CN112361565B - Air conditioner control method, air conditioner control device and air conditioner - Google Patents
Air conditioner control method, air conditioner control device and air conditioner Download PDFInfo
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- CN112361565B CN112361565B CN202011126307.8A CN202011126307A CN112361565B CN 112361565 B CN112361565 B CN 112361565B CN 202011126307 A CN202011126307 A CN 202011126307A CN 112361565 B CN112361565 B CN 112361565B
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
- G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
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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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Abstract
The application discloses air conditioner control method, air conditioner control device and air conditioning equipment, including following step: continuously acquiring a depth value image of an air conditioner blowing coverage area, wherein the depth value image is provided with a plurality of pixel points; dividing the depth value image into more than two blocks, and acquiring the depth value difference of each pixel point in each block in two adjacent frames of depth value images; and adjusting the air outlet parameters of the air conditioner to the space regions corresponding to the blocks according to the depth value difference of each pixel point. The air conditioner control method can judge the activity state of personnel through the change of the depth value in each area, and air conditioner air outlet parameters are respectively set for different areas.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner control method, an air conditioner control device and air conditioning equipment.
Background
The air conditioner is electrical equipment often used in daily life of people, and generally, some control strategies are set to regulate and control the air outlet parameters of the air conditioner due to the requirements of energy conservation, emission reduction and the like, for example, control strategies such as temperature cascade control, variable air volume system temperature cascade control strategy and frequency conversion unit dehumidification condition control are set, and the specific air outlet parameters of the air conditioner are controlled.
However, the control strategy in the prior art cannot monitor the distribution and movement of people in the space, and it often happens that strong cold air blown out by the air conditioner directly blows to the human body, which causes discomfort to the human body and causes diseases, such as gout, cold, and the like.
How to control the air-out parameter of air conditioner according to personnel's distribution in the space and the removal condition to improve user's body and feel comfort level, avoid the strong wind directly to blow the human body, be present the problem that awaits a solution urgently.
Disclosure of Invention
The invention provides an air conditioner control method, an air conditioner control device and air conditioning equipment, which can adjust the wind direction and the wind power in real time, avoid strong cold wind and the like from directly blowing a human body, and optimize the user experience of a user.
In order to solve the above problems, the present invention provides an air conditioner control method, including the steps of: continuously acquiring a depth value image of an air conditioner blowing coverage area, wherein the depth value image is provided with a plurality of pixel points; dividing the depth value image into more than two blocks, and acquiring the depth value difference of each pixel point in each block in two adjacent frames of depth value images; and adjusting the air outlet parameters of the air conditioner to the space region corresponding to each block according to the depth value difference of each pixel point.
Optionally, the method for adjusting the air-out parameter of the air conditioner to the space region corresponding to each block according to the depth value difference of each pixel point includes the following steps: setting the state value of each block as a first state value or a second state value according to the depth value difference of each pixel point in each block, wherein the first state value corresponds to that personnel leaves or no personnel exists in a space region corresponding to the block, and the second state value corresponds to that personnel enters or personnel is located in the space region corresponding to the block; and adjusting the air outlet parameters of the space region corresponding to the pair of blocks of the air conditioner according to the state value of each block.
Optionally, the method further includes: the depth value difference of each pixel point in the two adjacent frames of depth value images is obtained by subtracting the depth value of the corresponding pixel point in the previous frame of depth value image from the depth value of the pixel point in the current frame of depth value image; the setting method of the state value of each block comprises the following steps: acquiring a first number and a second number, wherein the first number is the number of pixel points with depth value differences larger than a first preset value in each block, the second number is the number of pixel points with depth value differences smaller than a second preset value in each block, the first preset value is larger than or equal to 0, and the second preset value is smaller than or equal to 0; when the first number is larger than a first state threshold value, setting the state value of the block as a first state value; and when the second number is larger than the second state threshold value, setting the state value of the block as a second state value.
Optionally, the state value of the block is kept unchanged until the state value is switched between the first state value and the second state value.
Optionally, the method further includes: and when the continuous times of the state values of the blocks reach the threshold times or the continuous time reaches the threshold time, controlling the air conditioner to adjust the blowing parameters.
