Project Details

This project consists of the designing and prototyping of a microprocessor system that can interface the following sensors:

-GPS Receiver
-Heart Rate Sensor
-Cadence Sensor
-FM Receiver
-Infrared Transmitter

The system should be battery operated, low cost, portable and small enough to allow a user to wear the device during activity without additional burden and able to be mounted on a bicycle handle when in cycling mode. The system must also have a LCD panel and some buttons to enable the user to interact with it. The system should also be low powered since it is driving on a battery source and should allow the coverage for a reasonable period of usage before a battery replacement is required. A wireless PC link and PC software would also be needed for the user to upload and display data from the controller.

The device should be based on a modular system, allowing for independent control of each sub-unit. This gives the user the flexibility to customize the device to suit the activity under monitor. For example, since this monitor can be used for both running and cycling, a mode selection would be available to enable the user to configure the monitor to running or cycling mode and it should have the option of disconnecting the cadence sensor when in running mode since cadence is only measured during cycling.

With the system designed to be modular, troubleshooting and maintenance can be carried out easily and only replacement of individual units are required when the system is faulty. Being modular also enables the user to turn off certain sensors to conserve power and allow monitoring of other features to continue.

The Block Diagram Below shows the functional flow of the overall design.