WO2013020305A1 - Led display system - Google Patents

Abstract

An LED display system, including a console and a plurality of LED lights. The plurality of LED lights are provided in multiple levels of LED light groups, wherein each level of LED light group includes a plurality of LED lights, and an LED light of the N^th level of LED light group carries out one-to-many radio frequency communication with each LED light of the (N+1)^th level of LED light group, and the console carries out one-to-many radio frequency communication with each LED light of the 1^st level of LED light group, with N being a natural number. The LED display system has the advantages of wide applicability, stable performance, and being easy to maintain.

Description

 LED display system

Technical field

 The present invention relates to a display system, and more particularly to an LED display system. Background technique

 With the promotion of the concept of low-carbon energy conservation, LED lamps have been widely used in the field of lighting, and have been widely used in the display field. This is mainly due to the good color rendering characteristics of LEDs, which are used in urban lighting projects. The LED decorative lights on the wall of the building can not only achieve a very good decorative effect, but also a plurality of LED lights or a plurality of LED lights can be formed into a single LED lighting system that can reflect each other and can also display different Text and graphics, very good advertising and visual beautification. In order to enable each LED lamp to display a complete pattern together, it is necessary to control each LED or each LED light group through a control system to control its working state at any time, including the light-off state, brightness and display. Color, etc. (Of course, the smaller the LED light, the smaller the resolution of the LED display system that is spliced by multiple LED lights).

 Current methods for controlling LED light groups on building walls include the following:

 1. Adopt wired LED control system. As shown in Figure 1, the LED control system transmits the control signal of the PC master to the repeater through the signal line (including the twisted pair), and then the repeater passes the control signal. Signal lines (including twisted pairs) are distributed to a plurality of sub-controllers, each of which is connected in series with a plurality of LED lights, and the sub-controller can transmit control signals along the LED lights connected in series to any one of the LED lights, thereby It can control the working status of multiple LED lights. Although such a scheme can control any change of LED light, since multiple LEDs are connected in series, as long as one LED light or sub-controller is broken, multiple LED light sources will not work properly, so Poor reliability. Moreover, it is very inconvenient in maintenance, because it is difficult to find out which LED lamp is broken in a short time, and if the number of sub-controllers is increased, each sub-control controls one LED lamp, which not only increases the points. The cost of the controller also increases the cost of wiring.

2. In order to solve the problems in the above technical solution 1, people have come up with another one. An LED control system, in which a control module is integrated inside each LED lamp, and each LED lamp is controlled by a control module connected thereto. Since each LED light is controlled by an independent control module, the control signals of the individual LED lights do not affect each other, so the reliability of the control system is good, but since the individual control modules are not connected to other controllers, in order to achieve self-control LED For the purpose of the lamp, the control program of each control module is pre-programmed before the project installation, and cannot be changed. Although this control method better solves the reliability problem of the system, the control program of each control module Can not be changed, resulting in maintenance difficulties, the LED light display has a single display effect, and in order to save costs, the control procedure of each LED light is the same, so it can only be applied to the same occasions where the product changes, if each LED is The control procedures of the lamps are written differently, so that each LED lamp forms a systematic change pattern, which will bring great difficulties in production and installation.

 3. In order to solve the problems in the above technical solution 2, later, people have come up with a wireless communication module by adding each wireless LED in the LED control system of the technical solution 2, and the wireless communication module is connected to the control module. The control signal of the PC master is sent to each control module through a wireless repeater.

 However, due to the LED decorative lighting system on the wall of large-area buildings, the system composed of multiple LED lights or LED light groups generally has a relatively large area, and the current wireless signals (such as Bluetooth or 2.4G wireless, WIFI, etc.) The transmission distance is short, about 100 meters, and the general console will be placed at the top or bottom of the building, so for buildings with higher heights, there is no way for the LED lights farthest from the console. Received a control signal. Therefore, in the long-lighting lighting project, the control signal of the console is difficult to reach all the LED lights, so for the long-light lighting project, especially for the LED decorative lights of large-area building walls In lighting systems (ie, in LED display systems), direct control of the brightness of each LED light directly through the console has its limitations. Summary of the invention

