Description and Operation

Description

Adaptive Front Lighting System (AFLS): AFLS is a headlamp direction control system that considers the steering wheel angle and vehicle speed to direct the headlamps at an angle that provides the best visibility at night. Changing conditions make the lighting pattern of a moving vehicle a kaleidoscope. AFLS components

1. 1
   Input Part: Provides information from the speed sensor, height sensor, etc., related to the vehicle condition.
2. 2
   Control Part (AFLS Unit): Controls the output part by analyzing/evaluating the input signal.
3. 3
   Output part: it controls the upper/lower low beam H/Lamp and the optimal left/right lighting pattern according to the output control signal of the AFLS module.

Main Function of AFLS

	Contents	Description
1	Dynamic Bending Light (Swivel)	Providing the optimal beam pattern on curved roads 1 Improved visibility on curved roads 2 Low Beam Left/Right Actuation
2	Automatic Leveling (Leveling)	Low beam compensation according to vehicle inclination 1 Compensation according to static condition (load) 2 Compensation according to dynamic conditions (rapid acceleration, sudden braking)
3	Fail-safe	Fail-safe Response upon Detection of System Failure and Malfunction 1 Signal/Communication Error Detection for Swivel 2 Signal/communication error detection for leveling 3 System Failure Detection

Advantages of AFLS

	Contents	Description
1	Improved Stability	Guaranteed Visibility on Curved Roads Depending on vehicle speed/steering angle, the swivel actuator is automatically controlled to provide the optimal lighting pattern. Fail-safe response for the driver on the opposite side of the road → In case of a communication error, the swivel actuator automatically returns to its initial position.
2	Enhanced convenience	AFLS Operation Selectable by Driver (AFLS Off Switch) Provides a diagnostic function to detect system malfunctions and check data (using diagnostic equipment) Reduced wiring harness through the use of CAN / LIN communication in the vehicle.

Block Diagram

Operation

AFLS Unit (A) Component

1. 1
   General system initialization; in case of input signal from the engine (AFLS ECU, leveling/swivel motor), AFLS OFF switch adaptation. AFLS operates normally only when the automatic headlamps are on. Provides the AFLS tell-tale function ("AFLS" indication on the instrument cluster). In case of system failure, the "AFLS" indicator illuminates on the instrument cluster.

   

2. 2
   Main function: Swivel function, leveling function, height sensor signal processing, dynamic cornering light control

   

3. 3
   General: Communicates with the AFLS unit via LIN protocol. Reliable interference control. Does not operate outside the rated voltage range.
4. 4
   Main Function and Rating: Low Beam Left/Right Actuation. Fail-safe function: if a malfunction or system failure is detected, move to a safe position.

   

5. 5
   Main specification: communicates with the AFLS module via LIN protocol; reliable interference control; does not operate outside the rated voltage range.
6. 6
   Main function and rating: upper/lower low beam actuator; fail-safe function: in case of malfunction or system failure, moves to a safe position.

   

7. 7
   General: The height sensor connecting the body and suspension measures inclination information depending on the load. A vehicle with steel suspension transmits the inclination signal to the AFLS ECU via a wired connection.
8. 8
   Rating: Rated voltage: 5 V ± 5%

Swivel motor (A), leveling motor (B), height sensor