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2015 IEEE Sensors Applications Symposium (SAS)最新文献

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A parallel plate dielectric resonator as a wireless passive strain sensor 一种用作无线无源应变传感器的平行板介质谐振器
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133576
T. Aftab, A. Yousaf, J. Hoppe, Sebastian Stoecklin, T. Ostertag, L. Reindl
This paper presents a wireless passive strain sensing concept that functions by detuning a dielectric resonator. It is shown how a high Q resonator functions as a wireless passive sensor when correctly matched with an antenna. Finite element and analytical models are compared with experimental data and the sensor cross sensitivity with respect to temperature and humidity are also explored. The sensitivity of the resonance frequency to the strain, temperature and humidity is measured to be 51.6 ppm/μm, 10.09 ppm/K and -0.65 ppm/% respectively.
本文提出了一种通过对介电谐振器进行失谐来实现无线无源应变传感的概念。它显示了当正确地与天线匹配时,高Q谐振器如何作为无线无源传感器。将有限元模型和解析模型与实验数据进行了比较,并探讨了传感器对温度和湿度的交叉灵敏度。谐振频率对应变、温度和湿度的灵敏度分别为51.6 ppm/μm、10.09 ppm/K和-0.65 ppm/%。
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引用次数: 10
A virtual square partition for connected coverage assurance in wireless sensor networks 一种用于无线传感器网络连通覆盖保障的虚拟方形分区
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133620
Attapol Adulyasas, Zhili Sun, Ning Wang
Wireless sensor networks usually have a massive number of randomly deployed sensor nodes that perform sensing and transmitting data to a base station. This can be a cause of sensor redundancy and data duplication. Sensor scheduling is a solution to reducing the enormous amount of the data load by selecting certain potential sensors to perform the tasks. Meanwhile, the quality of connectivity and coverage is also assured. This paper proposes a sensor scheduling method, called 4-Sqr, which uses a virtual square partition that is composed of consecutive square cells. Based on coordinates upon a monitored area, sensors learn their position on the virtual partition themselves; these are divided into groups of target areas, depending on the sensors' geographical locations. They are then ready for the node selection phase. In order to distribute energy consumption equally, the sensors with the highest residual energy within the same group usually have more chance of being active than the others. Compared to other existing methods, the proposed method is outstanding in many aspects such as the quality of connected coverage, the chance of being selected and the network's lifetime.
无线传感器网络通常有大量随机部署的传感器节点,这些节点执行传感和向基站传输数据。这可能是传感器冗余和数据重复的原因。传感器调度是通过选择某些潜在的传感器来执行任务来减少大量数据负载的一种解决方案。同时,连通性和覆盖质量也得到了保证。本文提出了一种传感器调度方法,称为4-Sqr,该方法使用由连续方形单元组成的虚拟方形分区。基于监控区域的坐标,传感器自己学习它们在虚拟分区上的位置;根据传感器的地理位置,这些区域被分成目标区域组。然后,它们就可以进入节点选择阶段了。为了平均分配能量消耗,同一组中剩余能量最高的传感器通常比其他传感器有更大的活跃机会。与现有的方法相比,该方法在连接覆盖质量、被选择的机会和网络寿命等方面都有突出的优点。
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引用次数: 0
Novel mechanical transducers for switched capacitor circuits 开关电容电路用新型机械换能器
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133655
C. Trigona, A. Noto, B. Andò, S. Baglio
In this paper a novel Switched Capacitor (SC) approach based on mechanical switches driven by vibrations has been developed. The proposed transduction mechanism has been compared with a common class of discrete-time SC-conditioning circuits based on electronic switches (BJT, MOS, pass-transistors). Authors already proposed two magnetically-coupled cantilevers having each one a bistable behavior in order to implement SC topologies. In this paper a novel approach based on multiple coupled cantilevers having stoppers located only on the top of the beams has been presented. This configuration improves previous works in terms of noise and nonlinear effects attenuation, furthermore it represents a suitable solution to perform micro and nano-scale devices. Analytical models are presented here together with experimental characterization results on laboratory prototype.