Optionally, the method for adjusting the air outlet parameter of the space region corresponding to the pair of blocks of the air conditioner according to the state value of each block includes: the first state value corresponds to the improvement of the air output of the space region corresponding to the block; the second state value corresponds to reducing the air output of the space region corresponding to the block.
Optionally, the method further comprises the following steps: counting the proportion of the number of the blocks with the state value being the second state value to the total number of the blocks; and adjusting the air outlet intensity according to the proportion, wherein the higher the proportion is, the larger the air outlet intensity is.
Optionally, according to the ratio, the method for adjusting the air-out intensity includes: setting a plurality of proportional intervals according to a plurality of adjustable air outlet intensities of the air conditioner, wherein the proportional intervals correspond to the air outlet intensities one by one; and adjusting to the corresponding air outlet intensity according to the proportion interval in which the proportion is positioned.
Optionally, in the initialization state, the air conditioner is controlled to discharge air to the space region corresponding to each block according to the same air discharge parameters.
Optionally, the depth value image is acquired using a TOF sensor.
The technical scheme of the invention also provides an air conditioner control device, which comprises: at least one TOF sensor for continuously acquiring a depth value image of a wind power coverage area of the air conditioner; the processor is connected to the depth sensor and used for controlling air outlet parameters of the air conditioner according to the depth value image; and a memory storing an executable application program which, when executed by the processor, performs the air conditioner control method.
The technical scheme of the invention also provides air conditioning equipment, which comprises: an air conditioner main machine; the air conditioner control device is described above.
Optionally, the detection field of view of the TOF sensor covers an air outlet coverage area of the air conditioner host.
Optionally, the TOF sensor is installed at an air outlet of the air conditioner main unit, and the direction of the TOF sensor is consistent with that of the air outlet.
Optionally, a plurality of wind direction adjustment structures are arranged at the air outlet of the air conditioner main unit, and each wind direction adjustment structure is used for adjusting the air outlet direction independently.
According to the air conditioner control method, the activity state of personnel in each region is judged through the depth value image, and the air outlet parameters of each region are set according to the activity state of the personnel, so that the condition that the personnel are directly blown by strong wind is avoided, and the body feeling comfort level of the personnel is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of an air conditioner control method according to an embodiment of the present application;
FIG. 2a is a block division diagram according to an embodiment of the present application;
FIG. 2b is a block diagram illustrating the partitioning according to an embodiment of the present application;
fig. 3 is a schematic flowchart of an air conditioner control method according to an embodiment of the present application;
fig. 4 is a schematic structural view of an air conditioning apparatus according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an air conditioning apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application. The embodiments described below and their technical features may be combined with each other without conflict.
The following describes an air conditioning control method, an air conditioning control device, and an air conditioning apparatus according to the present invention in further detail with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic flow chart illustrating steps of the air conditioner control method according to an embodiment of the present invention.
In this embodiment, there is provided an air conditioner control method including the steps of:
step S11: and continuously acquiring a depth value image of an air conditioner blowing coverage area.
The depth value image is provided with N pixel points, wherein N is an integer larger than zero; each pixel point corresponds to a location point in real space, and the depth value of each pixel point corresponds to the distance of the location point. The depth value image may be a data matrix including N depth values arranged in an array, or may be a real image obtained by rendering the depth values of the pixel points in different colors.
The depth value image may be acquired by a TOF sensor or a dual RGB camera, or the like. And continuously acquiring a depth value image in the air conditioner blowing coverage area at a certain period in the continuous operation process of the air conditioner.
In this embodiment, the TOF sensor is used to obtain the depth value image, and compared with the RGB camera, the TOF camera does not need to rely on ambient light. A single TOF sensor can be employed to acquire a depth value image of the entire spatial region; for a scene with a large space area, a plurality of TOF sensors can be used for synchronously acquiring a depth value image, and the depth value image of the whole space area is acquired through splicing.
In some embodiments, the depth value image is obtained at a certain frequency, for example, preferably at a frequency that at least 20 frames of depth value images can be obtained in one minute, so that the air outlet condition of the air conditioner can be adjusted in time. It should be noted that, the capturing frequency of the depth value image also needs to be limited to prevent too many depth value images from being captured, which results in too much resource usage and high power consumption.
