Mixed light color temperature adjustable circuit control system and method

Abstract

The invention provides a mixed light color temperature adjustable circuit control system and method; the system comprises a power supply unit, a reflection mechanism, and a voltage adjusting unit, a control unit, a drive source unit and a lamp bead unit connected in sequence via a circuit; the power supply unit supplies power; the voltage adjusting unit can adjust and output a color temperature adjusting voltage; the control unit receives the color temperature adjusting voltage and outputs a pulse width modulation signal value; the drive source unit can receive the pulse width modulation signal and output an electric signal; the lamp bead unit can form two lights of different color temperatures; the reflection mechanism can mix the two lights, and emit the mixed lights. The method employsthe system to adjust the color temperature, is suitable for a complex illumination environment, thus improving the illumination driving security of vehicles.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a control method and control system for an automobile lamp with multi-color temperature light-emitting diodes and adjustable light mixing. Background technique [0002] In recent years, with the rapid development of my country's economy, the income level of the people has been continuously improved, and the price of automobiles has been continuously reduced. Since 2013, the number of cars in cities in my country has been increasing year by year, and safety accidents caused by bad weather and low visibility are on the rise, especially in environments with low visibility such as fog, snow, rain or dust. The decrease of light penetration caused by the scattering effect of suspended particles on light directly leads to the decrease of illumination intensity. The headlight minority of current vehicle is the xenon lamp and the halogen bulb that basically send out yellow light that use...

AI Technical Summary

Problems solved by technology

At the same time, there must be enough light intensity to ensure safety, and light penetration and light comfort should also be taken into account. Automobile headlights with a single color temperature can no longer meet the functional requirements of automobile headlights. On the premise of ensuring light intensity, Adjustable lighting color temperature becomes very necessary

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