Automatic screen matching system for LED display screen

Abstract

The utility model discloses an LED display screen automatic screen configuration system, which relates to the technical field of display screens, and comprises a sending card and a plurality of lamp panel modules, each lamp panel module comprises a control card and a plurality of lamp panels; the control card and the lamp panel in the same lamp panel module are connected through a serial port, and the control card is used for receiving lamp panel state information sent by the lamp panel in the same lamp panel module and forwarding the lamp panel state information sent by the lamp panel in the same lamp panel module to the sending card; the sending card is connected with the control card through a gigabit network port, and the sending card is used for receiving and storing the lamp panel state information forwarded by the control card. According to the utility model, the state information of the lamp panel can be automatically transmitted, rapid and accurate screen configuration is realized, the screen configuration efficiency and accuracy are improved, and the labor cost and human errors are reduced.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and in particular to an automatic screen matching system for LED displays. Background Technology

[0002] LED display screen matching is a crucial technical step, involving hardware configuration, parameter adjustment, and software debugging. Whether it's a new installation, hardware replacement, display effect adjustment, or troubleshooting, screen matching is necessary to ensure the normal operation and optimal display effect of the screen.

[0003] Currently, the LED display screen configuration process typically requires manual intervention. Technicians need to manually record the position, size, and other information of each LED panel, and then perform complex configuration and debugging work based on this information. This not only consumes a significant amount of time and manpower but is also prone to human error, leading to inaccurate configuration and affecting the display effect and normal operation of the LED display. For example, during the installation and debugging of large LED displays, due to the large number of LED panels, manual configuration may result in errors such as incorrect recording of panel positions and confused connection relationships, requiring repeated checks and adjustments, which increases the project implementation cycle and cost.

[0004] Furthermore, with the continuous development of LED display technology, the requirements for the accuracy and efficiency of screen matching are becoming increasingly higher, and the traditional manual screen matching method can no longer meet the actual needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an automatic LED display screen matching system that can automatically acquire the status information of the light panels, thereby reducing labor costs and human error.

[0006] To address the aforementioned technical problems, this utility model provides an automatic LED display screen matching system, including a sending card and several lamp board modules. Each lamp board module includes a control card and several lamp boards. The control card and lamp boards within the same lamp board module are connected via a serial port. The control card receives lamp board status information sent by the lamp boards within the same lamp board module and forwards the lamp board status information sent by the lamp boards within the same lamp board module to the sending card. The sending card and control card are connected via a gigabit Ethernet port. The sending card receives and stores the lamp board status information forwarded by the control card.

[0007] As an improvement to the above solution, the lamp board includes a lamp board control circuit, a serial communication circuit, an amplifier circuit, a driver circuit, and a horizontal drive circuit; the serial communication circuit is connected to the lamp board control circuit and is used to communicate serially with the control card in the same lamp board module; the amplifier circuit is connected to the lamp board control circuit and is used to amplify the driver control signal and the horizontal drive control signal output by the lamp board control circuit; the driver circuit is connected to the amplifier circuit and is used to control the switching of the LEDs according to the amplified driver control signal; the horizontal drive circuit is connected to the amplifier circuit and is used to control the horizontal display of the lamp board according to the amplified horizontal drive control signal.

[0008] As an improvement to the above solution, the serial communication circuit includes a serial port chip, which is provided with a main TX interface, a main RX interface, a spare TX interface and a spare RX interface.

[0009] As an improvement to the above solution, the amplification circuit includes a first-stage amplification circuit and a second-stage amplification circuit; the first-stage amplification circuit is connected to the lamp board control circuit and is used to perform first-stage amplification processing on the drive control signal and horizontal output control signal output by the lamp board control circuit; the second-stage amplification circuit and the first-stage amplification circuit are used to perform second-stage amplification processing on the first-stage amplified drive control signal and horizontal output control signal.

[0010] As an improvement to the above solution, the first-stage amplifier circuit includes a first-stage amplifier chip, a first capacitor, and a second capacitor; the first-stage amplifier chip is provided with a first signal pin group, a first power supply pin, a first direction control pin, a first output enable pin, and a first ground pin; the signal pins in the first signal pin group are respectively connected to the lamp board control circuit and the second-stage amplifier circuit; the first power supply pin is grounded through the first capacitor and the second capacitor, and the first direction control pin is grounded through the first capacitor and the second capacitor; the first output enable pin and the first ground pin are respectively grounded.

