Device capable of regulating and controlling fragrance application state distribution, control system and control method

Abstract

The invention discloses a device, a control system and a control method capable of regulating and controlling perfume application matter state distribution, the device comprises a base, a perfume storage tank is arranged below the base, an atomization cavity is formed in the base, array atomizers are arranged in the atomization cavity, transmission wheel assemblies are arranged on the two sides of the atomization cavity, and the transmission wheel assemblies are used for conveying slices into the atomization cavity for perfume application; the slice applied with the perfume is conveyed to the outside of the atomization cavity; an extraction device is arranged between the atomization cavity and the perfume storage tank and is used for extracting perfume in the perfume storage tank into the atomization cavity; a camera is arranged on one side of the sheet outlet end of the atomization cavity and used for collecting a sheet image obtained after perfuming. According to the device, the control system and the control method, the atomization amount can be continuously adjusted through parameters such as the power and the frequency of the array unit, closed-loop control is formed in cooperation with the camera, the motion state of the perfume liquid and the perfume application requirement are accurately matched, and the uniformity and the stability of perfume application are improved.

Description

Technical Field

[0001] This invention relates to the field of tobacco flavoring technology, and more specifically, to a device, control system, and control method for adjusting the distribution of flavoring substances. Background Technology

[0002] In fields requiring precise flavoring, such as tobacco sheet processing and production, the uniformity and stability of flavoring application directly affect the sensory quality and functional characteristics of the product. In traditional flavoring processes, syringes and droppers are the most widely used flavoring tools, which apply liquid flavoring to the target carrier of tobacco sheets in fixed doses through mechanical or pneumatic methods.

[0003] However, this method has insurmountable technical limitations: From a physical distribution perspective, the liquid dispensing method of the syringe dropper is a "point-drop" process, where liquid fragrance easily forms locally aggregated droplets on the thin sheet surface. Even with subsequent liquid diffusion, it is difficult to eliminate the concentration gradient caused by the uneven initial distribution, resulting in uneven fragrance release and significant differences in fragrance retention time. From a control flexibility perspective, the dosage adjustment of the syringe dropper mainly depends on the tube diameter and dispensing speed, and cannot respond in real-time to the dynamic movement of the carrier (such as strip conveyors in continuous production lines). When the carrier speed fluctuates or there are material differences, the deviation rate of fragrance application is large. Furthermore, for scenarios requiring differentiated fragrance application to multiple areas, traditional syringes require complex mechanical movement, resulting in bulky equipment, low switching efficiency, and difficulty in meeting the demands of high-precision, high-dynamic production. With increasing requirements for consistency in product manufacturing processes, the shortcomings of traditional fragrance application methods in terms of physical distribution uniformity, real-time parameter control, and adaptability to multiple scenarios are becoming increasingly apparent.

[0004] Therefore, there is an urgent need for a device, control system, and control method that can regulate the distribution of fragrance substances. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus, control system, and control method for adjusting the distribution of fragrance materials, so as to solve the problems in the prior art and improve the uniformity and stability of fragrance application.

[0006] This invention provides a device for adjusting the distribution of fragrance substances, comprising:

[0007] The base has a fragrance storage tank for containing liquid fragrance. An atomizing chamber is mounted on the base, and an array of atomizers is installed within the atomizing chamber. Drive wheel assemblies are located on both sides of the atomizing chamber to transport a thin sheet into the atomizing chamber for fragrance application and to transport the fragrance-applied sheet out of the atomizing chamber. An extraction device is located between the atomizing chamber and the fragrance storage tank to extract the fragrance from the storage tank into the atomizing chamber. A camera is installed on one side of the sheet outlet of the atomizing chamber to capture images of the sheet after fragrance application through the atomizing chamber.

[0008] In the device for adjustable fragrance distribution as described above, preferably, the array atomizer includes five atomizers arranged in parallel, with equal spacing between adjacent atomizers, and each atomizer is an ultrasonic atomizer.

