Title page for etd-0028114-122007


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URN etd-0028114-122007
Author Jia-De Su
Author's Email Address No Public.
Statistics This thesis had been viewed 5345 times. Download 378 times.
Department IAMPUT
Year 2013
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title A Preliminary Study of Operational Parameters for Underwater Towed Camera System
Date of Defense 2014-01-22
Page Count 88
Keyword
  • Seafloor
  • Vehicle
  • Illuminance
  • Height
  • Abstract Twist-Pair Towed Camera (abbr. TP-TowCam), which means when we use this vehicle in the ocean, the more depth we yearn to explore, the more darkness we have. Therefore, we demand the deep-sea lights to augment the illuminance of hydrography. There is one problem we need to face, inasmuch as the light in the ocean was absorbed and scattered by the sea’s depth. It makes a point that the TP-TowCam fails to take a photo in the depths of the ocean. However, consider that TP-TowCam influence the security of operation and the horizon of vision. We hope we can increase bulbs in the vehicle to extend the seafloor, yet we do not clear that the number of lamps we add is able to let vehicle, the distance between the vehicle and seabed is approximate 3 to 4 meters, raise the height of taking photographs. In order to discuss this issue, first of all, we are resolving the elemental character of optics. Second, utilizing decline of transmitting light this theory, considering what is the different illuminance value in various elevations below the ocean. Lastly, using the vehicle can receive the threshold of minimum (the minimum value is 0.2 lux) finding the maximum of altitude on the seafloor. The simulated results indicate that the number of the TP-TowCam’s light can ensure meet our target in lightly turbid ocean waters. On the other hand, in highly turbid ocean waters, we have no ability to assure the vehicle is work or not. The key point of the vehicle is involved in Para-boat and cable, but the vehicle has to manage its height. Thus, we need to control the cable and speed of ship to restrain the vehicle from specific altitude. Hence, this study is through the simulated process of cable in the static state to discuss the effect of tow height in diverse acceleration. To sum up, the ship in different accelerate influence of the vehicle in the size of fluid friction. Besides, the speeds of ship also affect the vehicle to tow in different altitude.
    Advisory Committee
  • Chi-Cheng Cheng - chair
  • Hsin-Hung Chen - co-chair
  • Chau-Chang Wang - advisor
  • Files
  • etd-0028114-122007.pdf
  • Indicate in-campus at 2 year and off-campus access at 2 year.
    Date of Submission 2014-01-29

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