CN205158817U - LED display device based on mobile communication network - Google Patents

Abstract

The utility model relates to an LED display device based on a mobile communication network, comprising: a power generation device, a power supply unit, a command forwarding unit, and an LED screen module; the power generation device is connected to the power supply unit, and the power supply unit is respectively connected to the command forwarding unit and the LED screen module ; The command forwarding unit is connected to the LED screen module through a 3-wire serial port. The beneficial effects are: (1) the display content and display mode can be set remotely, and the display content is convenient to replace; (2) the power supply is clean energy, which is green and environmentally friendly, and is suitable for places where the power supply cost is high or it is inconvenient to establish a power grid; (3) command forwarding The unit can be controlled not only through the wireless mobile communication network, but also through the wired serial port, with good compatibility and wide application range; (4) The display content is very clear in day and night; (5) Modular design, easy maintenance, Easy installation and low cost.

Description

A LED display device based on mobile communication network

technical field

The utility model relates to an LED display device, in particular to an LED display device based on a mobile communication network.

Background technique

On the signboards on the roadside of the highway, on the lampposts and in the countryside, many signages for information use fixed-content nameplates and billboards. When night falls, the contents of these indicators cannot be seen. The LED display has high brightness and can be flexibly set to display graphics and texts. It is widely used in billboards, store signs, information prompts, etc. Usually the LED display board needs to be connected to the AC220V power grid for its power supply, and the wired RS232 interface is used to set the display content. Due to the cost of setting up power lines in the countryside or on the roadside, LED screens are rarely used in the countryside. There are often a large number of cloth or metal fixed content passive (cannot emit light, need external light to see the content) advertising or indication facilities that display information on the street lamps next to the roads in the city. If these facilities need to replace the content, it will cost a lot of money Manpower, and it's hard to see at night.

Utility model content

In order to overcome the above shortcomings, the utility model aims to provide an LED display device based on a mobile communication network, which is composed of a power generation device, a power supply unit, a command forwarding unit and an LED screen module. The device has a modular design, is convenient for installation and maintenance, saves manpower and material costs, and has a wide range of applications.

The utility model achieves the above object through the following technical solutions: a LED display device based on a mobile communication network, comprising: a power generation device, a power supply unit, a command forwarding unit, and an LED screen module; the power generation device is connected to the power supply unit, and the power supply unit is connected to The command forwarding unit is connected with the LED screen module; the command forwarding unit is connected with the LED screen module.

Preferably, the power generating device is a solar panel or a wind generator.

Preferably, the power supply unit includes: DC power socket, DC-DC module, power management circuit, LED screen module power socket, command forwarding unit power socket, battery, PCB board, shell; DC power socket, DC-DC module , power management circuit, LED screen module power socket, and command forwarding unit power socket are fixed on the PCB; DC power socket, DC-DC module, and power management circuit are connected in sequence; Unit power socket, battery connection; PCB board and battery are located in the shell.

Preferably, the DC-DC module is a switching power supply module, and its output voltage is 5V.

Preferably, the battery is a lithium ion battery.

Preferably, the command forwarding unit includes: a mobile communication module, a command input socket, an MCU circuit, a male plug, a power socket, a PCB board, and a housing; a mobile communication module, a command input socket, an MCU circuit, a male plug, and a power socket are On the PCB board; the power socket is respectively connected with the mobile communication module and the MCU circuit; the MCU circuit is respectively connected with the mobile communication module, the command input socket and the male plug; the PCB board is arranged in the shell.

As preferably, the MCU circuit includes an MCU with 3 UART interfaces, a reset circuit, a level conversion circuit, and a 3.3V power supply circuit; two UART interfaces of the MCU are respectively connected with the mobile communication module and the command input socket, and the other The UART interface is used to connect with the male plug; the MCU is respectively connected with the reset circuit, the level conversion circuit and the 3.3V power supply circuit.

Preferably, the male plug is a 9-pin D-type male plug.

Preferably, the LED screen module includes: LED screen, LED screen controller, power socket, shell; power socket is connected with LED screen controller and LED screen respectively; LED screen controller is connected with LED screen; LED screen, LED The screen controller and the power socket are located inside the shell.

As a preference, the LED screen controller has a connector and a 9-pin D-type female plug, and the 9-pin D-type female plug has an RS232 serial communication interface for connecting to an external serial port.

