Air purifier control method and device, air purifier and medium

Abstract

The embodiment of the invention provides an air purifier control method and device, an air purifier and a medium, by detecting the physical characteristics, including the particle size, the shape, the migration path parameter and the gravity settling speed, of particulate matter in air when passing through the air purifier, the working gear of the air purifier is dynamically adjusted, and precise purification is achieved. The most suitable purification mode can be flexibly selected according to the physical characteristics of different particulate matters, so that the purification efficiency is improved, meanwhile, unnecessary energy waste can be avoided, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification, and in particular to an air purifier control method, an air purifier control device, an air purifier and a medium. Background Art

[0002] Air purifiers are widely used in homes, offices, and industrial spaces to improve air quality and reduce the health risks of particulate matter. However, most existing air purifiers operate in fixed modes or simply adjust based on air quality sensor readings, failing to dynamically optimize their operating state based on the actual usage environment. This control approach can cause high power consumption even when air quality is good, resulting in energy waste. It also prevents flexible adjustment of purification efficiency based on different scenarios, limiting the device's performance and lifespan. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide an air purifier control method and a corresponding air purifier control device, air purifier and medium that overcome the above problems or at least partially solve the above problems.

[0004] In a first aspect, an embodiment of the present invention provides an air purifier control method, comprising:

[0005] Detecting physical characteristics of airborne particles from the time they enter the air purifier to the time they leave the air purifier; the physical characteristics comprising at least one of particle size, shape, migration path parameters, and gravitational settling velocity;

[0006] According to the physical characteristics, the working gear of the air purifier is controlled; wherein the purification efficiency of different working gears is different.

[0007] Optionally, controlling the working gear of the air purifier according to the physical characteristics includes:

[0008] Obtaining judgment conditions corresponding to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, respectively;

[0009] respectively determining whether the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity satisfy corresponding determination conditions;

[0010] The working gear of the air purifier is controlled according to the determination results corresponding to the particle size, the shape, the migration path parameter and the gravitational sedimentation velocity.

[0011] Optionally, the judgment condition corresponding to the particle size is that the particle size is smaller than a preset particle size threshold;

[0012] The judgment conditions corresponding to the shape are regular shape and / or smooth surface;

[0013] The judgment condition corresponding to the migration path parameter is that the migration path parameter is greater than a preset migration path parameter threshold;

[0014] The judgment condition corresponding to the gravitational sedimentation velocity is that the gravitational sedimentation velocity is less than or equal to a preset gravitational sedimentation velocity threshold.

[0015] Optionally, the respectively determining whether the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity meet corresponding determination conditions includes:

[0016] For the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, determining in sequence whether corresponding judgment conditions are met;

[0017] If the physical characteristic described in the first item does not satisfy the corresponding judgment condition, it is determined whether the physical characteristic described in the second item satisfies the corresponding judgment condition.

[0018] Optionally, controlling the working gear of the air purifier according to the determination results corresponding to the particle size, the shape, the migration path parameter, and the gravitational settling velocity, respectively, includes:

[0019] If at least one of the physical characteristics satisfies a corresponding judgment condition, controlling the air purifier to turn on the first working gear;

[0020] If all the physical characteristics do not meet the corresponding judgment conditions, the air purifier is controlled to turn on the second working gear; the purification efficiency of the first working gear is greater than the purification efficiency of the second working gear.

[0021] Optionally, the air purifier includes a particle size detection module provided at the air inlet, and the detection of the physical characteristics of the particulate matter in the air from entering the air purifier to leaving the air purifier includes:

[0022] The particle size detection module detects the particle size of the particulate matter in the air at the air inlet.

[0023] Optionally, the air purifier includes a shape detection module provided in the filter area, and the detecting of the physical characteristics of the particulate matter in the air from entering the air purifier to leaving the air purifier includes:

[0024] The shape of the particulate matter in the air of the filter area is detected by the shape detection module.

[0025] Optionally, the air purifier includes a migration path parameter detection module disposed in the internal space, and the detection of physical characteristics of particulate matter in the air from entering the air purifier to leaving the air purifier includes:

[0026] The migration path parameter detection module detects the migration path parameters of the particulate matter in the air in the internal space of the air purifier.

[0027] Optionally, the air purifier includes a gravity settling velocity detection module provided at the air outlet, and the detection of the physical characteristics of the particulate matter in the air from entering the air purifier to leaving the air purifier includes:

[0028] The gravitational settling velocity of the particulate matter in the air at the air outlet is detected by the gravitational settling velocity detection module.

[0029] In a second aspect, an embodiment of the present invention provides a control device for an air purifier, comprising:

[0030] a particle detection module, configured to detect physical characteristics of airborne particles from the time they enter the air purifier to the time they leave the air purifier; the physical characteristics comprising at least one of particle size, shape, migration path parameters, and gravitational settling velocity;

[0031] A working gear control module is used to control the working gear of the air purifier according to the physical characteristics; wherein different working gears have different purification efficiencies.

[0032] In a third aspect, an embodiment of the present invention provides an air purifier, comprising: a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the steps of the above-mentioned air purifier control method when executed by the processor.

