Range hood control method, system, range hood, equipment and medium

Abstract

The present disclosure provides a range hood control method, system, range hood, device, and medium. The control method includes: collecting first temperature values ​​above a stovetop from different viewing angles to obtain first temperature distribution information above the stovetop, and filtering out burner areas; for a burner within any burner area, collecting actual temperature values ​​above the burner from different viewing angles; based on the different actual temperature values, determining the actual operating scenario of the range hood, and controlling the range hood to operate in an operating mode that matches the actual operating scenario. By providing a temperature acquisition device with a variable viewing angle opening on the range hood and adjusting the deflection angle of the temperature acquisition device via a base, the temperature above the stovetop from different viewing angles can be acquired, matched to the actual operating scenario, and the range hood can be accurately controlled to switch on and off and shift gears, thereby better adapting to the current cooking state, improving the fume extraction effect, and enhancing the user's cooking experience.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of smart home appliances, and in particular relates to a control method and system for a range hood, a range hood, a device, and a medium. Background Art

[0002] Range hoods are a common kitchen appliance, essential for extracting cooking fumes. Many range hoods now feature built-in voice interaction and infrared temperature measurement. Traditional range hoods require a corresponding signal transceiver module for stovetop interaction, hindering user flexibility in selecting a stove. Traditional range hood motors typically operate at a fixed gear or speed, making them less adaptable to changes in cooking conditions. Furthermore, the smoke sensors in traditional range hoods primarily identify the presence of smoke, using optical or electrical signals near the sensor to determine smoke levels. This delay in response to cooking conditions requires the sensor to wait until smoke begins to diffuse before adjusting the speed to extract the smoke. Consequently, range hoods that integrate with stoves through infrared temperature measurement have emerged.

[0003] However, when the infrared temperature measurement function of the range hood is linked with the stove, it usually uses a low-cost monochromatic infrared sensor similar to a thermopile to measure the average temperature in the field of view at a fixed viewing angle. Figure 1 As shown, the average temperature within the field of view at a fixed viewing angle is generally measured (i.e., the average temperature of the circular area of ​​the conical projection in the figure). In different situations, such as when the target temperature measurement area is larger than the field of view (case A in the figure), the target temperature measurement area is equal to the field of view (case B in the figure), and the target temperature measurement area is smaller than the field of view (case C in the figure), the actual temperature measurement effect varies greatly, and the signal characteristic value varies greatly. It is difficult to accurately identify actual working scenarios such as pots of different sizes and the presence or absence of pots, and manually adjusting the sensor gear will result in slow temperature measurement feedback, making it difficult to adjust the range hood working mode in a timely and accurate manner.

[0004] In addition, the infrared sensors on the range hoods are usually set directly above each burner to collect the burner temperature one by one, but this method will cause problems such as increased costs and waste of resources. Summary of the Invention

[0005] The technical problem to be solved by the present disclosure is to overcome the defects of the prior art in which the actual temperature of each burner is collected one-to-one by multiple temperature collection devices to adjust the working mode of the range hood, resulting in increased overall cost of the range hood and waste of resources, and to provide a range hood control method, system, range hood, equipment and medium.

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

[0007] The present disclosure provides a control method for a range hood, wherein a temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood, and the temperature acquisition device is rotated and adjusted by a base with a variable deflection angle. The control method includes:

[0008] Using the temperature acquisition device to acquire first temperature values ​​at different locations above the stove at different acquisition viewing angles to obtain first temperature distribution information above the stove;

[0009] The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base;

[0010] Based on the first temperature distribution information, selecting burner areas corresponding to a plurality of burners on the stove surface;

[0011] For any burner in the burner area, the temperature acquisition device is used to acquire actual temperature values ​​above the burner at different acquisition viewing angles;

[0012] Based on the different actual temperature values, the actual working scene of the range hood is determined, and the range hood is controlled to operate in a working mode that matches the actual working scene.

[0013] Preferably, the step of screening out burner areas corresponding to a plurality of burners on the stove based on the temperature distribution information includes:

[0014] Based on the first temperature distribution information, screening out the burner head area that meets the first preset condition;

[0015] The first preset condition is used to indicate that there is a first continuous area on the stove surface where the first temperature value is higher than a first preset temperature value, and the first continuous area is the burner head area.

[0016] Preferably, the step of screening out burner areas corresponding to a plurality of burners on the stove based on the temperature distribution information includes:

[0017] Based on the temperature distribution information, screening out a non-burner head area that meets a second preset condition;

[0018] The second preset condition is used to indicate that there is a second continuous area on the stovetop where the first temperature value is lower than the second preset temperature value, and the second continuous area is a non-burner area;

[0019] According to the non-burner head area, the remaining area on the cooktop is acquired and used as the burner head area corresponding to the plurality of burners.

[0020] Preferably, the control method further includes:

[0021] determining the working status of each burner according to the actual temperature value above each burner;

[0022] The operating mode of the range hood is determined based on the operating status of all the burners.

[0023] Preferably, there are two burners on the stove top, and the temperature collection device is arranged on the range hood and is located at a position corresponding to the center of the line connecting the two burners.

[0024] Preferably, when the acquisition viewing angle includes a viewing angle opening, the step of determining the actual working scene of the range hood based on different actual temperature values, and controlling the range hood to operate in a working mode matching the actual working scene includes:

[0025] In different preset working scenarios, the temperature acquisition device is used to respectively acquire a plurality of sets of first historical data, each set of the historical data including a first historical temperature value at a set viewing angle;

[0026] Based on the plurality of sets of the first historical data under each of the preset working scenarios, constructing a first preset temperature curve corresponding to the preset working scenario;

[0027] Using the temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of the actual data includes a first actual temperature value corresponding to an actual viewing angle;

[0028] generating a first actual temperature curve corresponding to the current scene based on the plurality of sets of the first actual data;

[0029] The first actual temperature curve is compared with the different first preset temperature curves, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0030] Preferably, when the acquisition viewing angle includes a deflection angle, the step of determining the actual working scene of the range hood based on different actual temperature values, and controlling the range hood to operate in a working mode matching the actual working scene includes:

[0031] Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle;

[0032] In different preset working scenarios, the temperature collection device is used to collect several groups of second historical data, each group of the second historical data includes a second historical temperature value at a set deflection angle;

[0033] Based on the plurality of sets of the second historical data under each of the preset working scenarios, construct a second preset temperature curve corresponding to the preset working scenario;

[0034] Using the temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of the second actual data includes a second actual temperature value corresponding to an actual deflection angle;

[0035] generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data;

[0036] The second actual temperature curve is compared with the different second preset temperature curve, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0037] Preferably, the step of using the temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of the second actual data including a second actual temperature value corresponding to an actual deflection angle, includes:

[0038] The closest edge of the temperature collection device toward the burner area is defined as the minimum deflection angle, and the farthest edge of the temperature collection device toward the burner area is defined as the maximum deflection angle. The actual deflection angles are sequentially increased, and the second actual temperature value corresponding to each actual deflection angle is collected.

[0039] acquiring a maximum actual temperature value and a minimum actual temperature value based on the second actual temperature values ​​corresponding to the respective actual deflection angles;

[0040] Determining whether a difference between the maximum actual temperature value and the minimum actual temperature value is greater than a preset difference;

[0041] If yes, then executing the step of generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data;

[0042] If not, it is determined that the burner is in an off state, and the range hood is controlled to be turned off.

