FIELD: signalling.
SUBSTANCE: invention relates to security alarm, in particular to multizone radio detection methods of intruders. For this purpose, a cable communication line is made high-frequency for supplying a high-frequency received signal from modules to a central unit, providing successive activation of modules starting from the nearest to the central unit, each module is provided with serial operation in one of three modes - radiation of probing signal, reception of emitted signal and translation of received signals along cable line to central unit so that mode of signal reception in each module corresponds to time mode of radiation of probing signal in next module and mode of translation in all previous modules for supply of received signals to central unit for amplification and processing.
EFFECT: technical result is simplification of multizone detection method of intruder due to transfer of main functions of signal reception and processing from modules to central unit and simplification of module synchronization system.
6 cl, 5 dwg
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