Fresh air control method and device based on indoor and outdoor air quality and fresh air air conditioner

Abstract

The application relates to the fresh air technology field and discloses a fresh air control method based on indoor and outdoor air quality. The fresh air control method comprises the following steps: obtaining the advantages and disadvantages between indoor air quality and outdoor air quality corresponding to each air quality index; when the outdoor air quality is worse than the indoor air quality, taking a first preset value as a relative air quality parameter corresponding to the air quality index; when the outdoor air quality is better than the indoor air quality, taking a preset value related to indoor detection data as the relative air quality parameter corresponding to the air quality index; and when the weighted average value / weighted sum of the relative air quality parameters is compared with a set threshold value, and the comparison result indicates that the overall outdoor air quality is better than the overall indoor air quality, the fresh air device is started. The fresh air control method can improve the fresh effect of indoor air. The application further discloses a fresh air control device based on indoor and outdoor air quality and a fresh air air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fresh air technology, for example to a fresh air control method and device based on indoor and outdoor air quality and a fresh air air conditioner. BACKGROUND

[0002] Currently, a fresh air device is usually installed to adjust various air quality indexes (such as CO2 concentration, formaldehyde concentration, and PM2.5 concentration, etc.) in the room, such as adjusting the CO2 concentration in the room, adjusting the formaldehyde concentration in the room, and adjusting the PM2.5 concentration. During the operation of the fresh air, a certain positive pressure is maintained in the room relative to the outdoor air to enable air circulation in the room and achieve indoor air exchange.

[0003] In general, when the outdoor air quality is better than the indoor air quality parameters, the fresh air system can be turned on to achieve indoor air exchange. For example, the indoor air quality can be determined by collecting formaldehyde concentration information, PM2.5 concentration information, carbon oxide gas concentration information, hydrogen sulfide gas concentration information, temperature information, and humidity information, and using a fuzzy comprehensive evaluation method to comprehensively evaluate the formaldehyde concentration information, PM2.5 concentration information, carbon oxide gas concentration information, hydrogen sulfide gas concentration, temperature information, and humidity information to determine the indoor air quality.

[0004] In the process of implementing the embodiments of the present application, it is found that at least the following problems exist in the related art:

[0005] In the control process of the fresh air device, outdoor air is sucked into the room to complete air circulation in the room. At this time, the indoor air quality is calculated independently, the outdoor air quality is ignored, and the fresh air device is controlled only based on the indoor air quality, which can easily lead to poor fresh air effect on indoor air.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0007] To have a basic understanding of some aspects of the disclosed embodiments, a brief overview is given below. The overview is not an overall description of the application, nor is it intended to identify key / important elements or delineate the scope of the embodiments, but to serve as a prelude to the detailed description below.

[0008] The embodiments of the present application provide a fresh air control method and device based on indoor and outdoor air quality and a fresh air air conditioner to improve the fresh air effect on indoor air.

[0009] In some embodiments, the fresh air control method based on indoor and outdoor air quality comprises: obtaining a superior-inferior relationship between indoor air quality represented by indoor detection data and outdoor air quality represented by outdoor detection data corresponding to each air quality index; in the case that the outdoor air quality corresponding to the air quality index is inferior to the indoor air quality, taking a first preset value as a relative air quality parameter corresponding to the air quality index; in the case that the outdoor air quality corresponding to the air quality index is superior to the indoor air quality, taking a preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index; in the case that a weighted average / sum of the relative air quality parameters corresponding to at least two air quality indexes is superior to a set threshold, turning on a fresh air device to ventilate the indoor and outdoor air.

[0010] Optionally, taking the preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index comprises: obtaining a data range in which the indoor detection data is located; if the indoor detection data is in a first data range, taking a second preset value as the relative air quality parameter corresponding to the air quality index, if the indoor detection data is in a second data range, taking a third preset value as the relative air quality parameter corresponding to the air quality index, the indoor air quality represented by the second data range is inferior to the air quality represented by the first data range; or, if a difference between the indoor detection data and the outdoor detection data is in a first data range, taking a second preset value as the relative air quality parameter corresponding to the air quality index, if the difference between the indoor detection data and the outdoor detection data is in a second data range, taking a third preset value as the relative air quality parameter corresponding to the air quality index, the value of the first data range is smaller than the value of the second data range; the first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value; or, the first preset value is larger than the second preset value, and the second preset value is larger than the third preset value.

[0011] Optionally, the set threshold is determined according to an average value of the first preset value and the second preset value.

[0012] Optionally, the better and worse of the outdoor overall air quality and the indoor overall air quality is determined by: in the case that the first preset value is less than the second preset value, and the second preset value is less than the third preset value, if the weighted average value / weighted sum is greater than the set threshold, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average value / weighted sum is less than or equal to the set threshold, it is determined that the outdoor overall air quality is worse than the indoor overall air quality; in the case that the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value, if the weighted average value / weighted sum is less than the set threshold, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average value / weighted sum is greater than or equal to the set threshold, it is determined that the outdoor overall air quality is worse than the indoor overall air quality.

[0013] Optionally, the first type of air quality index and the second type of air quality index are obtained in the at least two air quality indexes; the first type of air quality index is an air quality index affected by user activity, or an air quality index that threatens the health status of the user; the second type of air quality index is an air quality index other than the first type of air quality index in the at least two air quality indexes; for the first type of air quality index, in the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, a preset value related to the indoor detection data is taken as the relative air quality parameter corresponding to the air quality index; for the second type of air quality index, in the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, a second preset value is taken as the relative air quality parameter corresponding to the air quality index; the preset value related to the indoor detection data and the second preset value are both greater than the first preset value, and the preset value related to the indoor detection data is greater than or equal to the second preset value; or, the preset value related to the indoor detection data and the second preset value are both less than the first preset value, and the preset value related to the indoor detection data is less than or equal to the second preset value.

[0014] Optionally, the fresh air control method based on indoor and outdoor air quality further comprises: in the case that the preset value related to the indoor detection data is greater than the first preset value, for any air quality index, if the outdoor detection data belongs to the value range of serious pollution, a fourth preset value is taken as the relative air quality parameter corresponding to the air quality index; the fourth preset value is less than the first preset value, and the difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times of the difference between the preset value related to the indoor detection data and the first preset value; in the case that the preset value related to the indoor detection data is less than the first preset value, for any air quality index, if the outdoor detection data belongs to the value range of serious pollution, the fourth preset value is taken as the relative air quality parameter corresponding to the air quality index; the fourth preset value is greater than the first preset value, and the difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times of the difference between the preset value related to the indoor detection data and the first preset value.

[0015] Optionally, the obtaining of the superior-inferior relationship between the indoor air quality represented by the indoor detection data and the outdoor air quality represented by the outdoor detection data corresponding to each air quality index comprises: in the case that the lower the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality; in the case that the higher the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

[0016] In some embodiments, the fresh air control device based on indoor and outdoor air quality comprises a first obtaining module, a first determining module, a second determining module and a control module; the first obtaining module is configured to obtain a superior-inferior relationship between indoor air quality represented by indoor detection data and outdoor air quality represented by outdoor detection data corresponding to each air quality index; the first determining module is configured to, in the case that the outdoor air quality corresponding to the air quality index is inferior to the indoor air quality, take a first preset value as a relative air quality parameter corresponding to the air quality index; the second determining module is configured to, in the case that the outdoor air quality corresponding to the air quality index is superior to the indoor air quality, take a preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index; and the control module is configured to, in the case that a weighted average / weighted sum of the relative air quality parameters corresponding to at least two air quality indexes, compared with a set threshold, indicates that the overall outdoor air quality is superior to the overall indoor air quality, start the fresh air device to ventilate the indoor and outdoor air.

