This standard specifies the lighting measurement instruments, measurement methods and measurement contents for indoor and outdoor lighting places. This standard is applicable to the measurement of indoor lighting, the measurement of outdoor lighting places such as roads, squares, outdoor work areas and the measurement of building night scene lighting. This standard replaces GB/T5700-1985 "Indoor lighting measurement method" and GB/T15240-1994 "Outdoor lighting measurement method". Compared with GB/T 5700-1985 and GB/T 15240-1994, the main changes of this standard are as follows: - The measuring instrument part adds the spectroradiometer, power meter, voltage meter and current meter; - The lighting measurement method part adds the measurement method of on-site color temperature, color rendering index and lighting electrical parameters; - The building lighting measurement is divided into residential buildings, public buildings, industrial buildings and public places lighting measurement; - The road lighting part adds the lighting measurement of intersections, sidewalks and pedestrian tunnels; - Sports lighting measurement directly quotes JJG153-2007 "Sports Stadium Lighting Design and Test Methods" standard; - Add building night scene lighting measurement; - Add outdoor work area lighting measurement; - Add on-site color temperature, color rendering index and lighting electrical parameters in the relevant lighting measurement items. GB/T 5700-2008 Lighting Measurement Method GB/T5700-2008 Standard Download Decompression Password: www.bzxz.net
This standard specifies the lighting measurement instruments, measurement methods and measurement contents for indoor and outdoor lighting places. This standard is applicable to the measurement of indoor lighting, the measurement of outdoor lighting places such as roads, squares, outdoor work areas, and the measurement of building night scene lighting.
This standard replaces GB/T5700-1985 "Indoor Lighting Measurement Method" and GB/T15240-1994 "Outdoor Lighting Measurement Method".
Compared with GB/T5700-1985 and GB/T15240-1994, the main changes of this standard are as follows:
---Spectroradiometer, power meter, voltage meter and current meter are added to the measuring instrument part;
---The measurement method of on-site color temperature, color rendering index and lighting electrical parameters is added to the lighting measurement method part;
---Building lighting measurement is divided into residential buildings, public buildings, industrial buildings and public places lighting measurement;
---The lighting measurement of intersections, sidewalks and pedestrian tunnels is added to the road lighting part;
---Sports lighting measurement directly quotes JJG153-2007 "Sports Stadium Lighting Design and Test Methods" standard;
---Add building night scene lighting measurement;
---Add outdoor work area lighting measurement;
---Add on-site color temperature, color rendering index and lighting electrical parameters measurement in related lighting measurement items.
Appendix A of this standard is a normative appendix, and Appendix B is an informative appendix.
This standard is proposed and managed by the National Technical Committee for Ergonomics Standardization.
The drafting units of this standard are: China Academy of Building Research, China National Institute of Standardization, Jiangsu Product Quality Supervision and Inspection Center, Beijing Hailan Qili Lighting Equipment Installation Engineering Co., Ltd., Beijing Pingnian Lighting Technology Co., Ltd., OSRAM (China) Lighting Co., Ltd., Beijing Huiguang Semiconductor Lighting Technology Co., Ltd., Beijing Xingguang Film and Television Equipment Technology Co., Ltd. The
main drafters of this standard are: Zhang Shaogang, Zhang Xin, Zhang Jianping, Zhao Yuejin, Chen Xiangyang, Wang Shuxiao, Cao Weidong, Li Jiping, Liu Jianping, Yin Hongbin, Yan Feng, Ran Linghua, Liu Taijie. The
previous versions of the standards replaced by this standard are:
---GB/T5700-1985.
---GB/T15240-1994.
The clauses in the following documents become the clauses of this standard through reference in this standard. For all the referenced documents with dates, all the subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all the referenced documents without dates, the latest versions are applicable to this standard.
