CN105158273A - Optical cable surface defect detecting system based on planar array CMOS cameras - Google Patents
Optical cable surface defect detecting system based on planar array CMOS cameras Download PDFInfo
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Abstract
The invention discloses an optical cable surface defect detecting system based on planar array CMOS cameras. The optical cable surface defect detecting system comprises the one or more planar array CMOS cameras, an industrial personal computer, an analysis detection module, an alarming module and a storage module. A to-be-detected optical cable on a production line is continuously shot through the high-speed planar array CMOS industrial cameras, stripping, swelling, bubbles and the like, caused by impurities of materials or improper technological control in production, of the surface of a jacket of the product can be rapidly detected in real time, production efficiency and product quality are effectively improved, and manufacturing cost and the rejection ratio are reduced. Compared with the prior art, the optical cable surface defect detecting system has the advantages that optical cables which are made of most materials and are of most structures can be detected, the detecting speed and detecting efficiency are higher, cost is lower, and the optical cable surface defect detecting system is quite suitable for online detection on the high-speed production line.
Description
Technical field
The present invention relates to communications optical cable detection technique field, relate to a kind of optical cable surface defects detection system based on planar array type CMOS camera specifically.
Background technology
In recent years, the deployment energetically with 4G network is implemented in the in-depth along with " broadband China " strategy, and China's optical fiber cable industry market enters the flourish phase.The construction of broadband network, the particularly construction of FTTx network, become the major impetus pulling internal optical fiber optical cable demand.But, be subject to the restriction of networking pattern, the fiber-to-the-home universal problem that still there are some, as relatively deficient in conduit resource in city and end access difficulty.In order to overcome these bottlenecks, be that the new special optical cable can applied in a flexible way in multiple network construction mode of representative is subject to increasing attention with air-blowing micro-cable.Air-blowing micro-cable Material selec-tion, production technology and and structural design on all carried out significantly improving, as much as possible the size of cable, pipe, sheath etc. is reduced to minimum, energy maximum using pipeline space, saves construction cost, makes networking have more dirigibility simultaneously.
In the manufacture process of optical cable, a ubiquitous technical barrier is the optical cable surface imperfection that material or inappropriate technology cause, these defects not only can affect the physical strength of optical cable, cause optical fiber impaired, also likely allow the optical characteristics such as the dispersion loss of optical fiber change, therefore must carry out defects detection to optical cable surface before product arrives user.Traditional optical cable Surface testing, mainly adopt electric spark detector, its principle is when high pressure is through the steel band of defective cable jacket or aluminium strip, form gap breakdown and produce spark discharge, warning circuit sends a pulse signal after electric spark being detected, make alarm send sound and light alarm, counter records once.But this detection method is only applicable to the conventional cable of metal level sheath, for adopting all dielectric structure and the optical cable (such as air-blowing micro-cable, optical cable used for access network etc.) of surface structure abnormal shape, can only manually after-combustion inspection, feel with hand the defective locations that detects de-material or bulge and repair, the lower and manpower and materials of at substantial of its detection efficiency.
A kind of optical cable surface defects detection system utilizing Linear Array Realtime industrial camera of recent appearance, principle, it can meet the detection demand of most shape and structure.But it is higher to the requirement of luminous source system, and because line camera is lined by line scan the existence of motion and corresponding position feedback element, add system complexity and cost, cause image acquisition time long, be difficult to accomplish that real-time synchronization detects on optical cable production line at a high speed.In addition, what adopt due to this detection system is CCD industrial camera, although its camera pixel precision is higher, for adopting the optical cable surface defects detection of Linear Array Realtime camera, performance is superfluous in fact, system cost only can be made expensive, cause the waste of testing cost.
Therefore, the present inventor needs a kind of new technology of design badly to improve its problem.
Summary of the invention
The present invention aims to provide a kind of optical cable surface defects detection system based on planar array type CMOS camera, it can at a high speed and detect the situations such as jacket surface de-material, bulge, bubble that product causes because of impurities of materials or improper process control when producing in real time, effectively improve production efficiency and product quality, reduce manufacturing cost and disqualification rate.
