CN115164343B - PM value compensation method and device and air purification equipment - Google Patents
PM value compensation method and device and air purification equipment Download PDFInfo
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- CN115164343B CN115164343B CN202210858683.9A CN202210858683A CN115164343B CN 115164343 B CN115164343 B CN 115164343B CN 202210858683 A CN202210858683 A CN 202210858683A CN 115164343 B CN115164343 B CN 115164343B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000004887 air purification Methods 0.000 title abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 36
- 239000000428 dust Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000015654 memory Effects 0.000 description 18
- 238000012545 processing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013618 particulate matter Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/64—Airborne particle content
Abstract
The invention discloses a PM value compensation method and device and air purification equipment, wherein the PM value compensation method comprises the following steps: acquiring a humidity value and a PM detection value of the environment to be detected at the current moment; acquiring a plurality of humidity values of the environment to be detected in a preset time period before the current moment; determining the humidity change condition of the environment to be detected in the preset time period according to the humidity values; determining a PM compensation value according to the humidity value at the current moment and the humidity change condition; compensating the PM detection value with the PM compensation value; therefore, factors which influence the PM detection value in the environment can be taken into consideration, the accuracy of the detection result can be effectively improved, and the interference of the working environment on data can be reduced.
Description
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a PM value compensation method and device and air purification equipment.
Background
With the development of the age and the progress of technology, the living standard of people is generally improved, and thus, a healthier living environment is pursued. Air is an indispensable substance in our life, and in order to ensure that the breathed air is clean and odorless, an air purifier is generated, and in order to specifically purify PM2.5 in the air, a more scientific and reasonable detection algorithm is needed to be used as a control standard of the purifier.
Most household purifiers directly take the PM2.5 value as the PM2.5 value in the environment after detecting the PM2.5 value, the value taking mode is easy to be interfered, and errors are large under the condition of complex environment change.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a PM value compensation method, apparatus, and air purification device, so as to solve the problem that the error of the PM value directly obtained by detection is large.
According to a first aspect, an embodiment of the present invention provides a PM value compensation method, including the steps of: acquiring a humidity value and a PM detection value of the environment to be detected at the current moment; acquiring a plurality of humidity values of the environment to be detected in a preset time period before the current moment; determining the humidity change condition of the environment to be detected in the preset time period according to the humidity values; determining a PM compensation value according to the humidity value at the current moment and the humidity change condition; and compensating the PM detection value by using the PM compensation value to obtain a target value.
With reference to the first aspect, in a first implementation manner of the first aspect, the determining, according to the plurality of humidity values, a humidity change condition of the environment to be inspected during the preset period includes: determining the humidity change rate of the environment to be detected in the preset time period according to the humidity values; when the humidity change rate is larger than a preset first threshold value, judging that the humidity change of the environment to be detected is faster; and when the humidity change rate is smaller than or equal to the first threshold value, judging that the humidity change of the environment to be detected is slower.
With reference to the first implementation manner of the first aspect, in a second implementation manner of the first aspect, the determining the PM compensation value according to the humidity value at the current time and the humidity change condition includes: judging whether the humidity value at the current moment is smaller than a preset humidity threshold value or not; when the humidity value at the current moment is smaller than the humidity threshold value, determining the PM compensation value according to the humidity change condition; when the humidity value at the current moment is greater than or equal to the humidity threshold value, determining the absolute value of the PM compensation value according to the humidity value at the current moment; determining the positive and negative of the PM compensation value according to the humidity change condition; and obtaining the PM compensation value by using the absolute value of the PM compensation value and the positive and negative of the PM compensation value.
With reference to the first aspect, in a third implementation manner of the first aspect, the PM value compensation method further includes: and when a plurality of humidity values of the environment to be detected in a preset time period before the current moment cannot be acquired, determining the absolute value of the PM compensation value according to the humidity value of the current moment, and taking the absolute value of the PM compensation value as the PM compensation value.
