A method, device and system for automatically restoring an LED information screen after rotation

Abstract

The application relates to an LED information screen automatic recovery method, device and system, and relates to the technical field of LED information screens, wherein the automatic recovery method comprises the following steps: receiving a reset command: the system receives a reset signal; angle detection: detecting the included angle A between the current position of the LED information screen and the initial position of the LED information screen, and A is less than or equal to 180 degrees; resetting: rotating the LED information screen by -A, and then rotating the LED information screen to the initial position; locking: locking the LED information screen, the recovery device comprises a connecting carrier, a sleeve, an LED information screen, a resistance mechanism and an automatic reset module, and the recovery system comprises a display, a positioner and the recovery device. The application can reduce the maintenance difficulty of maintenance personnel and save manpower.

Description

Technical Field

[0001] This invention relates to the field of LED information screen technology, and more specifically to a method, apparatus, and system for automatically restoring an LED information screen after rotation. Background Technology

[0002] Information screens are a primary medium for information transmission, widely used in public places such as bus stops, traffic signs, commercial plazas, city streets, airports, train stations, and docks. With the rapid development of smart cities, information screens should evolve towards optoelectronic displays and intelligent control. In recent years, the increasing maturity of small-pitch LED and OLED information screens has made optoelectronic displays the mainstream information display terminal. To enable the application of LED and OLED display systems in information screens and meet the needs of various indoor and outdoor environments, key considerations include: the ease of installation and maintenance, manufacturing costs, and the heat dissipation and waterproofing of the display system.

[0003] Chinese invention patent CN115831004A, published on March 21, 2023, discloses a wind-resistant method, structure, system, facility, and smart LED information screen system. The system includes a connecting carrier, a sleeve, an LED information screen, and a resistance mechanism. The sleeve is fitted onto the connecting carrier and is rotatable relative to it. The LED information screen is mounted on the sleeve. The resistance mechanism is mounted on the connecting carrier and applies variable rotational resistance to the sleeve.

[0004] After a windy day, if the angle sensor detects a relative rotation between the sleeve and the connecting carrier, it indicates that the LED information screen corresponding to that angle sensor has also rotated relative to the connecting carrier. At this time, the angle sensor transmits a signal to the central processing unit, which then transmits the signal to the display. The display will then show the position information of the angle sensor. Maintenance personnel can then locate the corresponding LED information screen based on the position information displayed on the display and reset the corresponding LED information screen and the corresponding resistance mechanism. This reduces the manpower required and improves the efficiency of maintenance personnel in resetting the LED information screen.

[0005] For the aforementioned technologies, maintenance personnel typically need to go to the site to reset the LED information screen, which requires a lot of manpower and resources and is inefficient. Summary of the Invention

[0006] To reduce the maintenance difficulty for maintenance personnel, this invention provides a method, device, and system for automatically restoring an LED information screen after rotation.

[0007] In a first aspect, this application provides a method for automatically restoring an LED information screen after rotation, employing the following technical solution: A method for automatically restoring an LED information screen after rotation includes the following steps: Received reset command: The system received a reset signal; Angle detection: Detect the angle A between the current position of the LED information screen and its initial position, where A is less than or equal to 180 degrees; Reset: Rotate the LED information screen by negative A, thereby rotating the LED information screen to its initial position; Lock: Locks the LED information screen.

[0008] By adopting the above technical solution, after receiving the reset signal, the system controls the LED screen to return to its initial position. Using the above method, there is no need for manual on-site operation to reset the LED information screen. This method saves manpower, reduces the maintenance difficulty for maintenance personnel, improves the reset efficiency of the LED information screen, and makes the reset of the LED information screen more timely, avoiding affecting the transmission of advertisements, notices or other important information.

