Ammunition and explosives – Mines – Counter measure
Patent
1994-08-30
1995-10-17
Jordan, Charles T.
Ammunition and explosives
Mines
Counter measure
89 113, B63G 706, B63G 900
Patent
active
054580633
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a demining device. In partcular, the present invention provides a device designed to initiate a magnetic influenced mine from a distance.
In existing demining devices a magnetic field generating coil is attached to the front part of a demining vehicle, for example a tank, such as disclosed in German Pat. No. DE 3 444037.
The coil is linked to an electrical feed circuit which provides a current enabling a magnetic field to be generated. As a general rule, the electric feed circuit enables the current to be shaped in such a way that the magnetic field generated by the coil is similar to that of the simulated vehicle.
The shape of the current is provided by means of an electronic memory which pilots a power generator.
The major disadvantage of such a demining device is its enormous power consumption, with the existing demining devices having a continuous power consumption, of more than 2000 Watts. With such a power consumption it is not possible to use such a demining device over a long period without damaging the operational characteristics of the vehicle. An additional source of power consumption includes the requirement of the demining device to effectively operate at a great distance in the driving direction while the demining vehicle is in motion.
SUMMARY OF THE INVENTION
An object of the present invention is to propose a demining device which consumes less power than existing devices.
The invention also enables a magnetic field to be supplied near to a field generated by a real vehicle. It is therefore no longer necessary to rely on an electronic memory to pilot a demining vehicle.
The invention proposes a simpler, more compatible and less expensive demining device than known devices, wherein such a simplification has not led to a deterioration in its demining performances.
The present invention provides these and other features in a demining device, designed to initiate a magnetic influenced mine from a distance comprising a magnetic field generating coil and its electric feed circuit, the feed circuit comprising a capacitance mounted in parallel on the coil terminals and circuit breaker enabling this capacitance to be connected to and disconnected from a voltage source.
In one preferred embodiment, the circuit breaker periodically activates a sequence comprising a connection followed by a disconnection.
According to one particular embodiment of the invention, the circuit breaker comprises a transistor wherein the Drain is connected to the capacitance and the Source is connected to the voltage source, the transistor Gate receiving the pulses supplied by a electrical control circuit.
According to one variant, the capacitance is constituted by two electrochemical capacitances connected in series to one another by means of one of their electrodes of the same sign, each capacitance being shortcircuited by a diode enabling a current to pass in the opposite direction to that of the capacitance in question.
According to a second embodiment of the invention, the voltage source comprises a capacitor and the circuit breaker is comprised of a commutator which connects the capacitor to the power supply when the capacitance has been disconnected.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be better understood after reading the description which will follow of the particular embodiments of the invention, a description which refers to the accompanying figures in which:
FIG. 1 represents a skeleton diagram of a demining device according to the invention,
FIG. 2 is a curve illustrating the shape of the current flowing through the coil in the device according to the invention,
FIG. 3 represents a diagram of circuit breaking means used in the device according to the invention,
FIG. 4 represents a skeleton diagram of a variant of the demining device according to the invention,
FIG. 5 represents a skeleton diagram of a second embodiment of the demining device according to the invention,
FIG. 6 represents two curves which illustrate, for a device
REFERENCES:
patent: 3040658 (1962-06-01), Maltby
patent: 3170399 (1965-02-01), Hinman, Jr.
patent: 3707913 (1973-01-01), Lee
patent: 3835784 (1974-09-01), Miller et al.
patent: 3921530 (1975-11-01), Burkhardt et al.
patent: 4012641 (1977-03-01), Brickerd, Jr. et al.
patent: 4601243 (1986-07-01), Ueda et al.
patent: 4615268 (1986-10-01), Nakano et al.
patent: 4685396 (1987-08-01), Birse et al.
patent: 4884506 (1989-12-01), Guerreri
patent: 4938136 (1990-07-01), Gould
patent: 4993325 (1991-02-01), Slone, Jr. et al.
patent: 5027709 (1991-07-01), Slagle
patent: 5323726 (1994-06-01), Olsson
patent: 5361675 (1994-11-01), Spektor et al.
Arnaud Philippe
Laine Loic
Giat Industries
Jordan Charles T.
Montgomery Christopher K.
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