Range hood and switching control method and device thereof

Abstract

The application discloses a range hood and a starting and stopping control method and device thereof, and is applied to the field of kitchen appliances. The method comprises the following steps: obtaining historical starting and stopping fan data of the range hood, wherein the historical starting and stopping fan data comprises smoke concentration data generated at a starting time and / or a stopping time of a fan in an environment where the range hood is located; updating a starting and stopping control strategy of the range hood and a reference smoke concentration used by the starting and stopping control strategy according to the historical starting and stopping fan data; wherein the starting and stopping control strategy is used for controlling automatic starting and stopping of the fan of the range hood according to the reference smoke concentration and an actual smoke concentration of the environment where the range hood is located. Through the application, the technical problem that automatic starting and stopping of the fan of the range hood according to the smoke concentration does not meet the individualized needs of users is at least solved to a certain extent.

Description

Technical Field

[0001] This invention belongs to the field of kitchen appliances, and particularly relates to a range hood and its on / off control method and device. Background Technology

[0002] Generally, users need to manually change the operating status of the range hood. Forgetting to turn on the range hood during cooking will affect the user's cooking experience, or forgetting to turn it off will lead to energy waste.

[0003] As people pursue a higher quality of life, range hoods can be equipped with smoke concentration detection devices to detect the smoke concentration generated during cooking and adjust the operating parameters of the range hood according to the smoke concentration data. However, the judgment of smoke concentration is based on fixed parameters, and the determination of when to turn the range hood on and off is not accurate, which cannot meet the personalized needs of users. Summary of the Invention

[0004] This invention provides a range hood and its on / off control method and device, which at least partially solves the technical problem that controlling the automatic start and stop of the range hood fan based on smoke concentration does not meet the personalized needs of users.

[0005] In a first aspect, embodiments of the present invention provide a method for controlling the on / off operation of a range hood, comprising: acquiring historical on / off fan data of the range hood, the historical on / off fan data including smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off; updating the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy based on the historical on / off fan data; wherein, the on / off control strategy is used to control the automatic start and stop of the fan of the range hood based on the reference smoke concentration and the actual smoke concentration in the environment where the range hood is located.

[0006] In conjunction with the first aspect, in some implementations, the method further includes: when the range hood enters automatic mode, running the on / off control strategy; under the control of the on / off control strategy, controlling the automatic start and stop of the range hood fan according to the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located.

[0007] In conjunction with the first aspect, in some implementations, controlling the automatic start and stop of the range hood fan based on the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located includes: monitoring the actual smoke concentration of the environment where the range hood is located; if the range hood fan is in a stopped state and the actual smoke concentration is detected to reach the reference smoke concentration, controlling the range hood fan to start; if the range hood fan is in a running state and the actual smoke concentration is detected to reach the reference smoke concentration, controlling the range hood fan to shut down.

[0008] In conjunction with the first aspect, in some implementations, the step of obtaining the historical on / off fan data of the range hood is executed each time a data update condition is triggered, so as to obtain new historical on / off data.

[0009] In conjunction with the first aspect, in some implementations, the smoke concentration data includes a first type of smoke concentration data when the fan is manually turned on and / or manually turned off; the step of updating the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy based on the historical fan on / off data includes: averaging the smoke concentration values ​​in the first type of smoke concentration data to obtain a target smoke concentration; replacing the reference smoke concentration currently used by the on / off control strategy with the target smoke concentration to update the on / off control strategy and the reference smoke concentration used by the on / off control strategy.

[0010] In conjunction with the first aspect, in some implementations, the historical fan switching data includes multiple data records, and each data record includes the smoke concentration value of the environment where the range hood is located when the fan is turned on or off, and the associated information corresponding to the smoke concentration value; the step of updating the range hood's on / off control strategy and the reference smoke concentration used by the on / off control strategy based on the historical fan switching data includes: preprocessing the historical fan switching data to obtain training sample data; and using the training sample data to perform machine learning to update the on / off control strategy and the reference smoke concentration used by the on / off control strategy.

[0011] In conjunction with the first aspect, in some implementations, the preprocessing of the historical fan switching data to obtain training sample data includes: acquiring scene data of the range hood; enhancing the association information of each data record in the historical fan switching data based on the scene data to obtain enhanced fan switching data; and classifying and labeling each data record in the enhanced fan switching data to form the training sample data.

