CN115523613A - Filter screen dust collection state detection method and device and air purification device - Google Patents

Abstract

The invention provides a method and a device for detecting the dust collecting state of a filter screen and an air purification device, and relates to the technical field of air purification, wherein the method comprises the following steps: acquiring a current air quality index and a current historical dust collection amount of a filter screen; calculating the real-time dust collection amount of the filter screen according to a preset particulate matter calibration value corresponding to the current air quality index and the running time; determining the current accumulated dust collection amount of the filter screen according to the historical dust collection amount and the real-time dust collection amount; judging whether the filter screen reaches corresponding N dust collection states or not according to the accumulated dust collection amount and N preset dust collection amount thresholds; prompting a user to replace or clean the filter screen when the filter screen reaches the ith dust collection state; assigning the accumulated dust collection amount to the historical dust collection amount, and clearing the historical dust collection amount after a user replaces or cleans the filter screen. The method can indicate the user before the filter screen reaches the service life according to the requirements of different users on the air quality, so that the user can replace or clean the filter screen in advance according to the requirements.

Description

Method and device for detecting dust collecting state of filter screen, and air purification device

technical field

The invention relates to the technical field of air purification, in particular to a method and device for detecting the dust collecting state of a filter screen and an air purification device.

Background technique

At present, the main function of air purification products such as air purifiers, air conditioners with purification functions, and fresh air fans on the market is to remove particulate matter (such as PM2.5) in the air. Most of these products use High Efficiency Particulate Filters (HEPA) Air Filter, HEPA, such as: non-woven filter) or electrostatic dust collection to intercept particulate matter. The two methods have their own advantages and disadvantages. HEPA has high air resistance and low cost. It is a consumable and needs to be replaced after a period of use. The electrostatic dust collection filter has low air resistance, but its cost is relatively high. It needs to be cleaned regularly and can be used permanently without replacement.

For the above-mentioned air purification products, an existing way to detect the life of the filter screen is to continuously calculate the current dust collection capacity of the filter screen (the quality of the adsorbed particles). When the calculated current accumulated dust collection volume of the filter screen reaches the When the dust holding capacity is low, it prompts to replace or deep clean the filter screen.

However, different users have different requirements for air quality. For some users who have high air quality requirements, such as those who are prone to respiratory infections, dust allergies, or have pregnant women, babies or children at home, they cannot wait until the filter reaches the required level. Replacement or deep cleaning status, because the purification effect of the filter screen is already very poor when it is close to the status of replacement or deep cleaning. For users who have high requirements on air quality, the existing method of detecting the life of the filter screen cannot remind the user before the filter screen reaches the service life, so that the user can replace or clean the filter screen in advance according to the demand.

Contents of the invention

The present invention provides a filter dust collection state detection method, device and air purification device, which are used to solve the air quality requirements of different users in the prior art, and it is impossible to prompt the user to replace or clean the filter before the filter reaches the service life network problem.

The present invention provides a method for detecting the dust collecting state of a filter screen, comprising:

Obtain the current air quality index and the current historical dust collection capacity of the filter;

Calculate the real-time dust collection capacity of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time;

Determine the current cumulative dust collection capacity of the filter according to the historical dust collection capacity and real-time dust collection capacity;

According to the accumulated dust collection volume and the preset N dust collection volume thresholds, it is judged whether the filter has reached the corresponding N dust collection states, and the N dust collection volume thresholds are set according to the dust holding capacity of the filter screen , N is an integer greater than 1, and the i-th dust collection threshold is less than the i+1 dust collection threshold;

When the filter screen reaches the i-th dust collection state, prompt the user to replace or clean the filter screen; when the filter screen reaches the N-th dust collection state, prompt the user to replace or clean the filter screen, where i=1,2 ,...,N-1;

The accumulated dust collection amount is assigned to the historical dust collection amount, and the historical dust collection amount is reset to zero after the user replaces or cleans the filter screen.

According to a method for detecting the dust collection state of a filter screen provided by the present invention, according to the accumulated dust collection amount and the preset N dust collection amount thresholds, it is judged whether the filter screen has reached the corresponding N dust collection states, including:

When the accumulated dust collection amount is greater than the i-th dust collection amount threshold and less than or equal to the i+1th dust collection amount threshold, it is determined that the filter screen has reached the i-th dust collection state;

If the accumulated dust collection amount is greater than the Nth dust collection amount threshold, it is determined that the filter screen has reached the Nth dust collection state.

