CN117968545A - Thickness measuring method and system for foam cotton with patterns - Google Patents
Thickness measuring method and system for foam cotton with patterns Download PDFInfo
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- CN117968545A CN117968545A CN202410362369.0A CN202410362369A CN117968545A CN 117968545 A CN117968545 A CN 117968545A CN 202410362369 A CN202410362369 A CN 202410362369A CN 117968545 A CN117968545 A CN 117968545A
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- 239000006260 foam Substances 0.000 title claims abstract description 97
- 229920000742 Cotton Polymers 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000005259 measurement Methods 0.000 claims abstract description 105
- 238000005192 partition Methods 0.000 claims abstract description 46
- 238000000691 measurement method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 9
- 238000000638 solvent extraction Methods 0.000 claims description 7
- 238000003860 storage Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The invention relates to the field of thickness measurement, and provides a thickness measurement method and a thickness measurement system for foam cotton with patterns, wherein the method comprises the following steps: determining a thickness measurement data sequence of the foam cotton with the patterns to be detected, and extracting thickness data points in the thickness measurement data sequence; reordering the first preset number of thickness data points, calculating a starting position according to the preset thickness, and determining target data points; extracting a second preset number of thickness data points by taking the target data points as starting points; calculating a thickness average value corresponding to a second preset number of thickness data points, and taking the thickness average value as a thickness value of a target data point to obtain an updated thickness measurement data sequence; determining a partition thickness value corresponding to each partition; and obtaining a thickness measurement result based on the partition thickness value corresponding to each partition. The scheme provided by the invention can reduce the influence of internal bubbles and surface patterns on the thickness measurement result, and improves the accuracy and reliability of the thickness measurement result of the foam cotton with the patterns.
Description
Technical Field
The invention relates to the technical field of thickness measurement, in particular to a thickness measurement method and a thickness measurement system for foam cotton with patterns.
Background
The foam is a material widely applied to the packaging field, and the material of the foam is PEF, EVA, EPDM, polyurethane, polystyrene, polyester, polypropylene and other types. According to different production processes and purposes, the common structure is in a form of middle porous, the surface is flattened or embossed, and the embossed foam is obtained.
In the related art, the foam with the patterns has pores inside, patterns exist on the surface, the traditional X-ray thickness measuring equipment and the point laser scanning thickness measuring equipment are difficult to accurately measure the thickness of the foam with the patterns, and the accuracy and the reliability of the thickness measuring result are low.
Disclosure of Invention
The invention provides a thickness measurement method and a thickness measurement system for foam cotton with patterns, which are used for solving the defect that the traditional X-ray thickness measurement equipment and point laser scanning thickness measurement equipment are difficult to accurately measure the thickness of the foam cotton with patterns.
In one aspect, the invention provides a thickness measurement method of a patterned foam cotton, comprising the following steps:
Determining a thickness measurement data sequence of foam cotton with patterns to be detected, and extracting a first preset number of thickness data points under each contour area in the thickness measurement data sequence;
Reordering the first preset number of thickness data points, calculating a starting position according to the preset thickness, and determining target data points from the reordered first preset number of thickness data points;
Extracting a second preset number of thickness data points from the first preset number of thickness data points after reordering by taking the target data points as starting points; wherein the second preset number is less than the first preset number;
calculating a thickness average value corresponding to the second preset number of thickness data points, and taking the thickness average value as the thickness value of the target data point to obtain an updated thickness measurement data sequence;
Partitioning the updated thickness measurement data sequence, and determining a partition thickness value corresponding to each partition;
and obtaining a thickness measurement result of the foam cotton with the patterns to be measured based on the partition thickness value corresponding to each partition.
According to the thickness measurement method of the foam cotton with the patterns, provided by the invention, the thickness calculation starting position is determined by the following process, and the method comprises the following steps:
receiving a real thickness data sequence and an actual measured thickness data sequence of standard foam cotton with patterns;
Extracting a first preset number of thickness data points under each contour region in the actually measured thickness data sequence;
reordering the first preset number of thickness data points to obtain a reordered data set;
respectively taking each thickness data point in the reordered data set as a starting point according to the data arrangement sequence in the reordered data set, and extracting a second preset number of thickness data points;
Calculating a thickness average value corresponding to a second preset number of thickness data points, and comparing the thickness average value with a real thickness value corresponding to the thickness data point serving as a starting point in the real thickness data sequence to obtain a thickness deviation value;
and taking the position of the thickness data point with the minimum thickness deviation value as a thickness calculation starting position.