[0011] As an improvement to the above solution, the secondary amplifier circuit includes a secondary amplifier chip. The secondary amplifier chip is provided with a second signal pin group, a second power supply pin, a second direction control pin, a second output enable pin, and a second ground pin. The signal pins in the second signal pin group are respectively connected to the primary amplifier circuit, the driving circuit, and the horizontal driving circuit. The second power supply pin and the second direction control pin are respectively connected to the power supply. The second output enable pin and the second ground pin are respectively grounded.

[0012] As an improvement to the above solution, the row driving circuit includes a row driving chip, which has a first source pin, a second source pin, a first gate pin, a second gate pin, and four drain pins; the first source pin and the second source pin are respectively connected to a power supply; the first gate pin and the second gate pin are respectively connected to a switching signal; and the drain pins are connected to a light-emitting diode.

[0013] As an improvement to the above solution, the lamp board also includes a blanking circuit, which is connected to the row drive circuit and the light-emitting diode respectively.

[0014] As an improvement to the above solution, the lamp board further includes a voltage conversion circuit connected to the lamp board control circuit. The voltage conversion circuit is used to step down the input voltage to supply power to the lamp board control circuit.

[0015] As an improvement to the above solution, the automatic LED display screen matching system also includes a host computer connected to the sending card.

[0016] The beneficial effects of implementing this utility model are as follows:

[0017] In this utility model of an automatic LED display screen matching system, the control card and the lamp board are connected via a serial port. The control card receives the lamp board status information sent by the lamp board in the same lamp board module and forwards the lamp board status information sent by the lamp board in the same lamp board module to the sending card, thereby realizing point-to-point transmission of lamp board status information, which can effectively improve the matching efficiency and accuracy, and reduce labor costs and human errors.

[0018] Furthermore, the automatic LED display screen matching system of this utility model has improved the circuit structure of the lamp board by setting a serial communication circuit in the lamp board, thereby realizing the serial connection between the control card and the lamp board, and also realizing the real-time forwarding of the lamp board status information.

[0019] Meanwhile, the automatic LED display screen matching system of this utility model also introduces a lamp board control circuit, an amplifier circuit, a driver circuit and a horizontal drive circuit, so that the light-emitting diodes can respond in a timely manner to the drive control signal and the horizontal drive control signal output by the lamp board control circuit. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first embodiment of the automatic screen matching system for LED displays of this utility model;

[0021] Figure 2 This is a schematic diagram of an embodiment of the lamp board in the automatic screen matching system for LED displays of this utility model;

[0022] Figure 3This is a circuit diagram of the lamp board control circuit in the automatic screen matching system for LED displays of this utility model;

[0023] Figure 4 This is a circuit diagram of the serial communication circuit in the automatic screen matching system for LED displays of this utility model;

[0024] Figure 5 This is a circuit diagram of the first-stage amplifier circuit in the automatic screen matching system for LED displays of this utility model;

[0025] Figure 6 This is a circuit diagram of the two-stage amplifier circuit in the automatic screen matching system for LED displays of this utility model;

[0026] Figure 7 This is a circuit diagram of the driving circuit in the automatic screen matching system for LED displays of this utility model;

[0027] Figure 8 This is a circuit diagram of the horizontal drive circuit in the automatic screen matching system for LED displays of this utility model;

[0028] Figure 9 This is a circuit diagram of the blanking circuit in the automatic screen matching system for LED displays of this utility model;

[0029] Figure 10 This is a circuit diagram of the voltage conversion circuit in the automatic screen matching system for LED displays of this utility model;

[0030] Figure 11 This is a schematic diagram of the second embodiment of the automatic screen matching system for LED displays of this utility model. Detailed Implementation

[0031] 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.

[0032] See Figure 1 , Figure 1 The first embodiment of the LED display automatic screen matching system of the present invention is shown, which includes a sending card 1 and several lamp board modules 2, and the lamp board module 2 includes a control card 3 and several lamp boards 4.

[0033] The control card 3 and the lamp board 4 in the same lamp board module 2 are connected via a serial port. The control card 3 is used to receive the lamp board status information sent by the lamp board 4 in the same lamp board module 2, and forward the lamp board status information sent by the lamp board 4 in the same lamp board module 2 to the sending card 1.

[0034] The sending card 1 and the control card 3 are connected via a gigabit network port. The sending card 1 is used to receive and store the light panel status information forwarded by the control card 3.

