Transcript Link - Purdue College of Engineering

Vitalis
Wireless Biometric Sensor
Schematic and Theory Operation
ECE 477 - Spring 2013
TEAM 13
Team Members:
Aakash Lamba
Di Mo
Shantanu Joshi
Yi Shen
Presenter: Yi Shen
Project Abstract
The aim of the project is to create a prototype of a portable wireless biometric
sensor that can provide doctors/nurses with an efficient way of handling
multiple patients in a hospital environment. The main advantages this device
would have over conventional monitors are it’s portability, unobtrusive nature
and size. The battery-powered device is mounted on the wrist and monitors
vital health parameters such as pulse rate, SpO2 and skin temperature then
transmits the information via WiFi for remote web access. In addition, a NFC
chip embedded on the device will allow immediate access to a patient’s charts
on any NFC compatible device. The device will also include fall detection as
well as a manual and automatic alarm system.
Block Diagram
Overall Schematic
Schematic: Microcontroller
Headers
SPI
ATmega1284
JTAG
Power Supply
• Supply Voltage
– Lithium Battery Outputs
3.7 Volts (Nominal)
– 3.3 Volts
• Microcontroller
• Sensors (SpO2,
temperature,
accelerometer)
Connected
to PC1/PC0
• Wi-Fi Module
– 5 Volts
• OLED
(I2C pin) on
Micro
+
Sensors
OLED
Micro
Schematic: Power Supply
Charger/Booster
Fuel Gauge
Headers
5V Step Up
Sensors: Pin Connections
•
Push Button – (Emergency)
• PA4 (GPIO)
•
Accelerometer (Analog)
•
•
PA0/PA1/PA2 (Analog)
Temperature (digital)
• SDA/SCL (I2C pin)
•
Pulse Oximeter
• PB2 (External Interrupt)
Receptor ( IC chip outputs FM
Voltage)
• PA5/PA6 (GPIO)
• Regular Red LED
• Infrared LED
Sensors: Schematic
Oximeter
Temperature
Accelerometer
Emergency
Push Button
Wi-Fi and OLED: Pin Connections
Wi-Fi Module
OLED
• UART (TXD0) PD1
• UART (TXD1) PD3
• UART (RXD0) PD0
• UART (RXD1) PD2
* Serial Communication
OLED
Micro
Wi-Fi