[0017] In some embodiments, the fresh air control device based on indoor and outdoor air quality comprises a processor and a memory storing program instructions, and the processor is configured to execute the program instructions to perform the fresh air control method based on indoor and outdoor air quality provided in the foregoing embodiments.

[0018] In some embodiments, the fresh air air conditioner comprises the fresh air control device based on indoor and outdoor air quality provided in the foregoing embodiments.

[0019] The fresh air control method, device and fresh air air conditioner based on indoor and outdoor air quality provided in the embodiments of the present application can achieve the following technical effects:

[0020] For any air quality index, the first preset value or the preset value related to the indoor detection data is used to represent, as a relative air quality parameter corresponding to the air quality index, the superior-inferior situation of the outdoor air quality relative to the indoor air quality determined based on the air quality index. The process of calculating a weighted average / weighted sum of the relative air quality parameters corresponding to at least two air quality indexes, with each air quality index as a dimension, is to integrate multiple dimensions together to obtain a parameter that can reflect the superior-inferior situation of the overall outdoor air quality relative to the overall indoor air quality. In the case that the weighted average / weighted sum, compared with a set threshold, indicates that the overall outdoor air quality is superior to the overall indoor air quality, the fresh air device is started to introduce the outdoor air with better overall air quality into the indoor air, thereby improving the fresh effect of the indoor air.

[0021] The general description above and the following description below are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the figures that are described in connection with the following illustrative and non-limiting examples in which the same reference notations are employed to designate similar elements, and wherein:

[0023] Figure 1 is an implementation scenario of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application;

[0024] Figure 2 is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application;

[0025] Figure 3 is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application;

[0026] Figure 4 is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application;

[0027] Figure 5 is a schematic diagram of a fresh air control device based on indoor and outdoor air quality provided by an embodiment of the present application;

[0028] Figure 6 is a schematic diagram of a fresh air control device based on indoor and outdoor air quality provided by an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to enable persons skilled in the art to better understand the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present application. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0030] The terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0031] Unless otherwise specified, the term "a plurality of" means two or more.

[0032] In the embodiments of the present application, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B means A or B.

[0033] The term "and / or" is a description of the association relationship between objects, which means that there can be three relationships. For example, A and / or B means that there are three relationships of A or B, or A and B.

[0034] Figure 1 is an implementation scenario diagram of a fresh air control method based on indoor and outdoor air quality provided by the embodiments of the present application.

[0035] As shown in Figure 1 , the room is provided with a fresh air device 11 capable of realizing air flow between indoor and outdoor. The fresh air device 11 can be an independent fresh air machine, can be a fresh air system composed of a supply air system and an exhaust air system, and can also be a fresh air air conditioner with fresh air function.

[0036] The outdoor is provided with a PM2.5 sensor 12 for detecting the PM2.5 concentration of the outdoor; correspondingly, the indoor is provided with a PM2.5 sensor 13 for detecting the PM2.5 concentration of the indoor.

[0037] The outdoor is provided with a formaldehyde sensor 14 for detecting the outdoor formaldehyde concentration; correspondingly, the indoor is provided with a formaldehyde sensor 15 for detecting the indoor formaldehyde concentration.

[0038] The outdoor is provided with a CO2 sensor 16 for detecting the outdoor CO2 concentration; correspondingly, the indoor is provided with a CO2 sensor 17 for detecting the indoor CO2 concentration.

[0039] The outdoor is provided with a humidity sensor 18 for detecting the outdoor humidity; correspondingly, the indoor is provided with a humidity sensor 19 for detecting the indoor humidity.

[0040] Figure 1 The indoor is provided with four types of sensors, respectively for obtaining indoor detection data and outdoor detection data corresponding to four types of air indexes, and in specific applications, two or three of the above four types of sensors can also be provided. Or, as shown in Figure 1 , sensors of other types such as CO sensor, SO2 sensor, H2S sensor, natural gas sensor, etc. can also be provided. Those skilled in the art can select appropriate types of sensors according to actual needs, but at least two types of sensors need to be provided to detect indoor detection data and outdoor detection data corresponding to two types of air quality indexes.

[0041] Figure 2is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application. The fresh air control method based on indoor and outdoor air quality can be run in a fresh air machine, a central fresh air system, or a fresh air air conditioner.

[0042] In combination Figure 2 As shown in the figure, the fresh air control method based on indoor and outdoor air quality includes the following steps.

[0043] S201, obtaining the superior-inferior relationship between the indoor air quality represented by the indoor detection data corresponding to each air quality index and the outdoor air quality represented by the outdoor detection data.

[0044] The air quality index includes but is not limited to relative air humidity, CO2 concentration, PM2.5 concentration, PM10 concentration, formaldehyde concentration, CO concentration, SO2 concentration, H2S concentration, and natural gas concentration.

[0045] The number of air quality indexes is more than two. Before executing the fresh air control method based on indoor and outdoor air quality provided by the present application, the more than two air quality indexes have been determined in advance, which can be manually set by the user or set by the device before leaving the factory.

[0046] Each air quality index corresponds to one indoor detection data and one outdoor detection data. For example, in the case of PM2.5 concentration as the air quality index, the indoor detection data of PM2.5 concentration is obtained by a PM2.5 sensor set indoors, and the outdoor detection data of PM2.5 concentration is obtained by a PM2.5 sensor set outdoors; in the case of CO2 concentration as the air quality index, the indoor detection data of CO2 concentration is obtained by a CO2 sensor set indoors, and the outdoor detection data of CO2 concentration is obtained by a CO2 sensor set outdoors. Here, only PM2.5 concentration and CO2 concentration are taken as air quality indexes to exemplarily illustrate the indoor detection data and outdoor detection data of the air quality index, which does not limit the specific meaning of the air quality index. When the air quality index is other content, one skilled in the art can follow the example to obtain the indoor detection data and outdoor detection data corresponding to other air quality indexes.

[0047] Obtaining the superior-inferior relationship between the indoor air quality represented by the indoor detection data corresponding to each air quality index and the outdoor air quality represented by the outdoor detection data can include the following two cases:

[0048] In the case that the lower the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

[0049] For example, in the case that the air quality index is formaldehyde concentration, if the outdoor detection data is less than the indoor detection data, it indicates that the outdoor air quality is better than the indoor air quality; if the outdoor detection data is greater than the indoor detection data, it indicates that the outdoor air quality is worse than the indoor air quality.

[0050] In the case that the air quality index is PM2.5, if the outdoor detection data is less than the indoor detection data, it indicates that the outdoor air quality is better than the indoor air quality; if the outdoor detection data is greater than the indoor detection data, it indicates that the outdoor air quality is worse than the indoor air quality.

[0051] In the case that the air quality index is CO2 concentration, if the outdoor detection data is less than the indoor detection data, it indicates that the outdoor air quality is better than the indoor air quality; if the outdoor detection data is greater than the indoor detection data, it indicates that the outdoor air quality is worse than the indoor air quality.

