Bus-based high-integration automobile LED headlight controller

Abstract

The invention relates to a bus-based high-integration automobile LED headlight controller, which comprises an MCU, a far and near light driving circuit, a steering lamp LED driving circuit, a fog lampLED driving circuit, a daytime running light / position lamp LED driving circuit, a temperature sampling circuit, a headlight height adjusting dimming motor control circuit and a transceiver, wherein the MCU is communicated with a superior system through the transceiver; and the far and near light driving circuit, the steering lamp LED driving circuit, the fog lamp LED driving circuit, the daytimerunning light / position lamp LED driving circuit, the temperature sampling circuit and the headlight height adjusting dimming motor control circuit are respectively connected with the MCU. The bus-based high-integration automobile LED headlight controller has the advantages that each path of driving circuit, the headlight height adjusting dimming motor control circuit and the far and near light switching electromagnetic valve are controlled by the MCU, so that the number of wiring harnesses of the whole automobile is reduced, the weight of the whole automobile is reduced, electronic control isrealized, and the reliability is better; and MCU obtains the diagnostic information of the electromagnetic valve and LED through a feedback interface, which is convenient to protect parts in the controller, and reduces the possibility that the burnout of the wiring harnesses.

Description

technical field [0001] The invention relates to a headlight controller, in particular to a bus-based highly integrated automotive LED headlight controller. Background technique [0002] In the context of the upgrading of the entire automobile industry, electrification is an inevitable trend, and electrification puts forward higher requirements for the lightweight of vehicle wiring harnesses, long life of lamps and energy efficiency ratio. LED's high energy efficiency, long life, and with the increase in usage, the sharp drop in cost also provides feasibility for centralized control (heat dissipation, connector overcurrent capability, etc.). [0003] Traditional LED headlight controllers adopt the concept of halogen lamps, mostly single LED drive circuits, and each street light (high beam, low beam, turn signal, daytime running lights, fog lights, position lights, etc.) requires a different power supply In addition to the wiring harness control, the headlight height adjustme...

AI Technical Summary

Problems solved by technology

This makes the whole vehicle have many wiring harnesses, complex layout, heavy weight, high cost, and there are also problems such as insufficient fault diagnosis ability, overheating of lamps and insufficient short circuit protection ability

[0004] In addition, the traditional headlight height adjustment dimming motor controller adopts a knob mechanical structure, which is relatively complicated, and it is easy to cause problems such as over-position failure and poor contact during use.

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