[0043] Preferably, the control method further includes:

[0044] Increasing the set deflection angle in sequence, and acquiring a second historical temperature value corresponding to each set deflection angle to obtain a plurality of sets of the second historical data;

[0045] Based on the plurality of sets of the second historical data, fitting and generating the second preset temperature curve;

[0046] Increasing the actual deflection angle in sequence, and acquiring a second actual temperature value corresponding to each actual deflection angle to obtain a plurality of sets of the second actual data;

[0047] Based on the plurality of sets of the second actual data, fitting and generating the second actual temperature curve;

[0048] The step of comparing the second actual temperature curve with the different second preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene includes:

[0049] Determining whether the second actual temperature curve conforms to a trend of first rising, being stable in the middle, and then falling;

[0050] If so, it is determined that a cooking device is placed on the burner.

[0051] Preferably, after the step of determining that a cooking device is placed on the burner, the control method further comprises:

[0052] Obtaining a deflection angle change value corresponding to a temperature plateau segment in the second actual temperature curve;

[0053] Determining whether the deflection angle change value is greater than a preset change value;

[0054] If so, determining that the size of the cooking device is larger than a preset size, and controlling the range hood to operate at a first power;

[0055] If not, determining that the size of the cooking device is smaller than or equal to the preset size, and controlling the range hood to operate at a second power;

[0056] The first power is greater than the second power.

[0057] Preferably, the control method further includes:

[0058] When the second actual temperature curve does not conform to a trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has four peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a high-fire state, and the operating power of the range hood is controlled to be reduced to a third power;

[0059] and / or,

[0060] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has only two peaks, determining whether the second actual temperature curve meets the third preset condition and the fourth preset condition;

[0061] The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; the fourth preset condition is that the average value of the second actual temperature value at each of the actual deflection angles is less than a preset average value, or the decrease value of the second actual temperature value within a unit deflection angle is less than a preset decrease value;

[0062] If so, it is determined that the burner is in the off state, and the range hood is controlled to be turned off.

[0063] Preferably, the control method further includes:

[0064] Before controlling the operating power of the range hood to be reduced to the third power, generating a first prompt message for reducing the fire power of the burner;

[0065] and / or,

[0066] When the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, a second prompt message for controlling the furnace head to be closed is generated.

[0067] Preferably, the control method further includes:

[0068] When the second actual temperature curve does not have four peaks and does not have two peaks, obtaining a temperature change curve of the second actual temperature value within a second preset time at a fixed deflection angle;

[0069] When the second actual temperature value changes periodically within the second preset time, it is determined that the cooking device on the burner is in an overturned state, and the operating power of the range hood is controlled to increase to a fourth power.

[0070] The present disclosure further provides a control system for a range hood, wherein a temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood, and the temperature acquisition device is rotated and adjusted by a base with a variable deflection angle. The control system comprises:

[0071] a temperature distribution acquisition module, configured to use the temperature acquisition device to acquire first temperature values ​​at different locations above the stove under different acquisition viewing angles, so as to obtain first temperature distribution information above the stove;

[0072] The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base;

[0073] a burner area determination module, configured to screen out burner areas corresponding to a plurality of burners on the stovetop based on the first temperature distribution information;

[0074] an actual temperature acquisition module, configured to acquire, for any burner within the burner area, actual temperature values ​​above the burner at different acquisition viewing angles using the temperature acquisition device;

[0075] The working mode control module is used to determine the actual working scene of the range hood based on different actual temperature values, and control the range hood to operate in a working mode matching the actual working scene.

[0076] Preferably, the burner area determination module is further used for:

[0077] Based on the first temperature distribution information, screening out the burner head area that meets the first preset condition;

[0078] The first preset condition is used to indicate that there is a first continuous area on the stove surface where the first temperature value is higher than a first preset temperature value, and the first continuous area is the burner head area.

[0079] Preferably, the burner area determination module is further used for:

[0080] Based on the temperature distribution information, screening out a non-burner head area that meets a second preset condition;

[0081] The second preset condition is used to indicate that there is a second continuous area on the stovetop where the first temperature value is lower than the second preset temperature value, and the second continuous area is a non-burner area;

[0082] According to the non-burner head area, the remaining area on the cooktop is acquired and used as the burner head area corresponding to the plurality of burners.

[0083] Preferably, the working mode control module is further used to:

[0084] determining the working status of each burner according to the actual temperature value above each burner;

[0085] The operating mode of the range hood is determined based on the operating status of all the burners.

[0086] In an implementable solution, there are two burners on the stove top, and the temperature collection device is arranged on the range hood and is located at a position corresponding to the center of the line connecting the two burners.

[0087] Preferably, when the acquisition viewing angle includes a viewing angle opening, the working mode control module is further configured to:

[0088] In different preset working scenarios, the temperature acquisition device is used to respectively acquire a plurality of sets of first historical data, each set of the historical data including a first historical temperature value at a set viewing angle;

[0089] Based on the plurality of sets of the first historical data under each of the preset working scenarios, constructing a first preset temperature curve corresponding to the preset working scenario;

[0090] Using the temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of the actual data includes a first actual temperature value corresponding to an actual viewing angle;

[0091] generating a first actual temperature curve corresponding to the current scene based on the plurality of sets of the first actual data;

[0092] The first actual temperature curve is compared with the different first preset temperature curves, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0093] Preferably, when the acquisition viewing angle includes a deflection angle, the working mode control module is further configured to:

[0094] Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle;

[0095] In different preset working scenarios, the temperature collection device is used to collect several groups of second historical data, each group of the second historical data includes a second historical temperature value at a set deflection angle;

[0096] Based on the plurality of sets of the second historical data under each of the preset working scenarios, construct a second preset temperature curve corresponding to the preset working scenario;

[0097] Using the temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of the second actual data includes a second actual temperature value corresponding to an actual deflection angle;

[0098] generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data;

[0099] The second actual temperature curve is compared with the different second preset temperature curve, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0100] Preferably, the working mode control module is further used to:

[0101] The closest edge of the temperature collection device toward the burner area is defined as the minimum deflection angle, and the farthest edge of the temperature collection device toward the burner area is defined as the maximum deflection angle. The actual deflection angles are sequentially increased, and the second actual temperature value corresponding to each actual deflection angle is collected.

[0102] acquiring a maximum actual temperature value and a minimum actual temperature value based on the second actual temperature values ​​corresponding to the respective actual deflection angles;

[0103] Determining whether a difference between the maximum actual temperature value and the minimum actual temperature value is greater than a preset difference;

[0104] If yes, then executing the step of generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data;

[0105] If not, it is determined that the burner is in an off state, and the range hood is controlled to be turned off.

[0106] Preferably, the working mode control module is further used to:

[0107] Increasing the set deflection angle in sequence, and acquiring a second historical temperature value corresponding to each set deflection angle to obtain a plurality of sets of the second historical data;

[0108] Based on the plurality of sets of the second historical data, fitting and generating the second preset temperature curve;

[0109] Increasing the actual deflection angle in sequence, and acquiring a second actual temperature value corresponding to each actual deflection angle to obtain a plurality of sets of the second actual data;

[0110] Based on the plurality of sets of the second actual data, fitting and generating the second actual temperature curve;

[0111] The step of comparing the second actual temperature curve with the different second preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene includes:

[0112] Determining whether the second actual temperature curve conforms to a trend of first rising, being stable in the middle, and then falling;

[0113] If so, it is determined that a cooking device is placed on the burner.

[0114] Preferably, the working mode control module is further used to:

[0115] Obtaining a deflection angle change value corresponding to a temperature plateau segment in the second actual temperature curve;

[0116] Determining whether the deflection angle change value is greater than a preset change value;

[0117] If so, determining that the size of the cooking device is larger than a preset size, and controlling the range hood to operate at a first power;

[0118] If not, determining that the size of the cooking device is smaller than or equal to the preset size, and controlling the range hood to operate at a second power;

[0119] The first power is greater than the second power.

