LED display screen control system
By introducing multiple data transmission paths and a serial communication module into the LED display control system, the problems of easy data transmission failure and high line costs in the existing technology have been solved, achieving efficient and stable data transmission and low-cost display operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN PINE TECH CO LTD
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-05
Smart Images
Figure CN224328491U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of LED display technology, and in particular to an LED display control system. Background Technology
[0002] Many existing LED display control systems use a single-line connection mode, where the host computer and the transmitting card, and the transmitting card and the receiving card, rely on a single path to transmit massive amounts of display data and control commands. This wiring structure is extremely vulnerable to network failures. If any network cable breaks due to daily wear and tear or aging, or if any signal connection port experiences poor contact due to environmental factors such as moisture or electromagnetic interference, the entire data transmission link will instantly fail. This not only causes the display screen to freeze or go black, resulting in visual information interruption and a very poor viewing experience, but also...
[0003] Secondly, existing LED light boards or LED modules typically transmit signals through a HUB75 interface module connected to a receiving card, and LED light boards are also connected to each other via a HUB75 interface module. However, the aforementioned HUB75 interface module has a large number of interface pins, uses a large number of signal lines, and has high circuit costs; moreover, when the signal lines of individual interfaces malfunction, it can lead to display abnormalities and easily affect the working stability of the display screen. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an LED display control system that can ensure the efficiency and stability of data transmission between the host computer, the sending card and the receiving card, minimize the display failure rate and improve the user's viewing experience.
[0005] To address the aforementioned technical problems, this utility model provides an LED display screen control system, comprising a host computer, a sending card, a relay processing device, and LED light panels. The sending card includes a data processing device, a main communication module, a backup communication module, and at least two first data communication modules. The host computer includes second data communication modules that correspond one-to-one with the first data communication modules and are connected to the first data communication modules. The relay processing device includes multiple receiver cards connected in series, with both ends of the relay processing device connected to the main communication module and the backup communication module, respectively. The receiver cards are connected to several LED light panels. The data processing device is connected to the main communication module, the backup communication module, and the first data communication modules, respectively, for transmitting data signals sent by the host computer to the relay processing device via the main communication module and the backup communication module, and receiving corresponding feedback data.
[0006] As an improvement to the above solution, the receiving card includes a first relay communication module and a second relay communication module. The first relay communication module of the preceding receiving card is connected to the second relay communication module of the following receiving card. The first relay communication module of the first receiving card is connected to the main communication module, and the second relay communication module of the last receiving card is connected to the backup communication module.
[0007] As an improvement to the above solution, the data processing device includes a processor and a first FPGA module, both of which are connected to the first data communication module.
[0008] As an improvement to the above solution, the receiving card is a HUB card, and the receiving card includes a second FPGA module.
[0009] As an improvement to the above scheme, the main communication module, backup communication module, first data communication module, second data communication module, first relay communication module and second relay communication module are all Ethernet interface modules.
[0010] As an improvement to the above solution, the LED light board is provided with an MCU module and a first serial communication module, and the MCU module is connected to the first serial communication module; the receiving card is provided with a second serial communication module corresponding to the first serial communication module, and the second serial communication module is connected to the first serial communication module through a ribbon cable.
[0011] As an improvement to the above solution, the receiving card is equipped with multiple second serial communication modules, and each second serial communication module is configured to correspond one-to-one with the LED light board; the receiving card is connected to the first serial communication module of the corresponding LED light board through the second serial communication module; both the first serial communication module and the second serial communication module are dual TTL serial communication modules.
[0012] As an improvement to the above solution, the receiving card is connected to the first serial communication module of the multiple LED light boards respectively through the second serial communication module; both the first serial communication module and the second serial communication module are RS485 serial communication modules.
[0013] As an improvement to the above solution, the receiving card is equipped with two second serial communication modules, and the multiple LED light boards are connected in series through the first serial communication module; the receiving card is connected to the first serial communication module of the first LED light board through one second serial communication module, and the receiving card is connected to the first serial communication module of the last LED light board through another second serial communication module; both the first serial communication module and the second serial communication module are TTL serial communication modules.
[0014] As an improvement to the above solution, the Ethernet interface is a Gigabit Ethernet interface module.
[0015] The beneficial effects of implementing this utility model are as follows:
[0016] This invention can connect to all the connection cards in the relay processing device through the main communication module and backup communication module of the sending card, respectively, to form the main communication path and backup communication path of the sending card. At the same time, the sending card can communicate with the host computer through any of the first data communication modules. Through multiple data transmission links, the data transmission efficiency and stability between the host computer, the sending card and the receiving card are guaranteed, ensuring that the LED display can still work normally in the face of various line faults, minimizing the display failure rate, thereby ensuring the normal operation of the LED display and improving the user viewing experience.
