CN117841531A - Packing carton spouts a yard control system based on machine vision - Google Patents

Abstract

The invention discloses a packaging box code spraying control system based on machine vision, which relates to the technical field of packaging boxes, and the system utilizes imaging equipment so as to rapidly and accurately position and mark a packaging box in a code spraying area, thereby further improving the production efficiency; through the collaborative work of the multi-view image module and the information acquisition module, the system can comprehensively evaluate the influence of the appearance state, the ink composition and the code spraying equipment state of the packaging box on the code spraying, and the code spraying quality is improved by pertinently adjusting and optimizing the code spraying. Aiming at the three-dimensional packaging boxes with different shapes and surface states in the market, the system can know and adapt to various concave-convex forms through the processing of the multi-view image module, and accurately capture the three-dimensional change data of the three-dimensional packaging boxes, so that the code spraying adaptability is stronger, the system can detect the state of the packaging boxes before code spraying by utilizing the related equipment data information acquired by the information acquisition module, and the code spraying defect is further reduced.

Description

Packing carton spouts a yard control system based on machine vision

Technical Field

The invention relates to the technical field of packaging boxes, in particular to a packaging box code spraying control system based on machine vision.

Background

In recent years, with the rapid development of machine vision technology, the application of the machine vision technology in various fields is gradually a key tool for promoting industrial innovation and improving production efficiency; in the aspect of code spraying of packaging boxes, the method belongs to intelligent manufacturing and quality control in the field of automatic production. In modern industry, efficient operation of a production line and stability of product quality are critical to competitiveness of enterprises, and in packaging industry, code spraying technology is an important link for marking and tracing products.

However, in the conventional pack code spraying process, there are a series of problems and disadvantages; for the code spraying of the three-dimensional packaging box, damage phenomena such as bulge and extrusion exist in the packaging box before code spraying in the production process, if the qualified state of the packaging box is detected before code spraying, the later code spraying quality is easily affected, and in addition, the problems of fuzzy spray printing, color difference among spray printing and the like are easily caused by the matching degree of the code spraying equipment state and the ink components to the packaging box. The traditional method is difficult to comprehensively and accurately evaluate the influence of the factors on the code spraying quality, so that a more intelligent and self-adaptive control system is needed to solve the problems, the code spraying quality and the production efficiency are improved, a packaging box code spraying control system based on machine vision is generated, the bottleneck of the traditional code spraying system is solved, and the production level and the identification quality of the packaging industry are improved.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides a packaging box code spraying control system based on machine vision, which solves the problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: a packaging box code spraying control system based on machine vision comprises a position locking module, a multi-view image module, an information acquisition module, a code spraying analysis module and a comprehensive control module;

the position locking module is used for locking the posture of a packaging box to be sprayed with the code under the code spraying instrument by using the imaging equipment so as to acquire a overlook image, establishing a coordinate system, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, and translating and rotating a spray head in the mechanical arm so as to focus the code spraying area of the packaging box to be sprayed with the code;

the multi-view image module is used for capturing the packaging box to be sprayed with the code by utilizing imaging equipment at multiple views, comparing the multi-view image module with the three-dimensional state of the standard packaging box to obtain three-dimensional change data information of a code spraying area in the current packaging box to be sprayed with the code, and setting the spraying distance Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box;

The information acquisition module is used for dividing a code spraying area in the overhead image into a plurality of groups of identification areas by utilizing the overhead image, acquiring and recording related equipment data information and related ink-jet component data information in a code spraying instrument, generating a first data set by combining three-dimensional change data information of the code spraying area in a code spraying packaging box to be sprayed, and detecting the code spraying area after code spraying to acquire related code spraying result data information and generate a second data set;

the code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit, wherein the first analysis unit is used for analyzing and calculating to obtain a code region state factor Mqyz, a pigment component factor Ylyz and a code spraying equipment coefficient Sbyz according to a first data set, and the second analysis unit is used for analyzing and calculating to obtain a code spraying coefficient Pmxs according to a second data set; and the third correlation estimation unit is used for summarizing and analyzing the code region state factor Mqyz, the pigment component factor Ylyz and the code spraying equipment coefficient Sbyz to generate an external environment factor Wjyz, correlating the code spraying coefficient Pmxs with the external environment factor Wjyz to generate a comprehensive abnormality index Yczs, wherein the external environment factor Wjyz is obtained by the following formula:

Wherein a is ₁ 、a ₂ And a ₃ The preset proportional coefficients respectively expressed as a code area state factor Mqyz, a pigment component factor Ylyz and a code spraying device coefficient Sbyz are expressed as a first correction constant;

the comprehensive control module is used for presetting a state threshold value V and an evaluation threshold value K, judging whether a current packaging box to be sprayed with codes has a defect condition or not by comparing a code region state factor Mqyz with the state threshold value V, comparing the evaluation threshold value K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, and adopting a corresponding control scheme according to the evaluation grade.

Preferably, the position locking module comprises a position image capturing unit and a focusing unit;

the position image capturing unit is used for locking the gesture and the position of the packaging box to be sprayed with the code, and shooting a code spraying area of the packaging box to be sprayed with the code by using the imaging equipment so as to acquire a overlook image;

the focusing unit is used for establishing a coordinate system in the top view image, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, namely Bh (x, y), finding the coordinate of the mechanical arm for controlling the nozzle in the coordinate system, comparing the coordinate with the Bh (x, y), and focusing the mechanical arm to the code spraying area of the packaging box to be sprayed with the code in a translation and rotation mode so as to perform code spraying operation.

Preferably, the multi-view image module includes a multi-surface capturing unit and a pitch setting unit;

the multi-surface capturing unit is used for detecting the current three-dimensional state of the packaging box to be sprayed with the code by installing imaging equipment in different directions around the packaging box to be sprayed with the code, and comparing the three-dimensional state of the standard packaging box with the current packaging box with the code by utilizing a convolutional neural network technology so as to acquire three-dimensional change data information of a code spraying area in the packaging box to be sprayed with the code;

the interval setting unit is used for setting the injection interval Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box, and simultaneously obtaining the maximum value of the interval between the nozzles and the code spraying area according to the three-dimensional change data information of the code spraying area in the current packaging box to be sprayed, and recording the maximum value as an injection interval difference Jjc.

