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Mine Personnel Locator and Mine Activity Controller. Final Report.

Farstad AJ; Robinson LR; Saum GH
NTIS: PB/82-235979 :187 pages
Recent advances in microcomputer technology have opened the way for systems that can track the location of underground mining personnel from the surface. A computerized system was designed that is capable of not only tracking the location of the miner but also of monitoring underground parameters, communicating between work stations, and sounding alarms when underground conditions are judged to be unsafe. In this report the locations of underground personnel are detected by a network of underground terminals that routinely emit radiofrequency (rf) pulses to interrogate miniature transponders worn by the miners. Each transponder is uniquely programed to delay its response so that the rf terminal can identify the individual transponders by the time slots in which the responding pulses are received. The underground terminals are then interrogated by the host computer on the surface that keeps a running account on underground mine conditions and personnel. The underground portion of the system is designed to operate even during mine emergencies, deriving its power from rechargeable battery supplies that are float charged during normal operation.
Publication Date
Document Type
CP; Final Contract Report;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
OFR 80-82
NIOSH Division
Source Name
NTIS: PB/82-235979
Performing Organization
Nelson & Johnson Eng., Inc.
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division