Visual Inspection
Integrated semiconductor imaging captures high-resolution pixel matrices to identify structural anomalies on running warp and weft systems. Mounted directly above the take-up roll of a modern weaving machine, a cmos array operates as the sensory receiver for automatic optical inspection systems. This sensor registers light intensity variations across thousands of individual photodetectors to construct a digital image of the moving fabric in real time.
The technology is applied in high-output mills producing technical fabrics, where even a single broken warp end or thick filling yarn disqualifies the roll.
Defect Localization
Defect localization relies on the rapid frame rate of the sensor during weaving. When a yarn breaks, the cmos array detects the altered light transmission through the shed and sends an electronic signal to the loom control unit. This stops the weaving cycle before the fault is packed into the fell of the cloth.
Processing Speed
Processing speed determines the limits of optical inspection on fast-running textile machinery. Because a cmos array processes pixels using parallel analog-to-digital converters on the same chip, it operates at speeds exceeding hundreds of frames per second. This capacity allows the inspection system to analyze fabrics moving at high velocities on air-jet looms or continuous dyeing ranges.
The analysis differentiates between superficial fly lint resting on the fabric and serious structural flaws like missing picks or misdrawn threads.
Light Source
Light source alignment ensures the sensor receives high-contrast images of the fabric texture. In typical mill installations, LED backlighting passes through the fabric web to create a silhouette of the yarn structure on the sensor surface. This arrangement allows the automated system to filter out surface hairiness and isolate the primary weave geometry.
