EE 478 Final project Alex Ching, Kuei-Hsuan Lu, Wenjie Zheng Smart band EE 478 Final project Alex Ching, Kuei-Hsuan Lu, Wenjie Zheng
Who are we Alex Ching - Hardware Wenjie Zheng - Sensors & Algorithms Kuei-Hsuan Lu - XBee
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.
Features: Sensors Warning signals Hand gestures detection Real time watch Wireless
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
Band working mode In-Bed Mode Walking Mode Real time display Yes Heatbeat measure Temperature measure Remote control No Falling detect Warning detect
Real time clock Sensor: Real time clock sensor (I2C) Time initialization Time reset Time display on GLCD hh:mm:ss day date/month/year
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
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.
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
PCB design: Make things smaller
PCB
Hub
Case
Problems PCB circuit XBee data loss I2C addressing PIC to Arduino interface LCD
Solution Rework XBee still in progress Address changes Bypass circuit Delays and bypass capacitors
What would we change Funding Two PCB runs Better amplifier circuit Smaller package LED Matrix Add more features and gestures
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)
Questions ?