CN101206820A - Distributed Wireless LED Display System - Google Patents

Abstract

Translated fromChinese

本发明属于无线传输和LED显示控制技术领域，具体为一种分布式无线LED显示系统。该显示系统由一个无线控制器和若干个无线显示牌组成。无线显示牌在使用前预置好待显示图片信息，每个无线显示牌显示整个图片的一个像素点，所有的无线显示牌共同组成一幅完整图片。使用时接收无线控制器发射的同步控制信号，启动待显示图片，从而达到各个无线显示牌同步显示预存图片的效果。该系统采用了分布式设计和集中无线控制，其应用领域极为广泛，例如大型运动会、演唱会等的观众席动态图形显示，运动员方阵的动态展示等。

The invention belongs to the technical field of wireless transmission and LED display control, in particular to a distributed wireless LED display system. The display system consists of a wireless controller and several wireless display boards. The wireless display board presets the image information to be displayed before use, each wireless display board displays a pixel of the entire picture, and all the wireless display boards together form a complete picture. When in use, it receives the synchronous control signal transmitted by the wireless controller and starts the picture to be displayed, so as to achieve the effect of synchronously displaying the pre-stored picture on each wireless display board. The system adopts distributed design and centralized wireless control, and its application fields are extremely wide, such as dynamic graphic display of audience seats in large-scale sports games and concerts, dynamic display of athletes' phalanx, etc.

Description

Translated fromChinese

分布式无线LED显示系统Distributed Wireless LED Display System

技术领域technical field

本发明属于无线传输和LED显示控制技术领域，具体为一种分布式无线LED显示系统。The invention belongs to the technical field of wireless transmission and LED display control, in particular to a distributed wireless LED display system.

背景技术Background technique

近年来，随着中国经济、文化、体育事业的飞速发展，各类大型文体、科技盛会不断举行，这些活动的举行，对会场现场宣传手段提出了各种各样新的需求。其中，由观众参与的各种现场演示活动还停留在落后的固定演示模式阶段，即由每名观众拿着固定颜色的发光棒或彩旗显示固定的组合图形，而且需要事先彩排和现场指挥才能达到显示特定组合图形的目的。这种方式已经难以满足现在的各类盛会对高科技的需求。In recent years, with the rapid development of China's economy, culture, and sports, various large-scale cultural, sports, and scientific and technological events have been held continuously. The holding of these events has put forward various new demands for on-site publicity methods. Among them, the various on-site demonstration activities participated by the audience are still in the backward fixed demonstration mode stage, that is, each audience holds a fixed-color luminous stick or colorful flag to display a fixed combination of graphics, and requires prior rehearsal and on-site command to achieve Displays the purpose of a particular composite graphic. This method has been difficult to meet the high-tech needs of various events.

发明内容Contents of the invention

本发明的目的在于提出一种便于现场指挥显示大型组合图案的LED显示系统。在使用的时候，只需众多的参与者手持各自的无线LED(发光二极管)显示牌，不需要任何的排练和动作，即可动态显示各种预存的图形，使用极为方便，可应用于各种大型运动会、演唱会等的观众席动态图形显示及运动员方阵的动态展示等，具有极其重要的实用价值。The purpose of the present invention is to provide an LED display system that is convenient for on-site command and display of large-scale combination patterns. When in use, only a large number of participants need to hold their own wireless LED (light-emitting diode) display boards, and various pre-stored graphics can be dynamically displayed without any rehearsal or action. It is extremely convenient to use and can be applied to various It has extremely important practical value for the dynamic graphic display of the auditorium and the dynamic display of the athlete's phalanx in large-scale sports games and concerts.

