Range hood lifting control method and device

Abstract

The present invention discloses a range hood lifting control method, belonging to the technical field of range hoods. The range hood comprises an upper housing, a lower housing, a drive mechanism, and a detection assembly. The drive mechanism is used to drive the lower housing to move relative to the upper housing, and the detection assembly is used to obtain the distance between the lower housing and the upper housing in real time. The method comprises: receiving detection data acquired by the detection assembly; determining the distance between the lower housing and the upper housing based on the detection data; and sending a control instruction to the drive mechanism based on the distance to control the movement of the lower housing.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood control method and device. Background Art

[0002] In a range hood with a lifting function, the lower housing can move relative to the upper housing, thereby achieving lifting. Such a range hood can adjust the position of the lower housing according to different usage scenarios.

[0003] In the prior art, range hoods with a lift function have three micro switches located at the uppermost and lowermost limits, and in the middle of the lower housing. During lift control, the micro switches are triggered to stop the lower housing at the corresponding position.

[0004] In the related art, the lower box of the range hood can only be started and stopped at a fixed position, and has the defect of inflexible lifting position. This method is difficult to adapt to changing application scenarios, resulting in a poor user experience. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defect of poor range hood lifting control experience in the prior art, and to provide a range hood lifting control method and device.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a range hood lifting control method, wherein the range hood includes: an upper housing, a lower housing, a drive mechanism, and a detection component; the drive mechanism is used to drive the lower housing to move relative to the upper housing, and the detection component is used to obtain the distance between the lower housing and the upper housing in real time;

[0008] The method comprises:

[0009] Receiving detection data acquired by the detection component;

[0010] Determine the distance from the lower box to the upper box according to the detection data;

[0011] A control instruction is sent to the driving mechanism according to the distance to control the movement of the lower box.

[0012] In one embodiment, the voltage across the detection component changes as the lower box moves relative to the upper box, and the detection data includes the voltage across the detection component.

[0013] In one embodiment, determining the distance between the lower box and the upper box according to the detection data includes:

[0014] Obtaining the movement direction of the lower box;

[0015] Obtaining a corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction;

[0016] The distance is obtained according to the voltage based on the corresponding relationship.

[0017] In one embodiment, determining the corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction includes:

[0018] When the movement direction is close to the upper box, the corresponding relationship is V=log d x+e, V is the voltage, x is the distance from the lower box to the upper box, d, e are fitting coefficients; and / or

[0019] When the movement direction is away from the upper box, the corresponding relationship is V is the voltage, x is the distance from the lower box to the upper box, and d and f are fitting coefficients.

[0020] In one embodiment, the method further comprises:

[0021] obtaining voltages across the detection component at different distances from the lower box to the upper box when in different movement directions;

[0022] The corresponding relationship is obtained by fitting the distance from the lower box to the upper box and the corresponding voltage in different movement directions.

[0023] In one embodiment, sending a control instruction to the driving mechanism according to the relative position to control the movement of the lower box includes:

[0024] A stopping instruction is sent to the driving mechanism according to the relative position to drive the lower box to stop at a first acceleration.

[0025] In one embodiment, the sending of a control instruction to the driving mechanism according to the relative position to control the movement of the lower box further includes:

[0026] A braking instruction is sent to the driving mechanism according to the relative position to drive the lower box to start at a second acceleration, where the value of the second acceleration is greater than the value of the first acceleration.

[0027] In a second aspect, an embodiment of the present invention provides a range hood lifting control device, the range hood lifting control device being applied to a range hood, the range hood comprising: an upper housing, a lower housing, a drive mechanism, and a detection component; the drive mechanism being configured to drive the lower housing to move relative to the upper housing, and the detection component being configured to obtain a real-time distance between the lower housing and the upper housing;

[0028] The device comprises:

[0029] A receiving module, configured to receive detection data acquired by the detection component;

[0030] a determination module, configured to determine a distance from the lower box to the upper box based on the detection data;

[0031] A control module is used to send a control instruction to the driving mechanism according to the distance to control the movement of the lower box.

[0032] In a third aspect, an embodiment of the present invention provides a range hood, which includes the range hood lifting control device described in the second aspect.

[0033] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the range hood lifting control method provided in the first aspect is implemented.

