▲The slogan “Welcome National Day, speak civilization, and create a new style!†appears on the display screen being debugged.
Dongfang Net September 16th news: Yesterday, the huge LED electronic display on both sides of the Monument to the People's Heroes in Tiananmen Square was completed and entered the commissioning stage. At this point, with the addition of two LED electronic displays on both sides of Tiananmen Square, all four screens are completed and are expected to be officially put into use in the near future.
Mr. Tan, vice president of Beijing Liard Electronic Technology Co., Ltd. (hereinafter referred to as Liard), who is responsible for the production of three display screens, revealed that the display has waterproof, flame retardant and anti-lightning functions. The display on both sides of the square will play the National Day parade in real time.
Two screens are removed after the celebration
Yesterday afternoon, next to the giant LED electronic display on both sides of the Monument to the People's Heroes, the staff was conducting the final commissioning. On the two screens, slogans such as “Welcome National Day, Civilization, and New Wind!†are interspersed with static pictures and video clips.
Liard Company undertakes the production of electronic displays on the east and west sides of the Tiananmen Gate and on the west side of the Monument to the People's Heroes. Mr. Tan, the company's vice president, introduced that the display screens on both sides of the monument were produced by different companies, but the area was 250 square meters. The final debugging before acceptance is to harmonize the brightness, color and broadcast screen of the two sides.
At 7 o'clock last night, the display began to play natural scenery, urban style short films. The two sides of the picture play synchronously and coordinate. Coupled with clear sound effects, many visitors have stopped to wait and see. The staff of the Liard Company said that after the 60th anniversary celebration, the two screens will be temporarily removed, but in the next three years, every major festival will appear on both sides of the monument on time. The main function is to slogan.
Display marked with Chinese manufacturing
The two LED displays that entered the commissioning phase were marked with four words: Made in China. According to the relevant person in charge of the production enterprise, 70% of the devices on these two displays are made in China. As early as the tendering stage, it was clearly required that the illuminating crystals of the lamps in the two display screens must be made in China. "In the days of the 60th anniversary of the motherland, we were very proud to erect an electronic display made in China."
It is understood that Liard has undertaken the Olympic Games, the Spring Festival Gala and the 50-year National Day electronic display production project, which is rich in experience. This time, taking on the task of making three electronic displays in the square, the work of more than 1,000 square meters took only one month to complete production, installation and commissioning. According to the staff, the display in the 60-year celebration was improved compared to 10 years ago, and the energy consumption was reduced.
CCTV sends a signal to play the parade
The staff said that as early as the bidding stage of the project, it has been confirmed that the display screens on both sides of Tiananmen Square will appear as a highlight of the 60th National Day celebration. These two large screens are 367 square meters each. During the National Day celebration, CCTV sent a signal to play the dynamic video of the entire parade scene in real time. Through these two displays, the audience at Tiananmen Tower and the viewing platform will be able to see the entire celebration parade. At the same time, the relevant media will relay the content of the display.
According to the staff, all the devices used in the two screens, such as lamps and driver chips, are among the best in the world. In order to ensure that the display during the procession is infallible, the two displays are powered by three channels: that is, in addition to using the two-way power supply system, there is also an uninterrupted power supply for the battery pack. Switching between pictures is a seamless switching without delay.
Screen can cope with thunderstorm weather
According to the staff of the Liard Company, the electronic display screen itself has functions such as waterproofing and flame retardant. In order to prevent the impact of special weather and activities on the electronic display screen, the relevant units have already dealt with the lightning protection such as lightning strikes to ensure that the electronic display can easily cope with the thunderstorm weather and the fireworks display during the celebration. In addition, the rear side of the electronic display is equipped with exhaust and heat-dissipating equipment, so the electronic display that people see is very thick. The staff introduced that there are corresponding fire protection facilities in the vicinity of the electronic display to ensure that the company is fully prepared to deal with sudden technical problems.
Mr. Tan revealed that as early as 10 years ago, on the 50th anniversary of the founding of the People’s Republic of China, the first outdoor LED display screen that can be continuously played on mobile by Liard was made by the Liard Company. The No. 45 float of the "First Productivity" won the praise. Compared with the electronic display that appeared in the 50th anniversary celebration, the two displays in the 60-year celebration adopted the leading correction technology in China. The brightness correction technology ensures the uniformity of the brightness of the whole screen, and the color correction technology ensures the high quality color reproduction during video playback. In order to cooperate with the TV station broadcast, the scanning rate of the LED display screen is nearly 10 times 10 years ago, reaching 2000 Hz, fully ensuring that the screen does not shake when the TV station broadcasts, photographs and images.
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