An on-board data acquisition recorder

Abstract

The application provides an airborne data acquisition recorder, and belongs to the technical field of airborne electronic equipment. The recorder comprises a backboard module, a power module, a main control module, a recording module and at least one functional module which are stacked and installed on the backboard module through locking mechanisms; the backboard module is provided with standardized electrical interfaces and mechanical guide structures; each module has a shielding cavity formed by an independent metal shell, and the modules are connected through the locking mechanisms and kept apart to maintain good heat dissipation. The recorder has the advantages of convenient maintenance, good electromagnetic compatibility, strong anti-impact and anti-vibration capability and flexible expansion.

Description

Technical Field

[0001] This utility model relates to the field of airborne electronic equipment technology, and in particular to an airborne data acquisition and recording device that is modularly stacked, suitable for complex airborne environments, and has high reliability and easy maintenance. Background Technology

[0002] In the aviation field, airborne data acquisition and recording devices are key equipment for ensuring flight safety and acquiring flight data. Their performance directly affects the accuracy of data acquisition and the stability of equipment operation.

[0003] Existing airborne data acquisition and recording devices mostly adopt an integrated chassis structure, with functional boards integrated into the chassis via plug-in or embedded methods. This structure has the following drawbacks: 1) Poor maintainability; failure of a single functional module requires disassembling the entire device, which is cumbersome; 2) Significant challenges in electromagnetic compatibility (EMC) design, with severe internal interference; 3) Insufficient resistance to shock and vibration due to the rigid overall connection, making it prone to failure in harsh airborne environments; 4) Poor expandability and configuration flexibility, making it difficult to adapt to the diverse needs of different missions. Therefore, a new structure is urgently needed to solve the above problems. Utility Model Content

[0004] In view of the aforementioned problems and in response to the shortcomings of the prior art, this utility model provides an airborne data acquisition recorder, which aims to improve the equipment's ease of maintenance, electromagnetic compatibility, shock and vibration resistance, and functional expandability.

[0005] In some embodiments of this application, an airborne data acquisition recorder is disclosed, comprising:

[0006] Backplane module;

[0007] The power module, main control module, and recording module, as well as at least one functional module for data acquisition, are stacked and mounted on the backplate module via a locking mechanism.

[0008] The backplane module is equipped with standardized electrical interfaces and mechanical guiding structures;

[0009] Each module has an independent shielded cavity formed by a metal shell. The modules are mechanically connected through the locking mechanism and electrically connected to each other through an electrical interface, while maintaining a certain gap between each module.

[0010] Optionally, the locking mechanism includes a long screw that extends laterally through the recording module, the main control module, and the functional module to the power module; and

[0011] Short screws that pass through the backplate module and connect to the bottom of each module.

[0012] Optionally, the functional module includes a data acquisition module, a communication module, and a pulse modulation module;

[0013] A power module, a data acquisition module, a communication module, a pulse modulation module, a main control module, and a recording module are stacked sequentially on the backplane module.

[0014] Optionally, the mechanical guide structure includes: an adapter slot located on the backplate module and respectively matching each module;

[0015] Each of the adapter slots is provided with at least one positioning post and / or positioning hole.

[0016] Optionally, the metal casing of each module is provided with heat dissipation fins on its sides and heat dissipation grooves on its front and back sides.

[0017] Optionally, the metal casing may also have an inwardly recessed groove in the middle of the front or back side.

[0018] A thermally conductive silicone pad is provided in the groove between adjacent modules.

[0019] Optionally, the metal casing is made of magnesium alloy.

[0020] Optionally, the opposite side of the backplate module is connected to mounting feet by short screws;

[0021] The side projection of the mounting foot is L-shaped.

[0022] Optionally, the upper end of the mounting foot is triangular in the frontal projection;

[0023] The triangular mounting feet extend to the bottom of the module's metal housing and are connected to the bottom of the metal housing by short screws.

[0024] Optionally, the bottom surface of the mounting foot is provided with an end-open mounting hole.

[0025] This application has the following advantages:

[0026] In the embodiments of this application, a backplane module is used; a power module, a main control module, and a recording module, as well as at least one functional module for data acquisition, are stacked and mounted on the backplane module via a locking mechanism; the backplane module has standardized electrical interfaces and mechanical guiding structures; each module has an independent shielded cavity formed by a metal shell, and the modules are mechanically connected through the locking mechanism and electrically connected to each other through the electrical interfaces, while maintaining a certain gap between the modules. Through modular stacking design, each functional module is independently separable, supports hot-swapping, and greatly improves maintenance efficiency and configuration flexibility; through independent metal cavities, each module has an independent electromagnetic shielding shell, effectively suppressing internal and external interference. The standardized backplane interface and module size allow users to flexibly add, delete, or replace functional modules (such as video acquisition, data storage, communication transmission, etc.) according to task requirements, resulting in strong versatility. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of an airborne data acquisition recorder provided in one embodiment of this application;

[0029] Figure 2 This is an exploded structural diagram of an airborne data acquisition recorder provided in one embodiment of this application.

