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US 4,056,061 AGranted
Proximity fuse
AssigneeTexas Instruments Incorporated
InventorOrville A. Becklund
Life of this patent
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AssigneeTexas Instruments Incorporated
InventorOrville A. Becklund
Estimating the term…
1. An infrared proximity fuse comprising means to transduce infrared radiation intensity into the amplitude of an electrical signal, first circuit means including a low pass filter connected to filter substantially all frequencies except DC from said electrical signal, thus generating a DC output signal, second circuit means including a high pass filter connected to filter substantially all low frequencies from said electrical signal, thus generating an AC output signal, a demodulator having as its input said AC output signal from said second circuit means to produce a DC signal corresponding to the amplitude of said AC output signal, a gate circuit means having as inputs said DC output signal from said first circuit means and said DC signal corresponding to the amplitude of said AC output signal, said gate circuit means having means to generate an output signal solely during an interval when said DC output signal is above a maximum preset level and said DC signal corresponding to the amplitude of said AC output signal is below a minimum preset level, a detonator, and means responsive to production of the output signal of said gate circuit means to energize said detonator.
An infrared proximity fuse comprising means to transduce infrared radiation intensity into the amplitude of an electrical signal, first circuit means including a low pass filter connected to a filter substantially all frequencies except DC from said electrical signal, thus generating a DC output signal, second circuit means including a high pass filter connected to filter substantially all low frequencies from said electrical signal, thus generating an AC output signal, a demodulator having as its input said AC output signal from said second circuit means to produce a DC signal corresponding to the amplitude of said AC output signal, a gate circuit means having as inputs said DC output signal from said first circuit means and said DC signal corresponding to the amplitude of said AC output signal, said gate circuit means having means to generate an output signal solely during an interval when said DC output signal is above a maximum preset level and said DC signal corresponding to the amplitude of said AC output signal is below a minimum preset level, a detonator, and means responsive to production of the output signal of said gate circuit means to energize said detonator.
An infrared proximity fuse comprising a detonator, means to actuate said detonator, gate means for applying an output signal to said means to actuate said detonator, an infrared transducer to detect infrared energy and convert said energy to corresponding electrical signals, a pair of parallel paths electrically interconnecting said transducer and said gate means, one of said parallel paths including a low pass filter and the other of said parallel paths including a high pass filter and a demodulator, said gate means producing an output signal in response to the signal in one of said parallel paths being above a minimum preset level and the signal in the other of said parallel paths being below a maximum preset level whereby said means to actuate said detonator, in response to an output signal from said gate means, actuates said detonator.
Dependencies are inferred from the claim text.