A packaging method and equipment for monosodium glutamate production
Through video image recognition and transportation pipe parameter adjustment, the problem of stacking in MSG packaging equipment is solved, the packaging effect and transportation efficiency are improved, and the fitting problems caused by packaging design are overcome.
Patent Information
- Application Number
- CN202411266761.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2044-09-11
Smart Images
Figure CN118770685B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of packaging equipment, and in particular to a packaging method and equipment for monosodium glutamate production. Background Art
[0002] MSG is a condiment widely used to enhance the flavor of food. From raw materials to processing and packaging, it needs to go through multiple processes. Specifically, the production of MSG starts with fermentation, using raw materials such as corn starch or sugar cane to produce glutamic acid through microbial fermentation; then, glutamic acid is converted into sodium glutamate through neutralization reaction to form MSG; then, the solution is filtered, evaporated, concentrated and crystallized to obtain pure sodium glutamate crystals; after centrifugal separation and drying, the crystals are sieved into different particle sizes and packaged in plastic bags or bottles, and then the packaged MSG is coded and boxed. The material of the MSG packaging bag is relatively soft, which makes it easy for MSG to overlap during production and transportation, and it is not easy to code and box. Among them, the overlapping phenomenon is usually caused by unreasonable internal space of the packaging or improper placement of items.
[0003] In order to overcome the phenomenon of overlapping packages, a shaping conveyor is added to the existing packaging equipment for MSG production. The shaping conveyor separates the overlapping MSG by vibrating the transport tube. However, MSG with a relatively soft packaging bag is prone to overlapping packages with a high degree of overlap. At this time, the separation effect of the vibrating transport tube may be limited because the vibration mainly applies force to the items and cannot overcome the high fit caused by the packaging design. The poor separation effect will further lead to low packaging effect and packaging capacity of the packaging equipment. Summary of the invention
[0004] In order to solve the technical problem that the existing shaping conveyor for transporting monosodium glutamate cannot overcome the high-fitting phenomenon caused by the packaging design, resulting in low packaging effect of the packaging equipment using the shaping conveyor, the purpose of the present invention is to provide a packaging method and equipment for monosodium glutamate production, and the technical scheme adopted is as follows:
[0005] One embodiment of the present invention provides a packaging method for monosodium glutamate production, the method comprising:
[0006] During the transportation of packaged MSG, a video frame image at the current moment is collected, and then each MSG area in the video frame image is identified;
[0007] Determine the overlap index of each MSG region according to the centroid position and area of each MSG region; distinguish the target MSG region and the non-target MSG region according to the overlap index;
[0008] Determine the rotation speed of the transport tube corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area; determine the vibration amplitude of the transport tube corresponding to the target MSG area and the non-target MSG area at the next moment according to the overlap index;
[0009] According to the rotation speed and the vibration amplitude, the transport pipes corresponding to the target MSG area and the non-target MSG area at the next moment are controlled.
[0010] Further, the overlapping index of each MSG region is determined according to the centroid position and area of each MSG region, including:
[0011] For any MSG region, determine other MSG regions closest to the MSG region as comparison regions;
[0012] Calculating the centroid distance between the MSG region and the comparison region, and determining a first overlap factor according to the centroid distance, wherein the centroid distance is negatively correlated with the first overlap factor;
[0013] Obtaining a reference area, calculating the difference between the area of the MSG region and the reference area as a second overlapping factor, wherein the difference is positively correlated with the second overlapping factor; wherein the reference area refers to the area size of the packaged MSG without overlapping packaging that is obtained in advance;
[0014] The first overlapping factor and the second overlapping factor are combined to determine the overlapping degree index of the MSG region.
[0015] Further, distinguishing the target MSG area and the non-target MSG area according to the overlap index includes:
[0016] When the overlap index of any MSG region is greater than the overlap threshold, the MSG region is determined to be a target MSG region;
[0017] When the overlap index of any MSG region is not greater than the overlap threshold, the MSG region is determined to be a non-target MSG region.
[0018] Further, after determining the overlap index of each MSG area, when all the MSG areas are non-target MSG areas, the vibration amplitude of each non-target MSG area at the next moment is determined according to the overlap index of each non-target MSG area;
[0019] The vibration amplitude of each non-target MSG area at the next moment is used to control the transport tube corresponding to each non-target MSG area at the next moment.
[0020] Further, determining the vibration amplitude of each non-target MSG area at the next moment according to the overlap index of each non-target MSG area includes:
[0021] Obtain the conversion ratio coefficient of the vibration adjustment of the transport pipe. For any non-target MSG area, multiply the conversion ratio coefficient of the vibration adjustment by the overlap index of the non-target MSG area as the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment.