According to a method for detecting the dust collection state of a filter screen provided by the present invention, when the filter screen reaches the i-th dust collection state, the user is prompted to replace or clean the filter screen, and when the filter screen reaches the N-th dust collection state, the user is prompted Users must replace or clean the filter, including:

When the filter reaches the i-th dust collection state, the i-th prompt method is used to prompt the user to replace or clean the filter screen; when the filter screen reaches the N-th dust-collection state, the N-th prompt method is used to prompt the user Replace or clean the filter.

According to a method for detecting the dust collecting state of a filter screen provided by the present invention, N=2 or 3.

According to a method for detecting the dust collection state of the filter screen provided by the present invention, when N=3, it is judged whether the filter screen has reached the corresponding N dust collection states, including:

When it is judged that the accumulated dust collection volume is greater than the first dust collection volume threshold and less than or equal to the second dust collection volume threshold, the filter reaches the first dust collection state;

Or, when it is judged that the accumulated dust collection amount is greater than the second dust collection amount threshold and less than or equal to the third dust collection amount threshold, the filter screen reaches the second dust collection state;

Or, when it is judged that the accumulated dust collection amount is greater than the third dust collection amount threshold, the filter screen reaches the third dust collection state,

The first dust collection threshold is smaller than the second dust collection threshold, and the second dust collection threshold is smaller than the third dust collection threshold.

According to a method for detecting the dust collection state of a filter screen provided by the present invention, when the filter screen reaches the i-th dust collection state, the user is prompted to replace or clean the filter screen, and when the filter screen reaches the N-th dust collection state, the user is prompted Users must replace or clean the filter, including:

When the filter screen reaches the first dust collection state, the user is reminded by a first reminder method, the first reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen , and displayed on the display screen of at least one of the corresponding product remote control and intelligent control terminal;

When the filter screen reaches the second dust collection state, the user is reminded by a second reminder method, the second reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen , Display on the display screen of at least one of the corresponding product remote control and intelligent control terminal, and make a prompt sound every time the product is started;

When the filter screen reaches the third dust collection state, the user is reminded by a third reminder method, the third reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen 1. The display screen corresponding to at least one of the remote control of the product and the intelligent control terminal flickers, and a prompt sound is issued each time the product is started, and the prompt sound is repeated at predetermined intervals.

The present invention also provides a filter dust collecting state detection device, comprising:

The information acquisition module is used to obtain the current air quality index and the current historical dust collection amount of the filter;

The real-time dust collection calculation module is used to calculate the real-time dust collection volume of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time;

The cumulative dust collection determination module is used to determine the current cumulative dust collection of the filter according to the historical dust collection and real-time dust collection;

The dust collection state judging module is used to judge whether the filter has reached the corresponding N dust collection states according to the accumulated dust collection amount and the preset N dust collection amount thresholds, and the N dust collection amount thresholds are based on The dust holding capacity of the filter is set, N is an integer greater than 1, and the i-th dust collection threshold is less than the i+1 dust collection threshold;

The user prompt module is used to prompt the user to replace or clean the filter screen when the filter screen reaches the i-th dust collection state, and to prompt the user to replace or clean the filter screen when the filter screen reaches the N-th dust collection state, wherein , i=1,2,...,N-1;

The historical dust collection update module is used to assign the accumulated dust collection to the historical dust collection, and reset the historical dust collection to zero after the user replaces or cleans the filter screen.

The present invention also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the filter described in any one of the above is realized. Dust collection state detection method.

The present invention also provides an air purification device, comprising: the above-mentioned electronic equipment.

The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method for detecting the dust collection state of the filter according to any one of the above-mentioned ones can be realized.

