Patent ID: 8618931

Claim:
A position-monitoring device for persons in a tunnel system ( 10 ), having an evaluation device ( 5 , 6 ), the position monitoring device comprising: a locally distributed arrangement of transceiver units (SE 1 , . . . , SE 4 ) each equipped with a wireless data-transmission device and installed in spaces to be monitored in the tunnel system ( 10 ) at fixed anchor points (A 1 , A 2 , . . . , An) known to the evaluation device ( 5 , 6 ); the tunnel system ( 10 ) being divided into subsections ( 10 . 1 , 10 . 2 , 10 . 3 , 10 . 4 ) classified into different hazard levels, and related classification data are stored in the evaluation device ( 5 , 6 ) and are or can be associated with determined position data; the persons equipped with mobile sensors (S 1 , S 2 , . . . , Sn); the transceiver units equipped with data-transmission interfaces by which can be placed in a wireless data-transmitting connection to the mobile sensors (S 1 , S 2 , . . . , Sn) and placed in a wired or wireless data-transmitting connection to the evaluation device ( 5 , 6 ); and programs determining a subsection position of the persons on a basis of detection data of the transceiver units being stored in the evaluation device ( 5 , 6 ).