Step S12: and dividing the depth value image into more than two blocks, and acquiring the depth value difference of each pixel point in each block in two adjacent frames of depth value images.
And dividing the depth value image into a plurality of blocks, correspondingly dividing the area in the actual detection view field into a plurality of space areas, wherein the plurality of blocks correspond to the plurality of space areas one by one.
In some embodiments, the depth value of the previous frame is subtracted from the depth value of the next frame to obtain the depth value difference. With the continuous acquisition of depth value images, the depth value difference of each pixel point is continuously refreshed. The depth values change when human activity occurs in the spatial region. Relative to the depth value of the previous frame, when the depth value becomes larger, the corresponding person leaves; when the depth value becomes smaller, it corresponds to a person entering.
In other embodiments, the depth value difference may be obtained by subtracting the depth value of the next frame from the depth value of the previous frame. The judgment mode of the personnel activity is correspondingly adjusted, and when the depth value is larger than the depth value of the previous frame, the personnel enters correspondingly; when the depth value becomes smaller, it corresponds to a person leaving.
In some embodiments, the depth value image of the wind coverage area is divided into m × n blocks arranged in an array, where m and n are integers greater than zero. The number of pixels in each block is the same. When the resolution size of the TOF sensor 103 is ═ col × row, the total number of pixels in each block is the ratio of the resolution to the number of blocks.
In some embodiments, the number and size of blocks of the depth value image may be divided as desired. In the image area with the same size, the more the divided blocks are, the less the number of pixels in each block is, the more accurate the judgment on the movement condition of the personnel in the space area corresponding to the block is, and the more precise the control on the air outlet parameter of the space area corresponding to the image area is.
In some embodiments, different block sizes may be set for different spatial regions in the wind power coverage area according to the installation position of the air conditioner, so as to adjust the sensitivity of wind power control in the actual regulation and control process, and reduce the calculation resources occupied by the wind power control.
Please refer to fig. 2a, which is a diagram illustrating block division according to an embodiment of the present invention.
In this embodiment, for the middle area of the depth value image, the number of pixels in the tile is small, and the middle area is divided into smaller tiles a11 to a26, which have a higher tile distribution density. The block density in the peripheral area is reduced, for example, in the four corner areas of the depth value image, 4 blocks a1 to a4 with the largest size are arranged, and slightly smaller blocks a7 to A8 are arranged on the two sides.
Please refer to fig. 2b, which is a diagram illustrating block division according to another embodiment of the present invention.
In this embodiment, the depth value image is divided into four equal-sized blocks B1 through B4 in the horizontal direction.
Fig. 2a and fig. 2b are merely examples of the block division, and those skilled in the art may perform reasonable block division according to actual needs, and the present invention is not limited thereto.
Step S13: and adjusting the air outlet parameters of the air conditioner to the space regions corresponding to the blocks according to the depth value difference of each pixel point.
The air outlet parameters comprise air outlet strength, air outlet direction, air outlet frequency and the like.
Because the depth value difference can correspond to the personnel motion condition in the space region, the intelligent control of the air conditioner air outlet parameters based on the personnel motion condition can be realized according to the depth value change condition in a certain block. For the region that has personnel to get into, can reduce air-out intensity, reduce frequency or through adjusting the air-out direction in order to avoid carrying out at least one in various air-out parameter adjustment such as air-out to this region to the strong wind of reduction air conditioner, cold wind directly blow the human body, cause the human discomfort. And for the region where the person leaves, at least one of various air outlet parameter adjustments including recovering default air outlet parameters, improving air outlet strength, improving air outlet frequency or performing air outlet on the region by adjusting the air outlet direction can be performed. The depth value image is used as the basis of intelligent control, the method is independent of ambient light, a large amount of computing resources and a deep learning framework do not need to be constructed, and the occupation and the consumption of the resources are small.
