SICK LD-LRS - Output of Measured Values; Multi-Echo Analysis

NOTE
The laser diode heats up with each laser pulse. Like all semiconductors, a laser diode is
destroyed by excessive temperatures. The pulse rate is therefore limited.
The maximum pulse rate of the laser diode must never exceed 14.4kHz. The maximum
pulse rate is determined by the number of revolutions per second of the head and the
angular resolution.
The average pulse rate must not exceed 10.8kHz. The average pulse rate is deter‐
mined by the maximum pulse rate and the size of the scan range.
•
For a scan range of 360°, the average pulse rate is equal to the maximum pulse
rate.
•
For a scan range <360°, the average pulse rate is lower than the maximum pulse
rate.
Table 4: Examples for the maximum and average pulse rate
Scan
range
Revolu‐
tions of
the head
Angular
resolution
Maximum
pulse rate
Average
pulse rate
LD-
LRS3601/
3611
LD-
LRS36
00
Example 1 360° 15Hz 1/2°=0.5
°
10.8kHz 10.8kHz x x
1)
Example 2 300° 10Hz 1/4°=0.2
5°
12kHz 10kHz x x
Example 3 300° 5Hz 1/8°=0.1
25°
12kHz 10kHz x x
1)
Available for raw data measurement only (field application)
3.4.8 Output of measured values
The device outputs the following measured values at its data interfaces:
•
Profile of the field of view in two-dimensional polar coordinates
•
Content of one revolution (360°): Number of the profile emitted, profile counter,
sector numbers, step width, number of points per sector, time stamp for start/end
of each sector, direction at the start/end of each sector, value and direction of the
distances measured, status
NOTE
It is only possible to output all measured values of a 360° scan in real time using the
Ethernet interface.
3.4.9 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.
3 PRODUCT DESCRIPTION
18
O P E R A T I N G I N S T R U C T I O N S | LD-LRS 8016506/1G07/2020-11-08 | SICK
Subject to change without notice