Component Description For Multifunction Camera - GF54.21-P-3300RFM
Model 205
as of model year 2019
with code 22P (Lane tracking package)
Model 205
as of model year 2019
with code 23P (Driving Assistance package)
Model 205
as of model year 2019
with code 513 (Traffic Sign Assist)
Model 205
as of model year 2019
with code 640 (High-performance LED)
Model 205
as of model year 2019
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 205
as of model year 2019
with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 253 (except 253.99)
as of model year 2020
with code 22P (Lane tracking package)
Model 253 (except 253.99)
as of model year 2020
with code 23P (Driving Assistance package)
Model 253 (except 253.99)
as of model year 2020
with code 513 (Traffic Sign Assist)
Model 253 (except 253.99)
as of model year 2020
with code 640 (High-performance LED)
Model 253 (except 253.99)
as of model year 2020
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 253 (except 253.99)
as of model year 2020
with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 253.99
with code 22P (Lane tracking package)
Model 253.99
with code 513 (Traffic Sign Assist)
Shown: Model 205.0
Shown: Model 205.0
Location
The mono multifunction camera or stereo multifunction camera is positioned under a panel at the top center of the windshield.
Tasks
Mono multifunction camera:
The mono multifunction camera records information on the surroundings in the area to the front of the vehicle, e.g. ambient brightness, objects or traffic signs. These are evaluated by the integrated control unit, and used for implementing various functions.
The electronic analysis system of the stereo multifunction camera is also able to differentiate between shadow and road markings and real objects. Along with the spatial position of a detected object, the stereo multifunction camera also provides decisive additional information: For each pixel of a detected object, a direction of motion can be determined on the horizontal, vertical and longitudinal axes (longitudinal axis of an object). This then clearly shows whether an object is moving and if so, where to. In combination with object classification (e.g. pedestrian) based on common features, it is possible to achieve a high degree of decision-making reliability. For example, the exact impact location for a collision can be calculated which in turn enables the time remaining until the point of impact to be used to maximum effect for safety precautions. The stereo multifunction camera supports this process over the entire vehicle speed range.
Stereo multifunction camera:
The stereo multifunction camera consists of two high resolution camera heads that are mounted at a distance of approx. 20 cm apart in a housing. While the mono multifunction camera only estimates the distances to objects, the stereo multifunction camera can measure the distance to an object and its height above the road. This is made possible by the differences in perspective between the left and the right optical path. The electronic evaluation circuit in the stereo multifunction camera uses the same effect that enables people to have stereoscopic vision, this refers to the parallax or displacement between two images. At an average distance of 20 to 30 m, the stereo multifunction camera can determine the exact distance to the object down to 20 to 30 cm. This high resolution is also available under arduous conditions such as, for example, the following:
- Several objects are located close to each other.
- Objects are partially concealed.
- The contrast between object and background is weak.
This results i the following tasks for the multifunction camera:
- Reading in of signals
- Evaluation of input factors
- Control and support of functions
- Actuation of components
- Transmission of signals and requests
Reading in of signals
The input factors are read in via the following connection:
- Periphery CAN (CAN PER) (mono multifunction camera)
- Suspension FlexRay (Stereo multifunction camera)
Periphery CAN (mono multifunction camera)
The mono multifunction camera also reads in the following signals over the periphery CAN:
- Terminal status of terminal 15
- Engine running or drive train operational.
- Wheel speed
- Vehicle speed
- Vehicle lateral and longitudinal acceleration
- Information indicating driver activity, such as, e.g. turn signaling, accelerating, braking, steering
- Information indicating possible distraction of the driver, such as e.g. operation of the audio system, various comfort functions (interior illumination, steering column adjustment) as well as various menu levels in the instrument cluster (A1) and in the head unit (A26/17)
Suspension FlexRay (Stereo multifunction camera)
The stereo multifunction camera also reads in the following signals over the suspension FlexRay:
- Terminal status of terminal 15
- Engine running or drive train operational.
