CN115314618A - Carbon fiber carbon filament image on-line acquisition device - Google Patents
Carbon fiber carbon filament image on-line acquisition device Download PDFInfo
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- CN115314618A CN115314618A CN202210932062.0A CN202210932062A CN115314618A CN 115314618 A CN115314618 A CN 115314618A CN 202210932062 A CN202210932062 A CN 202210932062A CN 115314618 A CN115314618 A CN 115314618A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 73
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 31
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 31
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 32
- 230000007547 defect Effects 0.000 claims abstract description 15
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 claims description 6
- 238000003384 imaging method Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000005282 brightening Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013135 deep learning Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Signal Processing (AREA)
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- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses an online acquisition device for carbon fiber carbon filament images, which comprises a linear array camera, an Ethernet communication card module, an ARM (advanced RISC machine) main control card module and an image acquisition card module; the linear array camera and the carbon filament bundle move relatively at a constant speed, and the surface of the carbon filament bundle is scanned and shot; the image acquisition card module is used for acquiring and processing visible light when the linear array camera scans and shoots the carbon filament bundle to obtain carbon filament image data; the ARM main control card module receives the image data, transmits the image data to the Ethernet communication card module, and receives an instruction of the Ethernet communication card module; the Ethernet communication card module transmits the image data received by the ARM main control card module to the server and transmits the instruction sent by the server back to the ARM main control card module; and the server stores the carbon filament image data and detects the carbon filament defects. The invention completes the task of collecting the image of the carbon fiber bundle with large area by combining and embedding hardware under a low-power device, and can quickly realize the automatic collection of the carbon fiber bundle image.
Description
Technical Field
The invention belongs to the technical field of carbon fiber detection, and particularly relates to an online carbon fiber image acquisition device.
Background
The carbon fiber has excellent performances of high strength, low density, high temperature resistance, corrosion resistance, electromagnetic shielding and the like, is an indispensable reinforcing material in composite materials at present, and is widely applied to the fields of aviation, aerospace, navigation and the like. The carbon fiber is used as an important supporting material in the field of aviation, aerospace and navigation three-navigation manufacturing, and the superiority and inferiority of the material of the carbon fiber directly influence the performance of a produced product. For example, the incompletely solidified polymer is swelled by the residual DMSO on the surface to cause the adhesion of the carbon filaments to generate doubling, the doubling can promote the strong instability of the tensile strength of the carbon filament product, and the load born by each carbon fiber monofilament is uneven, thereby directly influencing the quality of the carbon fiber product.
The traditional carbon fiber detection method mainly depends on manual detection, and has the defects of large workload, great influence from subjective experience and unstable detection quality. Therefore, it is necessary to provide a high-precision, high-efficiency and high-automation carbon filament defect online detection method.
In recent years, the deep learning technology is rapidly developed in the field of target detection, and the deep learning technology is applied to a plurality of industrial scenes to detect product defects, so that the detection effect is excellent. Therefore, it is reasonable to apply the deep learning technique to the carbon filament defect detection. The deep learning technology depends on a large amount of carbon filament defect original data, and data acquisition is difficult due to the complex environment of a carbon filament manufacturing site and the large size of a machine.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides the carbon fiber carbon filament image on-line acquisition device, which completes the task of acquiring the large-area carbon filament bundle image by hardware combination and embedding under a low-power device, can improve the precision, speed and intelligent degree of defect detection, has the characteristics of small volume, low power consumption, high resolution, strong stability and the like, can quickly realize the automatic acquisition of the carbon fiber carbon filament image, and reduces the labor cost.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
an online carbon fiber carbon wire image acquisition device comprises a linear array camera, an Ethernet communication card module, an ARM main control card module and an image acquisition card module;
the linear array camera and the carbon filament bundle move relatively at a constant speed, and the surface of the carbon filament bundle is scanned and shot to finish the online shooting of the carbon filament image;
the image acquisition card module is used for acquiring and processing visible light when the linear array camera scans and shoots the carbon filament bundle to obtain carbon filament image data;
the ARM main control card module is used for receiving image data output by the image acquisition card module, transmitting the encoded and compressed image data to the Ethernet communication card module, and monitoring and receiving instructions of the Ethernet communication card module;
the Ethernet communication card module is used for transmitting the image data received by the ARM main control card module to the server and transmitting a control instruction issued by the server back to the ARM main control card module;
the server is used for storing the carbon filament image data and detecting the carbon filament defects;
the control instruction refers to a confirmation signal returned by the server after receiving the image data and a signal which can continuously receive the image data from the ARM main control card module.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the online acquisition device also comprises a protective cover and a light source;
the light source is used for brightening the brightness of the carbon filament bundle in the shooting range to form an imaging effect most beneficial to defect detection;
the protective cover is used for shielding ambient light and avoiding the influence of the ambient light on the image quality of the carbon filament.