Preferably, the first data set includes related equipment data information, related inkjet component data information and three-dimensional change data information of a code spraying area in the packaging box to be code sprayed; the first data set comprises relevant code spraying result data information;

the information acquisition module comprises a first acquisition unit, a second acquisition unit, a third acquisition unit and a fourth acquisition unit;

The first acquisition unit is used for acquiring and recording related equipment data information in the code spraying instrument, wherein the data information comprises nozzle diameter PZzj, spraying distance Psjj, nozzle distance PZjz, spraying printing speed Pysd, spraying printing pressure Pyyz and spraying distance difference Jjc;

the second collecting unit is used for collecting related inkjet component data information of the recording ink pigment, wherein the related inkjet component data information comprises a pH value PZ, a resin content Szhz, a water content Hsz, an oil content Hyz and an ink color visibility Myjd;

the third acquisition unit is used for acquiring and recording three-dimensional change data information of a code spraying area in the code spraying packaging box to be sprayed, wherein the three-dimensional change data information comprises crease length Zhcd, orthographic projection bulge area Gbmj, thickness difference Hdc between adjacent identification areas and orthographic projection concave area Axmj;

the fourth collecting unit is used for collecting and recording the spray printing state of the packaging box after the spray printing of the code so as to obtain relevant spray printing result data information, wherein the spray printing result data information comprises spray printing inclination Qxd, diffusion area Ksmj, ink permeability Std, spray printing integrity Pwzs, ink adhesion Mfd and ink depth difference value Jsdc.

Preferably, the code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit;

The first analysis unit comprises a packaging state subunit, a spray paint subunit and an equipment subunit;

the packaging state subunit is configured to correlate the crease length Zhcd with the orthographic projection bulge area Gbmj by using stereo change data information of a code spraying area in a packaging box to be sprayed and a stereo state of a standard packaging box, and obtain a code area state factor Mqyz after dimensionless processing, where the code area state factor Mqyz is obtained by the following formula:

wherein Axmj is expressed as a forward projection concave area, hdc is expressed as a thickness difference between adjacent recognition areas, and z, g, h and a are respectively expressed as a crease length Zhcd, a forward projection bulge area Gbmj, a thickness difference Hdc between adjacent recognition areas and a preset proportionality coefficient of the forward projection concave area Axmj.

Preferably, the spraying Yan Liaozi unit is configured to obtain, according to the relevant inkjet component data information, a pigment component factor Ylyz by correlating the pH value Pz with the resin content Szhz and performing dimensionless processing, where the pigment component factor Ylyz is obtained by the following formula:

where Hsz is expressed as water content, hyz is expressed as oil content, myjd is expressed as ink color visibility, α, β and χ are all expressed as preset scaling factors, and C is expressed as a second correction constant.

Preferably, the device subunit is configured to obtain, by using relevant code spraying result data information, the code spraying device coefficient Sbyz by associating the nozzle pitch Pzjz with the jet pitch difference Jjc and performing dimensionless processing, where the code spraying device coefficient Sbyz is obtained by the following formula:

wherein Pzzj is expressed as a nozzle diameter, psjj is expressed as a jet pitch, pysd is expressed as a jet printing speed, and Pyyz is expressed as a jet printing pressure, wherein b ₁ 、b ₂ 、b ₃ 、b ₄ 、b ₅ And b ₆ The preset proportionality coefficients respectively expressed as the nozzle diameter Pzzj, the ejection pitch Psjj, the nozzle pitch Pzjz, the ejection speed Pysd, the ejection pressure Pyyz, and the ejection pitch difference Jjc are expressed as the third correction constant.

Preferably, the second analysis unit is configured to correlate the diffusion area Ksmj in the related code spraying result data information with the ink permeability Std according to a second data set, and obtain a code spraying coefficient Pmxs after dimensionless processing, where the code spraying coefficient Pmxs is obtained by the following formula:

where Qxd is denoted as gradient, pwzs is denoted as code-jet integrity, mfd is denoted as ink adhesion, jsdc is denoted as ink depth difference, w ₁ 、w ₂ 、w ₃ 、w ₄ 、w ₅ And w ₆ The preset proportionality coefficients, respectively denoted as gradient Qxd, diffusion area Ksmj, inkjet integrity Pwzs, ink penetration Std, ink adhesion Mfd, and ink depth difference Jsdc, R is denoted as a fourth correction constant.

Preferably, the third correlation estimation unit is configured to combine the first data set and the second data set to obtain a comprehensive abnormality index Yczs, where the comprehensive abnormality index Yczs is obtained by the following formula:

where Wjyz represents an external environmental factor.

Preferably, the integrated control module comprises a first comparison unit and a second comparison unit;

the first comparison unit is used for comparing the code region state factor Mqyz with the state threshold V to judge whether a defect condition exists in a packaging box of a current code to be sprayed;

if the code area state factor Mqyz is more than or equal to the state threshold V, indicating that the defect condition exists in the packaging box of the current code to be sprayed;

if the code area state factor Mqyz is smaller than the state threshold V, indicating that the packing box with the current code to be sprayed has no defect condition;

the second comparison unit is used for comparing the evaluation threshold K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, and adopting a corresponding control scheme according to the evaluation grade, wherein the specific control scheme comprises the following steps:

if the comprehensive abnormality index Yczs is larger than the evaluation threshold K, indicating that the code spraying of the current packaging box is abnormal, stopping transmitting the packaging box after the current code spraying to the next production link, marking the packaging box, checking, maintaining and adjusting all parameters in a code spraying instrument, observing the dry and wet state of ink, and selecting a proper code spraying pigment;

If the comprehensive abnormality index Yczs is less than or equal to the evaluation threshold K, the current packing box is indicated to have no abnormality in code spraying, and no additional scheme is needed at the moment.

