Range hood operation control method, range hood and computer readable storage medium

Abstract

The invention relates to the field of household appliances, in particular to an operation control method of a range hood, the range hood and a computer readable storage medium, and the method comprises the following steps: acquiring first noise data of the range hood when the range hood operates at each gear to determine whether abnormal noise exists when the range hood operates at each gear; if the abnormal sound exists in the range hood, acquiring second noise data of the rotating speed of the range hood from starting to a rotating speed threshold value for the gear with the abnormal sound, and determining a rotating speed interval without the abnormal sound based on the second noise data; based on the rotating speed corresponding to the gear with the abnormal sound, a rotating speed interval which is closest to the rotating speed and does not have the abnormal sound is determined, a final rotating speed which is closest to the rotating speed is selected from the closest rotating speed interval, and the range hood is controlled to operate at the final rotating speed when operating at the gear. Therefore, abnormal noise generated in the operation process of the range hood is avoided.

Description

Technical Field

[0001] The present application relates to the field of household electrical appliances, and in particular to an operation control method of a range hood, a range hood, and a computer-readable storage medium. Background Art

[0002] During the development phase of the range hood, the speed is designed to avoid the range where resonance and abnormal sound occur. For example, if there is abnormal sound at 600rpm, the speed will be set at 650rpm to 750rpm to avoid users hearing obvious abnormal sound during use.

[0003] However, the environment in the user's home is unpredictable. For example, if the user's home has a public pipeline or direct exhaust, and the user cooks at peak or low fire usage periods, the resistance outside the smoke pipe will change greatly. At this time, the actual speed of the range hood may drop below 650rpm, or even drop to around 600rpm, causing abnormal noise. Summary of the invention

[0004] Based on this, it is necessary to provide an operation control method of a range hood, a range hood and a computer-readable storage medium to address the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides an operation control method of a range hood, the method comprising:

[0006] Acquire first noise data of the range hood when it is running at each gear position, so as to determine whether there is abnormal sound when it is running at each gear position;

[0007] If yes, for the gear position with abnormal sound, obtain second noise data of the range hood speed from startup to the speed threshold, and determine the speed interval without abnormal sound based on the second noise data;

[0008] Based on the speed corresponding to the gear position with abnormal noise, the speed range closest to the speed without abnormal noise is determined, and the final speed closest to the speed is selected from the closest speed range, and the range hood is controlled to run at the final speed when running in this gear position.

[0009] In some embodiments, obtaining the first noise data of the range hood when it is running at each gear position to determine whether there is abnormal sound when it is running at each gear position includes:

[0010] Based on the first noise data of the range hood when it is running at each gear, first noise curves are generated respectively;

[0011] Based on the peak value of each of the first noise curves and the effective value corresponding to each of the first noise data, it is determined whether there is abnormal noise when each gear is running.

[0012] In some embodiments, determining whether there is abnormal sound when each gear is running based on the peak value of each first noise curve and the effective value corresponding to each first noise data includes:

[0013] If the peak value of the first noise curve and the effective value corresponding to the first noise data are greater than or equal to the noise threshold, it is determined that there is no abnormal sound when the range hood is running at this gear; otherwise, it is determined that there is an abnormal sound when the range hood is running at this gear.

[0014] In some embodiments, obtaining second noise data of the range hood during a period from when the range hood is started to when the range hood reaches a speed threshold, and determining a speed interval in which no abnormal sound exists based on the second noise data comprises:

[0015] generating a second noise curve based on the second noise data;

[0016] generating a noise limit curve based on the second noise curve;

[0017] generating order curves of various orders based on the second noise data;

[0018] Based on the order curves of each order and the noise limit curve, a speed range in which no abnormal sound exists is determined.

[0019] In some embodiments, determining the speed range without abnormal sound based on the order curves of each order and the noise limit curve includes:

[0020] Selecting a target order curve having the highest degree of overlap with the noise limit curve from the order curves of each order;

[0021] The overlapped interval between the target order curve and the noise limit curve is used as the speed interval where abnormal noise exists;

[0022] Based on the rotation speed range in which the abnormal sound exists, a rotation speed range in which the abnormal sound does not exist is determined.

[0023] In some embodiments, the rotation speed threshold is greater than the rotation speed of the range hood when it is running at the highest gear.

[0024] In some embodiments, the noise threshold is 20Db.

[0025] In a second aspect, an embodiment of the present application provides a range hood, comprising a processor, wherein the processor is used to execute the method described in the first aspect.

