Range hood gear adjusting method, device and equipment and storage medium

Abstract

The invention belongs to the technical field of intelligent household appliances, and particularly relates to a range hood gear adjusting method and device, equipment and a storage medium. The problem that in the prior art, the gear adjusting accuracy is low is solved. The method comprises the following steps: after the range hood is started, acquiring a plurality of first smoke concentrations acquired by a smoke concentration detection module; and then, according to the multiple first smoke concentrations and the smoke concentration interval corresponding to each gear, a target gear is determined, and the gear of the extractor hood is adjusted according to the target gear. Wherein a smoke concentration detection module is arranged at a volute of the range hood, the smoke concentration detection module comprises an infrared emitter and an infrared receiver, and the luminous intensity of the infrared emitter is configured as target luminous intensity, so that the recognition rate of the infrared receiver on infrared signals emitted by the infrared emitter is improved. According to the technical scheme, the gear adjusting accuracy is effectively improved.

Description

Technical Field

[0001] Embodiments of the present disclosure belong to the technical field of smart home appliances, and particularly relate to a method, device, equipment, and storage medium for adjusting the gear of an oil fume extractor. Background Art

[0002] In modern household kitchens, since an oil fume extractor can discharge a large amount of oil fume generated during cooking, improve the air quality in the kitchen, and reduce the deposition of oil fume, it occupies an important position among kitchen appliances.

[0003] Currently, the infrared detection principle can be used to identify the smoke concentration, so as to automatically adjust the gear of the oil fume extractor according to the identified smoke concentration. Specifically, when the oil fume extractor is working, the smoke concentration is measured in real time by an infrared sensor, and the gear of the oil fume extractor is controlled according to the smoke concentration collected in real time.

[0004] However, the existing method for adjusting the gear has low accuracy. Summary of the Invention

[0005] To solve the above problems in the prior art, that is, to solve the problem of low accuracy in adjusting the gear in the prior art, embodiments of the present disclosure provide a method, device, equipment, and storage medium for adjusting the gear of an oil fume extractor.

[0006] In a first aspect, embodiments of the present disclosure provide a method for adjusting the gear of an oil fume extractor. A smoke concentration detection module is provided at the volute of the oil fume extractor. The smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as a target luminous intensity to improve the recognition rate of the infrared signal emitted by the infrared emitter by the infrared receiver. The method includes:

[0007] After the oil fume extractor is powered on, obtain a plurality of first smoke concentrations collected by the smoke concentration detection module;

[0008] Determine a target gear according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear;

[0009] Adjust the gear of the oil fume extractor according to the target gear.

[0010] In a possible design, the determining the target gear according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear includes:

[0011] After the number of the first smoke concentrations reaches a first preset quantity, determine the average value of the first preset quantity of first smoke concentrations as a second smoke concentration;

[0012] Determine the target gear according to multiple second smoke concentrations and the smoke concentration range corresponding to each gear.

[0013] In a possible design, the determining the target gear according to multiple second smoke concentrations and the smoke concentration range corresponding to each gear includes:

[0014] For each second smoke concentration, subtract the background noise from the second smoke concentration to obtain a third smoke concentration;

[0015] After the number of third smoke concentrations reaches a second preset quantity, for the smoke concentration range corresponding to each gear, determine the target number of the second preset quantity of third smoke concentrations that fall within the smoke concentration range;

[0016] Among the gears where the target number is greater than a third preset quantity, determine the gear with the highest level as the target gear; where the level is positively correlated with the wind speed.

[0017] In a possible design, the adjusting the gear of the range hood according to the target gear includes:

[0018] If the target gear is greater than the current gear of the range hood, control the range hood to adjust to the target gear;

[0019] If the target gear is less than the current gear of the range hood, control the range hood to continue operating at the current gear and start timing;

[0020] Determine a new target gear according to multiple new first smoke concentrations newly collected by the smoke concentration detection module;

[0021] When the accumulated duration obtained by timing is less than a first preset duration, and the new target gear is greater than the current gear of the range hood, control the range hood to adjust to the new target gear;

[0022] When the accumulated duration is less than the first preset duration, and the new target gear is less than the current gear of the range hood, control the range hood to adjust to the new target gear;

[0023] When the accumulated duration is less than the first preset duration, and the new target gear is equal to the current gear of the range hood, restart the timing.

[0024] In a possible design, before the range hood is turned on, the method further includes:

[0025] After detecting that the shutdown duration of the range hood meets a second preset duration, obtain multiple first initial smoke concentrations collected by the smoke concentration detection module;

[0026] Determine the background noise after the range hood is turned on according to multiple first initial smoke concentrations collected by the smoke concentration detection module and the background noise when the range hood was last turned on.

[0027] In a possible design, before the range hood is turned on, the method further includes:

[0028] When it is detected that the range hood is powered on and is not in a working state within a third preset duration after being powered on, obtain multiple second initial smoke concentrations collected by the smoke concentration detection module;

[0029] Determine the average value of the multiple second initial smoke concentrations collected by the smoke concentration detection module as the background noise after the range hood is turned on;

[0030] When it is detected that the range hood is powered on and is in a working state within the third preset duration after being powered on, determine the preset background noise as the background noise after the range hood is turned on.

