Smart Sensors for Augmented Electrical Experiments

Sensors

Carl C. Rheinländer¹  Norbert Wehn¹  Frederik Lauer¹  Sebastian Kapp²  Fabian Beil²  Jochen Kuhn² 

[1] Microelectronic Systems Design Research Group, Department of Electrical and Computer Engineering, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany;Physics Education Research Group, Department of Physics, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany;

关键词: augmented reality;    smart sensors;    STEM education;    laboratory instruction;   

DOI  :  10.3390/s22010256

来源: DOAJ

【 摘 要 】

With the recent increase in the use of augmented reality (AR) in educational laboratory settings, there is a need for new intelligent sensor systems capturing all aspects of the real environment. We present a smart sensor system meeting these requirements for STEM (science, technology, engineering, and mathematics) experiments in electrical circuits. The system consists of custom experiment boxes and cables combined with an application for the Microsoft HoloLens 2, which creates an AR experiment environment. The boxes combine sensors for measuring the electrical voltage and current at the integrated electrical components as well as a reconstruction of the currently constructed electrical circuit and the position of the sensor box on a table. Combing these data, the AR application visualizes the measurement data spatially and temporally coherent to the real experiment boxes, thus fulfilling demands derived from traditional multimedia learning theory. Following an evaluation of the accuracy and precision of the presented sensors, the usability of the system was evaluated with $n=20$ pupils in a German high school. In this evaluation, the usability of the system was rated with a system usability score of 94 out of 100.

【 授权许可】

Unknown