MOVABLE AND STATIONARY OBJECTS COMPLEX SECURITY METHOD Russian patent published in 2000 - IPC

FIELD: protection of vehicles and buildings. SUBSTANCE: invention relates to security systems designed for protection of vehicles and real estates in regions covered by radiotelephone and paging communication networks. Two stage vehicle location procedure is used in proposed system. First coordinates are determined by cellular method to decrease initial zone of searching of hijacked vehicle, and then coordinates are defined more exactly by mobile prompt-response squads having direction finder receivers. Alarm signals are transmitted by paging network both to vehicle owner and two vehicle for blocking the motion. Use of transponder card prevents false alarm. System provides decrease of degree of dependability of vehicle location accuracy from vehicle position relative to elements of urban infrastructure and base stations. EFFECT: reduced time taken for finding the vehicle and decreased risk of road accidents when arresting the transgressor. 1 dwg