BE1016862A6 - Road surface`s reflection characteristics measuring apparatus for calculating desired luminance performances of lighting installation, has light sources with optical systems positioned along respective incidence angles for lighting surface - Google Patents
Road surface`s reflection characteristics measuring apparatus for calculating desired luminance performances of lighting installation, has light sources with optical systems positioned along respective incidence angles for lighting surface Download PDFInfo
- Publication number
- BE1016862A6 BE1016862A6 BE2005/0575A BE200500575A BE1016862A6 BE 1016862 A6 BE1016862 A6 BE 1016862A6 BE 2005/0575 A BE2005/0575 A BE 2005/0575A BE 200500575 A BE200500575 A BE 200500575A BE 1016862 A6 BE1016862 A6 BE 1016862A6
- Authority
- BE
- Belgium
- Prior art keywords
- lighting
- performances
- site
- road surface
- optical systems
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/57—Measuring gloss
- G01N2021/575—Photogoniometering
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/02—Mechanical
- G01N2201/022—Casings
- G01N2201/0221—Portable; cableless; compact; hand-held
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The apparatus has light sources equipped with optical systems positioned along respective incidence angles so as to light a circular surface at the level of ground. A set of photovoltaic cells has support tubes for measuring reflected light, where each cell is oriented along a different angle with respect to the surface to be measured. Each light source has an additional photovoltaic cell for self-calibrating the light source. Independent claims are also included for the following: (1) a method for characterizing reflection properties of a surface for calculating desired luminance performances of a lighting installation (2) a computer-assisted analysis method for comparative analysis of reflection characteristics of a road surface.
Description
Méthode pour déterminer la luminance d'une surface
L'invention a pour objet de fournir une méthode pour déduire des propriétés de luminance d'une surface (appelées collectivement la "table-r" représentative de la surface), et plus particulièrement les propriétés de luminance d'un revêtement routier, à partir de la mesure, sur site, pour certains angles d'incidence et de réflexion, du facteur réduit de luminance de la surface / du revêtement routier.
Cette méthode implique, notamment, que
- la mesure sur site s'effectue au moyen d'un gonio-réflectomètre portable, et/ou
- la mesure en laboratoire de la table-r se fait sur un échantillon de revêtement au moyen d'un gonio-réflectomètre de laboratoire, et/ou
- la déduction de la table-r se fait par comparaison entre les résultats des mesures faites avec le gonio-réflectomètre portable d'une part sur site sur le revêtement routier inconnu et d'autre part sur des échantillons de revêtements routiers, contenus dans une base de données : Si les résultats des mesures faits au gonio-réflectomètre portable sont suffisamment proches, nous avons démontré que les tables-r correspondantes sont également proches.
Donc la table-r du revêtement inconnu sera proche de celle du revêtement de la base de donnée ayant les résultats de mesure au gonio-réflectomètre portable les plus proches de ceux mesurés sur site
(avec le gonio-réflectomètre portable), et/ou
- les mesures sur site sont effectuées selon une géométrie différente de celle dans laquelle sont mesurées les tables-r en laboratoire :
<EMI ID=1.1>
l'angle de 1 [deg.] ;
<EMI ID=2.1>
possible avec la précision requise, et/ou
- les mesures sur sites sont faites en de multiples endroits afin de tenir compte de la non homogénéité / non uniformité des revêtements réels.
La table-r représentative du revêtement étant la moyenne des tables-r déduites des différentes mesures effectuées sur le même site, et/ou
- le logiciel de comparaison des résultats de mesures sur site fait partie de l'invention
L'invention a également pour objet tout logiciel permettant la comparaison des résultats de mesure sur site.
D'autres particularités de l'invention apparaîtront des commentaires suivants et des dessins annexés :
Eclairer correctement ("éclairer juste") n'est possible qu'en connaissant très précisément le taux de réflexion de la chaussée.
Depuis des années, tous les calculs photométriques se font à partir des classes théoriques de revêtements R1, R2, R3 et R4.
Pour avoir des mesures plus précises, Comatelec à travers le groupe Schréder s'est équipé d'un réflectomètre de revêtement de laboratoire. Nous sommes les seuls fabricants en Europe en possession d'un tel réflectomètre. Son utilisation nous a permis d'établir que la classification R1, R2, R3, R4 peut conduire à un taux d'erreur pouvant atteindre 100%. De plus, les différences avec les nouveaux revêtement sont encore plus marquées.
Avec le réfloctomètre de laboratoire, le taux d'erreur est tombé à 15%.
Les inconvénients principaux en sont les opérations de carottage et de restauration de la chaussée. Ce travail destructif et fastidieux est de plus onéreux ce qui en limite son utilisation.
La grande innovation de cette méthode est le développement d'un réflectomètre de revêtement mobile permettant la multiplication des mesures in situ. La technique aisée des mesures nous donne in fine une image plus précise des caractéristiques de réflexion du revêtement à éclairer. Memphis est un instrument de mesure permettant de définir exactement la quantité de lumière à utiliser pour "éclairer juste".
REVENDICATIONS
1. Méthode pour déduire des propriétés de luminance d'une surface à partir de la mesure, pour certains angles d'incidence et de réflexion, du facteur réduit de luminance de la surface.
Method for determining the luminance of a surface
The object of the invention is to provide a method for deriving luminance properties from a surface (collectively referred to as the "table-r" representative of the surface), and more particularly the luminance properties of a road surface, from measurement, on site, for certain angles of incidence and reflection, of the reduced luminance factor of the surface / pavement.
