Indoor air purification method and system based on air purifier

Abstract

The invention discloses an indoor air purification method and system based on an air purifier, and belongs to the technical field of indoor air purification.The purification method comprises the following steps that S1, indoor air quality information and personnel physical state information are collected; s2, performing data processing on the information to obtain a first purification demand index and a second purification demand index; s3, the two purification demand indexes are subjected to weighted calculation, the air purification index is obtained, and the calculation formula is shown in the specification; and S4, the lowest threshold value and the highest threshold value are determined, the air purification index is compared with the lowest threshold value and the highest threshold value, the purification mode of the air purifier is determined, and meanwhile the invention further provides a system capable of achieving the method. According to the indoor air purification method and system based on the air purifier, capturing of tiny risks is achieved through multi-dimensional collaborative evaluation, accurate dynamic air purification control is carried out, and the body health of personnel is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of indoor air purification technology, specifically relating to an indoor air purification method and system based on an air purifier. Background Technology

[0002] With urbanization, modern people spend a lot of time indoors, and air purifiers are an important part of improving indoor air quality. Traditional air purifiers usually use fixed modes to adjust the fan speed and purification intensity, which requires people to actively change them. They cannot automatically respond to changes in indoor air quality and changes in people's physical condition, resulting in low indoor air purification efficiency.

[0003] Existing improvement methods typically involve collecting a single parameter from either the user's status parameters or the air quality parameters, and then adjusting based on that single parameter. While this method enables air purifiers to automatically adjust, it has several limitations. For example, the single baseline parameter cannot meet the personalized needs of users, and the use of fixed thresholds for judgment lacks long-term adaptive optimization capabilities.

[0004] Therefore, there is an urgent need for an indoor air purification method and system based on air purifiers to meet people's living needs indoors. Summary of the Invention

[0005] In response to one or more of the above-mentioned defects or improvement needs of the existing technology, the present invention provides an indoor air purification method and system based on an air purifier, wherein by conducting synergistic evaluation through multi-dimensional indicators, minute risks can be effectively captured, and precise dynamic purification control of indoor air can be achieved.

[0006] To achieve the above objectives, the present invention provides an indoor air purification method based on an air purifier, comprising the following steps: S1. Collect indoor air quality information and personnel physical condition information respectively; S2. Process the indoor air quality information and the physical condition information of the personnel respectively to obtain the first purification demand index. Second purification demand index ; S3, Regarding the first purification demand index and the second purification demand index The air purification index is obtained by performing a weighted calculation. The weighted calculation formula is as follows: In the formula, and These are the weighting coefficients, and ; S4. Determine the minimum threshold. and highest threshold and the air purification index With the minimum threshold and the highest threshold Comparisons are made to determine the purification mode of the air purifier.

[0007] As a further improvement of the present invention, the indoor air quality information includes the PM2.5 content and volatile organic compound content in the indoor space. The air parameters are normalized to obtain the first purification demand index. .

[0008] As a further improvement of the present invention, the personnel physical status information includes the user's real-time blood oxygen saturation. User breathing rate User heart rate ; Second purification demand index The calculation formula is: In the formula, The second purification index, Provides users with real-time blood oxygen saturation. For reference blood oxygen saturation, For the user's breathing rate, For reference respiratory rate, For user heart rate, For reference heart rate, ~ These are the weighting coefficients, and , This is the heart rate correction factor.

[0009] As a further improvement to the present invention, a personalized optimization method is also included, the specific steps of which are as follows: A1. Collect user's physical condition information, determine the reference value to be optimized based on the user's physical condition information, and modify it. The reference value is reference blood oxygen saturation. Reference respiratory rate and reference heart rate One or more of them; A2. Determine the initial weighting coefficient and minimum threshold based on the user's physical condition information. and highest threshold The initial value.

[0010] As a further improvement to the present invention, a dynamic optimization method is also included, the specific steps of which are as follows: B1. Store the real-time collected information on the physical condition of the personnel as historical data; B2. Analyze the relationship between personnel's physical condition information and time based on historical data, and adjust the reference values ​​and / or weighting coefficients within the corresponding time period.

