Lampblack escape detection platform and lampblack escape detection method of range hood

Abstract

The invention discloses a lampblack escape detection platform and a lampblack escape detection method of a range hood. The lampblack escape detection platform comprises a light source module, a photoelectric detection module and a signal processing module, the light source module is arranged on the extractor hood and used for emitting an initial light beam; the photoelectric detection module is arranged on the oil smoke generation device, is positioned on a propagation path of the initial light beam, and is used for receiving a propagation light beam corresponding to the initial light beam when no oil smoke exists between the range hood and the oil smoke generation device; when oil fume exists between the range hood and the oil fume generating device, the transmission light beams penetrating through the oil fume are received; the signal processing module is electrically connected with the photoelectric detection module, and the signal processing module is used for carrying out photoelectric signal conversion processing on the propagation light beam and the transmission light beam so as to determine the lampblack escape amount of the range hood. The platform can effectively detect the oil smoke escape condition of the extractor hood with high precision, and can realize online detection of the oil smoke escape condition of the extractor hood.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of medium escape detection, and in particular to an oil fume escape detection platform and an oil fume escape detection method for a range hood. Background Art

[0002] Range hoods are a must-have in modern kitchens. Their function is to purify the oil smoke and discharge it outdoors, reducing the harm of oil smoke to the human body and the pollution to the indoor environment. In actual use, although the range hood can discharge most of the oil smoke generated during cooking, due to the open type of the range hood and the limited distance between the range hood and the stove, some oil smoke does not enter the range hood, but directly diffuses and escapes into the indoor environment.

[0003] At present, the amount of oil smoke escape is one of the important indicators for evaluating range hoods. The oil smoke escape can be tested to evaluate its oil smoke extraction effect. The oil smoke capture effect test and evaluation method of range hoods based on light scattering method is studied. The evaluation methods for detecting the capture effect of range hoods are sorted out one by one, including gas boiling water method, tracer gas method, image recognition method and multi-point sampling method. However, these four methods have the disadvantages of low accuracy, difficult to build a platform for actual detection solutions, and inability to cover the entire surface during escape surface detection. Summary of the invention

[0004] The embodiments of the present invention provide an oil fume escape detection platform and an oil fume escape detection method for a range hood. The construction of the oil fume escape detection platform is relatively simple, and the detection result of the oil fume escape detection platform is relatively accurate, which solves the problem that the oil fume escape detection platform of the escape surface of the range hood is difficult to construct, solves the problem that the oil fume concentration detection accuracy of the escape surface of the range hood is low, and solves the problem that the oil fume concentration detection of the escape surface of the range hood is not comprehensive enough.

[0005] In a first aspect, an embodiment of the present invention provides a range hood oil fume escape detection platform, comprising a light source module, a photoelectric detection module and a signal processing module;

[0006] The light source module is arranged on the range hood, and is used to emit an initial light beam;

[0007] The photoelectric detection module is arranged on the oil fume generating device, and the photoelectric detection module is located on the propagation path of the initial light beam, and the photoelectric detection module is used to receive the propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood and the oil fume generating device, and to receive the transmission light beam passing through the oil fume when there is oil fume between the range hood and the oil fume generating device;

[0008] The signal processing module is electrically connected to the photoelectric detection module, and the signal processing module is used to perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam to determine the amount of oil smoke escaping from the range hood.

[0009] Optionally, a beam modulation module is also included;

[0010] The beam modulation module is located on the propagation path of the initial light beam, and is used to collimate and focus the initial light beam and propagate it to the photoelectric detection module.

[0011] Optionally, the beam modulation module includes a collimating lens unit and a focusing lens unit;

[0012] The collimating lens unit is arranged on the range hood, and the collimating lens unit is located on the propagation path of the initial light beam, and the collimating lens unit is used to collimate the initial light beam to obtain a collimated light beam;

[0013] The focusing lens unit is arranged on the oil smoke generating device, and the focusing lens unit is located on the propagation path of the collimated light beam. The focusing lens unit is used for focusing the collimated light beam and propagating it to the photoelectric detection module.

[0014] Optionally, the receiving surface of the photoelectric detection module is located at the focal position of the focusing lens unit.

[0015] Optionally, a surface antifouling plate is also included;

[0016] The surface anti-fouling plate is located on the receiving surface side of the photoelectric detection module.

[0017] Optionally, a display output module is also included;

[0018] The display output module is electrically connected to the signal processing module, and the display output module is used to digitally display the amount of oil smoke escaping from the range hood.

[0019] In a second aspect, an embodiment of the present invention further provides a method for detecting oil fume escape of a range hood, and the method for detecting oil fume escape is performed by the oil fume escape detection platform for a range hood provided in any one of the first aspects;

[0020] The oil smoke escape detection method comprises:

[0021] Control the light source module to emit an initial light beam, and control the photoelectric detection module to receive a propagation light beam corresponding to the initial light beam;

[0022] Controlling the oil smoke generating device to generate oil smoke, and controlling the photoelectric detection module to receive a first transmission light beam that passes through the oil smoke;

[0023] Controlling the range hood to absorb the oil smoke, and controlling the photoelectric detection module to receive the second transmission light beam that passes through the oil smoke;

[0024] The propagation light beam, the first transmission light beam and the second transmission light beam are subjected to photoelectric signal conversion processing to determine the amount of oil smoke escaping from the range hood.

