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Mining Publication: Development of a Closed Circuit TV Borehole Probe

NOTE: 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: September 1984

Image of publication Development of a Closed Circuit TV Borehole Probe

This report describes a 4-in diameter borehole probe which contains a low light level television camera, magnetic compass, light illumination source, bottom-water detector sensor, and a point angle sensor. The camera viewing angle is at a right angle to the probe's body. All data from the sensor are multiplexed into the closed-circuit camera video for transmission on a single 50-ohm coaxial cable to a surface control unit. Likewise, control of the probe's power, zoom lens, focus, panning, and aperture is accomplished via a downlink multiplexed on the same cable.

Authors: D Talley

Contract/MOA Report - September 1984

NIOSHTIC2 Number: 10004671

Design Engineering Laboratories, Inc. U.S. Department of the Interior, Bureau of Mines, Contract No. H0308041. NTIS No. PB/85-240414, 1984; :1-22