Range hood and method for controlling range hood based on gesture action

Abstract

The embodiment of the present invention provides a range hood and a method for controlling the range hood based on gestures. The range hood includes: a fan; a gesture sensing device for detecting a user's gestures and generating corresponding sensing signals; a controller for performing the following operations: receiving sensing signals within a preset time period and determining the corresponding gesture sensing device that sends the sensing signals; determining the adjustment direction and adjustment range of the fan's rotation speed according to the received sensing signals sent by the corresponding gesture sensing device and the duration of the sensing signals; and adjusting the fan's rotation speed according to the adjustment direction and the adjustment range. Thus, the user can adjust the fan's rotation speed from the current rotation speed to a rotation speed that is significantly different from the current rotation speed by making a gesture, thereby reducing the complexity of user operations when adjusting the fan's rotation speed, improving the adjustment efficiency, and improving the user experience.

Description

Technical Field

[0001] The present invention relates to household appliances, and more particularly to a range hood and a method for controlling the range hood based on gesture actions. Background Art

[0002] Some existing range hoods are equipped with infrared sensing devices, so that users do not need to directly touch the buttons of the range hood during cooking, but can control the operation status of the range hood through gestures.

[0003] In these range hoods, an infrared sensor is provided on each of the left and right sides of the control panel. The two infrared sensors can identify the user's waving motion from left to right or from right to left. According to each waving motion, the fan of the range hood is adjusted to a higher or lower working gear to adjust the fan speed accordingly.

[0004] However, when the range hood is set with multiple working gears, it may take multiple hand-waves to adjust to the target working gear the user desires. For example, when the user wants to adjust the fan from gear 1 to gear 5, the user needs to perform four hand-waves. This makes actual operation very inconvenient and the user experience is poor. Summary of the invention

[0005] The present invention has been made in view of the above-mentioned problems.

[0006] According to one aspect of the present invention, there is provided a range hood, comprising:

[0007] Fan;

[0008] Two gesture sensing devices, respectively used to detect the user's gesture movements and generate corresponding sensing signals;

[0009] A controller, wherein two control pins of the controller are respectively connected to the two gesture sensing devices, and is used to perform the following operations:

[0010] receiving a sensing signal within a predetermined time and determining a corresponding gesture sensing device that sends the sensing signal;

[0011] Determining the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal;

[0012] The rotation speed of the fan is adjusted according to the adjustment direction and the adjustment range.

[0013] According to an embodiment of the present application, the gesture position information of a user's gesture action is obtained, and the fan is adjusted to a corresponding speed according to the duration of the user's hand being in a preset position. For example, the longer the hand is in the preset position, the higher the corresponding speed of the fan. Thus, the user can adjust the fan speed from the current speed to a speed that is significantly different from the current speed by making a gesture action, thereby reducing the complexity of user operations when adjusting the fan speed, improving the adjustment efficiency, and improving the user experience.

[0014] Exemplarily, the gesture sensing device includes a microwave radar sensing device, a laser sensing device, a capacitive sensing device and an infrared sensing device.

[0015] The above-mentioned different sensing devices or recognition devices as the above-mentioned gesture sensing devices can more ideally meet various needs in different environments. For example, in an environment with strong light and more heat sources, a microwave radar sensing device can be selected, which is conducive to accurately identifying gestures; in an environment with dark light and fewer heat sources, an infrared sensing device, a capacitive sensing device or a laser sensing device can be selected, which is conducive to accurately identifying gestures while reducing costs.

[0016] Exemplarily, the receiving a sensing signal within a predetermined time and determining a corresponding gesture sensing device that sends the sensing signal includes:

[0017] Determine which control pin of the controller receives the sensing signal;

[0018] If the sensing signal is received by the first control pin, determining that the corresponding gesture sensing device is a first gesture sensing device connected to the first control pin;

[0019] If the sensing signal is received by the second control pin, it is determined that the corresponding gesture sensing device is a second gesture sensing device connected to the second control pin.

[0020] The fan speed adjustment direction is determined according to the control pin that receives the sensing signal. The judgment basis is clear and specific, easy to implement, and is conducive to improving the accuracy of fan adjustment. At the same time, the detection of user gestures is more humane, which is conducive to improving user experience.

