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

Model all (CAR) 

with code 200 (Conditionally automated driving) 

Overview 

This document contains information on:

• General information 
• Function requirements 
• Function 
  • Lane recognition 
  • Object recognition 
  • Signal light detection 
  • Rain/blockage detection 
  • Heating element 

General information 

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

The integrated object recognition can distinguish between bikes 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° and horizontal approx. 53°. The resolution is 1280x960 (1.2MP). A heated lens hood also acts as a holder for the camera.

Function requirements 

• Trunk lid closed

Function 

The rear multifunction camera records the area behind the vehicle.

The following functions are performed in the electronic analysis and control electronics of the rear multifunction camera:

Lane recognition 

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

Object recognition 

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

Signal light detection 

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

Rain/blockage detection 

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

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.

For redundancy reasons, the rear multifunction camera is connected to the network architecture of the vehicle over CAN 1. The ESP® control unit is the gateway for the required input information. The position determination control unit acts as a gateway for transmission to the driver assistance systems control unit over Ethernet.

Basically, the following information is sent to the driver assistance systems control unit:

• Lane data (width, curvature, distance, model)
• Object data (object size, object type, object's direction of motion, distance, quantity)
• Signal lamp information (color, number, object assignment)
• System status (including diagnosis information)

Basically, the rear multifunction camera receives the following information:

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

	Component part descriptions
	Conditionally automated driving camera, component description	Model 223 with code 200 (Conditionally automated driving)	GF54.71-P-0011A
		Model 297 with code 200 (Conditionally automated driving)	GF54.71-P-0011D
	Multifunction camera heating element, component description	Model 223	GF54.71-P-0014A
		Model 297	GF54.71-P-0014D