An automatic switching car landing display device and a control method thereof

Abstract

The application belongs to the technical field of elevator car, and particularly relates to an automatic opening and closing car landing display device and a control method thereof. The device comprises a shell, a first window and a second window on one side of the shell, the first window and the second window being opposite to a car door; a laser ranging module, a detection end of the laser ranging module corresponding to the position of the first window, the laser ranging module being used for detecting the state of the car door; a projection device, the projection device being installed in the shell, a projection end of the projection device projecting toward the car door through the second window; a switch mechanism, the switch mechanism being installed in the shell, the switch mechanism comprising an executing mechanism and a baffle, the executing mechanism being configured to drive the baffle to cover or expose the second window; a main control unit, the main control unit receiving a signal of the laser ranging module and sending a control signal to the executing mechanism according to the signal of the laser ranging module, the executing mechanism driving the baffle to cover or expose the second window according to the control signal; and a mounting seat, a mounting plate being arranged on the mounting seat through an angle adjusting mechanism, the shell being mounted on the mounting plate. The overall structure is simple, and installation and reconstruction are convenient.

Description

Technical Field

[0001] This application belongs to the field of elevator car technology, and in particular relates to an automatic switch car landing display device and its control method. Background Technology

[0002] Currently, elevator cars and landings are generally equipped with projection display devices to display visual information such as floor information, friendly reminders, advertisements, and safety warnings, improving the elevator riding experience and the level of building intelligence. Most existing elevator projection display devices are in a continuously powered mode, relying solely on manual timed start / stop, fixed-time on / off control, or manual button operation, making setup relatively complex. A few projection devices that are linked to elevator door operator signals simply force the projection power on and off based on door opening / closing signals, requiring connection to the elevator control system, which limits future elevator retrofitting. Summary of the Invention

[0003] To address the technical problems of complex setup and limited modification of existing floor display devices, this application provides an automatically opening and closing car floor display device and its control method.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is an automatic opening and closing car floor display device, comprising:

[0005] The housing has a first window and a second window on one side, with the first window and the second window facing the car door.

[0006] A laser ranging module is installed inside the housing, with its detection end corresponding to the position of the first window, and is used to detect the status of the car door.

[0007] A projection device is installed inside the housing, and its projection end projects onto the car door through the second window.

[0008] A switching mechanism, installed within a housing, includes an actuator and a baffle disposed at the output end of the actuator, the actuator being configured to drive the baffle to cover or expose a second window.

[0009] The main control unit receives signals from the laser ranging module and sends control signals to the actuator according to the signals from the laser ranging module. The actuator drives the baffle to cover or expose the second window according to the control signals.

[0010] The mounting base and mounting plate are mounted on the mounting base via an angle adjustment mechanism, and the housing is mounted on the mounting plate.

[0011] In some embodiments, the housing includes two first panels, two second panels, and two third panels arranged opposite to each other, the projection end of the projection device is facing one of the first panels, and the mounting plate is connected to one of the second panels.

[0012] In some embodiments, the first window and the second window are disposed on the first panel, and the projection end of the projection device is directly opposite the second window.

[0013] In some embodiments, the actuator is fixedly mounted on the first panel.

[0014] In some embodiments, the actuator is fixedly mounted on the second panel away from the mounting plate, the baffle is a flexible baffle, and the second panel and the first panel are provided with communicating guide grooves, and the baffle is slidably disposed in the guide grooves.

[0015] In some embodiments, the flexible baffle includes a plurality of baffles arranged side by side, with adjacent baffles connected by a hinge.

[0016] In some embodiments, the first window and the second window are disposed on the second panel away from the mounting plate, the projection direction of the projection end of the projection device is perpendicular to the opening direction of the second window, and a reflector is also disposed inside the housing, the reflector being located between the second window and the projection end of the projection device.

[0017] In some embodiments, the actuator is mounted on the second panel of the second window.