[0025] Optionally, performing photoelectric signal conversion processing on the propagation light beam, the first transmission light beam, and the second transmission light beam to determine the amount of oil smoke escaping from the range hood includes:

[0026] Performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal;

[0027] The amount of oil fume escaping from the range hood is determined according to the first electrical signal, the second electrical signal and the third electrical signal.

[0028] Optionally, determining the amount of oil fume escaped from the range hood according to the first electrical signal, the second electrical signal, and the third electrical signal includes:

[0029] According to the calculation formula Determine the amount of oil smoke escaping R of the range hood; wherein A represents the value of the first electrical signal, B represents the value of the second electrical signal, and C represents the value of the third electrical signal.

[0030] Optionally, performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal, comprises:

[0031] Within a first preset time range, performing photoelectric signal conversion processing on the propagating light beam to obtain a plurality of first intermediate electrical signals, and summing and averaging the plurality of first intermediate electrical signals to obtain a first electrical signal;

[0032] and / or, within a second preset time range, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a plurality of second intermediate electrical signals, and summing and averaging the plurality of second intermediate electrical signals to obtain a second electrical signal;

[0033] And / or, within a third preset time range, the second transmitted light beam is subjected to photoelectric signal conversion processing to obtain a plurality of third intermediate electrical signals, and the plurality of third intermediate electrical signals are summed and averaged to obtain a third electrical signal.

[0034] An embodiment of the present invention provides an oil fume escape detection platform and an oil fume escape detection method for a range hood, the oil fume escape detection platform comprising a light source module, a photoelectric detection module and a signal processing module; the light source module is arranged on the range hood, and the light source module is used to emit an initial light beam; the photoelectric detection module is arranged on the oil fume generating device, and the photoelectric detection module is located on the propagation path of the initial light beam, the photoelectric detection module is used to receive a propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood and the oil fume generating device, and to receive a transmission light beam that passes through the oil fume when there is oil fume between the range hood and the oil fume generating device; the signal processing module is electrically connected to the photoelectric detection module, and the signal processing module is used to perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam to determine the amount of oil fume escape from the range hood. The oil fume escape detection platform is based on the light transmission method. The light source module emits an initial light beam toward the escape surface of the range hood. After the oil fume absorbs or scatters the initial light beam, the electrical signal corresponding to the transmitted light beam received by the photoelectric detection module changes. Then, the oil fume escape amount of the range hood can be determined according to the detected propagation light beam and the electrical signal corresponding to the transmitted light beam. The construction of the oil fume escape detection platform is relatively simple, and the detection result of the oil fume escape detection platform is relatively accurate. It provides a structure with small volume, simple structure, low cost, and high precision and effective detection of the oil fume escape situation of the range hood, and can realize online detection of the oil fume escape situation of the range hood, solves the problem that the oil fume escape detection platform of the escape surface of the range hood is difficult to build, solves the problem of low accuracy of oil fume concentration detection on the escape surface of the range hood, and solves the problem of insufficient comprehensiveness of oil fume concentration detection on the escape surface of the range hood, which is conducive to realizing effective evaluation of the performance of the range hood and guiding the design and improvement of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a structural schematic diagram of an oil smoke escape detection platform for a range hood provided by an embodiment of the present invention;

[0037] Figure 2 It is a flow chart of a method for detecting oil smoke escape of a range hood provided by an embodiment of the present invention;

[0038] Figure 3 It is a flow chart of another method for detecting oil smoke escape of a range hood provided in an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 10-light source module; 20-photoelectric detection module; 30-signal processing module; 40-range hood; 50-oil fume generating device; 51-cooktop; 52-cookware; 60-beam modulation module; 61-collimating lens unit; 62-focusing lens unit; 70-surface anti-fouling plate; 80-display output module. DETAILED DESCRIPTION

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0042] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. It should be noted that the directional words such as "upper", "lower", "left", "right" and the like described in the embodiments of the present invention are described at the angles shown in the accompanying drawings and should not be understood as limitations on the embodiments of the present invention. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is formed "on" or "under" another element, it can not only be directly formed "on" or "under" another element, but also indirectly formed "on" or "under" another element through an intermediate element. The terms "first", "second", etc. are only used for descriptive purposes and do not represent any order, quantity or importance, but are only used to distinguish different components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific circumstances.

[0043] The term “including” and its variations used in the present invention are open inclusions, that is, “including but not limited to.” The term “based on” means “based at least in part on.” The term “one embodiment” means “at least one embodiment.”

[0044] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish the corresponding contents, and are not used to limit the order or interdependence.

[0045] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0046] The embodiment of the present invention provides a range hood oil fume escape detection platform, such as Figure 1As shown, the oil fume escape detection platform includes a light source module 10, a photoelectric detection module 20 and a signal processing module 30; the light source module 10 is arranged on the range hood 40, and the light source module 10 is used to emit an initial light beam; the photoelectric detection module 20 is arranged on the oil fume generating device 50, and the photoelectric detection module 20 is located on the propagation path of the initial light beam, the photoelectric detection module 20 is used to receive a propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood 40 and the oil fume generating device 50, and to receive a transmission light beam that passes through the oil fume when there is oil fume between the range hood 40 and the oil fume generating device 50; the signal processing module 30 is electrically connected to the photoelectric detection module 20, and the signal processing module 30 is used to perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam to determine the amount of oil fume escape from the range hood 40.