GB/T5697 Ergonomic Lighting Terminology
GB/T5702 Evaluation Method for Color Rendering of Light Sources
GB/T7922 Measurement Method for Color of Light Sources
GB50034 Architectural Lighting Design Standard
CJJ45 Urban Road Lighting Design Standard
JGJ/T119 Architectural Lighting Terminology Standard
JGJ153 Sports Lighting Design and Testing Methods
JGJ163 Urban Night Scene Lighting Design Specification
JJG34 Verification Procedure for AC Digital Voltmeter
JJG35 Verification Procedure for AC Digital Ammeter
JJG211 Luminance Meter
JJG245 Illuminance Meter
JJG780 AC digital power meter calibration procedure
JJG1032 Terms and definitions for optical radiation measurement
Preface I
1 Scope 1
2 Normative references 1
3 Terms and definitions 1
4 General requirements 3
5 Measuring instruments 4
6 Measurement methods 5
7 Measurement of indoor lighting in buildings 8
8 Measurement of outdoor lighting 9
Appendix A (Normative Appendix) Layout of measurement points for lighting measurements in various locations of building lighting 15
Appendix B (Informative Appendix) Measurement record form 19

ICS13.180
National Standard of the People's Republic of China
GB/T5700—2008
Replaces GB/T5700—1985, GB/T15240—1994 Measurement methods for lighting
Measurement methodsforlighting2008-07-16Released
Digital anti-counterfeiting
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of China
2009-01-01Implementation
GB/T5700—2008
Normative reference documents
Terms and definitions
General requirements
Measuring instruments
Measurement Method
Measurement of indoor lighting in buildings
Measurement of outdoor lighting
Appendix A (Normative Appendix)
Appendix B (Informative Appendix)
Measurement record form for layout of measurement points for lighting measurement in various locations of building lighting
GB/T5700—2008
This standard replaces GB/T5700—1985 "Measurement method for indoor lighting" and GB/T15240—1994 "Measurement method for outdoor lighting". Compared with GB/T5700-1985 and GB/T15240-1994, the main changes of this standard are as follows: the measuring instrument part adds the spectroradiometer, power meter, voltage meter and current meter; the lighting measurement method part adds the measurement method of on-site color temperature, color rendering index and lighting electrical parameters: the building lighting measurement is divided into residential buildings, public buildings, industrial buildings and public places lighting measurement; the road lighting part adds the lighting measurement of intersections, sidewalks and pedestrian tunnels; the sports lighting measurement directly quotes the JJG153-2007 "Sports Stadium Lighting Design and Testing Methods" standard; the building night scene lighting measurement is added; the outdoor work area lighting measurement is added; the on-site color temperature, color rendering index and lighting electrical parameters are added to the relevant lighting measurement items. Appendix A of this standard is a normative appendix, and Appendix B is an informative appendix. This standard is proposed and managed by the National Technical Committee for Ergonomics Standardization. The drafting units of this standard are: China Academy of Building Research, China National Institute of Standardization, Jiangsu Product Quality Supervision and Inspection Center, Beijing Hailan Qili Lighting Equipment Installation Engineering Co., Ltd., Beijing Pingnian Lighting Technology Co., Ltd., OSRAM (China) Lighting Co., Ltd., Beijing Huiguang Semiconductor Lighting Technology Co., Ltd., Beijing Xingguang Film and Television Equipment Technology Co., Ltd. The main drafters of this standard are: Zhang Shaogang, Zhang Xin, Zhang Jianping, Zhao Yuejin, Chen Xiangyang, Wang Shuxiao, Cao Weidong, Li Jiping, Liu Jianping, Yin Hongbin, Yan Feng, Ran Linghua, Liu Taijie. The previous versions of the standards replaced by this standard are: GB/T5700-1985.
-GB/T152401994.
1 Scope
Lighting measurement method
This standard specifies the lighting measurement instruments, measurement methods and measurement contents for indoor and outdoor lighting places. GB/T5700—2008
This standard applies to the measurement of indoor lighting, measurement of outdoor lighting places such as roads, squares, outdoor work areas, and measurement of building night scene lighting.
Normative references
The clauses in the following documents become clauses of this standard through reference in this standard. For all dated referenced documents, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions are applicable to this standard. 7 Ergonomic lighting terms
GB/T5697
GB/T5702
GB/T7922
Evaluation method of color rendering of light source
Method of measuring color of lighting source
Architectural lighting design standard
GB50034
Urban road lighting design standard
JGJ/T119
JGJ153
JGJ163
JJG211
JJG245
JJG780||tt ||Architectural lighting terminology standard
Sports lighting design and test methods
Urban night scene lighting design specifications
AC digital voltmeter verification procedure
AC digital ammeter verification procedure
Brightness meter
Luminance meter
AC digital power meter verification procedure
JJG1032
Terms and definitions
Optical radiation measurement terminology and definitions
GB/T5697, JGJ/T119, JJG1032 and the following terms and definitions are applicable to this standard. 3.1
(Light) illuminance
illuminance
The illuminance at a point on the surface is the quotient of the luminous flux (dd) incident on the surface element containing the point divided by the area of ​​the surface element (dA), and the unit is lux (1x).
