建筑机器人自主定位及行走轨迹规划方法

为优化机器人行走规划路径,开展建筑机器人自主定位及行走轨迹规划方法的设计研究。将建筑机器人的整个工作平面划分为数千个小区域,标定摄像机参数,进行建筑机器人空间坐标自主定位;将虚实耦合作为前提条件,利用BIM模型中各实体的位置信息,进行机器人行走导航地图的构建;引进Unty3D建模工具,使用Solidworks软件,构建机器人实验操作平台,将模型导入Unty3D的物理引擎中,生成建筑机器人运动学规范模型;引进A*算法,进行机器人运动空间全局路径的寻优,以此实现对机器人行走轨迹的规划。实验结果表明：设计方法可以在确保规划路线躲避空间中所有障碍物的基础上,保证规划的路线为最短路线。     

基于梯度博弈的RFID室内定位算法

随着普适计算的不断发展,室内定位技术成为了当今研究的热点问题。室内空间的复杂性使得室内空间的定位精度一直无法满足应用的需求。为了获得更加高效稳定的算法,提出了一种基于梯度和博弈论的室内定位算法,其能够较为有效地提高室内空间的定位精度。在算法中,提出了一种室内的符号划分方法,并利用其对室内空间进行了分割以辅助定位算法。最后以室内为实验环境对算法进行了验证,分析结果表明,该算法拥有良好的定位效果,并且相对于现有算法更稳定。     

基于感知规则集策略的约束空间RFID室内符号定位算法

随着普适计算的不断发展,室内定位技术的研究也成为当今研究的热点问题。室内定位技术的不断进步使得RFID也开始部署到各种各样的室内场景。为了提高室内空间中的定位精度,提出了一种基于感知规则集策略的约束空间RFID室内符号定位方法。算法基于室内空间中的符号,通过定义感知情况来确立定位规则,使得算法具有良好的室内空间适应性,且使用少量的阅读器即可实现较高精度的定位。为了提高定位精度,引入了感知规则集的概念,对场景中的情况抽象提取,进一步增加算法定位精度。最后,以约束空间中的室内场景作为实验环境对算法进行验证,分析结果表明,在室内空间中算法的定位精度及抗干扰能力优于现有算法。     

利用信道状态信息的室内定位方法

室内定位是基于位置服务研究的关键问题,WIFI作为一种廉价易得的信号源被广泛应用在室内定位系统中。但是室内复杂环境造成同一点处的WIFI接收信号强度随时间变化范围较大,影响了基于WIFI接收信号强度的室内定位系统的性能。为了克服这个问题,提出了基于信道状态信息的室内定位方法。利用信道状态信息有效值非线性回归得出测量点与信号接入点之间的距离。利用测量点与多个不同信号接入点之间的距离回归出最后的定位结果。实验结果表明,相比典型的基于WIFI信号接收强度对数衰减模型的定位方法,方法有效提高了定位结果的准确度。     

推进商场室内地图的产业化应用

引言目前国内外很多企业、科研院所针对室内地图、定位、导航和位置服务的技术和应用进行研究,力争为人们生活提供更为精细化的导航和位置服务,科技部明确要构建以古代神话太阳神＂羲和＂命名的广域室内外高精度定位导航系统,提升和延拓卫星导航系统服务到＂最后一公里＂,拥有世界上最领先的室内定位技术能力,形成室外亚米级、室内优于3米的无缝定位导航能力。随着室内定位技术的发展和商业领域的应用。     

面向智能交通系统的仿真路网快速建模方法

提出了一种面向智能交通系统的仿真路网模型,与传统路网模型相比,增强了几 何表达和拓扑表达能力,同时其上可附着丰富的交通属性数据,能够满足精细化智能交通仿真 的需求。在此基础上,研究了一种路网数据迁移方法,从现有电子地图快速提取并构建面向智 能交通系统的道路路网。通过对几何精确性、拓扑完备性和建模高效性的测试表明,该路网模 型及其建模方法,提高了交通仿真基础路网建模的效率,降低了建模成本,为智能交通仿真的 广泛应用提供了高效、可靠的道路数据来源。     