In some embodiments, the air conditioner performs undifferentiated air outlet on the spatial regions corresponding to the blocks in the initialization state. It should be noted that the indiscriminate air outlet means that the spatial regions corresponding to the blocks can be sequentially and uniformly exposed according to the change of the air outlet direction, and the wind power is the wind power set by the user and is not adjusted by extra wind power.
In some embodiments, the control method is applied to a household small air conditioner. Actually, for a large industrial air conditioner, the corresponding air outlet parameter control can be performed based on the method.
Fig. 3 is a schematic flow chart of an air conditioner control method according to another embodiment of the present invention.
In this embodiment, the step S13 further includes a step S301 and a step S302.
Step S301: and setting the state value of each block as a first state value or a second state value according to the depth value difference of each pixel point in each block.
The first state value corresponds to the condition that people leave or no people exist in the space area corresponding to the block, and the second state value corresponds to the condition that people enter or people exist in the space corresponding to the block. In some embodiments, the first state value may be set to 1 and the second state value may be set to 0.
In the initial starting state, all blocks are set to have the same state value by default, and the state values can be all the first state values or all the second state values. And subsequently, refreshing and setting the state value of each block along with continuous acquisition of the depth value image.
Taking a scheme of obtaining a depth value difference of each pixel point in two adjacent depth value images by subtracting a depth value of a corresponding pixel point in a previous depth value image from a depth value of the pixel point in a current frame depth value image as an example, the method for setting the state value of each block includes: acquiring a first number and a second number, wherein the first number is the number of pixel points with depth value difference larger than a first preset value in each block, the second number is the number of pixel points with depth value difference smaller than a second preset value in each block, the first preset value is larger than or equal to 0, and the second preset value is smaller than or equal to 0; and when the first number is greater than a first state threshold value, setting the state value of the block as a first state value, and when the second number is greater than a second state threshold value, setting the state value of the block as a second state value.
In some embodiments, the first preset value is 0. And when the depth value difference is larger than a first preset value 0, the depth value of the pixel point is increased in the depth value image of the next frame, and the fact that a person leaves the position of the pixel point is indicated. In order to avoid noise signal interference, the first preset value may be greater than 0, so as to ensure that a person leaves a corresponding position when the depth value difference of the pixel point is greater than the first preset value. The first preset value can be set according to the requirement of detection precision.
In some embodiments, the second preset value is 0. When the depth value difference is smaller than a second preset value 0, the depth value of the pixel point is reduced in the depth value image of the next frame, and it is indicated that a person enters the position of the pixel point. In order to avoid noise signal interference, the first preset value may be smaller than 0, so as to ensure that a person leaves the corresponding position when the depth value difference of the pixel point is smaller than the first preset value. The second preset value can be set according to the requirement of detection precision.
Because the space area corresponding to a single pixel point is too small, when whether a person enters or leaves a certain block is judged, the person usually corresponds to a plurality of pixel points, and the motion state of the person can be accurately judged only if the depth value difference of the plurality of pixel points in the certain block is larger than a first preset value or smaller than a second preset value.
Taking the number of the pixel points with the depth value difference larger than a first preset value in each block as a first number, and taking the number of the pixel points with the depth value difference smaller than a second preset value in each block as a second number; when the first number is larger than a first state threshold value, setting the state value of the block as a first state value corresponding to the fact that people leave or no people exist in the block; and when the second number is larger than the second state threshold value, setting the state value of the block as a second state value corresponding to the fact that personnel enters or the personnel exist in the block. The first state threshold and the second state threshold may be set according to the number of pixel points normally occupied by a person under the detection field of view.
In one embodiment, the setting is performed according to parameters of an angle of view H · V and a resolution M · N of the TOF sensor, a maximum distance measurement capability Dm, a block division manner M · N, and a rectangular area a · b occupied by a person of a minimum height to be detected, where H is a vertical angle of view, V is a horizontal angle of view, M is a horizontal resolution, N is a vertical resolution, M is a number of blocks in a horizontal direction, N is a number of blocks in a vertical direction, a is a width of a person, and b is a height of the person. State threshold
In one embodiment, the TOF sensor has an angle of view of 65 ° x 45 °, a resolution of 320 x 240, a maximum range finding capability of 2.5m, a block division of 4 x 3, and a minimum person height to be detected of 0.6m x 0.3 m; the number of the calculated pixel points is
The first state threshold and the second state threshold may be equal to the state threshold P, or may be adjusted according to an actual situation on the basis of the state threshold P.
