Modify Selection
- Equipment, tools, and parts:
- Communications equipment
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- Through-the-earth communications systems
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- Medium frequency communications systems
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- Leaky feeder communications systems
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- Node-based communications systems
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- Wireless node communications systems
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- Mine phones
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- Radios
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- Pager phones
- Document types:
- Peer reviewed journal articles
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Results 1 - 10 of 16
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3/1/1975 - Peer reviewed journal articlesThe theoretical study of UHF radio communication in coal mines, with particular reference to the rate of loss of signal strength along a tunnel, and from one tunnel to another around a corner is the concern of this paper. This work was part of an invest...
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10/4/2019 - Peer reviewed journal articlesThis paper reports the influence of antennas on radio signal propagation in tunnels and underground mines.
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3/5/2019 - Peer reviewed journal articlesAn article presenting the selection, configuration and testing methodologies employed by NIOSH researchers to integrate commercially available land mobile data radios into an existing leaky feeder communication system to provide IP data transport.
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5/1/2018 - Peer reviewed journal articlesAn article presenting an FMM-FFT-SIE full-wave simulator used to characterize EM wave propagation in electrically large and loaded mine environments.
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12/1/2017 - Peer reviewed journal articlesAn article presenting the results of a feasibility study on Industrial Internet of Things (IIoT) applications in underground coal mines based on existing communication and tracking infrastructure.
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9/1/2017 - Peer reviewed journal articlesA paper presenting the simulation and measurement results of recent NIOSH research aimed at investigating current injection at extremely low-frequency, and in particular, ground contact impedance.
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5/1/2017 - Peer reviewed journal articlesAn article that discusses how wall roughness affects radio propagation in tunnels, and presents a unified ray tracing and modal method for modeling radio propagation in tunnels with rough walls.
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1/1/2017 - Peer reviewed journal articlesAn article that proposes two physics-based, deterministic ultra-wideband (UWB) channel models for characterizing wireless channels in mining/tunnel environments — one in the time domain and the other in the frequency domain.
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10/1/2016 - Peer reviewed journal articlesAn article which presents the simulation and measurement results of recent NIOSH research aimed at investigating medium frequency coupling between a transmission line and a loop antenna in an underground coal mine.
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2/1/2015 - Peer reviewed journal articlesIn this study, the propagation characteristics of three types of medium frequency transmission lines in two layouts were obtained in an effort to understand the propagation characteristics of different transmission lines in different locations.
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Content source: National Institute for Occupational Safety and Health, Mining Program