[0052] In the case that the higher the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

[0053] S202, in the case that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality, a first preset value is taken as a relative air quality parameter corresponding to the air quality index.

[0054] The first preset value can be a number determined by a person skilled in the art according to daily use habits. For example, the number 1 can be taken as the first preset value, the number -1 can be taken as the first preset value, or the number 0 can be taken as the first preset value.

[0055] The relative air quality parameter corresponding to the air quality index indicates the relative advantages and disadvantages of the outdoor air quality and the indoor air quality in the dimension of the air quality index.

[0056] In the case of the air quality index being the formaldehyde concentration, if the outdoor detection data is greater than the indoor detection data, it is determined that the outdoor air quality is worse than the indoor air quality, and the first preset value is taken as the relative air quality parameter corresponding to the formaldehyde concentration.

[0057] In the case of the air quality index being the PM2.5 concentration, if the outdoor detection data is greater than the indoor detection data, it is determined that the outdoor air quality is worse than the indoor air quality, and the first preset value is taken as the relative air quality parameter corresponding to the PM2.5 concentration.

[0058] In the case of the air quality index being the CO2 concentration, if the outdoor detection data is greater than the indoor detection data, it is determined that the outdoor air quality is worse than the indoor air quality, and the first preset value is taken as the relative air quality parameter corresponding to the CO2 concentration.

[0059] S203, in the case of the air quality index corresponding to the outdoor air quality being better than the indoor air quality, a preset value related to the indoor detection data is taken as the relative air quality parameter corresponding to the air quality index.

[0060] The preset value related to the indoor detection data is a value of the same order of magnitude as the first preset value. The preset value related to the indoor detection data is not the same as the first preset value; the preset value related to the indoor detection data can be greater than the first preset value, and the preset value related to the indoor detection data can also be less than the first preset value.

[0061] For example, in the case of the first preset value being 1, the preset value related to the indoor detection data can be 2, 3, or 4, etc.; in the case of the first preset value being 0, the preset value related to the indoor detection data can be 1, 2, 3, or 4, etc.; in the case of the first preset value being -1, the preset value related to the indoor detection data can be 0, 1, 2, or 3, etc.; in the case of the first preset value being 1, the preset value related to the indoor detection data can be 0, -1, or -2, etc.

[0062] The indoor detection data can represent the advantages and disadvantages of the indoor air quality. In the case of the larger the indoor detection data, the worse the indoor air quality, if the preset value related to the indoor detection data is greater than the first preset value, there is a positive correlation between the indoor detection data and the preset value; if the preset value related to the indoor detection data is less than the first preset value, there is a negative correlation between the indoor detection data and the preset value.

[0063] In the case of the smaller the indoor detection data, the worse the indoor air quality, if the preset value related to the indoor detection data is greater than the first preset value, there is a negative correlation between the indoor detection data and the preset value; if the preset value related to the indoor detection data is less than the first preset value, there is a positive correlation between the indoor detection data and the preset value.

[0064] S204、in the case that the comparison result of the weighted average value / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes and the set threshold value indicates that the overall outdoor air quality is better than the overall indoor air quality, turning on the fresh air device to ventilate the indoor and outdoor.

[0065] The comparison result of the weighted average value / weighted sum and the set threshold value refers to the comparison result of the numerical value.

[0066] The set threshold value has a matching relationship in numerical value with the aforementioned relative air quality parameter, for example, in the case that the number of air quality indexes is 4 and the value range of the relative air quality parameter is -1 to 1, the value range of the set threshold value is -1 to 1 in the case that the weighted average value is used to indicate the advantage or disadvantage of the outdoor air quality relative to the indoor air quality, and the value range of the set threshold value is -4 to 4 in the case that the weighted sum is used to indicate the advantage or disadvantage of the outdoor air quality relative to the indoor air quality.

[0067] In specific applications, the case that the weighted average value / weighted sum is greater than the set threshold value can be determined as the case that the overall outdoor air quality is better than the overall indoor air quality; of course, the case that the weighted average value / weighted sum is less than or equal to the set threshold value can also be determined as the case that the overall outdoor air quality is better than the overall indoor air quality.

[0068] For any air quality index, the first preset numerical value or the preset numerical value related to the indoor detection data is used to indicate the relative air quality parameter corresponding to the air quality index, which can indicate the advantage or disadvantage of the outdoor air quality relative to the indoor air quality based on the air quality index. The process of calculating the weighted average value / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes is to integrate multiple dimensions together to obtain a parameter that can reflect the advantage or disadvantage of the overall outdoor air quality and the overall indoor air quality. In the case that the comparison result of the weighted average value / weighted sum and the set threshold value indicates that the overall outdoor air quality is better than the overall indoor air quality, the fresh air device is turned on to introduce the outdoor air with better overall air quality into the indoor, thereby improving the fresh effect on the indoor air.

[0069] In the process of calculating the weighted average value / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes, the weight of each air quality index can be a factory setting.

[0070] Alternatively, the weighted average / sum of the relative air quality parameters corresponding to the at least two air quality indexes can be calculated by: obtaining a weight sequence related to the user demand, each weight in the weight sequence corresponding to one air quality index; and calculating the weighted average / sum of the relative air quality parameters corresponding to the at least two air quality indexes according to the weight sequence.

[0071] The following is an exemplary description of the one-to-one correspondence between the weights in the weight sequence and the air quality indexes, taking the air quality indexes of relative air humidity, CO2 concentration, PM2.5 concentration, and formaldehyde concentration as examples. The air quality indexes are arranged in sequence, for example, the arrangement order of the air quality indexes is: relative air humidity, CO2 concentration, PM2.5 concentration, and formaldehyde concentration. Then, according to the order from first to last, the first weight in the weight sequence corresponds to the relative air humidity, the second weight in the weight sequence corresponds to the CO2 concentration, the third weight in the weight sequence corresponds to the PM2.5 concentration, and the fourth weight in the weight sequence corresponds to the formaldehyde concentration.

[0072] The weight sequence can be manually set by the user, for example, the user sets each weight in the weight sequence in sequence.

[0073] Further, the weight sequence related to the user demand can be obtained by: obtaining a basic weight sequence; detecting the user's adjustment to the basic weight sequence; and taking the adjusted basic weight sequence as the final weight sequence. The basic weight sequence can be set by the factory, and each weight in the basic weight sequence is the same, or the values of the weights in the basic weight sequence are positively correlated with the severity indicated by the average outdoor data of the air quality index corresponding to the weight.

[0074] By setting the basic weight sequence, the user does not need to adjust all the weights in the weight sequence to obtain the weight sequence related to the user demand.

[0075] In addition, the basic weight sequence has a corresponding relationship with the aforementioned first preset value, second preset value, and set threshold, so that the obtained weighted average / sum matches the value of the set threshold. In this way, by setting the basic weight sequence, the user needs to make fewer adjustments, which is conducive to maintaining the matching relationship between the obtained weighted average / sum and the value of the set threshold.

[0076] Alternatively, the weighted average / sum of the relative air quality parameters corresponding to the at least two air quality indexes can also be calculated by: obtaining a weight sequence corresponding to a scene mode, and calculating the weighted average / sum of the relative air quality parameters corresponding to the at least two air quality indexes according to the weight sequence.

