Eye Vision Technology's displacement sensor offers both high scan rates at full measurement range and maximum resolution images (profile points). With the accurate high dynamic range (HDR), it is possible to achieve maximum contrast and a high speed of up to 100 kHz at full measurement range.
Laser Line Displacement Sensing
The measurement process employed is called laser line displacement sensing, because an object to be measured is moved under a projected laser “line.” The process is illustrated in the image below.
The EyeScan AT3D MAX. Image source: Eye Vision Technology.
The displacement sensor, at the top of the picture, projects its laser line on the circular part being inspected in the bottom part of the image. As the circular part moves along the belt, it is scanned in its entirety, and a 3D image is generated.
EyeScan AT 3D Max can achieve perfect scans even when dealing with highly reflective surfaces or dark surfaces. This means that users can inspect shiny pins on black plastic as well as differently printed labels on bottle caps. These can both shine like silver or appear in any combination of softer color nuances. The device can do so in full resolution and at full speed.
The unit employs its own EyeVision software. With just a few mouse clicks, 3D evaluations for the automotive or electronics industries can be realized, as well as evaluations for the food and beverage industry.
The EyeScan AT 3D Max supports important industry interfaces, such as UR Robot command and Profinet Stack.
With these integrations, users can quickly interface the displacement sensor with a wide variety of manufacturing or inspection systems.
Other Laser Measurement Sensors
Though Eye Vision Technology's sensor brings new levels of speed and resolution to the displacement sensor, laser sensor measurement is not a new technology, and it has other applications beyond displacement sensors. Here are few other noteworthy players.
• The DSMax from Cognex offers a 20 kHz scan rate at full measurement range and maximum resolution images (2,000 profile points). In the image below, an object to be inspected is about to roll through the device’s laser projection.
The DSMax 3D Laser Displacement Sensor. Screenshot of video courtesy Cognex.
• Micro-Epsilon offers a, wide, varied line of laser sensors, including the optoNCDT 2300LL laser line sensor. It has adjustable measuring rates of up to 49.140 kHz.
Have you used a displacement sensor before? What applications do you think this would be helpful in developing? Let us know in the comments below.