v
+
A
S
A
S
A
S
L
S
Z
Figure 14: Stopping distance as a function of the vehicle’s speed
v
Speed
S
A
Stopping distance
Z
Supplements
S
L
Protective field length for the relevant range of speeds
S
A
= S
Br
+ S
AnF
+ S
AnS
where:
•
S
A
= stopping distance in millimeters (mm)
•
S
Br
= braking distance, from the vehicle documentation, in millimeters (mm)
•
S
AnF
= distance covered during the vehicle control’s response time (including
signal propagation time), from the vehicle documentation, in millimeters (mm)
•
S
AnS
= distance covered during the response time of the safe multibeam scanner
in millimeters (mm)
The distance S
AnS
depends on the response time of the safe multibeam scanner
and the vehicle’s speed. The distance S
AnS
is calculated using the following for‐
mula:
S
AnS
= t
R
× V
max
where:
°
t
R
= response time of the safe multibeam scanner in seconds (s)
°
V
max
= maximum speed of the vehicle, from the vehicle documentation, in
millimeters per second (mm/s) (If you define a number of monitoring cases
with different protective fields: V
max
= maximum speed of the vehicle in the
current monitoring case)
Further topics
•
4.3.6.4
Calculation example for the protective field length
Calculation example for the protective field length S
L
S
L
= S
A
+ TZ + Z
F
+ Z
B
where:
•
S
L
= protective field length in millimeters (mm)
•
S
A
= stopping distance in millimeters (mm)
4
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