[0009] The inlet and outlet ends of the atomizing chamber are respectively provided with sliding cylinders;

[0010] A light source is provided on one side of the camera.

[0011] In the device for adjustable fragrance distribution as described above, preferably, a filter screen and a collection tank are arranged from top to bottom in the atomizing chamber, wherein the filter screen is used to filter residual fragrance liquid after atomization; and the collection tank is used to collect filtered fragrance droplets that have not been applied to the sheet.

[0012] The bottom of the atomizing chamber is provided with a liquid guide tube, and the lower end of the liquid guide tube is inserted into the fragrance storage tank for guiding the filtered fragrance liquid collected in the collection pool back to the fragrance storage tank.

[0013] In the device for adjusting the distribution of fragrance as described above, preferably, the top of the fragrance storage tank is provided with a storage tank cover; and the top of the atomizing chamber is provided with an atomizing chamber cover.

[0014] The present invention also provides a control system for adjustable fragrance distribution including the above-mentioned device. The control system for adjustable fragrance distribution further includes a controller for controlling the working state of the array atomizer according to the fragrance distribution on the thin film image captured by the camera.

[0015] A drive module is provided between the controller and the array atomizer for driving the opening and closing of each atomizer in the array atomizer.

[0016] The present invention also provides a control method for adjustable fragrance distribution using the above-mentioned control system, comprising the following steps:

[0017] Based on the images captured by the camera, the thin-film atomization area is dynamically mapped and partitioned;

[0018] Based on the results of the dynamic mapping partitioning, calculate the amount of liquid applied for the spice and the coverage.

[0019] The uniformity of spice application is calculated based on the calculated amount of liquid applied and the coverage rate.

[0020] Based on the calculation results of the uniformity of spice application, the deviation of the uniformity of spice application is corrected;

[0021] The power of the array atomizer is adjusted based on the deviation correction result of the fragrance application uniformity.

[0022] The control method for adjustable fragrance distribution described above, preferably, involves dynamically mapping and partitioning the thin-film atomization region based on the image captured by the camera, including:

[0023] To calculate the displacement of the thin plate, the distance the thin plate moves is calculated using the following formula when acquiring the k-th frame image:

[0024] (1)

[0025] in, Indicates the distance the thin sheet has moved. This indicates the speed at which the thin sheet is conveyed, measured in cm / s. This represents the acquisition time of the k-th frame image, in seconds;

[0026] Atomization zone mapping: The atomization area formed by the array atomizer acting on the thin film is updated synchronously during the film conveying process, and is calculated using the following formula. The area of ​​the atomization region corresponding to a single atomizer of the array atomizer within a continuous 20-frame range. :

[0027] [ , (2)

[0028] in, This represents the i-th atomization region. Indicates the overall width of the thin slice. For the partition corresponding to the i-th atomizer in the array atomizer, [ , ]express The film can be continuously transmitted over a distance of 20 frames per second.

[0029] The control method for adjustable fragrance physical distribution as described above, preferably, includes the following step: calculating the amount of fragrance liquid applied and the coverage based on the dynamic mapping zoning results, which includes:

[0030] Calculate the cumulative amount of fragrance liquid in a single frame: In the k-th frame image, calculate the i-th atomization region using the following formula. Cumulative liquid volume inside:

[0031] (3)

[0032] in, This represents the grayscale-to-quality conversion factor, obtained through calibration experiments. Indicates the grayscale of the thin film background. This represents the grayscale value at coordinates (x, y) in the k-th frame of the image;

[0033] Calculate the cumulative amount of spice liquid per unit time, assuming the camera's acquisition frequency is 20Hz, and select... The cumulative amount of spice liquid in a single frame approaching frame 20 is summed using the following formula:

[0034] (4)

[0035] in, Represents the i-th atomization region Up to the time of image acquisition of the kth frame The cumulative volume of liquid, in mg;

