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2021 17th International Conference on Quality in Research (QIR): International Symposium on Electrical and Computer Engineering最新文献

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Design of Cross and Square Slot with Beamforming for Microstrip Reflectarray Antenna at 28 GHz 28 GHz微带反射天线十字槽和方槽波束形成设计
A. Ramadhani, A. Firdausi, Umaisaroh Umaisaroh, M. Alaydrus
The improvement of wireless communication is in line with the need for data transfer speed. The requirement of high capacity, big coverage, low energy consumption, and affordable equipment is urgently need. A high gain microstrip antenna is required. One of the suitable designs is using reflectarray antenna. Reflectarray has been researched to arrange the phase distribution by adjusting the unit cell elements. Moreover, by applying beamforming technique, the focusing beam direction of the antenna can be improved. This paper aims a design of a reflectarray antenna with beamforming that for 28 GHz frequency. The reflectarray antenna unit cell model consists of a square patch with cross and square slot. A complete reflectarray consisting of $7 times 7$ unit cells is simulated with a horn antenna feed. The simulation results show a gain of 19.33 dB with a power shift about 6 dB when compared to the measurement results. For the beamforming direction in the horizontal and vertical radiation pattern, a shift of about 6° is seen. If the beamforming simulation results are seen at a position of 24°, then the beamforming measurement results are at a position of 30°.
无线通信的改进符合对数据传输速度的需求。迫切需要高容量、大覆盖、低能耗、价格合理的设备。需要高增益微带天线。其中一种合适的设计是使用反射天线。研究了反射天线通过调整单元元来调整相位分布的方法。此外,采用波束形成技术可以改善天线的聚焦波束方向。本文旨在设计一种28ghz频率的波束形成反射天线。反射天线单元格模型由带十字的方形贴片和方形缝隙组成。用喇叭天线馈源模拟了由$7 × 7$单元组成的完整反射阵。仿真结果表明,与测量结果相比,增益为19.33 dB,功率漂移约6 dB。对于水平和垂直辐射方向的波束形成方向,可以看到大约6°的偏移。如果在24°位置看到波束形成仿真结果,则在30°位置看到波束形成测量结果。
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引用次数: 0
Comparison of MLP-BPNN and MLP-PSO for Automatic Essay Grading System for Japanese Language Exam 日语考试作文自动评分系统中MLP-BPNN与MLP-PSO的比较
Farhan P. Putra, Prima Dewi Purnamasari, A. A. P. Ratna, Lea Santiar
In this paper, a study was conducted for a hybrid model for Multilayer Perceptron (MLP) with Particle Swarm optimization (PSO). The PSO was used to replace the Backpropagation method for the weight optimization. The comparison was conducted between MLP-BPNN and MLPPSO for an automated essay grading system for Japanese language exam. The MLP-PSO model achieved a more accurate but less stable result. The MLP-PSO model with 10 particles trained for 15 steps achieves the best result out of the two MLP-PSO models tested, with an average 8.48% error for the grade population. Compared to the MLP-PSO model, it was discovered that MLP-BPNN with Adam optimizer achieves better overall performance and results concerning both the accuracy and the stability of the model.
本文研究了多层感知器(MLP)与粒子群优化(PSO)的混合模型。采用粒子群算法代替反向传播法进行权值优化。将MLP-BPNN和MLPPSO用于日语考试作文自动评分系统进行了比较。MLP-PSO模型获得了更精确但稳定性较差的结果。在测试的两个MLP-PSO模型中,经过15步训练的10个粒子的MLP-PSO模型获得了最好的结果,对等级总体的平均误差为8.48%。与MLP-PSO模型相比,使用Adam优化器的MLP-BPNN在模型的精度和稳定性方面都取得了更好的综合性能和结果。
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引用次数: 1
Substrate Bias Effect on SOI-based Thermoelectric Power Generator soi基热电发电机的衬底偏置效应
H. Inokawa, Yuto Goi, Toshiaki Yorigami, Kyohei Shirotori, H. Satoh, M. Tomita, T. Matsuki, H. Ikeda, Takanobu Watanabe
Thermoelectric characteristics of phosphorus-doped silicon (Si) nanowire (NW) are evaluated in terms of the substrate bias effect. It is found that the narrower wire is more sensitive to the substrate voltage presumably due to the field crowding effect. In case of 200-nm-wide NW, application of 40 V to the substrate increases the NW conductance by a factor of 55.4, and leads to × 25.9 improvement in power generation, even though the Seebeck coefficient is reduced to 74%. The result suggests that the performance of the Si thermoelectric generator could be improved or optimized by the substrate bias control.