[0009] Optionally, a step of generating a reset command is provided before the step of receiving the reset command; The steps for generating a reset command include manual generation of a reset command and automatic generation of a reset command. Manually generate reset command: The operator issues a reset command; The automatic generation of reset commands includes steps such as detecting the current environment, calculating the expected forces, and making a preliminary judgment. Detect the current environment: Detect and record the current wind speed and direction; Calculate the expected force: Based on the current wind force and direction, predict the magnitude of the force F_pre when the LED information screen rotates to its initial position; Preliminary assessment: Determine whether Fprevious exceeds the maximum wind force Fmax that the LED information screen can withstand in the recent period. If Fprevious has consistently been less than the maximum wind force Fmax that the LED information screen can withstand in the recent period, then execute the step of receiving a reset command.

[0010] By adopting the above technical solution, the reset command received by the system can be issued by the operator or automatically generated by the system. The system automatically determines whether the LED information screen meets the reset conditions based on the current wind force and direction. The automatic generation of the reset command involves processes such as detecting the current environment, calculating the expected force, and making preliminary judgments, thus achieving intelligent and automated reset command generation. The system can automatically determine whether a reset is needed based on the real-time environment and force conditions, and generate the corresponding reset command, reducing the need for human intervention and improving the system's intelligence level. This allows the LED screen to reset in a timely manner. Simultaneously, operators can bypass the system's judgment and directly control the LED screen reset. The manual generation of the reset command provides operators with flexibility and controllability, allowing them to directly intervene and issue reset commands when necessary. This manual operation can handle special situations or emergencies, ensuring that the system can receive a timely response at critical moments.

[0011] Optionally, an angle determination step is further provided between the angle detection step and the reset step; Angle judgment: If A is less than 90°, the reset step is executed directly; if A is greater than or equal to 90°, the process judgment step I is executed. Process Judgment I: Calculate the maximum wind force Fpremax experienced by the LED information screen during its rotation to the initial position. If Fpremax is less than Fmax, execute the reset step; if Fpremax is greater than or equal to Fmax, execute the alarm I step. Alarm I: An alarm is issued, indicating that the reset conditions are not met.

[0012] By adopting the above technical solution, an angle judgment step is added. By analyzing the angle between the current state and the initial position of the LED screen, when A is less than 90°, the maximum wind force on the LED information screen is at the initial position, so it can be directly reset. When A exceeds 90°, the LED information screen may be subjected to a force exceeding Fmax during the reset process, and an alarm will be issued to indicate that the reset conditions are not met. Adding angle judgment and process judgment steps can more accurately determine whether the LED information screen meets the reset conditions, optimize the reset judgment process, and avoid damage to the LED information screen due to a force exceeding Fmax during the reset process.

[0013] Optionally, a command type determination step is provided after the angle determination step; Command type determination: In the step of receiving a reset command, if the reset command is an automatically generated reset command, the reset step is executed directly; if the reset command is a manually generated reset command, the current wind force determination step is executed. Current wind force determination: Determine whether the current wind force Fpre is greater than the maximum wind force Fmax that the LED information screen can withstand. If Fpre is less than the maximum wind force Fmax that the LED information screen can withstand, then execute the receive reset command step; otherwise, execute the alarm I step.

[0014] By adopting the above technical solution, the command type is determined. If the received reset command is issued manually, a current wind force judgment step is required. By calculating the force required for the LED information screen to return to its initial position at the current time, it is determined whether the LED screen is suitable for reset at the current time, so as to avoid damage caused by the force required for the LED signal screen to return to its initial position exceeding the maximum wind force value Fmax.

[0015] Optionally, a reset determination step is provided after the reset; Reset Judgment: After a period of time following the issuance of the reset command, the angle sensor detects whether the LED information screen has been fully reset. If the LED information screen has been fully reset, the locking step is executed; if the LED information screen has not been fully reset, the alarm II step is executed. Alarm II: An alarm is issued, indicating a malfunction during the reset process.

[0016] By adopting the above technical solution, the reset status of the LED information screen can be obtained in a timely manner. When the LED information screen fails to reset in time due to a fault, the fault information can be obtained in a timely manner so that maintenance personnel can go to the site for repair in a timely manner and avoid affecting the transmission of advertisements, notices or other important information.

