Rear Multifunction Camera, Basic Function - GF54.71-P-9894A

Model All (CAR) 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

• Lane recognition 
• Object recognition 
• Signal lamp recognition 
• Rain/blocking recognition 
• Heating element 

General 

The rear multifunction camera captures the area behind the vehicle and is necessary for conditionally automated driving. The task is to recognize emergency vehicles (police, rescue and fire-fighting vehicles).

The integrated object recognition can distinguish between hikes and multi-track vehicles. Blue, red and orange signal lamps are detected. The detection range is up to 130 m behind the vehicle. The detection angle is approx. 29° vertically and approx. 53° horizontally. The resolution is 1280x960 (1.2MP). A heated lens hood cover simultaneously serves as a holder for the camera.

Function requirements 

• Trunk lid closed

Function 

The rear multifunction camera captures the area behind the vehicle. The following functions are implemented in the evaluation and control electronics of the rear multifunction camera:

• Lane recognition 

  The lane markings are recognized on both sides of the vehicle's own lane and on the adjacent lane.

• Object recognition 

  Moving objects are detected and classified (bikes, vehicles, trucks).

• Signal lamp recognition 

  Blue, red or orange-colored LED lamps as well as blue bulbs are detected.

• Rain/blocking recognition

  This function detects whether the field of view is limited (e.g. due to severe dazzling caused when the sun is low, rain, snow or condensation) is limited.

Heating element 

In the event of restricted visibility (e.g. due to moisture, wet, rain, ice or snow), the heating element of the lens hood cover is activated. The heating element is directly actuated by the rear multifunction camera. The rear multifunction camera is connected to the network architecture of the vehicle via CAN 1 for redundancy. The ESP® control unit is the gateway for the necessary input information. The position determination control unit acts as a gateway for transfer to the driver assistance systems control unit via Ethernet.

The following information is primarily sent to the driver assistance systems control unit:

• Lane data (width, curvature, distance, type)
• Object data (object size, object type, object's direction of motion, distance, quantity)
• Signal lamp information (color, quantity, object assignment)
• System status (incl. diagnostic information)

The rear multifunction camera receives mainly the following information:

• Vehicle dynamics data (wheel speed, direction of travel, speed, steering angle)
• Status of HAD driving mode
• Status of rear window heater, outside temperature, air-recirculation mode, trunk lid rotary tumbler

	Component descriptions
	Conditionally automated driving camera, component description	Model 297	GF54.71-P-0011D
	Multifunction camera heating element, component description	Model 223	GF54.71-P-0014A
		Model 206	GF54.71-P-0014C
		Model 297	GF54.71-P-0014D