The beneficial effects of the utility model are: (1) the display content and the display mode can be set remotely, and the display content can be replaced conveniently; (2) the power supply is provided by clean energy, which is green and environmentally friendly, and is suitable for places where the power supply cost is high or it is inconvenient to establish a power grid; 3) The command forwarding unit can be controlled not only through the wireless mobile communication network, but also through the wired serial port, with good compatibility and wide application range; (4) The display content is very clear in day and night; (5) Modular design , easy maintenance, convenient installation and low cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of a power supply unit of the present utility model;

Fig. 3 is a schematic diagram of the command forwarding unit of the present invention;

Fig. 4 is a schematic diagram of the LED screen module of the present invention.

detailed description

The utility model is further described below in conjunction with specific embodiment, but protection scope of the utility model is not limited thereto:

Embodiment: as shown in Figure 1, a kind of LED display device based on mobile communication network is made up of solar panel or wind energy generator, power supply unit, command forwarding unit and LED screen module; Solar panel or wind energy generator are connected to power supply unit, the power supply unit is connected to the command forwarding unit and the LED screen module to supply power for these two components. The command forwarding unit is connected to the LED screen module through a 3-wire serial port to control its display.

Solar panels or wind generators convert solar energy or wind energy into electrical energy, and then convert it into a stable DC power supply through the power supply unit to supply power for the command forwarding unit and LED screen module; the command forwarding unit receives commands through the mobile communication network or serial port, and sends The command is forwarded to the LED screen module; the LED screen module displays text or graphics according to the received command.

The wind energy generator is recommended to use a micro-generator with a DC 12-24V output. The output current is selected according to the power requirements of the LED screen, and it is recommended not to be lower than 1A; the solar panel is recommended to use a module with a maximum output of 30V. The output current is based on The power requirements of the LED screen are selected, and it is recommended not to be lower than 1A; either a wind generator or a solar panel can be used, and if both are used at the same time, their respective voltage output terminals must be connected to one with sufficient reverse withstand voltage and rectification current The diode prevents the high-voltage side from flowing into the low-voltage side and causing damage.

As shown in Figure 2, the power supply unit includes a DC power socket externally installed on the PCB, a DC-DC module, a power management circuit, a power socket for the LED screen module, a power socket for the command forwarding unit, a battery and a casing. The external DC power socket connects the external power supply to the DC-DC module, and the DC-DC module converts the external DC voltage into 5V DC voltage and supplies it to the power management circuit. The DC-DC module is preferably a switching power supply module with high efficiency and a wide input voltage range. The recommended input voltage range is 6-36V, the output voltage is 5V, and the output current is selected according to the energy consumption of the LED screen. It should be able to output at least 2A. On the one hand, the power management circuit charges the battery, on the other hand, it divides the 5V voltage output by the DC-DC module into two channels, which are respectively fed to the socket of the command forwarding unit and the power socket of the LED screen module. If the output voltage of the external wind generator or solar panel is too low due to cloudy, dark night or low wind speed, etc., it will cause the output voltage of the DC-DC switching power supply to be too low. At this time, the power management circuit will automatically divide the battery voltage into 2 circuits. , which are respectively fed to the power socket of the command forwarding unit and the power socket of the LED screen module, so that the device can continue to work.

The battery capacity is selected according to the size of the LED screen and power consumption, and a lithium-ion battery with a capacity of 4.2V, 10000mAh or above is optional.

As shown in Figure 3, the command forwarding unit includes a mobile communication module installed on the PCB, a command input socket, an MCU circuit, a 9-pin D-type male plug, a power socket, and a shell. The power socket provides external power to the MCU and mobile communication module inside the unit. The MCU circuit obtains the command from the command input socket or the mobile communication module, and then outputs it through the 9-pin D-type male plug; the MCU circuit also forwards the response obtained from the 9-pin D-type male plug to the mobile communication module or the command input socket. MCU circuit includes MCU with 3 UART interfaces and necessary reset circuit, level conversion circuit and 3.3V power supply circuit. The two UART interfaces of the MCU are respectively connected to the mobile communication module and the command input socket, and the other UART interface is used to connect to the 9-pin D-type male plug. The FIRMWARE programmed in the MCU's internal FLASH checks the command and response, and forwards it after confirming that it is correct.

