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Atekon Technology's PLC Powers the Intelligent Opening of Wuhu Longwan Yangtze River Tunnel—the "First Tunnel Along Wanjiang"
Release date:
2025-07-10
The Wuhu Longwan Yangtze River Tunnel, with a total length of 5,965 meters and a width of approximately 29 meters, boasts a total investment of 5.569 billion yuan. As Anhui Province's first under-river tunnel, it has earned the title "The First Tunnel Along the 800-Li Wanjiang River." On July 1, 2025, the Wuhu Longwan Yangtze River Tunnel officially opened to traffic, marking another milestone as Aotuo Technology's PLC, renowned for its exceptional stability and reliability, successfully enabled the tunnel to achieve intelligent and automated management.
The Wuhu Longwan Yangtze River Tunnel, with a total length of 5,965 meters and a width of approximately 29 meters, boasts a total investment of 5.569 billion yuan. As Anhui Province's first under-river tunnel, it has earned the title of "The First Tunnel Along the 800-Li Wanjiang River." On July 1, 2025, the Wuhu Longwan Yangtze River Tunnel officially opened to traffic, marking a significant milestone as Aotuo Technology's PLC solutions—renowned for their exceptional stability and reliability—successfully enabled the tunnel to achieve intelligent and automated management.
The tunnel BAS system is the intelligent core of modern tunnel safety operations.
Security Guardian>>>
Real-time monitoring of harmful gases, temperature, humidity, and other environmental parameters, integrated with the Fire Alarm System (FAS), automatically activates smoke exhaust and switches the status of lane indicator lights during a fire, thereby enhancing evacuation efficiency.
Energy-Saving Butler>>>
It can automatically adjust ventilation levels based on traffic flow and schedule lighting switches to enhance illumination, enabling precise energy consumption management.
Operations & Maintenance Prophet>>>
Centrally monitor the operational status of mechanical and electrical equipment (such as ventilation, drainage, etc.), enabling fault early warning and predictive maintenance, thereby enhancing equipment reliability while reducing maintenance costs.
In this project, Aoto Technology achieved comprehensive intelligent control of the Longwan Yangtze River Tunnel's BAS system, deploying a total of 50 PLC units to manage over 450 large-scale equipment and sensors.
Aoto Technology's PLC Breakthroughs and Application Advantages in Tunnel BAS Systems
01 Harsh Environment Adaptability
PLC equipment features excellent protection ratings and stability, enabling it to withstand the tunnel's unique environment characterized by high humidity, strong electromagnetic interference, and dusty conditions.
02 Innovative Core Technologies in Intelligent Control
The PLC program enables millisecond-level real-time response, effortlessly handling complex logic decisions while precisely coordinating the coordinated control of multiple subsystems, including ventilation, lighting, and fire protection.
03 High-Reliability Communication System Design
By employing a redundant architecture and anti-interference protocols, the system ensures stable and reliable signal transmission among long-distance distributed I/O modules, effectively preventing communication interference.
04 Comprehensive Scenario Reliability Assurance
The PLC is equipped with a comprehensive fault-tolerance mechanism and emergency response plan, enabling seamless transitions across various operational scenarios—including normal operation, fire emergencies, and flood protection—while ensuring the system runs continuously and reliably.
Aoto Technology Tunnel BAS System Solution
Core Control System>>>
Adopting ATO NA400 + NA300 series PLCs
Environmental Monitoring and Equipment Control>>>
Real-time tunnel environmental data is collected via equipment such as CO2 detectors, wind speed and direction detectors, and CO/VI/NO2 detectors, enabling automatic adjustment of ventilation and lighting system operations.
Automatically control the pump's on/off operation based on changes in the sump well water level.
Emergency Coordination Control>>>
Rapidly activate smoke control solutions in emergencies such as fires
The integrated traffic monitoring system controls equipment such as over-height detectors and lane indicator lights.
Coordinated control of traffic lights and audio-visual alarms
Remote Monitoring and Management>>>
All devices connect to the tunnel integrated monitoring platform.
Implement remote monitoring and management features
Aoto Technology's PLC application in the Wuhu Longwan Yangtze River Tunnel has not only enhanced the tunnel's operational management efficiency and reduced operating costs, but also provided drivers and passengers with a safe and comfortable driving environment. As technology continues to advance and application scenarios expand, Aoto Technology's PLC will shine brightly in more fields, contributing to the development of smart transportation and smart cities.
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Aoto Technology Co., Ltd.