[0034] The positive progress effect of the present invention is:

[0035] The range hood lifting control method provided by the embodiment of the present invention effectively solves the problem in related technologies that the range hood lifting position is fixed and difficult to control. It enables the lower box to start and stop at any position in the full stroke, thus optimizing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a structural schematic diagram of a range hood according to an exemplary embodiment;

[0037] Figure 2 is a structural schematic diagram of a range hood according to another exemplary embodiment;

[0038] Figure 3 is a schematic structural diagram of a drive assembly according to an exemplary embodiment;

[0039] Figure 4 is a partial structural diagram of a detection mechanism according to an exemplary embodiment;

[0040] Figure 5 is a flow chart of a range hood lifting control method according to an exemplary embodiment;

[0041] Figure 6 is a flowchart of step S502 according to an exemplary embodiment;

[0042] Figure 7 is a flow chart of a range hood lifting control method according to another exemplary embodiment;

[0043] Figure 8 is a block diagram of a range hood lifting control device according to an exemplary embodiment;

[0044] Figure 9 is a block diagram of a determination module according to an exemplary embodiment;

[0045] Figure 10 is a block diagram of a range hood lifting control device according to another exemplary embodiment.

[0046] In the above drawings, the meanings of the reference numerals are as follows:

[0047] 100. Upper box;

[0048] 200. Lower box;

[0049] 300, driving mechanism, 310, driving motor, 320, transmission assembly, 321, threaded rod, 322, movable part;

[0050] 400. Detection mechanism, 410. Detection assembly, 411. Detection member, 411a. First detection member, 411b. Second detection member, 411c. First fixed connection point, 411d. Second fixed connection point, 412. Movable part, 420. Control assembly. DETAILED DESCRIPTION

[0051] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0052] Example 1

[0053] Before introducing the specific method provided by the present invention, it should be noted that in this embodiment, "upward" and "downward" are both based on the conventional usage of the range hood.

[0054] Figure 1 is a schematic structural diagram of a range hood according to different exemplary embodiments. Figure 2 FIG. 1 is a structural diagram of a range hood according to another exemplary embodiment. Figure 1 and Figure 2 As shown, the range hood includes an upper box body 100 , a lower box body 200 , a driving mechanism 300 and a detection mechanism 400 .

[0055] The upper case 100 and the lower case 200 can move relative to each other. Optionally, the upper case 100 is fixed, and the lower case 200 is movably connected to the upper case 100 and can move upward or downward relative to the upper case 100. Optionally, the upper case 100 and the lower case 200 are connected by slide rails and slide grooves, and the movement direction of the lower case 200 relative to the upper case 100 is limited by the slip ring and the slide groove to ensure the stability of relative movement. A suction component is provided in the lower case 200 for sucking out oil smoke. By regulating the movement of the lower case 200 relative to the upper case 100, the range hood can be sucked at different heights, which is suitable for different scene requirements and ensures the suction effect of the range hood.

[0056] The driving mechanism 300 is connected to the upper box body 100 and the lower box body 200 and is used to drive the lower box body 200 to move relative to the upper box body 100 . Figure 3 FIG. 1 is a schematic diagram showing the structure of a drive assembly according to an exemplary embodiment. Figure 3 As shown, the driving mechanism 300 includes a driving assembly and a transmission assembly 320. The driving assembly includes a Figure 3 The transmission assembly 320 includes a threaded rod 321 connected to the drive motor 310. The threaded rod 321 is rotatably fixed to the interior of the upper housing 100 and is driven by the drive motor 310 to rotate around a fixed axial direction. Optionally, the threaded rod 321 is fixed to the upper housing 100 by components such as bearings and connecting plates, so that the threaded rod 321 only produces circular motion when driven by the motor 310. In addition, the axial direction of the threaded rod 321 is aligned with the lower housing 200 ( Figure 3 The transmission assembly 320 further includes a movable member 322 threadedly connected to the threaded rod 321. When the threaded rod 321 is driven to rotate by the drive motor 310, the movable member 322 moves upward or downward along the threaded rod 321.

[0057] Optionally, the direction of rotation of the threaded rod 321 driven by the drive motor 310 can be changed to change the direction of movement of the movable member 322. The movable member 322 is also connected to the lower housing 200. In this way, the drive mechanism 300 enables the lower housing 200 to move relative to the upper housing 100. Furthermore, by stopping the drive motor 310, the lower housing 200 stops moving and stabilizes in its current position.

