Range hood, range hood smoke barrier control method and device and electronic equipment

Abstract

The embodiment of the invention discloses a range hood, a range hood smoke barrier control method and device and electronic equipment. A gyroscope sensor is installed on the smoke barrier of the range hood, the gyroscope sensor is parallel to the smoke barrier of the range hood and moves along with the smoke barrier of the range hood, and the gyroscope sensor and the smoke barrier of the range hood are relatively static in the moving process; the control method comprises the following steps: acquiring a current rotation angle output by a gyroscope sensor; the relative angle of the current rotation angle relative to a first preset angle is determined, and the first preset angle indicates the rotation angle corresponding to the gyroscope sensor when the smoke barrier of the range hood is located at the closed position; based on the relative angle, the current position of the smoke barrier of the range hood is determined, and the current position indicates the rotation angle of the smoke barrier of the range hood relative to the closed position. The method solves the problems that the position of the smoke barrier of the range hood is not accurately judged, errors are accumulated to a certain degree, and rotation blocking or position errors are caused, and the position of the smoke barrier of the range hood can be accurately determined.

Description

Technical Field

[0001] The present invention relates to the technical field of kitchen appliances, and in particular to a range hood and a range hood smoke baffle control method, device and electronic equipment. Background Art

[0002] Side-suction range hoods generally have a range hood smoke baffle that opens and closes automatically. When the range hood is working, the range hood smoke baffle is often opened to the maximum angle. When the range hood is not working, the range hood smoke baffle will be completely closed. At present, there are mainly the following methods to determine the position of the range hood smoke baffle:

[0003] 1. Use the stall current to determine whether the smoke damper of the range hood is fully open or fully closed. Using the stall current method, you can only know the fully open and fully closed positions of the smoke damper of the range hood. If the smoke damper of the range hood stops in the middle, its position cannot be determined, and each stall current will damage the motion mechanism.

[0004] 2. Judging by mechanical limit or simple switch signal, this method has problems such as low accuracy and easy misjudgment;

[0005] 3. When judging by the Hall sensor, when the moving push rod stops, due to untimely braking, the waveform generated before stopping is incomplete and the waveform is elongated, resulting in the Hall sensor counting being smaller than the actual data, and there is an error. When the start-stop operation is repeated many times, the error accumulates and increases, and the judged position is no longer accurate. Summary of the invention

[0006] The present application provides a range hood and a range hood smoke baffle control method, device and electronic device to at least solve the problem of inaccurate position judgment of the range hood smoke baffle, and the error accumulation to a certain extent leading to stalling or position error. The technical solution of the present application is as follows:

[0007] According to a first aspect of an embodiment of the present application, a method for controlling a range hood smoke damper is provided, wherein the range hood smoke damper is mounted on a fixed axis of the range hood and rotates around the fixed axis, a gyroscope sensor is mounted on the range hood smoke damper, the gyroscope sensor is parallel to the range hood smoke damper and moves with the range hood smoke damper, and the gyroscope sensor and the range hood smoke damper are relatively stationary during the movement; the method comprises:

[0008] Obtaining the current rotation angle output by the gyroscope sensor;

[0009] Determining a relative angle of the current rotation angle relative to a first preset angle, wherein the first preset angle indicates a rotation angle corresponding to the gyro sensor when the smoke shield of the range hood is in a closed position;

[0010] Based on the relative angle, a current position of the range hood smoke baffle is determined, where the current position indicates a rotation angle of the range hood smoke baffle relative to the closed position.

[0011] In some exemplary embodiments, determining the current position of the range hood smoke baffle based on the relative angle includes:

[0012] When the difference between the relative angle and the first preset angle is less than a preset angle threshold, determining that the range hood smoke baffle is in a closed position;

[0013] When the relative angle reaches a second preset angle, it is determined that the range hood smoke baffle is in the fully open position, and the second preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke baffle is in the fully open position.

[0014] In some exemplary embodiments, the method further comprises:

[0015] When the relative angle is between the first preset angle and the second preset angle, obtaining a change amount of the relative angle;

[0016] Based on the change in the relative angle, the movement state of the range hood smoke baffle is determined.

