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Pencak Silat Movement Classification Using CNN Based On Body Pose 基于身体姿势的CNN笔杆动作分类
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.369
Vira Nur Rahmawati, Eko Mulyanto Yuniarto, Supeno Mardi Susiki Nugroho
Pencak silat, besides from being useful for self-protection, also has many other benefits, such as increasing physical strength, maintaining posture, and maintaining heart health. Due to the recent pandemic, practicing pencak silat is difficult to do together. Even when there is study material on pencak silat at school, it is difficult for the sports teacher to teach the movements directly. Pencak silat exercises that are practiced alone without a coach can cause injury if the movements are not correct. Therefore, this study builds a system to recognize pencak silat movements. The system was built using the bodypose-based CNN method. Bodypose estimation is used to detect human body keypoints, then these keypoints are used as a feature for input to CNN to recognize movement in each frame. This system uses CNN because it requires fewer parameters and less computing power so that it can be more easily applied for further studies. The accuracy obtained reaches 77% when tested on data that has never been used. This model can be used as a starting point for creating an easy-to-use system to help people practice pencak silat with more recognizable moves.
除了对自我保护有用之外,茴香茶还有很多其他好处,比如增强体力、保持姿势和保持心脏健康。由于最近的大流行,练习铅笔silat很难一起做。即使学校里有关于铅笔的学习材料,体育老师也很难直接教授这些动作。如果在没有教练的情况下单独练习,如果动作不正确,可能会导致受伤。因此,本研究构建了一个识别笔芯运动的系统。该系统采用基于身体姿势的CNN方法构建。人体姿态估计用于检测人体关键点,然后将这些关键点作为特征输入到CNN中,以识别每一帧中的运动。这个系统使用CNN,因为它需要更少的参数和更少的计算能力,可以更容易地应用于进一步的研究。当对从未使用过的数据进行测试时,获得的准确性达到77%。这个模型可以作为创建一个易于使用的系统的起点,帮助人们用更容易识别的动作练习铅笔丝拉。
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引用次数: 0
Load Frequency Control by Quadratic Regulator Approach with Compensating Pole using SIMULINK 基于SIMULINK的带补偿极点的二次调节器负载频率控制
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.356
Zubair Saeed, Haseeb Ur Rehman, Abdul Haseeb, Rabia Taseen, Muhammad Shahzaib Shah, Inam Ul Hasan Shaikh, Muhammad Zulqarnain Haider Ali
In this research, for the load frequency control (LFC) challenge, we provide a few possible approaches to building an optimum PID controller. This scheme employs the Quadratic Regulator Approach with Compensating Pole (QRAWCP) approach. In both multi-area and single-area power systems, this control law is used to solve load frequency concerns. And the other scenario that is considerable, the controller's robustness is evaluated on the same systems in terms of non-linearities, external disturbances, and parametric uncertainty such as the Governor Dead Band (GDB) as well as the Generation Rate Constraint (GRC). The performance of the control method is evaluated using Simulink simulations.
在本研究中,针对负载频率控制(LFC)的挑战,我们提供了几种可能的方法来构建最优PID控制器。该方案采用带补偿极点的二次型调节器(QRAWCP)方法。在多区域和单区域电力系统中,该控制律都可以用来解决负荷频率问题。另一种相当可观的情况是,根据非线性、外部干扰和参数不确定性(如总督死区(GDB)和生成率约束(GRC)),在相同的系统上评估控制器的鲁棒性。通过Simulink仿真对该控制方法的性能进行了评价。
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引用次数: 0
A new lossless passive snubber with simple structure for pulse width modulation DC-DC converters 一种结构简单的新型无损无源缓冲器,用于脉宽调制DC-DC变换器
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.358
Mahmood Vesali
A new lossless passive snubber for pulse width modulation converters is introduced in this paper. This snubber is established zero current switching condition for main switch in the converters for turning on distance. This snubber does not impose any additional current stress on the switch. The snubber can be applied to all single-switch DC-DC converters. A boost converter with the proposed snubber is analyzed and to verify theoretical analysis a 200 W sample is implemented and tested, also the experimental results are presented. In order to investigate the effect of snubber circuit in the converter in terms of efficiency, the boost converter with the proposed snubber has been compared in terms of efficiency with the conventional boost converter and the results show that the efficiency has increased by about 7% despite the snubber.
