In and Out Line Monitoring System for Volleyball by Kelley White
Develop a system to determine if a volleyball lands on the line, ensuring fair play. The project involves sensors, a microprocessor, and LED indicators for accurate ball contact detection. Testing phases include electrical engineering labs and on-court trials with the Union College Volleyball team. Scheduled tasks include testing, ordering parts, detailed design descriptions, and algorithm development towards the final project completion.
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Presentation Transcript
In and Out Line Monitoring System for Volleyball Kelley White Advisor: Professor Buma
What problem will this project solve? Goals?: A line judge determines if a ball lands in or outside the court There is a need to ensure good calls and a fair game for players and coaches Develop a system that can determine if a ball lands on the line
Specifications: The prototype will be a 6 foot portion of the end line Battery powered and rechargeable (able to last a 10 hour tournament day) Green light indicating ball contact Simple installation with overlying tape over existing line
Block Diagram microcontroller Input from sensor Indicator (LED)
Design: Sensors 9 force sensitive resistors (FSR s) Connected to microprocessor with thin wire
Design: Microprocessor Arduino- receives voltage signal from one or multiple of the FSR s Output LED light at Arduino for ball contact and no light for foot contact
Testing Initial testing with the force plate in Butterfield Testing with FSR s in electrical engineering labs Final testing on court with Union College Volleyball team
Project Schedule: Fall term: - Testing with FSR s and adjust design if necessary - Finalize and order all parts - Detailed design description - Update web page - Final design report Winter Term: - Algorithm development - Continued development with further testing - Final project complete with desired testing outcomes - Final project report
Appendix Budget:
Thickness: Basic scotch tape: 0.058 mm Wires: 0.2546 mm FSR s: 0.40 mm Max total thickness: 0.40+0.058= 0.458 mm *will be negligible to players
FSRs .5 diameter $6.95 1.75x1.5 $7.95 .16 diameter $5.95
Arduino MEGA 2560: 1. Pins: Need at least 11 input pins (9 with room) there are 16 input pins 2. Memory rate: Unneeded. Processing real time data to make the output decision. Not storing any outputs/inputs. 256KB 3. Sampling rate: 10 samples a second worked well for differentiating force, but 50 samples a second would ensure accuracy 16MHz 4. Battery life will need to be chosen after testing with the FSR s and computing the maximum power dissipation in the lab Analog/digital MUX - 9 input sensors for only 6 feet & need a way to look at all sensors if the project is expanded to the whole perimeter