[0011] As another aspect of the present invention, an indoor air purification system based on an air purifier is also proposed, including an environmental detection module, a human body detection module, a central processing module, and an air purifier. The environmental detection module is located indoors and is used to collect indoor air quality information. The human body detection module is in contact with the surface of the person's body and is used to collect the person's physical condition information. The central processing module is communicatively connected to the environmental detection module and the human body detection module, respectively, and is used to receive indoor air quality information and human physical condition information, process the data, obtain the air purification index, compare the air purification index with the threshold, determine the purification mode of the air purifier, and generate control commands. The air purifier is communicatively connected to the central processing module to receive the control commands and perform corresponding purification operations.

[0012] As a further improvement of the present invention, the air purifier includes a fan, a negative ion generator, and a filter assembly including multiple filter channels.

[0013] As a further improvement of the present invention, a storage module is also included, which is communicatively connected to the central processing module and is used to receive and store historical detection information.

[0014] As a further improvement of the present invention, the human body detection module includes a wearable human body data acquisition device; And / or, The environmental monitoring module includes a PM2.5 sensor and a volatile organic compound sensor.

[0015] As a further improvement of the present invention, it also includes a ventilator and / or a temperature and humidity control device; And / or, The environmental monitoring module includes a CO2 sensor and / or a temperature and humidity sensor.

[0016] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0017] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The indoor air purification method based on an air purifier of the present invention obtains an air purification index by coupling analysis of indoor air quality and human physical condition. In essence, it covers air quality (such as PM2.5 content and volatile organic compound content) and human condition (such as real-time blood oxygen saturation, user respiratory rate, and user heart rate). It does not rely solely on a single-dimensional indicator for judgment. That is, through multi-dimensional collaborative assessment, it can capture subtle risks and thus achieve precise dynamic purification and control of indoor air to ensure the health of people. (2) The indoor air purification method based on an air purifier of the present invention optimizes and corrects the initial weight, judgment threshold and reference value by determining the basic physical condition of an indoor person (usually one person) so as to meet the indoor air purification needs of the user. (3) The indoor air purification method based on air purifier of the present invention analyzes and judges the detected historical data to determine the relationship between changes in the physical condition information of personnel and time, and corrects the reference value and weight coefficient within the corresponding time period, thereby constructing a personalized air purification strategy for users to meet their health needs. (4) The indoor air purification system based on the air purifier of the present invention implements the indoor air purification method through the system, and the purifier can be divided into three purification modes to correspond to the judgment result of the air purification index, so as to realize the automatic adjustment of the air purifier and avoid health risks. (5) The indoor air purification method and system based on the air purifier of the present invention collects relevant environmental information by configuring carbon dioxide sensor and temperature and humidity sensor, and configures ventilation fan and temperature and humidity control device to achieve all-round control of indoor environment, effectively improve the comfort of indoor people, and can also work in conjunction with human body detection module to further protect human health. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the indoor air purification method based on an air purifier in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of an indoor air purification system based on an air purifier in an embodiment of the present invention; In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1. Environmental detection module; 2. Human body detection module; 3. Central processing module; 4. Storage module; 5. Air purifier; 6. Air conditioner; 7. Humidifier. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0020] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] Example: Please see Figures 1-2 The indoor air purification method based on an air purifier in a preferred embodiment of the present invention analyzes and determines the purification mode according to the collected indoor air quality information and the physical condition information of the people in the room, and includes the following steps: S1. Collect indoor air quality information and personnel physical condition information respectively; S2. Data processing is performed on indoor air quality information and personnel physical condition information respectively to obtain the first purification demand index. Second purification demand index ; S3, Demand Index for First Purification Second purification demand index The air purification index is obtained by performing a weighted calculation. The weighted calculation formula is as follows: In the formula, and These are the weighting coefficients, and .

[0025] S4. Determine the minimum threshold. and highest threshold and the air purification index With minimum threshold and highest threshold A comparison was made to determine the purification mode of air purifier 5.