According to the thickness measurement method of the foam cotton with the patterns provided by the invention, the thickness measurement data sequence of the foam cotton with the patterns to be measured is determined, and the method comprises the following steps:
Receiving a thickness profile data sequence acquired by a linear array laser sensor group, and determining a thickness compensation value sequence; wherein, the thickness compensation values in the thickness compensation value sequence are in one-to-one correspondence with the thickness profile values in the thickness profile data sequence;
And adding each thickness compensation value in the thickness compensation value sequence to a corresponding thickness profile value in the thickness profile data sequence to obtain a thickness measurement data sequence.
According to the thickness measuring method of the foam cotton with the patterns, the linear array laser sensor group comprises a first linear array laser sensor and a second linear array laser sensor which are arranged oppositely and have gaps, and the first linear array laser sensor and the second linear array laser sensor are respectively arranged on cross beams on two sides of a thickness measuring system;
A movable calibration plate is arranged between the first linear array laser sensor and the second linear array laser sensor, and a fixed calibration plate is arranged at the measurement origin position of the first linear array laser sensor and the second linear array laser sensor;
The determining a sequence of thickness compensation values includes:
Controlling the first linear array laser sensor and the second linear array laser sensor to synchronously move along a measuring path;
Receiving thickness profile data sequences of the movable calibration plates sent by the first linear array laser sensor and the second linear array laser sensor;
obtaining a beam height sequence according to the thickness profile data sequence of the movable calibration plate and known parameter information;
Controlling the first linear array laser sensor and the second linear array laser sensor after the movable calibration plate is removed to move to the original point position and starting operation;
Receiving thickness profile values of fixed calibration plates sent by the first linear array laser sensor and the second linear array laser sensor;
Obtaining an origin height value according to the thickness profile value of the fixed calibration plate and the known parameter information;
and carrying out difference between each beam height value in the beam height sequence and the original point height value to obtain a thickness compensation value sequence.
According to the thickness measurement method of the foam cotton with the flower patterns provided by the invention, based on the partition thickness value corresponding to each partition, the thickness measurement result of the foam cotton with the flower patterns to be measured is obtained, and the method comprises the following steps:
Taking the partition thickness value corresponding to each partition as first coordinate data, and taking the position information of each thickness data point in the foam with patterns to be detected as second coordinate data;
establishing a thickness statistical graph based on the first coordinate data and the second coordinate data;
And taking the thickness statistical graph as a thickness measurement result.
According to the thickness measurement method of the foam cotton with the patterns, after the thickness measurement result of the foam cotton with the patterns to be measured is obtained, the method further comprises the following steps:
Determining the roll gap control quantity of the calender according to the thickness measurement result and a preset regulation and control relation; the preset regulation and control relation is used for representing the corresponding relation between the roll gap control quantity and the thickness measurement result;
And controlling the operation of the calender according to the roll gap control quantity.
On the other hand, the invention also provides a thickness measurement system of the foam cotton with the patterns, which comprises the following steps:
a measuring rack;
the linear array laser sensor group is arranged on the measuring rack;
the control equipment is connected with the linear array laser sensor group, and the control equipment realizes the thickness measurement method of the foam cotton with the patterns when in operation.
According to the thickness measurement system of the patterned foam cotton provided by the invention, the measurement rack comprises: the device comprises a first cross beam, a second cross beam, a first upright post, a second upright post, a first sliding module and a second sliding module;
The first crossbeam with the parallel and relative arrangement of second crossbeam, first stand with the equal vertical arrangement of second stand, the one end of first crossbeam with the one end of second crossbeam all with first stand links to each other, the other end of first crossbeam with the other end of second crossbeam all with the second stand links to each other, first slip module install in on the first crossbeam, the second slip module install in on the second crossbeam, linear array laser sensor group with first slip module with second slip module sliding connection.
According to the thickness measurement system of the foam cotton with the patterns, the linear array laser sensor group comprises a first linear array laser sensor, a second linear array laser sensor, a first servo motor and a second servo motor;
The first linear array laser sensor and the second linear array laser sensor are oppositely arranged and have gaps, the first servo motor is connected with the first linear array laser sensor, the second servo motor is connected with the second linear array laser sensor, and the first servo motor and the second servo motor are connected with the control equipment.
