Development of a solar-powered underwater glider

Arima, Masakazu; Okashima, Takuya; Yamada, Tomoki

doi:10.1109/ut.2011.5774120

Cited by 21 publications

(12 citation statements)

References 2 publications

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“…The authors have then tried to apply photovoltaic power generation system into underwater vehicles. Figure 1 shows the ocean-going solar-powered underwater glider, named Tonai60 (Twilight Ocean-zonal Natural-resources and Animals Investigator) [5]. The maximum operational depth is 60 metre.…”

Section: Underwater Glider Tonai60mentioning

confidence: 99%

Development of a coral monitoring system for the use of underwater vehicle

Arima

Yoshida

Tonai

2014

Oceans 2014 - Taipei

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The purpose of this research is to develop a coral monitoring system for the use of underwater vehicles. Reef coral is very sensitive about changes of ocean environment, such as unusual climate changes or increase of crown-of-thorns starfish resulting from the global warming. Coral can thus be an index of ocean environment. It is widely known that some kinds of corals have an inherent characteristic of fluorescence due to 'coral fluorescent protein (CFP).' The authors are developing an oceangoing solar-powered underwater glider, named 'Tonai60'. The operational depth of the Tonai60 glider is 60m, for ocean environmental monitoring in twilight ocean zone. The Tonai60 glider is equipped with an ocean-environment monitoring data logger 'RINKO-Profiler' of JFE Advantech Co., Ltd. and an underwater passive acoustic data logger 'A-tag' of Marine Micro Technology Corp. for monitoring marine mammals. Measuring items of RINKO-Profiler are depth, temperature, conductivity, salinity, dissolved oxygen, chlorophyll and turbidity. The glider is also equipped with a coral monitoring system at the forefront of its fuselage. This system consists of a network camera and 3-axis digital compass. Coral can be detected from an image binarised with a certain threshold. This paper deals with a coral monitoring system using ultraviolet LEDs and image analyses.

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Section: Underwater Glider Tonai60mentioning

confidence: 99%

Development of a coral monitoring system for the use of underwater vehicle

Arima

Yoshida

Tonai

2014

Oceans 2014 - Taipei

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“…A number of researches have looked into improving the vehicle endurance by extending the energy capacity [1]- [3] and moving away from power hungry propulsion technology [4]- [6]. Majority of these systems are very sensitive to water current.…”

Section: Introductionmentioning

confidence: 99%

Energy-efficient path planning for fully propelled AUVs in congested coastal waters

Koay

2013

2013 MTS/IEEE OCEANS - Bergen

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To navigate safely in littoral waters with complex currents and busy shipping activities, it is crucial to have small autonomous vehicle with full propulsion capability. Such systems typically have limited endurance. We therefore investigate the feasibility of improving their endurance using current-aware path planning algorithms that allow active propulsion to move the vehicle into favorable currents or to avoid obstacles. The strategy adopted is to minimize the use of propulsion while leveraging favorable currents as much as possible. We perform simulations using environmental data and operational constraints of autonomous vehicles. The current field is assumed to be timeinvariant over the period of the mission. Simulation results for 40 randomly generated source-destination pairs in Singapore Strait are presented. The performance is quantified by comparing the energy consumption of the path generated against the shortest distance path. Simulation results show that we are able to save 30-90% energy if the vehicles are allowed to drift along with the current. When the minimum speed of the vehicle is constrained to 2.5 knots, the energy savings could range from a few percent to more than 50%, depending on the currents along the route. The expected energy saving is the largest when the vehicle is allowed to operate at speeds comparable to water current while the savings diminish when the vehicle is required to operate at higher speed.978-1-4799-0002-2/13/$31.00 ©2013 IEEE

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“…Biomiméticos [21], [27], [28], [29], [30], [25] Gliders [31], [32], [23], [33], [34], [35], [36], [16], [37], [38] Híbrido ROV-AUV [39], [40], [41], [42], [43], [44], [45], [46] Híbrido ASV-AUV [38], [47] Híbrido Glider-AUV [31]…”

Section: Tipo Referênciasmentioning

confidence: 99%

“…Estudos para arqueologia [71], [30], [72] Inspeção visual de estruturas [73], [43], [74], [75], [76] Veículos de intervenção [77], [78], [79], [80], [46] Veículos para competições [81] Plataformas de desenvolvimento [82], [83], [84], [85], [86], [35] Assistência à mergulhadores [87] sensores de parâmetros da água. [94], [49], [95], [50], [46], [96], [69], [97], [31], [98], [54], [55], [32], [81], [89], [23], [33], [99], [51], [60], [93], [22], [100], [39], [101], [102], [70], <...>…”

Section: Aplicação Referênciasunclassified

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Desenvolvimento de veículos autônomos submarinos para aplicações oceanográficas.

Oliveira¹

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Development of a solar-powered underwater glider

Cited by 21 publications

References 2 publications

Development of a coral monitoring system for the use of underwater vehicle

Development of a coral monitoring system for the use of underwater vehicle

Energy-efficient path planning for fully propelled AUVs in congested coastal waters

Desenvolvimento de veículos autônomos submarinos para aplicações oceanográficas.

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