[0077] The scene mode mostly refers to a scene mode in a smart home scene, such as a sleep mode, a wake-up mode, a special care mode for some allergic people (for example, a patient with rhinitis), and the like; of course, for some smart offices, the scene mode can also be a scene mode in an office scene, such as a conference scene, a shared negotiation area scene, a reception scene, and the like.

[0078] The weights in the weight sequence correspond to the air quality indexes one by one, and the size of the weight corresponding to the air quality index is positively correlated with the importance of the air quality index in the scene mode.

[0079] The correspondence between the scene mode and the weight sequence can be pre-stored in a database in a one-to-one manner, and after the scene mode is obtained, the weight sequence corresponding to the scene mode can be obtained by querying the database.

[0080] The importance of the air quality index in the scene mode can be specified by the user, or can be automatically matched and recommended by big data or automatically calculated by an artificial intelligence algorithm.

[0081] In the above technical solution, each air quality index in the at least two air quality indexes is determined to correspond to a relative air quality parameter, each relative air quality parameter represents a judgment result of the outdoor air quality relative to the indoor air quality in one dimension, and then the weight sequence is used to represent the importance of different air quality indexes to the scene mode, so that the weighted average value / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes calculated according to the weight sequence can represent the superiority of the outdoor air quality relative to the indoor air quality on the basis of meeting the corresponding judgment standard of the scene mode, and then in the case that the comparison result of the weighted average value / weighted sum and the set threshold value represents that the outdoor air quality is superior to the indoor air quality, the fresh air device is started to introduce outdoor air with relatively superior air quality to the scene mode from the outdoor to the indoor, so that the fresh air is adapted to the scene mode and a better experience is provided for the user in the scene mode.

[0082] Further, obtaining the weight sequence corresponding to the scene mode includes: obtaining a user body state suitable for the scene mode, determining the weight of each air quality index in the at least two air quality indexes according to the degree of adverse effect of the air quality index on the user body state, and grouping the weights of the at least two air quality indexes to form the weight sequence.

[0083] The user body state includes a user body state in a life scene, for example, in a sleep scene, the user is in a sleep state, at which time the immunity is the lowest, that is, the user body state suitable for the sleep scene is the sleep state and the immunity is low.

[0084] The user body state further includes a user health state. For example, a part of a user with rhinitis has a higher requirement for air cleanliness, i.e., the user body state suitable for the health mode (one of the special care modes for allergic personnel) of the user with rhinitis is an onset of rhinitis, and the requirement for air cleanliness is high.

[0085] The scene mode and the user body state suitable for the scene mode can be stored in a database in the form of a one-to-one correspondence data table, and the user body state suitable for the scene mode can be obtained by querying the database.

[0086] The degree of adverse influence of the air quality index on the user body state is positively correlated with the weight of the air quality index. The influence of each air quality index on the user body state can be evaluated according to medical knowledge or medical experience, and then the degree of adverse influence of each air quality index on the user body state can be quantified, and finally the weight of each air quality index in the at least two air quality indexes can be determined.

[0087] For example, in the sleep scene, each system of the user's body is in a relaxed state, and the immunity in the sleep state is lower than that in the wakeful state. In addition, the overall indoor air quality usually affects the quality of the user's sleep. On this basis, according to experience, it can be considered that the degrees of adverse influence of several air quality indexes on the user body state are equivalent. Taking air quality indexes including formaldehyde concentration, PM2.5 concentration, CO2 concentration, and relative humidity as examples, in the sleep scene, the weight of formaldehyde can be 0.25, the weight of PM2.5 concentration can be 0.25, the weight of CO2 concentration can be 0.25, and the weight of relative humidity can be 0.25. The above analysis of the sleep scene and the enumeration of several air quality indexes and their weights in the sleep scene are only exemplary descriptions. In a specific use scene, a person skilled in the art should select appropriate air quality indexes in the sleep scene based on certain medical knowledge and experience, evaluate the influence of each air quality index on the user body state in the sleep state, and then quantify the degree of adverse influence of each air quality index on the user body state in the sleep mode.

[0088] In the special care mode for some allergic personnel, for example, the health mode of rhinitis patients, after the onset of rhinitis of the user, the cleanliness of the air is usually required to be higher, and the weight of the air quality index which can easily have certain effects (such as irritation, blockage, etc.) on the nasal cavity can be set to a relatively large value, and the weight of the air quality index which is not easy to have certain effects on the nasal cavity can be set to a relatively small value. Similarly, taking the air quality indexes including formaldehyde concentration, PM2.5 concentration, CO2 concentration and relative humidity as examples, in the health mode of rhinitis patients, it can be considered that the adverse effects of formaldehyde concentration and PM2.5 concentration on the nasal cavity are greater, and the weights of formaldehyde concentration and PM2.5 concentration are set to be larger; it can be considered that the adverse effects of CO2 concentration and relative humidity on the nasal cavity are smaller, and the weights of CO2 concentration and relative humidity are set to be relatively smaller, and the effect of relative humidity is usually greater than that of CO2 concentration on the nasal cavity. For example, the weight of formaldehyde concentration can be 0.35, the weight of PM2.5 concentration can be 0.35, the weight of CO2 concentration can be 0.1, and the weight of relative humidity can be 0.2. The above analysis of the health mode of rhinitis patients and the listed several air quality indexes and weights are only exemplary. In specific applications, for the health mode of rhinitis patients, the person skilled in the art needs to analyze the rhinitis of the patient based on certain medical knowledge and experience, determine the type of rhinitis of the patient, and then select appropriate air quality indexes according to the type of rhinitis of the user, evaluate the influence of each air quality index on the type of rhinitis, and then quantify the degree of adverse effects of each air quality index on the physical state of the rhinitis user.

[0089] By adopting the above technical solutions, in the case that the scene mode is different and the physical state of the user is different, even if the types of the air quality indexes are the same, different weighted average values / weighted sums can be calculated, so as to make the evaluation index of the outdoor air quality relative to the indoor air quality match the physical state of the user, which will be conducive to introducing the outdoor air with the physical state of the user into the indoor, updating the indoor air, improving the indoor air quality, and providing a better experience for the user in the scene mode.

[0090] In the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, there can be multiple relative air parameters corresponding to the air quality index.

[0091] For example, the preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index can include: obtaining the data range in which the indoor detection data is located; if the indoor detection data is in a first data range, a second preset value is taken as the relative air quality parameter corresponding to the air quality index; if the indoor detection data is in a second data range, a third preset value is taken as the relative air quality parameter corresponding to the air quality index; the indoor air quality represented by the second data range is worse than the air quality represented by the first data range, the first preset value is less than the second preset value, and the second preset value is less than the third preset value; or, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

[0092] The first data range and the second data range are pre-set data ranges, there is no overlapping data between the first data range and the second data range, and the first data range and the second data range can be two continuous data ranges, for example, the maximum value of the first data range and the minimum value of the second data range are continuous, or the minimum value of the first data range and the maximum value of the second data range are continuous.