[0017] Secondly, the LED light board and the receiving card and / or the LED light boards are connected by a serial communication module, which simplifies the circuit structure, reduces the number of wires required, reduces the circuit cost, and also reduces the failure rate of the circuit communication and improves the working stability of the display screen. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the LED display screen control system of this utility model;
[0019] Figure 2 yes Figure 1 A schematic diagram of the data processing device;
[0020] Figure 3 yes Figure 1 A schematic diagram of the receiver card's structure;
[0021] Figure 4 yes Figure 1 A schematic diagram of the connection structure between the receiver card and the LED light board;
[0022] Figure 5 This is a schematic diagram of the structure of the second embodiment of the LED display screen control system of this utility model;
[0023] Figure 6 This is a structural schematic diagram of the third embodiment of the LED display screen control system of this utility model. Detailed Implementation
[0024] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0025] like Figures 1 to 4 As shown, Figures 1 to 4The diagram shows a first embodiment of the LED display control system of this utility model. The system includes a host computer 1, a transmitting card 2, a relay processing device 3, and an LED light board 4. The transmitting card 2 includes a data processing device 21, a main communication module 22, a backup communication module 23, and at least two first data communication modules 24. The data processing device 21 is connected to the main communication module 22, the backup communication module 23, and the first data communication modules 24, respectively. The host computer 1 includes a second data communication module 11, which corresponds one-to-one with the first data communication modules 24. The second data communication module 11 is connected to the first data communication modules 24, thereby forming multiple data transmission paths between the host computer 1 and the transmitting card 2. The multiple data transmission paths share a single communication address. The transmitting card 2 can achieve bidirectional communication with the host computer 1 through any data transmission path. Regardless of network link switching, the host computer 1 does not need to perform cumbersome communication address changes, improving overall operating efficiency. Moreover, by setting up backup data transmission paths, the data transmission efficiency and stability between the host computer 1 and the transmitting card 2 can be guaranteed.
[0026] The relay processing device 3 includes multiple receiver cards 5 connected in series. Each receiver card 5 includes a first relay communication module 51 and a second relay communication module 52. The first relay communication module 51 of the preceding receiver card 5 is connected to the second relay communication module 52 of the following receiver card 5. The first relay communication module 51 of the first receiver card 5 is connected to the main communication module 22, and the second relay communication module 52 of the last receiver card 5 is connected to the backup communication module 23, forming the main communication path and backup communication path of the sending card 2. The dual data transmission path ensures the data transmission efficiency and stability between the sending card 2 and the receiver card 5. Each receiver card 5 is connected to several LED light boards 4, and the LED light boards 4 connected to multiple HUB cards together form an LED display screen. This embodiment ensures the data transmission efficiency and stability between the host computer 1, the sending card 2, and the receiver card 5 through multiple data transmission paths, thereby ensuring that the LED display screen can still work normally when facing various line faults, minimizing the display failure rate, ensuring the normal operation of the LED display screen, and improving the user viewing experience.
[0027] The data processing device 21 includes a processor 211 and a first FPGA module 212, both of which are connected to the first data communication module 24. The processor 211 is preferably an MCU controller, but this is not a limitation.
[0028] The receiving card 5 is a HUB card, and the receiving card 5 includes a second FPGA module 53. The first FPGA module 212 and the second FPGA module 53 can perform precise logical judgments, realize millisecond-level automatic path switching in the event of line or network failure, ensure "zero interruption" of data transmission, and thus ensure that the display screen is always online.
[0029] In practical use, the host computer 1 can send data signals to the sending card 2 through any of the second data communication modules 11 and their corresponding first data communication modules 24. The sending card 2 responds to the data signals from the host computer 1 in real time through the processor 211 and forwards them to the FPGA module. The FPGA module, with its strong parallel computing capabilities, processes the data and simultaneously sends data communication packets to the main communication module 22 and the backup communication module 23. The main communication module 22 and the relay processing device 3 form a main data transmission path, and the backup communication module 23 and the relay processing device 3 form a backup data transmission path. Data communication packets can be sent to all receiving cards 5 through both the main and backup data transmission paths. The FPGA module in the receiving card 5 can analyze and process the data communication packets in real time and control the LED light board 4 connected to the receiving card 5 according to the corresponding control signals. Moreover, it can send the feedback data back to the sending card 2 in sequence through the original path according to the time-division multiplexing method, and then transmit it to the host computer 1, thereby realizing the communication control of the LED display screen. For the data returned from the two data transmission paths, the transmitting card 2 can control the data acquisition through timers and logic gates in the FPGA module. For example, it can acquire the first returned feedback data packet and upload it to the host computer 1, or integrate the feedback data packets returned from both paths (e.g., when one end of the receiving card 5's interface malfunctions) and upload it to the host computer 1. The above logic control principles are existing technologies and will not be elaborated further here. The feedback data includes the receiving card 5's own status data and detailed information about the LED light board 4 connected to it.
