METHOD OF NON-CONTACT BLASTING OF AMMUNITION BY FUSES WITH LASER DEVICES Russian patent published in 2019 - IPC F42C13/02 

FIELD: military equipment.

SUBSTANCE: invention relates to military equipment and can be used in non-contact explosive devices of various ammunition. Method of non-contact detonation of ammunition by means of fuses with laser devices consists in the fact that a pulse laser emitter and a pulsed photodetector are installed in the detonating fuse. Using laser emitter continuously with frequency ƒ electromagnetic pulses of duration τ and wave length λ. Pulsed photodetector receives electromagnetic radiation with a wavelength λ, including electromagnetic pulses with wavelength λ reflected from the object, which are generated by the laser emitter. Signals from the photodetector are amplified. Information from the photodetector amplifier is divided and for each period of time T, equal to 1/ƒ, are supplied to different inputs "A" and "B" of the first logic device. At the input "A" information is transmitted in the period of time T, and to the input "B" of the first logic device, information is transmitted at the moments of time corresponding to the duration ΔT=(l/ƒ)-τ. First logic device for each time period T=(l/ƒ) for each output "A" and "B" issues a conditional "1" command, when the signal level at the input is more than the specified signal level, and issues a conditional "0" command, when the signal level is less than the specified level. For each period of time T commands with conditional values "0" or "1" from outputs of the first logic device with inputs "A" and "B" are transmitted to corresponding two inputs "A1" and "B1" of the second logic device, which at output outputs conditional command "1" if and only when at input "A1" signal with conditional value is greater than at input "B1", and outputs conditional command "0" if and only if at input "A1 "Signal with conditional value is less than or equal to signal at input "B1". Signals from the output of the second logic device with conditional value "1" are transmitted to the pulse counter. With the help of the pulse counter, the device counts the number of signals with the conditional value "1" for the specified time K>T and sends a command for ammunition blasting at the moment when the value K exceeds the given number P.

EFFECT: invention increases reliability of countering false, interference signals.

1 cl, 1 dwg