介绍了一种用于脉宽调制变换器的新型无损无源缓冲器。该缓冲器为变流器主开关的开断距离建立了零电流开关条件。这种缓冲器不会对开关施加任何额外的电流压力。缓冲器可应用于所有单开关DC-DC转换器。为了验证理论分析的正确性,对一个200w的升压变换器进行了仿真和测试,并给出了实验结果。为了研究缓冲器电路对变换器效率的影响,将采用该缓冲器的升压变换器与传统升压变换器的效率进行了比较,结果表明,尽管有缓冲器,但效率提高了约7%。
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引用次数: 0
Prosumer-Based Optimization of Educational Building Grid Connected with Plug-in Electric Vehicle Integration using Modified Firefly Algorithm 基于改进萤火虫算法的插电式电动车集成教育建筑电网产消优化
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.350
Yusdiar Sandy, Ardyono Priyadi, Vita Lystianingrum
Educational buildings have the potential to support government programs in efforts to reduce carbon emissions. Installing photovoltaics and providing charging stations can reduce the use of fossil fuels and increase the number of electric vehicle users. This paper aims to optimize educational buildings when implementing a prosumer scheme and integrating Plug-in Electric Vehicles (PEV) to meet building electricity demands. Optimization is carried out through two case studies, namely the application of a prosumer scheme with independent photovoltaic generators with and without PEV integration. The optimization process uses the Modified Firefly Algorithm. The results obtained by applying the prosumer scheme to educational buildings, the two case studies can produce LCOE cheaper than just buying electricity from the grid. Optimizing results show that photovoltaic installation and charging stations in educational buildings can be beneficial when implementing a prosumer scheme.
教育建筑具有支持政府减少碳排放项目的潜力。安装光伏和提供充电站可以减少化石燃料的使用,增加电动汽车用户的数量。本文旨在通过实施产消方案和集成插电式电动汽车(PEV)来优化教育建筑,以满足建筑的电力需求。优化是通过两个案例研究进行的,即一个产消方案的应用,独立的光伏发电机有和没有PEV集成。优化过程采用改进的萤火虫算法。通过将产消方案应用于教育建筑获得的结果,这两个案例研究可以产生比仅仅从电网购买电力更便宜的LCOE。优化结果表明,在实施产消方案时,在教育建筑中安装光伏和充电站是有益的。
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引用次数: 0
Deep Neural Network for Visual Localization of Autonomous Car in ITS Campus Environment 基于深度神经网络的ITS校园环境下自动驾驶汽车视觉定位
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.365
Rudy Dikairono, Hendra Kusuma, Arnold Prajna
Intelligent Car (I-Car) ITS is an autonomous car prototype where one of the main localization methods is obtained through reading GPS data. However the accuracy of GPS readings is influenced by the availability of the information from GPS satellites, in which it often depends on the conditions of the place at that time, such as weather or atmospheric conditions, signal blockage, and density of a land. In this paper we propose the solution to overcome the unavailability of GPS localization information based on the omnidirectional camera visual data through environmental recognition around the ITS campus using Deep Neural Network. The process of recognition is to take GPS coordinate data to be used as an output reference point when the omnidirectional camera takes images of the surrounding environment. Visual localization trials were carried out in the ITS environment with a total of 200 GPS coordinates, where each GPS coordinate represents one class so that there are 200 classes for classification. Each coordinate/class has 96 training images. This condition is achieved for a vehicle speed of 20 km/h, with an image acquisition speed of 30 fps from the omnidirectional camera. By using AlexNet architecture, the result of visual localization accuracy is 49-54%. The test results were obtained by using a learning rate parameter of 0.00001, data augmentation, and the Drop Out technique to prevent overfitting and improve accuracy stability.