[0047] Specifically, the oil fume escape detection platform can detect the oil fume escape of the range hood 40 in real time and with high precision, and evaluate the working performance of the range hood 40, that is, detect the oil fume concentration of the escape surface of the range hood 40. The range hood 40 is the device to be detected by the oil fume escape detection platform, and the oil fume generating device 50 is the device that generates oil fume particles in the oil fume escape detection platform. For example, the oil fume generating device 50 can include a stove 51 and a pot 52, wherein the stove 51 can provide support for the pot 52, the pot 52 is fixedly arranged above the stove 51, and the pot 52 is fixedly arranged below the center of the smoke extraction surface of the range hood 40, and the pot 52 can generate oil fume particles. In addition, in order to facilitate the automatic generation of oil smoke and to facilitate the test of the escape of oil smoke, an oil-water spray device can also be set facing the pot 52. When oil smoke needs to be generated, the stove 51 can be controlled to start working according to the set firepower to heat the pot 52, and the oil-water spray device can be controlled to spray an oil-water mixture into the pot 52 to heat and generate oil smoke, simulating the application environment when the range hood 40 is working, and when it is necessary to absorb oil smoke, the range hood 40 can be controlled to start working according to the set wind force to absorb oil smoke particles. The oil smoke generating device 50 makes the test results closer to the user's use environment, and also makes the subsequent acquisition of the oil smoke escape situation of the range hood 40 more accurate. In addition, there is an oil smoke escape surface between the range hood 40 and the oil smoke generating device 50, and the oil smoke escape detection platform can be set corresponding to the escape surface of the range hood 40. Usually, the range hood 40 needs to be tested for the oil fume escape on the vertical escape surfaces on the front side and left and right sides of its shell to evaluate the oil fume extraction effect of the range hood 40, so as to avoid the situation where the oil fume escape is serious and affects the use effect when the product is installed in the user's home. By way of example, if there are several escape surfaces that need to realize the oil fume monitoring work, then several oil fume escape detection platforms are set up accordingly. Of course, only one oil fume escape detection platform can be used to test each escape surface position separately. The specific position of the oil fume escape detection platform is based on the coincidence of the light beam projection surface formed by the light source module 10 therein and the escape surface to be tested. This embodiment is only an example and is not limited here.

[0048] The oil fume escape detection platform includes a light source module 10, a photoelectric detection module 20 and a signal processing module 30. The light source module 10 is arranged on the range hood 40. For example, the front of the range hood 40 contains a support device for fixing the light source module 10. The light source module 10 can emit an initial light beam in the direction of the oil fume generating device 50 to form a corresponding light beam projection surface, so that the light beam projection surface covers the area between the range hood 40 and the oil fume generating device 50, so as to facilitate the detection of the oil fume escape situation, oil fume concentration, etc. of the range hood 40. For example, the light source module 10 can be a planar array laser. For example, the position of the light source module 10 can be reasonably set so that the corresponding light beam projection surface can coincide with the escape surface to be measured of the range hood 40. The photoelectric detection module 20 is located on the propagation path of the initial light beam. Based on the light transmission method, the photoelectric detection module 20 can receive the propagation light beam corresponding to the initial light beam when there is no oil smoke between the range hood 40 and the oil smoke generating device 50, and receive the transmission light beam that passes through the oil smoke when there is oil smoke between the range hood 40 and the oil smoke generating device 50, so as to facilitate the subsequent detection of the oil smoke escape of the range hood 40. The photoelectric detection module 20 is arranged on the oil smoke generating device 50. For example, the photoelectric detection module 20 can be arranged below the stove 51 or on the surface of the stove 51. For example, the photoelectric detection module 20 can be a photoelectric receiver.

[0049] Furthermore, the signal processing module 30 is electrically connected to the photoelectric detection module 20, and the photoelectric detection module 20 can transmit the received optical signals of the propagation light beam and the transmission light beam to the signal processing module 30, and the signal processing module 30 can perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam, and convert the optical signals of the propagation light beam and the transmission light beam into electrical signals, so as to facilitate analysis and processing based on the converted electrical signals, thereby realizing the detectability of the oil fume concentration and obtaining the corresponding oil fume escape amount of the escape surface of the range hood 40, that is, the molar concentration of the oil fume on the escape surface of the range hood 40. Exemplarily, the electrical signal obtained by converting the optical signal of the propagating light beam and the transmitted light beam can be light intensity. Based on the Beer-Lambert law, when light passes through particulate matter, the absorption and scattering of the particles will cause the attenuation of the light intensity. That is, when the oil fume particles pass through the beam projection surface corresponding to the light source module 10, the light intensity converted from the transmitted light beam received by the photoelectric detection module 20 will be attenuated (the attenuation here can be understood as the result of comparing the light intensity converted from the transmitted light beam with the light intensity converted from the propagating light beam). It can be understood that the attenuation degree is inversely proportional to the total mass of the oil fume particles passing through the beam projection surface. In this way, the signal processing module 30 can reversely calculate the concentration of the detected oil fume through the attenuation degree of the light intensity, and correspondingly obtain the escape situation of the oil fume on the escape surface to be monitored, thereby achieving the effect of high-precision measurement of the oil fume escape amount on the escape surface of the range hood 40. That is, the present embodiment designs a platform for detecting the light intensity of the light beam after passing through the oil smoke, and combines the hardware structure design and the software algorithm design to measure the escape situation / molar concentration of the oil smoke on the escape surface of the range hood 40, so as to evaluate the smoke extraction effect of the range hood 40. In addition, it should be noted that the photoelectric conversion efficiency of the signal processing module 30 for converting the optical signal into the electrical signal is related to its own device type / model, and the photoelectric conversion efficiency can be represented by the symbol η, and the unit is A / W, then the relationship between the electrical signal I output by the signal processing module 30 and the power P of the input optical signal can be represented by the following formula: I=η×P.

