LLFY-Step by Step in DIALux With OSRAM LEDs

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Step by Step

Street Lighting Simulation

with OSRAM LEDs in DIALux

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Page 3 8 12 20

Agenda

• Introduction and Install of DIALux • Import IES files of OSRAM LEDs

• Quick Street Planning Wizard with DIALux

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Event / Title | December 17, 2008 | Page 3

SSL | Application Design Center Asia | V.Chen

What is special about DIALux?

• DIALux - a planning software for your project presentation. • Calculation: latest radiosity procedures, fast and always correct. • Results: Results can be printed out or transmitted as a pdf file. Each

view and each rendering can be saved as a .jpg file.

• Interactive 3-D visualization: Simply move around the room. • Visualization: Use of textures and furniture for realistic rendering. • Photo realism: with integrated raytracing module.

• False colours: False colours provide quantitative analysis of complex geometries at a glance.

• Movies: Walk through the photo realistic visualization of your light planning and send the film to your customer via email.

• Interaction: Import and export: .dwg and .dxf files can be imported and exported with results after completion of the planning process. • DIALux Light: Easy to use, step-by-step lighting design.

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Free Download DIALux from website

• Download the DIALux Setup (version DIALux 4.5.0.1 ) from homepage (www.DIAL.de or www.dialux.com) on your hard-disk.

• Language available – deutsch – english – français – italiano – español – 中文

• Download file size: about 250MB

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Online Update

• If you have already installed old version of DIALux, you could use “ online update” to newest version.

• In DIALux you will find a new menu named “Online”.

• After selecting “Online Update…” DIALux automatically checks for newer versions of the software and for new online PlugIns.

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The DIALux User Interface

• These three work areas enable effective and clearly arranged planning of lighting installation with DIALux.

CAD-Window Task Pane

Project manager with Inspector

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Page

Agenda

• Step by Step – Design with OSRAM LEDs in DIALux

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8

12

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.IES or .Idt files

• .IES or .Idt file describe the information of light distribution, luminous flux, and power.

• .IES or .Idt file are very small ( only about 10K) compared to ray data (about 200M).

• OSRAM OS provide both .IES (or .Idt) file and ray data of our LED products on website.

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Download .IES file of OSRAM LED from website

• http://www.ledlightforyou.com

• Tools & Downloads >> Optical Tools

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Page

Agenda

3 8 12 20

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Quick Street Planning Wizard

• you will find the wizards in the menu File >> Wizard

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Street profile and illumination class

• Street profile

• Street name and maintenance factor are likewise inserted on this page. • In the following window you can fix the individual or combined valuation

fields for the street. In order to define photometric requirements for the street, select an illumination class for every valuation field.

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Luminaire arrangement

• In the window Luminaire arrangement you can select a luminaire and place this in an arrangement. (You need to import the IES file of OSRAM LEDs first,

otherwise you can only select the existing traditional luminaire in DIALux)

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Start Calculation

• Afterwards a final dialogue will appear automatically. If you activate the checkbox, the generated street will be calculated immediately.

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Rotate 3D View

Rotate 3D View; left-click and move the mouse while holding the mouse button pressed.

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3D light distribution Display

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Show false colors in CAD

• Display the 3D rendering in a false colour rendering

• Easy to check the illuminance uniformity • Freely scaleable value ranges and definable

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Page

Agenda

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Street profile, width, N of lanes, coating…

Step 1: Collecting road information

Information list before design:

1. Street location and photos 2. Width of street

3. N of lanes

4. Coating material

5. Existing mounting height or pole distance?

Decide the road classification and required E_avand U_o according to street lighting standards

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Step 2: Edit street in DIALux

Arrangement of street component according to the road information.

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Step 3: Decide which LED

(color bin and brightness group)

• CCT: from 5000K-6500K (LW, LUW)

• If need CCT from 4000K-5000K, can be mixed by LUW and LY.

Golden DRAGON Plus Golden DRAGON

with Oval Lens

No need of secondary optical design

Need lens or reflector Higher brightness

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Step 4: Change luminous flux

You can change the luminous flux and power here. It’s related to how many LEDs in one lamp.

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Step 5: luminaire arrangement

0.4~0.5 W ≤ 6m N ≤2 Single row Figure 0.5~0.8 0.5~0.8 Uniformity W ≥ 16m N ≥4 W ≥ 8m N ≥2 Road information Double row, opposing Double row, with offset Lighting Class Normal methods of luminaire arrangement • Single row

• Double row, opposing • Double row, with offset

Luminaire arrangement will be decided based on • street profile

• requirements

• For LUW W5JM, Double row, opposing was

recommended.

!

Rules of thumb

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Step 6: Optimize arrangement parameters

• (1) Mounting Height: 6m~10m

• (2) Overhang: 1m~2m • (3) Boom Angle: 10°~15° • (4) Boom Length: 1m~3m • (5) Pole Distance

• These parameter will be optimized according to street profile to achieve best performance: E_av and U_o.

• If a certain Uo was required, the most economic mounting height and pole distance could be optimized.

• Lower distance, longer pole distance could save energy and pole cost.

Mounting Height Overhang Boom Angle Boom Length Lamp (5)Pole Distance

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Step 7: calculation and simulation

Not so uniform, need to be improved

Double row, opposing

0.36 0.52 24 8.6 17 E_min/E_max Uo E_max(lx) E_min(lx) E_av(lx)

Change to double row, offset

Optimized results E /E Uo E (lx) E (lx) E (lx) 1 2 3

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Step 9: output design plan

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Step 10: output simulation results

0.72 0.83 22 16 19 E_min/E_max Uo E_max(lx) E_min(lx) E_av(lx) Isolines (E) Table (E) Main results

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