The object of the present invention is to solve the technical problems of the prior art LED display system, such as relatively close control distance, narrow application range, unstable operation, high cost, etc. The present invention provides a new LED display system. The specific technical solutions of the present invention are as follows:

 The present invention provides an LED display system, the display system includes a console and a plurality of LED lights, wherein the plurality of LED lights are disposed in a multi-level LED light group, and each of the first-level LED light groups includes a plurality of LED lamp, one LED lamp in the Nth LED lamp group performs one-to-many radio frequency communication with each LED lamp in the N+1th LED lamp group, and each of the console and the first LED lamp group LED lights perform one-to-many RF communication, N is a natural number.

 Each LED lamp includes an RF unit, and the RF unit signal of the LED lamp in the Nth LED group covers the LEDs in the N+1th LED group and the N+2 LED group.

 The console further includes a first storage unit, configured to store physical address information of each LED light-emitting unit and position information of each LED light, and physical address information of each LED light-emitting unit and corresponding position information of each LED light- .

 The console further includes a first radio frequency unit, the first radio frequency unit of the console sends a group call instruction to the radio frequency unit of each LED lamp, and the physical address information of the radio frequency unit of the responding LED lamp is in the first storage unit. Comparing the stored physical address information of each LED light-emitting unit with the position information of each LED light, finding the position of each LED light that is answered, and the LED light of the radio frequency unit signal of the console covering half of the radius As the first-level LED light group, the other LED lights are used as the second-level LED light group.

 The radio frequency unit of the first LED lamp of the Nth LED group sends a group call command to each LED lamp, and establishes a multi-pair RF communication chain between the LED lamp of the responding N+1th LED group and the first LED lamp. road.

 The radio frequency unit of the nth LED lamp of the Nth LED group sends a group call command to each LED lamp, and removes the LED lamp that establishes an RF communication link with the first to n-1th LED lamps, and will respond The other LED lamps in the N+1th LED group and the nth LED in the Nth LED group establish a multi-to-one RF communication link, and the LED lamps of the Nth LED group are turned to the respective ones. The LED lamp sends a group call command, and after the n-1th LED lamp in the Nth LED group and the LED lamp in the N+1th LED group establish an RF communication link, the Nth LED group is The nth LED light sends a group call command to each LED lamp, where n is a natural number greater than one.

The first radio frequency unit of the console further includes a first connection signal detecting module, the first shot The frequency unit periodically sends a paging command to each LED lamp of the first-level LED lamp group connected to the console and receives a response command sent by each LED lamp of the first-level LED lamp group, the first connection signal detecting module The method is configured to detect a time when the response command returns, and determine whether the time is greater than a certain threshold. When the time returned by the response command is greater than a certain threshold, determining the LED of the console and the first-level LED group The connection signal between the lamps is interrupted, and after the LED lamp and the console connection signal of the first-level LED lamp group are interrupted, the first control unit of the console controls the first radio frequency unit to send a group call command to each LED lamp; The nth LED lamp of the Nth LED lamp group further includes an N+1 connection signal detecting module, and the radio frequency unit of the nth LED lamp in the Nth LED lamp group periodically goes to the nth The LED lamps in the N+1th LED group connected by the LED lamps send a paging command and receive a response command sent by the LED lamps in the (N+1)th LED group, the Nth LED group The N+1th connection signal detecting module of the nth LED lamp is used to detect the response command return Time, and determining whether the time is greater than a certain threshold. When the time of the response command is greater than a certain threshold, determining the nth LED lamp and the N+1 LED lamp group in the Nth LED group The LED light connection signal is interrupted, and the number of the Nth LED light group is interrupted after the nth LED light in the Nth LED light group and the LED light connection signal in the N+1 LED light group are interrupted. The n LED lights send a group call command to each LED lamp.

