrared mobile signals.
3. The method of claim 1, wherein the calculating the infrared mobile signal of the real-time change of the human body in each time interval according to the preset first algorithm to obtain the corresponding first calculation result comprises:
and carrying out differential calculation on the infrared mobile signals changing in real time of the human body in each time interval to obtain corresponding differential results.
4. The method of claim 1, wherein the calculating the first duration and the second duration according to a preset second algorithm to obtain a second calculation result corresponding to each time interval comprises:
acquiring a first weight corresponding to the first time length and a second weight corresponding to the second time length;
and calculating the first weight, the first time length, the second weight and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time period.
5. The method of claim 1, wherein the comparing the third calculation result with a preset third threshold value to determine an activity level condition of the human body, and further controlling an operating state of an air conditioning device according to the activity level condition of the human body and an operating mode of the air conditioning device comprises:
if the third calculation result is smaller than the third threshold value through comparison, determining that the human body is in a small-amplitude activity condition;
controlling the air conditioning equipment working in the refrigeration mode to raise the air outlet temperature and reduce the air outlet speed; or,
and controlling the air conditioning equipment working in the heating mode to raise the air outlet temperature and increase the air outlet speed.
6. The method of claim 1, wherein the comparing the third calculation result with a preset third threshold value to determine an activity level condition of the human body, and further controlling an operating state of an air conditioning device according to the activity level condition of the human body and an operating mode of the air conditioning device comprises:
if the third calculation result is obtained through comparison and is larger than or equal to the third threshold, determining that the human body is in a large-amplitude activity condition;
controlling the air conditioning equipment working in the refrigeration mode to lower the air outlet temperature and increase the air outlet speed; or,
and the air conditioning equipment controlling the heating mode to work reduces the air outlet temperature and the air outlet speed.
7. An air conditioner, characterized in that, the air conditioner includes outdoor unit casing, outdoor unit casing encloses to have air intake and air outlet to and the wind channel of intercommunication air intake and air outlet be provided with fan and heat exchanger in the wind channel, the air conditioner includes: the acquisition module is used for acquiring infrared mobile signals of real-time change of a human body in a plurality of time periods through the pyroelectric infrared sensor;
the first acquisition module is used for calculating the infrared mobile signals changing in real time of the human body in each time interval according to a preset first algorithm to acquire a corresponding first calculation result;
the first comparison module is used for comparing the first calculation result with a preset first threshold and a second threshold, wherein the second threshold is larger than the first threshold;
the extracting module is used for extracting a first time length corresponding to the first threshold value and a second time length corresponding to the second threshold value, wherein the first calculation result is greater than or equal to the first time length in each time interval;
the second obtaining module is used for calculating the first time length and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval;
the generating module is used for summing all the second calculation results to generate a third calculation result;
the second comparison module is used for comparing the third calculation result with a preset third threshold value to determine the activity amplitude condition of the human body;
and the control module is used for controlling the working state of the air conditioning equipment according to the activity amplitude condition of the human body and the working mode of the air conditioning equipment.
8. The air conditioner according to claim 7, further comprising:
and the third acquisition module is used for removing clutter signals in the infrared mobile signals through the digital filtering module and acquiring stable infrared mobile signals.
9. The air conditioner according to claim 7, wherein the first obtaining module is specifically configured to: and carrying out differential calculation on the infrared mobile signals changing in real time of the human body in each time interval to obtain corresponding differential results.
10. The air conditioner according to claim 7, wherein the second obtaining module comprises:
a first obtaining unit, configured to obtain a first weight corresponding to the first duration and a second weight corresponding to the second duration;
and the second obtaining unit is used for calculating the first weight, the first time length, the second weight and the second time length according to a preset second algorithm to obtain a second calculation result corresponding to each time interval.
11. The air conditioner according to claim 7,
the second comparison module is further configured to determine that the human body is in a small-amplitude activity condition when the third calculation result is smaller than the third threshold value;
the control module is also used for controlling the air conditioning equipment working in the refrigeration mode to raise the air outlet temperature and reduce the air outlet speed when the human body moves in the small range; or,
and the control module is also used for controlling the air conditioning equipment working in the heating mode to raise the air outlet temperature and increase the air outlet speed when the human body is in the small-amplitude activity condition.
12. The air conditioner according to claim 7,
the second comparison module is further configured to determine that the human body is in a large-amplitude activity condition when the third calculation result is obtained through comparison and is greater than or equal to the third threshold;
the control module is also used for controlling the air conditioning equipment working in the refrigeration mode to reduce the air outlet temperature and increase the air outlet speed when the human body is in the condition of large-amplitude activity; or the control module is also used for controlling the air conditioning equipment working in the heating mode to reduce the air outlet temperature and the air outlet speed when the human body is in the condition of large-amplitude activity.
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