According to the thickness measurement system of the foam cotton with the patterns, the control equipment comprises an industrial controller and electronic equipment, wherein the industrial controller is respectively connected with the linear array laser sensor group and the electronic equipment;
The electronic equipment comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein the processor realizes the thickness measuring method of the foam cotton with the flower patterns when executing the program.
According to the thickness measurement method and system for the foam cotton with the patterns, the thickness measurement data sequence of the foam cotton with the patterns to be measured is determined, and the first preset number of thickness data points under each contour area in the thickness measurement data sequence are extracted; reordering the first preset number of thickness data points, calculating a starting position according to the preset thickness, and determining target data points from the reordered first preset number of thickness data points; extracting a second preset number of thickness data points from the first preset number of thickness data points after reordering by taking the target data points as starting points; calculating a thickness average value corresponding to a second preset number of thickness data points, and taking the thickness average value as a thickness value of a target data point to obtain an updated thickness measurement data sequence; partitioning the updated thickness measurement data sequence, and determining a partition thickness value corresponding to each partition; and obtaining a thickness measurement result of the foam cotton with the patterns to be measured based on the partition thickness value corresponding to each partition. Because the correction and updating are carried out on part of important thickness data points in the thickness measurement data sequence in the thickness measurement process, and the mode of calculating the thickness in a partitioning way is combined, the influence of internal bubbles and surface patterns on the thickness measurement result can be reduced, the problem that the traditional thickness measurement equipment is difficult to accurately measure the thickness of the foam cotton with the patterns is solved, and the accuracy and the reliability of the thickness measurement result of the foam cotton with the patterns are improved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a thickness measurement method of foam cotton with patterns provided by the embodiment of the invention;
FIG. 2 is a graph of thickness statistics plotted against zone thickness values in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a thickness measurement system for embossed foam cotton according to an embodiment of the present invention;
FIG. 4 is a second schematic structural view of a thickness measurement system for textured foam cotton according to an embodiment of the present invention;
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, 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.
The following describes a detailed scheme of the thickness measurement method and system of the embossed foam cotton provided in the embodiment of the present invention with reference to fig. 1 to 5.
Fig. 1 is a flow chart of a thickness measurement method of the foam cotton with flower patterns provided by the embodiment of the invention.
As shown in fig. 1, the method for measuring thickness of foam cotton with flower patterns provided by the embodiment of the invention, the execution main body may be a control device with data receiving and transmitting and data processing functions, and the method mainly includes the following steps:
Step 110: determining a thickness measurement data sequence of the foam cotton with the patterns to be detected, and extracting a first preset number of thickness data points under each contour area in the thickness measurement data sequence.
In this embodiment, the thickness measurement data sequence may be obtained directly from the data collected by the linear array laser sensor group in the thickness measurement system, or may be obtained after performing error correction processing on the basis of the data collected by the linear array laser sensor group.
It will be appreciated that the profile area may be determined based on the shape of the surface pattern of the foam to be tested, for example, if the surface pattern of the foam to be tested is formed by a plurality of diamond-shaped tiles, each diamond-shaped area may be referred to as a profile area.
In practical applications, the first preset number may be determined according to the size of the contour area, or the first preset number may be determined first, and an area formed by the first preset number of thickness data points is taken as a contour area. In this embodiment, the first preset number may take a value of 256.
Step 120: and reordering the first preset number of thickness data points, calculating a starting position according to the preset thickness, and determining target data points from the reordered first preset number of thickness data points.
In this embodiment, the first preset number of thickness data points may be reordered from the large thickness value to the small thickness value, and the starting position may be calculated according to the thickness, and the target data point serving as the starting calculation point after reordering may be determined.
Step 130: extracting a second preset number of thickness data points from the first preset number of thickness data points after reordering by taking the target data points as starting points; wherein the second preset number is smaller than the first preset number.
In some embodiments, the second preset number may be determined according to the first preset number, for example, a value obtained by multiplying the first preset number by a fixed percentage, which may be 5%, may be used as the second preset number. In practical application, if the second preset number calculated in the above manner is not an integer, the corresponding integer value may be obtained by rounding in a rounding manner.
Step 140: and calculating a thickness average value corresponding to the second preset number of thickness data points, and taking the thickness average value as a thickness value of the target data point to obtain an updated thickness measurement data sequence.
