With the application of LED display in stadiums and gymnasiums, the installation and design of LED display in stadiums and gymnasiums has become the focus of attention of stadiums and manufacturers. In this regard, some professionals summarized the installation and design requirements of LED display screens in stadiums and Gymnasiums in the following aspects.

1、 The safety and reliability requirements of LED display screen, the crowd density of stadiums and gymnasiums is large, and the safety performance of their venue equipment should be put in the first place

Generally, the safety performance of LED display screen in stadiums and gymnasiums shall meet the requirements of 5.4 in SJ / t11141-2003 standard, and the reliability shall meet the requirements of 5.10 in the standard. In terms of material selection, it is required to select polymer materials with good flame retardant performance (including LED module shell, LED module filler, PCB board, power line sheath, etc.). At the same time, in terms of power supply design, the LED display screen of stadiums and gymnasiums must be powered separately and meet the requirements of 5.8 in SJ / t11141-2003 standard; The construction acceptance of cable lines shall comply with the requirements of GB50168 and gb50171; The project quality shall meet the requirements of gb50303. In addition, the LED display screen of sports events shall have smoke sensing, lightning protection, automatic fire alarm and automatic screen closing functions, and the distribution cabinet shall have overload protection function, leakage protection function and step-by-step power on function.

How to install LED display on stadiums

2、 Requirements on installation position and quantity of display screen

The installation position of LED display screen for sports events needs to ensure that more than 95% of the audience with fixed seats in the venue can watch effectively, with wide sight distance and vision. At the same time, it is required that the content displayed on the LED display screen can be easily and clearly seen by the athletes, coaches and referees (except the on-site scoring referees in the diving competition).

3、 Requirements for maximum sight distance and character height of LED display screen

The brightness of full-color LED display screen of outdoor stadiums and gymnasiums shall be more than 5000cd / m2; Dual primary color display more than 4000cd / m2; Monochrome 2000cd, more than square meters. The brightness of full-color LED display screen of indoor stadiums and gymnasiums shall be more than 1000cd / m2; Dual primary color LED display screen more than 300cd / m2; Monochrome 120cd / m2 or more. At the same time, in terms of character height requirements, each character of LED display screen of swimming pool and diving pool with independent building structure shall be at least higher than 0.2m, and each character of LED display screen of swimming diving pool with integrated building structure shall be at least higher than 0.28M.

4、 Optical performance requirements of LED display screen

The LED display screen of sports events shall have wide viewing angle, long visual distance, uniform brightness and adjustable. When the background illumination is less than 20lx, the contrast of LED display screen shall reach 100e1 The chromaticity coordinates of the white field can be adjusted within the color temperature of 5000k-9500k according to the use environment. According to the CIE1931 chromaticity system, the allowable deviation is △ x ∣ ≤ 0.030 and △ y ∣ ≤ 0.030.

5、 The display content of LED display screen can be controlled in real time

It is required to display the rolling timing of the game in real time; Scrolling competition results can be displayed; Can turn the page to display the competition results; The displayed text content can be switched automatically and manually. For full-color LED display screen with graphic and video display functions, text, pictures, animation and live broadcast images shall be able to switch automatically and manually.

In order to ensure the convenient and accurate use of the display screen, the multi-functional gymnasium should adhere to the requirements of high standard, high technology and high quality in the design and manufacture, which can be analyzed from the following aspects.

1.1 high standard materials

Luminescent materials. Luminescent material is the most important material of display screen, especially full-color display screen. It is the key to ensure the display effect, high reliability and long life of display screen. The main reference indexes are brightness and uniformity.

Control driver chip. The control driver chip is the guarantee of the key design of the display screen. Due to the high technical content of this part and the uneven level of manufacturers, the design of this part should be treated with caution.

Switching power supply. Switching power supply is a component with high failure rate in the display screen. High quality switching power supply must be used to meet the use requirements of the display screen in the gymnasium.

1.2 high level control technology

Gymnasium display screen is a large-scale facility serving competitive projects. In its control technology, it needs to integrate the advanced technologies of the industry, such as static latch technology, white balance technology, nonlinear correction technology, high gray technology, color uniformity technology, video processing technology, fast moving image compensation technology, full braking control technology, etc.

1.3 quality assurance of design, installation and commissioning

Gymnasium displays are generally used in sports competitions and large-scale activities. Any fault and error will have a great impact. Therefore, stable project quality is the objective requirement of users. In order to meet the requirements and ensure the stable and reliable operation of the display screen, it is necessary to take quality as the guide in the design, production, installation, commissioning and delivery, and use an effective quality assurance system to ensure the whole production process.

The design, manufacture, installation, commissioning and operation of LED electronic display screen must be matched with the site plane and section of the gymnasium, coordinate the overall effect, and fully consider the power supply structure of the site. Generally speaking, ensure that the power supply works normally within the range of (220 ± 22) V and (380 ± 38) v. In addition, all control equipment shall be centralized in one control room, and the access port of control equipment shall be reserved at the referee’s seat of various competitions.