[0017] In some exemplary embodiments, determining the motion state of the range hood smoke baffle based on the change in the relative angle includes:

[0018] When the change amount of the relative angle is less than a preset change threshold, determining that the movement state of the range hood smoke baffle is that no obstacle is encountered;

[0019] When the change amount of the relative angle is greater than or equal to the preset change threshold, it is determined that the movement state of the range hood smoke baffle is encountering an obstacle.

[0020] In some exemplary embodiments, when the movement state of the range hood smoke baffle is encountering an obstacle, the method further includes:

[0021] The smoke baffle of the range hood is controlled to stop moving, or the smoke baffle of the range hood is controlled to move in a direction opposite to the current moving direction.

[0022] In some exemplary embodiments, the current position of the range hood smoke baffle indicates a current opening angle of the range hood smoke baffle, and the method further includes:

[0023] The maximum speed of the fan motor of the range hood is calculated according to the current opening angle; the expression of the maximum speed is ωmax=h(θ), wherein ωmax is the maximum speed and θ is the current opening angle; the maximum speed ωmax is the maximum speed at which the fan motor allows the range hood smoke baffle to be opened when the current opening angle θ and the fan motor is opened with the maximum torque;

[0024] Determine whether the current rotation speed is less than or equal to the maximum rotation speed. If so, determine whether the current opening angle reaches a preset smoke baffle angle. If so, control the range hood smoke baffle to stop moving.

[0025] In some exemplary embodiments, the method further comprises:

[0026] Obtaining the current speed of the fan motor;

[0027] If it is determined that the current speed is greater than the maximum speed, the current speed is reduced until the reduced current speed is less than or equal to the maximum speed, and then it is determined whether the current opening angle reaches the preset smoke baffle angle. If so, the range hood smoke baffle is controlled to stop moving.

[0028] According to a second aspect of an embodiment of the present application, a range hood smoke damper control device is provided, wherein the range hood smoke damper is mounted on a fixed axis of the range hood and rotates around the fixed axis, a gyroscope sensor is mounted on the range hood smoke damper, the gyroscope sensor is parallel to the range hood smoke damper and moves with the smoke damper, and the gyroscope sensor and the range hood smoke damper are relatively stationary during the movement; the device comprises:

[0029] a current rotation angle acquisition unit, configured to acquire a current rotation angle output by the gyro sensor;

[0030] a relative angle determination unit configured to determine a relative angle of the current rotation angle relative to a first preset angle, wherein the first preset angle indicates a rotation angle corresponding to the gyro sensor when the smoke baffle of the range hood is in a closed position;

[0031] The current position determination unit is configured to determine the current position of the range hood smoke baffle based on the relative angle, wherein the current position indicates a rotation angle of the range hood smoke baffle relative to the closed position.

[0032] In some exemplary embodiments, the current position determining unit includes:

[0033] a closed position determining unit, configured to determine that the smoke baffle of the range hood is in a closed position when the difference between the relative angle and the first preset angle is less than a preset angle threshold;

[0034] The fully open position determination unit is configured to determine that the range hood smoke shield is in the fully open position when the relative angle reaches a second preset angle, and the second preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke shield is in the fully open position.

[0035] In some exemplary embodiments, the apparatus further comprises:

[0036] A relative angle variation acquisition unit, configured to acquire a variation of the relative angle when the relative angle is between a first preset angle and a second preset angle;

[0037] The motion state determination unit is configured to determine the motion state of the range hood smoke baffle based on the change in relative angle.

[0038] In some exemplary embodiments, the motion state determination unit includes:

[0039] The obstacle-free determination unit is configured to determine that the motion state of the range hood smoke baffle is no obstacle encountered when the change amount of the relative angle is less than a preset change threshold;

[0040] The obstacle encountering determination unit is configured to determine that the movement state of the range hood smoke baffle is encountering an obstacle when the change amount of the relative angle is greater than or equal to a preset change threshold.

[0041] In some exemplary embodiments, the apparatus further comprises:

[0042] The motion state control unit is configured to control the range hood smoke shield to stop moving when the motion state of the range hood smoke shield is encountering an obstacle, or to control the range hood smoke shield to move in a direction opposite to the current motion direction.

