Operation control method of range hood, range hood and computer readable storage medium

Abstract

The application relates to the field of household appliances, in particular to an operation control method of an extractor hood, the extractor hood and a computer readable storage medium. The method comprises the following steps: acquiring first noise data of the extractor hood when the extractor hood operates at each gear position, so as to determine whether there is abnormal sound when the extractor hood operates at each gear position; if there is, acquiring second noise data of the extractor hood during the period from startup to a speed threshold of the speed of the extractor hood for the gear position with abnormal sound, determining a speed interval without abnormal sound based on the second noise data; determining a speed interval without abnormal sound closest to the speed corresponding to the gear position with abnormal sound, selecting a final speed closest to the speed from the closest speed interval, and controlling the extractor hood to operate at the final speed when the extractor hood operates at the gear position, so that abnormal sound is avoided during the operation of the extractor hood.

Description

TECHNICAL FIELD

[0001] The present application 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. BACKGROUND

[0002] In the research and development stage of the range hood, the design rotating speed will avoid the abnormal sound interval with resonance. For example, if there is an abnormal sound at 600 rpm, the rotating speed will be set at 650 rpm-750 rpm to avoid the user from hearing obvious abnormal sound in use.

[0003] However, the environment in the user's home cannot be predicted. For example, the user's home is a public pipeline or a direct discharge, the user cooks during the peak or valley period of fire use, and the resistance outside the smoke pipe will change greatly. At this time, the actual rotating speed of the range hood may drop below 650 rpm, or even drop to around 600 rpm, thereby producing abnormal sound. SUMMARY

[0004] Therefore, it is necessary to provide an operation control method of a range hood, the range hood and a computer readable storage medium to solve the above technical problems.

[0005] In a first aspect, an operation control method of a range hood is provided, and the method comprises:

[0006] obtaining first noise data of the range hood when operating at each gear position to determine whether there is abnormal sound when operating at each gear position;

[0007] if there is, obtaining second noise data of the range hood during the period from starting to a rotating speed threshold for the gear position with abnormal sound, determining a rotating speed interval without abnormal sound based on the second noise data;

[0008] determining the rotating speed interval without abnormal sound closest to the rotating speed corresponding to the gear position with abnormal sound, selecting a final rotating speed closest to the rotating speed from the closest rotating speed interval, and controlling the range hood to operate at the final rotating speed when operating at the gear position.

[0009] In some embodiments, the first noise data of the range hood when operating at each gear position is obtained to determine whether there is abnormal sound when operating at each gear position, comprising:

[0010] generating a first noise curve based on the first noise data of the range hood when operating at each gear position;

[0011] determining whether there is abnormal sound when operating at each gear position based on the peak value of each first noise curve and the effective value corresponding to each first noise data.

[0012] In some embodiments, the determining whether there is an 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 comprises:

[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 a noise threshold value, it is determined that there is no abnormal sound when the range hood runs at the gear; otherwise, it is determined that there is an abnormal sound when the range hood runs at the gear.

[0014] In some embodiments, the obtaining second noise data of the range hood from start to a speed threshold value, and determining a speed interval without abnormal sound based on the second noise data comprises:

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

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

[0017] generating an order curve of each order based on the second noise data;

[0018] determining a speed interval without abnormal sound based on the order curve of each order and the noise limit value curve.

[0019] In some embodiments, the determining a speed interval without abnormal sound based on the order curve of each order and the noise limit value curve comprises:

[0020] selecting a target order curve with the highest degree of coincidence with the noise limit value curve from the order curve of each order;

[0021] regarding the overlapping interval of the target order curve and the noise limit value curve as a speed interval with abnormal sound;

[0022] determining a speed interval without abnormal sound based on the speed interval with abnormal sound.

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

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

[0025] In a second aspect, the embodiments of the present application provide a range hood, comprising a processor, wherein the processor is configured to execute the method of the first aspect.

[0026] In some embodiments, the range hood further comprises a rotation speed sensor and a noise collection device connected to the processor, 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 each gear is running and second noise data during a period from starting to a rotation speed threshold.

[0027] In a second aspect, the embodiments of the present application provide a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method in the first aspect.

