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Active proximity warning system for surface and underground mining applications.

Authors
Schiffbauer-WH
Source
Min Eng 2002 Dec; 54(12):40-48
NIOSHTIC No.
20023101
Abstract
The U.S. National Institute for Occupational Safety and Health (NIOSH) developed an active proximity warning system called hazardous area signaling and ranging device (HASARD) for warning workers as they approach known dangerous areas around heavy mining equipment and other dangerous work zones. HASARD is composed of a transmitter and a receiver. The transmitter generates a 60-kHz magnetic field using one or more wire loop antennas. Each antenna is adjusted to establish a magnetic field pattern for each hazardous area. The receiver, which is worn by the worker; is a magnetic field strength meter. The received signal is compared against preset levels that are calibrated to identify levels of danger: The receiver outputs can include visual, audible and vibratory indicators, and it can also be made to disable machine functions. HASARD was field tested on a Joy 12 continuous miner; a Komatsu 210 M Hauula and on a high wall launch vehicle. Slight modifications were made for each application. HASARD provided warnings as designed, and it proved to be rugged enough to withstand the harshest of production environments.
Keywords
Miners; Mining-equipment; Mining-industry; Warning-systems; Warning-devices; Warning-signals; Magnetic-fields; Magnetic-properties; Hazards
CODEN
MIENAB
Publication Date
20021201
Document Type
Journal Article
Funding Type
Construction
Fiscal Year
2003
NTIS Accession No.
NTIS Price
Issue of Publication
12
ISSN
0026-5187
NIOSH Division
PRL
Priority Area
Disease and Injury: Traumatic Injuries
Source Name
Mining Engineering
State
PA
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