It can be understood that the thickness value of the target data point is updated by the calculated thickness average value, so that an updated thickness measurement data sequence can be obtained, and since the thickness calculation starting position is a position which is determined in advance and is closest to the actual thickness value after being corrected by the average value, the accuracy of the thickness value of the target data point can be improved after the target data point is determined according to the thickness calculation starting position and the thickness value of the target thickness point is updated, so that the accuracy of the entire updated thickness measurement data sequence can be improved.
Step 150: partitioning the updated thickness measurement data sequence, and determining a partition thickness value corresponding to each partition.
In this embodiment, the process of partitioning is similar to the process of determining the contour area, and the partitioning can be performed according to the surface pattern shape of the foam cotton with patterns to be detected, or each group of thickness data points with a first preset number can be directly used as a partition, and particularly can be reasonably divided according to actual requirements.
Step 160: and obtaining a thickness measurement result of the foam cotton with the patterns to be measured based on the partition thickness value corresponding to each partition.
According to the scheme provided by the embodiment, the thickness measurement data sequence is updated, and the thickness value is calculated by combining the partition mode, so that the influence of internal bubbles and surface patterns on thickness measurement can be reduced, and the accuracy and reliability of a thickness measurement result are improved.
In one embodiment, the thickness calculation start position is determined by the following process, specifically including:
And firstly, receiving a real thickness data sequence and an actual measured thickness data sequence of the standard foam cotton with the patterns.
It can be understood that the standard foam cotton with patterns is foam cotton with patterns, the thickness of each position of which is known, so that the standard foam cotton with patterns has a real thickness data sequence, and the measured thickness data sequence is thickness data obtained by actual measurement in site.
And secondly, extracting a first preset number of thickness data points under each contour area in the actually measured thickness data sequence. For example, 256 thickness data points may be extracted.
And thirdly, reordering the first preset number of thickness data points to obtain a reordered data set.
In this embodiment, the thickness values may be reordered in order from large to small, and the thickness values in the reordered data set obtained are gradually reduced.
And step four, respectively taking each thickness data point in the reordered data set as a starting point according to the data arrangement sequence in the reordered data set, and extracting a second preset number of thickness data points.
For example, the first set of thickness data points may be first taken as a starting point from which a second predetermined number of thickness data points are extracted. The second number of thickness data points may then be extracted starting from the starting point by taking the second number of thickness data points as starting points and so on until the number of data points following the thickness data points as starting points is equal to the second preset number.
And fifthly, calculating a thickness average value corresponding to the second preset number of thickness data points, and comparing the thickness average value with a real thickness value corresponding to the thickness data point serving as a starting point in a real thickness data sequence to obtain a thickness deviation value.
In this embodiment, by comparing the thickness average value corresponding to the second preset number of thickness data points with the actual thickness value corresponding to the current starting point, a thickness deviation value can be obtained, the thickness deviation value can represent the deviation condition between the thickness average value and the actual thickness value, and the smaller the thickness deviation value is, the closer the thickness average value is to the actual thickness value.
And sixthly, taking the position of the thickness data point with the minimum thickness deviation value as the initial position of thickness calculation.
In this embodiment, the position of the thickness data point with the smallest thickness deviation value is used as the initial position of thickness calculation, and since the thickness data point with the smallest thickness deviation value is the thickness average value calculated by the averaging method that is closest to the actual thickness value of the point, that is, the thickness average value obtained by the averaging method of the point is the most accurate, the position of the point is used as the initial position of thickness calculation.
In practical application, the position coordinates corresponding to the thickness data point with the minimum thickness deviation value and the position in the sequence after reordering can be stored in advance, and in the follow-up practical thickness measuring process, the prestored data can be directly called as known data.
In one embodiment, determining a thickness measurement data sequence of the foam cotton with patterns to be measured specifically includes:
Firstly, receiving a thickness profile data sequence acquired by a linear array laser sensor group, and determining a thickness compensation value sequence; wherein, the thickness compensation value in the thickness compensation value sequence corresponds to the thickness profile value in the thickness profile data sequence one by one.
And then, adding each thickness compensation value in the thickness compensation value sequence and the corresponding thickness profile value in the thickness profile data sequence to obtain a thickness measurement data sequence.
During normal production, the foam with patterns continuously passes through the thickness measuring system, two linear array laser sensors in the linear array laser sensor group synchronously scan back and forth above and below the foam with patterns, thickness profile data of the foam with patterns are collected, the thickness profile data and position data of the two linear array laser sensors are transmitted to the control equipment in real time, and the control equipment adds thickness compensation values at corresponding positions to the measured thickness profile values to generate a thickness measuring data sequence.
