Oil fume detection method, device and electronic equipment of range hood

Abstract

The application provides a method and device for detecting oil fume of a range hood and an electronic device. The method comprises determining the amount of smoke entering the range hood and the influence coefficient of the range hood, wherein the influence coefficient comprises at least one of the following: dust influence coefficient, fiber influence coefficient and oil product influence coefficient; determining the corrected amount of smoke entering the range hood based on the amount of smoke entering the range hood and the influence coefficient of the range hood; and controlling the range hood to a cleaning state if the sum of the corrected amount of smoke entering the range hood determined each time is greater than a preset threshold. In this way, the influence of factors such as dust, fiber and oil product type on the amount of smoke entering the range hood is considered in the process of determining the amount of smoke entering the range hood, so that whether the oil fume of the range hood exceeds the standard can be determined, and the accuracy of oil fume detection can be improved.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a method, apparatus, and electronic device for detecting oil fumes from a range hood. Background Technology

[0002] Most existing range hoods detect cooking fumes using direct sensor detection. This means the sensors directly collect the fumes from the range hood. However, because sensors typically only detect fumes at a single point on the grease filter, and the grease filter area of ​​a range hood is relatively large, this method of sensor-based fume collection is prone to significant errors, resulting in inaccurate fume detection. Furthermore, this sensor-based fume collection method does not consider the influence of external factors on the amount of fume entering the range hood, further reducing the accuracy of fume detection. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a method, device and electronic device for detecting oil fumes in a range hood, so as to improve the accuracy of oil fume detection.

[0004] In a first aspect, embodiments of the present invention provide a method for detecting oil fumes from a range hood. The method includes: determining the smoke intake volume of the range hood and the influence coefficient of the range hood; wherein the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient, and oil influence coefficient; determining a corrected smoke intake volume of the range hood based on the smoke intake volume and the influence coefficient of the range hood; accumulating the corrected smoke intake volume of the range hood determined each time to obtain a cumulative corrected smoke intake volume; if the cumulative corrected smoke intake volume is greater than a preset threshold, controlling the range hood to a cleaning state and resetting the cumulative corrected smoke intake volume to zero.

[0005] In an optional embodiment of this application, the steps of determining the smoke intake volume and influence coefficient of the range hood include: obtaining parameters of the range hood; wherein the parameters of the range hood include: air inlet area, air inlet velocity, smoke concentration, and usage time; the parameters of the range hood also include at least one of the following: dust concentration, fiber density, and oil type; determining the smoke intake volume of the range hood based on the parameters of the range hood; and determining the influence coefficient of the range hood based on the parameters of the range hood.

[0006] In an optional embodiment of this application, the wind speed at the air inlet of the range hood is collected by a wind speed sensor installed at the air inlet of the range hood; the oil fume concentration of the range hood is collected by an oil fume concentration sensor; the operating level of the range hood is determined; the air inlet area of ​​the range hood is determined based on the operating level; and the usage time of the range hood is determined based on the current time and the start time of the range hood.

[0007] In optional embodiments of this application, the steps of obtaining the parameters of the range hood described above may further include at least one of the following: collecting the dust concentration in the air through a dust concentration sensor; detecting the fiber density through a fiber detection structure; determining the oil type based on the food image of the stove; or obtaining the oil type of the range hood input by the user.

[0008] In an optional embodiment of this application, the step of detecting fiber density by means of the fiber detection structure includes: acquiring a first wind speed in a fiber-free environment and a second wind speed in a fiber-containing environment by means of a wind speed sensor disposed after the fiber detection structure; and determining the fiber density based on the first wind speed and the second wind speed.

[0009] In an optional embodiment of this application, the steps of collecting the first wind speed in a fiber-free environment and the second wind speed in a fiber-containing environment by means of a wind speed sensor disposed after the fiber detection structure include: intercepting the fibers of the range hood by rotating the fiber detection structure; collecting the first wind speed of the range hood by means of a wind speed sensor in a fiber-free environment; and rotating the fiber detection structure in a fiber-containing environment to collect the second wind speed of the range hood by means of a wind speed sensor.

[0010] In an optional embodiment of this application, the step of determining fiber density based on the first wind speed and the second wind speed includes: calculating the wind speed difference between the first wind speed and the second wind speed; and determining the fiber density based on the wind speed difference and a pre-set correspondence between the wind speed difference and fiber density.

[0011] In an optional embodiment of this application, the step of determining the smoke intake of the range hood based on its parameters includes: calculating the smoke intake of the range hood using the following formula: Y = S × r × t × c; where Y is the smoke intake of the range hood, S is the area of ​​the air inlet, r is the air velocity at the air inlet of the range hood, t is the smoke concentration of the range hood, and c is the usage time of the range hood.

[0012] In optional embodiments of this application, the step of determining the influence coefficient of the range hood based on its parameters includes at least one of the following: determining the dust influence coefficient of the range hood based on dust concentration; determining the fiber influence coefficient of the range hood based on fiber density; and determining the oil influence coefficient of the range hood based on oil type.