[0028] The present application has the following effects: based on the rotation speed corresponding to the gear with abnormal sound, the rotation speed interval without abnormal sound closest to the rotation speed is determined, the final rotation speed closest to the rotation speed is selected from the closest rotation speed interval, and the range hood is controlled to run at the final rotation speed when the gear is running, so that the abnormal sound generated during the running of the range hood is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a module connection diagram of the range hood in an embodiment of the present application;

[0030] Figure 2 It is a flowchart of the running control method of the range hood in an embodiment of the present application;

[0031] Figure 3 It is a flowchart of the abnormal sound detection method in an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of the first noise curve in an example embodiment of the present application;

[0033] Figure 5 It is a flowchart of the method for determining the rotation speed interval without abnormal sound in an embodiment of the present application;

[0034] Figure 6 It is a specific flowchart of the method for determining the rotation speed interval without abnormal sound in an embodiment of the present application;

[0035] Figure 7 It is a schematic diagram of the second noise curve, the noise limit curve, and the order curve of each order in an example embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the technical solutions of the embodiments of the present application clearer, the drawings needed in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can be applied to other similar situations without creative effort based on these drawings. Unless the context clearly indicates otherwise or otherwise stated, the same reference numbers in the drawings represent the same structure or operation.

[0037] As shown in the present application and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but can also include a plurality. Generally, the terms "comprising" and "including" only indicate including the steps and elements clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0038] Although the present application makes various references to certain modules in the system according to the embodiments of the present application, however, any number of different modules can be used and run on the 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 "connected", "coupled" to other units, modules or blocks, it can mean directly connected or coupled to, or in communication with other units, modules or blocks, or there can be intermediate units, modules or blocks, unless the context clearly indicates otherwise. The term "and / or" used herein can include any and all combinations of one or more related listed items.

[0040] As shown in the present application and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but can also include a plurality. Generally, the terms "comprising" and "including" only indicate including the steps and elements clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements. Figure 1 As shown in the present application and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not mean to specify a single number, but can also include a plurality. Generally, the terms "comprising" and "including" only indicate including the steps and elements clearly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0041] Among them, the noise acquisition device is, for example, a microphone.

[0042] Among them, the speed sensor can be an acceleration sensor, etc., and the speed of the range hood can be calculated according to the collected data.

[0043] The processor is configured to acquire first noise data of the range hood when the range hood operates at each gear to determine whether there is abnormal noise when the range hood operates at each gear; if there is, acquire second noise data of the range hood from start to a speed threshold of the speed of the range hood, determine a speed interval without abnormal noise based on the second noise data; determine a speed interval without abnormal noise closest to the speed corresponding to the gear with abnormal noise, select a final speed closest to the speed from the closest speed interval, and control the range hood to operate at the final speed when the range hood operates at the gear.

[0044] The processor is further configured to generate a first noise curve based on the first noise data of the range hood when the range hood operates at each gear, and determine whether there is abnormal noise when the range hood operates at each gear based on a peak value of each first noise curve and an effective value corresponding to each first noise data.

[0045] The processor is further configured to determine that there is no abnormal noise when the range hood operates at the 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, and determine that there is abnormal noise when the range hood operates at the gear otherwise.

[0046] The processor is further configured to generate a second noise curve based on the second noise data, generate a noise limit value curve based on the second noise curve, generate an order curve of each order based on the second noise data, and determine a speed interval without abnormal noise based on the order curve of each order and the noise limit value curve.

[0047] The processor is further configured to select a target order curve with the highest coincidence degree with the noise limit value curve from the order curve of each order, take a coincidence interval of the target order curve and the noise limit value curve as a speed interval with abnormal noise, and determine a speed interval without abnormal noise based on the speed interval with abnormal noise.

[0048] Based on the above range hood, as shown in the figure, Figure 2 The embodiment of the present application further provides a range hood operation control method, which comprises the following steps:

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

[0050] The first noise data of the range hood when the range hood operates at each gear is acquired by a noise acquisition device.

[0051] The range hood comprises three gears, i.e., a low gear, a middle gear and a high gear.

[0052] S204: If exists, acquiring second noise data of the range hood from start to speed threshold value for the gear with abnormal sound, determining the speed interval without abnormal sound based on the second noise data.

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

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

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

[0056] In this embodiment, based on the speed corresponding to the gear with abnormal sound, determine the closest speed interval without abnormal sound to the speed, and select the final speed closest to the speed from the closest speed interval, and control the range hood to run at the final speed when running at the gear, so as to avoid abnormal sound during the operation of the range hood.

[0057] In some embodiments, as shown in Figure 3 The first noise data of the range hood running at each gear is acquired to determine whether there is abnormal sound when running at each gear.

