2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)最新文献_第6页

Design of an Accurate Contactless Voltage Probe Including a Signal Processing Circuit 含信号处理电路的精确非接触式电压探头设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237421

Chi-Fang Huang, Yi-Hung Hsu, Li-Cheng Hsiao

引用次数: 0

An All-Pass Design of a Three-section Branch Line Structure 三段支路结构的全通设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237442

Yu-hsiang Chou, Nadiah Alhusna Pramudya, Jan-Dong Tseng

引用次数: 0

A study of measurement technology based on Structured Light Detection and Deep Learning 基于结构光检测和深度学习的测量技术研究

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237446

C. Lin, Hsuan-Fu Wang, Hai Zhou

{"title":"A study of measurement technology based on Structured Light Detection and Deep Learning","authors":"C. Lin, Hsuan-Fu Wang, Hai Zhou","doi":"10.1109/iWEM49354.2020.9237446","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237446","url":null,"abstract":"This paper revealed an effective method to judge the quality levels of apples with optical images which could avoid the damages caused by touching measurement. When only using photographs of the apples, the quality levels cannot be effectively identified via auto optical inspection methods. We proposed a structured light projection system for detecting the apple surface topography which is corresponding to the small changes during storage periods. This system uses cosine waves with different phases to project onto the apple surface and then uses three phases to reconstruct the object. In order to get the most suitable spatial frequency for this system, we tested six spatial frequencies: f = 0.001, f = 0.003, f = 0.005, f = 0.008, f = 0.01, and f = 0.08. Test results show that the spatial frequency f = 0.008 is best for our samples and hardware equipment. A convolutional neural network modified from LeNet is used to classify both the pictures: directly captured from apples and the reconstructed pictures from the structured lighting system. Experiments were performed on 30 fresh apples which then storage for a period of 7 days, 14 days and 21 days. The results of the convolutional neural network trained on structured light system samples showed that the accuracy was 87%, but the accuracy of the results of only using photography of apples was just 46%.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133636854","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

An Uniplanar Multi-bands Antenna For The Laptop Applications 一种用于笔记本电脑的单平面多波段天线

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237436

He-Tsung Hung, H. Su

引用次数: 0

Dual Band Compact Open Loop Antenna Design for Wireless Local Area Network 无线局域网双频紧凑型开环天线设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237413

Chih-Chung Lin, D. Lin, Chin-Cheng Chien

{"title":"Dual Band Compact Open Loop Antenna Design for Wireless Local Area Network","authors":"Chih-Chung Lin, D. Lin, Chin-Cheng Chien","doi":"10.1109/iWEM49354.2020.9237413","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237413","url":null,"abstract":"A novel dual band open loop antenna refers to a slot and an inverted-L ground (Inverted-L) between the main resonant radiating elements connected to two radiating metal elements. short-line), and is directly printed on a FR4 PCB board substrate, so that the antenna can obtain dual frequency operating frequency. It contains a parallel bent main resonant radiating element connected to the feeding end, which can be adjusted to the size of the radiating element by changing the quarter-wavelength based on A high-frequency operating frequency band and an inverted-L short-line radiating element. One end of a rectangular metal element is connected to the main common-amplitude radiation metal element, and the other end is provided with a parallel slot and Inverted-L short-line radiating elements are coupled to obtain a low-frequency operating frequency band; and the gap of this parallel slot is exactly 0.01λ wavelength of the operating frequency, and the coupling part radiation pattern. The surface current generated by the loop is used to increase the antenna operating bandwidth (Bandwidth), so that the antenna can obtain dual-band operating bandwidth and good antenna gain.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116157073","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

An ACS-fed Super Wideband Active Antenna 一种acs馈电超宽带有源天线

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237450

Yinfeng Xia, Yingsong Li, Wei Xue, X. Liu

引用次数: 1

Coplanar Antenna Design for GNSS and WiFi Applications GNSS和WiFi应用的共面天线设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237405

Chih-Chiang Chen, Zei-Wei Huang, Kai-Hong Jheng, Zhi-De Lin, C. Sim, Horng-Dean Chen

引用次数: 2

A Study of NON-reciprocal Spatial Band Pass Filter 非互易空间带通滤波器的研究

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237419

Yuka Shinozaki, H. Arai

引用次数: 0

Design of a Wireless Sensor Network for Open Ocean Aquaculture Based on 802.11 ac Wireless Bridge and LoRa™ Technology 基于802.11 ac无线网桥和LoRa™技术的开放海洋水产养殖无线传感器网络设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237423

Tzong-Dar Wu, Zhi-Jun Chen, Chung-Cheng Chang, Hsuan-Fu Wang

{"title":"Design of a Wireless Sensor Network for Open Ocean Aquaculture Based on 802.11 ac Wireless Bridge and LoRa™ Technology","authors":"Tzong-Dar Wu, Zhi-Jun Chen, Chung-Cheng Chang, Hsuan-Fu Wang","doi":"10.1109/iWEM49354.2020.9237423","DOIUrl":"https://doi.org/10.1109/iWEM49354.2020.9237423","url":null,"abstract":"This paper presents the design of a remote monitoring system for open ocean aquaculture, which is based on the integration of two long-range wireless communication technologies: the IEEE 802.11ac wireless bridge and the LoRa-Android embedded system. The system is composed of sensors and underwater camera that can measure the seawater quality and observe the fish behavior in aquaculture cages in real time. The sensor and video electrical cables were connected to the watertight control unit attached to the upper frame of the cage with stainless steel brackets and wire rope. The sensor data and video recorded in control unit were sent to the remote data center located on land by LoRa wireless module and IEEE 802.11ac wireless bridge, respectively. Finally, all these data were uploaded to NTOU (National Taiwan Ocean University) Cloud center. To extend the system run time for the daily operation period under the fixed battery capacity, a remote relay controller has been used in the watertight control unit. The entire system can be shut down by remote commands except the relay itself and the wireless subsystem. In addition, the wireless subsystem can be turned off by setting a periodic wake-up time in the relay controller for power saving. The preliminary experiment was performed at Gongliao in New Taipei City to test the proposed system. After successful testing, the whole system has been setup at the fish farm at Pingtung for long-term testing. The experiment results show that the proposed wireless sensor network has good suitability and sustainability when applied in the field of open ocean aquaculture.","PeriodicalId":201518,"journal":{"name":"2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131448175","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: 4

4×4 MIMO antenna design for 5G NR FR1 mobile handset applications 4×4 5G NR FR1手机应用MIMO天线设计

2020 International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2020-08-26 DOI: 10.1109/iWEM49354.2020.9237406

I. Chen, C. Peng, Hsiang-An Liu, You-ming Chen

引用次数: 0