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Waveform generator for (EM) location of trapped miners.
Collins Radio Group Rockwell International
Cedar Rapids, IA: U.S. Department of the Interior, Bureau of Mines, OFR-9-75, :1-25
This report describes a circuit for driving a low-frequency loop antenna from a miner's cap lamp battery. The circuit is a miniature waveform generator and is part of the electromagnetic (em) trapped miner location system. Two engineering models were designed, constructed, and tested, and 50 final production units were fabricated using discrete component construction. A final discrete potted printed circuit configuration was developed that is now ready for field testing.
Accident-prevention; Injury-prevention; Coal-miners; Coal-workers; Mine-disasters; Mine-rescue; Miners; Disaster-prevention; Personal-protective-equipment; Safety-equipment; Safety-measures; Safety-monitoring; Safety-research
CP; Final Contract Report
NTIS Accession No.
Cedar Rapids, IA: U.S. Department of the Interior, Bureau of Mines, OFR-9-75
Collins Radio Group, Rockwell International
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division