67
C O M F O R T A N D C O N V E N I E N C E
REVERSE GUIDING SYSTEM
9.
System may give false alarm during the heavy rain
conditions, during the snow conditions or heavy wind
conditions.
10. System will not sense the pot holes or the trenches or
drainages which are below the ground level.
11. Tilting of the spare wheel cover or rear bumper may cause
system to malfunction by sensing the spare wheel cover
or ground respectively.
12. System may give wrong indication when the vehicle is
equipped with high power radio antenna on rear side.
13. Sensor may give wrong signal if sensor is at extreme
temperatures: below -30°Celsius or above 80°Celsius.
CAUTION
1.
System performance is dependent on the reflection
angle of ultrasonic waves from the obstacle.
2.
System cannot sense the wire mesh, handrail, small
objects & some obstacle which are coming too much
below or too much above the bumper level.
3.
System cannot sense the obstacles like cotton, wool,
foam, textile or spongy surface which will absorb
ultrasonic waves easily.
4.
System may give wrong signal on reversing the vehicle
on grasslands & bumpy roads.
5.
System may give wrong signal while vehicle moving
from plain ground to slope like backing up downhill or
vice versa.
6.
System may give wrong signal by sensing the ground
when the bumper is tilted more than the normal position
or when the vehicle is heavily overloaded.
7.
System may give wrong indication when the temperature
of the obstacle is high as hot surfaces reflect fewer
sound waves less than cold surfaces.
8.
System may give wrong signal if there is an excessive
increase in humidity as it increases the sound speed (max.
by 2%) as compared to dry air
64c
