Range hood control method and device and range hood

Abstract

The invention discloses a range hood control method and device and a range hood, and relates to the technical field of range hoods. The range hood comprises a color detection device and a temperature detection device, and the range hood control method comprises the steps that a color detection value, detected by the color detection device, of a target detection area is obtained, and a temperature detection value, detected by the temperature detection device, of the target detection area is obtained; and determining feature information of the target detection area based on the color detection value and the temperature detection value, and then controlling the range hood to execute corresponding actions according to the determined feature information of the target detection area. Thus, the color detection device and the temperature detection device are combined, the feature information that a human body exists in the target detection area, abnormal flames exist in the target detection area, a cooker is in an ignition state and a pot is in a use state can be accurately recognized, and corresponding control is conducted based on different feature information; the control requirements in different scenes can be met without manual control, and the intelligence of the range hood is improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco appliance technology, and in particular to a tobacco appliance control method and device, and a tobacco appliance. Background Technology

[0002] Gas stoves, induction cookers, ovens, and microwave ovens are indispensable cooking appliances. However, these appliances produce harmful gases during operation, posing a potential threat to the kitchen environment. To protect consumers' health, range hoods, as essential kitchen equipment, are responsible for promptly removing these harmful gases generated during cooking, creating a healthy kitchen environment.

[0003] Existing range hoods typically rely on manual operation to adjust fan speed, switch lights on / off, and change operating modes, resulting in a low level of intelligence. Furthermore, manual operation is not only cumbersome but also fails to meet the control needs of different scenarios. Summary of the Invention

[0004] The main objective of this invention is to provide a method and device for controlling a range hood, and a range hood in order to improve the intelligence of the range hood.

[0005] To achieve the above objectives, the present invention proposes a method for controlling a range hood, wherein the range hood includes a color detection device and a temperature detection device, and the method includes:

[0006] Obtain the color detection value of the target detection area detected by the color detection device, and obtain the temperature detection value of the target detection area detected by the temperature detection device;

[0007] The feature information of the target detection area is determined based on the color detection value and the temperature detection value;

[0008] The smoke machine is controlled to perform corresponding actions based on the feature information of the determined target detection area.

[0009] In one embodiment, the feature information of the target detection region includes one or more of the following:

[0010] The target detection area contains a human body; the target detection area contains an abnormal flame; the stove is in the ignition state and the pot is in use; the stove is in the ignition state and the pot is not in use.

[0011] And / or, controlling the smoke machine to perform corresponding actions includes one or more of the following: controlling the first light fixture on the smoke machine to work and / or controlling the light fixtures in the same environment as the smoke machine to work, controlling the fan speed of the smoke machine, and controlling the alarm device to work.

[0012] In one embodiment, the step of determining the feature information of the target detection region based on the color detection value and the temperature detection value includes:

[0013] Determine the amount of color change between the color reference value and the color detection value, and the amount of temperature change between the temperature reference value and the temperature detection value;

[0014] The feature information of the target detection area is determined based on the color change and the temperature change.

[0015] In one embodiment, the step of determining the feature information of the target detection region based on the color change and the temperature change includes:

[0016] When the color change is within a first preset color range and the temperature change is within a first preset temperature range, the feature information of the target detection area is determined to indicate that a human body exists in the target detection area.

[0017] In one embodiment, the smoke hood includes a first lamp, and the step of controlling the smoke hood to perform corresponding actions based on the feature information of the determined target detection area includes:

[0018] When the feature information of the target detection area indicates the presence of a human body in the target detection area, and the color detection value is lower than a preset first color detection value, the first lamp is controlled to work.

[0019] In one embodiment, the smoke machine includes a wireless communication device, and the step of controlling the smoke machine to perform corresponding actions based on the current feature information of the determined target detection area includes:

[0020] When the feature information of the target detection area indicates the presence of a human body in the target detection area, and the color detection value is lower than a preset first color detection value, the wireless communication device is controlled to output a control signal to control at least one lamp that is in the same environment as the smoke machine to work.

[0021] In one embodiment, the range hood and the cooktop are correspondingly arranged, and the cooktop can be used with cookware; the step of determining the feature information of the target detection area based on the color change and the temperature change includes:

[0022] When the color change is within a second preset color range and the temperature change is within a second preset temperature range, the feature information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the use state.

[0023] In one embodiment, the smoke machine includes a fan, and the step of controlling the smoke machine to perform corresponding actions based on the feature information of the determined target detection area includes:

[0024] When the characteristic information of the target detection area is that the stove is in the ignition state and the pot is in the use state, the smoke concentration of the target detection area is determined based on the color detection value and the temperature detection value.

[0025] The cooking mode is determined based on the temperature detection value and the smoke concentration.

[0026] According to the cooking mode, the fan is controlled to operate at the corresponding speed.

[0027] In one embodiment, the step of determining the feature information of the target detection region based on the color change and the temperature change further includes:

[0028] When the color change is within a second preset color change range and the temperature change is within a third preset temperature change range, the characteristic information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the unused state.

[0029] In one embodiment, the step of determining the feature information of the target detection region based on the color change and the temperature change includes:

[0030] When the color change is greater than a preset color threshold and the temperature change is greater than a preset temperature threshold, the feature information of the target detection area is determined to be that there is an abnormal flame in the target detection area.

[0031] In one embodiment, the smoke hood includes an alarm device; the step of controlling the smoke hood to perform corresponding actions based on the current feature information of the determined target detection area includes:

[0032] When the characteristic information of the target detection area indicates that the stove is in the ignition state and the pot is in the unused state for a preset time, or when the characteristic information of the target detection area indicates that there is an abnormal flame in the target detection area, the alarm device is controlled to work to alert the user.

[0033] In one embodiment, the color reference value is a pre-stored color reference value, and / or, the temperature reference value is a pre-stored temperature reference value.

[0034] In one embodiment, the method further includes:

[0035] Based on the color detection device, multiple light intensity values ​​of the target detection area and the corresponding color detection value for each light intensity value are obtained within a first preset time period;

[0036] The rate of change of light intensity within a first preset time period is determined based on multiple light intensity values;

[0037] When the light intensity change rate is less than the preset light intensity change rate, the last acquired color detection value is used as the color reference value of the target detection area.

[0038] In one embodiment, the method further includes:

[0039] Obtain the light intensity value of the target detection area;

[0040] The color reference value is determined based on the light intensity value of the target detection area and the correspondence between the preset light intensity value and the color reference value.

[0041] In one embodiment, the method further includes:

[0042] Obtain multiple temperature detection values ​​of the target detection area within a second preset time period;

[0043] The rate of temperature change within a second preset time period is determined based on multiple temperature detection values;

[0044] When the temperature change rate is less than the preset temperature change rate, the last acquired temperature detection value is used as the temperature reference value of the target detection area.

[0045] Furthermore, to achieve the above objectives, the present invention also proposes a smoke hood control device, the smoke hood control device comprising: a memory, a processor, and a smoke hood control program stored in the memory and executable on the processor, the smoke hood control program being configured to implement the steps of the smoke hood control method.

[0046] In addition, to achieve the above objectives, the present invention also proposes a range hood, which includes a range hood body, a color detection device, and a temperature detection device. The color detection device and the temperature detection device are respectively disposed in the range hood body. The range hood uses the range hood control method described above, or the range hood further includes the range hood control device described above.

