CN112228928B - Range hood operation control method and range hood - Google Patents
Range hood operation control method and range hood Download PDFInfo
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- CN112228928B CN112228928B CN202010921261.2A CN202010921261A CN112228928B CN 112228928 B CN112228928 B CN 112228928B CN 202010921261 A CN202010921261 A CN 202010921261A CN 112228928 B CN112228928 B CN 112228928B
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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
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Abstract
The invention relates to an operation control method of a range hood and the range hood, wherein the range hood comprises a body, a fan assembly is arranged in the body, and the range hood is characterized in that: after a fan assembly of the range hood is started, the range hood is operated and controlled by the following method: step 1, a fan assembly operates at a preset fixed gear; step 2, respectively acquiring a first image and a second image; step 3, analyzing and processing the first image and the second image, and judging whether the reason of the picture shaking of the first image and the second image is due to a pot tossing phenomenon above the left furnace end or/and the right furnace end or due to a machine body shaking phenomenon, if the picture shaking phenomenon is caused by the pot tossing phenomenon, the running gear of the fan assembly is increased; and if the vibration is caused by the shaking of the machine body, keeping the running gear of the fan assembly unchanged. Compared with the prior art, the method has the advantage that the method is more accurate than the traditional operation control mode.
Description
Technical Field
The invention relates to a range hood operation control method and a range hood.
Background
The range hood is an electrical appliance necessary for people to cook and absorb oil smoke in daily life, if the range hood is not maintained and cleaned in time after being used for a period of time, the impeller can be unbalanced, and the vibration of the whole range hood is aggravated when the impeller is unbalanced. The existing range hood with the smoke sensor for identifying the oil smoke concentration so as to adjust the rotating speed of the fan is characterized in that the smoke sensor can only detect the state value of the oil smoke after rising, and the adjusting control mode has hysteresis and single function.
Disclosure of Invention
The invention aims to solve the primary technical problem of providing a range hood operation control method capable of distinguishing the shaking phenomenon and the pot tossing phenomenon of a machine body so as to adjust the operation gear of a fan in the prior art.
The invention further aims to solve the technical problem of providing the range hood which can distinguish the shaking and pot shaking phenomena of the machine body during operation so as to adjust the operation gear of the fan.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood's operation control method, wherein range hood includes the organism, is equipped with fan subassembly in the organism, its characterized in that: after a fan assembly of the range hood is started, the range hood is operated and controlled by the following method:
step 1, a fan assembly operates at a preset fixed gear;
step 2, respectively obtaining a first image of an area where a left burner of the stove is located and a second image of an area where a right burner of the stove is located;
step 3, analyzing and processing the first image and the second image, judging whether the reason of the picture shaking of the first image and the second image is due to a pot flipping phenomenon existing above the left furnace end or/and the right furnace end or due to a shaking phenomenon of the machine body, and if the reason is that the picture shaking of the first image or/and the second image occurs due to the pot flipping phenomenon existing above the left furnace end or/and the right furnace end, improving the operation gear of the fan assembly; and if the first image or/and the second image has/have picture shake due to the body shake phenomenon, keeping the operation gear of the fan assembly unchanged.
There are several methods for acquiring the first image and the second image, and as a better implementation scheme: the first camera is arranged on the machine body and can acquire a first image of an area where a left burner of the stove is located; the machine body is provided with a second camera which can acquire a second image of an area where a right burner of the stove is located; in the step 3, the first image and the second image are analyzed and processed by the following method:
step 3-1, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-2, respectively calculating the maximum jitter displacement when picture jitter appears in the first image and the maximum jitter displacement when picture jitter appears in the second image, and if the maximum jitter displacement appearing in the first image and the maximum jitter displacement appearing in the second image are both smaller than a preset value, waiting for a preset time and returning to the step 2; if at least one of the jitter displacement amount appearing in the first image and the jitter displacement amount appearing in the second image is larger than or equal to a preset value, firstly increasing the running gear of the fan assembly, and then entering the step 3-3;
3-3, respectively calculating the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the first image and the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the second image, if the shaking directions of the first image and the second image are the same, judging that the picture shaking occurs in the first image and the second image due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the fan assembly is improved; if the shaking directions of the left furnace end and the right furnace end are different, the first image or/and the second image is judged to have picture shaking due to the pot tossing phenomenon above the left furnace end or/and the right furnace end, at the moment, the operation gear of the rear fan is kept to be increased, and the step 2 is returned.