[0036] Calculate the fragrance application coverage of a single atomizer in an atomizer array: The fragrance application coverage of a single atomizer is calculated based on the proportion of liquid pixels to the total number of pixels with fragrance application coverage in the entire image, expressed by the following formula:

[0037] (5)

[0038] in, Indicates the fragrance application coverage of a single atomizer. The grayscale value represents the background color of the thin slice, and T represents the segmentation threshold. Indicates the fragrance application coverage of a single atomizer. This indicates the total number of pixels covered by the fragrance application for a single atomizer. This represents the total number of pixels in the entire image.

[0039] The control method for adjustable fragrance distribution as described above, preferably, includes the following step: calculating the fragrance application uniformity based on the calculated amount of fragrance liquid and the coverage rate, which includes:

[0040] Calculate the average application area: The average amount of flavor liquid applied and the average coverage of the five atomizers in the array are calculated, expressed by the following formula:

[0041] (6)

[0042] (7)

[0043] in, This indicates the average amount of flavor liquid applied by the array atomizer. This indicates the average coverage of the array atomizer;

[0044] Calculate the uniformity index: Based on the average amount of spice liquid applied and the coverage index, the overall uniformity of spice application in the i-th application area is calculated using the following formula:

[0045] (8)

[0046] in, Represents the i-th region The uniformity exponent at time step, with 0.6 and 0.4 representing variable weights. The higher the value, the better the uniformity.

[0047] The control method for adjustable fragrance physical distribution as described above, preferably, includes correcting the deviation in fragrance application uniformity based on the calculation result of the fragrance application uniformity, comprising:

[0048] Calculate the baseline deviation: The difference between the current uniformity index and the target uniformity is calculated using the following formula:

[0049] (9)

[0050] in, Represents the i-th region The uniformity index at time. This indicates the uniformity of the target setting. Represents the i-th region The difference between the uniformity index at any given time and the set value;

[0051] Based on the baseline deviation, calculate the adjacent interference compensation: Since there is a 2cm overlap in the lateral working areas of adjacent atomizers, the compensated deviation is calculated using the following formula:

[0052] (10)

[0053] in, Indicates the deviation after compensation, interference coefficient In the boundary atomization area ,

[0054] The step of adjusting the power of the array atomizer based on the deviation correction result of the fragrance application uniformity includes:

[0055] Unit atomizer control parameter adjustment: Based on the compensated deviation, the power change is calculated using the following formula:

[0056] (11)

[0057] in, , , ;

[0058] The updated power is calculated using the following formula:

[0059] (12)

[0060] in, This represents the real-time power of the i-th atomizer, in watts (W).

[0061] Unit atomizer power adjustment: Continuously updates the unit atomizer power; when it meets the requirements for 20 consecutive frames... When this happens, power regulation will stop.

[0062] This invention provides an apparatus, control system, and control method for adjustable fragrance distribution. It employs an ultrasonic array atomizer to atomize liquid fragrance into micron-sized aerosol particles through high-frequency vibration, enabling "surface spraying" and significantly improving the uniformity of fragrance distribution. Simultaneously, the atomization amount can be continuously adjusted through parameters such as the power and frequency of the array unit, forming a closed-loop control in conjunction with thin-film images captured by a camera. This precisely matches the movement state of the fragrance liquid with the fragrance application requirements, improving the uniformity and stability of fragrance application. Attached Figure Description

[0063] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings, wherein:

[0064] Figure 1 A schematic diagram of the structure of the device for adjusting the distribution of fragrance substances provided by the present invention;

[0065] Figure 2 An exploded view of the device for adjusting the distribution of fragrance substances provided by the present invention;

[0066] Figure 3 A flowchart illustrating an embodiment of the control method for adjustable fragrance distribution provided by the present invention;

[0067] Figure 4This is a logic diagram of an embodiment of the control method for adjustable fragrance distribution provided by the present invention.