[0012] In conjunction with the first aspect, in some implementations, the classification and labeling of each data record in the enhanced on / off fan data includes: for each fan start-up data record generated when the fan automatically starts, labeling the fan start-up data record with a positive or negative sample label based on the user processing operation after the fan automatically starts; for each fan stop-down data record generated when the fan automatically stops, labeling the fan stop-down data record with a positive or negative sample label based on the user processing operation after the fan automatically stops; labeling each data record generated when the user manually starts and / or stops the fan with a positive sample label; and forming the training sample data based on each data record and its sample label.

[0013] In conjunction with the first aspect, in some implementations, the step of classifying and labeling each data record in the enhanced switching fan data to form the training sample data further includes: for each data record, adding one or more of the following classification labels based on the association information of the data record: personnel classification label, holiday classification label, location classification label, lighting status classification label, and time classification label; and forming the training sample data based on each data record and the various classification labels of the data record.

[0014] In conjunction with the first aspect, in some implementations, each data record in the enhanced switch fan data includes: fan on data record and / or fan off data record; wherein, the fan on data record includes: when the fan is on, the smoke concentration value of the environment where the range hood is located, and at least one of the following related information: fan on-time, fan usage time after on-time, and at least one of the following information at the time the fan is on: range hood lighting status, date information, geographical location information, weather conditions information, personnel information, and holiday information; wherein, the fan off data record includes: when the fan is off, the smoke concentration value of the environment where the range hood is located, and at least one of the following related information: fan off-time, fan off-time, and at least one of the following information: range hood lighting status, date information, geographical location information, weather conditions information, personnel information, and holiday information.

[0015] Secondly, embodiments of the present invention provide a range hood on / off control device, comprising: a data acquisition unit, configured to acquire historical on / off fan data of the range hood, the historical on / off fan data including smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off; and a strategy update unit, configured to update the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy based on the historical on / off fan data; wherein the on / off control strategy is used to control the automatic start and stop of the range hood fan based on the reference smoke concentration and the actual smoke concentration in the environment where the range hood is located.

[0016] Thirdly, embodiments of the present invention provide a range hood, including one or more processors and one or more memories, wherein the one or more memories store at least one piece of program code, and the at least one piece of program code is loaded and executed by the one or more processors to implement the method described in any embodiment of the first aspect.

[0017] The one or more technical solutions provided in the embodiments of the present invention have at least the following effects or advantages:

[0018] Because this invention updates the automatic start / stop control strategy for the range hood fan and the reference smoke concentration used in the control strategy based on historical fan switching data, and because the historical fan switching data includes smoke concentration data of the environment where the range hood is located at the time the fan is turned on and / or turned off, the start / stop control strategy and the reference smoke concentration used in the control strategy are not fixed, but can be dynamically adjusted according to the smoke concentration at historical fan switching times. This allows for automatic fan switching based on the subjective smoke-free time points of different users during actual cooking, thus avoiding excessive smoke exhaust that wastes energy and meeting the personalized smoke-free needs of different users. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart of the on / off control method for a range hood in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the tobacco hood on / off control device in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a range hood in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0024] Firstly, embodiments of the present invention provide a method for controlling the on / off operation of a range hood, applicable to a range hood. (See reference...) Figure 1 As shown, the range hood on / off control method provided in this embodiment of the invention includes the following steps S101-S102:

[0025] S101. Obtain historical fan switching data of the range hood. The historical fan switching data includes the smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or when the fan is turned off.

[0026] S102. Based on historical fan switching data, update the range hood's on / off control strategy and the reference smoke concentration used in the on / off control strategy. The on / off control strategy is used to control the automatic start and stop of the range hood's fan based on the reference smoke concentration and the actual smoke concentration in the environment where the range hood is located.

[0027] In the specific implementation process, in order to more accurately control the automatic start and stop of the range hood fan, an update condition can be preset. Each time the preset update condition is triggered, the new historical fan on / off data of the range hood is re-acquired. After each acquisition of new historical on / off data, the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy are updated based on the currently acquired historical fan on / off data.

[0028] In some implementations, the preset update conditions may be: periodically acquiring historical fan switching data of the range hood according to a preset frequency; and after each acquisition of new historical fan switching data, updating the range hood's on / off control strategy and the reference smoke concentration used by the on / off control strategy based on the currently acquired historical fan switching data.