 Each of the LED lamps of the Nth-level LED lamp group includes an N+1th storage unit, and the (N+1)th storage unit is configured to store an instruction for controlling the operation of the N+1th LED group, the Nth stage Each LED lamp in the LED lamp group includes an N+1th control unit, and the N+1th control unit transmits a control command stored by the (N+1)th storage unit to each of the N+1th LED group The N+1 storage unit is further configured to store a work instruction of each LED lamp in the Nth LED group, and the N+1th control unit acquires a control command of the N+1th storage unit to control the Nth Each LED in the LED group is working.

 The first control unit of the console controls the first radio frequency unit to periodically send a clock tick to each LED lamp, and the radio frequency unit of each LED lamp receives the clock tick and stores and recalls.

 Each LED lamp circulates frequency hopping in the 2.4G frequency range of 200~300 frequency points.

 Compared with the prior art, the main beneficial effects of the LED display system of the present invention are:

The invention adopts the LED light group of each level to carry out the topographic relay radio frequency communication, so that the console can It is enough to transmit the command for controlling the operation of each LED lamp to a greater distance, which solves the problem that the transmission distance caused by the wireless control method in the prior art is relatively close.

 The LED display system of the invention can replace the radio frequency signal of the other LED lamp group to realize the topology relay transmission of the radio frequency signal when the LED unit of any of the LED lamp groups fails, and can also realize From the newly formed new N-level LED light group to the control link of the N+1-th LED light group, and realize the automatic control function, the whole LED control work is stable, even if any LED light does not work normally, it will not affect The entire system is stable, easy to maintain, and low in cost.

 The LED lamps of the LED display system of the invention all have a storage unit, and when the control terminal is faulty or disconnected, the data stored in the storage unit can be called autonomously to realize the display state of the control LED. Moreover, in the case that the console is disconnected from the first-level LED light group, the LED light in the first-level LED light group can call the stored data to control the LED light in the second-level LED light group, and the control is more intelligent. Chemical.

 The invention periodically sends a clock tick to each LED lamp through the console, so that the work of each LED lamp is synchronized, and the problem that the display lights are out of synchronization with each LED lamp is avoided.

 The LED lights in the LED display system of the invention are cyclically frequency hopped in the 2.4G frequency band of 200~300 frequency points, which can avoid the phenomenon that the whole system is disturbed by external frequency interference. DRAWINGS

 1 is a block schematic diagram of a prior art LED display system;

 2 is a block diagram showing an LED display system according to an embodiment of the present invention;

 3 is a block diagram showing a console of an LED display system according to an embodiment of the present invention;

 4 is a schematic block diagram of an LED lamp in a first-level LED lamp group of an LED display system according to an embodiment of the present invention;

 5 is a schematic block diagram of an LED lamp in a second-stage LED lamp group of an LED display system according to an embodiment of the present invention;

6 is a block diagram showing an LED lamp in an Nth-level LED lamp group of an LED display system according to an embodiment of the present invention. detailed description

 The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

 Example

 As shown in FIG. 2, the present invention provides an LED display system, which includes a console and a plurality of LED lights, and the plurality of LED lights are disposed in a multi-level LED light group, and each level of the LED light group Included in the plurality of LED lights, one of the N-th LED lamp groups performs one-to-many radio frequency communication with each of the N+1th LED lamp groups, the console and the first-level LED lamp group Each of the LED lights performs one-to-many radio frequency communication, and N is a natural number. The console is connected to the PC, and may be connected by a wireless connection or by a wired connection. The console, the main station LED lamp and the slave LED lamp each include a radio frequency unit. In order to distinguish, in the present invention, the control will be performed. The RF unit of the station, we call it the first RF unit, we call the RF unit of the LED lamp in the first-level LED group as the second RF unit, and the RF unit of the LED lamp in the second-level LED group is called As the third RF unit, the RF unit of the LED lamp in the Nth LED group is called the N+1th RF unit. As shown in FIG. 2, the LED lamp in the first-level LED lamp group transmits the command relay for controlling the operation of each LED lamp of the console to the LED lamp of the second-level LED lamp group, and the LED lamp of the second-level LED lamp group will be The console controls the LED relay of the operation of each LED lamp to be transmitted to the LED lamp of the third-level LED lamp group, and so on, the LED lamp of the N-1-level LED lamp group transmits the command relay of the console to control the operation of each LED lamp to The LED lamp of the Nth LED group, the first RF unit of the console establishes a one-to-many radio communication with the second RF unit of the LED lamp in the first LED group, and any of the first LED lamps A second RF unit of an LED lamp establishes a one-to-many radio frequency communication with a third RF unit of the LED lamp in the second LED lamp group, and so on, as shown in FIG. 6, the N-1th LED The Nth radio frequency unit of any of the LED lights in the light group establishes a one-to-many radio frequency communication with the N+1th radio frequency unit of the LED light in the LED light group in the Nth LED light group.