Typically, the first state threshold and the second state threshold are the same. In some special cases, when a certain block is easily determined to be the first state value and the second state value at the same time, the first state threshold value may be made larger than the second state threshold value to determine that the second state value takes precedence.
The setting method of the state value can avoid the change of the state value of the block under the condition that the interference object enters the detection view field. For example, when a small bug flies through a space region of the wind power coverage area, a pixel point of the block records the situation, and a depth value difference larger than a first preset value exists between two adjacent frames, but because the second number of the pixel points in the block is smaller than a second state threshold value, the block cannot be set to be in a second state, and the air outlet parameter of the block does not need to be adjusted, so that the power consumption problem caused by invalid adjustment can be avoided.
In some embodiments, for different blocks, the first state threshold and the second state threshold of the corresponding block may also be set respectively, so as to have different detection accuracies for the human activity states in different blocks. For example, for a smaller sized tile, a lower first state threshold and second state threshold may be set, while for a larger sized tile, the first state threshold and second state threshold are relatively larger. For example, areas with infrequent changes of people or short stay time of people, such as corridors, balconies, etc., may be set with larger-sized blocks and higher thresholds; and areas with frequent personnel changes and long personnel stay time, such as a sofa area, a restaurant area and the like, are provided with smaller-sized blocks and lower thresholds.
In some embodiments, when the first state threshold and the second state threshold are set, the setting may be performed according to actual scene requirements. Generally, the larger the threshold value is, the more accurate the determination of the movement of the person in the direction of the space area corresponding to the block is, but the sensitivity of the air conditioner to the wind control of the space area corresponding to the block is affected. Therefore, in an actual control process, the threshold value needs to be set reasonably by considering both the accuracy and the sensitivity of the determination. For example, when people are in a sofa area, the sofa area is usually in a rest state, the action amplitude is small, the stay time is long, and the body temperature of a human body is relatively stable, at this time, a lower first state threshold value and a lower second state threshold value should be set in a block corresponding to the sofa area, so that the air conditioner is more sensitive to wind control at the position, and discomfort of the human body caused by strong wind or cold wind blowing directly on the human body is prevented. For another example, in a restaurant area, people are usually in a eating state, the stay time is long, and the restaurant is usually arranged close to the kitchen, so the temperature of people in the restaurant is usually high, which causes the corresponding block of the restaurant area to be provided with a higher first state threshold and a higher second state threshold, so as to reduce the sensitivity of the air conditioner to the wind control of the restaurant, and thus save the power consumption.
After the state value of a certain block is set as the first state value or the second state value, under the condition that no personnel state changes, the depth difference value in the subsequent detection process is 0 or between the second preset value and the first preset value, under the condition, the state value of the block is kept unchanged until the state value is switched between the first state value and the second state value at a certain moment.
For example, when the first number of a certain block meets the requirement of a first state value and a person leaves, the state value of the block is set as the first state value, and in the subsequent detection process, the depth value difference does not meet the requirement of a second state value, which indicates that no person exists in the space region again, and the space region does not have the person, and the first state value is kept unchanged; and switching the state value of the block to a second state value until the second number of the block at a certain subsequent time meets the requirement of the second state value and indicates that personnel enter the space area again. Similarly, when the second number of a certain block meets the requirement of a second state value and a person enters the space area, setting the state value of the block as the second state value, wherein the depth value difference does not meet the requirement of the first state value in the subsequent detection process, which indicates that no person leaves the space area, the person always exists in the space area, and the second state value is kept unchanged; and switching the state value of the block to the first state value until the first number of the block at a certain subsequent moment meets the first state value requirement, which indicates that the personnel leave the space area.
After the status value of each block is set, step S302 is performed.
Step S302: and adjusting the air outlet parameters of the space region corresponding to the block of the air conditioner pair according to the state value of each block.
Specifically, the first state value is corresponding to the increase of the air output of the space region corresponding to the block; the second state value corresponds to reducing the air output of the space region corresponding to the block.
