A Wearable Power Generator for Sports Monitoring Applications by Ursula Leonard th Sports and Exercise Engineering Final Year Project Supervisor: Dr. Maeve Duffy

Introduction Background Aims Progress to date Tasks Remaining ◦   Power

Background and Aims Electromagnetic Induction ▫emf rate of change of magnetic flux Produce max AC Output Convert to useable DC Develop pedometer system Possible Applications ▫Pedometer 1.5v – 2.5v ▫Accelerometer 2v – 3.4v

Optimisation of Dimensions The Generator ▫Length, diameter The Copper Coil ▫Length of coil ▫Number of coils ▫Diameter of wire The Magnet ▫Gradient ▫Shape, length, diameter

Building and Testing Card Former One coil Generator length 50mm Magnet diameter 10mm Magnet grade and length Wire diameter No. of turns of wire No. of coils  Constant  Variable

AC/DC Conversion Analysed conversion circuits ▫Half wave rectifier ▫Full wave rectifier ▫Multiplier circuits Downloaded simulation software ▫Predict results Analysed types of diodes ▫Silicon ▫Germanium ▫Schottky  Very low forward voltage drop

Tasks Remaining Build conversion circuit Get hand on transceivers Become familiar with programming language Write program Program up LCD display Accelerometer Display speed with steps taken

Conclusion Happy with progress to date A lot of work ahead Lighter Semester Thank you for your time Any Questions?