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2015 9th International Conference on Sensing Technology (ICST)最新文献

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Humidity sensor based on lossy mode resonances on an etched single mode fiber 基于刻蚀单模光纤损耗模共振的湿度传感器
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438424
J. Ascorbe, J. Corres, I. Matías, F. Arregui
Here we present a new structure to fabricate optical fiber sensors. This structure consists on an etched single mode optical fiber coated with a thin film of a semiconductor material by means of sputtering. The optical fiber was etched with hydrofluoric acid until it reaches 19 μm of diameter. Then it was attached to a U-holder and coated with the indium oxide nanocoating. The thin film generates a lossy mode resonance and when the relative humidity increases, the wavelength of the resonance shifts. Changes of 30% to 80% RH have been applied to the device obtaining a wavelength shift of 12 nm.
本文提出了一种制作光纤传感器的新结构。该结构通过溅射的方法在涂有半导体材料薄膜的蚀刻单模光纤上构成。将光纤用氢氟酸蚀刻至直径19 μm。然后将其连接到u型支架上,并涂上氧化铟纳米涂层。薄膜产生一种有损模式共振,当相对湿度增加时,共振的波长发生位移。将30%至80%的相对湿度变化应用于器件,获得12 nm的波长位移。
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引用次数: 2
A continuous wave radar technique for structural health monitoring 结构健康监测的连续波雷达技术
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438447
Alexander C. Amies, C. Pretty, G. Rodgers, J. Chase
Radar is a technique commonly used to determine the instantaneous distance between moving objects. This paper proposes the application of a frequency-modulated continuous wave technique for the purpose of drift sensing in a structural health monitoring context. This context requires the measurement of interstorey drift ratios to determine the damage to a structure. Any structural health monitoring system must be able to detect interstorey displacement accurately enough to ensure that any potentially damaging events are detected. The primary motivation for the development of this technique is to negate the limitations of current drift sensing methods (such as accelerometers and line-scan cameras). The proposed system is simulated, and it is found that with sufficiently large frequency sweep bandwidth, errors in displacement tracking can be as low as 0.26% of the actual displacement, with a minimum detectable displacement of 0.1%. These results justify the further development of a hardware prototype.
雷达是一种常用的技术,用于确定运动物体之间的瞬时距离。本文提出了一种调频连续波技术在结构健康监测中的应用。这种情况需要测量层间漂移比来确定对结构的破坏。任何结构健康监测系统都必须能够足够准确地检测层间位移,以确保检测到任何潜在的破坏事件。该技术发展的主要动机是消除当前漂移传感方法(如加速度计和线扫描相机)的局限性。仿真结果表明,在足够大的扫频带宽下,位移跟踪误差可低至实际位移的0.26%,最小可检测位移为0.1%。这些结果证明了硬件原型的进一步开发。
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引用次数: 1
Design and development of acoustic transducer array using PVDF for imaging application 成像用PVDF声换能器阵列的设计与研制
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438509
K. A. Ahmad, Mohamad Faizal Abd Rahman, A. A. Manaf, M. Yaacob
An acoustic transducer arrays was designed and developed for imaging application. There were two type of design and namely as single linear transducer array and dual linear transducer array. The transducer array has been break up into three different pitch element designs, 0.5 mm, 0.8 mm and 1.5 mm. The acoustic transducer array has been developed using polyvinylidene fluoride (PVDF) sheet and deposited on printed circuit board (PCB). The sensitivity of all transducers are evaluated and analysed. The setup measurement are based on reciprocity calibration method. The sensitivity of acoustic transducer array based on pitch element has shown in the result. The 1.5 mm pitch element gap has more sensitivity in 28 dB compare to 0.5 mm.