[0050] According to the technical solution in the embodiment of the present invention, the oil fume escape detection platform includes a light source module, a photoelectric detection module and a signal processing module; the light source module is arranged on the range hood, and the light source module is used to emit an initial light beam; the photoelectric detection module is arranged on the oil fume generating device, and the photoelectric detection module is located on the propagation path of the initial light beam, and the photoelectric detection module is used to receive a propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood and the oil fume generating device, and to receive a transmission light beam that passes through the oil fume when there is oil fume between the range hood and the oil fume generating device; the signal processing module is electrically connected to the photoelectric detection module, and the signal processing module is used to perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam to determine the amount of oil fume escape from the range hood. The oil fume escape detection platform is based on the light transmission method. The light source module emits an initial light beam toward the escape surface of the range hood. After the oil fume absorbs or scatters the initial light beam, the electrical signal corresponding to the transmitted light beam received by the photoelectric detection module changes. Then, the oil fume escape amount of the range hood can be determined according to the detected propagation light beam and the electrical signal corresponding to the transmitted light beam. The construction of the oil fume escape detection platform is relatively simple, and the detection result of the oil fume escape detection platform is relatively accurate. It provides a structure with small volume, simple structure, low cost, and high precision and effective detection of the oil fume escape situation of the range hood, and can realize online detection of the oil fume escape situation of the range hood, solves the problem that the oil fume escape detection platform of the escape surface of the range hood is difficult to build, solves the problem of low accuracy of oil fume concentration detection on the escape surface of the range hood, and solves the problem of insufficient comprehensiveness of oil fume concentration detection on the escape surface of the range hood, which is conducive to realizing effective evaluation of the performance of the range hood and guiding the design and improvement of the range hood.

[0051] Optionally, continue to refer to Figure 1 The oil fume escape detection platform also includes a beam modulation module 60; the beam modulation module 60 is located on the propagation path of the initial light beam, and the beam modulation module 60 is used to collimate and focus the initial light beam and propagate it to the photoelectric detection module 20.

[0052] Specifically, the oil fume escape detection platform includes a light source module 10, a photoelectric detection module 20, a signal processing module 30 and a beam modulation module 60. The beam modulation module 60 is located on the propagation path of the initial light beam, and the beam modulation module 60 can collimate and focus the initial light beam emitted by the light source module 10, and finally propagate it to the photoelectric detection module 20. Exemplarily, the beam modulation module 60 can make the light beam projection surface corresponding to the light source module 10 parallel to the escape surface to be tested of the range hood 40 through optical principles, and make the transmitted light beam passing through the escape surface to be tested of the range hood 40 focus on the receiving surface of the photoelectric detection module 20. In this way, the setting of the beam modulation module 60 can regulate the beam quality and propagation direction of the initial light beam emitted by the light source module 10, which is conducive to saving the overall space of the oil fume escape detection platform and reducing the occupied volume. It can also appropriately change the setting positions of the light source module 10 and the photoelectric detection module 20, effectively improving the detection accuracy of the oil fume escape detection platform.

[0053] Further, continue to refer to Figure 1 The beam modulation module 60 includes a collimating lens unit 61 and a focusing lens unit 62; the collimating lens unit 61 is arranged on the range hood 40, and the collimating lens unit 61 is located on the propagation path of the initial light beam, and the collimating lens unit 61 is used to collimate the initial light beam to obtain a collimated light beam; the focusing lens unit 62 is arranged on the oil fume generating device 50, and the focusing lens unit 62 is located on the propagation path of the collimated light beam, and the focusing lens unit 62 is used to focus the collimated light beam and propagate it to the photoelectric detection module 20.

[0054] Specifically, the collimating lens unit 61 is located on the propagation path of the initial light beam, and the collimating lens unit 61 can collimate the initial light beam to obtain a collimated light beam, which can parallelly cover the escape surface to be tested of the range hood 40, so as to solve the problem that the detection of the oil fume concentration of the escape surface of the range hood 40 is not comprehensive enough. The collimating lens unit 61 is arranged on the range hood 40, and exemplarily, the collimating lens unit 61 can be arranged at the lower edge of the front of the range hood 40. And the focusing lens unit 62 is located on the propagation path of the collimated light beam, and the focusing lens unit 62 can focus the collimated light beam, so that the transmitted light beam passing through the escape surface to be tested of the range hood 40 is focused on the receiving surface of the photoelectric detection module 20, which effectively improves the optical signal receiving capability of the photoelectric detection module 20, thereby improving the detection accuracy of the oil fume escape detection platform. The focusing lens unit 62 is arranged on the oil fume generating device 50, and exemplarily, the focusing lens unit 62 can be arranged at the front edge of the stove 51.

[0055] Optionally, continue to refer to Figure 1, the receiving surface of the photoelectric detection module 20 is located at the focal position of the focusing lens unit 62. In this way, the optical signal receiving capability of the photoelectric detection module 20 is effectively improved, thereby improving the detection accuracy of the oil smoke escape detection platform.

[0056] Optionally, continue to refer to Figure 1 The oil fume escape detection platform also includes a surface anti-fouling plate 70 ; the surface anti-fouling plate 70 is located on one side of the receiving surface of the photoelectric detection module 20 .