[0013] In an optional embodiment of this application, the step of determining the corrected smoke intake of the range hood based on the smoke intake volume and the influence coefficient of the range hood includes: determining the corrected smoke intake volume of the range hood using the following formula: P = Y / (Z1 × Z2 × Z3); where P is the corrected smoke intake volume, Z1 is the dust influence coefficient, Z2 is the fiber influence coefficient, and Z3 is the oil influence coefficient; where, if the parameter corresponding to the influence coefficient is not obtained, the influence coefficient is set to 1.

[0014] In an optional embodiment of this application, the range hood includes a cleaning state, a working state, and a closed state; the step of controlling the range hood to the cleaning state includes: controlling the range hood from the closed state to the working state by opening the baffle of the range hood to the corresponding working state range; controlling the range hood from the working state to the cleaning state by opening the baffle of the range hood to the corresponding cleaning state range.

[0015] In an optional embodiment of this application, if the sum of the corrected smoke intake of the range hood determined each time is greater than a preset threshold, the method further includes: controlling the alarm module of the range hood to perform an alarm operation to prompt the user to clean the range hood.

[0016] Secondly, embodiments of the present invention also provide an oil fume detection device for a range hood, the device comprising: an intake smoke volume and influence coefficient determination module, used to determine the intake smoke volume and influence coefficient of the range hood; wherein the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient, and oil influence coefficient; a corrected intake smoke volume determination module, used to determine the corrected intake smoke volume of the range hood based on the intake smoke volume and influence coefficient of the range hood; a corrected intake smoke volume accumulation module, used to accumulate the determined corrected intake smoke volume of the range hood each time to obtain the cumulative corrected intake smoke volume; and a range hood control module, used to control the range hood to a cleaning state and reset the cumulative corrected intake smoke volume to zero if the cumulative corrected intake smoke volume is greater than a preset threshold.

[0017] Thirdly, embodiments of the present invention also provide an electronic device, including a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the above-described method for detecting oil fumes in a range hood.

[0018] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are invoked and executed by a processor, they cause the processor to implement the aforementioned method for detecting oil fumes in a range hood.

[0019] The embodiments of the present invention bring the following beneficial effects:

[0020] This invention provides a method, apparatus, and electronic device for detecting oil fumes from a range hood. After determining the range hood's smoke intake volume and its influence coefficient, a corrected smoke intake volume is determined. The cumulative corrected smoke intake volume is obtained by accumulating each determined corrected smoke intake volume. If the cumulative corrected smoke intake volume exceeds a preset threshold, the range hood is controlled to a cleaning state. This method comprehensively considers the influence of factors such as dust, fibers, and oil type on the range hood's smoke intake volume during the determination process, thereby judging whether the oil fumes exceed the standard and improving the accuracy of oil fume detection.

[0021] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0022] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 A flowchart of a method for detecting oil fumes from a range hood, provided as an embodiment of the present invention;

[0025] Figure 2 A flowchart illustrating another method for detecting oil fumes from a range hood, provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a range hood cleaning method provided in an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram illustrating fiber detection in a range hood according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of an oil fume detection device for a range hood provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0030] Icons: 1-Range hood; 2-Fiber sensor; 21-Shaft; 22-Wind speed sensor; 23-Fiber interception net; 24-Rock arm; 51-Smoke intake volume and influence coefficient determination module; 52-Corrected smoke intake volume determination module; 53-Corrected smoke intake volume accumulation module; 54-Range hood control module; 100-Memory; 101-Processor; 102-Bus; 103-Communication interface. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Currently, most existing range hoods detect cooking fumes using direct sensor detection. This means the sensors directly collect the cooking fumes from the range hood. However, because sensors typically only detect fumes at a single point on the grease filter, and the grease filter area of ​​a range hood is relatively large, this sensor-based method is prone to significant errors, resulting in inaccurate fume detection. Furthermore, this sensor-based method does not consider the influence of external factors on the amount of smoke entering the range hood, further reducing the accuracy of fume detection.

[0033] Therefore, embodiments of the present invention provide a method, device, and electronic device for detecting oil fumes in a range hood. These methods comprehensively consider the influence of dust, fibers, and oil type on the amount of oil entering the range hood during the process of determining the amount of oil fumes entering the range hood, thereby improving the accuracy of oil fume detection.

[0034] To facilitate understanding of this embodiment, a method for detecting oil fumes in a range hood, as disclosed in this embodiment of the invention, will be described in detail first.

[0035] Example 1:

[0036] This invention provides a method for detecting oil fumes from a range hood. (See attached image.) Figure 1 The flowchart shown illustrates a method for detecting oil fumes from a range hood. This method includes the following steps:

[0037] Step S102: Determine the smoke intake volume and influence coefficient of the range hood; wherein the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient, and oil influence coefficient.

