Intended use
magic watch
34
4
Intended use
MAGIC WATCH is an ultrasonic reverse warning system. When reversing,
it monitors the space behind the vehicle and provides an audible and visible
warning signal for any obstacles it detects.
Since MAGIC WATCH is designed as an additional aid for reversing; it does
not
relieve you of the duty to take proper care when reversing
.
MAGIC WATCH is designed for installation in cars.
5
Technical description
5.1
Functional description
MAGIC WATCH consists of four built-in sensors, a controller, a connection box
and a piezoelectronic loudspeaker for audible warning signals. The piezoelectric
loudspeaker is fitted on the parcel shelf or boot cover.
It measures distances based on the echo time principle. The four sensors
constantly emit ultrasonic signals when you reverse.
The sensors contain both transmitters and receivers, and pick up any
ultrasonic signals reflected by obstacles. The distance to the obstacle
is calculated using the echo time, and signalled by the speaker using
a sequence of impulse tones. The closer the obstacle approaches,
the faster the succession of warning tones.
The DSM (digital signal memory) function creates a space profile during the
measurement, which records any small fixed objects (such as trailer
couplings). This means these are not signalled as obstacles. The system
only signals an obstacle when the space profile changes.
In addition to the sensors, the RV-29-T130 camera is also connected to the
reverse warning system. This transmits an exact image of the space for
reversing onto the RV-35 LCD monitor mounted in the vehicle. The sensors
measure the distance in centimetres and provide a graphic image. The monitor
displays the situation behind the vehicle as well as a graph with four coloured
bars and a distance display.
Information on the function and operation of the RV-29-T130 camera and the
RV-35 monitor can be found in the enclosed installation and operating manuals.
MWE-850-XXL-4.book Seite 34 Freitag, 8. Juli 2005 10:29 10
