CN-122015152-A - Control method of range hood and range hood

CN122015152ACN 122015152 ACN122015152 ACN 122015152ACN-122015152-A

Abstract

The invention discloses a control method of a range hood and the range hood. The control method comprises the steps of determining the distance between a main user and the range hood in a space where the range hood is located by using a human body sensing module, determining a target gesture sensing distance according to the distance between the main user and the range hood, executing gesture detection operation in real time by using a gesture detection module within the target gesture sensing distance, and executing the gesture operation corresponding to preset range hood operation when the gesture operation is detected. The method and the device can determine the distance between the main user and the range hood, further determine the target gesture sensing distance according to the distance between the main user and the range hood, and automatically adjust the target gesture sensing distance when the distance between the main user and the range hood changes, so that the accuracy of the range hood in gesture motion detection of the user and the use experience of the user are improved.

Inventors

LIU RONG
BAI QINGSONG
YU FUQIANG
REN FUJIA
ZENG XIANWEI

Assignees

杭州老板电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. The control method of the range hood is characterized in that the range hood comprises a gesture detection module and a human body induction module, wherein the induction distance of the gesture detection module is adjustable; The control method comprises the following steps: Determining the distance between a main user in the space where the range hood is located and the range hood by using the human body sensing module; Determining a target gesture sensing distance according to the distance between the main user and the range hood; executing gesture detection operation in real time by utilizing the gesture detection module within the target gesture sensing distance; and when the gesture motion is detected, executing the preset smoke machine operation corresponding to the gesture motion.
2. The control method according to claim 1, wherein determining a distance between a main user of a space where the range hood is located and the range hood using the human body sensing module comprises: detecting all users and positions of the users in the space of the range hood by using the human body induction module; determining a user closest to or farthest from the range hood or a user carrying mobile equipment which is in mobile interconnection with the range hood as the main user; and determining the distance between the main user and the range hood according to the determined main user and the position thereof.
3. The control method according to claim 1, wherein determining a target gesture sensing distance according to a distance between the main user and the range hood comprises: determining the pre-stored arm length through a preset gesture detection database; Calculating a target gesture sensing distance according to a target gesture sensing distance calculation formula S=L-d, wherein S is the target gesture sensing distance, L is the distance between the main user and the range hood, and d is the pre-stored arm length; And/or the number of the groups of groups, And within the target gesture sensing distance, executing gesture detection operation in real time by utilizing the gesture detection module, wherein the gesture detection operation comprises the following steps: determining pre-stored gesture judgment parameters through a preset gesture detection database; and within the target gesture sensing distance, executing gesture detection operation in real time by utilizing the gesture detection module according to the gesture detection parameters.
4. The control method according to claim 3, wherein when a gesture is detected, executing the gesture corresponds to a preset smoke machine operation, further comprising: recording the gesture action; and after cooking is finished, updating the arm length and/or the gesture judgment parameters in the gesture detection database according to the recorded gesture.
5. The control method according to claim 4, wherein updating the arm length and/or the gesture determination parameter in the gesture detection database according to the recorded gesture action after cooking is completed, comprises: When the arm length corresponding to the gesture is inconsistent with the arm length in the gesture detection database, and/or when the gesture parameter corresponding to the gesture is inconsistent with the gesture judgment parameter in the gesture detection database, whether to update the prompt is performed; After an update instruction is acquired, the arm length in the gesture detection database is updated to be the arm length corresponding to the gesture action, and/or the gesture judgment parameter in the gesture detection database is updated to be the gesture parameter corresponding to the gesture action; And/or the number of the groups of groups, Before recording the gesture action, the method further comprises: And determining that the kitchen range is in a working state.
6. The control method according to claim 3, wherein after determining the pre-stored arm length by the preset gesture detection database, according to a target gesture sensing distance calculation formula s=l-d, before calculating the target gesture sensing distance, further comprising: Acquiring the fire power of a kitchen range; determining an arm length compensation value according to at least one of the stove firepower and the distance between the main user and the range hood, wherein the arm length compensation value is inversely related to the stove firepower and positively related to the distance between the main user and the range hood; and superposing the arm length compensation value into the pre-stored arm length to compensate.
