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Design of an automated robotic microinjection system for batch injection of zebrafish embryos and larvae

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Microsystems & Nanoengineering 2024年第1期10卷 89-103页

作者： Zhongyi Guo Nana ai Wei Ge qingsong Xu Department of Electromechanical Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina Department of Biomedical Sciences and Centre of Reproduction Development and Aging(CRDA)Faculty of Health SciencesUniversity of MacaoMacaoChina

This paper presents the design of a vision-based automated robotic microinjection system for batch injection of both zebrafish embryos and larvae.A novel visual recognition algorithm based on an automatic threshold and excessive dilatation is introduced to accurately identify the center of zebrafish embryos and larval yolks.A corresponding software system is developed using the producer-consumer model as the framework structure,and a friendly user interface is designed to allow operators to choose from a range of desired functions according to their different *** addition,a novel microstructural agarose device is designed and fabricated to simultaneously immobilize mixed batches of embryos and ***,a prototype microinjection system is fabricated by integrating hardware devices with visual *** experimental study is conducted to verify the performance of the robotic microinjection *** results show that the reported system can accurately identify zebrafish embryos and larvae and efficiently complete batch microinjection tasks of the mixtures with an injection success rate of 92.05%in 13.88 s per *** with manual and existing microinjection systems,the proposed system demonstrates the merits of versatility,excellent efficiency,high success rate,high survival rate,and sufficient stability.

关键词： zebra automated hardware

A SVD-based Digital Watermarking Algorithm for 3D Mesh Models

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A SVD-based Digital Watermarking Algorithm for 3D Mesh Model...

Spreadable Magnetic Soft Robots with On-Demand Hardening

2006 8th International Conference on Signal Processing

作者： Zhou Zude ai qingsong Liu Quan School of Information Engineering Wuhan University of Technology

ISBN: (纸本)9780780397361

＜正＞A new watermarking scheme for the copyright protection of 3D mesh models is proposed in this *** scheme adopts geometric signal processing theory to transform 3D mesh signals into planar regularly sampling signals,and then employs singular value decomposition（SVD） technique to embed *** embedding process includes:global planar parameterization,planar regular sampling, SVD decomposition,watermark embedding,SVD inverse operation,resampling,and at last reconstructing the 3D mesh to recover the original *** results show that our algorithm has good imperceptibility and strong robustness.

关键词： Watermarking Signal processing Signal processing algorithms Signal sampling Mesh generation Signal generators Copyright protection Robustness Transmission line matrix methods Videos

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Research 2024年第3期2023卷 487-498页

作者： Zichen Xu Yuanhe Chen qingsong Xu Department of Electromechanical Engineering Faculty of Science and TechnologyUniversity of MacaoMacaoChina.

Magnetically actuated mobile robots demonstrate attractive advantages in various medical applications due to their wireless and programmable executions with tiny sizes. Confronted with complex application scenarios, however, it requires more flexible and adaptive deployment and utilization methods to fully exploit the functionalities brought by magnetic robots. Herein, we report a design and utilization strategy of magnetic soft robots using a mixture of magnetic particles and non-Newtonian fluidic soft materials to produce programmable, hardened, adhesive, reconfigurable soft robots. For deployment, their ultrasoft structure and adhesion enable them to be spread on various surfaces, achieving magnetic actuation empowerment. The reported technology can potentially improve the functionality of robotic end-effectors and functional surfaces. Experimental results demonstrate that the proposed robots could help to grasp and actuate objects 300 times heavier than their weight. Furthermore, it is the first time we have enhanced the stiffness of mechanical structures for these soft materials by on-demand programmable hardening, enabling the robots to maximize force outputs. These findings offer a promising path to understanding, designing, and leveraging magnetic robots for more powerful applications.

关键词： execution attractive enable

The Long-term Performance Analysis and Comparision of BDS On-board Atomic Clock Based on Precise Clock Products of IGS Analysis Centers

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The Long-term Performance Analysis and Comparision of BDS On...

