Flight parameter recorder

Abstract

The invention relates to the technical field of the aerospace industry, in particular to a flight parameter recorder, a card reader module is installed in a shell module, a video card module is inserted into one side of the card reader module, the card reader module comprises a card inserting assembly, a card reading assembly and a transmission and induction assembly, and the card reading assembly is connected with the video card module. A transmission and induction assembly is installed on the surface of the card insertion assembly. According to the invention, the complex processing technology of the flight parameter recorder is solved, and the defects of the existing technology in the aspects of efficiency, cost, precision, material utilization rate, environmental protection and the like are overcome; the complex technological process is simplified, the production efficiency is improved, the cost is reduced, the product quality is improved, and the increasingly complex and diversified requirements in the modern industrial field are better met; meanwhile, the functions of high-strength impact resistance, high-temperature resistance, fire resistance, water resistance, corrosion resistance and the like are achieved; and through the modular design, disassembly and data reading are convenient, wind resistance can be reduced, and the damage probability is reduced when the aircraft is disassembled.

Description

Technical Field

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

[0002] With the rapid and high-quality development of the aerospace industry, flight parameter recorders (FDRs) have gradually taken shape, driven by the demands for flight safety, the urgent need for aviation accident investigations, and technological advances in avionics and data storage. Early FDRs were primarily used to assist in accident investigations, but with the advancement of technology and various needs, the application of FDRs has gradually expanded, becoming an indispensable tool in modern aviation safety and operational management. The application of FDRs in aerospace is not limited to civil aircraft; they also play an equally important role in military aviation, spacecraft, drones, and other aerospace activities.

[0003] The core advantage of a flight data recorder (FDR) is its ability to record various flight parameters, such as speed, altitude, flight attitude, and engine performance, in real time during an aircraft or space mission. This data is crucial for flight safety, primarily in accident investigation and cause analysis, and in preventing potential flight risks. The real-time flight data provided by the FDR also plays a significant role in optimizing flight performance, helping to improve overall flight operations and aircraft systems during missions. The use of FDRs in aerospace helps meet the flight safety regulations of international aerospace governing bodies and ensures the standardized operations of aviation and space agencies. The data recorded by FDRs can be used in flight data reporting and regular audits, helping aviation and space agencies demonstrate compliance with flight safety regulations. This is not only a regulatory requirement but also crucial for ensuring flight reliability and safety standards.

[0004] During space missions, flight parameter recorders monitor the operating status of spacecraft during orbital flight, attitude adjustments, and propulsion, helping ground control personnel maintain real-time information about the spacecraft's operations. Flight parameter recorders are essential for complex space station missions or deep space exploration missions. After the mission is completed, the data recorded by the flight parameter recorders provides technical support for subsequent mission optimization. By reviewing the mission in detail, researchers can analyze each aspect of the mission, identify potential problems, and design improvement plans for future missions.

[0005] While flight recorders currently used in the aerospace industry offer significant advantages, existing flight data recording technology also has drawbacks and limitations. The industry primarily manufactures these recorders using casting or mold-forming processes. Existing recorders suffer from long manufacturing cycles and high costs, compatibility issues, and physical space limitations, along with hardware susceptibility to damage. Existing flight parameter recorders can be susceptible to damage during flight, including loss of recordings and potential safety hazards such as loss of position and disconnection. Summary of the Invention

[0006] The object of the present invention is to provide a flight parameter recorder to solve the problems of the original recorder mentioned in the above background technology, such as long production cycle, high cost, delayed capacitance problem, and easy recording disconnection.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a flight parameter recorder, comprising a housing module, a card reader module installed inside the housing module, and a video card module plugged into one side of the card reader module, the card reader module comprising a card insertion assembly, a card reader assembly, and a transmission and sensing assembly, the card insertion assembly and the card reader assembly being installed side by side inside the housing module, the transmission and sensing assembly being installed on a surface of the card insertion assembly, the transmission and sensing assembly being used to sense when the video card module is inserted; The card assembly includes a card holder and a guide positioning pin. The card holder is installed inside the housing module. The surface of the card holder is installed with a guide positioning pin, which is used to position the video card module after insertion. The transmission and sensing component includes a module sensing shaft, a top-opening optical couple sensor, a sensor fixing seat, a sensing baffle and a rotating optical couple sensor; the module sensing shaft is rotatably connected to the surface of the card holder, the sensor fixing seat is installed on the surface of the card holder, and the top-opening optical couple sensor is installed on the surface of the sensor fixing seat through bolts, and the top-opening optical couple sensor cooperates with the module sensing shaft to realize signal exchange, power transmission or data connection.

