A flight recorder

Abstract

The present invention provides a flight recorder, comprising a flight recorder body and a shell, wherein the shell is provided with an inner cavity, and the flight recorder body is provided in the inner cavity. The flight recorder also comprises at least one external filament antenna, wherein the at least one external filament antenna is wound around the outside of the shell, at least one end of each external filament antenna can be electrically connected to the flight recorder body, and each external filament antenna is provided with a weak portion that can be disconnected, and when the weak portion is disconnected, the disconnected end of the weak portion of the external filament antenna can move in a direction away from the shell. The beneficial effects of the present invention: it can effectively improve the signal receiving and transmitting strength, reduce the difficulty of searching for the flight recorder after an accident, and especially improve the probability of recovering the flight recorder after it falls into a rainforest, Gobi or desert and is buried.

Description

Technical Field

[0001] The present invention relates to the technical field of recorders, and in particular to a flight recorder. Background Art

[0002] The flight recorder on the plane contains circuit boards, recording tapes, memory chips and other precision equipment, which record various data during the flight, especially the flight parameters when the accident occurred. The flight recorder is usually installed in the safest part of the tail of the plane, which is the part that is least likely to be damaged in the event of an accident. The flight recorder is equipped with an antenna. When the plane crashes, the antenna on the flight recorder transmits a signal to communicate with the satellite, allowing the satellite to locate the flight recorder.

[0003] However, the outer structure of current flight recorders is just a rigid box. When a flight recorder sinks into a swamp or mud, it is completely buried and difficult to send or receive signals, which reduces the chance of recovery if it falls into a rainforest, Gobi Desert or desert. Summary of the invention

[0004] In view of this, the embodiments of this specification provide a flight recorder to reduce the difficulty of searching.

[0005] The embodiments of this specification provide the following technical solutions: A flight recorder, comprising: a flight recorder body and a shell, the shell being provided with an inner cavity, and the flight recorder body being provided in the inner cavity. The flight recorder also comprises at least one external wire antenna, at least one external wire antenna being wound around the outside of the shell, at least one end of each external wire antenna being electrically connected to the flight recorder body, each external wire antenna being provided with a disconnectable weak portion, and when the weak portion is disconnected, the disconnected end of the weak portion of the external wire antenna being able to move in a direction away from the shell.

[0006] Furthermore, the external wire antenna is made of a ductile memory alloy.

[0007] Furthermore, the weak portion is subjected to local embrittlement treatment.

[0008] Furthermore, the weak portion is reduced in diameter, and the cross-sectional area of ​​the reduced-diameter portion is smaller than the cross-sectional area of ​​other portions.

[0009] Furthermore, the external wire antenna is made of a flexible conductive material combined with an elastic frame.

[0010] Furthermore, the external wire antenna, the flexible conductive material is graphene or carbon fiber.

[0011] Furthermore, the cross-sectional shape of the external wire antenna is polygonal or elliptical.

[0012] Furthermore, at least one end of each external wire antenna is connected to the flight recorder body through an external antenna connector.

[0013] Furthermore, the external antenna connector is connected to the flight recorder body by brazing.

[0014] Furthermore, the external antenna connector is connected to the flight recorder body by gluing.

[0015] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification include at least the following: when the flight recorder falls, the strong impact force causes the external filament antenna to unfold, forming a long filament tail, which can effectively improve the signal reception and transmission strength. When the flight recorder falls into swamps and mud, the extended filament tail can reduce the risk of the flight recorder being completely buried, and play a role in continuing to receive and transmit signals. At the same time, this embodiment can also reduce the difficulty of searching for flight recorders after an accident, especially increasing the chance of retrieval when they fall into rainforests, Gobi deserts, and deserts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a cross-sectional schematic diagram of the flight recorder of this embodiment;

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the flight recorder of this embodiment;

[0019] Figure 3 is a schematic diagram of the weak part of the flight recorder of this embodiment;

[0020] Figure 4 Schematic diagram of the position of the weak part of the external wire antenna in the embodiment of the present invention;

[0021] Figure 5 FIG. 1 is a schematic diagram showing the position of the weak portion of the external wire antenna in the second embodiment of the present invention.