The filter screen dust collection state detection method, device and air purification device provided by the present invention obtain the current air quality index and the current historical dust collection amount of the filter screen; according to the preset particle calibration value corresponding to the current air quality index and operation Time to calculate the real-time dust collection capacity of the filter; determine the current cumulative dust collection capacity of the filter according to the historical dust collection capacity and real-time dust collection capacity; Whether the filter screen reaches the corresponding N dust collection states, the N dust collection volume thresholds are set according to the dust holding capacity of the filter screen, N is an integer greater than 1, and the i-th dust collection volume threshold is less than the i+1th Dust collection threshold; when the filter screen reaches the i-th dust collection state, the user is prompted to replace or clean the filter screen; when the filter screen reaches the N-th dust collection state, the user is prompted to replace or clean the filter screen, wherein, i=1,2,...,N-1. Since the cumulative dust collection capacity can reflect the filtering effect of the filter, that is, the larger the cumulative dust collection capacity, the worse the filtering effect of the filter screen. The current filtering effect of the filter screen can be judged by the current cumulative dust collection capacity and N thresholds of dust collection capacity. Therefore, according to the air quality requirements of different users, the user can be prompted when the filter screen reaches the dust collection state before the service life (the filter screen can hardly be filtered), so that the user can replace or clean the filter screen in advance according to their own needs.

Description of drawings

In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.

Fig. 1 is a schematic flow chart of the method for detecting the dust collecting state of the filter screen provided by the present invention;

Fig. 2 is a schematic structural view of a filter dust collection state detection device provided by the present invention;

Fig. 3 is a schematic structural diagram of an electronic device provided by the present invention.

detailed description

In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figure 1, the method for detecting the dust collecting state of the filter screen according to the embodiment of the present invention includes:

Step S110, obtaining the current air quality index (AQI) and the current historical dust collection capacity of the filter. In this step, because the dust collection capacity of the filter is affected by the quality of the outside air, when using the air purification device, although the doors and windows of the home are closed, it is not a sealed environment, and part of the outdoor air passing through the gaps between the doors and windows will still be connected to the indoor environment. The air is exchanged and circulated, and the indoor air is not produced out of thin air, and the indoor air comes from the outside. Regardless of whether the doors and windows are closed, the outdoor air quality will affect the indoor air quality. The higher the concentration of indoor particulate matter, the higher the real-time dust collection capacity, and vice versa, the lower the real-time dust collection capacity. The outdoor air quality index (AQI) of each region is updated in real time on the Internet every day, and the current air quality index can be obtained through network query. In this step, querying the current air quality index on the network is carried out in real time, that is, querying once at predetermined intervals (such as: 15 minutes), and updating the change of the air quality index in time, so as to calculate the dust collection amount more accurately. Wherein, the current historical dust collection amount of the filter screen is the accumulated dust collection amount of the filter screen after the air purification device was used last time.

Step S120, calculating the real-time dust collection capacity of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time. The real-time dust collection amount is the real-time dust collection amount during the operation of the air purification device, and the real-time dust collection amount m=x×t, where x is the calibration value of particulate matter corresponding to the current air quality index, see Table 1 and Table 1 for details As shown in 2, if the current air quality index is 125, that is, the light pollution category, then x=x ₃ =95.5, and t is the running time under the air quality index. If the air quality index changes during the time period when the air purification device is running, for example: the current AQI value is 80 when it is turned on, and the AQI value becomes 125 after t time, and then continues to run for t' time, then the real-time Dust collection m=x ₂ ×t+x ₃ ×t'.

Table 1 Correspondence between AQI values and particulate matter

AQI value AQI category Particulate matter (such as: PM2.5) 24-hour average / (micrograms / cubic meter) 0～50 excellent 0～35 51～100 good 36～75 101～150 light pollution 76～115 151～200 Moderately polluted 116～150 201～300 heavy pollution 151～250 >300 severe pollution >251

Table 2 Relationship between AQI value and particle calibration value

In Table 2 above, the particle calibration values x ₁ to x ₅ are the median of the corresponding concentration range of the particles, and x ₆ is the endpoint value. In order to obtain the particulate matter calibration value corresponding to the air quality index more accurately, the particulate matter calibration value corresponding to the air quality index has the following mapping relationship:

For the endpoint value of the air quality index range, the corresponding particle calibration value is the endpoint value of the corresponding particle concentration range, for example: in light pollution, the particle calibration value corresponding to the air quality index 101 in 101-150 is 76, the air quality The particulate matter calibration value corresponding to the index 150 is 115, and for example: the particulate matter calibration value corresponding to the air quality index 300 is 251. For the middle value of the air quality index range, the corresponding particle calibration value is obtained according to the following formula:

Among them, b is the current air quality index, b _min and b _max are the minimum and maximum endpoint values of the air quality index range where b is located, and a _min and a _max are the minimum and maximum particle concentration ranges corresponding to the air quality index range. The maximum endpoint value, x is the particle calibration value when the air quality index is b.

