CN112735327A - Power supply control circuit of LED all-in-one machine and LED all-in-one machine - Google Patents
Power supply control circuit of LED all-in-one machine and LED all-in-one machine Download PDFInfo
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- CN112735327A CN112735327A CN202011641250.5A CN202011641250A CN112735327A CN 112735327 A CN112735327 A CN 112735327A CN 202011641250 A CN202011641250 A CN 202011641250A CN 112735327 A CN112735327 A CN 112735327A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
Abstract
The invention discloses a power supply control circuit of an LED all-in-one machine and the LED all-in-one machine, which comprise a power supply intelligent control card, a control switch, an android card power supply unit, an android card, a sending box and a screen body; the control switch, the android card power supply unit, the android card, the sending box and the screen body are respectively connected with the power intelligent control card; the android card power supply unit is connected with an android card; and the power supply intelligent control card is connected with the mains supply. According to the invention, the LED all-in-one machine is subjected to controllable and ordered power supply output through the power supply intelligent control card, so that the power consumption of the LED all-in-one machine is very low in a standby state, the purpose of reducing the power consumption can be achieved, the standby energy-saving requirement is met, and the product competitiveness is improved.
Description
Technical Field
The invention relates to the technical field of LED all-in-one machines, in particular to a power supply control circuit of an LED all-in-one machine and the LED all-in-one machine.
Background
With the development of science and technology, the social requirements on image display are higher and higher, and the LED spliced screen is accepted by more and more people due to the superior performances of high-definition display, seamless splicing, high brightness, high grey and the like, is widely applied to various places such as entertainment and sports, traffic stations, office enterprises, financial security industry and the like, and becomes the most common display media for information dissemination, advertising and news release.
At present, most of the power supply of the LED all-in-one machines in the market adopts a distributed power supply scheme due to the restriction of power and cost, as shown in fig. 1. The input of the power supply scheme is a plurality of system power supplies, so that the actual standby power consumption is hundreds of watts, and a large amount of electric energy is consumed.
Therefore, how to improve the power supply technology of the existing LED all-in-one machine to overcome the above-mentioned drawbacks, or to provide a completely new power supply technology of the LED all-in-one machine, so as to increase the practicability thereof, becomes one of the important research subjects of the technicians in this field.
The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.
Disclosure of Invention
The invention provides a power supply control circuit of an LED all-in-one machine and the LED all-in-one machine, which are used for solving the defects of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
in a first aspect, an embodiment of the invention provides a power supply control circuit of an LED all-in-one machine, which includes a power intelligent control card, a control switch, an android card power supply unit, an android card, a sending box, and a screen body; wherein the content of the first and second substances,
the control switch, the android card power supply unit, the android card, the sending box and the screen body are connected with the power supply intelligent control card respectively; the android card power supply unit is connected with the android card; the power supply intelligent control card is connected with commercial power;
the control switch is used for outputting a starting signal or a power supply cut-off signal or a shutdown signal to the intelligent power control card;
the power supply intelligent control card is used for conducting commercial power and the android card power supply unit after receiving the starting signal and outputting an android control signal to the android card;
the android card power supply unit is used for reducing the voltage of mains supply into working direct current of the android card and then supplying power to the android card;
the android card is electrified after receiving the android control signal, and outputs a switch control signal to the power supply intelligent control card;
the power supply intelligent control card is also used for controlling the sending box and the screen body to be electrified after receiving the switch control signal;
the power supply intelligent control card is also used for cutting off the power supply of the sending box and the screen body after receiving the power supply cutting-off signal; and the power supply of the sending box, the screen body and the android card is cut off after the shutdown signal is received.
Furthermore, in the power supply control circuit of the LED all-in-one machine, the control switch is any one of a button switch, a knob switch and a touch switch.
Furthermore, in the power supply control circuit of the LED all-in-one machine, the power supply intelligent control card comprises a micro control unit, a power supply input interface, an AC-DC conversion unit, a DC-DC voltage reduction unit, an AC output control unit and a plurality of AC output interfaces;
the power input interface, the AC-DC conversion unit and the DC-DC voltage reduction unit are sequentially connected;
the AC output interfaces are connected with the power input interface;
one end of the AC output control unit is connected with the micro control unit, and the other end of the AC output control unit is connected between the AC output interfaces and the power input interface.
Furthermore, in the power supply control circuit of the LED all-in-one machine, the AC output control unit comprises a plurality of AC output control subunits with the number corresponding to that of the AC output interfaces;
one end of the AC output control subunit is connected with the micro control unit, and the other end of the AC output control subunit is connected between the corresponding AC output interface and the power input interface.