[0120] Preferably, the working mode control module is further used to:

[0121] When the second actual temperature curve does not conform to a trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has four peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a high-fire state, and the operating power of the range hood is controlled to be reduced to a third power;

[0122] and / or,

[0123] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has only two peaks, determining whether the second actual temperature curve meets the third preset condition and the fourth preset condition;

[0124] The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; the fourth preset condition is that the average value of the actual temperature values ​​at each actual deflection angle is less than a preset average value, or the drop value of the actual temperature value within a unit deflection angle is less than a preset drop value;

[0125] If so, it is determined that the burner is in the off state, and the range hood is controlled to be turned off.

[0126] Preferably, the control system further includes a prompt information generating module for:

[0127] Before controlling the operating power of the range hood to be reduced to the third power, generating a first prompt message for reducing the fire power of the burner;

[0128] and / or,

[0129] When the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, a second prompt message for controlling the furnace head to be closed is generated.

[0130] Preferably, the control system further comprises:

[0131] A temperature change curve fitting module, configured to obtain a temperature change curve of the actual temperature value at a fixed deflection angle within a second preset time when the second actual temperature curve has no four peaks and no two peaks;

[0132] When the actual temperature value changes periodically within the second preset time, it is determined that the cooking device on the burner is in an overturning state, and the operating power of the range hood is controlled to increase to a fourth power.

[0133] The present disclosure also provides a range hood, which includes the above-mentioned range hood control system.

[0134] The present disclosure also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and configured to run on the processor, wherein the processor implements the above-mentioned range hood control method when executing the computer program.

[0135] The present disclosure also provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the above-mentioned range hood control method is implemented.

[0136] On the basis of conforming to the common sense in this field, the various preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present disclosure.

[0137] The positive progressive effect of the present disclosure is that by arranging a temperature acquisition device with a variable viewing angle opening on the range hood and adjusting the deflection angle of the temperature acquisition device through the base, the temperature above the stove surface under different acquisition viewing angles can be obtained to match the current actual working scene. At the same time, the temperature-time curve under a fixed viewing angle opening is used as a supplement to more accurately control the switch and gear switching of the range hood, thereby better adapting to the current cooking state, improving the effect of oil fume extraction, reducing the cost of the range hood, and enhancing the user's cooking experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0138] Figure 1 Schematic diagram of a common low-cost monochrome infrared sensor in the background technology of this disclosure.

[0139] Figure 2 This is the first flow chart of the range hood control method of embodiment 1 of the present disclosure.

[0140] Figure 3 This is a schematic diagram of the first deflection angle of the temperature collection device on the range hood disclosed in the present invention.

[0141] Figure 4 Schematic diagram of the second deflection angle of the temperature collection device on the range hood disclosed in the present invention.

[0142] Figure 5 Schematic diagram of the third deflection angle of the temperature collection device on the range hood disclosed in the present invention.

[0143] Figure 6 Schematic diagram of the fourth deflection angle of the temperature collection device on the range hood disclosed in the present invention.

[0144] Figure 7 Schematic diagram of high fire and low fire when there is no pot on the stove of the present invention.

[0145] Figure 8 This is a curve diagram of the present invention without a pot and high fire.

[0146] Figure 9 This is a curve diagram of low heat without a pot disclosed in the present invention.

[0147] Figure 10 This is a schematic diagram of a scene in which a large pot and a small pot are placed on the stove of the present invention.

[0148] Figure 11 There is a graph of a large pot for this disclosure.

[0149] Figure 12 This is a graph showing a small pot in the present disclosure.

[0150] Figure 13 This is a curve chart for the pot flipping scenario disclosed in the present invention.

[0151] Figure 14 This is the second flow chart of the range hood control method of embodiment 1 of the present disclosure.

[0152] Figure 15 This is a schematic diagram of the first module of the control system of the range hood of Example 2 of the present disclosure.

[0153] Figure 16 This is a schematic diagram of the second module of the range hood control system of Example 2 of the present disclosure.

[0154] Figure 17 This is a schematic structural diagram of an electronic device according to embodiment 4 of the present disclosure. DETAILED DESCRIPTION

[0155] The present disclosure is further illustrated below by way of examples, but the present disclosure is not limited to the scope of the examples.

[0156] Example 1

[0157] The present disclosure provides a control method for a range hood, wherein a temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood, and the temperature acquisition device is rotated and adjusted by a base with a variable deflection angle, such as Figure 2 As shown, the control method includes the following steps:

[0158] S1. Using a temperature collection device to collect first temperature values ​​at different locations above the stove at different collection angles to obtain first temperature distribution information above the stove;

[0159] The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base;

[0160] S2. Filtering burner areas corresponding to a plurality of burners on the stovetop based on the first temperature distribution information;

[0161] S3. For any burner in the burner area, use a temperature acquisition device to acquire the actual temperature value above the burner at different acquisition angles;

[0162] S4. Based on different actual temperature values, determine the actual working scene of the range hood, and control the range hood to operate in a working mode that matches the actual working scene.

[0163] Specifically, the range hood is provided with only one temperature collecting device for collecting the temperature above each burner. The viewing angle of the temperature collecting device is adjustable, and the deflection angle can also be adjusted by rotating the base.

[0164] In step S1, the first temperature values ​​at different areas above the stove are collected under different collection angles to obtain the first temperature distribution information above the stove, such as which areas have higher temperatures and which areas have lower temperatures. In step S2, based on the first temperature distribution information, the burner areas corresponding to several burners on the stove surface are screened out, that is, the blank areas where no burners are set are excluded. In step S3, for any burner in the burner area, a temperature collection device is used to collect the actual temperature values ​​above the burner under different collection angles. In step S4, based on different actual temperature values, the actual working scene of the range hood (such as stir-frying, washing pots, etc.) is determined, and the switch and gear changes of the range hood are controlled to work in a working mode that matches the actual working scene.

[0165] In this solution, by setting a temperature acquisition device with a variable viewing angle on the range hood and adjusting the deflection angle of the temperature acquisition device through the base, the temperature above the stove surface under different acquisition angles can be obtained, and the current actual working scene can be matched to control the switch and gear switching of the range hood, so as to better adapt to the current cooking state, improve the effect of oil fume extraction, reduce the cost of the range hood, and enhance the user's cooking experience.

[0166] In one feasible solution, step S2 includes:

[0167] Based on the first temperature distribution information, a furnace head area meeting a first preset condition is screened out;

[0168] The first preset condition is used to indicate that there is a first continuous area on the stove surface where the first temperature value is higher than the first preset temperature value, and the first continuous area is the stove head area.

[0169] Specifically, the temperature of the burner head area is relatively high, and therefore, the burner head area can be obtained by screening out first continuous areas whose temperatures are all higher than a first preset temperature value.

[0170] In this solution, by screening out the burner area on the stove surface, the temperature information above the burner can be collected more accurately, avoiding the collection of invalid information, thereby adjusting the working mode of the range hood more accurately.

[0171] In one feasible solution, step S2 includes:

[0172] Based on the temperature distribution information, a non-burner head area meeting the second preset condition is screened out;

[0173] The second preset condition is used to indicate that there is a second continuous area on the stove surface where the first temperature value is lower than the second preset temperature value, and the second continuous area is a non-burner area;

[0174] According to the non-burner area, the remaining area on the stove surface is obtained and used as the burner area corresponding to the plurality of burners.

[0175] Specifically, since there is no blank area where the burner head is set, that is, the temperature of the non-burner head area is lower, the non-burner head area can be obtained by screening out the second continuous area whose temperature is lower than the second preset temperature value, and the non-burner head area is eliminated from the stove surface area, and the remaining area is obtained as the burner head area.

[0176] In this solution, by screening out the burner area on the stove surface, the temperature information above the burner can be collected more accurately, avoiding the collection of invalid information, thereby adjusting the working mode of the range hood more accurately.

