Tunnel LED lighting dimming device and dimming method

Abstract

The invention relates to a tunnel LED lighting dimming device which comprises a master controller, n LED tunnel lamps and a serial bus. The master controller and the LED tunnel lamps form a closed-loop communication return circuit through the serial bus, wherein n is a natural number lager than 1. The invention further relates to a dimming method of the tunnel LED lighting dimming device. According to the method, the master controller sends an LED tunnel lamp address code generation command through an output interface of the serial bus, and all the LED tunnel lamps save address codes generated by the LED tunnel lamps respectively; the master controller can send a dimming command of any of the LED tunnel lamps through the output interface of the serial bus; the LED tunnel lamps can send out an alarm command through the output interface of the serial bus. According to the tunnel LED lighting dimming device and dimming method, by forming the closed-loop communication return circuit through the design of double communication ports of the master controller and the LED tunnel lamps, a dynamic address coding method of the LED tunnel lamps is achieved, great convenience is brought to dimming, reliability is greatly improved, and communication distances are not limited any more.

Description

technical field [0001] The invention relates to a dimming device and a dimming method for tunnel LED lighting, which are suitable for the field of tunnel lighting using LEDs as light sources. Background technique [0002] Good tunnel lighting is a necessary condition to ensure traffic safety. Tunnel lighting is not only related to the allowed driving speed, traffic flow and other indicators of the tunnel, but also closely related to the natural geographical conditions such as the position of the tunnel and the brightness outside the tunnel. This requires that the tunnel lighting should be able to provide suitable lighting brightness. That is, the lighting facilities must have dimming function. Currently widely used tunnel lighting fixtures such as HID lamps and fluorescent lamps are not suitable for long-term dimming control due to technical reasons. With the development of LED packaging and application technology, LED has greatly improved in terms of lumen efficiency, col...

AI Technical Summary

Problems solved by technology

These methods are more suitable for uniform dimming of all LED lights in the tunnel with the same law, which meets certain market demands, but it is difficult to achieve independent dimming control of any LED lights

Even though some methods can achieve independent addressing and dimming control of a single lamp in principle, it is very inconvenient to operate during actual installation and use, and it is not easy to promote and use

Images