The invention discloses a downhole multifunctional personnel location distress
system which comprises a location
server, a monitoring terminal, a wire communication subsystem,
wireless communication base stations and a distress calling device. The wire communication subsystem mainly comprises optical fibers, an optical splitter and a
wireless switch. Each
wireless communication
base station comprises an explosion-proof box, a power supply, a standby battery, a wireless access device, an antenna
isolator and antennas. The distress calling device comprises an acquisition subsystem, a location subsystem, a communication subsystem, a display subsystem, a control subsystem and a storage subsystem. The wireless communication base stations are arranged in the pit at intervals and are connected with the wireless switch and the location
server through the optical fibers. The distress calling device and the wireless communication base stations are in
bidirectional communication based on a wireless mode. The distress calling device can be located accurately. The downhole multifunctional personnel location distress
system can be used to monitor a person using the distress calling device, has multiple distress calling functions, can support search-and-rescue when existing communication facilities are damaged and do not work, and is a synthetic
system integrating mine personnel tracking and locating, dispatching management, and distress call and search-and-rescue after disasters.