CN113883565A - Range hood control method and device and range hood - Google Patents
Range hood control method and device and range hood Download PDFInfo
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- CN113883565A CN113883565A CN202111274903.5A CN202111274903A CN113883565A CN 113883565 A CN113883565 A CN 113883565A CN 202111274903 A CN202111274903 A CN 202111274903A CN 113883565 A CN113883565 A CN 113883565A
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- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000000779 smoke Substances 0.000 claims description 128
- 230000002452 interceptive effect Effects 0.000 claims description 17
- 238000000605 extraction Methods 0.000 claims description 13
- 230000003993 interaction Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 8
- 238000005286 illumination Methods 0.000 description 7
- 230000001755 vocal effect Effects 0.000 description 5
- 238000010411 cooking Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 210000003128 head Anatomy 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 210000003928 nasal cavity Anatomy 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
Abstract
The invention provides a range hood control method, a range hood control device and a range hood, wherein a main controller of the range hood is connected with a camera on the range hood, and the method comprises the following steps: when the range hood is in a standby mode, extracting multiple frames of pictures from video streams collected by the camera according to a preset first time interval, and starting the range hood to enter a working mode when judging that each frame of picture comprises a human-shaped object. The invention can realize automatic control of the range hood and greatly improve the use experience of users.
Description
Technical Field
The invention relates to the technical field of range hoods, in particular to a range hood control method and device and a range hood.
Background
Nowadays, a range hood has become one of the essential household appliances in the life of residents. However, the range hood in the current market requires users to control through keys, such as the switch and air volume control of the range hood, and the range hood cannot be separated from manual control of people and automatically operates, so that the range hood is inconvenient for the users to use in the cooking process, and the use experience of the users is greatly reduced.
Disclosure of Invention
In view of the above, the present invention provides a range hood control method, a range hood control device and a range hood, so as to alleviate the above technical problems.
In a first aspect, an embodiment of the present invention provides a range hood control method, where the method is applied to a master controller in a range hood, the master controller is connected to a camera on the range hood, and the method includes: when the range hood is in a standby mode, extracting a plurality of frames of pictures from a video stream collected by a camera within a preset time period; judging whether each frame of picture comprises a humanoid object; if yes, starting the range hood to enter a working mode.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the step of determining whether each frame of picture includes a human-shaped object includes: extracting picture information contained in each frame of picture; matching the picture information with the pre-stored human figure characteristics; and if the matching is successful, determining that the picture comprises the humanoid object.
With reference to the first possible implementation manner of the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where before starting the range hood to enter the operating mode, the method further includes: extracting human face features from the human-shaped object; judging whether the face features are matched with pre-stored authorized face features or not; and if the matching is carried out, the step of starting the range hood to enter the working mode is executed.
With reference to the second possible implementation manner of the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the step of starting the range hood to enter the operating mode includes: generating a start signal; and sending the starting signal to one or more of an interactive panel, a lighting lamp and a fan of the range hood for starting.
With reference to the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the main controller is connected to a voice collector on the range hood, and the method further includes: if the range hood is in the working mode, acquiring a control instruction in real time; wherein, the control command includes: a gesture instruction or a voice instruction; and controlling the working state of the range hood according to the control command.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the step of obtaining the control instruction in real time includes: extracting each frame of picture in a video stream collected by a camera in real time; recognizing gesture features of the humanoid object based on the extracted each frame of picture; a gesture instruction corresponding to the gesture feature is determined.
With reference to the fifth possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, where a plurality of specific gesture features and gesture instructions corresponding to the specific gesture features in a one-to-one manner are stored in advance in a master controller; the step of determining the gesture instruction corresponding to the gesture feature comprises the following steps: matching the gesture features with a plurality of specific gesture features; and determining the gesture instruction corresponding to the specific gesture feature matched with the gesture feature as the gesture instruction corresponding to the gesture feature.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, where the step of obtaining the control instruction in real time includes: acquiring voice information through a voice acquisition device; extracting voiceprint features and keyword features included in the voice information; and if the voiceprint features are successfully matched with the pre-stored authorized voiceprint features, generating a voice instruction corresponding to the keyword features.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, wherein the step of controlling the operating state of the range hood according to the control command includes: if the control instruction is an illuminating lamp control instruction, the control instruction is sent to an illuminating lamp; and if the control instruction is a fan control instruction, sending the control instruction to the fan.