[0047] In one embodiment, the range hood further includes:

[0048] A first lamp is installed on the main body of the range hood;

[0049] Alternatively, a wireless communication device may be used to output control signals to control at least one light fixture that is in the same environment as the smoke machine.

[0050] In one embodiment, the range hood further includes a fan, which operates at a corresponding speed according to the cooking mode determined by the range hood control device or the range hood control program.

[0051] In one embodiment, the range hood further includes an alarm device, which is used to alert the user when the characteristic information of the target detection area indicates that the stove is in the ignition state and the pot is in the unused state for a preset time, or when the characteristic information of the target detection area indicates that there is an abnormal flame in the target detection area.

[0052] The range hood proposed in this invention includes a color detection device and a temperature detection device. Its control method acquires the color detection value of the target detection area detected by the color detection device and the temperature detection value of the target detection area detected by the temperature detection device. Based on the color and temperature detection values, it determines the feature information of the target detection area and then controls the range hood to perform corresponding actions according to the determined feature information. Thus, by combining the color and temperature detection devices, this invention can accurately identify feature information such as the presence of a human body in the target detection area, the presence of an abnormal flame in the target detection area, the stove being ignited and the cookware being used, and the stove being ignited and the cookware being unused. Based on different feature information, it performs corresponding control, meeting the control needs of different scenarios without human intervention, thereby improving the intelligence of the range hood. Attached Figure Description

[0053] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0054] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0055] Figure 1 This is a flowchart illustrating an embodiment of the smoke machine control method of the present invention;

[0056] Figure 2 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0057] Figure 3 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0058] Figure 4 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0059] Figure 5 A flowchart is provided for another embodiment of the smoke machine control method of the present invention;

[0060] Figure 6 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0061] Figure 7 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0062] Figure 8 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0063] Figure 9 A flowchart is provided for another embodiment of the smoke machine control method of the present invention;

[0064] Figure 10 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0065] Figure 11 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0066] Figure 12 This is a flowchart illustrating another embodiment of the smoke machine control method of the present invention;

[0067] Figure 13 A flowchart is provided for another embodiment of the smoke machine control method of the present invention;

[0068] Figure 14 This is a schematic diagram of the structure of a range hood provided in an embodiment of the present invention;

[0069] Figure 15 This is a circuit diagram of an embodiment of the smoke machine control device of the present invention.

[0070] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0071] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0072] Gas stoves, induction cookers, ovens, and microwave ovens are indispensable cooking appliances. However, these appliances produce fumes during operation, which generally contain harmful gases, posing a potential threat to the kitchen environment. To protect consumers' health, range hoods, as an important piece of kitchen equipment, are responsible for promptly removing harmful gases generated during cooking, creating a healthy kitchen environment.

[0073] Existing range hoods typically rely on manual operation to adjust fan speed, switch lights on / off, and change operating modes, resulting in a low level of intelligence. Furthermore, manual operation is not only cumbersome but also fails to meet the control needs of different scenarios.

[0074] Based on this, embodiments of the present invention provide a method for controlling a range hood.

[0075] refer to Figure 14 The present invention's range hood includes a color detection device 20 and a temperature detection device 30. The color detection device 20 can be a color sensor or a camera, or other device with color detection capabilities. The color sensor has three color channels: red, green, and blue. Each channel's photodiode is sensitive only to light within the wavelength range corresponding to red, green, or blue light. This allows the color detection device 20 to determine the intensity of red, green, and blue light in a given area after receiving light, and then calculate the intensity ratio of the three color channels to determine the color of that area and its changes. The camera can also obtain the color of the target area and its changes by capturing image or video information of the target area and processing and analyzing it. Of course, the color detection device 20 can also use other devices capable of detecting color changes; the specific choice can be determined according to actual needs and scenarios. The temperature detection device 30 can be a temperature sensor, infrared sensor, thermal imager, or other device with temperature detection capabilities. The temperature sensor can sense the temperature changes of the target detection area in real time and transmit the temperature detection value to the range hood's control system for corresponding control operations.

[0076] It's important to note that in a kitchen with a gas stove, the range hood is typically installed above or around the stove to quickly extract and vent cooking fumes outdoors. Conversely, other portable cooking appliances, such as induction cookers, ovens, and microwaves, are usually moved to a position below or near the range hood to ensure timely removal of fumes generated during their operation. In smaller kitchens, fumes from anywhere can be extracted and vented outdoors by the range hood. Therefore, monitoring the range hood is an effective way to understand the kitchen's operating conditions.

[0077] refer to Figure 1 The smoke hood control method proposed in this invention includes steps S100 to S300:

[0078] Step S100: Obtain the color detection value of the target detection area detected by the color detection device 20, and obtain the temperature detection value of the target detection area detected by the temperature detection device 30.

[0079] It should be noted that the target detection area can be a certain area including the area below or around the range hood. The color detection device 20 and the temperature detection device 30 are respectively set corresponding to the target detection area to detect the color, temperature, and changes in color and temperature of the target detection area. By changing the number and position of the color detection device 20 and the temperature detection device 30, the position and size of the area they detect (i.e., the target detection area) can be adjusted accordingly to adapt to different kitchen environments and cooking equipment layouts. Therefore, in this embodiment, the specific number and position of the color detection device 20 and the temperature detection device 30 are not limited, as long as they can detect the color, temperature, and changes in color and temperature of the target detection area in real time.

[0080] In this embodiment, the color detection value is the color value of the target detection area detected in real time by the color detection device 20. The color detection value includes the intensity values ​​of red, green, and blue (RGB) or color information (such as hue, saturation, brightness, etc.) calculated from these three color intensity values. The temperature detection value is the temperature value of the target detection area acquired in real time by the temperature detection device 30, which directly reflects the temperature of the target detection area. The color detection value and the temperature detection value can provide data support for subsequently determining the feature information of the target detection area.

[0081] Step S200: Determine the feature information of the target detection area based on the color detection value and the temperature detection value.

[0082] In this embodiment, the feature information of the target detection area includes at least one or more of the following: the target detection area contains a human body, the target detection area contains an abnormal flame, the stove corresponding to the range hood is in ignition and the cookware that can be used with the stove is in use, and the stove corresponding to the range hood is in ignition and the cookware that can be used with the stove is in unused state.

[0083] In this embodiment, feature information can be extracted and judged based on color detection values ​​and temperature detection values ​​using a preset algorithm or model. It should be noted that the temperature in a kitchen is generally relatively constant before use. If a person enters the corresponding detection area, it will affect the original ambient temperature. The temperature sensor can detect the presence of a person by detecting such temperature fluctuations or by detecting a temperature within the range corresponding to the human body. Similarly, the color detection device can judge based on changes in color detection values ​​or the color falling within a specific color value range. Color detection values ​​can be represented by RGB values. This embodiment combines temperature detection values ​​and color detection values ​​for comprehensive judgment, accurately detecting the entry of a person and providing a basis for subsequent control strategies.

[0084] For example, if the color detection value of the target detection area detected by the color detection device 20 is reduced due to occlusion and reaches a specific color range, and the temperature detection value detected by the temperature detection device 30 rises and reaches a specific temperature range, then the characteristic information of the target detection area can be determined as the presence of a human body in the target detection area. This specific temperature range can be a temperature range near the human body temperature range, such as between 35°C and 40°C, while the specific color range corresponds to the color appearance of human clothing or skin in the detection device, or it may indicate a change in the current color detection value, generally suggesting that someone has entered and covered the area originally covered by the color detection device 20, causing the color detection value to change. The color detection value can be represented by RGB values.