For solving the problems of the technologies described above, technical scheme of the present invention is:
Based on an optical cable surface defects detection system for planar array type CMOS camera, comprising:
One or more planar array type CMOS camera, be arranged in system frame, for the photo on captured in real-time 360 degree, optical cable surface to be checked, and send it to analysis detection module, this photo comprises length information and the temporal information of operation, described optical cable to be checked comprise in air-blowing minisize optical cable, all dielectric special optical cable, Access Network special optical cable one or more.
Industrial computer, for being communicated with described planar array type CMOS camera by network, controls the shutter speed of described planar array type CMOS camera, and the speed of itself and production line is matched.
Described analysis detection module, photo for being taken by planar array type CMOS camera extracts feature and classifies after the image processing techniques of image denoising, passivation, illumination compensation, determine optical cable whether defectiveness and defect kind, if defectiveness, send defect information to alarm module and memory module.
Described alarm module, is made staff's Timeliness coverage problem for being given the alarm by warning circuit and takes effective treatment measures.
Described memory module, for preserving the photo of fault location optical cable, records and the running length at position, display defect place and shooting time.
Preferably, the both sides of described planar array type CMOS camera are respectively equipped with one or more lighting source, are provided with one or more reflector between two lighting sources.
Preferably, also comprise speed pickup, it is arranged in production line, passes to described industrial computer for the real-time rate signal by production line.
Preferably, described planar array type CMOS camera is high speed surface configuration CMOS industrial camera.
Preferably, described industrial computer is communicated with described planar array type CMOS camera by gigabit networking.
Preferably, described system frame is loop system support, and optical cable to be checked passes from system frame, and whole system support is fixed on the end of production line.
Preferably, described loop system support is evenly provided with four planar array type CMOS cameras, each planar array type CMOS camera circumference 90 degree, interval, the center line of planar array type CMOS camera lens and the axes intersect of optical cable to be checked and and axes normal.
Preferably, described defect kind comprises the de-material of jacket surface, bulge, bubble, aperture, concavo-convex, constriction, surface scratches, variable color.
Preferably, described lighting source is LED area light source, and LED area light source annularly system frame circumference is laid with 8, and described reflector annularly system frame circumference is laid with 4.
Adopt technique scheme, the present invention at least comprises following beneficial effect:
Optical cable surface defects detection system based on planar array type CMOS camera of the present invention, by high speed surface configuration CMOS industrial camera, the optical cable to be checked in production line is taken pictures continuously, can at a high speed and detect the situations such as jacket surface de-material, bulge, bubble that product causes because of impurities of materials or improper process control aborning in real time, effectively improve production efficiency and product quality, reduce manufacturing cost and disqualification rate.The present invention compared with prior art, can detect the optical cable of most material and structure, detection rates and efficiency higher, cost is lower, is highly suitable for the on-line checkingi on high-speed production streamline.
Accompanying drawing explanation
Fig. 1 is the structural representation of the optical cable surface defects detection system based on planar array type CMOS camera of the present invention;
Fig. 2 is the structured flowchart of the optical cable surface defects detection system based on planar array type CMOS camera of the present invention.
Wherein: 1. planar array type CMOS camera, 2. system frame, 3. optical cable to be checked, 4. lighting source, 5. reflector.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1 to Figure 2, be a kind of optical cable surface defects detection system based on planar array type CMOS camera according to the invention, comprise:
One or more planar array type CMOS camera 1, is arranged in system frame 2, and for the photo on captured in real-time 360 degree, optical cable 3 surface to be checked, and send it to analysis detection module, this photo comprises length information and the temporal information of operation.Preferably, described optical cable to be checked 3 comprises one or more in the optical cable of air-blowing minisize optical cable, all dielectric special optical cable, Access Network special optical cable and other surface structure exceptions.The Linear Array Realtime camera adopted in prior art, its working method determines that it can only imaging on one wire, two dimensional image is obtained with Linear Array Realtime camera, scanning motion must be equipped with, and in order to the correspondence position of each pixel of image on measured piece can be determined, the devices such as grating also must be equipped with to record the coordinate of each scan line.Due to the existence of scanning motion and corresponding position feedback element, add system complexity and cost; The precision of images may reduce by the impact of scanning motion, finally affects measuring accuracy.And the planar array type camera that the present embodiment adopts, it directly can obtain two-dimensional image information, measurement image relative straightforward, and namely each frame picture of its shooting contains the information of Linear Array Realtime camera large number of rows, makes efficiency and speed all relative higher.Although all comparatively the performance of CMOS camera is better for CCD camera resolution and resolution simultaneously, its market price costly.The signal to noise ratio (S/N ratio) representative value of CCD is 46dB, and the gray-scale value contrast at surperficial sheath and broken cable place will be far smaller than this value in the sight of our defect recognition, and the less CMOS camera of cost can the task of perfect competent defect recognition.The present embodiment structure is simple, easy to operate, because adopt planar array type phase function to obtain higher detection rates and efficiency, and camera is cmos sensor camera can also greatly reduce costs.