[0030] In the attached diagram, 1 is the power module; 7 is the backplane module; 2 is the acquisition module; 3 is the communication module; 4 is the pulse modulation module; 5 is the main control module; 6 is the recording module; 7 is the backplane module; 71 is the adapter slot; and 72 is the positioning post. Detailed Implementation

[0031] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] Reference Figures 1 to 2This illustration shows an airborne data acquisition recorder provided in an embodiment of this application, comprising: a backplane module 7; a power module 1, a main control module 5, and a recording module 6 stacked on the backplane module 7 via a locking mechanism; and at least one functional module for acquiring audio / video data; the backplane module 7 is provided with a standardized electrical interface and a mechanical guiding structure; each module has an independent shielded cavity formed by a metal shell, the modules are mechanically connected through the locking mechanism, and electrically connected to each other through the electrical interface, and a certain gap is maintained between the modules.

[0033] By stacking and installing the functional modules and backplane modules, with each module independently configured, maintenance convenience is greatly improved when a single module fails, as the entire device does not need to be disassembled; the faulty module can simply be removed using the locking mechanism. The independent metal casings of each module form shielded cavities, preventing mutual interference between modules, reducing the risk of electromagnetic interference, effectively minimizing inter-module electromagnetic interference, and improving electromagnetic compatibility. The combination of a transverse connection structure and the longitudinal connection of backplane module 7 makes the device more robust than a single fixed connection method, enhancing its shock and vibration resistance and adapting to harsh airborne environments. Standardized electrical interfaces and mechanical guiding structures facilitate the addition, removal, or replacement of functional modules according to different task requirements, improving expandability and configuration flexibility.

[0034] Furthermore, the locking mechanism includes a long screw that extends laterally through the recording module 6, the main control module 5, and the function module to the power module 1; and a short screw that extends through the backplate module 7 and connects to the bottom of each module respectively.

[0035] Understandably, the locking mechanism uses a combination of long and short screws. The long screws run laterally through each module, while the short screws connect the backplate module to the bottom of each module. This double fixing ensures the stability of the stacked module connection and prevents the modules from loosening under flight vibration. This further ensures the reliability of the connection.

[0036] It should be noted that the specific lengths of the long and short screws mentioned above are determined according to the actual equipment requirements. The names are only used to distinguish that they are screws of different lengths. Furthermore, as screws are commonly used connecting tools, their specific structural parameters will not be detailed here.

[0037] The functional modules include a data acquisition module 2, a communication module 3, and a pulse modulation module 4. These modules are stacked sequentially on the backplane module 7: a power supply module 1, a data acquisition module 2, a communication module 3, a pulse modulation module 4, a main control module 5, and a recording module 6. The order of these functional modules is determined by the internal definition of the backplane module 7. Specifically, the data acquisition module 2 is used to collect video signals; the communication module 3 is used to integrate data, establish connection relationships with the main unit, and encode the data; and the pulse modulation module 4 is used for basic audio encoding. The specific types and stacking order of these functional modules make the device structure clearer, with each module having a distinct function, facilitating production assembly and subsequent maintenance, while ensuring a smooth data acquisition, processing, and recording process. Furthermore, different functional modules can be configured according to different usage scenarios to adapt to various functionalities, improving the device's versatility. The functional modules can be flexibly configured according to actual usage requirements.

[0038] It should be noted that, in addition to collecting audio and video data, the above functional modules can also be used to collect data from networks, analog signals, and digital signals. For example, during flight, an aircraft needs to communicate with ground radar stations or communication towers. These communication data can be collected and recorded using the aforementioned functional modules for post-flight analysis to determine if the aircraft's communication was functioning correctly. Analog and digital signals, as common data types, can be collected and recorded, allowing for comprehensive recording of various types of aircraft data.