With reference to the second implementation manner of the first aspect, in a fourth implementation manner of the first aspect, the determining the PM compensation value according to the humidity change condition includes: when the humidity of the environment to be detected changes rapidly, the PM compensation value is 0; and when the humidity change of the environment to be detected is slower, the PM compensation value is a preset value which is larger than 0.
With reference to the second implementation manner of the first aspect, in a fifth implementation manner of the first aspect, the determining, according to the humidity change condition, the positive and negative of the PM compensation value includes: when the humidity of the environment to be detected changes rapidly, the PM compensation value is a negative value; and when the humidity change of the environment to be detected is slower, the PM compensation value is a positive value.
With reference to the second implementation manner of the first aspect or the third implementation manner of the first aspect, in a sixth implementation manner of the first aspect, the determining, according to the humidity value at the current time, the absolute value of the PM compensation value includes: determining a humidity interval to which the humidity value at the current moment belongs; and obtaining the absolute value of the PM compensation value by utilizing the relation between the preset humidity interval and the compensation absolute value according to the humidity interval to which the humidity value at the current moment belongs.
With reference to the first aspect, in a seventh implementation manner of the first aspect, before determining the PM compensation value according to the humidity value at the current time and the humidity change condition, the method further includes: acquiring a temperature value of the environment to be detected at the current moment; correcting the humidity value at the current moment according to the temperature value at the current moment; and/or; before acquiring the plurality of humidity values of the environment to be detected in the preset time period before the current moment, the method further comprises the following steps: acquiring a temperature value of each humidity value at the moment; and correcting any humidity value by using the temperature value at the moment of the humidity value.
With reference to the fifth implementation manner of the first aspect, in an eighth implementation manner of the first aspect, before obtaining the absolute value of the PM compensation value according to the humidity interval to which the humidity value at the current time belongs by using a relationship between a preset humidity interval and a compensation absolute value, the method further includes: and determining the humidity change condition of the environment to be detected in the preset time period according to the plurality of humidity values, and selecting the relation between a humidity interval and a compensation absolute value.
With reference to the first aspect, in a ninth implementation manner of the first aspect, after compensating the PM detection value with the PM compensation value, the method further includes: acquiring a display value; determining a rate of change of the display value according to the display value and the target value; and controlling the display value to change according to the change rate.
According to a second aspect, the embodiment of the invention further provides a PM value compensation device, which comprises a first acquisition module, a second acquisition module, a humidity change condition determination module and a compensation module, wherein the first acquisition module is used for acquiring a humidity value and a PM detection value of the environment to be detected at the current moment; the second acquisition module is used for acquiring a plurality of humidity values of the environment to be detected in a preset time period before the current moment; the humidity change condition determining module is used for determining the humidity change condition of the environment to be detected in the preset time period according to the plurality of humidity values; the compensation module is used for determining a PM compensation value according to the humidity value at the current moment and the humidity change condition; and compensating the PM detection value by using the PM compensation value.
According to a third aspect, an embodiment of the present invention further provides an air cleaning apparatus, including a humidity sensor, a dust sensor, and a controller, where the humidity sensor, the dust sensor, and the controller are communicatively connected to each other, and the controller stores computer instructions, and the controller executes the computer instructions, so as to execute the PM value compensation method according to the first aspect or any implementation manner of the first aspect.
According to a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium storing computer instructions for causing the computer to perform the PM value compensation method according to the first aspect or any implementation manner of the first aspect.