根据衬底偏置效应对掺磷硅纳米线的热电特性进行了评价。研究发现,较窄的导线对衬底电压更敏感,这可能是由于场拥挤效应。在200纳米宽NW的情况下,在衬底上施加40 V使NW电导增加55.4倍,即使塞贝克系数降低到74%,发电量也会提高× 25.9。结果表明,通过衬底偏压控制可以改善或优化硅热电发生器的性能。
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引用次数: 0
Automatic Physiognomy System using Active Appearance Model and Convolutional Neural Network 基于主动外观模型和卷积神经网络的自动面相系统
D. Sudiana, M. Rizkinia, Ilham Mulya Rafid
This research discusses the design and development of an automatic physiognomy system to determine a person’s tendencies based on the features of its face. Physiognomy itself is a method of predicting a person’s characteristics based on their facial features. Each facial feature has its uniqueness and characteristics, such as variations in distance, overall shape, and size. The facial image as input data is processed in every system step. Finally, the system displays the personality of that person. Simulations show that each algorithm can perform its respective functions well. The simulation results show that the combination of extracting facial features using the Active Appearance Model and Convolutional Neural Network for solving classification problems produces a very good number of personality traits predictions with each model accuracy value between 0.8 to 1, or 0.8797 on average. In addition, the model made proved to produce a good performance for the classification process with a true positive rate between 0.8834 to 1, or 0.9417 on average. This method can also detect many personality traits, with 28 personality traits that can be detected.
本研究讨论了一个自动面相系统的设计和开发,以确定一个人的倾向基于其面部特征。面相学本身是一种根据面部特征预测一个人特征的方法。每个面部特征都有其独特性和特征,例如距离、整体形状和大小的变化。面部图像作为输入数据在系统的每个步骤中进行处理。最后,系统显示该人的个性。仿真结果表明,每种算法都能很好地完成各自的功能。仿真结果表明,将主动外观模型与卷积神经网络相结合进行人脸特征提取,求解分类问题,得到了非常好的人格特征预测结果,每个模型的准确率在0.8 ~ 1之间,平均准确率为0.8797。此外,所建立的模型对分类过程具有良好的性能,其真阳性率在0.8834 ~ 1之间,平均为0.9417。这种方法还可以检测到许多性格特征,可以检测到28种性格特征。
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引用次数: 1
[QIR 2021 Front cover] [QIR 2021封面]
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引用次数: 0
Investigation on Simulation-Based Octagonal Ring MIMO Antenna for 5G Applications 基于仿真的5G八角环形MIMO天线研究
Y. Rahayu, As Ibrahim
The fifth-generation (5G) communication shows the progress of the entire cellular network architecture. Indonesia has just launched the first 5G network on May 21, 2021, as a tangible manifestation of the leading digital telecommunication. The 5G band allocation used for the first deployment is in the medium frequency band (2-6 GHz). In this paper, the 5G high-frequency band (beyond 6 GHz) is used to design a MIMO antenna for future deployment. The MIMO antenna is designed for 5G applications working at a frequency of 38 GHz. This allocated frequency was also recommended by the Federal Communications Commission (FCC). The antenna was designed by using a patch in the form of an octagon ring with microstrip line feeding. MIMO technique is used to increase system capacity with a gain value above 10 dBi. Antenna MIMO is designed using a material substrate RT Duroid 5880 with $varepsilon r$ = 2.2, thickness (h) = 0.254 mm, and tan $delta = 0.0009$. From the simulation, the S11 reached -29.5 dB, a gain of 13.44 dBi, mutual coupling below -20 dB, and bandwidth of 14.002 GHz (31.008 GHz to 45.01 GHz).
第五代(5G)通信展示了整个蜂窝网络架构的进步。印度尼西亚刚刚于2021年5月21日启动了第一个5G网络,作为领先数字电信的有形体现。首次部署使用的5G频段分配为中频(2 ~ 6ghz)。本文利用5G高频频段(6ghz以上)设计MIMO天线,以备未来部署。MIMO天线是为工作频率为38 GHz的5G应用而设计的。这种分配频率也是联邦通信委员会(FCC)推荐的。天线采用带微带馈线的八角形贴片设计。MIMO技术用于增加系统容量,增益值在10dbi以上。天线MIMO采用$varepsilon r$ = 2.2,厚度(h) = 0.254 mm, tan $delta = 0.0009$的材料衬底RT Duroid 5880设计。仿真结果表明,S11达到-29.5 dB,增益为13.44 dBi,互耦低于-20 dB,带宽为14.002 GHz (31.008 GHz ~ 45.01 GHz)。
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引用次数: 0
Multi Sensing on Bearing Faults Detection with Internet of Things (IoT) based 基于物联网的多传感轴承故障检测
Isla Madinah Hakim, Zaqiatud Darojah, Eny Kusumawati, E. S. Ningrum
Bearing is a machine part that has a function to keep the shaft always rotating or moving linearly to the axis of the shaft and its path. Bearings are often found in automotive equipment and home appliances, one of them is the bearing that has found in a single-phase induction motor (water pump). But, until now the largest percentage of induction motor faults occurs in bearings. Therefore, an accurate system of bearing faults detection is the key to protecting an induction motor from such any faults. In this study, we proposed bearing faults detection on a single-phase induction motor with water loads and based on Internet of Things (IoT). This system used multi-sensors, i.e. a temperature sensor, a current sensor, and a vibration sensor. Some processes in this bearing faults detection system are feature extraction process using Empirical Mode Decomposition (EMD) and pattern recognition process using Backpropagation Neural Network (BNN). Then the results from pattern recognition is displayed through the Internet of Things (IoT) system. The results of this project show that EMD can decompose the vibration signal and BNN is able to classify signals with 100% accuracy of current signals and 98% for vibration signals.
