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FPC-BTB detection and positioning system based on optimized YOLOv5

Biomimetic Intelligence & Robotics 2023年第4期3卷 56-66页

作者： Changyu Jing Tianyu Fu Fengming Li Ligang Jin Rui Song School of Control Science and Engineering Shandong UniversityJinan 250000China School of Information and Engineering Shandong Jianzhu UniversityJinan 250101China Shandong Industrial Technology Research Institute Jinan 250100China

With the aim of addressing the visual positioning problem of board-to-board(BTB)jacks during the automatic assembly of flexible printed circuit(FPC)in mobile phones,an FPC-BTB jack detection method based on the optimized You Only Look Once,version 5(YOLOv5)deep learning algorithm was proposed in this *** FPC-BTB jack real-time detection and positioning system was developed for the real-time target detection and pose output synchronization of the BTB *** that basis,a visual positioning experimental platform that integrated a UR5e manipulator arm and Hikvision industrial camera was built for BTB jack detection and positioning *** indicated by the experimental results,the developed FPC-BTB jack detection and positioning system for BTB target recognition and positioning achieved a success rate of 99.677%.Its average detection accuracy reached 99.341%,the average confidence of the detected target was 91%,the detection and positioning speed reached 31.25 frames per second,and the positioning deviation was less than 0.93 mm,which conforms to the practical application requirements of the FPC assembly process.

关键词： Detection and positioning systems Deep learning Small target detection Posture estimation flexible printed circuit

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Morphologies and Properties of Cured Epoxy/Brominated-phenoxy Blends

Morphologies and Properties of Cured Epoxy/Brominated-phenox...

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第三届世界粘接及相关现象大会暨北京粘接学会第十五届学术年会

作者： NAOKI YOKOYAMA SHUNSUKE SAKAI SHINYA TAKAHASHI TOMOYUKI KASEMURA Nippon Steel Chemical Co. Ltd.and Epoxy Resin Development Center of Tohto Kasei Co.Ltd. Department of Applied Chemistry Faculty of EngineeringGifu University1-1 YanagidoGifu-shiGifu 501-1112Japan

The morphologies and properties of epoxy/brominated-phenoxy blends cured with novolac phenolic resin have been *** the brominated-phenoxy content for epoxy was less than 30%with a weight,the continuous phase was formed by the cured ***,when the brominated-phenoxy content was more than 40%with a weight, a phase-inverted morphology was observed by scanning transmission electron microscopy(STEM).In all these cured blends,two discrete T’s were found by dynamic mechanical analysis(DMA).Since the higher T was found at 155℃, the phase could be attributed to cured epoxy ***,since the lower Tg was found at 128℃,the phase could be attributed to *** brominated-phenoxy contents were in 40%～50%with a weight,although brominated -phenoxy of thermoplastics formed a continuous phase,rubbery plateaus of storage modulus(E’) were still found, i.e.,it was found that both properties of thermoplastics and thermoset could exist together in these cured *** the tensile elongation and the tensile strength could be increased together,and the T-peel adhesion strength and the lapshear adhesion strength also could be increased together.

关键词： epoxy phenoxy morphology polymer blends adhesives flexible printed circuit

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苯并噁嗪改性FPC用聚丙烯酸酯胶黏剂的制备与性能研究

苯并噁嗪改性FPC用聚丙烯酸酯胶黏剂的制备与性能研究

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2010年全国高分子材料科学与工程研讨会

作者：周容张爱清中南民族大学化学与材料科学学院

＜正＞多元共聚丙烯酸酯胶用于FPC基材中,具有优异的使用性能,乳液型丙烯酸酯胶因共聚分子量较大、无公害、合成条件相对较易控制,性能比溶液共聚丙烯酸酯胶更好而成为目前FPC工业中最重要的胶种之一。改性丙烯酸酯对比改性环氧的优势... 详细信息

＜正＞多元共聚丙烯酸酯胶用于FPC基材中,具有优异的使用性能,乳液型丙烯酸酯胶因共聚分子量较大、无公害、合成条件相对较易控制,性能比溶液共聚丙烯酸酯胶更好而成为目前FPC工业中最重要的胶种之一。改性丙烯酸酯对比改性环氧的优势是环保,成本较低,溢

关键词： flexible printed circuit adhesive polyacrylate benzonxazine

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