FMECA Failure No Failure Mode Possible Cause Failure Effects by xuyuzhu

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									 Failure No.   Failure Mode     Possible Cause           Failure Effects   Method of      Criticalit   Remarks
                                                                           Detection      y

 A1            Output = 0V      Caused by a failure of   Total Device      Observation    Low
                                any component within     Failure
                                functional block or
                                external short
 A2            Output > 3.3     Failure of a MAX     Potential             Observation    High
               V                1651                 damage to XBee
                                                     Pro,
                                                     Microcontroller
 A3            Output > 5V      Failure of MAX 1649 Potential              Observation    High
                                                     damage to RFID
                                                     reader
 A4            Output out of    Failure of MAX 1649, Out of spec           Observation    High
               tolerance        1651 or passive      operating
                                components such as   voltage;
                                capacitors           unpredictable

Failure No.    Failure Mode     Possible Cause    Failure Effects    Method of     Criticality         Remarks
                                                                     Detection

B1             Data not         Failure of        Data cannot be     Observation   Low
               retrieved from   microcontroller   sent to the
               RFID reader      or error in       micro from the
                                software          RFID reader
B2             Blank LCD        Failure of        Data cannot be     Observation   Low
               screen           microcontroller   sent to the LCD
                                or error in       screen
                                software
B3             No connection    Failure of        Communication      Observation   Low
               with the         microcontroller   error with the
               kitchen server   or error in       server
                                software

								
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