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2022 IEEE International Conference on Design & Test of Integrated Micro & Nano-Systems (DTS)最新文献

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A Novel CSS-UWB Receiver Front-End 一种新型的CSS-UWB接收机前端
Thaar A. Kareem, H. Trabelsi
This paper presents a chirp spread spectrum receiver operating in the 3–5 GHz UWB for WBAN medical applications. The receiver uses direct conversion architecture without RF bandpass filter. Modeling, design, and simulations of the entire receiver architecture are described. Time domain as well as frequency domain analysis and simulation were done in order to determine optimized blocks parameters of the receiver. The receiver is capable of handling a pulse repetition frequency of 10Mp/s with a pulse width of 20ns and a bandwidth of 500MHz. The receiver provides an output power level between −4.3 and −7dBm which is sufficient to drive the baseband demodulator. A sensitivity of −93.3dBm, a voltage gain of 85 dB an IIP3 of 11.2dBm, and a NF of 6.1 dB are achieved.
本文提出了一种工作在3 - 5ghz超宽带的医用无线宽带宽带(WBAN)调频扩频接收机。接收机采用直接转换架构,无射频带通滤波器。描述了整个接收机体系结构的建模、设计和仿真。通过时域和频域分析与仿真,确定了接收机的优化块参数。该接收机能够处理脉冲重复频率为10Mp/s,脉冲宽度为20ns,带宽为500MHz。接收器提供−4.3和−7dBm之间的输出功率电平,足以驱动基带解调器。灵敏度为- 93.3dBm,电压增益为85 dB, IIP3为11.2dBm, NF为6.1 dB。
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引用次数: 0
An Overview of Machine Learning Applications in Hardware Security 机器学习在硬件安全中的应用概述
Basel Halak, Mohd Syafiq Mispan
this study explores the uses of machine learning (ML) in the field of hardware security, in particular, two applications areas are considered, namely, hardware Trojan (HT) and IC counterfeits. These examples demonstrate how ML algorithms can be employed as a defense mechanism to detect forged or tampered-with circuits. Our analysis shows that the ML detection accuracy still has not reached 100%. The selection and size of the feature vectors greatly affect the performance of the learning models, however, increasing the number of features or their size can lead to large overheads. Therefore, a thorough analysis is required to only select the appropriate- ate several relevant features that significantly contribute to the accuracy of ML models. The study also highlighted the need for a more robust deployment of ML algorithms to enhance their resilience to adversarial attacks.
本研究探讨了机器学习(ML)在硬件安全领域的应用,特别是考虑了两个应用领域,即硬件木马(HT)和IC假冒。这些例子展示了机器学习算法如何作为一种防御机制来检测伪造或篡改的电路。我们的分析表明,ML检测的准确率仍然没有达到100%。特征向量的选择和大小极大地影响了学习模型的性能,然而,增加特征的数量或它们的大小会导致很大的开销。因此,需要进行彻底的分析,只选择适当的几个相关特征,这些特征对ML模型的准确性有重要贡献。该研究还强调了更强大的机器学习算法部署的必要性,以增强其对对抗性攻击的抵御能力。
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引用次数: 1
VVC intra prediction decoder: Feature improvement and performance analysis VVC帧内预测解码器:特征改进与性能分析
Aymen Zayed, N. Belhadj, K. Khalifa, M. H. Bedoui
Nowadays, streaming applications have been in great demand, especially due to covid-19 (teleworking, online teaching, virtual reality, etc.). In addition, artificial intelligence has become widely used especially in video processing domains, so a video with high quality improves the accuracy rate of this application. To meet these needs, the Versatile Video Coding standard (VVC) has appeared to give a high compression efficiency compared to high-efficiency video coding. This norm consists of a high complexity algorithm that offers an improvement in processing time and decreases the bit rate by 50 % thanks to several new compression techniques. In this context, we propose the implementation of an intra prediction decoding chain of this standard on a system on chip. In this work, we highlight the VVC feature enhancements, we present the suitable method for VVC intra-prediction decoder implementation on the PYNQ-Z2, and we provide profiling in terms of decoding time and power consumption. As a future work, this study is helpful to distinguish the block that will be a candidate for a Hardware acceleration.