[0021] The step of determining the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal specifically includes:

[0022] Determine the adjustment direction of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device: if the sensing signal sent by the first gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from small to large; if the sensing signal sent by the second gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from large to small;

[0023] The adjustment range of the rotation speed of the fan is determined according to the duration of the received sensing signal: the adjustment range of the rotation speed of the fan is proportional to the duration.

[0024] Depending on whether the first gesture sensing device or the second gesture sensing device sends out the sensing signal, it is determined whether the speed adjustment direction of the fan is from small to large or from large to small, and the speed adjustment range is determined according to the duration of the sensing signal. The adjustment method is simple and convenient, which can reduce the operating difficulty of the user. The user only needs to cover the corresponding sensing device with his hand and hold it for a certain period of time to flexibly adjust the fan of the range hood, which is conducive to improving the user experience.

[0025] Exemplarily, determining the adjustment range of the rotation speed of the fan according to the duration of the received sensing signal includes:

[0026] Every time the duration increases by the first time threshold, the adjustment range of the rotation speed of the fan is determined to be increased or decreased by one gear.

[0027] Limiting the fan speed adjustment to a limited number of gears and determining the specific gear to be adjusted through the first time threshold is conducive to saving resources and making the fan adjustment range easier to control. Users can also easily determine the current gear of the fan, making the fan adjustment more targeted and less blind.

[0028] Exemplarily, if the duration is not an integer multiple of the first time threshold, the adjustment range of the rotation speed of the fan is determined according to a value obtained by rounding the duration.

[0029] Since time changes continuously, it may be difficult for the user to accurately ensure that the duration is an integer multiple of the first time threshold. By rounding the duration and determining the speed adjustment range according to the rounded value, it fully reflects humanization, makes the user operation simpler and more convenient, and does not cause unnecessary burden to the user.

[0030] Exemplarily, the range hood further includes a display device for performing the following operations:

[0031] In the process of adjusting the fan to the corresponding rotation speed, the current working status of the fan is synchronously displayed.

[0032] By synchronously displaying the current working status of the fan, users can be more aware of the current operating status of the fan, and can thus perform more matching gestures according to the operating status to obtain the desired rotation speed, which is conducive to improving user experience.

[0033] According to another aspect of the present invention, a method for controlling a range hood based on gestures is provided, wherein the range hood is provided with two gesture sensing devices, each for detecting a user's gestures and generating a corresponding sensing signal; the two gesture sensing devices are respectively connected to two control pins of a controller; the method comprises:

[0034] The controller receives the sensing signal within a predetermined time and determines the corresponding gesture sensing device that sends the sensing signal;

[0035] Determining the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal;

[0036] The rotation speed of the fan is adjusted according to the adjustment direction and the adjustment range.

[0037] Exemplarily, the method further includes:

[0038] In the process of adjusting the rotation speed of the fan according to the adjustment direction and the adjustment range, the current working state of the fan is synchronously displayed.

[0039] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and other purposes, features and advantages of the present invention will become more apparent by describing the embodiments of the present invention in more detail in conjunction with the accompanying drawings. The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0041] Figure 1 A schematic structural diagram of a control panel on a range hood according to an embodiment of the present invention is shown;

[0042] Figure 2 A schematic flow chart of a method for controlling a range hood based on gestures according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present invention more obvious, the exemplary embodiments according to the present invention will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments of the present invention, and it should be understood that the present invention is not limited to the exemplary embodiments described herein. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the protection scope of the present invention.

[0044] According to one aspect of the present invention, there is provided a range hood, comprising a fan, a gesture sensing device and a controller.

[0045] The fan is used to extract the oil smoke generated by the stove corresponding to the range hood.

[0046] The gesture sensing device is used to detect the user's gesture movements and generate corresponding sensing signals. In this embodiment, two gesture sensing devices are included, which are respectively connected to two control pins in the controller. For example, the first gesture sensing device is connected to the first control pin in the controller, and the second gesture sensing device is connected to the second control pin in the controller.

[0047] The controller is used to perform the following operations.