In one embodiment, the linear array laser sensor group comprises a first linear array laser sensor and a second linear array laser sensor which are arranged oppositely and have a certain gap, and the first linear array laser sensor and the second linear array laser sensor are respectively arranged on two lateral beams of the thickness measuring system.
A movable calibration plate is arranged between the first linear array laser sensor and the second linear array laser sensor, and a fixed calibration plate is arranged at the measuring origin position of the first linear array laser sensor and the second linear array laser sensor.
It can be understood that the movable calibration plate and the fixed calibration plate can both adopt straight silicon steel sheets, the size is enough to cover the range of laser lines, and the movable calibration plate and the fixed calibration plate are only used in the calibration scene without the foam cotton with patterns to be measured, and the movable calibration plate and the fixed calibration plate need to be dismantled before actual measurement after calibration is finished.
In this embodiment, determining the thickness compensation value sequence specifically includes:
And a first step of controlling the first linear array laser sensor and the second linear array laser sensor to synchronously move along a measuring path.
At this time, install portable demarcation board between first linear array laser sensor and the second linear array laser sensor, can synchronous measurement portable demarcation board's thickness profile value in the removal process.
And step two, receiving thickness profile data sequences of the movable calibration plate sent by the first linear array laser sensor and the second linear array laser sensor.
And thirdly, obtaining a beam height sequence according to the thickness profile data sequence of the movable calibration plate and the known parameter information.
In this embodiment, the known parameter information may include at least fixed numerical information such as a thickness true value of the movable calibration plate, and sizes of the first linear array laser sensor and the second linear array laser sensor.
And fourthly, controlling the first linear array laser sensor and the second linear array laser sensor which are removed from the movable calibration plate to move to the original positions and starting operation.
After the movable calibration plate is removed, when the first linear array laser sensor and the second linear array laser sensor move to the original point position, the fixed calibration plate is positioned in a gap between the first linear array laser sensor and the second linear array laser sensor, so that after the first linear array laser sensor and the second linear array laser sensor start to operate, the thickness profile value of the fixed calibration plate can be measured.
And fifthly, receiving thickness profile values of the fixed calibration plates sent by the first linear array laser sensor and the second linear array laser sensor.
And step six, obtaining an origin height value according to the thickness profile value of the fixed calibration plate and the known parameter information.
In this embodiment, the known parameter information may include at least fixed numerical information such as a thickness true value of the fixed calibration plate, and sizes of the first linear array laser sensor and the second linear array laser sensor.
And seventhly, carrying out difference between each beam height value in the beam height sequence and the original point height value to obtain a thickness compensation value sequence.
The thickness compensation sequence obtained in the embodiment can be used as a deviation correction value to correct the thickness profile value of each measurement position point in the actual measurement process, so that the accuracy and reliability of the thickness measurement result can be further improved.
In an embodiment, based on the partition thickness value corresponding to each partition, a thickness measurement result of the foam cotton with patterns to be measured is obtained, which specifically includes:
The first step, taking the partition thickness value corresponding to each partition as first coordinate data, and taking the position information of each thickness data point in the foam with patterns to be detected as second coordinate data.
And a second step of establishing a thickness statistical graph based on the first coordinate data and the second coordinate data.
And thirdly, taking the thickness statistical graph as a thickness measurement result.
For example, the thickness statistics map may be established by using the thickness value of each partition as ordinate data and the position information of each thickness data point in the foam with patterns to be measured as abscissa data. Fig. 2 illustrates a thickness statistic graph with the abscissa of the thickness statistic graph being the position number of the thickness data points and the ordinate being the zoned thickness values.
In an embodiment, after obtaining the thickness measurement result of the foam with flower to be measured, the method may further include:
Determining the roll gap control quantity of the calender according to the thickness measurement result and a preset regulation and control relation; the preset regulation and control relation is used for representing the corresponding relation between the roll gap control quantity and the thickness measurement result.
And controlling the operation of the calender according to the roll gap control quantity.
In this embodiment, the calender may be controlled according to the thickness measurement result, so as to ensure that the thickness of the embossed foam obtained by calendering meets the preparation requirement.
In some embodiments, after obtaining the thickness measurement result of the foam with flower to be measured, the method may further include:
setting partition thickness thresholds of different partitions, and comparing the partition thickness value of each partition with the corresponding partition thickness threshold to obtain a comparison result.