As shown in Figure 4, the LED screen module includes LED screens, LED screen controllers, power sockets and housings for installing these components. The power socket is connected to the power terminal of the LED screen controller and the LED screen to provide them with external power. The LED screen controller includes a connector for connecting to an external serial port. It can analyze the received command, and then output the LED screen driving signal according to the command to drive the LED screen to display graphics. The LED screen controller is a general-purpose component, and you can choose the appropriate model according to the type of display screen, but the selected model must have an RS232 serial communication interface and a 9-pin D-type female plug (for connecting to an external serial port).

In summary, the utility model has the following advantages:

1) Compared with advertisements and signs made of cloth and metal with fixed instructions, it can save a lot of manpower and material consumption;

2) These display devices can be managed remotely; using the mobile communication module as the communication interface of the LED display, the display content can be set remotely;

3) Using modular implementation, it can be compatible with the control methods of serial port and mobile communication interface;

4) The power supply part can use solar energy, wind power generation device, or AC 220V grid power supply, flexible use; suitable for urban and rural applications;

5) Modular design, convenient maintenance and lower cost.

The above description is the specific embodiment of the utility model and the technical principles used. If the changes made according to the concept of the utility model, the functions produced by it still do not exceed the spirit covered by the specification and accompanying drawings, Still should belong to the protection domain of the present utility model.

Claims (10)

1. based on a LED display for mobile communications network, it is characterized in that, comprising: Blast Furnace Top Gas Recovery Turbine Unit (TRT), power supply unit, transferring order unit, LED screen module; Blast Furnace Top Gas Recovery Turbine Unit (TRT) is connected with power supply unit, power supply unit respectively with transferring order unit, LED screen model calling; Transferring order unit and LED screen model calling.

2. a kind of LED display based on mobile communications network according to claim 1, is characterized in that: described Blast Furnace Top Gas Recovery Turbine Unit (TRT) is solar panel or wind-driven generator.

3. a kind of LED display based on mobile communications network according to claim 1, is characterized in that: described power supply unit comprises: Direct current power source socket, DC-DC module, electric power management circuit, LED screen module source socket, the supply socket of transferring order unit, battery, pcb board, shell; Direct current power source socket, DC-DC module, electric power management circuit, LED screen module source socket, the supply socket of transferring order unit are fixed on pcb board; Direct current power source socket, DC-DC module, electric power management circuit connect successively; Electric power management circuit is connected with LED screen module source socket, the supply socket of transferring order unit, battery respectively; Pcb board and battery are located in shell.

4. a kind of LED display based on mobile communications network according to claim 3, it is characterized in that: described DC-DC module is switch power module, its output voltage is 5V.

5. a kind of LED display based on mobile communications network according to claim 3, is characterized in that: described battery is lithium ion battery.

6. a kind of LED display based on mobile communications network according to claim 1, is characterized in that: described transferring order unit comprises: mobile communication module, order input socket, MCU circuit, public plug, supply socket, pcb board, shell; Mobile communication module, order input socket, MCU circuit, public plug, supply socket are fixed on pcb board; Supply socket is connected with mobile communication module, MCU circuit respectively; MCU circuit is connected with mobile communication module, order input socket, public plug respectively; Pcb board is located in shell.

7. a kind of LED display based on mobile communications network according to claim 6, is characterized in that: described MCU circuit comprises MCU, reset circuit, level shifting circuit, 3.3V power circuit with 3 UART interface; Two UART interface of MCU are connected with mobile communication module, order input socket respectively, and another one UART interface is used for connecting with public plug; MCU is connected with reset circuit, level shifting circuit, 3.3V power circuit respectively.

8. a kind of LED display based on mobile communications network according to claim 6, is characterized in that: described public plug is 9 pin D type public plugs.

9. a kind of LED display based on mobile communications network according to claim 1, is characterized in that: described LED screen module comprises: LED screen, LED screen controller, supply socket, shell; Supply socket is connected with LED screen controller, LED screen respectively; LED screen controller is connected with LED screen; LED screen, LED screen controller, supply socket are located at enclosure.

10. a kind of LED display based on mobile communications network according to claim 9, it is characterized in that: described LED screen controller is with connector and 9 pin D type females, with RS232 serial communication interface on 9 pin D type females, for connecting outside serial ports.