[0033] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned air purifier control method are implemented.

[0034] Embodiments of the present invention offer the following advantages: By detecting the physical characteristics of airborne particles as they pass through the air purifier, including particle size, shape, migration path parameters, and gravitational settling velocity, the air purifier's operating mode can be dynamically adjusted to achieve precise purification. This allows for flexible selection of the most appropriate purification mode based on the physical characteristics of different particles, thereby improving purification efficiency, avoiding unnecessary energy waste, and extending the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0036] Figure 1 This is a flowchart of a method for controlling an air purifier provided by an embodiment of the present invention;

[0037] Figure 2 is a flowchart of another air purifier control method provided by an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of an air purifier operation process provided by an embodiment of the present invention;

[0039] Figure 4 This is a structural block diagram of a control device for an air purifier provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0041] Most existing air purifiers operate in a fixed mode, or only adjust the gear according to the particle concentration, failing to fully utilize the physical properties of the particles to optimize the purification efficiency.

[0042] One of the core concepts of the present invention is to dynamically adjust the air purifier's operating mode to achieve precise purification by detecting the physical characteristics of airborne particles as they pass through the air purifier, including particle size, shape, migration path parameters, and gravitational settling velocity. This allows for flexible selection of the most appropriate purification mode based on the physical characteristics of different particles, thereby improving purification efficiency while avoiding unnecessary energy waste and extending the life of the equipment.

[0043] Reference Figure 1 , shows a flowchart of a method for controlling an air purifier provided by an embodiment of the present invention, the method may specifically include the following steps:

[0044] Step 101: detecting physical properties of airborne particles from entering the air purifier to leaving the air purifier; the physical properties comprising at least one of particle size, shape, migration path parameters, and gravitational settling velocity;

[0045] During air purifier operation, particulate matter in the air enters the purifier through the air inlet, undergoes a series of purification processes, and is discharged through the air outlet. To accurately control the operating status of the air purifier, the physical properties of the particulate matter during this process can be tested. These physical properties include but are not limited to particle size, shape, migration path parameters, and gravitational settling velocity.

[0046] Particle size refers to the size of particles, typically measured in microns (μm). Particles of different sizes have varying health impacts and purification difficulties. By measuring particle size, you can optimize your purifier's filtration strategy and improve its capture efficiency for fine particles.

[0047] Shape refers to the geometric form of particles, including whether they are regular in shape and whether their surface is smooth. Particle shape affects their trajectory in the air and their interaction with the purifier's internal components. By detecting shape, we can improve the purification effect for particles of different shapes.

[0048] The migration path parameter characterizes the movement of particles from the air inlet to the air outlet within an air purifier. Understanding the migration path of particles through the migration path parameter can help optimize the airflow design within the purifier and improve purification efficiency.

[0049] Gravitational settling velocity (GSV) is the rate at which particles settle freely under the influence of gravity and is generally related to particle density and size. It affects the residence time and distribution of particles within the purifier. By measuring GSV, purifier design can be optimized to improve purification performance for particles with varying GSVs.

[0050] In the method of the embodiment of the present invention, through the above-mentioned detection process, the behavior and characteristic changes of the particulate matter in the air inside the air purifier can be fully understood, providing data support for dynamically adjusting the working state of the purifier.

[0051] Step 102: Control the working gear of the air purifier according to the physical characteristics; wherein the purification efficiency of different working gears is different.

[0052] Air purifiers usually have multiple working gears, each gear corresponds to different operating parameters, such as wind speed, filter type, electrostatic field strength, etc., thereby achieving different purification efficiencies.

[0053] In the method of the embodiment of the present invention, the purification efficiency of each working gear is different, and the low gear can be used in situations where the air quality is good or the concentration of particulate matter is low. When operating in the low gear, the wind speed is low and the energy consumption is low, but the purification efficiency is also relatively low. It is suitable for maintaining indoor air quality and reducing energy waste; the middle gear can be used in situations with general air quality or medium concentration of particulate matter. When operating in the middle gear, the wind speed is moderate, which can balance the purification efficiency and energy consumption; the high gear can be used in situations where the air quality is poor or the concentration of particulate matter is high. When operating in the high gear, the wind speed is high and the purification efficiency is also high, but the energy consumption also increases accordingly.

[0054] The core of this solution is to dynamically adjust the working gear of the air purifier according to the detected physical characteristics of the particulate matter, including particle size, shape, migration path parameters and gravitational sedimentation velocity. This can ensure that the best purification effect can be achieved under different working conditions, and avoid running in high-power mode when the air quality is good or the particulate matter characteristics are easier to handle, thereby saving energy and reducing operating costs. At the same time, it can reduce the operating time of the equipment under high load conditions, reduce equipment wear and tear, and extend its service life.

[0055] The present invention dynamically adjusts the air purifier's operating mode to achieve precise purification by detecting the physical characteristics of airborne particles as they pass through the air purifier, including particle size, shape, migration path parameters, and gravitational settling velocity. This allows for flexible selection of the most appropriate purification mode based on the physical characteristics of different particles, thereby improving purification efficiency while avoiding unnecessary energy waste and extending the life of the equipment.

