WABCO TAILGUARD, Описание системы

Страница: 27 / 64

27
Installation
7 .3 Notes on installing the ultrasonic sensors
Observe the following safety instructions for handling ultrasonic sensors:
„
The surface to which the ultrasonic sensor is mounted must be even and
must be at least 2 mm larger than the ultrasonic sensor (this is required
to protect the drainage holes in the rear against direct high-pressure
cleaning).
„
Ultrasonic sensors must not to be mounted in a U-profile because this
could cause reflections. WABCO recommends to mount the ultrasonic
sensors mechanically protected to avoid damage.
„
The ability to detect objects largely depends on the ultrasonic sensors'
positioning on the vehicle. Make sure that the ultrasonic sensors are
installed at a height of at least 40 cm.
„
No other vehicle components should be installed within the ultrasonic
sensor's range of vision.
„
The rate of detection depends on object surfaces:
„
Ultrasound is best reflected by smooth surfaces that are positioned at a
right angle to the sound's direction.
„
Small and unfavourable surfaces such as meshed structures, furry
or hairy surfaces at an oblique angle to the sound's direction are not
detected so easily.
„
Download the outline drawing from the internet.
Information on the ultrasonic sensors
http://www.wabco.info/i/1365
„
The position and number of ultrasonic sensors are determined by the area to
be monitored and the contour of the rear of the vehicle.
„
The TailGUARD system can monitor a maximum of 6 ultrasonic sensors.
„
Normally 15° ultrasonic sensors are used at the vehicle sides as the most
important position. These ultrasonic sensors are mounted on a vertical
surface of the rear and monitor an area between the vehicle's outside
edge at the side and the centre of the vehicle through the 15° bend in the
housing. When reversing in a narrow alley, only the area behind the vehicle
is monitored in this manner, vehicles parking next to the lane for instance,
are not.
„
A third ultrasonic sensor with a straight housing (0°) can be positioned at the
centre to improve monitoring of this vehicle section.
„
The figure below, showing only one of many possible ultrasonic sensor
positions, illustrates this. The yellow areas represent an example of the area
monitored by the ultrasonic sensors.