Another implementation scheme for better acquiring the first image and the second image is as follows: the machine body is provided with a first camera with an automatic focusing function, and the first camera can acquire a first image of an area where a left burner of the stove is located; the machine body is provided with a second camera with an automatic focusing function, and the second camera can acquire a second image of an area where a right burner of the stove is located; in the step 3, the first image and the second image are analyzed and processed by the following method:
step 3-a, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-b, respectively obtaining the maximum value of the single zoom ratio appearing during focusing in the first image and the maximum value of the single zoom ratio appearing during focusing in the second image, and if the maximum values of the single zoom ratios of the first image and the second image are smaller than the preset zoom ratio, waiting for the preset time and returning to the step 2; if at least one of the maximum values of the single scaling of the fan assembly and the fan assembly is larger than or equal to the preset scaling, firstly increasing the running gear of the fan assembly, and then entering the step 3-c;
step 3-c, respectively obtaining the focusing times appearing in the first image and the focusing times appearing in the second image, dividing the numerical value with the larger times of the two obtained focusing times by the numerical value with the smaller times, marking the result as A, judging A and a preset parameter K, if A is less than or equal to K, judging that the focusing times appearing in the first image are close to the focusing times appearing in the second image, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the increase; if A is larger than K, judging that the first image or/and the second image has frame jitter due to a pot tossing phenomenon above the left furnace end or/and the right furnace end, keeping increasing the rear fan operation gear at the moment, and returning to the step 2.
Another implementation scheme for better acquiring the first image and the second image is as follows: be equipped with on the organism and acquire the wide angle camera including the regional and including the regional of cooking utensils right side furnace end place of cooking utensils left side furnace end simultaneously, cut apart the image of wide angle camera collection, cut apart into the first image including the regional of cooking utensils left side furnace end place to and including the regional second image of cooking utensils right side furnace end place, in step 3, carry out analysis processes to first image and second image through following method:
step 3-A, respectively obtaining the zooming amount of the first image at two different moments before and after the first image and the zooming amount of the second image corresponding to the two moments;
step 3-B, if the zooming amount of the first image at the front and back different moments and the zooming amount of the second image at the corresponding two moments are both smaller than a preset zooming amount, waiting for a preset time, and returning to the step 2; if at least one of the zoom amount of the first image at the front and the rear different moments and the zoom amount of the second image corresponding to the two moments is larger than or equal to the preset zoom amount, firstly increasing the running gear of the fan assembly, and then entering the step 3-C;
step 3-C, respectively obtaining the zooming direction of the first image at the front and the back different moments and the zooming direction of the second image corresponding to the two moments, if the zooming direction of the first image at the front and the back different moments is the same as the zooming direction of the second image corresponding to the two moments, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before being improved; if the scaling directions of the left furnace end and the right furnace end are different, the situation that the first image or/and the second image has picture shake due to the fact that a pot tilting phenomenon exists above the left furnace end or/and the right furnace end is judged, at the moment, the operation gear of the rear fan is kept to be increased, and the step 2 is returned.
The technical scheme adopted by the invention for solving the further technical problems is as follows: the utility model provides a range hood, includes the organism, is equipped with the fan subassembly in the organism, is equipped with the image acquisition device that can gather the first image including the regional first image in cooking utensils left side furnace end place and the second image including the regional cooking utensils right side furnace end place on the organism, its characterized in that: after a fan assembly of the range hood is started, the range hood is operated and controlled by any one of the methods.
Compared with the prior art, the invention has the advantages that: by analyzing the images within the range of the kitchen range, the image jitter is judged to be caused by the overall shaking of the range hood due to the unbalanced impeller or other factors, or caused by the pot tilting phenomenon above the left burner or/and the right burner, so as to distinguish whether the operation gear of the fan needs to be adjusted, and the operation control mode is more accurate than the traditional operation control mode.