The particulate matter calibration value corresponding to the air quality index obtained according to the above mapping relationship will be more accurate when the accumulated dust collection amount is subsequently determined.

Step S130: Determine the current cumulative dust collection capacity of the filter according to the historical dust collection capacity and the real-time dust collection capacity, that is, the current cumulative dust collection capacity m _l =m _h +m, where m _h is the historical dust collection capacity. From the time when the filter is clean to the current moment, the current accumulative dust collection m _l can also be expressed by the following formula:

Among them, x _i is x ₁ ~ x ₆ in Table 2 above, and t _i is the cumulative running time under the AQI category corresponding to x _i .

Step S140, according to the accumulated dust collection volume and the preset N dust collection volume thresholds, determine whether the filter has reached the corresponding N dust collection states, and the N dust collection volume thresholds are based on the dust holding capacity of the filter screen amount setting, N is an integer greater than 1, and the i-th dust collection amount threshold is less than the i+1-th dust collection amount threshold. In order to remind the user of the current dust collection status of the filter before the filter reaches its service life, the current dust collection status of the filter is judged according to the current cumulative dust collection volume and the preset N dust collection volume thresholds. Of course, the Nth dust collection The Nth dust collection state corresponding to the amount threshold is the state where the filter screen has reached the end of its service life and must be replaced or cleaned.

Step S150, prompting the user to replace or clean the filter screen when the filter screen reaches the i-th dust collection state, and prompting the user to replace or clean the filter screen when the filter screen reaches the N-th dust collection state, wherein, i= 1,2,...,N-1. Specifically, the respective display screens of the air purifier, the air conditioner and the fresh air system can display prompt information or emit a prompt sound to remind the user, wherein the displayed prompt information can be a text message for replacing or cleaning the filter screen. It should be noted that: for the HEPA dust collection filter, replace it directly, and for the electrostatic dust collection filter, clean it.

Step S160, assigning the accumulated dust collection amount to the historical dust collection amount, and clearing the historical dust collection amount to zero after the user replaces or cleans the filter screen. Specifically, after the user replaces or cleans the filter screen, he can actively perform the reset operation of the accumulated dust collection amount, and reset the historical dust collection amount to zero after receiving an instruction for the reset operation.

In the method for detecting the dust collection state of the filter screen in this embodiment, since the accumulated dust collection amount can reflect the filtering effect of the filter screen, that is, the greater the accumulated dust collection amount, the worse the filtering effect of the filter screen. N thresholds of dust collection volume determine the current filtering effect of the filter. Therefore, according to the air quality requirements of different users, the user can be prompted when the filter reaches the dust collection state before the service life (the filter can hardly be filtered), so that the user Replace or clean the filter in advance according to your needs.

In this embodiment, step S140 includes: if the accumulated dust collection amount is greater than the i-th dust collection amount threshold and less than or equal to the (i+1)-th dust collection amount threshold, then determining that the filter has reached the i-th dust collection state ; In the case that the accumulated dust collection amount is greater than the Nth dust collection amount threshold, it is determined that the filter screen has reached the Nth dust collection state.

Correspondingly, step S150 includes: when the filter screen reaches the i-th dust collection state, prompting the user to replace or clean the filter screen in the i-th prompt mode; when the filter screen reaches the N-th dust collection state, The Nth prompt mode is used to remind the user that the filter screen must be replaced or cleaned. In the case of different dust collection states, different prompting methods are adopted, so that when the dust collection capacity of the filter screen is larger, a prompting method that is easier to attract the user's attention can be adopted.

Preferably, N=2 or 3, so as to avoid setting too many thresholds of dust collection amount and causing frequent prompts.

Specifically, when N=3, step S140 includes:

When it is judged that the accumulated dust collection amount is greater than the first dust collection amount threshold and less than or equal to the second dust collection amount threshold, the filter screen reaches the first dust collection state.

Alternatively, when it is judged that the accumulated dust collection amount is greater than the second dust collection amount threshold and less than or equal to the third dust collection amount threshold, the filter screen reaches the second dust collection state.

Alternatively, when it is judged that the accumulated dust collection amount is greater than the third dust collection amount threshold, the filter screen reaches the third dust collection state.

The first dust collection threshold is smaller than the second dust collection threshold, and the second dust collection threshold is smaller than the third dust collection threshold.

