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2015 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)最新文献

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Wireless capacitive pressure sensor with directional RF chip antenna for high temperature environments 带有定向射频芯片天线的无线电容式压力传感器,适用于高温环境
M. Scardelletti, J. Jordan, G. Ponchak, C. Zorman
This paper presents the design, fabrication and characterization of a wireless capacitive pressure sensor with directional RF chip antenna that is envisioned for the health monitoring of aircraft engines operating in harsh environments. The sensing system is characterized from room temperature (25°C) to 300°C for a pressure range from 0 to 100 psi. The wireless pressure system consists of a Clapp-type oscillator design with a capacitive MEMS pressure sensor located in the LC-tank circuit of the oscillator. Therefore, as the pressure of the aircraft engine changes, so does the output resonant frequency of the sensing system. A chip antenna is integrated to transmit the system output to a receive antenna 10 m away. The design frequency of the wireless pressure sensor is 127 MHz and a 2% increase in resonant frequency over the temperature range of 25 to 300 °C from 0 to 100 psi is observed. The phase noise is less than -30 dBc/Hz at the 1 kHz offset and decreases to less than -80 dBc/Hz at 10 kHz over the entire temperature range. The RF radiation patterns for two cuts of the wireless system have been measured and show that the system is highly directional and the MEMS pressure sensor is extremely linear from 0 to 100 psi.
本文介绍了一种具有定向射频芯片天线的无线电容压力传感器的设计、制造和特性,该传感器预计将用于恶劣环境下运行的飞机发动机的健康监测。传感系统的特点是从室温(25°C)到300°C的压力范围从0到100 psi。无线压力系统由clapp型振荡器设计组成,电容式MEMS压力传感器位于振荡器的LC-tank电路中。因此,随着飞机发动机压力的变化,传感系统的输出谐振频率也随之变化。集成了一个芯片天线,将系统输出传输到10米外的接收天线。无线压力传感器的设计频率为127 MHz,从0到100 psi的温度范围为25至300°C,谐振频率增加2%。在整个温度范围内,相位噪声在1khz偏置时小于- 30dbc /Hz,在10khz偏置时小于- 80dbc /Hz。测量了无线系统的两个切口的射频辐射模式,表明该系统具有高度定向性,MEMS压力传感器在0到100 psi范围内具有极高的线性。
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引用次数: 8
Adaptive wireless sensor networks for Aircraft 飞机自适应无线传感器网络
P. Minet, G. Chalhoub, E. Livolant, M. Misson, B. Rmili, Jean-Francois Perelgritz
In this paper, we unify the requirements of noncritical and health monitoring applications in Aircraft and Launchers. We present different challenges faced by wireless sensor networks to meet these requirements. We also propose a solution that provides an adaptive multichannel collision-free protocol for data gathering.
在本文中,我们统一了非关键和健康监测在飞机和发射装置中的应用需求。我们提出了无线传感器网络为满足这些要求所面临的不同挑战。我们还提出了一个解决方案,为数据收集提供了一个自适应的多通道无冲突协议。
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引用次数: 4
Wireless leak detection using airborne ultrasonics and a fast-Bayesian tree search algorithm with technology demonstration on the ISS 利用机载超声波和快速贝叶斯树搜索算法进行无线泄漏检测,并在国际空间站上进行技术演示
C. Clark, Lonnie Labonte, Joel Castro, A. Abedi, V. Caccese
This paper presents a wireless leak detection and localization system, based on airborne ultrasonic acoustics and a fast-Bayesian inference technique. Leaks caused by micrometeoroid and orbital debris are major concerns for mission safety on the ISS and other pressurized space structures. A sensor system was designed and constructed to observe these ultrasonic signals and localize the leak. A novel algorithm combining angle of arrival, Bayesian inference, and tree-search is presented to calculate the leak location with any desired accuracy. Prototype of the leak detector will be demonstrated on the ISS in the 2016/2017 time frame, collecting valuable ultrasonics data in microgravity environments. Leak location calculations, system design, and preliminary results are presented in this paper.
