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Team 8 : Batteries Not Included. Dave Dickinsheets Matt Scholten David Qu Knoa Knapper. Presentation Outline. Project Re-introduction Design Process Major Obstacles Major Accomplishments Next Steps. Project Re-Introduction. Battery-free Tire Pressure Monitoring System. Design Process.
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Team 8 : Batteries Not Included Dave Dickinsheets Matt Scholten David Qu Knoa Knapper
Presentation Outline • Project Re-introduction • Design Process • Major Obstacles • Major Accomplishments • Next Steps
Project Re-Introduction Battery-free Tire Pressure Monitoring System
Design Process • Utilized feasibility calculations/physics resources • Number of wraps on coil • Coil diameter • Magnet Orientation • Tested theories on test apparatus • Adjusted design accordingly
Major Obstacles • Magnet Orientation • Proper orientation gives higher voltage • Proper orientation reduces the number of magnets necessary • Coil Design/Manufacturing • Compact coils • Working coils • Mounting
Major Accomplishments • Working test apparatus
Major Accomplishments • Magnet Mounting Bracket Design Magnet Threaded Height Adjustment Caliper Caliper Mounting Holes
3 Volts at ~25 mph 4.5 Volts at ~42 mph 6 Volts at ~60 mph 7.5 Volts at ~75 mph All voltages are half wave heights All speeds are simulated on test apparatus without a tire mounted Major Accomplishments • Voltage Generation Readings taken at 5 V/division on Y-axis 5 ms/division on X-axis
Major Accomplishments • Circuit Design Tested • Half Wave Rectifier • Requires Voltage Regulator • Magnet Orientation • Coil Design Improved • Purchased TPMS System • Budget Under Control
Next Steps • Refine magnet and coil size • Refine circuit design • Mounting design for coil and circuit • Magnet bracket construction • Develop TPMS testing method