With reference to the first aspect, an embodiment of the present invention provides a ninth possible implementation manner of the first aspect, where the method further includes: if the range hood is in the working mode, extracting a first picture and a second picture from a video stream collected by a camera according to a preset time interval; respectively counting the number of first smoke pixel points and the number of second smoke pixel points in the first picture and the second picture; determining the smoke condition according to the number of the first smoke pixel points and the number of the second smoke pixel points; and controlling the fan to operate based on the smoke condition.
With reference to the ninth possible implementation manner of the first aspect, an embodiment of the present invention provides a tenth possible implementation manner of the first aspect, where the step of determining the smoke condition according to the number of the first smoke pixel points and the number of the second smoke pixel points includes: performing difference operation on the number of the second smoke pixel points and the number of the first smoke pixel points to obtain a smoke pixel point difference result; searching the smoke condition grade corresponding to the smoke pixel point difference value result in a pre-stored smoke condition table; the smoke condition table stores smoke condition grades and a smoke pixel point difference result threshold range corresponding to the smoke condition grades; the smoke condition is determined from the smoke condition level.
With reference to the tenth possible implementation manner of the first aspect, an embodiment of the present invention provides an eleventh possible implementation manner of the first aspect, wherein the step of controlling the operation of the fan based on the smoke condition includes: searching fan running power corresponding to the smoke condition grade in a pre-stored fan gear table; the fan gear table stores fan running power and smoke condition grades corresponding to the fan running power; and sending the fan operation power to a driving motor for driving the fan to operate so as to enable the driving motor to operate under the fan operation power.
In a second aspect, an embodiment of the present invention further provides a control device for a range hood, where the control device is applied to a main controller in the range hood, the main controller is connected to a camera on the range hood, and the control device includes: the extraction module is used for extracting a plurality of frames of pictures from the video stream collected by the camera according to a preset first time interval when the range hood is in a standby mode; the judging module is used for judging whether each frame of picture comprises a human-shaped object; and the starting module is used for starting the range hood to enter a working mode if the judgment result of the judging module is yes.
In a third aspect, an embodiment of the present invention further provides a range hood, where the range hood includes a smoke collection cavity, a main controller centralized inside the smoke collection cavity, and a camera, an interactive panel, an illuminating lamp, and a fan connected to the main controller, where the camera, the interactive panel, the illuminating lamp, and the fan are all connected to the main controller; the main controller is used for executing the range hood control method so as to control the interactive panel, the illuminating lamp and the fan.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a range hood control method, a range hood control device and a range hood, wherein when the range hood is in a standby mode, a plurality of frames of pictures are extracted from a video stream acquired by a camera according to a preset first time interval, and when each frame of picture is judged to comprise a human-shaped object, the range hood is started to enter a working mode, so that the range hood is automatically started, and the use experience of a user is greatly improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention;
fig. 2 is a flowchart of a range hood control method according to an embodiment of the present invention;
fig. 3 is a flowchart of another range hood control method according to an embodiment of the present invention;
fig. 4 is a flowchart of another range hood control method according to an embodiment of the present invention;
fig. 5 is a flowchart of another range hood control method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a range hood control device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another range hood control device provided in an embodiment of the present invention;
fig. 8 is a schematic structural diagram of another range hood control device provided in an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another control device of a range hood according to an embodiment of the present invention.
Icon:
1-a camera; 2-a front panel; 3-a master controller; 4-an interactive panel; 5-lighting lamp; 6, a fan; 7-voice collector; 8-smoke collecting cavity.
Detailed Description
To make the objects, 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, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the key functions of the range hood still need to be controlled by a user through keys, and the use of the range hood in the cooking process is inconvenient for the user.
In order to facilitate understanding of the embodiment, a detailed description is first given to a control method of a range hood disclosed in the embodiment of the present invention.
The range hood of the embodiment comprises a main controller and a camera, wherein a structural schematic diagram of the range hood is shown in fig. 1, the camera 1 is installed on the inner side below a smoke collection cavity 8 of the range hood and basically faces the position of a front panel 2, but is slightly inclined downwards, so that the visual angle of the camera can basically cover the whole kitchen range and the lower edge area of the front panel 2 of the range hood, the camera can effectively collect images of the whole kitchen range and the front of the kitchen range, and an oil-proof optical filter is attached to the outer part of a window where the camera is located, so that the pollution of oil stains to an optical lens can be well prevented; the main controller 3 can be arranged at the position of the front panel 2 and is connected with the camera through a flat cable; in this embodiment, the installation positions of the master controller and the camera are not limited.