- Wheel speed
- Vehicle speed
- Vehicle lateral and longitudinal acceleration
- Information on brake control system activities
- Information indicating driver activity, such as, e.g. turn signaling, accelerating, braking, steering
- Information indicating possible distraction of the driver, such as, e.g. operation of the audio system, various comfort functions (interior illumination, steering column adjustment) as well as various menu levels in the instrument cluster and in the head unit
Evaluation of input factors
The input factors are evaluated by the microprocessor and the corresponding components are actuated.
Control and support of functions
The mono multifunction camera controls the following functions:
- Lane Keeping Assist (with CODE 22P (Lane package))
- Traffic Sign Assist (with CODE 513 (Traffic Sign Assist))
- High Beam Assist (with code 640 (High Performance LED), code 641 (LHD dynamic LED headlamp) or code 642 (RHD dynamic LED headlamp))
The stereo multifunction camera controls the following functions:
- Traffic Sign Assist (with CODE 513 (Traffic Sign Assist))
- High Beam Assist (with code 640 (High Performance LED), code 641 (LHD dynamic LED headlamp) or code 642 (RHD dynamic LED headlamp))
The stereo multifunction camera supports the following driver assistance systems (with code 23P (Driving Assistance Package)):
- Active Lane Keeping Assist
- DISTRONIC Distance-Pilot
- Steering-Pilot
- Evasive Steering Assist
- Active Brake Assist with intersection function
The respective multifunction camera evaluates light sources in front of the vehicle. In the stereo multifunction camera, evaluation takes place via the right camera head.
Actuation of components
To avoid any fogging in the multifunction camera's field of view the front window is heated in this area by the auxiliary heater heating element (R50). The auxiliary heater heating element is directly actuated by the multifunction camera.
Transmission of signals and requests
The multifunction camera sends status information and requirements over the following connection:
- Periphery CAN (mono multifunction camera)
- Suspension FlexRay (Stereo multifunction camera)
Periphery CAN (mono multifunction camera)
The mono multifunction camera also sends the following signals and requests:
- Ambient brightness
- Trigger vibrations at steering wheel (with code 22P (Lane Tracking Package))
- Actuate High Beam Assist and perform optical headlamp range adjustment (with code 640 (High Performance LED), code 641 (Left-hand drive dynamic LED headlamp) or code 642 (Right-hand drive dynamic LED headlamp))
- Display traffic sign (with CODE 513 (Traffic Sign Assist))
Suspension FlexRay (Stereo multifunction camera)
The stereo multifunction camera also sends the following signals and requests:
- Ambient brightness
- Trigger vibrations at steering wheel (with code 238 (Active Lane Keeping Assist))
- Actuate High Beam Assist and perform optical headlamp range adjustment (with code 640 (High Performance LED), code 641 (Left-hand drive dynamic LED headlamp) or code 642 (Right-hand drive dynamic LED headlamp))
- Display traffic sign (with CODE 513 (Traffic Sign Assist))
- Lane data
- Object data (object size, object type, object direction of motion, distance)
Structure
The multifunction camera consists of the following main components:
- Camera head (mono multifunction camera)
- Left and right camera head (stereo multifunction camera)
- Electronic analysis system (control unit)
- Auxiliary heater heating element
After replacement of a multifunction camera or the windshield the corresponding multifunction camera has to be recalibrated.
Variants
- Mono multifunction camera with horizontal detection angle of 34° (except code 513 (Traffic Sign Assist))
- Mono multifunction camera with horizontal detection angle of 46° (with code 513 (Traffic Sign Assist))
| Wiring diagram for multifunction camera | Model 205 as of model year 2019, A40/13 | PE54.21-P-2129-97FBD | |
| Model 205 as of model year 2019, A40/11 | PE54.21-P-2129-97FBC | ||
| Model 253.99, A40/11 | PE54.21-P-2129-97FCA |