A new alarming system for an underground mining environment using visible light communications

Farahneh, Hasan; Hussain, Fatima; Fernando, Xavier

doi:10.1109/ihtc.2017.8058191

Cited by 13 publications

(8 citation statements)

References 12 publications

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“…The optical communication usually operates on the LOS approach and mild shadowing can be mitigated through the implantation of particular reflectors to improve the accessibility of light. The impact of shadowing for VLC can be calculated by employing the BGD model [42]. The blocking object in the path of visible light is the main source of shadow that can be estimated by identifying the particular source as a cylindrical object with a specific height and width.…”

Section: Shadowingmentioning

confidence: 99%

Characteristic Study of Visible Light Communication and Influence of Coal Dust Particles in Underground Coal Mines

et al. 2021

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The critical environment of the underground mines is a risky zone for mining applications and it is very hazardous to engage the miners without a sophisticated communication system. The existing wired networks are susceptible to damage and the wireless radio systems experience severe fading that restricts the complete access to the entire assembly of a mine. Wireless optical communication is a better approach that can be incorporated in the erratic atmosphere of underground mines to overcome such issues, as lights are already used to illuminate the mine galleries. This study is focused on investigating the characteristics of visible light communication (VLC) in an underground coal mine. The entire scope of VLC is elaborated along with the influence of coal dust particles and the scattering model. The impact of coal dust clouds on visibility and attenuation is analyzed for visible light transmission. The shadowing effect generated by the pillars and mining machinery is estimated by employing the bimodal Gaussian distribution (BGD) approach in coal mines. The characteristic model of VLC for underground coal mines is presented by classifying the area of the mine into mine gallery and sub-galleries. The transmission links of VLC are categorized as the line of sight (LOS) link for direct propagation and the non-LOS (NLOS) link for reflected propagation. The scenarios of LOS and NLOS propagation are considered for each evaluating parameter. Furthermore, the performance of the proposed framework is examined by computing the received signal power, path loss, delay spread (DS), and signal to noise ratio (SNR).

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Section: Shadowingmentioning

confidence: 99%

Characteristic Study of Visible Light Communication and Influence of Coal Dust Particles in Underground Coal Mines

et al. 2021

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“…As this system is not designed for data communication, the authors do not provide any information regarding BER and data rate performance. In [378], Farahneh et al also proposed an alarm system by hybridizing PLC Ethernet and OWC technologies. Noting that authors did not specify any data rate values and did not validate results with experiments, they presented the BER performance under different levels of shadowing.…”

Section: B Owc-iogt Applicationsmentioning

confidence: 99%

A Top-Down Survey on Optical Wireless Communications for the Internet of Things

Çelik¹,

Romdhane²,

Kaddoum³

et al. 2022

Preprint

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The Internet of Things (IoT) is a transformative technology marking the beginning of a new era where physical and digital worlds are integrated by connecting a plethora of uniquely identifiable smart objects. Although the Internet of terrestrial things (IoTT) has been at the center of our IoT perception, it has been recently extended to different environments, such as the Internet of underWater things (IoWT), the Internet of Biomedical things (IoBT), and Internet of underGround things (IoGT). Even though radio frequency (RF) based wireless networks are regarded as the default means of connectivity, they are not always the best option due to the limited spectrum, interference limitations caused by the ever-increasing number of devices, and severe propagation loss in transmission mediums other than air. As a remedy, optical wireless communication (OWC) technologies can complement, replace, or co-exist with audio and radio wave-based wireless systems to improve overall network performance. To this aim, this paper reveals the full potential of OWC-based IoT networks by providing a top-down survey of four main IoT domains: IoTT, IoBT, and IoGT. Each domain is covered by a dedicated and self-contained section that starts with a comparative analysis, explains how OWC can be hybridized with existing wireless technologies, points out potential OWC applications fitting best the related IoT domain, and discusses open communication and networking research problems. More importantly, instead of presenting a visionary OWC-IoT framework, the survey discloses that OWC-IoT has become a reality by emphasizing ongoing proof-of-concept prototyping efforts and available commercial off-the-shelf (COTS) OWC-IoT products.

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“…An application of a light fidelity (LiFi) communication system for underground mines is presented in [27], which allows the sending of emergency messages in the mine. Another application of a VLC-based alarm system for mining environments is presented in [28]. Finally, several works that applied localization in mining environments based on VLC systems are presented in [29][30][31][32].…”

Section: Vlc Channel Models Applied To Underground Mining Environmentsmentioning

confidence: 99%

Interference Mitigation for Visible Light Communications in Underground Mines Using Angle Diversity Receivers

Játiva

Cañizares

Azurdia-Meza

et al. 2020

Sensors

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This paper proposes two solutions based on angle diversity receivers (ADRs) to mitigate inter-cell interference (ICI) in underground mining visible light communication (VLC) systems, one of them is a novel approach. A realistic VLC system based on two underground mining scenarios, termed as mining roadway and mine working face, is developed and modeled. A channel model based on the direct component in line-of-sight (LoS) and reflections of non-line-of-sight (NLoS) links is considered, as well as thermal and shot noises. The design and mathematical models of a pyramid distribution and a new hemi-dodecahedral distribution are addressed in detail. The performances of these approaches, accompanied by signal combining schemes, are evaluated with the baseline of a single photo-diode in reception. Results show that the minimum lighting standards established in both scenarios are met. As expected, the root-mean-square delay spread decreases as the distance between the transmitters and receivers increases. Furthermore, the hemi-dodecahedron ADR in conjunction with the maximum ratio combining (MRC) scheme, presents the best performance in the evaluated VLC system, with a maximum user data rate of 250 Mbps in mining roadway and 120 Mbps in mine working face, received energy per bit/noise power of 32 dB and 23 dB, respectively, when the bit error rate corresponds to 10 − 4 , and finally, values of 120 dB in mining roadway and 118 dB in mine working face for signal-to-interference-plus-noise ratio are observed in a cumulative distribution function.

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A new alarming system for an underground mining environment using visible light communications

Cited by 13 publications

References 12 publications

Characteristic Study of Visible Light Communication and Influence of Coal Dust Particles in Underground Coal Mines

Characteristic Study of Visible Light Communication and Influence of Coal Dust Particles in Underground Coal Mines

A Top-Down Survey on Optical Wireless Communications for the Internet of Things

Interference Mitigation for Visible Light Communications in Underground Mines Using Angle Diversity Receivers

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