Industrial Switch Solution of Tunnel Monitoring System

Due to its narrow space, low visibility and complex environment inside the tunnel, it is difficult to control safety in the operation and management process. The tunnel integrated monitoring system is composed of control, closed circuit television, tunnel environmental information inspection, automatic fire alarm, traffic control, ventilation and lighting control, emergency telephone, tunnel broadcasting and other systems. Through the real-time monitoring at the entrance, middle section and exit of the tunnel, the real-time image status inside the tunnel, as well as the data information such as the inspection of the traffic flow and flow rate in the tunnel, the inspection of the working state of the ventilation equipment and the inspection of the parameters of the power equipment are obtained, so as to ensure the stability of the tunnel operation and the good environment and avoid the occurrence of tunnel accidents.

System requirements of tunnel monitoring system for Industrial Switches:

Through reliable optical fiber Ethernet ring network, it has strong recovery ability and timely response;

The network is stable and reliable without packet loss;

High bandwidth Gigabit / 10 Gigabit backbone network to ensure the stable transmission of monitoring video and business data;

Support VLAN, ACL, QoS and other data processing to ensure priority transmission of monitoring data;

Industrial design standard, support wide temperature, meet the requirements of harsh working environment on industrial site.

Our industrial switch tunnel monitoring system solution:

Vehicle detector, fixed gun digital camera, Lane indicator and tunnel connecting tunnel indicator are set in the tunnel inner field; The outdoor field of the tunnel is provided with billiard type digital camera with cloud, variable speed limit sign, portal frame variable information sign, traffic signal light, etc. Finally, the traffic conditions of the monitored sections will be transmitted to the monitoring center in real time. In the tunnel monitoring system, the communication network adopts the ring network networking scheme to form an optical fiber redundant ring network to realize network communication redundancy. The use of optical fiber extends the transmission distance. Each detection controller of Houshi is equipped with Ethernet communication interface to connect with the industrial switch. It communicates with the tunnel monitoring system server of the monitoring management center through the ring network communication optical cable of the traffic monitoring switches, and enables the monitoring center to grasp and control the traffic conditions in the tunnel in real time.

Among them, the intelligent monitoring system in the tunnel is mainly used to detect and suppress fire and provide protection for passing vehicles. The temperature detector can detect the fire, the carbon monoxide detector is used to detect the air quality, and the camera is used to monitor the traffic flow and pictures. Once an accident occurs in the tunnel, the management center can be notified promptly. When an accident occurs, the system will automatically activate the lighting system and ventilation system, and broadcast the event location and site conditions in time to provide real-time road conditions for vehicles in other sections.

Since the system needs real-time update and transmission of video, broadcast, information and emergency alarm data, a communication network with high bandwidth, high density and high reliability must be established in the whole tunnel. Our special serial port server is used to connect various bus controllers and upload the data collected by various sensors in real time; IS2000 series industrial switches are used to gather video, broadcast and alarm light data, and cooperate with IS3000 series industrial switches to form a full gigabit optical fiber ring network through optical fiber interface. In order to facilitate the monitoring and troubleshooting of the whole network, the tunnel communication network uses our NIS industrial switch network management software to centrally manage the whole network.

Features of the tunnel monitoring system solution of our industrial switch:

The industrial switch adopts WL ring Ethernet redundancy technology, and the ring network recovery time is ≤ 20ms;

All industrial switches are equipped with optical ports to meet the requirements of long-distance transmission;

The industrial switch supports port binding, port mirroring, 802.1x, QoS and other functions to ensure network security;

Industrial level hardware design standard, meeting IP40 and EMC level 4 standards;

The industrial switch meets the working temperature of - 40 ~ 85 ℃ and the working humidity of 5% ~ 95%, and adopts dual power redundancy design;

MTBF (mean time between failures) of industrial switches up to 300000 hours