[0022] Further, according to the overlap index and the centroid position of the target MSG area, the rotation speed of the transport tube corresponding to the target MSG area at the next moment is determined, including:
[0023] Determine the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area; obtain the initial rotation speed of the transport pipe and the conversion ratio coefficient of the speed adjustment;
[0024] The rotation speed of the transport pipe corresponding to the target MSG area at the next moment is determined according to the rotation speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment.
[0025] Further, according to the overlap index and the centroid position of the target MSG area, the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment is determined, including:
[0026] Acquire a reference edge of the video frame image, calculate the distance between the centroid of the target MSG area and the reference edge, and use it as a first speed adjustment factor, wherein the distance is negatively correlated with the first speed adjustment factor;
[0027] Using the overlap index of the target MSG area as a second speed adjustment factor, wherein the overlap index is positively correlated with the second speed adjustment factor;
[0028] The first speed adjustment factor and the second speed adjustment factor are combined to determine the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment.
[0029] Further, determining the rotation speed of the transport pipe corresponding to the target MSG area at the next moment according to the rotation speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment includes:
[0030] Calculating the product of the rotation speed adjustment parameter, the initial rotation speed and the conversion proportional coefficient of the rotation speed adjustment as the rotation speed adjustment value;
[0031] The value obtained by adding the initial rotation speed and the rotation speed adjustment value is used as the rotation speed of the transport tube corresponding to the target MSG area at the next moment.
[0032] Further, identifying each MSG region in the video frame image includes:
[0033] Using the Mask R-CNN target detection and segmentation algorithm, the packaged MSG in the video frame image is identified to obtain a rectangular bounding box of each packaged MSG;
[0034] The area composed of the pixels contained in the rectangular boundary box is used as the MSG area.
[0035] A packaging device for monosodium glutamate production is used to implement the steps of a packaging method for monosodium glutamate production. The packaging device includes a shaping conveyor, and the shaping conveyor includes a transport and stacking control module. The transport and stacking control module includes a monitoring module, a drive output module and an analysis control module. The monitoring module signal is connected to the analysis control module, and the analysis control module signal is connected to the drive output module.
[0036] The present invention has the following beneficial effects:
[0037] The present invention provides a packaging method and equipment for monosodium glutamate production. First, a video frame image at the current moment is collected, and then each monosodium glutamate area in the video frame image is identified, which can realize real-time monitoring of the working condition of a shaping conveyor in the packaging equipment, and subsequently provide a suitable working strategy for the shaping conveyor based on the working condition; secondly, the overlapping degree index of each monosodium glutamate area is determined according to the centroid position and area of each monosodium glutamate area, which can realize judging whether there is a overlapping phenomenon in the packaged monosodium glutamate at the current moment, and distinguish the monosodium glutamate area into a target monosodium glutamate area and a non-target monosodium glutamate area, and subsequently adjust the corresponding transport according to the monosodium glutamate areas with different properties. The relevant parameters of the tube are helpful to reduce the energy consumption of the shaping conveyor; then, the rotation speed and vibration amplitude of the transport tube corresponding to the target MSG area at the next moment and the vibration amplitude of the transport tube corresponding to the non-target MSG area are determined, which helps to adjust the working data of the transport tube in real time, which improves the work efficiency while also improving the energy efficiency of the shaping conveyor; according to the rotation speed and vibration amplitude, the transport tubes corresponding to the target MSG area and non-target MSG area at the next moment are controlled, so that the MSG shaping conveyor can effectively solve the problems of overlapping or uneven packages during the transportation of MSG, further improving the packaging effect and packaging capacity of the packaging equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. 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 paying creative work.
[0039] Figure 1 A structural diagram of a shaping conveyor in a packaging device for monosodium glutamate production provided by the present invention;
[0040] Figure 2 A module diagram of a shaping conveyor in a packaging device for monosodium glutamate production provided by the present invention;
[0041] Figure 3 A flow chart of a packaging method for monosodium glutamate production provided by the present invention;
[0042] Figure 4 Flow chart of the implementation of step S2 in the embodiment of the present invention;
[0043] Figure 5 Flow chart of implementation of step S3 in an embodiment of the present invention;
[0044] The accompanying drawings are described as follows: 1 is a supporting structure, 2 is a driving module, 3 is a conveyor belt, 4 is a transport tube, 5 is a connecting device, 6 is an image collector, 7 is a controller, 8 is a conveyor belt, and 9 is a support. DETAILED DESCRIPTION
[0045] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the technical solutions proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.
