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2021 IEEE Fifth Ecuador Technical Chapters Meeting (ETCM)最新文献

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Implementation of 32nm MD5 Crypto-Processor using Different Topographical Synthesis Techniques and Comparison with 500nm Node 不同拓扑合成技术下32nm MD5加密处理器的实现及与500nm节点的比较
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590739
Juan J. Jiménez, André Borja, Laetitia Silly, L. Prócel, L. Trojman, R. Taco
This work focuses on several synthetizations developed in both 32nm and 500nm technologies to evaluate the performance differences of MD5 Crypto-Processor. We decided to conduct a topographical synthesis instead of a nontopographical synthesis as it takes more parameters into account to create a more accurate design. We started by comparing some basic cells like inverters and register banks to understand the main differences between the two technologies. Several approaches were considered at this point to understand how different synthetization parameters affect the chip performance and characteristics. These different approaches were focused on time, power and area, and balanced configurations of synthesis flow. Finally, after comparing the performance given by the different approaches in basic digital structures, the balanced approach was implemented in 32nm and benchmarked with the 500nm implementation. Our conclusions were consistent among the various tests conducted and by downscaling we can expect a 10x increase in the clock frequency, a 100x decrease in power consumption, and around a 300x decrease in the area while using the 32nm technology. As a result, we developed a method to fairly compare complex systems to allow a designer to consider if the benefits justify the costs for a technology change.
本文重点研究了在32nm和500nm技术下开发的几种合成方法,以评估MD5加密处理器的性能差异。我们决定进行地形综合而不是非地形综合,因为它需要考虑更多的参数来创建更精确的设计。我们首先比较了一些基本单元,如逆变器和寄存器库,以了解两种技术之间的主要区别。在这一点上,考虑了几种方法来了解不同的合成参数如何影响芯片的性能和特性。这些不同的方法集中在时间、功率和面积上,以及合成流程的平衡配置。最后,在比较了不同方法在基本数字结构中的性能之后,平衡方法在32nm实现,并与500nm实现进行了基准测试。我们的结论在进行的各种测试中是一致的,通过缩小尺寸,我们可以预期时钟频率增加10倍,功耗降低100倍,在使用32nm技术时,面积减少约300倍。因此,我们开发了一种方法来公平地比较复杂的系统,以允许设计师考虑是否利益证明技术变更的成本是合理的。
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引用次数: 0
Data Mining in Electrical Distribution Networks: Optimal Location of Pilot Bus 配电网中的数据挖掘:先导母线的最优定位
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590646
Z. Ernesto Jaramillo, J. R. Castro, Tuesman D. Castillo, R. Reátegui
Pilot bus selection is a key parameter to the proper function of secondary voltage control strategies; this paper proposes a methodology for pilot bus selection using data mining algorithms K-means and DBSCAN. The data was generated by varying distribution network parameters and simulating the voltage profile using OpenDSS software. The methodology was implemented in IEEE 13 and 34 node test feeder standard distribution networks to illustrate the effectiveness of the proposed method.
导联母线的选择是二次电压控制策略能否发挥作用的关键参数;本文提出了一种利用数据挖掘算法K-means和DBSCAN进行导频总线选择的方法。通过改变配电网参数,利用OpenDSS软件对配电网的电压分布进行模拟,得到数据。在ieee13和ieee34节点测试馈线标准配电网中实施了该方法,验证了该方法的有效性。
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引用次数: 1
Text-based CAPTCHA Vulnerability Assessment using a Deep Learning-based Solver 基于文本的CAPTCHA漏洞评估,基于深度学习的求解器
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590750
Daniel Aguilar, Daniel Riofrío, D. Benítez, Noel Pérez, Ricardo Flores Moyano
The focus of this work is to test the security offered by Text-based CAPTCHAs. We present different types of CAPTCHAs and a preprocessing and segmentation process to clean noise in CAPTCHA images and crop digits or characters in single images. We present a convolutional neural network architecture trained under several hyperparameters, comparing multiple models with different batch sizes, epochs, and optimizers. We confirmed that using Text-based CAPTCHAs is no longer a secure mechanism for protection because, with simple computer vision techniques and current machine learning algorithms, they can be broken. We achieved a 90.49% accuracy with our model trained with a mix of four datasets and up to 97.10% with one dataset, which is enough to consider these schemes insecure in practice.
