電力事業者：照明調査

Question

私はニューヨーク州北部の小さな自治体の電力事業者で働いています。当事業者は最近、古いHPS街路灯を新しいLED器具に段階的に置き換え始めました。現在1年未満の当事業者の地図が開発される前は、外部の会社を雇って問題のある地域の照明調査を行ってもらっていました。現在、機能するユーティリティマップがあるので、それを使って社内で照明調査を行うことが便利になるでしょう。ArcGISをこのように使用した経験がある方はいらっしゃいますか？

私が主にやりたいことは、地図上に照明器具の等光線プロファイルをプロットする方法を見つけることです。そうすれば、街路灯のアームを調整または交換する必要があるかどうかがわかります。

さらに、AGI32やDIALuxなどのいくつかの異なる照明ソフトウェアプログラムを検討しましたが、それらは有用に思えます。しかし、地図の一部をCADに変換し、それらのプログラムにインポートして調整するプロセスはかなり負担が大きいです。

より経験豊富な方からのおすすめを期待しています。

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.