CN212967036U - LED display system and control device thereof - Google Patents
LED display system and control device thereof Download PDFInfo
- Publication number
- CN212967036U CN212967036U CN202022186413.7U CN202022186413U CN212967036U CN 212967036 U CN212967036 U CN 212967036U CN 202022186413 U CN202022186413 U CN 202022186413U CN 212967036 U CN212967036 U CN 212967036U
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- receiving card
- card
- display system
- receiving
- led display
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Abstract
The utility model is suitable for a LED shows the field, provides a LED display system and controlling means thereof, and the controlling means includes signal interface module, the first draw-in groove of placing the first receiving card, and the first receiving card receives the signal that comes from the video source through first signal interface; the second card slot is provided with a second receiving card, and the second receiving card receives signals from the video source through a second signal interface; the two receiving cards are connected to the same data buffer, one of the receiving cards serves as a main receiving card to output signals from a video source to the data buffer, and the other receiving card serves as a standby receiving card to output signals from the video source to the data buffer when the main receiving card detects that the main receiving card fails. The utility model provides a when the main card that receives breaks down among LED display system's controlling means, whole LED display system still can normally show, does not influence LED display system's work.
Description
Technical Field
The utility model belongs to the LED shows the field, especially relates to a LED display system and controlling means thereof.
Background
The inside HUB (concentrator) that just has usually of current LED display screen's box, be equipped with the slot and some conventional function interfaces of a receiving card on the HUB, the HUB is used for distributing the control signal of receiving the card output to the seat or the connector of every LED lamp plate.
The disadvantage is that there is usually only one receiving card on the HUB of the LED display system, which may cause the LED display system to fail to display normally if the receiving card fails. Moreover, in the current LED display system, the LED lamp panels are in a cascade structure, when backup is considered, only data signals are usually backed up, and a backup signal needs to be input from the LED lamp panel at the farthest end of the cascade link, which makes field wiring complicated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve guarantees that LED display system still can normally show for how when LED display system receiving card breaks down, does not influence LED display system's work to simplify the backup mode.
In order to solve the above technical problem, in a first aspect, the present invention provides a control device for a LED display system, including:
a signal interface module;
the first card slot is provided with a first receiving card, and the first receiving card receives signals from a video source through the signal interface module;
the second receiving card is placed in the second card slot and receives signals from a video source through the signal interface module;
the first receiving card and the second receiving card are connected to the same data buffer; one of the first and second sink cards is configured to output a signal from a video source to the data buffer as a primary sink card, and the other is configured to output a signal from a video source to the data buffer as a backup sink card when a failure of the primary sink card is detected.
Further, the signal interface module comprises a first signal interface and a second signal interface; the first receiving card is connected with the first signal interface and receives signals from a video source through the first signal interface; the second receiving card is connected with the second signal interface and receives signals from a video source through the second signal interface.
Further, the first receiving card includes a first detection pin, and the first receiving card determines whether to be used as a main receiving card or a standby receiving card according to the read voltage of the first detection pin; the second receiving card includes a second detection pin, and the second receiving card determines whether to be used as a main receiving card or a backup receiving card according to the read voltage of the second detection pin.
Further, the voltage values of the first detection pin and the second detection pin are different.
Further, a signal channel is arranged between the first receiving card and the second receiving card, wherein the party used as the standby receiving card detects the working state of the party used as the main receiving card through the signal channel to judge whether the main receiving card has a fault.
Further, the signal channel is a UART signal channel.
Furthermore, a protection resistor is connected in series between the output end of the first receiving card and the output end of the second receiving card.
Furthermore, the control device also comprises a state indicating module and a test key; the state indicating module is connected with the first receiving card and the second receiving card simultaneously; the test key is connected with the first receiving card and the second receiving card at the same time.