[0017] Optionally, after the alarm II step, a location sending step is also provided; Location transmission: Detect the current location of the LED information screen and send the location of the LED information screen to the monitoring terminal.

[0018] By adopting the above technical solution, the location transmission step can quickly detect the current position of the LED information screen and send this information to the monitoring terminal. In this way, once an alarm occurs, the monitoring terminal can quickly know the specific location of the alarm, which is conducive to rapid response and appropriate measures. The location transmission step is set after the alarm II step, enabling the rapid and accurate transmission of the LED information screen's position information to the monitoring terminal, improving the efficiency and accuracy of alarm response, and enhancing monitoring and management efficiency.

[0019] Secondly, this application provides an automatic recovery device for an LED information screen after rotation, employing the following technical solution: An automatic recovery device for an LED information screen after rotation includes a connecting carrier, a sleeve, an LED information screen, a resistance mechanism, and an automatic reset module. The sleeve is fitted onto the connecting carrier and can rotate relative to the connecting carrier. The LED information screen is disposed on the sleeve. The automatic reset module includes multiple first electromagnets, second electromagnets, an environmental sensor, and a calibration analysis module. The environmental sensor is disposed on the connecting carrier, and its initial position orientation is parallel to that of the LED information screen. The environmental sensor is electrically connected to the main controller. The calibration analysis module includes an angle encoder. Multiple first electromagnets are disposed on the sleeve and evenly arranged along the circumference of the sleeve. Second electromagnets are disposed on the connecting carrier. The first electromagnets, second electromagnets, and the angle encoder are all electrically connected to the main controller. The resistance mechanism is disposed on the connecting carrier to apply rotational resistance to the sleeve.

[0020] Through the above technical solution, the angle encoder can record the rotation angle of the LED information screen and send it to the main controller. When the reset condition is met, the main controller controls the second electromagnet and the first electromagnet closest to the second electromagnet to be energized according to the data recorded by the angle encoder. The two electromagnets attract each other and drive the LED information screen to rotate. The adjacent first electromagnets are energized in turn until the LED information screen returns to the initial angle. There is no need for maintenance personnel to frequently go to the site to reset the LED information screen, which can save manpower and resources. The rotation reset of the LED information screen by electromagnets does not require large slots to be opened on the connecting carrier, which can minimize the reduction of the structural strength of the connecting carrier and maintain the overall stability. The environmental sensor can detect the wind force and direction of the current environment and send the detected data to the main controller. The main controller determines whether the current environment and the wind force at the initial position of the LED information screen in the recent period meet the reset condition based on the data information. If the reset condition is met, the main controller sends electrical signals to the first and second electromagnets to execute the reset operation.

[0021] Optionally, the resistance mechanism includes a push rod, a slider, a straight groove rod, and a spring. The straight groove rod is fixedly disposed within the connecting carrier, and a straight groove is formed on the straight groove rod. The slider is slidably disposed within the straight groove. One end of the spring is disposed on the slider, and the other end of the spring is disposed at one end of the straight groove rod. The push rod is disposed at one end of the slider, and the connecting carrier has a first hole corresponding to the position of the push rod.

[0022] Through the above technical solution, the spring has elastic force to squeeze the slider, and the slider drives the top rod to pass through the corresponding hole on the connecting carrier and squeeze the sleeve, applying rotational resistance to the LED information screen. This keeps the LED information screen relatively fixed to the connecting carrier when the wind is small. At the same time, applying a certain rotational resistance can ensure that the speed of the LED information screen is more stable when rotating, without large speed fluctuations, which helps to improve the measurement accuracy of the angle encoder.

[0023] Optionally, the resistance mechanism further includes an electric push rod and a fixing block. The housing of the electric push rod is disposed at one end of the slider, the fixing block is disposed on the straight groove rod, the electric push rod is electrically connected to the main controller, and a second hole is provided on the sleeve.

