CN105386175B - A kind of fly frame rove uniformity on-line measuring device and detection method - Google Patents
A kind of fly frame rove uniformity on-line measuring device and detection method Download PDFInfo
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- CN105386175B CN105386175B CN201510893689.XA CN201510893689A CN105386175B CN 105386175 B CN105386175 B CN 105386175B CN 201510893689 A CN201510893689 A CN 201510893689A CN 105386175 B CN105386175 B CN 105386175B
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- rove
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/32—Counting, measuring, recording or registering devices
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- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a kind of fly frame rove uniformity on-line measuring device and detection method, belong to textile technology field；The detection means includes low cost CMOS camera apparatus and LED light source device, for obtaining rove image；The detection head device is arranged on moving guide rail and vertical with rove, and the guide rail is fixed on fly frame board, and detection head device can carry out touring movement on the guide rail；The detection method gathers rove appearance images and background image by camera, rove bianry image is obtained after thick Yarn Evenness is split using background subtraction, count the white point quantity of bianry image each column, often capable diameter as in rove image, and calculate quantifying for rove, image procossing special cell differentiates the rove uniformity according to the quantitative change real-time online of rove, be conducive to monitoring rove situation during fly frame in real time, pinpoint the problems, solve the problems, such as in time, be that the yarn quality of follow-up spun yarn lays the foundation.
Description
Technical field
Present invention relates particularly to a kind of rove uniformity on-line measuring device and detection method, belong to textile technology field.
Background technology
Roving Frames are the preparatory process before coarse yarn and spinning fine yarn.Its main task is that the part shared from drafting to spun yarn is led
Stretch, the appropriate twist is applied and by reeling roving on bobbin to rove, form the good flyer bobbin of winding shaping, adapt to spun yarn
The need for feeding and unwind on machine, the quality of spun yarn is improved.
The tester of existing test rove bar evenness has many defects, particularly matching used test stand, such as electricity
Appearance formula Uster sliver evenness tester strip test stand and rove test stand are divided into two kinds, and both are not general, therefore by surveying
Strip is changed to test rove or be changed to the test-strips period of the day from 11 p.m. to 1 a.m by test rove that test stand must be changed, and adds workload；And examination
Test support body product big, weight weight, inconvenient operation；The test stand creel main shaft of domestic same type is longer, slightly collide it is yielding,
Bias, influences measuring accuracy.
And the method for above-mentioned test rove bar evenness is all off-line test, it is impossible to the rove uniformity is carried out online
Detection in real time, this is easy for occurring once going wrong, then can not found in time, and then causes asking for greater loss for producer
Topic.
The content of the invention
It is an object of the invention to：In view of the above-mentioned problems of the prior art, proposing that a kind of rove uniformity is examined online
Device is surveyed, the device during rove formation package on fly frame by setting image detection device to realize the rove uniformity
On-line checking, using image processing techniques measure rove the online uniformity change, realize roving yarn quality automatic detection with
On-line checking, so as to be laid the foundation for the yarn quality for improving follow-up spun yarn.
It is another object of the present invention to：Propose a kind of fly frame rove uniformity online test method, the detection side
Method gathers rove appearance images by camera, and is partitioned into thick Yarn Evenness by background subtraction, by the rove collected ash
Degree image is converted into bianry image, calculates rove outward appearance diameter, and calculate quantifying for rove, image procossing according to the size of diameter
Special cell differentiates the rove uniformity according to the quantitative change real-time online of rove, during being conducive to monitoring fly frame in real time
Rove situation, pinpoints the problems, solves the problems, such as in time, is that the yarn quality of follow-up spun yarn lays the foundation.
Technical solution of the present invention is as follows：A kind of fly frame rove uniformity on-line measuring device of the present invention, it is characterised in that
Including at least one detection head device；The detection head device includes low cost CMOS camera apparatus and LED light source device, is used for
It is online to obtain rove image；The detection head device is arranged on guide rail and angled for vertically obtaining rove image,
And can carry out touring movement,
Further, the detection head device is by camera and image procossing special cell, enlarging lens and LED/light source group
Into.
Further, the guide rail is fixed on fly frame board；
Further, the detection head device is apart from rove 1-40cm.
Further, the camera is low cost CMOS camera, cheap, and resolution ratio is 640 × 480 pixels, frame frequency
For 25fps；Described image processing special cell is integration block device, for the image of collection to be handled, extracts rove straight
Footpath data, and data are analyzed and handled, there is the rove of unusual condition in monitoring；The enlarging lens are 1-6 times and amplified；
The LED/light source is fixed on the front end of enlarging lens, and the acquisition for rove image provides illumination.
Further, after the enlarging lens are installed, its focus is near rove section, no more than using rove section axle center as circle
The heart using 3cm as the scope of the circle of radius in.
