PMD Profiler Photoelectric Sensors

Two versions available:

OPD100 – one saved profile recipe, one region of interest
OPD101 – ten saved profile recipes, two regions of interest

In assembly and handling applications, the profiler does not only verify the presence of an object, but it checks whether the correct component has been used and properly installed.

A push of a button is all that is required to compare the contour of an object with the taught target contour stored in the profiler. The photoelectronic line scanner reliably detects tiny differences between nearly identical components. Since the distance is not relevant, the pmd profiler does not require complicated positioning as is the case with 1D sensors.

Thanks to the insensitivity to extraneous light, no screening or external illumination is required as is the case with camera systems performing to this high level of accuracy.

With its user-friendly color display and intuitive setting with only 3 pushbuttons, the sensor is ready for use within a few minutes without requiring any software. It is possible to either transmit information on the reject rate or the detected object profiles via IO-Link.

Inline quality control checks to ensure correct assembly of parts
Quick set-up without software
Distance-independent measurement for high tolerance on object positioning
Immunity to extraneous light – no screening or external illumination required
Optional profile visualization via software

Description

Technology

pmd time-of-flight and triangulation

The sensor works according to the triangulation principle. It projects a laser line onto the surface of the object to be measured. The pmd chip on the receiving element captures the reflected laser line. The reflected light has a clear angular offset proportional to the height profile.

The measuring range is at a distance of 150 to 300 mm in front of the sensor. Due to the perspective of the receiving element, the length of the laser line depends on the distance from the sensor to the target object (the shorter the distance to the sensor, the shorter the line). But even if the distance between the sensor and the object changes, the proportions of the object are retained. Accordingly, the contour measurement is independent of the distance. This makes alignment and positioning of the sensor very easy.