[0035] In the prior art, the control card 3 and the light board 4 are connected via a 100Mbps Ethernet port. The control card 3 cannot forward the light board status information sent by the light board 4 to the sending card 1. Technicians need to manually record the status information (e.g., location information, size information) of each light board 4. Unlike the prior art, in this invention, the control card 3 and the light board 4 are connected via a serial port. The control card 3 receives the light board status information sent by the light board 4 located in the same light board module 2 and forwards the light board status information sent by the light board 4 located in the same light board module 2 to the sending card 1.

[0036] It should be noted that the sending card 1 can use existing screen matching algorithms to process the lamp board status information in order to realize the screen matching function, such as the screen matching method, device and system, sending card 1 and processor of the display screen in patent CN114566120A, but it is not limited to this, as long as automatic screen matching can be realized.

[0037] Therefore, this utility model improves the connection method between the control card 3 and the lamp board 4, and realizes point-to-point transmission of lamp board status information through serial port. This solves the defect in the prior art that technicians need to manually record the status information of each lamp board 4, and does not require improvement of the screen matching algorithm of the sending card 1. It essentially realizes automatic screen matching of LED display screen and improves work efficiency.

[0038] like Figure 2 As shown, the lamp board 4 includes a lamp board control circuit 41, a serial communication circuit 42, an amplifier circuit 43, a driver circuit 44, and a horizontal drive circuit 45, wherein:

[0039] The serial communication circuit 42 is connected to the lamp board control circuit 41 and is used to communicate serially with the control card 3 in the same lamp board module 2.

[0040] The amplifier circuit 43 is connected to the lamp board control circuit 41 and is used to amplify the drive control signal and horizontal output control signal output by the lamp board control circuit 41.

[0041] The driving circuit 44 is connected to the amplifier circuit 43 and is used to control the switching of the LED according to the amplified driving control signal.

[0042] The horizontal drive circuit 45 is connected to the amplifier circuit 43 and is used to control the horizontal display of the lamp board according to the amplified horizontal control signal.

[0043] Unlike existing technologies, this utility model improves the structure of the lamp board 4 by setting a serial communication circuit 42 in the lamp board 4, thereby realizing the serial connection between the control card 3 and the lamp board 4, and also realizing the real-time forwarding of lamp board status information.

[0044] The following sections, using specific circuit diagrams, provide detailed explanations of the lamp board control circuit 41, serial communication circuit 42, amplifier circuit 43, driver circuit 44, and horizontal drive circuit 45:

[0045] I. Lamp control circuit

[0046] To achieve real-time acquisition of lamp board status information and drive control of LEDs, this utility model introduces a lamp board control circuit.

[0047] like Figure 3 As shown, in this embodiment, the lamp board control circuit 41 includes a main control chip U1A, a fourth resistor R4, and a forty-second resistor R42. The main control chip U1A is preferably GD32F303RCT6, but it is not limited to this. As long as it can realize information / signal acquisition and forwarding, it is acceptable. Its built-in control logic is existing technology and will not be described in detail here.

[0048] II. Serial Communication Circuit

[0049] like Figure 4 As shown, the serial communication circuit 42 includes a serial port chip J1, which has a main TX interface TX0, a main RX interface RX0, a spare TX interface TX1, and a spare RX interface RX1.

[0050] In this embodiment, both a main interface (main TX interface and main RX interface) and a backup interface (backup TX interface and backup RX interface) are set up simultaneously, which can more comprehensively ensure stable transmission between the control card 3 and the lamp board 4 and enhance security.

[0051] III. Amplifier Circuit

[0052] In this embodiment, the amplifier circuit 43 includes a first-stage amplifier circuit and a second-stage amplifier circuit, wherein:

[0053] The first-stage amplifier circuit is connected to the lamp board control circuit 41 and is used to amplify the drive control signal and horizontal output control signal output by the lamp board control circuit 41.

[0054] The two-stage amplifier circuit and the first-stage amplifier circuit are used to perform secondary amplification processing on the drive control signal and horizontal output control signal after the first-stage amplification.

[0055] like Figure 5As shown, the first-stage amplifier circuit includes a first-stage amplifier chip U2, a first capacitor CB1, and a second capacitor CB2. The first-stage amplifier chip U2 is provided with a first signal pin group, a first power supply pin VCC, a first direction control pin A>>B, a first output enable pin E, and a first ground pin GND. Among them, the signal pins (A0~A7, B0~B7) in the first signal pin group are respectively connected to the lamp board control circuit and the second-stage amplifier circuit. The first power supply pin VCC is grounded through the first capacitor CB1 and the second capacitor CB2, and the first direction control pin A>>B is grounded through the first capacitor CB1 and the second capacitor CB2. The first output enable pin E and the first ground pin GND are respectively grounded.

