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

Abstract

The invention relates to a method and an apparatus for contactlessly determining the structure and/or speed of a thread (8) running in the thread run (6) of a textile machine using a sensor device, wherein a laser beam (3) is produced by a light source (1, 2) and is divided into at least two partial beams (5a, 5b), which meet again at the thread (8), using a device (4) for dividing and guiding the laser beam (3), wherein the laser beam (3) which is produced by the light source (1, 2) is divided into a reference beam (5a) and a scattering beam (5b) by the dividing and guiding device (4), wherein the intensity of the scattering beam (5b) is at least twice as high as the intensity of the reference beam (5a), wherein the beams are oriented at an angle (ss) with respect to one another, even when emerging from the dividing and guiding device (4), such that they cross at the thread (8),; and wherein the transverse dimension of the reference beam (5a) is greater than the transverse dimension of the running thread (8), wherein that portion of the reference beam (5a) which passes the thread (8) is guided into the optical sensor device (9, 10, 11) which is provided for carrying out the laser Doppler anemometry method.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

The present technology described relates to improving the accuracy and efficiency of detecting small objects (such as pills) within industrial environments like manufacturers' plants. One technical effect being improved involves reducing costs compared to existing methods due to less expensive components used there instead of requiring more complex equipment. Additionally, the system uses multiple detection points along certain lines rather than just one spot, making measurements faster and easier. Overall, these improvements improve precision and reduce complexity in monitoring processes.

Problems solved by technology

Technologies have been developed related to detecting changes caused by factors affecting the accuracy of measuring objects' dimensions. One technical problem addressed in these technological solutions involves accurately controlling the size of the target area without increasing production cost while maintaining stable performance under varying conditions.

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