The most comprehensive sports lighting guide, come and get it soon!

　　In badminn, the ball is small and fast, and the requirements for the light environment are very high. The quality of the light directly affects the performance of the athletes, the judgment of the referees on various boundary balls, the effect of TV broadcasting, and the viewing experience of TV viewers.

　　Thanks  the hosting of the 2008 Beijing Olympics and the 2010 Guangzhou Asian Games, the construction of international standard stadiums has allowed citizens  experience world-class competition venues. As an important facility of the stadiums, lighting systems have received more and more attention from the owners. In the World Cup matches, we will see more of the lighting design of the football field on TV (micro classroom).

　　Preliminary articles of stadium lighting design

　　For the lighting design of the stadium, we must first figure out the lighting level. The national standard classifies sports venues as follows:

　　When the level requirements are not clear, at least it is necessary  figure out whether rebroadcasting is necessary, because the rebroadcasting or not will directly affect the choice of lamps and the way of lighting.

　　Let's first talk about the situation that does not need  be broadcast:

　　Non-rebroadcasting means that there is usually no requirement for vertical illuminance. First, use a simple diagram  illustrate the relationship between the direction of light and the direction of illuminance.

　　The vast majority of venues that do not require television broadcast only require horizontal illumination (except for fencing). Then we also know the direction of the light: the more vertical it is  the ground, the less light it is.

　　Let's talk about it in detail in combination with different venues:

　　stadium:

　　Our country generally has many comprehensive gymnasiums, including handball, basketball, volleyball, badminn and other sports.  figure out the layout of the venue is very important for the later design!

　　Common layout of gymnasiums

　　Picture: Gypsophila arrangement (hoisting on the p grid).

　　Picture: Horse road layout.

　　The pros and cons of the two arrangements:

　　Gypsophila: This method is a very light-saving method (the vertical ground has the most light); but in this arrangement, generally the p grid cannot be used for people, and a lift truck must be used for maintenance. This method usually uses high bay lights, most of the time the glare is relatively small, but it is more uncomfortable for some sports (such as badminn, volleyball and other sports with more heads up); of course, we can use T5 highbay lamps with less direct glare make up.

　　Equestrian style: It is necessary  consider the problem of glare control (horse lane height, projection angle, etc.). This arrangement is relatively simple  maintain, and can also provide a certain vertical illuminance, so that the audience is more comfortable  watch the sky with stars (good vertical illuminance, people 'S face is clearer).

　　Swimming pool:

　　Swimming pool layout

　　Picture: Gypsophila arrangement (hoisting on the p grid).

　　Picture: Horse road layout.

　　The pros and cons of the two arrangements:

　　The gypsophila layout is the same as the gymnasium just now. It saves lights, but it is more troublesome  maintain. It is even necessary  drain the entire pond when changing the light source. For the backstroke, the glare will also be great, and the advantages of the horse-travel arrangement are obvious.

　　Outdoor venue:

　　Picture: Pole (wer) type.

　　Picture: Equestrian style.

　　The pros and cons of the two arrangements:

　　The vertical pole type is more convenient for small venues, especially those without sheds. Equestrian style is usually only used in venues with canopies, and the height of the canopy needs  be high enough.

　　Special lighting method:

　　In addition, there are some other special lighting methods, such as the indirect lighting in the picture below:

　　Lighting design of stadiums, lighting type selection and lighting calculation

　　In the previous paragraph, we listed the lighting methods that do not require TV broadcast venues.  put it simply, there are two major types: the sky-filled star type and the horse track (standing pole) type. This issue talks about the lighting calculation problem.

　　When it comes  calculation, the first thing we have  talk about is the standard. JGJ 153-2007 "Sports Stadium Lighting Design and Testing Standards" divides the illuminance standards of sports lighting in six levels (excluding emergency broadcasting), among which three are not required for rebroadcasting. The major levels are as follows:

　　I Training and recreational activities

　　II Amateur competition, professional training

　　III Professional Competition

　　At the same time, the illuminance standards for most sports are listed. The illuminance standards for different sports are different, but they basically follow a principle: the faster the movement speed, the higher the illumination requirements.

　　First of all, let’s talk about gymnasiums. For comprehensive gymnasiums, usually small domestic gymnasiums have multiple venues and multiple sports are all in one venue, and there is no venue layout even when doing lighting design. In this case, we usually do Ensure that a large field (basketball or even handball) reaches the professional level, in addition  the entire area, meet professional training or only meet the recreational training level.

　　For different lighting methods, the selection and calculation methods of luminaires are also different.

　　Choose lamps according  the lighting method

　　1. Starry sky lights

　　For the sky-star lighting, we must first determine the selection of the lamp. Generally speaking, we have the following options:

　　1. Metal halide high ceiling light

　　The power of this kind of lamps can be selected according  the height. Generally speaking, 250W is recommended within 10 meters, 400W is recommended for 10-20 meters, and 1000W high ceiling lights are not recommended for use below 20 meters.

　　Due  the large direct-view glare of this kind of lamps, the effect of raising the head should be considered when lighting, and the lighting method mentioned in JGJ 153-2007 "Sports Stadium Lighting Design and Testing Standard" (such as the badminn PA area should not be above Arrange lamps). Due  the restart problem of the metal halide lamp, don't forget  install additional emergency lighting fixtures.

　　The last thing  note is that because metal halide lamps have an explosion hazard, such lamps must be equipped with front glass (tempered glass).

　　2. T5 high ceiling light

　　Such lamps are usually more efficient and have less direct glare. They are a good substitute for metal halide high bay lights.

　　Usually the maximum power can reach 6*54W, which can perfectly replace 400W metal halide lamps with good light distribution and efficiency.

　　However, because the T5 tube is relatively fragile, it is recommended  use a protective steel mesh when using such lamps.

　　The last is that emergency lighting does not need  be equipped with lamps separately.

　　3. LED high ceiling light

　　There have been many controversies about the use of LED lamps in stadiums, but I personally think that with the improvement of efficiency and power, it is also a good choice for venues without TV broadcast requirements.

　　Two, horse-style cloth lights

　　We usually choose floodlights for horse-street lighting. The most important point for horse-street lighting is that the elevation angle from the horse-street  the center of the venue is no more than 65 degrees. When calculating whether the horse-street height is appropriate, the height of the horse-street should not be o much smaller than the center line of the horse-street. Half of the horizontal distance. The power also basically follows the principle I said before.

　　As for the flood light, we usually encounter three different types of light distribution:

　　Axisymmetric Symmetry Asymmetric

　　For axis symmetry, it is usually used when the height of the horse track is higher (more than 15 meters) and the projection distance is longer (the field is larger), it will save light and the uniformity is be