城市道路交通智能照明系统设计

为了实现对城市道路照明的智能化管理,运用物联网技术[1]、电力线载波及无线通信技术,构建由服务器、集中器和控制器组成三级网络架构的城市照明智能监控系统。实现控制器、集中器、服务器和监控终端之间的互联,并通过DTU与互联网连接,每一个控制器终端通过独有的ID接入到因特网。系统利用安装在监控中心服务器中的监控软件和数据库、GIS等,实现了对城市照明系统智能化控制和科学管理,是物联网技术在节能减排、创建新型智慧型城市方面的应用场景之一。     

Fisher’s linear discriminant ratio based threshold for moving human detection in thermal video

In video surveillance, the moving human detection in thermal video is a critical phase that filters out redundant information to extract relevant information. The moving object detection is applied on thermal video because it penetrate challenging problems such as dynamic issues of background and illumination variation. In this work, we have proposed a new background subtraction method using Fisher’s linear discriminant ratio based threshold. This threshold is investigated automatically during run-time for each pixel of every sequential frame. Automatically means to avoid the involvement of external source such as programmer or user for threshold selection. This threshold provides better pixel classification at run-time. This method handles problems generated due to multiple behavior of background more accurately using Fisher’s ratio. It maximizes the separation between object pixel and the background pixel. To check the efficacy, the performance of this work is observed in terms of various parameters depicted in analysis. The experimental results and their analysis demonstrated better performance of proposed method against considered peer methods.     

Penalized Fast Subset Scanning

We present the penalized fast subset scan (PFSS), a new and general framework for scalable and accurate pattern detection. PFSS enables exact and efficient identification of the most anomalous subsets of the data, as measured by a likelihood ratio scan statistic. However, PFSS also allows incorporation of prior information about each data element’s probability of inclusion, which was not previously possible within the subset scan framework. PFSS builds on two main results: first, we prove that a large class of likelihood ratio statistics satisfy a property that allows additional, element-specific penalty terms to be included while maintaining efficient computation. Second, we prove that the penalized statistic can be maximized exactly by evaluating only O(N) subsets. As a concrete example of the PFSS framework, we incorporate “soft” constraints on spatial proximity into the spatial event detection task, enabling more accurate detection of irregularly shaped spatial clusters of varying sparsity. To do so, we develop a distance-based penalty function that rewards spatial compactness and penalizes spatially dispersed clusters. This approach was evaluated on the task of detecting simulated anthrax bio-attacks, using real-world Emergency Department data from a major U.S. city. PFSS demonstrated increased detection power and spatial accuracy as compared to competing methods while maintaining efficient computation.     

基于单片机的智能温控风扇设计

本次设计是基于单片机的智能温控风扇。以STC89C52单片机为核心,可以实现对风扇的有效控制。可以根据需要设置不同的温度,如果温度在设定值最大值和最小值之间时则启动风扇弱风档,如果温度超过设定的数值时将会变到大风档,如果温度低于最小值时风扇停止转动,启动什么风挡由外部温度决定。测得的温度值保存在温度传感器DS18B20内部ROM中,断电后保存的数值不变。基于单片机的智能温控风扇可以满足人们的不同需要,具有一定的实用意义。     

二次监视雷达跟踪近程目标的新方法

针对近程目标的机动特性以及在近距离询问信号饱和使应答机抑制等因素造成二次监视雷达不能稳定跟踪目标的现象,提出了一种新的跟踪方法,采用询问编排、功率控制等措施让应答机能有效应答,并通过近程跟踪滤波、航迹融合来实现对近程目标的稳定跟踪。该方法提高了系统的跟踪效能,近程目标的应答率提高到了80%左右,适合于二次监视雷达系统对近距离目标跟踪要求严苛的场合。该方法已在实际工程中成功应用。     

智能楼宇管理系统设计与实现

针对当前楼宇管理的智能化需求,结合当前物联网技术的特点,提出一种基于物联网技术的楼宇智能管理平台。根据楼宇管理的特点,提出楼宇智能管理平台的设计原则,并在原则的指引下,对智能楼宇管理平台的整体架构、网络部署、整体运行逻辑、平台数据接口、路以协议等进行全面的设计与阐述,从而实现了楼宇的全方位的监控,并实现楼宇故障的报警与定位。最后通过测试,验证了平台的可行性。     

智能防误操作系统在配网故障中的研究与应用

本文主要介绍配网智能防误操作系统的构成及功能,从配网调度来看,组建配网调度及处置问题的缩短时间系统能够提高处理故障的效率,并通过各类实践已经证明此系统能够降低配网调度的误调度,还可以减少错误下令的现象。     

面向智能配电的异构融合网络无线资源管理

通信系统是体现智能配电网使用性能的重要因素.基于异构融合网络的通信系统能够更好地满足实际的通信需求.本文从智能配电网通信系统的特点入手,对面向智能配电的异构融合网络无线资源管理进行分析.     

压电倾斜镜精密跟踪控制技术研究现状与发展

研究了广泛用于空间激光通信、自适应光学、目标捕获跟踪等领域的压电倾斜镜光束跟踪控制技术。考虑到压电倾斜镜光束控制系统易出现跟踪精度不高、闭环带宽有限,甚至不稳定等问题,亟需对控制系统跟踪精度和动态响应性能等方面进一步研究和探索。首先介绍了国内、外压电倾斜镜的研制及其控制系统的构成,然后综合讨论了迟滞、谐振、其他干扰等限制压电倾斜镜跟踪性能提高的关键因素,并对各种方法进行了分析和比较。研究表明,目前多数研究结果只实现了部分性能的提高,缺乏对存在问题的系统性研究,尚难以在较宽的频带内实现压电倾斜镜(PFSM)高精度稳定控制。该文指出,采用系统化建模和现代智能控制算法是进一步提高压电倾斜镜控制系统综合性能的发展方向。     

基于实时数据采集的本科高校多媒体智能教室综合管理信息系统的分析与设计

随着多种信息技术的出现,人们开始把信息技术应用到生产、科研、教学及管理的各个领域。多媒体智能教室管理系统在许多高校开始应用,为了满足学校的教学,需要人们对多媒体智能教室管理系统进行进一步的开发。