[0093] The first data range and the second data range can also be two discontinuous data ranges, and there is one or more other data ranges between the first data range and the second data range. For example, there is one data range between the first data range and the second data range, if the indoor detection data belongs to the one data range, a preset value is taken as the relative air quality parameter corresponding to the air quality index, the first preset value is less than the second preset value, the second preset value is less than the above-mentioned one preset value, and the above-mentioned one preset value is less than the third preset value, or, the first preset value is greater than the second preset value, the second preset value is greater than the above-mentioned one preset value, and the above-mentioned one preset value is greater than the third preset value.

[0094] Or, the preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index can include: obtaining the data range in which the indoor detection data is located; or, if the difference between the indoor detection data and the outdoor detection data is in a first data range, a second preset value is taken as the relative air quality parameter corresponding to the air quality index, if the difference between the indoor detection data and the outdoor detection data is in a second data range, a third preset value is taken as the relative air quality parameter corresponding to the air quality index, the value of the first data range is less than the value of the second data range, the first preset value is less than the second preset value, and the second preset value is less than the third preset value; or, the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value.

[0095] The first data range and the second data range are preset data ranges, and there is no overlapping data between the first data range and the second data range. The first data range and the second data range can be two continuous data ranges, for example, the maximum value of the first data range is continuous with the minimum value of the second data range, or the minimum value of the first data range is continuous with the maximum value of the second data range.

[0096] The first data range and the second data range can also be two discontinuous data ranges, and there is one or more other data ranges between the first data range and the second data range. For example, there is one data range between the first data range and the second data range. If the difference between the indoor detection data and the outdoor detection data belongs to the one data range, a preset value is taken as the relative air quality parameter corresponding to the air quality index. The first preset value is less than the second preset value, the second preset value is less than the one preset value, and the one preset value is less than the third preset value, or the first preset value is greater than the second preset value, the second preset value is greater than the one preset value, and the one preset value is greater than the third preset value.

[0097] Further, in the process of determining the relative air quality parameter corresponding to the air quality index, the following two cases can also be included:

[0098] In the case where the preset value related to the indoor detection data is greater than the first preset value, for any air quality index, if the outdoor detection data belongs to the severely polluted value range, the fourth preset value is taken as the relative air quality parameter corresponding to the air quality index. The fourth preset value is less than the first preset value, and the difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times the difference between the preset value related to the indoor detection data and the first preset value.

[0099] In the case where the preset value related to the indoor detection data is less than the first preset value, for any air quality index, if the outdoor detection data belongs to the severely polluted value range, the fourth preset value is taken as the relative air quality parameter corresponding to the air quality index. The fourth preset value is greater than the first preset value, and the difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times the difference between the preset value related to the indoor detection data and the first preset value.

[0100] The following takes PM2.5 concentration as an example to illustrate the value range of severe pollution. The standard of PM2.5 concentration is as follows: 0-35 μg / m 3 belongs to excellent, 35-75 μg / m 3 belongs to good, 75-115 μg / m 3 belongs to light pollution, 115-150 μg / m3 belongs to moderate pollution, 150-250 μg / m 3 belongs to heavy pollution, 250 μg / m 3 The above belongs to severe pollution. In combination with the intuitive perception of air quality, 115 μg / m 3 The above can be taken as the numerical range of the aforementioned severe pollution, 150 μg / m 3 The above can be taken as the numerical range of severe pollution, 250 μg / m 3 The above can be taken as the numerical range of severe pollution.

[0101] The skilled person can determine the numerical range of severe pollution in combination with the commonly used way of measuring air quality and the intuitive perception of air quality.

[0102] The technical solution provided in the foregoing examples can reduce the situation that the new air device is still started when the single air quality is too poor.

[0103] The weighted average / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes is an evaluation result of the advantages and disadvantages of the outdoor overall air quality relative to the indoor overall air quality in multiple dimensions, and the threshold value represents the boundary of the outdoor overall air quality being the same as the indoor overall air quality.

[0104] The advantages and disadvantages of the outdoor overall air quality relative to the indoor overall air quality can be determined in the following manner:

[0105] In the case that the first preset value is less than the second preset value, and the second preset value is less than the third preset value, if the weighted average / weighted sum is greater than the threshold value, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average / weighted sum is less than or equal to the threshold value, it is determined that the outdoor overall air quality is worse than the indoor overall air quality.

[0106] In the case that the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value, if the weighted average / weighted sum is less than the threshold value, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average / weighted sum is greater than or equal to the threshold value, it is determined that the outdoor overall air quality is worse than the indoor overall air quality.

[0107] The skilled person can determine a specific value for the threshold value according to the specific meaning of the threshold value.

[0108] Alternatively, the threshold value is determined according to the average of the first preset value and the second preset value.

[0109] In the case that the first preset value is less than the second preset value, an average of the first preset value and the second preset value can be taken as the set threshold value; or, an average of the first preset value and the second preset value is calculated, and a sum of the average and the first increasing coefficient is taken as the set threshold value; or, an average of the first preset value and the second preset value is calculated, and a difference obtained by subtracting the first decreasing coefficient from the average is taken as the set threshold value. Or,

[0110] An average of the first preset value and the second preset value is calculated, and a product of the average and the number of the air quality indexes is taken as the set threshold value; or, a sum of the product and the first increasing coefficient is taken as the set threshold value; or, a difference obtained by subtracting the first decreasing coefficient from the product is taken as the set threshold value.

[0111] The first increasing coefficient reflects the user's demand for the quality of the fresh air; the higher the quality of the fresh air demanded by the user, the greater the first increasing coefficient, and the higher the degree that the outdoor overall air quality is better than the indoor overall air quality in the case that the fresh air device is turned on. The first decreasing coefficient reflects the user's demand for the frequency of the fresh air ventilation; the more the user is used to the fresh air ventilation into the room, the greater the first decreasing coefficient, but the lower the degree that the outdoor air quality is better than the indoor air quality in the case that the fresh air device is turned on.

[0112] The set threshold value determined by the first increasing coefficient can meet the user's demand for the quality of the fresh air, and the set threshold value determined by the first decreasing coefficient can meet the user's demand for the high frequency of the fresh air ventilation. The technical solutions for determining the set threshold value can meet different demands of different users.

[0113] In the case that the first preset value is greater than the second preset value, an average of the first preset value and the second preset value can be taken as the set threshold value; or, an average of the first preset value and the second preset value is calculated, and a difference obtained by subtracting the second decreasing coefficient from the average is taken as the set threshold value; or, an average of the first preset value and the second preset value is calculated, and a sum of the average and the second increasing coefficient is taken as the set threshold value. Or,

[0114] An average of the first preset value and the second preset value is calculated, and a product of the average and the number of the air quality indexes is taken as the set threshold value; or, a difference of the product and the second decreasing coefficient is taken as the set threshold value; or, a sum of the product and the second increasing coefficient is taken as the set threshold value.

[0115] The second reduction coefficient reflects the quality of fresh air quality required by the user. The higher the quality of fresh air quality required by the user, the greater the second reduction coefficient, and the higher the degree of outdoor overall air quality compared to indoor overall air quality when the fresh air device is turned on. The second increase coefficient reflects the user's demand for fresh air frequency. The more the user is used to introducing fresh air into the room, the greater the second increase coefficient, but the lower the degree of outdoor air quality compared to indoor air quality as a whole when the fresh air device is turned on.

[0116] The set threshold value determined by the second reduction coefficient can meet the user's demand for fresh air quality, and the set threshold value determined by the second increase coefficient can meet the user's demand for high-frequency fresh air. After adopting the technical solution for determining the set threshold value, different demands of different users can be met.

