基于YOLOv7近场电纺泰勒锥识别的电压反馈调控  

Voltage Feedback Regulation Based on Near-Field Electrospinning Taylor Cone Recognition with YOLOv7

作　　者：王晗[1,2] 林锐楠 欧伟程 詹道桦 许国杰 蔡念[2,3] Wang Han;Lin Ruinan;Ou Weicheng;Zhan Daohua;Xu Guojie;Cai Nian(School of Electromechnical Engineering,Guangdong University of Technology,Guangzhou 510006,China;State Key Laboratory of Precision Electronic Manufacturing Technology and Equipment,Guangdong University of Technology,Guangzhou 510006,China;School of Information Engineering,Guangdong University of Technology,Guangzhou 510006,China;Foshan NanoFiberlabs Co.,Ltd.,Foshan 528225,China)

机构地区：[1]广东工业大学机电工程学院,广州510006 [2]广东工业大学省部共建精密电子制造技术与装备国家重点实验室,广州510006 [3]广东工业大学信息工程学院,广州510006 [4]佛山轻子测控技术有限公司,广东佛山52822

出　　处：《微纳电子技术》2023年第6期931-938,共8页Micronanoelectronic Technology

基　　金：国家自然科学基金(62171142);广东省自然科学基金(2021A1515011908);广东省重大科技计划(X190071UZ190)。

摘　　要：在近场电纺工艺中,针对泰勒锥状态进行实时监测与调控有利于生成直径一致性更高的微纳射流,从而提高电纺纤维的质量。基于YOLOv7的近场电纺泰勒锥识别算法及电压反馈调控有助于实现上述目标。首先,建立近场电纺监测平台对泰勒锥形态进行实时监测;随后,构建基于YOLOv7泰勒锥识别模型,采用图像处理实时判别泰勒锥在生产过程中的具体形态;最后,对生产时泰勒锥面积实时变化值与设定的标准泰勒锥面积阈值进行对比,使用实时近场电纺电压反馈调控来保障泰勒锥生成的射流尺寸稳定。经实验验证,电压反馈调控下沉积纤维直径的方差为3.86174,远小于未使用电压反馈调控下的方差(24.5291),故上述反馈调控有利于近场电纺工艺生产直径一致性更高的纤维。In the near-field electrospinning process,real-time monitoring and regulation of the Taylor cone state is conducive to the generation of micro-nano jets with higher diameter consistency,and thus the quality of electrospinning fibers can be improved.The near-field electrospinning Taylor cone recognition algorithm based on YOLOv7 and voltage feedback regulation are conducive to achieving the above objectives.Firstly,a near-field electrospinning detection platform was established to monitor the Taylor cone shape in real-time.And then,the Taylor cone recognition model based on YOLOv7 was constructed,and the specific shape of the Taylor cone in the production process was discriminated in real-time by image processing.Finally,the real-time change value of the Taylor cone area during production with the threshold value of the set standard Taylor cone area were compared,and the real-time near field electrospinning voltage feedback regulation was used to ensure the stability of the jet size generated by the Taylor cone.It is verified by experiments that the variance of the deposited fiber diameter with the voltage feedback regulation is 3.86174,which is much smaller than the variance(24.5291)without the voltage feedback regulation.Therefore,the above feedback regulation is conducive to producing fibers with higher diameter consistency by the near-field electrospinning process.

关 键 词：近场电纺 泰勒锥 YOLOv7 实时监测 电压反馈 调控 

分 类 号：TH16[机械工程—机械制造及自动化]