[0177] In one feasible solution, the control method further includes:

[0178] Determine the working status of each burner according to the actual temperature value above each burner;

[0179] Determine the operating mode of the range hood based on the working status of all burners.

[0180] Specifically, the final working mode of the range hood can only be determined after determining the working status of each burner. Otherwise, there may be a burner in a high-fire state with a pot being stir-fried on it, but the range hood may be turned off.

[0181] In this solution, by traversing the working status of all burners and then determining the working mode of the range hood, the accuracy and rationality of the range hood operation can be guaranteed.

[0182] In one feasible solution, there are two burners on the stove top, and the temperature acquisition device is arranged on the range hood and is located at a position corresponding to the center of the line connecting the two burners.

[0183] In this solution, by setting the temperature acquisition device on the range hood and locating it at a position corresponding to the center of the line connecting the two burners, it can be ensured that the temperature acquisition device can fully collect the temperature above each burner, thereby making a reasonable judgment on the current actual working scene and improving the accuracy of the range hood working control.

[0184] In one feasible solution, when the collected viewing angle includes viewing angle opening, step S4 includes:

[0185] In different preset working scenarios, a temperature collection device is used to collect several groups of first historical data, each group of historical data includes a first historical temperature value under a set viewing angle opening;

[0186] Based on the plurality of sets of first historical data under each preset working scene, constructing a first preset temperature curve corresponding to the preset working scene;

[0187] Using a temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of actual data includes a first actual temperature value corresponding to an actual viewing angle;

[0188] Based on the plurality of sets of first actual data, generating a first actual temperature curve corresponding to the current scene;

[0189] The first actual temperature curve is compared with a different first preset temperature curve, and the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0190] First, by collecting the first historical temperature values ​​at multiple set viewing angles, a first preset temperature curve corresponding to the preset working scene is generated by fitting, and the curve data is stored in the range hood's control chip as a built-in scene of the range hood, such as with a pot, without a pot, large pot, small pot, etc. When the range hood is actually working, the first actual temperature values ​​at multiple actual viewing angles are collected, and the first actual temperature curve corresponding to the current working scene is generated by fitting. Among them, the temperature collection device continuously changes the viewing angle opening of the collection view at a preset frequency. Finally, the first actual temperature curve is compared and analyzed with the different first preset temperature curves read, and the actual working scene is matched, and the range hood is controlled to operate in the corresponding working mode.

[0191] In this solution, a temperature acquisition device with a variable viewing angle opening is set on the range hood, and the temperature acquisition device is controlled to continuously change the viewing angle opening at a preset frequency to obtain a viewing angle opening-temperature curve. This curve is compared with the curves of multiple built-in preset working scenes of the range hood to match the current actual working scene, so as to control the switch and gear switching of the range hood, thereby better adapting to the current cooking state, improving the effect of oil fume extraction, and enhancing the user's cooking experience.

[0192] In one feasible solution, when the acquisition viewing angle includes a deflection angle, step S5 includes:

[0193] Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle;

[0194] In different preset working scenarios, a temperature collection device is used to collect several groups of second historical data, each group of second historical data includes a second historical temperature value under a set deflection angle;

[0195] Based on the plurality of sets of second historical data under each preset working scene, constructing a second preset temperature curve corresponding to the preset working scene;

[0196] Using a temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of second actual data includes a second actual temperature value corresponding to an actual deflection angle;

[0197] generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of second actual data;

[0198] The second actual temperature curve is compared with a different second preset temperature curve, and the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0199] The viewing angle opening of the temperature acquisition device is controlled to be a fixed viewing angle opening, preferably a narrow viewing angle opening, such as 5°. By collecting the second historical temperature values ​​under multiple set deflection angles, a second preset temperature curve corresponding to the preset working scene is generated by fitting, and the curve data is stored in the control chip of the range hood as a built-in scene of the range hood, such as with a pot, without a pot, a large pot, a small pot, etc. When the range hood is actually working, the second actual temperature values ​​under multiple actual deflection angles are collected, and the second actual temperature curve corresponding to the current working scene is generated by fitting. Among them, the deflection angle is adjusted by rotating the base. Finally, the second actual temperature curve is compared and analyzed with the different second preset temperature curves read, the actual working scene is matched, and the range hood is controlled to work in the corresponding working mode.

[0200] In this solution, the deflection angle of the temperature acquisition device is changed by rotating the base to obtain a deflection angle-temperature curve, and the curve is compared with the curves of multiple built-in preset working scenes of the range hood to match the current actual working scene to control the switch and gear switching of the range hood, so as to better adapt to the current cooking state, improve the effect of oil fume extraction, and enhance the user's cooking experience.

[0201] In one feasible solution, the steps of using a temperature acquisition device to acquire several sets of actual data corresponding to the current scene, each set of actual data including an actual temperature value corresponding to an actual deflection angle, include:

[0202] The minimum deflection angle is the closest edge of the temperature acquisition device toward the furnace head area, and the maximum deflection angle is the farthest edge of the temperature acquisition device toward the furnace head area. The actual deflection angle is increased in sequence, and the actual temperature value corresponding to each actual deflection angle is collected;

[0203] Based on the actual temperature values ​​corresponding to the actual deflection angles, a maximum actual temperature value and a minimum actual temperature value are obtained;

[0204] Determine whether the difference between the maximum actual temperature value and the minimum actual temperature value is greater than a preset difference;

[0205] If yes, then executing the step of generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of actual data;

[0206] If not, make sure the burner is in the off state and control the range hood to turn off.

[0207] Specifically, if there is substantially no difference in temperature between different areas above the burner, it indicates that the burner is not turned on or has been turned off for a period of time, and the range hood does not need to be turned on at this time.

[0208] In this solution, by collecting the maximum and minimum actual temperatures above the burner to determine whether the burner is in the firing state, unnecessary operation of the range hood can be avoided, thereby saving energy and improving the user experience.

[0209] In one feasible solution, the control method further includes:

[0210] Increasing the set deflection angle in sequence, and obtaining the second historical temperature value corresponding to each set deflection angle to obtain several sets of second historical data;

[0211] Based on the plurality of sets of second historical data, a second preset temperature curve is generated by fitting;

[0212] Increasing the actual deflection angle in sequence, and obtaining a second actual temperature value corresponding to each actual deflection angle to obtain several sets of second actual data;

[0213] Based on the plurality of sets of second actual data, a second actual temperature curve is generated by fitting;

[0214] The steps of comparing the second actual temperature curve with a different second preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene include:

[0215] Determine whether the second actual temperature curve conforms to a trend of first rising, then being stable in the middle, and finally falling;

[0216] If so, make sure there is cooking equipment on the burner.

[0217] Specifically, from one edge of any burner to the other, within the range where the pot is located, the actual temperature above the burner will remain relatively stable, while the actual temperature outside the pot will decrease. Therefore, if the second actual temperature curve follows a trend of first increasing, then stabilizing, and finally decreasing, it can be determined that a cooking device is placed on the burner.

[0218] In this solution, the presence of pots and pans above the stove can be determined by the changing trend of the actual temperature curve, and the range hood can be controlled to operate in an appropriate working mode, thereby achieving a better oil fume removal effect and improving the user experience.

[0219] In one feasible solution, after the step of determining that a cooking device is placed on the burner, the control method further includes:

[0220] Obtaining a deflection angle change value corresponding to a temperature plateau segment in a second actual temperature curve;

[0221] Determine whether the deflection angle change value is greater than a preset change value;

[0222] If so, determining that the size of the cooking device is larger than the preset size, and controlling the range hood to operate at the first power;

[0223] If not, determining that the size of the cooking device is smaller than or equal to the preset size, and controlling the range hood to operate at the second power;

[0224] The first power is greater than the second power.

