CN105784718A - Finished cable appearance inspection equipment - Google Patents
Finished cable appearance inspection equipment Download PDFInfo
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- CN105784718A CN105784718A CN201610250167.2A CN201610250167A CN105784718A CN 105784718 A CN105784718 A CN 105784718A CN 201610250167 A CN201610250167 A CN 201610250167A CN 105784718 A CN105784718 A CN 105784718A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
- G01N21/8914—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the material examined
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Abstract
The invention discloses finished cable appearance inspection equipment which comprises an upper computer, an image acquisition unit, a pay-off wheel, a take-up wheel, a first auxiliary wire wheel and a second auxiliary wire wheel, wherein a cable is led out of the pay-off wheel, and is wound around the first auxiliary wire wheel and the second auxiliary wire wheel and then wound on the take-up wheel, so that the same section of the cable passes through an image acquisition area for three times; when the cable passes through an acquisition area of the image acquisition unit, the image acquisition unit acquires a cable image, and the image is analyzed and processed by the upper computer; when the upper computer determines that the cable is defective, a stop signal is transmitted, and the take-up wheel and the pay-off wheel stop working. With the adoption of a manner of identifying cable appearance defects by a machine, the problems of low labor efficiency and high error rate are solved.
Description
Technical field
The invention belongs to cable external inspection technology field, relate to image processing techniques, be specifically related to a kind of finished cable appearance detection device.
Background technology
Finished cable visual examination is the important ring in cable manufacturing process, at present, finished cable visual examination manually carries out, in checking process, the two ends of cable are actinobacillus wheel and take-up pulley respectively, the linear velocity that actinobacillus wheel and take-up pulley maintain like, makes cable keep tensioned state, relies on the artificial outward appearance to cable to check.Very easily there is visual fatigue in this hand inspection mode, and the another side that sight line be can't see can not be checked, along with the requirement of cable product Surface Quality is more and more stricter, there are the flaws such as burr, crack, speckle in the cable outward appearance of processed finished products, become a key of cable quality problem, in the urgent need to address.
Summary of the invention
According to above the deficiencies in the prior art, the technical problem to be solved is to propose the appearance detection device of a kind of finished cable, replace traditional desk checking by the mode of machine vision inspection, solve Traditional Man check system inefficiency, it is easy to the problem made mistakes.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: a kind of finished cable appearance detection device, including host computer, image acquisition unit, actinobacillus wheel, take-up pulley, first boost line wheel and the second boost line wheel, after cable is drawn from actinobacillus wheel, walk around the first boost line wheel and the second boost line wheel, it is wound on take-up pulley, make same transversal cable three times through image acquisition region, cable is through image acquisition acquiring unit pickup area, image acquisition unit gathers cable map picture, and transfer to host computer to analyze and process, when host computer regards as flaw cable, send stop sign, take-up pulley and actinobacillus wheel is made to quit work.Described inspection equipment also includes background panel, and described background panel is white, for the background panel of image acquisition region, is arranged on lower section or the side of cable.Described image acquisition unit includes snapshot controller during process, video camera, image pick-up card and luminaire, and snapshot controller during process controls to pass host computer after image pick-up card gathers image digitized.Described video camera is ccd video camera or cmos image sensor.Described ccd video camera adopts monochrome camera.Described inspection equipment also includes white LED light source, and the angle α in the incident ray of light source and cable axle center is:
Wherein, dminThe minimum diameter of the cable flaw scope for pre-setting.Described white LED light source adopts the illumination of low angle strip source, and strip source is spent 10 to 15.
The medicine have the advantages that (1) adopts the mode of cable apparent flaws of machine recognition, it is to avoid man efficiency is low and error rate is high problem.(2) by arranging boost line wheel, image acquisition is made to be absent from blind area, it is ensured that visual examination comprehensive.
Accompanying drawing explanation
Below the content expressed by this specification accompanying drawing and the labelling in figure are briefly described:
Fig. 1 is the inspection equipment structure chart of specific embodiments of the invention one.
Fig. 2 is the layout viewing in the cable visual examination region of specific embodiments of the invention two.
Wherein, 1 first boost line is taken turns, 2 second boost lines are taken turns, 3 background panel.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, mutual alignment between the such as involved shape of each component of the specific embodiment of the present invention, structure, each several part and annexation, effect and operation principle, the manufacturing process of each several part and operate with method etc., it is described in further detail, to help those skilled in the art that the inventive concept of the present invention, technical scheme are had more complete, accurate and deep understanding.
