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MWE-650-4DSM.book Seite 33 Dienstag, 16. Mai 2006 4:42 16
MagicWatch MWE650
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Proper use
MagicWatch 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 MagicWatch is designed merely as an additional aid for reversing, it
does not relieve you of the duty to take proper care when reversing.
MagicWatch is designed for installation in large vehicles.
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Technical description
5.1
Functional description
MagicWatch consists of four built-in sensors, a controller and a display with
an integrated piezoelectronic speaker for audible and visible warning signals.
The display can be mounted on the dashboard or on the rear view mirror on
the windscreen.
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 capture any ultra-
sonic signals reflected by obstacles. The distance to the obstacle is calcu-
lated using the echo time, and signalled by the speaker using a sequence of
impulse tones. The closer the obstacle approaches, the faster the succes-
sion 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 cou-
plings). This means these are not signalled as obstacles. The system only
signals an obstacle when the space profile changes.
The display signals the position of the obstacle using four rows of LEDs.
A numerical display shows the distance in 1 cm increments.
The sensors are installed on the bumper.
Since the sensors are equipped with their own amplifiers, you can extend the
connection between the sensors and the controller to up to 10 m.
Proper use
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