Furthermore, the LED lamp panel interface also comprises a data buffer and an LED lamp panel interface; the data buffer is connected to the output ends of the first receiving card and the second receiving card and used for receiving and buffering signals of the first receiving card or the second receiving card; the LED lamp panel interface is connected with the data buffer and receives signals buffered by the data buffer.
In a second aspect, the present invention also provides a LED display system, including:
at least one control device of the LED display system according to the first aspect;
and the LED lamp boxes are connected with the control devices in a one-to-one correspondence manner, each LED lamp board comprises a plurality of LED lamp boards, and each LED lamp board is controlled by the control device to display.
The utility model provides a contain two receiving cards among LED display system's the controlling means, one of them is as main receiving card, and another is as reserve receiving card, and two receiving cards all are connected the signal in order to receive the video source with the video source. When the main receiving card fails, the standby receiving card outputs the signals of the video source, so that when the main receiving card fails, the other standby receiving card can be used for continuously outputting the signals of the video source, the whole LED display system can still normally display, and the work of the LED display system is not influenced. In addition, the video source signals received by the standby receiving card are identical to those of the main receiving card, and comprise control signals besides image display data signals, so that the backup is realized at the receiving end of the whole display system, and the wiring is simplified.
Drawings
Fig. 1 is a structural diagram of a control device of an LED display system according to a first embodiment of the present invention;
fig. 2 is an application architecture diagram of the control device shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, fig. 1 shows a structure of a control device of an LED display system according to a first embodiment of the present invention, and fig. 2 shows an application architecture of fig. 1.
The video signal output by the video source 11 includes RGB image display signals and control signals, the LED display device 13 may be formed by splicing a plurality of LED boxes, each LED box includes a plurality of LED lamp panels, each LED lamp panel has a plurality of LED light-emitting pixels, and each control device 12 controls one LED box correspondingly, that is, each control device 12 can control a plurality of LED lamp panels correspondingly. Specifically, the control device 12 is configured to receive a signal from the video source 11 and send the signal to the LED lamp panel of the corresponding LED box in the LED display device 13 for display.
The control device 12 includes a first card slot 121, a second card slot 122, a first receiving card 1211 disposed in the first card slot 121, a second receiving card 1222 disposed in the second card slot 122, and a signal interface module disposed on the control device 12 for receiving signals from the video source 11. The signal interface may be a network signal interface, a video signal interface, a fiber optic cable signal interface, or the like.
The first card slot 121 and the second card slot 122 may share a signal interface module, or a signal interface module may be separately provided as shown in fig. 1, in this case, the signal interface module includes a first signal interface 123 and a second signal interface 124, the first signal interface 123 is connected to the first receiving card 1211, the second signal interface 124 is connected to the second receiving card 1222, and both the first signal interface 123 and the second signal interface 124 include a signal inlet and a signal outlet.
The first receiving card 1211 receives signals from a video source through the first signal interface 123, and the second receiving card 1222 receives signals from a video source through the second signal interface 124, as described above, the signals of the video source 11 include image display signals and control signals.
The hardware configuration of the first receiving card 1211 and the second receiving card 1222 may be the same, and the received signals of the video source 11 may be the same, but only one will output the signals to the subsequent devices, and the other will only play a backup role. Specifically, the first receiving card 1211 and the second receiving card 1222 are connected to the same data buffer in the subsequent display device 13, one of the first receiving card 1211 and the second receiving card 1222 is used as a main receiving card to output a signal from the video source 11 to the data buffer, and the other is used as a spare receiving card to output a signal from the video source 11 to the data buffer when the main receiving card is detected to be out of order. Of course, if the failure factor is not considered, the embodiment may also be used normally by placing only the first receiving card 1211 or the second receiving card 1222.
It can be seen from the above description that, in this embodiment, one of the two receiving cards is used as a main receiving card and the other is used as a standby receiving card, when the main receiving card fails, the other standby receiving card can be used to continue outputting signals of the video source, and the whole LED display system can still display normally without affecting the operation of the LED display system. In addition, the video source signal received by the standby receiving card is the same as that of the main receiving card, and comprises a control signal besides an image display data signal, so that the backup can be realized at the receiving end of the whole display system, and the wiring is simplified.