[0039] The mechanical guiding structure includes: an adapter slot 71 located on the backplate module 7 and respectively matching each module; each adapter slot 71 is provided with at least one positioning post 72 and / or positioning hole. The adapter slots 71, positioning posts 72, and / or positioning holes of the above-mentioned mechanical guiding structure can quickly achieve precise positioning and installation of each module with the backplate module, improving assembly efficiency and ensuring the accuracy of the module's position after installation, avoiding the impact of installation deviations on electrical connections and equipment performance. The positioning post 72 located in the adapter slot 71 can be adapted to the hole of the corresponding module; similarly, the positioning hole can be adapted to the positioning post on the corresponding module to prevent positional displacement.

[0040] Each module's metal casing has heat dissipation fins on its sides and longitudinal heat dissipation grooves on its front and back, further improving heat dissipation efficiency. The heat dissipation fins and grooves on the metal casing increase the heat dissipation area and accelerate heat dissipation. Combined with thermally conductive silicone pads between adjacent modules, this efficiently transfers the heat generated by the modules during operation, preventing module damage due to overheating and ensuring stable long-term operation of the equipment. The center of the front or back of the metal casing also has an inwardly recessed groove; thermally conductive silicone pads are placed in this groove between adjacent modules. The groove in the center of the front or back of the metal casing is used to place the thermally conductive silicone pads, positioning them and preventing displacement during equipment operation, ensuring stable heat conduction. For example, the video signals acquired by the aforementioned video acquisition device are high-frequency signals. High-frequency signal processing generates more heat than low-frequency signal processing, or modules with higher power generate more heat than those with lower power. The above structure further balances heat dissipation.

[0041] The metal casing is made of magnesium alloy. The magnesium alloy casing, while ensuring strength and shielding performance, reduces the overall weight of the equipment, meeting the requirements for lightweight airborne equipment and reducing aircraft load.

[0042] Furthermore, the backplate module 7 has mounting feet connected to its opposite sides via short screws; the side projection of the mounting feet is L-shaped. The L-shaped mounting feet facilitate the connection of the backplate module to other structures of the equipment or related aircraft components, and the short screw connection makes installation and disassembly convenient. Simultaneously, the L-shaped structure enhances stability after installation.

[0043] The upper end of the front projection of the mounting foot is triangular; as shown Figure 1 and 2 As shown, the triangular mounting feet extend to the bottom of the module's metal casing and are connected to the bottom of the metal casing via short screws. The upper end of the triangular mounting feet extends and secures the module to the bottom of the metal casing, further supporting and fixing it, improving the module's stability after installation, distributing the pressure of the module on the backplane module, and extending the equipment's service life.

[0044] The bottom surface of the mounting foot is provided with an open mounting hole at the end. The open mounting hole at the end of the bottom surface of the mounting foot allows for fine adjustment according to the actual installation position during installation, reducing the installation accuracy requirements, improving the ease of installation, and facilitating the disassembly and maintenance of the equipment later.

[0045] As an example, such as Figure 1 and Figure 2As shown, an airborne data acquisition recorder includes a backplate module 7. The opposite sides of the backplate module 7 are connected to mounting feet by short screws. The side projection of the mounting feet is L-shaped, and the upper end of the front projection is triangular. The upper end of the triangular mounting feet extends to the lower part of the metal shell of the module and is connected to the lower part of the metal shell by short screws. The bottom surface of the mounting feet is provided with an open mounting waist hole to facilitate the connection of the device with the aircraft mounting bracket and the fine adjustment of its position.

[0046] The backplate module 7 is equipped with standardized electrical interfaces and mechanical guide structures. The mechanical guide structure includes adapter slots 71 that match each module. Each adapter slot 71 has two positioning posts 72 (positioning holes or a combination of positioning posts and positioning holes can also be set as needed) to facilitate precise installation of each module.

[0047] The power module 1, acquisition module 2, communication module 3, pulse modulation module 4, main control module 5, and recording module 6 are stacked on the back panel module 7 via a locking mechanism. Among them, acquisition module 2, communication module 3, and pulse modulation module 4 are functional modules used to acquire audio / video data. This stacking order ensures that the power module 1 supplies power to each module. After the acquisition module 2, communication module 3, and pulse modulation module 4 acquire data, they are transmitted to the main control module 5 for processing, and then recorded by the recording module 6, so that the data flow is smooth.

[0048] The locking mechanism includes a long screw that runs horizontally through the recording module 6, main control module 5, pulse modulation module 4, communication module 3, acquisition module 2 to power module 1, and a short screw that runs through the back panel module 7 and connects to the bottom of each module. This double fixing ensures that the connection of each module is stable and prevents loosening due to vibration.