[0046] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
[0047] The application scenarios targeted by the present invention may be:
[0048] During the production and transportation of MSG packaging, the material of MSG packaging bags is relatively soft, so it is easy to overlap during transportation and production, and it is difficult to assign codes, which affects the packaging efficiency and packaging effect of the packaging equipment used for MSG production. In order to solve this problem, the shaping conveyor of the packaging equipment is improved. The improved shaping conveyor for packaging MSG can effectively spread out the overlapped MSG and ensure that the MSG particles in the bag are evenly distributed, which effectively overcomes the defects of easy overlap and difficulty in assigning codes in MSG packaging bags.
[0049] Regarding the improved shaping conveyor, in order to overcome the high-fitting phenomenon caused by the material problem of the MSG packaging itself, the present invention provides each transport tube with a driving output module that can real-time adjust the vibration amplitude and rotation speed, and a monitoring module is also provided to collect and analyze the transportation video of the packaged MSG on the shaping conveyor in real time, output relevant data through the analysis control module, and then use the driving output module to convert these relevant data into electrical signals to drive the operation of the transport tube, thereby solving the problem of overlapping packages in the packaged MSG.
[0050] A packaging device for monosodium glutamate production Example 1:
[0051] This embodiment provides a packaging device for monosodium glutamate production, including a shaping conveyor. The structural diagram of the shaping conveyor is shown in FIG. Figure 1 As shown, the support structure 1 can support a total of 4 positions of the shaping conveyor, front, back, left and right; the drive module 2 is located on the side of the transport tube, which includes a motor group, a vibration device and a driver; the conveyor belt 3 is located on the right side of the transport tube 4, and is transported by the transport tube 4 and output from the right conveyor belt 3; the surface of each transport tube 4 is marked with a digital serial number for analyzing the subsequent monitoring process; the connecting device 5 can be used to connect and support the image collector 6; the image collector 6 is used to monitor and feedback the situation of the packaged monosodium glutamate during the shaping and transportation process; the controller 7 is connected to the image collector 6 and the drive module 2, and is used to realize the adjustment and control of the rotation speed and vibration of the transport tube; the conveyor belt 8 is located on the left side of the transport tube 4, and the packaged monosodium glutamate that has not started transportation shaping is transmitted to the transport tube 4 through the conveyor belt 8; the pillar 9 can be used to fix and support the controller 7.
[0052] The shaping conveyor in this embodiment is mainly divided into three modules, such as Figure 2 As shown, the first module is a monitoring module composed of a connecting device 5 and an image collector 6, which is mainly used to monitor the stacking condition of packaged monosodium glutamate on the shaping conveyor; the second module is mainly an analysis and control module composed of a controller 7, which is mainly used to analyze the data monitored by the monitoring module and generate output data for controlling the drive output module; the third module is mainly a drive output module composed of a drive module 2 and a transport tube 4, which is mainly used to rotate or vibrate the transport tube 4 using the drive motor and other systems inside the drive module 2.
[0053] The operation process of the shaping conveyor in this embodiment can be as follows: the packaged MSG is transported to the transport tube 4 by the conveyor belt 8, and the monitoring module transmits a feedback signal to the analysis and control module when the packaged MSG enters the transport tube area; the analysis and control module controls all the transport tubes to rotate at an initial speed to drive the packaged MSG to the right; during the transmission of the packaged MSG, the monitoring module is used to start collecting video frame images at the current moment, and the frequency of the video frame images is 10 frames per second, and the video frame images at the current moment are transmitted to the control and analysis module for analysis and data processing, converted into output results, and then the output results are transmitted to the drive output module; the drive output module converts the input data into electrical signals and controls the operation of the transport tube. During the operation of the transport tube, the monitoring module is used for real-time monitoring, and the above steps are repeated to form a loop control.
[0054] Therefore, the packaging equipment for MSG production provided in this embodiment is essentially realized by an internal data processing process. Since the data processing process has been described in detail in the following second embodiment of a packaging method for MSG production, it will not be repeated here.
[0055] A packaging method for monosodium glutamate production Example 2:
[0056] A flow chart of a packaging method for monosodium glutamate production is shown in FIG. Figure 3 As shown, the method comprises the following steps: S1, collecting a video frame image at the current moment during the transportation of packaged monosodium glutamate, and then identifying each monosodium glutamate area in the video frame image.
[0057] In this embodiment, based on the overlapping phenomenon of packaged MSG in the video frame image at the current moment, the vibration intensity and rotation speed of the transport tube corresponding to the packaged MSG at the next moment of the current moment can be adaptively adjusted to change the working data of the transport tube and overcome the overlapping or uneven phenomenon during packaging. Therefore, it is necessary to first obtain each MSG area at the current moment. Among them, the image acquisition frequency of the video frame can be set to capture 10 frames per second, and the implementer can set the image acquisition frequency according to the specific actual situation; usually, there is a certain degree of difference in the transportation conditions of the packaged MSG in the previous frame and the next frame.
