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2015 IEEE Sensors Applications Symposium (SAS)最新文献

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Low cost optronic obstacle detection sensor for unmanned surface vehicles 用于无人水面车辆的低成本光电障碍物探测传感器
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133652
A. Sorbara, E. Zereik, M. Bibuli, G. Bruzzone, M. Caccia
The need for technological transfer of robotic technology, already available and well established at research level, is now a major issue for the robotic community in order to address applications within civilian scenarios. In particular, concerning the marine and maritime context, safe and highly reliable navigation guidance and control (NGC) systems are strongly required to perform autonomous and critical operations with unmanned robots. To this aim, a very sensitive issue is represented by collision avoidance systems that have to be smart enough to reactively detect unexpected obstacles and perform the necessary avoidance manoeuvres to safely prevent collisions. The present paper proposes a highly innovative obstacle detection sensor, combining both passive and active optical devices and based on a new concept of optronic system. It is specifically conceived for collision avoidance tasks in marine environments, designed to be easily mounted on small-medium sized USVs (Unmanned Surface Vehicles). Its innovation consists in the interaction between the different integrated sensors, that are in fact totally decoupled. Preliminary experimental data collected by the sensor are reported, together with some simulations that highlight the ability of the system to detect and correctly avoid both still obstacles and mobile traversing obstacles.
机器人技术的技术转让已经在研究层面上得到充分利用,现在是机器人社区的一个主要问题,以便在民用场景中解决应用问题。特别是在海上和海事环境中,迫切需要安全、高度可靠的导航制导和控制(NGC)系统,以实现无人机器人的自主和关键操作。为了实现这一目标,一个非常敏感的问题是避碰系统,它必须足够智能,能够反应性地检测到意外的障碍物,并执行必要的避碰操作,以安全防止碰撞。本文基于光电系统的新概念,提出了一种高度创新的无源和有源光学器件相结合的障碍物检测传感器。它是专门为海洋环境中的避碰任务而设计的,可轻松安装在中小型usv(无人水面车辆)上。它的创新之处在于不同的集成传感器之间的交互,这些传感器实际上是完全解耦的。报告了传感器收集的初步实验数据,以及一些模拟,突出了系统检测和正确避开静止障碍物和移动穿越障碍物的能力。
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引用次数: 10
Nearfield sensing and actuation for multispectral imaging systems 多光谱成像系统的近场传感和驱动
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133573
M. Rosenberger, R. Futterer, Fred Ziegner, M. Schellhorn
The sharpness of edge transition is one of the major requirements in optical sensing especially in the field of image processing. Therefore a lot of algorithms were assessed in the field of digital photography. In the field of industrial image processing especially multispectral imaging different focus positions are needed to get an optimal focus position for every sampling channel. Therefore a control loop was developed which uses an inductive sensor to measure the actual position of an image sensor. With this information a voice coil were activated to actuate the sensor into the optimal position. For a correct operation a resolution of less than fifty microns have to be reached. The paper presents the construction as well as the electronic and sensor actor design. First evaluations demonstrating a proof of concept and will also discussed in the paper.
边缘过渡的清晰度是光学传感特别是图像处理领域的主要要求之一。因此,人们对数字摄影领域的许多算法进行了评估。在工业图像处理领域,特别是多光谱成像中,需要对每个采样通道设置不同的聚焦位置,以获得最优的聚焦位置。因此,开发了一种控制回路,使用电感式传感器来测量图像传感器的实际位置。有了这些信息,一个音圈被激活,以驱动传感器进入最佳位置。为了正确操作,必须达到小于50微米的分辨率。本文介绍了该系统的结构、电子元件和传感器的设计。第一次评估证明了概念的证明,并将在论文中讨论。
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引用次数: 4
Self-powered wireless sensor nodes for monitoring radioactivity in contaminated areas using unmanned aerial vehicles 使用无人驾驶飞行器监测污染地区放射性的自供电无线传感器节点
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133627
Andres Gomez, M. F. Lagadec, M. Magno, L. Benini
A self-sustainable wireless sensor node for the monitoring radiation in contaminated and poorly accessible areas is presented. The node is designed to work in collaboration with an unmanned aerial vehicle used for two essential mission steps: air-deploying the wireless sensor nodes at suitable locations and acquiring data logs via ultra-low power, short-range radio communication in fly-by mode, after a wake-up routine. The system allows for the use of off-the-shelf components for defining mission, drop-zone and trajectory, for compressing data, and for communication management. The node is equipped with a low-power nuclear radiation sensor and it was designed and implemented with self-sustainability in mind as it will be deployed in hazardous, inaccessible areas. To this end, the proposed node uses a combination of complementary techniques: a low-power microcontroller with non-volatile memory, energy harvesting, adaptive power management and duty cycling, and a nano-watt wake-up radio. Experimental results show the power consumption efficiency of the solution, which achieves 70uW in sleep mode and 500uW in active mode. Finally, simulations based on actual field measurements confirm the solution's self-sustainability and illustrate the impact of different sampling rates and that of the wake-up radio.
