Concepts of Planning & Designing Tahiem Williams Science Undergraduate Laboratory Internship August 14, 2008

Overview  Objective  Introduction  Background Information  Procedure  Data/Observation  Results  Conclusion  Acknowledgements

Objective  30ft Ladder Evaluation Relocate 6 inches from the wall 12” Steel Rod

Objective  Surveillance Camera Design  Brainstorm ideas for Radio Frequency (RF) Distribution Structure

Introduction  The Phases of Design Recognition of need Definition of problem Synthesis Analysis and optimization Evaluation Presentation  Oral  Writing  Graphical

Background Information  Ladder Evaluation Weight Density of Steel:

Background Information Cont.  Shear Stress – stress applied parallel to the face of a material  - the applied force  - area to which the force is applied  Moment of Inertia – rotational analog of mass  - the diameter

Background Information Cont.  Maximum Deflection  - the elasticity of the material  - the length  Bending Stress  - the moment of fixed ends  - the perpendicular distance to the neutral axis

Procedure  Surveillance Camera Design Excel Spreadsheet  Presented to others Installation  Radio Frequency Structure Aluminum Sheets  Measured sections of RF  Drew Sketches Sent to machine shop  Installed

Data/Observations Surveillance Camera Price SNC-RZ30N $1, SNC-RX550N(Japan) $1, Vivotek PZ6112 $ VC-CA-IPPZ6114 $ Samsung SPD-2300N $ $590 w/ keyboard Dimensions(W x H x D)Image Size (H x V) 5.625in x 7in x 5.75inN/A 6.375in x 6.375in x 9.125in640 x 480, 320 x 240, 160 x 120 (JPEG, MPEG-4, H.264) 4.1in x 4.1in x 4.9inN/A 4.13in x 4.48in x 4.13inN/A Ø155(W) x 243.4(H)mm811 x 508  Surveillance Camera Design Pan Angle/Pan SpeedTilt Angle/Tilt SpeedNumber of pixelsZoom Ratio -170° to +170° /2 sec. per 340°-90° to +25°/1.5 sec. per 115°6.8 x10^525x optical zoom, 300x w/ digital zoom 360° endless motion/360° per sec.(max.)90° to 0°/300° per sec.(max.)3.8x10^5(768 x 494)26x optical zoom, 312x w/ digital zoom ±135°/ 10° to 50° per sec.+90° to -45°/ 7° to 25° per sec.2.7x 10^510x optical zoom, 10x w/ digital zoom ±135°/ 10° to 50° per sec.+90° to -45°/ 7° to 25° per sec.2.7x 10^510x optical zoom, 10x w/ digital zoom 360° endless/240° per sec-4° to 184°/240° per sec4.1x 10^523x optical zoom, 230x w/ digital zoom

Results  Ladder Evaluation

Results  Surveillance Camera Design End Station A  Ethernet Crossover Cord Same function as Straight-through Ethernet Cord

Results  Radio Frequency Distribution Structure Aluminum Sheets

Conclusion  Ladder Evaluation Ultimate Stress of Steel:  L – Brackets were installed to relieve stress L-Bracket

Conclusion  Surveillance Camera End Station A

Conclusion  Radio Frequency Structure

Acknowledgements  Department of Energy, Office of Science  Science Undergraduate Laboratory Internship Stephen Rock Farah Rahbar Susan Schultz  Stanford Linear Accelerator Center Mentor: Bobby McKee

References  Joseph E. Shigley, Mechanical Engineering Design, Second ed., St. Louis: McGraw-Hill Book Company,  A. Johnson and K.Sherwin, Foundations of Mechanical Engineering, First ed., Oxford: Alden Press,  lamswww.epfl.ch/.../bpmds08/processlifecy cle.jpg