本发明提出的LED显示系统，由一个无线控制器和若干个无线LED显示牌组成，如图1所示。无线LED显示牌在使用前预置好待显示图片信息，每个无线LED显示牌显示整个图片的一个像素点，所有的无线LED显示牌共同组成一幅完整图片。使用时接收无线控制器发送的同步控制信号，启动待显示图片，从而达到各个无线LED显示牌同步显示预存图片的效果。The LED display system proposed by the present invention is composed of a wireless controller and several wireless LED display boards, as shown in FIG. 1 . The wireless LED display board presets the picture information to be displayed before use. Each wireless LED display board displays a pixel of the entire picture, and all the wireless LED display boards together form a complete picture. When in use, it receives the synchronous control signal sent by the wireless controller and starts the picture to be displayed, so as to achieve the effect of synchronously displaying the pre-stored picture on each wireless LED display board.

本发明所述的无线控制器由单片机、实时时钟、控制按键、显示屏、无线发射模块、射频功率放大模块和天线等部分组成，其结构如图2所示。其中，采用8位单片机作为核心处理器，完成信号处理、逻辑判断、显示控制、收发控制及中断响应功能；The wireless controller of the present invention is composed of a single-chip microcomputer, a real-time clock, control buttons, a display screen, a wireless transmission module, a radio frequency power amplification module and an antenna, and its structure is shown in FIG. 2 . Among them, 8-bit single-chip microcomputer is used as the core processor to complete signal processing, logic judgment, display control, sending and receiving control and interrupt response functions;

实时时钟产生时钟信号，传递给单片机，用于显示时间及定时控制；The real-time clock generates a clock signal and transmits it to the microcontroller for displaying time and timing control;

控制按键与单片机的IO口相连接，包括开关按键、上、下、左、右四个方向键，时间设置键及图片切换键，其作用分别是：开关按键用于打开或关闭发射机，上、下、左、右四个方向键用于设置时间时的时间数字调整及切换图片时的图片选择等，时间设置键用于时间设置功能的进入或退出，图片切换键用于快速图片切换功能的进入或退出；The control buttons are connected with the IO port of the single-chip microcomputer, including switch buttons, four direction keys up, down, left and right, time setting keys and picture switching keys. , down, left and right direction keys are used to adjust the time number when setting the time and picture selection when switching pictures, etc. The time setting key is used to enter or exit the time setting function, and the picture switching key is used for fast picture switching function entry or exit;

显示屏采用LCD显示屏，由单片机驱动，实时显示时间及当前分布式LED显示牌显示的整体图片；The display screen adopts LCD display screen, which is driven by a single-chip microcomputer, real-time display time and the overall picture displayed by the current distributed LED display board;

无线发射模块的数字信号输入端与单片机的IO口相连接，接收单片机的控制指令，经过调制发射出去，以控制分布式无线LED显示牌动作；The digital signal input terminal of the wireless transmitter module is connected to the IO port of the single-chip microcomputer, receives the control command of the single-chip microcomputer, and transmits it after modulation to control the action of the distributed wireless LED display board;

射频功率放大模块及天线共同构成发射机的末端电路。其作用是把无线发射模块产生的调制信号放大，并且经过天线发射到空中，增大信号的辐射范围，提高整个系统控制的可靠性。The RF power amplification module and the antenna together constitute the terminal circuit of the transmitter. Its function is to amplify the modulated signal generated by the wireless transmitting module, and transmit it into the air through the antenna, so as to increase the radiation range of the signal and improve the reliability of the entire system control.

本发明所述的无线LED显示牌由单片机、无线接收解码模块和若干LED组成，如图3所示。其中，采用8位单片机作为核心处理器，完成显示信息预存、信号处理、逻辑判断、显示控制、接收控制及中断响应功能；The wireless LED display board of the present invention is composed of a single-chip microcomputer, a wireless receiving decoding module and several LEDs, as shown in FIG. 3 . Among them, 8-bit single-chip microcomputer is used as the core processor to complete the functions of display information pre-storage, signal processing, logic judgment, display control, receiving control and interrupt response;

无线接收解码模块在单片机的控制下实时监听无线控制器的同步控制信号，经过解码、校验后把同步控制信号传递给单片机，由单片机经过逻辑判断后启动相应待显示图形，即LED的亮、暗或灰度控制。The wireless receiving and decoding module monitors the synchronous control signal of the wireless controller in real time under the control of the single-chip microcomputer, and transmits the synchronous control signal to the single-chip microcomputer after decoding and verification, and the single-chip microcomputer starts the corresponding graphics to be displayed after logical judgment, that is, LED lights, Dark or grayscale control.

