Ping Project Justin Knowles Kurt Lorhammer Brian Smith Andrew Tank ECEN 4610

Ping Project Objectives Complete analysis of putter stroke – Velocity – Force – Trajectory – 3-D motion – Impact location – Club angles – Stand Alone Unit Clips onto putter

Ping Inc. Specifications Angle Measurements: – Driver max angle = 540  – Putter max angle = 100  –  - required –  - desired Speed Measurements: – Driver Max Velocity = 150 mph – Putter Max Velocity = 20 mph – mph - required – mph - desired Swing Weight Center of Balance: – 14” from top of shaft Communication: – Wireless: B Club Weight: – Putter Head Weight = 350 grams – Driver Head Weight = 250 grams Device Weight: – < 10% of head weight

Marketability Ping Inc. – Will use this technology to customize clubs to meet individual needs Compensation for swings Weight – Clip On Easy to use, can be used with any club Natural enviroment provides best results Less than $3000 makes it affordable to the avid golfer

Current Progress Determined photo sensors for impact location – IR Reflection Sensors Obtained 3-D positioning system 3DM-G – Combonation of Accelerometers and Gyroscopes positions in 3-D Initial prototype testing – Voltage Curves for IR – Positioning of 3DM-G

Initial Design

Communication System We plan on designing and implementing a wireless communication system to replace the cable link between the 3DM-G and the computer.

Data-Flow Diagram Computer 3DM-GBufferTransmitter Receiver

3DM-G Contains: – Accelerometers (3) – Gyroscopes (3) – Processor Power – 5.2Vdc min – 12Vdc max – 52mA current Outputs: – RS-232 interface – 100Hz data rate – Acceleration vectors – Angles

Buffer Flash Memory – Used to store the data from the 3DM-G so that the data can be sent at a slower rate across the transmission channel. Processor – Interface Control between 3DM-G, Buffer, and Transmitter

Transmission Link RF Transmitter/Receiver – Prefabricated Unit – Serial Port compatible Frequency and Data Rates – Typically small for small units Data must be stored and sent out at this slower rate

Power Requirements Small Power – Portable clip on system must be light Small batteries should be used Parts used should be light, low power units Longevity – Must last a round of golf On/Off switch to conserve power Possible stand-by modes

Projected Problems Size and Weight constraints – Hard to design to not interfere with putter weight and feel Data Rates – Synchronization between components Education – Digital Signal Processing is a weakness for our group Communications between departments – ME/Ping may change design specifications Specifically, 3DM-G box may not be used in final project

Contingencies Data Rate – Once designed, changing the input (3DM-G) should have little consequence to overall outputs Size and Weight – Prototype needs to be a proof of concept, and most components can be manufactured more compact DSP – Use more knowledgeable resources

Schedule

Estimated Costs Development Costs (per unit) – Parts: $2k – Labor: Students pay to work: ($8k) Retail Costs – Parts: $1.5k – Manufacturing and Marketing: $500 – Suggested Retail Price Per Unit: $3.5k

Questions? Comments?