[0031] In a second aspect, an embodiment of the present disclosure provides a gear adjustment device for a range hood. A smoke concentration detection module is provided at the volute of the range hood. The smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as a target luminous intensity to improve the recognition rate of the infrared signal emitted by the infrared emitter by the infrared receiver. The device includes:

[0032] An acquisition module, configured to acquire multiple first smoke concentrations collected by the smoke concentration detection module after the range hood is turned on;

[0033] A determination module, configured to determine a target gear according to the multiple first smoke concentrations and the smoke concentration interval corresponding to each gear;

[0034] An adjustment module, configured to adjust the gear of the range hood according to the target gear.

[0035] In a possible design, the determination module is specifically configured to:

[0036] After the number of the first smoke concentrations reaches a first preset quantity, determine the average value of the first preset quantity of first smoke concentrations as the second smoke concentration;

[0037] Determine the target gear according to multiple second smoke concentrations and the smoke concentration interval corresponding to each gear.

[0038] In a possible design, the determination module is specifically configured to:

[0039] For each second smoke concentration, subtract the background noise from the second smoke concentration to obtain a third smoke concentration;

[0040] After the number of third smoke concentrations reaches a second preset quantity, for each smoke concentration range corresponding to each gear, determine the target number of the second preset quantity of third smoke concentrations that fall within the smoke concentration range;

[0041] Among the gears where the target number is greater than a third preset quantity, determine the gear with the highest level as the target gear; where the level is positively correlated with the wind speed.

[0042] In a possible design, the adjustment module is specifically configured to:

[0043] If the target gear is greater than the current gear of the range hood, control the range hood to adjust to the target gear;

[0044] If the target gear is less than the current gear of the range hood, control the range hood to continue operating at the current gear and start timing;

[0045] Determine a new target gear according to a plurality of new first smoke concentrations newly collected by the smoke concentration detection module;

[0046] When the cumulative duration obtained by timing is less than a first preset duration, and the new target gear is greater than the current gear of the range hood, control the range hood to adjust to the new target gear;

[0047] When the cumulative duration is less than the first preset duration, and the new target gear is less than the current gear of the range hood, control the range hood to adjust to the new target gear;

[0048] When the cumulative duration is less than the first preset duration, and the new target gear is equal to the current gear of the range hood, re-start timing.

[0049] In a possible design, before the range hood is turned on, the acquisition module is further configured to, after detecting that the shutdown duration of the range hood meets a second preset duration, acquire a plurality of first initial smoke concentrations collected by the smoke concentration detection module;

[0050] The determination module is further configured to determine the background noise after the range hood is turned on according to the plurality of first initial smoke concentrations collected by the smoke concentration detection module and the background noise when the range hood was last turned on.

[0051] In a possible design, before the range hood is turned on, the obtaining module is further configured to, when it is detected that the range hood is powered on and is not in a working state within a third preset duration after power-on, obtain a plurality of second initial smoke concentrations collected by the smoke concentration detection module;

[0052] The determining module is further configured to determine the average value of the plurality of second initial smoke concentrations collected by the smoke concentration detection module as the background noise after the range hood is turned on;

[0053] The determining module is further configured to, when it is detected that the range hood is powered on and is in a working state within the third preset duration after power-on, determine a preset background noise as the background noise after the range hood is turned on.

[0054] In a third aspect, an embodiment of the present disclosure provides an electronic device, including: a processor, a memory, and computer program instructions stored on the memory and executable on the processor, where when the processor executes the computer program instructions, it is used to implement the methods provided in the first aspect and each possible design.

[0055] In a fourth aspect, an embodiment of the present disclosure may provide a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, they are used to implement the methods provided in the first aspect and each possible design.

[0056] In a fifth aspect, an embodiment of the present disclosure provides a computer program product, including a computer program, where when the computer program is executed by a processor, it is used to implement the methods provided in the first aspect and each possible design.

[0057] Those skilled in the art can understand that an embodiment of the present disclosure provides a method, device, equipment, and storage medium for adjusting the range hood gears. In this method, after the range hood is turned on, a plurality of first smoke concentrations collected by the smoke concentration detection module are obtained. Then, according to the plurality of first smoke concentrations and the smoke concentration interval corresponding to each gear, a target gear is determined, and the gear of the range hood is adjusted according to the target gear. Among them, a smoke concentration detection module is provided at the volute of the range hood, and the smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as a target luminous intensity to improve the recognition rate of the infrared signal emitted by the infrared emitter by the infrared receiver. In this technical solution, the smoke concentration detection module can effectively identify small-diameter and small-number smoke particles, determine the target gear according to the smoke concentration collected by the smoke concentration detection module, and thus adjust the range hood according to the target gear, effectively improving the accuracy of gear adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present disclosure, and are used together with the specification to explain the principles of the present disclosure.