[0024] With the above technical solution, after the reset is completed, the main controller controls the electric push rod to start, the telescopic rod of the electric push rod extends, the telescopic rod presses against the fixing block, so that the top rod is inserted into the second hole to lock the LED information screen, so that the wind cannot blow the LED information screen to rotate, thus avoiding affecting the transmission of advertisements, notices or other important information.

[0025] Thirdly, the LED information screen rotation recovery system provided in this application adopts the following technical solution: An LED information screen rotation recovery system includes a display, a locator, and at least one LED information screen recovery device as described in the second aspect. The locator is installed inside the LED information screen. The main controller is electrically connected to the display and the locator. The display is used to display the position information and rotation angle information of the LED information screen.

[0026] By adopting the above technical solution, maintenance personnel can locate the corresponding LED information screen based on the location information displayed on the monitor and repair the corresponding LED information screen, thereby reducing personnel input and improving the efficiency of maintenance personnel in resetting LED information screens.

[0027] In summary, the present invention has at least one of the following beneficial technical effects: The reset command received by the system can be issued by the operator or generated automatically by the system. The system automatically determines whether the LED information screen meets the reset conditions based on the current wind force and direction. The automatic generation of the reset command involves processes such as detecting the current environment, calculating the expected force, and making preliminary judgments, thus achieving intelligent and automated reset command generation. The system can automatically determine whether a reset is needed based on real-time environmental and force conditions and generate the corresponding reset command, reducing the need for human intervention and improving the system's intelligence level.

[0028] The location transmission step can quickly detect the current position of the LED information screen and send this information to the monitoring terminal. This allows the monitoring terminal to quickly ascertain the specific location of the alarm upon its occurrence, facilitating rapid response and appropriate measures. The location transmission step, set after the Alarm II step, enables the rapid and accurate transmission of the LED information screen's location information to the monitoring terminal, improving the efficiency and accuracy of alarm response and enhancing monitoring and management efficiency. Attached Figure Description

[0029] Figure 1 This is a flowchart of Example 1; Figure 2 This is a schematic diagram of the overall three-dimensional structure of Example 2; Figure 3 This is a schematic diagram of the structure of the first electromagnet and the second electromagnet in Example 2; Figure 4 This is a cross-sectional schematic diagram of the overall structure of Example 2; Figure 5 This is a partially enlarged three-dimensional structural schematic diagram of Example 2; Figure 6 This is a three-dimensional structural schematic diagram of the resistance mechanism in Example 2.

[0030] Explanation of reference numerals in the attached drawings: 110, connecting carrier; 1101, first hole; 120, sleeve; 1201, second hole; 121, pin hole; 130, LED information screen; 131, connecting frame; 140, environmental sensor; 150, first electromagnet; 160, second electromagnet; 200, resistance mechanism; 210, support rod; 220, straight groove rod; 230, spring; 240, electric push rod; 250, fixing block; 260, slider; 270, top rod. Detailed Implementation

[0031] The following combination Figures 1 to 6 The present invention will be described in further detail below.

