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

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A wireless reference node to provide self-calibration capability to wireless sensors networks 为无线传感器网络提供自校准能力的无线参考节点
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438418
D. Smorgon, V. Fernicola
Wireless sensors networks (WSNs) are constantly expanding their application field, from simple two-state measurements (e.g., on/off, proximity detection, etc.) to distributed many-parameter measurements. Commercial WSNs offer a wide range of functions and performance with sensors sometimes achieving accuracy comparable with desktop instrumentation. However, the advantage of using such sensors for in-situ monitoring is often offset by the need of partially dismantling the network at the time of periodic network nodes calibration. As a result, new reference standards suitable for automatic and in-situ calibration of such sensors networks are needed in order to reduce the calibration cost, the inherent inefficiency and the logistic problems of a laboratory calibration, further exploiting the communication capabilities of a WSN. This work discusses the development of a wireless reference node (WRN) for the measuring of environment quantity such as air temperature (T) and relative humidity (RH). The module was developed for accurate measurements of additional environment-related quantities whose principle is based on a capacitive sensing mechanism (e.g. pressure, air-flow, moisture, etc...). The WRN performance was investigated in the temperature range from 0 °C to 40 °C and in the relative humidity range from 10 %rh to about 90 %rh for its potential use as a transfer standard for automatic in-situ calibrations. Some of novelties here reported were patented and are now available to upgrade a basic WSN with an automatic in-situ calibration capability.
无线传感器网络(WSNs)的应用领域正在不断扩大,从简单的双态测量(如开/关、接近检测等)到分布式多参数测量。商用无线传感器网络提供广泛的功能和性能,传感器有时可以达到与台式仪器相当的精度。然而,使用这种传感器进行现场监测的优势往往被需要在周期性网络节点校准时部分拆除网络所抵消。因此,为了降低校准成本、降低实验室校准固有的低效率和后勤问题,进一步开发WSN的通信能力,需要新的适用于此类传感器网络的自动和原位校准的参考标准。这项工作讨论了无线参考节点(WRN)的发展,用于测量环境量,如空气温度(T)和相对湿度(RH)。该模块是为精确测量额外的环境相关量而开发的,其原理基于电容传感机制(例如压力,空气流量,湿度等)。在0°C至40°C的温度范围和10% rh至约90% rh的相对湿度范围内,研究了WRN的性能,以便将其用作自动原位校准的传递标准。本文报道的一些新技术已获得专利,现在可用于升级具有自动原位校准功能的基本WSN。
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引用次数: 1
Novel application of spherical microphone array sensor with three-dimensional directivity for home and office environments 具有三维指向性的球形麦克风阵列传感器在家庭和办公环境中的新应用
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438497
T. Nakadai, R. Yoshida, Tomoki Taguchi, Hiroshi Mizoguchi, Ryohei Egusa, Etsuji Yamaguchi, S. Inagaki, Yoshiaki Takeda, M. Namatame, Masanori Sugimoto, F. Kusunoki
Interest in sound interfaces is increasing because such interfaces do not need advanced knowledge about particular devices, nor do they require physical operation. However, such interfaces are difficult to use because the general living environment often contains background noise. In order to solve this problem, sound separation systems that use a microphone array sensor have been proposed. In previous work, this microphone array sensor was a small system that considered only two-dimensional (2-D) directivity control. In this paper, we present the design of a spherical microphone array sensor with 3-D directivity. This 3-D directivity property is confirmed via an experimental evaluation.
人们对声音接口的兴趣越来越大,因为这种接口不需要对特定设备的高级知识,也不需要物理操作。然而,由于一般生活环境中经常存在背景噪声,因此这种接口难以使用。为了解决这一问题,提出了采用传声器阵列传感器的声分离系统。在以前的工作中,这种麦克风阵列传感器是一个只考虑二维(2-D)方向性控制的小型系统。本文设计了一种具有三维指向性的球形传声器阵列传感器。通过实验验证了这种三维指向性。
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引用次数: 0
Wireless sensor network for monitoring the health of healthcare facility environments 用于监测医疗保健设施环境健康状况的无线传感器网络
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438363
D. Preethichandra
Continues health monitoring of healthcare facility environments is vital in maintaining their quality of service standards. This paper discuss a suitable hardware implementation using reconfigurable network nodes to setup such a network with monitoring facilities to measure carbon dioxide, carbon monoxide, methane, ammonia gas concentrations, light and noise levels, and people movement information within the facility. These information can be fused together to make vital decisions alerting the healthcare facility staff to attend to a particular location without having dedicated staff for continuous monitoring. This will help dedicating the healthcare facility staff for other important care duties while the wireless sensor network looks after the health of the facility environment.
