Surround Vision Camera Description and Operation
- View Displayed by the Surround Vision Camera
- Area Not Shown
- View Displayed by the Surround Vision Camera
- Area Not Shown
The surround vision camera system consists of the following components:
- B87 Rearview Camera
- B174G Frontview Camera - Grille
- K157 Video Processing Control Module
- A11 Radio OR K74 Human Machine Interface Module
- B225L Sideview Camera - Left
- B225R Sideview Camera - Right
- X20 Memory Card Receptacle
When the vehicle is traveling at speeds slower than 6 mph (10 kph) the video processing control module will power up the cameras and send a video signal to the radio or human machine interface module.
The following conditions may cause a degraded surround vision camera image:
- Ice, snow or mud has built up on the rear vision camera
- Dark conditions
- Extreme light conditions, such as glare from the sun or the headlights of another vehicle
- Damage to the rear of the vehicle
- Extreme high temperatures or extreme temperature changes
Surround Vision displays an overhead view of the area surrounding the vehicle, along with the front or rear camera views in the center stack. The front camera is in the grille or near the front emblem, the side cameras are on the bottom of the outside rearview mirrors and the rear vision camera is above the license plate.
Features of the Surround Vision System
- Rear camera (B87 Rearview Camera) view alongside overhead view is displayed in reverse
- Front camera (B174G Frontview Camera - Grille) view alongside overhead view is displayed after shifting out of reverse to Neutral or Drive
- Will display front view when front park assist object is within trigger range calibration value (30 cm (12 in) in a forward gear
- Image is removed from display when vehicle speed exceeds speed calibration (10 kph/6 mph) or button press / screen touch
System Operation
The video processing control module sends voltage and a constant ground to power the cameras. Video signal + and video signal - circuits carry the video image from the cameras to the video processing control module for processing. The video processing control module will then send the processed image output to infotainment system by Video signal + and video signal - circuits. Additionally, all the video signal circuits are twisted and shielded to prevent any interference which may lead to a loss of video signal resolution and cause a degraded video image. These circuits must not be spliced/removed from shielding or will cause image degradation.
The video processing control module receives CAN information from Rear Park Assist object detection module and Steering Wheel angle from body control module during Reverse. A warning triangle may display during the 360 surround view screen if Rear Parking Assist has detected an object during a reverse. This triangle changes from amber to red and increases in size the closer the object. Also a dynamic guideline is displayed in Reverse to show the projected path of the vehicle.
SD Card and Video Recorder Function
In Full Speed mode (12 Mbps) and High Speed (480 Mpbs), the frame rate is decided by writing speed (USB cable, SD card, software) to SD card reader. The video processing control module supports only mass storage class (8 to 32 GB SDHC card with FAT32 file system, Class 4 and Over). The 5V output of video processing control module is used to switch on/off read/write device.
The recorder feature continuously records single camera views from the 360 cameras. There are two operating modes for image recording: security mode and normal mode. Security mode records images in a round robin sequence using all cameras when the module wakes up until the ignition is in accessory or run mode. Normal mode records images from front and rear cameras in ACC or RUN power mode.
The video processing control module shall stop recording and close this file when Ignition OFF or trunk is opened and start a new recording onto a new file. This is to avoid corrupting the entire drive cycle file when SD card is removed abruptly. Disable recording before removing SD card .
Video playback allowed in PARK gear only. During playback, Recording is not possible. Playback screen must be closed to allow recording.