Auto Barrier Parking Access System

SEECS PARKING ACCESS SYSTEM

SEECS PARKING ACCESS SYSTEMPhase 1

ContentsBlock Diagram2Parking Entry2Parking Exit3System Components5Inductive Loop Sensor System5Theory of Operation5AVR Controller Boards7Electronic Components Used10Working14Flow Chart (Parking Entry)14Explanation Parking Entry15Flow Chart (Parking Exit)16Explanation Parking Exit17Interfacing of different components18Scheduled Performance Checks19Recommendation: Alteration in inductive loop sensor20

SEECS PARKING ACCESS SYSTEMBlock DiagramParking EntryMotor PowerBarrier up SignalCustom-made controller board + sensorCard Authentication Signal

Barrier MotorBarrier motor control board (factory made)RFID Card Scanner

Barrier down Signal

Feedback (handled by factory-made board)

Inductive Loop Sensors

The entry system consists of RFID access panel, an auto barrier (MAG IntelliBarrier, series BR500) and two inductive loops installed inside ground. The barrier opens when a valid RFID is shown to the scanner.Loop 2 controls closing of the barrier. A vehicle exiting the loop 2 indicates it has passed the barrier and it is safe to close it now. Loop 1 is a secondary safety loop which prevents the barrier from closing in case a vehicle is present under it. The barrier does not close if a vehicle is over either loops.

Loop 1Loop 1 was pre-installed and consists of multiple turns of