CN113465002B - Control method of automatic oil-smoke blocking machine and automatic oil-smoke blocking machine - Google Patents
Control method of automatic oil-smoke blocking machine and automatic oil-smoke blocking machine Download PDFInfo
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- CN113465002B CN113465002B CN202110817663.2A CN202110817663A CN113465002B CN 113465002 B CN113465002 B CN 113465002B CN 202110817663 A CN202110817663 A CN 202110817663A CN 113465002 B CN113465002 B CN 113465002B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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Abstract
The application relates to a control method of an automatic range hood and the automatic range hood. The method comprises the following steps: acquiring a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a selection strategy; determining a first concentration change rate according to the first number of smoke concentration data, and determining a second concentration change rate according to the second number of smoke concentration data; if the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to the concentration change rate threshold, adding 1 to the number of consecutive times; wherein the consecutive number of times represents the number of times that the absolute value of the consecutive difference values is less than or equal to the concentration change rate threshold; and if the continuous times reach the continuous times threshold value, acquiring current smoke concentration data, and determining the current gear of the automatic range hood according to the current smoke concentration data. By the method and the device, the use experience of a user can be improved.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, in particular to a control method for automatically blocking an oil smoke machine and the automatic blocking oil smoke machine.
Background
At present, the automatic range hood can detect the smoke concentration in the current working environment through a built-in photoelectric smoke concentration sensor, and automatically adjust gears according to the detected smoke concentration. Thus, the user does not need to manually adjust the gears according to the change of the smoke concentration, and the operation of the user is simplified.
However, when a user fries the food material during cooking, the smoke concentration may repeatedly change. At the moment, the automatic range hood can also frequently switch gears, so that the use experience of a user is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a control method for an automatic range hood and an automatic range hood.
In a first aspect, a method of controlling an automatic range hood is provided, the method comprising:
acquiring a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy;
determining a first concentration change rate according to the first number of smoke concentration data, and determining a second concentration change rate according to the second number of smoke concentration data;
if the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold, adding 1 to the continuous times; wherein the consecutive number of times represents a number of times that an absolute value of the difference value that is consecutive is less than or equal to the concentration change rate threshold;
and if the continuous times reach a preset continuous time threshold, acquiring current smoke concentration data, and determining the current gear of the automatic range hood according to the current smoke concentration data.
As an optional implementation, the method further comprises:
and if the absolute value of the difference value between the first concentration change rate and the second concentration change rate is larger than a preset concentration change rate threshold, setting the continuous times to be 0, acquiring a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy.
As an optional implementation, the selecting, according to a preset selection strategy, a second number of smoke concentration data from the first number of smoke concentration data includes:
selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of sampling time from large to small; alternatively, the first and second electrodes may be,
and selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of the sampling time from small to large.
As an alternative embodiment, the smoke concentration data comprises a smoke concentration value and a sampling time, and the determining a first rate of change of concentration from the first number of smoke concentration data and a second rate of change of concentration from the second number of smoke concentration data comprises:
determining a ratio of a difference value between a maximum smoke concentration value and a minimum smoke concentration value to a first sampling time length in the first number of smoke concentration data as the first concentration change rate; wherein the first sampling duration is a duration for collecting the first number of smoke concentration data;
determining a ratio of a difference value between the maximum smoke concentration value and the minimum smoke concentration value to a second sampling time length in the second number of smoke concentration data as the second concentration change rate; wherein the second sampling duration is a duration for collecting the second number of smoke concentration data.
As an optional implementation, the determining a current gear of the automatic range hood based on the current smoke concentration data includes:
and inquiring a target gear corresponding to the current smoke concentration data in a corresponding relation between the pre-stored smoke concentration data and gears, and determining the target gear as the current gear of the automatic range hood.