[0030] The main communication module 22, backup communication module 23, first data communication module 24, second data communication module 11, first relay communication module 51, and second relay communication module are all Ethernet interface modules. Preferably, the Ethernet interface is a Gigabit Ethernet interface module to improve data transmission efficiency, but this is not a limitation.
[0031] To simplify the wiring structure between the LED board and the receiver card 5, the LED board 4 is equipped with an MCU module and a first serial communication module 41, with the MCU module connected to the first serial communication module 41. The receiver card 5 is equipped with a second serial communication module 54 corresponding to the first serial communication module 41, which is connected to the first serial communication module 41 via a ribbon cable. This enables communication between the receiver card 5 and the LED board 4, thereby enabling communication between the host computer 1 and the LED board 4, and ultimately controlling the LED board 4 to achieve color display functionality.
[0032] The receiving card 5 is equipped with multiple second serial communication modules 54, and each second serial communication module 54 is configured to correspond one-to-one with the LED light board 4. The receiving card 5 is connected to the first serial communication module 41 of the corresponding LED light board 4 through the second serial communication module 54, so as to realize the communication connection between one receiving card 5 and multiple LED light boards 4. This is applicable to the field of small-pitch products, that is, in the display screen formed by LED light boards 4, the spacing between LED light boards 4 is small and the circuit cost is low.
[0033] Both the first serial communication module 41 and the second serial communication module 54 are dual TTL serial communication modules. Each dual TTL serial communication module includes a master serial port and a slave serial port, which share a common ground interface. Both the master and slave serial ports include TX and RX interfaces. The receiving card 5 can communicate with the LED light board 4 via either the master or slave serial port; that is, the receiving card 5 can communicate with the LED light board 4 using only three signal lines. When the master serial port communication fails, the connection can be switched to the slave serial port to improve data transmission stability. When both serial ports send the same data simultaneously, serial port transmission redundancy is achieved, thereby ensuring the reliability and integrity of data transmission.
[0034] Preferably, the MCU module is an STM32F407VE, but it is not limited to this.
[0035] like Figure 5 As shown, Figure 5 This diagram shows a second embodiment of the LED display control system of the present invention. This embodiment is similar to... Figure 4The difference in the first embodiment shown is that the receiving card 5 is connected to the first serial communication modules 41 of the multiple LED light boards 4 respectively through the second serial communication module 54, and the receiving card 5 and the LED light boards 4 are connected in parallel. Both the first serial communication module 41 and the second serial communication module 54 are RS485 serial communication modules. The RS485 communication module includes RS+ and RS- interfaces, enabling differential signal transmission. The receiving card 5 is connected in parallel with the multiple LED light boards 4 through the half-duplex mode of the RS485 communication module. The MCU module on the LED light board 4 uses DIP switches to allocate addresses and realize data transmission.
[0036] In this embodiment, only two signal lines are needed to establish a communication connection between the receiver card 5 and the LED light board 4. The number of communication lines required is small, the line structure is simple and the cost is low. Moreover, the serial communication module has a small number of interface pins, occupies little space on the LED light board 4, and has relatively low electrical costs. It is suitable for applications in the field of large-pitch products, such as information boards in the transportation sector.
[0037] like Figure 6 As shown, Figure 6 This diagram shows a third embodiment of the LED display control system of the present invention. This embodiment is similar to... Figure 4 The difference in the first embodiment shown is that the receiving card 5 is provided with two second serial communication modules 54, and the multiple LED light boards 4 are connected in series through the first serial communication module 41; the receiving card 5 is connected to the first serial communication module 41 of the first LED light board 4 through one second serial communication module 54, and the receiving card 5 is connected to the first serial communication module 41 of the last LED light board 4 through another second serial communication module 54; both the first serial communication module 41 and the second serial communication module 54 are TTL serial communication modules to realize data ring transmission.