[0059] Figure 1 Schematic structural diagram of the smoke concentration detection module provided for an embodiment of the present disclosure;

[0060] Figure 2 Schematic flow diagram of the first embodiment of the gear adjustment method for a range hood provided for an embodiment of the present disclosure;

[0061] Figure 3 Schematic flow diagram of the second embodiment of the gear adjustment method for a range hood provided for an embodiment of the present disclosure;

[0062] Figure 4 Schematic structural diagram of the gear adjustment device for a range hood provided for an embodiment of the present disclosure;

[0063] Figure 5 Schematic structural diagram of the electronic device provided for an embodiment of the present disclosure.

[0064] Through the above-mentioned accompanying drawings, specific embodiments of the present disclosure have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concept of the present disclosure to those skilled in the art by referring to specific embodiments. Detailed embodiments

[0065] First of all, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present disclosure and are not intended to limit the protection scope of the present disclosure. Those skilled in the art can make adjustments according to needs to adapt to specific application scenarios.

[0066] Secondly, it should be noted that in the description of the embodiments of the present disclosure, terms such as "inner" and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present disclosure.

[0067] In addition, it should also be noted that in the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific situations.

[0068] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0069] Before introducing the embodiments of the present disclosure, first, the application background of the embodiments of the present disclosure will be explained:

[0070] In modern household kitchens, range hoods occupy an important position. Range hoods can discharge a large amount of oil fumes generated during cooking, improve the air quality in the kitchen, protect the physical health of family members, reduce the deposition of oil fumes, ensure the comfort and cleanliness of the kitchen environment. At the same time, range hoods can significantly reduce the accumulation of grease in the cooking area, reduce the hidden danger of fire, and improve the safety of the kitchen.

[0071] In practical applications, the amount of oil fumes generated in different cooking scenarios is different. For example, the amount of oil fumes generated during stewing is small, while the amount of oil fumes generated during stir-frying is large. Therefore, during actual use, it is necessary to adjust the gear of the range hood according to the amount of oil fumes generated during cooking.

[0072] Currently, gear buttons are provided on the control panel of the range hood, and the gear buttons can be push-button type, touch type, or rotary type. Users can manually adjust the gear buttons according to the actual oil fumes generated during cooking to adjust the wind speed of the range hood.

[0073] However, in the above method, due to limited human energy, it is easy to forget to adjust the gear of the range hood when concentrating on cooking. At the same time, when the amount of oil fumes is small, in order to ensure a better smoke exhaust effect, users will turn the range hood to a high gear, resulting in excessive energy consumption and affecting the service life of the range hood. That is to say, there is a problem of low accuracy in the way of manually adjusting the gear of the range hood.

[0074] With the development of technology, the intelligence of household appliances is increasingly needed by people. As a main kitchen appliance, the range hood also needs to improve its intelligence level in the kitchen intelligent scenario to match the user scenario requirements.

[0075] Based on this, the prior art proposes that the smoke concentration can be identified through the infrared detection principle, so as to automatically adjust the gear of the range hood according to the identified smoke concentration. Specifically, when the range hood is working, the infrared sensor measures and collects the smoke concentration in real time, and controls the gear of the range hood according to the smoke concentration collected in real time.

[0076] However, under different working conditions, the number and diameter of smoke particles generated during cooking are different. In the working conditions where the number of smoke particles is small and the diameter of smoke particles is small, it is difficult to detect the smoke concentration in this condition, and the smoke concentration is not easy to identify, resulting in a low accuracy of subsequent gear adjustment of the range hood.

[0077] In view of the above problems, during the research on the infrared sensor in the present disclosure, it is found that the luminous intensity of the infrared emitter can affect the recognition accuracy of the smoke concentration. The greater the luminous intensity, the easier it is for the infrared receiver to recognize and capture the infrared signal. Therefore, before controlling the gear of the range hood, the luminous intensity of the infrared emitter can be pre-adjusted to a higher level, so as to improve the recognition effect of the smoke concentration in the working conditions where the number of smoke particles is small and the diameter of smoke particles is small, and further improve the accuracy of adjusting the gear of the range hood according to the recognized smoke concentration.

[0078] Next, the structure of the smoke concentration detection module for collecting the smoke concentration will be explained.

[0079] Figure 1 It is a schematic structural diagram of the smoke concentration detection module provided by the embodiments of the present disclosure. As Figure 1 shown, the smoke concentration detection module includes: a connection line 101, a rear cover 102, a metal shielding cover 103, a printed circuit board (Printed Circuit Board Assembly, PCBA) 104, an infrared emitter 105, an infrared receiver 106, a main structural member 107, a convex lens 108, a light-transmitting hole bracket 109, a protective lens 110, a light guide bracket 111, an oil-proof grille 112, an oil-proof grille 113, and a fixed base 114.

[0080] Among them, the convex lens 108 is installed on the optical path where the infrared receiver 106 and the infrared emitter 105 are located, helping to concentrate and focus the infrared rays emitted by the infrared emitter 105, making it easier to be received by the infrared receiver 106, thereby improving the accuracy of smoke concentration recognition for smoke particles with a smaller diameter or a smaller number.

[0081] Among them, the infrared receiver 106 and the infrared emitter 105 are soldered on the PCBA 104, and the luminous intensity of the infrared emitter 105 is configured as a target luminous intensity, and the target luminous intensity is the luminous intensity allowed by a larger infrared emitter 105, so as to improve the recognition rate of the infrared signal emitted by the infrared emitter 105 by the infrared receiver 106.