[0056] Reference Figure 2 , shows a flowchart of another air purifier control method of the present invention, which may specifically include the following steps:

[0057] Step 201: Detecting physical properties of airborne particles from the time they enter the air purifier to the time they leave the air purifier; the physical properties include at least one of particle size, shape, migration path parameters, and gravitational settling velocity;

[0058] During the operation of an air purifier, particulate matter in the air enters the purifier through the air inlet and is discharged through the air outlet after being purified. During this process, measuring the particle size, shape, migration path parameters, and gravitational settling velocity of the particles is a key step.

[0059] In some embodiments, the air purifier may include a particle size detection module disposed at an air inlet, and the particle size detection module is used to detect the particle size of particulate matter in the air at the air inlet.

[0060] The particle size detection module is installed near the air inlet of the air purifier. The air inlet is the entrance of the air purifier. By installing a particle size detection module at the air inlet, it can detect particulate matter in the air before it enters the purifier. This allows the particle size distribution of the air entering the air purifier to be obtained in real time. The air purifier's operating mode is dynamically adjusted based on the real-time particle size data to achieve the best purification effect.

[0061] As an example, a particle size detection module can use a laser scattering sensor to obtain the particle size distribution of particles in the air in real time by emitting a laser beam and detecting the scattered light caused by the particles. When the laser beam hits the particles in the air, the particles will scatter the light. The intensity and angle of the scattered light are closely related to the particle size of the particles. By collecting the scattered light and converting it into an electrical signal, and then through signal processing and data analysis, the particle size distribution of the particles can be calculated.

[0062] In other examples, the particle size detection module can use a capacitive sensor to detect the particle size by measuring the capacitance change caused by the particle. When the particle passes through the sensor, the capacitance value of the sensor will change, and the particle size of the particle can be calculated based on the change in capacitance. The particle size detection module can also use a resistive sensor to detect the particle size by measuring the resistance change caused by the particle. When the particle passes through the sensor, the resistance value of the sensor will change, and the particle size of the particle can be calculated based on the change in resistance. The particle size detection module can also use an image sensor, using a high-resolution camera to capture images of the particle, and then calculate the particle size through an image analysis algorithm.

[0063] The air purifier may further include a shape detection module disposed in the filter area, and the shape of the particulate matter in the air in the filter area is detected by the shape detection module.

[0064] The shape detection module is installed in the filter area of ​​the air purifier, that is, the area after the air has passed through the filter and been purified. It can evaluate the filtering effect of the filter by detecting the shape characteristics of the particles processed by the filter, and provide data support for optimizing the filtering efficiency and performance of the air purifier.

[0065] As an example, the particle shape detection module can use an optical imaging sensor to analyze the shape regularity or surface smoothness of the particles by taking morphological images of the particles, use a high-resolution camera to capture images of the particles, and then analyze these images through image processing algorithms to evaluate the shape characteristics of the particles.

[0066] In other examples, the shape detection module can employ deep learning image processing, using deep learning algorithms such as convolutional neural networks (CNNs) to analyze particle images captured by optical imaging sensors. By training the model, the algorithm can automatically identify and classify particle shape characteristics, such as shape regularity and surface smoothness. The shape detection module can also employ 3D imaging sensors to generate three-dimensional images of particles by emitting and receiving laser or infrared light. This provides three-dimensional morphological information, including height, width, and depth, enabling a more comprehensive assessment of particle shape characteristics.

[0067] In the embodiment of the present invention, the following quantitative standards and classification methods can be used to evaluate the shape regularity and surface smoothness of particles:

[0068] 1. Quantitative standards for shape rules

[0069] (1) Circularity: The shape regularity of a particle is evaluated by calculating the ratio of the square of the particle's perimeter to its area multiplied by 4 times π.

[0070]

[0071] Among them, A is the area of ​​the particle, P is the circumference, and the closer the circularity is to 1, the closer the shape of the particle is to a circle and the more regular the shape is.

[0072] (2) Aspect Ratio: The aspect ratio is used to evaluate the shape regularity of particles by calculating the ratio of the major axis to the minor axis of the particles.

[0073]

[0074] The closer the aspect ratio is to 1, the closer the shape of the particles is to a circle or a square, and the more regular the shape is.

[0075] 2. Quantitative standard for surface smoothness

[0076] (1) Edge Sharpness: Edge sharpness is the evaluation of the smoothness of the particle surface by analyzing the clarity of the particle edge through image processing algorithms. The clearer the edge, the smoother the surface.

[0077] (2) Roughness: Roughness is used to evaluate the smoothness of the particle surface by calculating the texture characteristics of the particle surface. The lower the roughness value, the smoother the surface.

[0078] The air purifier may further include a migration path parameter detection module disposed in the internal space, and the migration path parameter detection module is used to detect the migration path parameters of the particulate matter in the air in the internal space of the air purifier.

