RIASSUNTO
This paper presents systems for measuring wave height with a personal ocean observation buoy mounted with a 6-axis motion sensor. In the Japanese fishing industry, while introduction of ICT has been progressing to measure ocean environmental data and manage the safety of fisheries, there are some problems, such as cost, for general fishermen to introduce personal ICT equipment. To solve these problems, we have developed a personal ocean observation buoy (smart buoy) with communication function as part of studying smart fisheries. The concept of smart buoys is to make them cheap and affordable by devising the structure for general fishermen to use. To improve safety, we developed wave height measurement systems using an accelerometer installed on the controller of a smart buoy. The developed systems measured wave height by calculating the acceleration component in the vertical direction after correcting the smart buoy's tilt by mathematical rotation. In order to confirm whether the developed systems could measure wave height, we implemented the systems on the smart buoy and conducted evaluation experiments at sea. From these experiments, we confirmed that results of the sonar and pressure sensors when compared with those of the developed systems were close.