Self-Study Programme 375 Audi Q7 New driver assistance systems.pdf

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Service Training
Audi Q7 - New Driver Assistance Systems
Audi side assist
Optical parking system (OPS)
Reversing camera
Self-study programme 375
Driver assistance systems
The continuous improvement of vehicle safety is one of the foremost objectives in the development of new
vehicles. New driver assistance systems that have been introduced into series production for the first time on
board the Audi Q7 make a considerable contribution in this regard. On request, a number of innovative driver
assistance systems are also available in the Q7, for example the radar-based Audi side assist, the optical
parking system with audible and visual information and the reversing camera.
A frequent cause of accidents when changing lanes is that other vehicles are overlooked.
By continuously monitoring the adjacent lanes, in particular the area to the rear of the vehicle, the Audi side
assist supports the driver during overtaking and lane-change manoeuvres and thus makes a contribution to
active safety. The driver is alerted if one of the adjacent lanes is occupied by one or more road users. Despite
the system’s capability, the driver must always be aware that the system serves as an aid, but cannot take the
responsibility away from the driver for his/her own decisions. Despite the Audi side assist, it is still necessary
for the driver to turn his/her head, look in the side mirror and observe the traffic.
The electronic parking aid system has been further improved. Two new functions are now available to the
customer. The familiar acoustic parking aid system has been expanded by a graphic screen display in the
MMI. Using bar diagrams this provides the customer with a detailed depiction of the point at which a collision
may occur. The bar diagrams permit the distance from the obstacle to be estimated with precision.
The familiar acoustic feedback is retained.
Drivers who would prefer to get a picture of the situation behind the rear of the vehicle for themselves, can
have the image from a reversing camera displayed on the MMI screen. The camera which has been
integrated into the tailgate handle provides an ideal overview of the situation behind the vehicle. The camera
image appears automatically when reverse gear is engaged.
Taking the lead: With design & performance
Contents
Audi side assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Optical parking system (OPS) . . . . . . . . . . . . . . . . . . . . . . 20
Reversing camera. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
The self-study programme provides basic information on the design and function of new vehicle models,
new vehicle components or new technologies.
The self-study programme is not intended as a workshop manual.
The specified values only serve for better understanding and relate to
the software versions applicable at the time the SSP was compiled.
For maintenance and repair operations it is essential that you refer to the current technical literature.
Reference
Note
Audi side assist
Audi side assist in the Audi Q7
Introduction
The purpose of the Audi side assist is to monitor the area behind and to the side the vehicle using radar
sensors and assist the driver when changing lanes. The area monitored also includes the so-called "blind
spot" on the driver side and the front passenger side. Each vehicle side is fitted with a radar sensor for this
purpose.
If the Audi side assist detects a critical situation that could cause an accident during a lane change,
the system alerts and warns the driver. The driver is alerted through activation of the warning lamps in the
relevant exterior mirror and warned through the warning lamps flashing rapidly.
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4
Radar sensors and control units
The Audi side assist is equipped with two control
units, the side assist control unit J769 (master
control unit) and the side assist control unit 2 J770
(slave control unit). The master control unit forms a
single module with the right radar sensor, while the
slave control unit forms a single module with the
left radar sensor.
The master and slave control units are identical in
design. The main component is an electronic circuit
board with a digital signal processor as the central
processing unit. Among other functions, it is used
to record and track objects detected by means of
the radar sensors. The system is manufactured by
Hella.
375_001
The aerial circuit board with integrated transmitting
and receiving aerials is connected to the electronic
circuit board via a connector console.
The transmitting aerial comprises 40 copper
squares, whereas the 3 receiving aerials comprise 8
or 16 copper squares. The technical term for the
copper squares is "patch".
The physical properties of the reflected beams
picked up by the receiving aerials are evaluated by
the digital signal processor. Based on these
properties, the size, position and speed of the
object reflecting the beams is calculated.
375_002
Receiving aerials
Transmitting aerial
A plastic cover, referred to as the "radom", is fitted
on the control unit.
This is made from a special plastic which is ideal for
allowing the radar beams to pass through, without
causing any significant losses.
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