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A system for powering and communicating with a mine or mine simulator, involving magnetic induction coupling between a powered search unit with a resonating primary inductance coil and a secondary inductance loop in the mine device. The current in the secondary loop is rectified in the mine device t

A system for powering and communicating with a mine or mine simulator, involving magnetic induction coupling between a powered search unit with a resonating primary inductance coil and a secondary inductance loop in the mine device. The current in the secondary loop is rectified in the mine device to provide dc power. The magnetic induction frequency can be in the range from 40 kHz to 1 MHz. The search unit can resonate sequentially or simultaneously at different frequencies, and rectification of the different frequencies in the mine device can provide information to the mine device. Feedback to the search unit can be by the mine device modulating the impedance of its secondary loop, for instance at an audio frequency 1/10th of the frequency of the induction coupling, and by detecting in the search unit the corresponding change in the reflected impedance. A mine device can be armed or disarmed, and report on its status when queried by the search unit coming sufficiently close to the mine device. A mine device can have a selectable active period during which it can kill a tank and provide a corresponding kill signal to the tank crew, be limited to only one kill, delay its arming to allow its planting or withdrawal of the search unit providing the arm signal, etc. A kill signal can be received with a 10 watt power input into a search unit on a tank, while maintaining a clearance of 5 feet from the ground.

대표청구항 ▼

A system comprising a transportable search unit including a primary loop in which ac current is resonated to generate an oscillating magnetic field of at least one respective predetermined frequency, power supply means connected with said search unit for providing power to said search unit, includin

A system comprising a transportable search unit including a primary loop in which ac current is resonated to generate an oscillating magnetic field of at least one respective predetermined frequency, power supply means connected with said search unit for providing power to said search unit, including for said generating of said magnetic field, a mine device including a secondary loop for being inductively magnetically coupled with said primary loop and to resonate at said at least one predetermined frequency when said search unit approaches said mine device, power conversion means for deriving power from said resonating secondary loop, and signalling means powered by said derived power from said power conversion means for providing a signal indicating that said search unit attained sufficient proximity to said mine device as determined by the extent of the inductive magnetic coupling between said primary and secondary loops, and reception means transported with said search unit for receiving said signal, for indicating thereby said attainment of said sufficient proximity, wherein information is transferred from said mine device to said reception means at a frequency different from each said predetermined frequency of the resonation of the primary loop for the magnetic induction coupling with said secondary loop.