In a second aspect, an automatic range hood is provided, comprising: the smoke concentration sensor is connected with the main control device; wherein, the first and the second end of the pipe are connected with each other,
the main control device is used for acquiring a first number of smoke concentration data through the smoke concentration sensor according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy;
the main control device is further configured to determine a first concentration change rate according to the first number of smoke concentration data, and determine a second concentration change rate according to the second number of smoke concentration data;
the main control device is further configured to add 1 to the number of consecutive times if an absolute value of a difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold; wherein the consecutive number of times represents a number of times that an absolute value of the consecutive difference values is less than or equal to the concentration change rate threshold;
the main control device is further used for acquiring current smoke concentration data through the smoke concentration sensor if the continuous times reach a preset continuous times threshold value, and determining the current gear of the automatic range hood according to the current smoke concentration data.
As an optional implementation manner, the main control device is further configured to set the consecutive times to 0 if an absolute value of a difference between the first concentration change rate and the second concentration change rate is greater than a preset concentration change rate threshold, and perform the step of acquiring, according to a preset sampling period, a first number of smoke concentration data by the smoke concentration sensor, and selecting, according to a preset selection policy, a second number of smoke concentration data from the first number of smoke concentration data.
As an optional implementation manner, the main control device is configured to select the second number of smoke concentration data from the first number of smoke concentration data according to a sequence from a large sampling time to a small sampling time; or selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of sampling time from small to large.
As an optional implementation manner, the main control device is configured to determine, in the first number of smoke concentration data, a ratio of a difference between a maximum smoke concentration value and a minimum smoke concentration value to a first sampling time period as the first concentration change rate; wherein the first sampling duration is a duration for collecting the first number of smoke concentration data;
the main control device is further configured to determine, in the second number of smoke concentration data, a ratio of a difference between a maximum smoke concentration value and a minimum smoke concentration value to a second sampling duration as the second concentration change rate; wherein the second sampling duration is a duration for collecting the second number of smoke concentration data.
As an optional implementation manner, the main control device is configured to query a target gear corresponding to the current smoke concentration data in a pre-stored correspondence between the smoke concentration data and the gear, and determine the target gear as a current gear of the automatic range hood.
The application provides a control method for an automatic range hood and the automatic range hood. The automatic range hood collects a first number of smoke concentration data according to a preset sampling period, and selects a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy. The automatic range hood then determines a first rate of change of concentration based on the first number of smoke concentration data and a second rate of change of concentration based on the second number of smoke concentration data. And if the absolute value of the difference value between the first concentration change rate and the second concentration change rate is less than or equal to the preset concentration change rate threshold value, the automatic range hood adds 1 to the continuous times. Wherein the consecutive number of times indicates a number of times that an absolute value of the consecutive difference is less than or equal to the concentration change rate threshold. And if the continuous times reach a preset continuous time threshold, the automatic range hood collects current smoke concentration data, and determines the current gear of the automatic range hood according to the current smoke concentration data. Therefore, only when the concentration change rate is stable, the gears are switched, and the use experience of a user is improved.
Drawings
FIG. 1 is a schematic structural diagram of an automatic range hood provided by an embodiment of the present application;
fig. 2 is a flowchart of a control method for an automatic range hood according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of an example of a method for controlling an automatic range hood according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an automatic range hood according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The control method for the automatic range hood can be applied to the automatic range hood. As shown in fig. 1, the automatic range hood includes a main control device 110 and a smoke concentration sensor 120. The smoke concentration sensor 120 is configured to collect a first number of smoke concentration data, and send the collected first number of smoke concentration data to the main control device 110; the main control device 110 is used for selecting a second number of smoke concentration data from the first number of smoke concentration data; respectively determining a first concentration change rate and a second concentration change rate according to the first number of smoke concentration data and the second number of smoke concentration data; if the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold, adding 1 to the continuous times; and when the continuous times reach a preset continuous times threshold value, acquiring current smoke concentration data and determining the current gear of the automatic range hood. Optionally, the smoke concentration sensor may be a photoelectric smoke concentration sensor, and may also be another type of smoke concentration sensor, which is not limited in the embodiment of the present application. The photoelectric smoke concentration sensor comprises a light emitting tube and a light receiving tube which are arranged at a certain angle. When no smoke exists, the light emitted by the light emitting tube is transmitted in a straight line, and the light receiving tube cannot receive the light. When smoke exists, the light rays can be subjected to diffuse reflection when being transmitted to smoke particles, and the light rays subjected to diffuse reflection generate photocurrent after being received by the light ray receiving tube. Wherein the magnitude of the photocurrent is indicative of the concentration of the smoke.