[0029] In some implementations, the preset update condition may be: when the accuracy of the range hood's fan in automatically starting and stopping according to the on / off control strategy and the reference smoke concentration used by the on / off control strategy is lower than a preset accuracy threshold, new historical on / off fan data of the range hood is triggered to be acquired again; and after each acquisition of new historical on / off fan data of the range hood, the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy are updated according to the currently acquired historical on / off fan data.

[0030] In step S101, the historical fan switching data acquired for the current time can be the fan switching data from the most recent week, the most recent 14 days, or the most recent month. Each time the historical fan switching data is acquired, it is different, thus ensuring that the acquired historical fan switching data better matches the user's current subjective perception of smoke concentration.

[0031] Both of the above implementation methods allow for adjustments to the on / off control strategy and reference smoke concentration based on user changes, thereby improving the accuracy of automatic fan start / stop.

[0032] The following describes the process of automatically starting and stopping the range hood fan based on the on / off control strategy and the reference smoke concentration:

[0033] First, it should be noted that the range hood can be pre-configured with multiple modes. When the range hood enters automatic mode, it runs the on / off control strategy. Under the control of the on / off control strategy, the range hood fan can automatically start and stop based on the reference smoke concentration and the actual smoke concentration in the environment where the range hood is located.

[0034] In the specific implementation process, the range hood fan is automatically started and stopped based on the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located. This includes the following steps: monitoring the actual smoke concentration of the environment where the range hood is located; if the range hood fan is in a stopped state and the actual smoke concentration reaches the reference smoke concentration, the range hood fan is turned on; if the range hood fan is in a running state and the actual smoke concentration reaches the reference smoke concentration, the range hood fan is turned off. Thus, the user does not need to manually control the start and stop of the range hood fan; instead, it starts and stops automatically.

[0035] In this embodiment of the invention, step S102 involves updating the on / off control strategy of the range hood and the reference smoke concentration used in the on / off control strategy based on the fan switching data. This can be implemented in various ways, and will be described below:

[0036] Implementation Method 1:

[0037] The acquired historical fan switching data only includes smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off. Furthermore, to accurately reflect the user's subjective need for a smoke-free environment, in this embodiment, the acquired smoke concentration data only includes the first type of smoke concentration data when the fan is manually turned on and / or manually turned off. This first type of smoke concentration data is generated during the user's historical use of the range hood, specifically including the smoke concentration values ​​when the user manually turns on the fan and / or when the user manually turns off the fan.

[0038] Among them, the smoke concentration value when the fan is manually turned on: the smoke concentration value of the environment where the range hood is located is collected each time the range hood fan is manually turned on by the user.

[0039] Among them, the smoke concentration value when the fan is manually turned off: the smoke concentration value of the environment where the range hood is located is collected each time the range hood fan is manually turned off by the user.

[0040] Based on this, in step S102, the target smoke concentration can be calculated based on the first type of smoke concentration data generated by the user manually switching the fan on and off. The target smoke concentration is then used to replace the reference smoke concentration currently used by the on / off control strategy, thereby updating the on / off control strategy and the reference smoke concentration used by the on / off control strategy according to the user's subjective smoke-free requirements.

[0041] It should be noted that in step S102, the reference smoke concentration used by the power-on / off control strategy may include one or more. If multiple reference smoke concentrations are used, they may be different for different users or different for different times.

[0042] Specifically, the target smoke concentration value can be obtained by averaging the smoke concentration values ​​from the first type of smoke concentration data generated by the user manually turning the fan on and off. For example, the smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or off may contain the following i smoke concentration values: M1, M2, M3, M4, M5, M6, ..., M i The target smoke concentration, calculated using the mean, is: M = (M1, M2, M3, M4, M5, M6, ..., M i ) / i.

[0043] Furthermore, to improve the accuracy of calculating the target smoke concentration, the first type of smoke concentration data generated by the user manually switching the fan on and off can be filtered out to remove invalid smoke concentration values, thereby selecting multiple valid smoke concentration values; the target smoke concentration value is obtained by averaging the values ​​of each valid smoke concentration value.

