METHOD OF ESTIMATING AVERAGE LENGTH OF SHORT-STEM BAST FIBRE Russian patent published in 2020 - IPC G01B11/04 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of agroindustrial processing of bast fibres as raw material for textile and other industries, and namely for assessment of their quality. Method of estimating average length of short-stem bast fibre includes sampling fibre, preparing tape therefrom and its mechanical testing by means of gradual input due to rotation of pair of rolls in one of ends of branch pipe, from which air is sucked off from the second end to remove the pulp, separated from the tape, during the test periodical tapping is performed in the form of a wide layer in a transparent pipe, which is illuminated from below with white light, movement of the tape is carried out by means of a pair of pressed to each other and periodically rotating corrugated rolls with simultaneous sign-changing belt displacement relative to their axes, after each stop of the band, a digital image is formed on top of the nozzle with fibres located therein and illuminated from below, the image is converted into a black and white form with subsequent determination of the portion of black pixels on it, and the average length of the fibres is evaluated depending on the set of results of determining said fractions.

EFFECT: technical result is automation of testing process while ensuring accuracy of obtained results.

1 cl, 1 dwg