[0058] Specifically, the initial rotation speed of the transport tube is preset, and all the transport tubes of the shaping conveyor are uniformly controlled according to the initial rotation speed; the packaged monosodium glutamate is transported to the transport tube in sequence, and when the packaged monosodium glutamate appears on the transport tube, the image collector is run to collect the video frame image of the current moment of the packaged monosodium glutamate transportation process, and the collected video frame image contains all the packaged monosodium glutamate on the transport tube; then, based on the image features of the packaged monosodium glutamate, each monosodium glutamate area in the video frame image is identified.
[0059] Among them, based on the image features of packaged MSG, each MSG region in the video frame image is identified. The specific implementation steps may include: using the Mask R-CNN (Mask Region-based Convolutional Neural Network) target detection and segmentation algorithm to identify the packaged MSG in the video frame image and obtain the rectangular bounding box of each packaged MSG; the area composed of pixels contained in the rectangular bounding box is used as the MSG area.
[0060] It should be noted that the implementation process of the Mask R-CNN target detection and segmentation algorithm is prior art and is not within the scope of protection of the present invention, and will not be elaborated on in detail here; for two packaged MSGs with overlapping packages, the perimeter of the rectangular bounding box of the covered packaged MSG is smaller than the perimeter of the rectangular bounding box of the uncovered packaged MSG, and the MSG region area of the covered packaged MSG is smaller than the MSG region area of the uncovered packaged MSG.
[0061] So far, this embodiment has obtained various MSG regions in the video frame image at the current moment.
[0062] S2, determining the overlap index of each MSG region according to the centroid position and area of each MSG region; and distinguishing the target MSG region and the non-target MSG region according to the overlap index.
[0063] In order to improve the transportation and shaping process of packaged products and reduce the impact of overlapping packages on product quality and production efficiency, the parameters of the transport tubes corresponding to the packaged MSG are adjusted. Specifically, the parameters of the transport tubes corresponding to the packaged MSG with overlapping packages are adjusted in a targeted manner, including vibration amplitude and rotation speed. Then, first of all, it is necessary to distinguish between the target MSG area and the non-target MSG area. The target MSG area refers to the MSG area where overlapping packages may exist, and the non-target MSG area refers to the MSG area where overlapping packages may not exist.
[0064] The above step S2 can be Figure 4 The steps shown achieve:
[0065] S21, for any MSG region, determine other MSG regions closest to the MSG region as comparison regions.
[0066] In this embodiment, the closer the center distance between two adjacent MSG areas is, the greater the possibility that the two adjacent MSG areas have overlapping phenomena. Therefore, in order to analyze whether there is overlapping phenomenon between the MSG area and its comparison area and the severity of the overlapping phenomenon, it is necessary to first determine the comparison area of each MSG area.
[0067] Specifically, for any MSG region, the center point positions of the MSG region and the MSG regions adjacent to the MSG region are first determined, and then the center point distances between the MSG region and each of the MSG regions adjacent to the MSG region are calculated, and the adjacent MSG region with the smallest center point distance is used as the comparison region of the MSG region. The distance calculation process between two points in an image is a prior art and will not be elaborated in detail.
[0068] Of course, implementers can also use other means to determine the comparison area, for example, using Euclidean distance to calculate the centroid distance between adjacent MSG areas, and using the MSG area with the smallest centroid distance as the comparison area for the corresponding MSG area, without making specific restrictions on the method of determining the comparison area.
[0069] S22, calculating the centroid distance between the MSG region and the comparison region, and determining a first overlap factor according to the centroid distance, wherein the centroid distance is negatively correlated with the first overlap factor.
[0070] Specifically, the centroid distance between the MSG region and the comparison region is calculated first, and then the inverse proportional value of the value obtained by adding the centroid distance to the preset parameter is used as the first overlap factor.
[0071] Among them, the preset parameters are used to avoid the special case where the denominator of the fraction is zero when calculating the inverse proportional value. The preset parameters can take an empirical value of 0.01, and the implementer can set it according to the actual situation without specific limitation; negative correlation means that the dependent variable will decrease as the independent variable increases, and the dependent variable will increase as the independent variable decreases. It can be a subtraction relationship, a division relationship, etc., which is determined by the actual application.
[0072] S23, obtaining a reference area, calculating a difference between the area of the MSG region and the reference area, and using the difference as a second overlapping factor, wherein the difference is positively correlated with the second overlapping factor.
[0073] In this embodiment, the reference area refers to the area size of the packaged MSG without overlapping that is obtained in advance, specifically, the area of the detection image area of a single packaged MSG when the packaged MSG is uniform and without overlap, which is used as the reference area.
[0074] Specifically, the ratio of the reference area to the area of the MSG region is used as the second overlapping factor.