[0085] For example, when the color detection device 20 detects a specific cookware color (such as stainless steel or iron) in the target detection area, and the temperature detection device 30 detects a stable temperature within a certain range during cooking, combined with the flame color detected in the color detection value, it can be determined that the characteristic information of the target detection area indicates that the stove corresponding to the range hood is in ignition mode and the cookware that can be used with the stove is in use. At this time, the range hood can automatically adjust to an appropriate suction power to ensure that the smoke generated during cooking can be discharged in a timely manner.

[0086] Similarly, if the color detection device 20 detects a specific cookware color in the target detection area, but the temperature detection device 30 detects a temperature that remains at a high level for an extended period, such as exceeding a preset cooking temperature threshold, and the flame color in the color detection value is not obvious or unstable, then it can be determined that the characteristic information of the target detection area indicates that the stove corresponding to the range hood is in an ignition state, but the cookware that can be used with the stove is not in use. In this case, it may be that the cookware is being burned dry or the stove was left on. The range hood can automatically issue an alarm or adjust to a higher suction power through the control system to remind the user and eliminate potential safety hazards as soon as possible.

[0087] Similarly, when the color detection device 20 detects that the color detection value of the target detection area exceeds a preset color threshold, and the temperature detection device 30 detects that the temperature detection value of the target detection area exceeds a preset temperature threshold, it can be determined that the characteristic information of the target detection area indicates the presence of an abnormal flame. The R, G, and B values ​​of this preset color threshold can be (255, 100, 0) or (255, 80, 0) or similar color values. Specifically, the preset temperature threshold can be the upper limit of the temperature of the flame or heat source generated by the cooking equipment under normal operating conditions, such as 1000°C or 1200°C. For different cooking equipment, such as induction cookers, ovens, and microwave ovens, the upper limit of the heat source temperature may vary, and the specific value needs to be determined based on the characteristics and operating conditions of the equipment. Furthermore, based on the specific color and temperature characteristics of the cookware and stove, the usage status of the cookware and stove can also be judged comprehensively through the color detection value and temperature detection value.

[0088] In this way, by combining color detection values ​​and temperature detection values, the characteristic information of the target detection area can be accurately obtained, providing support for subsequent intelligent control of the range hood.

[0089] Step S300: Control the smoke machine to perform corresponding operations based on the feature information.

[0090] In this embodiment, the range hood can perform various operations corresponding to different feature information to meet the control needs of different scenarios. For example, when it is determined that a human body is present in the target detection area, the range hood can adjust the fan speed to a lower level to avoid excessive wind force causing discomfort to the human body. At the same time, it can control the first light fixture 40 on the range hood to work and / or control the lights in the same environment to turn on the lighting function, providing sufficient light for the human body to operate during the cooking process. In addition, the user experience can be further optimized according to the human body's activities in the kitchen. For example, when a human body moves frequently in the kitchen, the range hood can intelligently adjust its airflow direction and speed to ensure timely removal of fumes while avoiding unnecessary interference to the human body. Furthermore, the range hood can automatically switch to energy-saving mode according to the human body's activities to reduce unnecessary energy consumption. For example, when a human body stays in the kitchen for a long time and its activities are relatively stable, the range hood can automatically reduce the exhaust fan speed and adjust the lighting to a comfortable brightness to reduce energy waste and create a more comfortable cooking environment for the user.

[0091] When the detection area is identified as containing abnormal flames, the range hood's maximum exhaust function can be immediately activated to quickly remove any smoke and harmful gases. Simultaneously, the alarm device 50 will activate to alert the user to fire safety. Furthermore, the range hood can be linked with other kitchen safety equipment (such as smoke detectors and fire extinguishers) to rapidly control the spread of fire, minimizing potential losses and ensuring fire safety in the kitchen. In addition, the range hood can record and upload detailed information such as the time, location, and size of the abnormal flames, providing valuable information for subsequent fire investigations.

[0092] When the target detection area indicates that the stove corresponding to the range hood is ignited and the cookware that can be used with the stove is unused, the range hood fan speed can be reduced to decrease the exhaust volume and avoid unnecessary energy waste. Simultaneously, the alarm device 50 is activated to remind the user that the cookware is unused, preventing dry burning. If the characteristic information indicates that the stove corresponding to the range hood is ignited and the cookware is in use, the range hood can automatically control the fan speed according to cooking needs (e.g., cookware size and type of food being cooked), ensuring that cooking fumes are promptly exhausted.

[0093] Understandably, in addition to the examples above, the range hood can also perform other operations based on the feature information of the target detection area, such as automatically switching working modes, adjusting lighting brightness, and regulating noise levels. All of these operations can be implemented through preset algorithms or models to improve the range hood's intelligence and user experience.

[0094] In this embodiment, the range hood proposed in this invention includes a color detection device 20 and a temperature detection device 30. Its control method acquires the color detection value of the target detection area detected by the color detection device 20 and the temperature detection value of the target detection area detected by the temperature detection device 30. Based on the color and temperature detection values, it determines the feature information of the target detection area and then controls the range hood to perform corresponding actions according to the determined feature information. Thus, by combining the color detection device 20 and the temperature detection device 30, this invention can accurately identify feature information such as the presence of a human body in the target detection area, the presence of an abnormal flame in the target detection area, the stove being ignited and the cookware being used, and the stove being ignited and the cookware being unused. Based on different feature information, it performs corresponding control, meeting the control needs of different scenarios without human intervention, thereby improving the intelligence of the range hood.

[0095] In one feasible implementation, refer to Figure 2 Step S200 includes steps S210 to S220, wherein:

[0096] Step S210: Determine the amount of color change between the color reference value and the color detection value, and the amount of temperature change between the temperature reference value and the temperature detection value.

[0097] In this embodiment, the color reference value can be a preset color reference value, or a color reference value transmitted by a terminal device connected to the range hood, or a reference value corresponding to the current light intensity value. This color reference value is used for subsequent comparison with the color detection value to obtain the amount of color change. The temperature reference value can be a preset temperature reference value, or a temperature reference value transmitted by a terminal device connected to the range hood, or a reference value corresponding to the current kitchen environment. This temperature reference value is used for subsequent comparison with the temperature detection value to obtain the amount of temperature change. Specifically, the amount of color change in the target detection area can be obtained by calculating the difference or ratio between the color reference value and the color detection value, and the amount of temperature change can be determined by calculating the difference or ratio between the temperature reference value and the temperature detection value. The magnitude of the color change and temperature change can reflect the color and temperature changes in the target detection area, thereby providing a basis for subsequent feature information judgment.

[0098] In one possible implementation, the color reference value is a pre-stored color reference value, and / or, the temperature reference value is a pre-stored temperature reference value.

[0099] In this embodiment, the color and temperature reference values ​​can be obtained from models trained on a large amount of experimental and historical data; alternatively, they can be fixed values ​​defined by the user. Furthermore, these color and temperature reference values ​​can be dynamically adjusted in real time according to changes in the kitchen environment and cooking conditions. For example, in a kitchen environment, as cooking time increases, the temperature around the stove gradually rises. At this time, the temperature reference value can be dynamically adjusted according to the actual temperature changes to more accurately reflect the temperature state of the target detection area.