基于RSSI的低成本室内三维空间定位模型研究

在当前物联网环境下,为确保物联网的经济性、完整性和扩展性,针对三维空间复杂的二维参量延伸及干扰因素,研究基于RSSI构建低成本的室内物联网3D定位系统。通过构建合适的三维空间定位模型以及进一步优化数据处理的方法,能够获得较好的定位效果,并且为更高精度的定位奠定了一定的现实基础。     

室内双色数据集上的反向最近邻查询

随着Wi-Fi、RFID等室内定位技术的发展,产生了越来越多的基于室内空间的位置服务需求。目前已有文献提出了针对室内环境的范围查询和最近邻查询,而双色反向最近邻（bichromatic reverse nearest neighbor,BRNN）查询作为常见的空间查询类型,在室内空间中尚未有相关的研究。为此,提出了基于兴趣点集合的兴趣点融合图模型,并提出了基于路径、基于楼层和基于单元的3种剪枝策略,用于在查询处理时削减搜索空间。在兴趣点融合图和剪枝策略的基础上,提出了室内双色反向最近邻（indoor bichromatic reverse nearest neighbor, IBRNN）查询算法Smart。Smart算法通过对兴趣点融合图中的图元素的检查,从而判断与该图元素关联的移动对象是否有可能属于结果集。最后通过实验,对所提算法的有效性和高效性进行了验证。     

BREW平台下移动位置服务系统研究和实现

详尽阐述了BREW平台下移动位置服务的应用开发, 分析了移动位置服务的系统结构和移动定位技术.总结两种定位业务模型,即自我定位和第三方定位,并详细介绍了BREW平台下移动位置服务的实现方法及应用开发的特点.     

中国古建筑的L系统建模新方法

中国古建筑的数字化保护问题日益成为计算机和建筑学科的研究重点,但其结构巧妙、类型丰富,且建模工程耗时等,给研究工作带来很多挑战。针对上述问题,提出了一种快速的数字建模方法,通过深入分析并抽取建筑特征,建立了古建筑L系统构件模型库及构件特征库,利用虚拟装配过程控制创建真实、精确的虚拟古建筑3D模型。结果表明,这种方法具有建模精确、生成快速等优点,可对中国古代建筑遗产进行有效的数字保护。     

基于iOS平台的地下停车场导航系统研究

相关统计结果表明,截至2016年底,我国机动车保有量已达2.9亿辆,且保持年均3%的高速增长,其结果是全国室内停车场数量的快速增长。但是,复杂的室内建筑结构环境,使得传统的GPS性能急剧下降,不能很好满足当前停车场导航的需求,大大降低了现有停车场的运营效率。研究设计了一种基于iBeacon的地下停车场导航导航系统,测试结果表明,系统平均定位误差为1.66米,持续导航时定位误差在1.5至2米之间概率为85.3%,系统为有效解决室内停车场的寻车导航问题提供了一种良好的解决方案。     

Indoor location identification technologies for real-time IoT-based applications: An inclusive survey

The advent of the Internet of Things has witnessed tremendous success in the application of wireless sensor networks and ubiquitous computing for diverse smart-based applications. The developed systems operate under different technologies using different methods to achieve their targeted goals. In this treatise, we carried out an inclusive survey on key indoor technologies and techniques, with to view to explore their various benefits, limitations, and areas for improvement. The mathematical formulation for simple localization problems is also presented. In addition, an empirical evaluation of the performance of these indoor technologies is carried out using a common generic metric of scalability, accuracy, complexity, robustness, energy-efficiency, cost and reliability. An empirical evaluation of performance of different RF-based technologies establishes the viability of Wi-Fi, RFID, UWB, Wi-Fi, Bluetooth, ZigBee, and Light over other indoor technologies for reliable IoT-based applications. Furthermore, the survey advocates hybridization of technologies as an effective approach to achieve reliable IoT-based indoor systems. The findings of the survey could be useful in the selection of appropriate indoor technologies for the development of reliable real-time indoor applications. The study could also be used as a reliable source for literature referencing on the subject of indoor location identification.     

Where are we in understanding the effects of where we are?