[0075] S24, combining the first overlapping factor and the second overlapping factor to determine an overlapping degree index of the MSG region.
[0076] In this embodiment, the first overlapping factor and the second overlapping factor are determined to quantify the degree of overlap of the MSG area from two aspects, namely, the distance and area difference between the MSG area and its comparison area. The closer the distance, the greater the possibility of overlap, and the greater the area difference, the greater the possibility of overlap.
[0077] As an example, the calculation formula for the overlap index of the ath MSG region may be:
[0078] ; In the formula, represents the overlap index of the a-th MSG region, norm represents the normalization function, S represents the reference area, represents the area of the a-th MSG region, represents the second overlapping factor, represents the centroid distance between the a-th MSG region and the comparison region, c represents the preset parameter, Represents the first overlapping factor.
[0079] In the calculation formula of the overlap index, the norm function is used to make the overlap index range between 0 and 1. The second overlap factor It indicates the ratio of the reference area to the area of the a-th MSG region. The larger the ratio, the smaller the area of the a-th MSG region is relative to the reference area, and the higher the degree of overlap of the a-th MSG region. The first overlap factor It represents the distance between the a-th MSG region and its comparison region. The larger the first overlap factor is, the greater the possibility that the a-th MSG region overlaps with its comparison region. The preset parameter is used to prevent the denominator of the fraction from being zero.
[0080] S25, distinguishing the target MSG area and the non-target MSG area according to the overlap degree index.
[0081] In this embodiment, the overlap index of all MSG areas of packaged MSG in the video frame image at the current moment can be calculated through the calculation formula for determining the overlap index. After obtaining the overlap index of each MSG area, it is necessary to distinguish between the target MSG area and the non-target MSG area.
[0082] Specifically, when the overlap index of any MSG region is greater than the overlap threshold, the MSG region is determined to be a target MSG region; when the overlap index of any MSG region is not greater than the overlap threshold, the MSG region is determined to be a non-target MSG region. The overlap threshold can be set to 0.5, and the implementer can set the overlap threshold according to the actual situation without specific limitation.
[0083] So far, this embodiment obtains the target MSG area and the non-target MSG area in the video frame image at the current moment.
[0084] In addition, it is worth explaining that after determining the overlapping index of each MSG area, there is still a situation where the overlapping index of all MSG areas is not greater than the overlapping threshold, that is, all MSG areas are non-target MSG areas, which means that there may be no overlapping phenomenon on the transport pipe at the current moment, and there is no need to adjust the initial rotation speed of the transport pipe. It is only necessary to determine the vibration amplitude of each non-target MSG area at the next moment according to the overlapping index of each non-target MSG area; and use the vibration amplitude of each non-target MSG area at the next moment to control the transport pipe corresponding to each non-target MSG area at the next moment.
[0085] Determining the vibration amplitude of each non-target MSG area at the next moment according to the overlap index of each non-target MSG area, the specific implementation steps may include:
[0086] Obtain the conversion ratio coefficient of the vibration adjustment of the transport pipe. For any non-target MSG area, multiply the conversion ratio coefficient of the vibration adjustment by the overlap index of the non-target MSG area as the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment. The transport pipe corresponding to the non-target MSG area refers to the transport pipe occupied by the non-target MSG area. The conversion ratio coefficient of the vibration adjustment can be taken as an empirical value of 1.2.
[0087] As an example, the calculation formula for the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment can be:
[0088] ; In the formula, Indicates the vibration amplitude of the transport tube corresponding to the non-target MSG area at the next moment, It represents the conversion ratio coefficient of the vibration adjustment of the transport pipe, and P represents the overlap degree index of the non-target MSG area.
[0089] In the vibration amplitude calculation formula, the greater the overlap index of the non-target MSG area, the greater the vibration amplitude of the transport tube, which is more conducive to making the MSG distribution of the packaged MSG more flat, and facilitating subsequent coding and packing operations; the next moment refers to the next moment of the current moment.
[0090] Of course, the implementer can also use the overlap index as an adjustment coefficient based on the initial vibration amplitude to determine the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment. For example, the product of the overlap index, the conversion ratio coefficient of the vibration adjustment and the initial vibration amplitude is calculated as the vibration adjustment parameter, and then the value after adding the vibration adjustment parameter to the initial vibration amplitude is used as the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment.
[0091] It is worth noting that, because the non-target MSG area may move on the transport tube, the transport tube corresponding to the non-target MSG area at the next moment may be different from the transport tube corresponding to the non-target MSG area at the current moment. This embodiment overcomes the overlapping phenomenon of packaged MSG or the unevenness of MSG inside the package by predicting the relevant parameters of the transport tube corresponding to the packaged MSG at the future moment.
