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2013 IEEE International Conference on Body Sensor Networks最新文献

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Novel smart sensor glove for arthritis rehabiliation 用于关节炎康复的新型智能传感器手套
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575482
B. O’flynn, Javier Torres Sanchez, P. Angove, J. Connolly, J. Condell, K. Curran, P. Gardiner
Rheumatoid Arthritis (RA) is a disease which attacks the synovial tissue lubricating skeletal joints. This systemic condition affects the musculoskeletal system, including bones, joints, muscles and tendons that contribute to loss of function and Range of Motion (ROM). Traditional measurement of arthritis requires labour intensive personal examination by medical staff which through their objective measures may hinder the enactment and analysis of arthritis rehabilitation. This paper presents the development of a smart glove to facilitate this rehabilitative process through the integration of sensors, processors and wireless technology to empirically measure ROM. The Tyndall/University of Ulster glove uses a combination of 20 bend sensors, 16 tri-axial accelerometers and 11 force sensors to detect joint movement. All sensors are placed on a flexible PCB to provide high levels of flexibility and sensor stability. The system operation means that the glove does not require calibration for each glove wearer.
类风湿性关节炎(RA)是一种攻击润滑骨骼关节的滑膜组织的疾病。这种全身性疾病影响肌肉骨骼系统,包括骨骼、关节、肌肉和肌腱,导致功能和活动范围(ROM)的丧失。传统的关节炎测量需要医务人员进行劳动密集型的个人检查,通过他们的客观测量可能会阻碍关节炎康复的制定和分析。本文介绍了一种智能手套的开发,通过集成传感器、处理器和无线技术来经验测量ROM,以促进这种康复过程。廷德尔/阿尔斯特大学的手套使用20个弯曲传感器、16个三轴加速度传感器和11个力传感器的组合来检测关节运动。所有传感器都放置在柔性PCB上,以提供高水平的灵活性和传感器稳定性。系统操作意味着手套不需要对每个手套佩戴者进行校准。
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引用次数: 44
Context-guided universal hybrid decision tree for activity classification 上下文导向的活动分类通用混合决策树
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575487
Hua-I Chang, Chieh Chien, James Y. Xu, G. Pottie
Obtaining accurate measurements of human activities is important for a broad set of health applications. We propose a context-based hybrid decision tree classifier with a real-time portable solution for reliably classifying daily life activities and for providing instant feedback. At first, to determine user contexts, we utilize sensors typically found on smart phones or tablets to collect environment data. Then, we select different types of hybrid decision tree classifiers based on detected human context. The tree classifier can flexibly implement different decision rules at its internal nodes, and can be adapted from a population-based model when supplemented by training data for individuals. In addition, with the introduction of portable devices, the users can receive instant feedback of their current mobility status.
获得对人类活动的准确测量对于广泛的健康应用非常重要。我们提出了一种基于上下文的混合决策树分类器,它具有实时便携的解决方案,可以可靠地对日常生活活动进行分类并提供即时反馈。首先,为了确定用户环境,我们利用智能手机或平板电脑上常见的传感器来收集环境数据。然后,我们根据检测到的人类语境选择不同类型的混合决策树分类器。树分类器可以在其内部节点上灵活地实现不同的决策规则,并且可以在补充个体训练数据的情况下从基于种群的模型中进行调整。此外,随着便携式设备的引入,用户可以收到他们当前移动状态的即时反馈。
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引用次数: 3
Macroscopic porosity generation in outer hydrogel membranes to offset sensitivity loss in implantable glucose sensors 外水凝胶膜产生宏观孔隙以抵消植入式葡萄糖传感器的灵敏度损失
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575468
S. Vaddiraju, Yan Wang, L. Qiang, D. Burgess, F. Papadimitrakopoulos
The function of implantable glucose sensor is hindered by post-implantation effects such as biofouling and negative tissue responses both of which lead to permeability reducing fibrous encapsulation. Utilization of drug-eluting composite coatings based on dexamethasone-containing poly (lactic-co-glycolic) acid (PLGA) microspheres and poly (vinyl alcohol) (PVA) hydrogel matrix has been shown to suppress inflammation over a period of 1–3 months. Herein, it is shown that these coatings provide another auxiliary venue to offset the negative effects of protein adsorption through generation of macroscopic porosity following microsphere degradation. Long-term studies in serum have indicated that, while biofouling clogs the microporosity of the hydrogel, it has been offset by the generated macroscopic porosity following microsphere degradation. This resulted in a two-fold recovery in sensor sensitivity as compared to controls. These findings suggest that the use of macroscopic porosity can reduce biofouling-induced sensitivity losses, an approach synergistic with drug-delivery based methodologies to mitigate negative tissue responses.