[0100] In one feasible implementation, refer to Figure 11 The method further includes steps S410 to S430, wherein:

[0101] Step S410: Based on the color detection device 20, multiple light intensity values ​​of the target detection area and the color detection value corresponding to each light intensity value are obtained within a first preset time period.

[0102] It is understandable that the light intensity and color of the target detection area will also be affected by various factors such as weather changes and lighting conditions (sunlight intensity, sun angle), etc. If the same color reference value is used to determine the amount of color change under different weather and lighting conditions, it may lead to inaccurate results in the subsequent determination of feature information.

[0103] In this embodiment, the first preset time period can be set to a certain period of time before the smoke machine starts working. During this time period, multiple light intensity values ​​of the target detection area and the corresponding color detection value of each light intensity value are obtained by the color detection device 20, or by the color detection device 20 and the light sensor.

[0104] Step S420: Determine the rate of change of light intensity within a first preset time period based on the multiple light intensity values.

[0105] In this embodiment, after obtaining multiple light intensity values ​​within a first preset time period, the rate of change among these multiple light intensity values, i.e., the light intensity change rate, can be calculated. Specifically, the light intensity change rate can be obtained by calculating the ratio of the difference between two adjacent light intensity values ​​to the previous light intensity value, and then taking the average. The light intensity change rate reflects the change in light intensity in the target detection area within the first preset time period.

[0106] Step S430: When the light intensity change rate is less than the preset light intensity change rate, the last acquired color detection value is used as the color reference value of the target detection area.

[0107] In this embodiment, after determining the light intensity change rate within a first preset time period, it is compared with a preset light intensity change rate. If the light intensity change rate is less than the preset light intensity change rate, it is determined that the light intensity change within that time period is caused by the influence of natural environmental factors such as weather changes and changes in lighting conditions (solar intensity, solar angle), and the target detection area is under relatively stable lighting conditions. At this time, the last acquired color detection value is used as the color reference value for the target detection area, allowing the color reference value to adaptively adjust with changes in the natural environment. This eliminates the problem of inaccurate color reference values ​​due to environmental changes, thereby improving the accuracy and reliability of subsequently determined feature information. It should be noted that the preset light intensity change rate can be set according to the actual application scenario and the performance parameters of the color detection device 20 to ensure the accuracy and reliability of the color reference value.

[0108] Understandably, when the rate of change of light intensity is not less than the preset rate of change of light intensity, the lighting conditions in the target detection area are not stable. In this case, the light intensity in the target detection area may be affected by factors other than changes in the natural environment, such as users passing by and obstructing the target detection area, or the external light source in the space where the range hood is located being turned on or off. If the color detection value of the target detection area affected by factors other than changes in the natural environment is directly used as the color reference value, it will also lead to inaccurate color reference values, thus affecting the accuracy of the subsequently determined feature information.

[0109] In one feasible implementation, when the rate of change of light intensity is not less than a preset rate of change of light intensity, the stability of the light intensity value after the change is judged. If the light intensity value stabilizes after the change, the color reference value can be re-determined. Specifically, a second preset time period can be set after the first preset time period, and the light intensity value of the target detection area can be monitored in real time. If, within the second preset time period, the rate of change of the light intensity value of the target detection area is close to the change caused by the influence of the natural environment, it indicates that the light intensity value has stabilized. At this time, the color reference value can be obtained again according to the above steps. This ensures that an accurate color reference value is obtained under stable lighting conditions, thereby improving the accuracy of the subsequently determined feature information.

[0110] In one feasible implementation, if the light intensity value remains unstable after a change, the color reference value is maintained as the color reference value before the change corresponding to the rate of change in light intensity occurred. The rate of change in light intensity continues to be monitored until the light intensity value stabilizes, at which point the color reference value is redefined. This avoids inaccurate color reference values ​​caused by factors other than changes in the natural environment affecting the light intensity of the target detection area, such as user obstruction of the target detection zone or the turning on or off of external light sources in the space where the range hood is located. This ensures the reliability of the subsequently determined feature information.

[0111] In one feasible implementation, refer to Figure 12 The method further includes steps S510 to S520, wherein:

[0112] Step S510: Obtain the light intensity value of the target detection area.

[0113] In this embodiment, the light intensity value of the target detection area can be obtained through devices such as the color detection device 20 and the light sensor. The light intensity value reflects the illumination intensity of the target detection area and is an important basis for judging whether the illumination conditions of the target detection area are stable.

[0114] Step S520: Determine the color reference value based on the light intensity value of the target detection area and the preset correspondence between the light intensity value and the color reference value.

[0115] In this embodiment, the preset correspondence between light intensity values ​​and color reference values ​​can be a fixed correspondence based on experimental data, historical data, or user-defined settings, or it can be a dynamically adjusted correspondence based on actual conditions. Establishing this correspondence helps us quickly and accurately determine the color reference value based on the light intensity value of the target detection area, thereby improving the efficiency and accuracy of smoke concentration detection.

[0116] In one feasible implementation, multiple sets of correspondences between light intensity values ​​and color reference values ​​can be preset according to different lighting conditions in the target detection area. When the light intensity value of the target detection area changes, the system can find the corresponding color reference value in the preset correspondence based on the current light intensity value. If the current light intensity value is not in the preset correspondence, the system can interpolate or fit based on the most recent light intensity value and color reference value to obtain the color reference value corresponding to the current light intensity value.

[0117] It is understood that in this embodiment, the correspondence between the preset light intensity value and the color reference value can also be dynamically adjusted according to the actual application scenario and the performance parameters of the color detection device 20. For example, in a kitchen environment, as cooking time increases, the temperature around the stove gradually rises, and the lighting conditions may also change. At this time, the system can dynamically adjust the correspondence between the light intensity value and the color reference value according to the actual lighting conditions and temperature, so as to more accurately reflect the lighting conditions of the target detection area. By dynamically adjusting the correspondence between the light intensity value and the color reference value, it can be ensured that the range hood can better cope with sudden situations, such as sudden changes in lighting or equipment failure, and ensure the stability of subsequent feature information determination.

[0118] In one feasible implementation, refer to Figure 13 The smoke hood control method further includes steps S610 to S630, wherein:

[0119] Step S610: Obtain multiple temperature detection values ​​of the target detection area within the second preset time period.

[0120] It is understandable that the temperature of the target detection area will also be affected by its natural environment, such as weather changes, changes in lighting conditions (sunlight intensity, sunlight angle), and other factors. If the same temperature reference value is used to determine the amount of color change under different weather and lighting conditions, it may lead to inaccurate results in the subsequent determination of feature information.

[0121] In this embodiment, the second preset time period can be set to a certain period of time before the range hood starts working. During this time period, multiple temperature detection values ​​of the target detection area are obtained by the temperature detection device 30.

[0122] Step S620: Determine the rate of temperature change within the second preset time period based on the multiple temperature detection values.

[0123] In this embodiment, after obtaining multiple temperature detection values ​​within a second preset time period, the rate of change among these temperature detection values, i.e., the temperature change rate, can be calculated. Specifically, the temperature change rate can be obtained by calculating the ratio of the difference between two adjacent temperature detection values ​​to the previous temperature detection value, and then taking the average. The temperature change rate reflects the change in temperature detection values ​​of the target detection area within a first preset time period.