[0092] S3, determining the rotation speed of the transport tube corresponding to the target MSG area at the next moment according to the overlap index and the center of mass position of the target MSG area; determining the vibration amplitude of the transport tube corresponding to the target MSG area and the non-target MSG area at the next moment according to the overlap index.
[0093] It should be noted that the target MSG area exists in the video frame image at the current moment, indicating that there may be overlapping packaged MSG in the transport tube at this time. In order to ensure that the transport tube corresponding to the target MSG area can well separate the packaged MSG that may be overlapped, for the target MSG area, it is necessary to determine the rotation speed of the transport tube corresponding to the target MSG area at the next moment; at the same time, in order to ensure the flatness of the packaged MSG, the vibration amplitude of the transport tube corresponding to the target MSG area and the non-target MSG area at the next moment is determined based on the overlap index. According to the different overlap situations of different MSG areas, the overlapping or unevenness of the packaged MSG is overcome by adaptively adjusting the working data of the transport tube corresponding to the MSG area.
[0094] The above step S3 can be Figure 5 The steps shown achieve:
[0095] S31, determining the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area; obtaining the initial rotation speed of the transport pipe and the conversion ratio coefficient of the speed adjustment.
[0096] In this embodiment, the speed adjustment parameter is used to adjust the initial rotation speed of the transport pipe. When the overlap index of the target MSG area is larger and closer to the transport end conveyor belt, the initial rotation speed of the transport pipe should be adjusted more, that is, the speed adjustment parameter is larger. The conversion ratio coefficient of the initial rotation speed of the transport pipe and the speed adjustment is obtained to facilitate the subsequent determination of the rotation speed of the transport pipe, that is, to provide data support for determining the rotation speed of the transport pipe.
[0097] The above step S31 can be implemented through steps S311 to S314 (not shown in the figure):
[0098] S311, obtaining a reference edge of the video frame image, calculating the distance between the centroid of the target MSG area and the reference edge as a first speed adjustment factor, and the distance is negatively correlated with the first speed adjustment factor.
[0099] Specifically, the transport direction of the packaged MSG is determined, and the edge of the video frame image at the current moment corresponding to the transport direction is used as the reference edge. Assuming that the transport direction is from the left to the right, the right edge of the video frame image at the current moment can be used as the reference edge. The video frame image generally includes an upper edge, a lower edge, a left edge, and a right edge (that is, the length and width of the image); the distance between the centroid of the target MSG area and the reference edge is calculated by using the point-to-straight line distance calculation method, and the inverse proportional value of the distance plus the preset parameter is used as the first speed adjustment factor. The preset parameter can take an empirical value of 0.01.
[0100] It should be noted that the closer the centroid of the target MSG area is to the reference edge, the faster the shaping and transportation speed of the packaged MSG corresponding to the target MSG area is completed, and the more the rotation speed of the transport tube corresponding to the target MSG area at the next moment should be adjusted. The larger the first speed adjustment factor, the distance between the centroid of the target MSG area and the reference edge is negatively correlated with the first speed adjustment factor.
[0101] Of course, the implementer may also use any vertical edge of the MSG conveyor belt 3 adjacent to the transport tube in the video frame image as a reference edge. This embodiment does not specifically limit the method for determining the reference edge.
[0102] S312, taking the overlap index of the target MSG region as the second speed adjustment factor, and the overlap index is positively correlated with the second speed adjustment factor.
[0103] In this embodiment, the greater the overlap index, the more serious the overlapping phenomenon in the target MSG area, and the greater the necessity to adjust the rotation speed of the transport pipe corresponding to the target MSG area. The greater the required rotation speed of the transport pipe corresponding to the target MSG area, the greater the second rotation speed adjustment factor will be.
[0104] S313, combining the first speed adjustment factor and the second speed adjustment factor, determining the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment.
[0105] Specifically, the product of the first speed adjustment factor and the second speed adjustment factor is used as the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment; in another example, the value obtained by adding the first speed adjustment factor and the second speed adjustment factor is used as the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment.
[0106] As an example, the calculation formula for the speed adjustment parameter of the transport pipe corresponding to the rth target MSG area at the next moment may be:
[0107] ;in, represents the speed adjustment parameter of the transport pipe corresponding to the rth target MSG area at the next moment, It represents the overlap index of the r-th target MSG area, that is, the second speed adjustment factor of the r-th target MSG area. represents the distance between the centroid of the rth target MSG region and the reference edge, c represents the preset parameter, Represents the first speed adjustment factor of the rth target MSG area.
