CN211930732U - Plug monitoring device of LED display module - Google Patents
Plug monitoring device of LED display module Download PDFInfo
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- CN211930732U CN211930732U CN202020618801.5U CN202020618801U CN211930732U CN 211930732 U CN211930732 U CN 211930732U CN 202020618801 U CN202020618801 U CN 202020618801U CN 211930732 U CN211930732 U CN 211930732U
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Abstract
The utility model discloses a plug monitoring device of LED display module, which comprises an interface DP arranged on N display modules, N interfaces HUB arranged on a transfer board, a signal generating circuit and a plug monitoring circuit, wherein N is more than or equal to 1; the method is characterized in that: the interface DP is provided with two monitoring pins JK0 in short circuit, and the interface HUB is provided with signal input pins JK1 and signal output pins JK2 which correspond to the two monitoring pins JK0 one by one; when N =1, the upper end of the signal input pin JK1 is connected with the signal generating circuit, and the lower end of the signal output pin JK2 is connected with the plugging monitoring circuit; when the interface DP and the interface HUB are separated, the level signal detected by the plugging monitoring circuit changes, and the plugging monitoring circuit forms a feedback signal and forms recording information. The utility model can monitor the plugging and unplugging action of the connector between the display module and the adapter plate, prevent the control signal from being stolen and further protect the private information of the user; the monitoring of a plurality of connectors simultaneously can be realized.
Description
Technical Field
The utility model relates to a LED display screen technical field especially indicates a LED display module's plug monitoring device.
Background
The LED display screen is formed by splicing a plurality of LED display modules. The LED display module comprises a display module and a patch panel, and the display module is connected with the patch panel through a connector and transmits a control signal. The control signal can embody the display picture of the LED display screen, and the display picture relates to the private information of the user.
The existing information theft technology can arrange a stealer between connectors, and then the stealer sends out a control signal to the outside, so as to steal a display picture. In order to prevent the control signal from being stolen, the plugging and unplugging of the plug-in unit needs to be monitored.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is according to the not enough of above-mentioned prior art, provide a LED display module's plug monitoring device, the problem that LED display module's control signal was stolen has been solved.
The technical scheme of the utility model is realized like this:
a plugging monitoring device of an LED display module comprises interfaces DP arranged on N display modules, N interfaces HUB arranged on a patch panel, a signal generating circuit and a plugging monitoring circuit, wherein N is more than or equal to 1; the interface DP is provided with two monitoring pins JK0 in short circuit, and the interface HUB is provided with signal input pins JK1 and signal output pins JK2 which correspond to the two monitoring pins JK0 one by one;
when N =1, the upper end of the signal input pin JK1 is connected with the signal generating circuit, and the lower end of the signal output pin JK2 is connected with the plugging monitoring circuit;
when N > 1, the signal output pin JK2 of last interface HUB and the signal input pin JK1 of next interface HUB are established ties, the signal input pin JK1 upper end of first interface HUB with signal generation circuit connection, the signal output pin JK2 lower extreme of last interface HUB with plug monitoring circuit connection.
Further, the signal generating circuit comprises a pull-up resistor R1 and a power supply BAT 1; the upper end of the pull-up resistor R1 is connected with a power supply BAT1, and the lower end of the pull-up resistor R1 is connected with the signal input pin JK 1; the power supply BAT1 generates a high signal through the pull-up resistor R1.
Furthermore, the plugging monitoring circuit comprises a pull-down resistor R3, a pull-up resistor R2, a single-chip microcomputer MCU and a power supply BAT 2; the upper end of the pull-down resistor R3 is connected with a signal output pin JK2, and the lower end of the pull-down resistor R3 is grounded; the upper end of the pull-up resistor R2 is connected with a signal output pin JK2, and the lower end of the pull-up resistor R2 is connected with the MCU; and the power supply BAT2 is connected with the MCU.
Furthermore, the plugging monitoring circuit further comprises a filter capacitor C1 and a ground pin GND 1; the upper end of the filter capacitor C1 is connected with the lower end of the pull-up resistor R2, and the lower end of the filter capacitor C1 is grounded; the upper end of the grounding pin GND1 is connected with the MCU, and the lower end is grounded.