[0043] In some exemplary embodiments, the apparatus further comprises:

[0044] The fan motor maximum speed calculation unit is configured to execute the current position of the range hood smoke damper to indicate the current opening angle of the range hood smoke damper, and calculate the maximum speed of the range hood fan motor according to the current opening angle; the expression of the maximum speed is ωmax=h(θ), wherein ωmax is the maximum speed and θ is the current opening angle; the maximum speed ωmax is the maximum speed of the fan motor allowing the range hood smoke damper to be opened when the current opening angle θ is reached and the fan motor is opened with the maximum torque;

[0045] The first stop motion determination unit is configured to determine whether the current rotation speed is less than or equal to the maximum rotation speed. If so, determine whether the current opening angle reaches the preset smoke baffle angle. If so, control the range hood smoke baffle to stop moving.

[0046] In some exemplary embodiments, the apparatus further comprises:

[0047] The fan motor current speed acquisition unit is configured to acquire the current speed of the fan motor;

[0048] The second stop motion determination unit is configured to execute if it is determined that the current speed is greater than the maximum speed, then reduce the current speed until the reduced current speed is less than or equal to the maximum speed, and then determine whether the current opening angle reaches the preset smoke shield angle. If so, control the range hood smoke shield to stop moving.

[0049] According to a third aspect of an embodiment of the present application, a range hood is provided, wherein the range hood comprises the range hood smoke baffle control device according to the second aspect.

[0050] According to a fourth aspect of an embodiment of the present application, there is provided an electronic device, including:

[0051] processor;

[0052] a memory for storing instructions executable by the processor;

[0053] Wherein, the processor is configured to execute the instructions to implement the range hood smoke baffle control method of the first aspect above.

[0054] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application.

[0055] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0056] In the embodiment of the present application, the range hood smoke damper is installed on the fixed axis of the range hood and rotates around the fixed axis. A gyroscope sensor is installed on the range hood smoke damper. The gyroscope sensor is parallel to the range hood smoke damper and moves with the range hood smoke damper. The gyroscope sensor and the range hood smoke damper are relatively stationary during the movement. In the embodiment of the present application, the current rotation angle output by the gyroscope sensor is obtained; the relative angle of the current rotation angle relative to the first preset angle is determined, and the first preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke damper is in the closed position; based on the relative angle, the current position of the range hood smoke damper is determined, and the current position indicates the rotation angle of the range hood smoke damper relative to the closed position. The present application solves the problem of inaccurate position judgment of the range hood smoke damper, and the error accumulated to a certain extent leads to stalling or position error, and can accurately determine the position of the range hood smoke damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0058] Figure 1 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 1 ;

[0059] Figure 2 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 2 ;

[0060] Figure 3 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 3 ;

[0061] Figure 4 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 4 ;

[0062] Figure 5 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 5 ;

[0063] Figure 6 The process of the range hood smoke baffle control method provided in the embodiment of the present application Figure 6 ;

[0064] Figure 7 A block diagram of a range hood smoke baffle control device provided in an embodiment of the present application;

[0065] Figure 8 A block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products, or devices.

[0068] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0069] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0070] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0071] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0072] In a range hood smoke damper control method of an embodiment of the present application, the range hood smoke damper is installed on a fixed axis of the range hood and rotates around the fixed axis. A gyroscope sensor is installed on the range hood smoke damper. The gyroscope sensor is parallel to the range hood smoke damper and moves with the range hood smoke damper. The gyroscope sensor and the range hood smoke damper are relatively stationary during the movement. Figure 1 A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 1 , the above method comprises:

[0073] In step S101 , the current rotation angle output by the gyro sensor is obtained.

[0074] Specifically, a gyro sensor is a device used to detect and measure the rotation angle and angular velocity of an object, and its working principle is mainly based on the law of conservation of angular momentum. The present application installs a gyro sensor on the range hood smoke shield and sets it parallel to the range hood smoke shield. The range hood smoke shield rotates around a fixed axis, and the gyro sensor rotates with the range hood smoke shield. The gyro sensor and the range hood smoke shield are relatively stationary during the movement. The gyro sensor and the range hood smoke shield move synchronously, and the current rotation angle is output by the gyro sensor, thereby obtaining the current rotation angle of the range hood smoke shield.

