CN115614942A - Fresh air control method, fresh air control device and fresh air conditioner - Google Patents
Fresh air control method, fresh air control device and fresh air conditioner Download PDFInfo
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- CN115614942A CN115614942A CN202211128154.XA CN202211128154A CN115614942A CN 115614942 A CN115614942 A CN 115614942A CN 202211128154 A CN202211128154 A CN 202211128154A CN 115614942 A CN115614942 A CN 115614942A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000004590 computer program Methods 0.000 claims description 11
- 238000005265 energy consumption Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 22
- 229910002092 carbon dioxide Inorganic materials 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002592 echocardiography Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- F24F11/62—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
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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
- 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
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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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
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/14—Activity of occupants
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- 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
Abstract
The invention relates to the technical field of fresh air equipment, in particular to a fresh air control method, a fresh air control device and a fresh air conditioner. The fresh air control method comprises the following steps: acquiring speed information and angle information of each indoor moving target; determining CO according to the speed information and the angle information of each moving object 2 A concentration threshold; when CO is present in indoor environment 2 Concentration value of CO 2 And when the concentration is at the threshold value, controlling the fresh air motor to start to operate. The fresh air control method, the fresh air control device and the fresh air conditioner provided by the invention not only can meet the requirement of indoor personnel on fresh air, but also can reduce fresh air loss and improve the utilization rate of the fresh air so as to save energy and reduce the energy consumption of a fresh air motorThe life is lost.
Description
Technical Field
The invention relates to the technical field of fresh air equipment, in particular to a fresh air control method, a fresh air control device and a fresh air conditioner.
Background
Fresh air conditioner or other equipment with fresh air function can realize the renewal of room air through the mode of introducing outdoor new trend or discharging indoor foul wind, improves the room air quality.
The existing fresh air conditioner or other equipment with fresh air function generally judges the quality of indoor air by analyzing the indoor carbon dioxide concentration, and starts and stops control on the fresh air function, for example: when carbon dioxide concentration exceeded the setting value, it is unhealthy to judge for the room air, opened the new trend function, however, is great when indoor personnel's activity, and the speed that produces carbon dioxide is very fast, and the new trend is not enough, and the room air needs very long time to reach comfortable air quality after the new trend function is opened, is difficult to reach comfortable air quality even, and user experience is poor.
In summary, how to overcome the above-mentioned defects of the existing fresh air control method is a technical problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a fresh air control method, a fresh air control device and a fresh air conditioner, so as to solve the technical problem of insufficient fresh air existing in the fresh air control method in the prior art.
The fresh air control method provided by the invention comprises the following steps:
acquiring speed information and angle information of each indoor moving target;
determining CO according to the speed information and the angle information of each moving target 2 A concentration threshold;
when CO is in indoor environment 2 Concentration value up to the CO 2 And when the concentration is at the threshold value, controlling the fresh air motor to start to operate.
Compared with the prior art, the invention has the beneficial effects that:
when the indoor personnel activity is large, CO is generated 2 Has high speed and high fresh air demand, and can convert CO into CO 2 The concentration threshold is set to a smaller value to enable the new wind turbine to generate CO in an indoor environment 2 When the concentration value is lower, the air conditioner is opened, fresh air is sent indoors, namely, the fresh air is sent in advance, so that the greater demand of indoor personnel on the fresh air is met, the indoor air quality is achieved and maintained as soon as possible, and the situation that the air conditioner is comfortable is avoided as far as possibleThe problem of insufficient fresh air can improve the user experience; correspondingly, when the indoor human activity is small, CO is produced 2 Has low speed and low demand on fresh air, and can convert CO into CO 2 The concentration threshold is set to a large value so that the fresh air motor can generate CO in the indoor environment 2 When the concentration reaches a higher value, the air conditioner is opened again to send fresh air indoors, and at the moment, CO is generated by indoor personnel 2 Is slow, so even if the fresh air motor is started, CO in the indoor environment 2 The concentration is higher, also can satisfy the demand of indoor personnel to the new trend, but also can reduce the new trend loss, promotes the new trend utilization ratio to the energy can be saved, and can reduce the life-span loss to the new trend motor.