[0032] Example 1: This application discloses a method for automatically restoring an LED information screen after rotation, including the following steps: S1: Generate reset command: The steps for generating a reset command include manual reset command generation step S1-1 and automatic reset command generation step S1-2; S1-1: Manually generate reset command: The operator issues a reset command; S1-2: Automatically generate reset command: including the current environment detection step S1-2-1, the expected force calculation step S1-2-2, and the preliminary judgment step S1-2-3; S1-2-1: Detect the current environment: Detect and record the current wind force and direction; S1-2-2: Calculate the expected force: Based on the current wind force and direction, predict the magnitude of the force F_pre when the LED information screen rotates to the initial position; S1-2-3: Preliminary judgment: Determine whether Fpre is greater than the maximum wind force Fmax that the LED information screen can withstand in the recent period. If Fpre is always less than the maximum wind force Fmax that the LED information screen can withstand in the recent period, it proves that the wind force has been reduced in the recent period and the LED information screen is suitable for reset. Then execute the reset command receiving step S2. S2: Receive reset command: The system has received a reset signal; S3: Angle Detection: Detects the angle A between the current position of the LED information screen and the initial position of the LED information screen, where A is less than or equal to 180 degrees; S4: Angle judgment: If A is less than 90°, it proves that the maximum force point of the LED signal screen is at the initial position, and the command type judgment step S6 is executed directly; if A is greater than or equal to 90°, it means that the maximum force point of the LED signal screen appears during the reset process, so the process judgment step S5 is executed. S5: Process Judgment I: Calculate the maximum wind force Fpremax experienced by the LED information screen during its rotation to the initial position. If Fpremax is less than Fmax, it means that the maximum force on the LED during the reset process is less than the maximum wind force Fmax that the LED information screen can withstand. Therefore, execute the reset step S9. If Fpremax is greater than or equal to Fmax, it means that the maximum force on the LED during the reset process is less than the maximum wind force Fmax that the LED information screen can withstand. Therefore, execute the alarm I step S8. S6: Command type judgment: In the reset command receiving step S2, if the reset command is an automatically generated reset command, the reset step S9 can be executed directly; if the reset command is a manually generated reset command, the reset may not be timely, which may cause damage to the LED signal screen during the reset process. Therefore, the current wind force judgment step S7 is executed. S7: Current wind force judgment: Determine whether the current time F_pre is greater than the maximum wind force value F_max that the LED information screen can withstand. If F_pre is less than the maximum wind force value F_max that the LED information screen can withstand, it proves that the LED signal screen will not be damaged when it returns to its initial position. Therefore, execute the reset command step S9. Otherwise, it proves that the LED signal screen may be damaged if it returns to its initial position. Therefore, execute the alarm I step S8. S8: Alarm I: Issues an alarm indicating that the reset conditions are not met; S9: Reset: Rotate the LED information screen by negative A, thereby rotating the LED information screen to the initial position; S10: Reset Judgment: After a period of time after the reset command is issued, the angle sensor detects whether the LED information screen has been completely reset. If the LED information screen has been completely reset, the locking step S13 is executed; if the LED information screen has not been completely reset, it indicates that there is a problem in the reset process, so the alarm II step S11 is executed. S11: Alarm II: Issues an alarm indicating a fault occurred during the reset process; S12: Location Transmission: Detect the current position of the LED information screen and send the position of the LED information screen to the monitoring terminal; S13: Lock: Lock the LED information screen.

[0033] The implementation principle of the wind-resistant method for LED information screens in this application embodiment is as follows: The wind force and direction of the current environment are detected, and the actual wind force F when the LED information screen rotates to the initial position is calculated according to Bernoulli's equation: F = V*V*S / 1600, where V is the wind speed perpendicular to the LED information screen and S is the area of ​​the LED information screen. When wind blows across the LED information screen, the LED information screen and the connecting carrier rotate relative to each other to reduce the area of ​​the LED information screen exposed to the wind, thereby reducing the wind force on the LED information screen and thus reducing the internal stress generated when the LED information screen is blown by the wind, thus maintaining the lifespan of the LED information screen.

[0034] Operators can remotely send reset commands to control the LED information screen to reset. At the same time, the system can also automatically determine whether the LED information screen meets the reset conditions based on the current wind force and direction, as well as the wind force and direction conditions in the recent period. When the reset conditions are met, the system will control the LED information screen to reset.

[0035] After the reset process is completed, the information recorded by the angle sensor can be used to promptly obtain the reset status of the LED information screen. If the LED information screen fails to reset in time due to a fault, the fault information can be obtained in time, an alarm can be issued, and maintenance personnel can be notified to come to the site for repair in time to avoid affecting the transmission of advertisements, notices or other important information. When the LED information screen is successfully reset, a locking step is executed to lock the LED information screen.