[0048] The sensing signal is received within a preset time period and the corresponding gesture sensing device that sends the sensing signal is determined. The preset time period can be set according to the expected minimum and maximum dwell time of the hand. The minimum dwell time of the hand can correspond to the time range in which the gesture action can be recognized to avoid misjudgment, and the maximum dwell time of the hand can correspond to the time range in which the speed gear of the fan is adjusted from the lowest speed gear to the highest speed gear. Assume that the expected minimum dwell time of the hand can be 1 second and the maximum dwell time of the hand is 10 seconds. This can avoid the situation in which the fan is misoperated due to the user accidentally covering the gesture sensing device due to actions such as lowering the head and bending over. In some examples, the gesture action can also include the process of the user waving his hand in the air. It can be understood that when the user makes a gesture action, the gesture sensing device will generate a sensing signal. The controller receives the sensing signal within a predetermined time and determines the corresponding gesture sensing device that sends the sensing signal. As described above, the first gesture sensing device is connected to the first control pin in the controller, and the second gesture sensing device is connected to the second control pin in the controller. Then, it is only necessary to know which control pin receives the sensing signal to determine which gesture sensing device sends the sensing signal. For example, if the sensing signal is received by the first control pin, it is determined that the corresponding gesture sensing device is the first gesture sensing device connected to the first control pin; if the sensing signal is received by the second control pin, it is determined that the corresponding gesture sensing device is the second gesture sensing device connected to the second control pin.

[0049] The adjustment direction and adjustment range of the speed of the fan are determined according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal. In this step, the duration of receiving the sensing signal can be counted and the adjustment direction and adjustment range of the speed of the fan can be determined according to the counted duration. The adjustment direction can be from small to large or from large to small to characterize whether the speed change trend of the fan is getting larger or smaller. For example, it is stipulated that the speed adjustment direction when the sensing signal is sent by the first gesture sensing device is to adjust the fan speed from small to large, and when the sensing signal is sent by the second gesture sensing device, the speed adjustment direction is to adjust the fan speed from large to small. The adjustment range can be positively correlated with the duration. For example, the longer the above duration is, the larger the adjustment range is. Of course, if necessary, the adjustment range can also be negatively correlated with the duration, and the present invention does not limit this. The speed can be represented by a specific rotation speed or a gear. When represented by the rotation speed, the fan is adjusted to different rotation speeds as the duration changes. When represented by the gear, the fan is adjusted to different gears as the duration changes. It can be understood that the adjustment range expressed by the rotation speed is more precise and can achieve stepless speed change of the fan. The adjustment range expressed by the gear has preset the corresponding speed of different gears, and the user can clearly estimate the speed corresponding to different gears. The disadvantage is that the speed cannot be adjusted to different values ​​at will, but can only be switched between several preset speeds.

[0050] It can be understood that in different gesture actions, the duration of the user's hand being at the corresponding gesture sensing device can be different, that is, the duration of the sensing signal emitted by the corresponding gesture sensing device is different, so the adjustment direction and adjustment range of the fan speed can be adjusted according to the corresponding gesture sensing device and the above-mentioned duration. For example, the longer the hand is at the corresponding gesture sensing device, the higher the fan speed is adjusted. Therefore, the user can make a gesture action to adjust the fan speed from the current speed to a speed that is significantly different from the current speed, reducing the complexity of user operations when adjusting the fan speed, improving the adjustment efficiency, and improving the user experience.

[0051] Exemplarily, the gesture sensing device may include a microwave radar sensing device, a laser sensing device, a capacitive sensing device, and an infrared sensing device. The microwave radar sensing device is used to detect gestures by emitting microwave radar signals within a preset range and receiving radar echo signals reflected by the user's hand. The laser sensing device is used to emit lasers and detect the distance of the gesture blocking according to the reflected light signal to detect gestures. The capacitive sensing device forms a capacitive sensing effect when the human body approaches, and can detect gestures by detecting changes in the sensing capacitance. The infrared sensing device is used to emit infrared light and detect gestures by detecting infrared sensing signals reflected by the hand. The above-mentioned sensing devices or recognition devices as gesture sensing devices can meet various needs in different environments. For example, in an environment with strong light and more heat sources, a microwave radar sensing device can be selected, which is conducive to accurately identifying gestures. In an environment with dark light and fewer heat sources, an infrared sensing device, a capacitive sensing device, or a laser sensing device can be selected, which is conducive to accurately identifying gestures while reducing costs.

[0052] Exemplarily, determining the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal emitted by the corresponding gesture sensing device and the duration of the sensing signal specifically includes:

[0053] Determine the adjustment direction of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device: if the sensing signal sent by the first gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from small to large; if the sensing signal sent by the second gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from large to small;

[0054] The adjustment range of the rotation speed of the fan is determined according to the duration of the received sensing signal: the adjustment range of the rotation speed of the fan is proportional to the duration.

