Lampblack detection method and device, range hood and storage medium

Abstract

The invention provides an oil smoke detection method and device, a range hood and a storage medium, and the method comprises the steps: obtaining light information collected by a receiving assembly under the condition that a transmitting assembly emits line laser; and under the condition that the light intensity distribution state indicated by the light information is a scattered light state, determining lampblack distribution information corresponding to the light intensity distribution of the light information based on a corresponding relationship between a plurality of preset scattered light intensities and a plurality of preset lampblack concentrations. Detection is carried out based on the laser device, the oil smoke concentration in the to-be-detected space is determined by detecting light scattering of the oil smoke in the to-be-detected space, the overall oil smoke concentration of the space above the kitchen range can be detected, missing detection is not likely to happen, the detection range, the detection accuracy and the detection reliability are improved, and the laser device is simple in arrangement, low in complexity and easy to popularize. And the detection cost can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of smart home, and particularly to an oil fume detection method, device, range hood and storage medium. Background Art

[0002] The range hood is an essential electrical appliance for sucking oil fumes during daily cooking. When the existing range hood monitors the oil fume concentration below the hood, it usually uses the suction type or the opposed beam technology for detection. Among them, the suction type detection can only detect signals when the range hood is working, or can only detect the oil fume concentration near the device, and cannot detect a large range of space; while the opposed beam technology is based on the absorption of light by oil fumes, and a light emitter and at least one light receiver are respectively arranged on both sides of the area where the oil fumes are located to detect the oil fume distribution state between the two. However, this method has a small single-point measurement area, strong smoke volatility, unstable measurement, resulting in inaccurate measurement results. If multiple points are to be arranged for measurement, the cost is relatively high and the layout is complex. Summary of the Invention

[0003] In view of the problems existing in the above-mentioned prior art, the present invention provides an oil fume detection method, device, range hood and storage medium; the technical solutions are as follows:

[0004] On the one hand, the present invention provides an oil fume detection method applied to a range hood, where the range hood includes a laser device, and the laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected. The transmitting component is used to emit line laser to the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected; the method includes:

[0005] When the transmitting component emits line laser, obtain the optical information collected by the receiving component; the optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, and the light intensity distribution state includes the distribution shape, distribution area and light intensity distribution of light.

[0006] When the light intensity distribution state indicated by the optical information is a scattered light state, based on the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations, determine the oil fume distribution information corresponding to the light intensity distribution of the optical information; the oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area and oil fume distribution concentration in the space to be detected.

[0007] Further, the transmitting component can emit multiple line lasers with different emission angles to the space to be detected, and the space to be detected is the space projected by the receiving field angle of the receiving component above the cooking appliance; the method for obtaining the optical information includes:

[0008] Control the emission component to emit multiple line lasers from multiple emission angles respectively to the space to be detected, and based on the received component, receive the optical signals after multiple line lasers are reflected or scattered by substances in the space to be detected;

[0009] Perform optical distribution state analysis based on the optical signals corresponding to multiple line lasers to obtain the optical information.

[0010] Further, the optical signal is displayed as image information on the receiving component, and performing optical distribution state analysis based on the optical signals corresponding to multiple line lasers to obtain the optical information includes:

[0011] Perform image detection on the optical signal to detect the shape, area, and light intensity distribution of the optical signal to obtain the optical information.

[0012] Further, in the case where the emission component emits a line laser, after obtaining the optical information collected by the receiving component, the method further includes:

[0013] In the case where the light intensity distribution state indicated by the optical information is reflected light, determine that there is an obstacle in the space to be detected and generate an obstacle reminder information.

[0014] Further, the range hood further includes a smoke machine, and the smoke machine includes a smoke machine control end; the method further includes:

[0015] Send at least one of the optical information and the oil fume distribution information to the smoke machine control end so that the smoke machine control end controls the suction operation state of the smoke machine according to at least one of the optical information and the oil fume distribution information.

[0016] Further, the smoke machine control end controlling the suction operation state of the smoke machine according to at least one of the optical information and the oil fume distribution information includes:

[0017] In the case where the light intensity distribution state indicated by the optical information is the scattered light state, control the smoke machine to start;

[0018] Based on the corresponding relationship between multiple preset scattered light intensities and multiple suction intensities, determine the target suction intensity corresponding to the optical information; and / or, based on the corresponding relationship between multiple preset oil fume concentrations and multiple suction intensities, determine the target suction intensity corresponding to the oil fume distribution information;

[0019] The smoke machine control end controls the smoke machine to operate based on the operation parameters corresponding to the target suction intensity;

[0020] In the case where the light intensity distribution state indicated by the optical information is a non-scattered light state, control the smoke machine to close or maintain the smoke machine in a closed state.

