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Marble Maze Team 20 Reliability and Safety Analysis

Marble Maze Team 20 Reliability and Safety Analysis. John Jachna. Abstract. iPhone-controlled marble maze Orientation of iPhone wirelessly sent to game board Game controller adjusts tilt of game board to match orientation of the iPhone Player must guide marble through path in maze.

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Marble Maze Team 20 Reliability and Safety Analysis

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  1. Marble Maze Team 20Reliability and Safety Analysis John Jachna

  2. Abstract • iPhone-controlled marble maze • Orientation of iPhone wirelessly sent to game board • Game controller adjusts tilt of game board to match orientation of the iPhone • Player must guide marble through path in maze

  3. Definition of Criticality Levels • Low Criticality • No personal injury occurs. Part failures are inconvenient to user but can be replaced in the field • Acceptable Rate: 10-6 failures/million hours • Medium Criticality • No personal injury occurs. Part failures could destroy the product • Acceptable Rate 10-7 failures/million hours • High Criticality • Personal injury can occur • Acceptable Rate: 10-9 failures/million hours

  4. Safety of Project • Almost entire project will be contained by game board • Moving motors may cause some safety issues • Players shouldn’t directly interact with game board • Brio Labyrinth intended for ages 6+

  5. Schematic Power MOSFETs Microcontroller Power Supply

  6. 3.3/5 V Linear Voltage Regulator(TI LM2576) Medium Criticality

  7. Microprocessor(Microchip PIC18F67J94) Low Criticality

  8. Power MOSFET(Fairchild IRF530) Low Criticality

  9. FMECA Analysis

  10. Questions?

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