提出了一种基于机载超声声学和快速贝叶斯推理技术的无线泄漏检测与定位系统。微流星体和轨道碎片造成的泄漏是国际空间站和其他加压空间结构任务安全的主要问题。设计并构建了一个传感器系统来观测这些超声波信号并定位泄漏。提出了一种结合到达角、贝叶斯推理和树搜索的新算法,可以在任意精度下计算泄漏位置。泄漏探测器的原型将于2016/2017年在国际空间站上进行演示,在微重力环境下收集有价值的超声波数据。本文介绍了泄漏位置计算、系统设计和初步结果。
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引用次数: 7
DTN-O-Tron: A system for the user-guided semi-autonomous generation and distribution of CGR contact plans DTN-O-Tron:用户引导的半自主生成和分发CGR接触计划的系统
Jeremy Pierce-Mayer, Osvaldo Peinado
This paper presents an end-to-end solution for the management of ION DTN nodes. This system allows the user to modify the contact plan for remote ION nodes, as well as handle reports which have been received from those nodes, with all communication between the manager and remote nodes performed over DTN. We implement an open-source reference solution for many of the issues faced in the interplanetary DTN network management, including safe typing, data archival, and end-user interaction.
本文提出了一种对ION DTN节点管理的端到端解决方案。该系统允许用户修改远程ION节点的联系计划,以及处理从这些节点收到的报告,管理人员和远程节点之间的所有通信都通过DTN执行。对于星际DTN网络管理中面临的许多问题,包括安全输入、数据存档和最终用户交互,我们实现了一个开源参考解决方案。
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引用次数: 4
5.8 GHz energy harvesting of space based solar power using inkjet printed circuits on a transparent substrate 利用透明基板上的喷墨印刷电路收集太空太阳能的5.8 GHz能量
F. Amato, Chris M. Beaulieu, Anteneh T. Haile, Jingyuan Liang, Kevin M. Mairena, Hiba Murali, George O. Udeochu, Ikenna C. Uzoije, Philip J. Wolfe, G. Durgin
Space-based solar power satellites can be used to gather solar energy in space and beam it on Earth through microwaves. Developing inexpensive ground stations to harvest microwave energy and to convert it into usable power without affecting the use of land for agriculture will make this technology more affordable and non intrusive. To this end, we present a working design for transparent fabricated, 5.8 GHz rectennas using a modified off-the-shelf desktop ink-jet printer. Preliminary low power tests show the ability of the prototypes to convert microwaves into sufficient DC power to turn on an LED; moreover, the verified substrate transparency to ultraviolet radiations suggests the possibility of deploying ground stations above land usable for agriculture.
天基太阳能卫星可用于在太空中收集太阳能,并通过微波将其发射到地球上。开发廉价的地面站来收集微波能量,并在不影响农业用地的情况下将其转化为可用的电力,这将使这项技术更经济实惠,而且不具有侵入性。为此,我们提出了一种使用改进的现成台式喷墨打印机的透明制造5.8 GHz天线的工作设计。初步的低功耗测试表明,原型机能够将微波转化为足够的直流电来打开LED;此外,经核实的基材对紫外线辐射的透明度表明,在可用于农业的土地上部署地面站的可能性。
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引用次数: 3
A wireless technology assessment for reliable communication in aircraft 飞机可靠通信无线技术评估
Murat Gursu, Mikhail Vilgelm, W. Kellerer, E. Fazli
Reliability certification of the aircraft communication infrastructure is a challenging task with any kind of wireless communication technology. In this paper a reliability framework is provided that is used to test wireless technologies against flight certification requirements. The required communication error rate of each technology is calculated against an exemplary application in order to form an understanding of the relationship between the system parameters. Results provide a guideline about the feasibility of candidate technologies for aircraft communication systems.