As shown in FIG. 3, the console includes a first control unit in addition to the first radio frequency unit, and the first control unit transmits a command for controlling the operation of each LED lamp to the global transmission, even if each LED The working instructions of the lamps are different, but since the physical addresses of the radio frequency units connected to the LED lights are different, the control commands sent by the first control unit may include all the control commands of the LED lights, and the control units of the LED lights. After receiving the control command, sorting is performed to find a sub-control command corresponding to the physical address of the radio frequency unit of the LED lamp, thereby controlling the driving unit of the LED lamp to drive the LED lighting unit to operate. The purpose of this design is mainly to save costs, because if the control commands sent to the LED lights are different, in order to avoid the interference of the adjacent two LED lamp communication signals, the communication principle of the mobile phone must be similar to the method of frequency hopping. Radio frequency communication, in this way, not only increases communication costs, but also the problem of synchronization of playback data between LED lights is difficult to solve.

In order to facilitate the explanation of the principle that the console controls the operation of each LED lamp, the following examples are illustrated: As shown in FIG. 4, the LED lamp of the first-level LED lamp group includes not only the second RF unit but also the second control unit, such as As shown in FIG. 5, the LED lamp of the second-level LED lamp group includes not only a third radio frequency unit, but also a third control unit, and the first radio frequency unit of the console sends the control command group generated by the first control unit to a second RF unit of the LED lamp in the first level LED group, the second RF unit of the LED lamp in the first stage LED group receives the control command and then passes to the second LED lamp in the first stage LED group The control unit performs sorting, selects a sub-control instruction that matches each LED lamp in the first-level LED lamp group, and then stores the sub-control command in the second storage unit (the console includes the first storage unit, As will be described later, the physical address information of the RF unit of each LED in the first-level LED group is different, so the sub-control instructions of each LED in the first-level LED group are different. Its sub-control instructions Corresponding to the physical address information of the frequency unit, the second control unit of any one of the LED lamps of the first level LED group sends the control command sent by the console to the LED in the second LED lamp group through the second RF unit. The second radio frequency unit of the LED lamp in the second-level LED lamp group receives the control command and performs the same operation as the LED lamp of the first-level LED lamp group, and forwards the control command to the third-level LED lamp group. The LED lamp and the sub-control instructions corresponding to the LED lamps in the second-level LED lamp group are sorted out, and are not described herein again. In fact, the LED lamps in the first-level LED lamp group and the LED lamps in the second-level LED lamp group have the same component structure, but the functions realized when the topology communication RF communication network is established with the console is different. Which LED light is determined as the LED light in the first-level LED light group among the LED lights, Which LED light is determined as the LED light in the second-level LED light group is determined according to the position of each LED light relative to the console. Moreover, the RF signal coverage of the first RF unit of the console and the RF unit of each LED lamp is the same.

 Specifically, when the LED lights do not establish RF communication and the LED lights and the console do not establish radio frequency communication, the following two methods can be used to realize the topology communication RF communication network of each LED lamp and the LED lamp and the console.