Among them, the third dust collection state corresponds to the dust collection state that must be replaced or deeply cleaned, that is, when the accumulated dust collection volume is greater than the third dust collection volume threshold, the filter must be replaced or cleaned, which is applicable to all users and must be replaced or deep cleaned. The dust collection state of cleaning can be understood as a minimum standard state, therefore, the third dust collection volume threshold is set at 1.5 times the dust capacity of the filter screen (usually when the clean air output ratio CADR of air purification products drops to 50%, it is considered The filter screen reaches the dust holding capacity, in fact, the filter screen still has a certain filtering capacity). The first dust collection state corresponds to the dust collection state that can be replaced or lightly cleaned, and the second dust collection state corresponds to the dust collection state that can be replaced or moderately cleaned. It is not necessary to replace or clean the filter in these two dust collection states, so , the first dust collection threshold and the second dust collection threshold can not only be set when the product leaves the factory, but also the dust collection setting value input by the user can be received as the first dust collection threshold and the second dust collection threshold , users can make their own settings according to their own needs, especially for some smart air purifiers, smart air conditioners and smart fresh air systems, users can set them through the APP in the corresponding smart terminal. For example: the first dust collection threshold is set at 60% to 70% of the filter's dust holding capacity, and the second dust collection threshold is set at the filter's dust holding capacity.

For N=3, step S150 includes:

When the filter screen reaches the first dust collection state, the user is reminded by a first reminder method, which is: sending a reminder message that the filter screen can be replaced or cleaned to the corresponding filter screen. It is displayed on the display screen of at least one of the product, the corresponding product remote control and the intelligent control terminal. The displayed prompt information can be a text message that the filter screen can be replaced or lightly cleaned. In the first reminder mode, some users with high air quality requirements may replace or clean the filter screen, and other users can ignore the prompt.

When the filter screen reaches the second dust collection state, the user is reminded by a second reminder method, the second reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen , corresponding to the display screen of at least one of the product remote control and intelligent control terminal, and a prompt sound will be issued each time the product is started. The displayed prompt information can be a text message that the filter screen can be replaced or moderately cleaned. In the second reminder mode, some users who have higher requirements on air quality may replace or clean the filter screen, and other users can ignore the prompt.

When the filter screen reaches the third dust collection state, the user is reminded by a third reminder method, the third reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen 1. The display screen corresponding to at least one of the remote control of the product and the intelligent control terminal flickers, and a prompt sound is issued each time the product is started, and the prompt sound is repeated at predetermined intervals. The prompt information displayed can be a text message that the filter must be replaced or deeply cleaned. In the third reminder mode, the user is reminded to replace or clean the filter, and a prompt sound is issued each time the product is started, and the preset time interval is repeated. The above-mentioned beep will be heard until the filter is replaced or cleaned.

In this embodiment, in addition to setting the i-th dust collection volume threshold value when the product leaves the factory, it also includes: receiving the dust collection volume set value input by the user as the i-th dust collection volume threshold value, so that the user can set the dust collection volume threshold value according to his own needs. Set it yourself. Especially for some smart air purifiers, smart air conditioners and smart fresh air systems, users can set them according to their own needs through the APP in the corresponding smart terminal. When the air purification product leaves the factory, the i-th dust collection volume threshold has been preset. When the user receives the i-th dust collection volume threshold set by the user during use, the preset i-th dust collection volume will be replaced. threshold.

The device for detecting the dust collection state of the filter screen provided by the present invention is described below, and the device for detecting the dust collection state of the filter screen described below and the method for detecting the dust collection state of the filter screen described above can be referred to in correspondence.

The present invention also provides a filter dust collection state detection device, as shown in Figure 2, comprising:

The information obtaining module 210 is used to obtain the current air quality index and the current historical dust collection amount of the filter screen.

The real-time dust collection calculation module 220 is configured to calculate the real-time dust collection volume of the filter screen according to the preset particle calibration value corresponding to the current air quality index and the running time.

The accumulative dust collection amount determination module 230 is configured to determine the current accumulated dust collection amount of the filter according to the historical dust collection amount and the real-time dust collection amount.

The dust collection state judging module 240 is used to judge whether the filter has reached the corresponding N dust collection states according to the accumulated dust collection amount and the preset N dust collection amount thresholds, and the N dust collection amount thresholds According to the setting of the dust holding capacity of the filter screen, N is an integer greater than 1, and the i-th dust collection threshold is smaller than the i+1th dust collection threshold.

