Control method and system of range hood and range hood

Abstract

The invention provides a control method and system of an extractor hood and the extractor hood. An array infrared sensor is arranged on the extractor hood. The method comprises the steps that if real-time gesture information is detected through an array infrared sensor, whether the real-time gesture information is stored in a preset gesture database or not is judged; if the real-time gesture information is stored in the gesture database, judging whether the real-time gesture information meets a preset small-size standard or not; the small-size standard is used for representing hand size characteristics of the child; if the real-time gesture information does not meet the preset small-size standard, determining a target control instruction corresponding to the real-time gesture information; and controlling the extractor hood to operate according to the target control instruction. In the mode, the real-time gesture information of the user is acquired through the array infrared sensor arranged on the range hood, and the size of the real-time gesture information is judged, so that the identity of a gesture sender can be distinguished, a child is prevented from touching the range hood by mistake, and the potential safety hazard is eliminated.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a control method, system and range hood for a range hood. Background Technology

[0002] The current hand gesture principle of range hoods involves infrared devices on the far left and far right of the switch at the sensor. When the user waves their hand in front of the infrared device, the infrared light senses the human body and automatically turns the range hood on or off. However, the existing infrared devices cannot distinguish the identity of the person making the gesture, and children can also turn on the range hood by waving their hand, which poses a safety hazard. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a control method, system and range hood for a range hood that can distinguish the identity of the person making the gesture, thereby preventing children from accidentally touching it and eliminating safety hazards.

[0004] In a first aspect, embodiments of the present invention provide a control method for a range hood, wherein the range hood is equipped with an array infrared sensor; the method includes: if real-time gesture information is detected by the array infrared sensor, determining whether the real-time gesture information is stored in a preset gesture database; the gesture database stores multiple gesture information and corresponding control commands; if the real-time gesture information is stored in the gesture database, determining whether the real-time gesture information conforms to a preset small size standard; the small size standard is used to characterize the hand size characteristics of children; if the real-time gesture information does not conform to the preset small size standard, determining the target control command corresponding to the real-time gesture information; and controlling the range hood to operate according to the target control command.

[0005] Furthermore, the range hood includes a gesture setting mode; prior to the step of detecting real-time gesture information through an array infrared sensor, the method further includes: when the range hood is in the gesture setting mode, selecting a control command to be customized; receiving custom gesture information sent by the user through the array infrared sensor; determining that the custom gesture information is the gesture information corresponding to the control command to be customized, and storing the correspondence between the custom gesture information and the custom control command in the gesture database.

[0006] Furthermore, the custom gesture is at least one static gesture or at least one dynamic gesture; the dynamic gesture is a fixed character formed by finger movement within a preset time interval; the control instructions include default control instructions and custom control instructions; the gesture database stores the correspondence between default gesture information and default control instructions.

[0007] Furthermore, if real-time gesture information is detected by the array infrared sensor, the step of determining whether the real-time gesture information is stored in the preset gesture database includes: detecting real-time gesture information within a preset time period by the array infrared sensor; determining whether the real-time gesture information is continuous gesture information; continuous gesture information is real-time gesture information including at least two consecutive real-time gestures; if the real-time gesture information is continuous gesture information, determining whether the real-time gesture information is the same as a custom gesture in the gesture database; if the real-time gesture information is not continuous gesture information, determining whether the real-time gesture information is the same as a default gesture or a custom gesture in the gesture database.

[0008] Furthermore, if the real-time gesture information does not conform to the preset small size standard, the step of determining the target control command corresponding to the real-time gesture information includes: determining whether the gesture information is the default gesture information; if so, determining the target control command corresponding to the default gesture information based on the correspondence between the default gesture information and the default control command; if not, determining the target control command corresponding to the custom gesture information based on the correspondence between the custom gesture information and the custom control command.

[0009] Furthermore, the preset small size standards include: the finger height in the gesture information is less than 40 mm; or the fist size in the gesture information is less than 30×30 mm; or the palm size in the gesture information is less than 30×50 mm.

