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2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)最新文献

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Cloud-based mobile platform for EEG signal analysis 基于云的脑电信号分析移动平台
Emir Džaferović, Sabahudin Vrtagic, Lejla Bandic, Jasmin Kevric, A. Subasi, S. Qaisar
It is estimated that there are millions of people with epilepsy around the world. Seizure detection and prediction systems are built to improve lifestyle of patients. Closed-loop systems are designed to predict and detect seizures and inform patient and caretakers. Ideally, wireless technologies are used in order not to interfere with patient's life. We build a prototype for closed-loop systems consisting of Mind Wave EEG capturing device and Android application communicating via Bluetooth. The application can store signals locally or send them to cloud and then process them for different applications such as BCI, Neurofeedback, epileptic seizure prediction, etc.
据估计,全世界有数百万癫痫患者。癫痫检测和预测系统的建立是为了改善患者的生活方式。闭环系统旨在预测和检测癫痫发作,并通知患者和护理人员。理想情况下,使用无线技术是为了不干扰病人的生活。我们构建了一个由脑电波捕获设备和Android应用程序通过蓝牙通信组成的闭环系统原型。该应用程序可以将信号存储在本地或发送到云端,然后处理它们用于不同的应用程序,如脑机接口、神经反馈、癫痫发作预测等。
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引用次数: 12
A modified square patch antenna with improved bandwidth performance for WiFi applications 改进的方形贴片天线,提高了WiFi应用的带宽性能
Rida Gadhafi, M. Sanduleanu
A modified square patch antenna, for WiFi applications, operating at 5.5 GHz, is proposed in this article. A complementary square open loop resonator, having the resonance frequency at the upper 3 dB frequency of the patch resonance, is introduced on the patch to enhance the bandwidth more than twice that of the conventional square patch antenna operating at the same frequency. The concept of introducing a resonant slot at 3 dB frequency helps to eliminate the cross-polarized component seen in most of the classical designs due to the presence of resonance slots. Simulation results show that 2:1 VSWR bandwidth of the antenna is 7% whereas the conventional square patch antenna offers only 3% bandwidth. The proposed antenna has a compact size of 1.9 cm × 2 cm. It offers a uniform gain of 4.25 dB and a directivity of 6.1 dB at the frequency of operation.
本文提出了一种改进的方形贴片天线,用于WiFi应用,工作频率为5.5 GHz。在贴片上引入一个互补的方形开环谐振器,其谐振频率在贴片谐振频率的3db以上,以提高在相同频率下工作的传统方形贴片天线的两倍以上的带宽。在3db频率引入谐振槽的概念有助于消除大多数经典设计中由于谐振槽的存在而出现的交叉极化分量。仿真结果表明,该天线2:1驻波比带宽为7%,而传统的方形贴片天线仅提供3%的带宽。所提出的天线具有1.9厘米× 2厘米的紧凑尺寸。它在工作频率上提供4.25 dB的均匀增益和6.1 dB的指向性。
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引用次数: 6
Halbach array design targeting nuclear magnetic resonance 以核磁共振为目标的哈尔巴赫阵列设计
Sunil T. Sonawane, M. Méribout
Halbach array is extensively used in process control industry targeting NMR (Nuclear Magnetic Resonance) technology as it has several advantages compared to non Halbach array methods; such as uniform magnetic field, light weight, low cost, and concentrated magnetic field. In this paper, we propose to design and assess a Halbach array targeting NMR application for a flowing multiphase flow process passing through a 2″ pipeline. The design methodology is based on Particle Swarm Optimization (PSO) algorithm, combined with a three dimensional (3D) finite element method-based software. The aim of the design is to generate simultaneously a concentric, uniform, and high intensity magnetic field inside the target sensing area in order to provide the most accurate results, while using a cheap and reasonably light weight hardware. Results of extensive 3D simulation results using an array of 12 permanent magnet elements of size (20mm × 20mm × 50mm size) indicate that an optimized magnetic field distribution of 0.9 Tesla maximal intensity and 606 ppm homogeneity could be achieved for an area of 40 mm diameter, which is adequate for our application.