本发明的积极效果：Positive effect of the present invention:

本发明将无线传输和分布式LED显示控制相结合，提供了一种分布式的无线LED显示系统。该系统由于采用了分布式设计和集中无线控制，在使用的时候，只需众多的参与者手持各自的无线LED显示牌，不需要任何的排练和动作，即可动态显示各种预存的图形，使用极为方便，可应用于各种大型运动会、演唱会等的观众席动态图形显示及运动员方阵的动态展示等，具有极其重要的实用价值。The invention combines wireless transmission and distributed LED display control to provide a distributed wireless LED display system. Due to the distributed design and centralized wireless control of the system, when in use, only a large number of participants need to hold their own wireless LED display boards, and various pre-stored graphics can be dynamically displayed without any rehearsal or action. It is extremely convenient to use, and can be applied to the dynamic graphics display of auditoriums and the dynamic display of athletes' squares in various large-scale sports games and concerts, etc., and has extremely important practical value.

附图说明Description of drawings

图1为系统示意图。Figure 1 is a schematic diagram of the system.

图2为无线控制器示意图。FIG. 2 is a schematic diagram of a wireless controller.

图3为无线LED显示牌示意图。Fig. 3 is a schematic diagram of a wireless LED display board.

图4为无线控制器主界面图。Figure 4 is the main interface diagram of the wireless controller.

图5为无线控制器图片切换界面图。Figure 5 is a picture switching interface diagram of the wireless controller.

图6为无线LED显示牌示意图程序流程图。Fig. 6 is a schematic flow chart of the program of the wireless LED display board.

图7为无线控制器程序流程图。Figure 7 is a flow chart of the wireless controller program.

图中标号：1是发射机，2是LED显示牌，3是单片机，4是实时时钟，5是控制按键，6是LCD显示屏，7是无线发射模块，8是射频功放模块，9是天线，10是单片机，11是无线接收模块，12是LED点阵，13是电源。Numbers in the figure: 1 is the transmitter, 2 is the LED display board, 3 is the single-chip microcomputer, 4 is the real-time clock, 5 is the control button, 6 is the LCD display, 7 is the wireless transmission module, 8 is the radio frequency power amplifier module, and 9 is the antenna , 10 is a single-chip microcomputer, 11 is a wireless receiving module, 12 is an LED dot matrix, and 13 is a power supply.

具体实施方式Detailed ways

一、硬件设备1. Hardware equipment

无线控制器采用STC的STC89C052单片机作为核心处理器，该单片机属于51系列单片机，兼容性好，程序易于移植；具有ISP/IAP功能，在系统可编程/在应用可编程，无需编程器/仿真器，调试或烧录程序非常方便；集成有内部看门狗电路，工作极为可靠；价格低廉，适合批量生产产品。实时时钟芯片采用DS1302芯片，该芯片具有直流电源、电池双供电系统，可由电池供电，功耗极低，一片锂电池供电可工作1年以上；控制按键采用橡胶薄膜按键，反映灵敏可靠，外观美观；显示屏采用并口LCD显示屏，分辨率128×64，能够满足时钟及图形显示功能；无线发射模块的选择基于降低成本考虑，采用315无线数传模块；为了扩大信号的控制范围，在发射模块的输出端增加了射频功率放大模块，使发射机的发射功率达到1W以上，并且加装天线，从而大幅度增加发射机的控制范围，提高系统的可靠性。The wireless controller uses STC's STC89C052 single-chip microcomputer as the core processor. This single-chip microcomputer belongs to the 51 series single-chip microcomputer, has good compatibility, and the program is easy to transplant; it has ISP/IAP function, programmable in the system/programmable in the application, no need for a programmer/emulator , It is very convenient to debug or burn the program; integrated with the internal watchdog circuit, the work is extremely reliable; the price is low, suitable for mass production products. The real-time clock chip adopts DS1302 chip, which has a DC power supply and battery dual power supply system, which can be powered by batteries, with extremely low power consumption, and a lithium battery can work for more than 1 year; the control buttons use rubber membrane buttons, which are sensitive and reliable, and have a beautiful appearance ;The display adopts a parallel LCD display with a resolution of 128×64, which can meet the clock and graphic display functions; the choice of the wireless transmission module is based on cost reduction considerations, and a 315 wireless data transmission module is used; in order to expand the control range of the signal, the transmission module A radio frequency power amplifier module is added to the output end of the transmitter, so that the transmitting power of the transmitter can reach more than 1W, and an antenna is installed, thereby greatly increasing the control range of the transmitter and improving the reliability of the system.