7. The control method of claim 1, wherein the gesture detection module comprises at least two sets of gesture sensing circuits; and within the target gesture sensing distance, executing gesture detection operation in real time by utilizing the gesture detection module, wherein the gesture detection operation comprises the following steps: and detecting whether objects exist in sequence according to a preset sequence in preset time or not by utilizing the at least two gesture sensing circuits in the target gesture sensing distance.
8. The control method according to claim 7, wherein the gesture sensing circuit comprises a microprocessor (10), an infrared emitting circuit (20) and an infrared receiving circuit (30); the microprocessor (10) comprises an induction signal input end, a first control signal output end and at least two power supply voltage output ends; The infrared emission circuit (20) comprises a first current regulation unit (21), an infrared emission unit (22) and a switch unit (23), wherein the first current regulation unit (21) comprises at least two current regulation branches (210), the resistances of the current regulation branches (210) are different, one ends of the at least two current regulation branches (210) are electrically connected with the at least two power supply voltage output ends in a one-to-one correspondence manner, the other ends of the at least two current regulation branches are electrically connected with a first node, the infrared emission unit (22) and the switch unit (23) are connected in series between the first node and a fixed potential node, and the first control signal output end is electrically connected with the control end of the switch unit (23); Detecting whether objects exist in sequence according to a preset sequence in preset time or not by utilizing the at least two gesture sensing circuits in the target gesture sensing distance comprises the following steps: the power supply voltage output end for providing power supply voltage is switched to a target power supply voltage output end so that the microprocessors are in a preset sensing distance mode corresponding to the target gesture sensing distance, wherein the microprocessors are provided with a plurality of sensing distance modes, and under different sensing distance modes, the power supply voltage output ends for providing power supply voltage by the microprocessors are different, and currents passing through the infrared emission units are different, so that the carrier signals have different emission intensities; Outputting a first pulse width modulation signal with a first preset frequency through the first control signal output end so as to control the switch unit to be turned on and off according to the first preset frequency, and enabling the infrared emission unit to emit light and extinguish according to the first preset frequency and emit a carrier signal with the first preset frequency; detecting the carrier signal of the first preset frequency by using the infrared receiving circuit, generating an induction signal, and providing the induction signal to the microprocessor through the induction signal input end; And determining whether an object exists in a detection range corresponding to the current sensing distance mode by the microprocessor according to the sensing signal.
9. A range hood for performing the control method of the range hood according to any one of claims 1 to 8; The range hood comprises a gesture detection module and a human body induction module, wherein the induction distance of the gesture detection module is adjustable.
10. The control method of claim 9, wherein the body sensing module comprises a plurality of time-of-flight sensors, and/or, The gesture detection module comprises at least two groups of gesture sensing circuits; the gesture sensing circuit comprises a microprocessor (10), an infrared emission circuit (20) and an infrared receiving circuit (30); the microprocessor (10) comprises an induction signal input end, a first control signal output end and at least two power supply voltage output ends; The infrared emission circuit (20) comprises a first current regulation unit (21), an infrared emission unit (22) and a switch unit (23), wherein the first current regulation unit (21) comprises at least two current regulation branches (210), the resistances of the current regulation branches (210) are different, one ends of the at least two current regulation branches (210) are electrically connected with the at least two power supply voltage output ends in a one-to-one correspondence manner, the other ends of the at least two current regulation branches are electrically connected with a first node, the infrared emission unit (22) and the switch unit (23) are connected in series between the first node and a fixed potential node, and the first control signal output end is electrically connected with the control end of the switch unit (23); The microprocessor (10) is configured to output a first pulse width modulation signal with a first preset frequency through the first control signal output end so as to control the switch unit (23) to be turned on and off according to the first preset frequency, and the infrared emission unit (22) emits light and extinguishes according to the first preset frequency and emits a carrier signal with the first preset frequency; the microprocessor (10) is further configured to provide a supply voltage to at least one of the supply voltage outputs, the microprocessor (10) having a plurality of sensing distance modes, the supply voltage outputs of the microprocessor (10) providing supply voltages being different in different sensing distance modes, currents through the infrared emitting unit (22) being different so that the carrier signals have different emission intensities; the infrared receiving circuit (30) is configured to detect the carrier signal of the first preset frequency, generate an induction signal and provide the induction signal to the microprocessor (10) through the induction signal input end; the microprocessor (10) is further configured to determine whether an object is present in a detection range corresponding to the current sensing distance mode according to the sensing signal.