(III) beneficial effects

The invention provides a packaging box code spraying control system based on machine vision, which has the following beneficial effects:

(1) The system utilizes imaging equipment so as to rapidly and accurately position the packaging box and mark the code spraying area, thereby further improving the production efficiency; through the collaborative work of the multi-view image module and the information acquisition module, the system can comprehensively evaluate the influence of the appearance state, the ink composition and the code spraying equipment state of the packaging box on the code spraying, and the code spraying quality is improved by pertinently adjusting and optimizing the code spraying. To the three-dimensional packaging box of different shapes and surface conditions in the market, the system can know and adapt to various concave-convex forms through the processing of the multi-view image module, the three-dimensional change data of the three-dimensional packaging box are accurately captured, so that the code spraying adaptability is stronger, the state of the packaging box can be detected before the code spraying by utilizing the related equipment data information acquired by the information acquisition module, deformation phenomena such as bulge and extrusion which possibly exist in the production process of the packaging box are avoided, and the code spraying defect is further reduced. The code spraying analysis module realizes intelligent analysis and adjustment of the code area state, pigment components and code spraying equipment coefficients through cooperative operation of a plurality of analysis units, in a word, the system focuses on code spraying control of the three-dimensional packing box, locks the posture of the packing box to be code sprayed through the imaging equipment, captures the state of the packing box at multiple visual angles, determines whether the packing box which is not code sprayed currently belongs to a qualified product while determining the state of the packing box, and then analyzes the influence of the code spraying equipment state and the ink components on code spraying so as to realize intelligent monitoring and control of the code spraying process in the later period.

(2) By comparing the comprehensive abnormality index Yczs with the evaluation threshold K, the system can be helped to timely detect the abnormality of the packing box in the code spraying process. By setting a proper evaluation threshold K, the quality in the code spraying process can be effectively controlled; when the abnormality is found, the packaging box after the current code spraying is stopped to be transmitted to the next production link, so that the later reworking is avoided, a large amount of resources are wasted on producing low-quality or defective products, the reworking rate is reduced, the dead time of a production line is reduced, and the overall production efficiency is improved.

(3) Through the real-time monitoring of the comprehensive control module, the system can judge and evaluate the state threshold V in the code spraying process, and timely find the defect condition of the packaging box, so that unnecessary code spraying links are avoided, and the product quality is further ensured.

Drawings

Fig. 1 is a schematic diagram of a machine vision-based packing box code spraying control system according to the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

Referring to fig. 1, the invention provides a packaging box code spraying control system based on machine vision, which comprises a position locking module, a multi-view image module, an information acquisition module, a code spraying analysis module and a comprehensive control module;

the position locking module is used for locking the posture of a packaging box to be sprayed with the code under the code spraying instrument by using the imaging equipment so as to acquire a overlook image, establishing a coordinate system, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, and translating and rotating a spray head in the mechanical arm so as to focus the code spraying area of the packaging box to be sprayed with the code;

the multi-view image module is used for capturing the packaging box to be sprayed with the code by utilizing imaging equipment at multiple views, comparing the multi-view image module with the three-dimensional state of the standard packaging box to obtain three-dimensional change data information of a code spraying area in the current packaging box to be sprayed with the code, and setting the spraying distance Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box;

the information acquisition module is used for dividing a code spraying area in the overhead image into a plurality of groups of identification areas by utilizing the overhead image, acquiring and recording related equipment data information and related ink-jet component data information in a code spraying instrument, generating a first data set by combining three-dimensional change data information of the code spraying area in a code spraying packaging box to be sprayed, and detecting the code spraying area after code spraying to acquire related code spraying result data information and generate a second data set;

The code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit, wherein the first analysis unit is used for analyzing and calculating to obtain a code region state factor Mqyz, a pigment component factor Ylyz and a code spraying equipment coefficient Sbyz according to a first data set, and the second analysis unit is used for analyzing and calculating to obtain a code spraying coefficient Pmxs according to a second data set; and the third correlation estimation unit is used for summarizing and analyzing the code region state factor Mqyz, the pigment component factor Ylyz and the code spraying equipment coefficient Sbyz to generate an external environment factor Wjyz, correlating the code spraying coefficient Pmxs with the external environment factor Wjyz to generate a comprehensive abnormality index Yczs, wherein the external environment factor Wjyz is obtained by the following formula:

wherein a is ₁ 、a ₂ And a ₃ Preset proportionality coefficients respectively expressed as code area state factor Mqyz, pigment component factor Ylyz and code spraying equipment coefficient Sbyz, wherein a is more than or equal to 0.12 ₁ ≤0.21，0.15≤a ₂ ≤0.39，0.10≤a ₃ Not more than 0.40, and not less than 0.40 a ₁ +a ₂ +a ₃ Less than or equal to 1.0, wherein A is expressed as a first correction constant;

the comprehensive control module is used for presetting a state threshold value V and an evaluation threshold value K, judging whether a current packaging box to be sprayed with codes has a defect condition or not by comparing a code region state factor Mqyz with the state threshold value V, comparing the evaluation threshold value K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, and adopting a corresponding control scheme according to the evaluation grade.

In the operation of the system, the system can rapidly and accurately position and mark the code spraying area in the process of intelligently spraying codes on the packaging boxes on a high-speed production line through the imaging equipment; through the collaborative work of the multi-view image module and the information acquisition module, the system can comprehensively evaluate the influence of the appearance state, the ink composition and the code spraying equipment state of the packaging box on the code spraying, and the code spraying quality is improved by pertinently adjusting and optimizing the code spraying. To the three-dimensional packaging box of different shapes and surface conditions in the market, the system can know and adapt to various concave-convex forms through the processing of the multi-view image module, the three-dimensional change data of the three-dimensional packaging box are accurately captured, so that the code spraying adaptability is stronger, the state of the packaging box can be detected before the code spraying by utilizing the related equipment data information acquired by the information acquisition module, deformation phenomena such as bulge and extrusion which possibly exist in the production process of the packaging box are avoided, and the code spraying defect is further reduced. The code spraying analysis module realizes intelligent analysis and adjustment of the code area state, pigment components and the code spraying equipment coefficients through the cooperative operation of a plurality of analysis units.

Example 2

Referring to fig. 1, the following details are: the position locking module comprises a position image capturing unit and a focusing unit;

the position image capturing unit is used for locking the gesture and the position of the packaging box to be sprayed with the code, and shooting a code spraying area of the packaging box to be sprayed with the code by using the imaging equipment so as to acquire a overlook image;

the focusing unit is used for establishing a coordinate system in the top view image, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, namely Bh (x, y), finding the coordinate of the mechanical arm for controlling the nozzle in the coordinate system, comparing the coordinate with the Bh (x, y), and focusing the mechanical arm to the code spraying area of the packaging box to be sprayed with the code in a translation and rotation mode so as to perform code spraying operation.