[0068] Explanation of reference numerals in the attached drawings: 1-thin sheet, 2-camera, 3-light source, 4-slide cylinder, 5-extraction device, 6-liquid guide tube, 7-base, 8-spice storage tank, 9-storage tank cover, 10-atomizing chamber, 11-drive wheel assembly, 12-array atomizer, 13-filter screen, 14-atomizing chamber cover. Detailed Implementation

[0069] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. The present disclosure may be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that the present disclosure will be thorough and complete, and will fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless specifically stated otherwise, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0070] The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as “including” or “contains” mean that the element preceding the term encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as “above” and “below” are used only to indicate relative positional relationships; when the absolute position of the described object changes, this relative positional relationship may also change accordingly.

[0071] In this disclosure, when a specific component is described as being located between a first component and a second component, an intermediary component may or may not be present between the specific component and the first or second component. When a specific component is described as connecting to other components, the specific component may be directly connected to the other components without having an intermediary component, or it may not be directly connected to the other components but may have an intermediary component.

[0072] All terms used in this disclosure (including technical or scientific terms) have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0073] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0074] like Figure 1 and Figure 2 As shown, the device for adjustable fragrance distribution provided in this embodiment includes: a base 7, a fragrance storage tank 8 for containing fragrance liquid is provided below the base 7, an atomizing chamber 10 is provided on the base 7, an array atomizer 12 is provided inside the atomizing chamber 10, and transmission wheel assemblies 11 are provided on both sides of the atomizing chamber 10 for conveying the thin sheet 1 into the atomizing chamber 10 for fragrance application, and conveying the thin sheet 1 after fragrance application to the outside of the atomizing chamber 10; an extraction device 5 is provided between the atomizing chamber 10 and the fragrance storage tank 8 for extracting the fragrance from the fragrance storage tank 8 into the atomizing chamber 10; and a camera 2 is provided on one side of the thin sheet outlet end of the atomizing chamber 10 for capturing images of the thin sheet 1 after fragrance application through the atomizing chamber 10.

[0075] The sheet 1 is a strip-shaped tobacco product formed from tobacco raw materials through pulping and drying. The base 7 is used to support the atomizing chamber 10, and the flavoring liquid is loaded through the flavoring storage tank 8. The atomizing chamber 10 is provided with an atomizing pool, and the array atomizer 12 is arranged in the atomizing pool. The flavoring liquid can be atomized through the atomizing chamber 10.

[0076] Furthermore, the array atomizer 12 includes five atomizers arranged side by side, with equal spacing between adjacent atomizers, and each atomizer is an ultrasonic atomizer. Each atomizer can be driven individually or in conjunction with others to atomize the fragrance liquid. It should be noted that the present invention does not specifically limit the number, type, or distribution of the atomizers included in the array atomizer 12. The present invention uses an ultrasonic array atomizer to atomize liquid fragrance into micron-sized aerosol particles through high-frequency vibration, achieving "surface spraying" and significantly improving the uniformity of fragrance physical distribution.

[0077] Furthermore, the inlet and outlet ends of the atomizing chamber 10 are respectively provided with sliding cylinders 4 to facilitate the sliding transport of the thin sheet 1. The transmission wheel assembly 11 includes multiple transmission wheels respectively disposed at the inlet and outlet ends of the atomizing chamber 10. It should be noted that the present invention does not specifically limit the number and distribution of the transmission wheels included in the transmission wheel assembly 11.

[0078] Furthermore, a light source 3 is provided on one side of the camera 2 to generate uniform illumination on the thin sheet 1, which facilitates the camera 2 in collecting data.

[0079] Furthermore, the atomizing chamber 10 is provided with a filter screen 13 and a collection tank from top to bottom. The filter screen 13 is used to filter the residual fragrance liquid after atomization. The collection tank is used to collect the filtered fragrance liquid droplets that were not applied to the thin sheet 1, so as to collect the residual fragrance liquid.

