CN113154489A - Range hood, control method and device thereof and computer readable storage medium - Google Patents
Range hood, control method and device thereof and computer readable storage medium Download PDFInfo
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- CN113154489A CN113154489A CN202110321152.1A CN202110321152A CN113154489A CN 113154489 A CN113154489 A CN 113154489A CN 202110321152 A CN202110321152 A CN 202110321152A CN 113154489 A CN113154489 A CN 113154489A
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- range hood
- oil smoke
- noise
- preset
- fan
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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 embodiment of the invention discloses a range hood, a control method and a control device thereof, and a computer readable storage medium, wherein the range hood comprises a fan and an image acquisition module, and the control method comprises the following steps: detecting the noise of the range hood; if the noise of the range hood is larger than a preset noise threshold value, triggering an image acquisition module to start; judging whether the oil smoke concentration is greater than a preset concentration threshold value or not according to the oil smoke image acquired by the image acquisition module; and if the oil smoke concentration is greater than the preset concentration threshold value, the rotating speed of the fan is increased. In the embodiment of the invention, whether the noise of the range hood is larger than the preset noise threshold value is used as a switching-on/off instruction of the image acquisition module, and the image acquisition module is triggered to be switched on again, so that the power consumption of the range hood can be reduced; the control device judges whether the oil smoke concentration is greater than a preset concentration threshold value according to the oil smoke image acquired by the image acquisition module, and accelerates smoke discharge by increasing the rotating speed of the fan when the oil smoke concentration is large, so that good kitchen environment and health of a user are guaranteed.
Description
Technical Field
The embodiment of the invention relates to the technical field of kitchen appliances, in particular to a range hood, a control method and a control device thereof and a computer readable storage medium.
Background
The lampblack absorber is installed in kitchen range upper portion or lateral part, and the operation process of current lampblack absorber makes the kitchen range top certain space within range form the negative pressure zone for the high-speed rotation of fan, inhales indoor oil smoke gas inside the lampblack absorber, and oil smoke gas is oil and flue gas through the purification separation, and oil is dripped and is collected the oil cup, and the flue gas is discharged along the flue.
The range hood has a set gear, and in the actual use process, due to the existence of loads such as resistance of a common flue and the like, the problems that the actual air volume of a product is different, the smoke exhaust effect is poor, the noise is high and the like exist under different use environments, and the use of a user is influenced are caused.
Disclosure of Invention
The embodiment of the invention provides a range hood, a control method and a control device of the range hood and a computer readable storage medium, and aims to solve the problem that an existing range hood is poor in smoke exhaust effect.
The embodiment of the invention provides a control method of a range hood, wherein the range hood comprises a fan and an image acquisition module, and the control method comprises the following steps:
detecting the noise of the range hood;
if the noise of the range hood is larger than a preset noise threshold value, triggering the image acquisition module to be started;
judging whether the oil smoke concentration is greater than a preset concentration threshold value or not according to the oil smoke image acquired by the image acquisition module;
and if the oil smoke concentration is greater than the preset concentration threshold value, the rotating speed of the fan is increased.
Based on the same invention concept, the embodiment of the invention also provides a control device of the range hood, the range hood comprises a fan and an image acquisition module, and the control device comprises:
the detection module is used for detecting the noise of the range hood;
the triggering module is used for triggering the image acquisition module to be started when the noise of the range hood is greater than a preset noise threshold value;
and the control module is used for judging whether the oil smoke concentration is greater than a preset concentration threshold value according to the oil smoke image acquired by the image acquisition module, and if the oil smoke concentration is greater than the preset concentration threshold value, the rotating speed of the fan is increased.
Based on the same inventive concept, the embodiment of the invention also provides a range hood, which comprises:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the method as described above.
Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the method as described above.