The multi-view image module comprises a multi-face capturing unit and a spacing setting unit;

the multi-surface capturing unit is used for detecting the current three-dimensional state of the packaging box to be sprayed with the code by installing imaging equipment in different directions around the packaging box to be sprayed with the code, and comparing the three-dimensional state of the standard packaging box with the current packaging box with the code by utilizing a convolutional neural network technology so as to acquire three-dimensional change data information of a code spraying area in the packaging box to be sprayed with the code;

The interval setting unit is used for setting the injection interval Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box, and simultaneously obtaining the maximum value of the interval between the nozzles and the code spraying area according to the three-dimensional change data information of the code spraying area in the current packaging box to be sprayed, and recording the maximum value as an injection interval difference Jjc.

In the embodiment, the position locking module can realize the gesture locking, the accurate marking and the focusing of the packaging box to be sprayed with the code through the cooperative work of the position image capturing unit and the focusing unit, so that the nozzle can be accurately positioned and focused to the code spraying area of the packaging box to be sprayed with the code, and the accuracy of code spraying is improved; the multi-face capturing unit in the multi-view image module can detect the three-dimensional state of the packing box to be sprayed in all directions by installing imaging equipment in different directions, the system can compare the three-dimensional state of the standard packing box with the current sprayed code by utilizing the convolutional neural network technology, the three-dimensional change data information of the current sprayed code area is obtained, whether the current packing box is in a qualified state or not is determined in advance, and meanwhile, the recognition capability of the three-dimensional packing box is improved; the space setting unit intelligently sets the spraying space Psjj between the code spraying area and the plurality of groups of nozzles according to the three-dimensional state of the standard packing box, and meanwhile, the space between the nozzles and the code spraying area is dynamically adjusted according to the surface concave-convex condition of the code spraying area of the packing box by acquiring the three-dimensional change data information of the code spraying area in the current packing box to be sprayed, so that the space setting unit adapts to the shapes and states of different packing boxes to the greatest extent, and improves the adaptability and coverage of code spraying; the cooperation of the multi-face capturing unit and the interval setting unit of the multi-view image module is beneficial to ensuring the code spraying consistency under different angles and three-dimensional states, so that the problem that the spray printing is not uniform due to inconsistent intervals between a plurality of groups of nozzles and code spraying areas caused by irregular shapes or state changes of the packaging boxes is solved, and the consistency and the readability of the code spraying are improved. The maximum value of the distance between the nozzle and the code spraying area, namely the jet distance difference Jjc, is obtained, so that the system locks the state of the identification area in the code spraying area, and the state of the identification area in the code spraying area is calibrated into the set distance in real time, which is helpful for ensuring the proper distance between the nozzle and the code spraying area, reducing errors possibly occurring in the code spraying process, and improving the accuracy and stability of code spraying.

Example 3

Referring to fig. 1, the following details are: the first data set comprises related equipment data information, related inkjet component data information and three-dimensional change data information of a code spraying area in a packaging box to be code sprayed; the first data set comprises relevant code spraying result data information;

the information acquisition module comprises a first acquisition unit, a second acquisition unit, a third acquisition unit and a fourth acquisition unit;

the first acquisition unit is used for acquiring and recording related equipment data information in the code spraying instrument, wherein the data information comprises nozzle diameter PZzj, spraying distance Psjj, nozzle distance PZjz, spraying printing speed Pysd, spraying printing pressure Pyyz and spraying distance difference Jjc;

the second collecting unit is used for collecting related inkjet component data information of the recording ink pigment, wherein the related inkjet component data information comprises a pH value PZ, a resin content Szhz, a water content Hsz, an oil content Hyz and an ink color visibility Myjd;

the third acquisition unit is used for acquiring and recording three-dimensional change data information of a code spraying area in the code spraying packaging box to be sprayed, wherein the three-dimensional change data information comprises crease length Zhcd, orthographic projection bulge area Gbmj, thickness difference Hdc between adjacent identification areas and orthographic projection concave area Axmj;

the fourth collecting unit is used for collecting and recording the spray printing state of the packaging box after the spray printing of the code so as to obtain relevant spray printing result data information, wherein the spray printing result data information comprises spray printing inclination Qxd, diffusion area Ksmj, ink permeability Std, spray printing integrity Pwzs, ink adhesion Mfd and ink depth difference value Jsdc.

In the embodiment, the information acquisition module comprehensively acquires equipment data, inkjet component data, three-dimensional change data of a packaging box to be sprayed with the code and the spraying printing state of the packaging box after the code is sprayed through the cooperative work of the first acquisition unit, the second acquisition unit, the third acquisition unit and the fourth acquisition unit, so that the system is ensured to acquire key data in all aspects in the code spraying process, and the quality of the code spraying is comprehensively evaluated; the first acquisition unit records the equipment data information related to the code spraying instrument in detail, is beneficial to the system to know the working state of the code spraying equipment, and provides references for the follow-up code spraying optimization and adjustment. The second acquisition unit acquires and records the data information of the relevant ink jet components of the ink pigment, which is helpful for the system to monitor the components of the ink in real time and ensures the consistency and the visibility of the color in the code jet process. The third acquisition unit acquires three-dimensional change data information of the code spraying area in the packaging box to be code sprayed, so that the system can comprehensively control the state change of the packaging box in the production process, and the packaging box is better suitable for the changes of the shapes and the appearances of different packaging boxes. The fourth acquisition unit acquires the spray printing state of the packaging box after the code spraying, so that the system is helped to monitor the code spraying effect in real time, discover and record the code spraying defect in time, and provide basis for subsequent control and adjustment.

Example 4

Referring to fig. 1, the following details are: the code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit;

the first analysis unit comprises a packaging state subunit, a spray paint subunit and an equipment subunit;

the packaging state subunit is configured to correlate the crease length Zhcd with the orthographic projection bulge area Gbmj by using stereo change data information of a code spraying area in a packaging box to be sprayed and a stereo state of a standard packaging box, and obtain a code area state factor Mqyz after dimensionless processing, where the code area state factor Mqyz is obtained by the following formula:

wherein Axmj is expressed as orthographic projection concave area, hdc is expressed as thickness difference between adjacent identification areas, z, g, h and a are respectively expressed as crease length Zhcd, orthographic projection bulge area Gbmj, thickness difference between adjacent identification areas Hdc and preset proportionality coefficient of orthographic projection concave area Axmj, wherein z is more than or equal to 0.10 and less than or equal to 0.24,0.15 and g is more than or equal to 0.35,0.11 and less than or equal to a is more than or equal to 0.25,0.06 and less than or equal to 0.16, and 0.50 and less than or equal to z+g+h+a is less than or equal to 1.0.