The following describes a control method of an automatic range hood according to an embodiment of the present application in detail with reference to specific embodiments, and as shown in fig. 2, the specific steps are as follows:
step 201, collecting a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy.
In implementation, the automatic range hood may collect a first number of smoke concentration data according to a preset sampling period. Then, the automatic range hood can select a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy. The first number and the second number may be set by a skilled person according to experience, and embodiments of the present application are not limited.
Optionally, the automatic range hood may select the second number of smoke concentration data from the first number of smoke concentration data according to a preset selection policy, and the embodiment of the present application provides two possible implementation manners, and the other situations are similar to the two possible implementation manners. The method comprises the following specific steps:
in the first mode, according to the sequence of sampling time from large to small, the second number of smoke concentration data is selected from the first number of smoke concentration data.
And selecting a second number of smoke concentration data from the first number of smoke concentration data according to the sequence of the sampling time from small to large.
Step 202, determining a first concentration change rate according to the first number of smoke concentration data, and determining a second concentration change rate according to the second number of smoke concentration data.
In an implementation, after the automatic range hood determines the second number of smoke concentration data, the automatic range hood may further determine a first rate of change of concentration based on the first number of smoke concentration data, and determine a second rate of change of concentration based on the second number of smoke concentration data.
Optionally, the smoke concentration data includes a smoke concentration value and a sampling time, the automatic range hood determines a first concentration change rate according to the first number of smoke concentration data, and determines a second concentration change rate according to the second number of smoke concentration data, wherein the processing procedure of determining the second concentration change rate is as follows:
step one, in the first number of smoke concentration data, determining the ratio of the difference value of the maximum smoke concentration value and the minimum smoke concentration value to the first sampling time length as a first concentration change rate. Wherein the first sampling duration is a duration for collecting the first number of smoke concentration data.
In practice, the range hood may determine a maximum smoke concentration value, a minimum smoke concentration value, and a first sampling duration from the first number of smoke concentration data. The first sampling duration is a duration for collecting the first number of smoke density data (i.e., a difference between a sampling time of the last smoke density data and a sampling time of the first smoke density data in the first number of smoke density data). Then, the automatic range hood can calculate a difference value between the maximum smoke concentration value and the minimum smoke concentration value, and a ratio of the difference value to the first sampling time length is determined as a first concentration change rate.
And step two, determining the ratio of the difference value of the maximum smoke concentration value and the minimum smoke concentration value to the second sampling time length in the second number of smoke concentration data as a second concentration change rate. Wherein the second sampling duration is a duration taken to collect a second number of smoke concentration data.
In practice, the automatic range hood may determine a maximum smoke concentration value, a minimum smoke concentration value, and a second sampling duration from a second number of smoke concentration data. The second sampling duration is a duration for collecting the second number of smoke concentration data (i.e., a difference between a sampling time of the last smoke concentration data and a sampling time of the first smoke concentration data in the second number of smoke concentration data). Then, the automatic range hood can calculate the difference between the maximum smoke concentration value and the minimum smoke concentration value, and determine the ratio of the difference to the second sampling time length as a second concentration change rate.
In step 203, if the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to the preset concentration change rate threshold, 1 is added to the number of consecutive times. Wherein the consecutive number of times indicates a number of times that an absolute value of the consecutive difference is less than or equal to the concentration change rate threshold.
