INTERLOCKING UNIT FOR RADIO CONTROLLED BLASTING DEVICES Russian patent published in 1998 - IPC

FIELD: blasting operations. SUBSTANCE: interlocking unit for radio controlled blasting devices has wide-band noise oscillator, transmitting antenna, modulator, two additional noise oscillators which outputs are connected to transmitting antenna fabricated in the form of flexible open stub attached to metal bottom of vehicle. Distance between bottom and stub is not less than 0.1% of maximum length of wave of electromagnetic field of radiated noise. Unit also includes switching-on and-off device, first and second passive nonlinear electric elements which outputs are connected to insulated conductors of stub antenna whose other conductors are linked to outputs of additional noise oscillators, actuator of radio line of remote switching-on of interlocking unit which output is connected to first input of switching-on and-off device, time relay which output is connected to second input off switching-on and-off device. First inputs of additional noise oscillators and of wide-band noise oscillator are connected to switching-on and-off device. Output of modulator is connected to inputs of first and second passive nonlinear electric elements, to second inputs of additional noise oscillators and second input of wide band noise oscillator. Propose interlocking unit is designed to prevent remote blasting of motor vehicles ( cars and trucks ) and other objects on which radio controlled blasting devices are put without authorization. EFFECT: increased safety of running of motor vehicles. 1 dwg