本文提出了一种基于振动驱动的机械开关的开关电容(SC)方法。所提出的转导机制已与一类基于电子开关(BJT, MOS,通路晶体管)的常见离散时间sc调节电路进行了比较。为了实现SC拓扑结构,作者已经提出了两种具有双稳态行为的磁耦合悬臂梁。本文提出了一种基于多个耦合悬臂梁的新方法,该悬臂梁的止动器仅位于梁的顶部。该结构在噪声和非线性效应衰减方面改进了先前的工作,并且代表了执行微纳米级器件的合适解决方案。本文给出了分析模型,并给出了实验室样机的实验表征结果。
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引用次数: 1
Fixed-pattern noise suppression in low-sensing environment of Time-of-Flight devices 飞行时间器件低感知环境下的固定模式噪声抑制
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133633
M. Georgiev, R. Bregović, A. Gotchev
In this paper, we emphasize the importance of fixed-pattern noise (FPN) that occurs in Time-of-Flight (ToF) devices that operate in the so-called low-sensing environment. We propose a method for designing FIR filters that can be used for suppressing the FPN. We illustrate by means of two experiments the importance of dealing with the FPN, before conventional denoising algorithms are applied.
在本文中,我们强调了在所谓的低传感环境中运行的飞行时间(ToF)器件中发生的固定模式噪声(FPN)的重要性。我们提出了一种设计FIR滤波器的方法,可以用来抑制FPN。我们通过两个实验说明了在应用常规去噪算法之前处理FPN的重要性。
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引用次数: 3
A first look at vehicle data collection via smartphone sensors 第一次看到通过智能手机传感器收集车辆数据
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133607
Michael Reininger, Seth Miller, Yanyan Zhuang, Justin Cappos
Smartphones serve as a technical interface to the outside world. These devices have embedded, on-board sensors (such as accelerometers, WiFi, and GPSes) that can provide valuable information for investigating users' needs and behavioral patterns. Similarly, computers that are embedded in vehicles are capable of collecting valuable sensor data that can be accessed by smartphones through the use of On-Board Diagnostics (OBD) sensors. This paper describes a prototype of a mobile computing platform that provides access to vehicles' sensors by using smartphones and tablets, without compromising these devices' security. Data such as speed, engine RPM, fuel consumption, GPS locations, etc. are collected from moving vehicles by using a WiFi On-Board Diagnostics (OBD) sensor, and then backhauled to a remote server for both real-time and offline analysis. We describe the design and implementation details of our platform, for which we developed a library for in-vehicle sensor access and created a non-relational database for scalable backend data storage. We propose that our data collection and visualization tools are useful for analyzing driving behaviors; we also discuss future applications, security, and privacy concerns specific to vehicular networks.
智能手机是与外界联系的技术接口。这些设备具有嵌入式机载传感器(如加速度计、WiFi和gps),可以为调查用户需求和行为模式提供有价值的信息。同样,嵌入车辆中的计算机能够收集有价值的传感器数据,这些数据可以通过使用车载诊断(OBD)传感器由智能手机访问。本文描述了一个移动计算平台的原型,该平台可以通过使用智能手机和平板电脑访问车辆的传感器,而不会损害这些设备的安全性。通过使用WiFi车载诊断(OBD)传感器,从行驶中的车辆收集速度、发动机转速、油耗、GPS位置等数据,然后传回远程服务器进行实时和离线分析。我们描述了我们平台的设计和实现细节,为此我们开发了一个用于车载传感器访问的库,并创建了一个用于可扩展后端数据存储的非关系数据库。我们认为,我们的数据收集和可视化工具对分析驾驶行为很有用;我们还讨论了未来的应用,安全和隐私问题,具体到车载网络。
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引用次数: 33
Swimmers in the loop: Sensing moving water masses for an auditory biofeedback system 游泳者在循环:感知移动的水质量为听觉生物反馈系统
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133578
Daniel Cesarini, B. Ungerechts, T. Hermann
Auditory biofeedback systems in the field of sports are increasingly adopted to provide an online guidance to the people performing actions. This paper concentrates on swimming and on producing auditory feedback intended to enhance the perception of the interaction between a swimmer's body and the surrounding water masses while swimming. The information is related to the concept of `feel-for-water', that is a key factor to produce an effective propulsion, through a correct perception of the boundary effects of body and water. The presented system is composed of pressure sensors, plastic tubes ending between the swimmer's hand fingers on the dorsal and palmar side, a microcontroller reading the sensors and sending data to a PC for further processing producing the auditory feedback through interactive sonification. We focus on the system setup and present a simple parameter-mapping sonification design as an example, along with possible extensions of the system and other sonification designs. Finally, we present video and audio examples of the system.