如今,流媒体应用的需求很大,特别是由于covid-19(远程办公,在线教学,虚拟现实等)。此外,人工智能已经得到了广泛的应用,特别是在视频处理领域,因此高质量的视频可以提高这一应用的准确率。为了满足这些需求,通用视频编码标准(VVC)的出现与高效视频编码相比具有更高的压缩效率。该规范由一个高复杂度算法组成,由于采用了几种新的压缩技术,该算法缩短了处理时间,并将比特率降低了50%。在此背景下,我们提出在片上系统上实现该标准的内预测解码链。在这项工作中,我们强调了VVC特征的增强,我们提出了适合在PYNQ-Z2上实现VVC内预测解码器的方法,并提供了解码时间和功耗方面的分析。作为未来的工作,本研究有助于区分将成为硬件加速候选的块。
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引用次数: 1
Electrical properties modulation of PVA-glycerol based composites for flexible sensors 柔性传感器用聚乙烯醇基复合材料的电性能调制
Marwa Gassab, A. Sylvestre, S. Basrour, C. Dridi
Physical and electrical properties of films composed of polyvinyl alcohol (PVA) polymer with glycerol (Gly) used as a plasticizer are reported. These plasticized polymer blends are promising for flexible sensors. Different concentrations (wt%) of Gly (10, 20, 30, 40) are added to the PVA matrix prepared using a facile solution casting method. The films were characterized using FTIR, DSC and impedance spectroscopy.
本文报道了聚乙烯醇(PVA)聚合物与甘油(Gly)增塑剂组成的薄膜的物理和电学性能。这些增塑化的聚合物混合物有望用于柔性传感器。将不同浓度(wt%)的Gly(10,20,30,40)加入到使用易溶溶液铸造法制备的PVA基质中。用FTIR、DSC和阻抗谱对膜进行了表征。
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引用次数: 0
Improvement of the UV light sensors modeling numerical platform performances 紫外光传感器建模数值平台性能的改进
Bel Hadj Jrad Elyes, Belhaj Marwa, Dridi Cherif
UV Light sensors are among the most widely used photodetectors in many fields. The development of this type of photodiodes has been the interest of researchers in the field of modern optoelectronics. In this context, we propose some improvements on the Lambert W based platform for the extraction of the electrical parameters of traditional and innovative ZnO NRs based photodiodes. The lambert method allowed us to solve the nonlinear equation that relates the current to the voltage, while the enhanced Nelder Mead algorithm and the RMSE function are iterative calculation and optimization methods respectively. The improvements were done in order to reach much smaller errors, keeping the theoretical model as close as possible to the I-V characteristic of the studied sensors. The method was applied for Zinc Oxide nanorods ZnO NRs and for the PPV-C6/ZnO NRs based heterojunctions as UV light sensors under illumination which have been studied by our team very recently. Thanks to the proposed improvements, the enhanced platform showed lower margin of error (RMSE~10-7) which results in more accurate parameters, with a less calculation time.