植入式葡萄糖传感器的功能受到植入后的影响,如生物污垢和负组织反应,两者都会导致纤维包封性降低。使用基于含地塞米松的聚乳酸-羟基乙酸(PLGA)微球和聚乙烯醇(PVA)水凝胶基质的药物洗脱复合涂层已被证明可以抑制炎症1-3个月。本文表明,这些涂层提供了另一种辅助场所,通过微球降解后产生宏观孔隙来抵消蛋白质吸附的负面影响。在血清中的长期研究表明,虽然生物污垢堵塞了水凝胶的微孔隙,但它已被微球降解后产生的宏观孔隙所抵消。与对照组相比,传感器灵敏度恢复了两倍。这些发现表明,使用宏观孔隙可以减少生物污垢引起的敏感性损失,这是一种与基于药物传递的方法协同作用的方法,可以减轻组织的负面反应。
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引用次数: 2
Synchronization methods for Bluetooth based WBANs 基于蓝牙的无线局域网的同步方法
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575489
Filippo Casamassima, Elisabetta Farella, L. Benini
Wireless Body Area Networks (WBANs) can take advantage of many wireless protocols. Among them, Bluetooth is a good candidate since its widespread adoption guarantees compatibility with a number of devices and significantly reduces development time. In most cases data collected from different sensors on different nodes need to be synchronized. We present a synchronization protocol that makes use of Bluetooth piconet internal clock to achieve near-millisecond accuracy with minimal radio communication overhead. Experimental results show that Bluetooth low power modes does not affect negatively accuracy, but improves it, obtaining less power consumption and higher synchronization accuracy.
无线体域网络(wban)可以利用许多无线协议。其中,蓝牙是一个很好的候选,因为它的广泛采用保证了与许多设备的兼容性,并大大缩短了开发时间。在大多数情况下,从不同节点的不同传感器收集的数据需要同步。我们提出了一种同步协议,利用蓝牙微网内部时钟以最小的无线电通信开销实现近毫秒的精度。实验结果表明,蓝牙低功耗模式对精度没有负面影响,反而提高了精度,获得了更低的功耗和更高的同步精度。
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引用次数: 6
Calibration of kinematic body sensor networks: Kinect-based gauging of data gloves “in the wild” 运动学身体传感器网络的校准:“野外”数据手套的运动学测量
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575526
A. Vicente, A. Faisal
Our hands generic precision and agility is yet unmatched by technology, hence the quantitative study of its daily life kinematics is fundamental to neurology/prosthetics & robotics and creative industries. State-of-the-art solutions capturing hand movements ‘in the wild’ requires wearable body sensor networks: data gloves. Yet, fast-accurate calibration is challenging due to variability in hand anatomy and complexity of finger joints. We present here novel methods for calibration using streaming information from depth cameras (Microsoft Kinect). Our low-cost system calibrates the data glove by observing a user wiggling their hands while wearing data gloves. Using inverse kinematics we reconstruct in real-time hand configuration, enabling augmented reality by superimposing the virtual and real hand veridically. We achieve accuracies of ±5 degrees RMSE over all 21 joints, almost 20% more accurate than standard calibration methods and accurately capture touching of fingertips and thumb — our benchmark test unmatched by other calibration methods.