 1. Manual setting, first number each LED light, the number of each LED light corresponds to the two-dimensional space position of each LED light, and the console is set at the center of the RF signal coverage of each LED light, according to the console The range of signal coverage, the LED lights in the range of the console signal are divided into two groups, one is the first-level LED light group, and the other is the second-level LED light group, wherein the first-level LED light group is located in the console Within half of the signal coverage radius, that is, centered on the console, draw a circle with half of the radius of the RF signal coverage of the first RF unit of the console, and the LED light within the circle is the first LED group. Other than the circle is a second-level LED lamp group. As shown in FIG. 2, the first-level LED lamp group includes a plurality of LED lamps, which are a first LED lamp, a second LED lamp, and a third LED lamp, respectively. n LED lights, then the first in the first stage LED light group

The LED light in the second-level LED light group in the RF signal coverage area of the LED lamp establishes a many-to-one RF communication link with the first LED light in the first-level LED light group; the second-level LED light group is removed An LED light that establishes an RF communication link with the first LED light in the first stage LED light group, and the second level LED light group in the coverage of the RF signal of the second LED light in the first stage LED light group Other LED lights establish a multi-to-one RF communication link with the second LED light in the first-level LED light group, and so on, removing the first to n-th LED lights in the second-level LED light group to establish RF communication The LED light of the link, the other LEDs in the second-level LED light group in the coverage area of the n-th LED light source in the first-level LED light group and the n-th LED in the first-level LED light group The lights establish a many-to-one RF communication link.

After the LED lights in the first-level LED lamp group and the LED lamps in the second-level LED lamp group establish an RF communication link, the RF signal of the first LED lamp in the second-level LED lamp group covers the radius The LED light within half of the distance is divided into the third-level LED light group, and an RF communication link of the LED light in the third-level LED light group and the first LED light in the second-level LED light group is established. Similarly, Removing the LED light that establishes an RF communication link with the first to nth LED lamps in the second-level LED light group, and covering the radio frequency signal of the n-th LED light in the second-level LED light group within half of the radius Other LED lights are included in the third-level LED light group. By analogy, a top-of-the-line relay RF communication link of each of the LED lamps in the Nth-level LED lamp group and the LED lamps in the N+1-th LED lamp group is established by the above method. The number of LED lamps included in each level of LED lamp group is not limited. The area of the two-dimensional plane composed of LED lamps of different levels may be different, but the condition must be met: adjacent LED lamps of each level can establish RF communication connection. . After the communication connection network is established, the network topology chart is stored in the first storage unit of the console, and the first control unit of the console invokes the network topology structure diagram to send control instructions to the LED lights. The line of the control command reaching the LED lamp is performed according to the network topology, and the control command is forwarded by other LED lights if the control command cannot be reached at one time.

2. The system automatically sets, first number each LED light, find the physical address of each LED light unit, establish the corresponding relationship between each LED light number and the physical address of the RF unit, and the number of each LED light and each LED Corresponding relationship between the physical address of each LED light-emitting unit and the two-dimensional spatial position of each LED light is established, and the correspondence is stored in the first storage of the console. In the unit, the console further includes a first radio frequency unit, the first radio frequency unit of the console sends a group call instruction to the radio frequency unit of each LED lamp, and the physical address information of the radio frequency unit of the responding LED lamp is first Comparing the physical address information of each LED light unit stored in the storage unit with the position information of each LED light, and finding the position of each LED light to be answered, the signal of the RF unit located in the console is within half of the radius of the coverage. The LED light is used as the first-level LED light group, and the other LED lights are used as the second-level LED light group. The radio frequency unit of the first LED lamp of the first-level LED lamp group sends a group call command to each LED lamp, and establishes the LED lamp of the responding second-level LED lamp group and the first LED lamp in the first-level LED lamp group. Many-to-one RF communication link. The radio frequency unit of the second LED lamp of the first-level LED lamp group sends a group call command to each LED lamp, and removes the second level of establishing an RF communication link with the first LED lamp of the first-level LED lamp group. The LED light in the LED light group establishes a plurality of pairs of RF communication links with the other LED lights in the second LED light group and the second LED light in the first LED light group, and so on, first level The RF unit of the nth LED of the LED lamp group sends a group call command to each LED lamp, Off the LED lights that establish a radio frequency communication link with the first to n-1th LED lamps, and the other LEDs in the second LED lamp group that are answered and the nth in the first LED lamp group The LED lamp establishes multiple commands. After the n-1th LED lamp and the LED lamp in the second LED lamp group establish an RF communication link, the nth LED lamp sends a group call command to each LED lamp, where n is greater than 1. Natural number. According to the above method and the same principle as the manual setting, as shown in FIG. 6, the radio frequency unit of the nth LED lamp of the Nth LED group sends a group call command to each LED lamp, and removes the nth - 1 LED light establishes the LED light of the RF communication link, and the other LED lights that respond to establish a multi-to-one RF communication link with the nth LED light, and each LED light of the Nth LED light group goes to each LED one by one The lamp sends a group call command, and after the n-1th LED lamp and the LED lamp in the N+1th LED group establish an RF communication link, the nth LED lamp sends a group call instruction to each LED lamp, where n is A natural number greater than 1.