[0225] Specifically, the deflection angle change value corresponding to the temperature stable segment in the second actual temperature curve is obtained. If the deflection angle is in the range of 5° to 35°, the corresponding second actual temperature value is in a stable and almost unchanged state, and the deflection angle change value is 30°; determine whether the deflection angle change value is greater than a preset change value, such as 25°; if so, it means that within the large range of the deflection angle change of the temperature acquisition device, the collected actual temperature values ​​are unchanged, which means that the size of the pot on the burner is large, and the range hood should be controlled to work at a larger power; if not, it means that within the large range of the deflection angle change of the temperature acquisition device, the collected actual temperature values ​​have changed, the size of the pot on the burner is small, and the range hood should be controlled to work at a smaller power.

[0226] In this solution, by judging the size relationship between the deflection angle change value of the stable section in the second actual temperature curve and the preset change value, the size of the cooking equipment on the burner can be further determined, and then the range hood can be controlled to absorb oil fumes in a more appropriate working mode.

[0227] In one feasible solution, the control method further includes:

[0228] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has four peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a high-fire state, and the operating power of the range hood is controlled to be reduced to the third power;

[0229] and / or,

[0230] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has only two peaks, determining whether the second actual temperature curve meets the third preset condition and the fourth preset condition;

[0231] The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; the fourth preset condition is that the average value of the actual temperature values ​​at each actual deflection angle is less than the preset average value, or the drop value of the actual temperature value within a unit deflection angle is less than the preset drop value;

[0232] If so, determine that the burner is in the off state and control the range hood to be turned off.

[0233] Specifically, when the burner is on high heat (i.e., there are inner and outer rings), the temperature measurement goes through four stages: outer ring, inner ring, inner ring, and outer ring. Therefore, the second actual temperature curve will have four peaks. Therefore, when the second actual temperature curve does not conform to the trend of first rising, then stabilizing, and then falling, that is, when there is no cooking equipment on the burner, it is further determined whether the second actual temperature curve has four peaks. If so, it is determined that there is no cooking equipment on the burner and the burner is on high heat, which does not generate much smoke. Therefore, the operating power of the range hood is controlled to be reduced to the third power.

[0234] When the second actual temperature curve has double peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a low-fire state, that is, the temperature measurement has gone through two stages: inner ring fire-inner ring fire.

[0235] When the burner is in a low-fire state, or when the burner is in a high-fire state and the power of the range hood has been reduced to a third power, it is determined whether the second actual temperature curve satisfies both the third preset condition and the fourth preset condition:

[0236] The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; that is, it means that there is no cooking equipment placed on the stove head for a long time.

[0237] The fourth preset condition is that the average value of the second actual temperature value at each actual deflection angle is less than the preset average value, or the drop value of the second actual temperature value within a unit deflection angle is less than the preset drop value; that is, the temperature above the furnace head is lower, or the temperature changes in different areas are small.

[0238] When the second actual temperature curve satisfies both the third preset condition and the fourth preset condition, it indicates that the burner is already in the closed state and the range hood can be controlled to be closed.

[0239] In this solution, when there is no cooking equipment placed above the burner, by determining whether the burner is in the off state and controlling the range hood to turn off when the burner is in the off state, unnecessary operation of the range hood can be avoided, thereby saving energy and improving the user experience.

[0240] In one feasible solution, the control method further includes:

[0241] Before controlling the operating power of the range hood to be reduced to the third power, generating a first prompt message for reducing the burner power;

[0242] and / or,

[0243] When the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, a second prompt message for controlling the furnace head to be closed is generated.

[0244] Specifically, when no cooking equipment is placed on the burner and the burner is in a high-fire state, a prompt is first given to reduce the fire power of the burner, and then the working power of the range hood is reduced.

[0245] When no cooking equipment is placed on the burner for a long time but the burner is still in the on-fire state, a prompt will appear to turn off the burner.

[0246] In this solution, by generating information prompting to reduce the firepower or turn off the fire, linkage control between the range hood and the stove can be achieved, thereby improving the user's cooking experience.

[0247] In one feasible solution, the control method further includes:

[0248] When the second actual temperature curve does not have four peaks and does not have two peaks, obtaining a temperature change curve of the actual temperature value at a fixed deflection angle within a second preset time;

[0249] When the second actual temperature value changes periodically within the second preset time, it is determined that the cooking device on the stove is in an overturning state, and the operating power of the range hood is controlled to increase to a fourth power.

[0250] Specifically, the temperature acquisition device is controlled to collect actual temperature values ​​over a certain period of time at a fixed deflection angle, generating a temperature-time curve. If the temperature above the burner fluctuates periodically within a certain period of time, it indicates that the user is flipping the pan, generating heavy smoke and requiring the range hood's operating power to be increased.

[0251] In this solution, the temperature-viewing angle opening curve is supplemented by the temperature-time curve, which can more accurately determine the current actual working scene of the range hood, and thus adaptively adjust the range hood to the corresponding working mode to achieve better oil fume extraction effect and enhance the user experience.

[0252] The following is a specific implementation method to illustrate the implementation process of the range hood control method provided by this embodiment:

[0253] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown in the figure, while the viewing angle of the temperature sensor remains unchanged, the position of the acquisition area can be changed by changing the deflection angle. A single temperature sensor rotates with a fixed narrow viewing angle, and the relationship between different deflection angles or positions and the average temperature changes is used to determine scene changes.

[0254] First, construct the "deflection angle-average temperature" curve under different scenarios

[0255] Figure 7 This is a schematic diagram of a stove without a pot. The left side shows high heat without a pot, and the right side shows low heat without a pot. Figure 8 This is a typical "deflection angle-average temperature" curve for a large fire without a pot (inner and outer ring fire of the stove). The average temperature changes with the sensor deflection angle: outer ring fire-inner ring fire-inner ring fire-outer ring fire, which conforms to the four-peak trend within a small range. Figure 9 This is a typical "deflection angle-average temperature" curve in a scene of low fire without a pot (ring fire inside the stove). The average temperature changes with the viewing angle in a small range, following a double-peak trend of first increasing, then decreasing, then increasing again, and finally decreasing.

[0256] Figure 10 This is a schematic diagram of the pots on the stove, with a large pot on the left and a small pot on the right. Figure 11 This is a typical "deflection angle-average temperature" curve in the case of a large pot. The temperature at the position covered by the pot is averaged by the pot and is relatively stable. The average temperature first rises as the viewing angle changes, then remains basically unchanged over a large range, and then decreases. Figure 12 This is the "deflection angle-average temperature" curve for a small pot. The temperature at the area covered by the pot is averaged across the pot and is relatively stable. The average temperature initially rises as the viewing angle changes, remains essentially constant within a small area, and then gradually decreases. However, flames may overflow from the edges, causing the temperature to rise.

[0257] Figure 13 When the temperature change does not conform to the previous conditions, you can switch to a fixed deflection angle to record the temperature cycle change within a period of time (the cycle must be within the range of a normal person flipping the pan), and then determine whether the current state is flipping the pan.

[0258] Figure 14 The following is a flow chart of the specific control method:

[0259] The monitoring device is first activated, and the base rotates the temperature sensor at a preset angular velocity. Temperature values ​​are collected at different locations above the stovetop from different viewing angles to determine the temperature distribution above the stovetop. Based on this temperature distribution, the distribution ranges for the left and right burners are then divided.