As an implementation manner, the step of determining the CO2 concentration threshold value according to the speed information and the angle information of each moving object includes:
distinguishing a human moving target, a pet moving target and an object moving target in the moving targets according to the angle information of each moving target;
generating motion information of each human body operation target according to the speed information corresponding to each human body motion target;
analyzing the motion state of each human body motion target according to the motion information of each human body motion target;
and determining a CO2 concentration threshold according to the motion state of each human motion target.
Has the advantages of realizing the CO under different requirements 2 And (4) accurately determining a concentration threshold value.
As an implementation mode, the CO is determined according to the motion state of each human motion object 2 A concentration threshold step comprising:
when the motion state of the human motion target is high-intensity motion, determining CO 2 The concentration threshold value is 800 ppm-850 ppm;
when the motion state of the human motion object is low-intensity motion, determining CO 2 The concentration threshold value is 930ppm to 950ppm.
The novel air conditioner has the beneficial effects that the requirement of indoor personnel on fresh air can be met, and the utilization rate of the fresh air can be increased.
As an implementation manner, the step of acquiring speed information and angle information of each moving object in the room includes:
controlling a Doppler radar to detect moving targets in a room, and detecting speed information and angle information of each moving target.
The method has the beneficial effects that the Doppler radar can be utilized to realize the accurate detection of the speed information and the angle information of each moving target based on the Doppler frequency shift principle.
As an implementable embodiment, the method further comprises:
acquiring the indoor per capita area;
determining the fresh air volume of the fresh air motor according to the indoor per capita area;
and controlling the fresh air motor to operate according to the fresh air quantity.
The novel air conditioner has the beneficial effect that the novel air conditioner can better adapt to the requirement of indoor personnel on fresh air volume.
As an implementation manner, the step of acquiring the indoor per capita area includes:
acquiring the area of an indoor space;
and calculating to obtain the indoor per capita area according to the indoor space area and the number of the human body moving targets.
The indoor per capita area acquisition method has the beneficial effect that the indoor per capita area can be accurately acquired.
As an implementation manner, the step of acquiring the speed information and the angle information of each moving object in the room is performed every preset time period.
Has the beneficial effects that the CO is adjusted according to the actual indoor condition 2 Concentration threshold value and fresh air volume, thereby, the demand of indoor personnel to fresh air volume is adapted.
The invention provides a fresh air control device, which comprises:
the acquisition module is used for acquiring speed information and angle information of each indoor moving target;
a concentration threshold determination module for determining CO according to the speed information and angle information of each moving object 2 A concentration threshold;
and the control module is used for controlling the fresh air motor to start to operate when the CO2 concentration value in the indoor environment reaches the CO2 concentration threshold value.
The present invention provides an air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the above method.
The invention also provides a computer-readable storage medium, which stores a computer program that, when read and executed by a processor, implements the above-described method.
The fresh air control device, the fresh air conditioner and the computer readable storage medium provided by the invention have the same technical effects as the fresh air control method.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a first schematic flowchart of a fresh air control method according to an embodiment of the present invention;
FIG. 2 is a second schematic flow chart of a fresh air control method according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a fresh air control device according to an embodiment of the present invention.
Description of reference numerals:
301-an obtaining module; 302-a concentration threshold determination module; 303-control module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Fig. 1 is a schematic flow chart of a fresh air control method according to an embodiment of the present invention, where the method includes:
and S102, acquiring speed information and angle information of each indoor moving target.
Wherein the moving object only includes an object having a certain speed, such as: the moving objects of human body, pet and object can be directly eliminated.
S104, determining CO according to the speed information and the angle information of each moving object 2 And (4) a concentration threshold value.
