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A version of the unit is intended as a reversing sensor. This is activated
when the driver engages reverse gear. The sensor alerts the driver to many of
the possible dangers, which may be invisible behind their vehicle, by sounding
an audible alarm.
The unit will emit a slow beep when an object is detected at 90cm, a faster
beep when the object is detected at 60cm and a continuous tone when the object
is detected at 30cm or closer.
Advantages
Capacitive sensors have advantages over the more frequently used ultrasonic
devices for this application.
A fundamental difference is that a capacitive sensor is a field sensing
device rather than a beam sensing device and as such is free from blind spots
which can occur between beam lobes.
Capacitive sensors also exhibit low sensitivity to target material type and
orientation. A wire fence for example would be detected as reliably as a brick
wall by a capacitive device whereas a beam device may have difficulty detecting
it at all.
Features
Three sensing zones.
Insensitive to object material or
orientation.
Clearly defined ranges.
Could face forward or backward.
A
"field" not "beam" device.
Currently under further development for passenger car usage with a
specialist automotive partner, Sensatech and their partner feel the capacitive
collision warning sensor has significant advantages over the ultrasonic beam
system in use on some current luxury models.
If you have applications for Commercial vehicles, Truck, Bus or any other
application do not hesitate to contact us with your enquiry.
See also: Collision
avoidance | 