[0038] In this embodiment, the smoke intake of the range hood can be determined first. The smoke intake of the range hood can be directly detected by a sensor; alternatively, the inlet area, inlet wind speed, smoke concentration, and usage time can be obtained as parameters of the range hood, and then the smoke intake of the range hood can be calculated based on the parameters of the range hood.

[0039] This embodiment can set different influence coefficients for different situations. For example, only the dust influence coefficient can be set as the influence coefficient, or the fiber influence coefficient and the oil influence coefficient can be set as the influence coefficient, or the dust influence coefficient, fiber influence coefficient and oil influence coefficient can be set as the influence coefficient.

[0040] Step S104: Determine the corrected smoke intake of the range hood based on the smoke intake volume and the influence coefficient of the range hood.

[0041] In this embodiment, the smoke intake of the range hood determined in the aforementioned steps can be corrected using the range hood's influence coefficient to obtain the corrected smoke intake. Specifically, the smoke intake of the range hood can be divided by the range hood's influence coefficient to obtain the corrected smoke intake.

[0042] Step S106: Accumulate the corrected smoke intake of the range hood each time to obtain the cumulative corrected smoke intake.

[0043] The smoke intake of a range hood can be understood as the amount of cooking fumes entering the range hood during the current usage time. Therefore, the smoke intake calculated after each use of the range hood, after being corrected to obtain the corrected smoke intake, can be accumulated. For example: the smoke intake of the range hood for the first use is Y1, and the corrected smoke intake is P1; the smoke intake of the range hood for the second use is Y2, and the corrected smoke intake is P2; then the total amount of cooking fumes entering the range hood at this time is P1 + P2, and so on.

[0044] Step S108: If the cumulative corrected smoke intake is greater than the preset threshold, control the range hood to the cleaning state and reset the cumulative corrected smoke intake to zero.

[0045] The cumulative corrected smoke intake is the total amount of oil fumes P entering the range hood mentioned above. In this embodiment, a threshold X is preset. When the total amount of oil fumes P entering the range hood is greater than the threshold X, it can be considered that the oil fumes accumulated in the range hood have exceeded the standard and the range hood needs to be cleaned. The range hood can be controlled to the cleaning state and the cumulative corrected smoke intake can be reset to zero.

[0046] This invention provides a method for detecting oil fume from a range hood. After determining the range hood's smoke intake volume and its influence coefficient, a corrected smoke intake volume is determined. The cumulative corrected smoke intake volume is obtained by accumulating these corrected intake volumes. If the cumulative corrected smoke intake volume exceeds a preset threshold, the range hood is switched to a cleaning state. This method comprehensively considers the influence of factors such as dust, fibers, and oil type on the smoke intake volume during the determination process, thereby improving the accuracy of oil fume detection and determining whether the smoke exceeds the standard.

[0047] Example 2:

[0048] This embodiment provides another method for detecting oil fumes from a range hood. This method is implemented based on the above embodiment. See [link to relevant documentation]. Figure 2 The flowchart shown represents another method for detecting oil fumes from a range hood. This method includes the following steps:

[0049] Step S202: Obtain the parameters of the range hood; determine the smoke intake of the range hood based on the parameters of the range hood; determine the influence coefficient of the range hood based on the parameters of the range hood.

[0050] The parameters of a range hood include: air inlet area, air inlet velocity, oil fume concentration, and usage time; the parameters of a range hood also include at least one of the following: dust concentration, fiber density, and oil type.

[0051] Parameters of a range hood, such as inlet area, inlet wind speed, fume concentration, and usage time, can be used to determine the amount of smoke intake. Specifically, in this embodiment, the inlet wind speed of the range hood can be collected by a wind speed sensor installed at the inlet; the fume concentration of the range hood can be collected by a fume concentration sensor; the operating level of the range hood can be determined, and the inlet area can be determined based on the operating level; the usage time of the range hood can be determined based on the current time and the start time of the range hood. In this embodiment, one or more fume concentration sensors and wind speed sensors are installed at the inlet of the range hood to collect fume concentration and wind speed data from multiple single points. The average value is taken as the fume concentration and wind speed data of the range hood, allowing for real-time monitoring of fume concentration and wind speed.

[0052] After a user selects the operating level of the range hood, the opening range of the baffle is determined based on that level. Therefore, there is a correspondence between the air inlet area of ​​the range hood and the operating level. This correspondence can be obtained in advance, and the air inlet area of ​​the range hood corresponding to the operating level can be determined based on this correspondence. For example, if the current time is T1 and the start time of the range hood is T2, then the usage time T of the range hood can be determined as the start time T2 - the current time T1.

[0053] Specifically, the smoke intake of a range hood can be calculated using the following formula: Y = S × r × t × c; where Y is the smoke intake of the range hood, S is the area of ​​the air inlet, r is the air velocity at the air inlet of the range hood, t is the smoke concentration of the range hood, and c is the usage time of the range hood.