In practice, after the automatic range hood determines the first rate of change of concentration and the second rate of change of concentration, the absolute value of the difference between the first rate of change of concentration and the second rate of change of concentration may be further calculated. The automatic range hood may then further determine whether the absolute value of the difference is less than or equal to a preset concentration change rate threshold. The concentration change rate threshold may be set by a skilled person according to experience, and the embodiment of the present application is not limited. If the absolute value of the difference is smaller than or equal to the preset concentration change rate threshold, the concentration change rate is stable. Accordingly, the automatic range hood may add 1 to the consecutive times. Wherein the consecutive number of times is used to indicate the number of times the absolute value of consecutive differences is less than or equal to the concentration change rate threshold. Optionally, if the absolute value of the difference is greater than a preset threshold value of the concentration change rate, it indicates that the concentration change rate is unstable. Accordingly, the automatic range hood may set the number of consecutive times to 0 and perform step 201.
And 204, if the continuous times reach a preset continuous time threshold, acquiring current smoke concentration data, and determining the current gear of the automatic range hood according to the current smoke concentration data.
In implementation, the automatic range hood may further determine whether the consecutive number of times reaches a preset consecutive number threshold. The threshold value of the consecutive times may be set by a skilled person according to experience, and the embodiment of the present application is not limited. If the continuous times reach the preset continuous times threshold, the concentration change rate is stable in a long time. Correspondingly, the automatic range hood can collect current smoke concentration data, and the current gear of the automatic range hood is determined according to the current smoke concentration data. If the number of consecutive times does not reach the preset number of consecutive times threshold, the automatic range hood executes step 201.
Optionally, the processing procedure of determining the current gear of the automatic range hood according to the current smoke concentration data is to query a target gear corresponding to the current smoke concentration data in a pre-stored correspondence between the smoke concentration data and the gear, and determine the target gear as the current gear of the automatic range hood.
In implementation, the automatic range hood can be stored with the corresponding relation between the smoke concentration data and the gears in advance. After the automatic range hood is used for collecting the current smoke concentration data, a target gear corresponding to the current smoke concentration data can be further inquired in the corresponding relation between the pre-stored smoke concentration data and the gear, and the target gear is determined as the current gear of the automatic range hood.
The embodiment of the application also provides an example of a control method of the automatic range hood, as shown in fig. 3, the specific processing steps are as follows:
step 301, collecting a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy.
Step 302, determining a first concentration change rate according to the first number of smoke concentration data, and determining a second concentration change rate according to the second number of smoke concentration data.
Step 303, determining whether the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold.
If the absolute value of the difference between the first concentration change rate and the second concentration change rate is greater than the preset concentration change rate threshold, step 304 is executed, and step 301 is executed. If the absolute value of the difference between the first and second concentration change rates is less than or equal to the preset concentration change rate threshold, step 305 is performed.
Step 304, set the number of consecutive times to 0.
Step 305, add 1 to the consecutive times.
Step 306, determining whether the number of consecutive times reaches a preset number of consecutive times threshold.
If the consecutive times reaches the preset consecutive times threshold, step 307 is executed. If the number of consecutive times does not reach the preset consecutive times threshold, step 301 is performed.
And 307, acquiring current smoke concentration data, inquiring a target gear corresponding to the current smoke concentration data in a corresponding relation between the prestored smoke concentration data and gears, and determining the target gear as the current gear of the automatic range hood.
The embodiment of the application provides a control method for an automatic range hood. The automatic range hood collects a first number of smoke concentration data according to a preset sampling period, and selects a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy. The automatic range hood then determines a first rate of change of concentration based on the first number of smoke concentration data and a second rate of change of concentration based on the second number of smoke concentration data. And if the absolute value of the difference value between the first concentration change rate and the second concentration change rate is less than or equal to the preset concentration change rate threshold value, the automatic range hood adds 1 to the continuous times. Wherein the consecutive number of times indicates a number of times that an absolute value of consecutive differences is less than or equal to the concentration change rate threshold. And if the continuous times reach a preset continuous time threshold, the automatic range hood collects current smoke concentration data, and determines the current gear of the automatic range hood according to the current smoke concentration data. Therefore, only when the concentration change rate is stable, the gears are switched, and the use experience of a user is improved.