[0124] Step S630: When the temperature change rate is less than the preset temperature change rate, the last acquired temperature detection value is used as the temperature reference value of the target detection area.

[0125] In this embodiment, after determining the temperature change rate within the second preset time period, it is compared with a preset temperature change rate. If the temperature change rate is less than the preset temperature change rate, it is determined that the temperature change during that time period is caused by the influence of natural environmental factors such as weather changes and changes in lighting conditions (solar intensity, solar angle), and the target detection area is under relatively stable temperature conditions. At this time, the last acquired temperature detection value is used as the temperature reference value for the target detection area, allowing the temperature reference value to adaptively adjust with changes in the natural environment. This eliminates the problem of inaccurate temperature reference values ​​due to environmental changes, thereby improving the accuracy and reliability of the subsequently determined feature information. It should be noted that the preset temperature change rate can be set according to the actual application scenario and the performance parameters of the color detection device 20 to ensure the accuracy and reliability of the temperature reference value.

[0126] Understandably, when the temperature change rate is not less than the preset temperature change rate, the lighting conditions in the target detection area are not stable. At this time, the temperature of the target detection area may be affected by factors other than changes in the natural environment, such as the impact of a user passing by on the target detection area. In this case, if the temperature detection value of the target detection area affected by factors other than changes in the natural environment is directly used as the color reference value, it will also lead to inaccurate temperature reference values, thereby affecting the accuracy of the subsequently determined feature information.

[0127] Step S220: Determine the feature information of the target detection area based on the color change and the temperature change.

[0128] In this embodiment, a preset algorithm or model can be used to determine whether the target detection area contains human body, abnormal flame, stove is in ignition and pot is in use, or stove is in ignition and pot is not in use.

[0129] In one feasible implementation, refer to Figure 3 Step S220 includes step S221A, where when the color change is within a first preset color range and the temperature change is within a first preset temperature range, the feature information of the target detection area is determined to indicate that a human body exists in the target detection area.

[0130] In this embodiment, the first preset color range and the first preset temperature range can be based on historical data, experimental data, or user-defined data to describe the range of color and temperature changes that may occur when a human body appears in the target detection area. For example, the specific temperature range can be a temperature range near the human body temperature range, such as between 35°C and 40°C, while the specific color range corresponds to the color appearance of human clothing or skin in the detection device, or the detection of a change in the current color detection value. This generally indicates that someone has entered and covered the area originally covered by the color detection device 20, causing a change in the color detection value. The color detection value can be represented by RGB values. When the color change detected by the color detection device 20 falls within the first preset color range, and the temperature change detected by the temperature detection device 30 also falls within the first preset temperature range, it can be determined that a human body exists in the target detection area.

[0131] When a human body is detected within the target detection area, a series of preset control operations can be executed immediately to ensure the effective operation of the range hood and the user's comfort. For example, the range hood can automatically adjust its fan speed to better absorb and expel cooking fumes generated in the kitchen. Through intelligent algorithms, the system can dynamically adjust the fan speed based on the location and activity of the human body, as well as the status of the cooking equipment, achieving precise control. This ensures effective fume extraction while avoiding unnecessary energy consumption and noise.

[0132] Secondly, the range hood can intelligently determine whether to activate or adjust its lighting system based on the time a person spends in the target detection area and their activity level. For example, during cooking, if the user stays in the target detection area for a long time and moves around frequently, the system can automatically adjust the brightness and angle of the lighting to ensure that the user can clearly see the cooking equipment and ingredients, improving the convenience and safety of cooking.

[0133] In one possible implementation, the smoke hood includes a first light fixture 40. (See reference...) Figure 4Step S300 includes step S310A, where the first lamp 40 is controlled to work when the feature information of the target detection area indicates that a human body exists in the target detection area and the color detection value is lower than a preset first color detection value.

[0134] Understandably, the preset first color detection value can be set according to actual needs. It only represents a threshold of light intensity that the color detection device 20 can detect. When the color detection value is lower than this threshold, it means that the current ambient light is dark and additional lighting equipment is needed to provide light.

[0135] In this embodiment, when the feature information of the target detection area is determined to indicate the presence of a human body, and the color detection value is lower than a preset first color detection value, it indicates that the current ambient light may be insufficient, which will affect the user's vision and operation in that area. Therefore, controlling the first lamp 40 to operate, turning it on or increasing its brightness can effectively improve the lighting conditions and provide the user with a better user experience.

[0136] In one feasible embodiment, the range hood includes a wireless communication device that is communicatively connected to one or more light fixtures located in the same environment as the range hood. (Reference) Figure 5 Step S300 includes step S310B, where when the feature information of the target detection area indicates the presence of a human body in the target detection area and the color detection value is lower than a preset first color detection value, the wireless communication device is controlled to output a control signal to control at least one lamp that is in the same environment as the smoke machine to work.

[0137] In this embodiment, the lighting fixtures in the same environment as the range hood can be other lighting equipment in the kitchen, such as chandeliers and wall lamps. These lighting fixtures are connected to the range hood via a wireless communication device, enabling real-time information interaction and control. When the feature information of the target detection area is determined to indicate the presence of a human body, and the color detection value is lower than a preset first color detection value, the wireless communication device outputs a control signal to control at least one lighting fixture in the same environment as the range hood. Thus, in addition to the lighting equipment built into the range hood, other lighting fixtures can be controlled to further improve the lighting situation, providing users with a more comprehensive and uniform lighting effect. The wireless communication device in this embodiment can use existing wireless communication technologies, such as Bluetooth, Wi-Fi, and ZigBee, to achieve communication connection and control with external lighting fixtures. Simultaneously, to ensure the stability and reliability of communication, appropriate communication protocols and encryption technologies can be used to ensure the accurate transmission and reception of control signals.

[0138] In one feasible implementation, the range hood and the cooktop are correspondingly arranged, and the cooktop can be used with cookware. (Reference) Figure 6Step S220 includes step S221B, where when the color change is within a second preset color range and the temperature change is within a second preset temperature range, the feature information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the use state.

[0139] In this embodiment, the second preset color range and the second preset temperature range can also be based on historical data, experimental data, or user-defined data to describe the range of color and temperature changes that may occur in the target detection area when the stove is ignited and the cookware is in use. For example, the second temperature range corresponds to the combustion temperature of the flame, such as between 300°C and 500°C, or between 350°C and 600°C, while the second color range corresponds to the color appearance of the flame in the detection device, such as the color detection value between orange-red and yellow. When the color change detected by the color detection device 20 falls within the second preset color range, and the temperature change detected by the temperature detection device 30 also falls within the second preset temperature range, it can be determined that the stove is ignited and the cookware is in use. Thus, the range hood can adjust its operating state based on this determination, such as increasing the exhaust volume to more effectively remove fumes, or adjusting the airflow angle to ensure that fumes are effectively absorbed, thereby improving the comfort and safety of the cooking environment.

[0140] In one possible implementation, the smoke hood includes a fan. (See reference) Figure 7 Step S300 includes steps S310C1 to S310C3, wherein:

[0141] Step S310C1: When the characteristic information of the target detection area is that the stove is in the ignition state and the pot is in the use state, the smoke concentration of the target detection area is determined based on the color detection value and the temperature detection value.