And if the comparison result shows that at least one partition thickness value is abnormal, sending early warning information to the management terminal.
It will be appreciated that the zone thickness threshold may comprise an upper threshold and a lower threshold, the upper threshold and the lower threshold forming a standard thickness range, if the zone thickness value is within the standard thickness range, the zone thickness value may be determined to be normal, and if the zone thickness value is outside the standard thickness range, the zone thickness value may be determined to be abnormal.
In this embodiment, the management terminal may be a fixed monitoring terminal in a production line monitoring room, or may be a mobile monitoring terminal carried by a manager. The early warning information can comprise key information such as partition identification numbers, partition thickness values, partition thickness threshold values and the like, wherein the partition identification numbers and the partition thickness values are abnormal.
In summary, the thickness measurement method of the foam cotton with flower patterns provided by the embodiment of the invention has at least the following advantages:
Firstly, can realize non-contact measurement, can not cause the measurement deformation of the foaming cotton of taking the decorative pattern.
Secondly, can realize online measurement, the measurement process need not the sample, can not cause the foaming cotton of taking the decorative pattern to be destroyed in the measurement process.
Thirdly, the thickness of the foam cotton with air holes and patterns on the surface can be measured, and the measuring function is more accurate and perfect.
Based on the same general inventive concept, the present invention also protects a thickness measurement system of the patterned foam cotton, and the thickness measurement system of the patterned foam cotton provided by the present invention is described below, and the thickness measurement system of the patterned foam cotton described below and the thickness measurement method of the patterned foam cotton described above can be referred to correspondingly.
Fig. 3 is a schematic structural diagram of a thickness measurement system for embossed foam cotton according to an embodiment of the present invention.
As shown in fig. 3, the thickness measurement system for the foam cotton with the flower pattern provided by the embodiment of the invention specifically includes:
A measurement rack 210;
A linear array laser sensor group 220 mounted on the measuring frame 210;
the control device 230 is connected to the linear array laser sensor group 220, and the control device 230 implements the thickness measurement method of the foam cotton with the flower pattern provided in each embodiment.
In one embodiment, referring to fig. 4, the measuring rack specifically includes: a first cross member 301, a second cross member 302, a first upright 303, a second upright 304, a first sliding module 305, and a second sliding module 306.
The first cross beam 301 and the second cross beam 302 are arranged in parallel and opposite, the first upright 303 and the second upright 304 are vertically arranged, one end of the first cross beam 301 and one end of the second cross beam 302 are connected with the first upright 303, the other end of the first cross beam 301 and the other end of the second cross beam 302 are connected with the second upright 304, the first sliding module 305 is mounted on the first cross beam 301, the second sliding module 306 is mounted on the second cross beam 302, and the linear array laser sensor group is in sliding connection with the first sliding module 305 and the second sliding module 306.
In one embodiment, referring to fig. 4, the linear array laser sensor group includes a first linear array laser sensor 307, a second linear array laser sensor 308, a first servo motor, and a second servo motor.
The first linear array laser sensor 307 and the second linear array laser sensor 308 are oppositely arranged and have a certain gap, the first servo motor is connected with the first linear array laser sensor 307, the second servo motor is connected with the second linear array laser sensor 308, and the first servo motor and the second servo motor are connected with control equipment.
In this embodiment, the first servo motor is used for driving the first linear array laser sensor 307, the second servo motor is used for driving the second linear array laser sensor 308, the first linear array laser sensor 307 is mounted on the first sliding module 305, and the second linear array laser sensor 308 is mounted on the second sliding module 306.
In some embodiments, an encoder can be installed on any roller of the patterned foam cotton production line, and the first linear array laser sensor and the second linear array laser sensor can be triggered to synchronously acquire thickness profile data of the surface of the patterned foam cotton through the encoder.
In practical application, the first sliding module 305 and the second sliding module 306 can be provided with a sliding rail, the first linear array laser sensor 307 and the second linear array laser sensor 308 can be provided with a sliding bar, the sliding bar can be clamped on the sliding rail, and the sliding bar can slide along the sliding rail, so that the first linear array laser sensor 307 and the second linear array laser sensor 308 in the linear array laser sensor group are in sliding connection with the first sliding module 305 and the second sliding module 306.
In one embodiment, the control device comprises an industrial controller and an electronic device, wherein the industrial controller is respectively connected with the linear array laser sensor group and the electronic device.
