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GBZ26212-2010: Discomfort glare in interior lighting
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| GB/Z 26212-2010 | English | 714 |
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Discomfort glare in interior lighting
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GB/Z 26212-2010
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Basic data | Standard ID | GB/Z 26212-2010 (GB/Z26212-2010) | | Description (Translated English) | Discomfort glare in interior lighting | | Sector / Industry | National Standard | | Classification of Chinese Standard | K70 | | Classification of International Standard | 91.160.10 | | Word Count Estimation | 36,384 | | Date of Issue | 2011-01-14 | | Date of Implementation | 2011-06-01 | | Quoted Standard | CIE 17.4-1987; CIE 29.2-1986 | | Adopted Standard | CIE 117-1995, IDT | | Regulation (derived from) | ?National Standard Approval Announcement 2011 No.2 | | Issuing agency(ies) | Ministry of Health of the People's Republic of China | | Summary | This standard specifies the CIE glare index formula and a CIE luminance limit system-called "CIE system security guards ", and use them to predict the work environment uncomfortable glare. You can use formulas to predict a series of specific conditions have computer space uncomfortable glare. Brightness limit system is used simply to assess the suitability of an ordinary lighting fixtures in a limited number of conditions. | GBZ26212-2010: Discomfort glare in interior lighting---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Discomfort glare in interior lighting
ICS 91.160.10
K70
People's Republic of China national standardization of technical guidance documents
Indoor lighting is not comfortable glare
(CIE 117-1995, IDT)
Posted on.2011-01-14
2011-06-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Directory
Preface Ⅰ
Introduction Ⅱ
1 General and scope 1
2 uncomfortable glare 1
3 formula export 1
4 Uniform Glare Level (UGR) Formula 2
4.1 Formula 2
4.2 background brightness 2
4.3 lamp brightness 3
4.4 Stereoscopic angle of the observer's eye 3
4.5 Location Index 3
5 The nature of the UGR formula 5
6 UGR formula of the limitations 6
7 Export Method 6
7.1 Exported List Method 6
7.2 Export UGR Curve Method 6
Appendix A (informative) unified glare rating form 7
A.1 Introduction 7
A.2 Form standard and reference parameters set 9
A.3 Calculation of UGR tables 12
A.4 Application of UGR forms 15
Appendix B (informative) UGR curve 18
B.1 UGR curve 18
B.2 Derivation of UGR curves 19
B.3 UGR curve of the use 19
Appendix C (informative) lighting data 20
C.1 Introduction 20
C.2 Light intensity distribution table 21
C.3 lamp shape and size data 21
Appendix D (Informative) Example 24
D.1 Lighting Design Figure 24
D.2 Average illuminance calculation 26
D.3 Calculation of UGR values
D.4 Comparison of calculated values
References 31
Foreword
This guidance document is equivalent to CIE117-1995 "Inconsistent glare for indoor lighting" (English version).
This Guidance Document is equivalent to CIE 117-1995.
For ease of use, the following technical editorial changes have been made in this Guidance Document.
a) Use decimal '.' instead of ',' as a decimal point;
b) Delete the preface of CIE 117-1995.
Appendix A, Appendix B, Appendix C and Appendix D of this guidance document are informative appendices.
This Guidance Document is proposed by China National Light Industry Council.
The guidance of technical documents by the National Lighting Standardization Technical Committee (SAC/TC224) centralized.
The drafting of the guidance of technical documents. National Electric Light Source Quality Supervision and Inspection Center (Beijing), Sheng Hui Lighting (Zhejiang) Co., Ltd.
Division, Beijing New Materials Technology Promotion Center, China Quality Certification Center, Honeywell Long can Electrical System Technology (Guangdong) Co., Ltd., Dongguan City
Commodities Optoelectronics Technology Co., Ltd., Beijing Institute of Light Sources.
The main drafters of this guidance document. Hua Shu Ming, Shen Jinxiang, Ruan Jun, Xu Wenshen, Fu Baocheng, Li Weisheng, Guo Jiankun, Li Jinhong,
Jiang Shan, Duan Yan Fang.
This guideline is for reference only. The suggestions and opinions on this technical document are directed to the standardization administration under the State Council
Department reflected.
Introduction
The Uniform Glare Rank (UGR) formula described in this guidance document contains features of the Einhorn and Hopkinson formulas
Combined with the Guth Location Index. It can be considered that this formula contains the main formula precision in terms of usability and glare prediction accuracy
China part. The formula states that the glare index is influenced by the observer's position and line of sight.
In the appendix, this guidance document also describes a list method that uses baseline values and standard conditions to allow the generation of a simple
Table, similar to the utilization factor table used in the fixture data page.
A rough estimate of discomfort glare is given by the brightness limit curve (UGR curve) method. This is also given in the appendix
How to draw and use.
This guidance document recommends the use of a practical CIE discomfort glare evaluation system in the next edition of the CIE Guide to Interior Lighting.
Indoor lighting is not comfortable glare
1 General and scope
CIE 29.2-1986 contains the CIE Glare Index formula and a CIE brightness limit system called the CIE Safety Guard System,
Use them to predict uncomfortable glare in your work environment.
Computer-based formulas can be used to predict a space discomfort glare with a specific set of conditions. Brightness limit system is used
Simply evaluate the suitability of a lamp for general lighting under a limited number of conditions.
The TC3-13 committee was asked to provide a "real glare evaluation system." This report contains the results of this task.
Three glare evaluation methods have been developed.
a) The basic Uniform Glare Rating (UGR) formula;
b) Calculated formulas that can be deduced for simple comparison under different lighting conditions;
c) Derived from the "brightness limit song can help lighting design and lighting designers can guide the general applicability of light"
Line Law. "
UGR formula is recommended by CIE. Its practical application requires the use of computer software. The two exported methods included in the attachment are
In order to provide information that can assist lighting manufacturers in designing aids and publish them as luminaire data pages (derived methods are available in some countries
Standard is also used).
2 uncomfortable glare
Discomfort Glare is defined in CIE 17.4-1987 as follows.
In the case of not necessarily diminishing the visual effects of objects, resulting in uncomfortable glare.
3 formula of the export
According to a study and practice of uncomfortable glare, the following CIE Glare Index (CGI) was proposed in CIENo.
formula.
CGI = 8log2 · 1 Ed
Ed Ei
ΣL
2ω
êê
úú2 (3.1)
In the formula.
Ed --- direct light illumination (lx) in the eyes with all light sources;
Ei --- indirect illumination in the eyes (lx);
L --- in the direction of the observer eye each luminaire light-emitting part of the brightness (cd · m-2);
ω --- in the observer's eyes each luminaire luminous angle of the solid part;
p --- Each fixture of the Goose position index (relative to the line of sight of displacement).
The log throughout this report refers to the base 10 logarithm.
At the time, the formula was considered the best mathematical compromise among different national systems. Use this formula to derive a viable option
Comfort glare evaluation system encountered many difficulties in the process, so a number of simplified treatment.
All discomfort formulas have the following form.
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