[0075] In step S102, a relative angle of the current rotation angle with respect to a first preset angle is determined, where the first preset angle indicates a rotation angle corresponding to the gyro sensor when the smoke baffle of the range hood is in a closed position.

[0076] Specifically, the range hood smoke baffle is in a closed position, which usually means that when the range hood is not working, the range hood smoke baffle is parallel to or tightly fitted with the main body of the range hood, and the first preset angle indicates that when the range hood smoke baffle is in the closed position, the corresponding rotation angle of the gyroscope sensor can be 0 degrees.

[0077] In step S103, based on the relative angle, the current position of the range hood smoke damper is determined, and the current position indicates the rotation angle of the range hood smoke damper relative to the closed position.

[0078] Specifically, by determining the relative angle of the gyro sensor with respect to the reference axis or the main body of the range hood, the angle between the range hood smoke baffle in the open state and the reference axis or the main body of the range hood is determined, thereby accurately determining the current position of the range hood smoke baffle.

[0079] In the above embodiment, when the smoke shield of the range hood rotates, the gyroscope sensor is used to measure the rotation angle of the smoke shield of the range hood relative to the reference axis or the range hood body in real time based on the movement of the reference axis or the range hood body, so as to accurately determine the current position of the smoke shield of the range hood, solve the problem of inaccurate position judgment of the smoke shield, and the problem of error accumulation to a certain extent leading to stalling or position error, and the position of the smoke shield of the range hood can be accurately determined.

[0080] Figure 2 A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 2 ,like Figure 2 As shown, the current position of the smoke baffle of the range hood is determined based on the relative angle, including:

[0081] In step S201, when the difference between the relative angle and the first preset angle is less than the preset angle threshold, it is determined that the smoke baffle of the range hood is in the closed position.

[0082] Specifically, when the relative angle is equal to the first preset angle, the smoke baffle of the range hood is parallel to or closely fitted with the main body of the range hood, and the smoke baffle of the range hood is closed.

[0083] In step S202, when the relative angle reaches a second preset angle, it is determined that the range hood smoke shield is in the fully open position, and the second preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke shield is in the fully open position.

[0084] Specifically, when the smoke shield of the range hood is in the fully open position, the smoke shield of the range hood will be expanded outward or upward to a certain angle to form a larger smoke collection area, so as to more effectively capture and collect the oil smoke generated during the cooking process; the opening angle of the fully open position of the smoke shield of the range hood depends on the design of the range hood. The angle of common range hoods may be between 60 degrees and 90 degrees, but this angle is not fixed and may vary for range hoods of different brands and models. During the cooking process, especially when cooking or other cooking activities that generate a lot of oil smoke, the smoke shield of the range hood is in the fully open position.

[0085] In the above implementation, it can be accurately determined whether the smoke shield of the range hood is in the closed position or the fully open position, thereby improving the accuracy of angle recognition of the smoke shield of the range hood.

[0086] Figure 3 A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 3 ,like Figure 3 As shown, the above method also includes:

[0087] In step S301, when the relative angle is between the first preset angle and the second preset angle, the change amount of the relative angle is obtained.

[0088] In step S302, the movement state of the range hood smoke baffle is determined based on the change in the relative angle.

[0089] Specifically, when the relative angle is between the first preset angle and the second preset angle, that is, when the range hood smoke damper is in the middle position, the change in the relative angle refers to the change in angular velocity of the range hood smoke damper during rotation. The angular velocity change of the range hood smoke damper during rotation can be obtained by the above-mentioned gyroscope sensor. Based on the change in angular velocity, the motion state of the range hood smoke damper is determined, and the motion state includes uniform motion and non-uniform motion. In the case of uniform motion, the range hood smoke damper opens and closes normally, and in the case of non-uniform motion, the range hood smoke damper collides with obstacles or pinches hands when opening and closing.

[0090] In the above implementation, the movement state of the range hood smoke shield is determined by the change in relative angle, and whether the range hood smoke shield encounters an obstacle or pinches a hand is detected in time, thereby improving the safety of the range hood shield control and further improving the product performance of the range hood.

