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Ball & beam experiment control with current sensing 具有电流传感的球梁实验控制
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984357
João Oliveira, S. Balula, H. Fernandes
{"title":"Ball & beam experiment control with current sensing","authors":"João Oliveira, S. Balula, H. Fernandes","doi":"10.1109/EXPAT.2017.7984357","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984357","url":null,"abstract":"One of the most typical experiments in control is the classical Ball & Beam apparatus. An electrical measurement of the ball position is traditionally used to perform control. The metallic ball makes an electrical contact across the two Cr-Ni rails in which it circulates. The current injected in one of the rails creates a measurable voltage difference between the terminals of the second one, linearly dependent with the ball position. The measurement noise is filtered out using both analog and digital techniques. By also measuring the beam tilt angle with a digital protractor, the system becomes observable. Using two cascaded digital PID controllers the position of the ball is kept around the set point with a standard deviation of 10mm. The experiment performs correctly allowing deep study of the noise influence on the controller and its mitigation techniques. The control board is connectable to a single-board computer enabling remote operation of the experiment. Integration on a remote control laboratory such as e-lab is straight forward.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133805794","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: 2
Design and instrumentation of a magnetic field micro-probe mapper: An e-lab aparatus to map a coil's magnetic field 磁场微探针测绘仪的设计与仪器:用于测绘线圈磁场的电子实验室仪器
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984379
H. Alves, Diogo Carvalho, T. Pereira, H. Fernandes
{"title":"Design and instrumentation of a magnetic field micro-probe mapper: An e-lab aparatus to map a coil's magnetic field","authors":"H. Alves, Diogo Carvalho, T. Pereira, H. Fernandes","doi":"10.1109/EXPAT.2017.7984379","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984379","url":null,"abstract":"The magnetic field experimental study is a difficult task as quantitative magnetic experiments are not so common in schools mostly due to the necessary instruments sensitiveness. In this experiment we devise an apparatus capable of tracing the local 3-D magnetic field vector components. The main objective of this device is to allow the understanding of the field's magnetic vector nature and letting the student distinguish between field lines and contour lines of equal magnitude.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127135877","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: 1
A teacher training workshop to promote the use of the VISIR remote laboratory for electrical circuits teaching 举办教师培训工作坊，推广使用VISIR远程实验室进行电路教学
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984351
Carlos Arguedas-Matarrita, S. Concari, J. García-Zubía, S. Marchisio, U. Hernández-Jayo, G. Alves, Inigo Uriarte-Canivell, Marco Conejo-Villalobos, I. Gustavsson, Fernando Ureña Elizondo
{"title":"A teacher training workshop to promote the use of the VISIR remote laboratory for electrical circuits teaching","authors":"Carlos Arguedas-Matarrita, S. Concari, J. García-Zubía, S. Marchisio, U. Hernández-Jayo, G. Alves, Inigo Uriarte-Canivell, Marco Conejo-Villalobos, I. Gustavsson, Fernando Ureña Elizondo","doi":"10.1109/EXPAT.2017.7984351","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984351","url":null,"abstract":"The learning of Physics involves building up and using lab experiments. In turn, teachers must be trained in experimenting and using several resources that enable them to design valuable teaching strategies and learning activities. Thanks to Information and Communication Technologies (ICT), virtual and remote labs can provide a framework where physical experiments can be developed. Altough remote labs have been in use for over a decade now in several countries and levels of education, its use at secondary schools in Latin America has not been reported yet. The Virtual Instruments System in Reality (VISIR) is one of these remote labs, suitable to practice in the area of electrical circuits. This paper aims at describing how this remote lab was used in a training workshop for secondary school level teachers of Physics in Costa Rica.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"63 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125943236","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: 7
A web GIS-based platform to assist authorities in emergency response using VGI and sensor data 基于地理信息系统的网络平台，协助当局利用地理信息系统和传感器数据进行应急响应
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984352
Diogo Fontes, C. Fonte, A. Cardoso
{"title":"A web GIS-based platform to assist authorities in emergency response using VGI and sensor data","authors":"Diogo Fontes, C. Fonte, A. Cardoso","doi":"10.1109/EXPAT.2017.7984352","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984352","url":null,"abstract":"In order to assist civil protection authorities in emergency response situations, a web GIS-based platform was developed to integrate Volunteered Geographic Information (VGI) alongside with physical sensor data and official information, so that all these data can be integrated into one system and complement each other.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"17 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121009362","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 educational kit to teach and learn Operational Amplifiers 一个教育工具包，教和学习运算放大器
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984353
R. Costa, Paulo Portela, G. Alves
{"title":"An educational kit to teach and learn Operational Amplifiers","authors":"R. Costa, Paulo Portela, G. Alves","doi":"10.1109/EXPAT.2017.7984353","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984353","url":null,"abstract":"Operational Amplifiers are widely used for implementing simple and complex electronic circuits in electronic engineering. As a contribution to improve the way this integrated circuit is included in electronic engineering courses' curricula, this paper presents a prototype of an educational kit comprising a simulation tool and a reconfigurable hardware platform with the OpAmp uA741. It enables the simulation and experimentation of several electronic circuits constructed with the OpAmp uA741.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124740284","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: 3
Simple experiment integration into modular online laboratory enviroment 简单的实验集成到模块化的在线实验室环境
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984377
M. Rábek, K. Žáková
