Toll collection systems utilizing modulation techniques encounter significant challenges related to signal interference and environmental conditions. The precise transmission and reception of signals are critical for modulation techniques, but they can be disrupted by physical obstacles, weather variations, and interference from other electronic devices, leading to signal degradation and potential errors. Moreover, the complexity inherent in these systems necessitates advanced infrastructure and ongoing maintenance, resulting in elevated operational expenses. Addressing these challenges requires the implementation of robust technical solutions, rigorous testing procedures, and continuous maintenance to ensure the efficient and secure operation of toll collection systems. This study aims to develop an efficient, cost-effective, scalable, and secure toll collection system using Amplitude Shift Keying (ASK) modulation. ASK modulation leverages amplitude variations to facilitate data transmission between RFID tags and readers, enabling seamless and efficient vehicle passage through toll points. The selection of the Arduino Uno microcontroller is based on its affordability and reliability, while the RC522 RFID reader and tags are chosen for their compatibility and performance. Real-time feedback is provided through an OLED display, and the MG996r metal gear servo is utilized for operating the toll barrier. ASK modulation offers several advantages in toll collection systems. Its simplicity facilitates easy implementation and reduces overall system costs, making it a financially viable option. The technique’s use of binary data representation ensures efficient and reliable data transmission while the design enhances scalability and simplifies maintenance requirements.
Keywords: Microcontroller, amplitude shift keying, intelligent systems, modulation techniques, radio frequency identification (RFID)