The electronic equipment comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, and the processor can realize the thickness measuring method of the foam cotton with the flower patterns provided by the embodiments when executing the program.
In this embodiment, the industrial controller may specifically be a PLC (programmable logic controller), where the PLC may control two independent servomotors (i.e., a first servomotor and a second servomotor) to drive a first linear array laser sensor on the first beam and a second linear array laser sensor on the second beam to perform scanning motion, and transmit a scanning result to the electronic device.
Referring to fig. 4, in this embodiment, the control device may be installed in the end cabinet 309, where the end cabinet 309 is disposed on one side of the measurement rack, so as to implement unified storage of related electrical devices and power transmission lines, and facilitate later maintenance.
Referring to fig. 4, in order to accurately acquire the thickness compensation value sequence, a movable calibration plate 310 is installed between the first and second linear array laser sensors 307 and 308, and a fixed calibration plate 311 is installed at the measurement origin positions of the first and second linear array laser sensors 307 and 308.
In practical applications, in order to make the entire measuring rack more firmly placed on the ground, the bottom of the measuring rack is further provided with a plurality of ground feet, and fig. 4 exemplarily shows the first ground feet 312 and the second ground feet 313.
In some embodiments, universal wheels with brake mechanisms may be further mounted on the plurality of ground feet, for example, the first ground feet 312 and the second ground feet 313 in fig. 4 are provided with universal wheels with brake mechanisms, so that flexible mobility of the thickness measurement system of the whole patterned foam cotton can be improved, and adjustment of measurement positions and directions in the measurement process is facilitated.
In some embodiments, a calender control interface may be further disposed on the electronic device, where the calender control interface is connected to a calender controller of the calender, and the electronic device may determine a roll gap control amount of the calender according to the thickness measurement result and a preset regulation relationship, and send the roll gap control amount to the calender controller through the calender control interface, so as to implement a function of controlling an operation process of the calender.
Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
As shown in fig. 5, the electronic device may include: processor 410, communication interface (Communications Interface) 420, memory 430, and communication bus 440, wherein processor 410, communication interface 420, and memory 430 communicate with each other via communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform the thickness measurement method of the textured foam cotton provided by the above embodiments.
Further, the logic instructions in the memory 430 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, where the computer program product includes a computer program, where the computer program can be stored on a non-transitory computer readable storage medium, and when the computer program is executed by a processor, the computer can execute the method for measuring thickness of foamed cotton with patterns provided in the foregoing embodiments.
In yet another aspect, the present invention further provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the thickness measurement method of the embossed foam cotton provided in the above embodiments.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The thickness measuring method of the foam cotton with the patterns is characterized by comprising the following steps of:
Determining a thickness measurement data sequence of foam cotton with patterns to be detected, and extracting a first preset number of thickness data points under each contour area in the thickness measurement data sequence;
Reordering the first preset number of thickness data points, calculating a starting position according to the preset thickness, and determining target data points from the reordered first preset number of thickness data points;
Extracting a second preset number of thickness data points from the first preset number of thickness data points after reordering by taking the target data points as starting points; wherein the second preset number is less than the first preset number;
calculating a thickness average value corresponding to the second preset number of thickness data points, and taking the thickness average value as the thickness value of the target data point to obtain an updated thickness measurement data sequence;
Partitioning the updated thickness measurement data sequence, and determining a partition thickness value corresponding to each partition;
and obtaining a thickness measurement result of the foam cotton with the patterns to be measured based on the partition thickness value corresponding to each partition.
2. The thickness measuring method of the embossed foam cotton according to claim 1, wherein the thickness calculation start position is determined by a process comprising:
receiving a real thickness data sequence and an actual measured thickness data sequence of standard foam cotton with patterns;
Extracting a first preset number of thickness data points under each contour region in the actually measured thickness data sequence;
reordering the first preset number of thickness data points to obtain a reordered data set;
respectively taking each thickness data point in the reordered data set as a starting point according to the data arrangement sequence in the reordered data set, and extracting a second preset number of thickness data points;
Calculating a thickness average value corresponding to a second preset number of thickness data points, and comparing the thickness average value with a real thickness value corresponding to the thickness data point serving as a starting point in the real thickness data sequence to obtain a thickness deviation value;
and taking the position of the thickness data point with the minimum thickness deviation value as a thickness calculation starting position.