这项工作的重点是测试基于文本的captcha提供的安全性。我们提出了不同类型的CAPTCHA和预处理和分割过程,以清除CAPTCHA图像中的噪声和裁剪单个图像中的数字或字符。我们提出了一个在几个超参数下训练的卷积神经网络架构,比较了具有不同批大小、时代和优化器的多个模型。我们确认,使用基于文本的captcha不再是一种安全的保护机制,因为使用简单的计算机视觉技术和当前的机器学习算法,它们可以被破解。我们用四个数据集混合训练的模型达到了90.49%的准确率,用一个数据集训练的准确率高达97.10%,这足以认为这些方案在实践中是不安全的。
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引用次数: 0
Path Planning and Collision Prevention based on Computer Vision applied to a Mini-sized Multi-robot Testbed 基于计算机视觉的路径规划与碰撞预防在小型多机器人试验台中的应用
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590745
Leandro Ponce, P. Cruz, D. Maldonado
A practical testbed is crucial to reduce the gap between theory and real-world applications. Path-planning and collision prevention routines are essential for a reliable operation of these multi-robot platforms, so increasingly complex control algorithms can be proposed, designed and tested. This paper describes the recent progress made on the functionality of a mini-sized multi-robot testbed that runs based on ROS (Robotic Operating System). A high-level path planner, a collision prevention routine and motion controllers are proposed as part of the expansion to more complex applications that can run on the testbed. A PID-based orientation controller and an Inverse Kinematics position controller are designed and compared as viable solutions for following the waypoints generated by the high-level path planner. Improvements on software modularity, scalability and the addition of an extra mobile agent also comprise the main improvements for this new iteration of the testbed. The results of the path-planning routine, as well as the performance of the motion controllers are presented and discussed.
一个实际的测试平台对于缩小理论与实际应用之间的差距至关重要。路径规划和碰撞预防程序对于这些多机器人平台的可靠运行至关重要,因此可以提出,设计和测试越来越复杂的控制算法。本文介绍了基于ROS(机器人操作系统)的小型多机器人试验台的功能研究进展。一个高级路径规划器,一个碰撞预防程序和运动控制器被提出作为扩展到更复杂的应用程序,可以在测试平台上运行的一部分。设计了一种基于pid的姿态控制器和一种逆运动学位置控制器,并将其作为跟踪高级路径规划器生成的路点的可行方案进行了比较。软件模块化、可扩展性的改进和额外移动代理的增加也构成了这一新迭代测试平台的主要改进。给出并讨论了路径规划程序的结果,以及运动控制器的性能。
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引用次数: 0
A Control Techniques Comparison for Trajectory Tracking for a Robotics Platform With Time Delay. 具有时滞的机器人平台轨迹跟踪控制技术比较。
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590757
Byron Sarabia, D. Chávez, O. Camacho, Kleber Patiño
The research studies the problem that arises in the presence of temporary delays in control schemes. Delays cause a reduction in controller performance and can even cause system instability. In this work, control techniques dedicated to the attenuation of adverse effects in the trajectory tracking scheme with constant delays in time are implemented. The controllers analyzed are PD-Like, and Sliding Mode Controller (SMC); the compensator Smith Predictor is implemented. The MobileSim simulator is used with the Pioneer 3DX unicycle mobile robot model. The effectiveness of the control strategies is verified with the ISE performance index (Integral of Squared Error).
研究了控制方案中存在暂时延迟时所产生的问题。延迟会导致控制器性能降低,甚至可能导致系统不稳定。在这项工作中,实现了用于衰减具有恒定时间延迟的轨迹跟踪方案中的不利影响的控制技术。所分析的控制器有类pd控制器和滑模控制器(SMC);实现了补偿器史密斯预测器。MobileSim模拟器与先锋3DX独轮车移动机器人模型一起使用。利用ISE性能指标(平方误差积分)验证了控制策略的有效性。
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引用次数: 0
Mechatronic System Design and Development of iROD: EMG Controlled Bionic Prosthesis for Middle- Third Forearm Amputee 中-三前臂肌电控制仿生假肢机电系统设计与研制
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590715
Richard A. Vergaray, Roger F. Del Aguila, Gladys A. Avellaneda, R. Palomares, Jose Cornejo, Jorge A. Cornejo-Aguilar
In Peru, 5.2% of all the population are people with motor disabilities. Some of these with congenital malformations or forearm amputations suffer from difficulties within society to carry out their activities of daily living. Many times, they choose to use a cosmetic prosthesis, since a bionic one is very expensive. Today, thanks to 3D printing, it is possible to manufacture affordable bionic prosthesis. For this reason, the innovative research was carried out from 2019 to 2020 under the supervision of the School of Mechatronics Engineering at Ricardo Palma University, it was designed and developed in the Digital Systems Laboratory resulting in iROD, a bionic prosthesis for a person with amputation at the level of the middle third of the forearm applying EMG signals. In addition, this device captures EMG signals from the forearm using dry electrodes for greater patient comfort. For the development, the biomechanical concepts of the human hand were used, where SolidWorks was used for the mechanisms and then to be printed in 3D, Eagle for the electrical and electronic system, and Arduino IDE for the control system. This prosthesis was designed for Mr. Franz Dioses, a person with an amputation at the level of the middle third of the forearm, helping to carry out his activities of daily living. In conclusion, this bionic prosthesis is the functional prototype, being the beginning of a more advanced one, improving the mechanical system and including control with artificial intelligence. It is proposed to start in September 2021 to design and develop these improvements.