Furthermore, in the power supply control circuit of the LED all-in-one machine, the AC output control subunit comprises a first resistor, a second resistor, a third resistor, a triode, a diode and a relay;
the first resistor and the second resistor are connected in series and then grounded;
the first end of the triode is connected between the first resistor and the second resistor, the second end of the triode is connected with the anode of the diode, and the third end of the triode is grounded;
the cathode of the diode is connected with the third resistor;
the first resistor and the third resistor are respectively connected with the micro control unit;
the relay comprises an electromagnetic coil and an armature switch;
the electromagnetic coil is connected in parallel at two ends of the diode, and the armature switch is connected in series between the AC output interface and the power supply input interface.
Further, in the power supply control circuit of the LED all-in-one machine, the triode is an NPN type triode;
the first end, the second end and the third end of the triode respectively correspond to a base electrode, a collector electrode and an emitter electrode of the NPN type triode.
Furthermore, in the power supply control circuit of the LED all-in-one machine, the power intelligent control card further comprises a serial port and/or a network port.
In a second aspect, an embodiment of the present invention provides an LED all-in-one machine, including the power supply control circuit of the LED all-in-one machine described in the first aspect.
According to the power supply control circuit of the LED all-in-one machine and the LED all-in-one machine, the LED all-in-one machine is subjected to controllable and orderly power supply output through the intelligent power control card, so that the power consumption of the LED all-in-one machine is very low in a standby state, the purpose of reducing the power consumption can be achieved, the standby energy-saving requirement is met, and the product competitiveness is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and 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 prior art distributed power scheme for an all-in-one machine;
fig. 2 is a schematic diagram of functional modules of a power supply control circuit of an LED all-in-one machine according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of functional modules of a smart control card for power supply according to an embodiment of the present invention;
FIG. 4 is a schematic circuit diagram of an AC output control subunit according to an embodiment of the present invention;
reference numerals:
the system comprises a power intelligent control card 10, a control switch 20, an android card power supply unit 30, an android card 40, a sending box 50 and a screen body 60;
the system comprises a micro control unit 11, a power input interface 12, an AC-DC conversion unit 13, a DC-DC voltage reduction unit 14, an AC output control unit 15 and an AC output interface 16.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
In view of the above-mentioned defects of the existing power supply technology for LED all-in-one machines, the applicant is based on the practical experience and professional knowledge that are abundant for many years in the design and manufacture of such products, and cooperates with the application of the theory to actively make research and innovation, so as to hopefully create a technology capable of solving the defects in the prior art, so that the power supply for LED all-in-one machines has more practicability. After continuous research and design and repeated trial production and improvement, the invention with practical value is finally created.
Referring to fig. 2, an embodiment of the present invention provides a power supply control circuit of an LED all-in-one machine, including a power intelligent control card 10, a control switch 20, an android card power supply unit 30, an android card 40, a sending box 50, and a screen body 60; wherein the content of the first and second substances,
the control switch 20, the android card power supply unit 30, the android card 40, the sending box 50 and the screen body 60 are respectively connected with the power intelligent control card 10; the android card power supply unit 30 is connected with the android card 40; the intelligent power control card 10 is connected with commercial power;
the control switch 20 is configured to output a power-on signal, a power supply cut-off signal, or a power-off signal to the intelligent power control card 10;
the power supply intelligent control card 10 is configured to, after receiving the power-on signal, connect a commercial power with the android card power supply unit 30, and output an android control signal to the android card 40;
the android card power supply unit 30 is used for reducing the mains supply voltage to working direct current of the android card 40 and then supplying power to the android card 40;
the android card 40 is powered on after receiving the android control signal, and outputs a switch control signal to the power intelligent control card 10;
the power intelligent control card 10 is further configured to control the sending box 50 and the screen body 60 to be powered on after receiving the switch control signal;
the power intelligent control card 10 is further configured to cut off power supply to the transmitting box 50 and the screen body 60 after receiving the power supply cut-off signal; and is configured to cut off power supply to the sender box 50, the screen body 60, and the android card 40 after receiving the shutdown signal.
Preferably, the control switch 20 is any one of a push switch, a rotary switch and a touch switch.
The working principle is as follows:
when the commercial power 220VAC is input, the power intelligent control card 10 is in a standby state, and the standby power consumption is below 0.5W; when the control switch 20 is pressed, and the power supply intelligent control card 10 recognizes a power-on signal, the android card power supply unit 30(19V/5V power supply) is connected with the mains supply (at this time, the sending box 50 and the screen body 60 are not powered on); after an interval of 50ms or after detecting a normal start signal PG of the android card power supply unit 30(19V/5V power supply), the power supply intelligent control card 10 outputs one channel of android control signal to the android card 40, so that the android card 40 is powered on; after the android card 40 is powered on, a signal (i.e., a switch control signal) for starting the power-on of the sending box 50 and the screen body 60 is given, and at this time, the sending box 50 and the screen body 60 are powered on; when the screen body 60 works normally, and the control switch 20 is pressed (the pressing time is less than 3s), at this time, the power supply intelligent control card 10 recognizes an electrical cut-off signal, and cuts off the power supply of the sending box 50 and the screen body 60, but the android card 40 still works normally; if the control switch 20 is pressed again, the power supply of the transmitting box 50 and the screen body 60 is started again; only when the control switch 20 is pressed (for 3-6 s), the smart card 10 will cut off all power supply and then enter the standby state.