提出了一种用于污染和交通不便地区辐射监测的自持续无线传感器节点。该节点被设计为与无人机协同工作,用于两个基本任务步骤:在适当的位置空中部署无线传感器节点,并在唤醒程序后通过超低功耗、短程无线电通信以飞行模式获取数据日志。该系统允许使用现成的组件来定义任务、投放区域和轨迹,用于压缩数据和通信管理。该节点配备了一个低功率核辐射传感器,它的设计和实施考虑到了自我可持续性,因为它将部署在危险的、难以进入的地区。为此,提出的节点使用了互补技术的组合:具有非易失性存储器,能量收集,自适应电源管理和占空比的低功耗微控制器,以及纳米瓦唤醒无线电。实验结果表明,该方案的功耗效率在休眠模式下达到70uW,在活动模式下达到500uW。最后,基于实际现场测量的仿真验证了该方案的可持续性,并说明了不同采样率和唤醒无线电的影响。
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引用次数: 13
Measurement of dissolved hydrogen concentration with clark electrode 克拉克电极测定溶解氢浓度
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133656
D. Mislov, M. Cifrek, I. Krois, H. Džapo
Clark electrode is a well-known sensor for measuring concentration of dissolved oxygen in a water solution. This type of electrochemical sensor has an advantage of enabling detection of very low oxygen concentration. Although Clark electrode is typically used for measurement of dissolved oxygen, our research showed that the same electrodes can be successfully applied for measurement of other dissolved gases. We investigated a possibility of applying the same principle to dissolved hydrogen concentration measurement, and also the possibility of simultaneous measurement of both dissolved oxygen and hydrogen concentrations in the same water solution. We adapted Clark electrode sensor to measure dissolved hydrogen by choosing the appropriate polarization voltage level. We studied the influences on dissolved hydrogen measurement, such as choice of polarization voltage, temperature, salinity, and solution pH. We investigated the polarization voltage influence on sensor sensitivity and observed hysteresis in sensitivity that occurs with cyclic increase and decrease of polarization voltage. We proposed and described measurement setup that was used for experimental verification of proposed measurement method and sensor characteristics. The measurement results of sensor characteristics are presented, regarding the influences of polarization voltage, temperature dependence, salinity (fresh water and 380/00 NaCl solution) and pH value (6, 7, 8).
克拉克电极是一种著名的用于测量水溶液中溶解氧浓度的传感器。这种类型的电化学传感器的优点是能够检测非常低的氧浓度。虽然克拉克电极通常用于测量溶解氧,但我们的研究表明,相同的电极可以成功地应用于测量其他溶解气体。我们研究了将相同原理应用于溶解氢浓度测量的可能性,以及同时测量同一水溶液中溶解氧和氢浓度的可能性。通过选择合适的极化电压电平,将Clark电极传感器应用于溶解氢的测量。研究了极化电压的选择、温度、盐度、溶液ph等对溶解氢测量的影响,考察了极化电压对传感器灵敏度的影响,并观察了极化电压随循环升高和降低而出现的灵敏度滞后现象。我们提出并描述了用于实验验证所提出的测量方法和传感器特性的测量装置。给出了极化电压、温度依赖性、盐度(淡水和380/00 NaCl溶液)和pH值(6,7,8)对传感器特性的影响。
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引用次数: 5
Synchronisation using wireless trigger-broadcast for impedance spectroscopy of battery cells 使用无线触发广播同步电池的阻抗谱
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133608
Valentin Roscher, Matthias Schneider, P. Durdaut, N. Sassano, Sergej Pereguda, Eike Mense, K. Riemschneider
In electric vehicles, batteries with many cells are used to supply the high voltages needed for the power train. The battery is controlled by a battery management system (BMS) which needs measurement data from each individual cell. Up to now, wired solutions with specialized measurement controllers for battery modules are in use. Some of these communicate over data bus structures. Our group proposes as an alternative solution the use of wireless communication in the near RF field area. The basics of this solutions have already been published [1]. In this article we present more advanced functionality for the wireless sensors approach. A functional module has been developed for impedance spectroscopy of each individual cell in the battery stack during automotive operation. Electrochemical impedance spectroscopy is a powerful method to determine the battery state beyond common and simple models. This technique needs precise and synchronized measurements of the common current and the voltages of the individual cells. A communication and control protocol has been implemented in hard- and software, including a trigger-broadcast operating mode. This solution has to fulfill the time precision requirements of the distributed measurements in the range of a few μs. Therefore, proprietary protocol solutions have been developed. Additional modules in the sensor system allow other functions such as cell balancing and an energy saving wake-up function for the sensor modules. These sensor modules are designed as tailored hardware for integration inside the individual battery cells.