[0142] In this embodiment, smoke is generated in the kitchen when the stove is ignited and the cookware is in use. It is understood that color detection values ​​typically reflect the degree of light scattering in the smoke, while temperature detection values ​​indirectly reflect the heat generated by the smoke. Therefore, by setting a smoke concentration calculation model based on color and temperature detection values, we can assess the smoke concentration in the target detection area in real time and adjust the range hood's operating status accordingly.

[0143] Step S310C2: Determine the cooking mode based on the temperature detection value and the smoke concentration.

[0144] In this embodiment, the cooking mode is closely related to temperature changes and smoke concentration during the cooking process. Different cooking modes (such as steaming, boiling, stir-frying, deep-frying, etc.) will produce different temperatures and smoke concentrations. Therefore, by detecting the temperature and smoke concentration in real time, we can accurately determine the current cooking mode and adjust the operating parameters of the range hood accordingly, such as fan speed and noise, to provide a smoke extraction effect that better meets the user's needs.

[0145] Step S310C3: Control the fan to operate at the corresponding speed according to the cooking mode.

[0146] Understandably, the fan speed is one of the key factors affecting the smoke extraction effect of a range hood. Depending on the cooking mode, the fan speed needs to be adjusted to adapt to different smoke extraction needs. For example, when stir-frying or deep-frying, more smoke is produced, so the fan speed needs to be increased to speed up smoke extraction; while when steaming or boiling, less smoke is produced, so the fan speed can be appropriately reduced to reduce noise and energy consumption.

[0147] In this embodiment, automatic control of the fan speed can be achieved through a preset algorithm or model. First, a corresponding fan speed range is set according to different cooking modes. Then, while monitoring the temperature and smoke concentration in real time, the fan speed is dynamically adjusted based on changes in smoke concentration. For example, when the smoke concentration exceeds a preset threshold, the fan speed can be gradually increased; when the smoke concentration decreases to a certain level, the fan speed can be appropriately reduced. This allows for precise control of the fan speed, providing a more comfortable and efficient smoke extraction experience.

[0148] Furthermore, to further enhance the intelligence and user experience of the range hood, control strategies can be optimized by incorporating data from other sensors and user feedback. For example, parameters such as humidity and air pressure in the kitchen can be detected to more accurately determine cooking modes and smoke extraction needs. Simultaneously, user data and feedback can be collected to continuously optimize control algorithms and models, thus meeting the needs and preferences of different users.

[0149] In one feasible implementation, refer to Figure 8 Step S220 includes step S221C, where the color change is within a second preset color change range and the temperature change is within a third preset temperature change range, and the feature information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the unused state.

[0150] In this embodiment, the second preset color change range and the third preset temperature change range are set according to the actual situation when the stove is ignited but the cookware is not in use, and are used to describe the range of color and temperature changes that may occur in the target detection area under this state. For example, the third temperature range corresponds to the temperature range when the flame is burning but the cookware is not in direct contact with the flame, such as between 500°C and 800°C, or between 600°C and 900°C, while the second color range still corresponds to the color appearance of the flame in the detection device, such as the color detection value corresponding to orange-red to yellow. When the color change detected by the color detection device 20 falls into the second preset color change range, and the temperature change detected by the temperature detection device 30 also falls into the third preset temperature change range, it can be determined that the stove is in the ignition state and the cookware is in the unused state.

[0151] In one feasible implementation, refer to Figure 9 Step S220 includes step S221D, where when the color change is greater than a preset color threshold and the temperature change is greater than a preset temperature threshold, the feature information of the target detection area is determined to be that there is an abnormal flame in the target detection area.

[0152] In this embodiment, the preset color threshold and preset temperature threshold can be safety thresholds defined based on historical fire data or experimental data, used to describe the color and temperature changes that may occur in the target detection area when an abnormal flame is present. The R, G, B values ​​of the preset color threshold can be (255, 100, 0) or (255, 80, 0) or color values ​​similar to the above R, G, B values. The preset temperature threshold can specifically be the upper limit of the temperature of the flame or heat source generated by the cooking equipment under normal working conditions, such as 1000℃, 1200℃, etc. For different cooking equipment, such as induction cookers, ovens, microwave ovens, etc., the upper limit of the heat source temperature may be different, and the specific value needs to be determined according to the characteristics and working conditions of the equipment. In addition, based on the specific color and temperature characteristics of the cookware and stove, the usage status of the cookware and stove can also be judged by comprehensively judging the color detection value and the temperature detection value. When the color change detected by the color detection device 20 exceeds the preset color threshold, and the temperature change detected by the temperature detection device 30 also exceeds the preset temperature threshold, the system can quickly determine that there is an abnormal flame in the target detection area. In this embodiment, an abnormal flame refers to an abnormal flame that exceeds the safe range, which may be caused by a fire, gas leak, or other reasons. Once an abnormal flame is detected, the system should immediately take emergency measures to ensure user safety and prevent the fire from spreading.

[0153] Understandably, to further improve the reliability and accuracy of the system, the smoke detector can be equipped with multiple sensors for cross-validation and redundant detection. For example, smoke sensors and flame detectors can be added. These sensors can work in conjunction with the color detection device 20 and the temperature detection device 30 to jointly determine the safety status of the target detection area. When multiple sensors simultaneously detect abnormal signals, the system will more confidently trigger the emergency response mechanism, thereby ensuring the user's safety to the greatest extent.

[0154] In one possible implementation, the range hood includes an alarm device 50. (See reference...) Figure 10 Step S300 includes step S310D, where the alarm device 50 is controlled to work to alert the user when the feature information of the target detection area indicates that the stove is in the ignition state and the pot is in the unused state for a preset time, or when the feature information of the target detection area indicates that there is an abnormal flame in the target detection area.

[0155] Understandably, when the stove is ignited but the cookware remains unused for an extended period, or when an abnormal flame is detected in the target detection area, the range hood is equipped with an alarm device 50 to promptly alert the user and allow for appropriate action. This device uses sound, flashing lights, or other means to warn the user. This timely warning not only helps users detect and address abnormalities promptly but also helps prevent potential safety hazards to some extent.

[0156] In this embodiment, when the system detects that the stove is already ignited but the cookware has not been used for a long time, or when it determines through color detection, temperature detection, or other means that there is an abnormal flame in the target detection area, the alarm device 50 will be activated immediately. This device can issue warnings in various ways, such as audible alarms, flashing lights, and displaying warning information on the screen, to attract the user's attention. Audible alarms are usually the most direct and effective way to remind users, quickly attracting their attention. Flashing lights can provide a clear visual cue within the user's line of sight, especially effective at night or in low-light environments. Displaying warning information on the screen can provide more detailed information, helping the user understand the specific situation and take appropriate action.

[0157] In this embodiment, after determining the characteristic information of abnormal flames in the target detection area, the smoke hood will immediately activate an emergency response mechanism, including but not limited to issuing a fire alarm, automatically shutting off the gas valve, activating the smoke exhaust system to maximum power to quickly remove smoke and harmful gases, and may also trigger other safety equipment such as automatic sprinkler systems or notify the fire department. This rapid response mechanism can greatly reduce losses caused by fires and protect user safety.