Specifically, the human moving target, the pet moving target and the object moving target can be distinguished according to the angle information of each moving target, so that misjudgment is reduced; on the basis, motion information of each human motion target can be generated according to the speed information of each human motion target, the larger the speed is, the larger the activity amount is, and then the motion state of each human motion target is obtained through analysis; because the carbon dioxide amount generated by the human body under different motion states is different, the CO can be determined according to the motion state of each human motion target 2 The generation speed of the air conditioner is increased to judge the degree of demand of indoor personnel on fresh air, and then CO under different demands can be realized 2 And (4) accurately determining a concentration threshold value.
S106, when the CO in the indoor environment 2 Concentration value of CO 2 And when the concentration is at the threshold value, controlling the fresh air motor to start to operate.
In particular, CO may be utilized 2 Sensor real-time detection of CO in indoor environment 2 Concentration value and real-time CO acquisition 2 CO detected by the sensor 2 Concentration value, current CO 2 Concentration value and the above CO 2 And comparing the concentration threshold value to control the opening time of the fresh air motor. When the indoor personnel activity is large, CO is generated 2 Has higher speed and higher demand for fresh air, and can convert CO into CO 2 The concentration threshold is set to a smaller value to enable the new wind turbine to generate CO in an indoor environment 2 When the concentration value is lower, the air conditioner is started, and fresh air is sent indoors, namely, the fresh air is sent in advance, so that the larger demand of indoor personnel on the fresh air is met, the comfortable air quality is achieved and maintained indoors as soon as possible, the problem of insufficient fresh air is avoided as far as possible, and the user experience degree can be improved; correspondingly, when the indoor human activity is small, CO is produced 2 Has low speed and low fresh air demand, and can convert CO into CO 2 The concentration threshold is set to a large value so that the fresh air motor can generate CO in the indoor environment 2 When the concentration reaches a higher value, the air conditioner is opened again to send fresh air indoors, and at the moment, CO is generated by indoor personnel 2 Is slow, so even if the fresh air motor is started, CO in the indoor environment 2 The concentration is higher, also can satisfy the demand of indoor personnel to the new trend, but also can reduce the new trend loss, promotes the new trend utilization ratio to the energy can be saved, and can reduce the life-span loss to the new trend motor.
Specifically, the motion states of the indoor persons can be classified into two types: high intensity exercise and low intensity exercise, when the exercise state of the human body moving object is high intensity exercise, CO is generated 2 When the fresh air demand is large, the CO can be used 2 The concentration threshold value is set to any value from 800ppm (eight hundred parts per million) to 850ppm, so that the large requirement of indoor personnel on fresh air can be met; when the motion state of the human motion object is low-intensity motion, CO is generated 2 Is slow, and when the demand for fresh air is small, CO can be used 2 The concentration threshold value is set to be any value of 930 ppm-950 ppm, so that the small requirement of indoor personnel on fresh air can be met, and the utilization rate of the fresh air can be increased.
The step S102 may specifically include: the method comprises the steps of controlling a Doppler radar to detect moving targets in a room, and detecting speed information and angle information of each moving target, so that the Doppler radar can be used for accurately detecting the speed information and the angle information of each moving target based on the Doppler frequency shift principle.
The method provided by the embodiment may further include the following steps:
a1, acquiring the indoor per capita area.
The indoor space area can be obtained firstly, and then the indoor per capita area can be calculated according to the indoor space area and the number of the human body moving targets. Specifically, the Doppler radar can be controlled to detect the indoor space area and the human body moving targets, and the number of the human body moving targets is obtained by counting the human body moving targets.
And A2, determining the fresh air volume of the fresh air motor according to the indoor per capita area.
The fresh air change times in unit time corresponding to the indoor per-capita area can be calculated according to the indoor per-capita area, and the fresh air quantity of the fresh air motor can be determined according to the calculated fresh air change times in unit time.
And A3, controlling the operation of the fresh air motor according to the fresh air quantity.