Halbach阵列在过程控制工业中广泛应用于核磁共振(NMR)技术,因为它与非Halbach阵列方法相比具有几个优点;如磁场均匀、重量轻、成本低、磁场集中等。在本文中,我们建议设计和评估一个Halbach阵列,用于通过2″管道的流动多相流过程的核磁共振应用。设计方法是基于粒子群优化(PSO)算法,结合三维(3D)有限元法为基础的软件。设计的目的是在目标传感区域内同时产生同心,均匀和高强度的磁场,以提供最准确的结果,同时使用便宜且重量相当轻的硬件。利用12个尺寸为20mm × 20mm × 50mm的永磁元件阵列进行了广泛的三维模拟,结果表明,在直径为40 mm的区域内,优化后的磁场分布可以达到0.9特斯拉的最大强度和606 ppm的均匀性,足以满足我们的应用。
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引用次数: 3
On the efficient application of compressive sensing of physiological signals in medical diagnostics 生理信号压缩感知在医学诊断中的高效应用
Dana Al Akil, R. Shubair
Wireless telemonitoring of physiological signals is an evolving direction in personalized medicine and home-based e-Health. There are several constraints in designing such systems. The three important constraints are energy consumption, data compression and device cost. Compressive Sensing (CS) is an emerging data compression technique that overcomes those constraints. Nevertheless, the non-sparsity of physiological signals presents a major issue to the existing compressive sensing algorithms. This research proposes to use a developed compressive sensing algorithm which has the ability to recover such non-sparse physiological signals. This algorithm is Block Sparse Bayesian Learning (BSBL). The proposed algorithm and the conventional CS algorithm were used to compress Fetal ECG (FECG) signals. Results showed that using BSBL to recover non-sparse FECG is more efficient comparing with the conventional CS algorithm, SL0.
生理信号的无线远程监测是个性化医疗和家庭电子医疗的发展方向。在设计这样的系统时有几个限制。三个重要的制约因素是能耗、数据压缩和设备成本。压缩感知(CS)是一种新兴的数据压缩技术,它克服了这些限制。然而,生理信号的非稀疏性是现有压缩感知算法面临的主要问题。本研究提出使用一种开发的压缩感知算法,该算法具有恢复这种非稀疏生理信号的能力。该算法是块稀疏贝叶斯学习(BSBL)。将该算法与传统的CS算法相结合,对胎儿心电信号进行压缩。结果表明,与传统的CS算法SL0相比,BSBL对非稀疏FECG的恢复效率更高。
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引用次数: 1
A new figure of merit methodology for power amplifier combining technologies 一种新的功放组合技术的品质图方法
Paul O. Fisher, S. Al-Sarawi
A comparative analysis between well established and more recent solid state power amplifier (SSPA) combining techniques is presented. Based on this analysis, a new Figure of Merit (FOM) methodology is presented that can form part of a process to optimise SSPA design within the constraints of service, technology and performance requirements. Also, this formalises the process of determining the most appropriate SSPA design path, from the earliest stages, based on the above constraints as well as providing a detailed technology comparison to allow optimum technology selection.