[0054] For example: air intake area S = 0.2m 2 Wind speed r = 2 m / s; Fume concentration t = 0.050 g / m³ 3 If time c = 1 second, then the smoke intake Y1 = S × r × t × c = 0.2 m³ 2 ×2m / s×0.050g / m 3 ×1 second = 0.02g. If the threshold X = 2000g and the amount of smoke entering each time is the same, then it will take 2000 / 0.02≈100000 seconds for the range hood's smoke to exceed the standard.

[0055] Parameters of the range hood, such as dust concentration, first wind speed in a fiber-free environment, second wind speed in a fiber-containing environment, and oil type, can be used to determine the influence coefficient of the range hood. Specifically, this embodiment can at least collect the dust concentration in the air using a dust concentration sensor; detect the fiber density using a fiber detection structure; determine the oil type based on the food image on the stove; or obtain the oil type of the range hood input by the user.

[0056] This embodiment does not necessarily require all parameters of the range hood; that is, only some parameters such as dust concentration, fiber density, and oil type need to be obtained. In other words, this embodiment can consider the range hood's smoke intake from all or part of the aspects of dust, fiber, and oil.

[0057] When calculating the influence coefficients, this embodiment can determine the dust influence coefficient of the range hood based on dust concentration; determine the fiber influence coefficient of the range hood based on fiber density; and determine the oil influence coefficient of the range hood based on oil type.

[0058] (1) Dust and fumes can be further divided into oil fume particles produced by grease at high temperatures (with a size of about 0.01um-0.3um) and dust particles in the air (with a size of about 1um-75um). Especially for users living by the roadside, the dust from passing vehicles is very high, which will cause more serious pollution to the oil filter and other components, and the service time will be shorter.

[0059] Therefore, dust concentration sensors can be installed at non-oil fume-affected areas of the range hood, such as the left and right sides or top of the range hood, to detect the dust concentration in the air. A model of the degree of dust concentration's impact on component contamination can then be established, yielding the corresponding dust influence coefficient Z1. Z1 is greater than 0 and less than or equal to 1; the higher the dust concentration, the smaller the corresponding dust influence coefficient.

[0060] (2) For fibers, the oil fume can be further subdivided into: in addition to oil fume particles and dust particles, there are also fine fiber particles, mainly from clothes and other items that fall into the air and are scattered. Because the fibers are long and thin, they can enter the oil filter or dirty surface to play a connecting and reinforcing role, making it easier to clog the mesh of the oil filter, and the oil on the dirty surface is also more sticky, and the cleaning alarm time will be shortened.

[0061] Specifically, in this embodiment, a wind speed sensor located after the fiber detection structure can be used to collect the first wind speed in the fiber-free environment and the second wind speed in the fiber-containing environment; the fiber density can be determined based on the first and second wind speeds.

[0062] Currently, there is no method for detecting the density of fiber particles; therefore, please refer to [the relevant documentation / reference]. Figure 4 The diagram illustrates a fiber detection mechanism for a range hood. A fiber sensor 2 is installed at a non-inlet location of the range hood 1, such as the top or sides. Its structure mainly consists of a rotating shaft 21 connected to a motor. One end of a rocker arm 24 is fixed to the rotating shaft, and the other end is circular. A fiber interception mesh 23 is installed within the circle as a fiber detection structure. The fiber interception mesh can pass through dust particles but can intercept fine, long fiber particles. A wind speed sensor 22 is installed behind the interception mesh. The wind speed sensor 22 needs to be positioned as follows: Figure 4 On one side, the rotating shaft rotates clockwise; the fiber mesh filters the air first, and then the wind speed is measured; if the rotating shaft rotates counterclockwise, the wind speed sensor needs to be set on the other side.

[0063] Specifically, in this embodiment, the fiber detection structure can be rotated to intercept the fibers of the range hood; in a fiber-free environment, the first wind speed of the range hood can be collected by a wind speed sensor; in a fiber-containing environment, the fiber detection structure can be rotated to collect the second wind speed of the range hood by a wind speed sensor.

[0064] The fiber-free environment can be a laboratory environment where no fibers are present in the air, while the fiber environment can be a normal home environment where fibers are present in the air. After setting up the range hood in the aforementioned laboratory environment, a first wind speed of the range hood can be collected using a wind speed sensor; after setting up the range hood in the aforementioned home environment, a second wind speed of the range hood can be collected using a wind speed sensor.

[0065] The rotating shaft 21 can rotate at a constant speed. In a fiber-free environment, the first wind speed value H is the calibration value. When the fiber interception net is working in normal air, it will continuously intercept fine fibers, which will block the fiber interception net and affect the value of the subsequent wind speed sensor. After a certain period of time, the actual wind speed value measured by the wind speed sensor is the second wind speed value I. The main unit will calculate the difference J between the first and second wind speeds, J = HI.

[0066] This embodiment can also calculate the wind speed difference between the first and second wind speeds; based on the wind speed difference and the pre-set correspondence between the wind speed difference and fiber density, the fiber density is determined. The resulting difference model is converted into a fiber influence coefficient Z2, where Z2 is greater than 0 and less than or equal to 1; the larger J is, the smaller the Z2 value. The threshold X can be measured in a fiber-free environment, and the fiber influence coefficient Z2 is 1 when J is 0.