[0022] Explanation of the reference numerals: 1. Flight recorder body; 2. Shell; 3. External wire antenna; 4. External antenna connector; 5. Weak part. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0024] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0025] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0027] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects described may be practiced without these specific details.

[0028] When an airplane accident occurs, the flight recorder will detach from the airplane. The outer structure of a traditional flight recorder is just a rigid box with an antenna built into the box. When the flight recorder sinks into a swamp or mud, there is no antenna extending from the outside, making it difficult to detect the rescue signal.

[0029] like Figures 1 to 3As shown, an embodiment of the present invention provides a flight recorder, including a flight recorder body 1 and a shell 2, wherein the shell 2 is provided with an inner cavity, and the flight recorder body 1 is arranged in the inner cavity. The flight recorder also includes at least one external wire antenna 3, which is wound around the outside of the shell 2, and at least one end of each external wire antenna 3 can be electrically connected to the flight recorder body 1.

[0030] The outer wall of the outermost shell of the shell 2 is wound with an external wire antenna 3 made of a relatively long flexible, conductive and extensible memory alloy material. The external wire antenna 3 is connected to the antenna of the signal transceiver device of the flight recorder body 1. The external wire antenna 3 can also be made of a flexible conductive material combined with an elastic skeleton. The above-mentioned flexible conductive material is carbon fiber, graphene, etc. The external wire antenna 3 has good resilience and ductility. When a collision occurs, it can be transformed from a wound state to an unfolded state.

[0031] Preferably, the flexible conductive material in this embodiment is selected from carbon fiber or graphene. Carbon fiber is a high-strength and high-modulus fiber with a carbon content of more than 90%. It is the best in high temperature resistance among all chemical fibers. It is made of acrylic fiber and viscose fiber and is oxidized and carbonized at high temperature. Carbon fiber is an excellent material for manufacturing high-tech equipment such as aerospace. Using carbon fiber as the material of the antenna can meet the high temperature environment when falling and enhance the stability of the antenna.

[0032] As a new material, graphene has excellent electrical conductivity. Compared with metals, graphene has unique advantages, such as impedance matching and dynamic adjustable conductivity. Therefore, applying graphene, a new material, to antennas can bring considerable progress in reducing antenna size, achieving dynamic control of antenna radiation, and improving antenna performance.

[0033] Each external wire antenna 3 is provided with a disconnectable weak portion 5, which is locally embrittled or reduced in diameter. When a collision occurs, the base layer of the external wire antenna 3 (the portion of the external wire antenna 3 that has not been locally embrittled or reduced in diameter, especially the connection end of the external wire antenna 3 and the housing 2) is not allowed to break. The weak portion 5 will break due to the embrittlement or reduction in diameter. When the weak portion 5 is disconnected, the disconnected end of the weak portion 5 can move in a direction away from the housing 2, ensuring that the antenna functions normally. At the same time, the deployed external wire antenna 3 can increase the outer diameter of the housing 2, making it less likely for the housing 2 to sink into places that are difficult to find, such as mud or swamps.

[0034] The external wire antenna 3 should be in a diffused state when unfolded. In order to reduce the entanglement of the external wire antenna 3 after unfolding, the design needs to consider the anti-entanglement problem. For example, the cross-section of the external wire antenna 3 is designed to be a non-circular structure, including a triangle, a flat square, a star, an ellipse, etc. When the external wire antenna 3 adopts the above cross-sectional shape, the external wire antenna 3 is not easy to get tangled during the unfolding process, avoiding the accident of affecting the normal unfolding due to self-entanglement.

[0035] When a collision occurs, in order to maintain the antenna's signal transmission capability, the external wire antenna 3 is fixedly connected to the signal transceiver device inside the flight recorder through the external antenna connector 4, such as by brazing, gluing, etc. Of course, this embodiment is not limited to the above connection method. For example, in an embodiment not shown in the figure, the connection can also be made through a connection component. All embodiments that can firmly connect the external wire antenna 3 to the antenna of the signal transceiver device should be within the protection scope of this application.