[0018] In some embodiments, the angle adjustment mechanism includes a first inclined groove and a second inclined groove disposed on the side wall of the mounting base. Both the first and second inclined grooves are provided with locking bolts, one end of which is threadedly connected to the mounting plate.

[0019] The present invention also provides a control method for the automatic switch car landing display device, wherein the landing display device is installed inside the car, and the first window and the second window are facing the car door;

[0020] If the car door is opened, the laser ranging module detects that the distance to the obstruction in front is greater than the preset threshold and sends a signal to the main control unit. The main control unit determines that it is an open environment and sends a control signal to the switching mechanism. The actuator drives the baffle to cover the second window.

[0021] After the car door closes, it forms a close-range obstruction to the laser ranging module. The laser ranging module sends a signal to the main control unit, which determines that the door is closed. The active unit sends a control signal to the switching mechanism, and the actuator drives the baffle to expose the second window.

[0022] Beneficial Effects: This application utilizes a laser ranging module to detect the opening and closing status of the elevator car door. The main control unit, based on the signal from the laser ranging module, controls a switching mechanism to cover or reveal the second window. When the car door is open, if the laser ranging module detects an obstruction at a distance greater than a preset threshold, the main control unit controls the switching mechanism to cover the second window, preventing direct projection of the projection device onto passengers entering the car. Conversely, when the car door is closed, the switching mechanism reveals the second window, allowing the projection device to project onto the car door. The accompanying mounting base allows for effective adjustment of the projection angle, facilitating operation. The overall structure is simple, installation and modification are convenient, and no changes to the existing elevator main control system are required. It can be adapted for installation in newly built elevators or used for upgrading and retrofitting projection display equipment in older elevators, making it widely applicable. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the floor display device;

[0024] Figure 2 This is a schematic diagram of the internal structure of a floor display device;

[0025] Figure 3 A cross-sectional view of another type of floor display device;

[0026] Figure 4 A schematic diagram of the housing structure of a vertically placed, reflective layered display device.

[0027] Figure 5 A schematic diagram of the internal structure of a vertically mounted, reflective layered display device.

[0028] Figure 6 This is a control principle diagram.

[0029] In the figure: 1. Housing, 11. First panel, 12. Second panel, 13. Third panel, 14. First window, 15. Second window, 16. Guide groove, 2. Mounting base, 21. Mounting plate, 22. First inclined groove, 23. Second inclined groove, 24. Locking bolt, 3. Laser ranging module, 4. Projection device, 41. Reflector, 5. Switching mechanism, 51. Actuating mechanism, 52. Baffle, 6. Main control unit. Detailed Implementation

[0030] The present application will be further described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making creative changes are within the protection scope of the present application.

[0031] like Figure 1 and 2 As shown, the automatic switch elevator car landing display device provided by the present invention includes a housing 1, a laser ranging module 3, a projection device 4, a switching mechanism 5, a main control unit 6, and a mounting base 2. The laser ranging module 3, the projection device 4, the switching mechanism 5, and the main control unit are all installed inside the housing 1, and the housing 1 is installed inside the mounting base 2, which is used for connection to the inner wall of the elevator car.