[0026] Furthermore, in step S2, the first purification demand index This is correlated with indoor air quality information, which includes PM2.5 and volatile organic compound (VOC) levels in the air. Both are normalized to obtain the first air purification demand index. The formula for calculating the first purification demand index is as follows: In the formula, PM2.5 content, This serves as a reference threshold for PM2.5 levels. The content of volatile organic compounds, This serves as a reference threshold for the content of volatile organic compounds. and These are the weighting coefficients. It is the primary purification demand index.

[0027] To further explain, the measured PM2.5 and volatile organic compound (VOC) concentrations are compared with their corresponding reference thresholds to obtain a ratio, which is then normalized. This ratio is then weighted to obtain the first air purification demand index, which is typically between 0 and 1. Furthermore, the reference threshold can be selected as the national air quality standard or a health threshold.

[0028] Furthermore, in step S2, the second purification demand index It is linked to personnel's physical condition information, among which, the second purification demand index The calculation formula is: In the formula, The second purification index, Provides users with real-time blood oxygen saturation. For reference blood oxygen saturation, For the user's breathing rate, For reference respiratory rate, For user heart rate, For reference heart rate, ~ These are the weighting coefficients, and , This is the heart rate correction factor.

[0029] To further explain, these figures represent the purification requirements corresponding to blood oxygen, respiratory rate, and heart rate, respectively, and are weighted and summed to obtain the second purification requirement index. Furthermore, when a user experiences abnormal blood oxygen levels, their real-time blood oxygen saturation is lower than the reference saturation. Therefore, the formula for the blood oxygen purification requirement is: ,Right now When the respiratory rate is abnormal, it is usually due to increased oxygen demand, meaning the user's respiratory rate is greater than the reference respiratory rate. Therefore, the formula for respiratory-related purification demand is: Heart rate fluctuations can be lower than the reference heart rate, especially at rest when the body is relatively relaxed. Therefore, a value of 1 is set as the basic parameter. Thus, the formula for heart rate-related purification requirements is: .

[0030] Furthermore, in actual calculations, because user health factors play a primary role, the air purification index... The weighted calculation formula can be directly set as: In the formula: ~ These are the weighting coefficients, and .

[0031] Furthermore, a minimum threshold was determined. and highest threshold When the air purification index Below the minimum threshold At that time, air purifier 5 maintains the lowest power operation, and when the air purification index... At the lowest threshold and highest threshold During this period, the air purifier 5 operates at higher power and its various functions are enhanced, and the air purification index increases. Above the highest threshold At that time, the air purifier 5 maintains its highest power operation.

[0032] To further explain, through the air purification index Threshold comparison is performed to determine the air purification index from multiple dimensions. When one indicator is too high or multiple indicators show slight fluctuations simultaneously, the air purification index... All of these will change to some extent, thereby capturing the risk and taking appropriate measures to avoid it, thus preventing omissions caused by each indicator not exceeding the specified threshold.

[0033] For example, if a slight increase in indoor air pollutants is detected, but at the same time, a person's breathing rate also increases, if these two factors are judged separately, neither will exceed a very high threshold, and the air purifier can simply operate in low-power mode. However, by weighting and integrating these factors, the air purification index can be clearly seen. The overall temperature rises, requiring the air purifier to switch to medium power mode to efficiently purify indoor air and avoid potential risks.

[0034] Furthermore, during the initial setup, personalized optimizations can be performed for each user. The specific steps are as follows: A1. Collect user's physical condition information, determine the reference value to be optimized based on the user's physical condition information, and modify it. The reference value is reference blood oxygen saturation. Reference respiratory rate and reference heart rate One or more of them; A2. Determine the initial weighting coefficient and minimum threshold based on the user's physical condition information. and highest threshold The initial value.

[0035] In one embodiment, the user is an elderly person, and their reference heart rate needs to be modified accordingly. Conversely, the weights related to heart rate (such as...) or The value of ) also increases accordingly.