[0055] Depending on whether the first gesture sensing device or the second gesture sensing device sends out the sensing signal, it is determined whether the speed adjustment direction of the fan is from small to large or from large to small, and the speed adjustment range is determined according to the duration of the sensing signal. The adjustment method is simple and convenient, which can reduce the operating difficulty of the user. The user only needs to cover the corresponding sensing device with his hand and hold it for a certain period of time to flexibly adjust the fan of the range hood, which is conducive to improving the user experience.

[0056] Figure 1 FIG. 2 shows a schematic diagram of the structure of a control panel on a range hood according to an embodiment of the present invention. Figure 1As shown, a switch panel 200 is provided on the range hood 100. The gesture sensing device comprises a first sensing device 210 and a second sensing device 220 respectively provided on the left and right sides of the switch panel 200. The first sensing device 210 and the second sensing device 220 may be any one of a microwave radar sensing device, a laser sensing device, a capacitive sensing device and an infrared sensing device.

[0057] The above configuration is conducive to simplifying user operations, conforming to the user's regular living habits, and improving user experience. In addition, by setting up two gesture sensing devices, it is conducive to reducing costs and reducing installation difficulty.

[0058] Exemplarily, the controller determines the speed adjustment direction of the fan according to the gesture position information in the following manner. When the gesture position information indicates that the user's hand is at the first sensing device, a first adjustment direction of the fan's speed is determined. When the gesture position information indicates that the user's hand is at the second sensing device, a second adjustment direction of the fan's speed is determined, wherein the first adjustment direction is different from the second adjustment direction. Figure 1 , when the gesture position information indicates that the user's hand is at the first sensing device 210 within the preset time period, that is, the sensing signal comes from the first sensing device 210, it is determined that the speed adjustment direction of the fan is from small to large. At this time, as the duration increases, the speed of the fan is adjusted in the order of small to large. When the gesture position information indicates that the user's hand is at the second sensing device 220 within the preset time period, that is, the sensing signal comes from the second sensing device 210, it is determined that the speed adjustment direction of the fan is from large to small. At this time, as the duration increases, the speed of the fan is adjusted in the order of large to small. Of course, it can also be opposite to the above determination rule, that is, when the gesture position information indicates that the user's hand is at the first sensing device 210 within the preset time period, it is determined that the speed adjustment direction of the fan is from large to small; when the gesture position information indicates that the user's hand is at the second sensing device 220 within the preset time period, it is determined that the speed adjustment direction of the fan is from small to large. The present invention is not limited to this. In summary, in this example, the user only needs to place the hand at the first sensing device 210 or the hand at the second sensing device 220 through a gesture to determine the speed adjustment direction of the fan.

[0059] In the above example, the speed adjustment direction is determined according to whether the user's hand is at the first sensing device 210 or the second sensing device 220, and the position of the hand is used as the preset position, which can reduce the user's operating difficulty. The user only needs to cover the corresponding infrared sensing device with his hand to adjust the fan of the range hood, which is conducive to improving the user experience. It is particularly suitable for elderly people with limited mobility or disabled people.

[0060] Exemplarily, the controller determines the speed adjustment direction of the fan according to the gesture position information in the following manner. Figure 1 , for the case where the gesture position information indicates that the user's hand moves from the first sensing device 210 to the second sensing device 220, the first adjustment direction of the speed of the fan is determined to be adjusted from small to large; for the case where the gesture position information indicates that the user's hand moves from the second sensing device 220 to the first infrared sensing device 110, the second adjustment direction of the speed of the fan is determined to be adjusted from small to large. Different from the previous example, in this example, the speed adjustment direction is determined according to the movement of the user's hand. In other words, the speed adjustment direction is determined according to the user's waving direction. Generally speaking, the user's waving direction can include waving from left to right and waving from right to left, and the speed adjustment direction of the fan can include adjusting from small to large and adjusting from large to small. Therefore, by making a one-to-one correspondence between the user's waving direction and the speed direction of the fan, the determination method of the speed adjustment direction described in this example can be obtained. Although this example stipulates that waving from left to right corresponds to adjusting the speed from small to large, and waving from right to left corresponds to adjusting the speed from large to small, the present invention is not limited to this. It can also be reversed, waving from left to right corresponds to adjusting the speed from large to small, and waving from right to left corresponds to adjusting the speed from small to large. In short, different gesture waving directions correspond to different speed adjustment directions.