[0079] The migration path parameter detection module is installed in the internal space of the air purifier. It can comprehensively monitor the entire migration process of particles in the air inside the air purifier, from the entire path of entering the device to the final discharge. It can understand the movement trajectory of particles inside the device, thereby evaluating the rationality of the airflow design and the efficiency of the filter.

[0080] As an example, the migration path parameter detection module can use an airflow sensor to sense airflow dynamics by measuring changes in air velocity and direction. This data is collected in real time, providing foundational information for subsequent analysis. The trajectory analysis algorithm then processes the data provided by the airflow sensor to calculate the parameters of the particle's migration path in the air. This is used to assess the complexity of the particle's migration path and identify its movement patterns in the airflow.

[0081] Migration path complexity refers to the complexity of particle movement within an air purifier. Complex migration paths mean particles may bounce, stagnate, or detour multiple times in certain areas, affecting purification efficiency. Therefore, assessing migration path complexity helps optimize air purifier airflow design.

[0082] In some examples, the airflow sensor may be a hot wire sensor, a differential pressure sensor, or an ultrasonic sensor, which is not limited in the present invention.

[0083] In an embodiment of the present invention, migration path parameters can be extracted from the airflow data to evaluate the complexity of the migration path. The migration path parameters include the standard deviation of the airflow velocity, the rate of change of the airflow direction, and the airflow velocity gradient:

[0084] 1. Airflow velocity standard deviation: The airflow velocity standard deviation reflects the fluctuation of airflow velocity. The larger the standard deviation, the greater the fluctuation of airflow velocity and the more complex the migration path.

[0085]

[0086] Among them, v i is the velocity of the i-th sampling point, is the average speed, and N is the total number of sampling points.

[0087] 2. Airflow Direction Change Rate: The airflow direction change rate reflects the frequency of airflow direction changes within a certain period of time. The number of direction changes refers to the number of times the airflow direction changes significantly within a certain period of time.

[0088] The higher the rate of change, the more complex the migration path.

[0089]

[0090] 3. Airflow velocity gradient: The airflow velocity gradient reflects the rate of change of airflow velocity over time. A larger velocity gradient means that the airflow changes drastically and the migration path is complex.

[0091]

[0092] Here, Δv is the change in velocity, and Δt is the change in time.

[0093] The air purifier may further include a gravity settling velocity detection module disposed at the air outlet, and the gravity settling velocity of the particulate matter in the air at the air outlet is detected by the gravity settling velocity detection module.

[0094] The gravity settling velocity detection module is installed near the air purifier's air outlet. It measures the gravity settling velocity of particles after the air has been purified. By measuring the gravity settling velocity of particles at the air outlet, we can evaluate the purifier's particle removal effectiveness and ensure that the purified air meets quality standards.

[0095] As an example, the gravitational settling velocity detection module can use a gravity sensor to measure the vertical movement of particles, accurately measuring the displacement and time of particles under the influence of gravity. Then, a settling velocity analysis algorithm processes the data provided by the gravity sensor to calculate the gravitational settling velocity of the particles.

[0096]

[0097] Where s is the falling distance and t is the falling time.

[0098] In some examples, the gravity settling velocity detection module can use an acceleration sensor to measure the acceleration data of the particles under the action of gravity, thereby quickly calculating the particle settling velocity using kinematic formulas. The gravity settling velocity detection module can also use a microelectromechanical system sensor (MEMS sensor). Using MEMS technology, mechanical structures and electronic circuits are integrated on the same chip to measure the displacement and velocity of particles under the action of gravity and calculate the particle's gravity settling velocity using kinematic formulas.

[0099] Step 202: Obtain judgment conditions corresponding to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, respectively; the judgment condition corresponding to the particle size is that the particle size is less than a preset particle size threshold; the judgment condition corresponding to the shape is that the shape is regular and / or the surface is smooth; the judgment condition corresponding to the migration path parameter is that the migration path parameter is greater than a preset migration path parameter threshold; and the judgment condition corresponding to the gravitational sedimentation velocity is that the gravitational sedimentation velocity is less than or equal to a preset gravitational sedimentation velocity threshold.

[0100] In some embodiments, to achieve precise detection and dynamic control of particulate matter, corresponding judgment conditions can be set based on the physical characteristics of the detected particulate matter, including particle size, shape, migration path parameters, and gravitational settling velocity. The judgment conditions are used to evaluate the characteristics of the particulate matter and adjust the operating mode of the air purifier accordingly to achieve the best purification effect.

[0101] 1) Particle size refers to the size of the particles, usually measured in microns (μm). Particle size can be generally divided into:

[0102] Fine particulate matter (PM2.5): If the detected particle size is less than 2.5 microns, it indicates that fine particulate matter exists in the air. Fine particulate matter poses a greater threat to human health and is difficult to be captured by traditional filter materials.

[0103] Larger particles (PM10): If the detected particle size is larger than 10 microns, it indicates that there are larger particles in the air, which are more easily captured by the filter.

[0104] Medium-sized particles: If the detected particle size is between 2.5 microns and 10 microns, it indicates that there are medium-sized particles in the air. The working mode of the air purifier can be adjusted according to the specific distribution to achieve the best purification effect.

