1. EE 478 Final project Alex Ching, Kuei-Hsuan Lu, Wenjie Zheng
Smart band
EE 478 Final project
Alex Ching, Kuei-Hsuan Lu, Wenjie Zheng

2. Who are we Alex Ching - Hardware Wenjie Zheng - Sensors & Algorithms
Kuei-Hsuan Lu - XBee

3. Project User: Patient Working environment: Hospital sickroom Goal:
Monitoring patient’s medical parameters and send warning signals wirelessly.
Detect hand gestures to remotely control other devices.

4. Features: Sensors Warning signals Hand gestures detection
Real time watch
Wireless

5. Sensors Heart beat rate Room temperature Accelerometer 4. Pressure
Analog IR-Sensor with amplifier
Room temperature
I2C Temperature sensor
Accelerometer
I2C MMA8452A
4. Pressure
Analog Pressure Sensor

6. Band working mode In-Bed Mode Walking Mode Real time display Yes
Heatbeat measure
Temperature measure
Remote control No
Falling detect
Warning detect

7. Real time clock Sensor: Real time clock sensor (I2C)
Time initialization
Time reset
Time display on GLCD
hh:mm:ss day date/month/year

8. Hand Gesture Detection
Sensor: MMA8452A accelerometer.
Motion detect:
Left-tilt
Right-tilt
Up-tilt
Down-tilt
Switch mode hand gestures:
In-bed Mode
Walking Mode

9. WARNING SIGNALS 1. Low(36 BPM)/High(120 BPM) Heartbeat rate
2. High(33°C)/low(15°C) room temperature
3. Falling detection
4. ‘Need help’ hand gesture.

10. Doctor side (warning signal receiver)
Receive from :Xbee
Once receive warning:
Always: PWM sound alarm.
Warning Type
LED color
Heartbeat Warning
Yellow
Room temp Warning
Green
Falling Warning
Red
‘Need help’ Warning
Blue

11. PCB design: Make things smaller

12. PCB

13. Hub

14. Case

15. Problems PCB circuit XBee data loss I2C addressing
PIC to Arduino interface
LCD

16. Solution Rework XBee still in progress Address changes Bypass circuit
Delays and bypass capacitors

17. What would we change Funding Two PCB runs Better amplifier circuit
Smaller package
LED Matrix
Add more features and gestures

18. Current Status PCB done powered on battery Sensors receiving data
LCD library done
XBees communicating (Delays)
Testing integrated system
SD Card (Maybe)
LED Matrix (Maybe)

19. Questions ?