在秘鲁,5.2%的人口是运动障碍者。其中一些患有先天性畸形或前臂截肢的儿童在社会上难以进行日常生活活动。很多时候,他们选择使用美容假体,因为仿生假体非常昂贵。今天,由于3D打印技术的发展,我们有可能制造出经济实惠的仿生假肢。因此,这项创新研究于2019年至2020年在里卡多帕尔马大学机电工程学院的监督下进行,它是在数字系统实验室设计和开发的,产生了iROD,这是一种用于前臂中间三分之一水平截肢的仿生假肢,应用肌电图信号。此外,该设备使用干电极从前臂捕获肌电图信号,以提高患者的舒适度。为了开发,使用了人手的生物力学概念,其中SolidWorks用于机构,然后以3D方式打印,Eagle用于电气和电子系统,Arduino IDE用于控制系统。这个假肢是为Franz Dioses先生设计的,他在前臂中间三分之一的位置截肢,帮助他进行日常生活活动。总之,这个仿生假肢是功能原型,是更先进的假肢的开始,改进了机械系统,包括人工智能控制。建议从2021年9月开始设计和开发这些改进。
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引用次数: 11
Sliding Mode Control for a Conical Tank: Empirical vs. Coordinate Transformation Linearization Comparison 锥形油箱的滑模控制:经验与坐标变换线性化比较
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590771
Cristian Amaguaña, O. Camacho
In this document, two linearization techniques are applied to level control in a conical tank. Also, this control represents a significant challenge because of a constantly varying section with height and its nonlinearity, so many control schemes were carried out. To obtain the linear model for the conical tank, first technique is the empiric linearization from data of the process. The reaction curve method is used, and the characteristic parameters are obtained. Another method is the coordinate transformation in the system is decomposed into two nonlinear functions g(x) and q(v,x). Consequently, using both linearization procedures, a sliding mode controller is designed and applied to a conic tank to compare the performance obtained from each technique. The proposed controller shows robustness and rejects the disturbances better than the typical PID controller.
在本文中,两种线性化技术应用于锥形水箱的液位控制。此外,这种控制代表了一个重大的挑战,因为一个不断变化的高度和非线性截面,所以许多控制方案进行。为了得到锥形罐的线性模型,首先是对过程数据进行经验线性化。采用反应曲线法,得到了其特征参数。另一种方法是将系统中的坐标变换分解为两个非线性函数g(x)和q(v,x)。因此,使用这两种线性化方法,设计了滑模控制器并将其应用于圆锥罐,以比较每种技术获得的性能。该控制器具有较好的鲁棒性和抗扰性。
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引用次数: 0
Useful Details about Testing Protective Relays with Signals that Include Effects of Travelling Waves 关于用包含行波影响的信号测试保护继电器的有用细节
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590716
E. Sorrentino, Carlos Ferreiro, Eduardo Cabeza
This article shows useful details about testing protective relays with signals that include effects of travelling waves. Test signals were obtained from two electromagnetic transient programs: a) RSCAD for RTDS, which is a real-time tool; b) Matlab/Simulink, for off-line tests with an injector. Furthermore, test signals were obtained using two models for the faulted transmission line (Bergeron model and a frequency-dependent model). The tested relays were a travelling wave relay (SEL-T400L) and two distance relays (SEL-421 and Micom P545). The tests with RTDS were performed at the low-level interface of SEL relays, whereas the tests with the inj ector were performed at the usual voltage and current inputs of distance relays. In general, the results are useful to emphasize the need of contrasting the expected output signals with oscilloscope captured waveforms, because the expected output signals (as shown by injectors' interfaces) can be different than the real injected signals. Despite this fact, the observed behavior of tested relay functions can be considered adequate.
