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IEEE SoutheastCon 2007

IEEE SoutheastCon 2007. Team 2 Senior Design I Mid-Semester Review. Team Members. Evan Dozier. Jeff Fairley. Heather Hickman. Austin Walton. Advisors. Dr. J.W. Bruce. Dr. Bryan Jones. Overview. Competition Rules PING Subsystem Overview Technical Constraints Shooting Targeting

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IEEE SoutheastCon 2007

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  1. IEEE SoutheastCon 2007 Team 2 Senior Design I Mid-Semester Review

  2. Team Members Evan Dozier Jeff Fairley Heather Hickman Austin Walton Advisors Dr. J.W. Bruce Dr. Bryan Jones

  3. Overview • Competition Rules • PING Subsystem Overview • Technical Constraints • Shooting • Targeting • Power • Practical Constraints • Manufacturability • Sustainability • Project Timeline, Conclusion, Q & A

  4. Competition – Basics • Modified game of basketball • Double elimination tournament • 5 minute rounds • Divided court • Limited number of balls shared between both robots • WIN by shooting the most balls through the goal Ref: [1]

  5. Competition – Court Start Zone Ball Request Zone GOAL Goal Detail Rebound Zone Ref: [1]

  6. Subsystems Team 2

  7. Technical Constraints

  8. Targeting Requirements: • Locate the target • Track the target from up to 6’ Justification: • 100% shooting accuracy desired • 6’ is maximum distance from goal Approaches: • Fixed position • CMUcam2+

  9. Targeting – Fixed Position Assuming: • 10” elevation • 5’ x-distance • 13” y-distance • 0.1 lb ping-pong ball Launch: • 21 m/s at 12.2° 5’

  10. Targeting – CMUcam2+ Features: • Image processing logic • Servo controllers • Configuration GUI • Serial Interface Ref: [2]

  11. Targeting – CMUcam2+ Demo

  12. Shooting Requirements: • Launches a ping-pong ball at least 6’ with 100% accuracy shooting 30 balls in 5 minutes. Justification: • Maximum 6’ shooting distance • Accuracy is key to the competition • Must take as many shots as possible Approaches: • Vortex Fan • Linear Solenoid • Spinning Wheel

  13. Shooting – Vortex Fan • Shoots 2’-3’ • 500 mA at 12V Values from lab testing. Ball Entrance

  14. Shooting – Linear Solenoid Sun Magnet SMO-0837S Open Case Solenoid • Stroke: 6mm • Very quick response time Plunger moves back and forth Linear Solenoid Ref: [3]

  15. Shooting – Spinning Wheel • Launches 6’-8’ average. • Foam wheel = Max. contact • 5000 RPM at 6V • 600 mA at 6V Cutout for Wheel Values from lab testing and product data sheets

  16. Shooting – Spinning Wheel Ball Enters Here 1.5” PVC Barrel Direction of Rotation 3” Foam Wheel DC Motor

  17. Shooting – Spinning Wheel Demo

  18. Power Requirement: Battery able to support worst case robot operation for at least 10 minutes. Justification:Enable robot to compete for two rounds without recharging. Approach: PowerSonic PS-640 FP (2) Sealed Rechargeable Lead-Acid 6 Volts 4 Ampere Hours Ref: [4]

  19. Budgeting the Power Supply Worst Case Total 1710 mA Available Power 4 Amp Hours x 2= 48,000 mA/10 min. Values from product data sheets and lab testing. Ref: [2] [3] [4] [5] [6]

  20. Practical Design Constraints

  21. Manufacturability Requirement: • Simple design Justification: • Ease of development and repair Approach: • Modular components

  22. Sustainability Requirement: • Reliable source of power Justification: • Consistent performance Approach: • Powerful, rechargeable batteries

  23. Project Timeline Aug Sep Oct Nov Dec Targeting 20% Shooting 40% Integration Test/Debug

  24. Conclusion Shooting • Settled on spinning wheel method Targeting • Tests of CMU Cam indicate good match for application Power • Dual 6V, 4AH batteries provide sufficient power for onboard systems

  25. References [1] IEEE. (2006, Sept. 13). “Student Hardware Competition Rules,” IEEE SoutheastCon 2007 Student Program. [Online]. Available: http://www.southeastcon.org/2007/doc/SoutheastCon_2007_Hardware_Rules.pdf [2] C. Rosenburg. (2006, Sept. 27). “CMU Cam 2 Vision Sensor,” The CMU Cam 2. [Online]. Available: http://www.cs.cmu.edu/~CMUcam2/CMUcam2_manual.pdf [3] Jameco.(2006, Sept. 27). “Jameco Reliapro: 262271,” Jameco Electronics. [Online]. Available: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=262271 [4] Battery Web. (2006, Sept. 27). “PowerSonic PS-640 FP,” Battery Web. [Online] http://www.batteryweb.com/powersonicdetail.cfm?Model=PS-640%20FP&tbl=PowerSonicSLA2468 [5] Jameco.(2006, Sept. 27). “Jameco Reliapro: 161373,” Jameco Electronics. [Online]. Available: http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=161373 [6] Matrix Orbital. (2006, Sept. 27). “LK204-25 ,” Matrix Orbital. [Online]. Available: http://www.matrixorbital.com/product_info.php?pName=lk20425&cName=lcd-character-lcds Question & Answer

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