Position-monitoring device for persons in a tunnel system

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 (SE1, . . . , SE4) each equipped with a wireless data-transmission device and installed in spaces to be monitored in the tunnel system (10) at fixed anchor points (A1, A2, . . . , 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 (S1, S2, . . . , Sn);
• the transceiver units equipped with data-transmission interfaces by which can be placed in a wireless data-transmitting connection to the mobile sensors (S1, S2, . . . , 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).