[0067] (3) There are many types of oils used in daily life, mainly divided into two categories: animal oils and vegetable oils. Each type of oil has a different smoke point, produces a different amount of smoke, and has different degrees of adhesion to parts. Here, we mainly classify them according to the amount of smoke produced and their adhesion ability, including: lard, soybean oil, peanut oil, sunflower seed oil, olive oil, rapeseed oil, blended oil, etc. The threshold X of each type of oil was obtained through experiments.

[0068] In actual cooking, you might use blended oil one day and lard the next. This requires the range hood to be able to identify the type of oil. There are two main solutions: First, utilize the distinct colors of each oil by installing a camera on the range hood above the stove to capture images. The range hood then processes and analyzes these images, comparing them to a database to determine the oil type. Second, provide an entry point for the user's preferred oil type on the control interface. Both methods can identify the type of oil used in cooking, and then determine the oil's influence coefficient Z3, where Z3 is greater than 0 and less than or equal to 1.

[0069] Step S204: Determine the corrected smoke intake of the range hood based on the smoke intake volume and the influence coefficient of the range hood.

[0070] Specifically, the corrected smoke intake of the range hood can be determined by the following formula: P = Y / (Z1 × Z2 × Z3); where P is the corrected smoke intake, and Y is the smoke intake of the range hood calculated in the aforementioned steps. Z1 is the dust influence coefficient, Z2 is the fiber influence coefficient, and Z3 is the oil influence coefficient; the dust influence coefficient is determined based on the dust concentration, the fiber influence coefficient is determined based on the difference between the first and second wind speeds, and the oil influence coefficient is determined based on the oil type; if the parameter corresponding to the influence coefficient is not obtained, the influence coefficient is set to 1.

[0071] It should be noted that the default value of Z1, Z2, and Z3 is 1. If the range hood parameters do not include the parameters needed to calculate Z1, Z2, and Z3, then Z1, Z2, and Z3 will be calculated directly according to the default value of 1.

[0072] The following examples will illustrate this:

[0073] 1. The parameters of the range hood do not include the first wind speed, the second wind speed, and the dust concentration, therefore Z2 = Z1 = 1. The air intake area S = 0.2m².2 Wind speed r = 2 m / s; Fume concentration t = 0.010 g / m³ 3 Threshold X = 3000g; Oil influence coefficient Z3 = 0.4; Time c = 2 seconds. The corrected smoke intake volume of the range hood can be determined by calculation: P1 = (S × r × t × c) / Z3 = (0.2m³ / s). 2 ×2m / s×0.010g / m 3 (×2 seconds) / 0.4 = 0.02g.

[0074] Assuming that the three variables of wind speed, oil fume concentration and dust influence coefficient are fixed, the total time of oil fume exceeding the standard = X / Y1 = 3000g / 0.02g ≈ 150000 (seconds).

[0075] 2. The parameters of the range hood do not include the first and second wind speeds, therefore Z2 = 1. The air intake area S = 0.05m². 2 Wind speed r = 6 m / s; Fume concentration t = 0.020 g / m³ 3 Threshold X = 1000g; Dust influence coefficient Z1 = 0.8, Oil influence coefficient Z3 = 0.5; Time c = 3 seconds. The corrected smoke intake volume of the range hood can be determined by calculation: P1 = (S × r × t × c) / (Z1 × Z2) = (0.05m³ / s). 2 ×6m / s×0.020g / m 3 (×3 seconds) / (0.8×0.5)=0.045g.

[0076] Assuming that the four variables—wind speed, oil fume concentration, dust influence coefficient, and fiber influence coefficient—are fixed, the total time for oil fume exceeding the standard is X / P = 1000g / 0.045g ≈ 168889 (seconds).

[0077] 3. The parameters of the range hood do not include dust concentration, first fan speed, and second fan speed, therefore Z1 = Z2 = 1. Air intake area S = 0.2m² 2 Wind speed r = 1 m / s; Fume concentration t = 0.040 g / m³ 3 Threshold X = 3000g; Oil quality influence coefficient of lard Z3 = 0.4; Oil quality influence coefficient of blended oil Z3 = 0.8; Time c = 2000 seconds. The corrected smoke intake of the range hood when using lard can be calculated as P1 = (S × r × t × c) / Z = (0.2m³ / s). 2 ×1m / s×0.040g / m 3 (×2000 seconds) / 0.4=40g; When using blended oil, the corrected smoke intake of the range hood is P2=(S×r×t×c) / Z=(0.2m 2 ×1m / s×0.040g / m 3 (×2000 seconds) / 0.8 = 20g.

[0078] In summary, this embodiment comprehensively considers dust, fibers, and oil to further improve the accuracy of fume detection. Specifically, this embodiment studies the effect of dust on oil-stained components and establishes a dust influence coefficient, making the fume cleaning forecast more realistic and accurate.