According to the PM value compensation method, the PM value compensation device and the air purification equipment provided by the embodiment of the invention, the humidity value and the PM detection value of the current moment of the environment to be detected are obtained, a plurality of humidity values of the environment to be detected in a preset time period before the current moment are obtained, the humidity change condition of the environment to be detected in the preset time period is determined according to the plurality of humidity values, the PM compensation value is determined according to the humidity value and the humidity change condition of the current moment, and the PM detection value is compensated by utilizing the PM compensation value; therefore, factors which influence the PM detection value in the environment can be taken into consideration, the accuracy of the detection result can be effectively improved, and the interference of the working environment on data can be reduced.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and should not be construed as limiting the invention in any way, in which:
FIG. 1 is a flow chart of a PM value compensation method in embodiment 1 of the present invention;
FIG. 2 is a flowchart illustrating an example of the PM value compensation method according to embodiment 1 of the present invention;
fig. 3 is a flow chart of the PM value compensation apparatus according to embodiment 2 of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Example 1
Embodiment 1 of the invention provides a PM value compensation method. PM english is known as particlatapercent, and PM10 and PM2.5 are both diameters of particulate matter.
In embodiment 1 of the present invention, T represents an actually measured temperature value; h represents the humidity value actually measured; p represents the actual measured PM2.5 value; hb represents the compensation value for humidity at different temperatures; pb represents the compensation value of PM2.5 under different humidity, and Pb is a percentage; pj represents the step value of the PM2.5 value change; h' represents the final humidity value obtained by the treatment; p' represents the final PM2.5 value obtained by the processing.
As shown in fig. 1, the PM value compensation method of embodiment 1 of the invention includes the steps of:
s101: and acquiring a humidity value and a PM detection value of the environment to be detected at the current moment.
Specifically, a humidity sensor may be used to obtain a humidity value; the PM detection value may be acquired using a dust sensor. By way of example, PM may be PM2.5, PM10, etc.
Further, before determining the PM compensation value according to the humidity value at the current time and the humidity change condition, the method further includes: acquiring a temperature value of the environment to be detected at the current moment; and correcting the humidity value at the current moment according to the temperature value at the current moment. That is, the humidity values at different temperatures are compensated by the humidity compensation values to obtain more accurate ambient humidity.
The method is characterized in that the concentration of the particles in the air is influenced by the ambient humidity, the more accurate the ambient humidity is, the more errors of calculating the concentration of the particles in the environment can be reduced, and the ambient temperature influences the accuracy of the ambient humidity measurement, so that the accurate humidity value can be obtained by combining the measured temperature and humidity, and the subsequent judgment of the concentration of the particles in the environment can be more accurate.
S102: and acquiring a plurality of humidity values of the environment to be detected in a preset time period before the current moment.
Further, before acquiring the plurality of humidity values of the environment to be inspected in the preset time period before the current time, the method further includes: acquiring a temperature value of each humidity value at the moment; and correcting any humidity value by using the temperature value at the moment of the humidity value. That is, the humidity values at different temperatures are compensated by the humidity compensation values to obtain more accurate ambient humidity.
S103: and determining the humidity change condition of the environment to be detected in the preset time period according to the humidity values.
Specifically, the determining, according to the plurality of humidity values, the humidity change condition of the environment to be detected in the preset time period may adopt the following technical scheme: determining the humidity change rate of the environment to be detected in the preset time period according to the humidity values; when the humidity change rate is larger than a preset first threshold value, judging that the humidity change of the environment to be detected is faster; and when the humidity change rate is smaller than or equal to the first threshold value, judging that the humidity change of the environment to be detected is slower.
For example, a change in humidity of more than 15% to 25% within 1h to 2h may be considered a faster change in humidity, otherwise a slower change in humidity may be considered.
S104: and determining a PM compensation value according to the humidity value at the current moment and the humidity change condition.
Specifically, the determining the PM compensation value according to the humidity value at the current time and the humidity change condition may adopt the following method: judging whether the humidity value at the current moment is smaller than a preset humidity threshold value or not; when the humidity value at the current moment is smaller than the humidity threshold value, determining the PM compensation value according to the humidity change condition; when the humidity value at the current moment is greater than or equal to the humidity threshold value, determining the absolute value of the PM compensation value according to the humidity value at the current moment; determining the positive and negative of the PM compensation value according to the humidity change condition; and obtaining the PM compensation value by using the absolute value of the PM compensation value and the positive and negative of the PM compensation value.
