Description

Project completed by Joanna Krug, Brian Surber, Alex Willis, Timothy Yang

This project is a wearable skin temperature sensor that controls a fan/air conditioning unit. A fan will be used for demonstration purposes. Data on past and present skin temperatures and fan speeds will be sent to a website via Ethernet for the user to view. The device is worn on an armband, but can also be worn around other parts of the body if more comfortable. The temperature sensor reads in the user's skin temperature and adjusts the speed of the fan accordingly. The "comfortable temperature" is the temperature threshold where the fan turns on/off, and the speed of the fan is a function of how far above this temperature your skin is. The "comfortable temperature" can later be calibrated by the user.

On the transmitting end, a temperature is read in using an infrared sensor and the temperature is transmitted via the TX xBee. However, if a switch is switched on, the xBee is disabled. RTOS is used on the receiving end with multiple threads controlling the uLCD, Ethernet, xBee receiver, fan speed, and push buttons controlling the "comfortable temperature." PC printouts were used during the debugging of the program.

Video

Components

Wiring

TX

RX

Code

TX Code

RX Code