Overtaking control system and control method on basis of high beam and low beam integrated xenon headlamp

Abstract

The invention discloses an overtaking control system and an overtaking control method on the basis of a high beam and low beam integrated xenon headlamp. The control system comprises a combination switch, a ballast, a relay, a vehicle body controller, an electromagnetic valve and a light barrier driven by a motor, wherein one end of the combination switch is grounded and the other end of the combination switch is connected with the input end of the vehicle body controller; a first output port OUT1 of the vehicle body controller is connected with one end of a relay coil J1; a second output port OUT2 of the vehicle body controller is connected with one end of an electromagnetic valve coil J2; the other end of the relay coil J1 and the other end of the electromagnetic valve coil J2 are connected with a +12V power supply; a ballast loop is formed by a relay switch K1, the ballast and the supply power; and an electromagnetic valve loop is formed by an electromagnetic valve switch K2 and the motor. In the control method, the overtaking is controlled by adopting the vehicle body controller; if a vehicle is overtaken when a low beam lamp is not turned on, the charging time of the ballast can be ensured; and if the vehicle is overtaken when the low beam lamp is turned on, the charge-discharge of the ballast can be avoided, so that the service life of the ballast is prolonged.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to an overtaking control system and control method based on xenon headlights integrating far and near beams. Background technique [0002] With the rapid development of modern automobile technology, more and more cars choose xenon headlights as headlights. Due to the advantages of xenon headlights in light intensity and other aspects, the use of xenon lamps has become a development trend. Xenon headlights can The headlights designed to integrate far and near beams can not only save the layout space of the headlights, but also stipulate the mandatory arrangement of running lights in the latest European and American regulations and standards, so that the xenon headlights with integrated far and near beams will inevitably become the next few years. A mainstream design. However, the lighting of xenon headlights requires a high voltage of more than ten thousand volts, and...

AI Technical Summary

Problems solved by technology

[0003] For the xenon headlights with integrated far and near beams, when driving at night and overtaking, the headlights need to flash strobe, the existing overtaking control methods (such as image 3 As shown) the combination switch SW directly controls the relay L1, thereby directly controlling the on-off of the ballast H1 to achieve the purpose of flickering the headlights. However, according to the starting current curve of the ballast (that is, a damped oscillation mode, in The current reaches the maximum value within 250ms, and then decreases to a constant current). If the on-off time of the ballast is not controlled, the ballast will discharge without being fully charged, resulting in the internal circuit capacitance of the ballast Abnormal charge and discharge, greatly shorten the service life of the ballast

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