[0044] For example, based on a preset concentration range, the system can filter out all smoke concentration values ​​in the first type of smoke concentration data that exceed the upper or lower limits of the preset concentration range. In this way, invalid smoke concentration values ​​collected due to user error in turning the system on or off can be filtered out.

[0045] Implementation Method Two:

[0046] In some implementations, the historical fan switching data acquired in step S101 includes multiple data records. It should be noted that each time the range hood fan is turned on or off, a corresponding data record is generated. Each data record includes the smoke concentration value of the environment where the range hood is located when the fan is turned on or off, and the associated information corresponding to that smoke concentration value. Therefore, in specific implementations, the data records in the historical fan switching data may include fan on data records and / or fan off data records.

[0047] One fan activation data record includes: the smoke concentration value of the environment where the range hood is located when the fan is turned on once, and the associated information corresponding to that smoke concentration value. Specifically, the associated information may include: fan activation method (manual or automatic), fan usage time after activation (the continuous usage time from fan activation to fan deactivation), and at least one of the following information at the time of fan activation: range hood lighting status (whether the range hood lights are on), and date information.

[0048] One of the fan shutdown data records includes: the smoke concentration value of the environment where the range hood is located when the fan is shut down, and at least one of the following related information: fan shutdown method (manual shutdown or automatic shutdown), at least one of the following information at the time of fan shutdown: range hood lighting status (whether the range hood lights are on), and date information.

[0049] Based on this, in step S102: the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy are updated according to the historical on / off fan data, including: preprocessing the historical on / off fan data to obtain training sample data; and using the training sample data to perform machine learning to update the on / off control strategy and the reference smoke concentration used by the on / off control strategy.

[0050] Specifically, the on / off control strategy can be a regression model. In some implementations, the step of preprocessing historical fan on / off data to obtain training sample data includes: acquiring scene data of the range hood; enhancing the correlation information of each data record in the historical fan on / off data based on the scene data to obtain enhanced fan on / off data corresponding to the historical fan on / off data; and classifying and labeling each data record in the enhanced fan on / off data according to the correlation information in that data record to form training sample data.

[0051] The scene data can be obtained via the network and / or locally from the range hood. The obtained scene data includes: date information, geographic location information, user information, and one or more weather conditions that may affect the accuracy of smoke concentration detection.

[0052] Specifically, for each data record in the enhanced on / off fan data, it is labeled based on the associated information in that data record, including labeling the data record with sample tags:

[0053] 1. For each fan start data record generated by the automatic start of the fan, mark the fan start data record with a positive sample label or a negative sample label according to the user's processing operation after the fan is automatically started;

[0054] Specifically, if the fan is automatically turned on based on the on / off control strategy, a data record will be generated. If a user manually turns off the fan within a preset time after the fan is automatically turned on, it indicates that the automatic fan turn-on decision was incorrect, and the fan-on data record will be marked with a negative sample label. If no user manually turns off the fan within a preset time after the fan is automatically turned on based on the on / off control strategy, it indicates that the automatic fan turn-on decision was correct, and the fan-on data record will be marked with a positive sample label.

[0055] 2. For each fan shutdown data record generated by the automatic shutdown of the fan, mark the fan shutdown data record with a positive sample label or a negative sample label according to the user's processing operation after the automatic shutdown of the fan;

[0056] Specifically, if the fan is automatically shut down based on the on / off control strategy, a fan shutdown data record will be generated. If, within a preset time after the fan automatically shuts down, a user's manual fan-on operation is detected, indicating that the automatic fan shutdown was incorrectly determined, the fan shutdown data record will be marked with a negative sample label. If, within a preset time after the fan is automatically shut down based on the on / off control strategy, no user's manual fan-on operation is detected, indicating that the automatic fan shutdown was correctly determined, the fan shutdown data record will be marked with a positive sample label.

[0057] 3. For each data record generated when a user manually turns on and / or turns off the fan, a positive sample label is marked.

[0058] After classifying and labeling each data record, training sample data is formed based on each data record and its sample label.

[0059] Unlike the above implementation method, preprocessing the historical fan switching data can involve directly labeling each data record in the historical fan switching data with a sample tag to obtain training sample data. The method of labeling each data record with a sample tag is the same as or similar to the above implementation method, and will not be repeated here for the sake of brevity.