[0061] In this example, the controller is also used to perform the following operations. For the case where the gesture position information indicates that the user's hand moves from the first sensing device 210 to the second sensing device 220, the preset position is determined to be the position of the second sensing device 220; for the case where the gesture position information indicates that the user's hand moves from the second sensing device 220 to the first sensing device 210, the preset position is determined to be the position of the first sensing device 210. In this example, the position where the user's hand last stops in the gesture action is used as the preset position. That is, if the user's hand moves from the first sensing device 210 to the second sensing device 220 in a gesture action, the second sensing device 220 is used as the preset position. Conversely, if the user's hand moves from the second sensing device 220 to the first sensing device 210 in a gesture action, the second sensing device 210 is used as the preset position.

[0062] Exemplarily, the controller adjusts the fan to the corresponding rotation speed according to the duration in the following manner: directly adjusts the fan to the corresponding rotation speed according to the length of the duration. It can be understood that the above duration is the duration of the user's hand at a preset position in a gesture. Since the corresponding gesture in this example is a waving action, it will successively block two different gesture sensing devices, so it is not easy to have a false action similar to a waving operation. In this case, once the user is detected to make a waving action, the corresponding rotation speed of the fan can be determined directly and immediately according to the duration, which can minimize the user's waiting time and improve the efficiency of the fan adjustment.

[0063] Exemplarily, the controller determines the adjustment range of the fan according to the duration in the following manner: the adjustment gear of the fan is increased or decreased by one gear every time the duration increases by the first time threshold. For example, the second time threshold is set to 1 second, and the speed of the fan is increased or decreased by one gear every time the duration of the user's hand in the preset position increases by 1 second.

[0064] Limiting the speed adjustment of the fan to a limited number of gears and determining the specific gear to be adjusted by the second time threshold is conducive to saving resources and making the adjustment range of the fan easier to control. The user can also easily determine the current gear of the fan, making the adjustment of the fan more targeted and less blind.

[0065] Exemplarily, if the duration is not an integer multiple of the first time threshold, the adjustment range of the rotation speed of the fan is determined according to a value obtained by rounding the duration.

[0066] Since time changes continuously, it may be difficult for the user to accurately ensure that the duration is an integer multiple of the first time threshold. By rounding the duration and determining the speed adjustment range according to the rounded value, it fully reflects humanization, makes the user operation simpler and more convenient, and does not cause unnecessary burden to the user.

[0067] Exemplarily, the range hood further includes a display device for performing the following operations: in the process of adjusting the fan to the corresponding rotation speed, synchronously displaying the current working state of the fan. In the case where the working gear is used as the adjustment range, assuming that the initial working gear is gear 1, then in a gesture action, when the user's hand hovers at a preset position, as the duration increases, the display device will sequentially display the current working gears 1, 2, 3, and 4. Similarly, in the case where the rotation speed is used as the adjustment range, the current rotation speed of the fan can also be sequentially displayed as the user's hand is at the preset position for a duration.

[0068] By synchronously displaying the current working status of the fan, users can be more aware of the current operating status of the fan, and can thus perform more matching gestures according to the operating status to obtain the desired rotation speed, which is conducive to improving user experience.

[0069] According to another aspect of the present invention, a method for controlling a range hood based on gesture actions is also provided. The range hood is provided with a gesture sensing device for detecting a user's gesture actions and generating corresponding sensing signals. Figure 2 FIG. 2 shows a schematic flow chart of a method for controlling a range hood based on gestures according to an embodiment of the present invention. Figure 2 As shown, the method includes the following steps.

[0070] S210: receiving a sensing signal within a predetermined time and determining a corresponding gesture sensing device that sends the sensing signal;

[0071] S220: determining the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal;

[0072] S230: Adjust the rotation speed of the fan according to the adjustment direction and the adjustment range.

[0073] Exemplarily, the method further includes:

[0074] In the process of adjusting the rotation speed of the fan according to the adjustment direction and the adjustment range, the current working state of the fan is synchronously displayed.