[0049] Each module has an independent metal casing made of magnesium alloy, forming a shielded cavity to reduce electromagnetic interference, and the magnesium alloy material is lightweight. The metal casing has heat dissipation fins on the sides, and longitudinal heat dissipation grooves on the front and back to increase the heat dissipation area; the front of the metal casing has an inwardly recessed groove in the center, and thermally conductive silicone pads are placed in the groove between adjacent modules to ensure efficient heat transfer and dissipation and prevent the modules from overheating.

[0050] Conductive shielding pads and thermally conductive silicone pads are installed between the interfaces of adjacent modules. The conductive shielding pads further enhance the electromagnetic shielding effect, while the thermally conductive silicone pads assist in heat dissipation. An integral shockproof frame is fitted around the stacked modules. The shockproof frame is connected to the aircraft mounting bracket through rubber shock absorbers, improving the equipment's shock and vibration resistance and adapting it to harsh airborne environments.

[0051] When using this airborne data acquisition recorder, if additional functional modules are needed according to flight mission requirements, the standardized electrical interface and mechanical guide structure of the backplate module 7 can be used to install the modules through the locking mechanism; if a module fails, the faulty module can be replaced simply by removing the corresponding long screw and short screw, making maintenance convenient.

[0052] In some embodiments of this application, the airborne data acquisition recorder provided by this utility model is based on a modular stacked structure. A backplane module 7 serves as the base, on which standard electrical interfaces (such as PCIe, VPX, etc.) are provided. A power supply module 1, a main control module 5, a recording module 6, and one or more functional modules (such as a video acquisition module) are stacked sequentially on top of it.

[0053] Each module has an independent aluminum or magnesium alloy cavity, with the interior coated with conductive paint. The modules are mechanically connected by screws and electrically connected through standardized electrical interfaces provided by the backplane module 7.

[0054] Alternatively, the entire stacked module can be housed in a single, magnesium alloy shock-absorbing frame (not shown in the diagram) externally, with a polyurethane cushioning layer on the inside of the frame. The shock-absorbing frame is ultimately secured to the airborne equipment bay by four rubber shock absorbers, thus isolating the aircraft from severe vibrations and impacts. The metal shell contacts the shock-absorbing frame or is softly connected via thermal silicone pads to ensure heat dissipation. When a functional module needs replacement, it can be slid out and replaced simply by manually opening the corresponding locking mechanism, without disassembling the entire device or using tools, making maintenance extremely convenient.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0056] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0057] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0058] The above provides a detailed description of an airborne data acquisition recorder provided in this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An airborne data acquisition recorder, characterized in that, include: Backplane module; The power module, main control module, and recording module, as well as at least one functional module for data acquisition, are stacked and mounted on the backplate module via a locking mechanism. The backplane module is equipped with standardized electrical interfaces and mechanical guiding structures; Each module has an independent shielded cavity formed by a metal shell. The modules are mechanically connected through the locking mechanism and electrically connected to each other through an electrical interface, while maintaining a certain gap between each module.

2. The airborne data acquisition recorder according to claim 1, characterized in that, The locking mechanism includes a long screw that runs horizontally through the recording module, the main control module, and the function module to the power module; and a short screw that runs through the backplate module and connects to the bottom of each module.

3. The airborne data acquisition recorder according to claim 2, characterized in that, The functional modules include an acquisition module, a communication module, and a pulse modulation module; A power module, a data acquisition module, a communication module, a pulse modulation module, a main control module, and a recording module are stacked sequentially on the backplane module.

4. The airborne data acquisition recorder according to claim 2, characterized in that, The mechanical guide structure includes: an adapter slot located on the back plate module and respectively matching each module; Each of the adapter slots is provided with at least one positioning post and / or positioning hole.

5. The airborne data acquisition recorder according to claim 1, characterized in that, Each module's metal casing has heat dissipation fins on its sides and heat dissipation grooves on its front and back.

6. The airborne data acquisition recorder according to claim 5, characterized in that, The metal casing also has an inwardly recessed groove in the middle of the front or back side. A thermally conductive silicone pad is provided in the groove between adjacent modules.

7. The airborne data acquisition recorder according to claim 1, characterized in that, The metal casing is made of aluminum alloy or magnesium alloy.

8. The airborne data acquisition recorder according to claim 1, characterized in that, The opposite sides of the backplate module are connected to mounting feet by short screws; The side projection of the mounting foot is L-shaped.

9. The airborne data acquisition recorder according to claim 8, characterized in that, The front projection of the mounting foot shows that its upper end is triangular; The triangular mounting feet extend to the bottom of the module's metal housing and are connected to the bottom of the metal housing by short screws.

10. The airborne data acquisition recorder according to claim 9, characterized in that, The bottom surface of the mounting foot is provided with an open mounting hole at the end.

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