[0008] Preferably, the card reader assembly includes a power supply fixing plate, a card reader PCB and a cooling fan. The power supply fixing plate is arranged inside the shell module, and the card reader PCB is installed on the surface of the power supply fixing plate. Four cooling fans are arranged on the surface of the power supply fixing plate, and the cooling fans are used to dissipate heat for the power supply fixing plate and the card reader PCB.

[0009] Preferably, the housing module is formed by a lower cover plate, an upper cover plate and a front panel, and the lower cover plate and the upper cover plate are fixed to the card holder and the power supply fixing plate by screws, while the front panel is fixed to the card holder by screws.

[0010] Preferably, the video card module includes a video card housing to an acquisition sub-board PCB, and the interior of the video card housing is installed with an acquisition main board PCB, a video card receiving end, a video card transmitting end, a power control board PCB, a magnetic core and an acquisition sub-board PCB by screws.

[0011] Preferably, a positioning guide sleeve is installed on the surface of the video card shell by means of bolts, and one end of the positioning guide sleeve passes through the video card shell, and the video card shell is positioned by the mutual insertion of the guide positioning pin and the positioning guide sleeve when inserted into the card rack.

[0012] Preferably, module guide bars are installed on both the left and right sides of the video card housing through bolts, and the module guide bars are used for limiting the position of the video card housing when the plug-in card assembly is inserted.

[0013] Preferably, the interior of the card insertion assembly further includes a front baffle, and the front baffle is hinged to the surface of the card insertion rack via a shaft, and the front baffle is used to protect the interior of the housing module.

[0014] Preferably, guide grooves are provided on both sides of the inner wall of the card holder, and the guide grooves cooperate with the module guide bars to limit the position of the video card module when it is inserted into the card assembly; a POW data acquisition board is also installed on the surface of the card holder.

[0015] Preferably, a rotating optical coupler sensor is installed on the surface of the card holder, and the sensing baffle is hinged to the surface of the card holder through a sensing pin, and one side of the sensing baffle passes through the card holder and extends to the inside of the guide groove, and when the video card module is pushed into the card holder, the module guide bar will push open the sensing baffle, and after the sensing baffle is pushed open, the rotating optical coupler sensor is triggered.

[0016] Preferably, a knob handle is installed at one end of the module sensing shaft surface, and a spring retaining ring is mounted on the surface of the module sensing shaft, one end of the spring retaining ring contacts the card holder, and the other end contacts the surface of the module sensing shaft.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) Solve the complex processing technology of flight parameter recorders and overcome the shortcomings of existing processes in terms of efficiency, cost, precision, material utilization, and environmental protection. Through technological innovation, simplify complex process flows, improve production efficiency, reduce costs, and enhance product quality, thereby better responding to the increasingly complex and diverse needs of modern industry. (2) High-strength impact-resistant design: The aircraft uses a titanium alloy or stainless steel shell to withstand the severe impact of a crash (up to 3400g acceleration). The internal multi-layer shock-absorbing structure (such as honeycomb structure and foam cushioning material) effectively absorbs impact and protects the storage module; (3) High temperature resistant and fireproof structure: The outer layer of the recorder is wrapped with high temperature resistant insulation material and high temperature resistant alloy, which can continuously work for minutes at a high temperature of 1000°C to prevent data from being destroyed by flames; (4) Waterproof and corrosion-resistant: The fully sealed waterproof structure can be immersed in seawater for up to 30 days to ensure that data will not be damaged by water ingress; the outer shell is coated with an anti-corrosion coating to resist the effects of corrosive liquids such as seawater and aviation fuel; (5) Modular design, easy to maintain: independent storage units are used for easy repair and replacement; connectors and data interfaces comply with aviation standards, making disassembly and assembly and data reading easy; (6) Optimize aerodynamic structure: The structural design minimizes wind resistance to reduce the probability of damage when the aircraft disintegrates, and is not easily damaged and can be recovered after a crash. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional appearance structure of the present invention; Figure 2 This is a schematic diagram of the video card module of the present invention in a separated state; Figure 3 It is a schematic diagram of the internal enlarged structure of the present invention; Figure 4 This is a schematic diagram of a partial explosion front view of the present invention; Figure 5 This is a schematic diagram of the partial explosion rear view of the present invention; Figure 6 This is an exploded and enlarged schematic diagram of the card reader module of the present invention; Figure 7 This is an exploded and enlarged schematic diagram of the video card module of the present invention; Figure 8 It is an enlarged schematic diagram of the transmission and sensing components of the present invention.