[0091] Figure 4 A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 4 ,like Figure 4 As shown, the above-mentioned determination of the motion state of the range hood smoke baffle based on the change in relative angle includes:

[0092] In step S401, when the change amount of the relative angle is less than a preset change threshold, it is determined that the movement state of the range hood smoke baffle is that no obstacle is encountered.

[0093] In step S402, when the change amount of the relative angle is greater than or equal to a preset change threshold, it is determined that the movement state of the range hood smoke baffle is encountering an obstacle.

[0094] Specifically, during the movement of the range hood smoke shield, it moves at a constant speed under normal circumstances. When the range hood smoke shield collides with an obstacle or pinches your hand, the angular velocity will fluctuate. When the angular velocity fluctuation range exceeds a preset change threshold, it is considered that the current movement of the range hood smoke shield is restricted, and it is judged that it has collided with an obstacle or pinched your hand.

[0095] In the above implementation manner, the accuracy and stability of obstacle or finger pinching detection can be improved, thereby improving the safety of range hood baffle control and enhancing the product performance of the range hood.

[0096] Figure 5A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 5 ,like Figure 5 As shown, in the case where the movement state of the smoke baffle of the range hood is encountering an obstacle, the method further includes:

[0097] In step S501, the smoke shield of the range hood is controlled to stop moving, or the smoke shield of the range hood is controlled to move in a direction opposite to the current moving direction.

[0098] Specifically, when the movement state of the range hood smoke shield is a case where an obstacle is encountered, an early warning prompt is issued, and the movement of the range hood smoke shield is stopped, or the range hood smoke shield is moved in a direction opposite to the current movement direction.

[0099] In the above embodiment, when it is detected that the range hood smoke shield collides with an obstacle or pinches a hand, the range hood smoke shield is promptly controlled to stop moving, or the range hood smoke shield is controlled to move in a direction opposite to the current movement direction. This can effectively avoid personal injury or overturning of kitchen utensils during the opening and closing process of the range hood smoke shield, prevent hands from being pinched, and improve the safety of the range hood shield.

[0100] Figure 6 A schematic diagram showing a flow chart of a range hood smoke baffle control method according to an embodiment of the present application Figure 6 ,like Figure 6 As shown, the current position of the range hood smoke baffle indicates the current opening angle of the range hood smoke baffle, and the method further includes:

[0101] In step S601, the maximum speed of the range hood fan motor is calculated according to the current opening angle; the expression of the maximum speed is ωmax=h(θ), wherein ωmax is the maximum speed and θ is the current opening angle; the maximum speed ωmax is the maximum speed at which the fan motor allows the range hood smoke baffle to open when the current opening angle θ is reached and the fan motor is opened with maximum torque.

[0102] In step S602, it is determined whether the current rotation speed is less than or equal to the maximum rotation speed. If so, it is determined whether the current opening angle reaches the preset smoke baffle angle. If so, the range hood smoke baffle is controlled to stop moving.

[0103] Specifically, the maximum speed of the current range hood fan motor (i.e., the maximum constrained speed) is obtained according to the current opening angle of the range hood smoke damper, so as to constrain the negative pressure generated when the range hood fan motor is running through the maximum speed, and ensure that the smoke damper drive motor can open the smoke damper normally. The method for obtaining the maximum speed ωmax of the fan motor at the current opening angle θ of the range hood smoke damper requires that the range hood smoke damper opening angle be opened to θ1 in advance, and the fan motor of the range hood smoke damper is opened with the maximum torque at this time when the fan maintains a steady state of operation, and the maximum speed ωmax of the fan motor that allows the smoke damper to be opened is obtained. 1 ; Continuous testing within the angle range [0, θmax] can obtain a single mapping relationship of the maximum speed as [ωmax_min, ωmax_max]. Preferably, the speed range is [ωmax_min, ωmax_max], and the actual measured value is [200, 2500] rpm. According to the maximum speed, if it is confirmed that the current speed is less than or equal to the maximum speed, then when it is determined that the current opening angle reaches the preset smoke shield angle, the range hood smoke shield is controlled to stop moving.