Based on the above description, the present embodiment provides a range hood control method, which is applied to a master controller in a range hood, and referring to a flowchart of the range hood control method shown in fig. 2, the range hood control method includes the following steps:
step S202, when the range hood is in a standby mode, extracting a plurality of frames of pictures from a video stream collected by a camera within a preset time period;
when the range hood is in the standby mode, the main controller and the camera are in the electrified working state, and other electronic devices of the range hood, such as an illuminating lamp, a fan and the like, do not work substantially; the camera sends the collected video stream to the master controller in real time, the master controller extracts multiple frames of pictures from the video stream collected by the camera within a preset time period, for example, the master controller extracts 10 frames of pictures within each 3s of time period, and the length of the time period and the number of the pictures are not limited.
Step S204, judging whether each frame of picture comprises a human-shaped object;
and step S206, if yes, starting the range hood to enter a working mode.
Whether the pictures comprise the human-shaped objects or not refers to whether the pictures comprise people or not, when the main controller judges that the 10 extracted pictures all comprise the human-shaped objects or the number 8 of the pictures with the human-shaped objects in the 10 extracted pictures is higher than a set human-shaped picture number threshold value 6, each extracted picture comprises the human-shaped objects, at the moment, the range hood is started to enter a working mode from a standby mode, and the human-shaped picture number threshold value is not limited.
In practical use, after the range hood enters the working mode from the standby mode, if the main controller judges that each frame of picture does not include the human-shaped object from the plurality of frames of pictures extracted from the video stream within a set time period (for example, 1 minute), or the number of pictures with the human-shaped object is lower than a set human-shaped picture number threshold value, the main controller controls the range hood to enter the standby mode again. The process can enable the range hood to be maintained in a low-power-consumption standby state when a user forgets to turn off the range hood, so that energy conservation and environmental protection are realized.
According to the range hood control method provided by the embodiment of the invention, when the range hood is in the standby mode, multiple frames of pictures are extracted from the video stream acquired by the camera according to the preset first time interval, and when each frame of picture is judged to comprise the human-shaped object, the range hood is started to enter the working mode, so that the range hood is automatically started, and the use experience of a user is greatly improved.
The embodiment provides another range hood control method, which is realized on the basis of the embodiment; this embodiment focuses on a specific implementation of determining whether each frame of picture includes a human-shaped object. As shown in fig. 3, another flow chart of a range hood control method, the range hood control method in this embodiment includes the following steps:
step S302, when the range hood is in a standby mode, extracting a plurality of frames of pictures from a video stream collected by a camera within a preset time period;
step S304, extracting picture information contained in each frame of picture;
in this embodiment, the outline feature extraction or the skeleton feature extraction may be performed on the objects in the picture by using a conventional feature extraction method, such as an outline extraction method or a skeleton extraction method.
Step S306, matching the picture information with the pre-stored human figure characteristics;
step S308, if the matching is successful, determining that the picture comprises a humanoid object;
the human-shaped features comprise but are not limited to head features, trunk features and limb features, and the human-shaped features are stored in the storage unit of the main controller in advance; and matching the outline characteristics or the skeleton characteristics of the object extracted from the picture with the pre-stored human-shaped characteristics, wherein if the outline characteristics of the object comprise the characteristics of the head characteristics, the trunk characteristics, the four limbs characteristics and the like, or the skeleton characteristics of the object comprise the characteristics of the head characteristics, the trunk characteristics, the four limbs characteristics and the like, the picture information extracted from the picture is matched with the human-shaped characteristics, and the picture comprises the human-shaped object.
Step S310, extracting human face features from the human figure object;
step S312, judging whether the face features are matched with the prestored authorized face features;
in order to enhance the reliability of control, the storage unit of the main controller stores the authorized human face characteristics of authorized users in advance, so that the range hood can be automatically controlled by the authorized users, and the range hood cannot be automatically controlled by unauthorized users.
If so, executing step S314, otherwise, executing step S302;
after judging that the picture comprises the human-shaped object, further extracting the human face characteristics of the face of the human-shaped object in the picture, if the human face characteristics of the human-shaped object are the same as the stored authorized human face characteristics, or the matching degree of the human face characteristics and the stored authorized human face characteristics exceeds a preset matching degree threshold value, indicating that the human-shaped object in the picture is the human-shaped object of the authorized user, and then executing step S314; if the human face features of the human-shaped object are different from the stored authorized human face features, or if the matching degree of the human-shaped object and the stored authorized human face features is lower than a preset matching degree threshold value, it is indicated that the human-shaped object in the picture is a human-shaped object of an unauthorized user, the range hood cannot be started, and the step S302 is executed again.
And step S314, starting the range hood to enter a working mode.
