Use of the interlaced data
•
Measurement data output: Starting with the second scan of a sequence, one data
point less per scan is output (example: Data point at 190.000 ° can still be out‐
put, but a data point at 190.042° is not recorded and can no longer be output).
The measurement data is output after each scan via (
LMDscandata
telegram. The
device does not merge the individual scans of a sequence; this can be done by the
customer software.
•
Field evaluation: Field evaluation is based on the merged scans of a sequence.
NOTE
This reduces the response time of field evaluation. Example: With 4-fold Interlaced
mode 100 Hz / 0.1667°, four scans are merged into one sequence: 100 Hz÷4 =
data transfer to field evaluation with 25 Hz.
•
SOPAS ET: The
Field Evaluation Monitor
tab shows the scan without shift.
Scan View
Pro
shows the individual scans as they are output with the
LMDscandata
telegram.
3.7.1.3
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 five echo signals for each measuring
beam to deliver reliable measurement results, even under adverse ambient conditions.
1
Glass
2
Fog
3
Rain
4
Dust
5
Measuring object
3.7.1.4
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.
If several filters are active, then the filters are applied sequentially to the results of the
preceding filter. Processing occurs in the following sequence: Echo filter, particle filter,
average filter. It should be noted, however, that the measurement data output may be
delayed due to the multiple calculation steps.
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
PRODUCT DESCRIPTION
30
O P E R A T I N G I N S T R U C T I O N S | LMS5xx
8013796/1ALS/2021-03 | SICK
Subject to change without notice
