The SWAR-2EX is an advanced wireless communication system meticulously engineered to ensure reliable and efficient communication during mine rescue operations. This system provides robust connectivity within the mining excavation, facilitating seamless coordination between the underground fresh-air base station, rescue teams, and the surface operation manager.

Seamless Underground Communication: The SWAR-2EX system facilitates uninterrupted communication via a sophisticated radio network, enabling the fresh-air base station and rescue teams to remain in constant contact. This ensures swift and accurate exchange of information critical to rescue operations.

Versatile Surface Communication: Communication between the rescue operation manager on the surface and the fresh-air base station is conducted through multiple wired options, including switched telecommunication lines, dry leased lines, or single-mode fiber optic lines. This flexibility ensures reliable surface-to-underground connectivity.

The system consists of the following elements:

• fresh air base station (optional) — The fresh-air base station serves as a pivotal communication hub, linking the surface rescue operation office with the rescue teams underground. It operates through a wireless temporary infrastructure established by battery-powered radio nodes. The base station enables real-time monitoring of system components, tracking radiophones, and providing various alerting functions to enhance operational safety and efficiency.
• battery radio node — These nodes are the backbone of the temporary wireless network infrastructure. Designed for simplicity, they are activated and positioned approximately every 50 meters (about 50 steps) to establish the network. The system’s resilience ensures network stability regardless of individual node status. Fully charged nodes can operate continuously for up to five days, ensuring extended operation during prolonged rescue efforts.
• radiotelephone — Radiotelephones are vital for audio communication, allowing rescue team members to communicate with fresh-air base operators and other rescuers. The system supports customizable communication protocols to meet specific operational and legal requirements. Radiotelephones also offer various rescue operation functions, enhancing the overall effectiveness of the response.