医院多病床综合实时无线循检后警系统（II型）

一种廉价的医院多病床综合实时循检报警系统，可实现对多个病人点滴输液，体温，血压，脉搏和呼吸等的自动循检，并具有病人紧急传呼和医护人为定时传呼功能，其循检和信呈传输靠无线通信方式进行，其核心电路由数字电路器件，无线通信电路和单片机系统组成。可以实时显示点滴输液速度，记录总输液量，并在点滴输液快完成时自动报警，可以实地显示并记录病人体温，血压，呼吸和脉搏，可以在发出传呼和报警信号时显示并记录需要处理的     

智能多路油井防盗监测系统

介绍一种多路电力线载波油井防盗报警系统,系统的每一个报警点,采用3种不同的传感器作为报警探测组件,减少漏报率;系统的控制中心可通过计算机查询到报警信号,同时利用自动传讯报警器模块组件BP-127向控制人员的BP机发出信息,再次减少了漏报率。     

医院多病床综合实时无线循检报警系统(Ⅱ型)

一种廉价的医院多病床综合实时循检报警系统,可实现对多个病人点滴输液、体温、血压、脉搏和呼吸等的自动循检,并具有病人紧急传呼和医护人为定时传呼功能。其循检和信号传输靠无线通信方式进行。其核心电路由数字电路器件、无线通信电路和单片机系统组成。可以实时显示点滴输液速度,记录总输液量,并在点滴输液快完成时自动报警;可以实时显示并记录病人体温、血压、呼吸和脉博;可以在发出传呼和报警信号时显示并记录需要处理的病床号。     

基于无线通信的起重机运行状态监控系统的研究

提出了一种基于无线通信的起重机运行状态监控系统,在起重机系统上设置一系列的视频监控、报警控制功能,能够自动对起重机的运行状态进行监测,并将监测结果和理论状态信号进行对比,当监测结果和理论状态信号差值超过一定范围时系统自动发出报警信号,并标示处危险源,极大地提升了起重机系统工作的安全性和稳定性,对降低起重机作业人员的劳动强度,提升起重机工作的稳定性和可靠性具有重要意义。     

一种智能型输液监控装置的设计

设计一个智能化的输液速度自动监测与控制装置.该系统由水滴速度测试系统、水速控制系统、显示装置、单片机系统、键盘和报警等系统组成.应用水的压强随着高度差的变化而变化的原理,利用控制步进电动机的升降来控制点滴速度.点滴速度可用键盘来设定,同时在水到达警戒线(2～3cm)以下时能发出报警信号.     

基于80C51的轮胎气压无线报警系统

本文设计了轮胎气压无线报警系统的发射端，该系统主要由汽车轮胎压力传感器，单片机和无线发射装置组成。该系统在轮胎气压欠压或异常时能通过无线发射装置发出报警信号，并通过便携式的无线接收装置通知驾驶员，因此可以确保汽车轮胎在行驶过程中处于正常的压力状态。     

基于差动放大器实现的飞机发动机火灾报警系统

针对某型飞机发动机火警探测系统存在误报率较高的问题,设计了采用差动放大器实现的飞机发动机火灾报警系统,采用差动放大器对火警信号进行采集处理,并进行精确放大,使报警信号的可信度大大增强,根据此信号可以设计飞机发动机的自动灭火装置。实验证明此种方法对解决发动机报警灵敏度和误报率之间的矛盾,具有较高的价值。     

实时智能汽车超载报警系统的研究设计

车辆超载是我国公路运输行业的一个普遍问题,对运输安全的危害很大。利用电阻应变片、惠斯顿电桥、放大电路、A/D转换电路、CPU处理电路和报警装置组成一个实时智能的汽车超载报警系统,可对行驶过程中的汽车进行实时称重,并且当车辆超载时能自动发出报警信号,这对治理超载、保护公路等具有重要意义。     

节能路灯控制系统的设计

利用AT89C52设计了按键输入和显示、光敏电阻感应、人体红外感应及声光电报警等4个模块。当光线充足时,系统不工作,当光线变弱时,系统检索到有行人通过时,自动点亮路灯,当检测到行人不在触发范围内,路灯会以最后一次人体活动时间为界限自动延时10 s后变成第3等级的亮度,为过往车辆提供照明。该系统具有自动调节光线、自动开启和关闭及声光报警的功能。     

论火灾自动报警系统的设计

火灾自动报警系统肩负消防安全防范重任，通过对火灾自动报警系统的设计的系统化分析，保证火灾自动报警系统正常运行。     

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...     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

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.     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

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....