The Latest Developments in Camera Event Capturing Technology

摘要

Paper breaks are an efficiency robbing reality on all types of paper machines and coalers. Reducing breaks has become more and more important with the increasing speed and operating complexities of today's paper and board machines. Fully digital break recording technology, using the latest CCD cameras and digital image processing, is now offering papermakers new opportunities to find and solve the many reasons causing breaks. These systems continuously monitor, in real-time, all of the critical locations from the wet end to the dry end of the paper machine and coater. When a break occurs the system downloads the event into a permanent storage, making it possible to fully analyze what took place just before and after the break. This allows the papermaker to take the necessary corrective steps to prevent the break from occurring again. Taking advantage of the latest technological advancements in digital image processing, these systems are now able to offer high image resolution, high reliability with minimal moving parts, and are able to provide automatic image analysis and alarming for holes, edge faults and sheet breaks. These systems have now been proven on all types of paper machines, from the wet end to the dry end, ranging from slower board machines to the worlds fastest machines producing LWC, fine paper, newsprint, tissue etc. This paper discusses the latest available techniques in camera break recording technology, their applications, and the results that have been achieved to date.