Train Locomotive Emergency Lighting System by hcj

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									Team Juxtaposition 3 (The Original)

             Ben Campbell
             Donald Moeslein
             Matt O’Hara
             Serkan Silahdaroglu

                   April 29th , 2008
Design Activities
1. Customer Needs Assessment
2. External Search
3. Concept Generation
4. Morphological Chart
5. Pugh Charts
6. Triz
7. Final Design
Project Management
          Order of Tasks to be Completed
1.   Lighting Type
2.   Type of Battery
3.   Location of Battery Within Cabin
4.   Location of Lights Within Cabin
5.   Casing to Protect Battery
6.   Wireless Capabilities
7.   Design Meets All Necessary Requirements
Weighted Hierarchal Customer
Needs List
   1.0 Durability (.225)
                1.1 Lights withstand crash and weight of people
                1.2 Battery withstands crash
   2.0 Brightness (.205)
               2.1 .5 LUX in General
               2.2 2.5 LUX on Stairs
   3.0 Visibility (.177)
               3.1 Lights are easily distinguished
               3.2 Doors and stairs are visibly lit
   4.0 Time Requirement (.142)
               4.1 Emergency lights remain lit for a minimum of 20 minutes
               4.2 Lights can be manually shut off at any time
   5.0 Power Source Accessibility (.125)
               5.1 Battery can withstand a crash
               5.2 Battery is incased in a protective area
               5.3 Easily accessible
               5.5 In close proximity to cabin to be wired to lighting system
   6.0 Battery Source (.069)
               6.1 Wirelessly connected to train’s main battery source
               6.2 Wired to backup battery
               6.3 Enough energy to sustain appropriate LUX requirement for necessary amount of time
   7.0 Cost (.041)
               7.1 Lowest Possible Cost
   8.0 Visual Appeal (.017)
               8.1 Color indicates an emergency path
Revised Problem Statement
 After researching the problem, we came to the
 conclusion that there were three main problems
 we had to solve. We had to decide on a power
 source that would be able to provide the lighting
 system with enough power to meet the
 requirements, where the power source would be
 located so it would not be damaged in the event of
 a crash, and which type of lighting would be best
 to illuminate the area to the specifications of GE.
EMS Model
                                             EMS MODEL
                                 Emergency Brake Pulled               Manual shut off:
                                 The emergency                        Button/lever – the lights
 Signal                          lights activated.                    are off.


                                 Conversion of the energy in the      Energy coming from
                                 battery to light - Illumination of   the battery is blocked -
           Chemical energy       the                                  Emergency lights are
Energy     stored in battery.    cabin interior.                      off.




           Chemicals stored in
Material   Battery
Concepts Generated for Power Supply

             Battery




                        Gas Powered




     Solar               Generator
Concepts Generated for Lighting Types




Photo luminescent
                         LED      Fiber Optics




  Incandescent      Fluorescent
                                  Halogen Bulbs
Generated Concepts for Location of Power Supply



               Nose of
               Cabin


                                     Underneath Elevated
                                     Area of Cabin




                         Ceiling of Cabin
Generated Concepts for Housing
        Power Supply
  Steel



                      Aluminum




           Plastics
Generated Concepts with TRIZ
 Power Supply – Complexity of Device vs.
 Manufacturability

 Power Supply Casing – Harmful factors acting on
 vs. reparability

 Lighting Type – Brightness vs. Energy expended

 Power Supply Casing – Durability of object vs.
 Volume
         Morphological Chart
Power Source   Power          Source Lighting Type
               Location
Battery-       Ceiling-                LED




Solar-         Nose-                   Fiber optics




               Under the right elevated Incandescent
               area-
Concept Selection (Power Source)
Power source
1. Battery
2. Solar


                   Durability       Cost        Time Requirement       Total            Rank
                         0.225       0.041                  0.142
Instance 1     1                0          0                       0               0           1
               2            -1             1                   -1              -0.326          2


Instance 2     1                1          -1                      1           0.326           1
               2                0          0                       0               0           2



 •Choices for the power source, solar panels and a battery.

 •The battery was the best choice because it would have less
 damage during a crash, cost less and would be able to
 supply a constant source of power no matter the weather
 unlike a solar panel.
Concept Selection (Battery Location)
Battery Location
    1. Ceiling
     2. Nose
 3. Under Seat

                       Durability   Cost    Accessibility   Total    Rank
                         0.225      0.041      0.125
                   1       0          0           0            0      2
   Instance 1      2       -1         1          -1         -0.309    3
                   3       1          1          -1          0.141    1

                   1       1         -1           1         0.309     1
   Instance 2      2       0         0            0           0       3
                   3       1         1           -1         0.141     2

                   1       -1        1           1          -0.059    2

•Choices: Ceiling, Nose, and Underneath the Elevated Area of Cabin

•Underneath the raised seat would not be as easily accessible but
because of the harder accessibility would provide more protection for
the power source and is the best choice.
Concept Selection (Lighting Type)
  Lighting Type
       1. LED
  2. Fiber optics
 3. Incandescent

                        Durability   Brightness   Visibility   Cost    Visual Appeal   Total    Rank
                          0.225        0.205       0.177       0.041       0.017
                    1        0            0           0           0          0            0      1
   Instance 1       2        1           -1           -1         -1          -1        -0.215    3
                    3       -1            1           -1          1          -1        -0.173    2

                    1      -1            1            1          1          1          0.215     1
   Instance 2       2       0            0            0          0          0            0       3
                    3      -1            1            1         -1          1          0.133     2

                    1       1            -1          -1         -1          1          -0.181    2
   Instance 3       2       1            -1          -1         -1          1          -0.181    2
                    3       0             0          0           0          0             0      1

 •The three options for the type of lighting are LED’s, fiber optics, and
 incandescent bulbs.
 •LED’s were the best choice because they will be able to provide the
 required lighting, cost less, and are more durable.
      Bill of Materials with Cost

Qty            Description            Stock Number         Vendor       Total Cost

        20 GA Cold Rolled Steel
 6     Sheet; .036 thick; 1ft x 1ft        S120          Metals Depot    $74.82

       LED Under Cabinet Lighting
 6          (2" x 12" x .75")               L24            C.Crane       $479.7
 1           12 Volt Battery              23-275         Radio Shack     $34.99
 1     All of the wireless products         N/A            Airlines       $500
 1           Misc Materials                                               $100
                                       (20% cost cut
                                      on lights b/c of
               Total Cost             buying in bulk)                   $1093.57
         CAD Drawing for Final Design




LED STRIP (12 in)                            EXIT lights




                    12 Volt Battery Supply
CAD Drawing for Final Design



                 Left View

Top View
CAD Drawing for Final Design




 Red Dots = LED strips   Green Dots = Wireless Lights
                    Calculations
Power Calculation
110 lumens x (1watt/660 lumens) x 6 devices = 1 watt
110 lumens / 9.29 m2 = 11.8 LUX
Total Cost = $1093.57



We feel this cost is reasonable because the majority of
 our cost comes from the LED lighting but we feel that
 the cost needs to be compromised for the overall
 durability of the design.
Concluding Remarks
 1) The LED lights throughout the cabin provide sufficient
  illumination, to allow for safe egress from the locomotive
  cab in the event of a collision.
 2) Emergency interior lighting will be linked to the
  emergency brake and be able to operate for well over the
  minimum of 20 minutes, also illumination of our system
  reaches 12.2 LUX which is well over the minimum.
 3) Emergency interior lighting will operate in all
  equipment orientations.
 4) The emergency lighting battery power source will
  provide for a manual reset to extinguish emergency interior
  lighting.

								
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