[0079] This embodiment cleverly uses a rotating net to collect fine fibers and then tests the wind speed changes to convert them into a fiber influence coefficient. At the same time, it cleverly uses a reversal method to remove the previously measured dirt and retest the next set of data, making the range hood cleaning forecast more realistic and accurate.

[0080] This embodiment quantifies the amount of oil fume produced by various oil products through research and measurement. By calibrating one oil product as a benchmark, the amounts of other oil products can be quantified, making the range hood cleaning forecast more realistic and accurate.

[0081] Step S206: Accumulate the corrected smoke intake of the range hood each time to obtain the cumulative corrected smoke intake.

[0082] In this embodiment, the corrected smoke intake volume P1...PN of the range hood can be recorded each time, and the corrected smoke intake volume P = P1 + P2 +...PN can be accumulated each time. When P is greater than the threshold X, it can be considered that the range hood needs to be cleaned, and at this time the range hood can be controlled to the cleaning state.

[0083] Step S208: If the cumulative corrected smoke intake is greater than the preset threshold, control the range hood to the cleaning state and reset the cumulative corrected smoke intake to zero.

[0084] Specifically, the range hood can include a cleaning state, a working state, and a closed state. In this embodiment, the range hood in the closed state can be switched to the working state, and the smoke baffle of the range hood can be opened to the corresponding working state range; the range hood in the working state can be switched to the cleaning state, and the smoke baffle of the range hood can be opened to the corresponding cleaning state range.

[0085] The push-rod motor can be activated to the cleaning state, thereby controlling the range hood's baffle to open to the corresponding extent for cleaning, allowing the user to perform the cleaning operation. After processing, it resets to await the next cycle. (See also...) Figure 3 The diagram shown illustrates a method for cleaning a range hood.

[0086] Furthermore, in this embodiment, an alarm can also be triggered when the amount of cooking fumes exceeds the standard. For example, if the sum of the corrected smoke intake of the range hood is greater than a preset threshold after each step, the alarm module of the range hood is controlled to perform an alarm operation to prompt the user to clean the range hood.

[0087] Alarm actions can include: displaying a prompt on the range hood's display panel, such as playing an animation or text; sounding the range hood's buzzer to provide an audible alert; or sending the alarm information to the user's terminal device, such as an application on the user's mobile phone, computer, or tablet.

[0088] Example 3:

[0089] Corresponding to the above method embodiments, this invention provides an oil fume detection device for range hoods, see [link / reference]. Figure 5 The diagram shows a structural schematic of an oil fume detection device for a range hood. The oil fume detection device includes:

[0090] The smoke intake volume and influence coefficient determination module 51 is used to determine the smoke intake volume and influence coefficient of the range hood; wherein, the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient and oil influence coefficient;

[0091] The corrected smoke intake volume determination module 52 is used to determine the corrected smoke intake volume of the range hood based on the smoke intake volume of the range hood and the influence coefficient of the range hood.

[0092] The corrected smoke intake volume accumulation module 53 is used to accumulate the corrected smoke intake volume of the range hood each time to obtain the cumulative corrected smoke intake volume;

[0093] The range hood control module 54 is used to control the range hood to a cleaning state if the sum of the corrected smoke intake of the range hood determined each time is greater than a preset threshold.

[0094] This invention provides a range hood fume detection device. After determining the range hood's fume intake and its influence coefficient, a corrected fume intake is determined. The cumulative corrected fume intake is obtained by accumulating each determined corrected fume intake. If the cumulative corrected fume intake exceeds a preset threshold, the range hood is controlled to a cleaning state. This method comprehensively considers the influence of factors such as dust, fibers, and oil type on the range hood's fume intake during the determination process, thereby judging whether the fume levels exceed standards and improving the accuracy of fume detection.

[0095] The aforementioned smoke intake and influence coefficient determination module is used to obtain the parameters of the range hood; wherein, the parameters of the range hood include: air inlet area, air inlet velocity, oil fume concentration, and usage time; the parameters of the range hood also include at least one of the following: dust concentration, fiber density, and oil type; the smoke intake of the range hood is determined based on the parameters of the range hood; the influence coefficient of the range hood is determined based on the parameters of the range hood.

[0096] The aforementioned smoke intake and influence coefficient determination module is used for at least one of the following: collecting the air intake wind speed of the range hood through a wind speed sensor installed at the air intake of the range hood; collecting the oil fume concentration of the range hood through an oil fume concentration sensor; determining the working level of the range hood and determining the air intake area of ​​the range hood based on the working level; and determining the usage time of the range hood based on the current time and the start time of the range hood.

[0097] The aforementioned smoke intake and influence coefficient determination module is used for at least one of the following: collecting dust concentration in the air through a dust concentration sensor; detecting fiber density through a fiber detection structure; determining the type of oil based on the food image of the stove; or obtaining the type of oil for the range hood input by the user.

