Agent-Based Petroleum Offshore Monitoring Using Sensor Networks

Hussain, Sajid; Islam, M.R.; Shakshuki, Elhadi M.; Zaman, M. S.

doi:10.1109/dexa.2006.22

Cited by 3 publications

(11 citation statements)

References 6 publications

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“…Some practical scenarios, however, present channels that are naturally composed of multiple layers, such as oil wellbore [ 22 , 23 ]. In such cases, the propagation phenomenon is further complicated.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Energy and Data Transfer through a Metal—Liquid Multi-Layer Channel Enhanced by Automatic Gain and Carrier Control

Pereira

Braga

Kubrusly

2023

Sensors

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Ultrasonic communication and power transfer are attractive solutions when conventional electromagnetic-based or wired connections are unfeasible. Most ultrasonic communication applications concern a single-solid barrier. Nevertheless, some relevant scenarios can be composed of several fluid—solid media, through which communication and power transfer are intended. Due to its multi-layer nature, insertion loss and, consequently, the system efficiency considerably decrease. This paper presents an ultrasonic system capable of simultaneously power transferring and transmitting data through a set of two flat steel plates separated by a fluid layer using a pair of co-axially aligned piezoelectric transducers on opposite sides of the barrier. The system is based on frequency modulation and adopts a novel technique for automatic gain and automatic carrier control. The modems used herein were developed specifically for this application, rendering the system able to transfer data at a rate of 19,200 bps, using the frequency shift keying (FSK) modulation scheme and simultaneously transferring 66 mW of power through two flat steel plates (5 mm) separated by a fluid layer (100 mm), which completely supplied a pressure and temperature sensor. The proposed automatic gain control allowed a higher data transmission rate and the automatic carrier control reduced power consumption. The former reduced the transmission error from 12% to 5%, while the latter reduced the global power consumption from 2.6 W to 1.2 W. The proposed system is promising for monitoring applications such as oil wellbore structural health monitoring systems.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic Energy and Data Transfer through a Metal—Liquid Multi-Layer Channel Enhanced by Automatic Gain and Carrier Control

Pereira

Braga

Kubrusly

2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Igualando as Equações (3-12) e (3-13), uma vez que está sendo feita uma relação direta entre tensão elétrica e força mecânica, e entre corrente elétrica e velocidade mecânica, obtém-se a velocidade por meio da Equação (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14).…”

Section: Modelagem Das Camadas Intermediárias Do Canal Acústicounclassified

“…Fazendo uma analogia entre o meio elétrico e a impedância característica do meio mecânico, pode-se obter a Equação (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15), onde 𝑍 𝑒𝑙𝑒 é a impedância elétrica da linha de transmissão que será aplicada no modelo SPICE:…”

Section: Modelagem Das Camadas Intermediárias Do Canal Acústicounclassified

“…Para obter a impedância acústica da camada intermediária tem-se a Equação (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16), onde 𝑍 𝑎𝑐𝑢 refere-se a impedância acústica:…”

Section: Modelagem Das Camadas Intermediárias Do Canal Acústicounclassified

“…Exemplos, são cascos de navios e submarinos, containers e vasos de pressão [5,6]. Outros exemplos da impossibilidade de penetração ocorrem onde existe uma diferença de temperatura ou de pressão, tais como: poços de prospecção de petróleo [7,8], caldeiras de alta pressão [9] e fuselagem de aviões [10]. Nesses casos, um furo na parede que separa os dois ambientes poderia fragilizar e, com o tempo, danificar a parede e comprometer o sistema [11].…”

Section: Introductionunclassified

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