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Mining Publication: Development of a Visual Display and Control System
Keywords: Communication lines Communications Pager phones Signalling
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: October 1980
Authors: Arthur D. Little, Inc.
Contract/MOA Report - October 1980
Download PDF Document (1.34 MB)
NIOSHTIC2 Number: 10002144
Arthur D. Little, Inc. U.S. Bureau of Mines Contract No. J0177020. NTIS No. PB/81-222374, 1980; :1-31
The object of this program was to extend the capabilities of visual paging systems both in size and functions in mines. The system developed uses the mine pager phone line for communication, monitoring, and remote control. A central station, using a minicomputer, transmits signals by phase inversion modulation of a 16,384-hz carrier to as many as 999 remote units. The remote unit addressed returns an echo to indicate that it is functioning and, in the case of monitor units, to convey the monitor data. Magnetically latched display disks, which can be seen from both sides when posted, are used for visual paging. Lists of the addresses of posted pages, unanswered pages, and nonechoing units are prepared by the central station computer. The system was designed to be intrinsically safe and should operate for 3 months on a 12-volt lantern battery.
Image of publication Development of a Visual Display and Control SystemContract/MOA Report - October 1980
Download PDF Document (1.34 MB)
NIOSHTIC2 Number: 10002144
Arthur D. Little, Inc. U.S. Bureau of Mines Contract No. J0177020. NTIS No. PB/81-222374, 1980; :1-31
See Also
Control and Monitoring Via Medium Frequency Techniques and Existing Mine Conductors
Experience with an Integrated, Computer-Controlled Communications and Monitoring System at the Robena Mine
The Implementation of UHF Radio Communications and CCTV Monitoring Systems in a Room and Pillar Metal/Non-metal Mine
Propagation of EM Signals in Underground Metal/Non-Metal Mines
Propagation of EM Signals in Underground Mines
Technical Bulletin Pager Phones: Circuit Protection
Technical Bulletin Pager Phones: Installation
Technical Services for Mine Communications Research: Task A, Task Order No. 1 - Applicability of State-Of-The-Art Voice Bandwidth Compression Techniques for Wireless Mine Communication
Theory on the Propagation of UHF Radio Waves in Coal Mine Tunnels
U.S. Bureau of Mines New Developments in Mine Communications
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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