[0021] On the other hand, the present invention provides an oil fume detection device, which is applied to an oil fume extractor. The oil fume extractor includes a laser device. The laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected. The transmitting component is used to emit a line laser into the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected; the device includes:

[0022] An information acquisition module, configured to acquire the optical information collected by the receiving component when the transmitting component emits a line laser; the optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, and the light intensity distribution state includes the distribution shape, distribution area and light intensity distribution of light;

[0023] An oil fume information determination module, configured to determine the oil fume distribution information corresponding to the light intensity distribution of the optical information based on the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations when the light intensity distribution state indicated by the optical information is a scattered light state; the oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area and oil fume distribution concentration in the space to be detected.

[0024] On the other hand, the present invention also provides an oil fume extractor, which includes a laser device and the oil fume detection device as described in any one of the above. The oil fume detection device performs oil fume detection based on the laser device;

[0025] The laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected. The transmitting component is used to emit a line laser into the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected.

[0026] Further, the transmitting component includes a laser emitter and a diffractive element. The laser emitter is used to emit a laser, and the diffractive element is used to expand the laser into a line laser;

[0027] The receiving component includes a receiver and a condenser lens. The condenser lens is at least used to converge light and adjust the receiving field of view angle of the receiving component. The light includes at least one of the reflected light and the scattered light after the line laser is reflected and scattered in the space to be detected; the receiver is used to receive the optical signal of the light.

[0028] On the other hand, the present invention provides a storage medium, in which at least one instruction or at least one program segment is stored, and the at least one instruction or the at least one program segment is loaded and executed by a processor to implement the oil fume detection method as described above.

[0029] Implementing the present invention has the following beneficial effects:

[0030] Based on a laser device for detection, the present invention acquires the optical information collected by the receiving component when the transmitting component emits line laser. When the light intensity distribution state indicated by the optical information is a scattered light state, it determines the oil fume distribution information corresponding to the light intensity distribution of the optical information. That is, by detecting the scattering of oil fume in the space to be detected on light, it determines the oil fume concentration in the space to be detected. It can detect the overall oil fume concentration in the space above the cooking appliance, is not easily missed in detection, improves the detection range, detection accuracy, and detection reliability, and the laser device has a simple layout and low complexity, which is beneficial to reducing the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 It is a logical structure diagram of an oil fume detection method provided by an embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the optical path propagation path of an oil fume detection method provided by an embodiment of the present invention;

[0034] Figure 3 It is a schematic diagram of the optical path propagation path of a laser device provided by an embodiment of the present invention;

[0035] Figure 4 It is a schematic diagram of the optical path propagation path of another oil fume detection method provided by an embodiment of the present invention;

[0036] Figure 5 It is a logical structure diagram of a method for obtaining optical information provided by an embodiment of the present invention;

[0037] Figure 6 It is a logical structure diagram of an oil fume machine control method provided by an embodiment of the present invention;

[0038] Figure 7 It is a schematic structural diagram of an oil fume detection device provided by an embodiment of the present invention;

[0039] Figure 8 It is a hardware structure block diagram of an electronic device for executing an oil fume detection method provided by an embodiment of the present invention.

[0040] Among them, the corresponding reference numerals are:

[0041] 1 - Transmitting component, 11 - Laser emitter, 12 - Diffraction component, 2 - Receiving component, 21 - Condensing lens, 22 - Receiver, 3 - Cooker. Detailed implementation

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, it should not be understood as a limitation to the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present invention are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention can be implemented in an order other than the following illustration or the following description. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or server including a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0044] In view of the problems in the prior art, such as many limiting conditions for oil fume detection, a small detection range, easy missed detection, strong volatility of oil fume smoke, unstable measurement, etc., which lead to inaccurate oil fume detection, the embodiments of the present invention provide an oil fume detection method, device, range hood and storage medium. The oil fume detection method is applied to the range hood provided by the embodiments of the present invention. The range hood includes a laser device, and the laser device includes a transmitting component 1 and at least one receiving component 2 located on the same side of the space to be detected. Among them, the transmitting component 1 is used to emit a line laser into the space to be detected, and the receiving component 2 is used to receive the optical signal of the line laser in the space to be detected; during the detection process, first, when the line laser is emitted by the transmitting component 1, the optical information collected by the receiving component 2 is obtained. The optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, including the distribution shape, distribution area and distribution light intensity of the light; then, when the light intensity distribution state indicated by the optical information is a scattered light state, it indicates that there is oil fume in the space to be detected. Then, based on the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations, the oil fume distribution information corresponding to the light intensity distribution of the optical information is determined. The oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, including the oil fume distribution shape, oil fume distribution area and oil fume distribution concentration in the space to be detected; by detecting the optical signal of the line laser from the space to be detected, the optical signal can effectively reflect the scattering state of the oil fume in the space to be detected on the line laser, so that the oil fume distribution state in the entire space area of the space to be detected can be effectively detected. Compared with the traditional detection method that can only perform single-point measurement or single-sided measurement, the present invention can greatly improve the detection range, detection accuracy and detection reliability of oil fume detection, and the laser device adopted has a simple and convenient layout, a low overall structural complexity, a low transformation cost, and is also beneficial to reducing the detection cost.