For example, the humidity threshold may be 50%.
More specifically, when the humidity value at the current time is greater than or equal to the humidity threshold, the determining, according to the humidity change condition, the positive and negative of the PM compensation value includes: when the humidity of the environment to be detected changes rapidly, the PM compensation value is a negative value; and when the humidity change of the environment to be detected is slower, the PM compensation value is a positive value. This is because, when the humidity change is rapid, a rapid humidity rise causes the PM detection value to be virtually high, and thus negative compensation is required, i.e., the PM compensation value is negative; when the humidity change of the environment to be detected is slow, the detected value of PM is slightly lower than the actual value due to slow deposition caused by the humidity effect, so positive compensation is needed, namely, the PM compensation value is a positive value.
When the humidity value at the current time is greater than or equal to the humidity threshold, the determining the absolute value of the PM compensation value according to the humidity value at the current time includes: determining a humidity interval to which the humidity value at the current moment belongs; and obtaining the absolute value of the PM compensation value by utilizing the relation between the preset humidity interval and the compensation absolute value according to the humidity interval to which the humidity value at the current moment belongs.
Further, before obtaining the absolute value of the PM compensation value according to the humidity interval to which the humidity value at the current time belongs and by using the relationship between the preset humidity interval and the compensation absolute value, the method further includes: and determining the humidity change condition of the environment to be detected in the preset time period according to the plurality of humidity values, and selecting the relation between a humidity interval and a compensation absolute value. That is, the two cases of faster humidity change and slower humidity change correspond to the relationship between different humidity intervals and the compensation absolute value, respectively.
More specifically, when the humidity value at the current time is smaller than the humidity threshold, the determining the PM compensation value according to the humidity change condition includes: when the humidity of the environment to be detected changes rapidly, the PM compensation value is 0; and when the humidity change of the environment to be detected is slower, the PM compensation value is a preset value which is larger than 0.
S105: and compensating the PM detection value by using the PM compensation value to obtain a target value.
Specifically, the PM detection value is compensated by the PM compensation value by adding the PM compensation value to the PM detection value.
Further, after compensating the PM detection value by using the PM compensation value to obtain a target value, the method further includes: acquiring a display value; determining a rate of change of the display value according to the display value and the target value; and controlling the display value to change according to the change rate.
For example, after determining the PM2.5 compensation value, i.e., the final PM2.5 display value (target value), the current display value is continuously approximated to the target value by accumulating the step values, the step values are divided into five stages Pj1, pj2, … … Pjn (Pj 1 < Pj2 < … … < Pjn), if 2, 4, 6, 8, 10, and when the difference between the display value and the target value is greater than 70% of the target value, the maximum step value is accumulated (e.g., 10+10+10) until the difference between the display value and the target value is less than 70%, and the ratio between the difference between the display value and the target value is divided into five stages of 0% -10%, 10% -30%, 30% -50%, 50% -70%, and 70% -100%, each of which corresponds to the five step values 2, 4, 6, 8, and 10, and when the difference between the display value and the target value is less than or equal to 2, the display is considered to be within the error range.
The method is characterized in that the concentration value of the particulate matters detected by the sensor fluctuates and is greatly disturbed by the environment, for example, if the sensor is directly blown with a smoke gas, the data detected by the sensor is increased and then decreased in a short time, if the processed data (corresponding to the target value in the text) is directly used as the display value, the fluctuation of the readings in a large range and in an indefinite way is observed when the fluctuation of the environment is large, and the user can feel that the machine is problematic or not, so that the fluctuation of the display value can be effectively reduced and the user experience can be optimized by adopting a method of continuously approaching the target value by adopting a step value.