对医疗机构环境的持续健康监测对于维持其服务质量标准至关重要。本文讨论了一种合适的硬件实现,使用可重构网络节点来建立这样一个具有监测设施的网络,以测量设施内的二氧化碳、一氧化碳、甲烷、氨气浓度、光和噪音水平以及人员移动信息。这些信息可以融合在一起,以做出重要决策,提醒医疗机构的工作人员前往特定地点,而无需专门的工作人员进行持续监测。这将有助于医疗保健机构的工作人员专门从事其他重要的护理工作,而无线传感器网络则负责设施环境的健康。
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引用次数: 3
A sensor platform for the visually impaired to walk straight avoiding obstacles 为视障人士提供的一种传感器平台,帮助他们避开障碍物直走
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438513
S. Silva, D. Dias
We present a sensor platform to be mounted on the white cane used by the visually impaired. This can estimate the direction of user movement and enable the user to detect obstacles lying on the path in advance. The sensor platform contains an ultrasonic sensor and an IMU (Inertia Measurement Unit). We develop a model to estimate distances to obstacles in the path and their width based on sensor measurements. The model is demonstrated to have an overall accuracy of 84%, with accuracy as high as 90% for obstacles within 50cm in front of the user. Knowledge of obstacle locations and their size in advance, would enable us to guide visually impaired persons to deviate from their path and return to it after the obstacle has been passed.
我们设计了一个传感器平台,安装在视障人士使用的白色手杖上。这可以估计用户的运动方向,并使用户能够提前检测到路径上的障碍物。传感器平台包含一个超声波传感器和一个惯性测量单元。我们开发了一个基于传感器测量的模型来估计路径中障碍物的距离和它们的宽度。该模型的总体准确率为84%,对于用户前方50厘米范围内的障碍物,准确率高达90%。提前知道障碍物的位置和大小,可以帮助我们引导视障人士离开他们的路径,并在障碍物通过后返回。
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引用次数: 9
Dynamic duty cycle-based Wireless Sensor Network for underground pipeline monitoring 基于动态占空比的地下管线监测无线传感器网络
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438375
Liming Qiu, K. Wang, Z. Salcic
The Wireless Sensor Network (WSN)-based pipeline monitoring systems are expected to have long life time in order to make their deployment cost-effective. In reality, wireless transceivers are considered one of the main consumers of energy in individual sensor nodes of WSNs. The duty cycling technique which puts transceiver module into sleep state for the majority of sensor node's operating time is considered a highly effective method to reduce energy consumption. In this paper we present the use of Wake-on-Radio (WoR) for reduction of used energy and conducted power consumption experiments using CC430-based WSN nodes. The results show promising performance improvement when using WoR in the CC1101 radio transceiver of CC430. Then, an adaptive duty cycle algorithm based on the WoR functionality, which enables sensor nodes to dynamically adjust their WoR duty cycles according to the real-time wireless channel conditions in achieving reduced power consumption, was proposed.
基于无线传感器网络(WSN)的管道监测系统被期望具有较长的使用寿命,以使其部署具有成本效益。实际上,无线收发器被认为是无线传感器网络中单个传感器节点的主要能量消耗者之一。占空比技术使收发模块在传感器节点的大部分工作时间处于休眠状态,被认为是一种非常有效的降低能耗的方法。在本文中,我们介绍了使用无线唤醒(WoR)来减少使用的能量,并使用基于cc430的WSN节点进行了功耗实验。结果表明,在CC430的CC1101无线电收发器中使用WoR可以提高性能。然后,提出了一种基于WoR功能的自适应占空比算法,使传感器节点能够根据实时无线信道情况动态调整其WoR占空比,从而达到降低功耗的目的。
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引用次数: 2
Infrared multispectral imaging with silicon-based multiband pass filter and infrared focal plane array 基于硅基多带通滤波器和红外焦平面阵列的红外多光谱成像
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438394
R. Ueno, K. Ishii, Kazuhiro Suzuki, H. Honda, H. Funaki
This paper reports the implementation of a silicon-based infrared (IR) multiband pass filter (BPF) on an uncooled microbolometer IR focal plane array (IR-FPA), both of which are fabricated by the standard CMOS process. IR spectroscopy has been widely used as a sample identification technique, exploiting the fact that each molecule structure has a unique spectral feature. Using IR-BPF and IR-FPA, a low-cost and compact IR-spectral imaging system is realized. The microbolometer IR-FPA exhibits broad spectral response sufficient to cover the IR-region from the mid-infrared (3 μm) to far-infrared (8 μm~), which is broader than the coverage of conventional non-silicon-based photodetectors such as mercury cadmium telluride. Single-band images of invisible gases such as ethanol vapor and CO2 in breath are obtained with the IR-FPA. For multiband imaging, a guided-mode resonance IR filter is fabricated by patterning aluminum (Al) layer of 100 nm thickness on a silicon-on-insulator wafer. Measured peak transmittance wavelengths (λc) of square and hexagonal Al array are compared with results of rigorous coupled-wave analysis, as a function of the Al pattern period. The λc of 3.3, 3.9, and 4.4 μm are obtained at the pattern period of 1.8, 2.4, and 2.8 μm for the square array. In all cases, the λc slightly decreases for the hexagonal array. The full-width at half-maximum (FWHM) of each filter is approximately 200 nm for the λc of 4.4 μm, 400 nm for λc of 3.3 μm.