[0098] The aforementioned smoke intake and influence coefficient determination module is used to collect the first wind speed in the fiber-free environment and the second wind speed in the fiber-containing environment through a wind speed sensor installed after the fiber detection structure; and to determine the fiber density based on the first and second wind speeds.

[0099] The aforementioned smoke intake and influence coefficient determination module is used to intercept the range hood's fibers by rotating the fiber detection structure; to collect the range hood's first wind speed in a fiber-free environment using a wind speed sensor; and to collect the range hood's second wind speed in a fiber-containing environment by rotating the fiber detection structure and using a wind speed sensor.

[0100] The aforementioned module for determining smoke intake and influence coefficient is used to calculate the wind speed difference between the first wind speed and the second wind speed; and to determine the fiber density based on the wind speed difference and the pre-set correspondence between the wind speed difference and fiber density.

[0101] The above-mentioned smoke intake and influence coefficient determination module is used to calculate the smoke intake of the range hood using the following formula: Y=S×r×t×c; where Y is the smoke intake of the range hood, S is the air inlet area, r is the air inlet velocity of the range hood, t is the smoke concentration of the range hood, and c is the usage time of the range hood.

[0102] The above-mentioned smoke intake and influence coefficient determination module is used for at least one of the following: determining the dust influence coefficient of the range hood based on dust concentration; determining the fiber influence coefficient of the range hood based on fiber density; and determining the oil influence coefficient of the range hood based on oil type.

[0103] The above-mentioned corrected smoke intake determination module is used to determine the corrected smoke intake of the range hood through the following formula: P=Y / (Z1×Z2×Z3); where P is the corrected smoke intake, Z1 is the dust influence coefficient, Z2 is the fiber influence coefficient, and Z3 is the oil influence coefficient; where, if the parameter corresponding to the influence coefficient is not obtained, the influence coefficient is set to 1.

[0104] The aforementioned range hood includes a cleaning state, a working state, and a closed state; the aforementioned range hood control module is used to control the range hood from the closed state to the working state, opening the range hood's smoke baffle to the corresponding working state range; and to control the range hood from the working state to the cleaning state, opening the range hood's smoke baffle to the corresponding cleaning state range. The aforementioned device also includes: a range hood alarm module, used to control the range hood's alarm module to perform an alarm operation to prompt the user to clean the range hood.

[0105] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the range hood fume detection device described above can be referred to the corresponding process in the aforementioned embodiments of the range hood fume detection method, and will not be repeated here.

[0106] Example 4:

[0107] This invention also provides an electronic device for operating the above-described method for detecting oil fumes from a range hood; see [link to previous document]. Figure 6 The diagram shows the structure of an electronic device, which includes a memory 100 and a processor 101. The memory 100 stores one or more computer instructions, which are executed by the processor 101 to implement the above-mentioned method for detecting oil fumes in a range hood.

[0108] Furthermore, Figure 6 The electronic device shown also includes a bus 102 and a communication interface 103, with the processor 101, the communication interface 103 and the memory 100 connected via the bus 102.

[0109] The memory 100 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 103 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network. The bus 102 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 6 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0110] Processor 101 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 101 or by instructions in software form. Processor 101 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a readily available storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 100, and processor 101 reads information from memory 100 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0111] This invention also provides a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are called and executed by a processor, they cause the processor to implement the above-mentioned oil fume detection method for a range hood. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0112] The computer program product of the range hood fume detection method, device and electronic device provided in the embodiments of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the preceding method embodiments. For specific implementation, please refer to the method embodiments, which will not be repeated here.

[0113] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and / or device described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0114] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0115] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0116] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0117] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for detecting oil fumes from a range hood, characterized in that, The method includes: Determine the smoke intake volume of the range hood and the influence coefficient of the range hood; wherein the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient, and oil influence coefficient; The corrected smoke intake of the range hood is determined based on the smoke intake volume of the range hood and the influence coefficient of the range hood. Accumulate the corrected smoke intake of the range hood determined each time to obtain the cumulative corrected smoke intake; If the cumulative corrected smoke intake is greater than a preset threshold, the range hood is controlled to a cleaning state, and the cumulative corrected smoke intake is reset to zero. The steps for determining the smoke intake volume and influence coefficient of a range hood include: obtaining parameters of the range hood; wherein the parameters of the range hood include: air inlet area, air inlet velocity, smoke concentration, and usage time; the parameters of the range hood also include at least one of the following: dust concentration, fiber density, and oil type; determining the smoke intake volume of the range hood based on the parameters of the range hood; and determining the influence coefficient of the range hood based on the parameters of the range hood. The steps for obtaining parameters of a range hood include at least one of the following: collecting the dust concentration in the air using a dust concentration sensor; detecting the fiber density using a fiber detection structure; determining the oil type based on an image of food on the stove; or, obtaining the oil type of the range hood input by the user. The step of detecting the fiber density using a fiber detection structure includes: acquiring a first wind speed in a fiber-free environment and a second wind speed in a fiber-containing environment using a wind speed sensor disposed after the fiber detection structure; and determining the fiber density based on the first wind speed and the second wind speed.