[0032] One side of the housing 1 has a first window 14 and a second window 15, which face the car door. The detection end of the laser ranging module 3 corresponds to the position of the first window 14 and is used to detect the status of the car door. The projection device 4 is installed inside the housing 1, and its projection end projects onto the car door through the second window 15. The switching mechanism 5 is installed inside the housing 1 and includes an actuator 51 and a baffle 52 disposed at the output end of the actuator 51. The actuator 51 is configured to drive the baffle 52 to cover or expose the second window 15. Figure 6As shown, the MCU main control unit 6 receives signals from the laser ranging module 3 and sends control signals to the actuator 51 according to the signals from the laser ranging module 3. The actuator 51 drives the baffle 52 to cover or expose the second window 15 according to the control signals. The mounting plate 21 is set on the mounting base 2 through an angle adjustment mechanism, and the housing 1 is mounted on the mounting plate 21. Specifically, the mounting base 2 is installed on the inner wall of the elevator, and the housing 1 is installed on the mounting plate 21, so that the first window 14 and the second window 15 on the housing 1 face the elevator car door. The angle of the mounting plate 21 on the mounting base 2 is adjusted by the adjustment mechanism, thereby adjusting the angle of the second window 15 relative to the car door. When the elevator car door opens, the detection end of the laser ranging module 3 detects that the distance to the obstruction has increased and transmits the signal to the MCU main control unit 6. The MCU main control unit 6 compares the distance signal with a set threshold. If the threshold is 1.5m, the detected distance is greater than 1.5m, and the MCU main control unit 6 determines that it is an open environment. It then sends a control signal to the actuator 51, which controls the baffle 52 to block the second window 15, thereby blocking the light outlet of the projection device 4 and stopping the projection onto the elevator car door to prevent light interference to passengers entering the car. Conversely, when the car door closes, the detection end of the laser ranging module 3 detects that the distance between the obstruction and the car door has decreased. The MCU main control unit 6 determines that the distance is less than the threshold of 1.5m, determines that the door is closed, and sends a control signal to the actuator 51. The actuator 51 controls the baffle 52 to move away from the second window 15, allowing the projection device 4 to project onto the car door normally.

[0033] In some embodiments, when the MCU main control unit 6 determines that the environment is open, it can also send a power cut-off or sleep control signal to the projection device 4 to stop the projection output and save power. When the environment is determined to be closed, it can send a power-on or wake-up control signal to the projection device 4 to enable the projection device 4 to project normally.

[0034] The actuator 51 can be an electric push rod. The motor of the electric push rod rotates, which in turn drives the output end to extend and retract, thereby driving the baffle 52 to move relative to the second window 15.

[0035] like Figure 1 As shown, in some embodiments, the housing 1 includes two first panels 11, two second panels 12, and two third panels 13 arranged opposite to each other. The projection end of the projection device 4 is directly facing one of the first panels 11, and the mounting plate 21 is connected to one of the second panels 12. Furthermore, to facilitate heat dissipation, heat dissipation holes are provided on the housing 1.

[0036] like Figure 1As shown, in some embodiments, the first window 14 and the second window 15 are disposed on the first panel 11, and the projection end of the projection device 4 is directly opposite the second window 15. This structure is a flat, direct-projection structure, that is, the first panel 11 with the second window 15 is directly opposite the elevator car door. During installation, the panel away from the second window 15 of the mounting base 2 is connected and fixed to the inner wall of the car. The projection end of the projection device 4 and the first window 14 are both directly opposite the car door. This structure is easy to install, the internal structure of the housing 1 is simple, and the projection of the projection device 4 is directly projected onto the car door through the second window 15.

[0037] In the above schemes, in some embodiments, such as Figure 2 As shown, the actuator 51 is fixedly installed on the first panel 11, and the extension direction of its output end is perpendicular to the projection direction of the projection device 4. Then the actuator 51 drives the baffle 52 to start blocking from one side of the second window 15. As the baffle 52 moves, the projection of the projection device 4 on the car door also gradually disappears from that side.

[0038] In other embodiments, such as Figure 3 As shown, the actuator 51 is fixedly installed on the second panel 12 away from the mounting plate 21. The baffle 52 is a flexible baffle 52. The second panel 12 and the first panel 11 are provided with a connecting guide groove 16, and the baffle 52 is slidably disposed in the guide groove 16. Since the second panel 12 and the first panel 11 are perpendicular, and the actuator 51 is located above the first panel 11, that is, above the second window 15, similar to the structure of a roller shutter door, when the actuator 51 extends, one end of the flexible baffle 52 blocks the second window 15 from above along the guide groove 16. As the baffle 52 moves, the projection of the projection device 4 on the car door gradually disappears from above, which can effectively reduce the impact of the projection light of the projection device 4 on the eyes of passengers entering the elevator, and greatly improve the comfort of passengers using the elevator.

