Adaptive Front Lighting System

Description

Adaptive Front-lighting System (AFLS)
AFLS(Adaptive Front-lighting System is a headlamp orientation control system that takes into account both steering angle and vehicle speed to orient the headlamps to an angle that provides better nighttime visibility.
Variable conditions make beam pattern of running vehicle kaleidoscope.

Component of AFLS
1. Input part : It is provided that information of speed sensor, height sensor and so on related to condition of vehicle.
2. Control part (AFLS Unit) : It controls Output part by analyzing/judging Input signal.
3. Output part : It drive Low beam of H/Lamp to upper/lower and left/right side optimum beam pattern according to output control signal of AFLS Unit.

Main function of AFLS






Advantage of AFLS






Operation

Component

AFLS Unit (A)




1. General
System initialization, In case of input Engine signal (AFLS ECU, Levelling /Swivelling motor)
Adaptation of AFLS OFF switch
AFLS operate normally ,only under turning low beam switch on.
Providing Tell-tale function of AFLS(display 'AFLS OFF' on dashboard)
In case of system failure, display blinking 'AFLS OFF' on dashboard.
2. Main function
Swivelling function
Levelling function
Processing signal of Height sensor(Air suspension)

Swivelling Actuator (A)




1. General
communicate AFLS Unit through LIN protocol
Robust control to Disturbance
Doesn't work out of rated voltage range.
2. Main function & Rating
Drive Low beam to left / right side
Fail-safe function : In case of detecting malfunction or system failure , drive to secure position
gear ratio (150 : 1)
Operating voltage : 10V ~ 16V
Operating current : 100mA

Levelling Actuator (A)




1. Main spec
communicate AFLS Unit through LIN protocol
Robust control to Disturbance
Doesn't work out of rated voltage range.
2. Main function & Rating
Drive Low beam to upper / lower
Fail-safe function : In case of detecting malfunction or system failure , drive to secure position
Drive type : Micro step mode (1/16)
Operating voltage : 10V ~ 16V
Operating current : 100mA

Height Sensor




1. General
Height Sensor connecting body & suspension measures inclination information from load condition.
Vehicle having the Air-suspension system transmits inclination signal to AFLS ECU by using CAN protocol.
Vehicle having the Steel-suspension system transmits inclination signal to AFLS ECU by using Hard-wire.
2. Rating
Rated Voltage : 5V ± 5%