我们的手的一般精度和敏捷性是技术无法比拟的,因此对其日常生活运动学的定量研究是神经病学/假肢和机器人技术以及创意产业的基础。最先进的解决方案需要可穿戴的身体传感器网络:数据手套。然而,由于手部解剖结构的变化和手指关节的复杂性,快速准确的校准是具有挑战性的。我们在这里提出了一种新的校准方法,使用来自深度相机(微软Kinect)的流信息。我们的低成本系统通过观察用户戴着数据手套时摆动双手来校准数据手套。利用运动学逆解方法实时重构手的构型,实现虚拟手与真实手的真实叠加,实现增强现实。我们在所有21个关节中实现了±5度RMSE的精度,比标准校准方法精确近20%,并准确捕获指尖和拇指的触摸-我们的基准测试是其他校准方法无法比拟的。
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引用次数: 10
Multi-channel pulse oximetry for wearable physiological monitoring 用于可穿戴生理监测的多通道脉搏血氧仪
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575518
Y. Mendelson, D. Dao, K. Chon
Pulse oximetry is a widely accepted clinical method for noninvasive monitoring of arterial oxygen saturation and pulse rate. Significant improvements aimed at curbing motion artifacts and improving reliability in detecting sufficiently strong photoplethysmographic signals are required to reduce errant measurements before the pulse oximeter can be considered for wider mobile applications. The present work describes the development of a wearable multi-channel reflectance pulse oximeter to investigate if a motion artifact-free signal can be obtained in at least one of the multichannels at any given time. Pilot findings provided a proof of concept to support the hypothesis that photoplethysmograms acquired concurrently from independent channels in a multi-channel pulse oximeter sensor respond differently to motion artifacts, thus laying the foundation for future development of robust active noise cancellation and data fusion based algorithms to mitigate the effects of motion artifacts.
脉搏血氧仪是一种被广泛接受的无创监测动脉氧饱和度和脉搏率的临床方法。在考虑将脉搏血氧仪用于更广泛的移动应用之前,需要在抑制运动伪影和提高检测足够强的光体积脉搏波信号的可靠性方面进行重大改进,以减少错误测量。目前的工作描述了可穿戴多通道反射脉搏血氧仪的开发,以研究是否可以在任何给定时间在至少一个多通道中获得无运动伪影信号。试点研究结果为多通道脉搏血氧计传感器中独立通道同时获取的光容量脉搏图对运动伪影的响应不同这一假设提供了概念证明,从而为未来开发基于鲁棒主动噪声消除和数据融合的算法以减轻运动伪影的影响奠定了基础。
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引用次数: 22
On-bed monitoring for range of motion exercises with a pressure sensitive bedsheet 床上监测运动范围与压力敏感床单
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575475
Jason J. Liu, Ming-chun Huang, Wenyao Xu, N. Alshurafa, M. Sarrafzadeh
This paper presents the design of an on-bed rehabilitation exercise monitoring system that utilizes a high density sensor bedsheet to evaluate active range of motion exercises. We propose and develop a novel framework to analyze the progression of pressure image sequences using manifold learning. The image sequences are reduced to a low dimensional subspace that can be measured against expected prior data for each of the rehabilitation exercises. We also present a metric to compare manifold similarities. Our experimental results on five on-bed exercises show that this system can accurately track compliance of patients to prescribed treatment programs. It allows physical therapists to evaluate how well patients adhere to the rehabilitation exercises. The system is convenient to setup, unobtrusive, and can be used for reliable, long term monitoring.
本文介绍了一种床上康复运动监测系统的设计,该系统利用高密度传感器床单来评估主动运动范围。我们提出并开发了一个新的框架来分析压力图像序列的进展使用流形学习。图像序列被简化为一个低维子空间,可以根据每个康复练习的预期先验数据进行测量。我们还提出了一个度量来比较多种相似性。我们在五个床上练习的实验结果表明,该系统可以准确地跟踪患者对规定治疗方案的依从性。它允许物理治疗师评估患者坚持康复练习的程度。该系统设置方便,不显眼,可用于可靠,长期监测。
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引用次数: 10
Forearm functional movement recognition using spare channel surface electromyography 利用备用通道表面肌电图识别前臂功能性运动
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575507
Zhiqiang Zhang, Charence Wong, Guang-Zhong Yang
Myoelectric signal analysis provides insight into neural control during muscle contraction and it has been widely used to identify the intention of performing different movements for patients with disabilities. Previous studies have demonstrated that detailed neural control information could be extracted from high-density surface electromyography (EMG) signals. However, this imposes practical constraints for routine applications. In this paper, we present an analysis framework using low-density EMG with example experiments demonstrating the control of forearm functional movement Eight channel surface EMG signals are used with subjects performing 6 different forearm and hand movements. Data analysis consisting of feature selection and pattern classification based on KNN, linear discriminant analysis and support vector machine is then performed. High classification accuracy has been achieved for all the subjects, illustrating the practical value of the method proposed.
