CN221995299U - A power supply monitoring circuit for LED display screen and LED display screen - Google Patents
A power supply monitoring circuit for LED display screen and LED display screen Download PDFInfo
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- CN221995299U CN221995299U CN202323379055.1U CN202323379055U CN221995299U CN 221995299 U CN221995299 U CN 221995299U CN 202323379055 U CN202323379055 U CN 202323379055U CN 221995299 U CN221995299 U CN 221995299U
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Abstract
The utility model discloses a power supply monitoring circuit for an LED display screen, which comprises a power supply unit, a monitoring unit and a signal processing unit, wherein the power supply unit comprises at least two monitoring voltage output ends, the monitoring unit comprises an AND gate module, the AND gate module comprises at least two input ends and output ends, the at least two input ends of the AND gate module are respectively connected with the at least two monitoring voltage output ends in a one-to-one matching way, and the output end of the AND gate module is connected with the signal processing unit. The power supply monitoring circuit disclosed by the utility model can monitor the multipath output voltage of the LED display screen power supply unit, and has the advantages of simple structure and low cost. The utility model also discloses an LED display screen which comprises the power supply monitoring circuit.
Description
Technical Field
The utility model relates to the technical field of LED display, in particular to a power supply monitoring circuit for an LED display screen and the LED display screen.
Background
Along with the high-speed development of communication and electronic technology, the application of the LED display screen is increasingly wide, the current LED display screen is often applied to application scenes such as large-scale sports events, large-scale performances, live broadcasting and the like, and the application scenes have high requirements on the reliability of the LED display screen, so that in order to ensure the reliability of a power module of the current LED display screen, a power unit of the LED display screen is usually provided with multiple output voltages, and the LED display screen also needs to monitor the multiple output voltages.
However, it has been found through the study of the inventor that in order to realize the function of controlling the multiple output voltages of the power supply unit, currently, researchers generally choose to set chip selection chips in the LED display screen or increase the number of control cards of the display screen to match and satisfy the power supply monitoring detection, however, it may lead to complex design of the matching circuit of the LED display screen and increase the production cost.
Disclosure of utility model
The technical problems to be solved by the utility model are as follows: the power supply monitoring circuit for the LED display screen and the LED display screen are provided, so that the problems of complex circuit design and high cost in monitoring of multiple output power supplies by the existing LED display screen are solved.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a power supply monitoring circuit for LED display screen, its includes power supply unit, monitor unit and signal processing unit, power supply unit includes two at least control voltage output, the monitor unit includes AND gate module, AND gate module includes two at least input and output, just at least two of AND gate module the input respectively with two at least monitor voltage output one-to-one matching connection, the output of AND gate module with signal processing unit connects.
Further, the power supply unit comprises a first power supply module, the first power supply module comprises a first monitoring voltage output end and a second monitoring voltage output end, the AND gate module comprises a first AND gate, the first AND gate comprises a first input end, a second input end and a first output end, the first input end is connected with the first monitoring voltage output end, the second input end is connected with the second monitoring voltage output end, and the first output end is connected with the signal processing unit.
Further, the power supply unit further comprises a second power supply module, and the AND gate module further comprises a second AND gate correspondingly connected with the second power supply module; the second power module comprises a third monitoring voltage output end and a fourth monitoring voltage output end, the second AND gate comprises a third input end, a fourth input end and a second output end, the third input end is connected with the third monitoring voltage output end, the fourth input end is connected with the fourth monitoring voltage output end, and the second output end is connected with the signal processing unit.
Further, the monitoring unit comprises at least two input stabilizing circuits, the input ends of the at least two input stabilizing circuits are respectively connected with the at least two monitoring voltage output ends in a one-to-one matching mode, and the output ends of the at least two input stabilizing circuits are connected with the at least two input ends of the AND gate module in a one-to-one matching mode.
Further, the monitoring unit further comprises an output stabilizing circuit, the input end of the output stabilizing circuit is connected with the output end of the AND gate module, and the output end of the output stabilizing circuit is connected with the signal processing unit.
Further, the monitoring unit further comprises a connector, and the connector is electrically connected with the power supply unit and the AND gate module.
Further, the AND gate module is a 74HC08 AND gate chip.
Further, the signal processing unit comprises a receiving card, and the receiving card is connected with the output end of the AND gate module.
Further, the power supply monitoring circuit further comprises a display unit for displaying the monitoring result of the power supply monitoring circuit, and the signal processing unit further comprises a sending card which is connected with the receiving card and the display unit respectively.