对于任何一种无线通信技术,飞机通信基础设施的可靠性认证都是一项具有挑战性的任务。本文提供了一个可靠性框架,用于根据飞行认证要求测试无线技术。针对示例性应用计算每种技术所需的通信错误率,以便形成对系统参数之间关系的理解。研究结果为飞机通信系统候选技术的可行性提供了指导。
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引用次数: 13
Lifetime and power consumption analysis of sensor networks 传感器网络寿命和功耗分析
G. Alirezaei, Omid Taghizadeh, R. Mathar
Power consumption and lifetime are essential features of sensor networks. On the one hand, the power consumption should be as low as possible to enable an energy-aware system. On the other hand, the lifetime should be as long as possible to ensure for a comprehensive coverage. Especially, for application of sensor networks in extreme environments, it is also necessary to achieve high reliability over the whole lifetime. However, these features are contrary and they must be optimized simultaneously to achieve an optimal performance. In this paper, we thus study the minimization of the overall power consumption for any given lifetime and any required signal quality. First, a theoretical and challenging approach is proposed, which shows the feasible boundaries for both power reduction and achievability of a certain lifetime. Then, a practical approach is shown, which is nearly optimal and fits sufficiently together with the theoretical approach. Finally, selected results are visualized to show the performance of the new methods and to discuss the power consumption of the entire sensor network.
功耗和寿命是传感器网络的基本特征。一方面,功耗应该尽可能低,以实现能源感知系统。另一方面,寿命应尽可能长,以确保全面覆盖。特别是传感器网络在极端环境下的应用,还需要在整个生命周期内实现高可靠性。然而,这些特征是相反的,必须同时进行优化才能达到最佳性能。在本文中,我们因此研究在任何给定的寿命和任何所需的信号质量下,总功耗的最小化。首先,提出了一种理论性和挑战性的方法,给出了降低功率和实现一定寿命的可行边界。在此基础上,给出了一种接近最优且与理论方法充分拟合的实用方法。最后,将选定的结果可视化,以显示新方法的性能,并讨论整个传感器网络的功耗。
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引用次数: 11
Towards ground station contact discovery in ring road networks 环城路网地面站接点发现研究
Marius Feldmann, F. Walter
Delay-tolerant Networking protocols render a huge variety of novel communication scenarios possible. One of them is the so called Ring Road approach, a world-wide message-ferry network built upon Low-Earth Orbit (LEO) satellites used to transfer data between different ground stations. By this approach a world-wide communication network may be deployed at very low cost which allows for ad-hoc integration of ground stations into the overall network. Thus, it is possible to route data between isolated regions of the world and the Internet without explicit configuration effort. Essential for bringing this concept to realization is a neighbor discovery protocol enabling LEO satellites to discover new ground stations. The aim of this paper is to discuss the DTN IP Neighbor Discovery (IPND) protocol as a basis for a dedicated discovery approach. The resulting adapted version of IPND has been integrated into an existing DTN protocol implementation intended to be used on low-cost LEO satellites such as CubeSats. A technical realization has stood the test of practice and, thus, confirmed the applicability of the protocol for dynamic ground station discovery in a Ring Road network.