Specific embodiment one: the cable appearance detection device of the present embodiment includes host computer, image acquisition unit, actinobacillus wheel, take-up pulley, background panel, special light source, the first boost line wheel and the second boost line wheel, before appearance detection device is started working, need first to be fixed on actinobacillus wheel and take-up pulley at the two ends of cable, during work, making the linear velocity that actinobacillus wheel is identical with take-up pulley maintenance, cable is in exceptionally straight state through detection region.In outward appearance detection zone territory, background panel is set, cable from background panel through out-of-date, image acquisition unit obtains the image of cable, and image is uploaded to host computer, image is analyzed processing by host computer, when detecting identification and belonging to substandard products, sends stop sign, make actinobacillus wheel and take-up pulley stop operating, and send alarm signal prompting staff's process.
Background panel adopts white panel, because cable is all coloured cable, uses white background plate can strengthen the contrast of picture, it is simple to machine recognition, improves and check precision.General outward appearance detection all only carries out an image recognition, and the cable appearance detection device that the present invention adopts adopts three times and identifies operation, and detects operation by three times and merge among an inspection equipment, does not increase process costs and equipment cost.As it is shown in figure 1, move towards figure for cable of the present invention through detection region, after cable is drawn from actinobacillus wheel one end, take turns around later from the first boost line, then lay out from the second assist with cable, finally roll up on take-up pulley.Background board is arranged on the lower section of cable, extracts image from upside.As long as the speed of retractable cable of controlling well wheel and image acquisition unit obtain the interval of image, it is ensured that same cable of disconnecting is examined three times, and does not increase the data volume of image procossing.
Image acquisition unit includes snapshot controller during process, ccd video camera, image pick-up card, the trigger mechanism of event is that internal clocking triggers, control to capture frequency by regulating internal clock signal, internal clocking signals to snapshot controller during process by touching, snapshot controller during process controls to be sent to host computer, the collection of complete paired cable real time imaging after image pick-up card gathers cable map picture digitized.
Adopt power be the white light LEDs of 1W as special light source, suppress unwanted part in image, the key character in highlight moving target region by light source irradiation.Different angular illumination is to obtaining the quality of image and important.The diameter assuming cable is m (unit mm), the surface of cable occurs flaw, the flaw degree of depth and height more than 1mm, and length at least accounts for the cable of the 1/5 of diameter length more than n, n, regards problem cable as, it is necessary to parking maintenance.Namely the minimum diameter d of cable flaw can be calculated according to known conditionsminWith the angle of incident ray Yu axle center, i.e. incident angle α.
Taking above-mentioned angle of incidence to irradiate cable, the flaw part of cable surface can produce bigger shaded area, shows obviously shadow character.Therefore, when adopting the surface of bright white illumination radio cable, the angle in light source and camera lens axle center should be greater than α, less than 90 degree, and when angle is closer to 90 degree, the edge contour of flaw can be more and more clear.
Ccd video camera adopts monochrome camera, and monochrome camera only comprises single strength portion, and image procossing gets up relatively simple, processes the time shorter, and cost is preferential compared with color video camera.
The video signal of the object that video camera exports is carried out Real-time Collection by image pick-up card, digital picture is left in one or more passages of image storage unit after A/D changes, according to the instruction that the computer received sends, a certain two field picture is still in image memory channel, namely gathering or capture a two field picture, the image gathered is processed by last host computer.
The check process of the present embodiment is as follows: first the cable checked will be needed to be fixed on actinobacillus wheel and take-up pulley, in inspection area, namely background panel substrate area, first boost line wheel and the second boost line wheel are set, cable walks around the first boost line wheel and the second boost line wheel, after inspection equipment starts, controlled to capture picture frequency by internal clock signal, then image is processed by host computer, when the problem such as crack, spine being detected, send stop sign to actuator, make actinobacillus wheel and take-up pulley shut down, remind staff to process.
Specific embodiment two: the main design thought of the present embodiment is: adopt special light source to irradiate the upper and lower side of cable, whole cable is made to be absent from shadow region, the image of camera collection cable under test upper and lower side, the image gathered is processed by host computer, judge whether the phenomenons such as jagged, crack, speckle, and on LED display display defect image, send alarm signal to staff.