Industrial computer, for being communicated with described planar array type CMOS camera 1 by network, controls the shutter speed of described planar array type CMOS camera 1, and the speed of itself and production line is matched.The speed of taking pictures of its chain of command configuration CMOS camera 1, makes defects detection both can adapt to the production line balance of (if linear velocity is 100-300m/min) at a high speed, can ensure detectivity >=100% again, namely not fail to report.
Described analysis detection module, photo for being taken by planar array type CMOS camera 1 extracts feature and classifies after the image processing techniques of image denoising, passivation, illumination compensation, determine optical cable whether defectiveness and defect kind, if defectiveness, send defect information to alarm module and memory module.
Described alarm module, is made staff's Timeliness coverage problem for being given the alarm by warning circuit and takes effective treatment measures.
Described memory module, for preserving the photo of fault location optical cable, recording and the running length at position, display defect place and shooting time, facilitating follow-up repairing to recover and check.
Preferably, the both sides of described planar array type CMOS camera 1 are respectively equipped with one or more lighting source 4, are provided with one or more reflector 5 between two lighting sources 4.
Preferably, also comprise speed pickup, it is arranged in production line, passes to described industrial computer for the real-time rate signal by production line.
Preferably, described planar array type CMOS camera 1 is high speed surface configuration CMOS industrial camera.
Preferably, described industrial computer is communicated with described planar array type CMOS camera 1 by gigabit networking.
Preferably, described system frame 2 is loop system support 2, and optical cable 3 to be checked passes from system frame 2, and whole system support 2 is fixed on the end of production line.
Preferably, described loop system support 2 is evenly provided with four planar array type CMOS cameras 1,90 degree, the circumferential interval of each planar array type CMOS camera 1, the center line of planar array type CMOS camera 1 camera lens and the axes intersect of optical cable to be checked 3 and and axes normal.
Preferably, described defect kind comprises the de-material of jacket surface, bulge, bubble, aperture, concavo-convex, constriction, surface scratches, variable color.
Preferably, described lighting source 4 is LED area light source, and LED area light source annularly system frame 2 circumference is laid with 8, and described reflector 5 annularly system frame 2 circumference is laid with 4.
The present embodiment adopts the non-contact detection method based on machine vision, by high speed surface configuration CMOS industrial camera, the optical cable to be checked 3 in production line is taken pictures continuously, can at a high speed and detect the situations such as jacket surface de-material, bulge, bubble that product causes because of impurities of materials or improper process control aborning in real time, effectively improve production efficiency and product quality, reduce manufacturing cost and disqualification rate.The present invention compared with prior art, can detect the optical cable of most material and structure, detection rates and efficiency higher, cost is lower, is highly suitable for the on-line checkingi on high-speed production streamline.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1., based on an optical cable surface defects detection system for planar array type CMOS camera, it is characterized in that, comprising:
One or more planar array type CMOS camera, be arranged in system frame, for the photo on captured in real-time 360 degree, optical cable surface to be checked, and send it to analysis detection module, this photo comprises length information and the temporal information of operation, described optical cable to be checked comprise in air-blowing minisize optical cable, all dielectric special optical cable, Access Network special optical cable one or more;
Industrial computer, for being communicated with described planar array type CMOS camera by network, controls the shutter speed of described planar array type CMOS camera, and the speed of itself and production line is matched;
Described analysis detection module, photo for being taken by planar array type CMOS camera extracts feature and classifies after the image processing techniques of image denoising, passivation, illumination compensation, determine optical cable whether defectiveness and defect kind, if defectiveness, send defect information to alarm module and memory module;
Described alarm module, is made staff's Timeliness coverage problem for being given the alarm by warning circuit and takes effective treatment measures;
Described memory module, for preserving the photo of fault location optical cable, records and the running length at position, display defect place and shooting time.