[0158] Understandably, the alarm device 50 can also be connected to the first light fixture 40. When the alarm device 50 is triggered, the flashing mode or color of the first light fixture 40 can be further controlled to provide a more obvious visual cue. For example, when the stove is lit but the cookware has not been used for a long time, the first light fixture 40 can flash slowly at a specific frequency to remind the user to check the status of the stove; while when the system detects an abnormal flame in the target detection area, the first light fixture 40 can flash rapidly at a high frequency and may switch to red or other conspicuous colors to attract the user's urgent attention. In addition, to provide more comprehensive safety protection, the range hood can also be connected to the user's smartphone or other smart devices to send warning information to the user's device via push notification, so that even if the user is not in the kitchen, they can receive warning information in a timely manner and take appropriate measures.

[0159] It is understandable that, in practical applications, the specific implementation of the range hood control method may vary depending on factors such as equipment model and functional configuration. However, regardless of the implementation method, the range hood control method proposed in this invention can control the operation of the range hood by real-time detection of the color and temperature information of the target detection area and determining feature information based on this information, thereby achieving intelligent control of the range hood. This control method is not only simple to operate and easy to implement, but also meets the control needs of different scenarios, improves the intelligence of the range hood, and enhances the comfort and safety of the kitchen environment.

[0160] The range hood proposed in this invention includes a color detection device 20 and a temperature detection device 30. Its control method involves acquiring the color detection value of the target detection area detected by the color detection device 20 and the temperature detection value of the target detection area detected by the temperature detection device 30. Based on the color and temperature detection values, feature information of the target detection area is determined, and then the range hood is controlled to perform corresponding actions according to the determined feature information. Thus, by combining the color detection device 20 and the temperature detection device 30, this invention can accurately identify feature information such as the presence of a human body in the target detection area, the presence of an abnormal flame in the target detection area, the stove being ignited and the cookware being used, and the stove being ignited and the cookware being unused. Based on different feature information, corresponding control is performed, meeting the control needs of different scenarios without manual operation, thereby improving the intelligence of the range hood.

[0161] The present invention also provides a smoke hood control device, see reference. Figure 15 The smoke hood control device includes: a memory 60, a processor 70, and a smoke hood control program stored in the memory 60 and executable on the processor 70. The smoke hood control program is configured to implement the steps of the smoke hood control method.

[0162] The range hood control device provided by this invention, employing the range hood control method in the above embodiments, can improve the intelligence of the range hood. Compared with the prior art, the beneficial effects of the range hood control device provided by this invention are the same as those of the range hood control method provided in the above embodiments, and other technical features in the range hood control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0163] The present invention also provides a range hood, the range hood including a range hood body 10, a color detection device 20 and a temperature detection device 30, the color detection device 20 and the temperature detection device 30 being respectively disposed on the range hood body 10, the range hood using the range hood control method described above, or the range hood further including the range hood control device described above.

[0164] In one feasible embodiment, the range hood further includes a first lamp 40, which is disposed on the range hood body 10.

[0165] In this embodiment, when the feature information of the target detection area is determined to indicate the presence of a human body, and the color detection value is lower than a preset first color detection value, it indicates that the current ambient light may be insufficient, which will affect the user's vision and operation in that area. Therefore, controlling the first lamp 40 to operate, such as turning it on or increasing its brightness, can effectively improve the lighting conditions and provide the user with a better user experience.

[0166] In one feasible embodiment, the smoke hood further includes a wireless communication device 80, which is communicatively connected to one or more light fixtures in the same environment as the smoke hood. The wireless communication device is used to output control signals to control at least one light fixture in the same environment as the smoke hood to operate.

[0167] In this embodiment, the lighting fixtures in the same environment as the range hood can be other lighting equipment in the kitchen, such as chandeliers and wall lamps. These lighting fixtures are connected to the range hood via a wireless communication device 80, enabling real-time information interaction and control. When the feature information of the target detection area is determined to indicate the presence of a human body, and the color detection value is lower than a preset first color detection value, the wireless communication device 80 will output a control signal to control at least one lighting fixture in the same environment as the range hood to operate. In this way, in addition to the lighting equipment built into the range hood, other lighting fixtures can be controlled to further improve the lighting situation and provide users with a more comprehensive and uniform lighting effect. The wireless communication device 80 in this embodiment can use existing wireless communication technologies, such as Bluetooth, Wi-Fi, ZigBee, etc., to achieve communication connection and control with external lighting fixtures. At the same time, in order to ensure the stability and reliability of communication, corresponding communication protocols and encryption technologies can also be used to ensure the accurate transmission and reception of control signals.

[0168] In one feasible embodiment, the range hood further includes a fan, which can be installed within the main body 10 of the range hood. The fan operates at a corresponding speed according to the cooking mode determined by the range hood control device or the range hood control program. The range hood fan is an indispensable part of the kitchen exhaust system, and its performance directly affects the comfort and safety of the kitchen environment. Traditional range hood fans typically use a fixed speed or are manually operated to a preset speed setting, resulting in a low level of automation.

[0169] This invention provides a range hood control device or program that determines the optimal fan speed based on real-time detected information such as color and temperature of the target detection area, as well as the user-set cooking mode. For example, in frying / stir-frying mode, due to the large amount of oil fumes produced, the range hood control device increases the fan speed to accelerate fume extraction; while in steaming / cooking mode, due to the smaller amount of oil fumes produced, the range hood control device decreases the fan speed to reduce noise and energy consumption. Automatically adjusting the fan speed according to the cooking mode not only improves the range hood's performance but also reduces energy consumption and noise, creating a more comfortable and safer kitchen environment for users and enhancing the range hood's intelligence.

[0170] In one feasible implementation, the range hood further includes an alarm device 50, which is used to alert the user when the characteristic information of the target detection area indicates that the stove is ignited and the pot has been in an unused state for a preset time, or when the characteristic information of the target detection area indicates that there is an abnormal flame in the target detection area.

[0171] Understandably, when the stove is ignited but the cookware remains unused for an extended period, or when an abnormal flame is detected in the target detection area, the range hood is equipped with an alarm device 50 to promptly alert the user and allow for appropriate action. This device uses sound, light, or other means to warn the user. This timely warning not only helps users detect and address abnormal situations promptly but also helps prevent potential safety hazards to some extent.

[0172] In this embodiment, when the system detects that the stove has been ignited but the cookware has not been used for a long time, or when it determines through color detection, temperature detection, or other means that there is an abnormal flame in the target detection area, the alarm device 50 will be activated immediately. This device can issue warnings in various ways, such as audible alarms, light colors, flashing lights, and displaying warning information on the screen, to attract the user's attention. Audible alarms are usually the most direct and effective way to alert the user, quickly attracting their attention. Flashing lights provide a clear visual cue within the user's line of sight, especially effective at night or in low-light environments. Displaying warning information on the screen provides more detailed information, helping the user understand the specific situation and take appropriate action.

[0173] In this embodiment, after determining the characteristic information of abnormal flames in the target detection area, the smoke hood will immediately activate an emergency response mechanism, including but not limited to issuing a fire alarm, automatically shutting off the gas valve, activating the smoke exhaust system to maximum power to quickly remove smoke and harmful gases, and may also trigger other safety equipment such as automatic sprinkler systems or notify the fire department. This rapid response mechanism can greatly reduce losses caused by fires and protect user safety.