The cable appearance detection device of the present embodiment includes host computer, image acquisition unit, actinobacillus wheel, take-up pulley, background panel, special light source, the first boost line wheel and the second boost line wheel, before appearance detection device is started working, need first to be fixed on actinobacillus wheel and take-up pulley at the two ends of cable, during work, making the linear velocity that actinobacillus wheel is identical with take-up pulley maintenance, cable is in exceptionally straight state through detection region.In outward appearance detection zone territory, background panel is set, cable from background panel through out-of-date, image acquisition unit obtains the image of cable, and image is uploaded to host computer, image is analyzed processing by host computer, when detecting identification and belonging to substandard products, sends stop sign, make actinobacillus wheel and take-up pulley stop operating, and send alarm signal prompting staff's process.
As shown in Figure 2, layout viewing for the cable visual examination region of the present invention, cable from actinobacillus wheel out after, after walking around the first boost line wheel and the second boost line wheel, it is wound on take-up pulley, the background board of white is set in the side of cable, cable is typically all coloured cable, with white bottoming, it is possible to enhancing contrast ratio, make cable clear-cut.Because cable walk around first boost line wheel after, the one side of background board is walking around the first boost line wheel face to the one side of background board dorsad, therefore, as long as having taken shooting angle, it is possible to show in a sub-picture cable up and down or inside and outside two sides.Background panel is arranged on the side of cable.The cable appearance detection device that the present embodiment adopts can check two sides up and down of cable simultaneously, the method not having to adopt the multiple equipment of the latter of repeatedly taking pictures, but twice is taken pictures and is completed by once obtaining image by the improvement of frame for movement, it does not have increase equipment cost and time cost.
Owing to each pixel is had an independent amplifier to change by cmos image sensor, substantial amounts of data can be processed at short notice, it is applied in the image acquisition units of the present embodiment, the speed of whole inspection technique can be improved, therefore, the present embodiment adopts CMOS digital image sensor OV7620 as the sensor gathering image.
Adopt power be the white light LEDs of 1W as external light source, suppress unwanted part in image, the key character in highlight moving target region by light source irradiation.Different angular illumination is to obtaining the quality of image and important.The diameter assuming cable is m (unit mm), the surface of cable occurs flaw, the flaw degree of depth and height more than 1mm, and length at least accounts for the cable of the 1/5 of diameter length more than n, n, regards problem cable as, it is necessary to parking maintenance.Namely the minimum diameter d of cable flaw can be calculated according to known conditionsminWith the angle of incident ray Yu axle center, i.e. incident angle α.
Taking above-mentioned angle of incidence to irradiate cable, the flaw part of cable surface can produce bigger shaded area, shows obviously shadow character.Therefore, when adopting the surface of bright white illumination radio cable, the angle in light source and camera lens axle center should be greater than α, less than 90 degree.The present embodiment light source adopts the illumination of low angle strip source, and strip source is spent 10 to 15.
The present embodiment adopts a pair LED light source that two sides up and down of cable are irradiated simultaneously, and the irradiating angle of two light sources is on pair of parallel line, in opposite direction.
The check process of the present embodiment is as follows: first the cable checked will be needed to be fixed on actinobacillus wheel and take-up pulley, in inspection area, namely background board substrate area, first boost line wheel is set, cable is from actinobacillus wheel out, after walking around the first boost line wheel and the second boost line wheel, it is wound on take-up pulley, after inspection equipment starts, controlled to capture picture frequency by internal clock signal, then image is processed by main control unit, when crack being detected, burr, during the problems such as speckle, stop sign is sent to actuator, actinobacillus wheel and take-up pulley is made to shut down, staff is reminded to process.Wherein the output of the alarm signal output circuit of main control unit triggers the power circuit that actuator is take-up stand and Wire twisting frame, when problem cable being detected, by disconnecting Wire twisting frame power supply, makes Wire twisting frame stop.
Above in conjunction with accompanying drawing, the present invention is exemplarily described; the obvious present invention implements and is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that the design of the method for the present invention carries out with technical scheme; or the not improved design by the present invention and technical scheme directly apply to other occasion, all within protection scope of the present invention.Protection scope of the present invention should be as the criterion with claims protection defined.