在电动汽车中,有许多单元的电池被用来提供动力系统所需的高电压。电池由电池管理系统(BMS)控制,该系统需要来自每个单独电池的测量数据。到目前为止,使用的是带有专门测量控制器的电池模块有线解决方案。其中一些通过数据总线结构进行通信。我们的小组提出在近射频场区域使用无线通信作为替代解决方案。该解决方案的基础已经发表[1]。在本文中,我们将介绍无线传感器方法的更高级功能。已经开发了一个功能模块,用于汽车运行过程中电池组中每个单独电池的阻抗谱。电化学阻抗谱是一种超越普通和简单模型的有效方法。这项技术需要对单个电池的共同电流和电压进行精确和同步的测量。在硬件和软件上实现了通信和控制协议,包括触发广播操作模式。该方案能够满足分布式测量在几μs范围内的时间精度要求。因此,开发了专有协议解决方案。传感器系统中的附加模块允许传感器模块的其他功能,如细胞平衡和节能唤醒功能。这些传感器模块被设计为集成在单个电池单元内的定制硬件。
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引用次数: 20
Unmanned aerial gas leakage localization and mapping using microdrones 利用微型无人机进行无人机气体泄漏定位与制图
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133629
Vanesa Gallego, M. Rossi, D. Brunelli
We present an autonomous-mobile gas detection system to assess the measurement of specific gas concentrations in a wide range of outdoor applications. This is especially of interest in those harsh environments where it is impractical or uneconomical to install a fixed array of gas sensors. The system is able to work in potentially hazardous emissions areas - toxic gas leakages - in completely secure working conditions for the operators. Used as payload on a Unmanned Aerial Vehicle (UAV), it can provide gas measurements with adaptive and high resolution sampling rates in accordance to gas concentration and carrier speed. Each measurement is associated with the location provided by the embedded GPS module. Remarkable features are the small size, the low power consumption and costs, compared to traditional systems. Finally, we presents a novel approach to optimize the speed of the vehicle and the system power consumption based on gas sampling frequency, which allows lifetime maximization and leakage detection reliability.
我们提出了一个自主移动气体检测系统,以评估在广泛的户外应用特定气体浓度的测量。在恶劣的环境中,安装固定的气体传感器阵列是不切实际或不经济的,这一点尤为重要。该系统能够在潜在的危险排放区域(有毒气体泄漏)中工作,为操作人员提供完全安全的工作条件。作为无人机(UAV)的有效载荷,它可以根据气体浓度和载体速度提供具有自适应和高分辨率采样率的气体测量。每次测量都与嵌入式GPS模块提供的位置相关联。与传统系统相比,其显著特点是体积小,功耗低,成本低。最后,我们提出了一种基于气体采样频率优化车辆速度和系统功耗的新方法,从而实现寿命最大化和泄漏检测可靠性。
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引用次数: 27
Textile antennas for on-body sensors 用于人体传感器的纺织天线
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133645
B. Ivsic, D. Bonefačić, J. Bartolić
Guidelines for modification of conventional antenna design to yield efficient operation in body-centric environment are presented. The interaction of the antenna and human body is investigated by modeling the wave propagation around torso. Two types of wearable antennas based on modifying quarter-wavelength shorted patch are designed and manufactured, while integration of the antennas and RFID sensors into the everyday clothes is addressed.