[0045] The oil fume detection method of the embodiments of the present invention will be introduced in detail below. Refer to the attached Figure 1 description of the specification, the method includes:

[0046] S101, when the line laser is emitted by the transmitting component, obtain the optical information collected by the receiving component.

[0047] Among them, the optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected. This light intensity distribution state includes the distribution shape, distribution area, and light intensity distribution of the light. In some exemplary embodiments, this light intensity distribution state may include at least one of the distribution state of scattered light and the distribution state of reflected light. Exemplarily, in some embodiments, this light intensity distribution state is a scattered light state, that is, there is scattered light in the space to be detected. In other embodiments, this light intensity distribution state is a reflected light state and there is no scattered light state, that is, there is no scattered light in the space to be detected and only reflected light exists. In other embodiments, this light intensity distribution state includes a scattered light state and a reflected light state, that is, there is scattered light and reflected light in the space to be detected. Then, according to the presence or absence of scattered light in the space to be detected, the light intensity distribution state can be directly divided into a scattered light state and a non-scattered light state. The scattered light state indicates that there is scattered light (or oil fume) in the space to be detected, and the non-scattered light state indicates that the intensity of scattered light in the space to be detected is extremely weak or even zero (or the oil fume concentration is extremely low or even zero).

[0048] As Figure 2 shown, this oil fume detection method is based on a laser device for detection. The laser device includes a transmitting component 1 and at least one receiving component 2 located on the same side of the space to be detected. The transmitting component 1 is used to emit line laser into the space to be detected, and the receiving component 2 is used to receive the optical signal of the line laser in the space to be detected.

[0049] If there is oil fume in the space to be detected, the oil fume smoke will scatter the line laser to form scattered light, and the light intensity of the scattered light is different for different oil fume concentrations. If the light intensity distribution state indicated by the optical information collected by the receiving component 2 is a scattered light state, it means that there is oil fume in the detection space, and then the oil fume concentration in the space to be detected can be further analyzed based on the optical information. In addition, if there is no oil fume in the space to be detected, the light intensity distribution state indicated by the optical information collected by the receiving component 2 is a non-scattered light state, that is, the receiving component 2 hardly receives the light intensity of the scattered light, and the light intensity of the scattered light is extremely weak or even zero, indicating that the oil fume concentration in the space to be detected is extremely low or almost no oil fume exists.

[0050] Specifically, the space to be detected is the space projected by the receiving field of view angle of the receiving component 2 above the cooking appliance 3. This space to be detected is located between the range hood and the cooking appliance 3. The range of the space to be detected is large, that is, it can detect the oil fume in the overall space above the cooking appliance 3, greatly improving the detection accuracy and reliability.

[0051] In some exemplary embodiments, the laser device may include one receiving component 2; As Figure 2As shown, in some other exemplary embodiments, the laser device includes at least two receiving components 2. The at least two receiving components 2 are located on the peripheral side of the transmitting component 1, which can expand the receiving area of the scattered light, facilitate expanding the detection range, reduce the risk of missed detection, and greatly improve the detection accuracy.

[0052] As Figure 3 shown, in some exemplary embodiments, the transmitting component 1 includes a laser emitter 11 and a diffractive element 12. The laser emitter 11 is used to emit laser light, and the diffractive element 12 is used to expand the laser light into line laser light; the receiving component 2 includes a receiver 22 and a condenser lens 21. The receiver 22 is used to receive the optical signal of the light, and the light includes at least one of the reflected light after the line laser light is reflected in the space to be detected and the scattered light after being scattered; the condenser lens 21 is at least used to converge the light and adjust the receiving field angle of the receiving component 2, so that light in a wider range can be received by the receiver 22, further expanding the detection range.

[0053] S103, in the case where the light intensity distribution state indicated by the optical information is a scattered light state, based on the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations, determine the oil fume distribution information corresponding to the light intensity distribution of the optical information.

[0054] Among them, the oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area, and oil fume distribution concentration in the space to be detected.