[0057] Specifically, the surface anti-fouling plate 70 can isolate the oil fume stains generated in the detection of oil fume escape from most areas of the receiving surface of the photoelectric detection module 20, effectively improving the accuracy of oil fume concentration detection of the entire oil fume escape detection platform and outputting it to the photoelectric detection module 20. The surface anti-fouling plate 70 is also located on the propagation path of the initial light beam. For example, the surface anti-fouling plate 70 can be set below the stove 51 or on the surface of the stove 51.

[0058] Optionally, continue to refer to Figure 1 The oil fume escape detection platform also includes a display output module 80 ; the display output module 80 is electrically connected to the signal processing module 30 , and the display output module 80 is used to digitally display the oil fume escape amount of the range hood 40 .

[0059] Specifically, the signal processing module 30 can be understood as a hub device connecting the oil fume escape detection platform and the display output module 80. The signal processing module 30 can be electrically connected to the display output module 80 through a data line. The display output module 80 can be understood as a storage module of the host computer and the software algorithm. After the signal processing module 30 determines the oil fume escape amount of the range hood 40, the display output module 80 can also digitally display the oil fume escape amount of the range hood 40, so that relevant staff can timely know the oil fume escape situation of the escape surface of the range hood 40, which brings convenience to relevant staff.

[0060] Based on the same inventive concept, an embodiment of the present invention further provides a method for detecting oil fume escape of a range hood, which is executed by the oil fume escape detection platform of the range hood provided in any one of the embodiments of the present invention, and the oil fume escape detection method can evaluate the oil fume escape amount of the range hood. Figure 2 As shown, the oil smoke escape detection method includes:

[0061] S110, controlling the light source module to emit an initial light beam, and controlling the photoelectric detection module to receive a propagation light beam corresponding to the initial light beam.

[0062] Specifically, continue to refer to Figure 1The light source module 10 is disposed on the range hood 40. The light source module 10 can emit an initial light beam toward the direction of the oil fume generating device 50 to form a corresponding light beam projection surface, so that the light beam projection surface covers the area between the range hood 40 and the oil fume generating device 50, so as to facilitate the detection of the oil fume escape situation and oil fume concentration of the range hood 40. For example, the position of the light source module 10 can be reasonably set so that the corresponding light beam projection surface can coincide with the escape surface to be detected of the range hood 40. The photoelectric detection module 20 is disposed on the oil fume generating device 50. The photoelectric detection module 20 is located on the propagation path of the initial light beam. Based on the light transmission method, the photoelectric detection module 20 can receive the propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood 40 and the oil fume generating device 50, and receive the transmission light beam that passes through the oil fume when there is oil fume between the range hood 40 and the oil fume generating device 50, so as to facilitate the subsequent detection of the oil fume escape situation of the range hood 40.

[0063] Before turning on the range hood 40 and the oil fume generating device 50, it is necessary to first turn on the light source module 10 and the photoelectric detection module 20, and control the light source module 10 to emit an initial light beam. The photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is no oil fume between the range hood 40 and the oil fume generating device 50. The photoelectric detection module 20 can receive a propagation light beam corresponding to the initial light beam, so that the light signal of the propagation light beam can be used as a standard value for comparison to analyze and determine the oil fume escape situation on the escape surface of the range hood 40.

[0064] S120, controlling the oil smoke generating device to generate oil smoke, and controlling the photoelectric detection module to receive a first transmitted light beam that passes through the oil smoke.

[0065] Specifically, continue to refer to Figure 1 After the photoelectric detection module 20 receives the propagation light beam corresponding to the initial light beam, the oil fume generating device 50 can be turned on to make the oil fume generating device 50 generate oil fume. For example, the oil fume generating device 50 can include a stove 51 and a pot 52, wherein the stove 51 can provide support for the pot 52, the pot 52 is fixedly arranged above the stove 51, and the pot 52 is fixedly arranged below the middle of the smoke-absorbing surface of the range hood 40, and the pot 52 can generate oil fume particles. In addition, in order to facilitate the automatic generation of oil fume and to facilitate the test of the escape of oil fume, an oil-water injection device can also be arranged facing the pot 52. When oil fume needs to be generated, the stove 51 can be controlled to start working according to the set firepower to heat the pot 52, and the oil-water injection device can be controlled to spray an oil-water mixture into the pot 52 to heat and generate oil fume, simulating the application environment when the range hood 40 is working. The oil fume generating device 50 enables the test result to be closer to the user's usage environment, and also makes the oil fume escape situation of the range hood 40 obtained subsequently more accurate.

[0066] At the same time, the light source module 10 and the photoelectric detection module 20 are still turned on, the light source module 10 can continue to emit the initial light beam, the photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is oil smoke between the range hood 40 and the oil smoke generating device 50, and the photoelectric detection module 20 can receive the first transmitted light beam through the oil smoke.

[0067] S130, controlling the range hood to absorb the oil smoke, and controlling the photoelectric detection module to receive the second transmitted light beam that passes through the oil smoke.

[0068] Specifically, continue to refer to Figure 1 After the photoelectric detection module 20 receives the first transmitted light beam through the oil smoke, the range hood 40 can be turned on to make the range hood 40 absorb the oil smoke. For example, when it is necessary to absorb the oil smoke, the range hood 40 can be controlled to work according to the set wind force to absorb the oil smoke particles. At the same time, the light source module 10 and the photoelectric detection module 20 are still turned on, the light source module 10 can continue to emit the initial light beam, the photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is oil smoke between the range hood 40 and the oil smoke generating device 50, most of which has been absorbed by the range hood 40, and the oil smoke concentration passing through the escape surface of the range hood 40 is rapidly reduced, and the photoelectric detection module 20 can receive the second transmitted light beam through the oil smoke.

