Development of Underwater Monitoring Wireless Sensor Network to Support Coral Reef Observation

Suzuki, Takahiro; Kato, Kazúo; Makihara, Emi; Kobayashi, Takafumi; Kono, Hitoshi; Sawai, Kei; Kawabata, Kuniaki; Takemura, Fumiaki; Isomura, Naoko; Yamashiro, Hideyuki

doi:10.1155/2014/189643

Cited by 18 publications

(7 citation statements)

References 22 publications

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“…It is the case of the structural health monitoring of bridges and harbors [ 24 , 25 ], the supervising of the vital parameters of athletes during water sport training [ 26 ] and the monitoring of fish farms [ 27 ]. However, the presence of the human activities also has indirect implications in the modification of the aquatic habitats, for this reason other relevant research topics are those aimed at the monitoring of water quality [ 28 ], water pollution [ 29 ] and coral reef ecosystems [ 30 ]. Finally, even the realization of high-water or fill-level alarm systems can be a topic of interest in those scenarios where the timely communication of the water level rise is crucial, e.g., in case of tides [ 31 ].…”

Section: Related Workmentioning

confidence: 99%

LoRaWAN Transmissions in Salt Water for Superficial Marine Sensor Networking: Laboratory and Field Tests

Pozzebon

Cappelli

Campagnaro

et al. 2023

Sensors

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In this paper, the authors present the results of a set of measurements carried out to analyze the transmission capabilities of the LoRaWAN technology for underwater to above water transmission in saline water. A theoretical analysis was used to model the link budget of the radio channel in the considered operative conditions and to estimate the electrical permittivity of salt water. Preliminary measurements were performed in the laboratory at different salinity levels to confirm the application boundaries of the technology, then field tests were conducted in the Venice lagoon. While these test are not focused on demonstrating the usability of LoRaWAN to collect data underwater, the achieved results demonstrate that LoRaWAN transmitters can be used in all those conditions when they are expected to be partially or totally submerged below a thin layer of marine water, in accordance with the prediction of the proposed theoretical model. This achievement paves the way for the deployment of superficial marine sensor networks in the Internet of Underwater Things (IoUT) context, as for the monitoring of bridges, harbor structures, water parameters and water sport athletes and for the realization of high-water or fill-level alarm systems.

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Section: Related Workmentioning

confidence: 99%

LoRaWAN Transmissions in Salt Water for Superficial Marine Sensor Networking: Laboratory and Field Tests

Pozzebon

Cappelli

Campagnaro

et al. 2023

Sensors

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“…This method suffers from delays due to the time required to complete a round trip through all deployed sensors. [ 2 ] suggests a different setting with underwater sensors wired to a buoy equipped with a communication unit transmitting over the air with an 802.11b modem. This kind of dual node requires heavy anchoring, is only suitable for shallow waters and is more vulnerable to potential damages.…”

Section: Introductionmentioning

confidence: 99%

Subjective Quality Assessment of Underwater Video for Scientific Applications

Moreno-Roldán

Luque-Nieto

Poncela

et al. 2015

Sensors

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Underwater video services could be a key application in the better scientific knowledge of the vast oceanic resources in our planet. However, limitations in the capacity of current available technology for underwater networks (UWSNs) raise the question of the feasibility of these services. When transmitting video, the main constraints are the limited bandwidth and the high propagation delays. At the same time the service performance depends on the needs of the target group. This paper considers the problems of estimations for the Mean Opinion Score (a standard quality measure) in UWSNs based on objective methods and addresses the topic of quality assessment in potential underwater video services from a subjective point of view. The experimental design and the results of a test planned according standardized psychometric methods are presented. The subjects used in the quality assessment test were ocean scientists. Video sequences were recorded in actual exploration expeditions and were processed to simulate conditions similar to those that might be found in UWSNs. Our experimental results show how videos are considered to be useful for scientific purposes even in very low bitrate conditions.

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“…Therefore, we have been developing UMSN, a wireless sensor network system to support the coral ecological system survey activities, for conserving the coral reef environment by applying wireless sensor network (WSN) technologies to monitor the underwater environmental conditions (Fig. 1) [1] [2]. One of problems to capture images for monitoring underwater environment conditions by UMSN for long term is attached algae removing.…”

Section: Introductionmentioning

confidence: 99%

Study of Wireless Sensor Node Functions with Attached Algae Removal Ability for Under-water Monitoring Sensor Network

Ikeda

Suzuki

Sawai

et al. 2015

ICAM

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This article discusses functions of a stationary underwater sensor node (S-USN) with attached algae removal ability for constructing underwater monitoring sensor network (UMSN) that is used to support coral ecological system survey activities. The experiments of attached algae growth was conducted in Okinawa coast. Based on knowledge obtained by the experiments and coral researcher's advice, container surface wiping function was implemented to S-USN. 1

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Development of Underwater Monitoring Wireless Sensor Network to Support Coral Reef Observation

Cited by 18 publications

References 22 publications

LoRaWAN Transmissions in Salt Water for Superficial Marine Sensor Networking: Laboratory and Field Tests

LoRaWAN Transmissions in Salt Water for Superficial Marine Sensor Networking: Laboratory and Field Tests

Subjective Quality Assessment of Underwater Video for Scientific Applications

Study of Wireless Sensor Node Functions with Attached Algae Removal Ability for Under-water Monitoring Sensor Network

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