The crease length Zhcd and the orthographic projection bulge area Gbmj can be used for measuring the shape and the bulge condition of the surface of the packaging box through a visual sensor or a laser sensor.

The thickness difference Hdc between adjacent identified areas may be used to measure the thickness between different areas of the package by means of a laser ranging sensor or an ultrasonic sensor.

The orthographic projection depression area Axmj can be used for detecting the depression condition of the surface of the packaging box through a visual sensor or a laser sensor.

The spraying Yan Liaozi unit is configured to obtain a pigment component factor Ylyz by correlating the pH value Pz with the resin content Szhz according to the relevant inkjet component data information, and performing dimensionless processing, where the pigment component factor Ylyz is obtained by the following formula:

wherein Hsz is expressed as water content, hyz is expressed as oil content, myjd is expressed as ink color visibility, α, β and χ are all expressed as preset proportionality coefficients, wherein α.ltoreq. 0.35,0.10.ltoreq.β.ltoreq. 0.26,0.18.ltoreq.χ.ltoreq.0.39, and 0.45.ltoreq.α+β+χ.ltoreq.1.0, and c is expressed as a second correction constant.

The pH value PZ is acquired by using a PH sensor;

the resin content Szhz is used for measuring the resin content in the ink, and can be acquired by adopting an infrared spectrometer, a Nuclear Magnetic Resonance (NMR) or a mass spectrometer and the like;

the water content Hsz is used for measuring the water content in the ink, and can be acquired by a water content sensor or an infrared moisture meter;

The oil content Hyz is used for measuring the oil content in the ink, and can be acquired by a Nuclear Magnetic Resonance (NMR) or an infrared spectrometer;

the ink color visibility Myjd is used for measuring the visibility of the ink color, and can be acquired by using a colorimeter or a spectrophotometer;

the device subunit is configured to obtain, by using relevant code spraying result data information, a code spraying device coefficient Sbyz by associating the nozzle pitch Pzjz with the jet pitch difference Jjc and performing dimensionless processing, where the code spraying device coefficient Sbyz is obtained by the following formula:

wherein Pzzj is expressed as a nozzle diameter, psjj is expressed as a jet pitch, pysd is expressed as a jet printing speed, and Pyyz is expressed as a jet printing pressure, wherein b ₁ 、b ₂ 、b ₃ 、b ₄ 、b ₅ And b ₆ Preset proportionality coefficients respectively expressed as nozzle diameter Pzzj, ejection pitch Psjj, nozzle pitch Pzjz, ejection speed Pysd, ejection pressure Pyyz and ejection pitch difference Jjc, wherein b is 0.06 ∈ ₁ ≤0.15，0.10≤b ₂ ≤0.22，0.05≤b ₃ ≤0.16，0.12≤b ₄ ≤0.25，0.02≤b ₅ ≤0.10，0.03≤b ₆ Not less than 0.12, and not less than 0.45 b ₁ +b ₂ +b ₃ +b ₄ +b ₅ +b ₆ And less than or equal to 1.0, wherein L is expressed as a third correction constant.

The nozzle diameter Pzzj described above typically uses an optical measuring instrument, such as an optical microscope or a laser measuring system, to measure the diameter of the nozzle;

the ejection pitch Psjj can be obtained by measuring the pitch of the ejection of the liquid jet onto the target surface using a photoelectric sensor, a laser range finder, or the like;

The nozzle pitch Pzjz can be obtained by measuring the distance between adjacent nozzles using the same photoelectric sensor or laser range finder;

the jet printing speed Pysd can be obtained by measuring the transmission speed of the jet printing equipment in the printing process or using a speed sensor;

the jet printing pressure Pyz is detected and obtained by using a pressure sensor;

the jet spacing difference Jjc is obtained by carrying out multi-view observation on a plurality of identification areas in the code spraying area, acquiring the spacing between the nozzles at different identification areas and corresponding positions in real time, and acquiring the spacing.

In this embodiment, the packaging state subunit comprehensively considers the three-dimensional change data information of the code spraying area in the packaging box to be code sprayed to obtain the code area state factor Mqyz, and the system can comprehensively evaluate the state of the packaging box, including factors such as crease, concave area and bulge, so as to be helpful for more accurately judging the qualification of the packaging box. The spraying Yan Liaozi unit obtains the pigment component factor Ylyz by correlating the pH value with the resin content Szhz, which helps the system to control the pigment component more accurately and improve the stability and consistency of the sprayed code. The equipment subunit comprehensively analyzes relevant code spraying result data information, and obtains a code spraying equipment coefficient Sbyz through correlating the nozzle spacing PZjz and the jet spacing difference Jjc. The system can better understand the relation between the parameters of the code spraying device and the code spraying effect, and provides a favorable basis for adjusting the parameters of the device. The third correlation estimation unit comprehensively analyzes the packaging state, the pigment components and the equipment parameters to generate an external environment factor Wjyz, which is helpful for the system to comprehensively consider the influence of the external environment on the code spraying and provide more comprehensive basis for the self-adaptive adjustment of the code spraying.

Example 5

Referring to fig. 1, the following details are: the second analysis unit is configured to correlate the diffusion area Ksmj in the related code spraying result data information with the ink permeability Std according to a second data set, and obtain a code spraying coefficient Pmxs after dimensionless processing, where the code spraying coefficient Pmxs is obtained by the following formula:

where Qxd is denoted as gradient, pwzs is denoted as code-jet integrity, mfd is denoted as ink adhesion, jsdc is denoted as ink depth difference, w ₁ 、w ₂ 、w ₃ 、w ₄ 、w ₅ And w ₆ Preset proportionality coefficients respectively expressed as gradient Qxd, diffusion area Ksmj, code-spraying integrity Pwzs, ink permeability Std, ink adhesion Mfd and ink depth difference value Jsdc, wherein w is more than or equal to 0.04 ₁ ≤0.21，0.08≤w ₂ ≤0.20，0.05≤w ₃ ≤0.15，0.04≤w ₄ ≤0.10，0.04≤w ₅ ≤0.25，0.02≤w ₆ Not less than 0.09, and not less than 0.35 w ₁ +w ₂ +w ₃ +w ₄ +w ₅ +w ₆ And less than or equal to 1.0, wherein R is expressed as a fourth correction constant.