[0069] S140, performing photoelectric signal conversion processing on the propagation light beam, the first transmission light beam and the second transmission light beam to determine the amount of oil smoke escaping from the range hood.

[0070] Specifically, continue to refer to Figure 1The signal processing module 30 is electrically connected to the photoelectric detection module 20, and the photoelectric detection module 20 can transmit the received optical signals of the propagation light beam, the first transmission light beam and the second transmission light beam to the signal processing module 30. The signal processing module 30 can perform photoelectric signal conversion processing on the propagation light beam, the first transmission light beam and the second transmission light beam respectively, and convert the optical signals of the propagation light beam, the first transmission light beam and the second transmission light beam into electrical signals, so as to analyze and process the electrical signals obtained by the conversion, realize the detectability of the oil fume concentration, and obtain the corresponding oil fume escape amount of the escape surface of the range hood 40, that is, the oil fume molar concentration of the escape surface of the range hood 40. Exemplarily, the electrical signal obtained by converting the optical signals of the propagating light beam, the first transmitted light beam and the second transmitted light beam can be light intensity. Based on the Lambert-Beer law, when light passes through particulate matter, the absorption and scattering of the particles will cause the attenuation of the light intensity. That is, when the oil fume particles pass through the beam projection surface corresponding to the light source module 10, the light intensity converted from the transmitted light beam received by the photoelectric detection module 20 will be attenuated (the attenuation here can be understood as the result of comparing the light intensity converted from the transmitted light beam with the light intensity converted from the propagating light beam). In this way, the signal processing module 30 can reversely calculate the concentration of the detected oil fume by the attenuation degree of the light intensity, and correspondingly obtain the escape situation of the oil fume on the escape surface to be monitored, thereby achieving the effect of high-precision measurement of the amount of oil fume escaped from the escape surface of the range hood 40.

[0071] Further, the photoelectric detection module 20 can perform photoelectric signal conversion processing on the propagating light beam, which corresponds to the situation where there is no oil smoke between the range hood 40 and the oil smoke generating device 50. The electric signal obtained by converting the optical signal of the propagating light beam can be understood as the lowest point of the oil smoke concentration on the escape surface of the range hood 40, that is, the initial value. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the first transmitted light beam, which corresponds to the situation where there is oil smoke between the range hood 40 and the oil smoke generating device 50 and the range hood 40 is not turned on. The electric signal obtained by converting the optical signal of the first transmitted light beam can be understood as the highest point of the oil smoke concentration on the escape surface of the range hood 40. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the second transmitted light beam, which corresponds to the situation where there is oil smoke between the range hood 40 and the oil smoke generating device 50 and the range hood 40 absorbs most of the oil smoke after being turned on. The electric signal obtained by converting the optical signal of the second transmitted light beam can be understood as the middle value of the oil smoke concentration on the escape surface, which is between the lowest point and the highest point. Subsequently, the amount of oil smoke escaping from the range hood 40 may be determined based on an electrical signal obtained by performing photoelectric signal conversion processing on the propagating light beam, the first transmitted light beam, and the second transmitted light beam.

[0072] The technical solution in the embodiment of the present invention first controls the light source module to emit an initial light beam, and controls the photoelectric detection module to receive a propagation light beam corresponding to the initial light beam, then controls the oil fume generating device to generate oil fume, and controls the photoelectric detection module to receive a first transmitted light beam passing through the oil fume, then controls the range hood to absorb oil fume, and controls the photoelectric detection module to receive a second transmitted light beam passing through the oil fume, and finally performs photoelectric signal conversion processing on the propagation light beam, the first transmitted light beam and the second transmitted light beam to determine the amount of oil fume escaped from the range hood. Utilizing the above method, based on the light transmission method, the light source module emits an initial light beam toward the escape surface of the range hood. Due to the absorption or scattering of the initial light beam by the oil smoke, the electrical signal corresponding to the transmitted light beam received by the photoelectric detection module changes. Then, the amount of oil smoke escaping from the range hood can be determined based on the detected propagation light beam and the electrical signal corresponding to the transmitted light beam. The oil smoke escape situation of the range hood can be effectively detected with high precision, and the online detection of the oil fume escape situation of the range hood can be realized. The problem that the oil fume escape detection platform of the escape surface of the range hood is difficult to build, the problem that the oil fume concentration detection accuracy of the escape surface of the range hood is low, and the problem that the oil fume concentration detection of the escape surface of the range hood is not comprehensive enough is solved. This is conducive to the effective evaluation of the performance of the range hood and to guiding the design and improvement of the range hood.

[0073] The embodiment of the present invention further provides another method for detecting oil fume escape of a range hood, and this embodiment is optimized on the basis of the above embodiment. Optionally, the propagation light beam, the first transmission light beam and the second transmission light beam are subjected to photoelectric signal conversion processing to determine the oil fume escape amount of the range hood, including:

[0074] Performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal;

[0075] The amount of oil fume escaping from the range hood is determined according to the first electrical signal, the second electrical signal and the third electrical signal.