[0117] Figure 3 is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application. The fresh air control method based on indoor and outdoor air quality can be run in a fresh air machine, a central fresh air system, or a fresh air air conditioner.

[0118] S301, obtaining the relationship between the indoor air quality represented by the indoor detection data corresponding to each air quality index and the outdoor air quality represented by the outdoor detection data.

[0119] S302, in the case that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality, taking a first preset value as the relative air quality parameter corresponding to the air quality index.

[0120] S303, in the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, obtaining a first type of air quality index and a second type of air quality index among the at least two air quality indexes.

[0121] The first type of air quality index is an air quality index affected by user activity, and the second type of air quality index is an air quality index other than the first type of air quality index among the at least two air quality indexes.

[0122] For example, in the sleep mode, the CO2 concentration of indoor air will increase over time, especially in the case of poor ventilation in the bedroom, the increase of indoor air CO2 concentration is more obvious.

[0123] In the case that the at least two air quality indexes include formaldehyde concentration, PM2.5 concentration, CO2 concentration, and relative humidity, the CO2 concentration can be taken as the first type of air quality index, and the formaldehyde concentration, PM2.5 concentration, and relative humidity can be taken as the second type of air quality index.

[0124] Alternatively, the first type of air quality index is an air quality index that threatens the health status of the user, and the second type of air quality index is at least one air quality index other than the first type of air quality index.

[0125] For example, the concentration of formaldehyde in indoor air threatens the health status of a person, or for a patient with rhinitis, PM2.5 in indoor air easily leads to the exacerbation of symptoms.

[0126] In a case where the at least two air quality indexes include the concentration of formaldehyde, the concentration of PM2.5, the concentration of CO2, and the relative humidity, the concentration of formaldehyde and the concentration of PM2.5 can be taken as the first type of air quality index, and the concentration of CO2 and the relative humidity can be taken as the second type of air quality index.

[0127] Alternatively, the first type of air quality index is an air quality index that is affected by the user's activity and an air quality index that threatens the health status of the user, and the second type of air quality index is at least one air quality index other than the first type of air quality index.

[0128] S304, for the first type of air quality index, in a case where the outdoor air quality corresponding to the air quality index is better than the indoor air quality, a preset value related to the indoor detection data is taken as the relative air quality parameter corresponding to the air quality index.

[0129] S305, for the second type of air quality index, in a case where the outdoor air quality corresponding to the air quality index is better than the indoor air quality, a second preset value is taken as the relative air quality parameter corresponding to the air quality index.

[0130] The preset value related to the indoor detection data and the second preset value are both greater than the first preset value, and the preset value related to the indoor detection data is greater than or equal to the second preset value; or the preset value related to the indoor detection data and the second preset value are both less than the first preset value, and the preset value related to the indoor detection data is less than or equal to the second preset value.

[0131] S306, in a case where the weighted average / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes is better than the set threshold, indicating that the overall outdoor air quality is better than the overall indoor air quality, the fresh air device is started to ventilate the indoor and outdoor air.

[0132] The outdoor air quality corresponding to the air quality index is better than the indoor air quality, which means that when the air quality index is used to determine whether to start the fresh air device, the result is inclined to allow the fresh air device to be started. For the first type of air quality index, the preset value related to the indoor detection data is greater than or equal to the second preset value, or the preset value related to the indoor detection data is less than or equal to the second preset value, so that the influence of the preset value related to the indoor detection data on the weighted average value / weighted sum is highlighted, and the urgency of needing fresh air is reflected in the weighted average value / weighted sum, and then in the case that the first type of air quality index indicates that the outdoor air quality is better than the indoor air quality, the indoor fresh air is started in time to better maintain the health of the user.

[0133] In the foregoing embodiment, it is mentioned that the threshold value is determined according to the average of the first preset value and the second preset value, and on this basis, the preset value related to the indoor detection data and the second preset value are both greater than the first preset value, and the preset value related to the indoor detection data is greater than or equal to the second preset value; or, the preset value related to the indoor detection data and the second preset value are both less than the first preset value, and the preset value related to the indoor detection data is less than or equal to the second preset value. The corresponding relationship between the preset value related to the indoor detection data and the threshold value can improve the possibility that the weighted average value / weighted sum is greater than the threshold value (for the case that the preset value related to the indoor detection data and the second preset value are both greater than the first preset value, and the preset value related to the indoor detection data is greater than or equal to the second preset value), or improve the possibility that the weighted average value / weighted sum is less than the threshold value (for the case that the preset value related to the indoor detection data and the second preset value are both less than the first preset value, and the preset value related to the indoor detection data is less than or equal to the second preset value), to improve the possibility of the determination result: the comparison result is that the overall outdoor air quality is better than the overall indoor air quality, and then the frequency of starting the fresh air device is improved, and the health of the user is better maintained.

[0134] Figure 4 is a flowchart of a fresh air control method based on indoor and outdoor air quality provided by an embodiment of the present application. The fresh air control method based on indoor and outdoor air quality can be run in a fresh air machine, a central fresh air system, or a fresh air air conditioner.

[0135] S401, obtain the relationship between the indoor air quality represented by the indoor detection data corresponding to each air quality index and the outdoor air quality represented by the outdoor detection data.

[0136] S402、In the case that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality, a first preset value is taken as the relative air quality parameter corresponding to the air quality index.

[0137] S403、In the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, a preset value related to the indoor detection data is taken as the relative air quality parameter corresponding to the air quality index.

[0138] S404、In the case that the comparison result of the weighted average / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes and the set threshold value indicates that the overall outdoor air quality is better than the overall indoor air quality, the fresh air device is started to ventilate the indoor and outdoor.

[0139] S405、In the case that the comparison result of the weighted average / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes and the set threshold value indicates that the overall outdoor air quality is worse than the overall indoor air quality, the fresh air device is stopped to stop ventilating the indoor and outdoor.

[0140] Figure 5 is a schematic diagram of a fresh air control device based on indoor and outdoor air quality provided by an embodiment of the present application. The fresh air control device based on indoor and outdoor air quality can be realized in the form of software, hardware or a combination of software and hardware.

[0141] In combination with Figure 5 as shown, the fresh air control device based on indoor and outdoor air quality includes a first obtaining module 51, a first determining module 52, a second determining module 53 and a control module 54.

[0142] The first obtaining module 51 is configured to obtain the superiority-inferiority relationship between the indoor air quality represented by the indoor detection data and the outdoor air quality represented by the outdoor detection data corresponding to each air quality index.

[0143] The first determining module 52 is configured to, in the case that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality, take a first preset value as the relative air quality parameter corresponding to the air quality index.

[0144] The second determining module 53 is configured to, in the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, take a preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index.

[0145] The control module 54 is configured to, in the case that the comparison result of the weighted average / weighted sum of the relative air quality parameters corresponding to the at least two air quality indexes and the set threshold value indicates that the overall outdoor air quality is better than the overall indoor air quality, start the fresh air device to ventilate the indoor and outdoor.

[0146] Optionally, the first determining module 52 comprises an obtaining unit and a first determining unit.

[0147] The obtaining unit is configured to obtain a data range in which the indoor detection data is located.

