MULTI-ZONE RADIO-WAVE ALARM SYSTEM Russian patent published in 2015 - IPC G08B13/24 

FIELD: radio engineering, communication.

SUBSTANCE: multi-zone radio-wave alarm system further includes a set of distributed antennae in the form of sections of a radio-frequency coaxial leaky wave cable with peripheral wireless modems connected at opposite ends of the sections. The length of the sections of said cable is comparable or equal to the range of the local detection zone, and a central radio control panel based on two-way digital programmable control of synchronous receive-transmit operating modes of the peripheral wireless modems and antennae forms additional two-way sensor radio links of the "discrete antenna - distributed antenna", "distributed antenna - distributed antenna" type, interfaced in space with nonlinear forms of the periphery and the relief of the monitored areas of an uneven terrain.

EFFECT: broader functional capabilities of multi-zone radio-wave alarm systems when used on the periphery of nonlinearly shaped facilities on an even terrain with vegetation.

2 cl, 8 dwg