Redundant display device

Abstract

Provided is a redundant display device configured as a multi-layer structure formed by sequentially combining a plurality of layered structures, comprising: a touch panel and a substrate; the at least two display touch screens are combined to form a screen connecting structure and are arranged in the assembling space, an optical module and a control module are further arranged between the substrate and the display touch screens, the optical module comprises a display panel, a backlight assembly, an optical film, a glass assembly and an ambient light sensor, and the control module is connected with the display panel. The control module adjusts a backlight assembly, an optical film and a glass assembly in the optical module according to a sensing structure of the ambient light sensor, the two display touch screens are provided with independent control units and interfaces, and the display content and the display mode of the double screens can be configured, so that the two display touch screens are redundant to each other, and the display efficiency is improved. The stability of parameter display in the cabin under long-time operation of the display interaction equipment is improved, and then the operation safety of an aviation aircraft is improved.

Description

Technical Field

[0001] This invention relates to the field of special display technology, specifically to an airborne redundant display device. Background Technology

[0002] The statements in this section are provided only as background information relating to this disclosure and do not necessarily constitute prior art.

[0003] Due to their unique operating environment and long continuous display time, special display equipment faces increasingly stringent reliability requirements during operation. To address various unforeseen circumstances during operation, multiple corresponding emergency measures should be provided to ensure the normal operation of the equipment.

[0004] For example, in the cockpit of an aircraft, there are multiple display or interactive devices used to display parameters such as flight attitude, altitude, and speed. Parameters such as attitude and altitude are crucial to aircraft flight; therefore, these display or interactive devices operate for extended periods during commercial aircraft flights. Ensuring the stable display of these parameters has become a pressing technical problem to be solved in the field of special equipment. Summary of the Invention

[0005] In view of this, the present invention provides a redundant display device that at least solves one of the above-mentioned problems.

[0006] To address the above technical problems, the redundant display device provided by this invention is configured as a multi-layer structure formed by sequentially combining multiple layered structures, including: a touch panel and a substrate, wherein the touch panel is a frame component and is joined with the substrate to form an embedded assembly space; at least two display touch screens, which are combined to form a connected screen structure and placed within the assembly space, wherein an optical module and a control module are further included between the substrate and the display touch screens, the optical module including a display panel, a backlight assembly, an optical film, a glass assembly, and an ambient light sensor, and the control module adjusting the backlight assembly, optical film, and glass assembly in the optical module according to the sensing structure of the ambient light sensor to change the display brightness of the display touch screen.

[0007] In a preferred embodiment of the present invention, a plurality of control units are arranged on both sides of the frame of the touch panel. In the assembled state, the plurality of control units are configured to be symmetrically distributed on the bottom and one side of the display touch screen.

[0008] In a preferred embodiment of the present invention, the control unit on the touch panel is a control button and / or knob with an adjustment structure.

[0009] In a preferred embodiment of the present invention, the control module includes a power conversion unit, a video processing unit, and a communication unit, wherein the communication unit implements RS422 level conversion and CAN level conversion functions.

[0010] In a preferred embodiment of the present invention, the video processing unit uses an XC7A35T-2FGG484IFPGA as the video processing device, and the control unit uses an STM32F407ZGT7 as the core control device.

[0011] In a preferred embodiment of the present invention, each of the display touch screens includes two video input interfaces and two data communication interfaces.

[0012] By implementing different preferred embodiments of the present invention, dual redundant displays for special equipment, especially airborne displays for civil aircraft, are realized. These displays have a more compact structure and a higher degree of equipment integration. In addition to meeting the assembly requirements in more confined spaces, the display content and display mode of the two screens can be configured to achieve redundancy between the two display touch screens. This improves the stability of cabin parameter display during long-term operation of the display interaction device, thereby improving the operational safety of the aircraft. Attached Figure Description

[0013] Figure 1 The diagram shows the exploded structure of a redundant display device in a preferred embodiment of the present invention. Detailed Implementation

[0014] In view of the aforementioned known technical problems, existing technologies have made various attempts, such as using redundant power supplies to ensure normal power supply operation. A redundant power supply is a load balancing mechanism that uses a chip to control multiple identical power supplies. When one or more of the power supplies fail, a normally functioning power supply takes over the load. However, it should be understood that redundant power supplies can only address power supply failures; they cannot resolve systemic failures of the display or interactive device itself.