[0105] The particle size determination criteria are used to assess the size distribution of particulate matter, thereby adjusting the air purifier's filtration strategy. In this embodiment of the present invention, the particle size determination criteria are that the particle size is less than a preset particle size threshold, meaning that the particle size falls within the fine particle range, less than 2.5 microns. Fine particles have a significant impact on human health, so the air purifier needs to activate a more efficient purification mode to handle them.

[0106] 2) Particle shape refers to the geometric form of the particles, which can be quantitatively evaluated by the following two indicators:

[0107] Shape regularity: If the shape of the particles detected is very regular (circularity ≥ 0.95, aspect ratio ≤ 1.2), the adsorption efficiency can be improved; if the shape of the particles detected is irregular (circularity < 0.85, aspect ratio > 2.0), the mechanical filtration mode can be switched.

[0108] Surface smoothness: If the surface of the particles is detected to be very smooth (edge ​​sharpness ≥ 0.85, roughness ≤ 0.15), it indicates that the surface of the particles is relatively smooth, difficult to capture, and easy to penetrate the filter. It is necessary to switch to high purification efficiency mode to increase wind speed and filter efficiency. If the surface of the particles is detected to be rough (edge ​​sharpness < 0.60, roughness > 0.45), it indicates that the surface of the particles is relatively rough. You can switch to low power consumption mode to reduce energy consumption.

[0109] The shape judgment condition is used to evaluate the morphological characteristics of the particles, thereby adjusting the adsorption strategy of the air purifier. In an embodiment of the present invention, the shape judgment condition includes regular shape and / or smooth surface, which is judged by four indicators: circularity, aspect ratio, edge sharpness and roughness: circularity ≥ 0.95, aspect ratio ≤ 1.2, edge sharpness ≥ 0.85, roughness ≤ 0.15, which means that the particles have a relatively regular geometric shape, such as close to a sphere, or a relatively smooth surface. Such particles may be difficult to capture and easily penetrate conventional filters, thereby enhancing the purification capacity of the air purifier.

[0110] 3) Migration path parameters can be used to characterize the movement trajectory of particles from the air inlet to the air outlet inside the air purifier. Migration paths can be divided into the following categories according to the migration path parameters:

[0111] Simple migration path: If the detected airflow velocity standard deviation is ≤0.5m / s, the airflow direction change rate is ≤0.1 times / second, and the airflow velocity gradient is ≤0.2m / s², it indicates that the particle migration path is relatively simple. In this case, the air purifier can maintain its current operating mode to ensure purification effectiveness.

[0112] Complex migration path: If the detected airflow velocity standard deviation is >0.5m / s, the airflow direction change rate is >0.1 times / second, and the airflow velocity gradient is >0.2m / s2, it indicates that the migration path of the particles is relatively complex.

[0113] The judgment condition of the migration path parameter is used to evaluate the movement of particulate matter in the airflow, thereby adjusting the airflow strategy of the air purifier. In an embodiment of the present invention, the judgment condition of the migration path parameter is that the migration path parameter is greater than the preset migration path parameter threshold: the standard deviation of the airflow velocity is greater than 0.5m / s, the airflow direction change rate is greater than 0.1 times / second, and the airflow velocity gradient is greater than 0.2m / s2, that is, the movement trajectory of the particulate matter inside the air purifier is not a straight line or a simple trajectory, which may reduce the purification efficiency. Therefore, when it is detected that the migration path corresponding to the migration path parameter belongs to a complex migration path, the working gear can be adjusted to improve the purification effect.

[0114] 4) Gravitational settling velocity refers to the speed at which particles settle freely under the action of gravity. It is usually related to the density and particle size of the particles. According to the speed of the particle's gravity settling velocity, it can usually be divided into:

[0115] Fast settling velocity: If the settling velocity of the particles is detected to be greater than 0.5m / s, it indicates that the particles are heavy and easily settle under the action of gravity.

[0116] Slow settling velocity: If the settling velocity of the particles is detected to be no more than 0.1 m / s, it indicates that the particles are light and difficult to settle under the action of gravity.

[0117] Medium settling velocity: If the settling velocity of particles is detected to be between fast and slow, that is, between 0.1m / s and 0.5m / s, it indicates that the density and particle size of the particles are moderate. The wind speed and filter type can be adjusted according to the specific distribution to achieve the best purification effect.

[0118] The gravitational settling velocity determination criteria are used to assess the settling of particulate matter under the action of gravity, thereby adjusting the operating strategy of the air purifier. In an embodiment of the present invention, the gravitational settling velocity determination criteria are that the gravitational settling velocity is less than or equal to a preset gravitational settling velocity threshold, and the settling velocity of the particulate matter is no greater than 0.1 m / s. Slow settling velocity means that the particulate matter tends to remain suspended in the air rather than quickly settling, so the air purifier needs to operate at a high purification efficiency gear for a longer period of time to achieve the desired purification effect.

