CN108088030A - Method and device for detecting filth blockage of air conditioner filter screen - Google Patents
Method and device for detecting filth blockage of air conditioner filter screen Download PDFInfo
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- 230000008859 change Effects 0.000 claims abstract description 50
- 238000004378 air conditioning Methods 0.000 claims description 42
- 238000001514 detection method Methods 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 20
- 238000012545 processing Methods 0.000 claims description 15
- 238000005516 engineering process Methods 0.000 abstract description 4
- 206010070834 Sensitisation Diseases 0.000 abstract 3
- 230000008313 sensitization Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
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Abstract
The invention discloses a method and a device for detecting filth blockage of an air conditioner filter screen. Wherein, the method comprises the following steps: receiving a light sensing index value detected by a light sensor within a preset time period; acquiring a sensitization change rate corresponding to the preset time period according to the sensitization index value; and if the sensitization change rate is larger than or equal to a first preset threshold value, outputting an alarm signal for indicating filth blockage of the filter screen. The invention solves the technical problem that the filth blockage of the filter screen cannot be accurately detected due to the fact that the filth blockage of the filter screen is detected through the power of the motor in the related technology.
Description
Technical field
The present invention relates to detection of air-conditioning field, in particular to a kind of dirty stifled detection method of air-conditioning filter net and dress
It puts.
Background technology
Air-conditioning in the long-term use, if not cleaning can have that filter screen dust stratification is dirty stifled for a long time, can be led
Intake is caused to greatly reduce, in some instances it may even be possible to can all be blocked.Filter screen dirtying, which blocks up directly affecting of bringing and is reduction of complete machine, to be changed
The heat exchange amount of hot device, it is that dust gathers easy endophytic bacteria and virus to influence indirectly, influences the usage experience and comfort of user.
Existing air-conditioning is not used filter screen dirtying and blocks up detection function or have substantially detects filter screen dirtying by power of motor
It is stifled.However, in air-conditioning actual moving process, except it is dirty it is stifled power of motor can be caused to change, power of motor also suffers from
The influence of the other parameters such as operation of air conditioner carrying capacity of environment, secondary refrigerant leakage amount, power network fluctuation causes complete machine still can not accurately detect and sentences
Disconnected filter screen dirtying blocks up.
For it is above-mentioned the problem of, currently no effective solution has been proposed.
The content of the invention
An embodiment of the present invention provides a kind of dirty stifled detection method and device of air-conditioning filter net, at least to solve due to phase
Pass technology, which is detected by power of motor caused by filter screen dirtying blocks up, can not accurately detect the technical issues of filter screen dirtying is stifled.
One side according to embodiments of the present invention provides a kind of dirty stifled detection method of air-conditioning filter net, including：It connects
Receive the photosensitive exponential quantity that photosensitive sensor detects in preset time period；According to the photosensitive exponential quantity, obtain described default
Period corresponding photosensitive change rate；If the photosensitive change rate is more than or equal to the first predetermined threshold value, output is used to indicate filtering
Net dirty stifled alarm signal.
Optionally, described according to the photosensitive exponential quantity, obtaining the corresponding photosensitive change rate of the preset time period includes：
According to the photosensitive exponential quantity, the corresponding photosensitive average value of the preset time period is obtained；According to the history photosensitive value of storage and
The photosensitive average value calculates the photosensitive change rate.
Optionally, the history photosensitive value according to storage and the photosensitive average value calculate the photosensitive change rate bag
It includes：Pass through formula (Ht-Ht-1)/(Ht-1-Ht-2), the photosensitive change rate is obtained, wherein, HtRepresent that t-th of period is corresponding
Photosensitive average value, the history photosensitive value include Ht-1And Ht-2。
Optionally, according to the photosensitive exponential quantity, after drawing the corresponding photosensitive average value of the preset time period, institute
The method of stating further includes：Whether the run time for detecting air-conditioning is more than or equal to scheduled duration；It is more than in the run time of the air-conditioning
In the case of equal to the scheduled duration, judge whether the photosensitive average value is less than or equal to the second predetermined threshold value；If the sense
Light average value is less than or equal to second predetermined threshold value, and output is used to indicate the alarm signal that filter screen dirtying blocks up.