The fresh air motor is controlled to operate in order to correspond to the fresh air volume of the actual indoor per capita area, and the fresh air motor can better adapt to the requirement of indoor personnel on the fresh air volume.
Preferably, in the operation process of the fresh air control method, step S102 is executed once every preset time interval to adjust CO according to the actual indoor condition 2 Concentration threshold value and fresh air volume, thereby, the demand of indoor personnel to fresh air volume is adapted.
The traditional pulse radar measures and positions the distance of an object within a range by transmitting pulses and receiving echoes, but people, pets and objects cannot be distinguished in the mode. On the basis of a ranging radar, the Doppler radar can detect a target with speed in space based on a Doppler frequency shift principle, and can distinguish people, objects and pets by measuring angles, and meanwhile, the motion state of the target can be judged by analyzing the information of the moving target.
Doppler radar switchAfter starting, acquiring information of the area of the room, the number of people in the room and the motion state of each person, calculating the area of the average person and judging the motion state of the person; the information is uploaded to a main control MCU, and the main control MCU acquires CO in real time 2 Data detected by the sensor. The main control MCU can be based on CO 2 The opening time and the fresh air quantity of the fresh air motor are controlled by data, the average area of people and the motion state of people detected by the sensors.
By adopting the method provided by the embodiment to control the fresh air motor, the following effects can be produced: the fresh air volume is adjusted according to the actual indoor condition, so that insufficient fresh air volume or fresh air waste can not be caused; judging the fresh air opening time according to the indoor actual conditions, CO 2 The concentration threshold value changes along with the actual change, the fresh air is changed in time, and the use experience is good; the method of measuring speed and angle can distinguish people and pets and reduce misjudgment.
Fig. 2 is a schematic flow chart of a fresh air control method according to an embodiment of the present invention, where the method includes:
s201, controlling the Doppler radar to be started;
s202, controlling the Doppler radar to detect the indoor area;
s203, controlling the speed information V1 and V2 … Vn and the angle information phi 1 and phi 2 … phi n of each moving target in the Doppler radar detection chamber;
s204, distinguishing a human body moving target, a pet moving target and an object moving target;
s205, regenerating the motion information V1' and V2' … Vn ' of the human motion target;
s206, carrying out classification statistical processing on V1' and V2' … Vn ' according to different preset speed values, and judging the motion state of each human motion target; updating the data every 0.5 h;
s207, setting different fresh air opening CO according to the motion state of each human motion target 2 A concentration threshold;
s208, calculating to obtain the indoor per-capita area according to the indoor area and the number of the human motion targets;
s209, calculating the fresh air change times and fresh air volume in unit time; updating the data every 0.5 h;
s210, obtaining CO 2 CO detected by sensor 2 A concentration value;
and S211, controlling the fresh air motor to operate.
Fig. 3 is a fresh air control device provided in this embodiment, which includes:
an obtaining module 301, configured to obtain speed information and angle information of each indoor moving target;
a concentration threshold determination module 302 for determining CO according to the speed information and the angle information of each moving object 2 A concentration threshold;
and the control module 303 is configured to control the fresh air motor to start to operate when the CO2 concentration value in the indoor environment reaches a CO2 concentration threshold value.
The fresh air control device provided by the embodiment has the advantages that the control module 303 can control the fresh air motor to be in CO when the activity of indoor personnel is large 2 The air conditioner is started when the concentration value is low, and fresh air is sent in advance, so that the large requirement of indoor personnel on the fresh air can be met, the comfortable air quality can be achieved and maintained as soon as possible, the problem of insufficient fresh air is avoided as far as possible, and the user experience can be improved; in addition, the control module 303 can also control the fresh air motor to be in CO when the activity of indoor personnel is small 2 Open when concentration is higher again, not only can satisfy the demand of indoor personnel to the new trend, but also can reduce the new trend loss, promote the new trend utilization ratio to the energy can be saved, and can reduce the life-span loss to the new trend motor.