[0039] Specifically, as a concrete implementation of the flexible baffle 52, the flexible baffle 52 includes multiple baffles arranged side by side, with adjacent baffles connected by hinges. The baffles are connected by hinges and can rotate relative to each other, forming a flexible structure.

[0040] like Figure 4 and 5As shown, in another embodiment, the first window 14 and the second window 15 are disposed on the second panel 12 away from the mounting plate 21. The projection direction of the projection end of the projection device 4 is perpendicular to the opening direction of the second window 15. A reflector 41 is also disposed inside the housing 1, and the reflector 41 is located between the second window 15 and the projection end of the projection device 4. This structure is a vertical, reflective structure, that is, the second panel 12 where the second window 15 is disposed is directly opposite the elevator car door. During installation, the panel of the mounting base 2 near the mounting plate 21 is connected and fixed to the inner wall of the car. The projection direction of the projection end of the projection device 4 faces the bottom surface of the car, and the projection is reflected by the reflector 41 and projected onto the car door through the second window 15. This installation structure allows the mounting base 2 and the housing 1 to be installed close to the side wall of the car, with a small protrusion from the side wall of the car, thus having a small impact on passengers inside the car.

[0041] In the above-mentioned vertical, reflective structures, such as Figure 5 As shown, in some embodiments, the actuator 51 is mounted on the second panel 12 of the second window 15. Specifically, the output end of the actuator 51 extends vertically, and the vertical movement of the output end of the actuator 51 drives the baffle 52 to rise and fall. The baffle 52 blocks the second window 15 from above. As the baffle 52 descends, the projection of the projection device 4 on the car door gradually disappears from above, which can effectively reduce the impact of the projection light of the projection device 4 on the eyes of passengers entering the elevator, and greatly improve the comfort of passengers using the elevator.

[0042] As a specific implementation plan for the angle adjustment mechanism, such as Figure 1 and 2 As shown, in some embodiments, the angle adjustment mechanism includes a first inclined groove 22 and a second inclined groove 23 disposed on the side wall of the mounting base 2. Locking bolts 24 are disposed in both the first inclined groove 22 and the second inclined groove 23, and one end of each locking bolt 24 is threadedly connected to the mounting plate 21. Specifically, a rivet nut is disposed on the mounting plate 21, and the locking bolt 24 can be locked onto the rivet nut. Loosening the locking bolt 24 allows the angle between the housing 1 and the connecting plate to be adjusted to a suitable position. During the adjustment process, the locking bolt 24 cooperates with the first inclined groove 22 and the second inclined groove 23 to provide guidance. After the position is adjusted, tightening the locking nut fixes the housing 1 and the connecting plate to the mounting base 2 at the adjusted angle.

[0043] The control method for the automatic switch car landing display device mentioned above includes installing the landing display device inside the car, so that the first window 14 and the second window 15 face the car door.

[0044] When the car door opens, the laser ranging module 3 detects that the distance to the obstruction in front is greater than a preset threshold and sends a signal to the main control unit 6. The main control unit 6 compares the detected distance signal with the threshold. If the main control unit 6 determines that it is an open environment, it sends a control signal to the switching mechanism 5. The actuator 51 drives the baffle 52 to cover the second window 15. The threshold can be set according to the size of the car, such as 1.5m.

[0045] After the car door closes, the car door forms a close-range obstruction to the laser ranging module 3. The laser ranging module 3 sends a signal to the main control unit 6. The main control unit 6 compares the detected distance signal with the threshold. The main control unit 6 determines that the door is closed. The active unit sends a control signal to the switching mechanism 5. The actuator 51 drives the baffle 52 to expose the second window 15.

[0046] In other embodiments, the main control unit 6 is also connected to the power supply or control circuit of the projection device 4. When the main control unit 6 determines that the environment is open, it sends a control signal to the projection device 4 to cut off the power or put it into sleep mode, causing the projection device 4 to stop projection output. When it determines that the door is closed, it sends a control signal to the projection device 4 to turn on the power or wake it up, enabling the projection device 4 to output projection normally.