[0076] For details not yet provided in this embodiment, please refer to the above embodiments. Figure 3 As shown, the oil smoke escape detection method includes:

[0077] S210, controlling the light source module to emit an initial light beam, and controlling the photoelectric detection module to receive a propagation light beam corresponding to the initial light beam.

[0078] S220, controlling the oil smoke generating device to generate oil smoke, and controlling the photoelectric detection module to receive a first transmission light beam that passes through the oil smoke.

[0079] S230, controlling the range hood to absorb the oil smoke, and controlling the photoelectric detection module to receive the second transmitted light beam that passes through the oil smoke.

[0080] S240, performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal.

[0081] Optionally, the propagating light beam is subjected to photoelectric signal conversion processing to obtain a first electric signal, the first transmitted light beam is subjected to photoelectric signal conversion processing to obtain a second electric signal, and the second transmitted light beam is subjected to photoelectric signal conversion processing to obtain a third electric signal, including: within a first preset time range, the propagating light beam is subjected to photoelectric signal conversion processing to obtain multiple first intermediate electric signals, and the multiple first intermediate electric signals are summed and averaged to obtain the first electric signal; and / or, within a second preset time range, the first transmitted light beam is subjected to photoelectric signal conversion processing to obtain multiple second intermediate electric signals, and the multiple second intermediate electric signals are summed and averaged to obtain the second electric signal; and / or, within a third preset time range, the second transmitted light beam is subjected to photoelectric signal conversion processing to obtain multiple third intermediate electric signals, and the multiple third intermediate electric signals are summed and averaged to obtain the third electric signal.

[0082] Specifically, within the first preset time range, the light source module 10 and the photoelectric detection module 20 are turned on at the same time, the light source module 10 can continuously emit the initial light beam, the photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is no oil smoke between the range hood 40 and the oil smoke generating device 50, and the photoelectric detection module 20 can receive the propagation light beam corresponding to the initial light beam. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the propagation light beam. At this time, the propagation light beam can be understood as an optical signal corresponding to the spectrum within a period of time, which can be converted to obtain a plurality of first intermediate electrical signals. Afterwards, the plurality of first intermediate electrical signals obtained by conversion can also be summed and averaged to obtain the required value of the first electrical signal. By way of example, the first preset time range can be determined according to the actual operation of the oil smoke escape detection platform. By way of example, the first preset time range can be 10 minutes.

[0083] Similarly, within the second preset time range, the light source module 10 and the photoelectric detection module 20 are still turned on, the light source module 10 can continue to emit the initial light beam, the photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is oil smoke between the range hood 40 and the oil smoke generating device 50, and the range hood 40 is not turned on, and the photoelectric detection module 20 can receive the first transmitted light beam that passes through the oil smoke. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the first transmitted light beam. At this time, the first transmitted light beam can be understood as an optical signal corresponding to the spectrum within a period of time, which can be converted to obtain multiple second intermediate electrical signals. Afterwards, the multiple second intermediate electrical signals obtained by conversion can also be summed and averaged to obtain the required value of the second electrical signal. For example, the second preset time range can be determined according to the actual operation of the oil smoke escape detection platform. For example, the second preset time range can be 10 minutes.

[0084] And, within the third preset time range, the light source module 10 and the photoelectric detection module 20 are still turned on, the light source module 10 can continue to emit the initial light beam, the photoelectric detection module 20 is located on the propagation path of the initial light beam, and at this time there is oil smoke between the range hood 40 and the oil smoke generating device 50, and the range hood 40 absorbs most of the oil smoke after being turned on, and the photoelectric detection module 20 can receive the second transmitted light beam that passes through the oil smoke. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the second transmitted light beam. At this time, the second transmitted light beam can be understood as an optical signal corresponding to the spectrum within a period of time, which can be converted to obtain multiple third intermediate electrical signals. Afterwards, the multiple converted third intermediate electrical signals can also be summed and averaged to obtain the required value of the third electrical signal. Exemplarily, the third preset time range can be determined according to the actual operation of the oil smoke escape detection platform. Exemplarily, the third preset time range can be 10 minutes. It should also be noted that, in this embodiment, the values ​​of the first preset time range, the second preset time range, and the third preset time range are only examples and are not limited here. This embodiment also does not limit the size relationship between the first preset time range, the second preset time range, and the third preset time range. The values ​​of the first preset time range, the second preset time range, and the third preset time range may be the same or different, and the values ​​of the first preset time range, the second preset time range, and the third preset time range may be set as needed.

[0085] S250: Determine the amount of oil fume escaping from the range hood according to the first electrical signal, the second electrical signal, and the third electrical signal.

[0086] Optionally, determining the amount of oil smoke escaping from the range hood according to the first electrical signal, the second electrical signal and the third electrical signal includes: according to the calculation formula Determine the amount of oil smoke escaping R of the range hood; wherein A represents the value of the first electrical signal, B represents the value of the second electrical signal, and C represents the value of the third electrical signal.

[0087] Specifically, continue to refer to Figure 1 , the photoelectric detection module 20 can perform photoelectric signal conversion processing on the propagating light beam to obtain a first electric signal, and the value of the first electric signal is A, which corresponds to the situation where there is no oil smoke between the range hood 40 and the oil smoke generating device 50. For example, the first electric signal can be a light intensity signal. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the first transmitted light beam to obtain a second electric signal, and the value of the second electric signal is B, which corresponds to the situation where there is oil smoke between the range hood 40 and the oil smoke generating device 50, and the range hood 40 is not turned on. For example, the second electric signal can be a light intensity signal. The photoelectric detection module 20 can perform photoelectric signal conversion processing on the second transmitted light beam to obtain a third electric signal, and the value of the third electric signal is C, which corresponds to the situation where there is oil smoke between the range hood 40 and the oil smoke generating device 50, and the range hood 40 absorbs most of the oil smoke after being turned on. For example, the third electric signal can be a light intensity signal. In this way, according to the calculation formula The oil fume escape amount R of the range hood 40 is determined.