[0058] Refer again Figure 2The range hood provided by the embodiment of the present invention also includes a detection mechanism 400. The detection mechanism 400 is connected to the lower box body 200 and is used to obtain the distance from the lower box body 200 to the upper box body 100 in real time. In this case, the driving mechanism 300 is also used to control the movement of the lower box body 200 relative to the upper box body 100 based on the distance detected by the detection mechanism 400. In this way, through the cooperation of the driving mechanism 300 and the detection mechanism 400, the lower box body 200 can be started and stopped at any position in the movement range of the lower box body 200, thereby solving the defect of the related art that the lower box body 200 can only be started and stopped at a fixed position. The use of this range hood can realize free control of the position of the lower box body 200, and can be flexibly configured according to the oil smoke situation and user usage habits, and realize the control strategy of small smoke high position and large smoke low position in the specific application process.

[0059] In one embodiment, the detection mechanism 400 includes a detection component 410 and a control component 420. The voltage across the detection component 410 changes as the lower housing 200 moves relative to the upper housing 100. The control component 420 is electrically connected to the detection component 410 and is configured to detect the voltage across the detection component 410 and determine the distance between the lower housing and the upper housing based on the voltage. Furthermore, the control component 420 is configured to send a control command to the drive mechanism 300 based on the distance to brake or stop the drive motor 310.

[0060] Figure 4 FIG. 1 is a schematic diagram of a partial structure of a detection mechanism according to an exemplary embodiment. Figure 4 Shown and combined Figure 1 , the detection assembly 410 includes a detection member 411 and a movable portion 412. The detection member 411 and the upper box body 100 ( Figure 4 (not shown) remains relatively fixed. Figure 2 , the detection member 411 is fixed in the upper box 100. The detection member 411 includes a fixed connection point, which is electrically connected to the control component 420. Optionally, the upper end of the detection member 411 is provided with the fixed connection point to facilitate the setting of a connecting line or a welding point. The movable portion 412 is used to move with the lower box 200 ( Figure 4 The movable portion 412 is electrically connected to the detection member 411 while the lower housing 200 moves. This means that the movable portion 412 is electrically connected to the detection member 411 and the control member 420. As the movable portion 412 moves, the voltage of the portion of the detection member 411 electrically connected to the control member 420 changes. For example, as the movable portion 412 moves, the resistance of the portion of the detection member 411 electrically connected to the control member 420 changes synchronously, thereby causing the voltage to change. At this point, the detection member 411 is equivalent to an adjustable resistor.

[0061] In one example, detection assembly 410 includes a detection member 411. Optionally, a fixed connection point is provided at the upper end of detection member 411 for electrical connection to control assembly 420. A movable portion 412 is electrically connected to the rest of detection member 411. In this way, movable portion 412 forms an electrically connected circuit between detection member 411 and control assembly 420, allowing control assembly 420 to detect the voltage across the electrically connected detection member 411.

[0062] In one example, the detection assembly 410 includes two detection members 411 arranged in parallel. Figure 4 The detection member 411 includes a first detection member 411a and a second detection member 411b arranged in parallel. The first detection member 411a has a first fixed connection point 411c, and the second detection member 411b has a second fixed connection point 411d. The first fixed connection point 411c and the second fixed connection point 411d are electrically connected to the control component 420. The first detection member 411a and the second detection member 411b are also electrically connected via a movable portion 412. In this way, the movable portion 412 forms an electrically connected circuit between the first detection member 411a, the second detection member 411b, and the control component 420, allowing the control component 420 to obtain the voltage across the electrically connected first detection member 411a and the second detection member 411b.

[0063] Optionally, the movable portion 412 is disposed on the movable member 322 in the drive mechanism 300. For example, the movable portion 412 is a conductive metal spring disposed on the movable member 322. As the movable member 322 moves along the threaded rod 321, the movable portion 412 contacts different portions of the detection member 411, thereby causing a voltage change on the detection member 411 that is electrically connected to the control assembly 420.

[0064] Optionally, the detection member 411 extends along the direction of movement of the lower housing 200 relative to the upper housing 100. Furthermore, the extension length of the detection member 411 is greater than or equal to the travel distance of the lower housing 200 relative to the upper housing 100. In this way, any position change within the full travel range of the lower housing 200 can be reflected in the form of a voltage change on the detection member 411.

