TY - CHAP U1 - Konferenzveröffentlichung A1 - Herpers, Rainer A1 - Jung, Norbert A1 - Reinert, Dietmar A1 - Schwaneberg, Oliver A1 - Hahne, Stefan A1 - Barth, Alexander A1 - Zilken, Oliver A1 - Vieth, Moritz T1 - Hand and Finger Protection for Circular Saws T2 - Proceedings of the 5th International Conference on Safety of Industrial Automated Systems, SIAS 2007, 12-13 November 2007, Tokyo/Japan N2 - In the presented project, new approaches for the prevention of hand movements leading to hazards and for non-contact detection of fingers are intended to permit comprehensive and economical protection on circular saws. The basic principles may also be applied to other machines with manual loading and/or unloading. Two new detection principles are explained. The first is the distinction between skin and wood or other material by spectral analysis in the near infrared region. Using LED and photodiodes it is possible to detect fingers and hands reliable. With a kind of light curtain the intrusion into the dangerous zone near the blade can be prevented. The second principle is video image processing to detect persons, arms and fingers. In the first stage of development the detection of upper limb extremities within a defined hazard area by means of a computer based video image analysis is investigated. Y1 - 2007 SP - 119 EP - 124 ER -