[0088] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A range hood oil fume escape detection platform, characterized in that: It comprises a light source module (10), a photoelectric detection module (20) and a signal processing module (30); The light source module (10) is arranged on the range hood (40), and the light source module (10) is used to emit an initial light beam; The photoelectric detection module (20) is arranged on the oil fume generating device (50), and the photoelectric detection module (20) is located on the propagation path of the initial light beam, and the photoelectric detection module (20) is used to receive a propagation light beam corresponding to the initial light beam when there is no oil fume between the range hood (40) and the oil fume generating device (50), and to receive a transmission light beam that passes through the oil fume when there is oil fume between the range hood (40) and the oil fume generating device (50); The signal processing module (30) is electrically connected to the photoelectric detection module (20), and the signal processing module (30) is used to perform photoelectric signal conversion processing on the propagation light beam and the transmission light beam to determine the amount of oil smoke escaping from the range hood (40).

2. The oil fume escape detection platform according to claim 1, characterized in that: Also includes a beam modulation module (60); The light beam modulation module (60) is located on the propagation path of the initial light beam, and the light beam modulation module (60) is used to collimate and focus the initial light beam, and propagate it to the photoelectric detection module (20).

3. The oil fume escape detection platform according to claim 2, characterized in that: The light beam modulation module (60) comprises a collimating lens unit (61) and a focusing lens unit (62); The collimating lens unit (61) is arranged on the range hood (40), and the collimating lens unit (61) is located on the propagation path of the initial light beam, and the collimating lens unit (61) is used to collimate the initial light beam to obtain a collimated light beam; The focusing lens unit (62) is arranged on the oil fume generating device (50), and the focusing lens unit (62) is located on the propagation path of the collimated light beam. The focusing lens unit (62) is used to focus the collimated light beam and propagate it to the photoelectric detection module (20).

4. The oil fume escape detection platform according to claim 3, characterized in that: The receiving surface of the photoelectric detection module (20) is located at the focal position of the focusing lens unit (62).

5. The oil fume escape detection platform according to claim 1, characterized in that: Also included is a surface antifouling plate (70); The surface anti-fouling plate (70) is located on one side of the receiving surface of the photoelectric detection module (20).

6. The oil fume escape detection platform according to claim 1, characterized in that: Also includes a display output module (80); The display output module (80) is electrically connected to the signal processing module (30), and the display output module (80) is used to digitally display the amount of oil smoke escaping from the range hood (40).

7. A method for detecting oil smoke escape from a range hood, characterized in that: The oil fume escape detection method is performed by an oil fume escape detection platform of a range hood according to any one of claims 1 to 6; The oil smoke escape detection method comprises: Controlling the light source module (10) to emit an initial light beam, and controlling the photoelectric detection module (20) to receive a propagation light beam corresponding to the initial light beam; Controlling the oil smoke generating device (50) to generate oil smoke, and controlling the photoelectric detection module (20) to receive a first transmission light beam that passes through the oil smoke; Controlling the range hood (40) to absorb the oil smoke, and controlling the photoelectric detection module (20) to receive a second transmission light beam that passes through the oil smoke; The propagation light beam, the first transmission light beam and the second transmission light beam are subjected to photoelectric signal conversion processing to determine the amount of oil smoke escaping from the range hood (40).

8. The method for detecting oil smoke escape according to claim 7, characterized in that: The propagation light beam, the first transmission light beam and the second transmission light beam are subjected to photoelectric signal conversion processing to determine the amount of oil smoke escaping from the range hood (40), comprising: Performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal; The amount of oil fume escaping from the range hood (40) is determined based on the first electrical signal, the second electrical signal and the third electrical signal.

9. The method for detecting oil smoke escape according to claim 8, characterized in that: Determining the amount of oil smoke escaping from the range hood (40) according to the first electrical signal, the second electrical signal and the third electrical signal, comprises: According to the calculation formula The oil fume escape amount R of the range hood (40) is determined; wherein A represents the value of the first electrical signal, B represents the value of the second electrical signal, and C represents the value of the third electrical signal.

10. The method for detecting oil smoke escape according to claim 8, characterized in that: The method includes performing photoelectric signal conversion processing on the propagating light beam to obtain a first electrical signal, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a second electrical signal, and performing photoelectric signal conversion processing on the second transmitted light beam to obtain a third electrical signal, including: Within a first preset time range, performing photoelectric signal conversion processing on the propagating light beam to obtain a plurality of first intermediate electrical signals, and summing and averaging the plurality of first intermediate electrical signals to obtain the first electrical signal; and / or, within a second preset time range, performing photoelectric signal conversion processing on the first transmitted light beam to obtain a plurality of second intermediate electrical signals, and summing and averaging the plurality of second intermediate electrical signals to obtain the second electrical signal; And / or, within a third preset time range, the second transmitted light beam is subjected to photoelectric signal conversion processing to obtain a plurality of third intermediate electrical signals, and the plurality of third intermediate electrical signals are summed and averaged to obtain the third electrical signal.

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