[0058] S302: Based on the first noise data of the range hood running at each gear, a first noise curve is generated respectively;

[0059] S304: Based on the peak value of each first noise curve and the effective value corresponding to each first noise data, it is determined whether there is abnormal sound when running at each gear.

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

[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 value, it is determined that there is no abnormal sound when the range hood runs at the gear; otherwise, it is determined that there is abnormal sound when the range hood runs at the gear.

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

[0063] In an example embodiment, a first noise curve of the range hood when operating at a certain gear is shown in FIG. 1, where the horizontal axis represents frequency, ranging from 0 to 1000 Hz, and the vertical axis represents noise. Figure 4 As shown in FIG. 1, the 0-1000 RMS value is 51.15 Db. The user can set two modes, i.e., a silent mode and a standard mode. In the silent mode, a threshold of 20 Db is set, corresponding to the sweep curve of 31.15 Db in the horizontal axis. This standard can also identify slight abnormal noise. In the steady state, the sweep curve corresponding to 20 Db is narrower in the speed range without abnormal noise. In the standard mode, a threshold of 15 Db is set, corresponding to the sweep curve of 36.15 Db in the horizontal axis. This standard will pass some slight abnormal noise. Since the user is in the kitchen, it is not likely to capture some slight abnormal noise. Therefore, the standard mode is more suitable for some users who are not too demanding. In the steady state, the sweep curve corresponding to 15 Db is wider in the speed range without abnormal noise.

[0064] As shown in FIG. 1, the 0-1000 RMS value is 51.15 Db. The user can set two modes, i.e., a silent mode and a standard mode. In the silent mode, a threshold of 20 Db is set, corresponding to the sweep curve of 31.15 Db in the horizontal axis. This standard can also identify slight abnormal noise. In the steady state, the sweep curve corresponding to 20 Db is narrower in the speed range without abnormal noise. In the standard mode, a threshold of 15 Db is set, corresponding to the sweep curve of 36.15 Db in the horizontal axis. This standard will pass some slight abnormal noise. Since the user is in the kitchen, it is not likely to capture some slight abnormal noise. Therefore, the standard mode is more suitable for some users who are not too demanding. In the steady state, the sweep curve corresponding to 15 Db is wider in the speed range without abnormal noise. Figure 4

[0065] As shown in FIG. 1, the 0-1000 RMS value is 51.15 Db. The user can set two modes, i.e., a silent mode and a standard mode. In the silent mode, a threshold of 20 Db is set, corresponding to the sweep curve of 31.15 Db in the horizontal axis. This standard can also identify slight abnormal noise. In the steady state, the sweep curve corresponding to 20 Db is narrower in the speed range without abnormal noise. In the standard mode, a threshold of 15 Db is set, corresponding to the sweep curve of 36.15 Db in the horizontal axis. This standard will pass some slight abnormal noise. Since the user is in the kitchen, it is not likely to capture some slight abnormal noise. Therefore, the standard mode is more suitable for some users who are not too demanding. In the steady state, the sweep curve corresponding to 15 Db is wider in the speed range without abnormal noise. Figure 4 As shown in FIG. 1, the 0-1000 RMS value is 51.15 Db. The user can set two modes, i.e., a silent mode and a standard mode. In the silent mode, a threshold of 20 Db is set, corresponding to the sweep curve of 31.15 Db in the horizontal axis. This standard can also identify slight abnormal noise. In the steady state, the sweep curve corresponding to 20 Db is narrower in the speed range without abnormal noise. In the standard mode, a threshold of 15 Db is set, corresponding to the sweep curve of 36.15 Db in the horizontal axis. This standard will pass some slight abnormal noise. Since the user is in the kitchen, it is not likely to capture some slight abnormal noise. Therefore, the standard mode is more suitable for some users who are not too demanding. In the steady state, the sweep curve corresponding to 15 Db is wider in the speed range without abnormal noise.

[0066] Figure 5 In some embodiments, as shown in FIG. 2, the method of obtaining the second noise data of the range hood from the start to the speed threshold, and determining the speed range without abnormal noise 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 offset by 15 Db to obtain the noise limit curve.

[0070] S506: generating an order curve of each order based on the second noise data;

[0071] S508: determining the speed range without abnormal noise based on the order curve of each order and the noise limit curve.