Claims (7)
1. a finished cable appearance detection device, it is characterized in that, including host computer, image acquisition unit, actinobacillus wheel, take-up pulley, first boost line wheel and the second boost line wheel, after cable is drawn from actinobacillus wheel, walk around the first boost line wheel and the second boost line wheel, it is wound on take-up pulley, make same transversal cable three times through image acquisition region, cable is through image acquisition acquiring unit pickup area, image acquisition unit gathers cable map picture, and transfer to host computer to analyze and process, when host computer regards as flaw cable, send stop sign, take-up pulley and actinobacillus wheel is made to quit work.
2. finished cable appearance detection device according to claim 1, it is characterised in that described inspection equipment also includes background panel, described background panel is white, for the background panel of image acquisition region, is arranged on lower section or the side of cable.
3. finished cable appearance detection device according to claim 1, it is characterized in that, described image acquisition unit includes snapshot controller during process, video camera, image pick-up card and luminaire, and snapshot controller during process controls to pass host computer after image pick-up card gathers image digitized.
4. finished cable appearance detection device according to claim 3, it is characterised in that described video camera is ccd video camera or cmos image sensor.
5. finished cable appearance detection device according to claim 4, it is characterised in that described ccd video camera adopts monochrome camera.
6. the angle α in finished cable appearance detection device according to claim 1, it is characterised in that described inspection equipment also includes white LED light source, the incident ray of light source and cable axle center is:
Wherein, dminThe minimum diameter of the cable flaw scope for pre-setting.
7. finished cable appearance detection device according to claim 6, it is characterised in that described white LED light source adopts the illumination of low angle strip source, and strip source is spent 10 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250167.2A CN105784718B (en) | 2016-04-21 | 2016-04-21 | A kind of finished cable appearance detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250167.2A CN105784718B (en) | 2016-04-21 | 2016-04-21 | A kind of finished cable appearance detection device |
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| CN105784718A true CN105784718A (en) | 2016-07-20 |
| CN105784718B CN105784718B (en) | 2018-12-28 |
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| CN201610250167.2A Active CN105784718B (en) | 2016-04-21 | 2016-04-21 | A kind of finished cable appearance detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106643568A (en) * | 2016-12-24 | 2017-05-10 | 常州高晟传感技术有限公司 | Cable angle detection device based on computer vision, and method of cable angle detection device |
| CN108107305A (en) * | 2017-12-28 | 2018-06-01 | 重庆市南方阻燃电线电缆有限公司 | A kind of cable detecting device |
| CN111837011A (en) * | 2018-04-13 | 2020-10-27 | 梅勒菲尔股份有限公司 | Surface scanner, arrangement and method for surface defect detection of cables |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106643568A (en) * | 2016-12-24 | 2017-05-10 | 常州高晟传感技术有限公司 | Cable angle detection device based on computer vision, and method of cable angle detection device |
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| CN108107305A (en) * | 2017-12-28 | 2018-06-01 | 重庆市南方阻燃电线电缆有限公司 | A kind of cable detecting device |
| CN111837011A (en) * | 2018-04-13 | 2020-10-27 | 梅勒菲尔股份有限公司 | Surface scanner, arrangement and method for surface defect detection of cables |
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| CN105784718B (en) | 2018-12-28 |
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Effective date of registration: 20181107 Address after: 241000 a high level family member hospital on the north side of Fuxing Road, Chengguan Town, Lixin County, Bozhou, Anhui, China Applicant after: LIXIN ZHONGSHAN MEDICINE TECHNOLOGY Co.,Ltd. Address before: 231400 Fan Gang Town, Hean Road, Tongcheng, Anqing, Anhui Applicant before: ANHUI YILI CABLE Co.,Ltd. |
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Effective date of registration: 20221026 Address after: Room 1809, Zhongxing Business Enterprise Development Center, Pingshang Town, Lingang Economic Development Zone, Linyi City, Shandong Province, 276000 Patentee after: Shandong Lingang Intelligent Manufacturing Industrial Park Co.,Ltd. Address before: 241000 a high level family member hospital on the north side of Fuxing Road, Chengguan Town, Lixin County, Bozhou, Anhui, China Patentee before: LIXIN ZHONGSHAN MEDICINE TECHNOLOGY Co.,Ltd. |