© Copyright Mahindra and Mahindra Ltd. 112020
9-53
9.
The obstacle of a conical shape may not be detected, since the
ultrasonic waves get reflected away
L
Liim
miitta
attiio
on
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off R
RP
PA
AS
S
•
System may not sense obstacles like wire mesh, handrail, small
objects which are below the bumper level.
•
System may not sense obstacles with cotton or spongy surface,
which will absorb ultrasonic waves emitted by RPAS.
•
System performance is dependent on the reflection angle of the
obstacle
•
System may give false alert with-out obstacles while reversing
the vehicle on grasslands, gravels and bumpy roads considering
it to be an obstacle.
•
System may alert you by sensing the ground when the bumper is
not fitted in its intended position or when the vehicle is
overloaded.
•
System may give false signal while the vehicle moves from plain
ground to a slope terrain and vice versa
•
System may give a wrong signal by sensing the ground when the
bumper is tilted more from the normal position or when the
vehicle is heavily overloaded
•
System may give a false signal an alarm during heavy rain, snow
and heavy wind conditions
•
The shape of the obstacle may prevent a sensor from detecting
it. Some obstacles for example as follows
•
Sharply-angled objects
•
Tall or curved curb
•
Low obstacles ( with height of 40 cm above ground level)
•
Tall obstacles with upper sections projecting outwards in the
direction of the vehicle
•
Depending
upon
the
shape
of
the
obstacle
and
other
environmental factors, the detection distance may shorten or
detection may be impossible
•
Obstacles may not be detected if they are too close to the
sensor
W14007
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