CN112461137A - Small dragon door corrugated paper length measuring system and measuring method thereof - Google Patents
Small dragon door corrugated paper length measuring system and measuring method thereof Download PDFInfo
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- CN112461137A CN112461137A CN202011274266.7A CN202011274266A CN112461137A CN 112461137 A CN112461137 A CN 112461137A CN 202011274266 A CN202011274266 A CN 202011274266A CN 112461137 A CN112461137 A CN 112461137A
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- 238000000034 method Methods 0.000 title claims description 23
- 239000000123 paper Substances 0.000 claims abstract description 51
- 230000006698 induction Effects 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000011087 paperboard Substances 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The invention relates to the field of corrugated paper processing, in particular to a length measuring and measuring system for small gantry corrugated paper, which comprises a conveying mechanism, a gantry stacking frame, an end part induction sensor, a transmission speed sensor, a shooting mechanism, a processing chip and a display, wherein the conveying mechanism is arranged on the gantry stacking frame; the shooting mechanism is arranged on the side surface of the conveying mechanism and is aligned with the end induction sensor; the end part induction sensor, the transmission speed sensor and the shooting mechanism are connected to the input end of the processing chip, and the display is connected to the output end of the processing chip. The invention measures the length of the paper board on the corrugated paper gantry stacker by an image processing mode, and simultaneously can measure the wavy corrugated medium paper.
Description
Technical Field
The invention relates to the field of corrugated paper processing, in particular to a small dragon door corrugated paper length measuring system and a measuring method thereof.
Background
The stacking machine is an important device in a corrugated board production line, and after the corrugated boards are longitudinally and transversely cut, the stacking machine completes the stacking, conveying and stacking of the corrugated boards. During the stacking process, the length of the corrugated paper needs to be measured, and the conventional measurement is usually performed by a roller, and after the measurement, an impression is left on the paper board. Further, the corrugated medium paper having a wavy shape cannot be measured for its length.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides a small-gantry corrugated paper length measuring system and a measuring method thereof.
The technical purpose of the invention is realized by the following technical scheme:
a length measuring and measuring system for corrugated paper of a small gantry comprises a conveying mechanism, a gantry stacking frame, an end part induction sensor, a transmission speed sensor, a shooting mechanism, a processing chip and a display; the shooting mechanism is arranged on the side surface of the conveying mechanism and is aligned with the end induction sensor; the end part induction sensor, the transmission speed sensor and the shooting mechanism are connected to the input end of the processing chip, and the display is connected to the output end of the processing chip.
Preferably, the shooting mechanism is provided with a constant illumination mechanism.
Preferably, the end part induction sensor is fixed on the photoelectric sensor at the gantry stacking frame, and when the paper board to be detected passes through the gantry stacking frame from the transportation mechanism, the sensor detects large distance change and sends a signal.
A length measuring method for corrugated paper of a small gantry comprises the following steps:
s1, measuring the speed of the corrugated paper to be measured: the corrugated paper is placed on a conveying mechanism, and after the speed of the corrugated paper is stable, the conveying speed V of the conveying mechanism is measured through a conveying speed sensor;
s2, taking a picture: when the corrugated paper to be detected passes through the gantry stacking rack, the signal of the end induction sensor changes, the shooting mechanism is started to shoot the side face of the corrugated paper at continuous intervals, the width of a picture is L, the ratio of the picture to an actual scene is p, the shooting interval time t is calculated according to the speed of the corrugated paper, when the corrugated paper to be detected completely passes through the gantry stacking rack, the signal of the end induction sensor changes again, and the shot picture is transmitted to the processing chip;
s3, image processing: splicing photos; pixelizing the picture into a dot matrix of nxm, and then setting a threshold value to process the picture into black and white; assigning the color of the pixel points, and separating out corrugated wave coordinates;
s4, length calculation: calculating the number of corrugated waves according to pixel point color data; calculating the total length of the corrugated paper to be measured by combining the lengths of the single corrugated waves;
s5, output display: the processing chip transmits the calculated length data to the display for display.
5. The method as claimed in claim 4, wherein the photographing interval t is L/Vp in step S2.
Preferably, the photo stitching manner in step S3 is to stitch all the taken photos together transversely in the order of the taking time to form a finished image.
Preferably, in step S3, each pixel point is assigned as (a, b, c), where a is a horizontal coordinate of the pixel, b is a vertical coordinate of the pixel, 0 < i ≦ n, 0 < i ≦ m, c ≦ 1 or 0, 1 indicates black, and 0 indicates white; finding the highest point and the lowest point of the pixel points with black color to obtain the wave pattern central line y which is (bmax + bmin)/2.
