Patent ID: 7649283

Claim:
A system for remotely powering a plurality of electrically powered sensors, comprising: a primary coil connected to a power source wherein the primary coil is adapted for mounting exterior to a closed vessel hull having an interior and an exterior, the power source generates an electrical alternating current in a frequency range of 100 to 500 kHz in said primary coil in a continuous wave mode, the plurality of sensor coils is adapted for mounting exterior to the vessel hull; and a plurality of electrically powered sensors having internal electronic circuitry, wherein said plurality of electrically powered sensors is spaced apart from the primary coil at a fixed distance, wherein each individual sensor's electronic circuitry is joined to an individual sensor coil wherein a current in the primary coil inductively couples to the plurality of sensor coils to induce a corresponding current in each one of the plurality of sensor coils, the corresponding current activating the internal electronic circuitry of each of said plurality of electrically powered sensors, thereby powering said plurality of electrically powered sensors.