The step of starting the range hood to enter the operating mode may specifically include the following steps a 1-a 2:
step A1, generating a starting signal;
and step A2, sending the starting signal to one or more of an interactive panel, a lighting lamp and a fan of the range hood for starting.
As shown in fig. 1, the range hood may further include an interaction panel 4 in communication connection with the main controller, a lighting lamp 5 and a fan 6, wherein the interaction panel 4 is used by a user to control the range hood conveniently, and generally, the interaction panel 4 and the main controller 3 are integrated and installed at a position of the front panel 2, and the lighting lamp 5 and the fan 6 are installed in the smoke collection cavity 8.
In this embodiment, after the master controller generates the start signal, the start signal may be sent to one or more of the interactive panel, the illuminating lamp, and the fan for starting according to actual needs; for example, when the master controller sends a starting signal to the interactive panel and the illuminating lamp to start, the manual function keys and the illuminating lamp arranged in the interactive panel can be lightened, so that a user can know the state of the current range hood, and the interaction between a person and a machine is enhanced.
According to the mode for starting the range hood to enter the working mode, firstly, the human-shaped object is determined from the picture extracted from the video stream, then, the human face features are extracted from the human-shaped object, and the range hood is started by determining the authorized user based on the human face features, so that the use of unauthorized users such as children or old people is effectively avoided, and the use safety and reliability of the range hood are further improved.
The embodiment provides another range hood control method, which is realized on the basis of the embodiment; mainly, the detailed description is made on the control of the operating state of the range hood, as shown in fig. 4, which is a flowchart of another control method of the range hood, the control method of the range hood in the embodiment includes the following steps:
step S402, when the range hood is in a standby mode, extracting multi-frame pictures from a video stream collected by a camera within a preset time period;
step S404, judging whether each frame of picture comprises a human-shaped object;
step S406, if yes, starting the range hood to enter a working mode;
step S408, acquiring a control instruction in real time; wherein, the control command includes: a gesture instruction or a voice instruction;
as shown in fig. 1, the range hood further includes a voice collector 7 installed in the smoke collection chamber 8 and connected to the main controller 3, and in this embodiment, when the control command is a voice command, the process of acquiring the voice command may specifically include the following steps B1-B3:
step B1, acquiring voice information through a voice collector;
the voice collector can be made of a voice sensor, and the voice collector 7 can collect voice information of a user in real time and send the collected voice information to the main controller.
Step B2, extracting the voiceprint features and the keyword features included in the voice information;
and step B3, if the voiceprint features are successfully matched with the pre-stored authorized voiceprint features, generating a voice command corresponding to the keyword features.
In the embodiment, only the voiceprint feature of the authorized user can control the range hood, and the voiceprint feature of the unauthorized user cannot control the range hood.
Because each person's vocal tract, oral cavity and nasal cavity have individual difference, reflect also have difference on the sound, therefore, can draw vocal print characteristic and keyword feature that the speech information included through the vocal print recognition technology, if the vocal print characteristic that the pronunciation collector gathered is the same with the authorized vocal print characteristic of storage, or, when the degree of matching of the two exceeds the degree of matching threshold that is preset, the speech information that the pronunciation collector gathered is the pronunciation of authorized user.
A voice instruction table is also stored in the storage unit of the main controller in advance, and specific keyword characteristics and voice instructions corresponding to the specific keyword characteristics are stored in the voice instruction table; for example, if the specific keyword feature is "illumination lamp on", the control instruction corresponding to the specific keyword feature is an illumination lamp on instruction, and if the specific keyword feature is "illumination lamp off", the control instruction corresponding to the specific keyword feature is an illumination lamp off instruction, the content stored in the voice instruction table may be set according to actual needs, and in this embodiment, the content stored in the voice instruction table is not limited.
When the voice information acquired by the voice acquisition device is the voice of the authorized user, the keyword features included in the voice information are matched with the specific keyword features in the voice instruction list one by one, and the voice instruction corresponding to the specific keyword features matched with the keyword features is determined as the voice instruction corresponding to the keyword features.
When the control instruction is a gesture instruction, the process of acquiring the gesture instruction may specifically include the following steps C1-C3:
step C1, extracting each frame of picture in the video stream collected by the camera in real time;
step C2, recognizing the gesture characteristics of the human-shaped object based on each frame of the extracted pictures;
and step C3, determining a gesture command corresponding to the gesture feature.
