Radio Frequency Identification (RFID) Based Toll Collection System

An efficient utilization of communication link between RF Modems over a wireless channel to facilitate vehicle monitoring, vehicle authentication and automated toll collection on the highways is proposed. The system is implemented to automatically register vehicles getting on or off a motorway or highway, cutting the amount of time for paying toll in large queues. The detailed monthly bills will be sent to the customer at the end of the month. The customers could register and get a transmitter module and thereafter would not need to stop at toll booth whenever they get on or off the motorway. The implementation is divided into the design of two modules- the Vehicle Module (Active Tag) and the Base Module. The two modules communicate via RF modem connected to each module. These RF modules communicate over the ISM Frequency Range of 902 - 928 MHz. The Vehicle module revolves around Atmel 8051 microcontroller. This module contains an LCD panel (16×2), keypad (4×3) and an RF modem interfaced to the microcontroller through Max-232 chip. Microcontroller contains user-specific data associated with vehicle, such as the Registration Number, Engine Number and owners information along with the billing address. The base module comes with a user-interface that allows the administrator to monitor the current activities in the range, including the vehicles in range, their status, and the detailed information about any registered vehicle. Moreover both, base and vehicle module can communicate with each other through chat session.