紫外光传感器是许多领域中应用最广泛的光电探测器之一。这种类型的光电二极管的发展一直是现代光电子领域研究人员的兴趣。在此背景下,我们提出了一些基于Lambert W的平台的改进,用于提取传统和创新的ZnO NRs光电二极管的电气参数。lambert方法允许我们求解电流与电压的非线性方程,而增强的Nelder Mead算法和RMSE函数分别是迭代计算和优化方法。改进是为了达到更小的误差,使理论模型尽可能接近所研究传感器的I-V特性。该方法应用于氧化锌纳米棒ZnO NRs和PPV-C6/ZnO NRs异质结作为照明下的紫外光传感器,这是我们团队最近研究的。改进后的平台误差范围更小(RMSE~10-7),计算时间更短,参数更准确。
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引用次数: 2
Lyapunov Based Nonlinear Control Logic for Robotic Goalkeeper 基于Lyapunov的机器人守门员非线性控制逻辑
Mohammed A. A. Desouky, Youssef R.A. Bishay, Omar S.M. Saddad
The problem of controlling a robotic goalkeeper to intercept a soccer ball is studied within the context of the direct Lyapunov theory. The rotational dynamics of the goalkeeper body is modeled kinematically using geometric approach and dynamically via Eulerian physics. A nonlinear control law is proposed to satisfy the stability conditions in the sense of Lyapunov. Further analysis shows that the system becomes globally asymptotically stable with zero steady state error. The simulation results demonstrate the good performance, in terms of settling time and steady state error, of the proposed law in comparison with other linear control logic. Index Terms-Lyapunov Direct Method, Nonlinear controller, Lyapunov Stability Analysis, Steady State Error Analysis, Robotic Goalkeeper, Mathematical Modeling, Eulerian Physics, Rotational Motion, Rotational Dynamics
在直接李亚普诺夫理论的背景下,研究了机器人守门员拦截足球的控制问题。采用几何方法对守门员身体的旋转动力学进行了运动学建模,并采用欧拉物理方法对其进行了动力学建模。为了满足李雅普诺夫意义上的稳定条件,提出了一种非线性控制律。进一步分析表明,系统全局渐近稳定,稳态误差为零。仿真结果表明,与其他线性控制逻辑相比,该律在稳定时间和稳态误差方面具有良好的性能。索引术语:李雅普诺夫直接法,非线性控制器,李雅普诺夫稳定性分析,稳态误差分析,机器人守门员,数学建模,欧拉物理,旋转运动,旋转动力学
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引用次数: 1
Overview of the Nonlinear Dynamic's Basic Equations of Op-Amps in Large Signal Mode 大信号模式下运算放大器非线性动力学基本方程综述
N. Prokopenko, V. Chumakov, A. Bugakova, A. Gaiduk
The article provides an overview of the main equations based on the analysis of literature sources and the authors' own research, describing the dependence of the slew rate (SR) of BJT/CMOS operational amplifiers (Op-Amps) and the transient settling time in a nonlinear mode. In this case, the following variants of the throughput characteristics of the drivers of the integrating correction capacitance of the Op-Amp are considered: linear without restrictions, linear with restriction, piecewise linear with a dead zone, exponential, quadratic, quasi-linear with a section of increased steepness. The limits of the applicability of the existing equations for SR are determined. Recommendations are given for designing high-speed Op-Amps of a new generation.
本文在分析文献来源和作者自身研究的基础上,概述了主要方程,描述了非线性模式下BJT/CMOS运算放大器(Op-Amps)的摆率(SR)与瞬态沉降时间的关系。在这种情况下,考虑运算放大器积分校正电容驱动器的吞吐量特性的以下变量:无限制的线性,有限制的线性,带死区的分段线性,指数型,二次型,带陡度增加部分的准线性。确定了现有方程的适用范围。对新一代高速运算放大器的设计提出了建议。
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引用次数: 3
Drowsiness Detection with a Limited Number of EEG Physiological Signals 利用有限数量的脑电图生理信号检测睡意
Rabiaa Lachtar, S. Jovanovic, K. Khalifa, R. Cheikh, S. Weber, M. H. Bedoui
A variety of studies have already been carried out to try to discriminate the different stages of alertness of a human subject. The purpose of this paper is to propose a method for detecting drowsiness in drivers by adopting a real-time analysis of EEG activity. First, we introduce our database collected at the Technology and Medical Imaging (TIM) laboratory of the University of Monastir, Tunisia. Second, we propose a method for the detection of the decrease of vigilance from a single EEG channel. This method, based on the SVM classifier, was tested on the collected database and allows to detect drowsiness results up to 91.39% in terms of accuracy.