[0036] In another embodiment, if the user is an asthma patient, the reference respiratory rate and reference blood oxygen saturation need to be modified accordingly, and the weights related to air quality and respiratory rate need to be increased (e.g., and , or ~ ).

[0037] At the same time, when dealing with elderly users and users with underlying medical conditions, the minimum threshold and highest threshold It is also set to a lower level, making it easier to trigger, in order to meet users' air purification needs.

[0038] Furthermore, after completing the initial setup, dynamic adjustments can be made during use. The specific steps are as follows: B1. Store the real-time collected information on the physical condition of the personnel as historical data; B2. Analyze the relationship between various physical indicators of personnel and time based on historical data, and adjust the reference values ​​and / or weighting coefficients within the corresponding time period.

[0039] For example, if a user experiences a frequent drop in blood oxygen saturation at night, and subsequently uses air purification methods at night, the system will automatically increase the weighting coefficients related to air quality and breathing rate during that time period (e.g., ...). and , or ~ This makes it easier to trigger changes in the purification mode, and after this period of time, the weight coefficients are restored.

[0040] Furthermore, this invention primarily targets individual private spaces. If there are multiple people in the indoor space, the focus is on the person most in need of air purification (the elderly, patients), or the invention collects information on the physical condition of multiple individuals and calculates an air purification index for each person. And the lowest one among them is used as the criterion for judgment.

[0041] As another aspect of the present invention, an indoor air purification system based on an air purifier is also proposed, comprising an environmental detection module 1, a human body detection module 2, a central processing module 3, and an air purifier 5, wherein... The environmental detection module 1 is placed indoors to collect indoor air quality information, while the human body detection module 2 is in contact with the surface of the person's body to collect information on the person's physical condition. The central processing module 3 is communicatively connected to the environmental monitoring module 1 and the human body monitoring module 2, respectively, to receive indoor air quality information and human physical condition information, process the data, and obtain the air purification index. The air purification index is compared with the threshold to determine the purification mode of air purifier 5 and generate control commands. The air purifier 5 is communicatively connected to the central processing module 3, and is used to receive the control commands and perform corresponding purification operations.

[0042] Furthermore, the air purifier 5 includes a fan, a filter assembly with multiple filtration channels, and a negative ion generator. The air purifier 5 has three modes: Low power operation mode: The fan runs quietly at low speed, and the filter module opens one filtration channel; Medium power operation mode: The fan speed is increased, and multiple filter channels in the filter cartridge are opened, but not all of them are open. The negative ion generator releases negative ions intermittently. In high-power mode, the fan speed is set to the highest, the filter channels in the filter set are fully open, and the negative ion generator releases negative ions in sequence.

[0043] To further explain, the three operating modes and the air purification index The judgment result corresponds to the automatic adjustment of the air purifier 5.

[0044] Furthermore, the environmental monitoring module 1 performs real-time environmental monitoring, while the human body monitoring module 2 collects relevant data every minute. Preferably, the central processing module 3 performs noise filtering on the collected data to reduce noise.

[0045] Furthermore, the air purification system also includes a storage module 4, which is communicatively connected to the central processing module 3 and is used to store historical detection information to support the central processing module 3 in performing historical data analysis.

[0046] More preferably, the human body detection module 2 includes a wearable human body data acquisition device, such as a smart bracelet, smartwatch, or pulse oximeter; and / or, the environmental detection module 1 includes a PM2.5 sensor and a volatile organic compound sensor.

[0047] Furthermore, the air purification system also includes a fan and / or a temperature and humidity control device; and the environmental monitoring module 1 includes a CO2 sensor and / or a temperature and humidity sensor.

[0048] To further explain, when optimizing indoor air quality, in addition to reducing particulate matter and harmful organic compounds in the air, it is also necessary to appropriately adjust the oxygen content and temperature and humidity. A CO2 sensor is installed so that fresh air can be introduced through the ventilation fan when a high CO2 content is detected. Alternatively, the ventilation fan can be configured independently so that when a user's real-time blood oxygen saturation is detected to be low, the ventilation fan can be activated to introduce fresh air and increase the oxygen content of the indoor air.