[0010] Secondly, embodiments of the present invention provide a control system for a range hood, the system comprising: a sensor module, configured to determine whether real-time gesture information is stored in a preset gesture database if real-time gesture information is detected; the gesture database stores multiple gesture information and corresponding control commands; a control module, configured to determine whether real-time gesture information conforms to a preset small size standard if real-time gesture information is stored in the gesture database; the small size standard is used to characterize the hand size characteristics of children; the control module is further configured to determine a target control command corresponding to the real-time gesture information if the real-time gesture information does not conform to the preset small size standard; and a drive module, configured to control the operation of the range hood according to the target control command.

[0011] Furthermore, the sensor module includes an array infrared sensor; the array infrared sensor encapsulates 128×128 thermopile elements, a silicon-based lens, and a sensor chip.

[0012] Thirdly, embodiments of the present invention provide a range hood, including a range hood body and a fan disposed in the range hood body, and also including the control system of the range hood, wherein the control system of the range hood is disposed in the range hood body; the fan is connected to a drive module in the control system of the range hood; the drive module is further used to control the operation of the fan according to control commands.

[0013] Furthermore, the range hood is also equipped with operation buttons; these operation buttons are connected to the control module in the range hood's control system.

[0014] This invention provides a control method, system, and range hood for a range hood equipped with an array of infrared sensors. The method includes: if real-time gesture information is detected by the array of infrared sensors, determining whether the real-time gesture information is stored in a preset gesture database; the gesture database stores multiple gesture information and corresponding control commands; if the real-time gesture information is stored in the gesture database, determining whether the real-time gesture information conforms to a preset small size standard; the small size standard is used to characterize the hand size characteristics of children; if the real-time gesture information does not conform to the preset small size standard, determining the target control command corresponding to the real-time gesture information; and controlling the range hood to operate according to the target control command. In this method, by acquiring the user's real-time gesture information through the array of infrared sensors installed on the range hood and judging the size of the real-time gesture information, the identity of the person making the gesture can be distinguished, thereby preventing children from accidentally touching the screen and eliminating safety hazards.

[0015] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a flowchart of the control method for a range hood provided in Embodiment 1 of the present invention;

[0019] Figure 2 This is a schematic diagram of sensor detection provided in Embodiment 1 of the present invention;

[0020] Figure 3 This is a schematic diagram of a gesture shape provided in Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of a gesture shape including multiple measurement points provided in Embodiment 1 of the present invention;

[0022] Figure 5 A flowchart illustrating the steps of providing a custom control command according to Embodiment 1 of the present invention;

[0023] Figure 6 A flowchart illustrating the steps for determining whether real-time gesture information is stored in a preset gesture database, as provided in Embodiment 1 of the present invention;

[0024] Figure 7 This is a flowchart of the steps for determining the target control command corresponding to the real-time gesture information if the real-time gesture information does not meet the preset small size standard, as provided in Embodiment 1 of the present invention.

[0025] Figure 8 This is a schematic diagram of the control system of the range hood provided in Embodiment 2 of the present invention;

[0026] Figure 9 This is a schematic diagram of a range hood provided in Embodiment 3 of the present invention.

[0027] Icons: 1-Sensor module; 2-Control module; 3-Drive module; 4-Range hood body; 5-Fan; 6-Range hood control system. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To facilitate understanding of this embodiment, the embodiments of the present invention will be described in detail below.

[0030] Example 1:

[0031] Figure 1 This is a flowchart of a control method for a range hood provided in Embodiment 1 of the present invention.

[0032] The control method for range hoods is applied to range hoods. An array of infrared sensors is installed on the user-facing side of the range hood control panel, with the sensors positioned in the center of the control panel.

[0033] Here, the array infrared sensor can be a thermopile array infrared sensor. This sensor encapsulates 128×128 thermopile elements in a grid layout, enabling the detection of the absolute temperature of an object's surface without contact. The thermopile array infrared sensor also includes a 60° silicon-based lens, fabricated on a silicon wafer through an etching process. The coordinated array of thermopile sensing elements in the thermopile array infrared sensor can detect the movement of multiple people or objects in different directions. At close range, reference... Figure 2 This sensor can detect the movement of a person's hand, enabling simple gesture control.