Planning of DC Electric Spring with Particle Swarm Optimization and Elitist Non-dominated Sorting Genetic Algorithm

第九届中国卫星导航学术年会

作者： Huijie Xue Tianhe Xu qingsong ai Shengchao Wang School of Geology Engineering and Surveying Chang an UniversityXi an Institute of Space Science Shandong University State Key Laboratory of Geo-information Engineering Institute of Geodesy and Geophysics. Chinese Academy of Sciences

As an important load of BDS, the performance of satellite-borne atomic clock directly affects the service level of navigation system. Based on the requirements of navigation system on atomic clocks in orbit, the performance of BDS spaceborne atomic clocks has been studied in recent years. Precise clock products of two IGS analysis centers wum and gbm with sampling interval of 300 seconds from 2014 to 2017 were adopted. The BDS spaceborne atomic clocks were evaluated and analyzed from accuracy, drift rate and stability respectively. The results indicate that, overall, MEO satellite clock performance is the best, followed by IGSO satellite clock, the worst is GEO satellite clock;the accuracy, the daily drift rate and the 10000 seconds stability fluctuate at 7 × 10 4 × 10,-3 × 10 3 × 10, 3 × 10 1.5 × 10 respectively. In terms of drift rate and the 10000 seconds stability, the results of performance analysis of GEO satellite clock using two different precise clock products have great differences, while those of IGSO and MEO satellite clocks have little difference.

关键词： BDS satellite atomic clock accuracy drift stability wum gbm

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 574-583页

作者： qingsong Wang Siwei Li Hao Ding Ming Cheng Giuseppe Buja School of Electrical Engineering and Jiangsu Provincial Key Laboratory of Smart Grid Technology and Equipment Southeast UniversityNanjing 210096China School of Software Engineering Southeast universitySuzhou 215123China

This paper addresses the planning problem of parallel DC electric springs (DCESs). DCES, a demand-side management method, realizes automatic matching of power consumption and power generation by adjusting non-critical load (NCL) and internal storage. It can offer higher power quality to critical load (CL), reduce power imbalance and relieve pressure on energy storage systems (RESs). In this paper, a planning method for parallel DCESs is proposed to maximize stability gain, economic benefits, and penetration of RESs. The planning model is a master optimization with sub-optimization to highlight the priority of objectives. Master optimization is used to improve stability of the network, and sub-optimization aims to improve economic benefit and allowable penetration of RESs. This issue is a multivariable nonlinear mixed integer problem, requiring huge calculations by using common solvers. Therefore, particle Swarm optimization (PSO) and Elitist non-dominated sorting genetic algorithm (NSGA-II) were used to solve this model. Considering uncertainty of RESs, this paper verifies effectiveness of the proposed planning method on IEEE 33-bus system based on deterministic scenarios obtained by scenario analysis.

关键词： DC distribution network DC electric spring non-dominated sorting genetic algorithm particle swarm optimization renewable energy source

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基于光纤激光的高精度三维视觉测量技术

红外与激光工程 2018年第8期47卷 79-86页

作者：洪梓铭艾青松陈昆武汉理工大学信息工程学院湖北武汉430070

随着现代数字制造技术的快速发展,在工业产品测量领域,对微型物体几何尺寸的测量需要满足非接触、高精度、多尺寸等需求,而现有测量技术还不能达到这些要求。为了实现多尺寸、高效、快速、非接触式的精确测量,文中利用光纤耦合激光器光... 详细信息

随着现代数字制造技术的快速发展,在工业产品测量领域,对微型物体几何尺寸的测量需要满足非接触、高精度、多尺寸等需求,而现有测量技术还不能达到这些要求。为了实现多尺寸、高效、快速、非接触式的精确测量,文中利用光纤耦合激光器光束质量好、线宽超细、精度高、单色性好、体积小以及免调节等优势,研制了基于光纤激光的精密非接触测量系统,提出了一种基于光纤耦合激光的超精密视觉测量方法,主要包含基于光纤线激光的目标成像、激光线滤波与提取、测量模型建立及几何参数标定、数据转换和三维重建测量等关键技术。利用光纤激光器向测量物体表面连续发射激光线,采用高分辨率相机,通过照明/不照明两次成像技术获取物体的平面尺寸和高度信息。对激光线图像进行滤波校正,快速提取激光线,对几何参数进行标定和坐标转换,然后进行处理数据,获取物体测量部位的三维测量值。实物测量和对比实验验证了文中测量方法的准确性、快速性和有效性,测量精度可达微米级。为微型物体几何尺寸的三维非接触、高精度、多尺寸测量提供了有效方法和测量仪器。

关键词：光纤激光微型物体非接触超精密测量

Thermal runaway evolution of a 280 Ah lithium-ion battery with LiFePO_(4) as the cathode for different heat transfer modes constructed by mechanical abuse

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Journal of Energy Chemistry 2024年第6期93卷 32-45,I0002页

作者： Zhixiang Cheng Chengdong Wang Wenxin Mei Peng Qin Junyuan Li qingsong Wang State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026AnhuiChina