This paper briefly reviews research studies of interest to environmental ergonomists. It includes some recent work on the health effects of office lighting, especially the effects of daylighting, fluorescent lighting and full-spectrum lighting. It also covers studies of indoor air quality in offices, especially investigations of localized air filtration and the sick building syndrome. It argues the value of a systematic, ergonomics approach to designing the built environment.     

一种高职楼室内分布系统设计方案

高职楼是我校西校区的主要教学楼之一,为了更好的覆盖TD-SCDMA信号,需要在楼内做室内分布系统。由于高职楼尚无2G室内分布系统,且GSM信号不理想,因此本方案中将采用GSM 900和TD-SCDMA合路的方法做此室内分布系统。首先,在做方案前我们需要做相关的现场勘测,并根据勘测结果确定工程规模及主要设备类型;其次,在方案的设计时要计算好相关的参数,使其达到规范要求;最后,根据目前信号覆盖现状和前面计算的相关参数进行详细的方案设计,并绘制出相关的点位图、系统图和原理图。下面本文将以我校高职楼室内信号覆盖解决方案来探讨如何做好室内分布系统。     

Microbiological pollution and ocular infection in CAD operators: an on-site investigation

A large number of workers are currently employed in tasks involving the use of computer based equipment. Much research has been carried out both on prevalence and incidence of ocular and visual disorders as well as on occupational asthenopia. Less attention has been given to investigating the possibility of a microbiological pollution of Video Display Unit (VDU) workstations and to the consequent possible development of work-related ocular infections. The authors investigated the presence of bacteria and fungi on Computer Assisted Design (CAD) workstations and in the conjunctival sac of the operators.     

Improvement of Kalman filters for WLAN based indoor tracking

Location Based Service (LBS) cannot be realized unless the location of the user is available. For indoor LBS, indoor positioning must be utilized and many researchers have been working on indoor positioning and tracking. For example, Extended Kalman filter (EKF) was exploited in Bluetooth based indoor positioning. Nowadays, WLAN (Wireless Local Area Network) is available virtually everywhere. Thus, WLAN based indoor positioning and tracking is more economical than Bluetooth based ones. This paper proposes a new WLAN based EKF indoor tracking method by extending existing Bluetooth based EKF positioning method. After analyzing the experimental results of it, we modified it to use K-NN method in the measurement stage of it. Then we propose to further improve the accuracy of indoor tracking by adjusting the parameter values referring to the map information. Experimental results comparing our method with other previous methods are discussed.     

室内遮挡多人跟踪

提出一种在固定摄像机室内遮挡条件下的多人跟踪算法,包括基于改进的独立成分分析模型的运动前景分割、数据关联与合并检测和基于贪心搜索的遮挡目标定位三部分。将方法应用于室内多目标遮挡,结果表明该算法对发生遮挡的目标数量、目标被遮挡程度以及目标运动模式均无约束。     

WiFi定位的应用和实现

WiFi是一种可以将个人电脑、手持设备（如PDA、手机）等终端以无线方式互相连接的技术。通过WiFi连接的电子设备,摆脱了有线的束缚,所以,Wi-Fi逐渐成为各种电子设备的基本连接方式。     

Indoor vs. outdoor scene classification in digital photographs

This paper proposes a new technique for the classification of indoor and outdoor images based on edge analysis. Our technique is based on analysing edge straightness in images. We make an original proposal that indoor images have a greater proportion of edges that are straight compared to outdoor images, and use multi-resolution estimates on edge straightness to improve our results. We also consider this method's possible applications in a real-time system. We compare our proposed technique with a number of other approaches that have been published on indoor/outdoor classification of images and convincingly show on a large database that our method generates much higher accuracy.     

Improving the accuracy of ultrasound-based localisation systems

We present an improvement to ultrasound-based indoor location systems like Cricket (Priyantha et al. The Cricket location-support system, 2000). By encoding and modulating the ultrasound pulses, we are able to achieve greater accuracy in distance measurements. Besides improving the distance measurements, we improve the position update rate by synchronising the active beacons. We also propose a method that could further improve the update rate by superimposing encoded ultrasound pulses. Further, an experimental evaluation of our improvements is presented.