Manual

Leddar™One Sensing Module 20
Keeping the sensor in automatic LED power mode ensures it adapts to varying
environments. Close range objects may reflect so much light they can saturate
the sensor, reducing the quality of the measurements. This mode will adapt
the light output within the change delay setting to reach the optimal
amplitude. On the other hand, low amplitudes provide lower accuracy and
precision. The automatic LED power mode will select a LED intensity that
provides the highest intensity that avoids the saturation conditions.
NOTE: When a strongly reflective or near object is present in the field of view
while monitoring farther distances, the automatic adjustment will
reduce the effective range of the sensor (reduce LED intensity) and
may prevent detection of long range or low reflectivity objects. For
these applications, manual mode with LED power set to 100% may
be a better setting.
3.3.2. Smoothing
The smoothing algorithm increases the precision of the measurements at the
cost of the sensor reactivity. The algorithm works by averaging consecutive
measurements over a given time history. The history length of the filter is
continuously adapted as a function of the current measurement noise level. It
also changes according to the oversampling and accumulation settings. The
smoothing level of the algorithm can also be adjusted by a parameter ranging
from -16 to 16. Higher values increase the sensor precision, but reduce the
sensor reactivity. An example of the behavior of the measurement smoothing
algorithm is depicted in Figure 11 below.
0 20 40 60 80 100
8.9
8.905
8.91
8.915
8.92
8.925
8.93
8.935
8.94
8.945
8.95
Sample
Distance (m)
Smoothed
Disabled
True