FIELD: emergency situations.
SUBSTANCE: invention relates to a positioning system for radio frequency tags in a building for emergency evacuation management. The system contains radio frequency tags receiving control codes and transmitting an identifier code, connected wirelessly with readers transmitting control codes and receiving signals of tags identifier codes, a server designed to receive wirelessly the identifier codes of each tag and information about its location from the reader, connected by wireless Internet to a mobile or stationary terminal the device of the decisionmaker, the gateways located on each floor of the building, each tag is connected via a first-level radial radio channel to a reader within the premises and to readers of adjacent premises, readers located in each room of the building are connected via a second-level radial radio channel to a floor gateway, gateways are connected via a third-level radial radio channel to a server, each reader is designed to determine the level of signals of radio frequency tags and fix the time of their receipt, additionally contains a selector of the levels of the tag signals, including a transceiver with an antenna, analog-to-digital converter, unit for storing the signal code of the previous cycle tag, subtractor, digital comparator of the increment sign, unit for generating the difference module, digital comparator of increment, logical element “AND” for position code generation, logical element “AND” for recording signal generation, position code memory unit, synchronizer, transmitter of the position code of the tag with antenna, a tag address generator.
EFFECT: increase in the accuracy of determining the location and identification of tags in the premises of the building.
1 cl, 3 dwg