肌电信号分析提供了对肌肉收缩过程中神经控制的深入了解,并已被广泛用于识别残疾患者进行不同运动的意图。以往的研究表明,高密度的表面肌电图(EMG)信号可以提取出详细的神经控制信息。然而,这对常规应用施加了实际限制。在本文中,我们提出了一个使用低密度肌电图的分析框架,并举例实验证明了前臂功能运动的控制,并使用8通道表面肌电信号进行6种不同的前臂和手部运动。数据分析包括基于KNN的特征选择和模式分类、线性判别分析和支持向量机。结果表明,该方法具有较高的分类精度,具有一定的实用价值。
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引用次数: 15
Precise indoor altitude estimation based on differential barometric sensing for wireless medical applications 无线医疗应用中基于差分气压传感的精确室内高度估计
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575485
Christian Bollmeyer, Tim Esemann, H. Gehring, H. Hellbrück
Some medical applications require precise information of position and orientation of a patient as changes affect pressure condition inside the body. In this paper we focus on altitude estimation, where altitude is a distance, in vertical direction, between a reference and a point of a human body. We suggest equipping wireless sensor nodes with high resolution pressure sensors to calculate the altitude with the barometric formula. We implement a body sensor network based on IEEE 802.15.4 and synchronization mechanism with a reference. Pressure variations due to environmental effects are compensated by cancellation with this differential measurement setup. We demonstrate the need for differential measurements and show with a series of measurements that environmental pressure variations have no significant effect on the proposed altitude estimation. Compared to existing systems, our solution is cost effective, easy to deploy and provides a flexible tradeoff between precision and location lag by adjusting a filter constant.
一些医疗应用需要病人的位置和方向的精确信息,因为变化会影响体内的压力状况。在本文中,我们的重点是高度估计,其中高度是一个距离,在垂直方向上,参考和人体的一点之间。建议在无线传感器节点上配备高分辨率压力传感器,利用气压公式计算海拔高度。我们实现了一个基于IEEE 802.15.4和参考同步机制的人体传感器网络。由于环境影响引起的压力变化可以通过这种差分测量装置抵消来补偿。我们论证了差分测量的必要性,并通过一系列测量表明,环境压力变化对提出的海拔估计没有显著影响。与现有系统相比,我们的解决方案具有成本效益,易于部署,并通过调整滤波器常数在精度和位置滞后之间提供灵活的权衡。
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引用次数: 16
A wearable sensor platform to monitor sweat pH and skin temperature 监测汗液pH值和皮肤温度的可穿戴传感器平台
Pub Date : 2013-05-06 DOI: 10.1109/BSN.2013.6575465
M. Caldara, C. Colleoni, E. Guido, G. Rosace, V. Re, A. Vitali
This work presents a wearable sensing system, aimed to monitor sweat pH and skin temperature in a noninvasive way. The wireless interface and the body coupling via a smart textile make it particularly comfortable and unobtrusive for the wearer; the applications extend from high risks patients hydration monitoring in a home-care environment, to fitness and wellness applications.
这项工作提出了一种可穿戴传感系统,旨在以无创方式监测汗液pH值和皮肤温度。无线接口和通过智能纺织品耦合的身体使其对穿戴者特别舒适和不显眼;应用范围从家庭护理环境中的高风险患者水合监测到健身和健康应用。
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引用次数: 19
期刊
2013 IEEE International Conference on Body Sensor Networks
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