[0108] In the calculation formula of the speed adjustment parameter, the second speed adjustment factor The larger the value is, the greater the overlap of the r-th target MSG area is likely to be. Then, the rotation speed of the transport tube corresponding to the r-th target MSG area at the next moment is faster, so that the two packages of MSG that may overlap can be separated by the rotation speed of the transport tube. The smaller the first speed adjustment factor The larger it is, the closer the distance between the r-th target MSG area and the reference edge is. By increasing the rotation speed of the transport tube corresponding to the r-th target MSG area at the next moment, the possible overlapping packages in the r-th target MSG area can be separated as soon as possible to avoid the impact of overlapping packaged MSG on the transportation of subsequent packaged MSG.
[0109] S314, obtaining the initial rotation speed of the transport pipe and the conversion ratio coefficient of the rotation speed adjustment.
[0110] In this embodiment, the conversion ratio coefficient of the speed regulation can be taken as an empirical value of 0.8, and the implementer can set the size of the conversion ratio coefficient according to the actual situation.
[0111] S32, determining the rotation speed of the transport pipe corresponding to the target MSG area at the next moment according to the rotation speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment.
[0112] The above step S32 can be implemented through steps S321 to S322 (not shown in the figure):
[0113] S321, calculating the product of the rotation speed adjustment parameter, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment as the rotation speed adjustment value.
[0114] S322, taking the value obtained by adding the initial rotation speed and the rotation speed adjustment value as the rotation speed of the transport tube corresponding to the target MSG area at the next moment.
[0115] As an example, the calculation formula for the rotation speed of the transport tube corresponding to the rth target MSG area at the next moment may be:
[0116] ; In the formula, represents the rotation speed of the transport tube corresponding to the rth target MSG area at the next moment, represents the initial rotation speed, Indicates the conversion ratio coefficient of speed regulation, It represents the speed adjustment parameter of the transport pipe corresponding to the rth target MSG area at the next moment.
[0117] In the calculation formula of the rotation speed, the rotation speeds of multiple transport tubes corresponding to the r-th target MSG area at the next moment remain consistent; the larger the speed adjustment parameter, the greater the increase in the initial rotation speed, and the greater the rotation speed of the transport tube corresponding to the r-th target MSG area at the next moment; through the above-mentioned calculation formula of the rotation speed, the initial rotation speed of the transport tubes corresponding to different target MSG areas at the next moment can be adjusted to determine the rotation speed of the transport tube corresponding to each target MSG area at the next moment.
[0118] S33, determining the vibration amplitude of the transport pipe corresponding to the target MSG area and the non-target MSG area at the next moment according to the overlap degree index.
[0119] In this embodiment, during the transportation process, the vibration amplitude of the transport tube is adjusted. By determining the vibration amplitude, two packages of MSG that are overlapped can be separated. At the same time, the distribution of MSG inside the packaged MSG can also be smoother, which is helpful to separate and evenly distribute the packaged MSG. Therefore, it is necessary to determine the vibration amplitude of the transport tube corresponding to the target MSG area and non-target MSG area at the next moment.
[0120] Specifically, based on the overlap index of each target MSG region and each non-target MSG region, the vibration amplitude of the transport pipe corresponding to each target MSG region and each non-target MSG region at the next moment is determined with reference to the calculation process of the vibration amplitude of the transport pipe corresponding to the non-target MSG region at the next moment in step S25. Therefore, each MSG region in the video frame image at the current moment has its corresponding adjustment parameter at the transport pipe corresponding to the next moment.
[0121] Thus, this embodiment determines the rotation speed and vibration amplitude of the transport tube corresponding to each target MSG area in the video frame image at the current moment at the next moment, and the vibration amplitude of the transport tube corresponding to each non-target MSG area at the next moment.
[0122] S4, controlling the transport tube corresponding to the target MSG area at the next moment according to the rotation speed and vibration amplitude.
[0123] After obtaining the rotation speed and vibration amplitude of the transport tube corresponding to each target MSG area at the next moment, and the vibration amplitude of the transport tube corresponding to each non-target MSG area at the next moment in the video frame image at the current moment, this embodiment sends the relevant control parameters to the drive output module of the shaping conveyor to facilitate control of the transport tube corresponding to the target MSG area at the next moment and the transport tube corresponding to the non-target MSG area.
[0124] Thus, the present invention realizes the improvement of the shaping and transporting equipment in the packaging equipment used for the production of monosodium glutamate, which is helpful to overcome the high-fitting phenomenon caused by the packaging design, and effectively solves the overlapping phenomenon while maintaining the overall transportation process, thereby improving the packaging effect and packaging capacity of the packaging equipment.
[0125] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.