[0082] Among them, the metal shielding cover 103 is arranged on the back of the PCBA 104, strengthening the electromagnetic interference shielding and improving the receiving sensitivity.

[0083] Next, the technical solutions of the present disclosure will be described in detail through specific embodiments.

[0084] It should be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0085] Figure 2 FIG. is a schematic flowchart of Embodiment 1 of the gear adjustment method for a range hood provided by an embodiment of the present disclosure. As Figure 2 shown, the gear adjustment method for the range hood may include the following steps:

[0086] S21. After the range hood is turned on, obtain a plurality of first smoke concentrations collected by the smoke concentration detection module.

[0087] The execution subject of the embodiment of the present disclosure is an electronic device, which may be a terminal device, such as a mobile phone, a tablet computer, a notebook computer, etc., may be a server, or may be a range hood. In practical applications, whether the electronic device is specifically a terminal device, a server, or a range hood can be determined according to actual situations, and the present disclosure does not make specific limitations in this regard.

[0088] In this step, the smoke concentration detection module is arranged at the volute of the range hood, and the specific structure of the smoke concentration detection module can refer to Figure 1 the content shown, which will not be elaborated here.

[0089] Among them, the luminous intensity of the infrared emitter in the smoke concentration detection module is configured as a target luminous intensity, and the target luminous intensity is the luminous intensity allowed by a larger infrared emitter, so as to improve the recognition rate of the infrared receiver for the infrared signal emitted by the infrared emitter. Exemplarily, the target luminous intensity may be the maximum luminous intensity allowed by the infrared emitter.

[0090] In practical applications, the range hood and the electronic device can communicate with each other in a wired or wireless manner, so that the electronic device can determine the working state of the range hood. After the electronic device determines that the range hood is turned on, it can control the smoke concentration detection module to start collecting the smoke concentration.

[0091] S22. Determine the target gear according to the plurality of first smoke concentrations and the smoke concentration interval corresponding to each gear.

[0092] In this step, the smoke concentration detection module continuously collects the smoke concentration at the volute according to a preset collection frequency, so as to obtain a plurality of consecutive first smoke concentrations. Further, since different smoke concentrations require different gears for smoke exhaust, after determining the plurality of first smoke concentrations, the target gear at which the range hood should operate at this time can be determined.

[0093] In a specific implementation, a smoke concentration range can be pre-configured for each gear of the range hood. According to the smoke concentration range in which each of the multiple first smoke concentrations is located, the target gear corresponding to the multiple first smoke concentrations is determined.

[0094] It should be understood that the specific implementation principle and process of this step will be Figure 3 explained in detail in the embodiments shown below and will not be specifically explained here.

[0095] S23. Adjust the gear of the range hood according to the target gear.

[0096] In this step, if the target gear is different from the current gear of the range hood, the gear of the range hood needs to be adjusted according to the target gear.

[0097] In a possible implementation, if the target gear is different from the current gear of the range hood, the gear of the range hood is directly adjusted to the target gear.

[0098] In practical applications, considering that if the gear of the range hood is adjusted every time the target gear is determined, there will be a problem of frequent gear shifting, which will affect the user's cooking experience. To solve the above problem, the gear of the range hood can also be adjusted differently according to different situations. The specific adjustment methods can be referred to the following content.

[0099] Situation 1

[0100] If the target gear is greater than the current gear of the range hood, control the range hood to adjust to the target gear.

[0101] In Situation 1, since the target gear is greater than the current gear of the range hood, it means that the smoke concentration is relatively high at this time and a larger air volume is required to exhaust. That is to say, among solving the smoke exhaust problem and solving the gear shifting problem, the priority of the smoke exhaust problem is higher. Therefore, it is necessary to control the range hood to adjust to the target gear to meet the smoke emission requirements.

[0102] Situation 2

[0103] If the target gear is less than the current gear of the range hood, control the range hood to continue running at the current gear and start timing. According to the multiple new first smoke concentrations newly collected by the smoke concentration detection module, determine the new target gear.

[0104] In Case 2, since the target speed is lower than the current speed of the range hood, it indicates that the smoke concentration is relatively low at this time. If the speed of the range hood is directly adjusted to the lower target speed at this time, although the current requirement for discharging the smoke concentration is met, there is a problem of frequent gear shifting. Therefore, the range hood can be controlled to continue operating at the current speed for a period of time, and a new target speed is re-determined. Then, the speed of the range hood is adjusted according to the new target speed.

[0105] In Case 2, according to the relationship between the new target speed and the current speed, it is further divided into the following three cases.

[0106] Case a

[0107] When the cumulative duration obtained by timing is less than the first preset duration and the new target speed is higher than the current speed of the range hood, the range hood is controlled to be adjusted to the new target speed.

[0108] Optionally, the first preset duration can be 5 seconds, 6 seconds, 7 seconds, etc. It should be understood that the specific value of the first preset duration can be preset according to the actual situation, and the embodiments of the present disclosure do not specifically limit this.

[0109] In Case a, since the new target speed is higher than the current speed of the range hood, it indicates that the smoke concentration is relatively high at this time, and a larger air volume is required for discharge. Therefore, the range hood needs to be controlled to be adjusted to the new target speed to meet the emission requirement of the oil fume.