[0260] For any burner, a temperature acquisition device is used to collect the actual temperature values ​​above the burner under different acquisition angles. When the maximum and minimum temperature differences within the deflection angle range are less than or equal to T1, it means that there is basically no difference in temperature in different areas above the burner, which means that the burner is not turned on or has been turned off for a period of time, and the range hood does not need to be turned on at this time. When the temperature difference is greater than T1, it means that the stove is in use and the range hood needs to be turned on. The actual deflection angle-average temperature curve is compared and analyzed with the deflection angle-average temperature curves read under different preset scenarios to match the actual working scenario, and the range hood is controlled to operate in the corresponding working mode.

[0261] When the deflection angle-average temperature curve conforms to a trend of first rising, being stable in the middle, and then falling, it can be determined that cooking equipment is placed on the burner.

[0262] Determine whether the stable section is greater than the preset value L1; if so, it means that the size of the pot on the burner is large, and the range hood should be controlled to start or switch to medium gear and operate at a larger power; if not, it means that the size of the pot on the burner is small, and the range hood should be controlled to start or switch to low gear and operate at a smaller power.

[0263] When the deflection angle-average temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, that is, there is no cooking equipment on the burner, it is further judged whether the deflection angle-average temperature curve has four peaks. If so, it is determined that there is no cooking equipment placed on the burner and the burner is in a high fire state. At this time, not much oil smoke will be generated. Therefore, the working power of the range hood is controlled to be reduced to the third power.

[0264] When there are double peaks in the deflection angle-average temperature curve, it is determined that no cooking equipment is placed on the burner and the burner is in a low-fire state, that is, the temperature measurement has gone through the inner ring fire-inner ring fire two stages.

[0265] When the burner is in a low-fire state, or when the burner is in a high-fire state and the power of the range hood has been reduced to a third power, it is determined whether the deflection angle-average temperature curve satisfies both the third preset condition and the fourth preset condition:

[0266] The third preset condition is that the deflection angle-average temperature curve has four peaks or the duration of two peaks is greater than the first preset time; that is, it means that there is no cooking equipment placed on the stove top for a long time.

[0267] The fourth preset condition is that the maximum average value is less than the preset average value T a , or, the temperature drop slope is lower than k1, which means that the temperature above the furnace head is lower, or the temperature changes in different areas are smaller.

[0268] When the curve satisfies both the third and fourth preset conditions, it indicates that the burner is already in the closed state and the range hood can be controlled to be closed.

[0269] When no cooking equipment is placed on the burner for a long time but the burner is still in the on-fire state, a prompt will appear to turn off the burner.

[0270] If the deflection angle-average temperature curve doesn't match the above criteria, the temperature sensor is controlled to switch to a fixed deflection angle, and actual temperature values ​​are collected over a specific period of time, which is then fitted to a time-temperature curve. If the temperature above the burner fluctuates periodically over a specific period of time, it indicates that the user is actively flipping the pan, which generates significant smoke and requires the range hood to be activated or switched to high setting.

[0271] The control method of the range hood provided in this embodiment can obtain the temperature above the stove surface at different collection angles by arranging a temperature collection device with a variable viewing angle opening on the range hood and adjusting the deflection angle of the temperature collection device through the base, thereby matching the current actual working scene. At the same time, the temperature-time curve at a fixed viewing angle opening is used as a supplement to more accurately control the switching of the range hood and the gear switching, thereby better adapting to the current cooking state, improving the effect of oil fume extraction, reducing the cost of the range hood, and enhancing the user's cooking experience.

[0272] Example 2

[0273] This embodiment provides a range hood control system, wherein a temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood, and the temperature acquisition device is rotated and adjusted by a base with a variable deflection angle, such as Figure 15 As shown, the control system includes:

[0274] The temperature distribution acquisition module 1 is configured to use a temperature acquisition device to acquire first temperature values ​​at different locations above the stove at different acquisition angles to obtain first temperature distribution information above the stove;

[0275] The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base;

[0276] A burner area determination module 2 is configured to select burner areas corresponding to a plurality of burners on the stove surface based on the first temperature distribution information;

[0277] The actual temperature acquisition module 3 is used to acquire the actual temperature value above the burner at different acquisition angles using a temperature acquisition device for the burner in any burner area;

[0278] The working mode control module 4 is used to determine the actual working scene of the range hood based on different actual temperature values, and control the range hood to operate in a working mode that matches the actual working scene.

[0279] In one feasible solution, the burner area determination module 2 is further configured to:

[0280] Based on the first temperature distribution information, a furnace head area meeting a first preset condition is screened out;

[0281] The first preset condition is used to indicate that there is a first continuous area on the stove surface where the first temperature value is higher than the first preset temperature value, and the first continuous area is the stove head area.

[0282] In one feasible solution, the burner area determination module 2 is further configured to:

[0283] Based on the temperature distribution information, a non-burner head area meeting the second preset condition is screened out;

[0284] The second preset condition is used to indicate that there is a second continuous area on the stove surface where the first temperature value is lower than the second preset temperature value, and the second continuous area is a non-burner area;

[0285] According to the non-burner area, the remaining area on the stove surface is obtained and used as the burner area corresponding to the plurality of burners.

[0286] In one feasible solution, the working mode control module 4 is further configured to:

[0287] Determine the working status of each burner according to the actual temperature value above each burner;

[0288] Determine the operating mode of the range hood based on the working status of all burners.

[0289] In one feasible solution, there are two burners on the stove top, and the temperature acquisition device is arranged on the range hood and is located at a position corresponding to the center of the line connecting the two burners.

[0290] In an implementable solution, when the acquisition viewing angle includes viewing angle opening, the working mode control module 4 is further configured to:

[0291] In different preset working scenarios, a temperature collection device is used to collect several groups of first historical data, each group of historical data includes a first historical temperature value under a set viewing angle opening;

[0292] Based on the plurality of sets of first historical data under each preset working scene, constructing a first preset temperature curve corresponding to the preset working scene;

[0293] Using a temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of actual data includes a first actual temperature value corresponding to an actual viewing angle;

[0294] Based on the plurality of sets of first actual data, generating a first actual temperature curve corresponding to the current scene;

[0295] The first actual temperature curve is compared with a different first preset temperature curve, and the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0296] In an implementable solution, when the acquisition viewing angle includes a deflection angle, the working mode control module 4 is further configured to:

[0297] Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle;

[0298] In different preset working scenarios, a temperature collection device is used to collect several groups of second historical data, each group of second historical data includes a second historical temperature value under a set deflection angle;

[0299] Based on the plurality of sets of second historical data under each preset working scene, constructing a second preset temperature curve corresponding to the preset working scene;

[0300] Using a temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of second actual data includes a second actual temperature value corresponding to an actual deflection angle;

[0301] generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of second actual data;

[0302] The second actual temperature curve is compared with a different second preset temperature curve, and the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

[0303] In one feasible solution, the working mode control module 4 is further configured to:

[0304] The closest edge of the temperature collection device toward the furnace head area is taken as the minimum deflection angle, and the farthest edge of the temperature collection device toward the furnace head area is taken as the maximum deflection angle. The actual deflection angle is increased in sequence, and the second actual temperature value corresponding to each actual deflection angle is collected;

[0305] Obtaining a maximum actual temperature value and a minimum actual temperature value based on the second actual temperature values ​​corresponding to the respective actual deflection angles;

[0306] Determine whether the difference between the maximum actual temperature value and the minimum actual temperature value is greater than a preset difference;

[0307] If yes, then executing the step of generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of second actual data;

[0308] If not, make sure the burner is in the off state and control the range hood to turn off.