[0060] The training sample data generated in the above manner is used to train the on / off control strategy, which uses only a single reference smoke concentration. That is, regardless of when, which person, or the weather changes, as long as the on / off control strategy is not updated, the on / off control strategy will use the same reference smoke concentration to compare with the actual smoke concentration of the environment where the range hood is located for a period of time in order to control the automatic start and stop of the range hood fan.

[0061] To further control the automatic start and stop of the range hood fan according to the user's personalized needs, the labeling of each data record includes not only the sample label, but also one or more of the following classification labels: personnel classification label, holiday classification label, location classification label, lighting status classification label, and time classification label; training sample data is formed based on each data record, its sample label, and various classification labels.

[0062] The training sample data is classified according to the classification label of each data record in the training sample data to obtain multiple sample datasets. Machine learning is then performed on each sample dataset to obtain multiple sub-reference smoke concentrations. These sub-reference smoke concentrations are used to compare with the actual smoke concentration of the range hood environment under different conditions (such as different operators, holidays, and different lighting conditions) to more accurately adapt to the user's personalized needs and control the automatic start and stop of the range hood fan.

[0063] Below, taking an example where the classification label for each data record only includes whether it is a holiday or not: the training sample data can be divided into a holiday sample dataset and a non-holiday sample dataset. The power on / off control strategy can be retrained using the holiday sample dataset and the non-holiday sample dataset respectively. The updated power on / off control strategy includes the first sub-reference smoke concentration corresponding to the holiday and the second sub-reference smoke concentration corresponding to the non-holiday. Based on the updated power on / off control strategy, the range hood fan can be automatically started and stopped on holidays based on the first sub-reference smoke concentration and the actual smoke concentration of the environment where the range hood is located, while on non-holidays, the range hood fan can be automatically started and stopped based on the second sub-reference smoke concentration and the actual smoke concentration of the environment where the range hood is located. Thus, the automatic start and stop of the range hood fan can be controlled more accurately.

[0064] Secondly, based on the same inventive concept, embodiments of the present invention provide a range hood on / off control device, see reference. Figure 2 As shown, it includes: a data acquisition unit 201, used to acquire historical fan switching data of the range hood, the historical fan switching data including smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off; a strategy update unit 202, used to update the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy according to the historical fan switching data; wherein, the on / off control strategy is used to control the automatic start and stop of the fan of the range hood according to the reference smoke concentration and the actual smoke concentration in the environment where the range hood is located.

[0065] In some implementations, it further includes: a strategy operation unit, used to run the power-on / off control strategy when the range hood enters automatic mode; and a start / stop control unit, used to control the automatic start / stop of the range hood fan according to the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located, under the control of the power-on / off control strategy.

[0066] In some implementations, the start / stop control unit includes: a smoke concentration monitoring subunit for monitoring the actual smoke concentration in the environment where the range hood is located; a start control unit for controlling the range hood fan to start if the range hood fan is in a stopped state and the actual smoke concentration is detected to reach the reference smoke concentration; and a stop control unit for controlling the range hood fan to shut down if the range hood fan is in a running state and the actual smoke concentration is detected to reach the reference smoke concentration.

[0067] In some implementations, a condition-triggered monitoring unit monitors whether a data update condition is triggered; a data acquisition unit 201 is used to execute the step of acquiring historical on / off fan data of the range hood each time a data update condition is triggered, so as to acquire new historical on / off data.

[0068] In some implementations, the smoke concentration data includes a first type of smoke concentration data when the fan is manually turned on and / or manually turned off; the strategy update unit 202 includes: an average calculation subunit, used to perform average processing on each smoke concentration value in the first type of smoke concentration data to obtain a target smoke concentration; and a replacement subunit, used to replace the reference smoke concentration currently used by the power-on / off control strategy with the target smoke concentration, so as to update the power-on / off control strategy and the reference smoke concentration used by the power-on / off control strategy.

[0069] In some implementations, the historical fan switching data includes multiple data records, and each data record includes the smoke concentration value of the environment where the range hood is located when the fan is turned on or off, and the associated information corresponding to the smoke concentration value; the strategy update unit 202 includes: a sample processing subunit, used to preprocess the historical fan switching data to obtain training sample data; and a machine learning subunit, used to perform machine learning using the training sample data to update the on / off control strategy and the reference smoke concentration used by the on / off control strategy.