[0072] In some embodiments, as shown in FIG. 3, the method of determining the speed range without abnormal noise based on the order curve of each order and the noise limit curve includes: Figure 6 ​​​

[0073] S602: Select the target order curve that has the highest overlap with the noise limit curve from the order curves of each order;

[0074] S604: The overlap range between the target order curve and the noise limit curve shall be taken as the speed range in which abnormal noise exists;

[0075] S606: Based on the speed range where abnormal noise exists, determine the speed range where abnormal noise does not exist.

[0076] In one example embodiment, taking the abnormal noise of a range hood when running at high speed as an example, such as... Figure 7 As shown in the figure, the red curve is the second noise curve, 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 the order curves of each order, with the horizontal axis representing the rotational speed and the vertical axis representing the noise.

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

[0078] Assuming the high-speed setting is within the range of 650-750 rpm, and the speed threshold is, for example, 800 rpm, the range hood's speed is controlled to accelerate uniformly from 0 to 800 rpm, and the second noise data within the 0-800 rpm speed range is obtained. If, due to the user's installation environment and external resistance, the actual speed of the range hood remains at 700 rpm, then it falls within the aforementioned speed range of 675-705 rpm.

[0079] There are two noise-free speed ranges closest to the actual speed of 700 rpm: 662 rpm to 675 rpm and 705 rpm to 800 rpm. The actual speed of 700 rpm is closer to the 705 rpm to 800 rpm range, so the control current is increased to maintain the range hood's final speed at 705 rpm, thus avoiding noise when the range hood is running at a high speed.

[0080] If a range hood makes abnormal noise when running at low, medium, or other speeds, use the same method as described above to obtain the final speed, thereby avoiding abnormal noise when the range hood is running at other speeds.

[0081] In an embodiment, a computer readable storage medium is provided, having stored thereon a computer program, which, when executed by a processor, implements the steps of the above method embodiments.

[0082] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned embodiments. Any reference to memory, storage, database or other medium used in the embodiments provided in the present 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. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0083] Each of the technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of each technical feature in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0084] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be noted that for a person of ordinary skill in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method for controlling the operation of a range hood, characterized in that, The method includes: The first noise data of the range hood at each speed setting is obtained to determine whether there is any abnormal noise at each speed setting. If present, for the setting where abnormal noise occurs, the second noise data of the range hood's speed from start-up to the speed threshold is obtained, and the speed range where no abnormal noise occurs is determined based on the second noise data; Based on the speed at which abnormal noise occurs, determine the speed range that is closest to the speed at which no abnormal noise occurs, 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 it is in that setting. The step of obtaining the first noise data of the range hood at each operating speed to determine whether there is abnormal noise at each operating speed includes: Based on the first noise data of the range hood at each speed setting, a first noise curve is 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 any abnormal noise during operation at each gear. The step of determining whether there is abnormal noise during operation at each gear position based on the peak value of each of the first noise curves and the effective value corresponding to each of the first noise data includes: If the difference between the effective value corresponding to the first noise data and the peak value of the first noise curve is greater than or equal to the noise threshold, it is determined that the range hood does not produce any abnormal noise when operating at that setting; otherwise, it is determined that the range hood produces abnormal noise when operating at that setting.

2. The method according to claim 1, characterized in that, The step of acquiring second noise data of the range hood from startup to a speed threshold, and determining the speed range where no abnormal noise occurs based on the second noise data, includes: Based on the second noise data, a second noise curve is generated; Based on the second noise curve, a noise limit curve is generated; Based on the second noise data, order curves of each order are generated; Based on the order curves of each order and the noise limit curve, the speed range in which no abnormal noise occurs is determined.

3. The method according to claim 2, characterized in that, The determination of the speed range where no abnormal noise occurs based on the order curves of each order and the noise limit curve includes: Select the target order curve that has the highest degree of overlap with the noise limit curve from the order curves of each order; The overlap range between the target order curve and the noise limit curve is taken as the speed range where abnormal noise exists. Based on the speed range where abnormal noise exists, the speed range where abnormal noise does not exist is determined.

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

5. The method according to claim 1, characterized in that, The noise threshold is 20 dB.

6. A range hood, characterized in that, Includes a processor for performing the method as described in any one of claims 1-5.

7. The range hood according to claim 6, characterized in that, The range hood also includes a speed sensor and a noise acquisition device connected to the processor. The speed sensor is used to acquire the speed of the range hood, and the noise acquisition device is used to acquire first noise data of the range hood when it is running at each speed setting and second noise data from start-up to the speed threshold.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-5.

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