听觉生物反馈系统在体育领域被越来越多地采用,为人们的动作提供在线指导。本文集中于游泳和产生听觉反馈,旨在增强游泳者在游泳时身体与周围水体之间相互作用的感知。这些信息与“水感”的概念有关,这是通过正确感知身体和水的边界效应来产生有效推进力的关键因素。该系统由压力传感器、塑料管组成,塑料管末端位于游泳者的手背和掌侧的手指之间,微控制器读取传感器并将数据发送给PC机进行进一步处理,通过交互式超声产生听觉反馈。我们将重点放在系统设置上,并以简单的参数映射超声设计为例,以及系统和其他超声设计的可能扩展。最后,给出了系统的视频和音频实例。
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引用次数: 5
Sensor-based breakage detection for electric fences 基于传感器的电围栏破损检测
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133589
Eranda Tennakoon, Charith Madusanka, K. Zoysa, C. Keppitiyagama, V. Iyer, Kasun Hewage, T. Voigt
The human-elephant conflict is one of the most severe natural problems in Sri Lanka. There are rich farmlands near the elephant habitats and elephants raid these farms in search of food. This has been the main cause for nearly 70 human deaths and over 200 elephant deaths that have been recorded each year in the recent past. To manage the problem, the government has initiated projects that secure the national wildlife parks with electric fences. However, maintaining the electric fence is a challenge, because of its large perimeter and the lack of available manpower. A particular concern is that of locating faults in electric fences since these typically span a few hundred miles. Currently, park rangers are required to travel on foot to locate the faults, which could take days to complete. In this paper, we propose a novel system architecture that considerably shortens the maintenance time for electric fences, at minimal and hence affordable cost. Our architecture benefits the park rangers of the national wildlife sanctuaries to detect and repair the breakages.
人象冲突是斯里兰卡最严重的自然问题之一。大象栖息地附近有肥沃的农田,大象会袭击这些农场寻找食物。这是近年来每年记录的近70人死亡和200多头大象死亡的主要原因。为了解决这个问题,政府已经启动了在国家野生动物公园设置电围栏的项目。然而,维护电动围栏是一个挑战,因为它的大周长和缺乏可用的人力。一个特别值得关注的问题是在电网中定位故障,因为这些电网通常跨越几百英里。目前,公园管理员需要步行去定位断层,这可能需要几天时间才能完成。在本文中,我们提出了一种新颖的系统架构,以最小的成本大大缩短了电围栏的维护时间。我们的建筑有利于国家野生动物保护区的公园管理员检测和修复破损。
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引用次数: 10
Data-driven low-complexity nitrate loss model utilizing sensor information — Towards collaborative farm management with wireless sensor networks 利用传感器信息的数据驱动低复杂度硝酸盐损失模型——迈向无线传感器网络协同农场管理
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133592
Huma Zia, N. Harris, G. Merrett, M. Rivers
Excessive or poorly timed application of irrigation and fertilizers, coupled with the inherent inefficiency of nutrient uptake by crops result in nutrient fluxes into the water system. The ability to predict nutrient-rich discharges, in real time, can be very valuable to enable reuse mechanisms within farm systems. Wireless Sensor Networks (WSNs) offer an opportunity to monitor environmental systems with unprecedented temporal and spatial resolution. As part of our previous work, we proposed a novel framework (WQMCM) to combine increasingly common local farm-scale sensor networks across a catchment to learn and predict (using predictive models) the impact of catchment events on their downstream environments, allowing dynamic decision. Existing models use complex parameters which are difficult to extract and this, coupled with constraints on network nodes (battery life, computing power etc., availability of sensors) makes it necessary to develop simplified models for deployment within the networks. The paper investigates data-driven model for predicting daily total oxidized nitrate (TON) fluxes by seeking simplification in model parameters and using only a yearlong training data set. Data from a catchment in Ireland is used for training the model. Model simplification is investigated by abstracting details from an existing nitrate loss model. By using M5 decision tree model on the training samples of the proposed parameters, results give R2 as 0.92 and RRMSE as 0.26. The proposed novel model gives better results with fewer samples and simple parameters when compared to the traditional model. This shows promise for enabling real time nutrient control and management within the collaborative networked farm system.