无线LED显示牌采用STC的STC12LE2052单片机作为核心处理器，该单片机工作电压低、范围大(2.4～3.8V)，可直接用纽扣锂电池供电；具有ISP/IAP功能，在系统可编程/在应用可编程，无需编程器/仿真器，调试或烧录程序非常方便；集成有内部看门狗电路，工作极为可靠；价格低廉，适合批量生产产品；LED点阵采用RGB三色LED，该LED具有RGB三种颜色，由单片机端口控制，可产生多种组合颜色；无线接收解码模块采用315接收模块，该模块集成由接收解调电路和解码芯片，可直接将接收到的控制器信号解调并解码为数字信号，然后传递给单片机的IO端口，由单片机进行信号处理及逻辑判断，从而实现同步控制。The wireless LED display board uses STC's STC12LE2052 single-chip microcomputer as the core processor. The single-chip microcomputer has a low operating voltage and a wide range (2.4~3.8V), and can be directly powered by a button lithium battery; it has ISP/IAP functions, which can be programmed in the system/in application Programmable, without programmer/emulator, very convenient to debug or burn programs; integrated with internal watchdog circuit, extremely reliable work; low price, suitable for mass production products; LED dot matrix adopts RGB three-color LED, the LED has RGB three colors, controlled by the single-chip port, can produce a variety of combined colors; the wireless receiving and decoding module uses a 315 receiving module, which integrates a receiving demodulation circuit and a decoding chip, which can directly demodulate the received controller signal and It is decoded into a digital signal, and then transmitted to the IO port of the single-chip microcomputer, and the single-chip microcomputer performs signal processing and logic judgment, thereby realizing synchronous control.

二、软件控制流程2. Software control process

软件包括无线控制器程序和无线LED显示牌程序。无线控制器程序界面包括无线控制器主界面和图片切换界面，分别如图4和图5所示。在控制器使用前，将程序固化到单片机存储器中，包含了运行程序和待显示的图片信息。按开关按键后，系统启动，进入运行状态。首先进入主菜单待机模式，显示系统名称及时间、图片切换两个图标。具体操作分为手动控制和定时控制两种控制模式：The software includes wireless controller program and wireless LED display board program. The wireless controller program interface includes the wireless controller main interface and the picture switching interface, as shown in Figure 4 and Figure 5 respectively. Before the controller is used, the program is solidified into the single-chip memory, including the running program and the image information to be displayed. After pressing the switch button, the system starts and enters the running state. First enter the standby mode of the main menu, and display the system name and time, and two icons for picture switching. The specific operation is divided into two control modes: manual control and timing control:

手动：按图片切换键进入图片切换界面，图片编号为1、2、3、4...n，由于显示屏只能显示4行字符，故采用滚动方式显示；按上、下方向键移动光标以选择待显示图片，按右方向键可预览选定的图片，按左方向键确定将选定的图片同步指令发出，以控制分布式LED显示牌的同步动作，从而显示该幅图片；显示完毕后可再次按图片切换键，推出图片切换界面，结束控制；Manual: Press the picture switching key to enter the picture switching interface. The picture numbers are 1, 2, 3, 4...n. Since the display can only display 4 lines of characters, it is displayed in a scrolling manner; press the up and down direction keys to move the cursor To select the picture to be displayed, press the right arrow key to preview the selected picture, press the left arrow key to confirm and send the selected picture synchronization command to control the synchronous action of the distributed LED display board, so as to display the picture; the display is completed After that, you can press the picture switching key again to launch the picture switching interface and end the control;

