ELECTRONIC LOCK Russian patent published in 2001 - IPC

FIELD: protection of various objects against access of strangers. SUBSTANCE: the device has on the object of guard switching components made in the form of a mechanical lock with electronical contacts, actuating units, radio transmitter, radio receiver, master oscillator, phase shifter, scaling multiplier, modulating code generator, phase manipulator, delay line, phase detector, storage unit, correlator, threshold unit, winding of the alarm relay, alarm contacts, remote selector switch with antiphase windings, hermetically sealed reed relay, audible alarm, current-limiting resistor, light-emitting diode indicator, power source. At the receiving station it has a radio receiver, narrow-band filters, band-pass filter, phase shifter, scaling multiplier, phase detector, indicator. The means for coding has tuned circuits, means for frequency conversion, modulating code generator, phase manipulator, power source. EFFECT: enhanced noise immunity, reliability, security. 2 dwg _