1 / 15

Reliability and Safety Analysis

Reliability and Safety Analysis. (Left to Right) Matt Finn Brian Crone Samuel Oshin Yonatan Feleke. Project Overview. Future Cash Register The future cash register is a point of sale box designed to make wireless transactions through the use of Near Field Communications protocol.

lecea
Download Presentation

Reliability and Safety Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Reliability and Safety Analysis (Left to Right) Matt Finn Brian Crone Samuel Oshin Yonatan Feleke

  2. Project Overview • Future Cash Register • The future cash register is a point of sale box designed to make wireless transactions through the use of Near Field Communications protocol. • It will accept payments and send receipts through NFC. It will also aide the cashier with orders through voice recognition.

  3. Project-Specific Success Criteria Ability to customize the inventory via the user interface (Atom) Ability to communicate with an NFC device (dSPIC30) Ability to interface with an IR sensor to detect the presence of a user (dSPIC30) Ability to display prompts to user through LCD (dSPIC30) Ability to aid cashier by highlighting menu choices while placing order with voice recognition (Atom)

  4. Block Diagram

  5. Definition of Criticality Levels • High • System irreparable • Potential for user injury • Medium • System irreparable • Little/no potential for user injury • Low • System still functional • User inconvenience

  6. Components Under Consideration Voltage Regulator RS232 Level Translator Microcontroller NFC Controller

  7. Voltage Regulator - λP • C1 = .02 (101 to 300 transistors) • πT= 16.0 (<100˚C) • C2 = 0.0012 (3 pins) • π E = 2.0 (Ground fixed environment) • π L= 1.0 ( > 2 years) • π Q= 10.0 (Commercial Grade) • λP= (C1 x πT+ C2x πE ) x π L x πQ = 3.224 failures/106 hours

  8. FMECA

  9. RS232 Translator - λP • C1 = .02 (101 to 300 transistors) • πT= 7.0 (<85˚C) • C2 = 0.0072 (16 pins) • π E = 2.0 (Ground fixed environment) • π L= 1.0 ( > 2 years) • π Q= 10.0 (Commercial Grade) • λP= (C1 x πT+ C2x πE ) x π L x πQ = 1.544 failures/106 hours

  10. FMECA

  11. Microcontroller - λP • C1 = .28 (16-bit, MOS) • πT= 3.1 (125˚C) • C2 = 0.032 (64 pins) • π E = 2.0 (Ground fixed environment) • π L= 1.0 ( > 2 years) • π Q= 10.0 (Commercial Grade) • λP= (C1 x πT+ C2x πE ) x π L x πQ = 9.32 failures/106 hours

  12. FMECA

  13. NFC Controller - λP • C1 = .14 (8-bit, MOS) • πT= .96 (85˚C) • C2 = 0.019 (40 pins) • π E = 2.0 (Ground fixed environment) • π L= 1.0 ( > 2 years) • π Q= 10.0 (Commercial Grade) • λP= (C1 x πT+ C2x πE ) x π L x πQ = 0.5144 failures/106 hours

  14. FMECA

  15. Questions

More Related