The inclination Qxd uses an inclination sensor, a gyroscope or the like to measure the inclination angle of the packing box on the coordinate axis;

the diffusion area Ksmj can be obtained by shooting an image after code spraying through a camera or a camera by using an image processing technology, and then calculating the diffusion area;

code-spraying integrity Pwzs is also evaluated by analyzing character shape and integrity in images using image processing techniques;

The ink permeability Std is used for measuring the permeability of the ink on the substrate through a permeability sensor;

the ink adhesion Mfd is measured by an adhesion sensor to evaluate the adhesion of the ink to the substrate, typically by measuring the adhesion or tackiness of the ink after code spraying;

the ink depth difference Jsdc may be obtained by taking a plurality of measurements of the ink depth and calculating the difference between adjacent ink depths.

In this embodiment, the second analysis unit calculates the code spraying coefficient Pmxs by associating the diffusion area Ksmj and the ink permeability Std in the code spraying result data information, and by comprehensively considering a plurality of factors, provides a beneficial reference for comprehensively evaluating and adjusting the code spraying effect, which is helpful for the system to more comprehensively understand and analyze the influence of different factors on the code spraying effect, and provides more information for accurate control of code spraying. The correction constant and the preset proportionality coefficient are introduced in the calculation process, so that the system can adapt to different conditions more flexibly, the system can consider the weight of each factor more comprehensively and accurately, the robustness and adaptability of the model are improved, and the code spraying coefficient Pmxs can reflect the actual conditions accurately.

Example 6

Referring to fig. 1, the following details are: the third correlation estimation unit is configured to combine the first data set and the second data set to obtain a comprehensive abnormality index Yczs, where the comprehensive abnormality index Yczs is obtained by the following formula:

Where Wjyz represents an external environmental factor.

In this embodiment, the third correlation estimation unit calculates the comprehensive abnormality index Yczs by combining the first data set and the second data set, where the comprehensive abnormality index Yczs comprehensively considers the packaging state, the pigment component, the equipment state, and a plurality of factors related to the code spraying effect, so as to implement comprehensive estimation on the abnormal situation. The comprehensive control module compares the evaluation threshold K with the comprehensive abnormality index Yczs through presetting, which is beneficial to the flexible control of the system in practical application, judges the normal and abnormal states of the code spraying according to specific conditions, and realizes intelligent code spraying control. Through the analysis, the system realizes comprehensive association estimation of a plurality of factors such as external environment, packaging state, pigment components, equipment state and the like, and provides beneficial effects for abnormal conditions in the code spraying process.

Example 7

Referring to fig. 1, the following details are: the comprehensive control module comprises a first comparison unit and a second comparison unit;

the first comparison unit is used for comparing the code region state factor Mqyz with the state threshold V to judge whether a defect condition exists in a packaging box of a current code to be sprayed;

If the code area state factor Mqyz is more than or equal to the state threshold V, indicating that the defect condition exists in the packaging box of the current code to be sprayed;

if the code area state factor Mqyz is smaller than the state threshold V, indicating that the packing box with the current code to be sprayed has no defect condition;

the second comparison unit is used for comparing the evaluation threshold K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, adopting a corresponding control scheme according to the evaluation grade, adjusting the process of setting the evaluation threshold K according to the production environment and the product requirement, dynamically adjusting the evaluation threshold K according to the actual production condition by the system so as to adapt to the code spraying quality requirements under different production conditions, and realizing self-adaptive production control. The specific control scheme comprises the following steps:

if the comprehensive abnormality index Yczs is larger than the evaluation threshold K, the abnormal phenomenon of the code spraying of the current packaging box is shown, and at the moment, the packaging box after the code spraying is stopped from being transmitted to the next production link and marked, so that the abnormal packaging box is effectively prevented from entering the next production link, and the quality and the efficiency of the production line are ensured. Meanwhile, various parameters in the code spraying instrument are checked, maintained and adjusted, so that the problems of code spraying equipment can be found and solved in time, and the stability and reliability of code spraying quality are guaranteed. Observing the dry and wet states of the ink, selecting a proper code spraying pigment, ensuring the optimization of the ink state in the code spraying process, being beneficial to improving the adhesiveness and the spray printing effect of the ink and further improving the code spraying quality;

If the comprehensive abnormality index Yczs is less than or equal to the evaluation threshold K, the current packing box is indicated to have no abnormality in code spraying, and no additional scheme is needed at the moment.

In this embodiment, the first comparing unit compares the code area status factor Mqyz with the status threshold V, so as to determine in real time whether the packaging box of the current code to be sprayed has a defect status, which is helpful for timely finding out an abnormal situation in the code spraying process, and further improves the real-time monitoring and response capability of the production line. The second comparison unit obtains an evaluation grade by comparing the evaluation threshold K with the comprehensive abnormality index Yczs, and adopts a corresponding control scheme according to the evaluation grade, so that the system can be flexibly adjusted according to actual conditions, and the abnormal conditions of different degrees are processed in a refined manner, thereby improving the controllability and the adaptability of the system. Through the control scheme, the system can be used for timely and effectively controlling when abnormal conditions are found, so that the quality and stability of code spraying of the packaging box are guaranteed, and the production efficiency and the accuracy of product identification are improved.