轴承是一种机器部件,它具有保持轴始终旋转或沿轴及其路径直线移动的功能。轴承经常出现在汽车设备和家用电器中,其中之一是在单相感应电动机(水泵)中发现的轴承。但是,到目前为止,感应电动机故障的最大百分比发生在轴承上。因此,一个准确的轴承故障检测系统是保护异步电动机免受此类故障的关键。在本研究中,我们提出了一种基于物联网(IoT)的单相感应电动机轴承故障检测方法。该系统采用多传感器,即温度传感器、电流传感器和振动传感器。该轴承故障检测系统包括基于经验模态分解(EMD)的特征提取过程和基于反向传播神经网络(BNN)的模式识别过程。然后将模式识别的结果通过物联网系统显示出来。本课题的研究结果表明,EMD可以对振动信号进行分解,BNN对电流信号的分类准确率为100%,对振动信号的分类准确率为98%。
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引用次数: 1
Implementation and Evaluation for Monitoring System in Electrical Meter based on LoRaWAN Network 基于LoRaWAN网络的电表监控系统的实现与评价
A. F. Fauzi, I. G. D. Nugraha
AMI has been one of the leading technologies for Smart Grid. AMI utilized various network technologies to enable two-way communication for Smart Grid. AMI also enables real-time measurement that collects the electricity data from the user. This study utilizes LoRaWAN for the AMI and collects the electricity data. We focus on developing the web dashboard that visualizes the data from the LoRaWAN based AMI network. In addition, we utilize the anomaly detection module to analyze the collected data. From our experiment, we conduct pre-process for converting the LoRaWAN data. The result shows that the converted data is similar to actual data, and the accuracy of anomaly detection is 89%
AMI已经成为智能电网的主要技术之一。AMI利用各种网络技术实现智能电网的双向通信。AMI还支持从用户那里收集电力数据的实时测量。本研究利用LoRaWAN进行AMI,并收集电数据。我们专注于开发web仪表板,使基于LoRaWAN的AMI网络的数据可视化。此外,我们还利用异常检测模块对采集到的数据进行分析。从我们的实验中,我们进行了转换LoRaWAN数据的预处理。结果表明,转换后的数据与实际数据接近,异常检测准确率达到89%
{"title":"Implementation and Evaluation for Monitoring System in Electrical Meter based on LoRaWAN Network","authors":"A. F. Fauzi, I. G. D. Nugraha","doi":"10.1109/QIR54354.2021.9716177","DOIUrl":"https://doi.org/10.1109/QIR54354.2021.9716177","url":null,"abstract":"AMI has been one of the leading technologies for Smart Grid. AMI utilized various network technologies to enable two-way communication for Smart Grid. AMI also enables real-time measurement that collects the electricity data from the user. This study utilizes LoRaWAN for the AMI and collects the electricity data. We focus on developing the web dashboard that visualizes the data from the LoRaWAN based AMI network. In addition, we utilize the anomaly detection module to analyze the collected data. From our experiment, we conduct pre-process for converting the LoRaWAN data. The result shows that the converted data is similar to actual data, and the accuracy of anomaly detection is 89%","PeriodicalId":446396,"journal":{"name":"2021 17th International Conference on Quality in Research (QIR): International Symposium on Electrical and Computer Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121567689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Effect of CuSCN Concentration Variations in Activated Carbon Electrode on the Perovskite Solar Cells Performance 活性炭电极中CuSCN浓度变化对钙钛矿太阳能电池性能的影响
Elang Barruna, J. Sulistianto, N. R. Poespawati
Perovskite solar cells called fourth-generation photovoltaic technology have developed rapidly because of their outstanding efficiency and low-temperature manufacturing process. One of the layers used in perovskite-based solar cells is the counter electrode. Activated carbon is one type of carbon that has the potential to replace metal as an electrode material due to its good chemical stability, high electrical conductivity, low cost, and abundance. Apart from that, CuSCN is a famous hole transport material because of its wide bandgap, good stability, and high hole mobility. Many studies have tried to combine the electrode material with hole transfer material in an effort to improve the device performance. This paper presents an investigation of the perovskite solar cell device performance with CuSCN-incorporated carbon electrodes. Concentration variations of CuSCN in carbon electrodes were carried out with values of 0.5%, 1%, and 2%. Different levels of CuSCN concentration in carbon electrodes resulted in different properties and performance of the device. Adding CuSCN with a concentration of 1% in carbon electrode yielded the best device performance with an efficiency of 0.0035%, fill factor of 0.32, $mathrm{I}_{mathrm{s}mathrm{c}}$ of 0.11 mA, and $mathrm{V}_{mathrm{o}mathrm{c}}$ of 0.14 V. Correctly combining the carbon material with hole transport material served a better the energy level alignment and hole transport properties.