[0104] In the above implementation, the negative pressure generated when the fan motor of the range hood is running can be restrained, ensuring that the smoke shield driving motor can open the smoke shield normally, thereby overcoming the misjudgment of the smoke shield adjustment angle caused by long-term operation of the range hood.

[0105] In some exemplary embodiments, the above method further comprises:

[0106] Get the current speed of the fan motor;

[0107] If it is determined that the current speed is greater than the maximum speed, the current speed is reduced until the reduced current speed is less than or equal to the maximum speed, and then it is determined whether the current opening angle reaches the preset smoke baffle angle. If so, the range hood smoke baffle is controlled to stop moving.

[0108] Specifically, the current speed of the above-mentioned fan motor can be obtained by measuring through a Hall effect sensor. The Hall effect sensor can detect changes in the magnetic field and is usually used to detect the position and speed of the fan motor rotor. The sensor is installed near the fan motor. When the magnet on the rotor passes through the sensor, the sensor will generate a voltage pulse. By calculating the number of pulses per unit time, the speed of the fan motor can be obtained. Compare the current speed and the maximum speed. If the current speed is greater than the maximum speed, issue a command to reduce the input power of the motor, thereby reducing the speed. The above can be achieved by reducing the motor supply voltage, changing the pulse width modulation (PWM) signal of the motor drive signal, and other methods.

[0109] In the above embodiment, by obtaining the current speed of the fan motor and judging whether the current speed is greater than the maximum speed, it is avoided that the negative pressure generated during the operation of the fan motor of the range hood causes the range hood smoke damper driving motor to be unable to open the range hood smoke damper due to insufficient torque. That is, it is possible to avoid the situation where, when the range hood smoke damper starts to open, the maximum driving torque provided by the range hood smoke damper driving motor is not enough to open the range hood smoke damper due to the negative pressure generated by the operation of the range hood fan motor, resulting in operation failure.

[0110] Figure 7 1 is a structural block diagram of a range hood smoke damper control device according to an exemplary embodiment. Figure 7 The range hood smoke shield is installed on the fixed axis of the range hood and rotates around the fixed axis. A gyroscope sensor is installed on the range hood smoke shield. The gyroscope sensor is parallel to the range hood smoke shield and moves with the smoke shield. The gyroscope sensor and the range hood smoke shield are relatively stationary during the movement. The above-mentioned control device 700 includes:

[0111] The current rotation angle acquisition unit 710 is configured to acquire the current rotation angle output by the gyroscope sensor;

[0112] The relative angle determination unit 720 is configured to determine the relative angle of the current rotation angle relative to a first preset angle, where the first preset angle indicates the rotation angle corresponding to the gyro sensor when the smoke baffle of the range hood is in the closed position;

[0113] The current position determination unit 730 is configured to determine the current position of the range hood smoke baffle based on the relative angle, where the current position indicates the rotation angle of the range hood smoke baffle relative to the closed position.

[0114] In some exemplary embodiments, the current position determination unit 730 includes:

[0115] a closed position determining unit, configured to determine that the smoke baffle of the range hood is in a closed position when the difference between the relative angle and the first preset angle is less than a preset angle threshold;

[0116] The fully open position determination unit is configured to determine that the range hood smoke shield is in the fully open position when the relative angle reaches a second preset angle, and the second preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke shield is in the fully open position.

[0117] In some exemplary embodiments, the above apparatus further comprises:

[0118] A relative angle variation acquisition unit, configured to acquire a variation of the relative angle when the relative angle is between a first preset angle and a second preset angle;

[0119] The motion state determination unit is configured to determine the motion state of the range hood smoke baffle based on the change in relative angle.

[0120] In some exemplary embodiments, the motion state determination unit includes:

[0121] The obstacle-free determination unit is configured to determine that the motion state of the range hood smoke baffle is no obstacle encountered when the change amount of the relative angle is less than a preset change threshold;

[0122] The obstacle encountering determination unit is configured to determine that the movement state of the range hood smoke baffle is encountering an obstacle when the change amount of the relative angle is greater than or equal to a preset change threshold.