An LED display screen comprises the power supply monitoring circuit.
The utility model has the beneficial effects that: the power supply monitoring circuit monitors a plurality of monitoring voltages of the power supply unit by using the AND gate module, has a simple circuit structure, and has high logic judgment reliability of the AND gate module, so that the performance of the power supply monitoring circuit is stable and reliable; in addition, the power supply monitoring circuit does not need to set chip selection chips or increase the number of display screen control cards to match and meet the power supply monitoring detection, and is beneficial to reducing the production and manufacturing cost of the LED display screen.
Drawings
FIG. 1 is a schematic diagram of such a power monitoring circuit according to the present utility model in one embodiment;
FIG. 2 is a schematic diagram of the monitoring unit in FIG. 1;
Description of the reference numerals:
1. A power supply unit; 11. a first power module; 111. a first monitor voltage output terminal; 112. a second monitor voltage output terminal; 12. a second power module; 121. a third monitor voltage output terminal; 122. a fourth monitor voltage output terminal;
2. A monitoring unit; 21. an AND gate module; 211. a first AND gate; 212. a second AND gate; 22. an input stabilizing circuit; 23. an output stabilizing circuit;
3. a signal processing unit; 31. receiving a card; 32. sending a card;
4. And a display unit.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, a power supply monitoring circuit for an LED display screen includes a power supply unit 1, a monitoring unit 2 and a signal processing unit 3, where the power supply unit 1 includes at least two monitoring voltage output ends, the monitoring unit 2 includes an and gate module 21, the and gate module 21 includes at least two input ends and output ends, at least two input ends of the and gate module 21 are respectively connected with at least two monitoring voltage output ends in a one-to-one matching manner, and an output end of the and gate module 21 is connected with the signal processing unit 3.
The working principle of the utility model is briefly described as follows: in a preferred embodiment, the power supply monitoring circuit of the present utility model may be applied to an LED display screen, and the power supply unit 1 includes two output voltages, so that the power supply unit 1 is provided with a first monitored voltage output terminal 111 and a second monitored voltage output terminal 112 corresponding to the two output voltages, and the and gate module 21 includes a first and gate 211 input terminal connected to the first monitored voltage output terminal 111 and a second and gate 212 input terminal connected to the second monitored voltage output terminal 112;
In practical application, when any power supply voltage of the power supply unit 1 is normal, the monitoring signal output by the corresponding monitoring voltage output end is a high-level signal; therefore, when the two paths of power supply voltages of the power supply unit 1 are normal, the first monitor voltage output end 111 and the second monitor voltage output end 112 of the power supply unit 1 both output high-level signals, the and gate module 21 can make and logic judgment and output a logic judgment signal as the high-level signal, the logic judgment signal is captured by the signal processing unit 3 for signal processing, and the signal processing unit 3 can display the normal power supply identifier on the monitor through corresponding software;
When any one path of power supply voltage of the power supply unit 1 is abnormal, the monitoring signal output by the monitoring unit 2 by the corresponding monitoring voltage output end is a low-level signal; therefore, when any one or both of the first monitor voltage output terminal 111 and the second monitor voltage output terminal 112 of the power supply unit 1 outputs a low level signal, the and gate module 21 performs an and logic determination and outputs a logic determination signal as a low level signal, the logic determination signal is captured by the signal processing unit 3 and is subjected to signal processing, and the signal processing unit 3 can display a power supply abnormality identifier on the monitor through corresponding software.
The power supply monitoring circuit of the utility model only needs to connect each monitoring voltage output end of the power supply unit 1 with each input end of the AND gate unit in a one-to-one matching way, and does not need to match power supply monitoring detection by arranging chip selection chips or increasing the number of display screen control cards.
As can be seen from the above description, the power supply monitoring circuit according to the present utility model monitors a plurality of monitoring voltages of the power supply unit 1 by using the and gate module 21, and has a simple circuit structure, and the and gate module 21 has high logic judgment reliability, so that the performance of the power supply monitoring circuit is stable and reliable; in addition, the power supply monitoring circuit does not need to set chip selection chips or increase the number of display screen control cards to match and meet the power supply monitoring detection, and is beneficial to reducing the production and manufacturing cost of the LED display screen.