(Light) brightness luminance
The quantity defined by the formula L=aA·coso.da, in candela per square meter (cd/m). 1
GB/T5700—2008
Where:
The luminous flux transmitted by the beam element at a specified point in the solid angle element dQ containing the specified direction, in lumen (1m); dA
The cross-sectional area of ​​the beam including the given point, in square meters (m); The angle between the normal of the beam section and the direction of the beam, in degrees (); The solid angle element in the specified direction, in steradian (sr). reflectance
Reflectance
The ratio of the reflected luminous flux to the incident luminous flux under the specified conditions of the spectral composition, polarization state and geometric distribution of the incident light. 3.4
Color temperature (degrees)
colour temperature
When the chromaticity of a light source is exactly the same as the chromaticity of a perfect radiator (black body) at a certain temperature, the absolute temperature of the perfect radiator (black body) is the color temperature of this light source. The unit is Kelvin (K). 3.5
Correlated color temperature
correated
colour temperature
When the chromaticity of a light source is on the trajectory of a perfect radiator (black body), the chromaticity of the light source and the absolute temperature of a perfect radiator (black body) at a certain temperature are the correlated color temperature of this light source, in Kelvin (K). When the chromaticity of a color stimulus is closest, the tristimulus values ​​(of a colour stinulus) P system is the amount of three reference colour stimuli required to achieve colour matching with the stimulus under consideration. In the given tristimulus scale, the symbols XY and Z are used to represent the tristimulus values, and in the CIE 1964 standard colour system, the symbols X1o, Y1o and Zio are used to represent the tristimulus values. Note: In CIE 1931#, the tristimulus values ​​are represented.
chromaticit
The colour properties shown in the CIE standard colour system. Note: The colour defined by the chromaticity coordinates is the ratio of each of the three stimulus values ​​to their sum.
Note: In the CIE1931 standard colorimetry system, the color coordinates a, y, & can be calculated from the three stimulus values ​​X, Y, Z; in the CIE1964 standard colorimetry system, the color coordinates T10, yi0, 210 can be calculated from the three stimulus values ​​X1o, Y10, Z1.3.9
Color rendering index
Colour rendering index
Measurement of the color rendering of a light source.
Note: It is expressed by the degree of conformity between the color of an object under the measured light source and the color of an object under the reference standard light source. 3.10
CIE general colour rendering index
CIE general colour rendering indexThe average value of the special colour rendering index of the light source for the eight standard colour samples specified by CIE. Note: It is generally called colour rendering index.
E lighting power density (LPD)
Lighting power density
GB/T5700—2008
The actual power consumed by lighting per unit area (including light source, ballast or transformer, etc.), in watts per square meter (W/m). 3.12
Uniformity ratio of illuminance Ui, U2
Usually refers to the ratio of the minimum illuminance to the maximum illuminance on a specified surface, symbolized by U1; also used as the ratio of the minimum illuminance to the average illuminance, symbolized by U2.
Eoverall uniformity of road surface luminance
The ratio of the minimum luminance to the average luminance on the road surface. 3.14
Longitudinal uniformityof road surface luminance
The ratio of the minimum luminance to the maximum luminance on the center line of the same lane. 3.15
Conflictareas
The areas such as entrances and exits of the road, intersections, and pedestrian crossings. Note: In such areas, the possibility of collisions between motor vehicles, between motor vehicles and non-motor vehicles and pedestrians, and between vehicles and fixed objects increases. 4 General requirements
4.1 Purpose of measurement
Measurement is carried out for the following purposes: to ensure visual work requirements and facilitate work efficiency and safety, save energy and protect the environment, and determine measures to maintain and improve lighting.
4.1.1 Check whether the lighting effects produced by lighting facilities are in compliance with various lighting design standards (such as GB50034, CJJ45, JGJ153, JGJ163, etc.).
