From torch to LED lamps and lanterns to explore the history and future of tunnel lighting

As a kind of human traffic mode, tunnel is an underground space consisting of a half closed structure. Because of its special structure, the sunlight in the tunnel can not be directly shot, and the daylight needs to be illuminated. The lighting system is one of the most important facilities in the modern tunnel engineering, and the lighting system is in a long working state when the tunnel lighting is put into use. The origin of the tunnel traced back to the period of the spring and Autumn period and the Warring States period, and Qin had chilled the first individual tunnel of the world "commendatory chute". History has a cloud: "the path of a thousand miles, through the Shu Han, make the world all fear the Qin." The tunnel lighting was used as a torch, very simple and very inconvenient. In the modern period, with the development of industrialization, the tunnel traffic gradually increased and the tunnel lighting developed gradually. In the middle of nineteenth Century, the tunnel lighting was mainly kerosene and gas lamp, until the end of nineteenth Century, the electric lights were gradually applied to the tunnel lighting. In the early 90s of last century, the simple tunnel lighting era of the commendatory beacon site was very few in the early 90s of the last century. The tunnel lighting facilities are more difficult to talk about. Most of the tunnels on the road are not illuminated or only a few street lamps are suspended. The quality of the lighting is very low. At this time, the tunnel lighting only stays to meet the simple lighting requirements. . In the present time, with the continuous innovation of technology, the development of tunnel lighting has made great progress. Even in the era of simple lighting, the tunnel lighting source has experienced the development process from incandescent lamp, fluorescent lamp, high pressure mercury lamp, low pressure sodium lamp and high pressure sodium lamp. The light source of tunnel lighting breaks through the light efficiency, luminous flux, life, light color and color display, and creates a better tunnel lighting environment. Since the age of intelligent tunnel lighting entered the twenty-first Century, the development of LED lighting technology has been becoming more and more strong, and LED lighting has gradually occupied most of the market of tunnel lighting. The LED light source has the characteristics of high luminous efficiency, high color rendering coefficient, long life, high efficiency, energy saving and ultra-low power consumption, and the LED lamp has a perfect dimming function. It can change the level of tunnel lighting at any time according to the factors such as day, night and the size of vehicle flow. By integrating network technology such as WiFi and ZigBee, the LED lamp is a tunnel illumination. The age of intelligent lighting is ushered in Ming Dynasty. In 2007, the domestic LED road and tunnel lighting market began to form. In the first 5 years, many manufacturers neglected the heat dissipation of LED lighting, which had caused the failure rate of LED Road, tunnel and other lighting projects as high as 90%, which misled the opinion that LED lighting technology was "not mature enough to wait for the development trend". At the same time, at the same time, Shanghai San thought with its own original heat dissipation, lighting layout and other technologies, developed 148 LED Road, tunnel lighting projects, the 250 thousand high power LED lamps and lanterns all run stable. The first LED tunnel lighting project in China, the LED lighting project of Jiangxi Jingying high speed tunnel, was evaluated by the Ministry of communications by the Ministry of communications of the state as a demonstration project of energy conservation and emission reduction, and the project of Shanghai San Si LED lamps and lanterns, the Fujian Nan Hui Expressway Tunnel, was evaluated by the development and Reform Commission, the Ministry of Finance and the Ministry of transportation and transportation as the highway tunnel LED Lighting national demonstration project. The intelligent control system of tunnel tunnel lighting of Fujian Nan Hui Expressway in Jiangxi Jingying high speed tunnel can support a variety of intelligent lighting modes in addition to the reasonable illumination distribution according to the lighting requirements of different sections, such as lighting for tunnel lighting, lighting near the entrance and exit of the tunnel. It is closer to the normal outdoor light, gradually decreasing from both ends to the middle, in order to reduce the "black hole, white hole effect" and improve the driving safety; at the same time, it can automatically adjust the function of brightness to the appropriate position according to the time period, season, weather and so on. The lighting system has different scene modes to realize intelligent management, so as to ensure the intelligent management. Traffic safety. In this respect, the intelligent lighting project of Shaanxi tussah tunnel, which is built by Shanghai San Si, has been rated as a national demonstration project. In addition to the Shaanxi tussah tunnel, the LED application products and intelligent control system of Shanghai San thought are also used in Yunnan Dali highway tunnel, Chongqing Zhangjia mountain tunnel, Hunan cool water well tunnel, Shanghai Dalian road tunnel, Beijing Jingcheng expressway, Yunnan Pu Xuan highway tunnel, G85 Chongqing Kunming Expressway Ma Zhao tunnel and Hong Kong Zhuhai Macao tunnel. A large tunnel project, such as the deep sea tunnel of the bridge, has been built or built. In recent years, with the acceleration of urbanization process, people pay more and more attention to the safety and comfort of road traffic. The intelligent control technology for tunnel lighting is becoming more and more high. With the continuous development of new technology and new technology, the intelligent control technology of tunnel lighting will also be "more energy-saving, more comprehensive and more comfortable" "The direction of the development.