ADAPTIVE HIGH BEAM SYSTEM SYSTEM DESCRIPTION


  1. ADAPTIVE HIGH BEAM SYSTEM


    1. The adaptive high beam system is a high beam automatic control system which detects the light sources of preceding vehicles and the brightness of the surrounding environment with a camera installed behind the windshield. The system also automatically switches the headlights for optimal light distribution to improve visibility while reducing glare that strikes preceding vehicles. In addition, the system can vary the amount of current supplied to the LED array installed inside the headlight unit to freely control the brightness, illumination range and shading.

    2. Function of Main Components

      Component Outline
      Forward Recognition Camera The system recognizes preceding vehicles, oncoming vehicles and streetlights from image information captured by the camera and sends position information about the preceding and oncoming vehicles to the headlight ECU sub-assembly LH.
      Yaw Rate Sensor Sends yaw rate signals to the forward recognition camera.
      Combination Meter Assembly

      • Receives switch information about the integration control and panel assembly (adaptive high beam switch) from the headlight ECU sub-assembly LH.

      • Displays the "To Activate AHS, Switch Headlight to High Beam" message on the multi-information display in the combination meter assembly according to signals from the headlight ECU sub-assembly LH.

      • Receives adaptive high beam indicator illumination request signals from the headlight ECU sub-assembly LH and illuminates the adaptive high beam indicator.

      • When a malfunction occurs in the adaptive high beam system, a warning message is displayed on the multi-information display in the combination meter assembly according to signals from the headlight ECU sub-assembly LH.

      Tech Tips


      • When an adaptive high beam system malfunction is detected, the adaptive high beam indicator light turns off and "Headlight System Malfunction Visit Your Dealer" is displayed on the multi-information display.

      • The adaptive high beam indicator light illuminates to inform the driver when the adaptive high beam system is active.
      Headlight ECU Sub-assembly LH

      • Receives signals from the integration control and panel assembly (adaptive high beam switch) and various ECUs and controls the adaptive high beam system according to vehicle conditions and the surrounding conditions.

      • When a malfunction occurs in the adaptive high beam system, a warning display command signal is sent to the combination meter assembly and a DTC is simultaneously output.

      • Supplies power to the headlight light control ECU sub-assembly.

      • Sends the current switching time to the headlight light control ECU sub-assembly based on the vehicle forward information from the forward recognition camera.
      Headlight ECU Sub-assembly RH Receives signals from the headlight ECU sub-assembly LH and performs adaptive high beam system control for the headlight RH.
      Headlight Light Control ECU Sub-assembly Receives power supply and high beam illumination command signals from the headlight ECU sub-assembly LH and performs adaptive high beam control.
      Main Body ECU (Multiplex Network Body ECU)

      • Sends light control switch position information to the headlight ECU sub-assembly LH.

      • Sends high beam illumination command signals to the headlight ECU sub-assembly LH.
      Integration Control and Panel Assembly (Adaptive High Beam Switch) Sends the combination switch assembly (adaptive high beam switch) on/off signals to the headlight ECU sub-assembly LH.
      Skid Control ECU Assembly Transmits a speed sensor signal to the headlight ECU sub-assembly LH.
      Steering Angle Sensor Transmits a speed sensor signal to the headlight ECU sub-assembly LH.
      Power Management Control ECU Transmits READY condition signal and vehicle information signals to the headlight ECU sub-assembly LH.
      Rear Height Control Sensor Sub-assembly LH Transmits a vehicle height signal to the headlight ECU sub-assembly LH.

    3. Initial Set Control

      When the READY condition signal is received, the headlight ECU sub-assembly LH drives the headlight leveling motor and moves the headlight reflector to the lower limit position and returns it to the proper position. Also, for vehicles equipped with an adaptive high beam system, the high beams are continuously illuminated from the inside of the triple beam headlight.