[0080] Furthermore, a liquid guide pipe 6 is provided at the bottom of the atomizing chamber 10, and the lower end of the liquid guide pipe 6 is inserted into the fragrance storage tank 8 for guiding the filtered fragrance liquid collected in the collection pool back to the fragrance storage tank 8.

[0081] Furthermore, the top of the spice storage tank 8 is provided with a storage tank cover 9 for sealing the spice storage tank 8. The storage tank cover 9 has a pipeline that can be connected to the extraction device 5 to transport the spice. The top of the atomizing chamber 10 is provided with an atomizing chamber cover 14 for sealing the atomizing chamber 10.

[0082] During operation, the thin sheet 1 is conveyed by the transmission wheel 11. The thin sheet 1 passes through the atomizing cavity 10, where the fragrance is dispersed by the array atomizer 12. Then, the atomized thin sheet 1 leaves the atomizing cavity 10, and at the rear end, the camera 2 captures an image of the thin sheet 1 after it has been dispersed by the fragrance in the atomizing cavity 10.

[0083] Correspondingly, the present invention also provides a control system for adjustable fragrance distribution, including the above-mentioned device for adjustable fragrance distribution. The control system for adjustable fragrance distribution further includes a controller for controlling the working state of the array atomizer according to the fragrance distribution on the thin film image captured by the camera 2.

[0084] A drive module is provided between the controller and the array atomizer 12 for driving the opening and closing of each atomizer in the array atomizer 12.

[0085] Furthermore, the controller is used to adjust the power of the array atomizer 12 based on the image of the thin film 1 after fragrance application captured by the camera 2 through the atomizing cavity 10.

[0086] Furthermore, the driving module is used to drive the opening and closing of each channel corresponding to each atomizer in the array atomizer 12 according to the control commands issued by the controller. Exemplarily, in one embodiment of the present invention, the driving module is a MOSFET. It should be noted that the present invention does not specifically limit the type and model of the driving module.

[0087] This invention also provides a control method for adjustable fragrance distribution using the above-mentioned control system, such as... Figure 3 and Figure 4As shown, the control method for adjustable fragrance distribution provided in this embodiment includes the following steps in actual execution:

[0088] Step S1: Based on the image captured by the camera, perform dynamic mapping partitioning of the thin-film fogging area.

[0089] In one embodiment of the device, control system, and control method for adjustable fragrance distribution of the present invention, step S1 may specifically include:

[0090] Step S11: Calculate the slice displacement. When acquiring the k-th frame image, calculate the slice movement distance using the following formula:

[0091] (1)

[0092] in, Indicates the distance the thin sheet has moved. This indicates the speed at which the thin sheet is conveyed, measured in cm / s. This represents the acquisition time of the k-th frame, in seconds.

[0093] Step S12, Atomization Zone Mapping: The atomization area formed by the array atomizer acting on the thin film is updated synchronously during the film conveying process, calculated using the following formula. The area of ​​the atomization region corresponding to a single atomizer of the array atomizer within a continuous 20-frame range. :

[0094] [ , (2)

[0095] in, This represents the i-th atomization region. Indicates the overall width of the thin slice. For the partition corresponding to the i-th atomizer in the array atomizer, [ , ]express The film can be continuously transmitted over a distance of 20 frames per second.

[0096] Step S2: Calculate the amount of liquid applied for the spice and the coverage based on the dynamic mapping partition results.

[0097] In one embodiment of the device, control system, and control method for adjustable fragrance distribution of the present invention, step S2 may specifically include:

[0098] Step S21: Calculate the cumulative amount of fragrance liquid in a single frame: In the k-th frame image, calculate the i-th atomization region using the following formula. Cumulative liquid volume inside:

[0099] (3)

[0100] in, This represents the grayscale-to-quality conversion factor, obtained through calibration experiments. Indicates the grayscale of the thin film background. This represents the grayscale value at coordinates (x, y) in the k-th frame of the image.