In the embodiment of the invention, the image acquisition module is integrated in the control device, whether the noise of the range hood is greater than a preset noise threshold value is used as a switching-on/off instruction of the image acquisition module, if the noise of the range hood is greater than the preset noise threshold value, the image acquisition module is triggered to be started, and the image acquisition module is triggered to be started again, so that the power consumption of the range hood can be reduced; the control device acquires the oil smoke image through the image acquisition module, if the oil smoke concentration reflected by the oil smoke image is judged to be larger than a preset concentration threshold value, the current smoke exhaust effect of the range hood is poor, the oil smoke excessively exceeds the preset oil smoke concentration threshold value, and smoke exhaust is urgently needed, so that the rotating speed of the fan is increased, the smoke exhaust is accelerated, and the good kitchen environment and the body health of a user are ensured.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic diagram of a control method of a range hood provided by an embodiment of the invention;
fig. 2 is a schematic diagram of another control method of a range hood according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a control method of a range hood according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of step S100 in FIG. 1;
FIG. 5 is a schematic diagram of step S300 in FIG. 1;
fig. 6 is a schematic diagram of a control device of a range hood according to an embodiment of the present invention;
fig. 7 is a flowchart of a control method of a range hood according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious 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 basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, a schematic diagram of a control method of a range hood according to an embodiment of the present invention is shown. The lampblack absorber described in this embodiment can be an integrated kitchen range integrated with a kitchen range, can also be a lampblack absorber individual mutually independent with the kitchen range, and can also be an intelligent lampblack absorber capable of wirelessly communicating with devices such as a mobile terminal. This lampblack absorber includes all subassemblies that are used for oil absorption cigarette and oil extraction cigarette, and optional lampblack absorber includes fan and image acquisition module, still includes the oil smoke wind channel that is used for discharging the oil smoke etc.. The range hood further comprises a control device, wherein the control device is used for executing the control method in any embodiment, the control device is realized in a software and/or hardware mode and is configured in the range hood, and therefore intelligent control of the range hood is achieved.
The control method provided by the embodiment comprises the following steps:
s100, detecting noise of the range hood;
s200, if the noise of the range hood is larger than a preset noise threshold value, triggering an image acquisition module to be started;
s300, judging whether the oil smoke concentration is greater than a preset concentration threshold value according to the oil smoke image acquired by the image acquisition module;
and S400, if the oil smoke concentration is greater than a preset concentration threshold value, increasing the rotating speed of the fan.
In this embodiment, the lampblack absorber includes the image acquisition module, the image acquisition module is used for gathering the oil smoke image of lampblack absorber environment, should install in the lampblack absorber position department towards the top of a kitchen range or side to the top of a kitchen range based on this image acquisition module, can directly gather the oil smoke image on the top of a kitchen range, can understand, on the basis of guaranteeing the collection precision, in other embodiments, still selectable image acquisition module rationally selects the mounted position according to actual demand, or, rationally set up image acquisition module's quantity etc. in the lampblack absorber according to actual demand, be not limited to this.
The optional image acquisition module is a high-definition camera, and the image acquisition module can also integrate image processing and image analysis functions.
The range hood also comprises a fan. It can be understood that after the range hood is opened according to a user instruction, the fan is started, and the image acquisition module is kept turned off at the moment. Then, the control device triggers the image acquisition module to be started after detecting the trigger signal subsequently, otherwise, the image acquisition module in the range hood keeps a turn-off state, and therefore the power consumption of the range hood can be reduced.
As mentioned above, the control device can detect the noise of the range hood in real time, at regular time or at irregular time during the working process of the fan of the range hood. A sound sensor is integrated in the optional range hood and used for collecting sound signals of the range hood, and the control device can obtain the noise value of the range hood through the sound signals collected by the sound sensor. The control device is internally pre-stored with a preset noise threshold, and based on the preset noise threshold, the control device can compare the preset noise threshold with the real-time noise value of the range hood and judge the magnitude of the preset noise threshold and the real-time noise value of the range hood so as to perform subsequent control according to a judgment result.
It should be noted that the preset noise threshold may be a default noise value of the system or a noise value preset by the user, and is characterized as the maximum noise of the range hood that can be received by the user, and therefore the preset noise thresholds of different user households may be the same or different, and are not specifically limited and exemplified in the embodiment of the present invention.
It can be understood that the control device determines the noise value of the range hood through the sound sensor only in a noise value detection mode, and in other embodiments, other modes can be optionally used to determine the noise value of the range hood, but not limited to this. In addition, the installation position of the sound sensor in the range hood is not specifically limited, the sound sensor can be optionally positioned in the oil smoke air channel, on the basis of ensuring the detection precision, the installation position and the installation number of the sound sensor can be reasonably selected according to actual requirements, and the range hood is not limited to the installation position and the installation number.