[0015] Regarding the aforementioned potential motherboard failures, current technology often only addresses the issue by replacing the display device. However, replacing the device is ill-suited for handling sudden display or interactive device malfunctions during flight. Furthermore, the replacement process is cumbersome and costly, thus negating its purpose as an emergency solution. It should also be noted that placing backup equipment further restricts the limited space in the aircraft cabin. In particular, with the development of the low-altitude economy, the cockpit layout of small civilian aircraft is becoming more compact, making it impossible to arrange display and interactive devices in the traditional passenger aircraft configuration. Therefore, the approach of replacing the display device only after it fails is even less applicable.

[0016] On the other hand, modern cockpits utilize integrated display and interaction devices, meaning that in addition to display functionality, these devices also possess controllable interactive functions, such as touchscreens with integrated display capabilities. Unlike ordinary display devices, touchscreens involve processing units to implement touch commands and sensors for touch functionality, making them more prone to malfunctions and more difficult to replace and reconfigure during flight. This is especially true for configuring physical shortcut buttons used in multi-screen or interconnected display solutions, which are more complex. Therefore, this new device architecture demands improved touchscreen stability while ensuring the stability of the display function.

[0017] Embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in this specification, the drawings are not drawn to scale, and the same reference numerals denote the same parts.

[0018] It should be noted that the terms "first" and "second" used in the embodiments of the present invention are used to distinguish between two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the invention. Subsequent embodiments will not explain this in detail.

[0019] Figure 1 The exploded view illustrates the exploded structure of a redundant display device in a preferred embodiment of the present invention. As shown in the figure, in this preferred embodiment, the redundant display device 100 is a single integrated structure formed by splicing two display touchscreens 200 together. Each display touchscreen 200 includes a display screen 201, a touch panel 202, touch buttons 203, and an independent interface.

[0020] Specifically, please refer to... Figure 1In this embodiment, the total redundant display device 100 has a multi-layer structure. An assembly direction is defined from the external touch surface of the device to the internal control unit. A touch panel 202 is provided at the outermost edge of this assembly direction. The touch panel 202 is spliced ​​with the bottommost structural component of the assembly direction to form a frame structure that allows for the embedded installation of the display touch screen 200. Multiple touch buttons 203 are distributed along the frame of the touch panel 202. These touch buttons 203 are symmetrically and evenly arranged on both sides of the frame of the touch panel 202. For example, in this embodiment, the twelve touch buttons 203 corresponding to each display touch screen 200 are distributed along the frame of the touch panel 202 at the bottom and one side of the display touch screen 200. Furthermore, in the assembly, the touch panel 202 and the touch buttons 203 on it are also symmetrically distributed with equal spacing. Thus, the two embedded display touch screens 200 form a unified screen through the touch panel 202, while also achieving independent control through the touch buttons 203 on the touch panel 202. The data acquisition results of the twenty-four touch buttons 203 on the two touch screens 200 are all transmitted to external devices via ARINC825.

[0021] Regarding power supply, to ensure the stability of long-term operation of the equipment, each display touch screen 200 can be equipped with an independent power supply to achieve power on / off control for a single screen. In other scenarios, to further limit product specifications, two display touch screens 200 can share a single power supply. For the former configuration, when the power supply fails but the display is normal, a redundant backup solution for the power supply is provided. For the latter configuration, when the display device fails, a redundancy solution for the display touch device is achieved by switching the power supply. Those skilled in the art can flexibly choose the above configuration methods according to the actual configuration scenario. For example, the above methods can also be combined to achieve dual-path switching between the display touch device and the power supply.