The storage unit of the main controller is also pre-stored with a plurality of specific gesture characteristics and gesture instructions corresponding to the specific gesture characteristics one by one; for example, if the specific gesture feature is 1, the control instruction corresponding to the specific gesture feature represents an illumination lamp lighting instruction, and if the specific keyword feature is 3, the control instruction corresponding to the specific gesture feature is an air volume adjusting instruction.
Matching the gesture features of the humanoid object with the specific gesture features stored in the storage unit; and determining the gesture instruction corresponding to the specific gesture feature matched with the gesture feature as the gesture instruction corresponding to the gesture feature.
And step S410, controlling the working state of the range hood according to the control command.
When the acquired gesture command or voice command is a lighting lamp control command, the control command can be sent to a lighting lamp so as to control the lighting lamp; for example, the illumination lamp may be controlled to be adjusted in brightness, turned on or off.
When the acquired gesture command or voice command is a fan control command, the control command can be sent to the fan to control the fan; for example, the fan can be controlled by adjusting the air volume, turning on or turning off the fan, and the like; the control of the range hood is not limited to the control of the lighting power and the fan, and the working states of other electronic devices of the range hood can be controlled according to gesture instructions or voice instructions according to user requirements in actual use.
According to the control method of the range hood, the collected video stream and the collected voice information are sent to the main controller through the camera and the voice collector, the main controller extracts the gesture features in the picture and the keyword features in the voice information, further the gesture command corresponding to the gesture features and the voice command corresponding to the keyword features are obtained, the working state of the range hood is controlled through the gesture command or the voice command, a user does not need to control the range hood through other means such as function keys on an interactive panel, the two hands of the user in the cooking process are removed, the use of the user is facilitated, and the use experience of the user is improved.
The embodiment provides another range hood control method, which is realized on the basis of the embodiment; this embodiment focuses on a specific implementation of controlling the operation of the wind turbine. As shown in fig. 5, another flow chart of a control method of a range hood, the control method of the range hood in the embodiment includes the following steps:
step S502, when the range hood is in a standby mode, extracting a plurality of frames of pictures from a video stream collected by a camera within a preset time period;
step S504, judge whether each frame picture includes the human-shaped object;
step S506, if yes, starting the range hood to enter a working mode;
step S508, extracting a first picture and a second picture from a video stream collected by a camera according to a preset time interval;
when the range hood is in a working mode, extracting a first picture and a second picture from a video stream according to a preset time interval (1s), for example, the extracted picture is the first picture when the time is 1s, the extracted picture is the second picture when the time is 2s, when the time is 3s, the 2s extracted picture is called the first picture, and the 3s extracted picture is the second picture; when the time is 4s, the picture extracted in the 3s is called a first picture, the picture extracted in the 4s is a second picture, and so on, and the description is omitted here.
Step S510, counting the number of first smoke pixel points and the number of second smoke pixel points in the first picture and the second picture respectively;
in this embodiment, two pictures at adjacent time intervals are taken as a group to perform statistics on the number of smoke pixel points, for example, a first picture at 1s and a second picture at 2s are taken as a group to perform statistics on the number of first smoke pixel points in the first picture and the number of second smoke pixel points in the second picture; then, the number of second smoke pixel points in the second picture is counted by taking the first picture in the time of 2s and the second picture in the time of 3s as a group; then, the first picture in the time of 3s and the second picture in the time of 4s are taken as a group to count the number of second smoke pixel points in the second picture; and so on, and will not be described in detail herein.
Step S512, determining the smoke condition according to the number of the first smoke pixel points and the number of the second smoke pixel points;
a smoke condition table is also stored in a storage unit of the main controller in advance, and smoke condition grades and a smoke pixel point difference result threshold range corresponding to the smoke condition grades are stored in the smoke condition table; for example, the range of the difference result threshold of the smoke pixel points is 5-10, and the corresponding smoke condition grade is one grade; the range of the difference result threshold of the smoke pixel points is 11-20, and the corresponding smoke condition grade is two levels; the range of the difference result threshold of the smoke pixel points is 21-30, and the corresponding smoke condition grade is three grades; the range of the difference result threshold of the smoke pixel points and the corresponding smoke condition grade can be set according to actual needs, and are not limited here.
Performing difference operation on the number of second smoke pixel points and the number of first smoke pixel points of each group of pictures to obtain a smoke pixel point difference result; searching the smoke condition grade corresponding to the smoke pixel point difference value result in a pre-stored smoke condition table; if the difference result of the smoke pixel points is within the range of 11-20 of the difference result threshold of the smoke pixel points, the smoke condition grade is two levels, if the difference result of the smoke pixel points is within the range of 21-30 of the difference result threshold of the smoke pixel points, the smoke condition grade is three levels, and the smoke condition is determined according to the smoke condition grade.
