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 PDF

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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
Application number
BE2005/0575A
Other languages
French (fr)
Original Assignee
Schreder
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schreder filed Critical Schreder
Priority to BE2005/0575A priority Critical patent/BE1016862A6/en
Priority to EP06112416A priority patent/EP1790972A1/en
Priority to US12/093,820 priority patent/US7872753B2/en
Priority to CA002630231A priority patent/CA2630231A1/en
Priority to EP06819675A priority patent/EP1952126A1/en
Priority to BRPI0618977-6A priority patent/BRPI0618977A2/en
Priority to CN2006800438715A priority patent/CN101313208B/en
Priority to RU2008125326/28A priority patent/RU2008125326A/en
Priority to PCT/EP2006/068770 priority patent/WO2007060181A1/en
Priority to ZA200805225A priority patent/ZA200805225B/en
Application granted granted Critical
Publication of BE1016862A6 publication Critical patent/BE1016862A6/en
Priority to EC2008008576A priority patent/ECSP088576A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47Scattering, i.e. diffuse reflection
    • G01N21/4738Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474Details of optical heads therefor, e.g. using optical fibres
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55Specular reflectivity
    • G01N21/57Measuring gloss
    • G01N2021/575Photogoniometering
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/02Mechanical
    • G01N2201/022Casings
    • G01N2201/0221Portable; 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)

2. Méthode selon la revendication 1, caractérisé en ce que la mesure sur site s'effectue au moyen d'un gonio-réflectomètre portable. 2. Method according to claim 1, characterized in that the measurement on site is carried out by means of a portable gonio-reflectometer. 3. Méthode selon l'une ou l'autre des revendications précédentes, caractérisé en ce que la mesure en laboratoire de la table-r se fait sur un échantillon de revêtement au moyen d'un gonio-réflectomètre de laboratoire. 3. Method according to any one of the preceding claims, characterized in that the laboratory measurement of the table-r is done on a coating sample by means of a laboratory gonio-reflectometer. 4. Méthode selon l'une ou l'autre des revendications précédentes, caractérisé en ce que la déduction de la table-r se fait par comparaison entre les résultats des mesures faites avec le gonioréflectomètre 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. 4. Method according to either of the preceding claims, characterized in that the deduction of the table-r is done by comparison between the results of measurements made with the portable gonioreflectometer on the one hand on site on the road surface unknown and on the other hand on samples of road surfaces, contained in a database. 5. Méthode les mesures sur site sont effectuées selon une géométrie différente de celle dans laquelle sont mesurées les tables-r en laboratoire : <EMI ID=3.1> 5. Method The on-site measurements are performed according to a geometry different from that in which the r-tables are measured in the laboratory: <EMI ID = 3.1> l'angle de 1 [deg.] ; the angle of 1 [deg.]; <EMI ID=4.1> 6. Méthode les mesures sur sites sont faites en de multiples endroits afin de tenir compte de la non homogénéité / non uniformité des revêtements réels.  <EMI ID = 4.1> 6. Method Site measurements are made in multiple locations to account for non-homogeneity / non-uniformity of actual coatings. 7. Méthode selon l'une ou l'autre des revendications précédentes, caractérisé en ce qu'elle implique un logiciel permettant la comparaison des résultats de mesure sur site. 7. Method according to one or other of the preceding claims, characterized in that it involves software for the comparison of measurement results on site.
BE2005/0575A 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 BE1016862A6 (en)

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

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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)

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Publication number Publication date
ZA200805225B (en) 2009-11-25

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Effective date: 20071130