A dual power supply mutual backup system for LED cabinet

Abstract

The present application provides a dual power supply mutual backup system for an LED box, comprising: an external power supply, an LED box, at least two LED modules, a monitoring device, a connecting device, and a control device; at least two LED modules are arranged in parallel on the LED box, each LED module comprises an electric control cabinet and an internal power supply located in the electric control cabinet, the external power supply is connected to the at least two internal power supplies to supply power to the at least two internal power supplies at the same time, and the internal power supplies are respectively used to supply power to the corresponding LED modules at the same time; the control device is respectively connected to the monitoring device and the at least two internal power supplies, and the monitoring device is respectively connected to the control device and the at least two internal power supplies, and when any one of the internal power supplies is in a power-off state, the internal power supply in the power-off state is connected to the internal power supply in the power-on state, so that the internal power supply in the power-on state supplies power to the internal power supply in the power-off state. The present application can reduce the cost of power supply backup.

Description

Technical Field

[0001] The present application relates to the technical field of LED display screens, and in particular to a dual power supply mutual backup system for an LED box. Background Art

[0002] LED display is a widely used display screen composed of LED device arrays for displaying various information such as text, graphics, images, animations, market conditions, as well as television and video signals. LED display has the advantages of color, wide dynamic range, high brightness, long life, and reliable operation, and is becoming more and more popular. LED display is widely used in commercial media, cultural performance markets, stadiums, information dissemination, news releases, securities trading and other environments. With the widespread use of LED display, higher requirements are also put forward for the stability of LED display. At present, in order to improve the stability of LED display, power backup will be designed for LED display.

[0003] The conventional power backup circuit is designed to double the power supply of the product as a backup. During operation, the main power supply works and the backup power supply does not work. When the main power supply fails, the backup power supply automatically switches to take over the work of the main power supply to ensure that the load end is not affected. After the launch of thin and light products, the size of the power box is limited, and there is no space to install twice the number of backup power supplies. As a result, the power backup function cannot be realized.

[0004] The traditional conventional power backup method has the following technical problems: the trend of thinner and lighter LED displays is becoming more and more obvious. Due to the limited size of the power box, the traditional conventional power backup cannot be implemented on thin and light products, and the traditional conventional power backup cost is high.

[0005] In view of this, overcoming the deficiencies of the prior art products is an urgent problem to be solved in the field of this technology. Summary of the invention

[0006] The main technical problem solved by the present application is to provide a dual power supply backup system for an LED box, which can reduce the power supply backup cost.

[0007] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a dual power supply mutual backup system for an LED box, comprising: an external power supply, an LED box, at least two LED modules, a monitoring device, a connecting device, and a control device;

[0008] At least two LED modules are arranged in parallel on the LED box, each of the LED modules includes an electric control cabinet and an internal power supply located in the electric control cabinet, the external power supply is connected to the at least two internal power supplies to supply power to the at least two internal power supplies at the same time, and the internal power supplies are respectively used to supply power to the corresponding LED modules at the same time;

[0009] The control device is respectively connected to the monitoring device and at least two of the internal power supplies, the monitoring device is respectively connected to the control device and at least two of the internal power supplies, and the connecting device is used to connect the two internal power supplies;

[0010] When any one of the internal power supplies is in a power-off state, the monitoring device sends power-off monitoring information to the control device. When the control device receives the power-off monitoring information, it controls the connecting device to connect the internal power supply in the power-off state and the internal power supply in the non-power-off state, so that the internal power supply in the non-power-off state supplies power to the internal power supply in the power-off state.

[0011] Optionally, the control device is further used to reduce the brightness of each LED module to a preset proportion of the current brightness.

[0012] Optionally, the preset ratio is 80%.

[0013] Optionally, an overload protection device is provided on the connecting device, and the overload protection device is disconnected when the load borne by the internal power supply is greater than a preset value.

[0014] Optionally, the internal power supply includes an input module, a conversion module and an output module, the input module is connected to the external power supply to receive power from the external power supply and input it into the conversion module, the conversion module is used to convert the received power into power matching the LED module, and the output module is used to transport the power matching the LED module to the LED module.

[0015] Optionally, the connecting device connects multiple output modules of the internal power supply.

[0016] Optionally, the internal power supply includes a control module, and the control module is used to control the switching and power conversion of the internal power supply.

[0017] Optionally, the electric control cabinet is provided with a signal line, and the signal line is used to connect an external signal source and input the signal into the LED module.

[0018] Optionally, the electric control cabinet is provided with a power cord, the external power supply is connected to the internal power supply through the power cord, and the external power supply transmits power to the internal power supply through the power cord.

[0019] Optionally, the number of the LED modules is 2.