[0056] Furthermore, the signal pins include input signal pins for connecting to the lamp board control circuit 41 and output signal pins for connecting to the secondary amplifier circuit. The signal pins can be connected to different pins in the lamp board control circuit 41 or to the secondary amplifier circuit through different resistors according to the actual situation, which is highly flexible.

[0057] In this embodiment, the primary amplifier chip U2 is preferably a CS245ATP chip, but this is not a limitation and can be selected according to the actual situation.

[0058] like Figure 6 As shown, the secondary amplifier circuit includes a secondary amplifier chip U12. The secondary amplifier chip U12 is provided with a second signal pin group (A0'~A7', B0'~B7'), a second power supply pin VCC', a second direction control pin A'>>B', a second output enable pin E', and a second ground pin GND'. Among them, the signal pins (A0'~A7', B0'~B7') in the second signal pin group can be connected to the primary amplifier circuit, the driver circuit 44, and the horizontal drive circuit 45 according to the actual situation. The second power supply pin VCC' and the second direction control pin A'>>B' are respectively connected to the power supply. The second output enable pin E' and the second ground pin GND' are respectively grounded.

[0059] Accordingly, the secondary amplifier chip U11 is preferably the CS245ATP chip, but this is not a limitation and can be selected according to the actual situation.

[0060] IV. Drive Circuit

[0061] like Figure 7 As shown, the driving circuit 44 is connected to the amplifier circuit and the LED, and is used to control the switching of the LED according to the amplified driving control signal.

[0062] V. Horizontal Drive Circuit

[0063] like Figure 8As shown, the row driving circuit includes a row driving chip UN1. The row driving chip UN1 has a first source pin S1, a second source pin S2, a first gate pin G1, a second gate pin G2, and four drain pins (D1, D2). The first source pin S1 and the second source pin S2 are connected to the power supply, respectively. The first gate pin G1 is connected to the switch signal ROW1, and the second gate pin G2 is connected to the switch signal ROW2. The drain pins are connected to different LEDs.

[0064] Accordingly, the row driver chip UN1 preferably uses the BR4953D-A chip, but this is not a limitation and can be selected according to the actual situation.

[0065] Furthermore, the lamp board 4 also includes a blanking circuit and / or a voltage conversion circuit.

[0066] like Figure 9 As shown, the blanking circuit is connected to the horizontal drive circuit 45 and the LED respectively.

[0067] In this embodiment, the blanking circuit includes a blanking chip AU1, inverters (AU2A, AU3A, AU2B, AU3B, AU2C, AU3C), external resistors (R69~R71, R73~R75, FB2~FB4, ARL1~ARL6), and transistors (QR2~QR6). The blanking circuit is used to eliminate ghosting of the LEDs.

[0068] Accordingly, the driver chip UN1 preferably uses the 74HC139PWRSN chip, but this is not a limitation and can be selected according to the actual situation.

[0069] like Figure 10 As shown, the voltage conversion circuit is connected to the lamp board control circuit 41. The voltage conversion circuit is used to step down the input voltage to supply power to the lamp board control circuit 41.

[0070] In this embodiment, the voltage conversion circuit can convert the 4V input voltage to a 3.3V voltage for use by the lamp board control circuit 41. It includes a step-down chip U5, a Zener diode DB, and capacitors (C126 to C129).

[0071] Accordingly, the TLV1117LV33DCYR chip is preferred for the step-down chip U5, but this is not a limitation and can be selected according to the actual situation.

[0072] Therefore, by introducing a special circuit structure, this utility model realizes the serial port connection between the control card 3 and the lamp board 4, thereby ensuring the real-time forwarding of the lamp board status information, so that the light-emitting diode can respond in a timely manner to the drive control signal and the horizontal output control signal output by the lamp board control circuit 41.

[0073] As can be seen from the above, this utility model can automatically acquire the status information of the light panel, realize fast and accurate screen matching, improve the efficiency and accuracy of screen matching, and reduce labor costs and human errors.

[0074] See Figure 11 , Figure 11 This invention illustrates a second embodiment of the automatic LED display screen matching system, and... Figure 1 Unlike the first embodiment shown, in this embodiment, the automatic LED display screen matching system also includes a host computer 5 connected to the sending card 1.

[0075] During operation, communication can be established between the sending card 1 and the host computer 5 to obtain instructions from the host computer 5 in real time, thereby enabling real-time monitoring by management personnel.