Further, the power supply unit 1 includes a first power supply module 11, the first power supply module 11 includes a first monitor voltage output end 111 and a second monitor voltage output end 112, the and gate module 21 includes a first and gate 211, the first and gate 211 includes a first input end, a second input end and a first output end, the first input end is connected with the first monitor voltage output end 111, the second input end is connected with the second monitor voltage output end 112, and the first output end is connected with the signal processing unit 3.
As can be seen from the above description, when the LED display screen is provided with a single power module and the power module has multiple power outputs, the power monitoring circuit according to the present utility model can monitor multiple power sources of the power module.
Further, the power supply unit 1 further includes a second power supply module 12, and the and gate module 21 further includes a second and gate 212 correspondingly connected to the second power supply module 12; the second power module 12 includes a third monitor voltage output end 121 and a fourth monitor voltage output end 122, the second and gate 212 includes a third input end, a fourth input end and a second output end, the third input end is connected with the third monitor voltage output end 121, the fourth input end is connected with the fourth monitor voltage output end 122, and the second output end is connected with the signal processing unit 3.
As can be seen from the above description, when the LED display screen is provided with a plurality of power modules and the power modules have multiple power outputs, the power monitoring circuit according to the present utility model can perform multiple power monitoring on the power modules respectively; in some preferred embodiments of the present utility model, the first power module 11 may be a main power module, the second power modules 12 may be standby power modules, and the number of the second power modules 12 may be provided in plurality, and accordingly, the and gate modules 21 may be provided with the number of the second and gates 212 corresponding to the number of the second power modules 12 such that each second and gate 212 is matched with each second power module 12 one by one.
Further, the monitoring unit 2 includes at least two input stabilizing circuits 22, the input ends of the at least two input stabilizing circuits 22 are respectively connected with at least two monitoring voltage output ends in a one-to-one matching manner, and the output ends of the at least two input stabilizing circuits 22 are connected with at least two input ends of the and gate module in a one-to-one matching manner.
As is apparent from the above description, the input stabilizing circuit 22 is provided between the monitor voltage output terminal and the input terminal of the and gate module 21, so that the monitor signal received by the and gate module 21 from the monitor voltage output terminal is more stable, and thus the reliability of the identification level signal of the and gate module 21 is higher.
Further, the monitoring unit 2 further includes an output stabilizing circuit 23, an input end of the output stabilizing circuit 23 is connected to an output end of the and gate module 21, and an output end of the output stabilizing circuit 23 is connected to the signal processing unit 3.
As is apparent from the above description, the output stabilizing circuit 23 is provided between the output terminal of the and gate module 21 and the input terminal of the signal processing unit 3, so that the logic determination signal received by the signal processing unit 3 from the output terminal of the and gate module 21 is more stable, thereby making the reliability of the signal processing unit 3 for recognizing the level signal higher.
Further, the monitoring unit 2 further includes a connector, and the connector is electrically connected to the power supply unit 1 and the and gate module.
Further, the and gate module 21 is a 74HC08 and gate chip.
As is clear from the above description, the and gate module 21 is low in cost and high in reliability.
Further, the signal processing unit 3 includes a receiving card 31, and the receiving card 31 is connected to the output terminal of the and gate module 21.
Further, the power supply monitoring circuit further comprises a display unit 4 for displaying the monitoring result of the power supply monitoring circuit, the signal processing unit 3 further comprises a transmitting card 32, and the transmitting card 32 is connected with the receiving card 31 and the display unit 4 respectively.
From the above description, the operator can more conveniently and intuitively understand whether each power module of the power unit 1 is in a normal state through the display unit 4.
Another object of the present utility model is to provide an LED display screen, which includes the above power supply monitoring circuit.
As can be seen from the above description, the LED display screen according to the present utility model includes at least all of the above advantages.
Example 1
Referring to fig. 1 to 2, a first embodiment of the present utility model is as follows: the power supply monitoring circuit for the LED display screen is specifically applied to the LED display screen, and comprises a power supply unit 1, a monitoring unit 2, a signal processing unit 3 and a display unit 4 for displaying the monitoring result of the power supply monitoring circuit, which are sequentially connected;
specifically, in the first embodiment, the power supply unit 1 includes a first power supply module 11, and the first power supply module 11 includes two paths of output voltages to ensure the reliability of power supply of the LED display screen, the first power supply module 11 is provided with a first monitor voltage output end 111 and a second monitor voltage output end 112 corresponding to the two paths of output voltages respectively, and when any path of output voltage of the power supply unit 1 is normal, the monitor voltage output end corresponding to the first monitor voltage output end can output a high-level monitor signal; when any output voltage of the power supply unit 1 is abnormal, the corresponding monitoring voltage output end can output a low-level monitoring signal.