[0034] Reference Figure 1 The control methods for range hoods include:

[0035] Step S101: If real-time gesture information is detected by the array infrared sensor, determine whether the real-time gesture information is stored in the preset gesture database; the gesture database stores multiple gesture information and the corresponding control commands.

[0036] Here, the gesture information is as follows: Figure 3 The gesture shown. (Refer to...) Figure 4 When a user detects real-time gesture information, the array of infrared sensors converts the real-time gesture information into a gesture shape that includes multiple measurement points.

[0037] In one embodiment, the range hood includes a gesture setting mode.

[0038] Here, the range hood also includes a default mode, which pre-sets the correspondence between default gesture information and default control commands. The correspondence between the default gesture information and default control commands in the default mode is stored in a gesture database.

[0039] For example, the default gesture information "1" represents level 1, corresponding to the default control command of adjusting the range hood to the stir-fry setting; the default gesture information "2" represents level 2, corresponding to the default control command of adjusting the range hood to the high setting; the default gesture information "3" represents level 3, corresponding to the default control command of adjusting the range hood to the low setting; the default gesture information "palm" represents the on setting, corresponding to the default control command of turning on; and the default gesture information "fist" represents the off setting, corresponding to the default control command of turning off.

[0040] In one embodiment, the range hood includes a gesture setting mode, as shown in the following example. Figure 5Before step S101, which involves detecting real-time gesture information via an array of infrared sensors, the method further includes:

[0041] Step S201: When the range hood is in gesture setting mode, select the control command to be customized.

[0042] Here, the customizable control commands can be to turn the range hood light on or off, adjust the fan speed to a higher setting, adjust the fan speed to a lower setting, and put the range hood into standby mode, etc.

[0043] Step S202: Receive custom gesture information sent by the user through an array infrared sensor.

[0044] Here, a custom gesture is at least one static gesture or at least one dynamic gesture; a dynamic gesture is a fixed character formed by finger movement within a preset time interval; the control instructions include default control instructions and custom control instructions.

[0045] Static gestures include fixed numbers, such as the sign language gesture for the number "1" and the sign language gesture for the number "4". Dynamic gestures include fixed letters formed by finger movements within a preset time period, such as the sign language gesture for the letter "L" and the sign language gesture for the letter "V".

[0046] Custom gestures can be a single gesture or a series of gestures. A single gesture can be a static gesture or a dynamic gesture; a series of gestures can be a combination of multiple static gestures or multiple dynamic gestures, with a preset time interval between each static or dynamic gesture input.

[0047] The preset time interval is set in advance according to the actual situation, and can be set to 1 second.

[0048] Specifically, continuous gestures can be composed of multiple static gestures, such as the continuous gesture "12" composed of the sign language gestures for the number "1" and the sign language gestures for the number "2". Continuous gestures can also be composed of multiple dynamic gestures, such as the continuous gesture "LO" composed of the sign language gestures for the letter "L" and the sign language gestures for the letter "O".

[0049] Step S203: Determine the custom gesture information as the gesture information corresponding to the custom control command to be customized, and store the correspondence between the custom gesture information and the custom control command in the gesture database.

[0050] Specifically, when the range hood is in gesture setting mode, the user selects the custom control command "Adjust fan speed to one lower level" and retrieves the dynamic gestures "L" and "O" formed by the user's finger movements within a preset time period. The preset time period is pre-set based on actual conditions and can be 30 seconds. The preset time interval between two dynamic gestures input by the user is also specified. The control command corresponding to the continuous gesture "LO" is set to "Adjust fan speed to one lower level".

[0051] Select the custom control command "Adjust the range hood to standby mode", obtain the static gestures "2" and "3" continuously input by the user within a preset time period, and set the control command corresponding to the continuous gesture "23" to adjust the range hood to standby mode.

