Design and Construction of Automatic Railway Crossing Gate Control Using Proximity and Infrared Sensors Based on Omron CP1E E30-SDRA PLC. West Science Interdisciplinary Studies, [S. l.], v. 2, n. 09, p. 1732–1739, 2024. DOI: 10.58812/wsis.v2i09.1271. Disponível em: https://wsj.westsciences.com/index.php/wsis/article/view/1271. Acesso em: 15 apr. 2025.