时间校准：在进行定时控制设置前，需要完成时间校准；开机后，进入主菜单画面，按时间设置键，进入时间设置状态，配合上、下、左、右四个方向键，可完成时间校准，然后再按时间设置键退出该状态，系统进入主界面待机状态；Time calibration: Before timing control setting, time calibration needs to be completed; after power on, enter the main menu screen, press the time setting key to enter the time setting state, and cooperate with the up, down, left and right four direction keys to complete the time calibration , and then press the time setting key to exit this state, and the system enters the main interface standby state;

定时控制：按图片切换键进入图片切换界面，图片编号为1、2、3、4...n，当光标停留在某一幅待显示的图片编号下时，按时间设置键，进入图片定时切换设置状态，设置该幅图片待显示的起始时间，设置完毕再按时间设置键，存下设置信息，完成该幅图片的待显示时间设定；同样，按右方向键可预览选定的图片。然后，移动光标到下一幅图片编号下，采用同样的操作完成下一幅图片的显示设定。设置完成后，控制器在定时器的控制之下，会自动运行图片显示控制；Timing control: press the picture switching key to enter the picture switching interface, the picture numbers are 1, 2, 3, 4...n, when the cursor stays under a certain picture number to be displayed, press the time setting key to enter the picture timing Switch the setting state, set the start time of the picture to be displayed, press the time setting key after setting, save the setting information, and complete the setting of the picture to be displayed time; similarly, press the right direction key to preview the selected picture. Then, move the cursor to the next picture number, and use the same operation to complete the display setting of the next picture. After the setting is completed, the controller will automatically run the picture display control under the control of the timer;

控制指令发送：无论手动控制还是定时控制，当选择好待显示的图片后，需要把该幅图片编码发送出去，由LED显示牌接收并完成解码和显示动作。Control instruction sending: Regardless of manual control or timing control, when the picture to be displayed is selected, the picture needs to be coded and sent out, and the LED display board will receive it and complete the decoding and display actions.

整个控制过程的流程图如图7所示。The flow chart of the entire control process is shown in Figure 7.

无线LED显示牌程序流程图如图6所示：The program flow chart of the wireless LED display board is shown in Figure 6:

首先，使用前烧录程序到单片机中，包含了运行程序和待显示的图片信息。其中的图片信息和控制器中的图片信息一一对应；启动运行后，采用中断方式控制，使用时，启动开关，单片机和无线接收模块进入待机状态，实时监听控制器发射的控制信号，当检测到控制信号并且解码无误后，传递给单片机，单片机根据控制信号所包含的图片编码，查询到待显示的图片信息，驱动LED显示，实现分布式LED图片的动态显示。First, burn the program into the microcontroller before use, including the running program and the image information to be displayed. The picture information in it corresponds to the picture information in the controller one by one; after the start-up operation, the interrupt mode is used for control. After the control signal is received and decoded correctly, it is passed to the single-chip microcomputer. The single-chip microcomputer queries the picture information to be displayed according to the picture code contained in the control signal, drives the LED display, and realizes the dynamic display of the distributed LED picture.

Claims (5)

1. distributed wireless LED display system, it is characterized in that this display system is made up of a wireless controller and several wireless LED display boards, the wireless LED display board presets pictorial information to be shown before use, each wireless LED display board shows a pixel of whole picture, the common width of cloth full picture of forming of all wireless LED display boards; Receive the synchronous control signal that wireless controller sends during use, start picture to be shown, thereby reach the effect that each wireless LED display board shows the picture that prestores synchronously.

