抄録
In this research, a solar-powered environment monitoring system for lake water has been developed. The system employs several drifting buoys to observe lake water quality and flow. A commercial Android device, used as the system controller, is mounted on the buoys and integrates a microcomputer processing data received from several sensors. Sensor data and GPS data are submitted to a server via the Internet. Based on GPS position information, lake water quality information of whole surface from discrete data using method of Lagrange multiplier. By transitions of GPS position information, flow direction and velocity are estimated. In previous works, flow of a lake was estimated by the integrated system. However, a buoy floated on the lake, only surface current flow was estimated. In this paper, to measure and estimate deeper layer current flow, a novel mechanism of a buoy for the environment monitoring system for lake water is proposed.