设计并研制了一种用于成像的声换能器阵列。有两种设计,即单线性换能器阵列和双线性换能器阵列。换能器阵列分为三种不同的间距元件设计,0.5 mm, 0.8 mm和1.5 mm。利用聚偏氟乙烯(PVDF)片材研制了一种声换能器阵列,并将其沉积在印刷电路板(PCB)上。对所有传感器的灵敏度进行了评估和分析。设置测量基于互易校准法。结果表明了基于基音单元的声换能器阵列的灵敏度。与0.5 mm相比,1.5 mm间距元件在28 dB时具有更高的灵敏度。
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引用次数: 2
In-line flow measurement of molten PLA in capillary flow channels using ultrasound 用超声波在线测量熔融PLA在毛细管流道中的流动
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438382
V. Putz, T. Buchegger, S. Apostol, T. Voglhuber-Brunnmaier, J. Miethlinger, B. Zagar, R. K. Selvasankar
Pulsed Wave Velocimetry (PWV) is an ultrasonic technique for measuring velocity profiles in flowing liquids. With an earlier prototype, we already demonstrated its applicability to monitor the flow behavior of molten polypropylene with different additives in capillary dies. In this contribution, we present an improved measurement setup, which allows testing liquids with temperatures > 220°C using a large bandwidth ultrasound transducer (UT). The UT works at room temperature and is acoustically coupled to the melt using a wave guide. The setup comprises active cooling and enables long-time in-line measurement. In this contribution, we show results obtained in-line during the extrusion of polylactide (PLA) with glass fibers at various feed rates. Using the acquired data, methods to calculate acoustical properties like the speed of sound and the damping in melt are discussed.
脉冲波测速(PWV)是一种用于测量流动液体速度分布的超声技术。通过早期的原型,我们已经证明了它在毛细管模具中监测不同添加剂的熔融聚丙烯流动行为的适用性。在这篇文章中,我们提出了一种改进的测量装置,它允许使用大带宽超声换能器(UT)测试温度> 220°C的液体。UT在室温下工作,并通过波导与熔体进行声学耦合。该装置包括主动冷却,并允许长时间在线测量。在这篇文章中,我们展示了在不同进料速率下用玻璃纤维挤出聚乳酸(PLA)时获得的结果。利用所获得的数据,讨论了计算熔体中声速和阻尼等声学特性的方法。
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引用次数: 2
Speed condition monitoring of rotating machinery using electrostatic method 用静电法监测旋转机械的转速状态
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438420
Lin Li, Xiaoxin Wang, Hongli Hu, XingyueYang
Rotational speed monitoring is a critical part in the automatic control system of large generators and centrifugal machine. This article designed a rotational speed measurement system using electrostatic sensors and a correlation signal processing method. Two categories were utilized for the speed measurement-two sensors using cross-correlation method and a single sensor using auto-correlation method. Meanwhile, further signal processing methods were adopted to improve the accuracy of measurement results. Experimental tests were carried out on a laboratory-scale test rig under a rotational speed range from 400r/min to 3800r/min. The results show that the linearity of cross-correlation method and auto-correlation under experimental conditions is 1.53% and 0.52% correspondingly. In the same time, the auto-correlation method has a higher accuracy than cross-correlation method with the relative error lower than 1%.
转速监测是大型发电机组和离心机自动控制系统的重要组成部分。本文设计了一种采用静电传感器和相关信号处理方法的转速测量系统。速度测量采用了两种方法:两个传感器采用互相关法和一个传感器采用自相关法。同时,采用进一步的信号处理方法,提高测量结果的精度。实验在实验室规模的试验台上进行,转速范围为400r/min ~ 3800r/min。结果表明,在实验条件下,互相关法和自相关法的线性度分别为1.53%和0.52%。同时,自相关方法比互相关方法具有更高的精度,相对误差小于1%。
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引用次数: 5
Modelling impedance for 3D impedimetric biosensor 三维阻抗生物传感器的阻抗建模
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438360
J. Yeh, K. Wang, Z. Salcic, Karthik Kannappan, A. Partridge
There is a growing need for new biosensing technologies that are more rapid and convenient to use for onsite sensing. Impedance-based electrochemical sensor is a promising candidate due to simplicity of its sensing mechanism. However, like other emerging biosensors, specificity, sensitivity, and reliability are major obstacles that limit their use in real-life applications. Electrode geometry and 3D shape design optimization have been popular research directions for improved sensor performance. The aim of this study is to develop a finite element modelling approach that allows calculation of electrode impedance for different electrode shapes under standard biological test medium. In addition, a method for comparing sensor sensitivity is also developed using bacterial target as case study. Impedance simulations were performed for different electrode shapes, namely flat, ridge, and trough. The effects of target binding on solution conductivity and diffusion were simulated. It was found trough shaped electrode showed the greatest change in diffusion impedance upon target recognition. However, different shapes gave maximum change in solution impedance depending on the position of bound target.
