Sponsored by: The Martinson Foundation CIESE at Stevens Institute of Technology NJTEA Systems and...

Sponsored by:The Martinson FoundationCIESE at Stevens Institute of TechnologyNJTEA

Systems and Global EngineeringProjectSummer 2008S

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PLACE PHOTO OF FINAL

PROJECT HERE

Lighting Systems

team Members:

Design Team

Prototype Team

Mass Production Team



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Situation Page

In your teams own words what is the problem with which your team has been presented?

Why is it important to solve problems in a sustainable manner, which do not put a burden on the environment, or local infrastructure?

What must be done to solve this problem?



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Investigation & Research

How do Watt’s Law and Ohm’s Law relate to the project?

Why is this information essential in designing a solar LED lighting system?

Ohm’s Law:

I represents: Current,

measured in Amperes (Amps)

V represents: Volts,

The difference in energy between 2

points.

R represents: Impedance,

measured in Ohms Ω

I

V R

W

I E

Watt’s Law:

W represents: Watts

I represents: Current,

measured in Amperes (Amps)

E represents: Volts,

The difference in energy between 2

points.



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What is a cell; what is a battery, and what is the difference between the two? A cell is a device that chemically stores and produces voltage with

an electrode and electrolyte. A battery is a bank of 2 or more cells that work in unison to generate a greater voltage or amperage depending

on the arrangement of the battery

What are the symbols for both a cell and a battery in an circuit?

What is a resistor?

What is the symbol for a resistor in a circuit?

What is the definition of a diode?

What is the symbol for a diode in a circuit?

What does the Term LED stand For? Light Emitting Diode

What is the symbol for an LED in a circuit?

Why is it essential to understand the operation of individual components in designing a solar LED lighting system?



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What is a photo voltaic cell? How does solar power produce electrical current?What is a capacitor and how does it function?How does a capacitor store energy?

How can a solar panel charge a rechargeable battery?

What power supply is more advantageous to your team? (a capacitor / a battery)why?

Why is the information on solar cells essential to design a solar LED lighting system?



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What is a photon?

What happens when a photon hits a photovoltaic cell?

What role does the semi conductive material play in a photovoltaic cells ability to generate electricity?

Trace the flow of energy through the diagram below.



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What is a series circuit; what is a parallel circuit, and what is the difference between the two?

How does a series circuit effect voltage and amperage?

How does a Parallel circuit effect voltage and amperage?

Draw a simple LED circuit with a switch, a battery, a resistor and 2 LEDs, in series and parallel.

Series Parallel

Which type of circuit will produce a more consistent light output over the two LEDs?Why?



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Develop a circuit that uses a solar panel to charge either a battery, or a bank of capacitors, multiple LEDs and a switch that controls the LEDs with the proper resistance.

How can the directional light output of the total system be increased with out adding LEDs, or adjusting the power of the system?



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What are the 6 principles of Creative & Effective Logo Design?

What are the 5 principles of graphic design?



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Describe an Orthographic Drawing.

Describe an Isometric Drawing.

What is the fixed axis of an isometric drawing?

What is the difference between an isometric drawing and an orthographic drawing?

Which type of drawing is also referred to as a three view drawing?Which type of drawing is a single 3-dimentional representation of an object?

What are the measurements on a drawing called?



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DESIGN HERE

Lighting Systems

team Members:

Design Team



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Specifications & Limitations

Decide on specific limitations and requirements for the design that may not have been addressed in the initial handouts.



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Generate Possible Solutions

The 3 primary types of electrical lighting devices are incandescent bulbs, fluorescent bulbs, and LED based lighting. For each of these, describe how they work, and the inherent benefits and drawbacks.

Incandescent bulbs:

Benefits Drawbacks

Fluorescent bulbs:

Benefits Drawbacks

LED based Lighting:

Benefits Drawbacks

Which form of lighting has the longest life, and lowest power use?