Optionally, after output is used to indicate the alarm signal that filter screen dirtying blocks up, the method further includes：It is receiving
In the case of zeros data instruction input by user, by stored zeros data.
Optionally, after output is used to indicate the alarm signal that filter screen dirtying blocks up, the method further includes：Obtain storage
Air-conditioning start runs corresponding initial photosensitive value for the first time；If the photosensitive average value is more than the initial photosensitive value, will
The zeros data of storage.
Another aspect according to embodiments of the present invention additionally provides a kind of dirty stifled detection device of air-conditioning filter net, including：
Receiving unit, for receiving the photosensitive exponential quantity that photosensitive sensor detects in preset time period；Processing unit, for basis
The photosensitive exponential quantity obtains the corresponding photosensitive change rate of the preset time period；Output unit, if for the photosensitive variation
Rate is more than or equal to the first predetermined threshold value, and output is used to indicate the alarm signal that filter screen dirtying blocks up.
Optionally, the processing unit is for performing following steps according to the photosensitive exponential quantity, when obtaining described default
Between the corresponding photosensitive change rate of section：According to the photosensitive exponential quantity, the corresponding photosensitive average value of the preset time period is obtained；Root
History photosensitive value and the photosensitive average value according to storage calculate the photosensitive change rate.
Optionally, the processing unit is used to performing following steps according to the history photosensitive value of storage and described photosensitive average
Value calculates the photosensitive change rate：Pass through formula (Ht-Ht-1)/(Ht-1-Ht-2), the photosensitive change rate is obtained, wherein, HtTable
Show t-th of period corresponding photosensitive average value, the history photosensitive value includes Ht-1And Ht-2。
Optionally, whether the processing unit, the run time for being additionally operable to detection air-conditioning are more than or equal to scheduled duration；Institute
State air-conditioning run time be more than or equal to the scheduled duration in the case of, judge the photosensitive average value whether less than or equal to the
Two predetermined threshold values；The output unit, if being additionally operable to the photosensitive average value less than or equal to second predetermined threshold value, output is used
In the alarm signal that instruction filter screen dirtying blocks up.
In embodiments of the present invention, the photosensitive exponential quantity detected using photosensitive sensor is received in preset time period；
According to photosensitive exponential quantity, the corresponding photosensitive change rate of preset time period is obtained；If photosensitive change rate is more than or equal to the first default threshold
Value, output are used to indicate the mode for the alarm signal that filter screen dirtying blocks up, pass through the photosensitive index detected based on photosensitive sensor
Value is filtered the dirty stifled detection of net, when the condition is satisfied output alarm signal, user is reminded to clean filter screen, having reached need not
The purpose that power of motor detection filter screen dirtying blocks up, it is achieved thereby that the technique effect for the accuracy that detection filter screen dirtying blocks up is improved,
And then it solves and can not accurately detect filter screen dirtying since correlation technique is detected by power of motor caused by filter screen dirtying blocks up and block up
The technical issues of.
Description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description does not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow signal of optional dirty stifled detection method of air-conditioning filter net according to embodiments of the present invention
Figure；
Fig. 2 is a kind of optional photosensitive exponential quantity time history plot according to embodiments of the present invention；
Fig. 3 is a kind of optional photosensitive change rate time history plot according to embodiments of the present invention；
Fig. 4 is the flow signal of the dirty stifled detection method of the optional air-conditioning filter net of another kind according to embodiments of the present invention
Figure；
Fig. 5 is a kind of structural representation of optional dirty stifled detection device of air-conditioning filter net according to embodiments of the present invention
Figure.
