Question 3 [27] A contact-less access control system is to be implemented by means of RFID cards. Assume that the system has three states (active, reading, and access). The system is initially in the active state, and transitions via the reading state when presented with a card to the access state. In the access state an LED is blinked at a rate of 1 Hz at 50% duty cycle to indicate that processing is taking place. Should access be granted, an openBoom signal is generated. Develop a hierarchical timed automaton based FSM for the system and clearly show the state refinement for the blinking LED. Question 3 [27] A contact-less access control system is to be implemented by means of RFID cards. Assume that the system has three states (active, reading, and access). The system is initially in the active state, and transitions via the reading state when presented with a card to the access state. In the access state an LED is blinked at a rate of 1 Hz at 50% duty cycle to indicate that processing is taking place. Should access be granted, an openBoom signal is generated. Develop a hierarchical timed automaton based FSM for the system and clearly show the state refinement for the blinking LED