[0075] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present invention thereto. Various changes and modifications may be made therein by one of ordinary skill in the art without departing from the scope and spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as required by the appended claims.

[0076] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0077] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed.

[0078] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0079] Similarly, it should be understood that in order to streamline the present invention and help understand one or more of the various inventive aspects, in the description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be interpreted as reflecting the following intention: the claimed invention requires more features than the features explicitly stated in each claim. More specifically, as reflected in the corresponding claims, the inventive point is that the corresponding technical problem can be solved with less than all the features of a single disclosed embodiment. Therefore, the claims following the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present invention.

[0080] It will be understood by those skilled in the art that, except for mutually exclusive features, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this specification may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0081] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0082] The various component embodiments of the present invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) may be used in practice to implement some or all of the functions of some modules in the smoke machine according to an embodiment of the present invention. The present invention may also be implemented as a device program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program for implementing the present invention may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0083] It should be noted that the above embodiments illustrate rather than limit the present invention, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be constructed as a limitation of the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0084] The above is only an explanation of the specific implementation or individual implementation of the present invention, and the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A range hood, characterized in that: include: Fan; Two gesture sensing devices, respectively used to detect the user's gesture movements and generate corresponding sensing signals; A controller, wherein two control pins of the controller are respectively connected to the two gesture sensing devices, and is used to perform the following operations: receiving a sensing signal within a predetermined time and determining a corresponding gesture sensing device that sends the sensing signal; Determine the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal, which specifically includes: determine the adjustment direction of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device: if the sensing signal sent by the first gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from small to large; if the sensing signal sent by the second gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from large to small; determine the adjustment range of the rotation speed of the fan according to the duration of the received sensing signal, and the adjustment range of the rotation speed of the fan is proportional to the duration; The rotation speed of the fan is adjusted according to the adjustment direction and the adjustment range.

2. The range hood according to claim 1, characterized in that: The gesture sensing device includes a microwave radar sensing device, a laser sensing device, a capacitive sensing device and an infrared sensing device.

3. The range hood according to claim 1 or 2, characterized in that: The gesture sensing device that receives the sensing signal within a predetermined time and determines the corresponding gesture sensing device that sends the sensing signal includes: Determine which control pin of the controller receives the sensing signal; If the sensing signal is received by the first control pin, determining that the corresponding gesture sensing device is a first gesture sensing device connected to the first control pin; If the sensing signal is received by the second control pin, it is determined that the corresponding gesture sensing device is a second gesture sensing device connected to the second control pin.

4. The range hood according to claim 1, characterized in that: The step of determining the adjustment range of the rotation speed of the fan according to the duration of the received sensing signal includes: Every time the duration increases by the first time threshold, the adjustment range of the rotation speed of the fan is determined to be increased or decreased by one gear.

5. The range hood according to claim 4, characterized in that: If the duration is not an integer multiple of the first time threshold, the adjustment range of the rotation speed of the fan is determined according to a value calculated by rounding the duration.

6. The range hood according to claim 1, characterized in that: The range hood also includes a display device for performing the following operations: In the process of adjusting the fan to the corresponding rotation speed, the current working status of the fan is synchronously displayed.

7. A method for controlling a range hood based on gestures, characterized in that: The range hood is provided with two gesture sensing devices, each for detecting a user's gesture action and generating a corresponding sensing signal; the two gesture sensing devices are respectively connected to two control pins of a controller; the method comprises: The controller receives the sensing signal within a predetermined time and determines the corresponding gesture sensing device that sends the sensing signal; Determine the adjustment direction and adjustment range of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device and the duration of the sensing signal, which specifically includes: determining the adjustment direction of the rotation speed of the fan according to the received sensing signal sent by the corresponding gesture sensing device: if the sensing signal sent by the first gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from small to large; if the sensing signal sent by the second gesture sensing device is received, determine that the adjustment direction of the rotation speed of the fan is from large to small; determine the adjustment range of the rotation speed of the fan according to the duration of the received sensing signal, and the adjustment range of the rotation speed of the fan is proportional to the duration; The rotation speed of the fan is adjusted according to the adjustment direction and the adjustment range.

8. The method according to claim 7, characterized in that The method further comprises: In the process of adjusting the rotation speed of the fan according to the adjustment direction and the adjustment range, the current working state of the fan is synchronously displayed.

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