被称为第四代光伏技术的钙钛矿太阳能电池因其卓越的效率和低温制造工艺而迅速发展。钙钛矿基太阳能电池中使用的一层是对电极。活性炭是一种有潜力取代金属作为电极材料的碳,因为它具有良好的化学稳定性、高导电性、低成本和丰度。此外,CuSCN具有宽的带隙、良好的稳定性和高的空穴迁移率,是一种著名的空穴迁移材料。许多研究试图将电极材料与空穴转移材料相结合,以提高器件的性能。本文研究了含cuscn碳电极的钙钛矿太阳能电池器件的性能。碳电极中CuSCN的浓度变化分别为0.5%、1%和2%。碳电极中CuSCN浓度的不同会导致器件性能的不同。在碳电极中添加浓度为1%的CuSCN,器件效率为0.0035%,填充系数为0.32,$ mathm {I}_{ mathm {s}} mathm {c}}$为0.11 mA, $ mathm {V}_{ mathm {o}} mathm {c}}$为0.14 V。正确地将碳材料与空穴输运材料组合在一起,可以获得更好的能级排列和空穴输运性能。
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引用次数: 1
Obstacle Awareness System of An Indoor UAV with Multi-Sensor Fusion Algorithm 基于多传感器融合算法的室内无人机障碍物感知系统
Lisa Kristiana, Nurjana Ariffilah Idris, A. Manurung, A. Darlis, Irma Amelia Dewi, Lita Lidyawati
A Flying Ad-hoc network (FANET) emerges recently due to its flexibility in terms of flying tracks and movements. As one type of Unmanned Aerial Vehicles (UAVs), a drone can be considered as the low-cost platform to implement the FANET. In a particular case, the flying tracks and movements of a drone can encounter inevitable obstacles such as building construction and any random objects. Thus, this paper focused on the obstacle issue in drone’s movements and proposed the feasibility of Sensor Fusion algorithm to distinguish the obstacle in the indoor environment. Under two conditions: single and multiple obstacles scenarios, the autonomous drone implementing Kalman Filter in Sensor Fusion experienced the real time response linearly as the distance increases.
一种飞行自组织网络(FANET)由于其在飞行轨迹和运动方面的灵活性而最近出现。无人机作为无人机的一种,可以被认为是实现FANET的低成本平台。在特殊情况下,无人机的飞行轨迹和运动可能会遇到不可避免的障碍,如建筑施工和任何随机物体。因此,本文针对无人机运动中的障碍物问题,提出了传感器融合算法在室内环境中识别障碍物的可行性。在单障碍物和多障碍物两种情况下,在传感器融合中实现卡尔曼滤波的自主无人机的实时响应随距离的增加呈线性变化。
{"title":"Obstacle Awareness System of An Indoor UAV with Multi-Sensor Fusion Algorithm","authors":"Lisa Kristiana, Nurjana Ariffilah Idris, A. Manurung, A. Darlis, Irma Amelia Dewi, Lita Lidyawati","doi":"10.1109/QIR54354.2021.9716178","DOIUrl":"https://doi.org/10.1109/QIR54354.2021.9716178","url":null,"abstract":"A Flying Ad-hoc network (FANET) emerges recently due to its flexibility in terms of flying tracks and movements. As one type of Unmanned Aerial Vehicles (UAVs), a drone can be considered as the low-cost platform to implement the FANET. In a particular case, the flying tracks and movements of a drone can encounter inevitable obstacles such as building construction and any random objects. Thus, this paper focused on the obstacle issue in drone’s movements and proposed the feasibility of Sensor Fusion algorithm to distinguish the obstacle in the indoor environment. Under two conditions: single and multiple obstacles scenarios, the autonomous drone implementing Kalman Filter in Sensor Fusion experienced the real time response linearly as the distance increases.","PeriodicalId":446396,"journal":{"name":"2021 17th International Conference on Quality in Research (QIR): International Symposium on Electrical and Computer Engineering","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116711698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
2021 17th International Conference on Quality in Research (QIR): International Symposium on Electrical and Computer Engineering
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