Illumination standard of public areas, in order to carry out daily work and life normally, our space needs sufficient lighting support, and only appropriate illumination can provide a suitable living and working environment. Let's look at the lighting standards in public areas.
Illumination standard of public * * * area 1 illumination standard value of commercial buildings
The reference plane of a room or place and its standard value of high illuminance (Lx) UGR Ra.
Comprehensive store business hall 0.75m horizontal plane 300 22 80
High-end shopping mall business hall 0.75m horizontal plane 500 22 80
Comprehensive supermarket business hall 0.75m dining table top 300 22 80
High-end supermarket business hall 0.75m horizontal plane 500 22 80
Cashier 500-80
Standard value of library building lighting
The reference plane of a room or place and its standard value of high illuminance (Lx) UGR Ra.
General reading room 0.75m horizontal plane 300 19 80
Reading rooms of national and provincial libraries are 0.75m horizontal 500 19 80 reading rooms for the aged 0.75m table top 500 19 80.
Rare book reading room 0.75m horizontal plane 500 19 80
Exhibition hall, catalogue hall (room) cashier hall 0.75m horizontal plane 300 19 80
Stack 0.25m horizontal plane 50-80
Workshop 0.75m horizontal plane 300 19 80
Standard value of school building lighting
The reference plane of a room or place and its standard value of high illumination (Lx) UGR Ra classroom desk 300 19 80
Laboratory experiment desktop 300 19 80
Desktop of art classroom 500 19 90
Multimedia classroom 0.75m horizontal plane 300 19 80
Classroom blackboard 500-80 blackboard surface
Standard value of hospital building lighting
The reference plane of a room or place and its standard value of high illumination (LX) Ugra treatment room 0.75m horizontal plane 300 19 80
Laboratory 0.75m water level 500 19 80
Operating room 0.75m horizontal plane 750 19 90
Consultation room 0.75m horizontal plane 300 19 80
Waiting room and registration hall level 0.75m 200 19 80
Ward floor 100 22 80
Nurse station 0.75m, horizontal plane 300-80.
Pharmacy 0.75m level 500 19 80
Intensive care unit 0.75m level 300 19 80
The standard illuminance value of public area 2 is based on different spatial attributes, which is formulated after long-term practice, meaning that a specific space is most suitable under a certain illuminance value, and the appropriate illuminance value is of great significance to people's production and life. For example, the illumination of ordinary office is almost 300Lx, the professional drawing room needs to reach 500Lx, and the hospital operating room needs to reach about 1000Lx.
Illuminance refers to the luminous flux received per unit area on the illuminated surface. If you calculate the brightness, you have to multiply it by the reflection coefficient of the illuminated surface and then divide it by π. However, the physical quantity that human eyes can feel is indeed the "brightness" value. Why not use brightness value instead of brightness value as lighting standard? Because we can't specify or predict the reflectivity of the illuminated surface when designing lighting, we can only examine its illuminance value.
Illuminance (illuminance) is a physical quantity representing the brightness of the illuminated surface. The illuminance of a point on the surface is defined as the ratio of the luminous flux incident on the container where the point is located to the container area. Numerically equal to the luminous flux projected on the unit area.
In the international system of units, the unit of illumination is lux and the symbol is lx. 1 lux is equal to 1 luminous flux (lumen, lm) is evenly distributed on the area of 1m2. Illumination is based on the luminous flux received by the vertical plane, which will be reduced if it is tilted.
The standard values of illuminance should be 0.5, 1, 3, 5, 10, 15, 20, 30, 50, 75, 100, 150, 200, 300, and 200.
Lx (lux) is the unit of illumination.
The standard value of illuminance is classified as the smallest change of illuminance obviously felt in subjective effect, and the difference of illuminance is about 1.5 times, which is basically consistent with the standard classification of indoor workplace lighting of CIE International Luminous Committee S008/E-200 1.
Measurement of lighting standard 3 for public areas.
First of all, it is necessary to confirm whether the measurement conditions of on-site illuminance are met, and different lighting lamps need to have accumulated ignition time to reach the corresponding time, and then wait for the continuous on-site time after reaching the ignition point and work normally at the rated voltage before starting measurement.
Then choose to use the four-corner distribution method or the center distribution method as needed, and draw the number and position of distribution points in the designated area.
Then use the illuminance meter to start measuring according to the laid points. Generally, the height of 0.75 meters or the height of working face is selected for height measurement, and the data of points are recorded one by one.
Finally, according to the selected distribution mode, the average illuminance is calculated by using the corresponding formula.
Note: In the actual measurement process, natural light, the influence of reflected light and artificial occlusion should be avoided.
If the lighting result is not in line with the expectation, the lighting lamp should be replaced or local lighting should be installed to make the illumination in the workplace and life meet the requirements.
Test principle and method of illuminance meter
Testing principle of 1. illuminance
Illuminance is the area density of luminous flux received on the illumination plane. Illuminator is an instrument used to measure the illumination of the illuminated surface, and it is one of the instruments used in illumination measurement.
2. Structure principle of illuminance meter
Illuminator consists of photometric head (also called light receiving probe, including receiver, V(λ) pair filter and cosine corrector) and reading display. See 1 for its structure.