NEIL MUNROE, GIFF MEZEY, TIM JAFFE, IAN BUBB

Improved Velocity Measurement Device

Table of Contents

1. Description of the Design Task2. Design Process3. Design Assessment4. Prototype/Model5. Engineering Analysis6. Summary and Conclusions

Problem Statement

The nominal speed of the rollers may not be accurate enough. For maximum control the actual speed of the paper must be known.

Design Task

Design Task

Mission StatementCreate a device that can measure the actual

velocity of the paper in the printer Minimize cost Maximize sustainability

Design Task

Customer Needs AssessmentInterview of iGen4 consultantHighest possible quality of pictureConsistent qualityHigh speed printing

Design Task

Design SpecificationsMeasurement of actual speed of the

paperDetection of an 8.5” x 11” sheet of paperMoving at a velocity of 250 to 750 mm/sMeasure within a tolerance of .25%System cannot impact speed of the sheetMinimize cost

Design Process

Concept GenerationVelocity measurement Devices

Lever Wheel Laser

Design Process

Lever Velocity Measurement Device

Design Process

Wheel Velocity Measurement Device

Design Process

Laser Velocity Measurement Device

Δx

V=Δx/Δt

Design Process

Screening Matrix

Lasers Wheels Levers

Cost - + +

Ease of Production

0 + +

Accuracy + - -

Sustainability

+ 0 0

Total: 1 1 1

Design Process

Weight Lasers Wheel LeversCost 14% 1 4 5

Ease of Production

7% 3 5 4

Accuracy 70% 4 2 2

Sustainability

9% 4 3 3

Total: 100% 3.51 2.58 2.65

Weighted Matrix

Design Process

Best Design: Laser Velocity Measurement DeviceAccurateDoes not affect paper speedCost effectiveMeets all requirementsFalls within constraints

Prototype

CAD rendering

Prototype

CAD Animation

Engineering Analysis

Cost: Varies with number of sensors Cost estimates: $1000-3000 plus installation

Cost varies with size and accuracy All accuracy within .2%

Ease of use and installationReliabilitySustainability

Summary and Conclusion

Through detailed research, we concluded the laser velocity system was the most cost effective method that fell within the constraints.

Questions?