[0076] In summary, this utility model has the following beneficial effects:

[0077] 1. Compared with the traditional manual screen matching method, this utility model can automatically complete the screen matching operation, which greatly shortens the screen matching time and improves work efficiency, and is especially suitable for large-scale and complex LED display screens.

[0078] 2. Reduced manual intervention, avoided human error, improved the accuracy and reliability of screen matching, and ensured the display effect and stability of the LED display screen;

[0079] 3. It reduces the professional requirements for technicians and labor costs, while also reducing rework and repair costs caused by incorrect screen configuration;

[0080] 4. It has good compatibility and scalability, and can adapt to LED displays of different sizes and structures, making it convenient for subsequent upgrades and maintenance.

[0081] 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 automatic LED display screen matching system, characterized in that, It includes a sending card and several light board modules, wherein the light board module includes a control card and several light boards; The control card and the lamp board in the same lamp board module are connected via a serial port. The control card is used to receive the lamp board status information sent by the lamp board in the same lamp board module and forward the lamp board status information sent by the lamp board in the same lamp board module to the sending card. The sending card and the control card are connected via a gigabit network port. The sending card is used to receive and store the light board status information forwarded by the control card.

2. The automatic LED display screen matching system as described in claim 1, characterized in that, The lamp board includes a lamp board control circuit, a serial communication circuit, an amplifier circuit, a driver circuit, and a row driver circuit. The serial communication circuit is connected to the lamp board control circuit and is used to communicate serially with the control card in the same lamp board module. The amplifier circuit is connected to the lamp board control circuit and is used to amplify the drive control signal and horizontal output control signal output by the lamp board control circuit. The driving circuit is connected to the amplification circuit and is used to control the switching of the LED according to the amplified driving control signal. The row drive circuit is connected to the amplifier circuit and is used to control the row display of the lamp board according to the amplified row control signal.

3. The automatic LED display screen matching system as described in claim 2, characterized in that, The serial communication circuit includes a serial port chip, which has a main TX interface, a main RX interface, a backup TX interface, and a backup RX interface.

4. The automatic LED display screen matching system as described in claim 2, characterized in that, The amplifier circuit includes a first-stage amplifier circuit and a second-stage amplifier circuit; The first-stage amplifier circuit is connected to the lamp board control circuit and is used to amplify the drive control signal and horizontal output control signal output by the lamp board control circuit. The secondary amplifier circuit and the primary amplifier circuit are used to perform secondary amplification processing on the drive control signal and the horizontal output control signal after the primary amplification.

5. The automatic LED display screen matching system as described in claim 4, characterized in that, The first-stage amplifier circuit includes a first-stage amplifier chip, a first capacitor, and a second capacitor; The first-stage amplifier chip is provided with a first signal pin group, a first power supply pin, a first direction control pin, a first output enable pin, and a first ground pin; The signal pins in the first signal pin group are respectively connected to the lamp board control circuit and the secondary amplifier circuit; The first power supply pin is grounded through the first capacitor and the second capacitor, and the first direction control pin is grounded through the first capacitor and the second capacitor; The first output enable pin and the first ground pin are grounded respectively.

6. The automatic LED display screen matching system as described in claim 4, characterized in that, The secondary amplifier circuit includes a secondary amplifier chip, which has a second signal pin group, a second power supply pin, a second direction control pin, a second output enable pin, and a second ground pin. The signal pins in the second signal pin group are respectively connected to the first-stage amplifier circuit, the driver circuit, and the horizontal driver circuit; The second power supply pin and the second direction control pin are respectively connected to the power supply; The second output enable pin and the second ground pin are respectively grounded.

7. The automatic LED display screen matching system as described in claim 2, characterized in that, The row driving circuit includes a row driving chip, which has a first source pin, a second source pin, a first gate pin, a second gate pin, and four drain pins. The first source pin and the second source pin are respectively connected to the power supply; The first gate pin and the second gate pin are respectively connected to a switching signal; The drain pin is connected to the LED.

8. The automatic LED display screen matching system as described in claim 2, characterized in that, The light panel also includes a blanking circuit, which is connected to the row drive circuit and the light-emitting diodes respectively.

9. The automatic LED display screen matching system as described in claim 2, characterized in that, The lamp panel also includes a voltage conversion circuit connected to the lamp panel control circuit. The voltage conversion circuit is used to step down the input voltage to supply power to the lamp panel control circuit.

10. The automatic LED display screen matching system as described in claim 1, characterized in that, It also includes a host computer connected to the sending card.

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