Drawings
Fig. 1 is a schematic structural diagram of a range hood and a corresponding range in an embodiment of the present invention.
Fig. 2 is a flowchart illustrating operation control of the range hood after the fan assembly is started according to the first embodiment of the present invention.
Fig. 3 is a flowchart illustrating operation control of the range hood after the fan assembly is started according to the second embodiment of the present invention.
Fig. 4 is a schematic structural view of a range hood and a corresponding range in the third embodiment of the present invention.
Fig. 5 is a flowchart illustrating operation control of the range hood after the fan assembly is started according to the third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example one
As shown in fig. 1, a range hood comprises a body 1, a fan assembly (not shown in the figure) is arranged in the body 1, and a first camera 2 is arranged on the body 1 and can acquire a first image of an area where a left burner of a kitchen range is located; the machine body is provided with a second camera 3 which can acquire a second image of an area where a right burner of the stove is located; after a fan assembly of the range hood is started, the range hood performs operation control by the following method, which is shown in fig. 2:
step 1, a fan assembly operates at a preset fixed gear;
step 2, respectively obtaining a first image of an area where a left burner of the stove is located and a second image of an area where a right burner of the stove is located;
step 3, analyzing and processing the first image and the second image, and judging whether the reason of the picture shaking of the first image and the second image is caused by a pot tossing phenomenon above the left furnace end or/and the right furnace end or caused by a machine body shaking phenomenon, wherein the specific mode is as follows:
step 3-1, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-2, respectively calculating the maximum jitter displacement when picture jitter appears in the first image and the maximum jitter displacement when picture jitter appears in the second image, and if the maximum jitter displacement appearing in the first image and the maximum jitter displacement appearing in the second image are both smaller than a preset value, waiting for a preset time and returning to the step 2; if at least one of the jitter displacement amount appearing in the first image and the jitter displacement amount appearing in the second image is larger than or equal to a preset value, firstly increasing the running gear of the fan assembly, and then entering the step 3-3;
3-3, respectively calculating the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the first image and the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the second image, if the shaking directions of the first image and the second image are the same, judging that the picture shaking occurs in the first image and the second image due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the fan assembly is improved; if the shaking directions of the left furnace end and the right furnace end are different, the first image or/and the second image is judged to have picture shaking due to the pot tossing phenomenon above the left furnace end or/and the right furnace end, at the moment, the operation gear of the rear fan is kept to be increased, and the step 2 is returned.
Example two
Different from the first embodiment, the first camera and the second camera are both cameras with an automatic focusing function. In step 3, the first image and the second image are analyzed and processed by the following method, as shown in fig. 3:
step 3-a, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-b, respectively obtaining the maximum value of the single zoom ratio appearing during focusing in the first image and the maximum value of the single zoom ratio appearing during focusing in the second image, and if the maximum values of the single zoom ratios of the first image and the second image are smaller than the preset zoom ratio, waiting for the preset time and returning to the step 2; if at least one of the maximum values of the single scaling of the fan assembly and the fan assembly is larger than or equal to the preset scaling, firstly increasing the running gear of the fan assembly, and then entering the step 3-c;
step 3-c, respectively obtaining the focusing times appearing in the first image and the focusing times appearing in the second image, dividing the numerical value with the larger times of the two obtained focusing times by the numerical value with the smaller times, marking the result as A, judging A and a preset parameter K, if A is less than or equal to K, judging that the focusing times appearing in the first image are close to the focusing times appearing in the second image, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the increase; if A is larger than K, judging that the first image or/and the second image has frame jitter due to a pot tossing phenomenon above the left furnace end or/and the right furnace end, keeping increasing the rear fan operation gear at the moment, and returning to the step 2.
