<> <http://www.w3.org/2000/01/rdf-schema#comment> "The repository administrator has not yet configured an RDF license."^^<http://www.w3.org/2001/XMLSchema#string> . <> <http://xmlns.com/foaf/0.1/primaryTopic> <https://repositorio.unini.edu.mx/id/eprint/17412> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/AcademicArticle> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Article> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://purl.org/dc/terms/title> "Obstacle Detection and Warning System for Visually Impaired Using IoT Sensors"^^<http://www.w3.org/2001/XMLSchema#string> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://purl.org/ontology/bibo/abstract> "Ensuring safe and independent mobility for visually impaired individuals requires efficient obstacle detection systems. This study introduces an innovative smart knee glove, integrating machine learning technologies for real-time obstacle detection and alerting. The system is equipped with ultrasonic sensor, PIR sensor and a buzzer, with data processing managed by an Arduino Uno microcontroller. To enhance detection accuracy, multiple machine learning algorithms including Decision Tree (DT), Support Vector Machine (SVM), K-Nearest Neighbour (KNN), Random Forest (RF) and Gaussian Naïve Bayes (GNB) are utilized. A novel Voting Classifier ensemble method is proposed, effectively combining the strengths of these classifiers to maximize performance. Rigorous cross-fold validation ensures robust evaluation under varying conditions. Experimental results demonstrates that the system achieves an impressive 98.34% detection accuracy within a 4-meter range, with high precision, recall and F1 scores. These findings underscore the system’s reliability and potential to empower visually impaired users with safer, more autonomous navigation, marking a significant advancement in obstacle detection technologies."^^<http://www.w3.org/2001/XMLSchema#string> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://purl.org/dc/terms/date> "2025-02" . <https://repositorio.unini.edu.mx/id/document/8592> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Document> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://www.w3.org/2002/07/owl#sameAs> <info:doi/10.1109/ACCESS.2025.3543299> . <https://repositorio.unini.edu.mx/id/eprint/17412> <http://purl.org/ontology/bibo/volume> "13" . <https://repositorio.unini.edu.mx/id/publication/ext-21693536> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/ontology/bibo/Collection> . <https://repositorio.unini.edu.mx/id/publication/ext-21693536> <http://xmlns.com/foaf/0.1/name> "IEEE 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