The number of the linear array cameras is 3, so that the full-coverage scanning of the surface of the carbon filament bundle is achieved.
The ARM main control card module adopts a Hi3516D chip.
The image acquisition card module comprises an image sensing unit array, an analog signal processing unit, an A/D converter, a time sequence control logic unit and a data bus output interface;
when the image sensitive unit array is irradiated by visible light, a photoelectric effect is generated, and an electric signal is generated in the image sensitive unit;
the electric signal in the image sensing unit is transmitted to the analog signal processing unit and the A/D converter, the carbon filament digital image signal is obtained after signal amplification and analog-to-digital conversion are respectively carried out, and finally the carbon filament digital image signal is output through a data bus interface;
and the time sequence control logic unit is used for generating a time sequence control signal.
The interface protocol in the ethernet communication card module adopts UDP protocol.
The Ethernet communication card module, the ARM main control card module and the image acquisition card module are connected through the flexible circuit board.
The invention has the following beneficial effects:
the device designed by the invention uses three linear array cameras and a light source to obtain the high-resolution and high-resolution carbon fiber image quality and meet the precision requirement; the three linear array cameras are provided with sealing cover protective covers, so that dust and electrostatic interference can be prevented; a linear light source is adopted, the length of the linear light source is 2.2m, and the linear light source can adapt to the field length of a camera; the ARM main control card module exchanges information with the image acquisition card module and the Ethernet communication card module frequently to control the whole image acquisition process; the image acquisition card module is used for acquiring visible light when the linear array camera shoots the carbon filament bundle, and completing image imaging and storing functions; the Ethernet communication card module completes the remote transmission of the image.
The device has the characteristics of miniaturization, low power consumption, high integration and standardization, and can realize the task of acquiring the surface image of the large carbon tow in a complex production environment, thereby greatly contributing to improving the detection precision and speed of the surface defects of the large carbon tow, ensuring the quality of carbon tow products and reducing the working intensity of workers.
Drawings
FIG. 1 is a structural diagram of an on-line carbon fiber carbon filament image acquisition device;
FIG. 2 is a flowchart of an ARM Master control card module;
FIG. 3 is a flowchart of the image capture card module operation;
fig. 4 is an ethernet communication card module work flow diagram.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-4, the invention relates to an on-line carbon fiber image acquisition device, which comprises a linear array camera, an ethernet communication card module, an ARM main control card module and an image acquisition card module;
the linear array camera and the carbon filament bundle move relatively at a constant speed, and the surface of the carbon filament bundle is scanned and shot to finish the online shooting of the carbon filament image;
the image acquisition card module is used for acquiring and processing visible light when the linear array camera scans and shoots the carbon filament bundle to obtain carbon filament image data;
the ARM main control card module is used for receiving the image data output by the image acquisition card module, encoding and compressing the image data, transmitting the encoded and compressed image data to the Ethernet communication card module, and monitoring an instruction of receiving the Ethernet communication card module to finish the extraction and transmission of the carbon wire image data;
the Ethernet communication card module is used for transmitting the image data received by the ARM main control card module to the server and transmitting a control instruction issued by the server back to the ARM main control card module;
the server is used for storing the carbon filament image data and detecting the carbon filament defects;
the control instruction refers to a confirmation signal returned by the server after receiving the image data and a signal which can continuously receive the image data from the ARM main control card module.
The Ethernet communication card, the ARM main control card and the image acquisition card are in a modular design, so that the Ethernet communication card module, the ARM main control card module and the image acquisition card module are obtained, and 3 cards are connected through a Flexible Printed Circuit (FPC).
In a specific embodiment, the online acquisition device further comprises a protective cover and a light source;
the light source is used for brightening the brightness of the carbon filament bundle in the shooting range to form an imaging effect most beneficial to defect detection;
the protective cover is used for shielding ambient light and avoiding the influence of the ambient light on the image quality of the carbon filament.