EXAMPLE III
Different from the first embodiment, the wide-angle camera 4 capable of simultaneously acquiring the area including the left burner of the cooker and the area including the right burner of the cooker is arranged on the machine body, as shown in fig. 4, the image acquired by the wide-angle camera is divided into a first image including the area including the left burner of the cooker and a second image including the area including the right burner of the cooker, in the step 3, the first image and the second image are analyzed and processed by the following method, as shown in fig. 5:
step 3-A, respectively obtaining the zooming amount of the first image at two different moments before and after the first image and the zooming amount of the second image corresponding to the two moments;
step 3-B, if the zooming amount of the first image at the front and back different moments and the zooming amount of the second image at the corresponding two moments are both smaller than a preset zooming amount, waiting for a preset time, and returning to the step 2; if at least one of the zoom amount of the first image at the front and the rear different moments and the zoom amount of the second image corresponding to the two moments is larger than or equal to the preset zoom amount, firstly increasing the running gear of the fan assembly, and then entering the step 3-C;
step 3-C, respectively obtaining the zooming direction of the first image at the front and the back different moments and the zooming direction of the second image corresponding to the two moments, if the zooming direction of the first image at the front and the back different moments is the same as the zooming direction of the second image corresponding to the two moments, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before being improved; if the scaling directions of the left furnace end and the right furnace end are different, the situation that the first image or/and the second image has picture shake due to the fact that a pot tilting phenomenon exists above the left furnace end or/and the right furnace end is judged, at the moment, the operation gear of the rear fan is kept to be increased, and the step 2 is returned.
Claims (2)
1. The utility model provides a range hood's operation control method, wherein range hood includes the organism, is equipped with fan subassembly in the organism, its characterized in that: after a fan assembly of the range hood is started, the range hood is operated and controlled by the following method:
step 1, a fan assembly operates at a preset fixed gear;
step 2, respectively obtaining a first image of an area where a left burner of the stove is located and a second image of an area where a right burner of the stove is located;
step 3, analyzing and processing the first image and the second image, judging whether the reason of the picture shaking of the first image and the second image is due to a pot flipping phenomenon existing above the left furnace end or/and the right furnace end or due to a shaking phenomenon of the machine body, and if the reason is that the picture shaking of the first image or/and the second image occurs due to the pot flipping phenomenon existing above the left furnace end or/and the right furnace end, improving the operation gear of the fan assembly; if the first image or/and the second image has/have picture shake due to the body shake phenomenon, keeping the running gear of the fan assembly unchanged;
in the step 2, the first image and the second image are obtained by any one of the following three methods:
the first mode is as follows: the first camera is arranged on the machine body and can acquire a first image of an area where a left burner of the stove is located; the machine body is provided with a second camera which can acquire a second image of an area where a right burner of the stove is located;
the second mode is as follows: the machine body is provided with a first camera with an automatic focusing function, and the first camera can acquire a first image of an area where a left burner of the stove is located; the machine body is provided with a second camera with an automatic focusing function, and the second camera can acquire a second image of an area where a right burner of the stove is located;
the third mode is as follows: the machine body is provided with a wide-angle camera which can simultaneously acquire an area including a left stove head of the stove and an area including a right stove head of the stove, and divides an image acquired by the wide-angle camera into a first image including the area including the left stove head of the stove and a second image including the area including the right stove head of the stove;
if the first image and the second image are obtained in the first mode in step 2, in step 3, the first image and the second image are analyzed and processed by the following method:
step 3-1, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-2, respectively calculating the maximum jitter displacement when picture jitter appears in the first image and the maximum jitter displacement when picture jitter appears in the second image, and if the maximum jitter displacement appearing in the first image and the maximum jitter displacement appearing in the second image are both smaller than a preset value, waiting for a preset time and returning to the step 2; if at least one of the jitter displacement amount appearing in the first image and the jitter displacement amount appearing in the second image is larger than or equal to a preset value, firstly increasing the running gear of the fan assembly, and then entering the step 3-3;