 After the network topology is established, if one of the LED lights has a power failure, causing the RF unit to fail to work properly, the LED will be disconnected from the entire communication network, if the broken LED is the primary LED The lights, then the slave LEDs that establish one-to-many radio communication with the main station LEDs are also disconnected from the entire communication network. Of course, this is not allowed. The present invention solves the above problems by adopting the following method:

The first radio frequency unit of the console further includes a first connection signal detecting module, and the first radio frequency unit periodically sends a paging command to each LED lamp of the first-level LED lamp group connected to the console and receives the first a response command sent by each LED lamp of the first-level LED lamp group, the first connection signal detecting module is configured to detect a time when the response command returns, and determine whether the time is greater than a certain threshold, when the response command returns If the threshold value is greater than a certain threshold, it is determined that the connection signal between the console and the LED light of the first-level LED light group is interrupted, after the LED light of the first-level LED light group and the console connection signal are interrupted. The first control unit of the console controls the first radio unit to send a group call instruction to each LED lamp, and then performs the work of re-establishing the network topology structure, and the working principle and the system establish the network topology for the first time. The principle of the structure is the same, and is not described herein again. The first LED lamp in the first-level LED lamp group further includes a second connection signal detecting module, and the first LED lamp in the first-level LED lamp group is shot. First means to periodically connected to the first LED lamp The LED light in the secondary LED light group sends a paging command and receives a response command sent by the LED light in the second-level LED light group, and the second connection of the first LED light in the first-level LED light group The signal detecting module is configured to detect the time when the response command returns, and determine whether the time is greater than a certain threshold. When the time of the response command is greater than a certain threshold, determine the first LED in the first LED group. The signal connection between the lamp and the LED lamp in the second-level LED lamp group is interrupted, after the first LED lamp in the first-level LED lamp group and the LED lamp connection signal in the second-level LED lamp group are interrupted, the first stage The first LED light in the LED light group sends a group call command to each LED light, and then the work of re-establishing the network topology structure is performed. The LED lights of the other levels of the LED light group and the first LED light of the first-level LED light group have the same working principle, that is: the nth LED light of the Nth-level LED light group further includes the N+ 1 connecting a signal detecting module, the radio frequency unit of the nth LED lamp in the Nth LED lamp group periodically sends a page to the LED lamp in the N+1th LED group connected to the nth LED lamp And receiving an answer command sent by the LED lamp in the (N+1)th LED group, wherein the N+1th connection signal detecting module of the nth LED lamp in the Nth LED group is used to detect the response The time when the command returns, and determines whether the time is greater than a certain threshold. When the time of the response command is greater than a certain threshold, the nth LED light and the N+1 level in the Nth LED group are determined. The LED lamp connection signal in the LED lamp group is interrupted, and the Nth LED lamp group is interrupted after the signal connection signal of the nth LED lamp in the Nth LED lamp group and the N+1 LED lamp group is interrupted. The nth LED lamp sends a group call command to each LED lamp, and then performs the work of re-establishing the network topology structure, which will not be described here.