[0036] Example 2: This application discloses an automatic recovery device for an LED information screen after rotation, including a connecting carrier 110, a sleeve 120, an LED information screen 130, a resistance mechanism 200, and an automatic reset module. The sleeve 120 is sleeved on the connecting carrier 110 and can rotate relative to the connecting carrier 110. The LED information screen 130 is fixedly connected to the sleeve 120 through a connecting frame 131. The resistance mechanism 200 is used to apply rotational resistance between the sleeve 120 and the connecting carrier 110. The automatic reset module is used for the rotational reset of the LED information screen 130.

[0037] The resistance mechanism 200 includes a push rod 270, a slider 260, a straight groove rod 220, and a spring 230. The straight groove rod 220 is fixedly disposed within the connecting carrier 110, and a straight groove is formed on the straight groove rod 220. The slider 260 is slidably disposed within the straight groove. One end of the spring 230 is disposed on the slider 260, and the other end of the spring 230 is disposed at one end of the straight groove rod 220. The push rod 270 is disposed at one end of the slider 260. The connecting carrier 110 has a first hole 1101 corresponding to the position of the push rod 270.

[0038] Specifically, the spring 230 has elastic force to compress the slider 260. The slider 260 drives the top rod 270 to pass through the corresponding hole on the connecting carrier 110 and compress the sleeve 120, applying rotational resistance to the LED information screen 130. This keeps the LED information screen 130 relatively fixed to the connecting carrier 110 when the wind is relatively weak. At the same time, applying a certain rotational resistance can ensure that the speed of the LED information screen 130 is more stable when rotating, without large speed fluctuations, which helps to improve the measurement accuracy of the angle encoder.

[0039] The automatic reset module includes multiple first electromagnets 150, second electromagnets 160, and a calibration and analysis module. The calibration and analysis module includes an angle encoder. The multiple first electromagnets 150 are all disposed on the sleeve 120 and are evenly arranged along the circumference of the sleeve 120. The second electromagnets 160 are disposed on the connecting carrier 110. The first electromagnets 150, second electromagnets 160, and angle encoder are all electrically connected to the main controller.

[0040] The automatic reset module also includes an environmental sensor 140, which is mounted on the connecting carrier 110. The environmental sensor 140 and the LED information screen 130 are initially parallel to each other, and the environmental sensor 140 is electrically connected to the main controller.

[0041] Specifically, the environmental sensor 140 can detect the wind force and direction of the current environment and send the detected data to the main controller. The main controller determines whether the current environment and the wind force received by the LED information screen 130 at its initial position in the recent period meet the reset conditions based on the data information. If the reset conditions are met, the main controller sends electrical signals to the first electromagnet 150 and the second electromagnet 160 to perform the reset operation.

[0042] The resistance mechanism 200 also includes an electric push rod 240 and a fixing block 250. The electric push rod 240 is disposed at one end of the slider 260, and the fixing block 250 is disposed on the straight groove rod 220. The electric push rod 240 is electrically connected to the main controller, and a second hole 1201 is provided on the sleeve 120.

[0043] Specifically, after the reset is completed, the telescopic rod of the electric push rod 240 extends, the telescopic rod presses against the fixing block, the spring 230 has elastic force to press against the slider 260, the slider 260 drives the top rod 270 to pass through the connecting carrier 110 and insert into the second hole 1201 of the sleeve 120, applying rotational resistance to the LED information screen 130, so that the LED information screen 130 remains relatively fixed with the connecting carrier 110 under normal wind conditions.

[0044] The implementation principle of the automatic recovery device for an LED information screen 130 after rotation according to an embodiment of the present invention is as follows: When the force exerted by the wind on the LED information screen 130 is greater than the rotational resistance between the connecting carrier 110 and the sleeve 120, the LED information screen 130 and the connecting carrier 110 will rotate relative to each other, thereby reducing the wind-receiving area of ​​the LED information screen 130 and thus reducing the force on the LED information screen 130.