When a plurality of humidity values of the environment to be inspected in a preset time period before the current time cannot be acquired, determining an absolute value of the PM compensation value according to the humidity value of the current time, and taking the absolute value of the PM compensation value as the PM compensation value. That is, when a plurality of humidity values of the environment to be inspected within a preset period of time (i.e., an operation time is short) before the current time cannot be acquired, all PM compensation values are regarded as positive values.
To illustrate the specific method of PM compensation in more detail, the following specific examples are given.
(1) When the humidity value at the current moment is greater than or equal to 50%, after long-time operation, the humidity does not fluctuate in a large range (namely, the humidity change of the environment to be detected is slower) or the operation time is shorter, the machine does not judge that the environment humidity value rises rapidly in a short time, so that the environment humidity can be changed rapidly, a humidifier and other objects which can change the environment humidity rapidly are not found in the working environment, PM2.5 in the air can be deposited slowly due to the humidity effect, the detected value is slightly lower than the actual value, at the moment, the compensation values Pb1, pb2 and … … Pbn positively compensate the PM2.5 value, namely, P '=P+ (P×Pb1), and the compensated value is taken as a final PM2.5 display value P'.
For example: four compensation values Pb1 to Pb4 are set to be 2%, 4%, 6%, 8% respectively corresponding to four humidity ranges of 50% -60%, 60% -70%, 70% -80%, 80% -100% divided, and when the detected PM2.5 value is 255 and the actual humidity is 55%, the actual PM2.5 value P' =255+ (255×0.02) =260, and 260 is taken as the final display value.
(2) When the humidity value at the current moment is greater than or equal to 50%, and the humidity rises in a short time (i.e. the humidity change of the environment to be detected is faster), it can be considered that the environment humidity can be changed quickly due to the existence of a humidifier or other article in the working environment, and the detected PM2.5 value is virtually high due to the rapid humidity rise, and at this time, the compensation values Pb1, pb2 and … … Pbn negatively compensate the PM2.5 value, that is, P' =p- (p×p1), and the compensated value is taken as the final PM2.5 display value.
For example: setting four compensation values Pb1 to Pb4 to be 3%, 6%, 8% and 10% respectively corresponding to four humidity intervals of 50% -60%, 60% -70%, 70% -80% and 80% -100% respectively, and when the detected PM2.5 value is 255 and the actual humidity is 55%, taking 247 as a final display value, the actual PM2.5 value P' =255- (255×0.03) =247.
(3) When the humidity value at the current moment is less than 50% and the humidity change of the environment to be detected is slower, the influence of the humidity on the PM2.5 value is less, compensation processing is not carried out on the PM2.5 value, the detection value P is directly used as a target display value P ', and then the detection value P is continuously approximated to the P' by a step value (the difference between the two values is considered to be displayed within the range of the reached error when the difference is less than or equal to 2); this is because, in general, the humidity value at the current moment is less than 50% and the slow change of the humidity of the environment to be detected can indicate that the humidity of the environment at the moment is stable, and on the premise that the humidity is low, the concentration detection of the particulate matters in the air is not greatly influenced, so that compensation is not needed;
(4) When the humidity value at the current moment is smaller than 50% and the humidity change of the environment to be detected is faster, the PM2.5 value is compensated (for example, 3%) by the same compensation value when the humidity value is smaller (in the range of 0% -50% above), the detection value P is taken as a target display value P ', and then the detection value P is continuously approximated to P' by a step value (when the difference between the two values is less than or equal to 2, the detection value P is considered to be displayed within the range of the reached error). This is because, when the humidity value at the current moment is less than 50% and the humidity of the environment to be detected changes rapidly, it is indicated that there are some interference sources (humidifiers, etc.) that disturb the environment humidity, and this severe humidity fluctuation can cause the particulate matter in the air to condense under the influence of water vapor to make the detection value higher, so compensation is performed.