[0055] In some exemplary embodiments, the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations can be pre-stored in the form of a table. Then, in the case where the optical information indicates that the light intensity distribution state is a scattered light state, the table can be directly looked up based on the light intensity distribution of the optical information to determine the oil fume concentration corresponding to the scattered light intensity at each point, surface, and space in the space to be detected, and obtain the oil fume distribution state in the space to be detected, which is beneficial to saving computing power, improving the response speed, and detection timeliness.

[0056] Specifically, as Figure 4As shown, the transmitting assembly 1 can emit multiple line lasers with different emission angles into the space to be detected. Specifically, the emission angles of the multiple line lasers can be adjusted by adjusting the diffraction element 12. In the emission direction of each line laser, due to the scattering effect of cooking fumes, a detection line can be formed within the receiving field of view angle of the receiving assembly 2. Multiple line lasers with the same emission angle size can be further connected into a detection plane within the receiving field of view angle due to the scattering of cooking fumes. Multiple line lasers with different emission angle sizes can be further formed into multiple detection planes longitudinally, so that the entire detection range can cover the three-dimensional space of the entire space to be detected. It can not only detect the concentration of cooking fumes at a single point or on a single surface, but also detect the concentration of cooking fumes in the entire space. While improving the detection range, it can avoid misjudgment caused by upper occlusion, greatly improving the detection accuracy and reliability. Moreover, the detection plane formed by connecting multiple line lasers with the same emission angle size within the receiving field of view angle is an inclined plane, which is also more conducive to reducing the risk of detection errors compared with traditional planar detection.

[0057] Specifically, as Figure 5 shown, the method for obtaining the optical information includes:

[0058] S202, controlling the transmitting assembly to emit multiple line lasers respectively from multiple emission angles into the space to be detected, and receiving, based on the receiving assembly 2, the optical signals of the multiple line lasers after being reflected or scattered by substances in the space to be detected.

[0059] S204, performing an analysis of the optical distribution state based on the optical signals corresponding to the multiple line lasers to obtain the optical information.

[0060] Among them, the optical signal is a kind of image information. Then, by performing an analysis of the optical distribution state on the optical signal, the distribution state information of various lights in the picture in the image information is determined, that is, the optical information is obtained. In some exemplary embodiments, the receiving element 22 is a CCD image sensor. The CCD image sensor receives the initial optical image of the area to be detected and converts the initial optical image into a digital signal. During the conversion process, through photoelectric conversion, light is converted into an electrical signal and then processed into a digital signal. The size of the digital signal is proportional to the intensity of the electrical signal, so the digital signal can be used to represent the initial optical image. Then, post-processing such as color correction and white balance processing can be performed through a digital signal processor, encoded into data formats such as supported image formats and resolutions, and finally displayed or stored in an image format, that is, the optical signal is displayed in the receiving assembly 2 as image information.

[0061] After that, an optical distribution state analysis is performed on the optical signal, which is to extract features such as the shape, area, and light intensity of the light in the optical signal, so as to determine the distribution states of various lights in the optical signal after the line lasers are scattered or reflected by substances in the area to be detected, that is, optical information, which is convenient for subsequent oil fume detection based on the optical information and is beneficial to improving the detection accuracy.

[0062] Specifically, the optical distribution state analysis based on the optical signals corresponding to the multiple line lasers to obtain the optical information, that is, step S204 includes:

[0063] Perform image detection on the optical signal to detect the shape, area, and light intensity distribution of the optical signal, and obtain the optical information.

[0064] Among them, the optical information is used to characterize the distribution state of light in the area to be detected, including the distribution state of scattered light and the distribution state of reflected light; performing image detection on the optical signal can convert the optical signal into a digital signal according to information such as pixel distribution, brightness, and color in the optical signal, and extract target features through logical operations on the above digital signals, so as to distinguish through the light intensity and shape displayed in different regions of the optical signal, obtain the image detection result, that is, obtain the optical information, and the image detection is accurate and fast.

[0065] Specifically, when the emission component emits line lasers, after obtaining the optical information collected by the receiving component, the method further includes:

[0066] When the light intensity distribution state indicated by the optical information is the reflected light state, it is determined that there is an obstacle in the area to be detected, and an obstacle reminder information is generated.