提出了改进传统天线设计以使其在以体为中心的环境中有效运行的准则。通过模拟人体周围的波传播,研究了天线与人体的相互作用。设计和制造了两种基于修改四分之一波长短贴片的可穿戴天线,并解决了将天线和RFID传感器集成到日常服装中的问题。
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引用次数: 6
Prediction of the asymptotical magnetic polarization tensors for cylindrical samples using the boundary element method 用边界元法预测圆柱形样品的渐近磁极化张量
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133631
Mingyang Lu, Qian Zhao, Peipei Hu, W. Yin, A. Peyton
The magnetic polarization tensor is a frequency-dependent, rotation-invariant and object-specific property of a metallic object. This paper presents an approach to compute the magnetic polarization tensor of a metallic object based on the Boundary Element Method (BEM), which treats the object as a perfect electrical conductor (PEC) and therefore is able to predict the limiting cases where very high frequency and/or high conductivity is assumed. A uniform magnetic field is applied to an object and the scattered field at a certain distance is obtained in the simulations. The magnetic tensor can then be deduced from the scattered field. The simulated results agree well with an analytical solution for spheres and with measured results for a number of cylinders for limiting cases.
磁极化张量是金属物体的频率相关、旋转不变性和特定于物体的特性。本文提出了一种基于边界元法(BEM)计算金属物体的磁极化张量的方法,该方法将物体视为完美电导体(PEC),因此能够预测假设高频和/或高电导率的极限情况。在模拟中,对物体施加均匀磁场,得到一定距离处的散射场。然后可以从散射场推导出磁张量。在极限情况下,模拟结果与球体的解析解和许多圆柱体的实测结果吻合较好。
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引用次数: 26
Capacitance-based wireless sensor mote for snail pest detection 基于电容的蜗牛害虫检测无线传感器
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133586
Daniel García-Lesta, E. Ferro, V. Brea, P. López, D. Cabello, J. Iglesias, J. Castillejo
Pests due to terrestrial mollusks cause serious damage, both economic and ecological, in various types of agricultural plantations. In this paper we develop a low cost capacitive sensor that wirelessly communicates with the base, to monitor the activity of land snails. Once implemented physically, it has been tested in a controlled miniplot with favorable results.
陆生软体动物对各种类型的农业人工林造成严重的经济和生态破坏。在本文中,我们开发了一种低成本的电容式传感器,可以与基地无线通信,以监测陆地蜗牛的活动。一旦在物理上实施,它已经在一个受控的小地块上进行了测试,并取得了良好的结果。
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引用次数: 3
Combined actuator sensor unit for interaction with honeybees 用于与蜜蜂互动的组合致动器传感器单元
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133604
Karlo Griparic, Tomislav Haus, D. Miklić, S. Bogdan
Interacting with a specific animal society by integrating autonomous robot/s into the society, has become a powerful method to influence the behaviour of animals and investigate collective behaviour of both, animal and robot societies. In order to interact with animals, artificial unit/s should be well integrated into their society. In the European project ASSISIbf, a network of static autonomous robots called CASUs (Combined Actuator Sensor Units) for interaction with young honeybees has been designed. In the proposed approach CASUs can affect honeybees using three types of physical stimuli: heat, vibration and light. To provide feedback signals necessary for controlling CASU interaction with honeybees, accurate and reliable measurements of the stimuli are necessary. This paper describes the mechanical and electronic design of CASUs, capable of emitting controllable heat, vibration and light stimulations. Each CASU is equipped with temperature sensors, 3-axis accelerometers, infrared proximity sensors and microcontroller for data processing. Preliminary experimental results with honeybee groups are presented.
通过将自主机器人整合到社会中,与特定的动物社会进行互动,已经成为影响动物行为和调查动物和机器人社会集体行为的有力方法。为了与动物互动,人工单位应该很好地融入它们的社会。在欧洲ASSISIbf项目中,设计了一个名为CASUs(联合致动器传感器单元)的静态自主机器人网络,用于与年轻蜜蜂互动。在提出的方法中,casu可以通过三种物理刺激来影响蜜蜂:热、振动和光。为了提供控制CASU与蜜蜂相互作用所需的反馈信号,需要对刺激进行准确可靠的测量。本文介绍了能够发出可控热、振动和光刺激的casu的机械和电子设计。每个CASU都配备了温度传感器,3轴加速度计,红外接近传感器和用于数据处理的微控制器。给出了蜜蜂群的初步实验结果。
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引用次数: 13
期刊
2015 IEEE Sensors Applications Symposium (SAS)
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