灌溉和施肥过量或不合时宜,加上作物固有的养分吸收效率低下,导致养分流入水系统。实时预测富含营养物质排放的能力对于实现农业系统内的再利用机制非常有价值。无线传感器网络(wsn)提供了以前所未有的时间和空间分辨率监测环境系统的机会。作为我们之前工作的一部分,我们提出了一个新的框架(WQMCM),将越来越常见的当地农场规模的传感器网络结合在一起,在流域中学习和预测(使用预测模型)流域事件对下游环境的影响,从而实现动态决策。现有模型使用复杂的参数,难以提取,加上网络节点的限制(电池寿命,计算能力等,传感器的可用性),使得有必要开发简化模型以在网络中部署。本文通过简化模型参数和仅使用一年的训练数据集,研究了数据驱动的预测总氧化硝(TON)日通量的模型。来自爱尔兰流域的数据被用于训练模型。通过从现有的硝酸盐损失模型中提取细节,研究了模型的简化。采用M5决策树模型对所提参数的训练样本进行分析,得到R2为0.92,RRMSE为0.26。与传统模型相比,该模型以更少的样本和更简单的参数获得了更好的结果。这显示了在协作网络化农场系统中实现实时营养控制和管理的希望。
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引用次数: 5
Design of electromagnetic sensor arrays optimised for inversion of the magnetic polarisability tensor 磁极化张量反演优化电磁传感器阵列设计
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133653
L. A. Marsh, Omar A. Abdel Rehim, Yee M. Tan, M. O’Toole, D. Armitage, A. Peyton
This paper presents a method for the simulation of sensitivity maps from an array of coils. Some of the criteria necessary for designing a coil array capable of inversion of the magnetic polarisability are examined, and sensitivity maps are analysed with this in mind. The summarised sensitivity map for a single optimised array is presented, as well as the results of noise testing of an inversion algorithm using simulated measurements. Finally, a method for the construction and testing of such an array is presented.
本文提出了一种模拟线圈阵列灵敏度图的方法。一些必要的标准,设计线圈阵列能够反演磁极化率进行了检查,并分析了灵敏度图与此有关。摘要给出了单个优化阵列的灵敏度图,以及利用模拟测量对反演算法进行噪声测试的结果。最后,给出了该阵列的构造和测试方法。
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引用次数: 7
Can smart devices assist in geometric model building? 智能设备能否协助几何模型的建立?
Pub Date : 2015-04-13 DOI: 10.1109/SAS.2015.7133625
R. Milliken, Jim Cordwell, Stephen Anderson, Ralph Robert Martin, A. Marshall
The creation of precise three dimensional geometric models produced from visual information from low cost smart devices has many potential applications. There is a need to establish the capability of such devices, to determine if they are suitable. We explain how a typical smart device could be used in the creation of precise 3D geometric models from visual information, and establish a benchmark for evaluating such devices via a simulator which allows for parametric exploration of device capabilities. Various vision based algorithms (e.g. SLAM) could benefit from auxiliary sensor inputs, e.g. to solve the problem of determining the scale of the object being sensed. We discuss how the ancillary sensors in smart devices can assist in 3D mensuration to underpin 3D scene generation and 3D model building. We describe a number of tests performed on the inertial sensors integrated into consumer smart devices to ascertain their performance characteristics. These findings are then incorporated in our simulations. We also explore the extent to which future improvements to technologies are likely to be beneficial. Our simulator allows modelling of a 3D scene, various sensors and the motion trajectory of the device whilst capturing data. We assess individual sensor outputs, and the quality of the fused sensor outputs in the context of 3D model building requirements.
从低成本智能设备的视觉信息中生成精确的三维几何模型具有许多潜在的应用。有必要确定这些装置的能力,以确定它们是否合适。我们解释了典型的智能设备如何用于从视觉信息中创建精确的3D几何模型,并通过模拟器建立了评估此类设备的基准,该模拟器允许对设备功能进行参数化探索。各种基于视觉的算法(例如SLAM)可以从辅助传感器输入中受益,例如解决确定被感测物体的尺度的问题。我们讨论了智能设备中的辅助传感器如何协助3D测量,以支持3D场景生成和3D模型构建。我们描述了对集成到消费者智能设备中的惯性传感器进行的一系列测试,以确定其性能特征。然后将这些发现纳入我们的模拟中。我们还探讨了未来技术改进可能带来的益处。我们的模拟器允许对3D场景,各种传感器和设备的运动轨迹进行建模,同时捕获数据。我们评估单个传感器输出,以及在3D模型构建要求的背景下融合传感器输出的质量。
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引用次数: 1
期刊
2015 IEEE Sensors Applications Symposium (SAS)
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