[0020] The beneficial effects of the present application are as follows: the present application provides a dual power supply mutual backup system for an LED box, comprising: an external power supply, an LED box, at least two LED modules, a monitoring device, a connecting device, and a control device; at least two LED modules are arranged in parallel on the LED box, each LED module comprises an electric control cabinet and an internal power supply located in the electric control cabinet, the external power supply is connected to the at least two internal power supplies to simultaneously supply power to the at least two internal power supplies, and the internal power supplies are respectively used to simultaneously supply power to the corresponding LED modules; the control device is respectively connected to the monitoring device and the at least two internal power supplies, the monitoring device is respectively connected to the control device and the at least two internal power supplies, and the connecting device is used to connect the two internal power supplies; when any one of the internal power supplies is in a power-off state, the monitoring device sends a power-off monitoring message to the control device, and when the control device receives the power-off monitoring message, it controls the connecting device to connect the internal power supply in the power-off state and the internal power supply in the non-power-off state, so that the internal power supply in the non-power-off state supplies power to the internal power supply in the power-off state. The multiple internal power supplies of the present application back up each other. When one of the internal power supplies is damaged and powered off, the control device controls the connection device to connect the internal power supply in the powered-off state and the internal power supply in the powered-on state, so that the internal power supply in the powered-on state supplies power to the internal power supply in the powered-off state, thereby reducing the power supply backup cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the external structure of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of a circuit module of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the internal modules of the internal power supply and the connection device in a dual power supply mutual backup system for an LED box provided in an embodiment of the present application;

[0025] Figure 4 This is a circuit diagram of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.

[0029] It should be noted that since the method of the embodiment of the present application is executed in an electronic device, the processing objects of each electronic device exist in the form of data or information. For example, time is actually time information. It can be understood that if size, quantity, position, etc. are mentioned in subsequent embodiments, they are all corresponding data for processing by the electronic device. The details will not be elaborated here.

[0030] See also Figure 1-Figure 4 , Figure 1This is a schematic diagram of the external structure of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application; Figure 2 This is a schematic diagram of a circuit module of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the internal modules of the internal power supply and the connection device in a dual power supply mutual backup system for an LED box provided in an embodiment of the present application; Figure 4 This is a circuit diagram of a dual power supply mutual backup system for an LED box provided in an embodiment of the present application.

[0031] The present embodiment provides a dual power supply mutual backup system 10 for an LED box, and the dual power supply mutual backup system 10 for an LED box includes: an external power supply 21, an LED box 11, at least two LED modules 12, a monitoring device 24, a connecting device 13, and a control device 23. At least two LED modules 12 are arranged in parallel on the LED box 11, and each LED module 12 includes an electric control cabinet 121 and an internal power supply 22 located in the electric control cabinet 121. The external power supply 21 is connected to the at least two internal power supplies 22 to supply power to the at least two internal power supplies 22 at the same time, and the internal power supplies 22 are respectively used to supply power to the corresponding LED modules 12 at the same time, that is, to supply power to the corresponding loads. The control device 23 is connected to the monitoring device 24 and at least two internal power supplies 22 respectively, the monitoring device 24 is connected to the control device 23 and at least two internal power supplies 22 respectively, and the connecting device 13 is used to connect the two internal power supplies 22; when any one of the internal power supplies 22 is in a power-off state, the monitoring device 24 sends a power-off monitoring message to the control device 23, and when the control device 23 receives the power-off monitoring message, it controls the connecting device 13 to connect the internal power supply 22 in the power-off state and the internal power supply 22 in the power-on state, so that the internal power supply 22 in the power-on state supplies power to the internal power supply 22 in the power-off state. The external power supply 21, i.e., the main power supply, supplies power to the internal power supply 22. The internal power supply 22 has a connecting device 13 with the internal power supply 22, and will be controlled by the control device 23.

[0032] Furthermore, the control device 23 is also used to reduce the brightness of each LED module 12 to a preset proportion of the current brightness.

[0033] Furthermore, the preset ratio is 80%. Of course, in other embodiments, the preset ratio can also be set to 85%, 90%, etc., which can be set according to the specific situation. When an internal power supply 22 cannot receive the external power supply 21, the internal power supply 22 cannot supply power to the load it bears. The monitoring device 24 detects this information and transmits it to the control device 23. The control device 23 will control the normal internal power supply 22 to supply power to the internal power supply 22 that cannot receive the external power supply 21 through the connecting device 13. At this time, the normal internal power supply 22 provides power to bear two loads. In order to ensure normal operation under this situation, the brightness will be reduced to 80% of the original brightness.

[0034] Furthermore, the connection device 13 is provided with an overload protection device 131, which is disconnected when the load borne by the internal power supply 22 is greater than a preset value. The connection device 13 is provided with an overload protection device 131, which is used to prevent the normal internal power supply from being damaged due to excessive load. Furthermore, the internal power supply 22 includes an input module 221, a conversion module 222 and an output module 224. The input module 221 is connected to the external power supply 21 to receive power from the external power supply 21 and input it into the conversion module 222. The conversion module 222 is used to convert the received power into power matching the LED module 12. The output module 224 is used to transport the power matching the LED module 12 to the LED module 12.