[0148] The first determining unit is configured to, if the indoor detection data is in a first data range, set a second preset value as a relative air quality parameter corresponding to the air quality index, and if the indoor detection data is in a second data range, set a third preset value as the relative air quality parameter corresponding to the air quality index, the indoor air quality represented by the second data range being worse than the air quality represented by the first data range; the first preset value being less than the second preset value, and the second preset value being less than the third preset value; or, the first preset value being greater than the second preset value, and the second preset value being greater than the third preset value.

[0149] Alternatively, the first determining module 52 comprises an obtaining unit and a second determining unit.

[0150] The obtaining unit is configured to obtain a data range in which the indoor detection data is located.

[0151] The second determining unit is configured to, if a difference between the indoor detection data and the outdoor detection data is in a first data range, set a second preset value as a relative air quality parameter corresponding to the air quality index, and if the difference between the indoor detection data and the outdoor detection data is in a second data range, set a third preset value as the relative air quality parameter corresponding to the air quality index, the value of the first data range being less than the value of the second data range; the first preset value being less than the second preset value, and the second preset value being less than the third preset value; or, the first preset value being greater than the second preset value, and the second preset value being greater than the third preset value.

[0152] Optionally, the threshold value is determined according to an average of the first preset value and the second preset value.

[0153] Optionally, the relative situation between the overall outdoor air quality and the overall indoor air quality is determined in the following manner: in the case where the first preset value is less than the second preset value, and the second preset value is less than the third preset value, if the weighted average value / weighted sum is greater than the threshold value, it is determined that the overall outdoor air quality is better than the overall indoor air quality; and if the weighted average value / weighted sum is less than or equal to the threshold value, it is determined that the overall outdoor air quality is worse than the overall indoor air quality; in the case where the first preset value is greater than the second preset value, and the second preset value is greater than the third preset value, if the weighted average value / weighted sum is less than the threshold value, it is determined that the overall outdoor air quality is better than the overall indoor air quality; and if the weighted average value / weighted sum is greater than or equal to the threshold value, it is determined that the overall outdoor air quality is worse than the overall indoor air quality.

[0154] Optionally, the fresh air control device based on indoor and outdoor air quality further comprises a second obtaining module and a third determining module.

[0155] The second obtaining module is configured to obtain a first type of air quality index and a second type of air quality index from the at least two air quality indexes; the first type of air quality index is an air quality index affected by user activities or an air quality index that threatens the health status of the user; the second type of air quality index is an air quality index other than the first type of air quality index from the at least two air quality indexes; the preset value related to the indoor detection data and the second preset value are both greater than the first preset value, the preset value related to the indoor detection data is greater than or equal to the second preset value; or, the preset value related to the indoor detection data and the second preset value are both less than the first preset value, the preset value related to the indoor detection data is less than or equal to the second preset value.

[0156] The third determining module is configured to, for the second type of air quality index, take the second preset value as the relative air quality parameter corresponding to the air quality index if the outdoor air quality corresponding to the air quality index is better than the indoor air quality.

[0157] The second determining module 53 is specifically configured to, for the first type of air quality index, take the preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index if the outdoor air quality corresponding to the air quality index is better than the indoor air quality.

[0158] Optionally, the fresh air control device based on indoor and outdoor air quality further comprises a fourth determining module or a fifth determining module.

[0159] The fourth determining module is configured to, in a case where the preset value related to the indoor detection data is greater than the first preset value, for any air quality index, take a fourth preset value as the relative air quality parameter corresponding to the air quality index if the outdoor detection data belongs to a value range of severe pollution; the fourth preset value is less than the first preset value, and a difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times of a difference between the preset value related to the indoor detection data and the first preset value.

[0160] The fifth determining module is configured to, in a case where the preset value related to the indoor detection data is less than the first preset value, for any air quality index, take a fourth preset value as the relative air quality parameter corresponding to the air quality index if the outdoor detection data belongs to a value range of severe pollution; the fourth preset value is greater than the first preset value, and a difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times of a difference between the preset value related to the indoor detection data and the first preset value.

[0161] Optionally, the first obtaining module 51 comprises a third determining unit or a fourth determining unit.

[0162] The third determining unit is configured to, in a case that the lower the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, determine that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, determine that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

[0163] The fourth determining unit is configured to, in a case that the higher the value of the air quality index, the better the air quality, if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, determine that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, determine that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

[0164] In some embodiments, the fresh air control device based on indoor and outdoor air quality comprises a processor and a memory storing program instructions, and the processor is configured to execute the fresh air control method based on indoor and outdoor air quality provided by the foregoing embodiments when executing the program instructions.

[0165] Figure 6 Fig. 1 is a schematic diagram of a fresh air control device based on indoor and outdoor air quality provided by an embodiment of the present application. As shown in Fig. 1, the fresh air control device based on indoor and outdoor air quality comprises: Figure 6

[0166] A processor 61 and a memory 62, and can further comprise a communication interface 63 and a bus 64. The processor 61, the communication interface 63 and the memory 62 can complete mutual communication through the bus 64. The communication interface 63 can be used for information transmission. The processor 61 can invoke the logical instructions in the memory 62 to execute the fresh air control method based on indoor and outdoor air quality provided by the foregoing embodiments.

[0167] In addition, the logical instructions in the memory 62 described above can be implemented in the form of a software functional unit and sold or used as an independent product, which can be stored in a computer readable storage medium.

[0168] ​The memory 62 can be used to store software programs, computer executable programs, such as program instructions / modules corresponding to the method in the embodiments of the present application. The processor 61 executes the functions and data processing, i.e., implements the method in the above-mentioned method embodiments, by running the software programs, instructions and modules stored in the memory 62.

[0169] The memory 62 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal device, etc. In addition, the memory 62 can include a high-speed random access memory, and can also include a non-volatile memory.

[0170] The embodiments of the present application provide a fresh air conditioner, which comprises the fresh air control device based on indoor and outdoor air quality provided in the foregoing embodiments.

[0171] The embodiments of the present application provide a computer readable storage medium, which stores computer executable instructions, and the computer executable instructions are configured to execute the fresh air control method based on indoor and outdoor air quality provided in the foregoing embodiments.

[0172] The embodiments of the present application provide a computer program product, which comprises a computer program stored on a computer readable storage medium, and the computer program comprises program instructions, and when the program instructions are executed by a computer, the computer executes the fresh air control method based on indoor and outdoor air quality provided in the foregoing embodiments.

[0173] The computer readable storage medium described above can be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

[0174] The technical solutions of the embodiments of the present application can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes one or more instructions to make a computer device (which can be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method in the embodiments of the present application. The storage medium described above can be a non-transitory storage medium, including a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc. various media that can store program codes, or can be a transitory storage medium.

[0175] The above description and drawings are illustrative of embodiments of the application and are not to be construed as limiting the application. Other embodiments can include structural, logical, electrical, process, and other changes. The embodiments are merely examples of the many possible embodiments of the application. Unless explicitly stated otherwise, individual components and functions are optional and the order of operations can vary. Parts and features of some embodiments can be included or replaced with parts and features of other embodiments. Also, the word "comprising" and variations thereof, as used in the claims, mean "including but not limited to" and are not intended to exclude other moieties, constituents, steps, or elements. The term "consisting of" is intended to mean "including and limited to" such that the scope of embodiments only encompasses the elements recited. The term "consisting essentially of" is intended to mean "including at least the recited elements, and any additional elements that do not materially change the basic and novel characteristics of the claimed application." Other embodiments can be understood and effected by those skilled in the art in practicing the claims.

