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[IEEE 2019 SBFoton International Optics and Photonics Conference (SBFoton IOPC) - Sao Paulo, Brazil (2019.10.7-2019.10.9)] 2019 SBFoton International Optics and Photonics Conference (SBFoton IOPC) - Using the Smartphone as an Ubiquitous Platform for Implementing Optical Fiber Sensors
摘要： This paper reports the development of a low-cost kit to turn smartphones into versatile platforms for interrogating optical fiber sensors. The adapter for connecting the fiber to the phone camera was 3D printed, whereas the application software was programmed for AndroidTM operating system. Different types of sensors based on multimode fiber and LED source were tested. The resolutions for the microbending displacement sensor, the fiber reflectometer, and the macrobending temperature probe are 26 μm, 0.0006 RIU, and 3.9?C, respectively. In addition to a didactic kit for photonics classes, the proposed device can also be used as a portable sensor for multiple purposes since the transducer modulus can be exchanged to assess different physical and chemical variables.
关键词： smart devices,optical fiber sensor,open educational resources,mobile applications
更新于2025-09-16 10:30:52
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A holographic mobile-based application for practicing pronunciation of basic English vocabulary for Spanish speaking children
摘要： This paper describes a holographic mobile-based application designed to help Spanish-speaking children to practice the pronunciation of basic English vocabulary words. The mastery of vocabulary is a fundamental step when learning a language but is often perceived as boring. Producing the correct pronunciation is frequently regarded as the most difficult and complex skill for new learners of English. In order to address these problems this research takes advantage of the power of multi-channel stimuli (sound, image and interaction) in a mobile-based hologram application in order to motivate students and improve their experience of practicing. We adapted the prize-winning HolograFX game and developed a new mobile application to help practice English pronunciation. A 3D holographic robot that acts as a virtual teacher interacts via voice with the children. To test the tool we carried out an experiment with 70 Spanish pre-school children divided into three classes, the control group using traditional methods such as images in books and on the blackboard, and two experimental groups using our drills and practice software. One experimental group used the mobile application without the holographic game and the other experimental group used the application with the holographic game. We performed pre-test and post-test performance assessments, a satisfaction survey and emotion analysis. The results are very promising. They show that the use of the holographic mobile-based application had a significant impact on the children?s motivation. It also improved their performance compared to traditional methods used in the classroom.
关键词： English Foreign Language,Holograms,Mobile Applications,Learning at Early Age,Interactive Learning Environments
更新于2025-09-09 09:28:46