本文报道了在非制冷微热计红外焦平面阵列(IR- fpa)上实现硅基红外(IR)多带通滤波器(BPF),这两个滤波器都是用标准CMOS工艺制造的。红外光谱已被广泛用作样品鉴定技术,利用了每个分子结构具有独特的光谱特征的事实。采用IR-BPF和IR-FPA实现了低成本、紧凑的红外光谱成像系统。红外- fpa微辐射热计具有较宽的光谱响应,足以覆盖从中红外(3 μm)到远红外(8 μm~)的红外区域,这比传统的非硅基光电探测器(如碲化汞镉)的覆盖范围更广。IR-FPA可获得呼气中乙醇蒸气和二氧化碳等不可见气体的单波段图像。为了实现多波段成像,在绝缘体上硅晶片上制作了100 nm厚度的铝层,制成了导模共振红外滤波器。将方形和六边形Al阵列的透射光谱峰值波长(λc)与严格耦合波分析结果进行了比较,并将其作为Al模式周期的函数。在图形周期为1.8、2.4和2.8 μm时,方形阵列的λc分别为3.3、3.9和4.4 μm。在所有情况下,对于六边形阵列,λc都略有减小。当λc为4.4 μm时,各滤波器的半最大全宽约为200 nm,当λc为3.3 μm时,各滤波器的半最大全宽约为400 nm。
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引用次数: 1
A bioimpedance-based microflow cytometer with compact electronic instrumentation for counting of microparticles 一种基于生物阻抗的微流式细胞仪,带有用于计数微粒的紧凑电子仪器
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438383
Soumen Das, D. Das, Sudipto Maiti, K. Biswas
Cell counting in microfluidic platform finds many interesting applications in healthcare and medical technology. In microflow cytometers, cells are counted based on either optical or electrical properties. In this paper, a bioimpedance based microflow cytometer has been fabricated to detect and count the microparticles flowing through a microchannel. The numerical simulation suggests that the proposed device is capable to detect microparticles having different sizes and properties. Initially, the signal produced from cytometer are collected by data accusation system demonstrating generation of voltage pulse corresponding to each particle. Additionally, an instrumentation system has been developed to detect and count those pulses in real-time and display on a screen.
微流控平台的细胞计数在医疗保健和医疗技术中有许多有趣的应用。在微流式细胞仪中,细胞计数是基于光学或电学性质。本文制作了一种基于生物阻抗的微流式细胞仪,用于检测和计数通过微通道的微颗粒。数值模拟表明,该装置能够检测具有不同大小和性质的微粒。首先,由数据采集系统采集细胞仪产生的信号,显示每个粒子对应的电压脉冲的产生。此外,还开发了一种仪器系统,可以实时检测和计数这些脉冲,并在屏幕上显示。
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引用次数: 0
Data aggregation in multihop wireless mesh sensor Neural Networks 多跳无线网状传感器神经网络中的数据聚合
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438366
B. Jagyasi, Jabal Raval
Wireless sensor networks have been found to be useful for detection of events like volcanic eruption, landslide, and agricultural crop stress. The problem of in-network data aggregation for binary event detection has been well studied in literature for multihop wireless sensor networks with tree topology. In this paper, we propose a novel Neural Network based distributed detection approach for multihop wireless sensor networks with mesh topology. As compared to the tree topology, the unidirectional mesh topology resembles more closely to a neural network wherein each sensor node has been modeled as a neuron in the neural network. An exhaustive analysis has been presented to compare the proposed approach with the existing approaches for tree topology along with their modified counterparts for the mesh topology. The simulation results depicts a substantial gain in the detection accuracy by the proposed neural network based data aggregation approach in wireless mesh sensor networks as compared to the other existing methods for tree and mesh topologies of the wireless sensor networks.