After the RF communication network is established, the console can send control commands to the LED lights through the RF communication network. In fact, the working states of the LED units of the LED lamps do not need to be updated every moment, if The control command of the working state of the LED unit of the LED lamp needs to be sent through the console every moment, which will impose a great burden on the communication network. In the case of poor RF signal, the signal transmission will be temporarily interrupted. Moreover, due to the instability of the wireless network signal, the problem of signal transmission delay is easily caused, and the problem that the operating states of the light-emitting units of the LED lamps are not synchronized may further occur. Therefore, as described above, a storage unit is disposed in each LED lamp for storing a sub-control command for controlling the operation of each LED lamp illumination unit. When the console is lost to an LED lamp of the first-level LED lamp group, In order to be able to lose connection at the control end, each main station LED light Still being able to control the operation of the slave LED lamp connected thereto, the LED lamp of the first LED lamp group further comprises a second storage unit, wherein the second storage unit is configured to store and control the second-level LED lamp group to the N-th stage An instruction of an LED lamp of the LED lamp group, wherein the control command is a control command sent by the controller, the LED lamp in the second-level LED lamp group includes a second control unit, and the second control unit The control instructions stored by the two storage units are sent to the LEDs of the second level LED group to the Nth LED group. That is, each of the LED lamps in the Nth-level LED lamp group includes an N+1th storage unit, and the (N+1)th storage unit is configured to store an instruction for controlling the operation of the N+1th LED group, the Each of the LED lamps of the N-level LED lamp group includes an N+1th control unit, and the N+1th control unit sends the control command stored by the (N+1)th storage unit to the N+1th LED group. Each of the LED lamps; the (N+1)th storage unit is further configured to store a work instruction of each LED lamp in the Nth-level LED lamp group, and the (N+1)th control unit acquires a control command control of the (N+1)th storage unit Each LED light in the Nth LED group operates.

 After each LED lamp is provided with a storage unit, the control unit of each LED lamp can call the control command stored in the storage unit to control the operation of the illumination unit, or the LED lamp of the N+1th LED group can also be directly used by the Nth-level LED lamp. The LED light control in the group, because the control commands of the LED lights in the LED lamps of each level can be independent of each other, the working time data is read from the crystal oscillator of the control unit of each LED lamp, due to the long-term use of the crystal oscillator There will be a time error in the middle, so the working state of each LED light-emitting unit may be out of sync.

 In order to solve this problem, the first control unit of the console controls the first radio frequency unit to periodically send a clock tick to each LED lamp, and the radio frequency unit of each LED lamp receives the clock tick and stores and calls, thus correcting each LED. After the time error of the lamp crystal oscillator, the LED control system can be synchronized.

 Of course, in order to avoid the problem that the LED control system interferes with the external wireless signal, each LED lamp in the control system of the LED lamp of the present invention performs cyclic frequency hopping operation in the 2.4G frequency band of 200~300 frequency points.

In the LED control system of the present invention, each LED lamp has the same physical structure, and includes a radio frequency unit, a power supply unit, a control unit, a storage unit, a driving unit, and a lighting unit. The power unit is used for the radio frequency unit, the control unit, the storage unit, Drive unit and lighting unit power supply, drive unit The control command of the acquisition control unit controls the operation of the illumination unit. Although the physical structures of the LED lamps are the same, the network communication principles of the LED lamps in the control system of the LED lamps are different, but they can be replaced with each other. It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and the present invention is not limited thereto. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be Modifications or equivalents are intended to be included within the scope of the appended claims.