2. The method according to claim 1, characterized in that, The steps to obtain the parameters of a range hood must include at least one of the following: The air velocity at the air inlet of the range hood is collected by a wind speed sensor installed at the air inlet of the range hood. The oil fume concentration of the range hood is collected by an oil fume concentration sensor; Determine the operating level of the range hood, and determine the air inlet area of ​​the range hood based on the operating level; The usage time of the range hood is determined based on the current time and the start time of the range hood.

3. The method according to claim 1, characterized in that, The steps of acquiring a first wind speed in a fiber-free environment and a second wind speed in a fiber-containing environment using a wind speed sensor installed after the fiber detection structure include: The fiber detection structure intercepts the fibers of the range hood through rotation; The first wind speed of the range hood is collected by the wind speed sensor in a fiber-free environment; The fiber detection structure is rotated in a fiber-containing environment, and the second wind speed of the range hood is collected by the wind speed sensor.

4. The method according to claim 1, characterized in that, The step of determining the fiber density based on the first wind speed and the second wind speed includes: Calculate the wind speed difference between the first wind speed and the second wind speed; The fiber density is determined based on the wind speed difference and the pre-set correspondence between the wind speed difference and fiber density.

5. The method according to claim 1, characterized in that, The step of determining the smoke intake volume of the range hood based on its parameters includes: The smoke intake of the range hood is calculated using the following formula: Y = S × r × t × c; where Y is the smoke intake of the range hood, S is the area of ​​the air inlet, r is the air velocity at the air inlet of the range hood, t is the smoke concentration of the range hood, and c is the usage time of the range hood.

6. The method according to claim 1, characterized in that, The step of determining the influence coefficient of the range hood based on its parameters includes at least one of the following: The dust impact coefficient of the range hood is determined based on the dust concentration. The fiber influence coefficient of the range hood is determined based on the fiber density; The oil type influence coefficient of the range hood is determined based on the oil type.

7. The method according to claim 5, characterized in that, The step of determining the corrected smoke intake of the range hood based on the smoke intake volume and the influence coefficient of the range hood includes: The corrected smoke intake of the range hood is determined by the following formula: P = Y / (Z1 × Z2 × Z3); where P is the corrected smoke intake, Z1 is the dust influence coefficient, Z2 is the fiber influence coefficient, and Z3 is the oil influence coefficient. If the parameter corresponding to the influence coefficient is not obtained, the influence coefficient is set to 1.

8. The method according to claim 1, characterized in that, The range hood includes a cleaning state, a working state, and a closed state; the steps of controlling the range hood to the cleaning state include: Control the range hood from the off state to the working state, and open the range hood's smoke baffle to the corresponding working state range; The range hood is switched from its operating state to the cleaning state, and the smoke baffle of the range hood is opened to the corresponding cleaning state range.

9. The method according to claim 1, characterized in that, If, after each step, the sum of the corrected smoke intake amounts of the range hood is greater than a preset threshold, the method further includes: The alarm module of the range hood is controlled to perform an alarm operation to prompt the user to clean the range hood.

10. A range hood fume detection device, characterized in that, The device includes: The smoke intake volume and influence coefficient determination module is used to determine the smoke intake volume of the range hood and the influence coefficient of the range hood; wherein, the influence coefficient includes at least one of the following: dust influence coefficient, fiber influence coefficient, and oil influence coefficient; The corrected smoke intake volume determination module is used to determine the corrected smoke intake volume of the range hood based on the smoke intake volume of the range hood and the influence coefficient of the range hood; The corrected smoke intake volume accumulation module is used to accumulate the corrected smoke intake volume of the range hood determined each time to obtain the cumulative corrected smoke intake volume; The range hood control module is used to control the range hood to a cleaning state and reset the cumulative corrected smoke intake to zero if the cumulative corrected smoke intake is greater than a preset threshold. The smoke intake volume and influence coefficient determination module is used to acquire parameters of the range hood; wherein, the parameters of the range hood include: air inlet area, air inlet velocity, smoke concentration, and usage time; the parameters of the range hood also include at least one of the following: dust concentration, fiber density, and oil type; the smoke intake volume of the range hood is determined based on the parameters of the range hood; the influence coefficient of the range hood is determined based on the parameters of the range hood; The smoke intake volume and influence coefficient determination module is used to collect the dust concentration in the air through a dust concentration sensor; detect the fiber density through a fiber detection structure; determine the oil type based on the food image of the stove; or, obtain the oil type of the range hood input by the user. The smoke intake volume and influence coefficient determination module is used to collect a first wind speed in a fiber-free environment and a second wind speed in a fiber-containing environment using a wind speed sensor installed after the fiber detection structure; and to determine the fiber density based on the first wind speed and the second wind speed.

11. An electronic device, characterized in that, The device includes a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the steps of the oil fume detection method for a range hood according to any one of claims 1-9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the steps of the oil fume detection method for a range hood according to any one of claims 1-9.

Images