After the control device compares the preset noise threshold value with the real-time noise value of the range hood, two judgment results exist, namely the noise value of the range hood is larger than the preset noise threshold value, or the noise value of the range hood is smaller than or equal to the preset noise threshold value. The control device can execute different operations according to different judgment results.
In this embodiment, the noise value of the range hood is greater than the preset noise threshold, which is the trigger signal of the image acquisition module, that is, when the control device determines that the current noise value is greater than the preset noise threshold, the image acquisition module is triggered to start. For the condition that the noise value of the range hood is larger than the preset noise threshold, the rotating speed of a fan of the range hood is higher, the noise of the range hood is too large, and the user experience is possibly influenced. However, in order to ensure the smoke evacuation effect, the image acquisition module needs to be triggered to be opened, so that the good smoke evacuation effect is ensured and the low noise is also considered.
The image acquisition module acquires oil smoke images on the cooking bench, and the control device analyzes the oil smoke images acquired by the image acquisition module and judges whether the oil smoke concentration is greater than a preset concentration threshold value or not according to the oil smoke images. After the image acquisition module is started, oil smoke images of the environment where the range hood is located can be acquired in real time, and the control device can identify whether the oil smoke concentration of the current environment is greater than a preset concentration threshold value or not according to the oil smoke images of the image acquisition module. If the oil smoke concentration is too big, it is not good to explain current lampblack absorber's smoke exhaust effect, needs to improve the smoke exhaust effect earlier this moment, solves the high noise problem again. If the oil smoke concentration is smaller, the smoke exhaust effect of the current range hood is good, at the moment, the range hood exhausts smoke according to the current smoke exhaust efficiency, and the problem of high noise can be directly solved.
It should be noted that, the detection of the oil smoke concentration by the image acquisition module mainly includes acquiring an oil smoke image, and then analyzing the oil smoke image to determine whether the oil smoke concentration is greater than a preset concentration threshold value. The number of the image acquisition modules in the range hood can be one, two or more. When the number of the image acquisition modules is one, the acquired oil smoke image is directly used as a reference for judgment. When the number of the image acquisition modules is two or more, the oil smoke images acquired by the image acquisition modules can be processed and identified so as to comprehensively judge the oil smoke concentration.
It can be understood that the oil smoke concentration is a critical value which is a preset concentration threshold value. When the oil smoke concentration is larger than a preset concentration threshold value, the oil smoke concentration of the range hood is judged to be large, the smoke exhaust effect of the current range hood is poor, and improvement is urgently needed; the oil smoke concentration is less than or equal to the preset concentration threshold value, the oil smoke concentration of the range hood is judged to be good, the smoke exhaust effect of the current range hood is good, and improvement can be delayed. It should be noted that the preset concentration threshold may be a system default oil smoke concentration value or an oil smoke concentration value preset by a user, and is characterized by a maximum oil smoke concentration that can be received by the user, and the maximum oil smoke concentration exceeds the oil smoke concentration, which may cause discomfort to the user.
For the situation that the oil smoke concentration is greater than the preset concentration threshold, the situation that the current smoke exhaust effect of the range hood is poor or the smoke exhaust is not smooth and exceeds the oil smoke concentration threshold set by a user or defaulted by a system is urgently needed to be improved, the rotating speed of the fan is increased based on the situation, the air exhaust amount of the fan can be increased, the smoke exhaust effect is further improved, the oil smoke in a kitchen is timely discharged, and the oil smoke concentration is reduced.
In the embodiment of the invention, the image acquisition module is integrated in the control device, whether the noise of the range hood is greater than a preset noise threshold value is used as a switching-on/off instruction of the image acquisition module, if the noise of the range hood is greater than the preset noise threshold value, the image acquisition module is triggered to be started, and the image acquisition module is triggered to be started again, so that the power consumption of the range hood can be reduced; the control device acquires the oil smoke image through the image acquisition module, if the oil smoke concentration reflected by the oil smoke image is judged to be larger than a preset concentration threshold value, the current smoke exhaust effect of the range hood is poor, the oil smoke excessively exceeds the preset oil smoke concentration threshold value, and smoke exhaust is urgently needed, so that the rotating speed of the fan is increased, the smoke exhaust is accelerated, and the good kitchen environment and the body health of a user are ensured.