3-3, respectively calculating the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the first image and the shaking direction corresponding to the maximum shaking displacement when the picture shaking occurs in the second image, if the shaking directions of the first image and the second image are the same, judging that the picture shaking occurs in the first image and the second image due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the fan assembly is improved; if the shaking directions of the left furnace end and the right furnace end are different, judging that the first image or/and the second image has/have picture shaking due to the pot tilting phenomenon above the left furnace end or/and the right furnace end, keeping increasing the running gear of the rear fan at the moment, and returning to the step 2;
if the first image and the second image are obtained in the second way in step 2, in step 3, the first image and the second image are analyzed and processed by the following method:
step 3-a, simultaneously acquiring a first image acquired by a first camera and a second image acquired by a second camera;
step 3-b, respectively obtaining the maximum value of the single zoom ratio appearing during focusing in the first image and the maximum value of the single zoom ratio appearing during focusing in the second image, and if the maximum values of the single zoom ratios of the first image and the second image are smaller than the preset zoom ratio, waiting for the preset time and returning to the step 2; if at least one of the maximum values of the single scaling of the fan assembly and the fan assembly is larger than or equal to the preset scaling, firstly increasing the running gear of the fan assembly, and then entering the step 3-c;
step 3-c, respectively obtaining the focusing times appearing in the first image and the focusing times appearing in the second image, dividing the numerical value with the larger times of the two obtained focusing times by the numerical value with the smaller times, marking the result as A, judging A and a preset parameter K, if A is less than or equal to K, judging that the focusing times appearing in the first image are close to the focusing times appearing in the second image, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before the increase; if A is larger than K, judging that the first image or/and the second image has frame jitter due to a pot tossing phenomenon above the left furnace end or/and the right furnace end, keeping increasing the running gear of the rear fan at the moment, and returning to the step 2; if the first image and the second image are obtained in the third way in step 2, in step 3, the first image and the second image are analyzed and processed by the following method:
step 3-A, respectively obtaining the zooming amount of the first image at two different moments before and after the first image and the zooming amount of the second image corresponding to the two moments;
step 3-B, if the zooming amount of the first image at the front and back different moments and the zooming amount of the second image at the corresponding two moments are both smaller than a preset zooming amount, waiting for a preset time, and returning to the step 2; if at least one of the zoom amount of the first image at the front and the rear different moments and the zoom amount of the second image corresponding to the two moments is larger than or equal to the preset zoom amount, firstly increasing the running gear of the fan assembly, and then entering the step 3-C;
step 3-C, respectively obtaining the zooming direction of the first image at the front and the back different moments and the zooming direction of the second image corresponding to the two moments, if the zooming direction of the first image at the front and the back different moments is the same as the zooming direction of the second image corresponding to the two moments, judging that the first image and the second image have image shake due to the shaking phenomenon of the machine body, and at the moment, restoring the running gear of the fan assembly to the running gear before being improved; if the scaling directions of the left furnace end and the right furnace end are different, the situation that the first image or/and the second image has picture shake due to the fact that a pot tilting phenomenon exists above the left furnace end or/and the right furnace end is judged, at the moment, the operation gear of the rear fan is kept to be increased, and the step 2 is returned.
2. The utility model provides a range hood, includes the organism, is equipped with the fan subassembly in the organism, is equipped with the image acquisition device that can gather the first image including the regional first image in cooking utensils left side furnace end place and the second image including the regional cooking utensils right side furnace end place on the organism, its characterized in that: when a fan assembly of a range hood is started, the range hood performs operation control by the method according to claim 1.
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| CN110500624A (en) * | 2019-07-10 | 2019-11-26 | 宁波方太厨具有限公司 | A kind of central flue system and its target air volume control method |
| CN110529896A (en) * | 2019-08-09 | 2019-12-03 | 杭州九阳小家电有限公司 | A kind of antidote and kitchen ventilator of kitchen ventilator Smoke Detection |
| CN111322648A (en) * | 2020-02-27 | 2020-06-23 | 宁波方太厨具有限公司 | Cooking device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500624A (en) * | 2019-07-10 | 2019-11-26 | 宁波方太厨具有限公司 | A kind of central flue system and its target air volume control method |
| CN110529896A (en) * | 2019-08-09 | 2019-12-03 | 杭州九阳小家电有限公司 | A kind of antidote and kitchen ventilator of kitchen ventilator Smoke Detection |
| CN111322648A (en) * | 2020-02-27 | 2020-06-23 | 宁波方太厨具有限公司 | Cooking device and control method thereof |
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