Rotary Die Scoring Stress Wave Signal Acquisition
Real-time acoustic stress wave monitoring on rotary die scoring lines detects paperboard matrix micro-cracking instantaneously, reducing convert scrap by up to 80 percent.
High Speed Digitization
Signal Capture
Recording transient phenomena on high-speed paper machinery requires converting analog sensor voltages into digital values at megahertz sampling rates. Through high speed digitization, quality control systems can resolve surface imperfections and thickness variations that occur over fractions of a millimeter on a fast-moving web. This method converts continuous physical measurements into discrete data points for instant computational analysis.
Digitization Process
Web inspection scanners must capture thousands of scans per second to keep up with modern paper machines running at two thousand meters per minute. A delay in the analog-to-digital converter would blur the signal, making it impossible to distinguish a tiny pinhole from a harmless water spot. Specialized signal boards handle the data stream by caching the digitized values before sending them to the central image processor.
This design prevents data bottlenecks that might otherwise cause the inspection software to drop critical frames during the run.
Analysis Resolution
High-resolution digital files generated by these converters allow mill engineers to analyze high-frequency vibrations in the press section. These vibrations can stem from damaged bearings or deformed roller coverings. Identifying these patterns early lets maintenance teams schedule interventions before the defect shows up as a repetitive pattern on the finished paperboard.