[0067] Among them, the reflected light state belongs to one of the non-scattered light states, and the smoke is not a completely reflective surface with a very small reflection intensity. The fact that the light intensity distribution state indicated by the optical information is the reflected light state means that there is an obstacle other than oil fume in the area to be detected; the obstacle can include any one of a cooking appliance, a human body, and a shaped object, such as a spatula, a human hand, etc.; when the line laser irradiates the surface of the obstacle, reflection occurs to form reflected light, and the light intensity of the reflected light is much greater than the light intensity of the scattered light after the line laser is scattered by the oil fume smoke, and the light intensity of the reflected light is in a regular linear shape. Therefore, according to the light intensity distribution state indicated by the optical information, the shape and light intensity of the reflected light can be further determined, so as to determine the existence of the obstacle, effectively distinguish the oil fume and the obstacle in the area to be detected, avoid mistakes in oil fume detection, and greatly improve the detection accuracy; in addition, in some exemplary embodiments, the generation of the obstacle reminder information can further remind the user, prevent scalding or other foreign object contamination of the cooking appliance, and improve the user's usage safety.

[0068] Specifically, the range hood further includes a smoke machine, and the smoke machine includes a smoke machine control terminal; the method further includes:

[0069] Send at least one of the optical information and the oil fume distribution information to the range hood control terminal, so that the range hood control terminal controls the suction operation state of the range hood according to at least one of the optical information and the oil fume distribution information.

[0070] Among them, the optical information can be used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected. Then, in some exemplary embodiments, after step S101, the optical information can be directly sent to the range hood control terminal, so that the range hood control terminal further makes a logical judgment, analyzes the magnitude of the oil fume concentration corresponding to the optical information, and thus controls the suction operation state of the range hood based on the optical information, effectively sucking the oil fume in the space to be detected, improving the suction effectiveness, accuracy and reliability, and enhancing the user experience.

[0071] In other exemplary embodiments, after obtaining the oil fume distribution information, that is, after step S103, the oil fume distribution information can be sent to the range hood control terminal, so that the range hood control terminal controls the suction operation state of the range hood according to the oil fume distribution information. In this case, there is no need for the range hood control terminal to perform logical operations again, which is beneficial to saving the computing power of the range hood control terminal, improving the response speed of the range hood, greatly enhancing the real-time performance of the range hood for suction, further reducing the harm of oil fume to users, and enhancing the user experience.

[0072] In other exemplary embodiments, the optical information and the oil fume distribution information can also be sent to the range hood control terminal respectively, and through logical operations and comparisons in synchronization, the control accuracy and reliability of the range hood control terminal for the suction operation state of the range hood are further improved, and the risk of errors or misdetection is reduced.

[0073] Specifically, as Figure 6 shown, the range hood control terminal controls the suction operation state of the range hood according to at least one of the optical information and the oil fume distribution information, including:

[0074] S301, when the light intensity distribution state indicated by the optical information is the scattered light state, control the range hood to start.

[0075] That is, after it is determined that there is oil fume in the space to be detected, the range hood can be controlled to start; specifically, the range hood can be controlled to start when it is determined from the optical information that the light intensity distribution state is the scattered light state after step S101, or after step S103, after determining the scattered light state and the oil fume distribution information, the range hood can be controlled to start.

[0076] S303, based on the corresponding relationship between multiple preset scattered light intensities and multiple suction intensities, determine the target suction intensity corresponding to the optical information; and / or,

[0077] S305. Based on the corresponding relationships between multiple preset oil fume concentrations and multiple suction intensities, determine the target suction intensity corresponding to the oil fume distribution information.

[0078] Among them, in step S303, if the information sent to the range hood control terminal includes light information, the range hood control terminal can pre-store the corresponding relationships between multiple preset scattered light intensities and multiple suction intensities in the form of a table. After receiving the light information, the range hood control terminal parses the light information to obtain the corresponding scattered light intensity, and then can directly determine the corresponding target suction intensity by looking up the table. Moreover, the target suction intensity increases with the increase of the scattered light intensity, so that when the range hood subsequently sucks based on the target suction intensity, it can efficiently and stably suck away the oil fume, reduce the harm of the oil fume to the human body, and improve the user experience.

[0079] In step S305, if the information sent to the range hood control terminal includes oil fume distribution information, the range hood control terminal can pre-store the corresponding relationships between multiple preset oil fume concentrations and multiple suction intensities in the form of a table. After receiving the oil fume distribution information, the range hood control terminal parses the light information to obtain the corresponding oil fume concentration, and then can directly determine the corresponding target suction intensity by looking up the table. Moreover, the target suction intensity increases with the increase of the oil fume concentration, so that when the range hood subsequently sucks based on the target suction intensity, it can efficiently and stably suck away the oil fume, reduce the harm of the oil fume to the human body, and improve the user experience.

[0080] S307. The range hood control terminal controls the range hood to operate based on the operating parameters corresponding to the target suction intensity.

[0081] S309. In the case where the light intensity distribution state indicated by the light information is a non-scattered light state, control the range hood to close or maintain the range hood in a closed state.

