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:

steelladderVW

3283.0

in

lb

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

A

F

A

F

64

4d

d

Background Information Cont. Maximum Deflection

- the elasticity of the material

- the length

Bending Stress

- the moment of fixed ends - the perpendicular

distance to theneutral axis

EI

FLy

192

3

max

E

L

I

My

M

y

I

d

L

Pab

22

2

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   $1,158.00

SNC-RX550N(Japan)   $1,749.00

Vivotek PZ6112   $552.99

VC-CA-IPPZ6114   $580.00

Samsung SPD-2300N   $974.00

+ $590 w/ keyboard

Dimensions(W x H x D) Image Size (H x V)

   

5.625in x 7in x 5.75in N/A

6.375in x 6.375in x 9.125in 640 x 480, 320 x 240, 160 x 120 (JPEG, MPEG-4, H.264)

4.1in x 4.1in x 4.9in N/A

4.13in x 4.48in x 4.13in N/A

Ø155(W) x 243.4(H)mm 811 x 508

Surveillance Camera Design

Pan Angle/Pan Speed Tilt Angle/Tilt Speed Number of pixels Zoom Ratio

       

-170° to +170° /2 sec. per 340° -90° to +25°/1.5 sec. per 115° 6.8 x10^5 25x 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 10^5 10x optical zoom, 10x w/ digital zoom

±135°/ 10° to 50° per sec. +90° to -45°/ 7° to 25° per sec. 2.7x 10^5 10x optical zoom, 10x w/ digital zoom

360° endless/240° per sec -4° to 184°/240° per sec 4.1x 10^5 23x optical zoom, 230x w/ digital zoom

Results Ladder Evaluation

lbsin

lbxinxVW 685283.013.2420

33

222509

25.0

100in

lbin

lbs

r

F

A

F

4344

1007.364

5.0

64inx

indI

in

inxpsix

inlbs

EI

FLy 01.0

)1007.3(1030192

12100

192 436

33

max

2343

2

2

2

2

2

2

10241007.3

2

5.0

12

661002

2

2

2in

lbsxinx

in

in

ininlb

I

d

L

abF

I

d

L

Pab

I

My

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

psix 31058

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, 1963.

A. Johnson and K.Sherwin, Foundations of Mechanical Engineering, First ed. , Oxford: Alden Press, 1996.

lamswww.epfl.ch/.../bpmds08/processlifecycle.jpg