As shown in fig. 3, in this embodiment, the intelligent power control card 10 includes a micro control unit 11, a power input interface 12, an AC-DC conversion unit 13, a DC-DC voltage reduction unit 14, an AC output control unit 15, and a plurality of AC output interfaces 16;
the power input interface 12, the AC-DC conversion unit 13 and the DC-DC voltage reduction unit 14 are connected in sequence;
the AC output interfaces 16 are connected with the power input interface 12;
one end of the AC output control unit 15 is connected to the micro control unit 11, and the other end is connected between the AC output interfaces 16 and the power input interface 12.
In this embodiment, the AC output control unit 15 includes a number of AC output control subunits corresponding to the number of AC output interfaces 16;
one end of the AC output control subunit is connected to the micro control unit 11, and the other end is connected between the corresponding AC output interface 16 and the power input interface 12.
The working principle is as follows:
the commercial power alternating current (100-240VAC) is input into one path through the power input interface 12 to supply power to the AC-DC conversion unit 13, 5V is output, 3.3V is output after 5V passes through the DC-DC voltage reduction unit 14, and the MCU 11 is powered; the other voltage of the commercial power alternating current (100-240VAC) supplies power to a plurality of AC output interfaces 16 (for example, 6 AC output interfaces 16 from AC output 1 to AC output 6), and then directly outputs the alternating current to the screen body 60.
As shown in fig. 4, in the present embodiment, the AC output control subunit includes a first resistor R1, a second resistor R2, a third resistor R3, a transistor Q1, a diode D1, and a relay K1;
the second resistor R2 and the third resistor R3 are connected in series and then grounded;
a first terminal of the transistor Q1 is connected between the second resistor R2 and the third resistor R3, a second terminal of the transistor Q1 is connected to the anode of the diode D1, and a third terminal of the transistor Q1 is grounded;
the cathode of the diode D1 is connected with the first resistor R1;
the second resistor R2 and the first resistor R1 are respectively connected with the micro control unit 11;
the relay K1 comprises an electromagnetic coil and an armature switch;
the electromagnetic coil is connected in parallel across the diode D1, and the armature switch is connected in series between the AC output interface 16 and the power input interface 12.
Preferably, the transistor Q1 is an NPN-type transistor;
the first end, the second end and the third end of the triode Q1 respectively correspond to the base electrode, the collector electrode and the emitter electrode of the NPN type triode.
It should be noted that, in fig. 4, CK1 is a digital signal output by the MCU, when the voltage is high, the transistor Q1 is turned on, at this time, the coil of the relay K1 is turned on, and the relay K1 is pulled in, so that the AC line terminal Lin1 outputs to Lout1, whereas, when CK1 is low, the relay K1 is turned off, and no signal is input to the output terminal Lout1, thereby achieving the purpose of control. The control power of the circuit can reach 2000W. The above description is for the control of one of the AC output control subunits, the other ways being the same.
When the power intelligent control card 10 is in standby operation, only the AC-DC conversion unit 13, the DC-DC voltage reduction unit 14 and the MCU are powered on, and other control circuits are not powered on, so that power consumption can be maintained within 0.5W in standby operation, when the system needs to start other devices, a signal is transmitted to the MCU, and then the MCU receives the signal and sequentially powers on the system. The system can meet the standby energy-saving requirement and can also realize the surge suppression function
In this embodiment, the power supply intelligent control card 10 further includes a serial port and/or a network port, and the control of the MCU can be realized through related communications such as the serial port and the network port.
According to the power supply control circuit of the LED all-in-one machine, the LED all-in-one machine is subjected to controllable and orderly power supply output through the intelligent power control card, so that the power consumption of the LED all-in-one machine is very low in a standby state, the purpose of reducing the power consumption can be achieved, the standby energy-saving requirement is met, and the product competitiveness is improved.
Example two
The embodiment of the invention provides an LED all-in-one machine, which comprises a power supply control circuit of the LED all-in-one machine.
According to the LED all-in-one machine provided by the embodiment of the invention, the LED all-in-one machine is subjected to controllable and ordered power supply output through the power supply intelligent control card, so that the power consumption of the LED all-in-one machine is very low in a standby state, the purpose of reducing the power consumption can be achieved, the standby energy-saving requirement is met, and the product competitiveness is improved.
