The initial design and setup of camera system for ship cavitation observation

• Main Authors: Huang, Yi-Kai, 黃詣凱
• Other Authors: 李舒昇
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/zykjqm

碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 102 === The goal of this research work is to design and setup the ship cavitation observation camera system and its supporting rotating stages for the camera and light source. The ability to remote control and adjust the snap angle of the camera is very important for the ship cavitation observation and has been achieved. The requirements of the lamp and the camera have been defined and then different light collecting cover for the lamp have been designed and produced. To verify the effect of the light collecting cover, some tests has been done and the qualities of the images acquired with different camera snap parameters have been confirmed. The rotating stages for the lamp and camera have been designed according to the specifications. The camera rotating mechanism is commercial, and the position of the limit switches has been shifted to confine the rotation angle to the need. The rotating stage for the light source has been completed by adapting two gear motors and designing rotation mechanical components and the simple control circuit. The limit switches was also used to prevent the damage caused by collision. 　　The two rotating stages have been confirmed its feasibility. A series images were captured by the camera with different observation angles of the optical axis by remote controlling of the stage. The rotating angle of the camera has been calculated and it was about ±30 degree. The same range of the rotating angle could be achieved by the limit switches of different position. It showed that both the modified and the self-design rotating stages and the whole system satisfy the remote control requirements of ship cavitation observation