[0049] Furthermore, the air purifier 5 can also be equipped with a dehumidifying filter to dehumidify when the temperature and humidity sensor detects excessive ambient humidity, and a humidifying device 7 can be installed to meet humidity control requirements. Even further, the temperature and humidity sensor can communicate with the central processing module 3, which in turn communicates with the air conditioner 6, thereby enabling temperature regulation of the indoor environment and achieving comprehensive automated control of the indoor environment.

[0050] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An indoor air purification method based on an air purifier, characterized in that, Includes the following steps: S1. Collect indoor air quality information and personnel physical condition information respectively; S2. Process the indoor air quality information and the physical condition information of the personnel respectively to obtain the first purification demand index. Second purification demand index ; S3, Regarding the first purification demand index and the second purification demand index The air purification index is obtained by performing a weighted calculation. The weighted calculation formula is as follows: In the formula, and These are the weighting coefficients, and ; S4. Determine the minimum threshold. and highest threshold and the air purification index With the minimum threshold and the highest threshold Comparisons are made to determine the purification mode of the air purifier.

2. The indoor air purification method based on an air purifier according to claim 1, wherein, The indoor air quality information includes the PM2.5 content and volatile organic compound content in the indoor space. The air parameters are normalized to obtain the first purification demand index. .

3. The indoor air purification method based on an air purifier according to claim 2, wherein, The personnel's physical condition information includes the user's real-time blood oxygen saturation. User breathing rate User heart rate ; Second purification demand index The calculation formula is: In the formula, The second purification index, Provides users with real-time blood oxygen saturation. For reference blood oxygen saturation, For the user's breathing rate, For reference respiratory rate, For user heart rate, For reference heart rate, ~ These are the weighting coefficients, and , This is the heart rate correction factor.

4. The indoor air purification method based on an air purifier according to claim 3, wherein, It also includes personalized optimization methods, the specific steps of which are as follows: A1. Collect user's physical condition information, determine the reference value to be optimized based on the user's physical condition information, and modify it. The reference value is reference blood oxygen saturation. Reference respiratory rate and reference heart rate One or more of them; A2. Determine the initial weighting coefficient and minimum threshold based on the user's physical condition information. and highest threshold The initial value.

5. The indoor air purification method based on an air purifier according to claim 4, wherein, It also includes dynamic optimization methods, the specific steps of which are as follows: B1. Store the real-time collected information on the physical condition of the personnel as historical data; B2. Analyze the relationship between personnel's physical condition information and time based on historical data, and adjust the reference values ​​and / or weighting coefficients within the corresponding time period.

6. An indoor air purification system based on an air purifier, characterized in that, It includes an environmental monitoring module, a human body monitoring module, a central processing module, and an air purifier; The environmental detection module is located indoors and is used to collect indoor air quality information. The human body detection module is in contact with the surface of the person's body and is used to collect the person's physical condition information. The central processing module is communicatively connected to the environmental detection module and the human body detection module, respectively, and is used to receive indoor air quality information and human physical condition information, process the data, obtain the air purification index, compare the air purification index with the threshold, determine the purification mode of the air purifier, and generate control commands. The air purifier is communicatively connected to the central processing module to receive the control commands and perform corresponding purification operations.

7. The indoor air purification system based on an air purifier according to claim 6, wherein, The air purifier includes a fan, a negative ion generator, and a filter assembly with multiple filtration channels.

8. The indoor air purification system based on an air purifier according to claim 6, wherein, It also includes a storage module, which is communicatively connected to the central processing module and is used to receive and store historical detection information.

9. The indoor air purification system based on an air purifier according to claim 6, wherein, The human body detection module includes a wearable human body data acquisition device; And / or, The environmental monitoring module includes a PM2.5 sensor and a volatile organic compound sensor.

10. The indoor air purification system based on an air purifier according to any one of claims 6 to 9, wherein, It also includes ventilation fans and / or temperature and humidity control devices; And / or, The environmental monitoring module includes a CO2 sensor and / or a temperature and humidity sensor.

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