Therefore, according to the PM value compensation method provided by the embodiment 1 of the invention, more accurate ambient humidity is obtained by compensating humidity values at different temperatures by using the humidity compensation value Hb, then the detected PM2.5 value P is compensated by using the compensation value Pb according to the humidity values and the humidity change conditions, meanwhile, the displayed PM2.5 value is not directly refreshed into a detection value (target value), but gradually approaches the compensated PM2.5 value P by using the step value Pj, and when the difference between the display value and the detection value (target value) is less than or equal to 2, the display is considered to be within an error range.
Example 2
Corresponding to embodiment 1 of the present invention, embodiment 2 of the present invention provides a PM value compensation apparatus. Fig. 3 is a schematic structural diagram of a PM value compensation apparatus according to embodiment 2 of the present invention, and as shown in fig. 3, the PM value compensation apparatus according to embodiment 2 of the present invention includes a first obtaining module 20, a second obtaining module 21, a humidity change condition determining module 22, and a compensation module 23.
Specifically, the first obtaining module 20 is configured to obtain a humidity value and a PM detection value of a current time of the environment to be detected;
a second obtaining module 21, configured to obtain a plurality of humidity values of the environment to be inspected in a preset period of time before the current time;
a humidity change condition determining module 22, configured to determine a humidity change condition of the environment to be inspected in the preset time period according to the plurality of humidity values;
a compensation module 23, configured to determine a PM compensation value according to the humidity value at the current time and the humidity change condition; and compensating the PM detection value by using the PM compensation value.
The specific details of the PM value compensation apparatus may be understood correspondingly with reference to the corresponding related descriptions and effects in the embodiments shown in fig. 1 to 3, which are not repeated herein.
Example 3
The embodiment of the invention also provides air purifying equipment, which comprises a humidity sensor, a dust sensor and a controller, wherein the controller comprises a processor and a memory, and the processor and the memory can be connected through a bus or other modes.
The processor may be a central processing unit (Central Processing Unit, CPU). The processor may also be any other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof.
The memory, as a non-transitory computer readable storage medium, may be used to store a non-transitory software program, a non-transitory computer executable program, and modules, such as program instructions/modules (e.g., the first acquisition module 20, the second acquisition module 21, the humidity change condition determination module 22, and the compensation module 23 shown in fig. 3) corresponding to the PM value compensation method in the embodiment of the invention. The processor executes various functional applications of the processor and data processing by running non-transitory software programs, instructions, and modules stored in the memory, i.e., to implement the PM value compensation method in the method embodiments described above.
The memory may include a memory program area and a memory data area, wherein the memory program area may store an operating system, at least one application program required for a function; the storage data area may store data created by the processor, etc. In addition, the memory may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid state storage device. In some embodiments, the memory may optionally include memory located remotely from the processor, the remote memory being connectable to the processor through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The one or more modules are stored in the memory and when executed by the processor perform the PM value compensation method of the embodiment shown in fig. 1-2.
The specific details of the air cleaning apparatus described above may be understood correspondingly with reference to the corresponding relevant descriptions and effects in the embodiments shown in fig. 1 to 3, and will not be repeated here.
It will be appreciated by those skilled in the art that implementing all or part of the above-described embodiment method may be implemented by a computer program to instruct related hardware, where the program may be stored in a computer readable storage medium, and the program may include the above-described embodiment method when executed. Wherein the storage medium may be a magnetic Disk, an optical Disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a Flash Memory (Flash Memory), a Hard Disk (HDD), or a Solid State Drive (SSD); the storage medium may also comprise a combination of memories of the kind described above.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations are within the scope of the invention as defined by the appended claims.
