Embedded Automotive Door Control System Doors2 Presented by: Kevin Forker Sheela Hiremath Demo Given by: Sheela Hiremath

Unique Feature of System The main controller is composed of separate controllers Each door has its own controller

What Does Feature Support? Each door controller controls only the features each door contains Divides functionality so features can be added or removed to an individual door

Key Model – Class Diagram Gives whole picture of the system All dynamic model are based off of the class diagram Shows the classes of the system and the relationships between them

Model Door Control System SensorsADCActuators TorqueUser InterfaceReverseMirror Limit Switch Button Gear BackDoorFPDoorDrDoor Lock Controler AutoLock Controler Window Controller Passenger Window ControllerDRWindow Controller Mirror Controller Mirror Positioning Controller Mirror Setting Controller Lck MtrWin. Mtr.Mir. Mtr.

Model Cont. Button Lock Controller Switch Mirror Positioning Controller Mir. Mtr Mirror Limit Gear Win. Mtr. Torque Lck. Mtr. Included In Auto Locks Doors Monitors Torque Adjust Windows Check Reverse Gear Adjust Mirror Check Min. & Max Mir. Ang.

Promela and Xspin How was the system modeled? –Each state diagram was a separate promela. Therefore 3 files were used corresponding to Locks, Windows, and Mirrors LTL Properties –Safety – A bad thing never happens. –Liveness – Something good eventually happens.

Safety The passenger’s window will never move if the window lock is engaged. [](FP_w_lock -> <>(FP_State == sFP_Stop)) The window will always stop when the torque reaches its limit. [](DR_torquelimit -><> (DR_State == sDR_Stop)

Liveness The right mirror will eventually tilt down when the car is put in reverse and the right mirror is selected. <>( (RIGHT_MIRROR && ReverseDown) -> <> RMirDown) The left mirror will eventually move down when the left mirror is selected and the down button is pushed. <>((LEFT_MIRROR && press(L_Down)) -> <> DOWN)

Demo of Prototype 2 or 4 door capability Ability to lock/unlock doors (manual or auto.) Ability to move windows up/down Window lock to disable pass. windows Express Roll Down for driver Ability to move mirrors up/down/left/right Ability to store mirror positions in memory Ability to restore mirror positions from memory Full tilt down of right mirror when car in reverse

Lock Scenarios Automatic Locks Press “lock” -> locks every door Press “unlock” -> unlocks every door Manual Locks Press “M_lock” -> locks the individual door Press “M_unlock” -> unlocks the individual door

Window Scenarios Press “up” -> rolls window up Press “fp_up” -> driver rolls up Ft Pass window Press “w_lock”->locks the pass. window controls Press “fp_up”-> Driver can roll down pass. window Press “up” -> Pass. cannot roll down their window Pressing “w_unlock” restores functionality Pressing “down” for t>1s starts express roll down Pressing “down” again stops express roll down

Window Scenarios Cont. Creating an obstacle Choose a window from the drop down box Press ‘o’ to create obstacle Press “up” and window doesn’t move Press ‘l’ to remove obstacle Conflicts

Mirror Scenarios “left” selects left mirror “up” moves mirror up “reverse” & “right” tilts right mirror completely down Memory Functionality “set” “one” saves mirror pos. in memory one “one” restores mirror to pos. in memory one