无线传感器网络已被发现对火山爆发、滑坡和农作物应力等事件的检测很有用。针对树状拓扑的多跳无线传感器网络,研究了用于二值事件检测的网络内数据聚合问题。本文提出了一种基于神经网络的网状多跳无线传感器网络分布式检测方法。与树形拓扑结构相比,单向网格拓扑结构更类似于神经网络,其中每个传感器节点都被建模为神经网络中的神经元。本文对所提出的方法与现有的树形拓扑方法及其改进的网格拓扑方法进行了详尽的分析比较。仿真结果表明,与其他现有的无线传感器网络树状和网状拓扑结构方法相比,基于神经网络的数据聚合方法在无线网状传感器网络中的检测精度有了实质性的提高。
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引用次数: 3
Advances in stretched and oscillating-wire methods for magnetic measurement 磁测量中拉伸线法和振荡线法的研究进展
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438460
P. Arpaia, D. Caiazza, G. Deferne, C. Petrone, S. Russenschuck
A versatile measurement system has been designed and commissioned at CERN, which is based on a wire sensor in different modes of operation: the classical single-stretched wire mode, the oscillating wire mode employing frequencies well below the first natural resonance, as well as the vibrating wire mode where the wire is excited in the first or higher-order resonance conditions. In this paper, the main technical challenges and constraints of the wire methods are presented, together with the applications to locate the magnetic axis of a string of magnets on a common girder and to the measurement of multipole errors. Sources of uncertainty, stemming from the wire motion unsuitability, are discussed, different wire motion transducers are compared, and the effect of background fields and environmental effects is studied.
欧洲核子研究中心设计并调试了一个多功能测量系统,该系统基于不同操作模式的线传感器:经典的单拉伸线模式,振荡线模式,使用频率远低于第一次自然共振,以及振动线模式,其中线在一阶或高阶共振条件下被激发。本文介绍了导线法的主要技术挑战和制约因素,以及在公共梁上一串磁体的磁轴定位和多极误差测量中的应用。讨论了由导线运动不适宜性引起的不确定性来源,比较了不同的导线运动传感器,并研究了背景场和环境效应的影响。
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引用次数: 2
Robot-Aided Magnetic Sensors Readout Suit 机器人辅助磁传感器读出套装
Pub Date : 2015-12-01 DOI: 10.1109/ICSENST.2015.7438488
Marcelo Ribeiro
The RAMSRS (Robot-Aided Magnetic Sensors Readout Suit) consists of a system that integrates a robot arm with magnetic sensor readout units through a software which controls both the robot movements and the acquisition of data from the sensors. Permanent magnets are fixated to the robot arm though application specific magnet holders, while sensors read magnetic flux densities in 1D, 2D and 3D, so the integration software is able to combine accurate position information with magnetic field strength and present the output graphically for real time visualization as well as in comma separate value files for further analysis in external mathematical tools. The graphical interface of the integration software has a tabbed layout, where information is grouped into areas such as: status, configuration, control and measurement. The system has been developed to allow controlled magnet movements around magnetic sensors in order to identify the behavior of the magnetic field as seem by the sensor, which allows various different test experiments to be quickly performed in order to realize conceptual checks and validation of simulations, which saves development time and is a valuable step before manufacturing actual prototypes. Current applications include linear position detection, magnetic angle measurement, sensor characterization, validation of concepts, simulations and analytics, among others.
RAMSRS(机器人辅助磁传感器读出服)由一个系统组成,该系统通过控制机器人运动和从传感器获取数据的软件将机器人手臂与磁传感器读出单元集成在一起。永磁体通过应用特定的磁铁支架固定在机器人手臂上,而传感器可以读取1D, 2D和3D的磁通量密度,因此集成软件能够将精确的位置信息与磁场强度结合起来,并以图形形式显示输出,用于实时可视化,也可以在逗号分隔的值文件中进行进一步分析外部数学工具。集成软件的图形界面具有标签式布局,其中信息被分组到诸如:状态、配置、控制和测量等区域。该系统的开发是为了允许控制磁传感器周围的磁铁运动,以便识别传感器所显示的磁场行为,从而允许快速执行各种不同的测试实验,以实现概念检查和仿真验证,从而节省开发时间,是制造实际原型之前的宝贵步骤。目前的应用包括线性位置检测、磁角测量、传感器特性、概念验证、仿真和分析等。
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引用次数: 7
期刊
2015 9th International Conference on Sensing Technology (ICST)
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