And step S514, controlling the fan to operate based on the smoke condition.
The storage unit of the main controller is also pre-stored with a fan gear table, and the fan gear table is stored with fan running power and smoke condition grade corresponding to the fan running power; for example, the fan operating power corresponding to the first-level smoke condition level is 30 watts, the fan operating power corresponding to the second-level smoke condition level is 50 watts, and the fan operating power corresponding to the third-level smoke condition level is 70 watts, and the smoke condition level and the corresponding fan operating power may be set according to actual needs, which is not limited herein.
Because the smoke condition grades are in one-to-one correspondence with the fan running power, the fan running power corresponding to the smoke condition grades can be searched through the fan gear table when the smoke condition grades are determined; and sending the fan operation power to a driving motor for driving the fan to operate so as to enable the driving motor to operate under the fan operation power.
According to the range hood control method provided by the embodiment, the smoke condition can be determined through the picture, and the fan operation power of the driving motor for driving the fan to operate is determined based on the smoke condition, so that the fan works at proper power and rotation speed according to the smoke condition, energy conservation and noise reduction are guaranteed, and meanwhile, a good smoke exhaust effect is achieved.
It should be noted that the above method embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
In actual use, besides the automatic control range hood, the range hood can be manually controlled, for example, a plurality of manual function keys with different functions, such as an on/off function key, a fan air volume adjusting function key and an illumination power on/off function key, are arranged on the interactive panel, the function keys can receive an operation instruction of a user and send the operation instruction to the master controller, and the master controller performs corresponding control on the range hood according to the operation instruction corresponding to the function keys; when a user clicks an illuminating lamp lighting function key, the main controller controls lighting electricity to be lighted according to the received illuminating lamp lighting operation instruction; the related manual function keys or buttons can refer to the implementation mode of the prior art, and therefore, the function setting and the number of the manual function keys are not limited.
Corresponding to the above method embodiment, the embodiment of the present invention provides a range hood control device, which is applied to a main controller in a range hood, the main controller is connected with a camera on the range hood, as shown in the schematic structural diagram of the range hood control device shown in fig. 6, the range hood control device includes:
the first extraction module 602 is configured to extract, when the range hood is in the standby mode, multiple frames of pictures from a video stream acquired by a camera according to a preset first time interval;
a first judging module 604, configured to judge whether each frame of picture includes a human-shaped object;
and the starting module 606 is used for starting the range hood to enter the working mode if the judgment result of the first judgment module is yes.
According to the control device of the range hood provided by the embodiment of the invention, when the range hood is in the standby mode, a plurality of frames of pictures are extracted from the video stream acquired by the camera according to the preset first time interval, and when each frame of picture is judged to comprise the human-shaped object, the range hood is started to enter the working mode, so that the range hood is automatically controlled, and the use experience of a user is greatly improved.
The first determining module 604 is further configured to extract picture information included in each frame of picture; matching the picture information with the pre-stored human figure characteristics; and if the matching is successful, determining that the picture comprises the humanoid object.
The embodiment of the present invention further provides another extractor hood control device, as shown in fig. 7, the structure schematic diagram of another extractor hood control device includes:
the first extraction module 702 is configured to extract multiple frames of pictures from a video stream acquired by a camera according to a preset first time interval when the range hood is in a standby mode;
a first judging module 704, configured to judge whether each frame of picture includes a human-shaped object;
a second extraction module 706, configured to extract facial features from the human-shaped object;
a second judging module 708, configured to judge whether the face features match pre-stored authorized face features;
and the starting module 710 is used for starting the range hood to enter the working mode if the judgment result of the second judgment module is yes.
The starting module is also used for generating a starting signal; and sending the starting signal to one or more of an interactive panel, a lighting lamp and a fan of the range hood for starting.
The embodiment of the invention also provides another range hood control device, wherein the main controller is connected with the voice collector on the range hood, and as shown in the structural schematic diagram of another range hood control device shown in fig. 8, the range hood control device comprises:
the first extraction module 802 is configured to extract multiple frames of pictures from a video stream acquired by a camera according to a preset first time interval when the range hood is in a standby mode;
a first judging module 804, configured to judge whether each frame of picture includes a human-shaped object;
the starting module 806 is configured to start the range hood to enter the working mode if the first determining module determines that the range hood is in the working mode;
an obtaining module 808, configured to obtain a control instruction in real time if the range hood is in the operating mode, where the control instruction includes: a gesture instruction or a voice instruction;
the first control module 810 is configured to control a working state of the range hood according to the control command.