[0110] Case b

[0111] When the cumulative duration is less than the first preset duration and the new target speed is lower than the current speed of the range hood, the range hood is controlled to be adjusted to the new target speed.

[0112] In Case b, since the new target speed is lower than the current speed of the range hood, it indicates that the smoke exhaust requirement of the range hood is relatively low during the cumulative duration. If a higher speed is still used for smoke exhaust, there are problems of relatively high noise and relatively high power consumption. Therefore, the range hood needs to be controlled to be adjusted to the new target speed.

[0113] Case c

[0114] When the cumulative duration is less than the first preset duration and the new target speed is equal to the current speed of the range hood, re-timing is performed.

[0115] In Case c, since the new target speed is equal to the current speed of the range hood, it indicates that the current speed meets the actual cooking requirement. Then, re-timing is performed, and a new target speed is recalculated again.

[0116] The gear adjustment method of the range hood provided by the embodiments of the present disclosure, after the range hood is powered on, obtains a plurality of first smoke concentrations collected by the smoke concentration detection module. Then, according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear, determines the target gear, and adjusts the gear of the range hood according to the target gear. Among them, a smoke concentration detection module is provided at the volute of the range hood, and the smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as the target luminous intensity to improve the recognition rate of the infrared signal emitted by the infrared emitter by the infrared receiver. In this technical solution, the smoke concentration detection module can effectively identify smoke particles with small diameters and small quantities, determines the target gear according to the smoke concentration collected by the smoke concentration detection module, and thus adjusts the range hood according to the target gear, effectively improving the accuracy of gear adjustment.

[0117] Figure 3 It is a schematic flowchart of the second embodiment of the gear adjustment method of the range hood provided by the embodiments of the present disclosure. As Figure 3 shown, S22 can be implemented through the following steps:

[0118] S31. After the number of the first smoke concentrations reaches the first preset quantity, determines the average value of the first preset quantity of the first smoke concentrations as the second smoke concentration.

[0119] Exemplarily, the first preset quantity can be 5, 6, 7, etc. It should be understood that the specific value of the first preset quantity can be determined in advance according to the actual situation, and the embodiments of the present disclosure do not specifically limit this.

[0120] S32. Determines the target gear according to the plurality of second smoke concentrations and the smoke concentration range corresponding to each gear.

[0121] In a possible implementation manner, for each second smoke concentration, subtracts the background noise from the second smoke concentration to obtain the third smoke concentration. Then, after the number of the third smoke concentrations reaches the second preset quantity, for the smoke concentration range corresponding to each gear, determines the target number of the second preset quantity of the third smoke concentrations that are within the smoke concentration range. Finally, among the gears with the target number greater than the third preset quantity, determines the gear with the highest level as the target gear.

[0122] Among them, the level is positively correlated with the wind speed.

[0123] Exemplarily, the second preset quantity can be 20, 25, 30, etc. It should be understood that the specific value of the first preset quantity can be determined in advance according to the actual situation, and the embodiments of the present disclosure do not specifically limit this.

[0124] Correspondingly, the third preset quantity may be 12, 16, 21, etc. It should be understood that the specific value of the first preset quantity can be determined in advance according to the actual situation, and the embodiments of the present disclosure do not specifically limit this.

[0125] It should be understood that the background noise can be determined before the range hood is turned on, and the second smoke concentration is subtracted from the background noise to reduce the influence of the environment.

[0126] Next, through a specific example, this embodiment will be explained.

[0127] Obtain the first smoke concentration collected by the smoke concentration detection module, and perform a moving average filter on 5 values to obtain the second smoke concentration. Then, calculate the third smoke concentration according to the following formula:

[0128] Third smoke concentration = Second smoke concentration - Background noise

[0129] After that, save 20 third smoke concentrations in the form of a queue, first in first out. For each smoke concentration interval corresponding to each gear, if more than 12 third smoke concentrations are in this smoke concentration interval, then determine this gear as the target gear.

[0130] Exemplarily, the smoke concentration thresholds for different gears can refer to the following content:

[0131] value < Threshold 1, gear 0;

[0132] Threshold 1 ≤ value < Threshold 3, gear 1;

[0133] Threshold 3 ≤ value < Threshold 4, gear 3;

[0134] Threshold 4 ≤ value, gear 4;

[0135] Where value is the smoke concentration.

[0136] In a possible implementation manner, if the threshold data received from the whole machine satisfies: 0 < Threshold 1 < Threshold 3 < Threshold 4 < 10000, then use this threshold data as the algorithm judgment threshold. Otherwise, use the default threshold: Threshold 1 = 260, Threshold 3 = 2000, Threshold 4 = 5500.

[0137] After that, generate a corresponding gear adjustment signal according to the size relationship between the target gear and the current gear. Specifically, if the target gear is greater than the current gear, then generate a gear up signal; if the target gear is less than the current gear, then generate a gear down signal.