人们对新的生物传感技术的需求日益增长,这种技术可以更快速、更方便地用于现场传感。基于阻抗的电化学传感器由于其传感机制简单,是一种很有前途的候选传感器。然而,像其他新兴的生物传感器一样,特异性、灵敏度和可靠性是限制其在实际应用中的主要障碍。电极几何和三维形状设计优化是提高传感器性能的热门研究方向。本研究的目的是开发一种有限元建模方法,允许在标准生物测试介质下计算不同电极形状的电极阻抗。此外,还以细菌靶为例,提出了一种比较传感器灵敏度的方法。阻抗模拟进行了不同的电极形状,即平面,脊和槽。模拟了靶结合对溶液电导率和扩散的影响。发现槽形电极在识别目标时扩散阻抗变化最大。然而,不同形状的解阻抗随绑定目标的位置变化最大。
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引用次数: 1
A passive wireless tracking system for indoor assistive monitoring 一种用于室内辅助监测的无源无线跟踪系统
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438379
Y. Kho, N. Chong, Refik Caglar Kizilirmak
This paper presents a design concept and implementation of an indoor passive tracking system that utilises an array of Wi-Fi transceivers, and without any electronic device or tag attached to the object being tracked. Such tracking is made possible by exploiting the fundamental characteristic of signal attenuation due to object blocking, i.e. shadowing, that is prevalent in a typical wireless communication system. By detecting significant signal attenuation in the system (i.e. by measuring the received signal strength value), it is possible to infer that an object is blocking the line-of-sight (LOS) link in a transceiver set and therefore transforming the existing hardware configuration into a proximity sensors network.
本文提出了一种室内无源跟踪系统的设计概念和实现,该系统利用Wi-Fi收发器阵列,并且没有任何电子设备或标签附加到被跟踪对象上。这种跟踪是通过利用在典型无线通信系统中普遍存在的由于对象阻塞(即阴影)引起的信号衰减的基本特性而成为可能的。通过检测系统中显著的信号衰减(即通过测量接收到的信号强度值),可以推断出一个物体阻塞了收发器组中的视距(LOS)链路,从而将现有的硬件配置转换为接近传感器网络。
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引用次数: 3
Implementation of application by gaze interaction on a tablet computer for challenged people 在平板电脑上为残疾人士实现凝视交互应用
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438425
K. Shibasato, Chiaki Tateyama, H. Ohtsuka, Y. Shimada
The Japanese government conducted measures for persons with disabilities in 2013 and they reported that about 2.2 million of challenged children aged 17 or younger live in Japan. Those children cannot communicate with others without somebody's help because of severe physical disabilities and they are wholeheartedly keen to become a member of a society and crave a device/application to communicate with other people. Indeed, there are many models of computer and tablet produced in Japan, however, quite small number of products are designed for the challenged children because difficulties of the children are unique and each assistive device should be designed individually. Therefore it's not easy to produce common-use devices or applications, and it's not easy for company to gain a profit from such special devices/applications. Finally, few types of assistive product are available even though a lot of challenged children desire such assistive device and application to be produced. In this paper, application by gaze interaction on a tablet computer was proposed and examined the performance and effectiveness of this application through trial classes in special-needs school. Results of experiment through trial classes suggested that the proposed application gained high appreciation from teachers of special-need school.
