我国首台空瓶检测机器人诞生

我国首台“高速自动化流水线上的多传感器融合智能空瓶检测机器人”在湖南大学诞生。该机器人设计方案具有创新性，总体技术达到国际先进水平，日前通过湖南省科技厅有关专家鉴定。在展示现场，启动系统后，这一聪明宝贝便通过实时图象分析，对流水线上的啤酒空瓶开始快速检测。酒瓶质量有问题、瓶内有残留物等不合要求的空瓶都不能逃过它的火眼金睛，而且速度惊人，每小时可检测瓶口、瓶底7.2万个，瓶身4.5万个。据这一项目的负责人介绍，目前只有德国和美国能生产该类机器人。此产品一问世，即引起国内有关企业的浓厚兴趣，现已有多家啤酒…     

多传感器数据融合技术在多相流参数测量中的应用

对于多相流动系统,由于多传感器系统比单传感器具有优越性,所以,数据融合技术在多相流参数检测领域的应用越来越受到关注.对多传感器数据融合技术作了回顾,介绍了多传感器数据融合技术在多相流参数检测,如流型辨识、多相流流体界面分布成像等方面的应用情况,并对这项技术在多相流参数检测方面所面临的挑战和前景作了分析.     

计算机泛视觉系统中多传感器信息融合技术研究

建立了航空透明件的超声无损检测系统,把多传感器的检测信息和人的感知信息利用模糊积分进行融合,实现对航空透明件的缺陷识别。实验结果表明,采用多传感器信息融合技术可以降低系统的不确定性,使超声检测与识别系统的性能提高。     

多传感信息融合技术的油烟监测系统设计应用

研究城市油烟气体排放的监测系统,在油烟检测对象中应用多传感器数据融合技术,克服单传感器检测的局限性。指明面临的问题和油烟研究对象。阐述传感器信息采集和嵌入式系统构建。详细探讨融合方法Dempster-Shafer证据理论在油烟信息采集处理系统中的应用。并讨论结果。     

基于多传感器融合技术的楼道照明检测系统设计

传统楼道照明系统中使用单一传感器检测外界环境,存在可靠性差、人性化程度低等问题,通过对单片机控制技术、多传感器融合理论的深入研究,提出采用人体红外传感器模块、人体微波传感器模块和光敏电阻模块组成的多传感器检测系统,该检测系统不仅提高了检测系统的可靠性,而且使照明系统人性化程度大大提高。通过在proteus中对所建立的电路模型进行仿真,结果表明,所设计的检测系统满足使用要求,研究内容有较高的应用价值。     

信息融合技术在电路板无损检测中的应用研究

多传感器信息融合技术已成为一个十分活跃的研究领域,它应用的范围越来越广。通过检测电路工作时电子元件的温度和关键点电压两方面的数据信息,对数据信息进行融合,从而确定故障元件,达到电路板无损检测。分析了多传感器数据融合算法,并将该算法有效地应用于电路板无损检测系统中,提高了系统诊断能力。     

抽油管缺陷检测的多传感器融合技术

将多传感器信息融合技术应用于抽油管缺陷在线检测系统.油管缺陷定量检测的多传感器信息融合模型的建立分别在数据层、特征层和决策层三个融合层次上进行;选取4路传感器信号进行信号直接融合,通过硬件直接形成油管的偏磨信号;建立了基于插值法的偏磨缺陷的定量分析方法,并给出了实测结果.对于坑状缺陷,通过对28路传感器所观测的目标进行统一的特征融合,提取特征向量,利用神经网络的决策模型完成了坑状缺陷的量化分析.     

面向高速磨削过程工艺优化的多传感器融合检测

针对脆硬性材料高速磨削过程中加工特性复杂及信号难以捕捉的特点,研制了一种基于多传感器融合的智能检测系统。针对脆硬性材料磨损过程非线性强时变特点,结合多种信号特征提取及融合技术对磨削过程的多传感器在线检测结果进行分析,重点解决高速磨削过程中工艺系统稳定性检测、动态特性识别和分析问题。该系统通过在高速磨床上进行实验,证明了上述系统的有效性。     

基于多传感器数据融合的智能故障诊断系统

多传感器数据融合的典型应用实例就是过程监测和故障诊断,它是智能故障诊断系统中的最基本、最有效的信息处理工具;而智能故障诊断系统通常都是在多传感器数据融合的基础上进行综合诊断.研究了多传感器信息融合系统的层次结构和融合策略,改进了单一D-S证据理论的融合方法;在分析了多传感器数据融合技术和智能故障诊断的系统要求后将两项技术进行了有机的结合,最后提出了一种新的基于多传感器数据融合的智能故障诊断系统的结构框架.     

控制技术在空瓶检测过程中的应用

空瓶检测机主要用于检测回收的饮料瓶的缺陷、赃物、残留液等,在现代化的高速的饮料生产包装线上,空瓶检测机是不可缺少的高科技设备之一.是集光、机电、传感技术、图像处理与识别为一体的综合性高科技设备.介绍了空瓶检测机的工作原理及控制技术在空瓶检测机的应用.着重介绍了基于PLC的控制系统基于DSP的控制系统以及基于视觉传感器的...     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.