1. Eye In The SkyTCSP #8Safety and Reliability Analysis -Team 3 Joe Katz UpshamDawraSamitSuraAshwin Shankar

2. Project Overview • Portable low-cost aerial drone that can be used for reconnaissance • Relay real-time video and data, like location, heading, battery life • Take high-resolution pictures of the ground in flight • Store photos and some flight data in non-volatile memory, á la “blackbox” system. • Control drone manually via a control unit

3. Block Diagram

4. Functional Blocks • Three main functional blocks: • Power: LTC1174 (3.3V switching regulator) and application circuit, FSAL200 (analog multiplexer), DS2438 (battery monitor) and application circuit, opto-isolator • Microcontroller: AT32UC3C0256 • Sensors/Peripherals: XBee, MPU-6050 (IMU), BMP085 (altimeter), HMC6352 (compass), SD card

5. Schematic: Power

6. Schematic: Microcontroller

7. Schematic: Sensors & Peripherals

8. Reliability Calculations: Part choices • LTC1174: relatively high power and complex compared to other components on our board, high criticality failures associated with failure of this device • AT32UC3C0256: high complexity, relatively high criticality failures • FSAL200: low complexity but high criticality failures

9. Reliability Calculation: LTC1174 Switch-mode power supply • Model: λP =(C1 πT +C2 πE)πQπL • λP =Total failure rate: 1.86x10-7 per hour

10. Reliability Calculation: AT32UC3C0256Microcontroller • Model: λP = λBDπMFGπTπCD + λBPπEπQπPT + λEOS • λP =Total failure rate: 4.619x10-7 per hour

11. Reliability Calculation: FSAL200 Multiplexer • Model: λP =20λBπTπQπE • λP =Total failure rate: 6x10-6 per hour

12. FMECA: Power

13. FMECA: Microcontroller

14. FMECA: Sensors

15. Summary • Relatively low reliability • Even if this product were brought to market, production volumes and amount of use would be very low • Intended for use in relatively remote areas • Software will be able to monitor for some low-criticality failures

16. Feedback • Questions?