Interactive LED display screens are currently widely used in video game cities, large shopping malls and other places, but when it comes to its working principle, many sellers who have been engaged in LED display screens for many years must not know. So, what is the principle of interactive LED display screens? ?What is the difference between it and the traditional led display? Follow this question, and as a professional manufacturer of interactive floor tile screens, we will give you a wonderful analysis.
To understand the interactive floor tile screen, we must first know what a floor tile screen is. Just like before we learn multiplication, we will learn addition first.
What is a floor tile LED display?
The LED floor tile screen is an LED display specially designed for ground display. It has good load-bearing and shock-proof functions. Special design has been made in terms of load-bearing, protection performance, and heat dissipation performance, so that it can adapt to high-intensity trampling. And can run for a long time.
In fact, the led floor tile screen is a new type of digital display device specially designed for indoor exhibition halls, and its applications include various evening parties, large stages, discos and other fields. It has a flexible modular design, which can realize multi-directional application of floor, ceiling and T stage.
Because the video effect of the LED floor tile display is preset in the computer, it is only a simple control output, and it will not have any interaction with the people on the stage, and the display method is monotonous. With the development of touch technology in recent years, luminous floor tiles that interact with people have appeared, which can not only bring visual enjoyment to users, but also present real-time picture effects by following the activities of the human body, enhancing the interest of the scene.
At present, although the domestic LED floor tile screen can achieve the display effect by pre-designing the video, there are too many uncertain factors in the scene of many exhibition activities, and special staff are needed to carry out the on-site video. Playing as well as tweaking, this undoubtedly requires a lot of resources. There is no way to achieve timely and accurate, but the interactive floor tile screen solves this problem very well.
After understanding some basic knowledge of the LED floor tile display, let’s take a look at how the LED floor tile screen achieves the interactive effect.
The principle of interactive floor tile screen LED display:
① Control logic
The LED module is embedded with a sensor chip, which is distributed according to the average rules of rows and columns. The working principle is to transmit the circuit signal of the passing object back to the screen control center through the infrared radar sensor chip inside the screen body, and the screen body according to the returned signal The track renders the effect on the screen. For example, the commonly used materials are flowers under the feet. When people walk over, the flowers will bloom according to the trajectory of people’s footsteps, fish and water interaction, forest walks, etc.
② Realize the principle block diagram of LED induction floor tile screen
The specially processed video source is firstly controlled by the special playback software in the computer through the LED display screen, and the signal output of DVI/HDMI is Signal distributor, the distribution shows the complete picture of playback.
- ① Radar sensor
- ② Infrared induction
- ③ Gravity induction
The most common interactive method is infrared sensing, because this interactive method has a better user experience. Infrared sensing uses the principle of infrared imaging, as long as objects with temperature can be sensed, so the overall accuracy is relatively high. .
Gravity induction has been widely used on mobile phones and some mechanical equipment. Like the previous machines that use chainsaws to saw wood, without gravity induction, when the machine is tilted, it is easy to cause safety hazards. After adding gravity induction , If the machine tilts, it will stop automatically, thus greatly improving the safety.
However, on the LED display screen, it is not used much at present, mainly for two reasons. First, the LED floor tile screen is very bulky as a whole, and a large energy supply is required to drive the display screen to produce a gravity sensing effect. Second, , Gravity induction needs to leave a certain distance from the ground, and the LED floor tile screen is too heavy as a whole, after leaving the ground, even a slight shaking will generate a very large amount of energy, and it is very easy to cause safety hazards if the control is not good.
In contrast, the safety of radar sensing is much higher, but it is used less. The reason for this is that the penetrating power of radar is relatively weak (here simply refers to the technology used on the LED display), The signal is susceptible to interference. If the signal is interfered or the distance is far away, the interactive effect cannot be produced.
When the LED induction floor tile screen interacts with the audience, the position sensor on the display screen senses and detects the interactive point of the interactive audience, and the positioning controller of the floor tile screen transmits the position coordinate information of the interactive point back to the LED display control computer. , After the control computer receives the position coordinate information, the control software can transmit it back to the LED display control computer according to the received coordinate information.
After the control computer receives the position coordinate information, the control software can according to the received coordinate information, To call different program files and video files for playback, the screen displayed by the LED induction floor tile screen will have corresponding real-time changes to achieve the effect of real-time interaction.
We can know from the realization conditions and working principle of the LED interactive floor tile display that compared with the conventional LED floor tile display, the main differences are as follows:
1. The direction of data transmission is different. The traditional LED display is one-way transmission, and the LED interactive induction floor tile screen is two-way transmission.
2. The control software is different. The traditional LED display is on the playback side, and then the video source is played. The interactive LED floor tile screen needs to receive the interactive point position coordinate information returned from the display screen, and then call different screens according to the passed coordinate information.
3. The display end of the LED screen is different. The traditional LED display only plays a display role, and the interactive LED floor tile screen also needs to be sensed, collected, and transmitted.