[0052] Select the custom control command "Turn on or turn off the range hood light", obtain the dynamic gesture "V" entered by the user within a preset time period, and set the control command corresponding to the dynamic gesture "V" to turn on or turn off the range hood light.

[0053] Select the custom control command "Adjust airflow to the highest level", obtain the dynamic styling gesture "H" entered by the user within the preset time period, and set the control command corresponding to the dynamic styling gesture "H" to adjust airflow to the highest level.

[0054] In one embodiment, reference is made to Figure 6 Step S101 includes:

[0055] Step S401: Detect real-time gesture information within a preset time period using an array infrared sensor; determine whether the real-time gesture information is continuous gesture information; continuous gesture information is real-time gesture information that includes at least two consecutive real-time gestures.

[0056] Here, real-time gesture information refers to one or more real-time gestures input within a preset time period.

[0057] Step S402: If the real-time gesture information is continuous gesture information, determine whether the real-time gesture information is the same as a custom gesture in the gesture database.

[0058] Here, the custom gesture is a pre-stored series of posing gestures.

[0059] Step S403: If the real-time gesture information is not continuous gesture information, determine whether the real-time gesture information is the same as a default gesture or a custom gesture in the gesture database.

[0060] Here, the custom gesture can be either a static or dynamic gesture.

[0061] Step S102: If the real-time gesture information is stored in the gesture database, determine whether the real-time gesture information conforms to the preset small size standard; the small size standard is used to characterize the hand size characteristics of children.

[0062] Here, the preset small size standards include: the finger height in the gesture information is less than 40 mm; or the fist size in the gesture information is less than 30×30 mm; or the palm size in the gesture information is less than 30×50 mm.

[0063] When real-time gesture information is in the gesture database, the distance between the highest and lowest points of the gesture, and the distance between the leftmost and rightmost points, are obtained. If the real-time gesture is a fist, the distance between the highest and lowest points, and the distance between the leftmost and rightmost points, constitutes the fist size. If the real-time gesture is a palm, the distance between the highest and lowest points, and the distance between the leftmost and rightmost points, constitutes the palm size. If the real-time gesture is neither a fist nor a palm, the distance between the highest and lowest points is determined to be the finger height.

[0064] When the real-time gesture information is a fist, determine whether the fist size is less than 30×30 mm. If so, determine that the real-time gesture information meets the preset small size standard and the current user is a child.

[0065] When the real-time gesture information is a palm, determine whether the palm size is less than 30×50 mm. If so, determine that the real-time gesture information meets the preset small size standard and the current user is a child.

[0066] When the real-time gesture information is not a fist or a palm, determine whether the finger height is less than 40 mm. If so, determine that the real-time gesture information meets the preset small size standard and the current user is a child.

[0067] If the real-time gesture information meets the preset small size standard, the working status of the range hood will not be adjusted.

[0068] Step S103: If the real-time gesture information does not conform to the preset small size standard, determine the target control command corresponding to the real-time gesture information.

[0069] In one embodiment, reference is made to Figure 7 Step S103 includes:

[0070] Step S301: Determine whether the gesture information is the default gesture information.

[0071] Step S302: If yes, determine the target control command corresponding to the default gesture information based on the correspondence between the default gesture information and the default control command.

[0072] Step S303: If not, determine the target control command corresponding to the custom gesture information based on the correspondence between the custom gesture information and the custom control command.

[0073] Here, the target control commands can be power on, power off, standby, and adjust airflow, etc.

[0074] Step S104: Control the range hood to operate according to the target control command.

[0075] Here, if the range hood is currently on, and the target gesture information received is a palm, the operating status of the range hood remains unchanged.

