Error Factors - Pepperl+Fuchs SmartRunner 3-D ToF Manual

SmartRunner 3-D ToF
Installation
3.4

Error Factors

There are some influencing factors that can affect the measurement of the sensor and limit the
measurement accuracy. You should consider these when planning your application.
Temperature
The temperature has a significant influence on the measurement behavior of the sensor.
• Noise in the sensor increases as the temperature increases.
• The sensor requires a stable temperature. Measurement accuracy varies with tempera-
ture fluctuations even if the total temperature is within the permissible range.
• The sensor requires a warm-up time to reach a stable operating temperature.
• Note the operating temperature range of -20 °C ... 45 °C. Reliable operation of the camera
can no longer be guaranteed in temperatures outside the operating temperature range.
• If the maximum permissible sensor temperature is exceeded, the frame rate is reduced.
Optimal heat sink must be ensured for proper functioning. Mount the sensor over as wide an
area as possible on thermally conductive surfaces.
Ambient light
The measurement is based on the reflection of the light emitted by the sensor, so any addi-
tional light, such as artificial light sources and sunlight, may affect the measurement results.
Avoid using the sensor in bright sunlight. Ensure that the sensor is protected from overexpo-
sure to ensure that the correct reflection is measured.
Scattered light
Reflections inside or behind the camera lens can produce scattered light. Scattered light is
easily produced by bright surfaces in the immediate vicinity of the light source. Avoid placing
objects in the scene that are not part of the planned shot. In particular, mirrors or other shiny
surfaces/objects should be avoided in the capture area. Avoid placing the sensor flat in the
middle of an area.
Figure 3.4
18
Shiny surfaces in the capture area