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Project PRINT TCSP 8 – Reliability & Safety Analysis

Project PRINT TCSP 8 – Reliability & Safety Analysis. Team 8 – Siddharth Bhosale. Project Abstract. Printer power management system. Use the power indicator LED as a light sensor. Control printer's power based on light levels. Route incoming print jobs to local storage/printer.

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Project PRINT TCSP 8 – Reliability & Safety Analysis

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  1. Project PRINTTCSP 8 – Reliability & Safety Analysis Team 8 – Siddharth Bhosale

  2. Project Abstract • Printer power management system. • Use the power indicator LED as a light sensor. • Control printer's power based on light levels. • Route incoming print jobs to local storage/printer.

  3. Criticality Levels • High Criticality • Could lead to user injury • Medium Criticality • Device not working, cannot be repaired • Low Criticality • Repairable problems

  4. Components Chosen • PIC32MX795F512H Microcontroller • High complexity, 64 I/O pins • LM3102 Voltage Regulator • High temperature • Vout greater than 3.6 could burn components • DK1A-L-3V-F Power Relay • Carries 110 VAC • Risk of injury if not handled properly

  5. Reliability Analysis Parameters

  6. PIC32MX795F512H Microcontroller λP = (C1 x πT + C2 x πE) x πQ x πL λP = (0.56 x 0.10 + 0.032 x 2) x 10 x 1 λP = 1.2 Failures / 106 hours of operation MTTF = 1/ λP = 833,333 hours = 95 years

  7. LM3102 Voltage Regulator λP = (C1 x πT + C2 x πE) x πQ x πL λP = (0.010 x 0.10 + 0.0091 x 2) x 10 x 1 λP = 0.192 Failures / 106 hours of operation MTTF = 1/ λP = 5,208,333 hours = 594 years

  8. DK1A-L-3V-F Power Relay λP = (C1 x πT + C2 x πE) x πQ x πL λP = (0.010 x 0.10 + 0.0016 x 2) x 10 x 1 λP = 0.042 Failures / 106 hours of operation MTTF = 1/ λP = 23809524hours = 2716 years

  9. FMECA

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