[0119] Step 203, respectively determining whether the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity meet corresponding determination conditions;

[0120] In some embodiments, step 203 may include the following sub-steps:

[0121] Sub-step S11, determining whether corresponding judgment conditions are met in sequence with respect to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity;

[0122] When detecting particulate matter in the air, the air purifier can check the four physical properties of these particles in turn: particle size, shape, migration path parameters and gravitational sedimentation velocity to see whether they meet the pre-set judgment conditions.

[0123] Sub-step S12: if the physical characteristic of the first item does not satisfy the corresponding judgment condition, then determining whether the physical characteristic of the second item satisfies the corresponding judgment condition;

[0124] In the embodiment of the present invention, the order of judgment is fixed and is performed sequentially. When the previous physical characteristic does not meet the corresponding judgment condition, the next physical characteristic is judged.

[0125] First, the particle size is tested to see if it is smaller than a preset particle size threshold, which indicates it is a small particle. If the particle size does not meet the preset conditions, the shape of the particle is then tested to see if it has a regular geometric shape and / or a smooth surface. If the shape does not meet the requirements, the migration path parameters of the particle are further tested to assess whether the migration path parameters of its motion trajectory inside the air purifier are greater than the preset migration path parameter threshold. Finally, if the migration path parameters still do not meet the conditions, the gravitational settling velocity of the particle is tested to determine whether its gravitational settling velocity is less than or equal to the preset gravitational settling velocity threshold.

[0126] Step 204 : Control the working gear of the air purifier according to the determination results corresponding to the particle size, the shape, the migration path parameter, and the gravitational settling velocity.

[0127] In some embodiments, step 204 may include the following sub-steps:

[0128] Sub-step S21, if at least one of the physical characteristics satisfies a corresponding judgment condition, controlling the air purifier to start a first working gear;

[0129] During the entire detection process, if at least one physical characteristic meets the corresponding judgment criteria, the air purifier will start the first working gear. The first working gear has a higher purification efficiency and can more effectively remove particulate matter in the air, and is suitable for processing particulate matter with specific physical characteristics.

[0130] Sub-step S22: If all the physical characteristics do not meet the corresponding judgment conditions, control the air purifier to turn on the second working gear; the purification efficiency of the first working gear is greater than the purification efficiency of the second working gear.

[0131] If, after a series of tests, all physical properties fail to meet the pre-set criteria—that is, the particle size, shape, migration path parameters, and gravitational settling velocity all fail to meet the set standards for the first operating mode—the air purifier will activate the second operating mode. The second operating mode offers a lower purification efficiency and is suitable for treating particles whose physical properties do not meet specific standards. This ensures effective purification while also utilizing energy efficiently and avoiding unnecessary high-energy consumption.

[0132] By judging in sequence and adjusting the working gear according to the results, the air purifier can respond to particulate matter with different characteristics more intelligently, ensuring the best purification effect in various situations. At the same time, it can also adjust energy consumption according to actual needs to achieve efficient and energy-saving operation.

[0133] In some embodiments, the multi-level judgment logic of particle size, shape, migration path parameters and gravitational sedimentation velocity can also be personalized according to the actual use environment to adapt to the air purification needs in different environments. The characteristics of particulate matter may be very different in home environments and industrial environments, so the air purifier can adjust its detection and judgment logic according to the characteristics of different environments. For example, in a home environment, more attention is paid to the removal effect of fine particles, such as PM2.5, which have a greater impact on human health, while in an industrial environment, more attention may be paid to the removal of larger particles or irregularly shaped particles to protect mechanical equipment from damage. Through personalized adjustment, the air purifier can more accurately identify and process particulate matter in a specific environment, improve purification efficiency, and also help optimize energy consumption, so that the air purifier can perform at its best in different environments and achieve more efficient and economical air purification.

[0134] In some embodiments, when data conflicts occur in the detection results of several detection modules in the air purifier, for example, if the particle size detection module detects that the particle size is PM10 (the air purifier should enter a lower purification efficiency working gear), but the shape detection module shows that its surface is smooth (the air purifier should enter a higher purification efficiency working gear), the control module can comprehensively consider the data of each sensor and perform weighted evaluation and decision-making on the detection data through a built-in algorithm. At the same time, the system design can also include a manual intervention function. When data conflicts occur, users or administrators can manually adjust the weight of the sensors or directly input decisions, thereby resolving the conflict and guiding the air purifier to make the final working gear decision.

[0135] Illustratively, the following is provided: Figure 3 A schematic diagram of the operation process of an air purifier is shown.

[0136] After the user turns on the air purifier, the particle size detection module is used to assess the size of the particles. If the detected particle size is small, that is, the particle size is less than the preset particle size threshold, for example, less than or equal to 2.5 microns, it means that the particles may be small and difficult to settle, such as PM2.5. The air purifier will start the first working gear, that is, the high gear, to improve the filtration efficiency.

[0137] If the particle size is large, meaning it's greater than or equal to a preset particle size threshold, the shape detection module will further analyze the particle's shape characteristics. If the particle is detected to have a regular shape or a smooth surface, it means the particle is more difficult to capture because it may be more likely to float in the air or slip through the filter, so the system can activate the air purifier's first operating mode. If the particle is detected to have an irregular shape or a rough surface, the process enters the migration path parameter detection module.

