NOTE
In static applications, a target with the minimum object size may not be detected if the
entire light spot width (all single spots) does not hit the object. In moving applications
such as collision avoidance, the target would be measured alternately.
0.080°
0.080°
0.080°
1
2
1
Single spots
2
object size
3.4.6
Multi-echo analysis
The distance between the device and an object is calculated via the time-of-flight of the
emitted pulse. The device can evaluate up to three echo signals for each measuring
beam to deliver reliable measurement results, even under adverse ambient conditions.
Figure 11: Multi-echo analysis: example industrial application for ports, cranes, and traffic.
1
Fog
2
Rain
3
Measuring object
3.4.7
Filter
By using digital filters to pre-process and optimize the measured distance values, the
device can be tailored to the specific requirements of the respective application. This
makes it possible to prevent virtually all faults.
The active filter functions affect the outputted measured values. It is not possible to
recalculate the original measured values from the filtered output values.
3.4.7.1
Echo filter
The echo filter screens out unwanted measurement data and signals caused by edge
hits, rain, dust, snow and other ambient conditions.
PRODUCT DESCRIPTION
3
8026338/0000/2022-02-15 | SICK
O P E R A T I N G I N S T R U C T I O N S | LRS4000
17
Subject to change without notice