Description

Control method of range hood and range hood Technical Field The invention relates to the technical field of intelligent home, in particular to a control method of a range hood and the range hood. Background With the development of the times, the control modes of the range hood are more and more abundant, and the range hood with the function of waving hands induction is also widely popular in the market. When the user actually cooks, the hands are often stained with greasy dirt, and at the moment, the control panel of the cigarette machine or the mobile phone application program is inconvenient to click to control the cigarette machine. Through the hand waving sensing function, a user does not need to touch the cigarette machine, and the working mode of the cigarette machine can be adjusted only by waving hands remotely. However, the hand waving sensing function of the existing cigarette machine on the market has two problems, namely that the hand waving sensing function is limited in a fixed range (the maximum sensing distance is usually 15-30 cm), and the actual cooking scene is more complicated. Different kitchen types in the user's home, different user's heights, different cooking habits of the user can influence the hand waving distance of the user when actually cooking. The user cannot obtain the latest experience only by means of a fixed waving range, and the anti-interference capability of waving sensing is weak, so that the waving sensing module is easily influenced by infrared light in the environment on one hand, and the waving function is easily triggered by the user by mistake in the cooking process to influence the user experience on the other hand. Disclosure of Invention According to the control method of the range hood and the range hood, the target gesture sensing distance is automatically adjusted according to the distance between the main user and the range hood, so that the accuracy of the range hood in gesture motion detection of the user is improved, and the use experience of the user is improved. In a first aspect, the invention provides a control method of a range hood, which comprises a gesture detection module and a human body induction module, wherein the induction distance of the gesture detection module is adjustable; The control method comprises the following steps: Determining the distance between a main user in the space where the range hood is located and the range hood by using a human body sensing module; Determining a target gesture sensing distance according to the distance between the main user and the range hood; Executing gesture detection operation in real time by utilizing a gesture detection module within the target gesture sensing distance; and when the gesture motion is detected, executing the preset smoke machine operation corresponding to the gesture motion. Optionally, determining, by using the human body sensing module, a distance between a main user in a space where the range hood is located and the range hood, includes: detecting all users and positions of the users in the space of the range hood by using a human body induction module; Determining a user closest to or farthest from the range hood or a user carrying mobile equipment which is in mobile interconnection with the range hood as a main user; And determining the distance between the main user and the range hood according to the determined main user and the position thereof. Optionally, determining the target gesture sensing distance according to the distance between the main user and the range hood includes: determining the pre-stored arm length through a preset gesture detection database; Calculating a target gesture sensing distance according to a target gesture sensing distance calculation formula S=L-d, wherein S is the target gesture sensing distance, L is the distance between a main user and the range hood, and d is the length of a pre-stored arm; And/or the number of the groups of groups, And within the target gesture sensing distance, executing gesture detection operation in real time by using a gesture detection module, wherein the gesture detection operation comprises the following steps: determining pre-stored gesture judgment parameters through a preset gesture detection database; And within the target gesture sensing distance, according to the gesture detection parameters, executing gesture detection operation in real time by using the gesture detection module. Optionally, when the gesture is detected, executing the operation of the smoke machine corresponding to the preset gesture, and meanwhile, further including: recording gesture actions; After cooking is completed, according to the recorded gesture actions, the arm length and/or gesture judgment parameters in the gesture detection database are updated. Optionally, after cooking is completed, updating the arm length and/or the gesture determination parameters in the gesture detection database according to the recorded gesture actio