[0123] In some exemplary embodiments, the above apparatus further comprises:

[0124] The motion state control unit is configured to control the range hood smoke shield to stop moving when the motion state of the range hood smoke shield is encountering an obstacle, or to control the range hood smoke shield to move in a direction opposite to the current motion direction.

[0125] In some exemplary embodiments, the above apparatus further comprises:

[0126] The fan motor maximum speed calculation unit is configured to execute the current position of the range hood smoke damper to indicate the current opening angle of the range hood smoke damper, and calculate the maximum speed of the range hood fan motor according to the current opening angle; the expression of the maximum speed is ωmax=h(θ), wherein ωmax is the maximum speed and θ is the current opening angle; the maximum speed ωmax is the maximum speed of the fan motor allowing the range hood smoke damper to be opened when the current opening angle θ is reached and the fan motor is opened with the maximum torque;

[0127] The first stop motion determination unit is configured to determine whether the current rotation speed is less than or equal to the maximum rotation speed. If so, determine whether the current opening angle reaches the preset smoke baffle angle. If so, control the range hood smoke baffle to stop moving.

[0128] In some exemplary embodiments, the above apparatus further comprises:

[0129] The fan motor current speed acquisition unit is configured to acquire the current speed of the fan motor;

[0130] The second stop motion determination unit is configured to execute if it is determined that the current speed is greater than the maximum speed, then reduce the current speed until the reduced current speed is less than or equal to the maximum speed, and then determine whether the current opening angle reaches the preset smoke shield angle. If so, control the range hood smoke shield to stop moving.

[0131] In some embodiments, the functions or modules included in the device provided in the embodiments of the present application can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments. For the sake of brevity, it will not be repeated here.

[0132] In some exemplary embodiments, the present application further provides a range hood, which includes the range hood smoke baffle control device provided in any of the above embodiments.

[0133] In some exemplary embodiments, the present application also provides an electronic device, comprising a processor; a memory for storing instructions executable by the processor; wherein, when the processor is configured to execute the instructions stored in the memory, the range hood smoke damper control method provided in any of the above embodiments is implemented.

[0134] The electronic device may be a terminal, a server or a similar computing device. For example, the electronic device is a server. Figure 8 is a block diagram of an electronic device for controlling a smart cooker according to an exemplary embodiment. Figure 8 As shown, the server 800 may have relatively large differences due to different configurations or performances, and may include one or more central processing units (CPU) 810 (the processor 810 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 830 for storing data, and one or more storage media 820 (such as one or more mass storage devices) for storing application programs 823 or data 822. Among them, the memory 830 and the storage medium 820 can be short-term storage or permanent storage. The program stored in the storage medium 820 may include one or more modules, and each module may include a series of instruction operations in the server. Furthermore, the central processing unit 810 can be configured to communicate with the storage medium 820 and execute a series of instruction operations in the storage medium 820 on the server 800. The server 800 may also include one or more power supplies 860, one or more wired or wireless network interfaces 850, one or more input and output interfaces 840, and / or one or more operating systems 821, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0135] The input / output interface 840 may be used to receive or send data via a network. The specific example of the network may include a wireless network provided by a communication provider of the server 800. In one example, the input / output interface 840 includes a network adapter (NIC), which may be connected to other network devices via a base station so as to communicate with the Internet. In one example, the input / output interface 840 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0136] It can be understood by those skilled in the art that Figure 8 The structure shown is for illustration only and does not limit the structure of the above electronic device. Figure 8 More or fewer components as shown, or with Figure 8 Different configurations are shown.

[0137] In some exemplary embodiments, the present application further provides a computer-readable storage medium including instructions, such as a memory 830 including instructions, and the instructions can be executed by the processor 810 of the device 800 to complete the range hood smoke damper control method. Optionally, the computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0138] In some exemplary embodiments, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the range hood smoke damper control method provided in any of the above embodiments.