[0174] Understandably, the alarm device 50 can also be electrically connected to the first light fixture 40. When the alarm device 50 is triggered, the flashing mode or color of the first light fixture 40 can be further controlled to provide a more obvious visual cue. For example, when the stove is ignited but the cookware has not been used for a long time, the first light fixture 40 can flash slowly at a specific frequency to remind the user to check the stove status; while when the system detects an abnormal flame in the target detection area, the first light fixture 40 can flash rapidly at a high frequency and may switch to red or other conspicuous colors to attract the user's urgent attention. In addition, to provide more comprehensive safety protection, the range hood can also be connected to the user's smartphone or other smart devices to send warning information to the user's device via push notification, so that even if the user is not in the kitchen, they can receive warning information in a timely manner and take appropriate measures.

[0175] The above description is only a part of the embodiments of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the technical concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A method for controlling a smoke hood, characterized in that, The smoke hood includes a color detection device and a temperature detection device, and the method includes: Obtain the color detection value of the target detection area detected by the color detection device, and obtain the temperature detection value of the target detection area detected by the temperature detection device; The feature information of the target detection area is determined based on the color detection value and the temperature detection value; The smoke machine is controlled to perform corresponding actions based on the feature information of the determined target detection area.

2. The smoke machine control method as described in claim 1, characterized in that, The feature information of the target detection region includes one or more of the following: The target detection area contains a human body; the target detection area contains an abnormal flame; the stove is in the ignition state and the pot is in use; the stove is in the ignition state and the pot is not in use. And / or, controlling the smoke machine to perform corresponding actions includes one or more of the following: controlling the first light fixture on the smoke machine to work and / or controlling the light fixtures in the same environment as the smoke machine to work, controlling the fan speed of the smoke machine, and controlling the alarm device to work.

3. The smoke machine control method as described in claim 1, characterized in that, The step of determining the feature information of the target detection region based on the color detection value and the temperature detection value includes: Determine the amount of color change between the color reference value and the color detection value, and the amount of temperature change between the temperature reference value and the temperature detection value; The feature information of the target detection area is determined based on the color change and the temperature change.

4. The smoke hood control method as described in claim 3, characterized in that, The step of determining the feature information of the target detection area based on the color change and the temperature change includes: When the color change is within a first preset color range and the temperature change is within a first preset temperature range, the feature information of the target detection area is determined to indicate that a human body exists in the target detection area.

5. The smoke hood control method as described in claim 4, characterized in that, The smoke machine includes a first lamp, and the step of controlling the smoke machine to perform corresponding actions based on the feature information of the determined target detection area includes: When the feature information of the target detection area indicates the presence of a human body in the target detection area, and the color detection value is lower than a preset first color detection value, the first lamp is controlled to work.

6. The smoke hood control method as described in claim 4, characterized in that, The smoke machine includes a wireless communication device, and the step of controlling the smoke machine to perform corresponding actions based on the current feature information of the determined target detection area includes: When the feature information of the target detection area indicates the presence of a human body in the target detection area, and the color detection value is lower than a preset first color detection value, the wireless communication device is controlled to output a control signal to control at least one lamp that is in the same environment as the smoke machine to work.

7. The smoke hood control method as described in claim 3, characterized in that, The range hood and the cooktop are correspondingly configured, and the cooktop can be used with cookware; the step of determining the feature information of the target detection area based on the color change and the temperature change includes: When the color change is within a second preset color range and the temperature change is within a second preset temperature range, the feature information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the use state.

8. The smoke hood control method as described in claim 7, characterized in that, The smoke machine includes a fan, and the step of controlling the smoke machine to perform corresponding actions based on the feature information of the determined target detection area includes: When the characteristic information of the target detection area is that the stove is in the ignition state and the pot is in the use state, the smoke concentration of the target detection area is determined based on the color detection value and the temperature detection value. The cooking mode is determined based on the temperature detection value and the smoke concentration. According to the cooking mode, the fan is controlled to operate at the corresponding speed.

9. The smoke hood control method as described in claim 7, characterized in that, The step of determining the feature information of the target detection area based on the color change and the temperature change further includes: When the color change is within a second preset color change range and the temperature change is within a third preset temperature change range, the characteristic information of the target detection area is determined to be that the stove is in the ignition state and the cookware is in the unused state.

10. The smoke machine control method as described in claim 3, characterized in that, The step of determining the feature information of the target detection area based on the color change and the temperature change includes: When the color change is greater than a preset color threshold and the temperature change is greater than a preset temperature threshold, the feature information of the target detection area is determined to be that there is an abnormal flame in the target detection area.

11. The smoke machine control method as described in claim 9 or 10, characterized in that, The smoke machine includes an alarm device; the step of controlling the smoke machine to perform corresponding actions based on the current feature information of the determined target detection area includes: When the characteristic information of the target detection area indicates that the stove is in the ignition state and the pot is in the unused state for a preset time, or when the characteristic information of the target detection area indicates that there is an abnormal flame in the target detection area, the alarm device is controlled to work to alert the user.

12. The smoke machine control method as described in claim 3, characterized in that, The color reference value is a pre-stored color reference value, and / or the temperature reference value is a pre-stored temperature reference value.

13. The smoke hood control method as described in claim 3, characterized in that, The method further includes: Based on the color detection device, multiple light intensity values ​​of the target detection area and the corresponding color detection value for each light intensity value are obtained within a first preset time period; The rate of change of light intensity within a first preset time period is determined based on multiple light intensity values; When the light intensity change rate is less than the preset light intensity change rate, the last acquired color detection value is used as the color reference value of the target detection area.

14. The smoke machine control method as described in claim 3, characterized in that, The method further includes: Obtain the light intensity value of the target detection area; The color reference value is determined based on the light intensity value of the target detection area and the correspondence between the preset light intensity value and the color reference value.

15. The smoke machine control method as described in claim 3, characterized in that, The method further includes: Obtain multiple temperature detection values ​​of the target detection area within a second preset time period; The rate of temperature change within a second preset time period is determined based on multiple temperature detection values; When the temperature change rate is less than the preset temperature change rate, the last acquired temperature detection value is used as the temperature reference value of the target detection area.

16. A smoke machine control device, characterized in that, The smoke hood control device includes: a memory, a processor, and a smoke hood control program stored in the memory and executable on the processor, the smoke hood control program being configured to implement the steps of the smoke hood control method as described in any one of claims 1 to 15.

17. A range hood, characterized in that, The range hood includes a main body, a color detection device, and a temperature detection device. The color detection device and the temperature detection device are respectively disposed on the main body of the range hood. The range hood uses the range hood control method as described in any one of claims 1 to 15. Alternatively, the range hood further includes the range hood control device as described in claim 16 or the above.

18. The range hood as described in claim 17, characterized in that, The range hood also includes: A first lamp is installed on the main body of the range hood; Alternatively, a wireless communication device may be used to output control signals to control at least one light fixture that is in the same environment as the smoke machine.

19. The smoke hood as described in claim 17, characterized in that, The range hood also includes a fan, which operates at a corresponding speed according to the cooking mode determined by the range hood control device or range hood control program.

20. The smoke hood as described in claim 17, characterized in that, The range hood also includes an alarm device, which is used to alert the user when the characteristic information of the target detection area indicates that the stove is in the ignition state and the pot is in the unused state for a preset time, or when the characteristic information of the target detection area indicates that there is an abnormal flame in the target detection area.

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