Patent ID: 6931339

Claim:
A compass and communication system to transmit azimuth data to a remote location comprising: a compass sensor module having: a waterproof housing; a mounting mechanism on said housing to engage a headgear worn by an operator; a two-axis gimbal mechanism inside said waterproof housing, said two-axis gimbal mechanism having a protective housing connected to said waterproof housing, said protective housing containing ring structure and two orthogonal axis structures; a magnetic field sensor unit mounted on one of said axis structures, said magnetic field sensor module providing magnetic field data signals representative of the direction faced by the operator, said mounting mechanism transmits horizontal yawing motions of the operator to said gimbal mechanism and said magnetic field sensor unit; and a processor electronics section connected to said magnetic field sensor unit providing data signals representative of azimuth from said magnetic field data signals; and a data transmission module having: an electrically insulated conductor connected to said compass sensor module; an amplifier stage connected to said insulated conductor for amplifying said azimuth data signals; an electrically insulated cable extending from said amplifier stage for remotely transmitting said azimuth signals thereon; and a transceiver/display console at a remote location connected to said cable to receive and display said remotely transmitted azimuth data signals.