For gymnasiums with large venues and more than 5000 spectator seats, two LED electronic displays with an area of 40m2 can be built. One screen is divided into clock area, full-color area and double primary color area, and the other screen can be divided into clock area and double primary color area. This not only ensures the satisfaction of various functions, but also ensures the rational use of funds. If the funds are sufficient and it is possible to host large-scale gatherings or competitions in the future, the two screens can also be made into full-color screens, so that the playback effect will be more realistic and the atmosphere will be more intense.

2. Demand analysis of LED display content

The multifunctional modern gymnasium can be used not only to hold various sports competitions, but also to hold various large-scale literary and artistic activities and gatherings. Therefore, the requirements for the display content of the display screen can be summarized as rich, diverse and real-time, as follows:

2.1 requirements for live broadcasting of video images

Sports competitions, artistic performances and large-scale activities held in the gymnasium can be broadcast live through the electronic display screen, and have special effects such as panoramic view, close-up, slow motion, flash jump, drag image, nostalgic film and so on.

2.2 compatibility requirements of multiple input modes

The display screen of the gymnasium can not only carry out true color real-time live broadcasting by the camera, but also broadcast TV and satellite TV programs, play VCD, DVD, LD and various self-made video signal programs, support pal, NTSC and other systems, and the display content can also be various graphic information on the computer, various information from the internal information network or public information network of the gymnasium; It has the functions of superimposing text information on the TV picture and superimposing text, pictures, animation, etc. outside the video image; Play relevant background pictures during artistic performances and large gatherings.

2.3 demand for rich and colorful graphic information broadcasting

On the one hand, the gymnasium display screen can be used for live broadcasting of video images, on the other hand, it can display news releases, important notices and slogans, and the display screen can display words, patterns, patterns, animation, etc; It has the function of playing pictures and words with different proportions on the left and right at the same time.

2.4 demand for multiple broadcasting modes

It shall have the functions of translation, scrolling, rotation, scratching, screen pulling, single / multi line translation, single / multi line up / down, left / right pull, up / down, page turning, moving, rotation, shrinking, zooming in, flashing, window opening, etc. in order to host large-scale international sports events and activities, the display screen shall be compatible with national languages, such as Chinese, English, numbers and various characters, There are a variety of fonts and font choices, and the text can be scaled steplessly.

2.5 demand for plug-in advertising and display mode

As the most eye-catching display media in the gymnasium, the full-color display screen of the gymnasium is bound to become the first choice for the publicity of the majority of enterprises. Therefore, in terms of the demand for display content, we should also fully consider the needs of advertising of various businesses, so that the display screen can quickly and conveniently insert enterprise advertising to meet the needs of the majority of customers.

2.6 need for sports competition information and sports performance announcement

The release of sports competition information and results is the basic requirement for the electronic display screen to realize its display function. Therefore, the use requirements of various sports competitions should be fully considered in the design. The competition information, such as basketball, volleyball, badminton, table tennis, weightlifting, gymnastics and other competition information, can be released. The country name, team name, name Athlete number and performance record; Various real-time information can be displayed in the competition, such as the name of the competition team, score, scorer, replacement, name, number and times of players punished for foul, etc.

2.7 clock display requirements

Another display function of the gymnasium display screen is required to have an accurate clock display function. The clock display function includes Beijing time, competition clock and countdown display. Different competition clocks can be set according to different competition events and referee rules, and timing pause, reset, fast adjustment, slow adjustment, etc. can be easily controlled.

2.8 requirements for synchronous audio playback

The gymnasium display screen has an audio interface, which can be combined with the sound in the gymnasium to achieve the audio-visual synchronization function.

High brightness. Since the gymnasium competitions and activities are carried out during the day or under strong lights, the display screen must achieve high brightness and have a clear and visible effect under strong light.

Moisture proof, anti-corrosion and heat dissipation. Due to the large volume, fixed installation and more wiring of the display screen, special storage methods cannot be made. In addition, in order to adapt to the humid, rainy and high-temperature weather that may occur in the installation area, moisture-proof, anti-corrosion and good heat dissipation measures must be considered in design and construction to ensure stable and reliable use. At the same time, the dust prevention treatment of the display screen shall be done well.

3. Demand analysis of LED display referee system

The normal service function of the display screen can only be completed with the support of the referee and the perfect software. The referee is composed of a timer and a scorer. The software should be a complete software package, which must fully support different sports competitions and referee rules.

4. Demand analysis of LED display systematization

The display screen of gymnasium is an important part of the electronic information system of gymnasium, so the display screen and control system are systematic projects. The computer in the control room, the stadium, the referee, the referee and the news center of the gymnasium are integrated to efficiently serve the whole sports competition. It is a systematic design, and this part is only one of the components for the whole large-scale sports activity network. Therefore, the compatibility should be fully considered in the whole system design, and all interfaces adopt standard interfaces, Form a systematic facility to share information resources with the network.

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