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V i t a l i s. ECE 477 Final Presentation Team 13  Spring 2013. Paste a photo of team members with completed project here. Annotate this photo with names of team members . Wireless Biometric Sensor. Shantanu Joshi / Aakash Lamba / Di Mo / Yi Shen. Outline. Project overview

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V i t a l i s

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  1. V i t a l i s ECE 477 Final Presentation Team 13  Spring 2013 Paste a photo of team members with completed project here. Annotate this photo with names of team members. Wireless Biometric Sensor Shantanu Joshi /AakashLamba / Di Mo / Yi Shen

  2. Outline • Project overview • Block diagram • Design challenges • Individual contributions • Project demonstration • Questions / discussion

  3. Project Overview • Most biometric sensors in hospitals are bulky and therefore reduce patient mobility. Our device solves this problem since it is lightweight and portable. • Our device is a wrist mounted biometric sensor that measures a patient’s pulse, oxygen-saturation and skin temperature. • A companion web-app receives data transmitted wirelessly from the device to our servers and thus allows the doctors and other care providers to remotely monitor the patient at all times. • Our device also has the ability to automatically trigger an alarm upon detecting anomalous readings. • In order to make our device more robust we have also added the ability to detect if the user has suffered a fall and appropriately raise an alarm.

  4. Block Diagram

  5. Design Challenges • Portability • The PCB was made as small as possible (final size was 10.41 X 5.6 cms) • The device was battery powered and had on board recharging capabilities (used breakout boards for fuel gauge and on board recharging). To maximize battery life, used a 2000mAh battery • Device secured onto wrist using a neoprene band. Sensors placed so as to minimize discomfort to wearer Final Prototype

  6. Design Challenges (2) • Alarm system • The micro detects whether readings for SPO2, temperature or pulse fall above or below preset thresholds • To notify patient, the OLED screen on the device turns red and clears only when the alarm has been transmitted via the web server • To reduce false alarms for fall detection, the accelerometer was mounted on the shoulder Accelerometer placement Alarm notification

  7. Design Challenges (3) • Device needs to communicate to central server • The Wi-Fi module automatically connects to preprogrammed SSID • Since module must send GET requests to web app (hosted on Heroku which doesn’t accept incoming TCP connections), an intermediate web site had to be setup on a local computer running an apache server to bridge the module and web app Web app UI

  8. Individual Contributions • Team Leader – Shantanu Joshi • Team Member 2 – AakashLamba • Team Member 3 – Mo Di • Team Member 4 – Yi Shen

  9. Team Leader – Shantanu Joshi • Software lead • Created the website and setup server • Worked on prototyping sensors (accelerometer, temperature sensor, fuel gauge) • Worked on setting up Wi-Fi module • Involved with packaging • Fixed various hardware and software bugs related to I2C and our final PCB

  10. Member 2 – AakashLamba • Tested and verified the power section of our design. Resolved power related bugs • Worked on packaging the device • Helped in debugging issues related to Wi-Fi and I2C • Debugged and tested final PCB • Worked on setting up the prototyping environment for PDIP package • Packaged and tested various sensors

  11. Member 3 – Mo Di • Was the main force behind getting the SPO2 sensor up and running • Created CAD models for our design • Arranged for 3D printing, which used the CAD drawings Mo Di had prepared • Played a significant role in part selection • Involved closely with final packaging • Programmed the display for our device

  12. Member 4 – Yi Shen • Was responsible for our PCB design. Created the PCB’s for both our power board and main module • Modified PCB design based on design review feedback • Populated the final PCB with components • Helped with debugging power related issues • Helped in packaging the SPO2 sensor • Set up team website

  13. Project Demonstration • An ability to determine pulse and Spo2 readings from blood light absorption. • An ability to display the user’s vital statistics on the OLED screen. • An ability to remotely monitor a users medical status from a website via secure login. • An ability to activate an alarm automatically in response to anomalous readings of vitals. • An ability to detect if the user has suffered a fall.

  14. Questions / Discussion

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