[0035] Further, the connection device 13 is connected to the output modules 224 of the plurality of internal power sources 22. The control device 23 controls the connection device 13. The connection device 13 is connected to the output modules 224 of the internal power sources 22 to ensure that when the internal power source 22 is damaged, the normal internal power source 22 can still transport power to the load.

[0036] Furthermore, the internal power supply 22 includes a control module 223 , and the control module 223 is used to control the switching and power conversion of the internal power supply 22 .

[0037] Furthermore, the electric control cabinet 121 is provided with a signal line 14, which is used to connect an external signal source and input the signal to the LED module 12, so that the LED module 12 can display the multimedia information required to be displayed.

[0038] Furthermore, a power line 16 is provided on the electric control cabinet 121 , and the external power supply 21 is connected to the internal power supply 22 via the power line 16 , and the external power supply 21 transmits power to the internal power supply 22 via the power line 16 .

[0039] Furthermore, the number of LED modules 12 is 2.

[0040] The present application provides a dual power supply mutual backup system for an LED box, comprising: an external power supply, an LED box, at least two LED modules, a monitoring device, a connecting device, and a control device; at least two LED modules are arranged in parallel on the LED box, each LED module comprises an electric control cabinet and an internal power supply located in the electric control cabinet, the external power supply is connected to the at least two internal power supplies to supply power to the at least two internal power supplies at the same time, and the internal power supplies are respectively used to supply power to the corresponding LED modules at the same time; the control device is respectively connected to the monitoring device and the at least two internal power supplies, the monitoring device is respectively connected to the control device and the at least two internal power supplies, and the connecting device is used to connect the two internal power supplies; when any one of the internal power supplies is in a power-off state, the monitoring device sends a power-off monitoring message to the control device, and when the control device receives the power-off monitoring message, it controls the connecting device to connect the internal power supply in the power-off state and the internal power supply in the non-power-off state, so that the internal power supply in the non-power-off state supplies power to the internal power supply in the power-off state. The multiple internal power supplies of the present application back up each other. When one of the internal power supplies is damaged and powered off, the control device controls the connection device to connect the internal power supply in the powered-off state and the internal power supply in the powered-on state, so that the internal power supply in the powered-on state supplies power to the internal power supply in the powered-off state, thereby reducing the power supply backup cost.

[0041] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A dual power supply mutual backup system for LED cabinet, characterized in that: include: External power supply, LED box, at least two LED modules, monitoring device, connecting device, control device; At least two LED modules are arranged in parallel on the LED box, each of the LED modules includes an electric control cabinet and an internal power supply located in the electric control cabinet, the external power supply is connected to the at least two internal power supplies to supply power to the at least two internal power supplies at the same time, and the internal power supplies are respectively used to supply power to the corresponding LED modules at the same time; The control device is respectively connected to the monitoring device and at least two of the internal power supplies, the monitoring device is respectively connected to the control device and at least two of the internal power supplies, and the connecting device is used to connect the two internal power supplies; When any one of the internal power supplies is in a power-off state, the monitoring device sends power-off monitoring information to the control device. When the control device receives the power-off monitoring information, it controls the connecting device to connect the internal power supply in the power-off state with the internal power supply in the power-on state, so that the internal power supply in the power-on state supplies power to the internal power supply in the power-off state; The control device is also used to reduce the brightness of each LED module to a preset proportion of the current brightness; The preset ratio is 80%; The connecting device is provided with an overload protection device, and the overload protection device is disconnected when the load borne by the internal power supply is greater than a preset value; The internal power supply includes an input module, a conversion module and an output module. The input module is connected to the external power supply to receive power from the external power supply and input it into the conversion module. The conversion module is used to convert the received power into power matching the LED module. The output module is used to transport the power matching the LED module to the LED module.

2. The dual power supply mutual backup system for LED cabinet according to claim 1, characterized in that: The connecting device connects a plurality of output modules of the internal power supply.

3. The dual power supply mutual backup system for LED box according to claim 1, characterized in that: The internal power supply includes a control module, and the control module is used to control the switch and power conversion of the internal power supply.

4. The dual power supply mutual backup system for LED cabinet according to claim 1, characterized in that: The electric control cabinet is provided with a signal line, and the signal line is used to connect an external signal source and input the signal into the LED module.

5. The dual power supply mutual backup system for LED cabinet according to claim 1, characterized in that: The electric control cabinet is provided with a power line, the external power supply is connected to the internal power supply through the power line, and the external power supply transmits power to the internal power supply through the power line.

6. The dual power supply mutual backup system for LED cabinet according to claim 1, characterized in that: The number of the LED modules is 2.

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