{"title":"Simple experiment integration into modular online laboratory enviroment","authors":"M. Rábek, K. Žáková","doi":"10.1109/EXPAT.2017.7984377","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984377","url":null,"abstract":"The paper contributes to the area of remote laboratories. It describes an implementation of a particular remote laboratory system and reviews its design and key features. The paper discusses several adopted technologies and the motivation behind their use. To emphasize the advantages of a modular remote laboratory application, the paper illustrates the process of adding a new remote experiment by connecting a real device to the system. This process is broken down into several steps and each is explained in more detail. The paper concludes with a rundown of other additional features which increase the overall user-friendliness of this web application.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"7 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130489200","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: 8
EEG-based drowsiness detection platform to compare different methodologies 以脑电图为基础的睡意检测平台，比较不同方法
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984343
Daniel Ribeiro, C. Teixeira, A. Cardoso
{"title":"EEG-based drowsiness detection platform to compare different methodologies","authors":"Daniel Ribeiro, C. Teixeira, A. Cardoso","doi":"10.1109/EXPAT.2017.7984343","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984343","url":null,"abstract":"Over the years it has been observed that drowsiness appears as one of the factors of the occurrence of driving accidents. By focusing the study on sleep stage 1, transition period between awakeness and sleepiness, it's possible to create a system capable of detecting drowsiness. In this paper, we describe an electroencephalogram (EEG)-based platform capable of detecting drowsiness. This platform consists of the processing and analysis of EEG signals, using several methods to select the most promising features, serving these as input for the creation of different classifiers. Thus, it is possible to study the most appropriate methodology for the development of a prototype capable of detecting drowsiness. The best results were obtained with the use of delays, specifically with 23 and 12, where we used the second and third previous epochs from the past and previous and second previous epochs, respectively, obtaining classifiers with an accuracy of 89.60%, with the delay 23, and 89.45%, with delay 12. Both of these classifiers were SVM with radial basis function kernel.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116182756","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: 7
Virtual transportation for immersive systems 沉浸式系统的虚拟交通
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984415
Bruno Patrão, P. Menezes
{"title":"Virtual transportation for immersive systems","authors":"Bruno Patrão, P. Menezes","doi":"10.1109/EXPAT.2017.7984415","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984415","url":null,"abstract":"This paper presents a demonstration of another solution for enabling user realistic control of displacements in a VR system. Aiming to provide the user with tools that allow him to navigate through endless virtual environments without feeling motion sickness. Observing the world with our focus on travelling mechanisms, we could identify situations where information captured from visual and vestibular system doesn't match and in general people don't feel nauseous, such as driving a vehicle or riding a bicycle. Our hypothesis is that if we can anticipate or control the movement coupled with visual cues we will not experience motion sickness.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129551924","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
Ultrasonic indoor positioning for smart environments: A mobile application 智能环境的超声波室内定位:一个移动应用程序
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984382
E. Díaz, M. C. Pérez, D. Gualda, J. M. Villadangos, J. Ureña, J. J. García
{"title":"Ultrasonic indoor positioning for smart environments: A mobile application","authors":"E. Díaz, M. C. Pérez, D. Gualda, J. M. Villadangos, J. Ureña, J. J. García","doi":"10.1109/EXPAT.2017.7984382","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984382","url":null,"abstract":"In this paper we present a mobile application and solution for accurate smart indoor positioning. Smart society applications do normally require user location, specifically, in indoor environments high accuracy can enrich augmented or virtual reality, gaming, in-building guidance or support for ambient assisted living. We use encoded ultrasonic signals and TDMA protocol to obtain fine-grained distance measurements. Signals are emitted from a set of low cost ultrasonic local positioning systems, operating around 41kHz. An acquisition module, based on a MEMs microphone and a microcontroller, digitizes at 100kHz the incoming signals and send them over an USB protocol to the mobile device for their processing. We have implemented an Android Application that computes the Time Difference of Arrival (TDOA) to estimate the current position and display it in the mobile screen. Several users can compute their positions autonomously and user privacy is protected. The application can be configured for different encoding techniques and modulation schemes according to the environment requirements. Absolute error less than 5 cm is achieved in a 5×6m complex environment in 85% of the cases for an average position refresh period of 200ms.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128933862","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: 22
Exploring avatar interactions to trigger social identity-related responses 探索化身互动以触发与社会身份相关的反应
2017 4th Experiment@International Conference (exp.at'17) Pub Date : 2017-06-01 DOI: 10.1109/EXPAT.2017.7984412
F. Pais, Bruno Patrão, P. Menezes
{"title":"Exploring avatar interactions to trigger social identity-related responses","authors":"F. Pais, Bruno Patrão, P. Menezes","doi":"10.1109/EXPAT.2017.7984412","DOIUrl":"https://doi.org/10.1109/EXPAT.2017.7984412","url":null,"abstract":"With the increasingly immersive environments becoming available, one can't help but wonder the possibilities they unlock. Not only the worlds themselves, but also the avatars that populate them are becoming increasingly more complex. How people can use this developments has been a topic of discussion in the past few years. In this demonstration we use a Virtual Reality Environment (VRE) as a tool to better understand our social identity, particularly about underlying bias towards determined situations. We do so by comparing what the person thinks about themselves with actual physiological data collected in specific scenarios.","PeriodicalId":283954,"journal":{"name":"2017 4th Experiment@International Conference (exp.at'17)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117200051","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: 1
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