In a specific embodiment, the number of the line cameras is 3, so that the full-coverage scanning of the surface of the carbon filament bundle is achieved.
In a specific embodiment, the ARM main control card module adopts a Hi3516D chip.
The ARM main control card module exchanges information with the image acquisition card frequently during work.
A high-end code rate controller is embedded in the Hi3516D chip, so that multiple code rate control modes are supported during image storage, and the image processing speed is effectively increased.
The ARM main control card module receives data from the image acquisition card module, codes and compresses the data, and then transmits the data to the Ethernet communication card module, and meanwhile, the ARM main control card module can monitor and receive instructions of the Ethernet communication card, and completes the task of extracting and transmitting carbon filament images.
The work flow of the ARM main control card module is shown in figure 2.
In a specific embodiment, the image acquisition card module is used for acquiring and processing visible light when the linear array camera scans and shoots the carbon filament bundle to obtain carbon filament image data;
the method is completed by the image sensor with high integration level, low power consumption and low cost.
The image sensor comprises an image sensing unit array, an analog signal processing unit, an A/D converter, a time sequence control logic unit, a data bus output interface and the like;
firstly, visible light irradiates an image sensitive unit array to generate a photoelectric effect, and an electric signal is generated in the image sensitive unit;
the electric signal in the image sensing unit is transmitted to a corresponding analog signal processing unit and an A/D converter through a control bus, and the carbon filament digital image signal is obtained after signal amplification and analog-to-digital conversion are respectively carried out and is output through a data bus interface;
the main function of the analog signal processing unit is to amplify the signal and improve the signal-to-noise ratio.
The A/D converter is used for converting the analog signal into a digital signal.
And the time sequence control logic unit is used for generating a plurality of time sequence control signals to trigger the action of each part of circuits in the chip according to a specified time sequence.
The image acquisition card module workflow is shown in fig. 3.
In a specific embodiment, the ethernet communication card module is used for sending the image data of the ARM main control card module to the server through the hundred mega ethernet and simultaneously sending a control instruction sent by the server back to the ARM main control card module;
the interface protocol in the Ethernet communication card module adopts a UDP protocol which is connectionless and delivered in the greatest effort, has high transmission efficiency, and meets the requirements of on-line acquisition and processing of carbon fiber carbon filament images. The ethernet communication card module work flow is shown in fig. 4.
In the specific embodiment, in the carbon fiber detection process, the detection area is 2 meters wide and comprises 252 carbon fiber filaments, and the winding speed of the carbon fibers is 520m/h.
The device designed by the invention uses three linear cameras and light sources to obtain the high-resolution and high-resolution carbon fiber image quality, and meets the precision requirement (0.1 mm). Three line scan cameras all have sealed lid protection casing, prevent dust and electrostatic interference. The light source adopts a linear light source, the length of the linear light source is 2.2m, and the linear light source can adapt to the field length of a camera. The ARM main control card module exchanges information with the image acquisition card module and the Ethernet communication card module frequently, and controls the whole image acquisition process. The image acquisition card module is used for acquiring visible light when the linear array camera shoots the carbon filament bundle, and completing image imaging and storing functions. The Ethernet communication card module completes the remote transmission of the image.
The device has the characteristics of miniaturization, low power consumption, high integration and standardization; the miniaturization refers to designing a compact and high-integration hardware device based on a special position for installing the image acquisition device; the low power consumption means that the acquisition device can stably work for a long time; the high integration level means that the chip on the printed circuit board of the device has high integration level, small volume, simple and convenient construction of a peripheral circuit and high integration level, and is beneficial to the design of miniaturization and low power consumption of an image data acquisition device; standardization is an inevitable result of increase of the demand of the image acquisition device, and is beneficial to improving the reliability of the image acquisition device, reducing the research and development cost, shortening the purchasing period of components and improving the universality of the image data acquisition device.
