EcoSTS: A Compact and Contactless Motion Measurement System for Coastal Sediments Tracking
| Autor: | Gao, Yu-Min, 高裕閔 |
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| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 In this thesis, we propose EcoSTS, a system for in-situ motion measurement with specific application to motion tracking and simulation of coastal sediments. EcoSTS consists of a collection of EcoSSG (smart sediment grains) as motion sensors and EcoSTS Commander for controlling them from a PC. An EcoSSG is a gyro-free inertial measurement unit (GF-IMU) that measures the motion of its enclosure in the form of a rock in response to wave forces, and it records the sensing data in its on-board memory. Its enclosure measures 4-cm in diameter and is made of ceramic material whose density resembles that of sand. EcoSTS Commander supports data transfer wirelessly from the EcoSSGs to the PC and data post-analysis. We implement wireless reprogramming for firmware update and battery charging wirelessly through the enclosure. In addition, we include a magnetic switch to turn on or off the EcoSSG without contact. EcoSTS has been tested by our collaborators in Wave Research Lab in Oregon, USA. Experimental results validate the ability to track the motion of sediments with high accuracy. We expect EcoSTS to be able to help researchers in fluidic dynamics and coastal engineering confirm their models of sediment motion underwater for the purpose of predicting coastline evolution and object motion in water in general. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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