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  1. Sensing automobile occupant position with optical triangulation.

    Article - En anglais

    The performance of the SafetyShield sensing system duplicates earlier experience with precision industrial sensors in indicating that double triangulation is a valid technique for avoiding errors due to nonuniform surface reflection or a nonsymmetrical beam intensity pattern.

    The application differ in that industrial sensors typically use double triangulation to provide maximum accuracy while the occupant position sensor use it to reduce the triangle base and produce a compact unit.

    The use of an active optical sensor with a 10 kHz modulated beam has proved to be practical for air bag systems.

    Compared with acoustic and passive optical sensors, it provides accurate, high-speed response, avoids interference from outside light sources, and is relatively low-cost configuration.

    Mots-clés Pascal : Application, Coussin sécurité automobile, Réflexion optique, Modulation optique, Mesure de distance, Prise décision, Erreur, Méthode numérique, Focalisation, Théorie approximation, Aberration optique, Résolution problème, Géométrie, Capteur optique, Théorie

    Mots-clés Pascal anglais : Optical triangulation, Position sensing detector, Nonuniform surface reflection, Nonsymmetrical beam intensity pattern, Application, Automobile air bags, Light reflection, Light modulation, Distance measurement, Decision making, Errors, Numerical methods, Focusing, Approximation theory, Aberrations, Problem solving, Geometry, Optical sensors, Theory

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 96-0125540

    Code Inist : 001D12. Création : 199608.