容忍延迟的网络协议使各种各样的新型通信场景成为可能。其中之一是所谓的“环路”方法,这是一个建立在近地轨道(LEO)卫星上的全球信息轮渡网络,用于在不同的地面站之间传输数据。通过这种方法,可以以极低的成本部署一个世界范围的通信网,从而使地面站能够特别地并入整个网络。因此,可以在世界上孤立的区域和Internet之间路由数据,而无需进行显式配置。实现这一概念的关键是邻居发现协议,使LEO卫星能够发现新的地面站。本文的目的是讨论DTN IP邻居发现(IPND)协议作为专用发现方法的基础。由此产生的IPND改编版本已集成到现有的DTN协议实施中,旨在用于低成本近地轨道卫星,如立方体卫星。一个技术实现经过了实践的检验,从而证实了该协议在环城网动态地面站发现中的适用性。
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引用次数: 5
A wireless piezoelectric sensor network for distributed structural health monitoring 用于分布式结构健康监测的无线压电传感器网络
Shang Gao, X. Dai, Zheng Liu, G. Tian, S. Yuan
This paper presents the development of a newly designed wireless piezoelectric (PZT) sensor platform for distributed active structure health monitoring (such as aircraft wings and bridges). The developed wireless PZT-sensor network features real-time data acquisition with high sampling rate up to 12.5MSPS (sample per second), distributed lamb-wave data processing and energy saving by reducing the amount of data in wireless transmission. In the proposed wireless PZT network, a set of PZT transducers deployed at the surface of the structure, and a lamb wave is excited and its propagation characteristics within the structure are inspected to identify possible damages. The developed wireless node platform benefits from a digital signal processor (DSP) of TMS320F28335 and an improved IEEE 802.15.4 wireless data transducer RF233 with up to 2Mbps data rate. Each node supports up to 8 PZT transducers, one of which may work as the actuator generating the Lamb wave at an arbitrary frequency, while the responding vibrations at other PZT sensors are sensed simultaneously. In addition to hardware, embedded signal processing and distributed data processing algorithm are designed as the intelligent `brain' of the proposed wireless monitoring network to extract features of the PZT signals, so that the data transmitted over the wireless link can be reduced significantly.
本文介绍了一种用于分布式主动结构健康监测(如飞机机翼和桥梁)的新型无线压电(PZT)传感器平台。所开发的无线pzt传感器网络具有实时数据采集,采样率高达12.5MSPS(采样率每秒),分布式羊波数据处理以及通过减少无线传输中的数据量来节省能源的特点。在所提出的无线PZT网络中,在结构表面部署一组PZT换能器,激发lamb波并检测其在结构内的传播特性以识别可能的损伤。所开发的无线节点平台得益于TMS320F28335数字信号处理器(DSP)和改进的IEEE 802.15.4无线数据传感器RF233,数据速率高达2Mbps。每个节点最多支持8个PZT传感器,其中一个可以作为致动器产生任意频率的Lamb波,而其他PZT传感器的响应振动同时被感知。除硬件外,本文还设计了嵌入式信号处理和分布式数据处理算法作为无线监控网络的智能“大脑”,提取PZT信号的特征,从而显著减少无线链路上传输的数据量。
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引用次数: 2
Bit-Error-Rate measurement of infrared physical channel using reflection via Multi Layer Insulation inside in ARIANE 5 Vehicle Equipment Bay for wireless sensor network communication 阿丽亚娜5型车载设备舱内多层隔热反射红外物理通道的误码率测量
Hendra Kesuma, Awais Ahmed, S. Paul, J. Sebald
In this work we investigate the Bit-Error-Rate (BER) of the Infrared (Ir) Communication inside the Vehicle Equipment Bay (VEB) of the ARIANE 5. Measurements were performed to find the impact of the reflection of the infrared signal via Multi Layer Insulation (MLI) on the infrared wireless sensor network (Ir WSN) communication in the VEB. The main focus is to find the relationship between the BER and the transmitting/receiving angle depending on variation of the Ir transmitter power. A further experiment was done by varying the transmission current with a constant angle for BER estimation without adding extra special signals (e.g. Additive white Gaussian noise (AWGN)) to the transmitter. Ambient white light from LEDs and 50 Hz fluorescent AC light was superimposed in the measurement to introduce additional noise for the infrared receiver into the physical channel.
在这项工作中,我们研究了阿丽亚娜5运载设备舱(VEB)内红外(Ir)通信的误码率(BER)。研究了红外信号经多层绝缘(Multi Layer Insulation, MLI)反射对红外无线传感器网络(Ir WSN)通信的影响。主要的重点是找出误码率和发射/接收角随红外发射功率变化的关系。在不向发射机中加入额外的特殊信号(如加性高斯白噪声(AWGN))的情况下,以恒定角度改变传输电流进行误码率估计。在测量中,来自led的环境白光和50 Hz的荧光交流光叠加在一起,为红外接收器引入额外的噪声到物理通道中。
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引用次数: 5
期刊
2015 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE)
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