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The emergency communication solution in tunnels

release date:2025-08-22
Tunnels have characteristics such as narrow space and complex environment. Once an accident occurs, existing communication methods may fail, resulting in a lack of emergency communication and hindering the smooth progress of rescue operations. In response to the characteristics of tunnels such as closed space and difficult information transmission,  BelFone has comprehensively utilized technologies such as emergency communication, broadband Trunking, multi-base station networking, indoor high-precision positioning, and satellite communication to launch a tunnel emergency communication solution. This solution features portable equipment, flexible deployment, and adaptability to tunnel environments. It can quickly establish communication in extreme conditions such as no network and no power in tunnels, and open up audio, video, and data transmission channels between the front line of the tunnel, the on-site command center, and the rear command center. It supports functions such as unmanned detection of on-site conditions, data collection, monitoring of rescue personnel locations, on-site emergency command, and rear collaborative command, facilitating the close cooperation of various emergency rescue forces and ensuring efficient and smooth communication for tunnel emergency rescue. 

Poor communication inside tunnels can easily lead to the disconnection of rescue personnel from the outside world. The tunnel emergency communication solution builds the backbone transmission network and data access network through the BF-TR925 Ad hoc network base station, ensuring smooth communication between the rescue site and the command center, allowing leaders and experts outside the tunnel to see and hear the situation inside. 

The tunnel environment is relatively confined, and the internal situation is unclear after an accident, which greatly increases the difficulty of rescue. The tunnel emergency communication solution supports the connection of various tunnel perception devices and video monitoring devices, enabling real-time monitoring of change in the tunnel's internal conditions. Combined with high-precision positioning functions, it presents rescue personnel and equipment in a three-dimensional model, providing a strong guarantee for the command center's decision-making, resource allocation, and coordinated response. 

Lightweight and portable equipment , ready to use immediately with a quick response. 


The environment in tunnels is complex, and carrying heavy equipment makes movement difficult, which will greatly affect the implementation of emergency rescue work. The tunnel emergency communication solution is oriented towards practical application. The main equipment is lightweight and portable, and can be carried by a single soldier. The key system can be started with one click to complete the startup, enabling rapid implementation of emergency rescue and meeting the requirements for rapid response to emergencies. 

Flexible and resilient emergency network can adapt to harsh environmental conditions. 


After a tunnel accident, there are many rocks, sand and mud, and ordinary equipment is prone to malfunction and failure, with severe equipment wear and tear. The front-end equipment of the emergency communication solution for the BelFone all meet the IP67 or higher protection level, and the radios meet the IP68 protection level. They can still maintain good performance under temperature fluctuations and strong vibrations, ensuring the resilience and anti-destruction of the emergency communication network, and better meeting the communication needs in the harsh environment of the tunnel.