[0038] Specifically, the receiving card 5 sends the allocation address instruction input by the control card to the MCU module of the first or last LED light board 4. After receiving the address +1, the MCU module of that LED forwards it to the MCU module of the next LED light board 4 to realize address allocation, thereby realizing data transmission.
[0039] Preferably, both the first serial communication module 41 and the second serial communication module 54 are TTL serial communication modules. The TTL serial communication module includes a common ground interface, a TX interface, and an RX interface. That is, the receiving card 5 can achieve communication connection with the LED light board 4 through three signal lines, and the LED light boards 4 can also achieve communication connection with each other through only three signal lines. The required number of communication lines is small, the circuit structure is simple, and the cost is low. Moreover, the serial communication module has few interface pins, occupies little space on the LED light board 4, and has relatively low electrical costs. It is suitable for applications in the field of large-pitch products, such as information boards in the transportation field.
[0040] In summary, this utility model can connect to all the connection cards in the relay processing device through the main communication module and backup communication module of the sending card, respectively, to form the main communication path and backup communication path of the sending card. At the same time, the sending card can communicate with the host computer through any of the first data communication modules. Through multiple data transmission links, the data transmission efficiency and stability between the host computer, the sending card and the receiving card are guaranteed, ensuring that the LED display can still work normally in the face of various line faults, minimizing the display failure rate, thereby ensuring the normal operation of the LED display and improving the user viewing experience.
[0041] Secondly, the LED light board and the receiving card and / or the LED light boards are connected by a serial communication module, which simplifies the circuit structure, reduces the number of wires required, reduces the circuit cost, and also reduces the failure rate of the circuit communication and improves the working stability of the display screen.
[0042] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. An LED display screen control system, characterized in that, It includes a host computer, a sending card, a relay processing device, and an LED light board. The sending card includes a data processing device, a main communication module, a backup communication module, and at least two first data communication modules. The host computer includes a second data communication module that corresponds one-to-one with the first data communication module, and the second data communication module is connected to the first data communication module. The relay processing device includes multiple receiver cards connected in series. Both ends of the relay processing device are connected to the main communication module and the backup communication module, respectively. The receiver cards are connected to several LED light boards. The data processing device is connected to the main communication module, the backup communication module and the first data communication module respectively, and is used to transmit the data signals sent by the host computer to the relay processing device through the main communication module and the backup communication module respectively, and receive the corresponding feedback data returned.
2. The LED display screen control system as described in claim 1, characterized in that, The receiving card includes a first relay communication module and a second relay communication module, wherein the first relay communication module of the former receiving card is connected to the second relay communication module of the latter receiving card; The first relay communication module of the first receiving card is connected to the main communication module, and the second relay communication module of the last receiving card is connected to the backup communication module.
3. The LED display screen control system as described in claim 1 or 2, characterized in that, The data processing device includes a processor and a first FPGA module, both of which are connected to the first data communication module.
4. The LED display screen control system as described in claim 1 or 2, characterized in that, The receiving card is a HUB card, and the receiving card includes a second FPGA module.
5. The LED display screen control system as described in claim 2, characterized in that, The main communication module, backup communication module, first data communication module, second data communication module, first relay communication module, and second relay communication module are all Ethernet interface modules.
6. The LED display screen control system as described in claim 1, characterized in that, The LED light board is equipped with an MCU module and a first serial communication module, and the MCU module is connected to the first serial communication module. The receiving card is equipped with a second serial communication module corresponding to the first serial communication module, and the second serial communication module is connected to the first serial communication module via a ribbon cable.
7. The LED display screen control system as described in claim 6, characterized in that, The receiving card is equipped with multiple second serial port communication modules, and each second serial port communication module is configured to correspond one-to-one with the LED light board. The receiving card is connected to the first serial communication module of the corresponding LED light board through the second serial communication module. Both the first serial communication module and the second serial communication module are dual TTL serial communication modules.
8. The LED display screen control system as described in claim 6, characterized in that, The receiving card is connected to the first serial communication module of the multiple LED light boards respectively through the second serial communication module; Both the first serial communication module and the second serial communication module are RS485 serial communication modules.
9. The LED display screen control system as described in claim 6, characterized in that, The receiving card is equipped with two second serial port communication modules, and the multiple LED light boards are connected in series through the first serial port communication module. The receiving card is connected to the first serial communication module of the first LED light board through a second serial communication module, and the receiving card is connected to the first serial communication module of the last LED light board through another second serial communication module. Both the first serial communication module and the second serial communication module are TTL serial communication modules.
10. The LED display screen control system as described in claim 5, characterized in that, The Ethernet interface is a Gigabit Ethernet interface module.