Exemplarily, referring to fig. 2, a schematic diagram of another control method for a range hood according to an embodiment of the present invention is shown, before the operation of detecting the noise of the range hood in optional step S100 shown in fig. 2, the method further includes: and S001, controlling the rotating speed of the fan according to a constant air volume mode. The specific execution manner of the operation of increasing the rotation speed of the fan in the optional step S400 is to increase the rotation speed of the fan according to the constant air volume mode.
In this embodiment, the selectable range hood is a constant-air-volume range hood, and after the user inputs the instruction, the range hood obtains a target constant-air-volume value corresponding to the instruction according to the user instruction, and then performs constant-air-volume operation according to the target constant-air-volume value. It can be understood that, in order to reach the same constant air volume value, under the different lampblack absorber loads, the fan rotational speed of lampblack absorber is different, and is specific, the bigger the lampblack absorber load is, the bigger the fan rotational speed that the lampblack absorber needs is. Factors influencing the load of the range hood at least comprise common flue resistance and smoke exhaust conditions of an oil smoke channel, the common flue resistance is increased, the load of the range hood is increased, the oil smoke channel is blocked, the load of the range hood is increased, the pressure of the oil smoke channel is increased, the load of the range hood is increased, and the factors influencing the load of the range hood are not limited to the common flue resistance and the smoke exhaust conditions.
As described above, the user instructs the range hood to operate according to the target constant air volume value, so that the air volume output by the range hood is constant and is the target constant air volume value. If the load of the range hood in the use environment of the current user is larger, the rotating speed of a fan of the range hood is larger, and the noise of the corresponding range hood is higher; if the load of the range hood in the current use environment of the user is small, the rotating speed of a fan of the range hood is small, and the noise of the corresponding range hood is small.
The control device detects the noise of the range hood in real time, the preset noise threshold value is the maximum noise value which is stored in the control device in advance and can be accepted by a user, and if the noise of the range hood is larger than the preset noise threshold value, the noise of the range hood is larger at the moment, which indicates that the load of the current environment where the range hood is located is larger. The load of the range hood is affected by the common resistance of the common flue and the smoke discharging condition of the oil smoke channel, obviously, the common flue resistance and the oil smoke concentration of the range hood are unknown under the current condition, and if the rotating speed of the fan is directly reduced to reduce the noise, the oil smoke concentration in a kitchen is increased, and the health of a user is affected. Under the condition, the oil smoke concentration of the range hood is guaranteed to be lower than the set concentration value, then noise is reduced, and the body health of a user is guaranteed. Therefore, the control device triggers the image acquisition module to be started, judges the current oil smoke concentration according to the oil smoke image acquired by the image acquisition module, and performs subsequent control on the range hood according to the oil smoke concentration.
If the oil smoke concentration is larger than the preset concentration threshold, the oil smoke concentration is reduced firstly so that the oil smoke concentration of the range hood is smaller than or equal to the preset concentration threshold, and therefore the body health of a user is guaranteed. The rotating speed of the fan is improved, the air quantity of the fan is increased, the smoke exhaust effect is improved, the oil smoke concentration is reduced, and the oil smoke in a kitchen is guaranteed to be discharged in time. The rotating speed of the fan can be increased according to a constant air volume mode, so that the air volume of the fan is matched with the load of the current range hood, kitchen oil smoke is discharged timely and efficiently, and the oil smoke concentration is reduced.
Referring to fig. 3, a schematic diagram of a further control method of a range hood according to an embodiment of the present invention is shown, and after optional step S300 shown in fig. 3, the method further includes: and S500, if the oil smoke concentration is smaller than or equal to a preset concentration threshold value, reducing the rotating speed of the fan until the noise of the range hood is smaller than or equal to the preset noise threshold value. If the detected oil smoke concentration is smaller than or equal to the preset concentration threshold value, the oil smoke concentration of the current range hood is in a reasonable range, and at the moment, if the noise of the range hood is still larger than the preset noise threshold value, in order to improve user experience, the noise of the range hood can be reduced, and the noise is reduced by reducing the rotating speed of the fan. Therefore, noise puzzlement caused by high rotating speed of the fan during low oil smoke is avoided, and low noise is realized. It can be understood that if the range hood is in the constant air volume mode, the range hood can exit the constant air volume mode first and then reduce noise when reducing noise.