Preferably, the method for calculating the number of corrugated waves in step S4 includes: setting variable K, reading (a) in sequencei，bmax+bmin)/2，ci) I is more than 0 and less than or equal to n, ifi-1-ciAnd (5) 1 is added to the K, and the number M of the final corrugated waves is K/2.
Preferably, the total length L of the corrugated paper to be tested is M × a, and a is the length of a single corrugated wave.
Preferably, the method for obtaining the center line coordinates comprises the following steps: setting variables T and D, writing a coordinate pixel point with c being 1 in T and D, randomly selecting the pixel coordinates with the remaining unselected c being 1, writing the coordinate point with b being larger than that of T in T, writing the coordinate point with b being smaller than that of D in D, and repeating the steps until all the pixel coordinates with c being 1 are compared, reading the value bmax of the coordinate b in T, and reading the value bmin of the coordinate b in D.
In summary, the length measuring system for the corrugated paper with the small gantry according to the invention measures the length of the paper board on the corrugated paper gantry stacker and measures the corrugated core paper in an image processing manner.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The following specific examples are given by way of illustration only and not by way of limitation, and it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made in the examples without inventive faculty, and yet still be protected by the scope of the claims.
The present invention will be described in detail below by way of examples with reference to the accompanying drawings.
Example 1:
according to the figure 1, the small gantry corrugated paper length measuring system comprises a conveying mechanism 1, a gantry stacking frame 2, an end induction sensor 3, a transmission speed sensor 4, a shooting mechanism 5, a processing chip 6 and a display 7; the shooting mechanism 5 is arranged on the side surface of the transportation mechanism 1 and is aligned with the end induction sensor 3, and a constant illumination mechanism 51 is arranged on the shooting mechanism 5; the end induction sensor 3, the transmission speed sensor 4 and the shooting mechanism 5 are connected to the input end of the processing chip 6, the display 7 is connected to the output end of the processing chip 6, and the end induction sensor 3 is a photoelectric sensor fixed at the gantry stacking frame 2.
Example 2:
a length measuring method for corrugated paper of a small gantry comprises the following steps:
s1, measuring the speed of the corrugated paper to be measured: the corrugated paper is placed on the conveying mechanism 1, and after the speed of the corrugated paper is stable, the conveying speed V of the conveying mechanism 1 is measured through the conveying speed sensor 4;
s2, taking a picture: when the corrugated paper to be detected passes through the gantry stacking frame 2, signals of the end induction sensor 3 change, the shooting mechanism 5 is started to shoot the side face of the corrugated paper at continuous intervals, the width of a picture is L, the ratio of the picture to an actual scene is p, the shooting interval time t is L/Vp, after the corrugated paper to be detected completely passes through the gantry stacking frame 2, the signals of the end induction sensor 3 change again, and the shot pictures are transmitted to the processing chip 6;
s3, image processing:
splicing photos: transversely splicing all the shot pictures together according to the shooting time sequence to form a finished image;
pixelizing the picture into a dot matrix of nxm, and then setting a threshold value to process the picture into black and white;
(a, b, c) in step S3, assigning a value to each pixel point, where a is a horizontal coordinate of the pixel, b is a vertical coordinate of the pixel, i is greater than 0 and less than or equal to n, i is greater than 0 and less than or equal to m, c is 1 or 0, 1 represents black, and 0 represents white; finding the highest point and the lowest point of a pixel point with black color to obtain a wave pattern center line y which is (bmax + bmin)/2, wherein the method for obtaining the center line coordinate comprises the following steps: setting variables T and D, writing a coordinate pixel point with c being 1 in T and D, randomly selecting the pixel coordinates with the remaining unselected c being 1, writing the coordinate point with the b coordinate being larger than T in T, writing the coordinate point with the b coordinate being smaller than D in D, and repeating the steps until all the pixel coordinates with c being 1 are compared, reading the value bmax of the b coordinate in T, and reading the value bmin of the b coordinate in D;
s4, length calculation: calculating the number of corrugated waves according to the pixel point color data, wherein the calculation method of the number of the corrugated waves comprises the following steps: setting variable K, reading (a) in sequencei，bmax+bmin)/2，ci) I is more than 0 and less than or equal to n, ifi-1-ciIf the number of the corrugated waves is 1, adding 1 to the number of the K, and finally, setting the number M of the corrugated waves as K/2;
calculating the total length of the corrugated paper to be measured by combining the length of the single corrugated wave, wherein the total length L of the corrugated paper to be measured is M multiplied by A, and A is the length of the single corrugated wave;
s5, output display: the processing chip (6) transmits the calculated length data to the display for display.