4.1.2 Check whether the lighting effects produced by lighting facilities are in compliance with design requirements. 4.1.3 Compare the actual lighting effects of various lighting facilities. 4.1.4 Determine the changes in lighting over time. 4.2 Measurement conditions
4.2.1 When conducting lighting measurements on site, the lighting sources on site should meet the following requirements: a) The cumulative burning time of incandescent lamps and halogen tungsten lamps is more than 50 hours; b) The cumulative burning time of gas discharge lamps is more than 100 hours. When conducting lighting measurements on site, they should be conducted after the following time: 4.2.2
Incandescent lamps and halogen tungsten lamps should be burned for 15 minutes;
b) Gas discharge lamps should be burned for 40 minutes. 4.2.3 It is advisable to carry out lighting measurement at rated voltage. During measurement, the power supply voltage should be monitored; if the measured voltage deviation exceeds the range specified in the relevant standards, the measurement result should be corrected accordingly. 4.2.4 Indoor lighting measurement should be carried out without the influence of natural light and other non-measured light sources. Outdoor lighting measurement should be carried out on a clean and dry road or site. It should not be carried out in the bright moon or when there is water or snow on the measurement site. 4.2.5 Stray light should be excluded from entering the light receiver, and various personnel and objects should be prevented from blocking the light receiver. 4.3 Measurement content 4.3.1 The content of indoor lighting measurement should include: a) Illuminance on the relevant surface; Reflectance on each surface; Brightness of each surface and equipment; Color temperature, correlated color temperature and color rendering index of the lighting site; Electrical parameters of lighting.
Outdoor lighting measurement content should include:
Illuminance on the ground or working surface
Reflectance ratio of the ground or working surface and the surface of trees and buildings; Brightness of lighting on the ground or working surface and the surface of structures; Color temperature precision and color rendering index of the lighting scene; Electrical
Measuring instrument
(light) illuminance meter
For lighting with an illumination intensity of ≤0.11x
, a light meter of not less than
level should be used. For illumination measurement of road and square lighting, a resolution meter should be used. The measurement performance should meet the following conditions: Lighting measurement
Relative indication
Color pair Value: <±4%
V(a) matching error
Absolute value: ≤6%
Cosine characteristic (
(response) error table
difference absolute value
Shift error absolute value
<±1%
Non-linear error
The calibration of the illuminance meter shall comply with the provisions of JJG
(light) brightness meter
<4%;
245 provisions
Brightness measurement shall adopt a brightness meter of not less than human level. In the measurement of road lighting, when only the average brightness is required to be measured, an integrating brightness meter can be used; in addition to measuring the average brightness, it is also required to obtain the total brightness uniformity and brightness longitudinal For uniformity, a luminance meter with a telephoto lens should be used. The viewing angle in the vertical direction should be less than or equal to 2', and the viewing angle in the horizontal direction should be 2~20. 5.2.3
The metrological performance of the luminance meter used for lighting measurement should meet the following conditions: absolute value of relative indication error: ≤±5% (0.02); absolute value of V(a) matching error: <5.5%; absolute value of stability: <1.5%; absolute value of shift error: ≤±1.0%; absolute value of nonlinear error: <±1.0%. The calibration of the luminance meter should comply with the provisions of JJG211. Spectroradiometer
Measurement of color temperature and display on-site The instrument for detecting color index and colorimetric parameters shall be a spectroradiometer. The spectroradiometer for measuring color temperature and color rendering index at the lighting site shall meet the following conditions: the wavelength range is 380nm~780nm, and the photometric repeatability shall be within 1%; the absolute error of wavelength indication: ≤ soil 2.0nm; b)
spectrum bandwidth: <8nm;
d) spectrum measurement interval: ≤5nm;
e) the measurement error of chromaticity coordinates for light source A: 1△x≤0.0015, l△yl≤0.0015. 5.4 Power meter
5.4.1 The digital power meter with an accuracy of not less than 1.5 shall be used for electric power measurement, and shall have a harmonic measurement function. 5.4.2 The calibration of the power meter shall comply with the provisions of JJG780. 5.5 Voltmeter
5.5.1 The voltage meter with an accuracy of not less than 1.5 shall be used for voltage measurement. 5.5.2 The calibration of voltage meters shall comply with the provisions of JJG34. 5.6 Amperemeter
5.6.1 Current measurement shall use an amperemeter with an accuracy not less than Class 1.5. 5.6.2 The calibration of current meters shall comply with the provisions of JJG35. 6 Measurement methods
6.1 Measurement of illuminance
6.1.1 Center point method
GB/T5700—2008
6.1.1.1 In the area of ​​illuminance measurement, the measurement area is generally divided into a rectangular grid. The grid should be square. The illuminance should be measured at the center point of the rectangular grid, as shown in Figure 1. This point method is suitable for the measurement of horizontal illuminance, vertical illuminance or vertical illuminance in the direction of the camera. The vertical illuminance should indicate the normal direction of the illuminance measurement surface. O
0——Measurement point.