2. distributed wireless LED display system according to claim 1, it is characterized in that described wireless controller is made up of single-chip microcomputer, real-time clock, control button, display screen, wireless transmitter module, radio frequency power amplification module and antenna, wherein, adopt 8 single-chip microcomputers as core processor, finish signal Processing, logic determines, demonstration control, transmitting-receiving control and interrupt response function;

The real-time clock clocking passes to single-chip microcomputer, is used for demonstration time and timing controlled;

The control button is connected with the IO mouth of single-chip microcomputer, comprise switch key, upper and lower, left and right four direction key, time is provided with key and picture switch key, its effect is respectively: switch key is used to open or close transmitter, picture when time figure adjustment when upper and lower, left and right four direction key is used to the time is set and switching picture is selected, time is provided with key and is used for the time entering or withdrawing from of function is set, and the picture switch key is used for entering or withdrawing from of quick picture handoff functionality;

Display screen adopts LCD display, by Micro Controller Unit (MCU) driving, shows the whole picture that time and current distribution type LED display board show in real time;

The digital signal input end of wireless transmitter module is connected with the IO mouth of single-chip microcomputer, receives the steering order of single-chip microcomputer, goes out through modulate emission, with the action of control distributed wireless LED display board;

Radio frequency power amplification module and antenna constitute the tail circuit of transmitter jointly.

3. distributed wireless LED display system according to claim 1, it is characterized in that described wireless LED display board is made up of single-chip microcomputer, wireless receiving decoder module and some LED, wherein, adopt 8 single-chip microcomputers as core processor, finish that display message prestores, signal Processing, logic determines, demonstration control, receive control and interrupt response function;

The synchronous control signal of wireless receiving decoder module real-time listening wireless controller under the control of single-chip microcomputer, through after decoding, the verification synchronous control signal being passed to single-chip microcomputer, by single-chip microcomputer through starting corresponding figure to be shown after the logic determines, i.e. bright, the dark or gray-scale Control of LED.

4. distributed wireless LED display system according to claim 1 is characterized in that described wireless controller includes working procedure and pictorial information to be shown, and program interface comprises controlled in wireless master interface and picture interface switching; Concrete operations are divided into manual control and two kinds of patterns of timing controlled:

Manually: enter the picture interface switching by the picture switch key, picture is numbered 1,2,3,4...n, because display screen can only show 4 line characters, so adopt the roll mode demonstration; By upper and lower directionkeys moving cursor selecting picture to be shown, but by right key preview picture selected, determine the picture selected synchronic command is sent by LeftArrow, with the synchronization action of control distribution type LED display board, thereby show this width of cloth picture; After finishing, demonstration can release the picture interface switching, finishing control once more by the picture switch key;

Time calibration: carrying out needing the deadline calibration before timing controlled is provided with; After the start, enter the master menu picture, by the time key is set, entry time is provided with state, cooperates upper and lower, left and right four direction key, but the deadline calibration, and then by the time key is set and withdraws from this state, system enters main interface holding state;

Timing controlled: enter the picture interface switching by the picture switch key, picture is numbered 1,2,3,4...n, when resting on a certain picture to be shown, cursor numbers following time, by the time key is set, enter picture and regularly switch the state of setting, this width of cloth picture zero-time to be shown is set, setting completed is provided with key by the time again, leave configuration information, finish the time set to be shown of this width of cloth picture; Equally, but by right key preview picture selected.Then, moving cursor adopts same operation to finish the display setting of next width of cloth picture to next width of cloth picture numbering down.After setting was finished, controller was under the control of timer, and the operation picture shows control automatically;

Steering order sends: no matter manually control or timing controlled, after choosing picture to be shown, need send this width of cloth coding of graphics, receive and finish decoding and display action by the LED display board.

5. distributed wireless LED display system according to claim 1 is characterized in that described wireless LED display board includes working procedure and image to be displayed information, and pictorial information wherein and the pictorial information in the controller are corresponding one by one; After starting operation, the control of employing interrupt mode, during use, starting switch, single-chip microcomputer and wireless receiving module enter holding state, the control signal of real-time listening controller emission, when detect control signal and decode errorless after, pass to single-chip microcomputer, single-chip microcomputer is according to coding of graphics that control signal comprised, inquire pictorial information to be shown, driving LED shows, realizes the dynamic demonstration of distribution type LED picture.

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