Abstract:

Aiming at the problem of real-time detection signal loss, yarn diameter measurement is difficult to achieve and algorithm complexity,in this paper line array CCD technology the contour coordinates to avoid interference and obtain hairiness of yarn diameter signal is used to the measurement of yarn diameter. According to the proposed algorithm, a non-contact on-line measurement system design, and developed a experimental scheme. By the experiments of measuring the yarn diameter, realized the fast and accurate measurement of the yarn diameter, confirmed the feasibility of contour tracking algorithm; through the analysis of the impact of the diameter of pixel extraction, set reasonable range of floating threshold line; analysis of changes in different sub fragment diameter, confirmed the accuracy and stability of measurement system and measurement results, also provides certain theory basis for the online detection of yarn quality.

Key words: linear CCD, yarn deameter, contour coordinates, online measurement