When detecting that oil smoke concentration is less than or equal to and predetermines the concentration threshold value, and the noise of lampblack absorber is less than or equal to and predetermines the noise threshold value, in order to guarantee good smoke exhaust effect, can stabilize the fan rotational speed, guarantee the good smoke exhaust effect of lampblack absorber when realizing the low noise, improve user experience.
In other embodiments, the manner of increasing the rotational speed of the fan is not limited to the constant air volume mode; the rotating speed of the fan can be increased in other modes, such as a mode of fixed rotating speed increment, namely the difference value between the rotating speed of the next-stage fan and the rotating speed of the previous-stage fan is the fixed rotating speed increment; or the rotating speed of the fan is increased in a stepless rotating speed adjusting mode. Obviously, the way of reducing the rotation speed of the fan is not limited to the constant air volume mode; the rotating speed of the fan can be reduced in a fixed rotating speed increment mode, namely the difference value between the rotating speed of the previous-stage fan and the rotating speed of the next-stage fan is the fixed rotating speed increment; or the rotating speed of the fan is reduced in a stepless rotating speed adjusting mode. Not limited thereto.
Exemplarily, referring to fig. 4, a schematic diagram of step S100 provided for the embodiment of the present invention, the operation of detecting noise of the range hood according to step S100 shown in fig. 4 includes:
s101, acquiring the rotating speed of a fan;
s102, if the rotating speed of the fan is larger than a preset rotating speed threshold corresponding to a preset noise threshold, judging that the noise of the range hood is larger than the preset noise threshold.
In the embodiment, the noise value of the range hood can be determined by detecting the rotating speed of the fan, so that a sound sensor is not required to be arranged in the range hood, and the cost of the range hood is reduced. The noise of lampblack absorber mainly derives from the rotatory produced noise of fan, and the fan rotational speed is big more, and the noise of lampblack absorber is big more, and the fan rotational speed is little less, and the noise of lampblack absorber is little.
It should be noted that the preset rotation speed threshold is a standard rotation speed corresponding to the preset noise threshold, and the preset rotation speed threshold is a fan rotation speed determined by the system according to the preset noise threshold, and at the fan rotation speed, the noise of the range hood is the preset noise threshold or within a certain range of the preset noise threshold. The preset noise thresholds of different user households may be the same or different, and correspondingly, the preset rotational speed thresholds of different user households may be the same or different, and are not specifically limited and exemplified in the embodiment of the present invention.
When the control device detects that the rotating speed of the fan is greater than the preset rotating speed threshold value, the noise of the current range hood can be judged to be greater than the preset noise threshold value.
In the embodiment, the noise value of the range hood is determined by detecting the rotating speed of the fan, a sound sensor does not need to be installed in the range hood, wiring of the sensor is reduced, and the cost of the range hood is reduced.
Exemplarily, referring to fig. 5, a schematic diagram of step S300 provided for the embodiment of the present invention, as shown in fig. 5, the optional step S300 includes:
step S301, converting the oil smoke image into a gray scale image to obtain a pixel gray scale value of each pixel;
step S302, if the pixel gray scale value of the gray scale image meets a preset rule, the oil smoke concentration is judged to be larger than a preset concentration threshold value.
Summing pixel gray scale values of all pixels in the selectable gray scale image and averaging to obtain a pixel gray scale average value of the gray scale image, wherein the preset rule is that the pixel gray scale average value of the gray scale image is larger than a first set gray scale value; or the preset rule is that at least n pixels exist in the gray-scale image, the pixel gray-scale values of the n pixels are all larger than a second set gray-scale value, the gray-scale image comprises M pixels, and n is larger than or equal to M/3. The first set gray scale value may be selected to be equal to the second set gray scale value.
