Electromagnetic communications and switching system

摘要

An electromagnetic communications and switching system provides for line-of-sight remote selection and actuation of a wide variety of apparatus. The system has a plurality of radiating antennas having independent components defining a reference coordinate frame. A transmitter is provided for applying electrical signals to the antennas which generate a plurality of radio frequency electromagnetic fields. The signals are multiplexed so that the electromagnetic fields are distinguishable from one another. An array of control positions is provided that is fixed with respect to the reference coordinate frame. A plurality of receiving antennas are provided which are adapted for mounting on the head of an operator. The receiving antennas are provided with independent components for detecting and measuring the components of the electromagnetic fields. A sight couples the eyes of the operator and the array of control positions. The sight is mounted on the head of the operator and defines a line-of-sight for the operator. A processor is provided for converting the components of the electromagnetic fields received by the receiving antennas into the position and orientation of the receiving antennas with respect to the radiating antennas. Using the sight, the operator selectively points to a desired control position and the processor determines which control position is being chosen by determining the position and orientation of the operator's head and thus the line-of-sight of the operator.