[0082] Among them, the case of the non-scattered light state refers to the case where the light intensity of the scattered light in the space to be detected is extremely low or even zero; and, in some exemplary embodiments, this step S309 can be executed after step S307, that is, during the process of the range hood control terminal controlling the range hood to suck, if it is detected that the light intensity distribution state indicated by the light information is a non-scattered light state, it means that most of the oil fume in the space to be detected has been sucked away by the range hood, and the scattered light intensity scattered by the remaining trace amount of oil fume is not sufficient to be received by the receiving component 2 and manifested, or all the oil fume in the space to be detected has been sucked away by the range hood, which is manifested as the light intensity distribution state indicated by the light information being a non-scattered light state. At this time, the range hood control terminal can control the range hood to close.

[0083] In some other exemplary embodiments, the step S309 may also be performed after the step S101. That is, after obtaining the optical information, if the light intensity distribution state indicated by the optical information is a non-scattered light state, it indicates that the oil fume content in the space to be detected is extremely low or even zero, and there is no need to turn on the range hood for suction.

[0084] Corresponding to the oil fume detection method provided in the foregoing embodiments of the present invention, the oil fume detection device provided in the embodiments of the present invention can implement the oil fume detection method in the foregoing method embodiments. Among them, as Figure 7 shown, the oil fume detection device may include:

[0085] An information acquisition module 710, configured to acquire optical information collected by the receiving component when the transmitting component emits a line laser; the optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, and the light intensity distribution state includes the distribution shape, distribution area, and light intensity distribution of light;

[0086] An oil fume information determination module 720, configured to determine oil fume distribution information corresponding to the light intensity distribution of the optical information based on the corresponding relationship between a plurality of preset scattered light intensities and a plurality of preset oil fume concentrations when the light intensity distribution state indicated by the optical information is a scattered light state; the oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area, and oil fume distribution concentration in the space to be detected.

[0087] Specifically, the information acquisition module 710 may include:

[0088] A line laser emission control module, configured to control the transmitting component to emit multiple lines of line lasers to the space to be detected from multiple emission angles respectively, and based on the receiving component to receive the optical signals after the multiple lines of line lasers are reflected or scattered by substances in the space to be detected;

[0089] An analysis module, configured to perform light distribution state analysis based on the optical signals corresponding to the multiple lines of line lasers to obtain the optical information.

[0090] Specifically, the analysis module may further include:

[0091] An image detection module, configured to perform image detection on the optical signal to detect the shape, area, and light intensity distribution of the optical signal, and obtain the optical information.

[0092] Specifically, the oil fume detection device may further include:

[0093] A reflected light determination module, configured to determine that there is an obstacle in the space to be detected and generate an obstacle reminder message when the light intensity distribution state indicated by the optical information is reflected light.

[0094] Specifically, the oil fume detection device may further include:

[0095] An information sending module, configured to send at least one of the optical information and the oil fume distribution information to the range hood control terminal, so that the range hood control terminal controls the suction operation state of the range hood according to at least one of the optical information and the oil fume distribution information.

[0096] Specifically, the range hood control terminal may further include:

[0097] A range hood starting module, configured to control the range hood to start when the light intensity distribution state indicated by the optical information includes the scattered light state;

[0098] A suction intensity determining module, configured to determine a target suction intensity corresponding to the optical information based on the corresponding relationship between multiple preset scattered light intensities and multiple suction intensities; and / or, determine a target suction intensity corresponding to the oil fume distribution information based on the corresponding relationship between multiple preset oil fume concentrations and multiple suction intensities;

[0099] An execution module, configured to enable the range hood control terminal to control the range hood to operate based on the operation parameters corresponding to the target suction intensity;

[0100] A range hood closing module, configured to control the range hood to close or maintain the range hood in a closed state when the light intensity distribution state indicated by the optical information does not include the scattered light state.

[0101] It should be noted that, when the oil fume detection device provided in the above embodiments realizes its functions, only the division of the above functional modules is used for illustration. In practical applications, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the oil fume detection device provided in the above embodiments and the method embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be elaborated here.

[0102] The oil fume detection device includes a processor and a memory. Among them, the processor (or CPU (Central Processing Unit, central processor)) is the core component of the oil fume detection device, and its main function is to interpret the memory instructions and process the data fed back by each module; the structure of the processor is roughly divided into an arithmetic logic component and a register component, etc. The arithmetic logic component mainly performs relevant logical calculations (such as shift operations, logical operations, fixed-point or floating-point arithmetic operations and address operations, etc.), and the register component is used to temporarily store instructions, data and addresses.