[0101] Step S22: Calculate the cumulative amount of spice liquid per unit time. Assume the camera's acquisition frequency is 20Hz. The cumulative amount of spice liquid in a single frame approaching frame 20 is summed using the following formula:

[0102] (4)

[0103] in, Represents the i-th atomization region Up to the time of image acquisition of the kth frame The cumulative liquid volume, expressed in mg.

[0104] Step S23: Calculate the fragrance application coverage of a single atomizer in the atomizer array: Calculate the fragrance application coverage of a single atomizer based on the proportion of liquid pixels to the total number of pixels with fragrance application coverage by a single atomizer in the entire image, expressed by the following formula:

[0105] (5)

[0106] in, Indicates the fragrance application coverage of a single atomizer. The grayscale value represents the background color of the thin slice, and T represents the segmentation threshold. Indicates the fragrance application coverage of a single atomizer. This indicates the total number of pixels covered by the fragrance application for a single atomizer. This represents the total number of pixels in the entire image.

[0107] Step S3: Calculate the uniformity of fragrance application based on the calculated amount of liquid applied and the coverage rate.

[0108] In one embodiment of the device, control system, and control method for adjustable fragrance distribution of the present invention, step S3 may specifically include:

[0109] Step S31: Calculate the average application area: Calculate the average amount of flavor liquid applied and the average coverage of the five atomizer influence areas of the array atomizer, expressed by the following formula:

[0110] (6)

[0111] (7)

[0112] in, This indicates the average amount of flavor liquid applied by the array atomizer. This indicates the average coverage of the array atomizer.

[0113] Step S32: Calculate the uniformity index: Based on the average amount of fragrance liquid applied and the coverage index, calculate the overall uniformity of fragrance application in the i-th application area using the following formula:

[0114] (8)

[0115] in, Represents the i-th region The uniformity exponent at time step, with 0.6 and 0.4 representing variable weights. The higher the value, the better the uniformity.

[0116] Step S4: Based on the calculation results of the uniformity of spice application, correct the deviation of the uniformity of spice application.

[0117] In one embodiment of the device, control system, and control method for adjustable fragrance distribution of the present invention, step S4 may specifically include:

[0118] Step S41: Calculate the basic deviation: Calculate the difference between the current uniformity index and the target uniformity using the following formula:

[0119] (9)

[0120] in, Represents the i-th region The uniformity index at time. This indicates the uniformity of the target setting. Represents the i-th region The difference between the uniformity index at any given time and the set value.

[0121] Step S42: Calculate adjacent interference compensation based on the basic deviation: There is a 2cm overlap in the lateral working areas of adjacent atomizers. The deviation after compensation is calculated using the following formula:

[0122] (10)

[0123] in, Indicates the deviation after compensation, interference coefficient In the boundary atomization area ,

[0124] Step S5: Adjust the power of the array atomizer based on the deviation correction result of the fragrance application uniformity.

[0125] In one embodiment of the device, control system, and control method for adjustable fragrance distribution of the present invention, step S5 may specifically include:

[0126] Step S51, Adjustment of unit atomizer control parameters: Based on the compensated deviation, calculate the power change using the following formula:

[0127] (11)

[0128] in, , , .

[0129] Step S52: Calculate the updated power using the following formula:

[0130] (12)

[0131] in, This represents the real-time power of the i-th atomizer, in watts (W).

[0132] Step S53, Unit Atomizer Power Adjustment: Continuously update the unit atomizer power until it meets the requirements for 20 consecutive frames. When this happens, power regulation will stop.

[0133] This invention correlates the amount of fragrance applied with the grayscale of the image, and then calculates the single-frame displacement of the thin film and the amount of fragrance applied per frame. The estimated fragrance application and coverage are obtained by calculation at a specified number of frames. This is extended from a single atomizing cavity to the entire array, thereby obtaining the fragrance application uniformity. Based on this, the power of the array atomizer is adjusted according to the deviation correction result of the fragrance application uniformity.