Further, the rove uniformity detection control includes parameter setting apparatus, data exception alarm lamp, meter
Calculate result display module and image processing circuit plate；The parameter setting apparatus, data exception alarm lamp, result of calculation show
Show that module is connected with image procossing special cell circuit board respectively.
Further, cam device is used in face battle array CMOS chip, image acquisition process, closes the automatic white flat of CMOS
Weighed function, and the value of white balance is set as into 0.6, is coordinated with corresponding image background light source, and the time for exposure is set as 1/40ms,
Shooting speed is 25fps, to prevent Hz noise.
A kind of online test method of the fly frame rove uniformity of the present invention, comprises the following steps：
Step one：Start rove uniformity detection means, cam device will start the rove institute after rove output device
Place's spatial variations information and the background image without rove are sent to image procossing special cell；
Step 2：Image procossing special cell is analyzed and processed, and detection method is divided thick Yarn Evenness using background subtraction
Cut out, by the rove greyscale image transitions collected into bianry image, (rove is vertical in the picture for statistics bianry image each column
When) white point quantity (in bianry image, white point is rove, and stain is background), rove outward appearance diameter is calculated, and according to diameter
Size calculates that rove is quantified, and image procossing special cell can be according to the uniformity of the quantitative change real time discriminating rove of rove
Situation.
Step 3：Image procossing special cell is calculated after the rove uniformity by result of calculation display module display result；
Step 4：Image procossing special cell calculates the model that the rove uniformity sets the rove uniformity with parameter setting apparatus
Enclose and be compared, so as to differentiate whether the rove uniformity goes beyond the scope, if gone beyond the scope by data exception alarm lamp
Indicate.
Further, whether the rove uniformity, which goes beyond the scope, refers to that signal had super model in the length of continuous more than 4 minutes
Enclose.
Further, in image processing process in units of 30 seconds, after Continuous plus 8 times, wherein when once normal
As a result think normal, and when being abnormal continuous 8 times, judged result is that the spun-yarn fineness uniformity is abnormal.
The algorithm of the spun-yarn fineness uniformity is the pixel count for all rows for counting current thick Yarn Evenness image, and makees
For the width of the rove of every a line, the average of all rows of whole image is calculated first, then calculates the variance of average；When having calculated
After the variance of second image, the mean variance of first and second is solved, after the variance of the 3rd image has been calculated, is asked
The solution mean variance of second and the 3rd, by that analogy, the average of previous of Continuous plus and variance above, calculating process
In with 750 for unit, the value of as 30 seconds is as a unit.
A kind of fly frame rove uniformity on-line measuring device of the present invention, by being set during being wrapped in formation rove
Image detection device is put so as to realize the on-line checking of the rove uniformity, the present invention uses image detection device, pass through image point
Analysis technology, it is possible to achieve automatic detection and on-line checking, so as to be laid the foundation for Automated condtrol.
Brief description of the drawings
The present invention is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 installation site structure schematic diagrams on fly frame for the present invention.
Fig. 2 is the structural representation of image detection of the present invention head device.
Fig. 3 is detection algorithm flow chart of the present invention.
In figure：1- front roller 2- guide rail 3- guide eyelit 4- flier 5- rear roller 6- rail 7- detection head devices 8-
Fly frame board 9- cameras and image procossing special cell 10- enlarging lens 11-LED light sources.
Embodiment
As shown in figure 1, a kind of fly frame rove uniformity on-line measuring device, including at least one detection head device；Inspection
Gauge head unit 7 includes low cost CMOS camera apparatus and LED light source device, for obtaining rove image online；Detection head device 7
On guide rail 2 and it is angled be used to vertically obtain rove image, and can carry out touring movement,
Detection head device 7 is made up of camera and image procossing special cell 9, enlarging lens 10 and LED/light source 11.Guide rail
2 are fixed on fly frame board 8, have flier 4 on fly frame board 8.Detection head device 7 is apart from rove 1-40cm.Rove is passed through
The front roller 1 and rear roller 5 being arranged on rail 6 are crossed, is wound on from guide eyelit 3 on flier 4.
It is preferred that, as shown in Fig. 2 camera is low cost CMOS camera, cheap, resolution ratio is 640 × 480 pixels,
Frame frequency is 25fps；Image procossing special cell is integration block device, for the image of collection to be handled, and extracts rove straight
Footpath data, and data are analyzed and handled, there is the rove of unusual condition in monitoring；Enlarging lens 10 are 1-6 times and amplified；
LED/light source 11 is fixed on the front end of enlarging lens 10, and the acquisition for rove image provides illumination.
After enlarging lens 10 are installed, its focus in rove section nearby, no more than using rove section axle center be the center of circle using 3cm as partly
In the scope of the circle in footpath.