Examples: a packaging box production shop, which introduces a packaging box code spraying control system based on machine vision, is an example of a packaging box production shop:

And (3) data acquisition: crease length Zhcd is 1.2; the orthographic projection bulge area Gbmj is 2.6; the thickness difference Hdc between adjacent identification areas is 0.21; the orthographic projection concave area Axmj is 2.5;

presetting a proportionality coefficient: z is 0.12; g is 0.21; h is 0.10; a is 0.16;

the pH value Pz is 6; the resin content Szhz is 4.5; the water content Hsz was 10.5; the oil content Hyz is 2.6; the ink color visibility Myjd is 67%;

presetting a proportionality coefficient: alpha is 0.22; beta is 0.11; χ is 0.26; the second correction constant C is 0.4;

nozzle diameter Pzzj is 1.2; the injection pitch Psjj is 5; nozzle pitch Pzjz is 1.2; the jet printing speed Pysd is 13.5; the jet printing pressure Pyz is 5.2; the difference Jjc in the ejection distance was 1.3;

presetting a proportionality coefficient: b ₁ 0.10; b ₂ 0.11; b ₃ 0.10; b ₄ 0.13; b ₅ 0.05; b ₆ 0.06; the third correction constant L is 0.19;

the gradient Qxd is 12; the diffusion area Ksmj is 2.3; the code spraying integrity Pwzs is 89%; the ink permeability Std is 68%; ink attachment Mfd was 84%; ink depth difference Jsdc is 28%;

presetting a proportionality coefficient: w (w) ₁ 0.12; w (w) ₂ 0.10; w (w) ₃ 0.08; w (w) ₄ 0.06; w (w) ₅ 0.15; w (w) ₆ 0.04; the fourth correction constant R is 0.33;

presetting a proportionality coefficient: a, a ₁ 0.15; a, a ₂ 0.20; a, a ₃ 0.24; the first correction constant a is 0.59;

from the above data, the following calculations can be made:

code region status factor

If the state threshold V is 1, the code region state factor Mqyz is more than or equal to the state threshold V, and the state factor Mqyz is expressed as that the defect condition exists in the current packaging box to be sprayed with the code;

pigment component factor

Code spraying equipment coefficient

Code spraying coefficient

Comprehensive abnormality index

External environmental factor

If the evaluation threshold K is 0.3, the comprehensive abnormality index Yczs is larger than the evaluation threshold K, and the abnormal phenomenon of the code spraying of the current packaging box is indicated, at the moment, the packaging box after the current code spraying is stopped from being transmitted to the next production link and marked, and meanwhile, all parameters in a code spraying instrument are checked, maintained and adjusted, the dry and wet state of the ink is observed, and the proper code spraying pigment is selected.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. Packaging box spouts a yard control system based on machine vision, its characterized in that: the system comprises a position locking module, a multi-view image module, an information acquisition module, a code spraying analysis module and a comprehensive control module;

The position locking module is used for locking the posture of a packaging box to be sprayed with the code under the code spraying instrument by using the imaging equipment so as to acquire a overlook image, establishing a coordinate system, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, and translating and rotating a spray head in the mechanical arm so as to focus the code spraying area of the packaging box to be sprayed with the code;

the multi-view image module is used for capturing the packaging box to be sprayed with the code by utilizing imaging equipment at multiple views, comparing the multi-view image module with the three-dimensional state of the standard packaging box to obtain three-dimensional change data information of a code spraying area in the current packaging box to be sprayed with the code, and setting the spraying distance Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box;

the information acquisition module is used for dividing a code spraying area in the overhead image into a plurality of groups of identification areas by utilizing the overhead image, acquiring and recording related equipment data information and related ink-jet component data information in a code spraying instrument, generating a first data set by combining three-dimensional change data information of the code spraying area in a code spraying packaging box to be sprayed, and detecting the code spraying area after code spraying to acquire related code spraying result data information and generate a second data set;

The code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit, wherein the first analysis unit is used for analyzing and calculating to obtain a code region state factor Mqyz, a pigment component factor Ylyz and a code spraying equipment coefficient Sbyz according to a first data set, and the second analysis unit is used for analyzing and calculating to obtain a code spraying coefficient Pmxs according to a second data set; and the third correlation estimation unit is used for summarizing and analyzing the code region state factor Mqyz, the pigment component factor Ylyz and the code spraying equipment coefficient Sbyz to generate an external environment factor Wjyz, correlating the code spraying coefficient Pmxs with the external environment factor Wjyz to generate a comprehensive abnormality index Yczs, wherein the external environment factor Wjyz is obtained by the following formula:

wherein a is ₁ 、a ₂ And a ₃ The preset proportional coefficients respectively expressed as a code area state factor Mqyz, a pigment component factor Ylyz and a code spraying device coefficient Sbyz are expressed as a first correction constant;

the comprehensive control module is used for presetting a state threshold value V and an evaluation threshold value K, judging whether a current packaging box to be sprayed with codes has a defect condition or not by comparing a code region state factor Mqyz with the state threshold value V, comparing the evaluation threshold value K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, and adopting a corresponding control scheme according to the evaluation grade.

2. The machine vision-based packaging box code spraying control system according to claim 1, wherein: the position locking module comprises a position image capturing unit and a focusing unit;

the position image capturing unit is used for locking the gesture and the position of the packaging box to be sprayed with the code, and shooting a code spraying area of the packaging box to be sprayed with the code by using the imaging equipment so as to acquire a overlook image;

the focusing unit is used for establishing a coordinate system in the top view image, specifically marking the position of the packaging box to be sprayed with the code according to the coordinate system, namely Bh (x, y), finding the coordinate of the mechanical arm for controlling the nozzle in the coordinate system, comparing the coordinate with the Bh (x, y), and focusing the mechanical arm to the code spraying area of the packaging box to be sprayed with the code in a translation and rotation mode so as to perform code spraying operation.

3. The machine vision-based packing box code spraying control system according to claim 2, wherein: the multi-view image module comprises a multi-face capturing unit and a spacing setting unit;

the multi-surface capturing unit is used for detecting the current three-dimensional state of the packaging box to be sprayed with the code by installing imaging equipment in different directions around the packaging box to be sprayed with the code, and comparing the three-dimensional state of the standard packaging box with the current packaging box with the code by utilizing a convolutional neural network technology so as to acquire three-dimensional change data information of a code spraying area in the packaging box to be sprayed with the code;

The interval setting unit is used for setting the injection interval Psjj between the code spraying area and a plurality of groups of nozzles according to the three-dimensional state of the standard packaging box, and simultaneously obtaining the maximum value of the interval between the nozzles and the code spraying area according to the three-dimensional change data information of the code spraying area in the current packaging box to be sprayed, and recording the maximum value as an injection interval difference Jjc.

