Adaptive front lamp set control system based on network technique and controlling method thereof

Abstract

The invention discloses an adaptive frontlighting system (AFS) based on internet technology. The system comprises an AFS controller, a vehicle body sensor and an actuating mechanism. The AFS controller consists of an MCU module which is connected to a power management module and a CAN transceiver module through an SPI bus line, and a signal regulating circuit which is connected to the MCU module through voltage quantity and PWM waveform. The signal regulating circuit comprises a steering wheel angle, a speed and suspension height signal input regulating circuit, and a stepper motor control module which is connected with the MCU module through an IIC bus line. The vehicle body sensor consists of a steering wheel angle sensor which is connected with a steering wheel angle signal input regulating circuit, a speed sensor which is connected with a speed signal input regulating circuit, and a front and a back suspension height sensors which are respectively connected with a suspension height signal input regulating circuit.. The actuating mechanism comprises a vertical regulating actuator and a horizontal turning actuator which are respectively connected with the AFS controller. The AFS controller is connected with a vehicle body network through CAN / LIN. Meanwhile, the invention further discloses a control method using the AFS control system.

Description

technical field [0001] The invention relates to a control system for self-adaptively adjusting the irradiation range of automobile headlights, in particular to an adaptive adjustment system for headlights when driving on a curve at night. Background technique [0002] Automotive lighting plays an important role in traffic safety. The purpose of effective road lighting under various conditions is not only to enhance human vision, but the most important and must be considered are brightness, color and three-dimensionality, as well as shape and movement, as well as brightness and color contrast. High-performance headlamps, along with other front and rear lights, are the fundamental goal of "seeing and being seen" automotive lighting. [0003] The development of automobile headlight system has gone through multiple stages: from the initial kerosene lamp to incandescent lamp; then to parabolic halogen tungsten headlight, free-form halogen tungsten headlight and projection system...

AI Technical Summary

Problems solved by technology

The disadvantages of this technical solution are: (1) separate the central control unit from the drive execution unit, and use the LIN bus connection in the middle, which increases the complexity of the system, and the reliability of the system also decreases; (2) due to the central The split topology of the control unit and the drive execution unit, in addition to the transceiver of the LIN bus, the drive execution unit must also have an MCU as the control slave node of the LIN bus, which increases the cost of the system; (3) the lighting components are An important part of the safe driving of the car, and it is also a vulnerable part

This prior art adopts a design that integrates the LIN transceiver and the drive unit. Once the drive unit is damaged, the entire LIN receiver must be replaced, thereby increasing the maintenance cost

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