There is described a safety system (1) having a hazard area (2) containing a reference pattern (3), and a vision sensor (4) having an acquisition module (5) for acquiring an image containing the reference pattern (3) in an area portion (P) of the hazard area (2); a memory (6) containing a number of discrimination thresholds (SCi) related to respective predetermined light ranges (Li); and a number of computing modules (Ai), each of which has a binarization module (Bi) for discriminating the pattern in an image section (11) as a function of a respective discrimination threshold (SCi), and a decision module (Ci) which determines a non-intrusion state when a predetermined match is found between the discriminated pattern and the reference pattern; the sensor (4) also having a generating module (12) which determines a non-intrusion condition when at least one of the computing modules (Ai) determines a non-intrusion state.

R. Musiani, L. Di Stefano. (2006). Safety system vision sensor and relative operating method.

Safety system vision sensor and relative operating method

DI STEFANO, LUIGI
2006

Abstract

There is described a safety system (1) having a hazard area (2) containing a reference pattern (3), and a vision sensor (4) having an acquisition module (5) for acquiring an image containing the reference pattern (3) in an area portion (P) of the hazard area (2); a memory (6) containing a number of discrimination thresholds (SCi) related to respective predetermined light ranges (Li); and a number of computing modules (Ai), each of which has a binarization module (Bi) for discriminating the pattern in an image section (11) as a function of a respective discrimination threshold (SCi), and a decision module (Ci) which determines a non-intrusion state when a predetermined match is found between the discriminated pattern and the reference pattern; the sensor (4) also having a generating module (12) which determines a non-intrusion condition when at least one of the computing modules (Ai) determines a non-intrusion state.
2006
EP1857974
R. Musiani, L. Di Stefano. (2006). Safety system vision sensor and relative operating method.
R. Musiani; L. Di Stefano.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/33527
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