[0026] In some embodiments, the range hood further includes a speed sensor and a noise collection device connected to the processor, the speed sensor is used to collect the speed of the range hood, and the noise collection device is used to obtain first noise data of the range hood when it is operating in each gear and second noise data from startup to a speed threshold.

[0027] In a second aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method described in the first aspect.

[0028] The present application has the following inventive effects: based on the speed corresponding to the gear position where the abnormal sound exists, the speed range closest to the speed without the abnormal sound is determined, and the final speed closest to the speed is selected from the closest speed range, and the range hood is controlled to operate at the final speed when operating in the gear position, thereby avoiding the generation of abnormal sound during the operation of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of module connection of a range hood in one embodiment of the present invention;

[0030] Figure 2 It is a flow chart of an operation control method of a range hood in one embodiment of the present invention;

[0031] Figure 3 Schematic diagram of the process of an abnormal sound detection method in one embodiment of the present invention;

[0032] Figure 4 is a schematic diagram of a first noise curve in an exemplary embodiment of the present invention;

[0033] Figure 5 It is a flow chart of a method for determining a speed range without abnormal sound in one embodiment of the present invention;

[0034] Figure 6 It is a schematic diagram of a specific flow chart of a method for determining a speed range without abnormal sound in one embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of a second noise curve, a noise limit curve, and order curves of various orders in an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present invention. For ordinary technicians in this field, the present invention can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0037] As shown in the present invention and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device may also include other steps or elements.

[0038] Although the present invention makes various references to certain modules in the system according to an embodiment of the present invention, any number of different modules can be used and run on a computing device and / or processor. The modules are only illustrative, and different aspects of the system and method can use different modules.

[0039] It should be understood that when a unit or module is described as being "connected," "coupled" to other units, modules, or blocks, it may refer to being directly connected or coupled, or communicating with other units, modules, or blocks, or there may be intermediate units, modules, or blocks, unless the context clearly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the associated listed items.

[0040] like Figure 1 As shown, an embodiment of the present invention proposes a range hood, including a processor, and a speed sensor and a noise collection device connected to the processor, the speed sensor is used to collect the speed of the range hood, and the noise collection device is used to obtain first noise data of the range hood when it is running in each gear and second noise data from startup to a speed threshold.

[0041] The noise collecting device is, for example, a microphone.

[0042] The rotation speed sensor may be an acceleration sensor or the like, and the rotation speed of the range hood may be calculated based on the collected data.

[0043] The processor is used to obtain first noise data of the range hood when it is running in each gear to determine whether there is an abnormal sound when it is running in each gear; if there is, for the gear with the abnormal sound, obtain second noise data of the range hood speed from startup to a speed threshold, and determine a speed range without abnormal sound based on the second noise data; based on the speed corresponding to the gear with the abnormal sound, determine a speed range closest to the speed without abnormal sound, and select a final speed closest to the speed from the closest speed range, and control the range hood to run at the final speed when it is running in the gear.

[0044] The processor is also used to generate first noise curves based on the first noise data of the range hood when it is running at each gear; based on the peak value of each of the first noise curves and the effective value corresponding to each of the first noise data, to determine whether there is abnormal sound when each gear is running.

[0045] The processor is also used to determine that there is no abnormal sound when the range hood is running at this gear if the peak value of the first noise curve and the effective value corresponding to the first noise data are greater than or equal to a noise threshold; otherwise, it is determined that there is an abnormal sound when the range hood is running at this gear.

[0046] The processor is also used to generate a second noise curve based on the second noise data; generate a noise limit curve based on the second noise curve; generate order curves of each order based on the second noise data; and determine a speed range in which there is no abnormal sound based on the order curves of each order and the noise limit curve.

[0047] The processor is also used to select a target order curve with the highest degree of overlap with the noise limit curve from the order curves of each order; use the overlapping interval between the target order curve and the noise limit curve as the speed interval where abnormal sound exists; and determine the speed interval where abnormal sound does not exist based on the speed interval where abnormal sound exists.

[0048] Based on the above range hood, Figure 2 As shown, the embodiment of the present application also provides an operation control method of a range hood, the method comprising:

[0049] S202: Acquire first noise data of the range hood when it is running at each gear position to determine whether there is abnormal sound when it is running at each gear position.

[0050] The first noise data of the range hood when it is running at each gear is obtained by a noise collecting device.

[0051] For example, the range hood includes three gears, a low gear, a middle gear and a high gear.

[0052] S204: If yes, for the gear position with abnormal sound, obtain second noise data of the range hood speed from startup to speed threshold, and determine the speed range without abnormal sound based on the second noise data.