The embodiment of the present application further provides an automatic oil smoke blocking machine, as shown in fig. 4, the automatic oil smoke blocking machine includes: a master control device 410 and a smoke concentration sensor 420; wherein the content of the first and second substances,
the main control device 410 is configured to collect a first number of smoke concentration data through the smoke concentration sensor 420 according to a preset sampling period, and select a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection policy;
the main control device 410 is further configured to determine a first concentration change rate according to the first number of smoke concentration data, and determine a second concentration change rate according to the second number of smoke concentration data;
the main control device 410 is further configured to add 1 to the number of consecutive times if an absolute value of a difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold; wherein the consecutive number of times indicates the number of times the absolute value of consecutive differences is less than or equal to the concentration change rate threshold;
the main control device 410 is further configured to, if the number of consecutive times reaches a preset number of consecutive times threshold, acquire current smoke concentration data through the smoke concentration sensor 420, and determine a current gear of the automatic range hood according to the current smoke concentration data.
As an optional implementation manner, the main control device 410 is further configured to set the consecutive times to 0 if an absolute value of a difference between the first concentration change rate and the second concentration change rate is greater than a preset concentration change rate threshold, and perform the steps of acquiring, by the smoke concentration sensor 420, a first number of smoke concentration data according to a preset sampling period, and selecting, by the smoke concentration sensor, a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection policy.
As an optional embodiment, the main control device 410 is configured to select a second number of smoke concentration data from the first number of smoke concentration data according to a descending order of the sampling time; or selecting a second number of smoke concentration data from the first number of smoke concentration data according to the sequence of the sampling time from small to large.
As an optional implementation manner, the main control device 410 is configured to determine, as a first concentration change rate, a ratio of a difference between a maximum smoke concentration value and a minimum smoke concentration value to a first sampling duration in the first number of smoke concentration data; wherein the first sampling duration is a duration for acquiring a first number of smoke concentration data;
the main control device 410 is further configured to determine, as a second concentration change rate, a ratio of a difference between the maximum smoke concentration value and the minimum smoke concentration value to the second sampling duration in the second number of smoke concentration data; wherein the second sampling duration is a duration taken to acquire a second number of smoke concentration data.
As an optional implementation manner, the main control device 410 is configured to query a target gear corresponding to the current smoke concentration data in a pre-stored correspondence between the smoke concentration data and the gear, and determine the target gear as a current gear of the automatic range hood.
The embodiment of the application provides an automatic range hood. The main control device 410 collects a first number of smoke concentration data through the smoke concentration sensor 420 according to a preset sampling period, and selects a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy. The master control device 410 then determines a first rate of change of concentration based on the first number of smoke concentration data and a second rate of change of concentration based on the second number of smoke concentration data. If the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to the preset concentration change rate threshold, the main control device 410 adds 1 to the number of consecutive times. Wherein the consecutive number of times indicates a number of times that an absolute value of the consecutive difference is less than or equal to the concentration change rate threshold. If the continuous times reach the preset continuous times threshold value, the main control device 410 collects current smoke concentration data through the smoke concentration sensor 420, and determines the current gear of the automatic range hood according to the current smoke concentration data. Therefore, only when the concentration change rate is stable, the gears are switched, and the use experience of a user is improved.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (8)
1. A method of controlling an automatic range hood, the method comprising:
acquiring a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy;
determining a first concentration change rate according to the first number of smoke concentration data, and determining a second concentration change rate according to the second number of smoke concentration data;
if the absolute value of the difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold, adding 1 to the continuous times; wherein the consecutive number of times represents a number of times that an absolute value of the difference value that is consecutive is less than or equal to the concentration change rate threshold;
if the continuous times reach a preset continuous times threshold value, acquiring current smoke concentration data, and determining a current gear of the automatic range hood according to the current smoke concentration data;
selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy, wherein the selecting comprises: selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of sampling time from large to small; or selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of the sampling time from small to large.