In this embodiment, the oil smoke image is gathered to the image acquisition module, and controlling means carries out the analysis to the oil smoke image to the realization is to the judgement of oil smoke concentration. It can be understood that the oil smoke images collected under different oil smoke concentrations are different, and specifically, the difference can be directly reflected on the gray scale of the pixel. Therefore, the control device can convert the oil smoke image into the gray scale image and obtain the pixel gray scale value of each pixel in the gray scale image, and obviously, the gray scale of the same pixel is changed due to different oil smoke concentrations.
The control device is pre-stored with a preset rule for judging the gray scale, the preset rule is the relationship between the gray scale and the concentration when the oil smoke concentration obtained by statistics is greater than a preset concentration threshold value, if the pixel gray scale value of the gray scale image meets the preset rule, the oil smoke concentration can be judged to be greater than the preset concentration threshold value, otherwise, if the pixel gray scale value of the gray scale image does not meet the preset rule, the oil smoke concentration can be judged to be less than or equal to the preset concentration threshold value. That is, the present embodiment converts the oil smoke concentration into an oil smoke image, and by determining the pixel gray scale value, the oil smoke concentration is determined.
The preset rule can be selected as that the average value of the pixel gray scales of the gray scale image is larger than a first set gray scale value, the first set gray scale value is a gray scale threshold value pre-stored by the control device, and the first set gray scale value is an integral gray scale value represented by the oil smoke image when the oil smoke concentration obtained by statistics is larger than the preset concentration threshold value. If the average value of the pixel gray scales is larger than the first set gray scale value, the oil smoke concentration corresponding to the representation is larger than the preset concentration threshold value, and if the average value of the pixel gray scales is smaller than or equal to the first set gray scale value, the oil smoke concentration corresponding to the representation is smaller than or equal to the preset concentration threshold value. It can be understood that the pixel gray scale values of all pixels in the gray scale image are summed and then averaged to obtain the pixel gray scale average value of the gray scale image.
The preset rule can be selected as that at least n pixels exist in the gray-scale image, and the gray-scale values of the pixels of the n pixels are all larger than the second set gray-scale value. The second set gray scale value is another gray scale threshold value pre-stored by the control device, and is the gray scale value expressed by the single pixel when the oil smoke concentration obtained by statistics is greater than the preset concentration threshold value. If the pixel gray scale value is greater than the second set gray scale value, representing that the oil smoke concentration of the corresponding pixel point is greater than a preset concentration threshold value; and if the pixel gray-scale value is less than or equal to the second set gray-scale value, the oil smoke concentration of the corresponding pixel point is represented to be less than or equal to the preset concentration threshold. It can be understood that the distribution of the oil smoke concentration in the environment is not always uniform, and there is a diffusion process, so as long as the pixel gray scale values of n pixels in the gray scale image are all greater than the second set gray scale value, it can be determined that the oil smoke concentration is greater than the preset concentration threshold, and n may be the number of the pixels 1/3 in the gray scale image, and certainly may be other, and is not limited thereto.
The first set gray scale value may be equal to the second set gray scale value, but the relevant practitioner may reasonably design the first set gray scale value to be equal to the second set gray scale value according to tests or other statistics, which may be the same or different, and no specific example is given in the present invention.
Based on the same inventive concept, the embodiment of the invention also provides a control device of the range hood, the range hood comprises a fan and an image acquisition module, the control device is used for executing the control method of any embodiment, and the control device can be selected to comprise a main control chip such as a single chip microcomputer or an MCU.
Referring to fig. 6, a schematic diagram of a control device of a range hood according to an embodiment of the present invention is shown, and as shown in fig. 6, the control device according to this embodiment includes: the detection module 10 is used for detecting the noise of the range hood; the triggering module 20 is used for triggering the image acquisition module to be started when the noise of the range hood is greater than a preset noise threshold value; and the control module 30 is configured to determine whether the oil smoke concentration is greater than a preset concentration threshold according to the oil smoke image acquired by the image acquisition module, and increase the rotation speed of the fan if the oil smoke concentration is greater than the preset concentration threshold.
The selectable image acquisition module is a high-definition camera.
