question archive xit portals (See video at http :l/tinyurl
Subject:Electrical EngineeringPrice: Bought3
xit portals (See video at http :l/tinyurl.com llbctzut )at airports are designed to prevent eople ?orn going into the secure areas through their exits . These exit portals are nclosed by two doors , Door 1 on the secure side , and Door 2 on the non -secure side of 1e airport . '0 ensure one—way traffic from the secure side to the non—secure side of the airport, the ?owing two rules must be observed :(1) at no time are both doors allowed to be open oncurrently, and both doors must be closed before any one will open; (2) door 1 may nly be open if Door 2 is closed and there are no passengers inside the portal . Vhen there are no passengers , both doors remain closed .When passengers approach the ortal from the secure area , Sensor 1 outside the exit portal detects the presence of pproaching passengers . Door 1 will open for one cycle and close afterward , providing lat both rule (1) and rule (2) are obeyed . If Sensor 2 inside the exit por1al detects the resence of passengers inside the portal , Door 2 will open to allow passengers to exit to 1e 1101'] -5ECL11'E area . 1 this problem , we would like to implement the controller of the exit portal using a nite state machine with two inputs and two outputs . 1puts : a a 1 = 0/1 Senor 1 detects that passengers are not present fpresent .S2 = 0/1 Senor 2 detects lat passengers are not present .v'present . Iutputs a '1 = 0/1 Door 1 is closed [open . \ a I2 = 0/1 Door 2 is closed [open . Iraw the state diagram as a Moore machine . Make sure you clearly label everyTl'Jing