[0076] This invention provides a control method for a range hood, wherein the range hood is equipped with an array infrared sensor. The method includes: if real-time gesture information is detected by the array infrared sensor, determining whether the real-time gesture information is stored in a preset gesture database; the gesture database stores multiple gesture information and corresponding control commands; if the real-time gesture information is stored in the gesture database, determining whether the real-time gesture information conforms to a preset small size standard; the small size standard is used to characterize the hand size characteristics of children; if the real-time gesture information does not conform to the preset small size standard, determining the target control command corresponding to the real-time gesture information; and controlling the range hood to operate according to the target control command. In this method, by acquiring the user's real-time gesture information through the array infrared sensor installed on the range hood and judging the size of the real-time gesture information, the identity of the person making the gesture can be distinguished, thereby preventing children from accidentally touching the screen and eliminating safety hazards.

[0077] Example 2:

[0078] Figure 8 This is a schematic diagram of the control system of the range hood provided in Embodiment 2 of the present invention.

[0079] Reference Figure 8 The system includes:

[0080] Sensor module 1 is used to determine whether real-time gesture information is stored in a preset gesture database if real-time gesture information is detected; the gesture database stores multiple gesture information and corresponding control commands.

[0081] Control module 2 is used to determine whether the real-time gesture information conforms to a preset small size standard if the real-time gesture information is stored in the gesture database; the small size standard is used to characterize the hand size characteristics of children.

[0082] Control module 2 is also used to determine the target control command corresponding to the real-time gesture information if the real-time gesture information does not conform to the preset small size standard.

[0083] Drive module 3 is used to control the operation of the range hood according to the target control command.

[0084] Here, the sensor module 1 is positioned in the middle of the control panel of the range hood, which can more accurately collect the user's gesture information and reduce the possibility of misoperation.

[0085] Sensor module 1 is used to acquire the user's gesture information and convert the gesture information into digital information to be sent to control module 2.

[0086] Here, sensor module 1 is a thermopile array infrared sensor; the thermopile array infrared sensor encapsulates 128×128 thermopile elements, a silicon-based lens, and a sensor chip.

[0087] The thermopile array infrared sensor encapsulates 128×128 thermopile elements in a grid layout, enabling the detection of the absolute surface temperature of an object without contact. It also includes a 60° silicon-based lens, fabricated on a silicon wafer through an etching process. This sensor can detect not only moving people and objects, but also stationary people and objects, including their presence, location, direction of movement, and precise surface temperature. The temperature measurement range is -20℃ to +100℃. Due to its wide temperature range, its noise equivalent temperature difference is extremely accurate at room temperature. The coordinated array of thermopile sensing elements allows for the detection of multiple people or objects moving in different directions. At close range, the sensor can even detect hand movements, enabling simple gesture control.

[0088] The thermopile array infrared sensor generates a thermoelectric electromotive force across the two ends of the MEMS (Micro Electromechanical System) thermopile. A signal conditioning chip first converts the temperature signal into a small-amplitude electrical signal. This signal is then amplified and converted back into digital binary data. A signal acquisition channel consisting of a PGA (Programmable Gain Amplifier) ​​and a sigma-delta ADC (Analog-to-Digital Converter) is used to acquire the sensor signal with high precision. A built-in temperature sensor is used for high-precision temperature acquisition. Following the ADC is a digital filter; the oversampling rate (OSR) can be adjusted to set the oversampling rate of the signal chain during sensor signal acquisition. The digital signal processor analyzes and records the calibrated pressure data. An EEPROM (Electrically Erasable Programmable Read-Only Memory) stores calibration coefficients and some chip configuration information. Based on a sensor calibration algorithm with built-in digital signal processing, the system can calibrate the sensor's zero point and sensitivity for second-order and lower-order temperature drift, as well as nonlinearities up to third order, and compensate for ambient temperature, ultimately outputting the target temperature. An internal LDO (low-dropout linear regulator) provides a fixed-level power supply to the analog and digital circuits. The system's internal clock source can flexibly switch between low-frequency sleep mode and high-frequency mode to achieve a higher sampling rate.

[0089] Control module 2 is used to generate control commands based on digital information and send the control commands to drive module 3.

[0090] Here, control commands can include power on, power off, standby, fan speed up, and fan speed down.

