Authors: Chiorescu, Sorin; GrÃ¶nlund, Anders
In the forestryâ–“wood chain the concept and the technologies of traceability are in a mature development phase. Important advances in marking and reading techniques have been made in different parts along the forestryâ–“wood chain. For Swedish sawmills the most critical information gap is located between the log sorting station and the saw intake, where the forest log batch identity disappears and the logs are mixed according to different sorting criteria. This study utilizes radiofrequency identification tags for automatic log marking/reading to develop a traceability system for logs, which is free of marking/reading, between the log sorting station and the saw intake, i.e. the fingerprint method. The originality of the fingerprint approach rests on the hypothesis that logs are separate entities with individual features. The results show that the log parameters and the search algorithm developed, combined with the negative influence of the measurement uncertainty due to bark thickness and bark damage, made it possible to achieve an individual separation for 57% of the tested logs.
Document Type: Research Article
Affiliations: Department of Wood Technology, SkellefteÃ¥ Campus, LuleÃ¥ University of Technology, SE-93187, SkellefteÃ¥
Publication date: April 1, 2004