The user prompt module 250 is used to prompt the user to replace or clean the filter screen when the filter screen reaches the i-th dust collection state, and prompt the user to replace or clean the filter screen when the filter screen reaches the N-th dust collection state, Wherein, i=1, 2, . . . , N-1.

The historical dust collection update module 260 is configured to assign the accumulated dust collection to the historical dust collection, and clear the historical dust collection to zero after the user replaces or cleans the filter screen.

The filter dust collecting state detecting device of the present embodiment can reflect the filtering effect of the filter screen due to the accumulated dust collection amount, that is, the larger the accumulated dust collection amount, the worse the filtering effect of the filter screen, and the current accumulated dust collection amount and N Therefore, according to the air quality requirements of different users, the user can be prompted when the filter is in the dust collection state before the service life (the filter can hardly be filtered), so that the user can press You need to replace or clean the filter in advance.

Optionally, the dust collection state judging module 240 is specifically used for:

In a case where the accumulated dust collection amount is greater than the i-th dust collection amount threshold and less than or equal to the i+1th dust collection amount threshold, it is determined that the filter has reached the i-th dust collection state.

If the accumulated dust collection amount is greater than the Nth dust collection amount threshold, it is determined that the filter screen has reached the Nth dust collection state.

Optionally, the user prompting module 250 is specifically used to prompt the user to replace or clean the filter screen in the i-th prompt mode when the filter screen reaches the i-th dust collection state; when the filter screen reaches the N-th dust collection state In the case of , the Nth prompt method is used to prompt the user to replace or clean the filter screen.

Optionally, N=2 or 3.

Optionally, when N=3, the dust collection state judging module 240 is specifically used for:

When it is judged that the accumulated dust collection amount is greater than the first dust collection amount threshold and less than or equal to the second dust collection amount threshold, the filter screen reaches the first dust collection state.

Alternatively, when it is judged that the accumulated dust collection amount is greater than the second dust collection amount threshold and less than or equal to the third dust collection amount threshold, the filter screen reaches the second dust collection state.

Alternatively, when it is judged that the accumulated dust collection amount is greater than the third dust collection amount threshold, the filter screen reaches the third dust collection state.

The first dust collection threshold is smaller than the second dust collection threshold, and the second dust collection threshold is smaller than the third dust collection threshold.

Optionally, when N=3, the user prompt module 250 is specifically used to:

When the filter screen reaches the first dust collection state, the user is reminded by a first reminder method, the first reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen , corresponding to the display screen of at least one of the product remote control and intelligent control terminal.

When the filter screen reaches the second dust collection state, the user is reminded by a second reminder method, the second reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen , corresponding to the display screen of at least one of the product remote control and intelligent control terminal, and a prompt sound will be issued each time the product is started.

When the filter screen reaches the third dust collection state, the user is reminded by a third reminder method, the third reminder method is: sending a reminder message for replacing or cleaning the filter screen to the corresponding product of the filter screen 1. The display screen corresponding to at least one of the remote control of the product and the intelligent control terminal flickers, and a prompt sound is issued each time the product is started, and the prompt sound is repeated at predetermined intervals.

FIG. 3 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 3 , the electronic device may include: a processor (processor) 310, a communication interface (Communications Interface) 320, a memory (memory) 330 and a communication bus 340, Wherein, the processor 310 , the communication interface 320 , and the memory 330 communicate with each other through the communication bus 340 . The processor 310 can call the logic instructions in the memory 330 to execute the method for detecting the dust collection state of the filter, the method comprising:

Obtain the current air quality index and the current historical dust collection capacity of the filter.

Calculate the real-time dust collection capacity of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time.

The current accumulated dust collection capacity of the filter is determined according to the historical dust collection capacity and the real-time dust collection capacity.

According to the accumulated dust collection volume and the preset N dust collection volume thresholds, it is judged whether the filter has reached the corresponding N dust collection states, and the N dust collection volume thresholds are set according to the dust holding capacity of the filter screen , N is an integer greater than 1, and the i-th dust collection threshold is smaller than the i+1 dust collection threshold.

When the filter screen reaches the i-th dust collection state, prompt the user to replace or clean the filter screen; when the filter screen reaches the N-th dust collection state, prompt the user to replace or clean the filter screen, where i=1,2 ,...,N-1.