日本政府于2013年开展了残疾人措施,报告称,日本约有220万17岁及以下的残疾儿童。由于严重的身体残疾,这些孩子没有别人的帮助就无法与他人交流,他们全心全意地渴望成为社会的一员,渴望有一个设备/应用程序与他人交流。事实上,日本生产的电脑和平板电脑有很多型号,但是为残疾儿童设计的产品很少,因为儿童的困难是独特的,每个辅助设备都应该单独设计。因此,不容易生产出通用的设备或应用程序,公司也不容易从这些特殊的设备/应用程序中获利。最后,尽管许多残疾儿童希望生产这样的辅助装置和应用程序,但可供使用的辅助产品种类很少。本文提出了平板电脑上的凝视交互应用,并通过特殊需要学校的试验班检验了该应用的性能和有效性。通过实验班的实验结果表明,提出的申请得到了特殊需要学校教师的高度评价。
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引用次数: 1
Ambient temperature effect on Amorphous Silicon (A-Si) Photovoltaic module using sensing technology 环境温度对非晶硅(A-Si)光伏组件的影响
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438399
S. Zahurul, N. Mariun, M. L. Othman, H. Hizam, I. Abidin, Arash Toudeshki
Temperature and solar irradiance are the two dominating cardinals that determine the electrical performance of Photovoltaic (PV) module. In this paper, an experiment is conducted considering Amorphous Silicon (A-Si) PV module in both indoor and outdoor condition to investigate the temperature effect on A-Si module's performance in terms of efficiency and output power through an automatic resistor selection system. The experimental result shows that A-Si PV module has small temperature coefficient effect; however it has higher effect on solar radiation coefficient. A comparison analysis is evaluated with different models to validate the experimental data.
温度和太阳辐照度是决定光伏(PV)组件电性能的两个主要基数。本文以非晶硅(Amorphous Silicon, A-Si)光伏组件为实验对象,在室内和室外条件下,通过自动电阻选择系统,研究温度对A-Si组件效率和输出功率的影响。实验结果表明,A-Si光伏组件具有较小的温度系数效应;但对太阳辐射系数的影响较大。用不同的模型进行了对比分析,验证了实验数据的正确性。
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引用次数: 5
An architecture to analyze big data in the Internet of Things 一种分析物联网大数据的架构
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438483
Sadia Din, H. Ghayvat, Anand Paul, Awais Ahmad, M. Rathore, I. Shafi
Internet of Things (IoT) is nowadays increasingly becoming a worldwide network of interconnected devices uniquely addressable, via a standard communication protocol. Such devices generate a massive volume of heterogeneous data, which lead a system towards a major computational challenges, such as aggregation, storing, and processing. Also, a major problem arises when there is a need to extract useful information from this massive volume of data. Therefore, to address these needs, this paper proposes an architecture to analyze big data in the IoT. The basic concept involves the partitioning of dynamic data, i.e., big data with the complex magnitude is divided into subsets. These subsets are based on the theoretical model of data fusion, which works in the Hadoop processing server to enhance the computational efficiency. The proposed architecture is tested by analyzing healthcare data sets, mainly comprises of activities including walking, running, ECG. The feasibility and efficiency of the proposed architecture are implemented on Hadoop single node setup on UBUNTU 14.04 LTS core™i5 machine with 3.2 GHz processor and 4 GB memory. The results show that the proposed architecture efficiently analyze the massive volume of data with a maximum throughput.
如今,物联网(IoT)正日益成为一个由可通过标准通信协议唯一寻址的互联设备组成的全球网络。这样的设备会产生大量的异构数据,这给系统带来了巨大的计算挑战,比如聚合、存储和处理。此外,当需要从大量数据中提取有用信息时,会出现一个主要问题。因此,为了满足这些需求,本文提出了一种分析物联网大数据的架构。其基本概念涉及到动态数据的划分,即将具有复杂量级的大数据划分为子集。这些子集基于数据融合的理论模型,在Hadoop处理服务器上工作,以提高计算效率。通过分析医疗数据集对所提出的体系结构进行了测试,主要包括步行、跑步、心电图等活动。在3.2 GHz处理器和4gb内存的UBUNTU 14.04 LTS core™i5机器上,在Hadoop单节点设置上实现了该架构的可行性和效率。结果表明,该架构能够以最大的吞吐量高效地分析海量数据。
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引用次数: 22
期刊
2015 9th International Conference on Sensing Technology (ICST)
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