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Communicating with sensors has long been limited either to wired connections or to proprietary wireless communication protocols. Using a ubiquitous and inexpensive wireless communication technology to create Sensor Area Networks (SANs) will accelerate the extensive deployment of sensor technology. Bluetooth, an emerging, worldwide standard for inexpensive, local wireless communication is a viable choice for SANs because of its inherent support for some of the important requirements – low power, small form factor, low cost and sufficient communication range. In this paper we outline an approach, centered on the Bluetooth technology, to support a sensor network composed of fixed wireless sensors for health monitoring of highways, bridges and other civil infrastructures. We present a topology formation scheme that not only takes into account the traffic generated by different sensors but also the associated link strengths, buffer capacities and energy availability. The algorithm makes no particular assumptions as to the placement of nodes, and not all nodes need to be in radio proximity of each other. The output is a tree shaped scatternet rooted at the sensor hub (data logger) that is balanced in terms of traffic carried on each of the links. We also analyze the scheduling, routing and healing aspects of the resulting sensor-net topology. 相似文献
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蓝牙与IEEE802.11g无线局域网(Wireless Local Area Network,WLAN)都工作在2.4GHz频段上,因此它们之间存在一定的干扰。分析了蓝牙与IEEE802.11g通信系统之间的干扰,并提出了解决这一问题的两种方法:自适应跳频和删除标记法,并对两种方法的性能做了比较。 相似文献
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蓝牙技术是一种短距离无线通信技术,具有低成本、低功耗、灵活、快速、抗干扰能力强等特点,目的是取代终端的连接电缆.为提高部队的作战效能,采用蓝牙技术和计算机测量与控制技术,研制了机载火控故障诊断系统;该系统在实际应用中取得了良好效果,并具有诊断结果准确、自动化程度高、工作稳定可靠、操作简便、易于转移和维护等优点,为技术人员进行机载火控系统的性能检测与故障诊断提供了便利. 相似文献
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IrBurst is a session/presentation layer protocol dedicated for high speed large volume information transfer over IrDA links.
The protocol is developed by IrDA in order to complement the existing protocol OBEX which is best suited for small files.
This paper presents a mathematical model for IrBurst over the IrDA protocol stacks taking into account the presence of bit
errors and multiple simultaneously applications. The performance of IrBurst is examined considering TinyTP buffer sizes and
the number of IrBurst application connections as parameters. The contribution of this work is to develop a mathematical model
for IrBurst, investigate the compatibility of IrBurst to low layer protocols, as well as providing suitable design guidelines
for IrDA devices for high performance of IrBurst.
Pi Huang received the B.Sc. degree in Electrical and Electronic Engineering from University of Central Lancashire, U.K., in 2001, the M.Sc.
degree in Telecommunications from University College London, U.K., in 2002 and the Ph.D degree in the Personal Wireless Networks
and Outdoor Optical Links from Bournemouth University, U.K., in 2006. He is currently working in wireless solution division
of British Telecom. His research focuses on performance modelling and analysis as well as discrete-event simulation of wireless
communication protocols and wireless communication networks. He has published over 20 papers in the areas of wireless communications.
Anthony C. Boucouvalas has worked at GEC Hirst Research Centre, and became Group Leader and Divisional Chief Scientist until 1987, when he joined
Hewlett Packard (HP) Laboratories as Project Manager. He joined Bournemouth University in 1994 and became a Professor in Multimedia
Communications in 1996, and in 1999 became Director of the Microelectronics and Multimedia Research Centre. His current research
interests span the fields of wireless communications, optical fibre communications and components, multimedia communications,
and human-computer interfaces, where he has published over 200 papers. He has contributed to the formation of IrDA as an industry
standard and he is now a Member of the IrDA Architectures Council. He is a Fellow of Fellow of the Royal Society for the encouragement
of Arts, Manufacturers and Commerce, (FRSA) and a Fellow of IEE, (FIEE). In 2002 he became a Fellow of the Institute of Electrical
and Electronic Engineers (FIEEE), for contributions to optical fibre components and optical wireless communications. He is
an Editor of numerous Journals and in the Organising committee of many conferences. 相似文献
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文中从接入点结合Bluetooth TD-SCDMA手机出发,设计了一种无线局域网应用方案.从功能上讲相当于通过Bluetooth建立无线微微网,并以TD-SCDMA手机为主机平台建立,充分利用了TD-SCDMA网络的高传输速率和高覆盖率,实现微微网内所有从设备都能通过TD-SCDMA手机实现高速无线上网.首先,文中论述了TD-SCDMA手机和Bluetooth技术,然后在这基础上提出了应用方案.最后,阐述了方案的关键技术. 相似文献
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基于蓝牙的心肺音采集系统 总被引:1,自引:0,他引:1
心脏疾病目前已经成为致死率第一的疾病。学者们正在致力于研究各种治疗方式,以从心脏病手中挽救人们的生命。而目前我国的心血管发病率在逐年增加,心血管课题也成为一个重要课题,心血管疾病也越来越受到人们的重视。本文研究了心肺音采集系统的适配电路,阐述了可分离心、肺音的多功能无线可视化电子听诊器的应用前景。针对可分离心、肺音的多功能无线可视化电子听诊器工作原理确定了适配电路的选择方案。详细介绍了各部分电路的功能,构成低功耗、低成本的硬件平台,实现基于蓝牙的心肺音采集系统。 相似文献