Claims (11)
1. A PM value compensation method, characterized by comprising:
acquiring a humidity value and a PM detection value of the environment to be detected at the current moment;
acquiring a plurality of humidity values of the environment to be detected in a preset time period before the current moment;
determining the humidity change condition of the environment to be detected in the preset time period according to the humidity values;
determining a PM compensation value according to the humidity value at the current moment and the humidity change condition;
compensating the PM detection value by using the PM compensation value to obtain a target value;
the determining the PM compensation value according to the humidity value at the current time and the humidity change condition includes:
judging whether the humidity value at the current moment is smaller than a preset humidity threshold value or not;
when the humidity value at the current moment is smaller than the humidity threshold value, determining the PM compensation value according to the humidity change condition;
when the humidity value at the current moment is greater than or equal to the humidity threshold value, determining the absolute value of the PM compensation value according to the humidity value at the current moment; determining the positive and negative of the PM compensation value according to the humidity change condition; and obtaining the PM compensation value by using the absolute value of the PM compensation value and the positive and negative of the PM compensation value.
2. The method of claim 1, wherein determining a humidity change of the environment to be inspected over the preset time period from the plurality of humidity values comprises:
determining the humidity change rate of the environment to be detected in the preset time period according to the humidity values;
when the humidity change rate is larger than a preset first threshold value, judging that the humidity change of the environment to be detected is faster;
and when the humidity change rate is smaller than or equal to the first threshold value, judging that the humidity change of the environment to be detected is slower.
3. The method as recited in claim 1, further comprising:
and when a plurality of humidity values of the environment to be detected in a preset time period before the current moment cannot be acquired, determining the absolute value of the PM compensation value according to the humidity value of the current moment, and taking the absolute value of the PM compensation value as the PM compensation value.
4. The method of claim 2, wherein said determining said PM compensation value based on said humidity change condition comprises:
when the humidity of the environment to be detected changes rapidly, the PM compensation value is 0;
and when the humidity change of the environment to be detected is slower, the PM compensation value is a preset value which is larger than 0.
5. The method of claim 2, wherein said determining the positive and negative of the PM compensation value based on the humidity change condition comprises:
when the humidity of the environment to be detected changes rapidly, the PM compensation value is a negative value;
and when the humidity change of the environment to be detected is slower, the PM compensation value is a positive value.
6. The method of claim 1, wherein said determining an absolute value of the PM compensation value from the humidity value at the current time comprises:
determining a humidity interval to which the humidity value at the current moment belongs;
and obtaining the absolute value of the PM compensation value by utilizing the relation between the preset humidity interval and the compensation absolute value according to the humidity interval to which the humidity value at the current moment belongs.
7. The method of claim 1, further comprising, prior to determining a PM compensation value based on the current time humidity value and the humidity change condition:
acquiring a temperature value of the environment to be detected at the current moment;
correcting the humidity value at the current moment according to the temperature value at the current moment;
and/or;
before acquiring the plurality of humidity values of the environment to be detected in the preset time period before the current moment, the method further comprises the following steps:
acquiring a temperature value of each humidity value at the moment;
and correcting any humidity value by using the temperature value at the moment of the humidity value.
8. The method according to claim 6, further comprising, before obtaining the absolute value of the PM compensation value from a preset relationship between a humidity interval and a compensation absolute value according to a humidity interval to which the humidity value at the current time belongs:
and determining the humidity change condition of the environment to be detected in the preset time period according to the plurality of humidity values, and selecting the relation between a humidity interval and a compensation absolute value.
9. The method according to claim 1, characterized by further comprising, after compensating the PM detection value with the PM compensation value to obtain a target value:
acquiring a display value;
determining a rate of change of the display value according to the display value and the target value;
and controlling the display value to change according to the change rate.
10. An air cleaning apparatus, comprising:
a humidity sensor;
a dust sensor;
the humidity sensor, the dust sensor and the controller are in communication connection with each other, computer instructions are stored in the controller, and the controller executes the PM value compensation method according to any one of claims 1 to 9 by executing the computer instructions.
11. A computer-readable storage medium storing computer instructions for causing the computer to perform the PM value compensation method according to any one of claims 1 to 9.
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