Specific embodiment
In order to which those skilled in the art is made to more fully understand the present invention program, below in conjunction in the embodiment of the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work should all belong to the model that the present invention protects
It encloses.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be the object for distinguishing similar, without being used to describe specific order or precedence.It should be appreciated that it so uses
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, provide a kind of embodiment of the method for the dirty stifled detection method of air-conditioning filter net, it is necessary to
Illustrate, step shown in the flowchart of the accompanying drawings can be in the computer system of such as a group of computer-executable instructions
It performs, although also, show logical order in flow charts, it in some cases, can be to be different from herein suitable
Sequence performs shown or described step.
Fig. 1 is the dirty stifled detection method of air-conditioning filter net according to embodiments of the present invention, as shown in Figure 1, this method includes
Following steps：
Step S102 receives the photosensitive exponential quantity that photosensitive sensor detects in preset time period.
Wherein, complete machine is provided with the photosensitive sensor being placed below filter screen.In operation of air conditioner, photosensitive sensor detection
Photosensitive exponential quantity.
In the present embodiment, preset time period can refer to the operation of air conditioner Δ T time section of the t days.
Step S104 according to photosensitive exponential quantity, obtains the corresponding photosensitive change rate of preset time period.
Wherein, according to photosensitive exponential quantity, obtaining the corresponding photosensitive change rate of preset time period includes：According to photosensitive index
Value, obtains the corresponding photosensitive average value of preset time period；According to the history photosensitive value of storage and photosensitive average value, photosensitive change is calculated
Rate.
Optionally, according to the history photosensitive value of storage and photosensitive average value, calculating photosensitive change rate includes：Pass through formula
(Ht-Ht-1)/(Ht-1-Ht-2), photosensitive change rate is obtained, wherein, HtRepresent t-th of period corresponding photosensitive average value, history
Photosensitive value includes Ht-1And Ht-2。
Wherein, Ht-1Represent the t-1 period corresponding photosensitive average value, Ht-2Represent that the t-2 period is corresponding
Photosensitive average value.
For example, it is illustrated in units of day, HtIt can refer to the corresponding photosensitive average value of Δ T time section of the t days,
Ht-1It can refer to the corresponding photosensitive average value of Δ T time section of the t-1 days, Ht-2It can refer to that the Δ T time section of the t-2 days is right
The photosensitive average value answered.
Optionally, according to photosensitive exponential quantity, after drawing the corresponding photosensitive average value of preset time period, method is also wrapped
It includes：Whether the run time for detecting air-conditioning is more than or equal to scheduled duration；It is more than or equal to scheduled duration in the run time of air-conditioning
In the case of, judge whether photosensitive average value is less than or equal to the second predetermined threshold value；If photosensitive average value is less than or equal to the second default threshold
Value, output are used to indicate the alarm signal that filter screen dirtying blocks up.
For example, scheduled duration is 200 days, in the case that the run time of air-conditioning is more than or equal to 200 days, the present embodiment
The dirty stifled detection method of air-conditioning filter net can also directly judge photosensitive average value, be less than or equal to second in photosensitive average value
Predetermined threshold value, directly output are used to indicate the alarm signal that filter screen dirtying blocks up.
Step S106, if photosensitive change rate is more than or equal to the first predetermined threshold value, output is used to indicate the report that filter screen dirtying blocks up
Alert signal.
As shown in Fig. 2, since filter screen dirtying blocks up, increase that photosensitive exponential quantity that photosensitive sensor detects can be at any time and
Reduce, and as shown in figure 3, abscissa represents run time, ordinate represents the photosensitive change rate δ H=(H of detectiont-Ht-1)/
(Ht-1-Ht-2), as the time gradually increases, photosensitive change rate is in the trend of first increases and then decreases,.So, based on photosensitive index
Value and photosensitive change rate, it is possible to detect the situation that filter screen dirtying blocks up.