[0065] Optionally, the detection member 411 bends and extends in a direction from the lower box body 200 to the upper box body 100. Figure 4As shown, the first detection member 411a and the second detection member 411b have continuously distributed bending sections to achieve bending and extension. In this way, the full travel distance of the detection member 411 is increased, so as to refine the voltage change degree of the detection member 411 that can be detected by the control component 420, and further refine the distance between the lower box 200 and the upper box 100 that can be detected by the detection mechanism 400. Optionally, the detection member 411 is a carbon film printed circuit board. In this case, the carbon film printed circuit board is printed with a zigzag structure to achieve the bending and extension of the detection member 411.

[0066] To sum up, the range hood provided by the embodiment of the present invention can obtain the distance from the lower box to the upper box in real time, and thus realize starting and stopping at any position in the full stroke of the lower box, solving the defect in the related technology that the lower box can only stop at a fixed position, and optimizing the user experience.

[0067] Example 2

[0068] Based on the range hood provided in the above-mentioned embodiment 1, embodiment 2 of the present invention provides a range hood lifting control method. Figure 5 FIG. 1 is a flow chart of a range hood lifting control method according to an exemplary embodiment. Figure 5 As shown, the control method includes:

[0069] Step S501: Receive the detection data acquired by the detection agency.

[0070] In this embodiment of the present invention, the detection mechanism includes a detection component. The voltage across the detection component changes as the lower housing moves relative to the upper housing. In this case, the detection data includes the voltage across the detection component. Furthermore, in conjunction with the range hood described above, the voltage across the portion electrically connected to the detection element 411 and the control component 420 is specifically obtained.

[0071] Step S502: Determine the distance from the lower box to the upper box according to the detection data.

[0072] Figure 6 is a flowchart of step S502 according to an exemplary embodiment. Figure 6 As shown, step S502 specifically includes:

[0073] Step S5021: Acquire the movement direction of the lower box.

[0074] Specifically, the movement direction of the lower box body includes movement toward the upper box body and movement away from the upper box body.

[0075] Step S5022: Obtain the corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction.

[0076] In one example, a corresponding relationship list of the distance and voltage under different movement directions is obtained and stored in advance, and in step S5022, the corresponding relationship list is determined according to the current movement direction of the lower box.

[0077] In one example, when the movement direction of the lower box is to move closer to the upper box, the corresponding relationship satisfies: V=log d x+e. Where V is the voltage, x is the distance from the lower box to the upper box, and d and e are fitting coefficients. When the lower box moves away from the upper box, the corresponding relationship satisfies: Where V is the voltage, x is the distance from the lower box to the upper box, and d and f are fitting coefficients.

[0078] Step S5023: Acquire the distance according to the voltage based on the corresponding relationship.

[0079] When the corresponding relationship is stored in a list format, step S5023 is implemented by looking up a table. When the corresponding relationship is stored in a preset function format, step S5023 calculates the distance based on the preset function and the currently acquired voltage.

[0080] Continue to refer to Figure 5 , after step S502, step S503 is performed, as follows.

[0081] Step S503: Send a control instruction to the driving mechanism according to the distance to control the movement of the lower box.

[0082] In one example, step S503 specifically includes: sending a stopping instruction to the driving mechanism according to the distance to drive the lower box to stop at a first acceleration. In this case, the lower box will stop stably at a set position after stopping.

[0083] A braking instruction is sent to the driving mechanism according to the distance to drive the lower box to start at a second acceleration, where the value of the second acceleration is greater than the value of the first acceleration.

[0084] In this way, the lower box will show a movement pattern of fast start and slow stop. a The b+c control method regulates the duty cycle of the drive signal to drive the lower box to exhibit a motion pattern of rapid start-up and slow stop. In this case, slow stop facilitates accurate acquisition of the current distance between the lower box and the upper box, and more specifically, facilitates accurate acquisition of the voltage of the portion of the detection member that is currently electrically connected to the control component. In this way, precise control of the lower box to stop at the desired position is achieved, optimizing the user experience. Moreover, in the embodiment of the present invention, the movement of the lower box is controlled by the drive mechanism through stepless speed regulation to further enhance the user experience.

[0085] To sum up, the range hood lifting control method provided by the embodiment of the present invention can detect the distance from the lower box to the upper box in real time and accurately, thereby realizing lifting and lowering control at any position in the full stroke of the lower box, so that the lower box can stay at any desired position in the full stroke, optimizing the user experience.

