Component Description For Multifunction Camera - GF54.21-P-3300RF
Model 205
up to model year 2019
with code 22P (Lane tracking package)
Model 205
up to model year 2019
with code 23P (Driving Assistance package)
Model 205
up to model year 2019
with code 513 (Traffic Sign Assist)
Model 205
up to model year 2019
with code 640 (High-performance LED)
Model 205
up to model year 2019
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 205
up to model year 2019
with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 253 (except 253.99)
up to model year 2020
with code 22P (Lane tracking package)
Model 253 (except 253.99)
up to model year 2020
with code 23P (Driving Assistance package)
Model 253 (except 253.99)
up to model year 2020
with code 513 (Traffic Sign Assist)
Model 253 (except 253.99)
up to model year 2020
with code 640 (High-performance LED)
Model 253 (except 253.99)
up to model year 2020
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 253 (except 253.99)
up to model year 2020
with code 642 (Dynamic LED headlamps, right-hand traffic)
Shown on model 205.0
Shown on 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.
Stereo multifunction camera:
The stereo multifunction camera consists of two high-resolution mono cameras, that are mounted at a distance apart of approx. s_= 20_cm in a housing. While one mono 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 analysis system in the stereo multifunction camera uses the same effect that enables people to have stereoscopic vision, i.e. the parallax shift between two images. On an average distance of s = 20 to 30 m, the stereo multifunction camera can determine the distance to the object accurately to within s = 20 to 30 cm. This high resolution is also available under more difficult conditions such as when multiple objects are situated very close to each other, when objects are partially concealed or when there is a low contrast between the object and the background. 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.
This results i the following tasks for the multifunction camera:
- Reading in of signals
- Evaluation of input factors
- Controlling 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 (Flex E) (Stereo multifunction camera)
Periphery CAN (mono multifunction camera)
The mono multifunction camera reads in the following signals via periphery CAN, for example:
- Terminal status of terminal 15
- Engine running or drive train operational.
- Wheel speed
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
Suspension FlexRay (Stereo multifunction camera)
The stereo multifunction camera reads in the following signals via the chassis FlexRay, for instance:
- Terminal status of terminal 15
- Engine running or drive train operational.
- Wheel speed
- Vehicle speed
- Vehicle lateral and longitudinal acceleration
- Vehicle speed
- Vehicle lateral and longitudinal acceleration
- Information indicative of driver activity, such as turn signaling, accelerating, braking, steering
- Information indicating possible distraction of the driver, such as operation of the audio system, different comfort functions (interior illumination, steering column adjustment) and different menu levels in the instrument cluster (A1)
- Accelerator pedal position
- Information on brake control system activities
- Information indicative of driver activity, such as turn signaling, accelerating, braking, steering
- Information indicating possible distraction of the driver, such as operation of the audio system, different comfort functions (interior illumination, steering column adjustment) and different menu levels in the instrument cluster
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
Evaluation of input factors
The input factors are evaluated by the microprocessor and the corresponding components are actuated.
Controlling functions
The mono multifunction camera controls the following functions:
- Lane Keeping Assist (with CODE 476 (Lane Keeping Assist))
- Traffic Sign Assist (with CODE 513 (Traffic Sign Assist))
- High Beam Assist (with CODE 640 (High Performance LED) or CODE 641 (Dynamic left-hand traffic LED headlamps) or CODE 642 (Dynamic right-hand traffic LED headlamps))
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) or CODE 641 (Dynamic left-hand traffic LED headlamps) or CODE 642 (Dynamic right-hand traffic LED headlamps))
- Active driver assistance systems:
- Active Lane Keeping Assist (with CODE 238 (Active Lane Keeping Assist))
- DISTRONIC PLUS with Steer Assist and Stop & Go Pilot (with CODE 266 (DISTRONIC PLUS with Steer Assist and Stop & Go Pilot))
- Pedestrian detection with Brake Assist PLUS, cross-traffic (with code 268 (Brake Assist PLUS) and code 269 (Brake Assist PLUS, cross-traffic (BAS+Q)))
- Pedestrian protection (with CODE 271 (Autonomous brake intervention/pedestrian protection))
Model 205
up to model year 2019
with code 640 (High-performance LED)
Model 205
up to model year 2019
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 205
up to model year 2019
with code 642 (Dynamic LED headlamps, right-hand traffic)
Model 253 (except 253.99)
up to model year 2020
with code 640 (High-performance LED)
Model 253 (except 253.99)
up to model year 2020
with code 641 (Dynamic LED headlamps, left-hand traffic)
Model 253 (except 253.99)
up to model year 2020
with code 642 (Dynamic LED headlamps, right-hand traffic)
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
- Actuate steering wheel vibration motor (M99) (with CODE 476 (Lane Keeping Assist))
- Actuate High Beam Assist and execute optical headlamp range adjustment (with code 640 (High Performance LED), or 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))
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
Suspension FlexRay (Stereo multifunction camera)
The stereo multifunction camera also sends the following signals and requests:
- Ambient brightness
- Actuate steering wheel vibration motor (with CODE 238 (Active Lane Keeping Assist))
- Actuate High Beam Assist and execute optical headlamp range adjustment (with code 640 (High Performance LED), or 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))
- Track data (with code 238 (Active Lane Keeping Assist))
- Object data (object size, object type, object's direction of motion, distance) (with code 23P (Driving Assistance Package))
The functions that use these signals are described in the individual function descriptions (see the appropriate block diagram or function schematic).
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 | Except code 23P (Driving assistance package), A40/11 | PE54.21-P-2129-97FBA | |
| Wiring diagram for multifunction camera | With code 23P (Driving assistance package), A40/13 | PE54.21-P-2129-97FBB |