[0053] The second noise data of the range hood during the period from the start-up to the speed threshold is acquired by the noise collection device.

[0054] The speed threshold is greater than the speed of the range hood when it is running at the highest gear. The speed of the range hood when it is running at the highest gear is, for example, 700 rpm, and the speed threshold can be set to 800 rpm.

[0055] S206: Based on the speed corresponding to the gear position with abnormal noise, determine the speed range closest to the speed without abnormal noise, select the final speed closest to the speed from the closest speed range, and control the range hood to run at the final speed when running in the gear position.

[0056] In this embodiment, based on the speed corresponding to the gear position where the abnormal sound occurs, the speed range closest to the speed where there is no abnormal sound is determined, and the final speed closest to the speed is selected from the closest speed range, and the range hood is controlled to operate at the final speed when operating in this gear position, thereby avoiding the generation of abnormal sound during the operation of the range hood.

[0057] In some embodiments, Figure 3 As shown, the obtaining of the first noise data of the range hood when it is running at each gear position to determine whether there is an abnormal sound when it is running at each gear position includes:

[0058] S302: generating first noise curves respectively based on first noise data of the range hood when the range hood is operated at each gear position;

[0059] S304: Determine whether there is abnormal sound when each gear is running based on the peak value of each of the first noise curves and the effective value corresponding to each of the first noise data.

[0060] In some embodiments, determining whether there is abnormal sound when each gear is running based on the peak value of each first noise curve and the effective value corresponding to each first noise data includes:

[0061] If the peak value of the first noise curve and the effective value corresponding to the first noise data are greater than or equal to the noise threshold, it is determined that there is no abnormal sound when the range hood is running at this gear; otherwise, it is determined that there is an abnormal sound when the range hood is running at this gear.

[0062] The noise threshold is, for example, 20 Db.

[0063] In an exemplary embodiment, the first noise curve of the range hood when running at a certain gear is as follows: Figure 4 As shown, the horizontal axis represents frequency, which ranges from [0-1000HZ], and the vertical axis represents noise.

[0064] like Figure 4 As shown, the 0-1000RMS value is 51.15Db. Users can set two modes: silent and standard. The silent mode corresponds to a threshold of 20Db, and the corresponding frequency sweep curve is 31.15Db on the horizontal axis. This standard can also identify slight abnormal sounds. The frequency sweep curve corresponding to 20dB in steady state also has a narrower speed range without abnormal sounds. The standard mode corresponds to a threshold of 15Db, and the corresponding frequency sweep curve is 36.15Db on the horizontal axis. This standard will miss some relatively slight abnormal sounds. Due to the user's use scenario in the kitchen, it is unlikely to capture some slight abnormal sounds, so the standard mode is more suitable for some less picky users. The frequency sweep curve corresponding to 15Db in steady state has a wider speed range without abnormal sounds.

[0065] from Figure 4 It can be seen that there is a noise peak at 308Hz, which is 43.56Db. The effective value of the noise in the range of 0 to 1000Hz is 51.15Db. The calculated difference is 51.15Db-43.56Db=7.59Db. The difference is less than 20Db, indicating that the contribution of this frequency to the total noise is too high. It is determined that there is abnormal sound when the range hood is running in this gear.

[0066] In some embodiments, Figure 5 As shown, the obtaining of second noise data of the range hood speed from startup to a speed threshold, and determining a speed interval without abnormal sound based on the second noise data includes:

[0067] S502: generating a second noise curve based on the second noise data;

[0068] S504: generating a noise limit curve based on the second noise curve;

[0069] For example, the second noise curve is shifted downward by 15 dB to obtain the noise limit curve.

[0070] S506: generating order curves of various orders based on the second noise data;

[0071] S508: Determine a speed range in which no abnormal sound exists based on the order curves of the various orders and the noise limit curve.

[0072] In some embodiments, Figure 6 As shown, the determination of the speed range without abnormal sound based on the order curves of each order and the noise limit curve includes:

[0073] S602: Selecting a target order curve having the highest degree of overlap with the noise limit curve from the order curves of each order;

[0074] S604: taking the overlapped interval between the target order curve and the noise limit curve as the speed interval where abnormal noise exists;

[0075] S606: Determine a speed range in which no abnormal sound exists based on the speed range in which the abnormal sound exists.

[0076] In an exemplary embodiment, take the case where the range hood has an abnormal sound when running at a high level as an example. Figure 7 As shown in the figure, the red curve is the second noise curve, and the black curve is the noise limit curve, which is obtained by shifting the second noise curve downward by 15dB. The Order 11, Order 23, and Order 24 curves are order curves of each order, and the horizontal axis represents the speed, and the vertical axis represents the noise.