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Generate Possible Solutions for the HousingPrototype Team

• Use electrical components provided • Develop a working electrical circuit controlled by a switch• That is always able to charge via the solar panel. • Document the design process

Circuit # 1 Operational Notes

Pros Cons

Circuit # 1 schematic:



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Pros Cons




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Choose the Best SolutionPrototyping Team• Examine the operation of each circuit• Establish pros and cons for each circuit• Select the best solution or:• Redesign the circuit as needed• Document the redesign process• Generate a final schematic drawing.

Explain the rational for choosing the final design:

Post your schematic & rational for the design



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Generate Possible Solutions for the housingDesign Team

• generate 3 possible design ideas• generate a list of benefits and draw backs to that design• attach the designs the documentation packet.

Design # 1 Pros Cons

Design # 1 Drawing:



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Design # 2 Drawing:



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Design # 3 Drawing:



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Select the Best Solution

Design Team• Examine the benefits and drawbacks of each design• Choose the best solution or:• Combine multiple designs into one• Generate a final working drawing


Post your design & rational for the design



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Generate Possible Solutions for the housing

Manufacturing team• Generate 3 possible design ideas• Create a list of pros and Cons• Attach the designs to the documentation packet.


Design # 1 Drawing:



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Design # 2 Drawing:



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Design # 3 Drawing:



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Manufacturing Team• Examine the benefits and drawbacks of each design• Choose the best solution or:• Combine multiple designs into one• Generate a final working drawing


Post your design & rational for the design



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Manufacturing Team

Your team will examine and critique the design put forth by the Design Team and redesign or modify the design as necessary to make improvements. Every modification that is made should be documented, and rational should be given for the changes. Then your team will generate a good final working Drawing.

Explain the rational for any and all changes that your team found necessary:

Post your design changes & rational for the design changes



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Design Team

Your team will examine and critique the design put forth by the Manufacture Team and redesign or modify the design as necessary to make improvements. Every modification that is made should be documented, and rational should be given for the changes. Then your team will generate a good final working Drawing.


Post your design changes & rational for the design changes



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Manufacture Team

Your team will examine the critiques and design changes made put forth by the Design Team and redesign or modify your design as necessary to make improvements. Every modification that is made should be documented, and rational should be given for the changes. Then your team will generate a good final working Drawing.


Post your design changes & rational for the design changes and your final drawing for consideration and selection by the teams



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Design Team

Your team will examine the critiques and design changes made put forth by the Manufacture Team and redesign or modify your design as necessary to make improvements. Every modification that is made should be documented, and rational should be given for the changes. Then your team will generate a good final working Drawing.


Post your design changes & rational for the design changes and your final drawing for consideration and selection by the teams



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Collaboration:Each group must select the best Housing Design and provide rational.

Design team has chosen housing design Rational:





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PROTOTYPE HERE

Lighting Systems

team Members:

Prototype Team



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Prototype Development Work

Explain any and all changes that occurred in the generation of the Prototype.

Change:

Why did the change occur?

Was the change beneficial?

Change:



Change:





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Prototype TestingTest the prototype for function in terms of lighting.

How does the prototype function in terms of a light source?

How can the light output of the prototype be improved?

How long do the LEDs function after the prototype is fully charged?

What improvements can be made?

How long does the solar panel take to charge the light?

How durable and user friendly is the prototype?



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Final Design Modifications

What flaws need to be addressed in redesigning the prototype?

How will these flaws be addressed?

Generate a new set of working drawings that corrects and addresses any design flaws inherent in the prototype.



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Lighting Systems

team Members:

Mass Production Team


PROJECT HERE



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Jigs and FixturesAttach a picture of any jigs or fixtures created, and describe its purpose, and

function. Also identify any quality concerns or safety considerations addressed. (make additional copies for each jig or fixture made.)

PLACE PHOTO OF JIG OR

FIXTURE HERE



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Describe Mass ProductionHow was quality control addressed throughout production?

How was safety addressed through out production?

What other considerations had to be taken in planning the production run and in carrying it out?

Sponsored by: The Martinson Foundation CIESE at Stevens Institute of Technology NJTEA Systems and...

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