[0091] Driver module 3 is used to operate according to control commands.

[0092] Furthermore, sensor module 1 is also used for:

[0093] When the range hood is in gesture setting mode, select the control command to be customized.

[0094] Custom gesture information sent by the user is received through a thermopile array infrared sensor.

[0095] The custom gesture information is identified as the gesture information corresponding to the custom control command to be defined, and the correspondence between the custom gesture information and the custom control command is stored in the gesture database.

[0096] Furthermore, control module 2 is also used for:

[0097] When the range hood is in gesture setting mode, select the control command to be customized.

[0098] The system receives custom gesture information sent by the user via an array of infrared sensors.

[0099] The custom gesture information is identified as the gesture information corresponding to the custom control command to be defined, and the correspondence between the custom gesture information and the custom control command is stored in the gesture database.

[0100] Among them, the custom gesture is at least one static gesture or at least one dynamic gesture; the dynamic gesture is a fixed character formed by finger movement within a preset time interval; the control instructions include default control instructions and control instructions to be customized; the gesture database stores the correspondence between default gesture information and default control instructions.

[0101] Furthermore, sensor module 1 is also used for:

[0102] Real-time gesture information is detected within a preset time period using an array of infrared sensors; it is then determined whether the real-time gesture information is continuous; continuous gesture information is real-time gesture information that includes at least two consecutive real-time gestures.

[0103] If the real-time gesture information is continuous gesture information, determine whether the real-time gesture information is the same as a custom gesture in the gesture database.

[0104] If the real-time gesture information is not continuous, determine whether the real-time gesture information is the same as a default gesture or a custom gesture in the gesture database.

[0105] Furthermore, control module 2 is also used for:

[0106] Determine if the gesture information is the default gesture information.

[0107] If so, determine the target control command corresponding to the default gesture information based on the correspondence between the default gesture information and the default control command.

[0108] If not, determine the target control command corresponding to the custom gesture information based on the correspondence between custom gesture information and custom control commands.

[0109] The preset small size standards include: the finger height in the gesture information is less than 40 mm; or the fist size in the gesture information is less than 30×30 mm; or the palm size in the gesture information is less than 30×50 mm.

[0110] This invention provides a control system for a range hood. In this system, a thermopile array infrared sensor installed on the range hood acquires the user's real-time gesture information and judges the magnitude of the real-time gesture information to distinguish the identity of the person making the gesture, thereby preventing children from accidentally touching the device and eliminating safety hazards.

[0111] Example 3:

[0112] Figure 9 This is a schematic diagram of a range hood provided in Embodiment 3 of the present invention.

[0113] Reference Figure 9 The range hood includes: a range hood body 4 and a fan 5 disposed in the range hood body 4, and also includes the aforementioned range hood control system 6, which is disposed in the range hood body 4; the fan 5 is connected to the drive module in the range hood control system 6.

[0114] The drive module is also used to control the operation of the fan 5 according to control commands.

[0115] Here, the range hood may also include a range hood light, and the control commands may also be to turn the range hood light on and off, etc. The drive module is connected to the range hood light and controls the operation of the range hood light through the control commands.

[0116] In one embodiment, the range hood is also provided with operation keys; the operation keys are connected to the control module in the control system 6 of the range hood.

[0117] Here, the range hood includes a gesture setting mode and a default mode. Users can switch modes using the operation buttons, and can also directly control the fan and lights using the operation buttons.

[0118] This invention provides a range hood that uses an array of infrared sensors mounted on the range hood to acquire real-time user gesture information. This allows users to control the range hood's operation via gestures, improving the user experience. Furthermore, by judging the magnitude of the real-time gestures, the identity of the person making the gesture can be identified, preventing accidental activation by children and eliminating safety hazards.

