Intelligent LED display screen capable of being used as soon as being powered on

Abstract

The utility model belongs to the technical field of LED display, and relates to a power-on intelligent LED display screen, an intelligent module comprises an MCU control unit, a Flash storage unit and a UART communication decoding unit, control system configuration parameters of a display box body are stored in the Flash storage unit, and when the MCU control unit is in communication connection with a control card of the display box body through the UART communication decoding unit, the control system configuration parameters of the display box body are stored in the Flash storage unit. Control system configuration parameters in the Flash storage unit can cover the control card, so that the LED display screen can be used after being powered on; the LED display box has the beneficial effects that no matter whether the arrangement mode or the connection mode of the display box is changed or the control card has faults and needs to be replaced, professional engineering technicians do not need to reset configuration parameters of a control system, the LED display box is convenient to install, maintain and operate, and the technical problem that an existing LED display box is troublesome in field installation, maintenance and operation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to a smart LED display screen that can be used immediately upon power-on. Background Art

[0002] The current LED display screen module is mainly composed of a driving circuit, LED light-emitting devices, and an external assembly shell, and needs to be connected to an LED receiving card control system and a power supply. Several modules form a display unit box, each unit box has one or more receiving card control systems and a power supply, and then multiple unit boxes form a large screen. Each receiving card control system needs to be connected to the LED sending card or video processor of the host computer, and then the LED-specific control software is used to set the relevant parameters, and then the set parameters are sent and saved to the receiving card control system of each unit box.

[0003] Since the LED display screen modules of different manufacturers have different dot pitch, module resolution, driver IC, and unit cabinet arrangement, professional engineers are required to set and save the relevant parameters before leaving the factory. In the actual installation and use process, the receiving card control system may fail, and customers may increase or decrease the number and arrangement of LED unit cabinets at any time according to the size of the site. Therefore, professionals are required to debug and resend the unit cabinet configuration parameters and display connection configuration parameters of the display screen every time. Therefore, whether it is to change the arrangement of the display cabinet or the connection method of the cabinet, or to replace the control card due to a fault, professional engineering and technical personnel are required to set the parameters again and send them to the receiving card control system of the unit cabinet. The operation is cumbersome and not conducive to the rapid replacement of the display cabinet or troubleshooting on site. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a smart LED display screen that can be used immediately upon power-on, which solves the technical problem of the troublesome on-site installation and maintenance of the existing LED display cabinet.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] The utility model provides a smart LED display screen that can be used immediately after power-on, comprising a plurality of display boxes, wherein the display boxes include LED display modules and smart modules arranged on the LED display modules;

[0009] The smart module includes an MCU control unit, a Flash storage unit and a UART communication decoding unit. The Flash storage unit stores the control system configuration parameters of the display box. The MCU control unit communicates with the control card of the display box through the UART communication decoding unit to overwrite the control system configuration parameters in the Flash storage unit to the control card, so that the LED display can be used as soon as it is powered on.

[0010] Optionally, the PA4 pin of the MCU control unit is connected to the CS pin of the Flash storage unit, the PA5 pin of the MCU control unit is connected to the SCK pin of the Flash storage unit, the PA6 pin of the MCU control unit is connected to the SO pin of the Flash storage unit, and the PA7 pin of the MCU control unit is connected to the SI pin of the Flash storage unit;

[0011] UART_RX and UART_TX in the MCU control unit are respectively connected to two output pins in the UART communication decoding unit, and the input pin in the UART communication decoding unit is connected to the control card.

[0012] Optionally, the smart module also includes a locking circuit, one end of which is connected to the PA2 pin of the MCU control unit, and the other end is connected to the EN pin or OE pin of the bus driver IC of the LED display module.

[0013] Optionally, the locking circuit includes an N-type transistor, a resistor R1, a resistor R2 and a resistor R3, and the output pin of the N-type transistor is connected to the bus driver IC and the VCC power supply;

[0014] When the MCU control unit executes the encryption lock command, the PA2 pin outputs a low level, the N-type transistor is turned off, the EN pin or OE pin of the bus driver IC is at a high level and the output is turned off, the LED display module does not receive a control signal, and the black screen lock function is achieved.

[0015] Optionally, the smart module further includes a power supply circuit, and the power supply circuit includes a linear regulator.

[0016] Optionally, the VCC power supply is 5V, and the power supply voltage output by the power supply circuit is 3.3V.

