SICK LMS400, Онлайн руководство пользователя

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© SICK AG · Germany · All rights reserved · Subject to change without notice
8011984/YSZ3/2016-02-04
Chapter 3
Configuration
Online help
LMS400 laser measurement sensor
How to activate the extended RIS detectivity:
3.6 Filter
The LMS400 has digital filters for the pre-processing and optimisation of the measured
distance values.
Notes

You can combine the filters as required.

If several filters are active, then the filters act one after the other on the result of the
previous filter. The processing in this case follows the following sequence:
– edge filter
– median filter
– range filter
– mathematical filter

Active filter functions change the measured values that are output. It is not possible to
convert filtered output values back to the original measured values.
3.6.1 Contour filter
Edge filter
The edge filter prevents incorrect/extreme distance values at edges that result from it not
being possible to determine a distance value for the previous or next point (e.g. if the
previous/next measured point was too dark or outside the measuring range of 3 metres).
With the edge filter enabled, the LMS400 also sets a distance value to 0 at each edge.
Note Using the edge filter, points can be completely suppressed at the outer edges of the object.
In this case the width determined for an object is too narrow by up to 2 × the angular
resolution.
How to activate the edge filter:
 Open in the P
ROJECT TREE
, LMS400-XX00, P
ARAMETER
, B
ASIC PARAMETER
the device page
A
DVANCED PARAMETERS
.
 Select there in the A
DVANCED DEVICE PARAMETERS
area the option D
ARK
or L
IGHT
.
On this subject please read the section “Edge filter” in the chapter “Product description” of
the LMS400 operating instructions.
 Open in the P
ROJECT TREE
, LMS400-XX00, P
ARAMETER
the device page F
ILTER
.
 Select there in the C
ONTOUR
area the option A
CTIVATE EDGE FILTER
.