In the initial state, because the state values of the blocks are the same, the air conditioner is controlled to adopt the same air outlet parameters to exhaust air in the space areas.
In some embodiments, the air output in the same time can be increased by increasing at least one of the air output strength, the air output frequency or the air output direction; at least one air outlet parameter in various modes such as air outlet and the like can be prevented from being adjusted in the region by reducing the air outlet strength and the air outlet frequency or adjusting the air outlet direction, the air outlet quantity in the same time is reduced, and the discomfort of a human body caused by that strong wind and cold wind of the air conditioner directly blow the human body is reduced.
In some embodiments, for a block where a person enters or exists, the wind direction of the air conditioner is controlled to avoid the space area corresponding to the block, and the temperature of the space area is kept, and meanwhile, the person is prevented from being directly blown by air of the air conditioner. The avoidance here means that the air-out direction is adjusted to be directed to a direction other than the region. For example, if the space region corresponding to the block of the first state value is located in the middle of the whole space region, the wind outlet direction is kept towards the left part or the right part of the whole space, and the left-right swinging wind is stopped, or the wind outlet direction is kept towards the upper part or the lower part of the space region, and then the up-down swinging wind is stopped.
In other embodiments, the first state value and the second state value may also correspond to other air conditioner air outlet parameters. For example, for a heating air conditioner, because the power consumption of the air conditioner is large in the heating process, the first state value can be corresponding to the reduction of the air output and the reduction of the power consumption of the air conditioner, and the second state value can be corresponding to the increase of the air output and the rapid increase of the temperature of the area where the personnel are located.
The technical personnel in the field can set the air outlet parameters corresponding to the first state value and the second state value according to actual requirements.
In some embodiments, further comprising: when the number of times that the state value of the block lasts reaches the threshold value number of times or the duration time reaches the threshold value time, the air conditioner is controlled to adjust the blowing parameters, and therefore the problems that the power consumption of the air conditioner is improved and the service life of the air conditioner is shortened due to the fact that people frequently enter and exit and the air outlet parameters of the air conditioner are frequently adjusted under the condition that the state value is frequently switched can be solved. For example: and only when the state values detected by the n frames are the first state values or when the time of the first state values is maintained for a long enough time, adjusting the air outlet parameters of the air conditioner to the space region corresponding to the block to the air outlet parameters corresponding to the first state values. Under the conditions of rapid entrance and rapid departure of personnel, the air outlet parameters of the air conditioner are not adjusted.
In some embodiments, the method further comprises: counting the proportion of the number of blocks with the state value being the second state value in the total number of all blocks; and adjusting the air outlet intensity of the air conditioner according to the proportion, wherein the higher the proportion is, the greater the air outlet intensity is.
In one embodiment, the wind output intensity of the region corresponding to the block of the first state value may be adjusted according to the ratio. In other embodiments, the air-out intensity of the block of the second state value may also be adjusted according to the ratio.
If the number of the blocks of the second state value is small, the number of the personnel in the space is small, and the temperature can be controlled by adopting small wind intensity so as to save power consumption. And when the small air outlet intensity is adopted, the phenomenon that when the area of the first state value adopts the large air outlet intensity, the edge wind sweeping can cause large influence on the area of the adjacent second state value can be avoided.
The number of blocks in the second state value is large, the number of people in the space is large, and the air outlet strength can be properly improved so as to achieve a good temperature control effect. And the number of blocks of the second state value is large, and when the wind with low intensity is adopted to wind the region corresponding to the first state value, the influence degree of the edge wind on the region corresponding to the second state value is small.
In some embodiments, the method for adjusting the wind output intensity according to the block ratio of the second state value includes: setting a plurality of proportional intervals according to a plurality of adjustable air outlet intensities of the air conditioner, wherein the proportional intervals correspond to the air outlet intensities one by one; and adjusting to the corresponding air outlet intensity according to the proportion interval in which the proportion is positioned.