Further, the interface DP and the interface HUB are both provided with a ground pin GND2, and are grounded through a ground pin GND 2.
Adopt above-mentioned technical scheme, the beneficial effects of the utility model reside in that: (1) the plugging and unplugging action of the connector between the display module and the adapter plate can be monitored, the control signal is prevented from being stolen, and the private information of a user is protected; (2) the monitoring of a plurality of connectors simultaneously can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a first embodiment of the present invention.
Fig. 2 is a schematic diagram of a second embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a first embodiment, a plug monitoring device of LED display module, including setting up in interface DP, the N of N display modules set up in interface HUB, the signal generation circuit and the plug monitoring circuit of keysets, N = 1.
The interface DP is provided with two short-circuited monitoring pins JK0, and the interface HUB is provided with signal input pins JK1 and signal output pins JK2 which correspond to the two monitoring pins JK0 one by one. The upper end of the signal input pin JK1 is connected with a signal generating circuit, and the lower end of the signal output pin JK2 is connected with a plugging monitoring circuit.
The interface DP and the interface HUB are both provided with a grounding pin GND2 and are grounded through a grounding pin GND 2.
The signal generating circuit comprises a pull-up resistor R1 and a power supply BAT 1; the upper end of the pull-up resistor R1 is connected with a power supply BAT1, and the lower end is connected with a signal input pin JK 1; the power supply BAT1 generates a high signal through the pull-up resistor R1.
The plugging monitoring circuit comprises a pull-down resistor R3, a pull-up resistor R2, a single chip microcomputer MCU and a power supply BAT 2; the upper end of the pull-down resistor R3 is connected with a signal output pin JK2, and the lower end is grounded; the upper end of the pull-up resistor R2 is connected with a signal output pin JK2, and the lower end of the pull-up resistor R2 is connected with the MCU; the power supply BAT2 is connected with the single-chip microcomputer MCU. Wherein, singlechip MCU adopts STM32L series chip.
The plugging monitoring circuit further comprises a filter capacitor C1 and a grounding pin GND 1; the upper end of the filter capacitor C1 is connected with the lower end of the pull-up resistor R2, and the lower end is grounded; the upper end of the grounding pin GND1 is connected with the MCU, and the lower end is grounded.
Monitoring principle of the first embodiment: when the interface DP is connected with the interface HUB, the signal input pin JK1 and the signal output pin JK2 are respectively electrically connected with the corresponding monitoring pin JK 0; the high level signal generated by the signal generating circuit enters the plug monitoring circuit through the signal input pin JK1, the monitoring pin JK0 and the signal output pin JK2 and is continuously detected by the plug monitoring circuit. When interface DP and interface HUB separation, pull-down resistance R3 pulls down plug monitoring circuit's level, produces low level signal, and the level signal that plug monitoring circuit detected changes, and plug monitoring circuit forms a feedback signal and forms the record information, interrupts the control signal transmission of whole screen simultaneously, and the feedback relevant information gives the user.
As shown in fig. 2, the present invention provides a second embodiment, a plugging/unplugging monitoring device for LED display module. The second embodiment is different from the first embodiment in that: in a second embodiment, N = 3; last interface HUB's signal output pin JK2 and next interface HUB's signal input pin JK1 establish ties, and first interface HUB's signal input pin JK1 upper end and signal generation circuit connection, last interface HUB's signal output pin JK2 lower extreme and plug monitoring circuit are connected.