In the first embodiment, the monitoring unit 2 includes a 74HC08 and gate chip, a first input stabilizing circuit I1, a second input stabilizing circuit I2, and a first output stabilizing circuit O1, wherein a first and gate 211 is disposed in the 74HC08 and gate chip, and the first and gate 211 includes a first input terminal 1A, a second input terminal 1B, and a first output terminal 1Y;
the input end of the first input stabilizing circuit I1 is connected with the first monitor voltage output end 111, the output end of the first input stabilizing circuit I1 is connected with the first input end 1A, and the first input stabilizing circuit can improve the stability of the monitor signal received by the first input end 1A, so that the reliability of the first and gate 211 for identifying the level of the monitor signal output by the first monitor voltage output end 111 is improved;
the input end of the second input stabilizing circuit I2 is connected with the second monitor voltage output end 112, the output end of the second input stabilizing circuit I2 is connected with the second input end 1B, and the first input stabilizing circuit can improve the stability of the monitor signal received by the second input end 1B, so that the reliability of the first and gate 211 for identifying the level of the monitor signal output by the second monitor voltage output end 112 is improved;
The input end of the first output stabilizing circuit O1 is connected to the first input end 1Y, and the output end of the first output stabilizing circuit O1 is connected to the input end of the signal processing unit 3, where the first input stabilizing circuit may improve the stability of the logic judgment signal received by the signal processing unit 3, so as to improve the reliability of the signal processing unit 3 in identifying the logic judgment signal level output by the first and gate 211.
In the first embodiment, the signal processing system specifically includes a receiving card 31 and a transmitting card 32, wherein an input end of the receiving card 31 is connected to an output end of the first output stabilizing circuit O2, an input end of the transmitting card 32 is connected to an output end of the receiving card 31, and an output end of the transmitting card 32 is connected to the display unit 4.
In the first embodiment, when the two output voltages of the first power module 11 are both in the normal state during the practical application, the first monitor voltage output terminal 111 outputs a high-level signal to the first input terminal 1A of the first and gate 211 through the first input stabilizing circuit I1, the second monitor voltage output terminal 112 outputs a high-level signal to the second input terminal 1B of the first and gate 211 through the second input stabilizing circuit I2, the first and gate 211 performs an and logic operation on the monitor signals received by the first input terminal 1A and the second input terminal 1B, and the logic judgment signal output by the first and gate 211 to the receiving card 31 through the first output stabilizing circuit O1 is a high-level signal, and the signal processing unit 3 recognizes and calculates the logic judgment signal and displays the normal identification of the first power module 11 through the display unit 4.
When any one or both of the output voltages of the first power module 11 are in an abnormal state, one or both of the first monitor voltage output terminal 111 and the second monitor voltage output terminal 112 will output a low level signal, and when the first and gate 211 inputs one or both of the low level signals, the first and gate 211 performs an and logic operation, and then the logic judgment signal output to the receiving card 31 through the first output stabilizing circuit O1 is a low level signal, and the signal processing unit 3 recognizes and calculates the logic judgment signal and displays the abnormal identifier of the first power module 11 through the display unit 4.
Of course, in other preferred embodiments of the present utility model, the first power module 11 is not limited to two output voltages, the number of output voltages of the first power module 11 may be set according to practical application requirements, and the number of corresponding first and gates 211 may also be set according to the number of output voltages of the first power module 11.
Example two
Referring to fig. 1 to 2, a second embodiment of the present utility model is a further improvement of the power supply unit 1 in the first embodiment, and the only difference between the second embodiment and the first embodiment is that: in the second embodiment, the power supply unit 1 further includes a second power supply module 12, where the second power supply module 12 includes a third monitor voltage output terminal 121 and a fourth monitor voltage output terminal 122;
The monitoring unit 2 further comprises a third input stabilizing circuit I3, a fourth input stabilizing circuit I4 and a second output stabilizing circuit O2, and the 74HC08 and gate chip further comprises a second and gate 212, the second and gate 212 comprising a third input 2A, a fourth input 2B and a second output 2Y.