[0138] The migration path parameter detection module detects the migration path parameters to assess whether the particle movement trajectory within the air purifier is complex. If the migration path corresponding to the migration path parameters is detected to be a complex migration path, it indicates that the particles may be significantly affected by airflow disturbances within the purifier, which may reduce purification efficiency. Therefore, the system will also activate the first operating gear. If the migration path corresponding to the migration path parameters is detected to be a simple migration path, the process enters the gravity settling velocity detection module.

[0139] The gravity settling velocity detection module measures the gravity settling velocity of particulate matter. If the gravity settling velocity is detected to be slow (i.e., less than or equal to the preset gravity settling velocity threshold), this indicates that the particulate matter is more likely to remain suspended in the air and less likely to settle, and the air purifier will operate in the first gear. If the gravity settling velocity is detected to be fast (i.e., greater than the preset gravity settling velocity threshold), this indicates that the particulate matter is heavier and more likely to settle, and the air purifier will operate in the second gear (low gear) to save energy.

[0140] During the entire process, when any of the above physical property judgment conditions is met, that is, the particle size is less than the preset particle size threshold, the shape is regular and / or the surface is smooth, the migration path parameter is greater than the preset migration path parameter threshold, and the gravity sedimentation velocity is less than or equal to the preset gravity sedimentation velocity threshold, the air purifier control system can turn on the first working gear, that is, a more efficient purification mode. If all these conditions are not met, it may mean that the particles are large, irregular in shape, have a simple migration path, and have a fast gravity sedimentation velocity. At this time, the air purifier can turn on the second working gear, that is, a lower purification efficiency mode, to save energy. The air purifier can dynamically adjust its working state according to the real-time detected particle characteristics to achieve the best purification effect, which helps to improve the energy efficiency of the air purifier while ensuring indoor air quality.

[0141] The present invention dynamically adjusts the air purifier's operating mode to achieve precise purification by detecting the physical characteristics of airborne particles as they pass through the air purifier, including particle size, shape, migration path parameters, and gravitational settling velocity. This allows for flexible selection of the most appropriate purification mode based on the physical characteristics of different particles, thereby improving purification efficiency while avoiding unnecessary energy waste and extending the life of the equipment.

[0142] It should be noted that for the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because according to the embodiments of the present invention, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required for the embodiments of the present invention.

[0143] Reference Figure 4 , shows a structural block diagram of a control device for an air purifier provided by an embodiment of the present invention, which may specifically include the following modules:

[0144] a particle detection module 301 for detecting physical characteristics of particles in the air from the time they enter the air purifier to the time they leave the air purifier; the physical characteristics comprising at least one of particle size, shape, migration path parameters, and gravitational settling velocity;

[0145] The working gear control module 302 is used to control the working gear of the air purifier according to the physical characteristics; different working gears have different purification efficiencies.

[0146] In this embodiment of the present invention, the particle detection module 301 includes:

[0147] a particle size detection module, configured to detect the particle size of particulate matter in the air at the air inlet through the particle size detection module;

[0148] a shape detection module, configured to detect the shape of particles in the air of the filter area through the shape detection module;

[0149] a migration path parameter detection module, configured to detect migration path parameters of particulate matter in the air in the interior space of the air purifier through the migration path parameter detection module;

[0150] The gravity settling velocity detection module is used to detect the gravity settling velocity of the particulate matter in the air at the air outlet through the gravity settling velocity detection module.

[0151] In an embodiment of the present invention, the working gear control module 302 includes:

[0152] a judgment condition acquisition submodule, for acquiring judgment conditions corresponding to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, respectively; the judgment condition corresponding to the particle size is that the particle size is less than a preset particle size threshold; the judgment condition corresponding to the shape is that the shape is regular and / or the surface is smooth; the judgment condition corresponding to the migration path parameter is that the migration path parameter is greater than a preset migration path parameter threshold; and the judgment condition corresponding to the gravitational sedimentation velocity is that the gravitational sedimentation velocity is less than or equal to a preset gravitational sedimentation velocity threshold;

[0153] A condition judgment submodule, for respectively judging whether the particle size, the shape, the migration path parameter and the gravitational sedimentation velocity meet corresponding judgment conditions;

[0154] In an embodiment of the present invention, the condition judgment submodule includes:

[0155] a condition judgment unit, configured to determine whether corresponding judgment conditions are met in order with respect to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity;

[0156] The judgment logic unit is used to judge whether the physical characteristic of the second item meets the corresponding judgment condition if the physical characteristic of the first item does not meet the corresponding judgment condition.

[0157] The gear adjustment submodule is used to control the working gear of the air purifier according to the determination results corresponding to the particle size, the shape, the migration path parameter and the gravitational sedimentation velocity.

[0158] In an embodiment of the present invention, the gear adjustment submodule includes:

[0159] a first working gear control unit, configured to control the air purifier to open the first working gear if at least one of the physical characteristics satisfies a corresponding judgment condition;

[0160] The second working gear control unit is used to control the air purifier to turn on the second working gear if all the physical characteristics do not meet the corresponding judgment conditions; the purification efficiency of the first working gear is greater than the purification efficiency of the second working gear.