[0077] As can be seen from the figure, the pink 24th-order noise curve has the highest overlap with the noise limit curve, and exceeds the noise limit curve in the speed range of 450-579rpm; 605-662rpm; 675-705rpm. Therefore, the speed range of 450-579rpm; 605-662rpm; 675-705rpm is the speed range where abnormal noise exists.

[0078] Assuming that the high-speed speed is set in the speed range of 650-750rpm, and the speed threshold is, for example, 800rpm, the speed of the range hood is controlled to accelerate uniformly from 0 to 800rpm, and the second noise data in the speed range of 0-800rpm is obtained. Assuming that due to the installation environment of the user's home and external resistance, the actual speed of the range hood stays at 700rpm, which is now within the above-mentioned speed range of 675-705rpm.

[0079] There are two speed ranges without abnormal sound closest to the actual speed of 700rpm, which are 662rpm~675rpm and 705rpm~800rpm. Among them, the actual speed of 700rpm is closer to the speed range of 705rpm~800rpm, so the control current is increased to keep the final speed of the range hood at 705rpm, thereby avoiding the abnormal sound when the range hood is running at a high speed.

[0080] If the range hood makes abnormal noise when it is running at a low gear, a middle gear or other gears, the same method as above is used to obtain the final speed, thereby avoiding the range hood making abnormal noise when it is running at other gears.

[0081] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above method embodiment are implemented.

[0082] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A range hood operation control method, characterized in that: The method comprises: Acquire first noise data of the range hood when it is running at each gear position, so as to determine whether there is abnormal sound when it is running at each gear position; If yes, for the gear position with abnormal sound, obtain second noise data of the range hood speed from startup to the speed threshold, and determine the speed interval without abnormal sound based on the second noise data; Based on the speed corresponding to the gear position with abnormal noise, the speed range closest to the speed without abnormal noise is determined, and the final speed closest to the speed is selected from the closest speed range, and the range hood is controlled to run at the final speed when running in this gear position.

2. The method according to claim 1, characterized in that The obtaining of the first noise data of the range hood when the range hood is operated at each gear position to determine whether there is abnormal sound when the range hood is operated at each gear position comprises: Based on the first noise data of the range hood when it is running at each gear, first noise curves are generated respectively; Based on the peak value of each of the first noise curves and the effective value corresponding to each of the first noise data, it is determined whether there is abnormal noise when each gear is running.

3. The method according to claim 2, characterized in that The determining whether there is abnormal sound when each gear is running based on the peak value of each first noise curve and the effective value corresponding to each first noise data includes: If the peak value of the first noise curve and the effective value corresponding to the first noise data are greater than or equal to the noise threshold, it is determined that there is no abnormal sound when the range hood is running at this gear; otherwise, it is determined that there is an abnormal sound when the range hood is running at this gear.

4. The method according to claim 1, characterized in that: The step of obtaining second noise data of the range hood during a period from when the range hood is started to when the range hood reaches a speed threshold, and determining a speed interval in which no abnormal sound exists based on the second noise data comprises: generating a second noise curve based on the second noise data; generating a noise limit curve based on the second noise curve; generating order curves of various orders based on the second noise data; Based on the order curves of each order and the noise limit curve, a speed range in which no abnormal sound exists is determined.

5. The method according to claim 4, characterized in that The determining of the speed range without abnormal sound based on the order curves of each order and the noise limit curve comprises: Selecting a target order curve having the highest degree of overlap with the noise limit curve from the order curves of each order; The overlapped interval between the target order curve and the noise limit curve is used as the speed interval where abnormal noise exists; Based on the rotation speed range in which the abnormal sound exists, a rotation speed range in which the abnormal sound does not exist is determined.

6. The method according to claim 1, characterized in that The rotation speed threshold is greater than the rotation speed of the range hood when it is running at the highest gear.

7. The method according to claim 3, characterized in that The noise threshold is 20Db.

8. A range hood, characterized in that: The method comprises a processor configured to execute the method according to any one of claims 1 to 7.

9. The range hood according to claim 8, characterized in that: The range hood further comprises a rotation speed sensor and a noise collection device connected to the processor, wherein the rotation speed sensor is used to collect the rotation speed of the range hood, and the noise collection device is used to obtain first noise data of the range hood when it is running in each gear and second noise data from startup to a rotation speed threshold.

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

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