Inxpect SRE 200 Series - 7.5 Calculation of range of distances

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Inxpect SRE 200 Series| Instruction manual v1.5 DEC 2023 |Inxpect SAF-IM-200S_5m_7_00047_en_v1.5|© 2021-2023 Inxpect SpA
7. Sensor position
Example 1
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maximum vehicle speed = 2000 mm/s
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machinery stopping time =0.5 s
T = 0.1 s + 0.5 s = 0.6 s
S =2000 * 0.6 + 200 = 1400 mm
7.5 Calculation of range of distances
7.5.1 Introduction
The range of detection distances for a sensor depends on the inclination (α) and the installation heights (h) of the
sensor. The detection distance of each detection field (Dalarm) depends on a distance d that must be within the
range of distances allowed.
The formulas for calculating the distances are reported as follows.
WARNING! Define the optimum sensor position according to the risk assessment requirements.
7.5.2 Legend
Element Description Measurement unit
α Sensor inclination degrees
h Sensor installation height m
d Detection distance (linear)
Must be within the range of distances allowed
(see "Installation configurations" below).
m
Dalarm Detection distance (real) m
D
1
Start detection distance (for configuration 2 and
3); end detection distance (for configuration 1)
m
D
2
End detection distance (for configuration 3) m
7.5.3 Installation configurations
For the S201A model, three configurations are possible based on the inclination of the sensor (α):
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α ≥ +13°:configuration 1, the field of view of the sensor never intersects the ground
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-7° ≤ α ≤ +12°: configuration 2, the upper portion of the field of view of the sensor never intersects the
ground
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α ≤ -8°:configuration 3, the upper portion and the bottom portion of the field of view always intersect the
ground
For the S203A model, three configurations are possible based on the inclination of the sensor (α):
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α ≥ +8°:configuration 1, the field of view of the sensor never intersects the ground
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-5° ≤ α ≤ +7°: configuration 2, the upper portion of the field of view of the sensor never intersects the
ground
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α ≤ -6°:configuration 3, the upper portion and the bottom portion of the field of view always intersect the
ground
Note: the positive sign (+) indicates the tilt up, while the negative sign (-) the downward tilt.
7.5.4 Calculate the range of distances
The range of detection distances for a sensor depends on the configuration:
Configuration Range of distances
1 From 0 m to D
1
2 From D
1
to 5 m
3 From D
1
to D
2