[0022] Each control button on the touchscreen 200 can be used to control functions such as turning the touch function on and off. In different preferred embodiments of the present invention, the functions of the touch buttons 203 can also be set according to the configuration of the touchscreen 200. For example, the brightness of the touchscreen 200 can be adjusted by the touch buttons 203. The touch buttons 203 can be physical buttons or other structures with adjustment functions, such as knobs. Furthermore, the adjustment function of the touch buttons 203 can also cooperate with other devices to achieve adaptive control. For example, an ambient light sensor can be configured to cooperate with the brightness adjustment control button. The ambient light sensor senses the intensity of light in the external environment to adaptively adjust the brightness of the touchscreen 200. This function is beneficial in scenarios with rapid changes in light intensity. Alternatively, it can avoid the problem of inconvenient observation caused by reflections on the touchscreen 200 in scenarios with frequent light shading.

[0023] Continue reading Figure 1 Below the touchscreen 200, stacked on top of it, is the LCD optical module 300. The LCD optical module 300 includes a liquid crystal display panel, a backlight assembly, optical films, and glass assemblies. Multiple layered components are sequentially combined to form the optical module. Below the LCD optical module 300 is the display control module 400, which controls the backlight assembly and other components in the LCD optical module through duty cycle signals (PWM signals) and enable control signals.

[0024] In this preferred embodiment of the present invention, the display control module 400 in each display touch screen 200 is also independent. Thus, as mentioned above, two independent display units are formed. The two display touch screens 200 can display the same or different content as needed, or they can form two sets of synchronously or distributed display units, so that when one display unit malfunctions, the other display unit takes over. It should be noted that the present invention does not limit the display mode and / or operating mode of the two independent display units. This is because, in specific configurations, for the two independent display touch screens 200 forming a dual-screen setup, the display control module 400 can configure the display content of both in various ways as needed. For example, the two display touch screens 200 can display a single image unfolded along its length, or the two display touch screens 200 can alternately display specific content, etc.

[0025] The display control module 400 includes a power conversion unit, a video processing unit, and a communication unit. The power conversion unit converts the power supply from the display to the power required by the display control module. The video processing unit performs video interface conversion, video source selection, and image freeze detection. The communication unit performs RS422 level conversion and CAN level conversion. In this preferred embodiment, the video processing unit uses an XC7A35T-2FGG484I FPGA as the video processing device, and the control unit uses an STM32F407ZGT7 as the core control device. Notably, in this embodiment, the data input interfaces of each display touchscreen 200 are redundantly designed; specifically, each display touchscreen 200 includes two video input interfaces, two ARINC825 data communication interfaces, and two RS422 data communication interfaces.

[0026] By implementing different preferred embodiments of the present invention, dual redundant displays for special equipment, especially airborne displays for civil aircraft, are realized. These displays have a more compact structure and a higher degree of equipment integration. In addition to meeting the assembly requirements in more confined spaces, the display content and display mode of the two screens can be configured to achieve redundancy between the two display touch screens. This improves the stability of cabin parameter display during long-term operation of the display interaction device, thereby improving the operational safety of the aircraft.

[0027] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A redundant display device, characterized in that, The redundant display device is configured as a multi-layered structure formed by sequentially combining multiple layered structures, including: The touch panel is a frame component and is joined to the base to form an embedded assembly space. At least two display touch screens are combined to form a connected screen structure and placed within the assembly space. An optical module and a control module are also included between the substrate and the display touch screens. The optical module includes a display panel, a backlight assembly, an optical film, a glass assembly, and an ambient light sensor. The control module adjusts the backlight assembly, optical film, and glass assembly in the optical module according to the sensing structure of the ambient light sensor to change the display brightness of the display touch screen.

2. The redundant display device according to claim 1, characterized in that, On the touch panel, multiple control units are arranged along both sides of its frame. In the assembled state, the multiple control units are configured to be symmetrically distributed at the bottom and one side of the display touch screen.

3. The redundant display device according to claim 2, characterized in that, The control section on the touch panel consists of control buttons and / or knobs with adjustable structures.

4. The redundant display device according to claim 3, characterized in that, The control module includes a power conversion unit, a video processing unit, and a communication unit. The communication unit implements RS422 level conversion and CAN level conversion functions.

5. The redundant display device according to claim 4, characterized in that, The video processing unit uses an XC7A35T-2FGG484I FPGA as the video processing device, and the control unit uses an STM32F407ZGT7 as the core control device.

6. The redundant display device according to claim 3, characterized in that, Each of the aforementioned display touch screens includes two video input interfaces and two data communication interfaces.

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