[0138] Among them, in the gear shifting signal, the higher gear has priority over the lower gear. Exemplarily, assume that two upshift signals are generated. The target gear of upshift signal 1 is the first gear, and the target gear of upshift signal 2 is the third gear. Since the third gear is greater than the first gear, upshift signal 2 has priority over upshift signal 1. Subsequently, it is necessary to adjust the gear of the range hood according to upshift signal 2.

[0139] For the upshift signal, the range hood is directly adjusted to the target gear corresponding to the upshift signal according to the upshift signal.

[0140] For the downshift signal, a delay of 5 s is set. If there is an upshift signal within 5 s, the gear of the range hood is raised to the target gear corresponding to the downshift signal; if there is a same-gear signal, the delay timing is initialized; in other cases, downshift.

[0141] In practical applications, when the background noise is relatively large, it indicates that there may be a fault in the smoke concentration detection module, or some components (such as the infrared receiver) are blocked by oil fumes, and the accuracy of the collected smoke concentration is relatively low. Therefore, when adjusting the gear of the range hood, it is also necessary to correct the adjustment result.

[0142] For example, assume that the background noise > 1000, then the judgment of shifting to the fourth gear is not executed; if the background noise > 3000, then no gear shifting signal is output.

[0143] In the above embodiment, a smoke concentration range corresponding to each gear is preset in advance. The average of the first preset number of first smoke concentrations collected is calculated, and the background noise is removed to obtain the third smoke concentration. Then, based on the smoke concentration range in which the multiple third smoke concentrations are located, the target gear is determined.

[0144] Optionally, in some embodiments, before the range hood is turned on, it is also necessary to determine the background noise after the range hood is turned on.

[0145] Method 1

[0146] After it is detected that the shutdown duration of the range hood satisfies the second preset duration, a plurality of first initial smoke concentrations collected by the smoke concentration detection module are obtained. Then, based on the plurality of first initial smoke concentrations collected by the smoke concentration detection module and the background noise when the range hood was last turned on, the background noise after the range hood is turned on is determined.

[0147] In Method 1, the electronic device is deployed with an Electrically Erasable Programmable Read Only Memory (EEPROM). Exemplarily, after the range hood is turned off (the signal is sent by the whole machine) for 2 hours, data (the first initial smoke concentration) is continuously collected for 1 minute, and the background noise after the range hood is turned on is calculated by means of first-order lag filtering. Exemplarily, the background noise after the range hood is turned on can be calculated by the following method:

[0148] The background noise after the range hood is turned on = the first initial smoke concentration × 0.1 + the background noise when the range hood was last turned on × 0.9

[0149] It should be understood that if the above background noise collection conditions are not met, the background noise when the range hood was last turned on is directly used as the background noise after this turn-on. The background noise collection condition is that the range hood is turned off for 2 hours.

[0150] Method 2

[0151] When it is detected that the range hood is powered on and is not in the working state within the third preset time period after power-on, multiple second initial smoke concentrations collected by the smoke concentration detection module are obtained. Then, the average value of the multiple second initial smoke concentrations collected by the smoke concentration detection module is determined as the background noise after the range hood is turned on; when it is detected that the range hood is powered on and is in the working state within the third preset time period after power-on, the preset background noise is determined as the background noise after the range hood is turned on.

[0152] In Method 2, the electronic device is not deployed with EEPROM. Wait for 3 seconds each time it is powered on. If the range hood is not in the working state, the second initial smoke concentration is collected in the subsequent 5s, and the average value is taken as the background noise after the range hood is turned on; if the range hood is turned on during the 5s, the preset background noise is taken as the background noise after the range hood is turned on.

[0153] Exemplarily, the preset background noise can be 50.

[0154] In this embodiment, when the electronic device is deployed with EEPROM, the first initial smoke concentration can be collected and the background noise can be determined after the range hood is turned off for a period of time. Since the shutdown time is relatively long, it can be ensured that the first initial smoke concentration collected at this time is the smoke concentration in the environment, thereby ensuring higher accuracy in determining the background noise. When the electronic device is deployed with EEPROM, the background noise can be determined after the range hood is powered on.

[0155] Based on the smoke exhaust hood gear method shown in any of the above embodiments, experiments were conducted. By measuring the diameter and quantity of smoke particles, it was found that under different working conditions, the diameter and quantity of smoke particles were different; when the diameter of smoke particles was less than 1 um, they were not easily identifiable; when the quantity of smoke particles was less than 400,000, they were not easily identifiable; the diameter and quantity of smoke particles were collected under various working conditions.

[0156] Specifically, the diameter and quantity of smoke particles generated by different types of cooking oils were collected; the diameter and quantity of smoke particles generated by different oil-water ratios were collected; the diameter and quantity of water vapor smoke particles. Then, in the above working conditions, it was determined whether the prior art and the present disclosure could identify smoke particles.

[0157] Exemplarily, the specific experimental data can be represented by Table 1.

[0158] Table 1

[0159] Referring to Table 1, it can be seen that the present disclosure can effectively improve the recognition accuracy of smoke particles.

[0160] The following is an embodiment of the device of the present disclosure, which can be used to execute the method embodiment of the present disclosure. For the details not disclosed in the device embodiment of the present disclosure, please refer to the method embodiment of the present disclosure.