智能汽车(I-Car) ITS是一种自动驾驶汽车原型,其主要定位方法之一是通过读取GPS数据获得。然而,GPS读数的准确性受到来自GPS卫星信息的可用性的影响,这通常取决于当时的地点条件,例如天气或大气条件、信号阻塞和土地密度。本文提出了一种基于全向摄像头视觉数据的GPS定位信息不可用的解决方案,并利用深度神经网络对ITS校园周边环境进行识别。识别的过程是将GPS坐标数据作为全向相机拍摄周围环境图像时的输出参考点。在ITS环境下进行视觉定位试验,总共有200个GPS坐标,其中每个GPS坐标代表一个类别,这样就有200个类别可供分类。每个坐标/类有96个训练图像。这一条件是在车速为20公里/小时,全向相机图像采集速度为30帧/秒的情况下实现的。采用AlexNet体系结构,视觉定位精度达到49% ~ 54%。采用学习率参数为0.00001,数据增强,Drop Out技术防止过拟合,提高精度稳定性,得到测试结果。
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引用次数: 0
Temperature and Humidity Control System for 20 kV of Cubicle with Multiple Input Multiple Output Fuzzy Logic Controller 采用多输入多输出模糊控制器的20kv机房温湿度控制系统
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.367
Mochammad Berliano Putra Ramadhan, Moh. Zaenal Efendi, Syechu Dwitya Nugraha
Cubicle 20 kV is a crucial electrical equipment in the 20 kV power distribution system. Often, cubicle issues arise due to excessively low or high temperatures and humidity, which can lead to the presence of water spots and corrosion on the components inside the 20 kV cubicle. One of the efforts to maintain the reliability of this 20 kV cubicle is to ensure that the temperature and humidity inside the cubicle remain within their operational limits. To achieve this, a system is needed to control the temperature and humidity in the 20 kV cubicle. The system can monitor and control the temperature and humidity inside the cubicle by adjusting the activation angle of the exhaust fan and heater. Control is achieved using a multiple-input, multiple-output fuzzy logic controller. The main components of this system are the STM32 microcontroller, DHT22 sensor, and ESP8266 module for monitoring temperature and humidity via a website. System has successfully controlled temperature and humidity d with a set point value of 35 °C and humidity of 60% RH. This implementation of fuzzy multiple input multiple outputs has performed well and resulted in only a small error of 0.55% for temperature and 1.05% for humidity.With the presence of this device, the temperature and humidity in the cubicle 20 kV can be controlled, and it enables the PLN operator to easily monitor and maintain the cubicle 20 kV.
20kv配电箱是20kv配电系统中至关重要的电气设备。通常情况下,由于温度和湿度过低或过高,会导致20kv机柜内的组件出现水斑和腐蚀,从而引起机柜问题。保持这个20 kV隔间可靠性的努力之一是确保隔间内的温度和湿度保持在其操作范围内。为了实现这一目标,需要一个系统来控制20kv隔间内的温度和湿度。该系统通过调节排风机和加热器的启动角度,对机房内的温湿度进行监测和控制。控制是通过一个多输入、多输出的模糊逻辑控制器实现的。该系统的主要组成部分是STM32单片机、DHT22传感器和ESP8266模块,通过网站监测温度和湿度。系统成功控制温度和湿度d,设定点为35℃,湿度为60% RH。这种模糊多输入多输出的实现效果良好,对温度的误差仅为0.55%,对湿度的误差为1.05%。有了该装置,可以控制20 kV隔间内的温度和湿度,使PLN操作员能够轻松监控和维护20 kV隔间。
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引用次数: 0
Perspective Transformation Automation In Identification Of Parking Lot Status With Blob Detection 基于斑点检测的停车场状态识别中的视角变换自动化
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.364
Mohammad Nasrul Mubin, Hendra Kusuma, Muhammad Rivai
Implementation of automation greatly facilitates the work of a system. This research automates the search for perspective transformation coordinates. In previous study, the process was done manually and was considered time-consuming and costly. The search for these coordinates is carried out with the help of red circles at several points in the parking area to be identified. There are two cases of images to be automated, namely the image of the parking area without obstacles and with obstacles. In the unobstructed images, the identification of transformation coordinates is carried out by identifying the coordinates of the auxiliary circle. Whereas in the images with obstructions, the identification of the transformation coordinates also involves the intersection equations of lines. The process of identifying the coordinates is done with the condition of the parking lot without a single vehicle. Once the coordinates are obtained, all coordinates are stored and will be used in the perspective transformation process in status parking slot identification stage. The identification stage is same with previous study. The proposed system 100% able to identify the transformation coordinates and carry out the perspective transformation process as expected. Of the 900 samples in each case, we acquire 100% recall, and most of the parking slot identification status being above 85% precision and accuracy. Compared to previous studies, the proposed system is more effective, with recall, precision, and accuracy values at 100%. The effectiveness of the proposed system is even more evident with average data automation time is 31.689 seconds.