[0103] The memory is a memory device and can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, which can include, but is not limited to, Windows system (an operating system), Linux (an operating system), etc. The present invention does not make any limitations in this regard. In addition, application programs required for functions can also be stored. For example, at least one instruction suitable for being loaded and executed by the processor is also stored in the storage space of this memory. These instructions can be one or more computer programs (including program codes). And the data storage area can store data created according to the use of the device, etc. Correspondingly, the memory can also include a memory controller to provide the processor with access to the memory.

[0104] The method embodiments provided by the embodiments of the present invention can be executed in electronic devices such as mobile terminals, computer terminals, servers, or similar computing devices. Figure 8 It is a hardware structure block diagram of an electronic device for a fume detection method provided by an embodiment of the present invention. As Figure 8 shown, the electronic device 800 can vary greatly due to different configurations or performances. It can include one or more central processing units (CPUs) 810 (the processor 810 can include, but is not limited to, processing devices such as microprocessor MCUs or programmable logic devices FPGAs), a memory 830 for storing data, and one or more storage media 820 (such as one or more mass storage devices) for storing application programs 823 or data 822. Among them, the memory 830 and the storage media 820 can be transient storage or persistent storage. The programs stored in the storage media 820 can include one or more modules, and each module can include a series of instruction operations on the electronic device. Further, the central processor 810 can be set to communicate with the storage media 820 and execute a series of instruction operations in the storage media 820 on the electronic device 800. The electronic device 800 can also include one or more power supplies 860, one or more wired or wireless network interfaces 850, one or more input / output interfaces 840, and / or one or more operating systems 821, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, and so on.

[0105] The input / output interface 840 can be used to receive or transmit data via a network. Specific examples of the above-mentioned network may include a wireless network provided by a communication provider of the electronic device 800. In one example, the input / output interface 840 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the input / output interface 840 can be a Radio Frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0106] Those of ordinary skill in the art can understand that Figure 8 The structure shown is only schematic and does not limit the structure of the above-mentioned electronic device. For example, the electronic device 800 may further include more or fewer components than those shown in Figure 8 or have a different configuration from that shown in Figure 8 shown.

[0107] An embodiment of the present invention also provides an oil fume machine, which includes a laser device and the above-mentioned oil fume detection device. The oil fume detection device performs oil fume detection based on the laser device; the laser device includes a transmitting component 1 and at least one receiving component 2 located on the same side of the space to be detected. The transmitting component 1 is used to emit line laser to the space to be detected, and the receiving component 2 is used to receive the optical signal of the line laser in the space to be detected.

[0108] Specifically, as Figure 3 shown, the transmitting component 1 includes a laser emitter 11 and a diffractive element 12. The laser emitter 11 is used to emit laser, and the diffractive element 12 is used to expand the laser into line laser to obtain the oil fume concentration in the entire space to be detected above the cooking range 3, greatly improving the detection range, avoiding missed detection, and improving both the detection accuracy and reliability; the receiving component 2 includes a receiver 22 and a condenser lens 21. The condenser lens 21 is at least used to converge light and adjust the receiving field of view angle of the receiving component 2. The light includes at least one of the reflected light and the scattered light after the line laser is reflected and scattered in the space to be detected; the receiver 22 is used to receive the optical signal of the light; thus, the optical signal in the space to be detected can be effectively received, which is beneficial to improving the detection accuracy and reliability.

[0109] An embodiment of the present invention further provides a storage medium, in which at least one instruction or at least one segment of program is stored, and the at least one instruction or the at least one segment of program is loaded and executed by a processor to implement the above-mentioned oil fume detection method; optionally, the storage medium may be located in at least one of multiple network servers in a computer network; in addition, the storage medium may include, but is not limited to, various storage media capable of storing program codes such as random access memory (RAM), read-only memory (ROM), non-volatile memory (NVM), USB flash drives, mobile hard disks, magnetic disk storage devices, flash memory devices, and other volatile solid-state storage devices.

[0110] According to one aspect of the present invention, there is provided a computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the methods provided in the above various optional implementation manners.

[0111] It should be noted that the above sequence of embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. And the above specific embodiments of this specification have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be executed in a different order than in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired result. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0112] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0113] The above description is only some embodiments of the present invention and is not used to limit the present invention. Those skilled in the art should understand that the present invention will have various changes and improvements, and any modifications, equivalent replacements, and improvements made in accordance with the present invention fall within the scope of protection required by the present invention.

Claims

1. An oil fume detection method, characterized in that, Applied to an oil fume machine, the oil fume machine includes a laser device, the laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected, the transmitting component is used to emit line laser to the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected; The method includes: When the transmitting component emits line laser, obtain the optical information collected by the receiving component; The optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, and the light intensity distribution state includes the distribution shape, distribution area and light intensity distribution of the light. When the light intensity distribution state indicated by the optical information is the scattered light state, based on the corresponding relationship between multiple preset scattered light intensities and multiple preset oil fume concentrations, determine the oil fume distribution information corresponding to the light intensity distribution of the optical information; The oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area and oil fume distribution concentration in the space to be detected.

