1. [ Rhythm Reloaded ] Team 6 CEAC Presentation

2. Team 6 Reintroduction Andy Gabler Ben Moes Nathan Brinks David van Geest

3. Outline I.Project Introduction II.Design Norms III.Market Research IV.Major Decisions V.Progress VI.Challenges VII.Conclusions VIII.Questions

4. Project Introduction A wireless electronic stethoscope that will: A wireless electronic stethoscope that will: Aid in auscultation Aid in auscultation Record digital audio data from the patient Record digital audio data from the patient Perform frequency filtering Perform frequency filtering Store the audio files on the device Store the audio files on the device Transfer the audio files to a computer via USB Transfer the audio files to a computer via USB Contain these features in a convenient media- player like form-factor Contain these features in a convenient media- player like form-factor IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

5. Technical Block Diagram IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

6. Design Norms Transparency: must be easy to use, no technical experience required Transparency: must be easy to use, no technical experience required Stewardship: must protect the user, patient, and environment. HIPAA, Latex Free, RoHS Stewardship: must protect the user, patient, and environment. HIPAA, Latex Free, RoHS Integrity: must provide an accurate representation of the sounds produced by the body Integrity: must provide an accurate representation of the sounds produced by the body IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

7. Market Research Mechanical Stethoscopes Chest Piece: Metal Casing with Diaphragm Chest Piece: Metal Casing with Diaphragm Ear Piece: hollow tubing with spring Ear Piece: hollow tubing with spring Electrical Stethoscopes Preserve look Preserve look Bulky and Heavy Bulky and Heavy IR data Transfer IR data Transfer IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

8. Medical Community Survey 30 participants: 30 participants: 21 nurses (70%), 2 doctors (7%), 6 students (20%), and 1 Nurse Practitioner (3%) Overall favorable response IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

9. Medical Community Survey 78% would use the device if it was purchased for them by their employer 78% would use the device if it was purchased for them by their employer 18% Yes, 46% Unsure, 36% No, if payment required 18% Yes, 46% Unsure, 36% No, if payment required IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

10. Medical Community Survey Average price: $150 Average price: $150 47% report hearing difficulties 47% report hearing difficulties 20% report uncomfortable earpieces 20% report uncomfortable earpieces IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

11. Microprocessor Decision Main Criteria: Main Criteria: USB Device functionality USB Device functionality DSP Functionality (Hardware Multiply) DSP Functionality (Hardware Multiply) Power consumption Power consumption Clock Speed Clock Speed RoHS compliance RoHS compliance Minor Considerations Minor Considerations Available memory, removable media interface, GPIO, ADC, price, dev kit Available memory, removable media interface, GPIO, ADC, price, dev kit ReintroductionDesign NormsSurveys μ Processor OS ChallengesProgress ResourcesFeasibility

12. Microprocessor Decision First choice: Freescale Coldfire MCF5251 First choice: Freescale Coldfire MCF5251 Development Problems: Development Problems: No Ethernet on dev board No Ethernet on dev board File transfer rate over serial File transfer rate over serial Memory image conversion from binary to SREC Memory image conversion from binary to SREC Second Choice: Freescale Coldfire MCF5275 Second Choice: Freescale Coldfire MCF5275 Onboard Ethernet Onboard Ethernet Full OS support Full OS support IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

13. OS Decision Main Criteria: Main Criteria: Hardware Support Hardware Support Open-Source Code Open-Source Code User Community User Community Documentation Documentation Code Footprint Code Footprint Familiarity to team Familiarity to team Price Price Multi-tasking Multi-tasking IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

14. OS Decision Matrix IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

15. Wireless Decision Pros of Wireless: Pros of Wireless: No Wires! No Wires! Simpler for User Simpler for User Professional Professional Cons of Wireless: Cons of Wireless: Separate Power Supply Separate Power Supply Fidelity Fidelity Cost Cost IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

16. Wireless Decision Considerations Considerations Wireless Options Wireless Options Range Range Reliability Reliability Not too much more work Not too much more work Development Time Development Time IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

17. Wireless Decision Choice: F2M03MLA: Choice: F2M03MLA: Benefits: Benefits: Made for Streaming 16bit Audio Made for Streaming 16bit Audio Small Efficient Package Small Efficient Package Full FCC Qualification Full FCC Qualification Built in Firmware Built in Firmware Deterrents: Deterrents: Cost Cost IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

18. Progress uClinux running on development board out of flash uClinux running on development board out of flash U-Boot bootloader development is complete U-Boot bootloader development is complete LCD driver complete LCD driver complete I2C driver complete I2C driver complete QSPI driver complete QSPI driver complete FIR filters progressing FIR filters progressing Two daughterboards designed and received Two daughterboards designed and received Chestpiece microphone selected Chestpiece microphone selected Chestpiece casing machined Chestpiece casing machined IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

19. Progress IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

20. Progress IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

21. Progress IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

22. Challenges Atmospheric Atmospheric Open source software != functional Open source software != functional Misleading Bluetooth product documentation Misleading Bluetooth product documentation Meshing assembly with C Meshing assembly with C Prototyping Prototyping Intellectual Property Discussion Intellectual Property Discussion Learning to write Linux software Learning to write Linux software IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

23. Team has made progress on many aspects Team has made progress on many aspects Project is technically feasible Project is technically feasible Time constraints will limit scope of success Time constraints will limit scope of success IntroductionDesign NormsMarket Research Major Decisions ProgressChallengesConclusion

24. Questions?