Claims (10)
1. A length measuring system for corrugated paper of a small gantry is characterized by comprising a conveying mechanism (1), a gantry stacking frame (2), an end part induction sensor (3), a transmission speed sensor (4), a shooting mechanism (5), a processing chip (6) and a display (7); the shooting mechanism (5) is arranged on the side face of the conveying mechanism (1) and is aligned with the end induction sensor (3); the end part induction sensor (3), the transmission speed sensor (4) and the shooting mechanism (5) are connected to the input end of the processing chip (6), and the display (7) is connected to the output end of the processing chip (6).
2. The corrugated paper length measuring system of claim 1, wherein the shooting mechanism (5) is provided with a constant illuminating mechanism (51).
3. The small gantry corrugated paper length measuring system according to claim 1, wherein an end induction sensor (3) is fixed on a photoelectric sensor at the gantry stacking rack (2).
4. A length measuring method for corrugated paper of a small gantry is characterized by comprising the following steps:
s1, measuring the speed of the corrugated paper to be measured: the corrugated paper is placed on the conveying mechanism (1), and after the speed of the corrugated paper is stable, the conveying speed V of the conveying mechanism (1) is measured through the conveying speed sensor (4);
s2, taking a picture: when the corrugated paper to be detected passes through the gantry stacking frame (2), the signal of the end induction sensor (3) changes, the shooting mechanism (5) is started to shoot the side face of the corrugated paper at continuous intervals, the width of the picture is L, the ratio of the picture to an actual scene is p, the shooting interval time t is calculated according to the speed of the corrugated paper, after the corrugated paper to be detected completely passes through the gantry stacking frame (2), the signal of the end induction sensor (3) changes again, and the shot picture is transmitted to the processing chip (6);
s3, image processing: splicing photos; pixelizing the picture into a dot matrix of nxm, and then setting a threshold value to process the picture into black and white; assigning the color of the pixel points, and separating out corrugated wave coordinates;
s4, length calculation: calculating the number of corrugated waves according to pixel point color data; calculating the total length of the corrugated paper to be measured by combining the lengths of the single corrugated waves;
s5, output display: the processing chip (6) transmits the calculated length data to the display for display.
5. The method as claimed in claim 4, wherein the interval between photographing in step S2 is set as
6. The method for measuring the length of corrugated cardboard of claim 5, wherein the splicing manner of the photos in step S3 is to splice all the taken photos together transversely in the order of the time of taking the photos to form a finished image.
7. The method for measuring the length of the small dragon corrugated paper as claimed in claim 6, wherein in step S3, the value of each pixel point is recorded as (a, b, c), a is the horizontal coordinate of the pixel, b is the vertical coordinate of the pixel, 0 < i ≦ n, 0 < i ≦ m, c ≦ 1 or 0, 1 represents black, 0 represents white; finding the highest point and the lowest point of the pixel points with black color to obtain the wave pattern central line y which is (bmax + bmin)/2.
8. The method for measuring the length of the small dragon corrugated paper according to claim 5, wherein the method for calculating the number of the corrugated waves in step S4 is as follows: setting variable K, reading (a) in sequencei，bmax+bmin)/2，ci) I is more than 0 and less than or equal to n, ifi-1-ciAnd (5) 1 is added to the K, and the number M of the final corrugated waves is K/2.
9. The method for measuring the length of the small dragon corrugated paper as claimed in claim 8, wherein the total length L of the corrugated paper to be measured is mxa, and a is the length of a single corrugated wave.
10. A length measuring method of small dragon corrugated paper according to claim 7, characterized in that the method for obtaining the center line coordinate comprises the following steps: setting variables T and D, writing a coordinate pixel point with c being 1 in T and D, randomly selecting the pixel coordinates with the remaining unselected c being 1, writing the coordinate point with b being larger than that of T in T, writing the coordinate point with b being smaller than that of D in D, and repeating the steps until all the pixel coordinates with c being 1 are compared, reading the value bmax of the coordinate b in T, and reading the value bmin of the coordinate b in D.
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| CN110026449A (en) * | 2019-04-29 | 2019-07-19 | 沈阳建筑大学 | A kind of on-line measurement system and method based on machine vision |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026449A (en) * | 2019-04-29 | 2019-07-19 | 沈阳建筑大学 | A kind of on-line measurement system and method based on machine vision |
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| 毛晓彪等: "瓦楞纸自动剪切控制系统设计", 《自动化控制理论与应用》 * |
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Application publication date: 20210309 |