| 摘要 |
systems of protection of various objects against access of strangers. SUBSTANCE: the electronic lock has a power supply, sealed-contact reed relay, actuating unit, radio transmitter, radio receiver, means for coding, the first and second oscillatory circuits, means of frequency conversion, permanent magnet, multiplier, narrow- band filter, multiple delay line, phase inverters, adder, selector, the first and second spectrum analyzers, comparison unit and a threshold unit. EFFECT: enhanced noise immunity, reliability, secrecy. 2 dwg |