The invention can realize the task of acquiring the surface image of the large-sized carbon filament bundle in a complex production environment, and greatly contributes to improving the detection precision and speed of the surface defects of the large-sized carbon filament bundle, ensuring the quality of carbon filament products and reducing the working intensity of workers.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (7)
1. An online acquisition device for carbon fiber carbon filament images is characterized by comprising a linear array camera, an Ethernet communication card module, an ARM main control card module and an image acquisition card module;
the linear array camera and the carbon filament bundle move relatively at a constant speed, and the surface of the carbon filament bundle is scanned and shot to complete the online shooting of the carbon filament image;
the image acquisition card module is used for acquiring and processing visible light when the linear array camera scans and shoots the carbon filament bundle to obtain carbon filament image data;
the ARM main control card module is used for receiving image data output by the image acquisition card module, transmitting the encoded and compressed image data to the Ethernet communication card module, and monitoring and receiving instructions of the Ethernet communication card module;
the Ethernet communication card module is used for transmitting the image data received by the ARM main control card module to the server and transmitting a control instruction issued by the server back to the ARM main control card module; and the server is used for storing the carbon filament image data and detecting the carbon filament defects.
2. The on-line carbon fiber carbon filament image acquisition device according to claim 1, further comprising a protective cover, a light source;
the light source is used for brightening the brightness of the carbon filament bundle in the shooting range to form an imaging effect most beneficial to defect detection;
the protective cover is used for shielding ambient light and avoiding the influence of the ambient light on the image quality of the carbon filament.
3. The on-line carbon fiber carbon filament image acquisition device according to claim 1, wherein the number of the line cameras is 3, so as to achieve full coverage scanning of the surface of the carbon filament bundle.
4. The on-line carbon fiber carbon filament image acquisition device of claim 1, wherein the ARM main control card module employs a Hi3516D chip.
5. The on-line carbon fiber filament image acquisition device according to claim 1, wherein the image acquisition card module comprises an image sensitive unit array, an analog signal processing unit, an A/D converter, a sequential control logic unit and a data bus output interface;
when the image sensing unit array is irradiated by visible light, a photoelectric effect is generated, and an electric signal is generated in the image sensing unit;
the electric signal in the image sensing unit is transmitted to the analog signal processing unit and the A/D converter, the carbon filament digital image signal is obtained after signal amplification and analog-to-digital conversion are respectively carried out, and finally the carbon filament digital image signal is output through a data bus interface;
and the time sequence control logic unit is used for generating a time sequence control signal.
6. The on-line carbon fiber carbon filament image acquisition device according to claim 1, wherein an interface protocol in the Ethernet communication card module adopts a UDP protocol.
7. The on-line carbon fiber image acquisition device as claimed in claim 1, wherein the Ethernet communication card module, the ARM main control card module and the image acquisition card module are connected through a flexible circuit board.
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| CN202210932062.0A CN115314618A (en) | 2022-08-04 | 2022-08-04 | Carbon fiber carbon filament image on-line acquisition device |
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| CN202210932062.0A CN115314618A (en) | 2022-08-04 | 2022-08-04 | Carbon fiber carbon filament image on-line acquisition device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291535A (en) * | 2006-04-21 | 2007-11-08 | Toray Ind Inc | Apparatus and method for inspecting carbon fiber fabric |
| CN102275723A (en) * | 2011-05-16 | 2011-12-14 | 天津工业大学 | Machine-vision-based online monitoring system and method for conveyer belt |
| CN113430679A (en) * | 2021-08-26 | 2021-09-24 | 中材新材料装备科技(天津)有限公司 | Production platform for identifying abnormality of carbon fiber in pre-oxidation furnace |
| CN216309817U (en) * | 2021-10-29 | 2022-04-15 | 武汉理工大学 | Carbon fiber part surface defect image acquisition device |
| CN216525503U (en) * | 2021-05-28 | 2022-05-13 | 中复神鹰(上海)科技有限公司 | Carbon fiber prepreg surface defect on-line measuring device based on machine vision |
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2022
- 2022-08-04 CN CN202210932062.0A patent/CN115314618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007291535A (en) * | 2006-04-21 | 2007-11-08 | Toray Ind Inc | Apparatus and method for inspecting carbon fiber fabric |
| CN102275723A (en) * | 2011-05-16 | 2011-12-14 | 天津工业大学 | Machine-vision-based online monitoring system and method for conveyer belt |
| CN216525503U (en) * | 2021-05-28 | 2022-05-13 | 中复神鹰(上海)科技有限公司 | Carbon fiber prepreg surface defect on-line measuring device based on machine vision |
| CN113430679A (en) * | 2021-08-26 | 2021-09-24 | 中材新材料装备科技(天津)有限公司 | Production platform for identifying abnormality of carbon fiber in pre-oxidation furnace |
| CN216309817U (en) * | 2021-10-29 | 2022-04-15 | 武汉理工大学 | Carbon fiber part surface defect image acquisition device |
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