NIOSH-sponsored research in through-the-earth communications for mines-a status report-

Yenchek, M.R.; Homce, G.T.; Damiano, Nicholas W.; Srednicki, Justin

doi:10.1109/ias.2011.6074387

Cited by 20 publications

(22 citation statements)

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“…The proposed method allows to design a volume efficient,up to 3×3 array or a pyramidal shaped 4 × 4 array. It can be used in MIMO, or in multiple-frequency communication, and may be beneficial in applications where the channel capacity is low [28]. Results are validated experimentally, producing a volume efficient array with coupling coefficients between elements as low as 10 −8 .…”

mentioning

confidence: 72%

Magnetic Induction Antenna Arrays for Mimo and Multiple-Frequency Communication Systems

Tal¹,

Morag²,

Levron³

2017

PIER C

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Abstract-In magnetic induction communication systems, channel capacity is often a major bottleneck that limits the system performance. This paper proposes a method to increase the channel capacity in such systems by means of an antenna array. A central challenge in the design of magnetic antenna arrays is to achieve low intra-array coupling along with high gain. These two properties are essential for increasing the channel capacity in comparison to single antenna communication systems of comparable volume.The method proposed in this paper utilizes circular loop antennas to reduce the intra-array coupling using magnetic flux cancellation.The mathematic approach employed in this paper considers each coil as a system of coupled inductors, where each inductor is a single turn loop, and the total coil self and mutual inductances are computed by summing the appropriate single turn loop inductances. Volume efficient coil topologies are identified, and an optimization method is proposed to minimize the intra-array coupling, subject to a required inductance. The proposed method allows to design volume efficient, up to 3 × 3, array, or pyramidal shaped 4 × 4 arrays. The results are verified experimentally using the multiple-frequency communication mode.

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confidence: 72%

Magnetic Induction Antenna Arrays for Mimo and Multiple-Frequency Communication Systems

Tal¹,

Morag²,

Levron³

2017

PIER C

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“…In order to explain the data more clarity, we calculate the receive data rate of total amount data. The equation is as (5). …”

Section: B Experimental Results and Analysismentioning

confidence: 99%

A novel security monitoring system of coal mine based on power line communication dynamic routing technology

Zhang

Liu

2014

2014 IEEE Industry Application Society Annual Meeting

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This paper presents a novel security monitoring system of mine based on power line communication; with networking and routing technology, an artificial cobweb routing of security monitoring communication system is established to ensure the reliability of data communication in the system, and improve the reliability and validity of the PLC-based security monitoring system. This paper describes in detail the overall hardware and software framework of the system, the design communication terminal nodes, the mine communication network model and network structure based on artificial cobweb. The experiment results about the delay and throughput show that this system can achieve real-time monitoring of underground mines, sound and light alarm and two-way data communication with the control center on the ground, providing new ideas and guiding methods for mine security monitoring system design and development.

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“…The use of modern technology for improved safety measures is mutually beneficial to both the employer and the employees, because they make the mining companies operate more sustainably and responsibly and also protects the mineworkers. Therefore, technology is intrinsically linked to safety standards in the mines, as it has the potential to prevent accident and to rescue trapped or injured workers during operations (Yenchek et al, 2012). …”

Section: The Potential Of Technologymentioning

confidence: 99%

The intricacies and challenges of ensuring safe and healthy mining environments in South Africa

Ntsuxeko

Odeku

2017

Environmental Economics

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In South Africa, during the apartheid era, the mining sector had records of extremely high injuries and occupational diseases that led to massive death of mine workers who were predominantly Blacks. In the post-apartheid era, measures such as monitoring, inspections, investigations and regulatory interventions have been introduced to identify hazards with the aim of minimizing and eliminating the risk to health and safety of mine workers. However, despite these interventions and measures, the pace of ensuring total eradication of accidents and fatalities is slow and there is a need to accelerate it, as every life is important. This can only be realized if there is substantial improvement in the implementation, enforcement and compliance with legislation, measures and policies that have been put in place to curb accidents, diseases and fatalities in the mining sector. This article examines the effectiveness of the interventions, points out the weaknesses and provides viable solutions for improvement. The article also highlights the importance of trade unions and technologies as catalysts to drive and improve safety standards in the mining environments.

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NIOSH-sponsored research in through-the-earth communications for mines-a status report-

Cited by 20 publications

References 0 publications

Magnetic Induction Antenna Arrays for Mimo and Multiple-Frequency Communication Systems

Magnetic Induction Antenna Arrays for Mimo and Multiple-Frequency Communication Systems

A novel security monitoring system of coal mine based on power line communication dynamic routing technology

The intricacies and challenges of ensuring safe and healthy mining environments in South Africa

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