Research On Intelligent Monitoring Methods And System In Urban Road Tunnel

With the rapid development of urban construction, the phenomenon of urban traffic jam tends to be serious. Urban road tunnel is increasing to solve such problems as transport facilities and urban traffic congestion as soon as possible. Tunnel current monitoring equipment and monitoring program have been basically mature, but the cost performance is not high enough to achieve automatic control. Software integration and extend ability need improvingUrban highway tunnel is not only a city's traffic throat, but also the city's landscape. Therefore, the composition of the monitoring system not only complies with regulatory requirements, but needs to consider the characteristics of urban tunnels as well. The tunnel, once opened, if not a last resort, is unlikely to be closed for repairs because the city transportation network will be greatly affected. Hence, system reliability, stability, maintainability and ease of operation should be taken into full account.From technical point of view, digital and intelligent on-line detection instrumentation should be employed. The control system should adopt flexible regional on-site control. The function of the system must be intelligent linkage mechanism, such as the fire alarm system and fire fighting system linkage. Ventilation control system should consider not only the tunnel environmental parameters, but also traffic flow and channel share and so on.This paper firstly analyzes the relevant specifications and characteristics of urban highway tunnel, puts forward a framework of the city's highway tunnel intelligent monitoring system; studies the multi-sensor fusion methods and flexible control technology and multi-sensor data fusion algorithm based on D-S evidence theory in the urban highway tunnel monitoring system. For the long tunnel of the city, it proposes distributed flexible control technology, which expands flexible control system of the city tunnel, divides urban highway tunnel into distributed flexible distributed control system and local centralized flexible control system. Then, the paper focuses on the intelligent method in the ventilation system and drainage system applications. According to the aerodynamics, it studies the basic control method of ventilation in the urban highway tunnel and introduces fuzzy control technology. It also designs a control model of ventilation based on fuzzy control technology. The paper supplies a ventilation control algorithm based on BP fuzzy neural network. Based on fuzzy inference neural network, a control model for urban highway tunnel drainage is established through the analysis of the tunnel according to corresponding standards. Then, based on FCM clustering, a fuzzy neural network control algorithm for drainage is proposed.Urban highway tunnel intelligent monitoring system can be used as a part of the Urban Intelligent Transportation. Intelligent traffic monitoring system as a method of solution to the problems of the complex urban transport system, has a strong feasibility and a great value of practical application. It will be the direction of the rapid development of industrialization. Its design and study show the vital practical significance.