The concentration threshold determining module 302 may specifically include a distinguishing unit, a generating unit, an analyzing unit, and a determining unit, where the distinguishing unit may distinguish a human moving object, a pet moving object, and an object moving object in the moving objects according to angle information of each moving object; the generating unit can generate the motion information of each human body operation target according to the speed information corresponding to each human body motion target; the analysis unit can analyze the motion state of each human body motion target according to the motion information of each human body motion target; the determining unit can determine the CO2 concentration threshold value according to the motion state of each human body motion target.
The obtaining module 301 may control the doppler radar to detect moving targets in the room, and detect speed information and angle information of each moving target.
A fresh air quantity determining module can be additionally arranged and can determine the fresh air quantity of the fresh air motor according to the indoor per capita area; on the basis, the control module can control the operation of the fresh air motor according to the fresh air volume determined by the fresh air volume determining module and the concentration threshold determined by the concentration threshold determining module.
A calculation module can be additionally arranged and can acquire the indoor space area; and calculating to obtain the indoor per capita area according to the indoor space area and the number of the human body moving targets.
The embodiment also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium stores a computer program, and when the computer program is read and executed by the processor, the method is realized.
The present embodiment further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is read and executed by a processor, the computer program implements the processes of the foregoing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Of course, those skilled in the art will understand that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device to perform operations through a computer, and the programs may be stored in a computer-readable storage medium, and when executed, the programs may include the processes of the above method embodiments, where the storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A fresh air control method is characterized by comprising the following steps:
acquiring speed information and angle information of each indoor moving target;
determining CO according to the speed information and the angle information of each moving target 2 A concentration threshold;
when CO is in indoor environment 2 Concentration value up to the CO 2 And when the concentration is at the threshold value, controlling the fresh air motor to start to operate.
2. The fresh air control method according to claim 1, wherein the CO is determined according to speed information and angle information of each moving object 2 A concentration threshold step comprising:
distinguishing a human moving target, a pet moving target and an object moving target in the moving targets according to the angle information of each moving target;
generating motion information of each human body operation target according to the speed information corresponding to each human body motion target;
analyzing the motion state of each human body motion target according to the motion information of each human body motion target;
determining CO according to the motion state of each human motion target 2 And (4) a concentration threshold value.
3. The fresh air control method according to claim 2, wherein the CO is determined according to the motion state of each human motion target 2 A concentration threshold step comprising:
when the motion state of the human motion object is high-intensity motion, determining CO 2 The concentration threshold value is 800 ppm-850 ppm;
when the motion state of the human motion target is low-intensity motion, determining CO 2 The concentration threshold value is 930ppm to 950ppm.
4. A fresh air control method according to any one of claims 1 to 3, wherein the step of acquiring speed information and angle information of each moving object in the room comprises:
controlling a Doppler radar to detect moving targets in a room, and detecting speed information and angle information of each moving target.
5. The fresh air control method according to claim 2 or 3, characterized by further comprising:
acquiring the indoor per capita area;
determining the fresh air volume of the fresh air motor according to the indoor per capita area;
and controlling the fresh air motor to operate according to the fresh air quantity.
6. The fresh air control method according to claim 5, wherein the step of obtaining indoor per capita area comprises:
obtaining the area of an indoor space;
and calculating to obtain the indoor per capita area according to the indoor space area and the number of the human body moving targets.
7. A fresh air control method according to any one of claims 1 to 3 wherein the step of obtaining speed information and angle information of each moving object in the room is performed every predetermined time period.
8. A fresh air control device is characterized by comprising:
the acquisition module is used for acquiring speed information and angle information of each indoor moving target;
a concentration threshold determination module for determining CO according to the speed information and angle information of each moving object 2 A concentration threshold;
and the control module is used for controlling the fresh air motor to start to operate when the CO2 concentration value in the indoor environment reaches the CO2 concentration threshold value.
9. An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program when read and executed by the processor implementing the method of any one of claims 1-7.
10. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the method of any one of claims 1-7.
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