3. The method for measuring the thickness of the foam cotton with patterns according to claim 1, wherein the determining the thickness measurement data sequence of the foam cotton with patterns to be measured comprises:
Receiving a thickness profile data sequence acquired by a linear array laser sensor group, and determining a thickness compensation value sequence; wherein, the thickness compensation values in the thickness compensation value sequence are in one-to-one correspondence with the thickness profile values in the thickness profile data sequence;
And adding each thickness compensation value in the thickness compensation value sequence to a corresponding thickness profile value in the thickness profile data sequence to obtain a thickness measurement data sequence.
4. The method for measuring the thickness of the foam cotton with the patterns according to claim 3, wherein the linear array laser sensor group comprises a first linear array laser sensor and a second linear array laser sensor which are arranged oppositely and have gaps, and the first linear array laser sensor and the second linear array laser sensor are respectively arranged on two side cross beams of a thickness measuring system;
A movable calibration plate is arranged between the first linear array laser sensor and the second linear array laser sensor, and a fixed calibration plate is arranged at the measurement origin position of the first linear array laser sensor and the second linear array laser sensor;
The determining a sequence of thickness compensation values includes:
Controlling the first linear array laser sensor and the second linear array laser sensor to synchronously move along a measuring path;
Receiving thickness profile data sequences of the movable calibration plates sent by the first linear array laser sensor and the second linear array laser sensor;
obtaining a beam height sequence according to the thickness profile data sequence of the movable calibration plate and known parameter information;
Controlling the first linear array laser sensor and the second linear array laser sensor after the movable calibration plate is removed to move to the original point position and starting operation;
Receiving thickness profile values of fixed calibration plates sent by the first linear array laser sensor and the second linear array laser sensor;
Obtaining an origin height value according to the thickness profile value of the fixed calibration plate and the known parameter information;
and carrying out difference between each beam height value in the beam height sequence and the original point height value to obtain a thickness compensation value sequence.
5. The method for measuring the thickness of the patterned foam cotton according to claim 1, wherein the obtaining the thickness measurement result of the patterned foam cotton to be measured based on the partition thickness value corresponding to each partition includes:
Taking the partition thickness value corresponding to each partition as first coordinate data, and taking the position information of each thickness data point in the foam with patterns to be detected as second coordinate data;
establishing a thickness statistical graph based on the first coordinate data and the second coordinate data;
And taking the thickness statistical graph as a thickness measurement result.
6. The method for measuring the thickness of the foam cotton with patterns according to claim 1, wherein after obtaining the thickness measurement result of the foam cotton with patterns to be measured, the method further comprises:
Determining the roll gap control quantity of the calender according to the thickness measurement result and a preset regulation and control relation; the preset regulation and control relation is used for representing the corresponding relation between the roll gap control quantity and the thickness measurement result;
And controlling the operation of the calender according to the roll gap control quantity.
7. A thickness measurement system for a textured foam cotton comprising:
a measuring rack;
the linear array laser sensor group is arranged on the measuring rack;
The control device is connected with the linear array laser sensor group, and the control device realizes the thickness measuring method of the foam cotton with the patterns according to any one of claims 1 to 6 when in operation.
8. The textured foam cotton thickness measurement system of claim 7, wherein the measurement frame comprises: the device comprises a first cross beam, a second cross beam, a first upright post, a second upright post, a first sliding module and a second sliding module;
The first crossbeam with the parallel and relative arrangement of second crossbeam, first stand with the equal vertical arrangement of second stand, the one end of first crossbeam with the one end of second crossbeam all with first stand links to each other, the other end of first crossbeam with the other end of second crossbeam all with the second stand links to each other, first slip module install in on the first crossbeam, the second slip module install in on the second crossbeam, linear array laser sensor group with first slip module with second slip module sliding connection.
9. The patterned foam cotton thickness measurement system of claim 7, wherein the linear array laser sensor group comprises a first linear array laser sensor, a second linear array laser sensor, a first servo motor, and a second servo motor;
The first linear array laser sensor and the second linear array laser sensor are oppositely arranged and have gaps, the first servo motor is connected with the first linear array laser sensor, the second servo motor is connected with the second linear array laser sensor, and the first servo motor and the second servo motor are connected with the control equipment.
10. The thickness measurement system of the patterned foam cotton according to claim 7, wherein the control device comprises an industrial controller and an electronic device, and the industrial controller is respectively connected with the linear array laser sensor group and the electronic device;
The electronic device comprises a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements the thickness measurement method of the embossed foam cotton according to any one of claims 1 to 6 when executing the program.
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