[0047] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this application.

Claims

1. An automatic switch car floor display device, characterized in that, include The housing (1) has a first window (14) and a second window (15) on one side, with the first window (14) and the second window (15) facing the car door. A laser ranging module (3) is installed inside the housing (1), and its detection end corresponds to the position of the first window (14) to detect the status of the car door; The projection device (4) is installed inside the housing (1), and its projection end projects onto the car door through the second window (15); The switching mechanism (5) is installed inside the housing (1) and includes an actuator (51) and a baffle (52) disposed at the output end of the actuator (51). The actuator (51) is configured to drive the baffle (52) to cover or expose the second window (15). The main control unit (6) receives the signal from the laser ranging module (3) and sends a control signal to the actuator (51) according to the signal from the laser ranging module (3). The actuator (51) drives the baffle (52) to cover or expose the second window (15) according to the control signal. Mounting base (2), mounting plate (21) is set on mounting base (2) by angle adjustment mechanism, and housing (1) is mounted on mounting plate (21).

2. The automatic switch car floor display device according to claim 1, characterized in that, The housing (1) includes two first panels (11) arranged opposite to each other, two second panels (12) arranged opposite to each other, and two third panels (13) arranged opposite to each other. The projection end of the projection device (4) is directly facing one of the first panels (11), and the mounting plate (21) is connected to one of the second panels (12).

3. The automatic switch car floor display device according to claim 2, characterized in that, The first window (14) and the second window (15) are disposed on the first panel (11), and the projection end of the projection device (4) is directly opposite the second window (15).

4. The automatic switch car floor display device according to claim 3, characterized in that, The actuator (51) is fixedly installed on the first panel (11).

5. The automatic switch car floor display device according to claim 4, characterized in that, The actuator (51) is fixedly installed on the second panel (12) away from the mounting plate (21). The baffle (52) is a flexible baffle. The second panel (12) and the first panel (11) are provided with a connecting guide groove (16). The baffle (52) is slidably disposed in the guide groove (16).

6. The automatic switch car floor display device according to claim 5, characterized in that, The flexible baffle (52) includes multiple baffles arranged side by side, with adjacent baffles connected by hinges.

7. The automatic switch car floor display device according to claim 2, characterized in that, The first window (14) and the second window (15) are disposed on the second panel (12) away from the mounting plate (21). The projection direction of the projection end of the projection device (4) is perpendicular to the opening direction of the second window (15). A reflector (41) is also disposed inside the housing (1). The reflector (41) is located between the second window (15) and the projection end of the projection device (4).

8. The automatic switch car floor display device according to claim 7, characterized in that, The actuator (51) is mounted on the second panel (12) of the second window (15).

9. The automatic switch car floor display device according to any one of claims 1 to 8, characterized in that, The angle adjustment mechanism includes a first inclined groove (22) and a second inclined groove (23) provided on the side wall of the mounting base (2). The first inclined groove (22) and the second inclined groove (23) are each provided with a locking bolt (24). One end of the locking bolt (24) is threadedly connected to the mounting plate (21).

10. The control method for the automatic switch car floor display device according to any one of claims 1 to 9, characterized in that, Install the floor display device inside the car so that the first window (14) and the second window (15) face the car door; If the car door is opened, the laser ranging module (3) detects that the distance to the front obstruction is greater than the preset threshold and sends a signal to the main control unit (6). The main control unit (6) determines that it is an open environment and sends a control signal to the switching mechanism (5). The actuator (51) drives the baffle (52) to cover the second window (15). After the car door is closed, the car door forms a close-range block to the laser ranging module (3). The laser ranging module (3) sends a signal to the main control unit (6). The main control unit (6) determines that the door is closed. The active unit sends a control signal to the switching mechanism (5). The actuator (51) drives the baffle (52) to expose the second window (15).

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