自动化的实现大大方便了系统的工作。该研究实现了透视变换坐标搜索的自动化。在以前的研究中,该过程是手工完成的,并且被认为是耗时且昂贵的。这些坐标的搜索是在停车区域的几个待识别点的红色圆圈的帮助下进行的。需要自动化的图像有两种情况,即无障碍物停车区域图像和有障碍物停车区域图像。在无遮挡图像中,通过识别辅助圆的坐标来进行变换坐标的识别。而在有障碍物的图像中,变换坐标的识别还涉及到直线的相交方程。确定坐标的过程是根据停车场的情况完成的,没有一辆车。获得坐标后,将所有坐标存储起来,用于状态泊位识别阶段的透视变换过程。识别阶段与之前的研究相同。所提出的系统100%能够识别转换坐标并按预期进行透视图转换过程。在每种情况下的900个样本中,我们获得了100%的召回率,大多数停车位识别状态的精度和准确度都在85%以上。与以往的研究相比,本文提出的系统更有效,召回率、精度和准确率均达到100%。该系统的平均数据自动化时间为31.689秒,其有效性更加明显。
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引用次数: 0
Evaluation Of Digital Wavelet Filter On Low Voltage Arcing Detection Equipment 数字小波滤波器在低压电弧检测设备中的应用评价
Pub Date : 2023-07-31 DOI: 10.12962/jaree.v7i2.311
Anton Putra Widyatama, Dimas Anton Asfani
Arcing is one of the causes of fire disasters that occur quite a lot in the world. The danger of arcing causes enormous losses. The fault current caused by arcing usually occurs in a very short duration, so that safety equipment such as Miniature Circuit Breaker (MCB) and Fuse cannot detect the disturbance. If arcing takes place continuously, there will be heat that can damage the equipment and cause a fire. In this study, an evaluation of the use of mother wavelets in the Discrete Wavelet Transform (DWT) method on low voltage detection equipment will be carried out. DWT is a mathematical function that is the most successful in the field of signal processing. Signal processing using the DWT method will be analyzed and compared its performance with mother wavelets Daubechies-1, Daubechies-4, Coiflet-4, and Symlet-4. Then applied to low voltage arcing detection equipment. From the results of testing and analysis obtained the mother wavelet Daubechies-4 produces a high level of accuracy and sensitivity. Mother wavelet Coiflet-4 and Symlet-4 produce the lowest level of accuracy at 400W and 700W load. Meanwhile, on the mother wavelet Daubechies-1, the normal signal amplitude value is close to the arcing signal amplitude value, so it will be difficult to determine the threshold value. In this study, the results obtained are arcing detection equipment using the mother wavelet Daubechies-4 method can detect arcing disturbances very well and produces a high level of accuracy and sensitivity compared to the mother wavelet Daubechies-1, Coiflet-4 , and Symlet-4.
电弧是世界范围内发生较多火灾的原因之一。电弧的危险造成巨大的损失。电弧引起的故障电流通常持续时间很短,因此微型断路器和熔断器等安全设备无法检测到扰动。如果电弧持续发生,就会产生热量,损坏设备并引起火灾。在本研究中,将对离散小波变换(DWT)方法中母小波在低压检测设备上的使用进行评估。DWT是信号处理领域中最成功的一种数学函数。使用小波变换的信号处理方法将与母小波Daubechies-1、Daubechies-4、Coiflet-4和Symlet-4进行分析和比较。然后应用于低压电弧检测设备。从测试和分析结果中得到的母小波Daubechies-4产生的精度和灵敏度都很高。母小波Coiflet-4和Symlet-4在400W和700W负载下产生最低的精度水平。同时,在母小波Daubechies-1上,正常信号的幅值与电弧信号的幅值接近,因此难以确定阈值。本研究结果表明,与母小波Daubechies-1、Coiflet-4和Symlet-4相比,采用母小波Daubechies-4方法的电弧检测设备可以很好地检测电弧干扰,并且具有较高的精度和灵敏度。
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引用次数: 0
A Review: Cybersecurity Challenges and their Solutions in Connected and Autonomous Vehicles (CAVs) 回顾:网联和自动驾驶汽车(cav)的网络安全挑战及其解决方案
Pub Date : 2023-01-31 DOI: 10.12962/jaree.v7i1.322
Zubair Saeed, Mubashir Masood, Misha Urooj Khan
Connected and Autonomous Vehicles (CAVs) are a crucial breakthrough in the automotive industry and a magnificent step toward a safe, secure, and intelligent transportation system (ITS). CAVs offer tremendous benefits to our society and environment, such as mitigation of traffic accidents, reduction in traffic congestion, fewer emissions of harmful gases, etc. However, emerging automotive technology also has some serious safety concerns. One of them is cyber security. Conventional vehicles are less prone to cyber-attacks, but CAVs are more susceptible to such events as they communicate with the surrounding infrastructure and other vehicles. To gather data for a better perception of their surroundings, CAVs are outfitted with state-of-the-art sensors and modules like LiDAR, GPS, RADAR, onboard computers, cameras, etc. Hackers, terrorist organizations, and vandals can manipulate this sensor data or may access the primary control by cyber-attack, which may result in enormous fatalities. The automotive industry must put up a rigid framework against cyber invasions to make CAVs a more reliable and secure means of transportation. This paper provides an overview of cybersecurity challenges in CAVs at the module and software levels. The sources of active and passive threats are analyzed. Finally, a feasible solution is recommended to cope with such threats
