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METHOD FOR INSPECTING THE QUALITY CRITERIA OF FLAT TEXTILE STRUCTURES EMBODIED IN A MULTILAYER FORM ACCORDING TO A CONTOUR
METHOD FOR INSPECTING THE QUALITY CRITERIA OF FLAT TEXTILE STRUCTURES EMBODIED IN A MULTILAYER FORM ACCORDING TO A CONTOUR
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机译：一种根据轮廓线以多层形式嵌入的扁平织物结构质量标准的检验方法
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摘要
The invention relates to a method for inspecting quality criteria of flattextile structures embodied in a multilayer form according to a contour, inparticular to woven, stitched, knitted, sewed or non-woven structure,preferably provided with, in particular cut areas or holes, separated orforming a strip, in particular for used for producing airbags. The inventivemethod is carried out with the aid of image forming inspection means, inparticular optical inspection means, preferably a linear array camera or CCD-array camera. When a relative motion between the inspected structures and thecamera is produced, the structure is arranged at least in an area and at adefined distance from the image forming inspection means preferably on theapproximately flat surface of an control table or on an inspection strip. Thetexture of the structure is analysed according to a segmentation method. Thecharacteristics like a centre of gravity, the surface, main axes etc arecalculated for the different coherent segments of the same texture. Anunivocal system of co-ordinates for the structure and corresponding structuresof the same type is defined on the basis of said characteristics, said systemis non-variable with respect to the torsion, reflection,stretching/compression and the deformation of the system and makes it possibleto define measuring points. In order to determine said system of co-ordinates,in addition to said segment characteristics, the position and the direction ofidentification threads which are intentionally introduced into the structureis taken into account. The respect of concerned distances is controlled and aquality report is produced on the basis of the measuring points which arerecorded by the system on the basis of the quality requirements of a produceror consumer preferably in distant and marginal critical areas.
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