[0070] In some implementations, the sample processing subunit includes: an enhancement processing module, used to acquire scene data of the range hood; enhance the association information of each data record in the historical fan switching data based on the scene data to obtain enhanced fan switching data; and a classification and labeling module, used to classify and label each data record in the enhanced fan switching data to form the training sample data.

[0071] In some implementations, the classification and labeling module is specifically used for: for each wind turbine start-up data record generated when the wind turbine automatically starts, labeling the wind turbine start-up data record with a positive or negative sample label based on the user processing operation after the wind turbine automatically starts; for each wind turbine shutdown data record generated when the wind turbine automatically shuts down, labeling the wind turbine shutdown data record with a positive or negative sample label based on the user processing operation after the wind turbine automatically shuts down; labeling each data record generated when the user manually starts and / or manually shuts down the wind turbine with a positive sample label; and forming the training sample data based on each data record and its sample label.

[0072] In some implementations, the classification tagging module is also specifically used to: for each data record, add one or more of the following classification tags based on the association information of the data record: personnel classification tag, whether it is a holiday classification tag, location classification tag, lighting status classification tag, and time classification tag; and form the training sample data based on each data record and the various classification tags of the data record.

[0073] In some implementations, each data record in the enhanced fan switching data includes: fan on data record and / or fan off data record; wherein, the fan on data record includes: when the fan is on, the smoke concentration value of the environment where the range hood is located, and at least one of the following related information: fan on-time, fan usage time after on-time, and at least one of the following information at the time the fan is on: range hood lighting status, date information, geographical location information, weather conditions information, personnel information, and holiday information; wherein, the fan off data record includes: when the fan is off, the smoke concentration value of the environment where the range hood is located, and at least one of the following related information: fan off-time, fan off-time, and at least one of the following information: range hood lighting status, date information, geographical location information, weather conditions information, personnel information, and holiday information.

[0074] The device embodiments described above can be used to execute the range hood on / off control method in the above embodiments of the present invention. For details not disclosed in the device embodiments described in the present invention, please refer to the above embodiments of the range hood on / off control method of the present invention.

[0075] Thirdly, based on the same inventive concept, embodiments of the present invention provide a range hood, see reference. Figure 3As shown, in this embodiment of the invention, the range hood includes one or more processors 302 and one or more memory 304. The one or more memory 304 stores at least one piece of program code. The at least one piece of program code is loaded and executed by the one or more processors 302 to implement the range hood on / off control method according to any embodiment of the first aspect.

[0076] Among them, Figure 3 In this document, a bus architecture (represented by bus 300) is used. Bus 300 may include any number of interconnected buses and bridges, linking various circuits including one or more processors represented by processor 302 and memory represented by memory 304. Bus 300 may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 305 provides an interface between bus 300 and receiver 301 and transmitter 303. Receiver 301 and transmitter 303 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 302 is responsible for managing bus 300 and general processing, while memory 304 can be used to store data used by processor 302 during operation.

[0077] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored as one or more instructions or codes on or transmitted via a computer-readable medium. Other examples and embodiments are within the scope and spirit of this invention and the appended claims. For example, due to the nature of software, the functions described above can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Furthermore, the functional units can be integrated into a single processing unit, or each unit can exist physically separately, or two or more units can be integrated into a single unit.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0079] The units described as separate components may or may not be physically separate. Similarly, the components serving as control devices may or may not be physical units; they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs. If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0080] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of the claims.

Claims

1. A method for controlling the on / off operation of a range hood, characterized in that, include: When the accuracy of the automatic start-stop of the range hood fan based on the start-stop control strategy and the reference smoke concentration used by the start-stop control strategy is lower than the preset accuracy threshold, the historical start-stop fan data of the range hood is obtained. The historical start-stop fan data includes the smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off. Based on the historical fan switching data, the on / off control strategy of the range hood and the reference smoke concentration used in the on / off control strategy are updated. The on / off control strategy is used to control the automatic start and stop of the range hood fan based on the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located.

2. The method as described in claim 1, characterized in that, Also includes: When the range hood enters automatic mode, the on / off control strategy is executed; Under the control of the on / off control strategy, the fan of the range hood is automatically started and stopped according to the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located.