[0017] Optionally, the smart module also includes a program download port, the MCUNRST pin of the program download port is connected to the NRST input pin of the MCU control unit; its ICESWDAT pin is connected to the PA13 input pin of the MCU control unit; and its ICESWCLK pin is connected to the PA14 input pin of the MCU control unit.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] 1. The utility model is a power-on and ready-to-use intelligent LED display screen. The intelligent module includes an MCU control unit, a Flash storage unit and a UART communication decoding unit. The Flash storage unit stores the control system configuration parameters of the display box. When the MCU control unit is connected to the control card of the display box through the UART communication decoding unit, the control system configuration parameters in the Flash storage unit will be overwritten to the control card, so that the LED display screen can be powered on and ready to use. Compared with the prior art, no matter whether the arrangement or connection mode of the display box is changed, or the control card fails and needs to be replaced, professional engineering and technical personnel are no longer required to reset the control system configuration parameters and send them to the control card control system of the unit box for storage. The installation and maintenance operations are convenient, which solves the technical problem of the troublesome on-site installation and maintenance operations of the existing LED display box.

[0021] 2. The utility model provides a smart LED display screen that can be used as soon as it is powered on. Since the smart module is provided with a locking circuit, when the MCU control unit executes the encrypted locking command, the black screen lock function of the display module is realized through the locking circuit, which is suitable for various scenarios such as leasing or installment payment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a smart module of Embodiment 1 of a power-on-and-use smart LED display screen of the utility model;

[0023] Figure 2 This is a schematic diagram of the principle of an LED display screen that can be used immediately upon powering up, in Embodiment 1 of the utility model;

[0024] Figure 3 This is a schematic diagram of the MCU control unit circuit of Embodiment 1 of the utility model, which is a smart LED display screen that can be used immediately upon powering on;

[0025] Figure 4 This is a schematic diagram of a Flash storage unit circuit of Embodiment 1 of a power-on, ready-to-use smart LED display screen of the utility model;

[0026] Figure 5 This is a schematic diagram of a program download port circuit of Embodiment 1 of a power-on, ready-to-use smart LED display screen of the utility model;

[0027] Figure 6 This is a schematic diagram of a UART communication decoding unit circuit of Embodiment 1 of a power-on, ready-to-use smart LED display screen of the utility model;

[0028] Figure 7The utility model is a schematic diagram of a power supply circuit of a power-on-and-use smart LED display screen according to embodiment 1.

[0029] [Description of Reference Numerals]

[0030] 101. MCU control unit;

[0031] 102. Flash storage unit;

[0032] 103. Program download port;

[0033] 104. UART communication decoding unit;

[0034] 105. Power supply circuit;

[0035] 106. Locking circuit;

[0036] 200, control card;

[0037] 300. LED display module. DETAILED DESCRIPTION

[0038] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0039] The utility model provides a power-on, ready-to-use smart LED display screen, wherein the smart module comprises an MCU control unit, a Flash storage unit and a UART communication decoding unit, wherein the Flash storage unit stores control system configuration parameters of a display box, and when the MCU control unit is connected to a control card of the display box through the UART communication decoding unit, the control system configuration parameters in the Flash storage unit will be overwritten on the control card, thereby realizing that the LED display screen can be powered on and ready to use; compared with the prior art, no matter the arrangement or connection mode of the display box is changed, or the control card fails and needs to be replaced, it is no longer necessary for professional engineering and technical personnel to reset the control system configuration parameters and send and store them in the control card control system of the unit box, and the installation and maintenance operations are convenient, thereby solving the technical problem of troublesome on-site installation and maintenance operations of the prior art LED display box.

[0040] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0041] Example:

[0042] The present embodiment provides a smart LED display screen that is ready for use as soon as it is powered on, including a plurality of display boxes, wherein the display boxes include an LED display module 300 and a smart module disposed on the LED display module 300 .

[0043] Reference Figure 1 and Figure 2 The smart module includes an MCU control unit 101, a Flash storage unit 102 and a UART communication decoding unit 104. The Flash storage unit 102 stores the control system configuration parameters of the display box. The MCU control unit 101 is connected to the control card 200 of the display box through the UART communication decoding unit 104 to overwrite the control system configuration parameters in the Flash storage unit 102 to the control card 200, so that the LED display screen can be used immediately after power-on.

[0044] See also Figure 3 and Figure 4 , the PA4 pin of the MCU control unit 101 is connected to the CS pin of the Flash storage unit 102, the PA5 pin of the MCU control unit 101 is connected to the SCK pin of the Flash storage unit 102, the PA6 pin of the MCU control unit 101 is connected to the SO pin of the Flash storage unit 102, and the PA7 pin of the MCU control unit 101 is connected to the SI pin of the Flash storage unit 102;

[0045] See also Figure 3 and Figure 6 , UART_RX and UART_TX in the MCU control unit 101 are respectively connected to the two output pins in the UART communication decoding unit 104 , and the input pins in the UART communication decoding unit 104 are connected to the control card 200 .

[0046] See also Figure 3 and Figure 4 The smart module also includes a locking circuit 106 , one end of which is connected to the PA2 pin of the MCU control unit 101 , and the other end is connected to the EN pin or the OE pin of the bus driver IC of the LED display module 300 .

[0047] See also Figure 3 The locking circuit 106 includes an N-type transistor, a resistor R1, a resistor R2 and a resistor R3, and the output pin of the N-type transistor is connected to the bus driver IC and the VCC power supply.