The accumulated dust collection amount is assigned to the historical dust collection amount, and the historical dust collection amount is reset to zero after the user replaces or cleans the filter screen.

In addition, the above-mentioned logic instructions in the memory 330 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. .

The present invention also provides an air purification device, including: the above-mentioned electronic equipment, and the electronic equipment obtains the current air quality index from the Internet in real time through the communication interface 320 .

The air purification device can be an air purifier, an air conditioner with air purification function and a fresh air system, and the electronic equipment can be understood as the main controller or main control circuit board in the air purifier, air conditioner with air purification function and fresh air system .

On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program that can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can Execute the method for detecting the dust collection state of the filter screen provided by the above methods, the method includes:

Obtain the current air quality index and the current historical dust collection capacity of the filter.

Calculate the real-time dust collection capacity of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time.

The current accumulated dust collection capacity of the filter is determined according to the historical dust collection capacity and the real-time dust collection capacity.

According to the accumulated dust collection volume and the preset N dust collection volume thresholds, it is judged whether the filter has reached the corresponding N dust collection states, and the N dust collection volume thresholds are set according to the dust holding capacity of the filter screen , N is an integer greater than 1, and the i-th dust collection threshold is smaller than the i+1 dust collection threshold.

When the filter screen reaches the i-th dust collection state, prompt the user to replace or clean the filter screen; when the filter screen reaches the N-th dust collection state, prompt the user to replace or clean the filter screen, where i=1,2 ,...,N-1.

The accumulated dust collection amount is assigned to the historical dust collection amount, and the historical dust collection amount is reset to zero after the user replaces or cleans the filter screen.

In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the method for detecting the dust collection state of the filter provided by the above methods, The method includes:

Obtain the current air quality index and the current historical dust collection capacity of the filter.

Calculate the real-time dust collection capacity of the filter according to the preset particle calibration value corresponding to the current air quality index and the running time.

The current accumulated dust collection capacity of the filter is determined according to the historical dust collection capacity and the real-time dust collection capacity.

According to the accumulated dust collection volume and the preset N dust collection volume thresholds, it is judged whether the filter has reached the corresponding N dust collection states, and the N dust collection volume thresholds are set according to the dust holding capacity of the filter screen , N is an integer greater than 1, and the i-th dust collection threshold is smaller than the i+1 dust collection threshold.

When the filter screen reaches the i-th dust collection state, prompt the user to replace or clean the filter screen; when the filter screen reaches the N-th dust collection state, prompt the user to replace or clean the filter screen, where i=1,2 ,...,N-1.

The accumulated dust collection amount is assigned to the historical dust collection amount, and the historical dust collection amount is reset to zero after the user replaces or cleans the filter screen.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A method for detecting the dust collecting state of a filter screen is characterized by comprising the following steps:

acquiring a current air quality index and a current historical dust collection amount of a filter screen;

calculating the real-time dust collection amount of the filter screen according to a preset particulate matter calibration value corresponding to the current air quality index and the running time;

determining the current accumulated dust collection amount of the filter screen according to the historical dust collection amount and the real-time dust collection amount;

judging whether the filter screen reaches corresponding N dust collection states or not according to the accumulated dust collection amount and N preset dust collection amount thresholds, wherein the N dust collection amount thresholds are set according to the dust containing amount of the filter screen, N is an integer larger than 1, and the ith dust collection amount threshold is smaller than the (i + 1) th dust collection amount threshold;

prompting a user to replace or clean the filter screen when the filter screen reaches the ith dust collection state, and prompting the user to replace or clean the filter screen when the filter screen reaches the Nth dust collection state, wherein i =1,2, …, N-1;

assigning the accumulated dust collection amount to the historical dust collection amount, and clearing the historical dust collection amount after a user replaces or cleans a filter screen.

2. The method for detecting the dust collecting state of the filter screen according to claim 1, wherein the step of determining whether the filter screen reaches the corresponding N dust collecting states according to the accumulated dust collecting amount and N preset dust collecting amount thresholds comprises:

determining that the filter screen reaches an ith dust collection state when the accumulated dust collection amount is larger than an ith dust collection amount threshold and is smaller than or equal to an (i + 1) th dust collection amount threshold;

and determining that the filter screen reaches an Nth dust collection state under the condition that the accumulated dust collection amount is larger than an Nth dust collection amount threshold value.