[0161] Figure 4 It is a schematic structural diagram of the gear adjustment device of the smoke exhaust hood provided by the embodiment of the present disclosure. As Figure 4 shown, a smoke concentration detection module is provided at the volute of the smoke exhaust hood. The smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as the target luminous intensity to improve the recognition rate of the infrared receiver for the infrared signal emitted by the infrared emitter. The gear adjustment device 40 of the smoke exhaust hood includes:

[0162] An acquisition module 41, configured to acquire a plurality of first smoke concentrations collected by the smoke concentration detection module after the smoke exhaust hood is turned on.

[0163] A determination module 42, configured to determine a target gear according to the plurality of first smoke concentrations and the smoke concentration interval corresponding to each gear.

[0164] An adjustment module 43, configured to adjust the gear of the smoke exhaust hood according to the target gear.

[0165] In a possible design, the determination module 42 is specifically configured to:

[0166] After the number of the first smoke concentrations reaches the first preset quantity, the average value of the first preset quantity of the first smoke concentrations is determined as the second smoke concentration.

[0167] Based on multiple second smoke concentrations and the smoke concentration range corresponding to each gear, the target gear is determined.

[0168] In a possible design, the determination module 42 is specifically configured to:

[0169] For each second smoke concentration, subtract the background noise from the second smoke concentration to obtain the third smoke concentration.

[0170] After the number of the third smoke concentrations reaches the second preset quantity, for the smoke concentration range corresponding to each gear, determine the target number of the second preset quantity of the third smoke concentrations that are within the smoke concentration range.

[0171] Among the gears where the target number is greater than the third preset quantity, the one with the highest level is determined as the target gear. Wherein, the level is positively correlated with the wind speed.

[0172] In a possible design, the adjustment module 43 is specifically configured to:

[0173] If the target gear is greater than the current gear of the range hood, control the range hood to adjust to the target gear.

[0174] If the target gear is less than the current gear of the range hood, control the range hood to continuously operate at the current gear and start timing.

[0175] Based on multiple new first smoke concentrations newly collected by the smoke concentration detection module, determine the new target gear.

[0176] When the accumulated duration obtained by timing is less than the first preset duration and the new target gear is greater than the current gear of the range hood, control the range hood to adjust to the new target gear.

[0177] When the accumulated duration is less than the first preset duration and the new target gear is less than the current gear of the range hood, control the range hood to adjust to the new target gear.

[0178] When the accumulated duration is less than the first preset duration and the new target gear is equal to the current gear of the range hood, restart the timing.

[0179] In a possible design, before the range hood is turned on, the acquisition module 41 is further configured to, after detecting that the shutdown duration of the range hood meets the second preset duration, acquire multiple first initial smoke concentrations collected by the smoke concentration detection module.

[0180] The determination module 42 is further configured to determine the background noise after the range hood is turned on according to multiple first initial smoke concentrations collected by the smoke concentration detection module and the background noise when the range hood was last turned on.

[0181] In a possible design, before the range hood is turned on, the acquisition module 41 is further configured to, when it is detected that the range hood is powered on and is not in a working state within a third preset duration after being powered on, acquire multiple second initial smoke concentrations collected by the smoke concentration detection module.

[0182] The determination module 42 is further configured to determine the average value of multiple second initial smoke concentrations collected by the smoke concentration detection module as the background noise after the range hood is turned on.

[0183] The determination module 42 is further configured to, when it is detected that the range hood is powered on and is in a working state within a third preset duration after being powered on, determine the preset background noise as the background noise after the range hood is turned on.

[0184] The range hood gear adjustment device provided by the embodiments of the present disclosure can be used to execute the range hood gear adjustment method in any of the above embodiments. Its implementation principle and technical effects are similar and will not be elaborated here.

[0185] It should be noted that it should be understood that the division of each module of the above device is only a logical function division. In actual implementation, it can be fully or partially integrated into a physical entity, or physically separated. And these modules can all be implemented in the form of software called by a processing element; they can also all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. In addition, all or part of these modules can be integrated together or independently implemented. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the integrated logic circuit in the processor element or the instruction in the form of software.

[0186] Figure 5 It is a schematic structural diagram of an electronic device provided by the embodiments of the present disclosure. As Figure 5 shown, the electronic device may include: a processor 51, a memory 52, and computer program instructions stored on the memory 52 and executable on the processor 51. When the processor 51 executes the computer program instructions, it implements the range hood gear adjustment method provided in any of the foregoing embodiments.

[0187] Optionally, the electronic device may further include an interface for interacting with other devices.

[0188] Optionally, the above-mentioned various components of the electronic device may be connected through a system bus.

[0189] The memory 52 can be a separate storage unit or a storage unit integrated in the processor. The number of processors is one or more.

[0190] It should be understood that the processor 51 can be a Central Processing Unit (CPU), or other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the method disclosed in conjunction with the present disclosure can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

[0191] The system bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The system bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience in representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The memory may include a Random Access Memory (RAM), and may also include a non-volatile memory (NVM), such as at least one disk memory.

[0192] All or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a readable memory. When the program is executed, it executes the steps including the above method embodiments; and the foregoing memory (storage medium) includes: Read-Only Memory (ROM), RAM, flash memory, hard disk, solid state drive, magnetic tape, floppy disk, optical disc, and any combination thereof.