Optionally, after output is used to indicate the alarm signal that filter screen dirtying blocks up, method further includes：Receiving user
In the case of the zeros data instruction of input, by stored zeros data.The alarm that filter screen dirtying blocks up is used to indicate in output
After signal, method further includes：Obtain the corresponding initial photosensitive value of air-conditioning start operation for the first time of storage；If photosensitive average value
More than or equal to initial photosensitive value, by stored zeros data.
Wherein, initial photosensitive value can refer to after air-conditioning start operation for the first time, in day time, detect Δ for the first time
Photosensitive exponential quantity in T time section, the average value Н drawn0。
That is, after user-selected number is according to clear " 0 ", stored zeros data and program are restarted to detect；
If alternatively, photosensitive average value and detection data H for the first time that photosensitive sensor detects0(that is, initial photosensitive value) compares, if sense
Light average value is more than or equal to initial photosensitive value, and program then selects data clear " 0 ", i.e. restarts stored zeros data
Detection.
By above-mentioned steps, the dirty stifled detection of net is filtered based on the photosensitive exponential quantity that photosensitive sensor detects, when
Output alarm signal when meeting condition reminds user to clean filter screen, has reached what is blocked up without power of motor detection filter screen dirtying
Purpose it is achieved thereby that improving the technique effect for the accuracy that detection filter screen dirtying blocks up, and then is solved since correlation technique is led to
The technical issues of filter screen dirtying is stifled can not accurately be detected by crossing caused by power of motor detection filter screen dirtying blocks up.
In the following, stifled detection method dirty to the air-conditioning filter net of the present embodiment illustrates, this method includes：
Step a, the air-conditioning detection of start operation for the first time H0。
Wherein, H0(that is, initial photosensitive value) refers to after air-conditioning start operation for the first time, in day time, examines for the first time
Survey the photosensitive exponential quantity in Δ T time section, the average value drawn.
Step b, detection run time the t days and the N days corresponding Hn.
Wherein, continuous operation N days, the corresponding Н of Δ Tn times during record each runn。
Step c judges whether to meet 0 ＜ t ＜ N days and whether meets photosensitive change rate >=δ H.
Wherein, the first predetermined threshold value of δ H, that is, above-mentioned.If so, performing step e, step d is performed if not.
That is, air-conditioning is continuously run in 0 ＜ t ＜ N days times, if detecting the t days, photosensitive sensor detects photosensitive
When exponential quantity meets photosensitive change rate >=δ H, then the dirty stifled alarm signal of output filtering net, wherein, N is above-mentioned pre- timing
It is long.
Step d judges whether to meet t >=N days and whether meets photosensitive change rate >=δ H or to meet photosensitive average value small
In equal to default photosensitive index threshold.
If so, step e is performed, if it is not, normal operation.
That is, after air-conditioning continuously runs t >=N days time, obtained photosensitive change rate >=δ H are detected daily and (are set pre-
Alert parameter value) or meet photosensitive average value and be less than or equal to after presetting photosensitive index threshold, the dirty stifled alarm signal of output filtering net.
Step e, output alarm signal.
Wherein, alarm signal is used to indicate filter screen dirtying and blocks up, and user is reminded to clean filter screen in time.
Step f, data are clear " 0 ".
Wherein, after user-selected number is according to clear " 0 ", stored zeros data and program are restarted to detect；Alternatively,
If the photosensitive average value that photosensitive sensor detects and detection data Н for the first time0(that is, initial photosensitive value) compares, if photosensitive flat
Average is more than or equal to initial photosensitive value, and program then selects data clear " 0 ", i.e. restarts to detect by stored zeros data.
Embodiment 2
According to embodiments of the present invention, a kind of embodiment of the dirty stifled detection device of air-conditioning filter net is provided, Fig. 5 is basis
The fault detection circuit of the embodiment of the present invention, as shown in figure 5, the dirty stifled detection device of the air-conditioning filter net includes：Receiving unit
50, for receiving the photosensitive exponential quantity that photosensitive sensor detects in preset time period；Processing unit 52, for according to photosensitive
Exponential quantity obtains the corresponding photosensitive change rate of preset time period；Output unit 54, if being more than or equal to first for photosensitive change rate
Predetermined threshold value, output are used to indicate the alarm signal that filter screen dirtying blocks up.
