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O3M151 3D Smart Sensor Object Detection
UK
2.2 Measuring principle
The device measures according to the light runtime method based on a phase measurement with modu-
lated light�
Based on this principle, the following points must be taken into account during the measurements:
●
Clean sensor window
– Cleanliness is a basis for the reliable operation of optical sensors� Dirt or liquids reduce the light
transmission and cause light scatter� This effect can affect the resolution and the measuring range
of the sensor system�
– Water droplets on the sensor glass can lead to unclear detection of the scene� The objects are de-
tected as larger than they are in reality�
►
Installation in areas of the system which become heavily soiled must be avoided�
►
Keep sensor window clean�
●
Illumination/Range
– The measurement of objects is carried out based on the active illumination by the additional illumi-
nation unit� The emitted infrared light makes the sensor virtually independent of the ambient lighting
conditions� In case of bright sunlight, restrictions in the system range can result due to increased
signal noise�
– The measurement range is dependent on the reflectivity of the object to be detected�
– Due to the optical measuring principle the system performance can be considerably increased by
using reflective materials (Factor 3)�
●
Clear in immediate vicinity
– Objects in the immediate vicinity (1 m distance) can falsify the measured values of the sensor�
– The wall on which the sensor is mounted should not be within the sensor area�
►
Keep the illuminated area of the illumination unit in the immediate vicinity (up to 50 cm) of attached
parts clear�
sensor
O3M15x
illumination
unit
O3M950
sensor
O3M15x
illumination
unit
O3M950
Содержание O3M151
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