2. as claimed in claim 1 based on the optical cable surface defects detection system of planar array type CMOS camera, it is characterized in that: the both sides of described planar array type CMOS camera are respectively equipped with one or more lighting source, are provided with one or more reflector between two lighting sources.
3. as claimed in claim 1 or 2 based on the optical cable surface defects detection system of planar array type CMOS camera, it is characterized in that: also comprise speed pickup, it is arranged in production line, passes to described industrial computer for the real-time rate signal by production line.
4. the optical cable surface defects detection system based on planar array type CMOS camera as described in as arbitrary in claim 1-3, is characterized in that: described planar array type CMOS camera is high speed surface configuration CMOS industrial camera.
5. the optical cable surface defects detection system based on planar array type CMOS camera as described in as arbitrary in claim 1-4, is characterized in that: described industrial computer is communicated with described planar array type CMOS camera by gigabit networking.
6. the optical cable surface defects detection system based on planar array type CMOS camera as described in as arbitrary in claim 1-5, it is characterized in that: described system frame is loop system support, optical cable to be checked passes from system frame, and whole system support is fixed on the end of production line.
7. as claimed in claim 6 based on the optical cable surface defects detection system of planar array type CMOS camera, it is characterized in that: described loop system support is evenly provided with four planar array type CMOS cameras, each planar array type CMOS camera circumference 90 degree, interval, the center line of planar array type CMOS camera lens and the axes intersect of optical cable to be checked and and axes normal.
8. the optical cable surface defects detection system based on planar array type CMOS camera as described in as arbitrary in claim 1-7, is characterized in that: described defect kind comprises the de-material of jacket surface, bulge, bubble, aperture, concavo-convex, constriction, surface scratches, variable color.
9. as claimed in claim 7 based on the optical cable surface defects detection system of planar array type CMOS camera, it is characterized in that: described lighting source is LED area light source, LED area light source annularly system frame circumference is laid with 8, and described reflector annularly system frame circumference is laid with 4.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105938228A (en) * | 2016-06-20 | 2016-09-14 | 西安西古光通信有限公司 | Fiber loose sleeve bulge detection apparatus |
| CN106124515A (en) * | 2016-07-04 | 2016-11-16 | 佛山科学技术学院 | A kind of air spring bar surface defects detection system and detection method thereof |
| CN106198557A (en) * | 2016-07-01 | 2016-12-07 | 江苏亨通光电股份有限公司 | A kind of nonmetal all dielectric air-blowing micro-cable cable surface detection device |
| CN109580655A (en) * | 2018-12-14 | 2019-04-05 | 武汉华星光电半导体显示技术有限公司 | Substrate detection system and method for testing substrate |
| CN110441328A (en) * | 2019-09-04 | 2019-11-12 | 广东奥普特科技股份有限公司 | A kind of hawser vision-based detection mould group |
| CN111835981A (en) * | 2020-07-01 | 2020-10-27 | 上海视界纵横智能科技有限公司 | Industrial scanning equipment and method capable of identifying transmission speed |
| CN113252684A (en) * | 2021-04-29 | 2021-08-13 | 国网冀北电力有限公司唐山供电公司 | Electric power optical cable surface defect recognition device and method |
| CN114935802A (en) * | 2022-05-13 | 2022-08-23 | 长飞光纤光缆股份有限公司 | Optical cable outer sheath gas polishing assembly, system and method in optical cable production |
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| CN106198557A (en) * | 2016-07-01 | 2016-12-07 | 江苏亨通光电股份有限公司 | A kind of nonmetal all dielectric air-blowing micro-cable cable surface detection device |
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| CN110441328A (en) * | 2019-09-04 | 2019-11-12 | 广东奥普特科技股份有限公司 | A kind of hawser vision-based detection mould group |
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| CN113252684A (en) * | 2021-04-29 | 2021-08-13 | 国网冀北电力有限公司唐山供电公司 | Electric power optical cable surface defect recognition device and method |
| CN114935802A (en) * | 2022-05-13 | 2022-08-23 | 长飞光纤光缆股份有限公司 | Optical cable outer sheath gas polishing assembly, system and method in optical cable production |
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Application publication date: 20151216 |