[0045] The environmental sensor 140 can detect the wind force and direction of the current environment and send the detected data to the main controller. The main controller determines whether the current environment and the wind force experienced by the LED information screen 130 at its initial position in the recent period meet the reset conditions based on the data information. If the reset conditions are met, the main controller obtains the rotation angle of the LED information screen 130 recorded by the angle encoder. When the rotation angle of the LED information screen 130 is less than 90 degrees, the reset step is executed. When the rotation angle of the LED information screen 130 is greater than 90 degrees, the maximum value of the wind force Fpremax experienced by the LED information screen 130 during its rotation to the initial position is calculated. If Fpremax is less than Fmax, the reset step is executed.

[0046] When the reset conditions are met, the main controller energizes the second electromagnet 160 and the first electromagnet 150 closest to the second electromagnet 160. The second electromagnet 160 and the closest first electromagnet 150 attract each other and drive the LED information screen 130 to rotate. The adjacent first electromagnets 150 are energized in sequence until the LED information screen 130 returns to its initial angle. This eliminates the need for maintenance personnel to frequently go to the site to reset the LED information screen 130, saving manpower and resources. Compared with the traditional method of rotating the LED information screen 130 by driving gears with an electromagnet, it does not require a large slot to be made on the connecting carrier 110, which can minimize the reduction of the structural strength of the connecting carrier 110 and maintain the overall stability.

[0047] After the reset is completed, the main controller controls the electric push rod 240 to be energized, so that the telescopic rod of the electric push rod 240 pushes the fixed block 250. The fixed block 250 drives the slider 260 and the top rod 270 to move. The top rod 270 is inserted into the second hole 1201 on the sleeve 120 to lock the LED information screen 130. At this time, the wind force is less than the maximum value that the LED information screen 130 can withstand, and will not damage the LED information screen 130. The wind cannot blow the LED information screen 130 to rotate, so as to avoid affecting the transmission of advertisements, notices or other important information.

[0048] Example 3: This application discloses an automatic recovery system for an LED information screen after rotation, including a display, a locator, and at least one LED information screen recovery device as described in Example 2. The locator is installed inside the LED information screen 130. The main controller is electrically connected to the display and the locator. The display is used to display the position information of the LED information screen 130 and the rotation angle information of the LED information screen 130.

[0049] The implementation principle of the automatic recovery system for an LED information screen after rotation according to an embodiment of the present invention is as follows: Maintenance personnel locate the corresponding LED information screen 130 based on the location information displayed on the monitor and perform repairs on the corresponding LED information screen 130, reducing personnel input and improving the efficiency of maintenance personnel in resetting the LED information screen 130.

[0050] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for automatically restoring an LED information screen after rotation, characterized in that: Includes the following steps: Steps for generating a reset command: The steps for generating a reset command include manual steps and automatic steps. Manually generate reset command: The operator issues a reset command; The automatic generation of reset commands includes steps such as detecting the current environment, calculating the expected forces, and making a preliminary judgment. Detect the current environment: Detect and record the current wind speed and direction; Calculate the expected force: Based on the current wind force and direction, predict the magnitude of the force F_pre when the LED information screen rotates to its initial position; Preliminary assessment: Determine whether, in the recent period, wind force Fpredicted has exceeded the maximum wind force Fmax that the LED information screen can withstand. If wind force Fpredicted has consistently been less than the maximum wind force Fmax that the LED information screen can withstand in the recent period, then execute the step of receiving a reset command. Received reset command: The system received a reset signal; Angle detection: Detect the angle A between the current position of the LED information screen and its initial position, where A is less than or equal to 180 degrees; Angle judgment: If A is less than 90°, the reset step is executed directly; if A is greater than or equal to 90°, the process judgment step I is executed. Process Judgment I: Calculate the maximum wind force Fpremax experienced by the LED information screen during its rotation to the initial position. If Fpremax is less than Fmax, execute the reset step; if Fpremax is greater than or equal to Fmax, execute the alarm I step. Alarm I: An alarm is issued, indicating that the reset conditions are not met; Reset: Rotate the LED information screen by negative A, thereby rotating the LED information screen to its initial position; Lock: Locks the LED information screen.