This method implies, in particular, that
- the measurement on site is carried out by means of a portable gonio-reflectometer, and / or
- the laboratory measurement of the table-r is done on a coating sample by means of a laboratory gonio-reflectometer, and / or
- the deduction of the table-r is done by comparison between the results of the measurements made with the portable gonio-reflectometer on the one hand on site on the unknown road surface and on the other hand on samples of road surfaces, contained in a database: If the results of measurements made with the portable gonio-reflectometer are sufficiently close, we have shown that the corresponding r-tables are also close.
Therefore, the table-r of the unknown coating will be close to that of the coating of the database having the measurement results to the portable gonio-reflectometer closest to those measured on site.
(with the portable gonio-reflectometer), and / or
the measurements on site are carried out according to a different geometry from that in which the r-tables are measured in the laboratory:
<EMI ID = 1.1>
the angle of 1 [deg.];
<EMI ID = 2.1>
possible with the required accuracy, and / or
- Site measurements are made in multiple locations to account for non-homogeneity / non-uniformity of actual coatings.
The table-r representative of the coating being the average of the tables-r deduced from the different measurements made on the same site, and / or
the software for comparing the results of measurements on site is part of the invention
The invention also relates to any software for the comparison of measurement results on site.
Other features of the invention will become apparent from the following comments and the attached drawings:
Lighting correctly ("just lighting") is possible only by knowing very precisely the reflection rate of the roadway.
For years, all photometric calculations are based on the theoretical classes of coatings R1, R2, R3 and R4.
To obtain more precise measurements, Comatelec through the Schréder Group has equipped itself with a laboratory coating reflectometer. We are the only manufacturers in Europe with such a reflectometer. Its use has allowed us to establish that the classification R1, R2, R3, R4 can lead to an error rate of up to 100%. In addition, the differences with the new coatings are even more marked.
With the laboratory refloctometer, the error rate fell to 15%.
The main disadvantages are the operations of coring and restoration of the roadway. This destructive and tedious work is more expensive which limits its use.
The great innovation of this method is the development of a mobile coating reflectometer allowing the multiplication of measurements in situ. The easy measurement technique ultimately gives us a more accurate picture of the reflective characteristics of the coating to be illuminated. Memphis is a measuring instrument to accurately define the amount of light to be used to "light right".
CLAIMS
1. Method for deriving luminance properties of a surface from the measurement, for certain angles of incidence and reflection, of the reduced luminance factor of the surface.
Claims (1)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2005/0575A BE1016862A6 (en) | 2005-11-24 | 2005-11-24 | Road surface`s reflection characteristics measuring apparatus for calculating desired luminance performances of lighting installation, has light sources with optical systems positioned along respective incidence angles for lighting surface |
EP06112416A EP1790972A1 (en) | 2005-11-24 | 2006-04-10 | Apparatus and method for determining the reflection properties of a surface |
CA002630231A CA2630231A1 (en) | 2005-11-24 | 2006-11-22 | Method and apparatus for establishing reflection properties of a surface |
EP06819675A EP1952126A1 (en) | 2005-11-24 | 2006-11-22 | Method and apparatus for establishing reflection properties of a surface |
US12/093,820 US7872753B2 (en) | 2005-11-24 | 2006-11-22 | Method and apparatus for establishing reflection properties of a surface |
BRPI0618977-6A BRPI0618977A2 (en) | 2005-11-24 | 2006-11-22 | process and apparatus for establishing reflection properties of a surface |
CN2006800438715A CN101313208B (en) | 2005-11-24 | 2006-11-22 | Apparatus and method for determining the reflection properties of a surface |
RU2008125326/28A RU2008125326A (en) | 2005-11-24 | 2006-11-22 | METHOD AND DEVICE FOR DETERMINING SURFACE REFLECTION PROPERTIES |
PCT/EP2006/068770 WO2007060181A1 (en) | 2005-11-24 | 2006-11-22 | Method and apparatus for establishing reflection properties of a surface |
ZA200805225A ZA200805225B (en) | 2005-11-24 | 2006-11-22 | Method and apparatus for establishing reflection properties of a surface |
EC2008008576A ECSP088576A (en) | 2005-11-24 | 2008-06-23 | METHOD AND APPLIANCE TO ESTABLISH THE PROPERTIES OF REFLECTION OF A SURFACE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE2005/0575A BE1016862A6 (en) | 2005-11-24 | 2005-11-24 | Road surface`s reflection characteristics measuring apparatus for calculating desired luminance performances of lighting installation, has light sources with optical systems positioned along respective incidence angles for lighting surface |
Publications (1)
Publication Number | Publication Date |
---|---|
BE1016862A6 true BE1016862A6 (en) | 2007-08-07 |
Family
ID=38326032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE2005/0575A BE1016862A6 (en) | 2005-11-24 | 2005-11-24 | Road surface`s reflection characteristics measuring apparatus for calculating desired luminance performances of lighting installation, has light sources with optical systems positioned along respective incidence angles for lighting surface |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE1016862A6 (en) |
ZA (1) | ZA200805225B (en) |
-
2005
- 2005-11-24 BE BE2005/0575A patent/BE1016862A6/en not_active IP Right Cessation
-
2006
- 2006-11-22 ZA ZA200805225A patent/ZA200805225B/en unknown
Also Published As
Publication number | Publication date |
---|---|
ZA200805225B (en) | 2009-11-25 |
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Date | Code | Title | Description |
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RE | Patent lapsed |
Effective date: 20071130 |