The acquisition module is also used for extracting each frame of picture in the video stream acquired by the camera in real time; recognizing gesture features of the humanoid object based on the extracted each frame of picture; a gesture instruction corresponding to the gesture feature is determined.
The acquisition module is also used for pre-storing a plurality of specific gesture characteristics and gesture instructions corresponding to the specific gesture characteristics one by one in the main controller; the step of determining the gesture instruction corresponding to the gesture feature comprises the following steps: matching the gesture features with a plurality of specific gesture features; and determining the gesture instruction corresponding to the specific gesture feature matched with the gesture feature as the gesture instruction corresponding to the gesture feature.
The acquisition module is also used for acquiring voice information through the voice acquisition device; extracting voiceprint features and keyword features included in the voice information; and if the voiceprint features are successfully matched with the pre-stored authorized voiceprint features, generating a voice instruction corresponding to the keyword features.
The first control module is further configured to send the control instruction to the lighting lamp if the control instruction is a lighting lamp control instruction; and if the control instruction is a fan control instruction, sending the control instruction to the fan.
The embodiment of the present invention further provides another extractor hood control device, as shown in fig. 9, which is a schematic structural diagram of another extractor hood control device, and the extractor hood control device includes:
the first extraction module 902 is configured to extract, when the range hood is in the standby mode, multiple frames of pictures from a video stream acquired by a camera according to a preset first time interval;
a first judging module 904, configured to judge whether each frame of picture includes a human-shaped object;
the starting module 906 is used for starting the range hood to enter a working mode if the first judgment module judges that the result is yes;
a third extraction module 908, configured to extract, if the range hood is in the operating mode, a first picture and a second picture from the video stream acquired by the camera according to a preset time interval;
a counting module 910, configured to count the number of first smoke pixel points and the number of second smoke pixel points included in the first picture and the second picture, respectively;
a determining module 912, configured to determine a smoke condition according to the number of the first smoke pixel points and the number of the second smoke pixel points;
a second control module 914 for controlling fan operation based on the smoke condition.
The determining module is further configured to perform difference operation on the number of the second smoke pixel points and the number of the first smoke pixel points to obtain a smoke pixel point difference result; searching the smoke condition grade corresponding to the smoke pixel point difference value result in a pre-stored smoke condition table; the smoke condition table stores smoke condition grades and a smoke pixel point difference result threshold range corresponding to the smoke condition grades; the smoke condition is determined from the smoke condition level.
The second control module is further configured to search a fan operating power corresponding to the smoke condition level in a pre-stored fan gear table; the fan gear table stores fan running power and smoke condition grades corresponding to the fan running power; and sending the fan operation power to a driving motor for driving the fan to operate so as to enable the driving motor to operate under the fan operation power.
The range hood control device provided by the embodiment of the invention has the same technical characteristics as the range hood control method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
The embodiment of the invention also provides a range hood, as shown in fig. 1, the range hood comprises a smoke collection cavity 8, a main controller 3 centralized in the smoke collection cavity 8, and a camera 1, an interactive panel 4, a lighting lamp 5 and a fan 6 which are connected with the main controller, wherein the camera, the interactive panel, the lighting lamp and the fan are all connected with the main controller; the main controller is used for executing the range hood control method so as to control the interactive panel, the illuminating lamp and the fan.
As shown in fig. 1, the range hood can be provided with a voice collector 7 according to actual needs in addition to the main controller 3, the camera 1, the interactive panel 4, the illuminating lamp 5 and the fan 6, so as to realize a voice control function.
In addition, the range hood further comprises other electronic components such as an external power supply, and the specific implementation mode of the range hood can be realized by referring to the related technology, which is not described herein again.
According to the range hood provided by the embodiment of the invention, the collected video stream and the voice information are sent to the main controller through the camera and the voice collector, and the control instruction is obtained based on the analysis of the picture and the voice information in the video stream, so that the range hood is automatically controlled, and the use experience of a user is greatly improved.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the range hood and the device described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that the following embodiments are merely illustrative of the present invention, and not restrictive, and the scope of the present invention is not limited thereto: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (14)
1. A control method of a range hood is characterized in that the method is applied to a main controller in the range hood, the main controller is connected with a camera on the range hood, and the method comprises the following steps:
when the range hood is in a standby mode, extracting a plurality of frames of pictures from the video stream collected by the camera within a preset time period;
judging whether each frame of the picture comprises a humanoid object;
if yes, starting the range hood to enter a working mode.