3. The method as described in claim 2, characterized in that, The step of controlling the automatic start and stop of the range hood fan based on the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located includes: Monitor the actual smoke concentration in the environment where the range hood is located; If the range hood fan is stopped and the actual smoke concentration is detected to reach the reference smoke concentration, the range hood fan is controlled to turn on. If the range hood fan is running and the actual smoke concentration is detected to reach the reference smoke concentration, the range hood fan is controlled to shut down.

4. The method according to any one of claims 1-3, characterized in that, The smoke concentration data includes first-type smoke concentration data when the fan is manually turned on and / or manually turned off; The step of updating the range hood's on / off control strategy and the reference smoke concentration used in the on / off control strategy based on the historical fan switching data includes: The target smoke concentration is obtained by averaging the smoke concentration values ​​in the first type of smoke concentration data. The target smoke concentration is used to replace the reference smoke concentration currently used by the power-on / off control strategy, thereby updating the power-on / off control strategy and the reference smoke concentration used by the power-on / off control strategy.

5. The method according to any one of claims 1-3, characterized in that, The historical fan switching data includes multiple data records, and each data record includes the smoke concentration value of the environment where the range hood is located when the fan is turned on or off, as well as the associated information corresponding to the smoke concentration value. The step of updating the range hood's on / off control strategy and the reference smoke concentration used in the on / off control strategy based on the historical fan switching data includes: The historical on / off fan data is preprocessed to obtain training sample data; Machine learning is performed using the training sample data to update the power-on / off control strategy and the reference smoke concentration used by the power-on / off control strategy.

6. The method as described in claim 5, characterized in that, The preprocessing of the historical fan switching data to obtain training sample data includes: Obtain the scene data of the range hood; Based on the scenario data, the association information of each data record in the historical fan switching data is enhanced to obtain enhanced fan switching data; Each data record in the enhanced switching fan data is classified and labeled to form the training sample data.

7. The method as described in claim 6, characterized in that, The classification and labeling of each data record in the enhanced on / off fan data includes: For each wind turbine start-up data record generated at the moment the wind turbine automatically starts, the wind turbine start-up data record is marked with a positive sample label or a negative sample label according to the user processing operation after the wind turbine automatically starts; For each wind turbine shutdown data record generated at the moment of automatic wind turbine shutdown, the wind turbine shutdown data record is marked with a positive sample label or a negative sample label according to the user processing operation after the automatic shutdown of the wind turbine; Each data record generated when the user manually turns on and / or turns off the fan is marked with a positive sample label; The training sample data is formed based on each data record and its sample label.

8. The method as described in claim 7, characterized in that, The step of classifying and labeling each data record in the enhanced switching fan data to form the training sample data also includes: For each data record, add one or more of the following classification tags based on the associated information of that data record: personnel classification tag, holiday classification tag, location classification tag, lighting status classification tag, and time classification tag; The training sample data is formed based on each data record and its various classification labels.

9. The method as described in claim 8, characterized in that, Each data record in the enhanced switch fan data includes: fan start data record and / or fan stop data record; The fan start data record includes: the smoke concentration value of the environment where the range hood is located when the fan is turned on, and at least one of the following related information: fan start mode, fan start time, and at least one of the following information when the fan is turned on: range hood lighting status, date information, geographical location information, weather information, personnel information, and holiday information. The fan shutdown data record includes: the smoke concentration value of the environment where the range hood is located when the fan is shut down, and at least one of the following related information: fan shutdown method, fan shutdown time, at least one of the following: range hood lighting status, date information, geographical location information, weather information, personnel information, and holiday information.

10. A control device for switching on and off a tobacco hood, characterized in that, include: The data acquisition unit is used to acquire historical fan switching data of the range hood when the accuracy of the automatic start-stop of the fan of the range hood according to the start-stop control strategy and the reference smoke concentration used by the start-stop control strategy is lower than a preset accuracy threshold. The historical fan switching data includes smoke concentration data generated in the environment where the range hood is located when the fan is turned on and / or turned off. The strategy update unit is used to update the on / off control strategy of the range hood and the reference smoke concentration used by the on / off control strategy based on the historical on / off fan data. The on / off control strategy is used to control the automatic start and stop of the range hood fan based on the reference smoke concentration and the actual smoke concentration of the environment where the range hood is located.

11. A range hood, characterized in that, The method includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to implement the method as claimed in any one of claims 1-9.

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