[0036] The length and shape of the external wire antenna 3 after unfolding are controlled by reasonable setting of weak points. The internal signal transceiver of the flight recorder is matched with the external wire antenna 3. The transmission power is sufficient, the signal is easy to identify, and the signal can be smoothly transmitted through the external wire antenna 3.

[0037] like Figure 4 As shown, in the embodiment of the present invention, both ends of the external wire antenna 3 are fixedly connected to the housing 2, and the weak portion 5 is arranged in the middle of the external wire antenna 3. When encountering an external impact, the middle weak portion 5 breaks, and one external wire antenna 3 breaks into two, and the external wire antenna 3 stretches out. After the multiple external wire antennas 3 are broken and unfolded, the broken external wire antennas 3 are distributed in any direction of the housing 2, thereby increasing the radiation performance of the antenna.

[0038] like Figure 5 As shown, in the second embodiment of the present invention, one end of the external wire antenna 3 is fixedly connected to the housing 2, and the weak portion 5 is arranged at the other end connected to the housing 2. When encountering an external impact, the weak portion 5 breaks, and one end of the external wire antenna 3 is connected to the housing 2, and the other end of the external wire antenna 3 is extended and stretched. After unfolding, the external wire antenna 3 forms a wire tail with a certain length. After multiple external wire antennas 3 are broken and unfolded, there are broken external wire antennas 3 distributed in any direction, thereby increasing the radiation performance of the antenna. The longer wire tail makes it difficult for the flight recorder to sink completely into the rainforest, Gobi and desert.

[0039] In an embodiment of the present invention not shown in the figure, a mesh-shaped extensible memory alloy antenna is wound around the outside of the housing 2. The mesh-shaped extensible memory alloy antenna has at least one connection end fixedly connected to the housing 2. The outside of the mesh-shaped extensible memory alloy antenna is covered with a linear or shell-shaped shell containing a weak portion 5, so that the mesh-shaped extensible memory alloy antenna is tied to the housing 2. When encountering an external impact, the external linear or shell-shaped shell breaks, and the internal mesh-shaped extensible memory alloy antenna expands and unfolds into a mesh shape, thereby achieving the purpose of enhancing the strength of signal transmission.

[0040] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment described later, since it corresponds to the system, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0041] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A flight recorder, comprising: A flight recorder body (1) and a shell (2), wherein the shell (2) is provided with an inner cavity, and the flight recorder body (1) is arranged in the inner cavity, and is characterized in that the flight recorder also includes at least one external wire antenna (3), and the at least one external wire antenna (3) is wound around the outside of the shell (2), and at least one end of each external wire antenna (3) can be electrically connected to the flight recorder body (1), and each external wire antenna (3) is provided with a weak portion (5) that can be disconnected, and when the weak portion (5) is disconnected, the disconnected end of the weak portion (5) of the external wire antenna (3) can move in a direction away from the shell (2).

2. The flight recorder according to claim 1, characterized in that: The external wire antenna (3) is made of ductile memory alloy.

3. The flight recorder according to claim 1, characterized in that: The weak portion (5) is subjected to local embrittlement treatment.

4. The flight recorder according to claim 1, characterized in that: The weak portion (5) is reduced in diameter, and the cross-sectional area of ​​the reduced-diameter portion is smaller than the cross-sectional area of ​​other portions.

5. The flight recorder according to claim 1, characterized in that: The external wire-shaped antenna (3) is made of a flexible conductive material combined with an elastic frame.

6. The flight recorder according to claim 5, characterized in that: The flexible conductive material is graphene or carbon fiber.

7. The flight recorder according to claim 1, characterized in that: The cross-sectional shape of the external wire-shaped antenna (3) is polygonal or elliptical.

8. The flight recorder according to claim 1, characterized in that: The flight recorder also includes an external antenna connector (4), and at least one end of each external wire antenna (3) is connected to the flight recorder body (1) via the external antenna connector (4).

9. The flight recorder according to claim 8, characterized in that: The external antenna connector (4) is connected to the flight recorder body (1) by brazing.

10. The flight recorder according to claim 8, characterized in that: The external antenna connector (4) is connected to the flight recorder body (1) by gluing.

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