Lighting design is not only to provide functional lighting design in the gym, but sometimes it may be the decisive factor influencing the normal performance of the game.
Just like this poster says:
But in fact, not every course is used for professional competitions, just like what kind of milk is called Su, so today we will leave the professional-grade course to talk about the general entertainment level football field lighting. do.
In the spirit of professionalism and fools, the bottle shoes that have been upgraded to jars are used to tell the friends: What kind of lights should be used in the football field of ordinary entertainment activities.
The recent chestnuts are so expensive (in fact, the dryers are more expensive, um!), buy 10 yuan, small half bags, and eat less than a quarter of an hour. Next, I will give you a wild chestnut that doesn't need money. I hope that you don't eat it all at once, eat it slowly, and taste it for a while.
Standard football fields, plus track and field, very common venues, new sports centers, Olympic sports centers, etc. will have such a venue. Of course, those are big venues for TV broadcast. I am next to the big venue. Subfield, used for training. This kind of venue will also be seen in some schools, enterprises, and government agencies.
The standard football field size is 105m×68m, and the outer circle of the stadium is the track and field venue. This means that the pole will be far from the football field and the pole height will be very high. The position of the poles given on the drawings is on both sides of the field. The distance between the poles is 81.96m (measurement error should be 82m), and the distance between the poles and the edge of the football field is 24.02m (measurement error, it should be 24m).
The pole height is 27.7m, four light poles, and six sets of 2000W metal halide floodlights are placed on each pole.
The lighting side recommends:
1. Light source: 2000W double-ended gold halogen light source is used. The color temperature is 5600K, the index is 90, and the luminous flux is 226000 lm. (This parameter can be seen at a glance who is home, haha, the other is almost the same as its parameters.)
2, lamps: floodlights, the efficiency of the lamps is about 73%, the rest will not repeat them.
3. Light pole height: 27.7m.
4, the projection angle of the luminaire: according to the calculation results in real-time adjustment, to ensure uniformity and low glare on the premise of how you project.
5. Control: Simultaneous switch.
Let's take a look at the results calculated using the software.
The calculated renderings (the list of projection lights piled the lights on one point, so you can't see the lights).
The calculated pseudo color map. (I did not check the calculation object when calculating, because the light pile will be blocked by the light pole at one point)
Analysis process:
1, light source and lamps
2000W metal halide floodlights, then ask me how to replace with LED, be careful I will mark you. This question is the same as "Why not eat meat?" In the words of Teacher Xu: Why do you have to use bird's nest to fill your stomach when rice can be eaten?
2, the position of the pole
There must be children's shoes to hold the standard to question whether the position of this pole is in line with the national standard. Look at the picture below:
All the articles are in conformity. It seems that there are little friends who can't understand. If you don't understand, it's right. It shows that the detailed explanations of the public numbers pushed before are useless. According to my set.
3, the height of the pole
I have not come here according to the national standard, because according to the national standard, the height of the pole is 33.2m (good high!!!), and a training venue is to put 24 lights, so high pole, it is not worthwhile. Here I made my own claim to lower the pole height, 27.7m. Why do you want to do this? Of course, in order to save money, the height of the poles stipulated by the national standard is mainly to prevent the glare value from exceeding the standard. I can lower the height of the pole to control the glare within the scope of the national standard, and do not believe the results.
Finally, let's look at the results report:
The national standard requires an average illumination of 200lx for entertainment and training activities, which is achieved.
Figure: By the way, tell everyone how to put the glare test point on the football field.
Figure: The calculated values ​​of the glare test points are all within the limits specified by the national standard.
The above is a fool's illumination of a football field, and the little friends who just made the lighting will follow suit.
Figure: It’s not a matter of grabbing a 2000W fixture! Be sure to use this built-in anti-glare bezel.
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