The air conditioner has three kinds of air outlet intensity of weak wind, medium wind and strong wind, three continuous proportion intervals are correspondingly set, the three continuous proportion intervals are respectively a 1-a 2, a 2-a 3 and a 3-a 4, and the three continuous proportion intervals are in one-to-one correspondence with the three kinds of air outlet intensity. If the ratio is within a 1-a 2, the air outlet intensity is set to be weak wind; if the ratio is within a 2-a 3, setting the wind outlet intensity as wind stroke; and if the ratio is between a3 and a4, the air outlet intensity is set to be strong wind. In some embodiments, the ratio interval is uniformly set, where a1 is 0, a2 is 1/3, a3 is 2/3, and a4 is 1. In other embodiments, the lengths of the proportional intervals may not be uniform.
In other embodiments, the air conditioner may further have four or more wind outlet intensities, and four or more proportion intervals are correspondingly set.
According to the air conditioner control method, the activity state of the personnel in each area is judged through the depth value image, and the air outlet parameters of each area are set according to the activity state of the personnel, so that the condition that the personnel are directly blown by strong wind is avoided, and the body feeling comfort level of the personnel is improved.
The embodiment of the invention also provides an air conditioner control device which can execute the air conditioner control method.
An air conditioning control device includes: at least one TOF sensor for continuously acquiring a depth value image of a wind power coverage area of the air conditioner; the processor is connected to the depth sensor and used for controlling air outlet parameters of the air conditioner according to the depth value image; a memory storing an executable application program that, when executed by the processor, performs the air conditioner control method as described in the above embodiments.
And the air conditioner control device generates a corresponding control signal according to the air conditioner control method, and the corresponding control signal is used for adjusting the air outlet parameter of the air conditioner.
The air conditioner control device may further include a signal transceiving module, configured to perform signal transmission with the air conditioner, and configured to send the control signal to the air conditioner and receive a feedback signal of the air conditioner.
The signal receiving and transmitting module comprises a wireless transceiver which is used for supporting the receiving and transmitting of signals in a wireless mode such as infrared, Bluetooth or wifi. And a corresponding air conditioner end also needs to be provided with a corresponding type of signal transceiver so as to realize communication connection between the air conditioner host and the air conditioner control device.
In other embodiments, the signal transceiver module may also support transmission of wired signals.
In some embodiments, an air conditioning apparatus is further provided, where the air conditioning apparatus includes an air conditioning host and the air conditioning control device in the foregoing embodiments, and is capable of controlling the separation parameters in different regions according to the activity state of the person in the spatial region.
And the detection view field of the TOF sensor of the air conditioner control device covers the air outlet coverage area of the air conditioner host.
Fig. 4 is a schematic structural diagram of an air conditioning apparatus according to another embodiment of the present invention.
The TOF sensor 401 is installed above an air outlet 403 of the air conditioner main unit 402, and the orientation of a sensing surface of the TOF sensor 401 is consistent with that of the air outlet 403, so that the depth value image acquired by the TOF sensor 401 can be substantially consistent with a wind power coverage area of air outlet 403.
Fig. 5 is a schematic structural diagram of an air conditioning apparatus according to another embodiment of the present invention.
In this embodiment, a plurality of wind direction adjusting structures are disposed at the air outlet 403 of the main air conditioner, and each wind direction adjusting structure is used for adjusting the air outlet direction independently.
In this embodiment, the air outlet 403 is arranged along a horizontal direction, the air outlet 403 is provided with air direction adjusting structures 501-503 arranged along the horizontal direction, and each air direction adjusting structure includes a flap swinging up and down and a flap swinging left and right to control the air outlet direction. The wind direction adjusting structures are mutually independent, and the wind outlet directions can be respectively controlled, so that differentiated wind outlet can be performed on regions with different state values.
Fig. 6 is a schematic structural diagram of an air conditioning apparatus according to another embodiment of the present invention.
In this embodiment, the air conditioner main unit 600 has a vertical air outlet 610 and a larger width. The wind direction adjusting structures 601-606 distributed in an array can be arranged in the vertical direction and the horizontal direction.
In other embodiments, the air conditioner control device and the air conditioner host may be separately installed, and the air conditioner control device generates a control signal by the air conditioner control method, and then sends the control signal to the air conditioner host in a wireless manner to control the air outlet parameters of the air conditioner host.
