Preliminary Study of an Underwater Wireless Sensor Designed for Interrogating the Environmental Condition of Flexible Pipe Annulus

Kuhn, Matheus Freitas; Jacques, Rosângela Assis; Clarke, Thomas Gabriel Rosauro

doi:10.1007/s10921-019-0598-1

Cited by 2 publications

(2 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the relevant analysis mentioned above, the declaration boundary of marine organisms and the results of multiple distortion fusion are discussed (Kuhn et al 2019), and the method of analyzing the degree of disappearance of marine organisms is used to construct a node coverage ridge balance model. The state formula of the model is:…”

Section: Load Balancing Of Transmission Links In Complex Dynamic Network For Marine Biological Ecological Environment Monitoringmentioning

confidence: 99%

RETRACTED ARTICLE: Marine biological ecological environment monitoring based on complex dynamic network model

Nie

Yao

et al. 2021

Arab J Geosci

View full text Add to dashboard Cite

In order to improve the monitoring capability of marine biological ecological environment, a monitoring model of marine biological ecological environment based on complex dynamic network model is proposed, and an optimal deployment method of complex dynamic network nodes for marine biological ecological environment monitoring based on multi-sensor fusion tracking scheduling is constructed. An optimized topological structure model of a complex dynamic network node for marine biological ecological environment monitoring is constructed; an output link model of the marine biological ecological environment monitoring network node is designed by combining a node output load balancing adjustment method; a spatial link block balancing scheduling technology is adopted for adaptive weighted learning of multiple coverage links of the marine biological ecological environment monitoring network node; a multi-sensor fusion tracking scheduling method is adopted to construct a multi-coverage link equilibrium scheduling model of marine biological ecological environment monitoring network nodes; a complex dynamic network node coverage analysis is carried out by combining a hierarchical analysis method; an optimal deployment model of the complex dynamic network node for marine biological ecological environment monitoring is established; and the optimal deployment of the complex dynamic network node for marine biological ecological environment monitoring is realized by combining a principal component analysis method and a fuzzy clustering method. The simulation results show that the optimized deployment of complex dynamic network nodes for marine bio-ecological environment monitoring by the method has better intelligence and scheduling accuracy, reduces the error rate of network communication, and improves the balanced deployment capability of complex dynamic network nodes for marine bio-ecological environment monitoring. The stability of data transmission is improved. It provides a favorable basis for marine ecological environment monitoring.

show abstract

Section: Load Balancing Of Transmission Links In Complex Dynamic Network For Marine Biological Ecological Environment Monitoringmentioning

confidence: 99%

RETRACTED ARTICLE: Marine biological ecological environment monitoring based on complex dynamic network model

Nie

Yao

et al. 2021

Arab J Geosci

View full text Add to dashboard Cite

show abstract

“…These sensors have potential applications in SHM for marine structures because of their passive, wireless, simple, compact size, and multimodal nature [16]. RFID technologies are very sensitive to the environment in which they are deployed, and variations in their impedance or resonance frequency have been employed for sensing purposes [17][18][19]. In addition, systems with multiple resonance frequencies have been employed for characterization of depth and orientation of surface cracks in several systems [20,21].…”

Section: Introductionmentioning

confidence: 99%

RFID wireless system for detection of water in the annulus of a flexible pipe

et al. 2020

Self Cite

View full text Add to dashboard Cite

Corrosive environments are responsible for the highest degree of degradation and failure in marine structures. The presence of sea water in marine structures such as flexible pipes can cause a significant reduction in their operational life, especially when associated with permeated gases, which could lead to corrosion related failure mechanisms such as corrosion-fatigue and hydrogen cracking. The ingress of sea water into flexible pipes can occur either due to ruptures in their external polymeric sheath or to permeation of condensed water from the pipe bore. This event since flooding of the so-called annular space of flexible pipes is the trigger for all knows corrosion assisted failure modes, it is clear that a system that is able to reliably detect the presence of water in the structure is highly desirable. This work will describe a radio frequency identification (RFID) system designed for this purpose; it relies on the measurement of shifts in the resonance frequency of specially-designed tags which would be inserted within the layers of the flexible pipe during manufacturing. This paper shows the design and validation process of these tags and also of a reader which is meant to be scanned along the outside surface of the pipe by a remotely-operated vehicle (ROV). The study was performed through a finite element analysis and a test in which the tags were inserted within a full-scale mock-up of a flexible riser, which was then flooded with synthetic seawater. Results show that the shift in response due to sea water is clearly identifiable and distinguishable from other effects.

show abstract

Preliminary Study of an Underwater Wireless Sensor Designed for Interrogating the Environmental Condition of Flexible Pipe Annulus

Cited by 2 publications

References 29 publications

RETRACTED ARTICLE: Marine biological ecological environment monitoring based on complex dynamic network model

RETRACTED ARTICLE: Marine biological ecological environment monitoring based on complex dynamic network model

RFID wireless system for detection of water in the annulus of a flexible pipe

Contact Info

Product

Resources

About