Tunnel environments are enclosed and complex. As supporting transportation infrastructure for a World Cultural Heritage site, they place extremely high demands on visitor safety, emergency command and dispatch, and road condition information delivery. In emergency scenarios such as vehicle breakdowns, fires, and traffic congestion, traditional communication methods are prone to signal interruption and delayed command delivery, making them unable to meet the needs of rapid response and efficient coordination. Based on the traffic characteristics and structural features of tourist tunnels, Becke Telcom customized and deployed an industrial-grade integrated emergency broadcasting and intercom solution.
Core Customer Requirements
Emergency Broadcasting and Information Announcements: The system supports scheduled daily broadcasts for tourism notices, traffic updates, and safety instructions. In emergencies, it can quickly initiate tunnel-wide or zone-specific emergency broadcasts to ensure that evacuation instructions and safety alerts are delivered immediately to drivers, passengers, and inspection personnel.
One-Touch Calling and Two-Way Intercom: Tunnel inspection personnel and drivers or passengers can use emergency terminals to place one-touch calls to the control center, enabling hands-free two-way communication for rapid incident reporting and prompt receipt of response instructions.
Multi-System Integration and Linkage: The solution can be integrated with the tunnel’s existing surveillance system, alarm system, and ventilation and lighting systems, allowing alarm signals to automatically trigger broadcast announcements, video retrieval, and equipment actions.
High Reliability and Environmental Adaptability: Equipment must be suitable for harsh tunnel conditions such as humidity, dust, and electromagnetic interference, ensuring stable 24/7 operation, while critical links support redundancy backup.
Centralized Dispatching and O&M Management: The control center can centrally manage all terminal devices in the tunnel, enabling status monitoring, remote configuration, and recording playback to improve maintenance efficiency and incident traceability.
Solution Deployment
Core System Architecture
Control Center Layer: Becke Telcom deploys a converged dispatch server and dispatch console at the control center as the core of the system, responsible for command delivery, status monitoring, conference scheduling, and data storage.
Transmission Layer: Based on the tunnel’s existing fiber-optic LAN, the system uses the standard SIP protocol to enable high-speed and stable communication between the control center and tunnel terminals.
Terminal Layer:
Emergency Intercom Terminals: Yellow waterproof and dustproof emergency telephones are installed at key points such as tunnel sidewalls, escape passages, and maintenance shafts. These terminals support one-touch calling and hands-free intercom, and are designed for harsh tunnel environments.
Alarm Linkage Modules: These modules interface with smoke detectors, heat detectors, vehicle detectors, and environmental monitoring devices, enabling alarm signals to automatically trigger broadcast announcements in the corresponding area.
Key Functions
Multi-System Coordinated Response
When the alarm system detects emergencies such as fire, excessive carbon monoxide levels, or stranded vehicles, it automatically triggers broadcasting in the corresponding area to play evacuation instructions, while also activating the tunnel ventilation and lighting systems. At the same time, the dispatch console automatically displays the relevant surveillance feed to support command decision-making.
High-Reliability O&M Assurance
All terminal devices are designed to industrial-grade standards, with a protection rating of IP66 or above to withstand humid and dusty tunnel environments. The system supports real-time device status monitoring and fault alarms, while critical equipment adopts hot-standby redundancy to ensure uninterrupted communication.
Application Results
Improved Emergency Response Efficiency: In emergency situations, command delivery time is reduced from several minutes under traditional methods to just seconds, buying valuable time for evacuation and incident handling.
Enhanced Safety Assurance: By combining broadcasting and intercom, the solution achieves full-scenario coverage that ensures people can hear, respond, and stay connected, effectively reducing the risk of secondary accidents in the tunnel and improving travel safety for visitors and commuters.
Optimized Operations Management: Centralized dispatch management simplifies maintenance workflows, while recording playback provides data support for accident analysis and responsibility determination, improving the level of refined tunnel operations management.
Strong Scenario Adaptability: The solution is well suited to the different lengths and tourism traffic characteristics of the Baotang Tunnel and Longgang Tunnel, meeting the safe operation requirements of scenic area transportation infrastructure.
Conclusion
Based on the operational needs of the tunnels along the Baodingshan–Beishan Express Link, Becke Telcom deployed an emergency broadcast and intercom solution that enables reliable communication for both daily information broadcasting and emergency command and dispatch, significantly improving tunnel operation management and emergency response capabilities.
