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태양조명시스템을 위한 저가형 태양광 추적 임베디드시스템 개발
김형우(Hyoung-Woo Kim),신병한(Byung-Han Sheen),위행섭(Haeng-Sub Wi),최준영(Joon-Young Choi) 한국정보기술학회 2016 한국정보기술학회논문지 Vol.14 No.1
We develop a low-cost solar tracking embedded system to improve the light-collecting efficiency of sun light systems. The driving part of the solar tracker is designed in the structure of inclination-dependent 2-axis that enables less initial production cost and easy maintenance. The embedded system hardware consists of two motor drivers to control the 2-axis movements independently, a GPS module to calculate the sun position, gyro-sensor, highperformance DSP, and additional communication interfaces for the configuration of real-time operation and the manual control. For the software of the solar tracking embedded system, we employ the mathematical formula-based tracking method using GPS data instead of the sensor-based tracking method using high-cost light sensors or hall sensors. The solar tracking performance of the developed embedded system is demonstrated by the experimental results that the normal location of light-collecting panel tracks the solar position within an error range of 0.03 degree.
태양광 추적 장치의 성능 향상을 위한 블루투스 기반 제어시스템 개발
김세준(Se-Jun Kim),김형우(Hyoung-Woo Kim),신병한(Byung-Han Shin),위행섭(Haeng-Sub Wi),남기곤(Kigon Nam),최준영(Joon-Young Choi) 한국정보기술학회 2016 한국정보기술학회논문지 Vol.14 No.9
We develop a bluetooth-based control system for the performance improvement of sunlight tracker, which improves the degradation of sunlight tracking performance by various physical factors occured during the installation of sunlight tracker. By using the mobile platform based on Android OS, the master part is developed to send and receive actuator control signal, correlation command signal, and current status information. In order to track the sun’s position automatically or manually, the slave part is constructed by the horizontal shaft drive-dependent 2-axis actuator together with GPS, gyrosensor, and bluetooth module. We conduct various experiments of sunlight tracker controlled by the designed control system for the performance evaluation. From the experiment results, we demonstrate that the sunlight tracker tracks the solar position within an error range of 0.05 degree.