REMOTE ANTI-PERSONNEL NON-CONTACT EXPLOSIVE DEVICE Russian patent published in 2023 - IPC F42B23/10 F42C13/00 

FIELD: explosive devices.

SUBSTANCE: remote anti-personnel non-contact explosive device contains an actuator, a seismic transducer, a preamplifier, a bandpass filter, an amplifier, a rectifier-integrator, an automatic gain controller, and a three-level threshold device installed at the output of the rectifier-integrator connected in series. The low level output of the three-level threshold device is connected to the input of the automatic gain control. The outputs of the high and medium levels of the threshold device are connected to the inputs of the classifier of a moving person's step, which contains a circuit for controlling the rate of increase of the seismic signal envelope, a circuit for controlling the duration of the signal created by the person's step, and a circuit for controlling the duration of the pause between steps. One output of the classifier is connected to the input of a temporary device, which is configured to determine the processing time of signals coming from the seismic transducer, and to the input of the step counter. The second output of the classifier of a moving person's step, configured to control the required duration between two successive steps, and the output of the timing device are connected, respectively, to the first and second inputs of the logical addition circuit. The output of the circuit is connected to the reset input of the step counter. The device additionally contains a wireless communication module configured to receive radio signals to set it in “active mode” and “inactive mode”, a signal delay element, a trigger, and an “AND” logic element circuit. The first output of the wireless communication module, which determines the installation in the “active mode,” is connected through a signal delay element to the trigger reset input and the third input of the logical addition circuit. The second output of the wireless communication module, which determines the setting to the “inactive mode,” is connected to the second input of the trigger, the output of which is connected through an “AND” logic element circuit to the fuse actuator. The second input of the AND gate circuit is connected to the output of the step counter. The output of the AND gate circuit is connected to the input of the wireless communication module to transmit a signal to activate the fuse actuator.

EFFECT: increase of safety and efficiency of using an explosive device due to remote control of its blocking.

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