Optionally, it is corresponding to obtain preset time period for performing following steps according to photosensitive exponential quantity for processing unit 52
Photosensitive change rate：According to photosensitive exponential quantity, the corresponding photosensitive average value of preset time period is obtained；According to the history photosensitive value of storage
And photosensitive average value, calculate photosensitive change rate.
Optionally, processing unit 52 is counted for performing history photosensitive value and photosensitive average value of the following steps according to storage
Calculate photosensitive change rate：Pass through formula (Ht-Ht-1)/(Ht-1-Ht-2), photosensitive change rate is obtained, wherein, HtRepresent t-th of period
Corresponding photosensitive average value, history photosensitive value include Ht-1And Ht-2。
Optionally, whether processing unit 52, the run time for being additionally operable to detection air-conditioning are more than or equal to scheduled duration；In air-conditioning
Run time be more than or equal to scheduled duration in the case of, judge photosensitive average value whether be less than or equal to the second predetermined threshold value；It is defeated
Go out unit 54, if being additionally operable to photosensitive average value less than or equal to the second predetermined threshold value, output is used to indicate the alarm that filter screen dirtying blocks up
Signal.
Optionally, processing unit 52 are additionally operable to, in the case where receiving zeros data instruction input by user, to have deposited
The zeros data of storage.
Optionally, processing unit 52 are additionally operable to obtain the corresponding initial photosensitive value of air-conditioning start operation for the first time of storage；
If photosensitive average value is more than or equal to initial photosensitive value, by stored zeros data.
In embodiments of the present invention, the photosensitive exponential quantity detected using photosensitive sensor is received in preset time period；
According to photosensitive exponential quantity, the corresponding photosensitive change rate of preset time period is obtained；If photosensitive change rate is more than or equal to the first default threshold
Value, output are used to indicate the mode for the alarm signal that filter screen dirtying blocks up, pass through the photosensitive index detected based on photosensitive sensor
Value is filtered the dirty stifled detection of net, when the condition is satisfied output alarm signal, user is reminded to clean filter screen, having reached need not
The purpose that power of motor detection filter screen dirtying blocks up, it is achieved thereby that the technique effect for the accuracy that detection filter screen dirtying blocks up is improved,
And then it solves and can not accurately detect filter screen dirtying since correlation technique is detected by power of motor caused by filter screen dirtying blocks up and block up
The technical issues of.
The embodiments of the present invention are for illustration only, do not represent the quality of embodiment.
In the above embodiment of the present invention, all emphasize particularly on different fields to the description of each embodiment, do not have in some embodiment
The part of detailed description may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents can pass through others
Mode is realized.Wherein, the apparatus embodiments described above are merely exemplary, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode in actual implementation, for example, multiple units or component can combine or
Person is desirably integrated into another system or some features can be ignored or does not perform.Another, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
It connects, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can be located at a place or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
The form that hardware had both may be employed in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
It embodies, which is stored in a storage medium, is used including some instructions so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment the method for the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only memory (ROM, Read-OnlyMemory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can to store program code
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of dirty stifled detection method of air-conditioning filter net, which is characterized in that including：
Receive the photosensitive exponential quantity that photosensitive sensor detects in preset time period；
According to the photosensitive exponential quantity, the corresponding photosensitive change rate of the preset time period is obtained；
If the photosensitive change rate is more than or equal to the first predetermined threshold value, output is used to indicate the alarm signal that filter screen dirtying blocks up.
2. according to the method described in claim 1, it is characterized in that, described according to the photosensitive exponential quantity, acquisition is described to be preset
Period, corresponding photosensitive change rate included：
According to the photosensitive exponential quantity, the corresponding photosensitive average value of the preset time period is obtained；
According to the history photosensitive value of storage and the photosensitive average value, the photosensitive change rate is calculated.