[0139] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0140] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A range hood smoke baffle control method, characterized in that: A range hood smoke shield is installed on a fixed axis of the range hood and rotates around the fixed axis. A gyroscope sensor is installed on the range hood smoke shield. The gyroscope sensor is parallel to the range hood smoke shield and moves with the range hood smoke shield. The gyroscope sensor and the range hood smoke shield are relatively stationary during the movement. The method includes: Obtaining the current rotation angle output by the gyroscope sensor; Determining a relative angle of the current rotation angle relative to a first preset angle, wherein the first preset angle indicates a rotation angle corresponding to the gyro sensor when the smoke shield of the range hood is in a closed position; Based on the relative angle, a current position of the range hood smoke baffle is determined, where the current position indicates a rotation angle of the range hood smoke baffle relative to the closed position.

2. A range hood smoke baffle control method according to claim 1, characterized in that: The determining the current position of the range hood smoke baffle based on the relative angle includes: When the difference between the relative angle and the first preset angle is less than a preset angle threshold, determining that the range hood smoke baffle is in a closed position; When the relative angle reaches a second preset angle, it is determined that the range hood smoke baffle is in the fully open position, and the second preset angle indicates the corresponding rotation angle of the gyroscope sensor when the range hood smoke baffle is in the fully open position.

3. A range hood smoke baffle control method according to claim 2, characterized in that: The method further comprises: When the relative angle is between the first preset angle and the second preset angle, obtaining a change amount of the relative angle; Based on the change in the relative angle, the movement state of the range hood smoke baffle is determined.

4. A range hood smoke baffle control method according to claim 3, characterized in that: The determining the motion state of the range hood smoke baffle based on the change in the relative angle includes: When the change amount of the relative angle is less than a preset change threshold, determining that the movement state of the range hood smoke baffle is that no obstacle is encountered; When the change amount of the relative angle is greater than or equal to the preset change threshold, it is determined that the movement state of the range hood smoke baffle is encountering an obstacle.

5. A range hood smoke baffle control method according to claim 4, characterized in that: When the movement state of the range hood smoke baffle is encountering an obstacle, the method further includes: The smoke baffle of the range hood is controlled to stop moving, or the smoke baffle of the range hood is controlled to move in a direction opposite to the current moving direction.

6. A range hood smoke baffle control method according to claim 1, characterized in that: The current position of the range hood smoke baffle indicates a current opening angle of the range hood smoke baffle, and the method further includes: The maximum speed of the fan motor of the range hood is calculated according to the current opening angle; the expression of the maximum speed is ωmax=h(θ); wherein ωmax is the maximum speed, θ is the current opening angle, and the maximum speed ωmax is the maximum speed at which the fan motor allows the range hood smoke baffle to be opened when the current opening angle θ and the fan motor is opened with the maximum torque; Determine whether the current rotation speed is less than or equal to the maximum rotation speed. If so, determine whether the current opening angle reaches a preset smoke baffle angle. If so, control the range hood smoke baffle to stop moving.

7. A range hood smoke baffle control method according to claim 6, characterized in that: The method further comprises: Obtaining the current speed of the fan motor; If it is determined that the current speed is greater than the maximum speed, the current speed is reduced until the reduced current speed is less than or equal to the maximum speed, and then it is determined whether the current opening angle reaches the preset smoke baffle angle. If so, the range hood smoke baffle is controlled to stop moving.

8. A range hood smoke baffle control device, characterized in that: The range hood smoke shield is installed on the fixed axis of the range hood and rotates around the fixed axis. A gyroscope sensor is installed on the range hood smoke shield. The gyroscope sensor is parallel to the range hood smoke shield and moves with the smoke shield. The gyroscope sensor and the range hood smoke shield are relatively stationary during the movement. The device includes: a current rotation angle acquisition unit, configured to acquire a current rotation angle output by the gyro sensor; a relative angle determination unit configured to determine a relative angle of the current rotation angle relative to a first preset angle, wherein the first preset angle indicates a rotation angle corresponding to the gyro sensor when the smoke baffle of the range hood is in a closed position; The current position determination unit is configured to determine the current position of the range hood smoke baffle based on the relative angle, wherein the current position indicates a rotation angle of the range hood smoke baffle relative to the closed position.

9. A range hood, characterized in that: The range hood comprises the range hood smoke baffle control device according to claim 8.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; Wherein, the processor is configured to execute the instruction to implement a range hood smoke damper control method as claimed in any one of claims 1 to 7.

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