Claims

Claim  An LED display system, the display system comprising a console and a plurality of LED lamps, wherein the plurality of LED lamps are disposed in a multi-level LED lamp group, and each of the LED lamp groups comprises a plurality of LEDs a plurality of LED lights of the Nth LED group and a plurality of RF lights of the LEDs of the N+1th LED group, the console and each LED in the first LED group The lamp performs one-to-many RF communication, and N is a natural number.  2. The LED display system according to claim 1, wherein each of the LED lamps comprises a radio frequency unit, and the radio frequency unit signal of the LED lamp in the Nth LED lamp group covers the N+1th LED group and the LED lights in N+2 LED light groups.  The LED display system according to claim 2, wherein the console further comprises a first storage unit, configured to store physical address information of each LED light radio unit and position information of each LED light, each LED The physical address information of the lamp radio unit corresponds to the position information of each LED lamp.  4. The LED display system according to claim 3, wherein the console further comprises a first radio frequency unit, and the first radio frequency unit of the console sends a group call command to the radio frequency unit of each LED lamp, and Comparing the physical address information of the radio frequency unit of the responding LED lamp with the correspondence between the physical address information of each LED lamp radio frequency unit stored in the first storage unit and the position information of each LED lamp, and finding the position of each LED lamp that is answered , the LED lamp located in the control unit's RF unit signal covering half of the radius is used as the first-level LED lamp group, and the other LED lamps are used as the second-level LED lamp group.  The LED display system according to claim 4, wherein the radio frequency unit of the first LED lamp of the Nth LED lamp group sends a group call command to each LED lamp, and the N+1th LED lamp to be answered The set of LED lights establish a multi-to-one RF communication link with the first LED. The LED display system according to claim 5, wherein the radio frequency unit of the nth LED lamp of the Nth LED group sends a group call command to each LED lamp, and removes the first to nth - 1 LED light establishes an LED light of the RF communication link, and establishes a plurality of pairs of RF lights of the other LED lights in the N+1th LED light group and the nth LED light in the Nth LED light group In the communication link, each LED light of the Nth LED group sends a group call instruction to each LED lamp one by one, and is to be in the n-1th LED lamp and the N+1th LED group in the Nth LED group. LED lights establish RF communication links After that, the nth LED lamp in the Nth LED group sends a group call command to each LED lamp, where n is greater than The natural number of 1.  The LED display system according to claim 6, wherein the first radio frequency unit of the console further comprises a first connection signal detecting module, and the first radio frequency unit periodically connects to the first connection with the console. Each LED light of the LED light group sends a paging command and receives a response command sent by each LED lamp of the first-level LED light group, and the first connection signal detecting module is configured to detect a time when the response command returns, and determine Whether the time is greater than a certain threshold, and when the time returned by the response command is greater than a certain threshold, determining that the connection signal between the console and the LED lamp of the first-level LED lamp group is interrupted, After the LED light of the first-level LED light group and the console connection signal are interrupted, the first control unit of the console controls the first RF unit to send a group call command to each LED light; the first in the Nth-level LED light group The n LED lamps further include an N+1th connection signal detecting module, and the radio frequency unit of the nth LED lamp in the Nth LED lamp group periodically goes to the N+1th LED connected to the nth LED lamp. LED light in the light group Sending a paging command and receiving a response command sent by the LED lamp in the (N+1)th LED lamp group, wherein the N+1th connection signal detecting module of the nth LED lamp in the Nth LED lamp group is used Detecting the time when the response command returns, and determining whether the time is greater than a certain threshold. When the time of the response command is greater than a certain threshold, determining the nth LED in the Nth LED group and the first The LED light connection signal in the N+1 LED light group is interrupted, after the connection signal of the nth LED light in the Nth LED light group and the LED light in the N+1th LED light group is interrupted, The nth LED in the N-level LED group sends a group call command to each LED. The LED display system according to any one of claims 1 to 7, wherein each of the LED lamps of the Nth-level LED lamp group comprises an N+1th storage unit, and the (N+1)th storage unit For storing an instruction for controlling the operation of the N+1th LED group, each LED of the Nth LED group includes an N+1th control unit, and the N+1th control unit will be the Nth The control command stored in the +1 storage unit is sent to each LED lamp in the N+1th LED group; the N+1th storage unit is further configured to store a work instruction of each LED lamp in the Nth LED group. The (N+1)th control unit acquires a control command of the (N+1)th storage unit to control the operation of each LED lamp in the Nth LED group. 9. The LED display system of claim 1 wherein: the first of the console The control unit controls the first radio frequency unit to periodically send a clock tick to each LED lamp, and the radio frequency unit of each LED lamp receives the clock tick and stores and calls.  10. The LED display system according to claim 1, wherein each of the LED lamps operates in a cyclic frequency hopping operation at a frequency of 200-300 frequencies in the 2.4G frequency band.