Wednesday, September 29, 2010

Novel use for Data-matrix codes

Data-matrix codes (DMC) are well known for part identification and traceability, but for measurement? Well that idea had me scratching my head, but according to “Data-matrix positioning systems” (MachineDesign.com, September 9th, 2010,) Pepperl & Fuchs have figured out a way to do just that.

As I understand it, the approach is to print a series of unique DMCs on a long, long strip. A camera is set up on a sliding carriage with a field of view sufficient to view six of the codes. Each code denotes a position and by interpolating between the codes the camera system can work out its location to a very high degree of accuracy.

Applications? Well I wonder about alongside railroad tracks or highways, or perhaps on very large machine tools. In fact anyway there are long travel distances this idea might have some mileage.

2 comments:

Anonymous said...

positioning with barcode is old technology, I guess 2D code is just an extension. One example: https://www.mysick.com/saqqara/get.aspx?id=im0010453

Anonymous said...

Sorry, wrong link: http://www.leuze.com/products/log/bps01_en.html