[0086] In one embodiment, Figure 7 FIG. 1 is a flow chart of a range hood lifting control method according to another exemplary embodiment. Figure 7 As shown, the range hood lifting control method provided by the embodiment further includes:

[0087] Step S701: Acquire the voltages across the detection component at different distances from the lower box to the upper box in different movement directions.

[0088] Optionally, the movement of the lower box is controlled in a fast start and slow stop manner, and the voltages at both ends of the detection component at different distances between the lower box and the upper box are obtained respectively in the two directions of the lower box approaching the upper box and away from the upper box. It should be noted that when performing step S701, the logarithm y=log a The b+c control method controls the movement of the lower box.

[0089] Step S702: Obtain the corresponding relationship according to the distance from the lower box to the upper box and the corresponding voltage in different movement directions.

[0090] According to the data obtained in step S702, the corresponding relationship is obtained by curve fitting, or the corresponding relationship is obtained in a list.

[0091] In summary, the range hood lifting control method provided by the embodiment of the present invention effectively solves the problem of the range hood lifting position being fixed and difficult to control in the related art. It enables the lower box to start and stop at any position in the full stroke, thus optimizing the user experience.

[0092] Example 3

[0093] Based on the range hood lift control method provided in Example 2 above, this embodiment of the present invention provides a range hood lift control device. The range hood comprises an upper housing, a lower housing, a drive mechanism, and a detection component. The drive mechanism is configured to drive the lower housing to move relative to the upper housing, and the detection component is configured to obtain the distance between the lower housing and the upper housing in real time.

[0094] Figure 8 FIG. 1 is a block diagram of a range hood lifting control device according to an exemplary embodiment. Figure 8As shown, the apparatus includes: a receiving module 810 , a determining module 820 and a controlling module 830 .

[0095] The receiving module 810 is used to receive the detection data acquired by the detection component.

[0096] The determination module 820 is configured to determine the distance from the lower box to the upper box according to the detection data.

[0097] The control module 830 is configured to send a control instruction to the driving mechanism according to the distance to control the movement of the lower box.

[0098] In one embodiment, the voltage across the detection component changes as the lower box moves relative to the upper box, and the detection data includes the voltage across the detection component.

[0099] In one embodiment, Figure 9 FIG. 1 is a block diagram of a determination module according to an exemplary embodiment. Figure 9 As shown, the determination module 820 includes: a first acquisition unit 821 , a second acquisition unit 822 , and a third acquisition unit 823 .

[0100] The first acquiring unit 821 is used to acquire the movement direction of the lower box.

[0101] The second acquiring unit 822 is configured to acquire a corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction.

[0102] The third acquiring unit 823 is configured to acquire the distance according to the voltage based on the corresponding relationship.

[0103] In one embodiment, the second acquiring unit is specifically configured to:

[0104] When the movement direction is close to the upper box, the corresponding relationship is V=log d x+e, V is the voltage, x is the distance from the lower box to the upper box, d, e are fitting coefficients; and / or

[0105] When the movement direction is away from the upper box, the corresponding relationship is V is the voltage, x is the distance from the lower box to the upper box, and d and f are fitting coefficients.

[0106] In one embodiment, Figure 10 is a block diagram of a range hood lifting control device according to another exemplary embodiment, the device further comprising:

[0107] An acquisition module 840 is used to acquire the voltage across the detection component at different distances from the lower box to the upper box in different movement directions;

[0108] The fitting module 850 is used to fit the corresponding relationship according to the distance from the lower box to the upper box and the corresponding voltage in different movement directions.

[0109] In one embodiment, the control module 830 is specifically configured to send a stopping instruction to the driving mechanism according to the relative position, so as to drive the lower box to stop at a first acceleration.

[0110] In one embodiment, the control module 830 is further configured to send a braking instruction to the driving mechanism according to the relative position to drive the lower box to start at a second acceleration, wherein the value of the second acceleration is greater than the value of the first acceleration.

[0111] The range hood lifting control device provided by the embodiment of the present invention can accurately detect the distance from the lower box to the upper box in real time, thereby realizing lifting and lowering control at any position in the full stroke of the lower box, so that the lower box can stay at any desired position in the full stroke, optimizing the user experience.

[0112] Example 4

[0113] An embodiment of the present invention provides a range hood, which includes the range hood lifting control device described in the above embodiment 3.

[0114] The range hood provided by the embodiment of the present invention can accurately detect the distance from the lower box to the upper box in real time, thereby realizing lifting and lowering control at any position in the full stroke of the lower box, so that the lower box can stay at any desired position in the full stroke, optimizing the user experience.

