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.
Automated Defect Mapping
Inspection Procedure
Computerised optical scanning systems record the spatial coordinates of fabric irregularities during the final winding or inspection phase of linen fabric production. Through automated defect mapping, mills generate a digital roll profile that locates slubs, thick places, and foreign fibres. This digital record allows weavers to evaluate whether a linen bolt meets the buyer’s quality criteria before it leaves the mill, setting a clear boundary for acceptable defect density per hundred metres.
Mechanical Execution
High-speed digital cameras scan the linen surface continuously as the fabric passes over an illuminated inspection board at speeds exceeding sixty metres per minute. The image processing software identifies deviations in yarn diameter, broken warp ends, or slub clusters, plotting these anomalies onto a coordinate grid that matches the physical roll length and width. This process replaces manual inspection where weavers marked faults with plastic tags or chalk.
Sensors adjust the camera frequency to ensure the image capture remains sharp even when the winding speed of the roll fluctuates. By registering every defect’s exact position, the system prevents disputed claims between the weaver and the finishing plant.
Commercial Valuation
Buyers receive the digital map alongside the physical shipment. This document determines the final grading of the linen fabric. When the system registers fewer than five minor defects per fifty metres, the roll achieves a first-quality rating.
If the count exceeds this threshold, the system triggers an automatic downgrade, which lowers the invoice value.