The interactive floor screen is an application branch of the LED display field. Through innovative design, this product is widely used in stage display, commercial application, shop decoration, etc. The emergence of the interactive floor tile screen provides a creative design for various performances. A more novel expression method is a beneficial supplement to the current display equipment. As the problem of product homogeneity in the LED display market is becoming more and more prominent, the emergence of interactive floor tile screens provides a reference for the innovative application of LED in my country, and interactive floor screens have considerable market prospects.
Before the emergence of interactive floor screens, similar products on the market, luminous floor tiles, were also used in commercial decoration and other aspects. Luminous floor tiles can display patterns on the floor tiles. This kind of luminous floor tiles generally relies on the built-in single-chip microcomputer to control the display of simple patterns or can be controlled by connecting to a computer so that the entire stage can display changing effects. However, these patterns or effects are all preset in the single-chip microcomputer or computer, and are simply output according to the control of the program, without any interaction with the people on the stage. With the development of touch technology in recent years, luminous floor tiles that can interact with people have appeared, and their novel and interesting experience methods are favored by the market. The realization principle of the interactive floor tile screen is to set pressure sensors or capacitive sensors or infrared sensors on the floor tiles. When people interact with the floor tile screen, these sensors sense the position of the person and feed back the trigger information to the main controller. Then the main controller outputs the corresponding display effect after logic judgment.
Common interactive floor screen control methods include: offline control method, Ethernet online control method, and wireless distributed control method. According to different engineering applications, corresponding floor screen products have been produced and supporting effect production software has been designed. Using the software ” Seekway Dance Player”, the user can control the floor tile screen to enter the interactive mode of different patterns (separately or simultaneously realize the induction pattern and induction sound function) or play full-color images as a screen. Multiple sets of gorgeous built-in effects can be generated with one click, and effects in different formats can also be intercepted or imported; with powerful text editing functions, text effects can be edited as needed; brightness and speed can be adjusted in real time, and the brightness and speed can be flexibly adjusted according to the application;
Users can also carefully set or modify engineering parameters and wiring through installation settings, which is simple and fast.
Off-line control and Ethernet online control mode interactive floor screen control system is composed of multiple subsystems, each subsystem includes a sensor detection unit evenly distributed on the circuit board, LED display unit, detection processing unit and display control unit, The sensor detection unit is connected to the input end of the detection processing unit, the LED display unit is connected to the output end of the display control unit , and there is also a data processor independent of the subsystem, Its output interface is connected to the input interface of the display control unit of the subsystem, and its input interface is connected to the output interface of the detection processing unit, as shown in Figure 1. In the actual product, each subsystem is a floor screen module. When connecting, the subsystems are connected in series through the communication interface and the data processor.
It only needs to be connected to one of the subsystem communication interfaces, which is designed to make wiring easier.
When the off-line control mode is adopted, the off-line controller acts as a data processor, on the one hand, it is necessary to receive the information transmitted back from all sensor detection units. After data fusion processing, the location of the triggered floor screen can be known. Then read the data files stored in mobile storage devices such as CF card and SD card to realize the corresponding effect display. The design of the off-line controller is composed of single-chip microcomputer with strong data processing ability and its peripheral circuit.
When the Ethernet online control method is used, the calculator acts as a data processor. Since the computer has more powerful data processing capabilities, this control method can modify the display effect at any time and realize unified monitoring of the large stage in real time. Modules can be expanded in a cascaded manner, which has great advantages in large-scale interactive floor screen engineering applications.
The design method of the interactive floor tile screen system based on wireless distributed control, compared with the previous system design, the control method works in a wireless manner, which saves the trouble of on-site wiring, and adopts distributed control at the same time, the work of the data processing part is distributed to the control processors of each floor tile screen, and the data processing part is completed by these processors, so the main controller part does not need powerful data processing capabilities. In large-scale applications, it is not necessary to use a computer as a data processing center. This control method can greatly reduce the cost of system design.
The working process and principle of the wireless distributed control floor screen system are described as follows:
After the sensing point of the floor tile screen is triggered, the sub-controller connected to it will send the location ID information of the trigger point to the main control in a wireless manner;
After the master control receives the location information, it synchronizes the location information to all sub-controllers by broadcasting;
The sub-control will transmit this information to the processor inside each floor tile screen, so each floor tile screen module will automatically calculate the position distance information between itself and the trigger point, and then judge the display effect it should display;
The whole system will use a special synchronization frame to realize the system has a unified time base, so each floor tile screen module can accurately calculate when it should display the corresponding effect, and then can realize the seamless connection and perfect display of the entire trigger effect .
Summarize:
(1) The off-line control method, due to the limited data processing capability of the main controller, is mainly used in desktop interactive sensing, suitable for relatively small applications such as bar counters and KTV room countertops.
(2) The Ethernet online control method can be applied to large-scale stage control and other occasions. Since the computer is used as the data processing center, therefore, this control method can be more convenient to modify the display effect at any time and can realize unified monitoring of the large stage in real time.
(3) The wireless distributed control method is different from the above two wired data transmission methods. This method realizes key data transmission through wireless. In actual engineering application, it not only improves the efficiency of on-site layout, but also reduces labor costs and wire costs, which has more obvious advantages in large-scale applications. At the same time, in terms of data processing, different from the above two centralized processing methods, the wireless distributed control method disperses the work of the data processing part to the control processors of each floor tile screen, and these processors cooperate to complete the display of the effect. Therefore, the main controller does not need powerful data processing capabilities, and it is not necessary to use a computer as a data processing center in large-scale stage applications, which can further reduce the application cost of the overall system.
Post time: Jul-28-2016