2. The oil fume detection method according to claim 1, wherein The transmitting component can emit multiple line lasers with different emission angles to the space to be detected, and the space to be detected is the space projected above the cooking appliance by the receiving field angle of the receiving component. The method for obtaining the optical information includes: Control the transmitting component to emit multiple line lasers to the space to be detected from multiple emission angles respectively, and based on the receiving component to receive the optical signals of the multiple line lasers reflected or scattered by the substances in the space to be detected. Perform optical distribution state analysis based on the optical signals corresponding to the multiple line lasers to obtain the optical information.

3. The oil fume detection method according to claim 2, wherein, The optical signal is displayed as image information on the receiving component, and performing optical distribution state analysis based on the optical signals corresponding to the multiple line lasers to obtain the optical information includes: Perform image detection on the optical signal to detect the shape, area and light intensity distribution of the optical signal to obtain the optical information.

4. The oil fume detection method according to claim 1, wherein After obtaining the optical information collected by the receiving component when the transmitting component emits line laser, the method further includes: When the light intensity distribution state indicated by the optical information is reflected light, determine that there is an obstacle in the space to be detected and generate an obstacle reminder information.

5. The oil fume detection method according to claim 1, wherein The oil fume machine further includes a smoke machine, and the smoke machine includes a smoke machine control terminal; The method further includes: Send at least one of the optical information and the oil fume distribution information to the smoke machine control terminal, so that the smoke machine control terminal controls the suction operation state of the smoke machine according to at least one of the optical information and the oil fume distribution information.

6. The oil fume detection method according to claim 5, characterized in that, The smoke machine control terminal controls the suction operation state of the smoke machine according to at least one of the optical information and the oil fume distribution information includes: When the light intensity distribution state indicated by the optical information is the scattered light state, control the smoke machine to start. Based on the corresponding relationship between multiple preset scattered light intensities and multiple suction intensities, determine the target suction intensity corresponding to the optical information; and / or, based on the corresponding relationship between multiple preset oil fume concentrations and multiple suction intensities, determine the target suction intensity corresponding to the oil fume distribution information. The control end of the range hood controls the range hood to operate based on the operating parameters corresponding to the target suction intensity; When the light intensity distribution state indicated by the optical information is a non-scattered light state, control the range hood to turn off or maintain the range hood in a closed state.

7. An oil fume detection device, characterized in that, Applied to a range hood, the range hood includes a laser device, the laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected, the transmitting component is used to emit a line laser into the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected; the device includes: An information acquisition module, configured to acquire the optical information collected by the receiving component when the transmitting component emits a line laser; the optical information is used to indicate the light intensity distribution state of the optical signal received by the line laser from the space to be detected, and the light intensity distribution state includes the distribution shape, distribution area, and light intensity distribution of light; An oil fume information determination module, configured to determine the oil fume distribution information corresponding to the light intensity distribution of the optical information based on the corresponding relationship between a plurality of preset scattered light intensities and a plurality of preset oil fume concentrations when the light intensity distribution state indicated by the optical information is a scattered light state; the oil fume distribution information is used to indicate the oil fume distribution state in the space to be detected, and the oil fume distribution state includes the oil fume distribution shape, oil fume distribution area, and oil fume distribution concentration in the space to be detected.

8. An oil fume machine, characterized in that, It includes a laser device and the oil fume detection device as claimed in claim 7, and the oil fume detection device performs oil fume detection based on the laser device; The laser device includes a transmitting component and at least one receiving component located on the same side of the space to be detected, the transmitting component is used to emit a line laser into the space to be detected, and the receiving component is used to receive the optical signal of the line laser in the space to be detected.

9. The range hood according to claim 8, characterized in that, The transmitting component includes a laser emitter and a diffractive element, the laser emitter is used to emit a laser, and the diffractive element is used to expand the laser into a line laser; The receiving component includes a receiver and a condenser lens, and the condenser lens is at least used to converge light and adjust the receiving field of view angle of the receiving component, and the light includes at least one of the reflected light and the scattered light after the line laser is reflected and scattered in the space to be detected; the receiver is used to receive the optical signal of the light.

10. A storage medium, characterized in that, At least one instruction or at least one program is stored in the storage medium, and the at least one instruction or the at least one program is loaded and executed by a processor to implement the oil fume detection method as claimed in any one of claims 1-6.

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