The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same elements or features may also vary in many respects. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those skilled in the art. Numerous details are set forth, such as examples of specific parts, devices, and methods, in order to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the disclosure. In certain example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and "comprising" are intended to be inclusive and therefore specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed and illustrated, unless explicitly indicated as an order of performance. It should also be understood that additional or alternative steps may be employed.
When an element or layer is referred to as being "on" … … "," engaged with "… …", "connected to" or "coupled to" another element or layer, it can be directly on, engaged with, connected to or coupled to the other element or layer, or intervening elements or layers may also be present. In contrast, when an element or layer is referred to as being "directly on … …," "directly engaged with … …," "directly connected to" or "directly coupled to" another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship of elements should be interpreted in a similar manner (e.g., "between … …" and "directly between … …", "adjacent" and "directly adjacent", etc.). As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region or section from another element, component, region or section. Unless clearly indicated by the context, use of terms such as the terms "first," "second," and other numerical values herein does not imply a sequence or order. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
Spatially relative terms, such as "inner," "outer," "below," "… …," "lower," "above," "upper," and the like, may be used herein for ease of description to describe a relationship between one element or feature and one or more other elements or features as illustrated in the figures. Spatially relative terms may be intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the example term "below … …" can encompass both an orientation of facing upward and downward. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted.
Claims (8)
1. A power supply control circuit of an LED all-in-one machine is characterized by comprising a power intelligent control card, a control switch, an android card power supply unit, an android card, a sending box and a screen body; wherein the content of the first and second substances,
the control switch, the android card power supply unit, the android card, the sending box and the screen body are connected with the power supply intelligent control card respectively; the android card power supply unit is connected with the android card; the power supply intelligent control card is connected with commercial power;
the control switch is used for outputting a starting signal or a power supply cut-off signal or a shutdown signal to the intelligent power control card;
the power supply intelligent control card is used for conducting commercial power and the android card power supply unit after receiving the starting signal and outputting an android control signal to the android card;
the android card power supply unit is used for reducing the voltage of mains supply into working direct current of the android card and then supplying power to the android card;
the android card is electrified after receiving the android control signal, and outputs a switch control signal to the power supply intelligent control card;
the power supply intelligent control card is also used for controlling the sending box and the screen body to be electrified after receiving the switch control signal;
the power supply intelligent control card is also used for cutting off the power supply of the sending box and the screen body after receiving the power supply cutting-off signal; and the power supply of the sending box, the screen body and the android card is cut off after the shutdown signal is received.
2. The power supply control circuit of the LED all-in-one machine as claimed in claim 1, wherein the control switch is any one of a button switch, a knob switch and a touch switch.
3. The power supply control circuit of the LED all-in-one machine of claim 1, wherein the power intelligent control card comprises a micro control unit, a power input interface, an AC-DC conversion unit, a DC-DC voltage reduction unit, an AC output control unit and a plurality of AC output interfaces;
the power input interface, the AC-DC conversion unit and the DC-DC voltage reduction unit are sequentially connected;
the AC output interfaces are connected with the power input interface;
one end of the AC output control unit is connected with the micro control unit, and the other end of the AC output control unit is connected between the AC output interfaces and the power input interface.
4. The power supply control circuit of the LED all-in-one machine as claimed in claim 3, wherein the AC output control unit comprises a plurality of AC output control subunits with the number corresponding to the AC output interface;
one end of the AC output control subunit is connected with the micro control unit, and the other end of the AC output control subunit is connected between the corresponding AC output interface and the power input interface.
5. The power supply control circuit of the LED all-in-one machine as claimed in claim 4, wherein the AC output control subunit comprises a first resistor, a second resistor, a third resistor, a triode, a diode and a relay;
the first resistor and the second resistor are connected in series and then grounded;
the first end of the triode is connected between the first resistor and the second resistor, the second end of the triode is connected with the anode of the diode, and the third end of the triode is grounded;
the cathode of the diode is connected with the third resistor;
the first resistor and the third resistor are respectively connected with the micro control unit;
the relay comprises an electromagnetic coil and an armature switch;
the electromagnetic coil is connected in parallel at two ends of the diode, and the armature switch is connected in series between the AC output interface and the power supply input interface.
6. The power supply control circuit of the LED all-in-one machine as claimed in claim 5, wherein the triode is an NPN type triode;
the first end, the second end and the third end of the triode respectively correspond to a base electrode, a collector electrode and an emitter electrode of the NPN type triode.
7. The power supply control circuit of the LED all-in-one machine as claimed in claim 1, wherein the power supply intelligent control card further comprises a serial port and/or a network port.
8. An LED all-in-one machine is characterized by comprising a power supply control circuit of the LED all-in-one machine as claimed in any one of claims 1-7.
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| CN202011641250.5A CN112735327A (en) | 2020-12-31 | 2020-12-31 | Power supply control circuit of LED all-in-one machine and LED all-in-one machine |
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