4. A machine vision based pack code spray control system as claimed in claim 3, wherein: the first data set comprises related equipment data information, related inkjet component data information and three-dimensional change data information of a code spraying area in a packaging box to be code sprayed; the first data set comprises relevant code spraying result data information;

the information acquisition module comprises a first acquisition unit, a second acquisition unit, a third acquisition unit and a fourth acquisition unit;

the first acquisition unit is used for acquiring and recording related equipment data information in the code spraying instrument, wherein the data information comprises nozzle diameter PZzj, spraying distance Psjj, nozzle distance PZjz, spraying printing speed Pysd, spraying printing pressure Pyyz and spraying distance difference Jjc;

the second collecting unit is used for collecting related inkjet component data information of the recording ink pigment, wherein the related inkjet component data information comprises a pH value PZ, a resin content Szhz, a water content Hsz, an oil content Hyz and an ink color visibility Myjd;

The third acquisition unit is used for acquiring and recording three-dimensional change data information of a code spraying area in the code spraying packaging box to be sprayed, wherein the three-dimensional change data information comprises crease length Zhcd, orthographic projection bulge area Gbmj, thickness difference Hdc between adjacent identification areas and orthographic projection concave area Axmj;

the fourth collecting unit is used for collecting and recording the spray printing state of the packaging box after the spray printing of the code so as to obtain relevant spray printing result data information, wherein the spray printing result data information comprises spray printing inclination Qxd, diffusion area Ksmj, ink permeability Std, spray printing integrity Pwzs, ink adhesion Mfd and ink depth difference value Jsdc.

5. The machine vision-based packaging box code spraying control system according to claim 4, wherein: the code spraying analysis module comprises a first analysis unit, a second analysis unit and a third correlation estimation unit;

the first analysis unit comprises a packaging state subunit, a spray paint subunit and an equipment subunit;

the packaging state subunit is configured to correlate the crease length Zhcd with the orthographic projection bulge area Gbmj by using stereo change data information of a code spraying area in a packaging box to be sprayed and a stereo state of a standard packaging box, and obtain a code area state factor Mqyz after dimensionless processing, where the code area state factor Mqyz is obtained by the following formula:

Wherein Axmj is expressed as a forward projection concave area, hdc is expressed as a thickness difference between adjacent recognition areas, and z, g, h and a are respectively expressed as a crease length Zhcd, a forward projection bulge area Gbmj, a thickness difference Hdc between adjacent recognition areas and a preset proportionality coefficient of the forward projection concave area Axmj.

6. The machine vision-based packaging box code spraying control system according to claim 5, wherein: the spraying Yan Liaozi unit is configured to obtain a pigment component factor Ylyz by correlating the pH value Pz with the resin content Szhz according to the relevant inkjet component data information, and performing dimensionless processing, where the pigment component factor Ylyz is obtained by the following formula:

where Hsz is expressed as water content, hyz is expressed as oil content, myjd is expressed as ink color visibility, α, β and χ are all expressed as preset scaling factors, and C is expressed as a second correction constant.

7. The machine vision-based packaging box code spraying control system according to claim 5, wherein: the device subunit is configured to obtain, by using relevant code spraying result data information, a code spraying device coefficient Sbyz by associating the nozzle pitch Pzjz with the jet pitch difference Jjc and performing dimensionless processing, where the code spraying device coefficient Sbyz is obtained by the following formula:

Wherein PZzj is represented as nozzle diameter, psjj is represented as ejection pitch, and Pysd is represented asFor jet printing speed, pyz is expressed as jet printing pressure, where b ₁ 、b ₂ 、b ₃ 、b ₄ 、b ₅ And b ₆ The preset proportionality coefficients respectively expressed as the nozzle diameter Pzzj, the ejection pitch Psjj, the nozzle pitch Pzjz, the ejection speed Pysd, the ejection pressure Pyyz, and the ejection pitch difference Jjc are expressed as the third correction constant.

8. The machine vision-based packaging box code spraying control system according to claim 5, wherein: the second analysis unit is configured to correlate the diffusion area Ksmj in the related code spraying result data information with the ink permeability Std according to a second data set, and obtain a code spraying coefficient Pmxs after dimensionless processing, where the code spraying coefficient Pmxs is obtained by the following formula:

where Qxd is denoted as gradient, pwzs is denoted as code-jet integrity, mfd is denoted as ink adhesion, jsdc is denoted as ink depth difference, w ₁ 、w ₂ 、w ₃ 、w ₄ 、w ₅ And w ₆ The preset proportionality coefficients, respectively denoted as gradient Qxd, diffusion area Ksmj, inkjet integrity Pwzs, ink penetration Std, ink adhesion Mfd, and ink depth difference Jsdc, R is denoted as a fourth correction constant.

9. The machine vision-based packaging box code spraying control system according to claim 5, wherein: the third correlation estimation unit is configured to combine the first data set and the second data set to obtain a comprehensive abnormality index Yczs, where the comprehensive abnormality index Yczs is obtained by the following formula:

Where Wjyz represents an external environmental factor.

10. The machine vision-based packaging box code spraying control system according to claim 1, wherein: the comprehensive control module comprises a first comparison unit and a second comparison unit;

the first comparison unit is used for comparing the code region state factor Mqyz with the state threshold V to judge whether a defect condition exists in a packaging box of a current code to be sprayed;

if the code area state factor Mqyz is more than or equal to the state threshold V, indicating that the defect condition exists in the packaging box of the current code to be sprayed;

if the code area state factor Mqyz is smaller than the state threshold V, indicating that the packing box with the current code to be sprayed has no defect condition;

the second comparison unit is used for comparing the evaluation threshold K with the comprehensive abnormality index Yczs, obtaining an evaluation grade, and adopting a corresponding control scheme according to the evaluation grade, wherein the specific control scheme comprises the following steps:

if the comprehensive abnormality index Yczs is larger than the evaluation threshold K, indicating that the code spraying of the current packaging box is abnormal, stopping transmitting the packaging box after the current code spraying to the next production link, marking the packaging box, checking, maintaining and adjusting all parameters in a code spraying instrument, observing the dry and wet state of ink, and selecting a proper code spraying pigment;

If the comprehensive abnormality index Yczs is less than or equal to the evaluation threshold K, the current packing box is indicated to have no abnormality in code spraying, and no additional scheme is needed at the moment.