Lithium iron phosphate batteries have been increasingly utilized in recent years because their higher safety performance can improve the increasing trend of recurring thermal runaway ***,the safety performance and mechanism of high-capacity lithium iron phosphate batteries under internal short-circuit challenges remain to be *** work analyzes the thermal runaway evolution of high-capacity LiFePO_(4) batteries under different internal heat transfer modes,which are controlled by different penetration *** penetration cases involving complete penetration and incomplete penetration were detected during the test,and two modes were performed incorporating nails that either remained or were removed after penetration to comprehensively reveal the thermal runaway mechanism.A theoretical model of microcircuits and internal heat conduction is also *** results indicated three thermal runaway evolution processes for high-capacity batteries,which corresponded to the experimental results of thermal equilibrium,single thermal runaway,and two thermal runaway *** difference in heat distribution in the three phenomena is determined based on the microstructure and material structure near the *** controlling the heat dissipation conditions,the time interval between two thermal runaway events can be delayed from 558 to 1417 s,accompanied by a decrease in the concentration of in-situ gas production during the second thermal runaway event.

关键词： Lithium-ion battery safety Micro short-circuit cell Heat transfer modes Internal short circuit Nail-penetration test

基于线激光的自然条件下路面车辙实时检测方法研究

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红外与激光工程 2018年第6期47卷 119-126页

作者：洪梓铭陈昆荆根强艾青松武汉理工大学信息工程学院湖北武汉430070 交通运输部公路科学研究所北京100088

对路面车辙线激光实时检测方法进行了研究,在自然驾驶条件下,采用激光器向路面连续发射线激光,通过高分辨率相机动态获取路面车辙激光线的序列图像,并对路面车辙进行实时检测。针对路面复杂背景强干扰条件下的车辙激光线难以提取问题,... 详细信息

对路面车辙线激光实时检测方法进行了研究,在自然驾驶条件下,采用激光器向路面连续发射线激光,通过高分辨率相机动态获取路面车辙激光线的序列图像,并对路面车辙进行实时检测。针对路面复杂背景强干扰条件下的车辙激光线难以提取问题,对路面车辙激光线图像进行了特征分析,给出了非负特征测度定义及非负强度计算公式,提出了基于非负特征和峰值连续性的路面车辙激光线提取方法。该方法不再采用图像处理常规方法,而是利用峰值连续性快速跟踪路面车辙激光线的显著脊点与非显著脊点,实现路面复杂背景车辙激光线的快速和精确提取。在不封路、不停车、不阻碍交通的自然运行条件下,进行了大量的路面车辙检测实验,实验结果验证了文中提取方法的有效性和准确性,解决了自然条件下路面车辙激光线的快速和精确提取问题,为路面车辙的自动检测及路面质量评价提供技术支撑。

关键词：路面检测车辙深度线激光非负特征峰值连续性

顾及周期项误差和起点偏差修正的北斗卫星钟差预报

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测绘学报 2016年第S2期45卷 132-138页

作者：艾青松徐天河孙大伟任磊长安大学陕西西安710054 山东大学山东威海264209 地理信息工程国家重点实验室陕西西安710054 青岛农业大学山东青岛266109

根据北斗卫星导航系统星载原子钟自身的物理特性,采用武汉大学IGS数据中心发布的2016年1月1日至2016年11月1日共306天的事后钟差产品进行谱分析。分析结果表明:北斗卫星导航系统的3类卫星钟都存在一定的周期特性;其中GEO和IGSO卫星钟的... 详细信息

根据北斗卫星导航系统星载原子钟自身的物理特性,采用武汉大学IGS数据中心发布的2016年1月1日至2016年11月1日共306天的事后钟差产品进行谱分析。分析结果表明:北斗卫星导航系统的3类卫星钟都存在一定的周期特性;其中GEO和IGSO卫星钟的主周期相对较为明显;GEO卫星钟的主周期依次为12、24、8和6h;IGSO的主周期为24、12、8和6h;而MEO的3个主周期为12.9、6.4和24h。依据各类原子钟的周期特性,同时对各天之间钟差的起始点偏差进行修正,并利用修正模型对北斗卫星钟差进行预报和精度分析。试验结果表明,改进的预报模型能显著提升北斗卫星的钟差预报精度,北斗卫星钟差24h、12h、6h的平均预报精度分别能达到6.55ns、3.17ns和1.76ns。

关键词：卫星钟差谱分析主周期钟差预报