对现有的固态功率放大器(SSPA)组合技术和最新的固态功率放大器组合技术进行了比较分析。在此分析的基础上,提出了一种新的优点图(FOM)方法,可以在服务、技术和性能要求的约束下,形成优化SSPA设计过程的一部分。此外,根据上述约束条件,从最早的阶段确定最合适的SSPA设计路径,并提供详细的技术比较,以实现最佳技术选择。
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引用次数: 0
ICA based feature learning and feature selection 基于ICA的特征学习和特征选择
M. Ibrahim, Adel Al-Jumaily
Feature extraction is playing a major role in bio signal processing. Feature identification and selection has two approaches. The common approach is engineering handcraft which is based on user experience and application area. While the other approach is feature learning that based on making the system identify and select the best features suit the application. The idea behind feature learning is to avoid dealing with any feature extraction or reduction algorithms and to train the suggested model on learning with avoiding the exposure to feature extraction which is mainly based on researcher experience. In this paper, Independent component analysis (ICA) will be implemented as a feature learning technique to learn the model extract the features from the input data. Deep learning approach will be proposed by implementing ICA to learn features. In the proposed model, the raw data will be read then represented by using different signal representation as Spectrogram, Wavelet and Wavelet Packet. Then, the new represented data will be fed to Independent component analysis layer to generate features and finally, the performance of the suggested scheme will be evaluated by applying different classifiers such as Support Vector Machine, Extreme Learning Machine and Discriminate Analysis. And As an improving step for the results, classifier fusion layer will be implemented to select the most accurate result for both training and testing set. Classifier fusion layer resulted in a promising training and testing accuracies. On the other side, Feature Selection is the process of selecting subset of features from a pool of features.
特征提取在生物信号处理中起着重要的作用。特征识别和选择有两种方法。常用的方法是基于用户体验和应用领域的工程手工。而另一种方法是基于使系统识别和选择最适合应用程序的特征的特征学习。特征学习背后的思想是避免处理任何特征提取或约简算法,并在学习上训练建议的模型,避免暴露于主要基于研究人员经验的特征提取。本文将独立分量分析(ICA)作为一种特征学习技术来学习模型,从输入数据中提取特征。我们将提出一种深度学习方法,通过ICA来学习特征。在该模型中,原始数据将被读取,然后使用不同的信号表示,如谱图、小波和小波包。然后,将新表示的数据馈送到独立成分分析层生成特征,最后,使用不同的分类器(如支持向量机、极限学习机和判别分析)来评估所建议方案的性能。作为对结果的改进步骤,将实现分类器融合层,为训练集和测试集选择最准确的结果。分类器融合层使分类器的训练和测试精度得到了很好的提高。另一方面,特征选择是从特征池中选择特征子集的过程。
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引用次数: 3
A fractional fuzzy PI-PD based modified smith predictor for controlling of FOPDT process 基于分数模糊PI-PD的改进smith预测器用于FOPDT过程控制
N. Özbek, I. Eker
In this study, a novel fractional fuzzy proportional-integral proportional-derivative (PI-PD) based modified Smith predictor (SP) is presented for controlling of an industrial air heating system with time delay. The performance of the proposed controller is validated with real-time experimental applications. Furthermore, a performance comparison is demonstrated via results of real-time applications through a set of performance indices.
本文提出了一种新的基于分数模糊比例-积分比例-导数(PI-PD)的修正Smith预测器(SP),用于具有时滞的工业空气加热系统的控制。通过实时实验验证了所提控制器的性能。此外,通过一组性能指标,通过实时应用程序的结果进行性能比较。
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引用次数: 4
Estimation of electricity production for a Moroccan wind farm 估算摩洛哥风力发电场的发电量
Ijjou Tizgui, H. Bouzahir, Fatima El Guezar, B. Benaid
In this paper, an estimation of the available and produced power in three wind farms (Akhfennir, Tarfaya and Fem El oued) in Southern Morocco is studied. Wind characteristics are analyzed. The Weibull distribution is used to model the wind speed at these wind parks, Fem El oued is the more windy park and where wind speed is more uniform. The monthly estimated available power density is more important in Fem El Oued, so, the investment in terms of increasing the number of wind turbines in this park can be profitable. The average usable power is estimated, Fem El oued has the lowest production because there is less number of wind turbines.
