Near-Field VLF Electromagnetic Signal Propagation in Multistory Buildings

Ralchenko, M.; Roper, Mike; Samson, C.; Svilans, Markus

doi:10.1109/tap.2017.2783321

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…In order to study a new type of downlink communication technology based on anisotropic magnetoresistance technology, the current distribution of downhole drill string is modeled. According to the study, when verylowfrequency (VLF) alternating current (AC) is injected into the electrode, the distribution of electric current field in rock and soil layer can be approximately regarded as the electric field distribution of electrostatic field dipole [28]. According to the electric field line and potential distribution of electric dipole electrostatic field, the electric current field distribution of a pair of electrodes in rock and soil layer can be similar.…”

Section: Mathematical Model Of Downhole Drill String Current Distribu...mentioning

confidence: 99%

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Zhang

et al. 2022

Energies

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With the continuous improvement of automatization of underground oil and gas resources exploitation, more and more instructions are required for the control technology while drilling in complex processes. The conventional downlink communication technology has shortcomings, such as data transmission lag and high bit error rate, which cannot meet the actual needs. Therefore, developing a new high-speed and low bit error rate (BER) downlink communication technology is very important. In this study, a new type of downlink communication system based on the electric current field is designed. Firstly, based on the theory of electromagnetic field and electromagnetic wave, the current distribution model of the drill string is established. Then, the magnetic field distribution model of the drill string is deduced according to the research on the static electromagnetic field and boundary problems. Finally, the ground simulation experiment platform of the downlink communication system is built and tested. The experimental results show that the BER is only 1.02% when the data transmission rate is 1 kbps. To further reduce the BER of the system, the influence factors of information transmission such as different transmitting voltage, inter-electrode distances, and working temperature are tested and analyzed, respectively, which provides ideas for optimizing the technology of downlink information communication while drilling.

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Section: Mathematical Model Of Downhole Drill String Current Distribu...mentioning

confidence: 99%

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Zhang

et al. 2022

Energies

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“…Recently, Mendes et al in [7] presented a short‐range TTE communication platform using magnetic induction for measurement of channel parameters and of digital communications performance. Ralchenko et al in [8] simulated and observed TTE transmission at 4 kHz, within multi‐storey buildings, modelling each storey as a thin sheet (TS). Kisseleff in [9] proposed a TTE magnetic‐induction‐based wireless underground sensor network for localisation of a silent target node within an underground medium.…”

Section: Introductionmentioning

confidence: 99%

Propagation loss and apparent conductivity models for through‐the‐earth communication in sedimentary soil

Carreño¹,

Barreto²,

Braga³

2019

IET Microwaves, Antennas & Propagation

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Much of the channel modelling found in the literature for through‐the‐earth communication is based on deterministic formulations that consider few homogeneous layers of soil. However, due to the great variation in the properties of the soil, especially of its electrical conductivity, it is very difficult to generalise channel characterisation with such models. Some empirical models are used to identify apparent conductivity at specific sites in order to determine the propagation loss at these sites at any time. However, the use of these models is limited to the few frequencies used in the reference measurements. This study aims to statistically characterise magnetic field attenuation in underground coal mines. The authors use the Monte Carlo method based on electromagnetic simulations, using the finite element method. The simulations allowed empirical modelling, resulting in optimal operating frequency, propagation loss and apparent electrical conductivity statistics, especially for transmissions at the optimal frequency of each channel.

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Experimental Research of Electromagnetic Environment in Domestic Environment with Computer Visualization of Electromagnetic Pollution

Титов

Soshnikov

Drobyazko

2020

2020 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM)

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Near-Field VLF Electromagnetic Signal Propagation in Multistory Buildings

Cited by 5 publications

References 13 publications

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Research on New Drilling Downlink Communication Based on Anisotropic Magnetoresistive Technology

Propagation loss and apparent conductivity models for through‐the‐earth communication in sedimentary soil

Experimental Research of Electromagnetic Environment in Domestic Environment with Computer Visualization of Electromagnetic Pollution

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