Referring to fig. 7, which is a schematic flow chart of a control method of a range hood according to an embodiment of the present invention, as shown in fig. 7, an optional control device controls an air volume output by the range hood by detecting an operation parameter of a fan. Firstly, step S11, after a user inputs an instruction, the range hood is started and operated; and in the step S12, the range hood obtains a target constant air volume value according to a user instruction, controls the fan to operate and controls the rotating speed of the fan according to the corresponding air volume. For the same constant exhaust air volume, the larger the load of the range hood is, the more unsmooth the exhaust of smoke in a flue is, the larger the rotating speed of the fan is, and the larger the noise is; the smaller the load of the range hood is, the smaller the rotating speed of the fan is, and the smaller the noise is. When the load of the environment where the range hood is located is increased in the step S13, it is represented that the current smoke exhaust of the flue of the range hood is not smooth, the control device of the range hood needs to increase the rotating speed of the fan to ensure that the exhaust air volume is constant, the noise of the range hood is greatly increased at the moment, and even the noise of the range hood is possibly greater than a preset noise threshold.
If the noise of the range hood is greater than the preset noise threshold in the step S14, or if the fan speed reaches the preset speed threshold causing the noise dividing point, obviously, the preset noise threshold corresponds to the preset speed threshold, step S15 is executed, that is, the control device triggers the image acquisition module to open, determines whether the oil smoke concentration is greater than the preset concentration threshold according to the oil smoke image acquired by the image acquisition module, and performs noise reduction on the basis of ensuring that the oil smoke concentration is within a reasonable range, so as to primarily ensure the health of the user. An image acquisition module used for acquiring the oil smoke concentration condition is installed in the oil smoke machine, and the image acquisition module can be selected to be a high-definition camera.
After the control device triggers the image acquisition module to be started, the oil smoke concentration is judged according to the oil smoke image. In step S16, if it is detected that the oil smoke concentration is greater than the preset concentration threshold, it indicates that the oil smoke concentration in the area where the range hood is located is too large and the oil smoke concentration is high, at this time, the oil smoke concentration is first reduced, the range hood is selected to continue to operate in a constant air volume mode, that is, the rotation speed of the fan is increased, and the oil smoke concentration is detected in real time. For step S17, if it is detected that the oil smoke concentration is less than or equal to the preset concentration threshold, it is indicated that the oil smoke concentration in the area where the range hood is located is within a reasonable range, and the oil smoke concentration is low, at this time, noise reduction can be performed on the range hood, that is, the range hood exits from the current constant air volume mode, noise is reduced by reducing the rotation speed of the fan of the range hood until the noise of the range hood is less than or equal to the preset noise threshold, and the oil smoke concentration is judged in real time; the selectable fan rotating speed is less than or equal to a preset rotating speed threshold value.
As mentioned above, the control process of the control device can ensure that the oil smoke in the kitchen can be discharged in time, the problem of noise puzzlement caused by high rotating speed of the fan when the oil smoke is low is avoided, and the use experience of a user is improved.
In the embodiment of the invention, the image acquisition module is arranged on the range hood or the constant-air-volume range hood, when the rotating speed of the fan reaches the preset noise threshold value causing the noise dividing point or the preset rotating speed threshold value corresponding to the preset noise threshold value, the image acquisition module is triggered to be started, the oil smoke concentration is detected in real time, whether the oil smoke concentration is greater than the preset concentration threshold value or not is judged, and the subsequent working mode of the fan is determined according to the judgment result. If the oil smoke concentration is detected to be greater than the preset concentration threshold value, the optional fan continues to operate according to a constant air volume mode, so that the constant air volume is ensured, and efficient smoke exhaust is realized; if the oil smoke concentration is less than or equal to the preset concentration threshold value, the fan operates at the rotating speed less than or equal to the preset rotating speed threshold value, and low noise is achieved. So avoided the noise puzzlement that the high rotational speed of fan caused during low oil smoke, also solved the slow problem of discharging fume during high oil smoke.
Based on the same inventive concept, an embodiment of the present invention further provides a range hood, which is the range hood described in any of the above embodiments, and includes: one or more processors; storage means for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to carry out the method as described above.