[0115] Example 5

[0116] This embodiment provides a computer-readable storage medium storing a computer program, which implements the power load forecasting method of embodiment 1 when executed by a processor.

[0117] The readable storage medium may include, but is not limited to, a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0118] In a possible implementation manner, the present invention may also be implemented in the form of a program product, which includes program code. When the program product is run on an electronic device, the program code is used to enable the electronic device to execute the range hood control method provided in Example 1.

[0119] The program code for executing the present invention may be written in any combination of one or more programming languages, and the program code may be executed entirely on the electronic device, partially on the electronic device, as an independent software package, partially on the electronic device and partially on a remote device, or entirely on the remote device.

[0120] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A range hood lifting control method, characterized in that: The range hood comprises: an upper housing, a lower housing, a driving mechanism and a detection mechanism; the driving mechanism is used to drive the lower housing to move relative to the upper housing, and the detection mechanism is used to obtain the distance from the lower housing to the upper housing in real time; The method comprises: Receiving the test data obtained by the testing agency; Determine the distance from the lower box to the upper box according to the detection data; sending a control instruction to the driving mechanism according to the distance to control the movement of the lower box; The detection mechanism includes a detection component, the voltage across the detection component changes as the lower box moves relative to the upper box, and the detection data includes the voltage across the detection component; The determining the distance between the lower box and the upper box according to the detection data includes: Obtaining the movement direction of the lower box; Obtaining a corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction; Acquiring the distance according to the voltage according to the corresponding relationship; The acquiring, according to the movement direction, a corresponding relationship between the distance from the lower box to the upper box and the voltage, includes: When the movement direction is close to the upper box, the corresponding relationship is , V is the voltage, x is the distance from the lower box to the upper box, d, e are fitting coefficients; and / or When the movement direction is away from the upper box, the corresponding relationship is , V is the voltage, x is the distance from the lower box to the upper box, d, f are fitting coefficients.

2. The range hood lifting control method according to claim 1, characterized in that: The method further comprises: obtaining voltages across the detection component at different distances from the lower box to the upper box when in different movement directions; The corresponding relationship is obtained by fitting the distance from the lower box to the upper box and the corresponding voltage in different movement directions.

3. The range hood lifting control method according to claim 1, characterized in that: The sending of a control instruction to the driving mechanism according to the distance to control the movement of the lower box includes: A stopping instruction is sent to the driving mechanism according to the distance to drive the lower box to stop at a first acceleration.

4. The range hood lifting control method according to claim 3, characterized in that: The step of sending a control instruction to the driving mechanism according to the distance to control the movement of the lower box further includes: A braking instruction is sent to the driving mechanism according to the distance to drive the lower box to start at a second acceleration, where the value of the second acceleration is greater than the value of the first acceleration.

5. A range hood lifting control device, characterized in that: The range hood lifting control device is applied to a range hood, which comprises an upper housing, a lower housing, a driving mechanism, and a detection mechanism; the driving mechanism is used to drive the lower housing to move relative to the upper housing, and the detection mechanism is used to obtain the distance between the lower housing and the upper housing in real time; The device comprises: A receiving module, configured to receive the detection data acquired by the detection mechanism; a determination module, configured to determine a distance from the lower box to the upper box based on the detection data; a control module, configured to send a control instruction to the driving mechanism according to the distance to control the movement of the lower box; The detection mechanism includes a detection component, the voltage across the detection component changes as the lower box moves relative to the upper box, and the detection data includes the voltage across the detection component; The determination module includes: a first acquisition unit, a second acquisition unit, and a third acquisition unit; The first acquiring unit is used to acquire the movement direction of the lower box; The second acquiring unit is configured to acquire a corresponding relationship between the distance from the lower box to the upper box and the voltage according to the movement direction; The third acquiring unit is configured to acquire the distance according to the voltage based on the corresponding relationship; The second acquiring unit is specifically configured to: When the movement direction is close to the upper box, the corresponding relationship is , V is the voltage, x is the distance from the lower box to the upper box, d, e are fitting coefficients; and / or When the movement direction is away from the upper box, the corresponding relationship is , V is the voltage, x is the distance from the lower box to the upper box, d, f are fitting coefficients.

6. A range hood, characterized in that: The range hood includes the range hood lifting control device according to claim 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the range hood lifting control method according to any one of claims 1 to 4 is implemented.

Images