2. The method of claim 1, further comprising:
and if the absolute value of the difference value between the first concentration change rate and the second concentration change rate is larger than a preset concentration change rate threshold, setting the continuous times to be 0, acquiring a first number of smoke concentration data according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy.
3. The method of claim 1, wherein the smoke concentration data comprises smoke concentration values and sampling times, and wherein determining a first rate of change of concentration from the first number of smoke concentration data and a second rate of change of concentration from the second number of smoke concentration data comprises:
determining a ratio of a difference value between a maximum smoke concentration value and a minimum smoke concentration value to a first sampling time length in the first number of smoke concentration data as the first concentration change rate; wherein the first sampling duration is a duration for collecting the first number of smoke concentration data;
determining a ratio of a difference value between the maximum smoke concentration value and the minimum smoke concentration value to a second sampling time length in the second number of smoke concentration data as the second concentration change rate; wherein the second sampling duration is a duration for collecting the second number of smoke concentration data.
4. The method of claim 1, wherein said determining a current gear of said automatic range hood based on said current smoke concentration data comprises:
and inquiring a target gear corresponding to the current smoke concentration data in a pre-stored corresponding relation between the smoke concentration data and the gears, and determining the target gear as the current gear of the automatic range hood.
5. An automatic range hood, characterized in that, automatic range hood includes: the smoke concentration sensor is connected with the main control device; wherein the content of the first and second substances,
the main control device is used for acquiring a first number of smoke concentration data through the smoke concentration sensor according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection strategy;
the main control device is further configured to determine a first concentration change rate according to the first number of smoke concentration data, and determine a second concentration change rate according to the second number of smoke concentration data;
the main control device is further configured to add 1 to the number of consecutive times if an absolute value of a difference between the first concentration change rate and the second concentration change rate is less than or equal to a preset concentration change rate threshold; wherein the consecutive number of times represents a number of times that an absolute value of the difference value that is consecutive is less than or equal to the concentration change rate threshold;
the main control device is further used for collecting current smoke concentration data through the smoke concentration sensor if the continuous times reach a preset continuous times threshold value, and determining a current gear of the automatic range hood according to the current smoke concentration data;
the main control device is used for selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of sampling time from large to small; or selecting the second number of smoke concentration data from the first number of smoke concentration data according to the sequence of the sampling time from small to large.
6. The automatic range hood as claimed in claim 5, wherein the master control device is further configured to set the number of consecutive times to 0 if an absolute value of a difference between the first concentration change rate and the second concentration change rate is greater than a preset concentration change rate threshold, and perform the steps of collecting a first number of smoke concentration data by the smoke concentration sensor according to a preset sampling period, and selecting a second number of smoke concentration data from the first number of smoke concentration data according to a preset selection policy.
7. The automatic range hood according to claim 5, wherein the main control device is configured to determine a ratio of a difference between a maximum smoke concentration value and a minimum smoke concentration value to a first sampling duration in the first number of smoke concentration data as the first concentration change rate; wherein the first sampling duration is a duration for collecting the first number of smoke concentration data;
the main control device is further configured to determine, in the second number of smoke concentration data, a ratio of a difference between a maximum smoke concentration value and a minimum smoke concentration value to a second sampling duration as the second concentration change rate; wherein the second sampling duration is a duration for collecting the second number of smoke concentration data.
8. The automatic range hood according to claim 5, wherein the main control unit is configured to query a target gear corresponding to the current smoke concentration data in a pre-stored correspondence between smoke concentration data and gears, and determine the target gear as the current gear of the automatic range hood.
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| CN202110817663.2A CN113465002B (en) | 2021-07-20 | 2021-07-20 | Control method of automatic oil-smoke blocking machine and automatic oil-smoke blocking machine |
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| CN108006735A (en) * | 2017-06-07 | 2018-05-08 | 宁波方太厨具有限公司 | A kind of range hood and its impeller use state detection, maintenance reminding method |
| CN114110697A (en) * | 2021-12-17 | 2022-03-01 | 珠海格力电器股份有限公司 | Control method and device of range hood and oil fume extraction equipment |
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