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Flooding disasters have led to heavy costs including enormous property losses and casualties. The biggest challenge lies in rescue operation is the low efficiency and the high security risk of rescuers, which is also a problem focused on by this work. Unmanned system is one of the solution that replace people in the rescue operation. However, there are still some obvious defects of unmanned system...
As the continuous accumulation of knowledge for the Ocean, it is universally acknowledged that there is an evergrowing awareness of the vital importance of the ocean in whatever aspects. Temperature and conductivity, as basic hydrological parameters of the Ocean, play extremely important roles in marine resource recognition, exploitation and utilization. The paper designs a underwater inductive coupling...
The last decade can be considered an embryonic period for seafloor networks with the introduction of sizeable networks off the West Coast of Canada, off the West Coast of the United States and in the Mediterranean Sea, as well as smaller networks spread throughout the world's oceans. The amount of data currently available is expected to pale in comparison to future prospects as the infrastructure...
This paper will describe a compact energy generation and storage system to harvest temperature differentials in the ocean. This is a unique power source underwater in the absence of solar and wave energy. The current state-of-the-art autonomous underwater vehicles and sensors are mostly powered by primary battery, and therefore have limited capacity and lifetime. Harvesting the ocean thermal energy...
A new small-sized autonomous surface vehicle actuated by a water-jet has been developed at INESC TEC for search and rescue of victims at sea. This paper describes the vehicle main components and presents the control and guidance laws governing the motion and enabling it to perform line-following and target tracking missions. Results from field trials are presented, demonstrating the capabilities and...
As buoyancy-driven underwater gliders which have multi-functionality become more and more important instruments of monitoring and exploring the ocean, it is momentous to research and verify the performance of hardware of glider and the function of control software by establishing mathematical model and simulation. So a semi-physical motion simulation system of buoyancy-driven underwater glider is...
In this paper, the design and control of a new underwater glider having a high horizontal speed was studied. For this, the capacity of buoyancy engine which performs 2.5(knots) horizontal speed was designed. Especially, a controllable buoyancy engine to regulate the amount of buoyancy was designed and developed for control of the pitching angle of UG and the mass shifter carrying the battery was designed...
Swarm robotics is a promising approach characterized by large numbers of relatively small and inexpensive robots. Since such systems typically rely on decentralized control and local communication, they exhibit a number of interesting and useful properties, namely scalability, robustness to individual faults, and flexibility. In this paper, we detail the design and development process of a swarm robotics...
This paper describes a new class of autonomous marine vehicles named Medusa and highlights their role in a number of EU projects addressing multiple vehicle scenarios. The MEDUSA vehicles, with surface and diving versions, were designed and built at the Institute for Systems and Robotics, IST, Univ. de Lisboa, Portugal as a result of an effort aimed at affording researchers and practitioners of marine...
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