人们已经进行了各种各样的研究,试图区分人类受试者的不同警觉性阶段。本文的目的是提出一种通过实时分析脑电图活动来检测驾驶员睡意的方法。首先,我们介绍在突尼斯Monastir大学技术和医学成像(TIM)实验室收集的数据库。其次,我们提出了一种从单个EEG通道检测警觉性下降的方法。该方法基于SVM分类器,在收集的数据库上进行了测试,检测困倦结果的准确率高达91.39%。
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引用次数: 0
Optical Modeling and Characterization of Lipid Emulsion Skin Phantoms for SWIR Diffuse Reflectance Spectroscopy 用于SWIR漫反射光谱的脂质乳液皮肤幽灵的光学建模和表征
Karim D. Khalil, Muhammad R. Eliwa, A. Othman, Y. Sabry
Skin phantoms provide an efficient way to model light interaction with the human skin. The interest in these phantoms is gaining momentum due to the growing market need for building non-invasive spectral sensors. In this work, lipid-emulsion based phantoms are investigated for the purpose of mimicking the skin in the shortwave infrared (SWIR) range of 1350 nm-2600 nm. Photonic Monte-Carlo simulations are used for modeling the lipid phantoms and to study their expected diffuse reflectance spectrum at different concentrations taking into account light absorption and scattering. Finger skin measurements for different subjects are used for comparison. SMOFlipid (20%)-based phantoms are prepared and measured at concentrations of 2% and 1% looking for the best match with the finger diffuse reflectance spectrum. A concentration of 1.3% is expected to best mimic the skin in the wavelength range of interest, in agreement with the theoretical simulations.
皮肤幻影为模拟光与人体皮肤的相互作用提供了一种有效的方法。由于市场对非侵入性光谱传感器的需求不断增长,对这些幽灵的兴趣正在获得动力。在这项工作中,研究了基于脂质乳液的模型,目的是在1350 nm-2600 nm的短波红外(SWIR)范围内模拟皮肤。利用光子蒙特卡罗模拟方法对脂质幻影进行了建模,并在考虑光吸收和散射的情况下,研究了不同浓度下脂质幻影的漫反射光谱。不同受试者的手指皮肤测量值用于比较。制备了基于smofl脂(20%)的模型,并在浓度为2%和1%的情况下进行了测量,寻找与手指漫反射光谱的最佳匹配。与理论模拟结果一致,1.3%的浓度有望在感兴趣的波长范围内最好地模拟皮肤。
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引用次数: 0
Embedded Keccak implementation on FPGA 嵌入式Keccak在FPGA上的实现
J. Ktari, T. Frikha, M. Yousfi, Mohamed Kadhem Belghith, Nessrine Sanei
The use of Blockchain has evolved over the last decade. It has touched many fields such as health, industry 4.0, smart cities, agriculture, education etc. Being a guarantee of security, the Blockchain requires to be careful with the data used. In the medical field, patient data is confidential and in order to have access to it, it is necessary to guarantee foolproof security. To do this, the best consensus to use is the PoW. In this paper, we will optimize the code and implement the PoW as an IP in order to accelerate its execution time and consequently minimize the energy consumption. The used Blockchain in this work is the Ethereum and its consensus is the Keccak.
区块链的使用在过去十年中不断发展。涉及健康、工业4.0、智慧城市、农业、教育等多个领域。为了保证安全性,区块链需要小心使用的数据。在医疗领域,患者数据是保密的,为了访问它,有必要保证万无一失的安全性。要做到这一点,最好的共识是PoW。在本文中,我们将优化代码并将PoW作为IP实现,以加快其执行时间,从而最大限度地减少能耗。在这项工作中使用的区块链是以太坊,它的共识是Keccak。
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引用次数: 5
期刊
2022 IEEE International Conference on Design & Test of Integrated Micro & Nano-Systems (DTS)
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