2. The method for automatic recovery of an LED information screen after rotation according to claim 1, characterized in that: A command type determination step is also set after the angle determination step; Command type determination: In the step of receiving a reset command, if the reset command is an automatically generated reset command, the reset step is executed directly; if the reset command is a manually generated reset command, the current wind force determination step is executed. Current wind force determination: Determine whether the current wind force Fpre is greater than the maximum wind force Fmax that the LED information screen can withstand. If Fpre is less than the maximum wind force Fmax that the LED information screen can withstand, then execute the receive reset command step; otherwise, execute the alarm I step.

3. The method for automatic recovery of an LED information screen after rotation according to claim 2, characterized in that: The reset process is further configured with a reset judgment step; Reset Judgment: After a period of time following the issuance of the reset command, the angle sensor detects whether the LED information screen has been fully reset. If the LED information screen has been fully reset, the locking step is executed; if the LED information screen has not been fully reset, the alarm II step is executed. Alarm II: An alarm is issued, indicating a malfunction during the reset process.

4. The method for automatic recovery of an LED information screen after rotation according to claim 3, characterized in that: Following the alarm II step, a location sending step is also provided; Location transmission: Detect the current location of the LED information screen and send the location of the LED information screen to the monitoring terminal.

5. A device for restoring an LED information screen after rotation using the automatic recovery method of any one of claims 1-4, characterized in that: The system includes a connecting carrier (110), a sleeve (120), an LED information screen (130), a resistance mechanism (200), and an automatic reset module. The sleeve (120) is fitted onto the connecting carrier (110) and can rotate relative to the connecting carrier (110). The LED information screen (130) is mounted on the sleeve (120). The automatic reset module includes multiple first electromagnets (150), second electromagnets (160), an environmental sensor (140), and a calibration analysis module. The environmental sensor (140) is mounted on the connecting carrier (110). On the 0), the environmental sensor (140) is electrically connected to the main controller. The calibration analysis module includes an angle encoder. Multiple first electromagnets (150) are all arranged on the sleeve (120) and evenly distributed along the circumference of the sleeve (120). The second electromagnet (160) is arranged on the connecting carrier (110). The first electromagnet (150), the second electromagnet (160), and the angle encoder are all electrically connected to the main controller. The resistance mechanism (200) is arranged on the connecting carrier (110) to apply rotational resistance to the sleeve (120).

6. The LED information screen rotation recovery device according to claim 5, characterized in that: The resistance mechanism (200) includes a push rod (270), a slider (260), a straight groove rod (220), and a spring (230). The straight groove rod (220) is fixedly disposed in the connecting carrier (110). A straight groove is provided on the straight groove rod (220). The slider (260) is slidably disposed in the straight groove. One end of the spring (230) is disposed on the slider (260), and the other end of the spring (230) is disposed at one end of the straight groove rod (220). The push rod (270) is disposed at one end of the slider (260). The connecting carrier (110) has a first hole (1101) corresponding to the position of the push rod (270).

7. The LED information screen rotation recovery device according to claim 6, characterized in that: The resistance mechanism (200) further includes an electric push rod (240) and a fixing block (250). The electric push rod (240) is disposed at one end of the slider (260), and the fixing block (250) is disposed on the straight groove rod (220). The electric push rod (240) is electrically connected to the main controller, and a second hole (1201) is provided on the sleeve (120).

8. A system for restoring an LED information screen after rotation, characterized in that: The device includes a display, a locator, and at least one LED information screen recovery device as described in claim 7. The locator is installed inside the LED information screen (130). The main controller is electrically connected to the display and the locator. The display is used to display the position information of the LED information screen (130) and the rotation angle information of the LED information screen (130).

Images