[0176] Those skilled in the art can understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of the present application. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0177] The disclosed method, product (including but not limited to device, equipment, etc.) in the embodiments disclosed in the present document can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units can be merely a logical function division. In actual implementation, another division manner can be used. For example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms. The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the embodiments. In addition, the functional units in the embodiments of the present application can be integrated in one processing unit, or each unit can be a physical unit, or two or more units can be integrated in one unit.

[0178] The flowcharts and block diagrams in the drawings show the possible implementation architecture, function and operation of the system, method and computer program product according to the embodiments of the present application. In this regard, each block in the flowchart or block diagram can represent a module, program segment or part of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions noted in the blocks can occur in different orders than those noted in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and sometimes in reverse order, depending on the functions involved. Each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system that performs the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

Claims

1. A fresh air control method based on indoor and outdoor air quality, characterized in that, The method comprises the following steps: obtaining a relationship between indoor air quality represented by indoor detection data and outdoor air quality represented by outdoor detection data corresponding to each air quality index; in the case that outdoor air quality corresponding to the air quality index is worse than indoor air quality, taking a first preset value as a relative air quality parameter corresponding to the air quality index; in the case that outdoor air quality corresponding to the air quality index is better than indoor air quality, taking a preset value related to indoor detection data as a relative air quality parameter corresponding to the air quality index; in the case that a weighted average / sum of relative air quality parameters corresponding to at least two air quality indexes indicates that outdoor overall air quality is better than indoor overall air quality, starting a fresh air device to ventilate indoor and outdoor air.

2. The fresh air control method according to claim 1, characterized in that, The method of taking a preset value related to indoor detection data as a relative air quality parameter corresponding to the air quality index comprises the following steps: obtaining a data range of the indoor detection data; if the indoor detection data is in a first data range, taking a second preset value as a relative air quality parameter corresponding to the air quality index, if the indoor detection data is in a second data range, taking a third preset value as a relative air quality parameter corresponding to the air quality index, indoor air quality represented by the second data range is worse than air quality represented by the first data range; or, if a difference between the indoor detection data and the outdoor detection data is in a first data range, taking a second preset value as a relative air quality parameter corresponding to the air quality index, if a difference between the indoor detection data and the outdoor detection data is in a second data range, taking a third preset value as a relative air quality parameter corresponding to the air quality index, a value of the first data range is smaller than a value of the second data range; the first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value; or, the first preset value is larger than the second preset value, and the second preset value is larger than the third preset value.

3. The fresh air control method according to claim 2, characterized in that, The set threshold value is determined according to an average of the first preset value and the second preset value.

4. The fresh air control method according to claim 2, wherein The method of determining the relationship between the outdoor overall air quality and the indoor overall air quality comprises the following steps: in the case that the first preset value is smaller than the second preset value, and the second preset value is smaller than the third preset value, if the weighted average / sum is greater than the set threshold value, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average / sum is smaller than or equal to the set threshold value, it is determined that the outdoor overall air quality is worse than the indoor overall air quality; in the case that the first preset value is larger than the second preset value, and the second preset value is larger than the third preset value, if the weighted average / sum is smaller than the set threshold value, it is determined that the outdoor overall air quality is better than the indoor overall air quality; if the weighted average / sum is greater than or equal to the set threshold value, it is determined that the outdoor overall air quality is worse than the indoor overall air quality.

5. The fresh air control method according to claim 1, wherein, a first type of air quality index and a second type of air quality index are obtained from the at least two air quality indexes; the first type of air quality index is an air quality index affected by user activities or an air quality index that poses a threat to the health status of the user; the second type of air quality index is an air quality index other than the first type of air quality index from the at least two air quality indexes; for the first type of air quality index, a preset value related to the indoor detection data is taken as a relative air quality parameter corresponding to the air quality index, in a case where outdoor air quality corresponding to the air quality index is better than indoor air quality; for the second type of air quality index, a second preset value is taken as a relative air quality parameter corresponding to the air quality index, in a case where outdoor air quality corresponding to the air quality index is better than indoor air quality; the preset value related to the indoor detection data and the second preset value are both greater than the first preset value, and the preset value related to the indoor detection data is greater than or equal to the second preset value; or, the preset value related to the indoor detection data and the second preset value are both less than the first preset value, and the preset value related to the indoor detection data is less than or equal to the second preset value.

6. The fresh air control method according to any one of claims 1 to 5, characterized in that, Further comprising: in a case where the preset value related to the indoor detection data is greater than the first preset value, for any air quality index, if the outdoor detection data belongs to a value range of severe pollution, a fourth preset value is taken as a relative air quality parameter corresponding to the air quality index; the fourth preset value is less than the first preset value, and a difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times a difference between the preset value related to the indoor detection data and the first preset value; in a case where the preset value related to the indoor detection data is less than the first preset value, for any air quality index, if the outdoor detection data belongs to a value range of severe pollution, a fourth preset value is taken as a relative air quality parameter corresponding to the air quality index; the fourth preset value is greater than the first preset value, and a difference between the preset value related to the indoor detection data and the fourth preset value is more than twenty times a difference between the preset value related to the indoor detection data and the first preset value.

7. The fresh air control method according to any one of claims 1 to 5, characterized by, an advantage or disadvantage relationship between indoor air quality represented by indoor detection data and outdoor air quality represented by outdoor detection data corresponding to each air quality index is obtained, comprising: in a case where a lower value of an air quality index represents better air quality, if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality; In the case that the higher the data of the air quality index is, the better the air quality is, if the outdoor detection data corresponding to the air quality index is greater than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is better than the indoor air quality; if the outdoor detection data corresponding to the air quality index is less than the indoor detection data, it is determined that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality.

8. A fresh air control device based on indoor and outdoor air quality, characterized by, The method comprises: a first obtaining module, configured to obtain the relationship between the indoor air quality represented by the indoor detection data corresponding to each air quality index and the outdoor air quality represented by the outdoor detection data; a first determining module, configured to, in the case that the outdoor air quality corresponding to the air quality index is worse than the indoor air quality, take a first preset value as the relative air quality parameter corresponding to the air quality index; a second determining module, configured to, in the case that the outdoor air quality corresponding to the air quality index is better than the indoor air quality, take a preset value related to the indoor detection data as the relative air quality parameter corresponding to the air quality index; a control module, configured to, in the case that the comparison result of the weighted average / weighted sum of the relative air quality parameters corresponding to at least two air quality indexes and the set threshold value indicates that the overall outdoor air quality is better than the overall indoor air quality, start the fresh air device to ventilate the indoor and outdoor.

9. A fresh air control device based on indoor and outdoor air quality, comprising a processor and a memory having stored program instructions, characterized in that, The processor is configured to execute the program instructions to perform the fresh air control method based on indoor and outdoor air quality according to any one of claims 1 to 7.

10. A fresh air conditioner characterized by comprising: The fresh air control device based on indoor and outdoor air quality according to claim 8 or 9. The processor is configured to execute the program instructions to perform the fresh air control method based on indoor and outdoor air quality according to any one of claims 1 to 7.

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