Claims
1. A packaging method for monosodium glutamate production, characterized in that: The method comprises: During the transportation of packaged MSG, a video frame image at the current moment is collected, and then each MSG area in the video frame image is identified; Determine the overlap index of each MSG region according to the centroid position and area of each MSG region; distinguish the target MSG region and the non-target MSG region according to the overlap index; Determine the rotation speed of the transport tube corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area; determine the vibration amplitude of the transport tube corresponding to the target MSG area and the non-target MSG area at the next moment according to the overlap index; According to the rotation speed and the vibration amplitude, the transport pipes corresponding to the target MSG area and the non-target MSG area at the next moment are controlled.
2. A packaging method for monosodium glutamate production according to claim 1, characterized in that: Determining the overlap index of each MSG region according to the centroid position and area of each MSG region includes: For any MSG region, determine other MSG regions closest to the MSG region as comparison regions; Calculating the centroid distance between the MSG region and the comparison region, and determining a first overlap factor according to the centroid distance, wherein the centroid distance is negatively correlated with the first overlap factor; Obtaining a reference area, calculating the difference between the area of the MSG region and the reference area as a second overlapping factor, wherein the difference is positively correlated with the second overlapping factor; wherein the reference area refers to the area size of the packaged MSG without overlapping packaging that is obtained in advance; The first overlapping factor and the second overlapping factor are combined to determine the overlapping degree index of the MSG region.
3. A packaging method for monosodium glutamate production according to claim 1, characterized in that: Distinguishing the target MSG area and the non-target MSG area according to the overlap index includes: When the overlap index of any MSG region is greater than the overlap threshold, the MSG region is determined to be a target MSG region; When the overlap index of any MSG region is not greater than the overlap threshold, the MSG region is determined to be a non-target MSG region.
4. A packaging method for monosodium glutamate production according to claim 1, characterized in that: After determining the overlap index of each MSG area, when all the MSG areas are non-target MSG areas, determining the vibration amplitude of each non-target MSG area at the next moment according to the overlap index of each non-target MSG area; The vibration amplitude of each non-target MSG area at the next moment is used to control the transport tube corresponding to each non-target MSG area at the next moment.
5. A packaging method for monosodium glutamate production according to claim 4, characterized in that: Determining the vibration amplitude of each non-target MSG area at the next moment according to the overlap index of each non-target MSG area includes: Obtain the conversion ratio coefficient of the vibration adjustment of the transport pipe. For any non-target MSG area, multiply the conversion ratio coefficient of the vibration adjustment by the overlap index of the non-target MSG area as the vibration amplitude of the transport pipe corresponding to the non-target MSG area at the next moment.
6. A packaging method for monosodium glutamate production according to claim 1, characterized in that: Determining the rotation speed of the transport tube corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area includes: Determine the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area; obtain the initial rotation speed of the transport pipe and the conversion ratio coefficient of the speed adjustment; The rotation speed of the transport pipe corresponding to the target MSG area at the next moment is determined according to the rotation speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment.
7. A packaging method for monosodium glutamate production according to claim 6, characterized in that: Determining the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment according to the overlap index and the centroid position of the target MSG area includes: Acquire a reference edge of the video frame image, calculate the distance between the centroid of the target MSG area and the reference edge, and use it as a first speed adjustment factor, wherein the distance is negatively correlated with the first speed adjustment factor; Using the overlap index of the target MSG area as a second speed adjustment factor, wherein the overlap index is positively correlated with the second speed adjustment factor; The first speed adjustment factor and the second speed adjustment factor are combined to determine the speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment.
8. A packaging method for monosodium glutamate production according to claim 6, characterized in that: Determining the rotation speed of the transport pipe corresponding to the target MSG area at the next moment according to the rotation speed adjustment parameter of the transport pipe corresponding to the target MSG area at the next moment, the initial rotation speed and the conversion ratio coefficient of the rotation speed adjustment includes: Calculating the product of the rotation speed adjustment parameter, the initial rotation speed and the conversion proportional coefficient of the rotation speed adjustment as the rotation speed adjustment value; The value obtained by adding the initial rotation speed and the rotation speed adjustment value is used as the rotation speed of the transport tube corresponding to the target MSG area at the next moment.
9. A packaging method for monosodium glutamate production according to claim 1, characterized in that: Identifying each MSG region in the video frame image includes: Using the Mask R-CNN target detection and segmentation algorithm, the packaged MSG in the video frame image is identified to obtain a rectangular bounding box of each packaged MSG; The area composed of the pixels contained in the rectangular boundary box is used as the MSG area.
10. A packaging device for monosodium glutamate production, used to implement the steps of a packaging method for monosodium glutamate production as claimed in any one of claims 1 to 9, the packaging device comprising a shaping conveyor, characterized in that: The shaping conveyor includes a transport and stacking control module, which includes a monitoring module, a drive output module and an analysis control module. The monitoring module signal is connected to the analysis control module, and the analysis control module signal is connected to the drive output module.