[0119] The computer program product provided in this embodiment of the invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods described in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0120] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0121] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0122] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0123] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0124] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control method of a range hood, characterized by, The range hood is provided with an array infrared sensor; the method comprises: If real-time gesture information is detected by the array infrared sensor, it is determined whether the real-time gesture information is stored in a preset gesture database; the gesture database stores a plurality of gesture information and control instructions corresponding to the gesture information; If the real-time gesture information is stored in the gesture database, it is determined whether the real-time gesture information meets a preset small size standard; the small size standard is used to represent the size characteristics of a child's hand; If the real-time gesture information does not meet the preset small size standard, a target control instruction corresponding to the real-time gesture information is determined; The range hood is controlled to operate according to the target control instruction.

2. The control method of the range hood according to claim 1, characterized in that, The range hood comprises a gesture setting mode; Before the step of detecting real-time gesture information by the array infrared sensor, the method further comprises: When the range hood is in the gesture setting mode, a control instruction to be customized is selected; Customized gesture information sent by a user is received by the array infrared sensor; It is determined that the customized gesture information is gesture information corresponding to the control instruction to be customized, and a correspondence between the customized gesture information and the control instruction to be customized is stored in the gesture database.

3. The control method of the range hood according to claim 2, characterized in that, The customized gesture is at least one static gesture or at least one dynamic gesture; the dynamic gesture is a fixed character formed by finger movement within a preset time interval; the control instruction comprises a default control instruction and a control instruction to be customized; the gesture database stores a correspondence between default gesture information and the default control instruction.

4. The control method of the range hood according to claim 3, characterized in that, The step of determining whether the real-time gesture information is stored in the preset gesture database if the real-time gesture information is detected by the array infrared sensor comprises: The real-time gesture information within a preset time period is detected by the array infrared sensor; it is determined whether the real-time gesture information is continuous gesture information; the continuous gesture information is real-time gesture information comprising at least two continuous real-time gestures; If the real-time gesture information is the continuous gesture information, it is determined whether the real-time gesture information is identical to one of the customized gestures in the gesture database; If the real-time gesture information is not the continuous gesture information, it is determined whether the real-time gesture information is identical to one of the default gesture information or one of the customized gestures in the gesture database.

5. The control method of the range hood according to claim 3, characterized by, The step of determining the target control instruction corresponding to the real-time gesture information if the real-time gesture information does not meet the preset small size standard comprises: It is determined whether the gesture information is the default gesture information; If yes, the target control instruction corresponding to the default gesture information is determined according to the correspondence between the default gesture information and the default control instruction; If no, the target control instruction corresponding to the customized gesture information is determined according to the correspondence between the customized gesture information and the customized control instruction.

6. The control method of the range hood according to claim 1, characterized by, The preset small size criterion includes: a finger height in the gesture information is less than 40 mm; or a fist size in the gesture information is less than 30*30 mm; or a palm size in the gesture information is less than 30*50 mm.

7. A control system for a range hood, characterized by The system comprises: a sensor module, configured to determine whether real-time gesture information is stored in a preset gesture database if the real-time gesture information is detected; the gesture database stores a plurality of gesture information and control instructions corresponding to the gesture information; a control module, configured to determine whether the real-time gesture information meets a preset small size criterion if the real-time gesture information is stored in the gesture database; the small size criterion is used to represent a hand size feature of a child; the control module is further configured to determine a target control instruction corresponding to the real-time gesture information if the real-time gesture information does not meet the preset small size criterion; a driving module, configured to control the range hood to operate according to the target control instruction.

8. The control system of a range hood according to claim 7, characterized in that, The sensor module comprises an array infrared sensor; the array infrared sensor is encapsulated with 128*128 thermocouple elements, a silicon-based lens and a sensor chip.

9. A range hood characterized by, The range hood comprises a range hood body and a fan arranged in the range hood body, and further comprises the control system of the range hood according to any one of claims 7-8, the control system of the range hood being arranged in the range hood body; the fan is connected with the driving module in the control system of the range hood; the driving module is further configured to control the fan to operate according to the control instruction.

10. The hood according to claim 9, characterized in that, The range hood is further provided with an operation key; the operation key is connected with the control module in the control system of the range hood.

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