LED vehicle lamp controller

Abstract

The invention relates to the technical field of vehicle lamp control, in particular to an LED vehicle lamp controller. The controller comprises an LED driving unit, a control unit, an LED control circuit, a temperature feedback unit and an LED module. The LED driving unit is connected with the control unit through an SPI bus. The LED driving unit is used for driving the LED module. The temperaturefeedback unit feeds back the detected temperature of the LED module to the LED driving unit. The control unit controls the LED module through the LED control circuit. According to the invention, control is flexible; quite obvious reminding effects are achieved; safety of driving is improved; the controller is simple in structure and low in cost; vehicle lamps are prevented from being too hot through the temperature feedback unit; and service lifetime of the vehicle lamp is effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of vehicle lamp control, in particular to an LED vehicle lamp controller. Background technique [0002] With the continuous advancement of LED light source technology, there are more and more cases of using LED as a car light source in automobiles. There are corresponding products from low-power turn signals and lighting lamps to high-power fog lamps and headlamps. Moreover, with the increasing development of the automobile industry, the significance of the existence of the lights is not only the lighting, but more and more people's requirements for the lights are the diversification and dynamism of the lights. [0003] At present, traditional car lights are more of a string of lights, which cannot be controlled individually, and the lighting time and brightness cannot be controlled. A single light is easy to cause visual fatigue to passersby, and there is not much indication and reminder for avoiding accid...

AI Technical Summary

Problems solved by technology

However, this scheme has obvious shortcomings

The disadvantage of this scheme is that its circuit is a parallel circuit, and the total current of the parallel circuit will be larger

Moreover, in the parallel circuit, the LED current of each channel is limited, thereby limiting the lumen value of the LED; the disadvantage of this solution is that when the vehicle voltage fluctuates between 9V-16V, the current value of the resistive circuit will be relatively large Fluctuation; the disadvantage of this solution is that the resistive circuit will have a large temperature drift, and the circuit has no thermistor feedback circuit

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