Figure 1 Schematic diagram of grid center distribution
6.1.1.2 The average illuminance of the center distribution method is calculated according to formula (1): M.NZE
Where:
Ea—average illuminance, in lux (lx); E:—illuminance at the ith measuring point, in lux (1x); M
number of longitudinal measuring points;
number of transverse measuring points.
6.1.2 Four-corner distribution method
（1）
6.1.2.1 In the area of ​​illuminance measurement, the measurement area is generally divided into a rectangular grid. The grid should be square. The illuminance should be measured at the four corner points of the rectangular grid, as shown in Figure 2. This point arrangement method is suitable for the measurement of horizontal illuminance, vertical illuminance or vertical illuminance in the direction of the camera. 5
GB/T5700—2008
Vertical illuminance should indicate the normal direction of the illuminance measurement surface. O
In-field points;
Border points;
Four corner points.
Figure 2 Schematic diagram of grid point distribution at the four corners
The average illuminance of the four-corner point distribution method is calculated according to formula (2): Eav=
Wherein:
E+2ZE+4EE）
Average illuminance, in lux (1x); Number of vertical grids;
Number of horizontal grids;
Illuminance of measuring points at the four corners of the measurement area, in lux (1x); Except for E., the illuminance of measuring points on the four outer edges, in lux (1x); Illuminance of measuring points within the four outer edges, in lux (1x). 6.1.3 The uniformity of illumination is calculated according to formula (3) and formula (4): Ui = Emin/Emax
Where:
Where:
Uniformity of illumination (extreme difference);
Minimum illumination, unit is 1x (lux); Maximum illumination, unit is 1x (lux). U2 = Emin/Eav
Uniformity of illumination (average difference);
Minimum illumination, unit is lux (1x); Average illumination, unit is lux (1x). 6.2 Measurement of brightness
. (2)
(3)
(4) www.bzxz.net
Measurement of brightness should generally be done by directly measuring the brightness with a brightness meter. For places where conditions are limited, indirect methods can be used to measure the brightness. When using a luminance meter to directly measure brightness, the luminance meter should be placed at the height of the observer's eyes, usually 1.50m for standing and 1.20m for sitting. In special occasions, it should be determined according to actual requirements. 6.2.1 The brightness measurement of indoor work areas should select the working surface or the main visual surface, select representative points, and there shall be no less than 3 measuring points on the same representative surface.
6.2.2 The measurement of road brightness shall be carried out in accordance with 8.1.2. 6.2.3 The brightness measurement points of the building's night view facade shall select the surface that represents the building's characteristics, and there shall be no less than 3 measuring points on the same representative surface. 6
6.3 Measurement of reflectance
GB/T5700—2008
6.3.1 The measurement of the reflectance of the lighting scene can be measured directly by a portable reflectance measuring instrument, or by an indirect method, that is, using a luminance meter plus a standard white board or a luminance meter plus an illuminance meter alone to measure the reflectance of the scene. For each measured surface, 3 to 5 measurement points are generally selected, and the arithmetic mean is calculated as the reflectance of the measured surface. 6.3.2 Measuring reflectance using a luminance meter and a standard white board. Place the standard white board on the measured surface, read the brightness of the standard white board with a luminance meter, keep the luminance meter in place, remove the standard white board, read the brightness on the measured surface with a luminance meter, and calculate the reflectance according to formula (5). 0
Wherein:
Lmeasured
Lwhiteboard
Pwhiteboard
Reflectance;
Lmeasured×Pwhiteboard
Lwhiteboard
Brightness of the measured surface, in candela per square meter (cd/m2); Brightness of the standard whiteboard, in candela per square meter (cd/m2); Reflectance of the standard whiteboard,
(5)
6.3.3 Measure the reflectance using the illuminance meter and luminance meter method. For diffuse reflection surfaces, after measuring the brightness and illuminance of the measured surface with a luminance meter and an illuminance meter respectively, the reflectance ratio can be calculated by formula (6): Yuan
Wherein:
Reflectance ratio;
Brightness of the measured surface, in candela per square meter (cd/m2); L
E—illuminance of the measured surface, in lux (Ix). (6)
6.3.4 When measuring the reflectance ratio of a diffuse reflection surface with an illuminance meter, a position of the measured surface that is not affected by direct light should be selected, and the receiver of the illuminance meter should be placed close to a certain position of the measured surface to measure its incident illuminance ER. Then, the photosensitive surface of the receiver should be aligned with the original position of the same measured surface and gradually moved away. After the illuminance value stabilizes, the reflected illuminance E is read. The measurement diagram is shown in Figure 3. Calculate the reflectance according to formula (7): E
Where:
p—reflectance;
Er—reflectance, in lux (lx); Er—human illuminance, in lux (Ix). Translation direction
Measured surface;
Receiver;
Illuminance meter.
