基于多传感器的智能垃圾桶

针对生活中经常出现的垃圾桶中垃圾溢出问题,基于多传感器设计了一种智能垃圾桶.介绍了这一智能垃圾桶的结构,分析了工作原理.这一智能垃圾桶可以在垃圾将要满前发出预警,提醒工作人员及时清理,起到保护环境的作用.     

基于单片机的智能垃圾桶系统设计

本文介绍了一种智能垃圾桶的设计方法,它以AT89C51单片机为核心。实现垃圾桶的感应开盖,延时自动关盖;当检测到垃圾桶满时,发出无线信号给主机。主机通过程序判断哪个垃圾桶满并给出相应的提示信息。该系统使得工作人员对分散在各处的多个垃圾桶的管理更加方便,大大提高了管理效率。     

全向轮智能垃圾桶设计

为了向居住在高密度住宅区的人们提供更舒适的生活条件,设计了一种新型全向轮智能垃圾桶,住户可用手机控制垃圾桶在楼层内自主移动收集垃圾。本设计基于STM32硬件架构搭建移动机器人控制系统平台,采用智能手机与全向轮智能垃圾桶间的WiFi通信系统进行连接,通过红外感应系统控制垃圾桶盖开合。与传统垃圾桶相比,全向轮智能垃圾桶更加灵活性,功能性更强,可以节约人力资源,并为同类智能垃圾桶设计提供理论基础。     

基于物联网的智能垃圾桶系统设计

本文介绍一种基于物联网的智能垃圾桶系统的方法,它以CC2530为核心,实现垃圾桶的感应自动开盖和关闭;当超声波检测到垃圾的距离小于10cm时,触发电机的转动。因此垃圾桶的盖自动关上。垃圾桶处理系统监控中心检测出满的垃圾桶,发出处理命令。当垃圾得到清理,超声波检测到的距离大于10cm时,触发电机的转动,打开垃圾桶,该系统基于C/S模式下,可通过网络控制各个垃圾桶的工作。提高了管理效率。     

一种新型压缩式垃圾桶的设计与制作

分析介绍了几种常见压缩垃圾桶的性能与结构特点,基于杠杆原理及四杆机构的综合,进行创新设计并制作了一款压缩式垃圾桶。该垃圾桶可以使垃圾在即将满桶时,及时实施垃圾的压缩,以便有效提高垃圾桶的储存能力,较大程度降低环卫工人的劳动强度和对环境的污染程度。     

一种新型智能垃圾桶设计

介绍了一种新型智能垃圾桶。该垃圾桶按照单片机定时指令或手机APP控制,通过全向轮行走机构运动到指定位置后,舵机控制垃圾桶开关前门,打包机构将垃圾袋打包后由推板推出,实现垃圾自动打包及推出的功能。经实践,该垃圾桶能够完成预定任务,有较为广泛的应用与推广价值。     

一种新型地下垃圾桶及其提升机构

针对国内垃圾桶环保性、美观性较差的现状及城市垃圾清运现代化的发展趋势，介绍了一种新颖、独特的地下垃圾桶及其提升机构的基本原理；论证了该垃圾桶提升机构的可靠性、实用性、经济性；并介绍了该产品目前的生产应用状况。     

基于SolidWorks深埋式垃圾桶底部结构设计

利用SolidWorks软件进行深埋式垃圾桶的3种设计方案三维建模。根据深埋式垃圾桶实际工作环境及产品材料属性确定有关边界条件;利用SolidWorks Simulation有限元分析软件,对3种不同设计方案进行分析计算、比较。根据理论计算结果并结合深埋式垃圾桶滚塑成型工艺,得出不同结构设计的合理性,为深埋式垃圾桶的结构优化提供分析依据。     

可移动智能垃圾桶定位及检测技术

为了体现智能家居的理念,同时给居住在高密度住宅区的居民提供更便利舒适的居住环境,设计了一种可移动智能垃圾桶,由移动机器人平台搭载垃圾桶对楼层内的不同住户产生的生活垃圾进行收集,并提出了垃圾桶定位以及满溢的检测方法。采用基于STM32的硬件架构搭建移动机器人控制系统平台,采用WiFi模块实现移动平台的室内定位,同时利用智能手机与智能垃圾桶间的WiFi通信系统实现对垃圾桶行走的控制,通过红外检测系统实现垃圾桶盖的智能开合以及判断桶内垃圾是否满溢。样机试用表明,该设计功能性强,定位准确,垃圾满溢检测的实时性好。     

电子感应式新型环保垃圾桶在福州问世

一种不用人体直接接触即可开启的电子感应式新型环保自动翻盖垃圾桶,日前由福州九星企业集团公司开发成功。 由微电脑芯片控制的这种电子垃圾桶,利用安装在投料口附近的红外传感器将物体接近的信号转换成电信号,传输给原动器触发控制装置,产生相应的机械动作带动桶盖开启或关闭。当人的手或物体接近投料口约 １５ ｃｍ时,垃圾桶盖便会自动开后;等垃圾投入完毕,垃圾桶盖又会自动关闭,不需接触垃圾桶。从而解决了现有带盖垃圾桶需手动或脚踩开盖存在的人体因接触垃圾桶而被细菌感梁的隐患。 该产品外观造型采用了人体工程学原理设计,…     

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.     

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....     

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。     

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.