Integrating Four Point Demerit Scoring with Real Time Loom Monitor Logs
Integrating real-time loom telemetry with four-point demerit scoring automates fabric grading by mapping machine stop pulses directly to physical defect coordinates.
Optical Line Scan Sensors
Surface Inspection Technology
High-speed imaging systems for the continuous monitoring of moving webs detect physical anomalies in fabric production. These optical line scan sensors capture data one pixel-row at a time to build a seamless high-resolution image of the linen as it passes over a light box. This method identifies slubs, holes, oil stains or thick ends that are invisible to the human eye at high processing speeds.
Signal Processing
Photodiode arrays within the camera convert reflected or transmitted light into digital signals for real-time analysis. The software compares these inputs against a golden sample or a set of tolerance parameters defined by the mill. When optical line scan sensors identify a deviation, the system logs the exact coordinate and classifies the defect type.
Integration with automated marking systems allows the loom to stop or the finishing machine to tag the selvage for later removal. Using multiple cameras across the width of the fabric ensures complete coverage even on wide-width looms. This constant vigilance reduces the volume of sub-standard cloth reaching the final inspection table.
Maintenance Threshold
Precision of the detection depends on the cleanliness of the lens and the stability of the light source. Accumulation of flax dust can occlude the view and cause false positives.