The Mine Rescue Operations Wireless Communication System ensures communication in the mining excavation during activities related to the rescue operation.
The underground fresh-air base station and rescue teams communicate via a radio network. The communication between the rescue operation manager on the surface and the fresh-air base station is carried out by wire via a switched telecommunication line, dry leased line, or single-mode fiberoptic line.
The system consists of the following elements:
- fresh air base station (optional)— used to communicate with rescue operation office on the surface and to communicate with the rescue teams by the wireless temporary infrastructure set up by battery radio nodes; it allows monitoring of the operation and position of all components of the system, also providing radiophones tracking and many alarming functions
- battery radio node — used to form temporary wireless network infrastructure; provides straightforward setup just by turning on and placing a node approximately every 50m (50 steps); the network is not affected by enabling or disabling of any node, and if fully charged, it operates continuously for 5 days.
- radiotelephone — is used for audio communication with fresh air base operators or with other rescuers equipped with radiotelephones; the communication discipline can be arranged according to specific needs and legal requirements; radiotelephone provides many other rescue operations and functions