Urban transit systems like airports, railway stations, and metro networks are essential public infrastructures that need strong security measures to keep passengers safe. Traditional surveillance mainly relies on video monitoring and manual oversight, which can delay responses in spotting potential threats. This research introduces the Urban Transit Vigilance and Defense System, a technology-based solution aimed at improving security through real-time speech recognition and automated threat detection. The proposed system captures audio from transit environments and processes it using real-time speech recognition technology. It converts spoken conversations into text. The transcribed data is then analyzed to find specific "alert words" that may signal security threats. When the system detects these keywords, it logs the event with exact timestamps and automatically sends notifications, including email alerts to authorized security staff. This setup allows for quick responses and helps Security Operations Center (SOC) analysts identify and manage potential risks effectively. The system combines various technologies to ensure it is scalable, efficient, and easy to deploy. The front-end interface is built using React.js, while the back-end services use Flask or Django frameworks with PostgreSQL for managing the database. It also includes features like QR code scanning for user interaction, real-time speech processing, and automated alert systems to improve its functionality. The application is designed with Docker-based containerization and CI/CD pipelines, making deployment on cloud services seamless and maintenance easier. By blending speech recognition, automated alert generation, and modern web technologies, the proposed system aims to offer a proactive and scalable security solution for urban transit settings. The Urban Transit Vigilance and Defense System provides actionable insights for security analysts, enabling quicker identification and handling of potential threats, ultimately leading to safer public transportation systems.
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