foreword
Transportation is the key to the development of a country, and the transportation routes extending in all directions play a vital role in the development of the country's economy and society.
construction background
With the continuous development of social economy and the steady progress of urbanization, the scale of highway engineering in my country has gradually expanded. The construction of highway engineering directly affects the future development of cities and people's transportation. Tunnels are the main content of highway engineering construction.
According to the data released by the Ministry of Transport, as of the end of 2021, there are 23,268 highway tunnels in my country, with a total length of 24.6989 million meters, and a compound growth rate of about 14.73%; .
In this context, the tunnel management problem has always been one of the problems that expressway managers need to solve urgently, especially the tunnel status monitoring problem.
The traditional manual management method has disadvantages such as low degree of informatization, unintuitive display, and low management efficiency. In the context of a country with strong transportation, 2021 is the beginning of the "14th Five-Year Plan". Many documents issued emphasize strengthening tunnel information. management.
System Overview
With the rapid development of computer technologies such as the Internet of Things, Web visualization, and Web real-time communication, it provides a technical basis for an intuitive tunnel visualization system. The smart tunnel system is developed based on the Sovit3D visualization platform based on the B/S structure of the digital map. Through the intelligent perception units on both sides of the tunnel, combined with the high-definition camera at the tunnel entrance, the IoT sensor, the GPS unit and the radio frequency identification unit for tracking moving objects and the geological The advanced forecasting system is connected to form the Internet of Things, which can achieve full coverage of the entire tunnel with high cost-effectiveness, real-time and accurate display of vehicle ID, lane-level vehicle position and trajectory in the tunnel, and make various traffic incidents invisible.
System functions
Comprehensive Situation Dashboard
Through 3D modeling, the tunnel scene and surrounding environment and equipment are highly restored, and an interactive Web 3D scene is built relying on the Sovit3D visualization platform, and 2D monitoring data panels are displayed on the left and right sides. Focusing on application scenarios such as "equipment management and control, safety early warning, active prevention and control, emergency dispatch, low-carbon energy saving, electromechanical maintenance, and comprehensive collaboration", realize "one tunnel, one screen" operation collaborative management and comprehensive data display, and finally realize the real-time monitoring of tunnels. "One picture" visual management.
video surveillance system
Supports seamless fusion of video monitoring functions, dynamic monitoring of the tunnel, and linkage with positioning and on-site cameras. When an emergency alarm event occurs, accurate positioning video camera viewing is supported. Parallel viewing of multiple camera windows is supported. Check out the video of the scene.
Equipment management system
There are a large number of lighting, fans, water pumps, indicators, information boards, power supply and other equipment in the tunnel. By clicking, you can view certain types of equipment, including equipment information, equipment quantity, equipment failure, etc.; support quick positioning based on the alarm information sent by the equipment. Operation and maintenance personnel can understand the status and maintenance of equipment, including processed and unprocessed numbers, etc., and display the location and time information on the 2D kanban.
Intelligent Control System
Device control and strategy control through 2D+3D mode. Diversified control is realized through tunnel ventilation system, tunnel lighting system, video surveillance system, fire rescue system, fire alarm system, information board release system, etc.
Intelligent Lighting System
According to the traffic flow, visibility, light intensity, traffic events and other data under different working conditions, the system forms an intelligent solution for lighting system switch and brightness, realizes automatic lighting adjustment, ensures safety, saves energy and reduces consumption.
Smart Ventilation System
By collecting and analyzing data such as traffic flow, average speed of traffic vehicles, waste emissions, CO content, visibility, etc. under different working conditions in the tunnel, an intelligent solution for fan start-up and control is formed to realize timely ventilation of the tunnel and ensure tunnel safety. Reduce energy consumption.
Smart inspection system
Switch to the inside of the tunnel to check the working status of each device and see if there is any abnormality. Electronic inspection has very high requirements for real-time data. Only real-time collection and real-time update of equipment status data can ensure the effectiveness of inspection work. During the inspection process, the user can click on the device to view the key parameter information of the device, and control the start and stop of the device, adjust the device parameters and other operations.
Intelligent alarm system
Through the Internet of Things technology and sensors, real-time monitoring of the status of equipment in the tunnel, timely alarm for abnormal situations and provide processing suggestions to improve the level of safety management.
Intelligent emergency handling
Real-time linkage control to realize rapid emergency response to emergencies. Using visual recognition technology, the system can accurately detect emergencies such as fire alarms, abnormal parking, spilled objects, and non-motor vehicle intrusions in the tunnel at the millisecond level, and accurately identify the location of the event, the scope of influence, and the concentration of harmful gases. Intelligently recommend corresponding disposal plans.
……
(Disclaimer: The above functions are for reference only, more system functions are subject to actual needs)
Development Technology
Based on the concept of digital twins, taking highway tunnels as objects, relying on the Sovit2D/Sovit3D visualization platform, the overall structure of the tunnel and the distribution of equipment are presented in a three-dimensional manner by means of three-dimensional visualization, and the monitoring of the environment in the tunnel and the status of equipment are intuitively displayed. Operating status, traffic flow, etc., have the characteristics of thorough perception, comprehensive interconnection, deep integration, and intelligent services, and realize the visualized management and application of tunnel data.
construction value
The digital twin smart tunnel 3D visualization system takes "safety improvement, efficient rescue, maintenance improvement, low-carbon energy saving, and digital governance" as the construction goals, and constructs various scenarios such as dispatch coordination, operation management, energy conservation and emission reduction, and digital control to ensure Operational safety of the tunnel. Through the construction of an integrated management and control platform, the project has realized multi-screen display, refined management, digital twin control, perception and early warning, equipment control, cloud adjustment linkage, and collaborative processing. Through the combination of advanced technology and management mode, safe and efficient tunnel operation management is realized.
Summarize
Smart tunnel is through the application of various advanced technologies and means, through digital modeling and visual display, it can realize the simulation and prediction of real perception, and realize the intelligent service and management of the tunnel, so as to improve the safety and efficiency of the tunnel.