Tunnel Based On PLC LED Intelligent Lighting System Design And Implementation

Highway speed fast, heavy traffic, high standards for highway tunnel lighting, tunnel lighting power. High brightness lighting will corrupt the lamp for a long time, and change frequently, so optimum design of tunnel lighting is all the more important.Paper according to national on tunnel lighting of needs of related specification, combines environment brightness, and speed and traffic volume is tunnel lighting brightness of decided elements, and Fudan University electric light Institute proposed of middle Visual and Chongqing AC section by proposed of equivalent brightness, lighting theory, using new LED lamps has no level adjustable light of features, through video breezed device to detection vehicles of exists, and speed and traffic volume, illumination sensor detection tunnel hole both inside and outside environment brightness, used PLC for control unit, design has a "has headlight bright And no headlight Dim "lighting at the same time according to the tunnel entrance of environment Adaptive brightness Steplessly adjust lamp brightness in the hole of the new tunnel lighting solutions, successfully applied to Huang Tatao Highway paved Street tunnel lth.Mainly work with content of this paper are:1) uses light sensor of ambient light illumination, laboratory and field experiments of the tunnel, achieved LED lamp0-5V analog voltage control signal and linear matching of lamp luminous flux. Which LED lamp single particles of light effect, lamps constant flow source of stable, and both performance of consistency is regulation lamps achieved of key;2) through video breezed device and tunnel original of other microwave or coil detection device tie using, improve has bad weather and evening Shi of detection accurate rate;3) used PLC controller as whole system of core control unit, achieved has has car to Shi according to environment brightness, and speed, and traffic volume of changes, tunnel hole within of according to degrees also can real-time followed changes of effect. Variation of illuminance in accordance with the vehicle’s safety and illumination requirement, car-free illumination inside the cave when kept at minimum illumination requirements. Compared with the original high pressure sodium lighting energy-saving50%.The design of intelligent lighting system to optimize the configuration, save the lighting costs. Through proper inspection position adjustment of the system, also applies to other lighting. With the development of wireless control LED lamps, construction costs and regulation will further improve and therefore has a broad prospect.