Further, as described above, the first receiving card 1211 and the second receiving card 1222 are respectively provided to be used as the main receiving card and the backup receiving card, and the present embodiment provides two ways to realize such an arrangement:
the first method comprises the following steps: one of the receiving cards is used as a fixed main receiving card, and the other receiving card is used as a fixed standby receiving card, for example, the first receiving card 1211 is used as a fixed main receiving card, and the second receiving card 1222 is used as a fixed standby receiving card.
And the second method comprises the following steps: both receiving cards may be used as main receiving cards or as backup receiving cards, and may be designated as required before operation, for example, in this stage, the first receiving card 1211 is used as the main receiving card, the second receiving card 1222 is used as the backup receiving card, and in the next stage, the angle tones are changed to use the second receiving card 1222 as the main receiving card and the first receiving card 1211 as the backup receiving card. This approach requires that both receiving cards be able to know whether they belong to the primary or the alternate receiving card. As an implementation manner, if the first receiving card 1211 includes the first detection pin Is _ master1 as shown in fig. 2, the first receiving card 1211 determines whether to be used as the main receiving card or the standby receiving card according to the read voltage of the first detection pin Is _ master 1. Similarly, the second receiving card 1222 includes a second detection pin Is _ master2, and the second receiving card 1222 determines whether to be used as a main receiving card or a spare receiving card according to the read voltage of the second detection pin Is _ master 2. Different voltage values can be provided for the first detection pin Is _ master1 and the second detection pin Is _ master2, the two receiving cards are judged according to the voltage values of the first detection pin Is _ master1 and the second detection pin Is _ master2 respectively, the first receiving card 1211 Is defined as a main receiving card when the voltage of the first detection pin Is _ master1 Is read to be VCC, the voltage of the second detection pin Is _ master2 Is GND, and the second receiving card 1222 Is defined as a standby receiving card.
Further, a signal channel is provided between the first receiving card 1211 and the second receiving card 1222, as shown in fig. 2, a UART (Universal Asynchronous Receiver/Transmitter) signal channel may be adopted, wherein a party acting as a standby receiving card detects an operating state of a party acting as a main receiving card through the signal channel to determine whether the main receiving card has a failure, specifically, the party acting as the main receiving card may send a status signal to the party acting as the standby receiving card continuously or periodically in real time, or may send a failure notification signal to the party acting as the standby receiving card when the party acting as the main receiving card has a failure.
Further, in order to prevent the unexpected situation that the first receiving card 1211 and the second receiving card 1222 output signals at the same time and the output levels of the two receiving cards are not consistent, so that the two receiving cards are short-circuited to burn out the receiving cards, protection resistors R1 and R2 are connected in series between the output terminal of the first receiving card 1211 and the output terminal of the second receiving card 1222 in this embodiment, so as to increase the resistance between the two receiving cards, so that the short-circuit current is reduced when an unexpected occurrence occurs.
Further, the control device 12 further includes a status indication module 125, and the status indication module 124 is connected to the first receiving card 1211 and the second receiving card 1222 simultaneously, and is used for indicating the operating status of the two receiving cards, which may be implemented by using an indicator light.
Further, the control device 12 further comprises a test key 126, and the test key 126 is connected to both the first receiving card 1211 and the second receiving card 1222, and is used as a control key during testing.
Further, the control device 12 further includes a data buffer 127 and an LED lamp panel interface 128, which are connected to the output terminals of the first receiving card 1211 and the second receiving card 1222, and are used for receiving and buffering the signal of the first receiving card 1211 or the second receiving card 1222, and specifically, a buffer 245 controlled by an enable signal may be selected.
