With the rapid development of the domestic economy, the number of highway and highway tunnel construction projects has increased and the problem of safe tunnel operation has become more and more prominent. In addition to the quality of the civil construction of the tunnel itself, the monitoring and control of the tunnel has become a safe and normal operation of highway tunnels. important topic. The tunnel monitoring includes ventilation, power supply, and lighting. The industrial Ethernet switch adopting the optical fiber redundant ring network structure is the backbone communication control network. The bus network of the control part communicates with the various substations. The management part identifies the Ethernet connection screen and the highway MIS. , GIS, GPS charging systems and monitoring stations to achieve information sharing.
The entire system consists of server workstations in the monitoring center, downwards including the tunnel area controller PLC, and hanging on the industrial Ethernet switch fiber optic network, and completes the conditions and parameters of the on-site equipment through the real-time monitoring software HMI. In real-time display, the system uploads real-time data collected on site according to a predetermined program to the main server. Finally, the equipment adopts an intelligent measurement and control unit fieldbus method to signal traffic, lighting, and ventilation of the tunnel site equipment. The regional controller PLC performs on-line real-time monitoring, out-of-control process control, and remote maintenance. The Zhuhai tunnel has a left tunnel with a length of 1680 meters and a right tunnel with a length of 1,560 meters. Its backbone communication monitoring network system uses JetNet 4006f-s to build a ring network architecture and connect to the main control room through the JetCon 1301-s extended distance.
JetNet 4006f-s 6-port managed industrial Ethernet switch, single mode
MSR, single-mode optical fiber redundant ring network junction special working environment (applicable to -10°C ~70°C) Industrial Protection IP31, overcome the wet and dusty working environment in the tunnel