Earth Ear Underground Listening System
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Function of the System
Designed for use with outdoor trenchless horizontal boring equipment, the Earth Ear 200 Underground Listening System's function is to alert the “locator” and “driller”
(drilling machine operator) when the drill head is hitting an
unknown object other than normal soil. The alert signal is the audible change in
sound which occurs when the drill head hits a hard object such as a pipe, conduit,
concrete, rock bed, etc. as compared to the normal sounds heard when drilling
through soil or the strata expected for the work location.
Description of the System
The Earth Ear 200 is a custom built, portable battery-powered wireless broadcast system which transmits the sounds created underground by the process of Directional Boring. The basic components of the system are an FM band base station transmitter, a cell phone sized mobile personal receiver and a microphone. All equipment is contained within a rugged 25" x 20" x 12" weatherproof case. The
The number of potential individual listeners is limited only to the number of personal receivers worn within the system’s operating range. When utilizing the Earth Ear system, the directional boring crew member known as the “locator” can add his sense of hearing to assist the visual sensory tools provided by the Drill Head Monitor equipment in detecting the unseen activities of the drilling work. Being a wireless broadcast system, the Earth Ear also allows any other member of the drilling crew, supervisors or other visitors to the work site to listen in on the activities of the drilling work being performed.
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