@inproceedings{HofmeisterKrebsSchickhuberetal., author = {Hofmeister, Justus and Krebs, Stefan and Schickhuber, Gerald and Scharfenberg, Georg}, title = {Design and development of a Pico Hydro turbine system for the use in developing countries}, series = {2015 5th International Youth Conference on Energy (IYCE), 27-30 May 2015, Pisa, Italy}, booktitle = {2015 5th International Youth Conference on Energy (IYCE), 27-30 May 2015, Pisa, Italy}, publisher = {IEEE}, doi = {10.1109/IYCE.2015.7180767}, pages = {1 -- 7}, abstract = {In Sub-Saharan Africa less than 10\% of the rural population has access to electricity [1]. Stand-alone power systems (SPS) can be a solution to the problem of the lack of electricity, which highlights challenges such as modules installation costs as well as the sufficient knowledge required for installing, maintaining and operating such systems. With this fact in mind, a 250 W Low Head turbine system was developed and optimized to have the advantage of the simplicity of installation and a construction from readily available materials. This design scores the electrical efficiency of 60\%, reduces manufacturing unit coast to 130 € and takes into account the necessity of providing a clear and simple manual describing the manufacturing and installation. A better version of the load controller, using a microcomputer is under current development. Mounting of the system have been simplified to reduce the amount of construction material required to provide uninterrupted 230 V at 50 Hz AC or optional 12 V DC power supply. Current efforts aim on transferring the required mechanical and electrical knowledge for building, programming, installing and maintaining such system to schools in targeted countries. This project doesn't only provide people in rural developing countries a gleam of hope to catch up with the developed countries, but also helps students to use their theoretical knowledge to realize practical applications.}, language = {en} } @inproceedings{HayakawaAlFaloujiSchickhuberetal., author = {Hayakawa, Shuhei and Al-Falouji, Ghassan and Schickhuber, Gerald and Mandl, Roland and Yoshida, Takahiro and Hangai, Seiichiro}, title = {A Method of Toothbrush Position Measurement using AR Markers}, series = {2020 IEEE 2nd Global Conference on Life Sciences and Technologies (LifeTech): 10-12 March 2020, Kyoto, Japan}, booktitle = {2020 IEEE 2nd Global Conference on Life Sciences and Technologies (LifeTech): 10-12 March 2020, Kyoto, Japan}, publisher = {IEEE}, doi = {10.1109/LifeTech48969.2020.1570619103}, pages = {91 -- 93}, abstract = {Appropriate daily brushing of the teeth is important for preventing oral diseases. Therefore, a personal assistant for assessing and coaching appropriate toothbrushing is needed. Herein, a three-dimensional toothbrush position measurement method using augmented reality (AR) markers is proposed. The AR markers are detected via a brushing video captured using a smartphone camera. The AR markers are installed on each surface of a dodecahedron attached at the rear end of the toothbrush. This report describes the proposed method, the resulting toothbrush position measurement accuracy, and the optimal number of markers needed for an accurate measurement of the position.}, language = {en} }