Translation direction
Figure 3 Schematic diagram of indirect reflectance measurement method using illuminance meter 6.4 On-site color temperature and color rendering index measurement
· (7)
6.4.1 On-site color temperature and color rendering index measurement should be carried out using a spectroradiometer. The number of measurement points at each site should not be less than 9 (a single room in a residential building can be no less than 3). Then the arithmetic average is calculated as the color temperature and color rendering index of the measured lighting site. 6.4.2 The power supply voltage should be monitored during the measurement. If the measured voltage deviates greatly from the rated voltage of the light source, the measurement result should be corrected. The color temperature and color rendering index measurement of the lighting scene should comply with the provisions of GB/T7922, and the calculation should comply with the provisions of GB/T5702. 6.5 Measurement of electrical parameters of lighting
6.5.1 The electrical parameter measurement of the lighting scene should include the following: electrical parameters of a single lighting fixture, such as operating current, input power, power factor, harmonic content, etc.; a)
b) electrical parameters of the lighting system, such as power supply voltage, operating current, line voltage drop, system power, power factor, harmonic content, etc. Digital electrical measuring instruments with memory function should be used for measurement. 6.5.2 Measurement of electrical parameters of a single lighting fixture The electrical parameters of a single lighting fixture should be measured using a single-phase electrical measuring instrument with an appropriate range and functions that meet the requirements. 6.5.3 Measurement of electrical parameters of lighting system
Measurement of electrical parameters of lighting system should adopt three-phase measuring instruments with appropriate range and functions that meet the requirements; single-phase electrical measuring instruments can also be used for separate measurements, and then the total value is calculated from the separate measured values ​​as the electrical parameter data of lighting system. 6.6 Calculation of lighting power density
Lighting power density is calculated by formula (8):
Where:
LPD lighting power density, unit is watt per square meter (W/m2); P: input power of the i-th single lighting fixture in the measured lighting place, unit is watt (W); S is the area of ​​the measured lighting place, unit is square meter (m2). 7 Measurement of indoor lighting in buildings
7.1 General requirements
7.1.1 The spacing between measuring points for measuring indoor lighting illumination in buildings is generally selected between 0.5m and 10m. 7.1.2 Rectangular grid is suitable for illuminance measurement. 7.1.3 The average illuminance shall be calculated in accordance with the provisions of 6.1.1 or 6.1.2. The illuminance uniformity shall be calculated in accordance with the provisions of 6.1.3. ·.(8
7.1.4 For the measurement of color rendering index and color temperature, there should be no less than 3 measuring points in each functional area (room); when different types of light sources are used for mixed lighting, the color rendering index and color temperature of each light source should be measured separately, and the color rendering index and color temperature of the mixed light source should also be measured. 7.1.5 For the measurement of reflectance, there should be no less than 3 measuring points for each main material in each functional area (room). 7.1.6 The measurement of lighting electrical parameters should generally be carried out by functional area or whole household; if necessary, it can also be measured in separate rooms, and the total amount is finally calculated. The calculation of lighting power density should be carried out in accordance with 6.6.4. 7.1.7
7.1.8 The ambient temperature and instrument status should be recorded during measurement. 7.2 Residential Building Lighting Measurement
The location of lighting measurement for residential buildings and the location, height and recommended measurement spacing of illuminance measurement points should comply with the provisions of Table A.1. 7. 3 Public building lighting measurement
7.3.1 The lighting measurement location and illuminance measurement point location, height and recommended measurement spacing of library buildings, office buildings, commercial buildings, theaters (auditoriums), hotels, hospitals, museums and exhibition halls, and transportation buildings shall comply with the provisions of Table A.2 to Table A.10. 7.3.2 The lighting measurement of sports buildings shall comply with the provisions of JGJ153. 7.4 Industrial building lighting measurement
The location and illuminance measurement point location, height and recommended measurement spacing of industrial building lighting measurement shall comply with the provisions of Table A.11. 9
7.5 Public area lighting measurement and emergency lighting measurement GB/T5700—2008
7.5.1 The location and illuminance measurement point location, height and recommended measurement spacing of public area lighting measurement shall comply with the provisions of Table A.12. 7.5.2 The height of the illumination measurement point of emergency lighting is the ground, and the measurement grid is selected from 1.0m to 10.0m according to the size of the site; and the setting position, emergency working time and emergency working mode should be checked. 7.5.3 For emergency lighting signs, the sign brightness, contrast, chromaticity coordinates, and viewing distance should be measured, and the setting position, emergency working time and emergency working mode should be checked.