[0309] In one feasible solution, the working mode control module 4 is further configured to:

[0310] Increasing the set deflection angle in sequence, and obtaining the second historical temperature value corresponding to each set deflection angle to obtain several sets of second historical data;

[0311] Based on the plurality of sets of second historical data, a second preset temperature curve is generated by fitting;

[0312] Increasing the actual deflection angle in sequence, and obtaining a second actual temperature value corresponding to each actual deflection angle to obtain several sets of second actual data;

[0313] Based on the plurality of sets of second actual data, a second actual temperature curve is generated by fitting;

[0314] The steps of comparing the second actual temperature curve with a different second preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene include:

[0315] Determine whether the second actual temperature curve conforms to a trend of first rising, then being stable in the middle, and finally falling;

[0316] If so, make sure there is cooking equipment on the burner.

[0317] In one feasible solution, the working mode control module 4 is further configured to:

[0318] Obtaining a deflection angle change value corresponding to a temperature plateau segment in a second actual temperature curve;

[0319] Determine whether the deflection angle change value is greater than a preset change value;

[0320] If so, determining that the size of the cooking device is larger than the preset size, and controlling the range hood to operate at the first power;

[0321] If not, determining that the size of the cooking device is smaller than or equal to the preset size, and controlling the range hood to operate at the second power;

[0322] The first power is greater than the second power.

[0323] In one feasible solution, the working mode control module 4 is further configured to:

[0324] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has four peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a high-fire state, and the operating power of the range hood is controlled to be reduced to the third power;

[0325] and / or,

[0326] When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has only two peaks, determining whether the second actual temperature curve meets the third preset condition and the fourth preset condition;

[0327] The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; the fourth preset condition is that the average value of the actual temperature values ​​at each actual deflection angle is less than the preset average value, or the drop value of the actual temperature value within a unit deflection angle is less than the preset drop value;

[0328] If so, determine that the burner is in the off state and control the range hood to be turned off.

[0329] In one feasible solution, Figure 16 As shown, the control system further includes a prompt information generating module 5, which is used to:

[0330] Before controlling the operating power of the range hood to be reduced to the third power, generating a first prompt message for reducing the burner power;

[0331] and / or,

[0332] When the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, a second prompt message for controlling the furnace head to be closed is generated.

[0333] In one feasible solution, the control system further includes:

[0334] A temperature change curve fitting module 6 is configured to obtain a temperature change curve of the actual temperature value at a fixed deflection angle within a second preset time when the second actual temperature curve does not have four peaks and does not have two peaks;

[0335] When the actual temperature value changes periodically within the second preset time, it is determined that the cooking device on the stove is in an overturning state, and the operating power of the range hood is controlled to increase to a fourth power.

[0336] Since the control system of the range hood provided in this embodiment is the same as the control method of the range hood provided in Example 1, they will not be described in detail here.

[0337] The control system of the range hood provided in this embodiment can obtain the temperature above the stove surface under different collection angles by arranging a temperature collection device with a variable viewing angle opening on the range hood and adjusting the deflection angle of the temperature collection device through the base, thereby matching the current actual working scene. At the same time, the temperature-time curve under a fixed viewing angle opening is used as a supplement to more accurately control the switching and gear switching of the range hood, thereby better adapting to the current cooking state, improving the effect of oil fume extraction, reducing the cost of the range hood, and enhancing the user's cooking experience.

[0338] Example 3

[0339] This embodiment provides a range hood, which is integrated with the control system of the range hood in Example 2.

[0340] The range hood provided in this embodiment has better product performance because it integrates the control system of the range hood in Example 2. It can more accurately control the switch and gear switching, thereby better adapting to the current cooking state, improving the effect of oil fume extraction, and enhancing the user's cooking experience.

[0341] Example 4

[0342] This embodiment provides an electronic device, Figure 17 The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the range hood control method of Example 1 is implemented. Figure 17 The electronic device 30 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0343] like Figure 17 As shown, the electronic device 30 may be a general-purpose computing device, such as a server device. Components of the electronic device 30 may include, but are not limited to, the at least one processor 31, the at least one memory 32, and a bus 33 connecting different system components (including the memory 32 and the processor 31).

[0344] The bus 33 includes a data bus, an address bus, and a control bus.

[0345] The memory 32 may include a volatile memory, such as a random access memory (RAM) 321 and / or a cache memory 322 , and may further include a read-only memory (ROM) 323 .

[0346] The memory 32 may also include a program / utility 325 having a set (at least one) of program modules 324, such program modules 324 including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0347] The processor 31 executes various functional applications and data processing by running computer programs stored in the memory 32, such as the control method of the range hood of Example 1 of the present disclosure.

[0348] The electronic device 30 may also communicate with one or more external devices 34 (e.g., a keyboard, a pointing device, etc.). Such communication may be performed via an input / output (I / O) interface 35. Furthermore, the model generating device 30 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 36. Figure 17As shown, the network adapter 36 communicates with the other modules of the model-generated device 30 via the bus 33. It should be understood that, although not shown in the figures, other hardware and / or software modules may be used in conjunction with the model-generated device 30, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, RAID (RAID) systems, tape drives, and data backup storage systems.

[0349] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0350] Example 5

[0351] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the range hood control method of embodiment 1 is implemented.

[0352] The readable storage medium may include, but is not limited to, a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0353] In a possible implementation manner, the present disclosure may also be implemented in the form of a program product, which includes program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the range hood control method of Example 1.

[0354] The program code for executing the present disclosure may be written in any combination of one or more programming languages, and may be executed entirely on the user device, partially on the user device, as a standalone software package, partially on the user device and partially on a remote device, or entirely on the remote device.

[0355] While specific embodiments of the present disclosure have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present disclosure is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present disclosure, and such changes and modifications are intended to fall within the scope of protection of the present disclosure.

Claims

1. A range hood control method, characterized in that: A temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood, and the temperature acquisition device is rotated and adjusted by a base with a variable deflection angle. The control method includes: Using the temperature acquisition device to acquire first temperature values ​​at different locations above the stove at different acquisition viewing angles to obtain first temperature distribution information above the stove; The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base; Based on the first temperature distribution information, selecting burner areas corresponding to a plurality of burners on the stove surface; For any burner in the burner area, the temperature acquisition device is used to acquire actual temperature values ​​above the burner at different acquisition viewing angles; determining an actual operating scenario of the range hood based on the different actual temperature values, and controlling the range hood to operate in an operating mode matching the actual operating scenario; When the acquisition viewing angle includes a viewing angle opening, the steps of determining the actual working scene of the range hood based on different actual temperature values ​​and controlling the range hood to operate in a working mode matching the actual working scene include: In different preset working scenarios, the temperature acquisition device is used to respectively acquire a plurality of groups of first historical data, each group of the first historical data including a first historical temperature value at a set viewing angle; Based on the plurality of sets of the first historical data under each of the preset working scenarios, constructing a first preset temperature curve corresponding to the preset working scenario; Using the temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of the first actual data includes a first actual temperature value corresponding to an actual viewing angle; generating a first actual temperature curve corresponding to the current scene based on the plurality of sets of the first actual data; comparing the first actual temperature curve with the different first preset temperature curves, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene; or, When the acquisition viewing angle includes a deflection angle, the steps of determining the actual working scene of the range hood based on different actual temperature values ​​and controlling the range hood to operate in a working mode matching the actual working scene include: Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle; In different preset working scenarios, the temperature collection device is used to collect several groups of second historical data, each group of the second historical data includes a second historical temperature value at a set deflection angle; Based on the plurality of sets of the second historical data under each of the preset working scenarios, construct a second preset temperature curve corresponding to the preset working scenario; Using the temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of the second actual data includes a second actual temperature value corresponding to an actual deflection angle; generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data; The second actual temperature curve is compared with the different second preset temperature curve, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

2. The range hood control method according to claim 1, wherein: The step of screening out burner areas corresponding to the burners on the stove surface based on the first temperature distribution information includes: Based on the first temperature distribution information, screening out the burner head area that meets the first preset condition; The first preset condition is used to indicate that there is a first continuous area on the stove surface where the first temperature value is higher than a first preset temperature value, and the first continuous area is the burner head area.