[0048] When the MCU control unit 101 executes the encryption lock instruction, the PA2 pin outputs a low level, the N-type transistor is turned off, the level of the EN pin or OE pin of the bus driver IC is high and the output is turned off. Therefore, other driver ICs on the LED display module 300 cannot receive the control signal, thereby realizing the black screen lock function.

[0049] See also Figure 7 , the smart module also includes a power supply circuit 105. The power supply circuit 105 includes: a linear regulator, a first voltage stabilizing capacitor CF1, a second voltage stabilizing capacitor CF2 and a third capacitor C6;

[0050] The VCC power supply is connected to the VIN input pin of the linear regulator and the negative electrode of the first voltage stabilizing capacitor CF1 respectively, and the OUT1 output pin and the OUT2 output pin of the linear regulator are connected to the negative electrode of the second voltage stabilizing capacitor CF2 respectively;

[0051] The positive electrode of the first voltage-stabilizing capacitor CF1 is connected to the ground terminal in the linear regulator, and the positive electrode of the first voltage-stabilizing capacitor CF1 is grounded; the positive electrode of the second voltage-stabilizing capacitor CF2 is connected to one end of the third capacitor C6 and is grounded, and the other end of the third capacitor C6 is connected to the negative electrode of the second voltage-stabilizing capacitor CF2 and the output interface of the power supply.

[0052] In actual application, the VCC power supply is 5V, and the power supply voltage output by the power supply circuit 105 is 3.3V.

[0053] See also Figure 5 As a feasible solution, the smart module further includes a program download port 103, which can be a connector. The MCUNRST pin of the program download port 103 is connected to the NRST input pin of the MCU control unit 101; its ICESWDAT pin is connected to the PA13 input pin of the MCU control unit 101; and its ICESWCLK pin is connected to the PA14 input pin of the MCU control unit 101.

[0054] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0057] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A smart LED display screen that can be used immediately upon power on, comprising a plurality of display boxes, characterized in that: The display box comprises an LED display module (300) and a smart module arranged on the LED display module (300); The smart module comprises an MCU control unit (101), a Flash storage unit (102) and a UART communication decoding unit (104); the Flash storage unit (102) stores control system configuration parameters of the display box; the MCU control unit (101) is connected to a control card (200) of the display box through the UART communication decoding unit (104) so ​​as to overwrite the control system configuration parameters in the Flash storage unit (102) to the control card (200), thereby realizing that the LED display screen is ready for use as soon as it is powered on.

2. The smart LED display screen that can be used immediately upon power-up as claimed in claim 1, characterized in that: The PA4 pin of the MCU control unit (101) is connected to the CS pin of the Flash storage unit (102), the PA5 pin of the MCU control unit (101) is connected to the SCK pin of the Flash storage unit (102), the PA6 pin of the MCU control unit (101) is connected to the SO pin of the Flash storage unit (102), and the PA7 pin of the MCU control unit (101) is connected to the SI pin of the Flash storage unit (102); UART_RX and UART_TX in the MCU control unit (101) are respectively connected to two output pins in the UART communication decoding unit (104), and the input pins in the UART communication decoding unit (104) are connected to the control card (200).

3. The smart LED display screen that can be used immediately upon power-up as claimed in claim 2, characterized in that: The smart module also includes a locking circuit (106), one end of which is connected to the PA2 pin of the MCU control unit (101), and the other end of which is connected to the EN pin or the OE pin of the bus driver IC of the LED display module (300).

4. The smart LED display screen that can be used immediately upon power-up as claimed in claim 3, characterized in that: The locking circuit (106) comprises an N-type transistor, a resistor R1, a resistor R2 and a resistor R3, and the output pin of the N-type transistor is connected to the bus driver IC and a VCC power supply; When the MCU control unit (101) executes the encryption lock instruction, the PA2 pin outputs a low level, the N-type transistor is turned off, the level of the EN pin or the OE pin of the bus driver IC is high and the output is turned off, the LED display module (300) receives no control signal, and the black screen lock function is achieved.

5. The smart LED display screen that can be used immediately upon power-up as claimed in claim 4, characterized in that: The smart module further comprises a power supply circuit (105), wherein the power supply circuit (105) comprises a linear regulator.

6. The smart LED display screen that can be used immediately upon power-up as claimed in claim 5, characterized in that: The VCC power supply is 5V, and the power supply voltage output by the power supply circuit (105) is 3.3V.

7. The smart LED display screen that can be used immediately upon power-up as claimed in claim 1, characterized in that: The smart module also includes a program download port (103), wherein the MCUNRST pin of the program download port (103) is connected to the NRST input pin of the MCU control unit (101); its ICESWDAT pin is connected to the PA13 input pin of the MCU control unit (101); and its ICESWCLK pin is connected to the PA14 input pin of the MCU control unit (101).

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