[0193] The electronic device provided in the embodiments of the present disclosure can be used to execute the gear adjustment method of the range hood provided in any of the above method embodiments. The implementation principle and technical effects are similar and will not be elaborated here.

[0194] An embodiment of the present disclosure provides a computer-readable storage medium storing computer instructions, which, when running on a computer, cause the computer to execute the above-mentioned gear adjustment method of the range hood.

[0195] The above-mentioned computer-readable storage medium may be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory, electrically erasable programmable read-only memory, erasable programmable read-only memory, programmable read-only memory, read-only memory, magnetic memory, flash memory, a magnetic disk or an optical disc. The readable storage medium may be any available medium accessible by a general-purpose or special-purpose computer.

[0196] Optionally, the readable storage medium is coupled to the processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium may also be a component of the processor. The processor and the readable storage medium may be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium may also exist as discrete components in a device.

[0197] An embodiment of the present disclosure further provides a computer program product including a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium, and when the at least one processor executes the computer program, the above-mentioned gear adjustment method of the range hood can be implemented.

[0198] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not intended to limit them. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A method for adjusting the speed of an oil fume extractor, characterized in that, A smoke concentration detection module is provided at the volute of the range hood. The smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as a target luminous intensity to improve the recognition rate of the infrared receiver for the infrared signal emitted by the infrared emitter. The method includes: After the range hood is turned on, obtain a plurality of first smoke concentrations collected by the smoke concentration detection module; Determine a target gear according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear; Adjust the gear of the range hood according to the target gear.

2. The method according to claim 1, wherein The determining the target gear according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear includes: After the number of the first smoke concentrations reaches a first preset number, determine the average value of the first smoke concentrations of the first preset number as the second smoke concentration; Determine the target gear according to the plurality of second smoke concentrations and the smoke concentration range corresponding to each gear.

3. The method according to claim 2, wherein The determining the target gear according to the plurality of second smoke concentrations and the smoke concentration range corresponding to each gear includes: For each second smoke concentration, subtract the background noise from the second smoke concentration to obtain a third smoke concentration; After the number of the third smoke concentrations reaches a second preset number, for the smoke concentration range corresponding to each gear, determine the target number of the second preset number of third smoke concentrations that are within the smoke concentration range; Among the gears with the target number greater than a third preset number, determine the gear with the highest level as the target gear; wherein, the level is positively correlated with the wind speed.

4. The method according to any one of claims 1 to 3, characterized in that, The adjusting the gear of the range hood according to the target gear includes: If the target gear is greater than the current gear of the range hood, control the range hood to adjust to the target gear; If the target gear is less than the current gear of the range hood, control the range hood to continue running at the current gear and start timing; Determine a new target gear according to a plurality of new first smoke concentrations newly collected by the smoke concentration detection module; When the accumulated time obtained by timing is less than a first preset time and the new target gear is greater than the current gear of the range hood, control the range hood to adjust to the new target gear; When the accumulated time is less than the first preset time and the new target gear is less than the current gear of the range hood, control the range hood to adjust to the new target gear; When the accumulated time is less than the first preset time and the new target gear is equal to the current gear of the range hood, restart the timing.

5. The method according to claim 2, characterized in that Before the range hood is turned on, the method further includes: After detecting that the shutdown duration of the range hood meets a second preset time, obtain a plurality of first initial smoke concentrations collected by the smoke concentration detection module; Determine the background noise after the range hood is turned on according to the plurality of first initial smoke concentrations collected by the smoke concentration detection module and the background noise when the range hood was last turned on.

6. The method according to claim 2, characterized in that, characterized in that, Before the range hood is turned on, the method further includes: When it is detected that the range hood is powered on and is not in a working state within the third preset time period after power-on, a plurality of second initial smoke concentrations collected by the smoke concentration detection module are obtained; The average value of the plurality of second initial smoke concentrations collected by the smoke concentration detection module is determined as the background noise after the range hood is turned on; When it is detected that the range hood is powered on and is in a working state within the third preset time period after power-on, the preset background noise is determined as the background noise after the range hood is turned on.

7. A gear adjustment device for an oil fume suction machine, characterized in that, A smoke concentration detection module is provided at the volute of the range hood. The smoke concentration detection module includes an infrared emitter and an infrared receiver. The luminous intensity of the infrared emitter is configured as a target luminous intensity to improve the recognition rate of the infrared receiver for the infrared signal emitted by the infrared emitter. The device includes: An acquisition module, configured to acquire a plurality of first smoke concentrations collected by the smoke concentration detection module after the range hood is turned on; A determination module, configured to determine a target gear according to the plurality of first smoke concentrations and the smoke concentration range corresponding to each gear; An adjustment module, configured to adjust the gear of the range hood according to the target gear.

8. An electronic device, comprising: A processor, a memory, and computer program instructions stored on the memory and executable on the processor, wherein the processor is configured to implement the method according to any one of claims 1 to 6 when executing the computer program instructions.

9. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are configured to implement the method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, The computer program is configured to implement the method according to any one of claims 1 to 6 when executed by a processor.

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