3. The range hood control method according to claim 1, wherein: The step of screening out burner areas corresponding to the burners on the stove surface based on the first temperature distribution information includes: Based on the first temperature distribution information, screening out a non-burner head area that meets a second preset condition; The second preset condition is used to indicate that there is a second continuous area on the stovetop where the first temperature value is lower than the second preset temperature value, and the second continuous area is a non-burner area; According to the non-burner head area, the remaining area on the cooktop is acquired and used as the burner head area corresponding to the plurality of burners.

4. The range hood control method according to claim 1, wherein: The control method further includes: determining the working status of each burner according to the actual temperature value above each burner; The operating mode of the range hood is determined based on the operating status of all the burners.

5. The range hood control method according to claim 1, wherein: There are two burners on the stove top, and the temperature collecting device is arranged on the range hood and is located at a position corresponding to the center of the line connecting the two burners.

6. The range hood control method according to claim 1, wherein: The step of using the temperature acquisition device to acquire a plurality of groups of second actual data corresponding to the current scene, each group of the second actual data including a second actual temperature value corresponding to an actual deflection angle, comprises: The closest edge of the temperature collection device toward the burner area is defined as the minimum deflection angle, and the farthest edge of the temperature collection device toward the burner area is defined as the maximum deflection angle. The actual deflection angles are sequentially increased, and the second actual temperature value corresponding to each actual deflection angle is collected. acquiring a maximum actual temperature value and a minimum actual temperature value based on the second actual temperature values ​​corresponding to the respective actual deflection angles; Determining whether a difference between the maximum actual temperature value and the minimum actual temperature value is greater than a preset difference; If yes, then executing the step of generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data; If not, it is determined that the burner is in an off state, and the range hood is controlled to be turned off.

7. The range hood control method according to claim 6, wherein: The control method further includes: Increasing the set deflection angle in sequence, and acquiring a second historical temperature value corresponding to each set deflection angle to obtain a plurality of sets of the second historical data; Based on the plurality of sets of the second historical data, fitting and generating the second preset temperature curve; Increasing the actual deflection angle in sequence, and acquiring a second actual temperature value corresponding to each actual deflection angle to obtain a plurality of sets of the second actual data; Based on the plurality of sets of the second actual data, fitting and generating the second actual temperature curve; The step of comparing the second actual temperature curve with the different second preset temperature curve, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene includes: Determining whether the second actual temperature curve conforms to a trend of first rising, being stable in the middle, and then falling; If so, it is determined that a cooking device is placed on the burner.

8. The range hood control method according to claim 7, wherein: After determining that a cooking device is placed on the burner, the control method further includes: Obtaining a deflection angle change value corresponding to a temperature plateau segment in the second actual temperature curve; Determining whether the deflection angle change value is greater than a preset change value; If so, determining that the size of the cooking device is larger than a preset size, and controlling the range hood to operate at a first power; If not, determining that the size of the cooking device is smaller than or equal to the preset size, and controlling the range hood to operate at a second power; The first power is greater than the second power.

9. The range hood control method according to claim 7, wherein: The control method further includes: When the second actual temperature curve does not conform to a trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has four peaks, it is determined that no cooking equipment is placed on the burner and the burner is in a high-fire state, and the operating power of the range hood is controlled to be reduced to a third power; and / or, When the second actual temperature curve does not conform to the trend of first rising, being stable in the middle, and then falling, and the second actual temperature curve has only two peaks, determining whether the second actual temperature curve meets the third preset condition and the fourth preset condition; The third preset condition is that the second actual temperature curve has four peaks or the duration of two peaks is greater than the first preset time; the fourth preset condition is that the average value of the second actual temperature value at each of the actual deflection angles is less than a preset average value, or the decrease value of the second actual temperature value within a unit deflection angle is less than a preset decrease value; If so, it is determined that the burner is in the off state, and the range hood is controlled to be turned off.

10. The range hood control method according to claim 9, wherein: The control method further includes: Before controlling the operating power of the range hood to be reduced to the third power, generating a first prompt message for reducing the fire power of the burner; and / or, When the second actual temperature curve meets the third preset condition and does not meet the fourth preset condition, a second prompt message for controlling the furnace head to be closed is generated.

11. The range hood control method according to claim 9, wherein: The control method further includes: When the second actual temperature curve does not have four peaks and does not have two peaks, obtaining a temperature change curve of the second actual temperature value within a second preset time at a fixed deflection angle; When the second actual temperature value changes periodically within the second preset time, it is determined that the cooking device on the burner is in an overturned state, and the operating power of the range hood is controlled to increase to a fourth power.

12. A range hood control system, characterized in that: A temperature acquisition device with a variable viewing angle is provided at a preset position of the range hood. The temperature acquisition device is rotated and adjusted by a base with a variable deflection angle. The control system includes: a temperature distribution acquisition module, configured to use the temperature acquisition device to acquire first temperature values ​​at different locations above the stove under different acquisition viewing angles, so as to obtain first temperature distribution information above the stove; The viewing angles of the different acquisition viewing angles are changed based on the adjustment of the temperature acquisition device; and / or the deflection angles of the different acquisition viewing angles are changed based on the adjustment of the base; a burner area determination module, configured to screen out burner areas corresponding to a plurality of burners on the stovetop based on the first temperature distribution information; an actual temperature acquisition module, configured to acquire, for any burner within the burner area, actual temperature values ​​above the burner at different acquisition viewing angles using the temperature acquisition device; an operating mode control module, configured to determine an actual operating scenario of the range hood based on different actual temperature values, and control the range hood to operate in an operating mode that matches the actual operating scenario; When the acquisition viewing angle includes a viewing angle opening, the working mode control module is further configured to: In different preset working scenarios, the temperature acquisition device is used to respectively acquire a plurality of groups of first historical data, each group of the first historical data including a first historical temperature value at a set viewing angle; Based on the plurality of sets of the first historical data under each of the preset working scenarios, constructing a first preset temperature curve corresponding to the preset working scenario; Using the temperature acquisition device to acquire several groups of first actual data corresponding to the current scene, each group of the first actual data includes a first actual temperature value corresponding to an actual viewing angle; generating a first actual temperature curve corresponding to the current scene based on the plurality of sets of the first actual data; comparing the first actual temperature curve with the different first preset temperature curves, determining the actual working scene to which the current scene belongs based on the comparison result, and controlling the range hood to operate in a working mode matching the actual working scene; or, When the acquisition viewing angle includes a deflection angle, the working mode control module is further configured to: Controlling the viewing angle of the temperature acquisition device to a fixed viewing angle; In different preset working scenarios, the temperature collection device is used to collect several groups of second historical data, each group of the second historical data includes a second historical temperature value at a set deflection angle; Based on the plurality of sets of the second historical data under each of the preset working scenarios, construct a second preset temperature curve corresponding to the preset working scenario; Using the temperature acquisition device to acquire several groups of second actual data corresponding to the current scene, each group of the second actual data includes a second actual temperature value corresponding to an actual deflection angle; generating a second actual temperature curve corresponding to the current scene based on the plurality of sets of the second actual data; The second actual temperature curve is compared with the different second preset temperature curve, the actual working scene to which the current scene belongs is determined based on the comparison result, and the range hood is controlled to operate in a working mode matching the actual working scene.

13. A range hood, characterized in that: The range hood includes the range hood control system according to claim 12.

14. An electronic device comprising a memory, a processor, and a computer program stored in the memory and configured to run on the processor, wherein: When the processor executes the computer program, the range hood control method according to any one of claims 1 to 11 is implemented.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the range hood control method according to any one of claims 1 to 11 is implemented.

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