That is, the above description is only an embodiment of the present application, and not intended to limit the scope of the present application, and all equivalent structures or equivalent flow transformations made by using the contents of the specification and the drawings, such as mutual combination of technical features between various embodiments, or direct or indirect application to other related technical fields, are included in the scope of the present application.
Claims (12)
1. An air conditioner control method is characterized by comprising the following steps:
continuously acquiring a depth value image of an air conditioner blowing coverage area through a TOF sensor, wherein the depth value image is provided with a plurality of pixel points;
dividing the depth value image into more than two blocks;
the depth value difference of each pixel point in each block in two adjacent frame depth value images is obtained by subtracting the depth value of the corresponding pixel point in the previous frame depth value image from the depth value of the pixel point in the current frame depth value image;
setting a state value of each block according to the depth value difference of each pixel point in each block, wherein the setting method of the state value comprises the following steps: acquiring a first number and a second number, wherein the first number is the number of pixel points with depth value differences larger than a first preset value in each block, the second number is the number of pixel points with depth value differences smaller than a second preset value in each block, the first preset value is larger than or equal to 0, and the second preset value is smaller than or equal to 0; when the first number is larger than a first state threshold value, setting the state value of the block as a first state value, wherein the first state value corresponds to that no person leaves or exists in a space area corresponding to the block; when the second number is larger than a second state threshold value, setting the state value of the block as a second state value, wherein the second state value corresponds to that personnel enters or the personnel is located in the space area corresponding to the block;
and adjusting the air outlet parameters of the space region corresponding to the pair of blocks of the air conditioner according to the state value of each block.
2. The air conditioner control method according to claim 1, wherein the state value of the block is maintained unchanged until the state value is switched between the first state value and the second state value.
3. The air conditioning control method according to claim 1, characterized by further comprising: and when the continuous times of the state values of the blocks reach the threshold times or the continuous time reaches the threshold time, controlling the air conditioner to adjust the blowing parameters.
4. The air conditioner control method according to claim 1, wherein the method for adjusting the air outlet parameters of the space region corresponding to the pair of blocks of the air conditioner according to the state value of each block comprises: the first state value corresponds to the improvement of the air output of the space region corresponding to the block; the second state value corresponds to reducing the air output of the space region corresponding to the block.
5. The air conditioner control method according to claim 1, further comprising the steps of: counting the proportion of the number of blocks with the state value being the second state value in the total number of the blocks; and adjusting the air outlet intensity according to the proportion, wherein the higher the proportion is, the larger the air outlet intensity is.
6. The air conditioner control method according to claim 5, wherein the method for adjusting the outlet air intensity according to the ratio comprises: setting a plurality of proportional intervals according to a plurality of adjustable air outlet intensities of the air conditioner, wherein the proportional intervals correspond to the air outlet intensities one by one; and adjusting to the corresponding air outlet intensity according to the proportion interval in which the proportion is positioned.
7. The air conditioner control method according to claim 1, wherein in an initialization state, the air conditioner is controlled to discharge air to the space region corresponding to each block according to the same air discharge parameters.
8. An air conditioning control device, characterized by comprising:
at least one TOF sensor for continuously acquiring a depth value image of a wind power coverage area of the air conditioner;
the processor is connected to the TOF sensor and used for controlling air outlet parameters of the air conditioner according to the depth value image;
a memory storing an executable application program that, when executed by the processor, performs the air conditioning control method according to any one of claims 1 to 7.
9. An air conditioning apparatus, comprising:
an air conditioner host;
the air conditioning control apparatus according to claim 8.
10. The air conditioning equipment as claimed in claim 9, wherein the detection field of view of the TOF sensor covers an air outlet coverage area of the main air conditioner.
11. The air conditioning equipment as claimed in claim 9, wherein the TOF sensor is mounted at the air outlet of the main air conditioner and is oriented in the same direction as the air outlet.
12. The air conditioning equipment as claimed in claim 9, wherein a plurality of wind direction adjusting structures are disposed at the air outlet of the main air conditioner, and each wind direction adjusting structure is configured to adjust the air outlet direction independently.
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