The LED lamp panel interface 128 is connected to the data buffer 127, and receives the signal buffered by the data buffer 127. The lamp panel interface 128 may be a board-to-board interface to enable a hard connection between the control device 12 and the lamp panel, avoiding the use of cables. The lamp panel interface 128 may transmit not only the signal from the video source 11 but also a power supply signal, that is, the control device 12 may receive both the signal from the video source 11 and the power supply signal from the power supply.
A second embodiment of the present invention provides a LED display system, including:
the LED lamp box is connected with the control device in a one-to-one correspondence mode, the LED lamp box comprises a plurality of LED lamp panels, and each LED lamp panel is controlled by the control device to display.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A control apparatus for an LED display system, comprising:
a signal interface module;
the first card slot is provided with a first receiving card, and the first receiving card receives signals from a video source through the signal interface module;
the second receiving card is placed in the second card slot and receives signals from a video source through the signal interface module;
the first receiving card and the second receiving card are connected to the same data buffer; one of the first and second sink cards is configured to output a signal from a video source to the data buffer as a primary sink card, and the other is configured to output a signal from a video source to the data buffer as a backup sink card when a failure of the primary sink card is detected.
2. The control apparatus of the LED display system of claim 1, wherein the signal interface module comprises a first signal interface and a second signal interface;
the first receiving card is connected with the first signal interface and receives signals from a video source through the first signal interface;
the second receiving card is connected with the second signal interface and receives signals from a video source through the second signal interface.
3. The control device of the LED display system according to claim 1, wherein the first receiving card includes a first detection pin, and the first receiving card determines whether to be used as a main receiving card or a backup receiving card according to the read voltage of the first detection pin;
the second receiving card includes a second detection pin, and the second receiving card determines whether to be used as a main receiving card or a backup receiving card according to the read voltage of the second detection pin.
4. The control apparatus of LED display system of claim 3, wherein the first detection pin and the second detection pin have different voltage values.
5. The control apparatus of an LED display system according to any one of claims 1 to 4, wherein a signal path is provided between the first receiving card and the second receiving card, and wherein a side serving as a standby receiving card detects an operating state of a side serving as a main receiving card through the signal path to determine whether the main receiving card malfunctions.
6. The control apparatus of LED display system of claim 5, wherein the signal channel is a UART signal channel.
7. The control apparatus of an LED display system according to any one of claims 1 to 4, wherein a protection resistor is connected in series between an output terminal of the first receiving card and an output terminal of the second receiving card.
8. The control device of the LED display system of any one of claims 1 to 4, further comprising a status indication module and a test key; the state indicating module is connected with the first receiving card and the second receiving card simultaneously; the test key is connected with the first receiving card and the second receiving card at the same time.
9. The control device of the LED display system according to any one of claims 1 to 4, further comprising a data buffer and an LED light panel interface;
the data buffer is connected to the output ends of the first receiving card and the second receiving card and used for receiving and buffering signals of the first receiving card or the second receiving card;
the LED lamp panel interface is connected with the data buffer and receives signals buffered by the data buffer.
10. An LED display system, comprising:
control means of at least one LED display system as claimed in any one of claims 1 to 9;
and the LED lamp boxes are connected with the control devices in a one-to-one correspondence manner, each LED lamp board comprises a plurality of LED lamp boards, and each LED lamp board is controlled by the control device to display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022186413.7U CN212967036U (en) | 2020-09-29 | 2020-09-29 | LED display system and control device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022186413.7U CN212967036U (en) | 2020-09-29 | 2020-09-29 | LED display system and control device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212967036U true CN212967036U (en) | 2021-04-13 |
Family
ID=75371296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022186413.7U Expired - Fee Related CN212967036U (en) | 2020-09-29 | 2020-09-29 | LED display system and control device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212967036U (en) |
-
2020
- 2020-09-29 CN CN202022186413.7U patent/CN212967036U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210413 Termination date: 20210929 |
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| CF01 | Termination of patent right due to non-payment of annual fee |