The optional range hood further comprises an input device and an output device, wherein the processor, the storage device, the input device and the output device in the range hood can be connected through a bus or in other ways.
The storage device, i.e. the memory, is used as a computer-readable storage medium and can be used for storing software programs, computer-executable programs and modules, such as program instructions/modules corresponding to the control method of the range hood in the embodiment of the present invention. The processor executes various functional applications and data processing of the range hood by running software programs, instructions and modules stored in the storage device, namely the control method of the range hood provided by the embodiment of the invention is realized.
The storage device can mainly comprise a storage program area and a storage data area, wherein the storage program area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the storage device may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the storage device may further include memory located remotely from the processor, which may be connected to the range hood via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device may be used to receive input numeric or character information and generate key signal inputs related to user settings and function controls of the range hood, and may include a keyboard, mouse, and the like. The output device may include a display device such as a display screen.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the computer program implements the method described above.
Of course, the storage medium containing the computer-executable instructions provided in the embodiments of the present invention is not limited to the above-described method operations, and may also perform related operations in the control method of the range hood provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above search apparatus, each included unit and module are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (12)
1. A control method of a range hood is characterized in that the range hood comprises a fan and an image acquisition module, and the control method comprises the following steps:
detecting the noise of the range hood;
if the noise of the range hood is larger than a preset noise threshold value, triggering the image acquisition module to be started;
judging whether the oil smoke concentration is greater than a preset concentration threshold value or not according to the oil smoke image acquired by the image acquisition module;
and if the oil smoke concentration is greater than the preset concentration threshold value, the rotating speed of the fan is increased.
2. The control method according to claim 1, before detecting the noise of the range hood, further comprising: and controlling the rotating speed of the fan according to a constant air volume mode.
3. The control method according to claim 2, wherein increasing the rotation speed of the fan is specifically performed in such a manner that the rotation speed of the fan is increased in the constant air volume mode.
4. The control method according to claim 1, wherein judging whether the oil smoke concentration is greater than a preset concentration threshold according to the oil smoke image acquired by the image acquisition module comprises:
converting the oil smoke image into a gray scale image to obtain a pixel gray scale value of each pixel;
and if the pixel gray scale value of the gray scale image meets a preset rule, judging that the oil smoke concentration is greater than the preset concentration threshold value.
5. The control method according to claim 4, wherein the gray-scale values of all pixels in the gray-scale image are summed and then averaged to obtain a pixel gray-scale average value of the gray-scale image, and the predetermined rule is that the pixel gray-scale average value of the gray-scale image is greater than a first predetermined gray-scale value; alternatively, the first and second electrodes may be,
the preset rule is that at least n pixels exist in the gray-scale image, the pixel gray-scale values of the n pixels are all larger than a second set gray-scale value, the gray-scale image comprises M pixels, and n is larger than or equal to M/3.
6. The control method according to claim 5, wherein the first set gray scale value is equal to the second set gray scale value.
7. The control method according to claim 1, characterized by further comprising:
and if the oil smoke concentration is less than or equal to the preset concentration threshold value, reducing the rotating speed of the fan until the noise of the range hood is less than or equal to the preset noise threshold value.
8. The control method according to claim 1, wherein detecting the noise of the range hood includes:
acquiring the rotating speed of the fan;
and if the rotating speed of the fan is greater than a preset rotating speed threshold corresponding to the preset noise threshold, judging that the noise of the range hood is greater than the preset noise threshold.
9. The utility model provides a controlling means of lampblack absorber, its characterized in that, the lampblack absorber includes fan and image acquisition module, controlling means includes:
the detection module is used for detecting the noise of the range hood;
the triggering module is used for triggering the image acquisition module to be started when the noise of the range hood is greater than a preset noise threshold value;
and the control module is used for judging whether the oil smoke concentration is greater than a preset concentration threshold value according to the oil smoke image acquired by the image acquisition module, and if the oil smoke concentration is greater than the preset concentration threshold value, the rotating speed of the fan is increased.
10. The control device of claim 9, wherein the image capture module is a high definition camera.
11. A range hood, comprising:
one or more processors;
a storage device for storing one or more programs,
when executed by the one or more processors, cause the one or more processors to implement the method of any one of claims 1-8.
12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 8.
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