这篇文章展示了有关用包含行波影响的信号测试保护继电器的有用细节。测试信号由两个电磁瞬变程序获取:a) RTDS的RSCAD,是一个实时工具;b) Matlab/Simulink,用于使用注入器进行离线测试。此外,采用两种故障传输线模型(Bergeron模型和频率相关模型)获得测试信号。测试的继电器为一个行波继电器(SEL-T400L)和两个距离继电器(SEL-421和Micom P545)。使用RTDS的测试在SEL继电器的低电平接口进行,而使用喷射器的测试在距离继电器的常用电压和电流输入处进行。一般来说,这些结果有助于强调将预期输出信号与示波器捕获的波形进行对比的必要性,因为预期输出信号(如注入器接口所示)可能与实际注入信号不同。尽管如此,所测试的继电器功能的观察行为可以被认为是足够的。
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引用次数: 1
BeetleID: An Android Solution to Detect Ladybird Beetles BeetleID:一个检测瓢虫的Android解决方案
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590826
Ricardo Muriel, Noel Pérez, D. Benítez, Daniel Riofrío, G. Ramón, Emilia Peñaherrera, D. Cisneros-Heredia
In this work, an Android mobile application named BeetleID was developed to detect ladybird beetles through image pre-processing methods and a deep learning convolutional neural network model. The image pre-processing module consists of three main algorithms: saliency map, active contour, and superpixel segmentation. The used convolutional neural network was validated with a 2611 image set of ladybird beetle species with a five-fold cross-validation method. It achieved accuracy and area under the curve of the receiver operating characteristic scores of 0.92 and 0.98, respectively. Furthermore, the application's feasibility was assessed by the mean execution time and battery consumption metrics of mobile emulators, phone Pixel 3a XL and tablet Pixel C, which obtained 16.32 and 18.43 seconds 0.07 and 0.11 milliampere-hour, respectively. These results prove that the proposed application is an excellent solution, with a few optimization issues, for specialists to detect ladybird beetles in wildlife environments accurately.
本研究通过图像预处理方法和深度学习卷积神经网络模型,开发了一款名为BeetleID的Android手机应用程序来检测瓢虫。图像预处理模块包括三种主要算法:显著性映射、活动轮廓和超像素分割。用2611张瓢虫种类图像集对卷积神经网络进行了五重交叉验证。受试者工作特征评分的准确度为0.92,曲线下面积为0.98。此外,通过移动模拟器Pixel 3a XL和平板电脑Pixel C的平均执行时间和电池消耗指标来评估该应用程序的可行性,分别获得16.32和18.43秒0.07和0.11毫安小时。这些结果证明,所提出的应用程序是一个很好的解决方案,有一些优化问题,为专家准确地检测野生环境中的瓢虫。
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引用次数: 0
On the Monitoring of the Electromagnetic Fields Accompanying the Seismic and Volcanic Activity of the Chiles Volcano: Preliminary Results 智利火山地震和火山活动伴随电磁场的监测:初步结果
Pub Date : 2021-10-12 DOI: 10.1109/ETCM53643.2021.9590751
Daniel Cárdenas, D. Benítez, M. Ruiz, W. Enríquez, Paola Nazate, C. Ramos, Christian Espín, Verônica Soria
We implemented two prototype monitoring stations that would allow to measure electromagnetic field changes in a volcano due to eruptive processes, intending to improve the early warning system of Instituto Geofisico EPN in case of volcanic eruptions. The new stations are made of electromagnetic field sensors and innovative wireless technology with low power consumption. As a proof of concept, we monitored the magnetic field and seismic signals in the moderately active Chiles-Cerro Negro volcanic complex in Ecuador during a first survey in October 2020. Distinct anomalies in the magnetic field were observed in the geothermal areas in Chiles volcano when the seismic activity was high. Magnetic field variations and seismic activity were observed simultaneously and associated with each other, however further research is still needed in order to determine whether magnetic field variations can be associated to seismic signals and quantify this impact.
我们实施了两个原型监测站,可以测量火山爆发过程中电磁场的变化,旨在改善EPN地质研究所火山爆发时的预警系统。新车站由电磁场传感器和低功耗的创新无线技术组成。作为概念验证,我们在2020年10月的第一次调查中监测了厄瓜多尔中度活跃的Chiles-Cerro Negro火山复合体的磁场和地震信号。智利火山地热区在地震活动频繁时,磁场异常明显。磁场变化和地震活动是同时观察到的,并且相互关联,然而,为了确定磁场变化是否与地震信号有关并量化这种影响,还需要进一步的研究。
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引用次数: 1
期刊
2021 IEEE Fifth Ecuador Technical Chapters Meeting (ETCM)
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