2. The control method of the range hood according to claim 1, wherein the step of determining whether each frame of the picture includes a human-shaped object comprises:
extracting picture information contained in each frame of picture;
matching the picture information with a pre-stored human-shaped feature;
and if the matching is successful, determining that the picture comprises the humanoid object.
3. The range hood control method of claim 2, wherein before starting the range hood to enter the operating mode, the method further comprises:
extracting human face features from the human-shaped object;
judging whether the face features are matched with pre-stored authorized face features or not;
and if the two signals are matched, executing the step of starting the range hood to enter the working mode.
4. The range hood control method of claim 3, wherein the step of starting the range hood to enter the operating mode comprises:
generating a start signal;
and sending the starting signal to one or more of an interactive panel, a lighting lamp and a fan of the range hood for starting.
5. The control method of the range hood according to claim 1, wherein the master controller is connected with a voice collector on the range hood, and the method further comprises:
if the range hood is in the working mode, acquiring a control instruction in real time; wherein the control instructions include: a gesture instruction or a voice instruction;
and controlling the working state of the range hood according to the control command.
6. The control method of the range hood according to claim 5, wherein the step of obtaining the control command in real time comprises:
extracting each frame of picture in the video stream collected by the camera in real time;
recognizing gesture features of the humanoid object based on the extracted each frame of the picture;
determining a gesture instruction corresponding to the gesture feature.
7. The range hood control method according to claim 6, wherein the master controller pre-stores a plurality of specific gesture features and gesture instructions corresponding to the specific gesture features one to one;
the step of determining a gesture instruction corresponding to the gesture feature comprises:
matching the gesture feature with a plurality of the particular gesture features;
determining a gesture instruction corresponding to a particular gesture feature that matches the gesture feature as the gesture instruction corresponding to the gesture feature.
8. The control method of the range hood according to claim 5, wherein the step of obtaining the control command in real time comprises:
acquiring voice information through the voice collector;
extracting voiceprint features and keyword features included in the voice information;
and if the voiceprint features are successfully matched with the pre-stored authorized voiceprint features, generating a voice instruction corresponding to the keyword features.
9. The range hood control method according to claim 5, wherein the step of controlling the operating state of the range hood according to the control command comprises:
if the control instruction is an illuminating lamp control instruction, sending the control instruction to an illuminating lamp;
and if the control instruction is a fan control instruction, sending the control instruction to the fan.
10. The range hood control method of claim 1, further comprising:
if the range hood is in the working mode, extracting a first picture and a second picture from the video stream collected by the camera according to a preset time interval;
respectively counting the number of first smoke pixel points and the number of second smoke pixel points in the first picture and the second picture;
determining the smoke condition according to the number of the first smoke pixel points and the number of the second smoke pixel points;
controlling fan operation based on the smoke condition.
11. The range hood control method of claim 10, wherein the step of determining the smoke condition based on the number of first smoke pixels and the number of second smoke pixels comprises:
performing difference operation on the number of the second smoke pixel points and the number of the first smoke pixel points to obtain a smoke pixel point difference result;
searching a pre-stored smoke condition table for the smoke condition grade corresponding to the smoke pixel point difference result; the smoke condition table stores the smoke condition grade and a smoke pixel point difference result threshold range corresponding to the smoke condition grade;
determining the smoke condition based on the smoke condition level.
12. The range hood control method of claim 11, wherein the step of controlling the operation of the fan based on the smoke condition comprises:
searching fan operating power corresponding to the smoke condition grade in a pre-stored fan gear table; the fan gear table stores fan running power and smoke condition grades corresponding to the fan running power;
and sending the fan running power to a driving motor for driving the fan to run so as to enable the driving motor to run under the fan running power.
13. The utility model provides a range hood controlling means, its characterized in that, the master controller of device in being applied to range hood, the master controller with camera on the range hood is connected, the device includes:
the extraction module is used for extracting a plurality of frames of pictures from the video stream collected by the camera according to a preset first time interval when the range hood is in a standby mode;
the judging module is used for judging whether each frame of the picture comprises a human-shaped object;
and the starting module is used for starting the range hood to enter a working mode if the judgment result of the judging module is yes.
14. A range hood is characterized by comprising a smoke collection cavity, a main controller centralized in the smoke collection cavity, a camera, an interaction panel, a lighting lamp and a fan, wherein the camera, the interaction panel, the lighting lamp and the fan are connected with the main controller;
the main controller is used for executing the range hood control method according to any one of claims 1 to 12, so as to control the interaction panel, the illuminating lamp and the fan.
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