[0161] The present invention dynamically adjusts the air purifier's operating mode to achieve precise purification by detecting the physical characteristics of airborne particles as they pass through the air purifier, including particle size, shape, migration path parameters, and gravitational settling velocity. This allows for flexible selection of the most appropriate purification mode based on the physical characteristics of different particles, thereby improving purification efficiency while avoiding unnecessary energy waste and extending the life of the equipment.

[0162] As for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0163] An embodiment of the present invention also provides an air purifier, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the various processes of the above-mentioned air purifier control method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0164] An embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the various processes of the above-mentioned air purifier control method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0165] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0166] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, apparatus, or computer program products. Thus, embodiments of the present invention may take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0167] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, terminal devices (systems) and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams and the combination of processes and / or blocks in the flowcharts and / or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0168] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0169] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0170] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they become aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0171] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0172] The above is a detailed introduction to the air purifier control method, device, air purifier and medium provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for controlling an air purifier, characterized in that: include: detecting physical characteristics of airborne particles from the time they enter the air purifier to the time they leave the air purifier; The physical properties include at least one of particle size, shape, migration path parameters, and gravitational settling velocity; According to the physical characteristics, the working gear of the air purifier is controlled; wherein the purification efficiency of different working gears is different.

2. The air purifier control method according to claim 1, characterized in that: The controlling the working gear of the air purifier according to the physical characteristics includes: Obtaining judgment conditions corresponding to the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, respectively; respectively determining whether the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity satisfy corresponding determination conditions; The working gear of the air purifier is controlled according to the determination results corresponding to the particle size, the shape, the migration path parameter and the gravitational sedimentation velocity.

3. The air purifier control method according to claim 2, characterized in that: The judgment condition corresponding to the particle size is that the particle size is smaller than a preset particle size threshold; The judgment conditions corresponding to the shape are regular shape and / or smooth surface; The judgment condition corresponding to the migration path parameter is that the migration path parameter is greater than a preset migration path parameter threshold; The judgment condition corresponding to the gravitational sedimentation velocity is that the gravitational sedimentation velocity is less than or equal to a preset gravitational sedimentation velocity threshold.

4. The air purifier control method according to claim 2, characterized in that: The respectively judging whether the particle size, the shape, the migration path parameter and the gravitational sedimentation velocity meet corresponding judgment conditions includes: For the particle size, the shape, the migration path parameter, and the gravitational sedimentation velocity, determining in sequence whether corresponding judgment conditions are met; If the physical characteristic described in the first item does not satisfy the corresponding judgment condition, it is determined whether the physical characteristic described in the second item satisfies the corresponding judgment condition.

5. The air purifier control method according to claim 4, characterized in that: The controlling of the working gear of the air purifier according to the determination results corresponding to the particle size, the shape, the migration path parameter, and the gravitational settling velocity, comprises: If at least one of the physical characteristics satisfies a corresponding judgment condition, controlling the air purifier to turn on the first working gear; If all the physical characteristics do not meet the corresponding judgment conditions, the air purifier is controlled to turn on the second working gear; the purification efficiency of the first working gear is greater than the purification efficiency of the second working gear.

6. The air purifier control method according to claim 1, characterized in that: The air purifier includes a particle size detection module disposed at an air inlet, and the detection of physical characteristics of particles in the air from entering the air purifier to leaving the air purifier includes: The particle size detection module detects the particle size of the particulate matter in the air at the air inlet.

7. The air purifier control method according to claim 1, characterized in that: The air purifier includes a shape detection module disposed in the filter area, and the detection of physical characteristics of particles in the air from entering the air purifier to leaving the air purifier includes: The shape of the particulate matter in the air of the filter area is detected by the shape detection module.

8. The air purifier control method according to claim 1, characterized in that: The air purifier includes a migration path parameter detection module disposed in an internal space, wherein the detection of physical characteristics of particulate matter in the air from entering the air purifier to leaving the air purifier includes: The migration path parameter detection module detects the migration path parameters of the particulate matter in the air in the internal space of the air purifier.

9. The air purifier control method according to claim 1, characterized in that: The air purifier includes a gravity settling velocity detection module provided at an air outlet, and the detection of the physical characteristics of the particulate matter in the air from entering the air purifier to leaving the air purifier includes: The gravitational settling velocity of the particulate matter in the air at the air outlet is detected by the gravitational settling velocity detection module.

10. A control device for an air purifier, characterized in that: include: a particle detection module, configured to detect physical characteristics of particles in the air from the time they enter the air purifier to the time they leave the air purifier; The physical properties include at least one of particle size, shape, migration path parameters, and gravitational settling velocity; A working gear control module is used to control the working gear of the air purifier according to the physical characteristics; wherein different working gears have different purification efficiencies.

11. An air purifier, characterized in that: include: A processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein when the computer program is executed by the processor, the steps of the air purifier control method according to any one of claims 1 to 9 are implemented.

12. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the air purifier control method according to any one of claims 1 to 9 are implemented.

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