METHOD AND ARRANGEMENT FOR PRODUCING AN ENLARGED MEASUREMENT VOLUME FOR THE PURPOSE OF DETERMINING THE STRUCTURE AND/OR WINDING SPEED OF TEXTILE FIBRES ON THE BASIS OF LASER DOPPLER ANEMOMETRY
The method involves producing a laser beam (3) by a diode laser (1) and a collimator lens. A wedge prism (4) divides the laser beam into two partition beams such that the beams run on top of each other at an angle during emission from the prism to intersect the beams at a thread (8). A measuring sig...
Saved in:
Main Authors | , , |
---|---|
Format | Patent |
Language | English French German |
Published |
11.11.2009
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The method involves producing a laser beam (3) by a diode laser (1) and a collimator lens. A wedge prism (4) divides the laser beam into two partition beams such that the beams run on top of each other at an angle during emission from the prism to intersect the beams at a thread (8). A measuring signal is produced from a light reflected from the thread according to laser-Doppler-anemometry-method. The measuring signal is electronically evaluated for determining the structure and or speed of the thread. An independent claim is also included for an arrangement for contactless determination of structure and/or the speed of a running textile thread at a spinning location of a textile machine. |
---|---|
Bibliography: | Application Number: EP20070723833 |