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Improved rail haulage communications.

Authors
Dobroski-H Jr.
Source
Proceedings of the Fourth WVU Conference on Coal Mine Electrotechnology, August 2-4, 1978, Morgantown, West Virginia. Morgantown, WV: West Virginia University, 1978 Aug; :29.1-29.14
NIOSHTIC No.
20032402
Abstract
Communications with moving tracked vehicles in a rail haulage mine pose a difficult problem. These communications take place from dispatcher to vehicles or from vehicle to vehicle via the trolley line, which is a very poor communications line. As a result, deadspots and high-signal areas can occur anywhere along the line, or signal can decrease simply as a function of distance. An analysis is made of the trolley line as a communications line, and methods of improving its characteristics are discussed. Data from in-mine experiments are presented, showing actual improvements in communications. Recent Bureau developments in new hardware are also discussed. These include an adaptive speaker control for existing carrier phones and a new generation of improved carrier phones.
Keywords
Mining-industry; Mining-equipment
Publication Date
19780802
Document Type
Conference/Symposia Proceedings
Fiscal Year
1978
NTIS Accession No.
NTIS Price
NIOSH Division
PRC
Source Name
Proceedings of the Fourth WVU Conference on Coal Mine Electrotechnology, August 2-4, 1978, Morgantown, West Virginia
State
PA; WV
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