Service électrique : Étude d'éclairage

Question

Je travaille pour un petit service électrique municipal dans le nord de l'État de New York. Le service a récemment commencé à éliminer progressivement les anciens lampadaires HPS au profit de nouveaux luminaires LED. Avant le développement de nos cartes du service, qui ont moins d'un an, le service engageait une entreprise externe pour réaliser une étude d'éclairage sur les zones concernées. Maintenant que nous disposons d'une carte fonctionnelle du service, il serait pratique de l'utiliser pour effectuer une étude d'éclairage en interne. Quelqu'un a-t-il de l'expérience avec l'utilisation d'ArcGIS de cette manière ?

La principale chose que je voudrais faire est de trouver un moyen de tracer des profils d'isoline de luminaires sur notre carte. Ainsi, nous pourrions voir si le bras du lampadaire doit être ajusté ou remplacé.

De plus, j'ai examiné plusieurs logiciels d'éclairage différents, tels que AGI32 et DIALux, qui semblent utiles. Cependant, le processus de conversion des sections de notre carte en CAD puis leur importation et ajustement dans ces programmes est assez lourd.

J'espère que quelqu'un avec plus d'expérience pourra me donner une recommandation.

LongDinh · Answer

If you looking to generate light intensity, it would be best to use a raster data type.

The isoline profile generator should be able to generate raster cell values at a given x,y location and distance from the x,y location. Hopefully there's a relationship between height, orientation and bulb type which determines the light intensity.

Once you have all streetlights mapped and profiled, you can do a cumulative sum of overlapping cells with a threshold of 100 (for 100%) or have an IF raster condition to determine if it is intense or not e.g. >30% intensity is a pass for coverage otherwise, not intense enough.

So it's certainly possible!

VillageOf_Lake_Placid · Answer

That would be a fantastic idea. Currently the major issue is that we only have photometric files for each light type, so we need to convert each one into an isoline profile. However, the current process for getting these profiles is kind of a pain. We open the photometric files in AGI32, convert it to Cad, then convert it again into ArcGIS Pro. There has to be a better way to get a photometric file to create a usable isoline for Arcgis Pro.

Once we get this working I think your suggestion to determine the coverage is a great idea. I will have to give it a try.

It is an interesting predicament, it might be that we are asking for to much. The few examples of utilities and cities that use Arcgis to display light coverage and intensity have all used a simple buffer. Not taking into account the actual distribution of the light.

LongDinh · Answer

This really fascinates me. To preface, I have no experience with lighting software or technicalities but I can share a potential solution in the ArcGIS environment to help you understand lighting areas.

Given you have a luminaire isoline profile for each streetlight type (by bulb type?), and the height and orientation of the streetlight, you could write a Python script to generate/draw the luminaire isoline profile at each of the streetlight x,y locations.

Maybe your reporting statistic is % coverage of a road network which for a given road network, you could CLIP by the isoline profiles and get the difference in SHAPE lengths of the road network to determine the % coverage.

Anyways, I'm just throwing ideas around to an interesting problem.