[0134] The device, control system, and control method for adjustable fragrance distribution provided in this invention employ an ultrasonic array atomizer to atomize liquid fragrance into micron-sized aerosol particles through high-frequency vibration, enabling "surface spraying" and significantly improving the uniformity of the fragrance distribution. Simultaneously, the atomization amount can be continuously adjusted through parameters such as the power and frequency of the array unit, forming a closed-loop control in conjunction with the thin-film image captured by the camera, precisely matching the movement state of the fragrance liquid with the fragrance application requirements, thereby improving the uniformity and stability of fragrance application.

[0135] The embodiments of this disclosure have now been described in detail. To avoid obscuring the concept of this disclosure, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0136] While specific embodiments of this disclosure have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A device for adjusting the distribution of fragrance substances, characterized in that, The base is provided below with a fragrance liquid storage tank for containing fragrance liquid, and is provided above with an atomization cavity, which is provided with an array atomizer, and is provided on both sides with a transmission wheel assembly for conveying a sheet into the atomization cavity for fragrance application and conveying the sheet after fragrance application outside the atomization cavity; an extraction device is arranged between the atomization cavity and the fragrance liquid storage tank for extracting the fragrance in the fragrance liquid storage tank into the atomization cavity; a camera is arranged on one side of the sheet outlet end of the atomization cavity for collecting the image of the sheet after fragrance application through the atomization cavity. The array atomizer comprises five atomizers arranged side by side, and the spacing between adjacent atomizers is equal, and each atomizer is an ultrasonic atomizer; 2. The device for controllable fragrance state distribution according to claim 1, characterized in that, The inlet end and the outlet end of the atomization cavity are respectively provided with a sliding cylinder; A light source is arranged on one side of the camera. A filter screen and a liquid collection pool are arranged in the atomization cavity from top to bottom, wherein the filter screen is used to filter the residual liquid of the atomized fragrance liquid; and the liquid collection pool is used to collect the filtered fragrance liquid drops that are not applied to the sheet; 3. The device for controllable fragrance state distribution according to claim 1, characterized in that, A liquid guide pipe is arranged at the bottom of the atomization cavity, and the lower end of the liquid guide pipe is inserted into the fragrance liquid storage tank for guiding the filtered fragrance liquid collected in the liquid collection pool to flow back into the fragrance liquid storage tank. A storage tank cover is arranged at the top of the fragrance liquid storage tank; and an atomization cavity cover is arranged at the top of the atomization cavity.

4. The device for controllable fragrance state distribution according to claim 1, characterized in that, The control system for controllable fragrance application state distribution further comprises a controller for controlling the working state of the array atomizer according to the fragrance distribution on the sheet image collected by the camera; 5. A controllable fragrance state distribution control system comprising the device of any one of claims 1-4, wherein, A driving module is arranged between the controller and the array atomizer for driving the opening and closing of each atomizer in the array atomizer. The method comprises the following steps:

6. A method for controlling the controllable fragrance state distribution using the control system of claim 5, characterized in that, According to the image captured by the camera, the dynamic mapping partition of the sheet atomization area is carried out; According to the dynamic mapping partition result, the fragrance application liquid amount and the coverage rate are calculated; According to the calculation result of the fragrance application liquid amount and the coverage rate, the fragrance application uniformity is calculated; According to the calculation result of the fragrance application uniformity, the deviation of the fragrance application uniformity is corrected; According to the correction result of the deviation of the fragrance application uniformity, the power of the array atomizer is feedback adjusted. The method according to the camera image comprises the following steps:

7. The method of claim 6, wherein the method further comprises: Calculate the sheet displacement, and calculate the sheet movement distance when collecting the kth image by the following formula: The method according to the dynamic mapping partition result comprises the following steps: （1） wherein, represents the sheet moving distance, represents the sheet conveying speed, in cm / s, represents the acquisition time of the kth frame image, in s; Atomization partition mapping: the atomization area formed by the array atomizer acting on the sheet is updated synchronously with the sheet conveying process, and the atomization area of a single atomizer of the array atomizer in the range of 20 continuous frames at the moment is calculated by the following formula : [ , ] （2） wherein, represents the i-th atomization region, represents the overall width of the sheet, is the i-th atomizer of the array atomizer corresponding to the partition, , represents the sheet conveying distance of the continuous 20 frames at the moment.

8. The method of claim 6, wherein the controllable fragrance state distribution is controlled by a user. Calculate the fragrance application coverage rate of a single atomizer in the atomizer array: calculate the fragrance application coverage rate of a single atomizer according to the proportion of liquid pixels to the total number of single atomizer fragrance application coverage pixels in the whole image, which is represented by the following formula: Calculate the cumulative amount of fragrance liquid of a single frame: in the kth frame image, the cumulative amount of liquid in the ith atomization area is calculated by the following formula: i = i + 1 （3） wherein, represents a gray-mass conversion coefficient, which is obtained by a calibration experiment, represents a gray level of the background of the sheet, represents a gray value of the coordinate (x, y) in the k-th frame image; The amount of perfume liquid accumulated per unit time is calculated, the camera collection frequency is 20HZ, and the following is selected The single-frame perfume liquid cumulative amount of 20 frames is summed up through the following formula: （4） wherein, represents the i-th atomization region cumulative liquid volume, in mg, up to the k-th image acquisition time cumulative liquid volume, in mg, up to the k-th image acquisition time The method according to the calculation result of the fragrance application liquid amount and the coverage rate comprises the following steps: （5） wherein, represents the fragrance application coverage of a single atomizer, represents the thin sheet background color gray scale, T represents the segmentation threshold value, represents the fragrance application coverage of a single atomizer, represents the total number of pixels of the single atomizer fragrance application coverage, represents the total number of pixels of the entire pattern.

9. The method of claim 6, wherein the controllable fragrance state distribution is controlled by a user. ​ Calculate the average area: the average perfume liquid application amount of 5 atomizer influence areas of the array atomizer is calculated, and the average coverage is calculated, which is expressed by the following formula: （6） （7） wherein, represents the average flavorant liquid application amount of the array nebulizer, represents the average coverage of the array nebulizer; Calculate the uniformity index: based on the average perfume liquid application amount and coverage index, the overall application uniformity of the i-th application area is calculated by the following formula: （8） wherein, represents the i-th region the homogeneity index at the time instant, 0.6 and 0.4 represent variable weights, The higher the value, the better the homogeneity.

10. The method of claim 6, wherein the controllable fragrance state distribution is controlled by a user. The deviation of the perfume application uniformity is corrected according to the calculation result of the perfume application uniformity, including: Calculate the basic deviation: the difference between the current uniformity index and the target set uniformity is calculated by the following formula: （9） wherein, represents the i-th region the uniformity index at the time instant, represents the target set uniformity, represents the i-th region the difference between the uniformity index at the time instant and the set value; According to the basic deviation, the adjacent interference compensation is calculated: there is a 2cm overlap in the lateral direction of the adjacent atomizer influence area, and the compensated deviation is calculated by the following formula: （10） wherein represents the compensated deviation, the interference coefficient , the boundary atomized region , The power of the array atomizer is feedback adjusted according to the correction result of the deviation of the perfume application uniformity, including: Unit atomizer control parameter adjustment: the power change amount is calculated according to the compensated deviation by the following formula: （11） wherein , , ; The updated power is calculated by the following formula: （12） wherein, Pti represents the real-time power of the i-th atomizer, in W; Unit atomizer power regulation: Continually update the unit atomizer power when the following conditions are met for 20 consecutive frames Stop power regulation.

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