The detection control of the rove uniformity includes parameter setting apparatus, data exception alarm lamp, result of calculation and shows mould
Block and image processing circuit plate；Parameter setting apparatus, data exception alarm lamp, result of calculation display module respectively with image
Handle the connection of special cell circuit board.
Cam device is used in face battle array CMOS chip, image acquisition process, closes CMOS automatic white balance function, and
The value of white balance is set as 0.6, coordinated with corresponding image background light source, the time for exposure is set as 1/40ms, shooting speed
For 25fps, to prevent Hz noise.
As shown in figure 3, a kind of online test method of fly frame rove uniformity of the invention, comprises the following steps：
Step one：Start rove uniformity detection means, cam device will start the rove institute after rove output device
Place's spatial variations information and the background image without rove are sent to image procossing special cell；
Step 2：Image procossing special cell is analyzed and processed, and detection method is divided thick Yarn Evenness using background subtraction
Cut out, by the rove greyscale image transitions collected into bianry image, (rove is vertical in the picture for statistics bianry image each column
When) white point quantity (in bianry image, white point is rove, and stain is background), rove outward appearance diameter is calculated, and according to diameter
Size calculates that rove is quantified, and image procossing special cell can be according to the uniformity of the quantitative change real time discriminating rove of rove
Situation.
Step 3：Image procossing special cell is calculated after the rove uniformity by result of calculation display module display result；
Step 4：Image procossing special cell calculates the model that the rove uniformity sets the rove uniformity with parameter setting apparatus
Enclose and be compared, so as to differentiate whether the rove uniformity goes beyond the scope, if gone beyond the scope by data exception alarm lamp
Indicate.
Further, whether the rove uniformity, which goes beyond the scope, refers to that signal had super model in the length of continuous more than 4 minutes
Enclose.
Further, in image processing process in units of 30 seconds, after Continuous plus 8 times, wherein when once normal
As a result think normal, and when being abnormal continuous 8 times, judged result is that the spun-yarn fineness uniformity is abnormal.
The algorithm of the spun-yarn fineness uniformity is the pixel count for all rows for counting current thick Yarn Evenness image, and makees
For the width of the rove of every a line, the average of all rows of whole image is calculated first, then calculates the variance of average；When having calculated
After the variance of second image, the mean variance of first and second is solved, after the variance of the 3rd image has been calculated, is asked
The solution mean variance of second and the 3rd, by that analogy, the average of previous of Continuous plus and variance above, calculating process
In with 750 for unit, the value of as 30 seconds is as a unit.
Claims (1)
1. a kind of detection method of use fly frame rove uniformity on-line measuring device, comprises the following steps：
Step one：Start rove uniformity detection means, cam device will start empty residing for the rove after rove output device
Between change information and the background image without rove be sent to image procossing special cell；
Step 2：Image procossing special cell is analyzed and processed, and the detection method is split thick Yarn Evenness by background subtraction
Go out, obtain rove image bianry image, the white point quantity of bianry image each column, as rove when statistics rove is vertical in the picture
In often capable diameter in image, the bianry image, white point is rove, and stain is background；And calculate quantifying for rove, image
Handle the quantitative change real time discriminating rove uniformity of the special cell according to rove；
Step 3：Image procossing special cell is calculated after the rove uniformity by result of calculation display module display result；
Step 4：The scope that image procossing special cell calculates the rove uniformity and the parameter setting apparatus setting rove uniformity is entered
Row compares, so as to differentiate whether the rove uniformity goes beyond the scope, is indicated if gone beyond the scope by data exception alarm lamp；
Whether the rove uniformity, which goes beyond the scope, refers to that signal had over range in the length of continuous more than 5 minutes；
In image processing process in units of 30 seconds, after Continuous plus 8 times, wherein result thinks normal when once normal,
And continuous 8 times when being abnormal, judged result is that the spun-yarn fineness uniformity is abnormal；
The algorithm of the rove uniformity is to count the pixel count of all rows of current rove bianry image, and as per a line
Rove width, first calculate all rows of whole image average, then calculate average variance；When having calculated second figure
After the variance of picture, the mean variance of first and second is solved, after the variance of the 3rd image has been calculated, solution second
With the mean variance of the 3rd, by that analogy, the average of previous of Continuous plus and variance above, with 750 in calculating process
Zhang Weiyi unit, the value of as 30 seconds is as a unit.
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| US10929722B2 (en) * | 2017-05-19 | 2021-02-23 | Nec Corporation | Anomaly detection in streaming networks |
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| CN103290560A (en) * | 2012-02-29 | 2013-09-11 | 江南大学 | Method for detecting quality of lattice apron compact spun yarn on line based on machine vision |
| CN103290563A (en) * | 2012-02-29 | 2013-09-11 | 江南大学 | Method for detecting quality of mechanical compact spun yarn on line based on machine vision |
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