3. the according to the method described in claim 2, it is characterized in that, history photosensitive value according to storage and described photosensitive flat
Average, calculating the photosensitive change rate includes：
Pass through formula (Ht-Ht-1)/(Ht-1-Ht-2), the photosensitive change rate is obtained, wherein, HtRepresent that t-th of period is corresponding
Photosensitive average value, the history photosensitive value include Ht-1And Ht-2。
4. according to the method described in claim 2, it is characterized in that, according to the photosensitive exponential quantity, when drawing described default
Between after the corresponding photosensitive average value of section, the method further includes：
Whether the run time for detecting air-conditioning is more than or equal to scheduled duration；
In the case where the run time of the air-conditioning is more than or equal to the scheduled duration, judge whether the photosensitive average value is small
In equal to the second predetermined threshold value；
If the photosensitive average value is less than or equal to second predetermined threshold value, output is used to indicate the alarm signal that filter screen dirtying blocks up
Number.
5. method according to any one of claim 1 to 4, which is characterized in that be used to indicate filter screen dirtying in output and block up
Alarm signal after, the method further includes：
In the case where receiving zeros data instruction input by user, by stored zeros data.
6. method according to any one of claim 1 to 4, which is characterized in that be used to indicate filter screen dirtying in output and block up
Alarm signal after, the method further includes：
Obtain the corresponding initial photosensitive value of air-conditioning start operation for the first time of storage；
If the photosensitive average value is more than the initial photosensitive value, by stored zeros data.
7. a kind of dirty stifled detection device of air-conditioning filter net, which is characterized in that including：
Receiving unit, for receiving the photosensitive exponential quantity that photosensitive sensor detects in preset time period；
Processing unit, for according to the photosensitive exponential quantity, obtaining the corresponding photosensitive change rate of the preset time period；
Output unit, if being more than or equal to the first predetermined threshold value for the photosensitive change rate, output is used to indicate filter screen dirtying and blocks up
Alarm signal.
8. device according to claim 7, which is characterized in that the processing unit is used to perform following steps according to
Photosensitive exponential quantity obtains the corresponding photosensitive change rate of the preset time period：
According to the photosensitive exponential quantity, the corresponding photosensitive average value of the preset time period is obtained；
According to the history photosensitive value of storage and the photosensitive average value, the photosensitive change rate is calculated.
9. device according to claim 8, which is characterized in that the processing unit is used to perform following steps according to storage
History photosensitive value and the photosensitive average value, calculate the photosensitive change rate：
Pass through formula (Ht-Ht-1)/(Ht-1-Ht-2), the photosensitive change rate is obtained, wherein, HtRepresent that t-th of period is corresponding
Photosensitive average value, the history photosensitive value include Ht-1And Ht-2。
10. device according to claim 8, which is characterized in that
Whether the processing unit, the run time for being additionally operable to detection air-conditioning are more than or equal to scheduled duration；In the fortune of the air-conditioning
In the case that the row time is more than or equal to the scheduled duration, judge whether the photosensitive average value is less than or equal to the second default threshold
Value；
The output unit, if being additionally operable to the photosensitive average value less than or equal to second predetermined threshold value, output is used to indicate
The alarm signal that filter screen dirtying blocks up.
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| CN110608509A (en) * | 2019-10-08 | 2019-12-24 | 宁波奥克斯电气股份有限公司 | Filter screen filth blockage detection method and device, air conditioner and storage medium |
| CN110887157A (en) * | 2018-09-10 | 2020-03-17 | 青岛海尔空调器有限总公司 | Air conditioner self-cleaning control method and device and computer storage medium |
| CN112179823A (en) * | 2020-08-31 | 2021-01-05 | 珠海格力电器股份有限公司 | Filth blockage detection method, device, equipment and storage medium |
| CN113091210A (en) * | 2021-04-09 | 2021-07-09 | 青岛海尔空调器有限总公司 | Method and device for determining cleanliness of dust filter screen, air conditioner and storage medium |
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