SYSTEM AND METHOD FOR PERCEIVING SPATIALLY-ISOLATED PERSON FROM GROUP ON FIELD TRIPS

摘要

A system and a method for recognizing a seceder from a group are disclosed. The system according to the present invention comprises a plurality of member terminals and a leader terminal. The member terminals are carried by each of a plurality of members performing a group activity, and transmit a wave having a radio frequency. The leader terminal is carried by a leader of the group activity, receives the waves transmitted from each of the member terminals to detect intensities of the waves, acquires distances among the member terminals from the detected intensity of the wave, acquires a reference distance based on the acquired distances among the member terminals, and outputs an alarm when at least one distance between two member terminals is longer than the reference distance. Therefore, relative positions among group members rather than between the leader and each of the group members are tracked, the distances among the relative positions are processed statistically so that a seceder, who secedes from a group, is recognized quickly, and the leader is notified of the seceder. Then, the leader recognizes the seceder in an early stage, thereby preventing various accidents including disappearance.