Specifically, the input end of the third input stabilizing circuit I3 is connected to the third monitor voltage output end 121, and the output end of the third input stabilizing circuit I3 is connected to the third input end 2A; the input end of the fourth input stabilizing circuit I4 is connected with the fourth monitoring voltage output end 122, and the output end of the fourth input stabilizing circuit I4 is connected with the fourth input end 2B; the input end of the second output stabilizing circuit O2 is connected to the second input end 2Y, and the output end of the second output stabilizing circuit O2 is connected to the input end of the signal processing unit 3.
In the second embodiment, the working principles of the second power module 12, the second and gate 212 and the data processing unit are identical to the working principles of the first power module 11, the first and gate 211 and the data processing unit in the first embodiment, and are not described here again, when the two output voltages of the second power module 12 are in the normal state, the normal identifier of the second power module 12 can be displayed on the display module; when any one or two output voltages of the second power supply module 12 are in an abnormal state, the display module can display an abnormal identifier of the second power supply module 12.
In the second embodiment, the first power module 11 is specifically used as a main power module of the LED display screen, the second power module 12 is specifically used as a standby power module of the LED display screen, the number of the second power modules 12 may be set to be plural, and the number of the second and gates 212 may be set to be plural, so that the second and gates 212 are matched with the second power modules 12 one by one.
Example III
The third embodiment of the present utility model is a further improvement of the power supply unit 1 in the first embodiment, and the only difference between the third embodiment of the present utility model and the first embodiment is that: in the third embodiment, the power supply unit 1 includes a third power supply module and a fourth power supply module, and the third power supply module and the fourth power supply module include a single output voltage, respectively;
In the third embodiment, the third power supply module includes a fifth monitor voltage output terminal, and the fourth power supply module includes a sixth monitor voltage output terminal;
The logic module further comprises a third AND gate, a fifth input stabilizing circuit, a sixth input stabilizing circuit and a third output stabilizing circuit, wherein the third AND gate comprises a fifth input end, a sixth input end and a third output end;
Specifically, the fifth input stabilizing circuit is connected with the fifth monitoring voltage output end and the fifth input end of the third and gate respectively, the sixth input stabilizing circuit is connected with the sixth monitoring voltage output end and the sixth input end of the third and gate respectively, and the third output stabilizing circuit is connected with the third output end of the third and gate and the receiving card 31 respectively;
When the output voltage of the third power supply module and the output voltage of the fourth power supply module are both in a normal state, the fifth monitoring voltage output end and the sixth monitoring voltage output end both output high-level signals, the third AND gate performs AND logic operation on the two input high-level signals and then outputs the high-level signals, and the signal processing unit 3 displays normal identifications of the third power supply module and the fourth power supply module on the display unit 4 through software according to the high-level signals output by the third AND gate;
When one or both of the output voltage of the third power supply module and the output voltage of the fourth power supply module are in an abnormal state, one or both of the fifth monitoring voltage output end and the sixth monitoring voltage output end outputs a low-level signal, the third AND gate performs AND logic operation on one or two low-level signals to output a low-level signal, and the signal processing unit 3 displays the abnormal identification of the power supply module on the display unit 4 through software according to the low-level signal output by the third AND gate.
In summary, the power supply monitoring circuit of the utility model can monitor multiple output voltages of a single multiple output power supply module, multiple output power supply modules or multiple single output power supply modules, and has flexible application and high universality; in addition, the power supply monitoring circuit monitors a plurality of monitoring voltages of the power supply unit 1 by using the AND gate module 21, has a simple circuit structure, and has high logic judgment reliability by the AND gate module 21, so that the performance of the power supply monitoring circuit is stable and reliable; in addition, the power supply monitoring circuit does not need to set chip selection chips or increase the number of display screen control cards to match and meet the power supply monitoring detection, and is beneficial to reducing the production and manufacturing cost of the LED display screen.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323379055.1U CN221995299U (en) | 2023-12-11 | 2023-12-11 | A power supply monitoring circuit for LED display screen and LED display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323379055.1U CN221995299U (en) | 2023-12-11 | 2023-12-11 | A power supply monitoring circuit for LED display screen and LED display screen |
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| Publication Number | Publication Date |
|---|---|
| CN221995299U true CN221995299U (en) | 2024-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323379055.1U Active CN221995299U (en) | 2023-12-11 | 2023-12-11 | A power supply monitoring circuit for LED display screen and LED display screen |
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| CN (1) | CN221995299U (en) |
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- 2023-12-11 CN CN202323379055.1U patent/CN221995299U/en active Active
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