8 Outdoor lighting measurement
8.1 Road lighting measurement
8.1.1 Section and range of measurement
8.1.1.1 Selection of measurement section
It is advisable to select a typical section that can represent the measured road in terms of the spacing, height, overhang, elevation angle and consistency of light sources of lamps. 8.1.1.2 The section range of illumination measurement
In the longitudinal direction of the road, it should be the area between two lamp poles on the same side. In the transverse direction of the road, when the lamps are arranged on one side, the width should be the entire road width; when the lamps are arranged symmetrically, in the center, or staggered on both sides, half of the road width should be taken. 8.1.1.3 The road section for road brightness measurement should be within 100m from a lamp pole in the longitudinal direction of the road, and should at least include the area between two lamp poles on the same side; for staggered lighting, it should be the area between two lamp poles starting from the left lamp in the observation direction. In the transverse direction of the road, it should be the entire road width. 8.1.2 Measurement point layout method
8.1.2.1 The point layout method for road illumination measurement should divide the measurement section into a number of rectangular grids of equal size. a) When the illumination uniformity of the road surface is poor or the measurement accuracy is required to be high, the number of divided grids can be more. When the distance between two lamp poles is less than or equal to 50m, it is advisable to divide the distance into 10 equal parts along the longitudinal direction of the road (straight and curved roads). When the distance between two lamp poles is greater than 50m, it is advisable to divide the distance into equal parts with each grid side length less than or equal to 5m. Each lane should be divided into three equal parts in the transverse direction of the road.
b) When the illumination uniformity of the road surface is good or the accuracy of the measurement is required to be low, the number of grids can be less. The longitudinal grid side length can be taken according to the provisions of 8.1.2.1a), while the transverse grid side length of the road can be taken as the width of each lane. 8.1.2.2 Method of arranging points for brightness measurement
If only an integrating luminance meter is used to measure the average brightness of the road surface, there is no need to arrange points. If a luminance meter is used to measure the brightness of each measuring point, points should be arranged. a
In the longitudinal direction of the road, when the distance between two lamp poles on the same side is less than or equal to 50m, 10 measuring points should be arranged at equal intervals between the two lamp poles; when the distance between the two lamp poles is greater than 50m, the number of measuring points should be determined based on the principle that the distance between the two measuring points is less than or equal to 5m; in the transverse direction of the road, 5 measuring points should be arranged in the transverse direction of each lane, the middle point should be located on the center line of the lane, and the two outermost points on both sides should be located at 1/10 of the lane width from the boundary line on both sides of each lane. b) When the brightness uniformity is good or the measurement accuracy requirement is low, 3 points can be arranged in the transverse direction of each lane, the middle point should be located on the center line of each lane, and the two points on both sides should be located at 1/6 of the lane width from the boundary line on both sides of each lane. 8.1.2.3 The point arrangement method for measuring illumination and brightness at the same time should be used to measure illumination and brightness in accordance with the point arrangement method for brightness measurement in 8.1.2.2. 8.1.3 Measurement of Illuminance and Brightness
8.1.3.1 Illuminance Measurement
The height of the measuring point for illuminance measurement should be the road surface. a) Four-corner point method: The measuring points should be arranged at the four corners of the grid (see Figure 4), and the illuminance at the four corner points of the grid should be measured.
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