本文研究了摩洛哥南部三个风电场(Akhfennir, Tarfaya和Fem El oued)的可用和生产功率的估计。分析了风的特性。使用威布尔分布来模拟这些风电场的风速,Fem El oued是风力更大的风电场,风速更均匀。在Fem El Oued中,每月估计的可用功率密度更重要,因此,在增加该园区风力涡轮机数量方面的投资是有利可图的。平均可用功率估计,Fem El oued的产量最低,因为风力涡轮机的数量较少。
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引用次数: 2
Battery regression for guaranteed k-coverage in distributed sensor networks 分布式传感器网络中保证k覆盖的电池回归
Avinash More
In energy-constrain wireless sensor networks, maintaining k — coverage degree requested by an application while maximizing the network lifetime is a major challenge. Existing literature on k — coverage does not consider residual energy levels and actual battery discharge rate of ACTIVE nodes. OBSP (Optimized Backoff Sleep Protocol) considers the residual energy level information and battery discharge rate but ignores the k-coverage degree. This paper proposes k-CGP (k-Coverage Guarantee Protocol) based on battery discharge curve using polynomial regression for different coverage degrees (k). k-CGP determines the optimal wakeup rate of sleeping nodes by computing Optimal Sleep Time derived from battery discharge curve using polynomial regression and Received Signal Strength Indicator for distance estimation. The coverage redundancy is computed by using equi-distance test. Due to this, a sufficient number of ACTIVE nodes could be maintained while achieving lesser energy consumption in the network. Simulation results show that k-CGP achieves higher energy savings and sensing area coverage as compared to PEAS.
在能量受限的无线传感器网络中,在保证网络寿命最大化的同时保持应用所需的k覆盖度是一个重大挑战。现有的关于k -覆盖率的文献没有考虑ACTIVE节点的剩余能量水平和实际电池放电率。OBSP (Optimized Backoff Sleep Protocol)考虑剩余能级信息和电池放电率,但忽略k覆盖度。本文提出了基于电池放电曲线的k-覆盖保证协议(k- coverage Guarantee Protocol, k- cgp),对不同覆盖度(k)采用多项式回归,通过计算电池放电曲线得到的最优睡眠时间,利用接收信号强度指标进行距离估计,从而确定睡眠节点的最优唤醒率。采用等距离检验计算覆盖冗余。因此,可以在保持足够数量的ACTIVE节点的同时实现更少的网络能耗。仿真结果表明,与豌豆相比,k-CGP具有更高的节能和传感面积覆盖。
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引用次数: 3
Robust BSBL recovery method of physiological signals with application to fetal ECG 生理信号鲁棒BSBL恢复方法及其在胎儿心电中的应用
Dana Al Akil, R. Shubair
Compressive Sensing (CS) techniques have emerged with the increasing demand of high data rate transmissions. Recently, block sparse Bayesian learning (BSBL) framework was introduced which has a superior performance over conventional CS methods. In this paper, the BSBL-Expectation Maximization (BSBL-EM) and BSBL-Bound Optimization (BSBL-BO) methods were deployed. The performance, mainly quality and speed, of recovering a block sparse signal was analyzed. Results showed that the two algorithms performance is almost the same in terms of NMSE. However, BSBL-BO achieved better efficiency since the required recovery time was less than BSBL-EM. To further investigate the algorithms performance, they were deployed to recover a real world FECG segment. They achieved a satisfactory quality where the distortion is negligible and does not affect the clinical diagnosis. Nevertheless, using BSBL-BO is more suitable for wireless tele-monitoring based systems since it is more efficient.
压缩感知(CS)技术是随着高数据速率传输需求的增加而出现的。近年来,块稀疏贝叶斯学习(BSBL)框架被引入,它具有优于传统CS方法的性能。本文采用了bsbl -期望最大化(BSBL-EM)和bsbl -边界优化(BSBL-BO)方法。分析了恢复块稀疏信号的性能,主要是质量和速度。结果表明,两种算法在NMSE方面的性能基本相同。而BSBL-BO比BSBL-EM所需的恢复时间更短,效率更高。为了进一步研究算法的性能,他们被用于恢复真实世界的FECG片段。他们取得了令人满意的质量,其中扭曲是微不足道的,不影响临床诊断。然而,使用BSBL-BO更适合基于无线远程监控的系统,因为它更有效。
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引用次数: 0
期刊
2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)
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