3. The method for detecting the dust collecting state of a filter screen according to claim 1, wherein the step of prompting a user to replace or clean the filter screen when the filter screen reaches the ith dust collecting state, and the step of prompting the user that the filter screen must be replaced or cleaned when the filter screen reaches the nth dust collecting state comprises the steps of:

when the filter screen reaches the ith dust collection state, prompting a user to replace or clean the filter screen by adopting an ith prompting mode; and under the condition that the filter screen reaches the Nth dust collection state, an Nth prompt mode is adopted to prompt a user to replace or clean the filter screen.

4. The method for detecting the dust collection state of a filter screen according to claim 1, wherein N =2 or 3.

5. The method for detecting the dust collecting state of the filter screen according to claim 1, wherein when N =3, the determining whether the filter screen reaches the corresponding N dust collecting states according to the accumulated dust collecting amount and N preset dust collecting amount thresholds includes:

judging that the accumulated dust collection amount is greater than a first dust collection amount threshold and less than or equal to a second dust collection amount threshold, and enabling the filter screen to reach a first dust collection state;

or, the filter screen reaches a second dust collection state when the accumulated dust collection amount is judged to be greater than a second dust collection amount threshold value and less than or equal to a third dust collection amount threshold value;

or, the filter screen reaches a third dust collecting state when the accumulated dust collecting amount is judged to be larger than a third dust collecting amount threshold value,

the first dust collection amount threshold is smaller than a second dust collection amount threshold, which is smaller than a third dust collection amount threshold.

6. The method for detecting the dust collecting state of the filter screen according to claim 5, wherein the step of prompting a user to replace or clean the filter screen when the filter screen reaches the ith dust collecting state, and the step of prompting the user that the filter screen must be replaced or cleaned when the filter screen reaches the nth dust collecting state comprises:

the filter screen reaches under the condition of first collection dirt state, adopt first warning mode suggestion user, first warning mode is: sending prompt information for replacing or cleaning the filter screen to a display screen of at least one of a product corresponding to the filter screen, a remote controller of the corresponding product and an intelligent control terminal for displaying;

the filter screen reaches under the condition of second collection dirt state, adopt the second to remind the mode and remind the user, the second reminds the mode and is: sending prompt information for replacing or cleaning the filter screen to a display screen of at least one of a product corresponding to the filter screen, a remote controller of the corresponding product and an intelligent control terminal for displaying, and sending out prompt sound when the product is started each time;

the filter screen reaches under the condition of third collection dirt state, adopt the third to remind the mode suggestion user, the third reminds the mode to be: the prompt information of replacing or cleaning the filter screen is sent to the display screen of at least one of the product corresponding to the filter screen, the product remote controller corresponding to the filter screen and the intelligent control terminal, the flicker display is carried out, a prompt sound is sent out when the product is started every time, and the prompt sound is repeated at intervals of preset duration.

7. The utility model provides a filter screen collection dirt state detection device which characterized in that includes:

the information acquisition module is used for acquiring the current air quality index and the current historical dust collection amount of the filter screen;

the real-time dust collection amount calculation module is used for calculating the real-time dust collection amount of the filter screen according to the preset particulate matter calibration value corresponding to the current air quality index and the running time;

the accumulated dust collecting amount determining module is used for determining the current accumulated dust collecting amount of the filter screen according to the historical dust collecting amount and the real-time dust collecting amount;

the dust collection state judgment module is used for judging whether the filter screen reaches corresponding N dust collection states according to the accumulated dust collection amount and N preset dust collection amount thresholds, wherein the N dust collection amount thresholds are set according to the dust containing amount of the filter screen, N is an integer larger than 1, and the ith dust collection amount threshold is smaller than the (i + 1) th dust collection amount threshold;

the user prompting module is used for prompting a user to replace or clean the filter screen when the filter screen reaches the ith dust collection state, and prompting the user to replace or clean the filter screen when the filter screen reaches the Nth dust collection state, wherein i =1,2, … and N-1;

and the historical dust collection amount updating module is used for assigning the accumulated dust collection amount to the historical dust collection amount and clearing the historical dust collection amount after a user replaces or cleans the filter screen.

8. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method of detecting the filter screen dust collecting state according to any one of claims 1 to 6.

9. An air purification apparatus, comprising: the electronic device of claim 8.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the filter screen dust collection state detection method according to any one of claims 1 to 6.

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