Second embodiment monitoring principle: when all interfaces DP and HUB are connected in a one-to-one correspondence manner, the signal input pins JK1 and the signal output pins JK2 are respectively electrically connected with the corresponding monitoring pins JK0, signals generated by the signal generation circuit pass through the signal input pins JK1 and all the monitoring pins JK0 of the first interface HUB, enter the plugging monitoring circuit from the lower end of the signal output pin JK2 of the last interface HUB, and are continuously detected by the plugging monitoring circuit. When arbitrary a set of interface DP and interface HUB separation, pull-down resistance R3 pulls down plug monitoring circuit's level, produces low level signal, and the level signal that plug monitoring circuit detected changes, and plug monitoring circuit forms a feedback signal and forms the record information, interrupts the control signal transmission of whole screen simultaneously, and the feedback relevant information gives the user.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A plugging monitoring device of an LED display module comprises interfaces DP arranged on N display modules, N interfaces HUB arranged on a patch panel, a signal generating circuit and a plugging monitoring circuit, wherein N is more than or equal to 1; the method is characterized in that: the interface DP is provided with two monitoring pins JK0 in short circuit, and the interface HUB is provided with signal input pins JK1 and signal output pins JK2 which correspond to the two monitoring pins JK0 one by one;
when N =1, the upper end of the signal input pin JK1 is connected with the signal generating circuit, and the lower end of the signal output pin JK2 is connected with the plugging monitoring circuit;
when N > 1, the signal output pin JK2 of last interface HUB and the signal input pin JK1 of next interface HUB are established ties, the signal input pin JK1 upper end of first interface HUB with signal generation circuit connection, the signal output pin JK2 lower extreme of last interface HUB with plug monitoring circuit connection.
2. The plugging monitoring device of the LED display module according to claim 1, wherein: the signal generating circuit comprises a pull-up resistor R1 and a power supply BAT 1; the upper end of the pull-up resistor R1 is connected with a power supply BAT1, and the lower end of the pull-up resistor R1 is connected with the signal input pin JK 1; the power supply BAT1 generates a high signal through the pull-up resistor R1.
3. The plugging monitoring device of the LED display module according to claim 1, wherein: the plugging monitoring circuit comprises a pull-down resistor R3, a pull-up resistor R2, a single chip microcomputer MCU and a power supply BAT 2; the upper end of the pull-down resistor R3 is connected with a signal output pin JK2, and the lower end of the pull-down resistor R3 is grounded; the upper end of the pull-up resistor R2 is connected with a signal output pin JK2, and the lower end of the pull-up resistor R2 is connected with the MCU; and the power supply BAT2 is connected with the MCU.
4. A plugging monitoring device for LED display module according to claim 3, wherein: the plugging monitoring circuit further comprises a filter capacitor C1 and a grounding pin GND 1; the upper end of the filter capacitor C1 is connected with the lower end of the pull-up resistor R2, and the lower end of the filter capacitor C1 is grounded; the upper end of the grounding pin GND1 is connected with the MCU, and the lower end is grounded.
5. The plugging monitoring device of the LED display module according to claim 1, wherein: the interface DP and the interface HUB are both provided with a grounding pin GND2 and are grounded through a grounding pin GND 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618801.5U CN211930732U (en) | 2020-04-23 | 2020-04-23 | Plug monitoring device of LED display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020618801.5U CN211930732U (en) | 2020-04-23 | 2020-04-23 | Plug monitoring device of LED display module |
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| Publication Number | Publication Date |
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| CN211930732U true CN211930732U (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020618801.5U Active CN211930732U (en) | 2020-04-23 | 2020-04-23 | Plug monitoring device of LED display module |
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| CN (1) | CN211930732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257869A (en) * | 2021-11-26 | 2022-03-29 | 杭州当虹科技股份有限公司 | Method for monitoring operation safety of propaganda large-screen equipment |
| CN114624635A (en) * | 2022-05-17 | 2022-06-14 | 陕西天视致远航空技术有限公司 | Plug-pull detection system and method of VGA display interface and electronic equipment |
-
2020
- 2020-04-23 CN CN202020618801.5U patent/CN211930732U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114257869A (en) * | 2021-11-26 | 2022-03-29 | 杭州当虹科技股份有限公司 | Method for monitoring operation safety of propaganda large-screen equipment |
| CN114257869B (en) * | 2021-11-26 | 2024-04-16 | 杭州当虹科技股份有限公司 | Operation safety monitoring method for propaganda large screen equipment |
| CN114624635A (en) * | 2022-05-17 | 2022-06-14 | 陕西天视致远航空技术有限公司 | Plug-pull detection system and method of VGA display interface and electronic equipment |
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