联网和自动驾驶汽车(cav)是汽车行业的一项重大突破,也是迈向安全、可靠和智能交通系统(ITS)的重要一步。自动驾驶汽车为我们的社会和环境带来了巨大的好处,例如减少交通事故,减少交通拥堵,减少有害气体的排放等。然而,新兴的汽车技术也存在一些严重的安全问题。其中之一就是网络安全。传统车辆不太容易受到网络攻击,但自动驾驶汽车更容易受到网络攻击,因为它们与周围的基础设施和其他车辆进行通信。为了收集数据以更好地感知周围环境,自动驾驶汽车配备了最先进的传感器和模块,如激光雷达、GPS、雷达、车载计算机、摄像头等。黑客、恐怖组织和破坏者可以操纵这些传感器数据,也可以通过网络攻击访问主要控制,这可能导致巨大的死亡。为了让自动驾驶汽车成为更可靠、更安全的交通工具,汽车行业必须建立一个严格的网络入侵框架。本文概述了自动驾驶汽车在模块和软件层面面临的网络安全挑战。分析了主动威胁和被动威胁的来源。最后,提出了一种可行的解决方案来应对这些威胁
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引用次数: 0
Comparative Performance of Various Wavelet Transformation for the Detection of Normal and Arrhythmia ECG Signal 不同小波变换检测正常和心律失常心电信号的性能比较
Pub Date : 2023-01-31 DOI: 10.12962/jaree.v7i1.343
Mu'thiana Gusnam, Hendra Kusuma, Tri Arief Sardjono
Cardiac Activity forms a signal of electrical potential waves in the heart that can be recorded using an Electrocardiogram (ECG). The results of the ECG signal can determine the conditions and abnormalities experienced by the heart, such as arrhythmias. Medical personnel diagnoses normal and arrhythmia heart conditions by looking at R peaks and R-R interval features. Normal conditions have regular R peaks and R-R intervals, whereas arrhythmias are irregular. The challenges in diagnosing ECG signals are that sometimes the signal has some noises that need reducing noise (denoising) are not required in the signal so it can be easier to detect abnormalities. This paper is a brief study of the comparison of the best performance in detecting ECG signals using various wavelet transforms and optimal threshold values based on empirical methods to obtain R peaks and R-R interval features. Wavelet transform describes the signals that can compress the ECG signal and reduce noise without losing important clinical information that can be achieved by medical personnel. The wavelet transform is suitable for approaching data with a discontinuity signal, so the frequency component will increase if noise or anomalies occur in the ECG signal. The various wavelet transforms used Daubechies (db4), Symlets (sym4), Coiflets (coif4), and Biorthogonal (bior3.7) with four types of Detail and Approximate levels; they are Level 1, 2, 3, and 4. The comparison result for the best performance of the various wavelet transforms is using Daubechies wavelet, and biorthogonal wavelet with an accuracy percentage of 100% at level 2 for diagnosing arrhythmia and 93.1% at level 1 for normal diagnosis from 31 data for arrhythmia and 18 for Normal sourced of the MIT-BIH Database. Hence, the total accuracy results obtained from all the data tested is 96.55%.
心脏活动在心脏中形成一种可以用心电图(ECG)记录的电位波信号。心电图信号的结果可以确定心脏所经历的状况和异常,如心律失常。医务人员通过观察R峰和R-R间隔特征来诊断正常和心律失常的心脏状况。正常情况下有规则的R峰和R-R间隔,而心律失常是不规则的。心电信号诊断的挑战在于,有时信号中含有一些不需要去噪的噪声,因此更容易发现异常。本文简要研究了各种小波变换在心电信号检测中的最佳性能,以及基于经验方法的最优阈值,以获得R峰和R-R区间特征。小波变换所描述的信号既能压缩心电信号,又能在不丢失重要临床信息的前提下降低噪声,从而达到医务人员的目的。小波变换适合于处理具有不连续信号的数据,因此当心电信号中出现噪声或异常时,其频率分量会增大。各种小波变换使用四种类型的细节和近似水平的Daubechies (db4), Symlets (sym4), Coiflets (coif4)和Biorthogonal (bior3.7);分别是1级、2级、3级和4级。各种小波变换的最佳性能比较结果是使用Daubechies小波和双正交小波,在诊断心律失常的2级准确率为100%,正常诊断的1级准确率为93.1%,来自MIT-BIH数据库的31个心律失常数据和18个正常数据。因此,从所有测试数据中获得的总准确率为96.55%。
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引用次数: 0
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JAREE Journal on Advanced Research in Electrical Engineering
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