[0019] In the figure: 1. Housing module; 11. Lower cover; 12. Upper cover; 13. Front panel; 2. Video card module; 21. Video card housing; 22. Module guide strip; 23. Acquisition main board PCB; 24. Video card receiving end; 25. Video card transmitting end; 26. Power control board PCB; 27. Magnetic core; 28. Positioning guide sleeve; 29. ​​Acquisition sub-board PCB; 3. Card reader module; 4. Card assembly; 41. Card holder; 42. Guide Positioning pin; 43, front baffle; 44, guide groove; 45, POW data acquisition board; 5, card reader assembly; 51, power supply fixing plate; 52, card reader PCB; 53, cooling fan; 6, transmission and sensing assembly; 61, module sensing shaft; 611, knob handle; 612, spring retaining ring; 62, top-opening optical coupler sensor; 63, sensor holder; 64, sensor baffle; 641, sensor pin; 65, rotary optical coupler sensor. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. In addition, the terms "first", "second", "third", "upper, lower, left, right", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] The structure of a flight parameter recorder provided by the present invention is as follows Figure 1 as well as Figure 3 As shown, it includes a shell module 1, which is formed by a lower cover plate 11, an upper cover plate 12 and a front panel 13, and the lower cover plate 11 and the upper cover plate 12 are fixed to the card holder 41 and the power supply fixing plate 51 by screws, and the front panel 13 is fixed to the card holder 41 by screws; a card reader module 3 is installed inside the shell module 1, and a video card module 2 is plugged into one side of the card reader module 3, and the card reader module 3 includes a card plug-in component 4, a card reading component 5 and a transmission and sensing component 6. The card plug-in component 4 and the card reading component 5 are installed side by side inside the shell module 1, and a transmission and sensing component 6 is installed on the surface of the card plug-in component 4. The transmission and sensing component 6 is used for in-place sensing after the video card module 2 is inserted.

[0022] During implementation, the video card module 2 is inserted from one side. During insertion, the video card module 2 will pass through the front panel 13 and enter the card assembly 4. During the insertion process, the module guide strips 22 on both sides of the video card shell 21 and the guide grooves 44 on the inner wall of the card rack 41 cooperate with each other for guidance.

[0023] Further, if Figure 2 as well as Figure 5 As shown, the card reader assembly 5 includes a power supply fixing plate 51, a card reader PCB 52 and a cooling fan 53. The power supply fixing plate 51 is arranged inside the shell module 1, and the card reader PCB 52 is installed on the surface of the power supply fixing plate 51. Four cooling fans 53 are arranged on the surface of the power supply fixing plate 51, and the cooling fans 53 are used to dissipate heat for the power supply fixing plate 51 and the card reader PCB 52.

[0024] Among them, the power supply fixing board 51 is the power access point of the flight recorder, which is responsible for introducing electrical energy from the aircraft's main power system and distributing it to various modules inside the recorder that need electricity. It ensures that each part obtains a stable and reliable operating voltage; it is installed with connecting terminals, plugs or terminal blocks to achieve connection with the main cable harness or onboard power system to avoid power spikes or abnormal interference that damages the internal circuit; the card reader PCB52 of the present invention is mainly responsible for reading, writing, encrypting, and backing up flight data from the memory card, ensuring the security, real-timeness and integrity of the data, and supporting multiple functions such as fault detection, data transmission and equipment maintenance. It is a core component to ensure flight data recording and analysis.

[0025] Further, if Figure 3 as well as Figure 6 As shown, the video card module 2 includes a video card housing 21 to an acquisition sub-board PCB29, and the interior of the video card housing 21 is installed with an acquisition main board PCB23, a video card receiving end 24, a video card transmitting end 25, a power control board PCB26, a magnetic core 27 and an acquisition sub-board PCB29 by screws; a positioning guide sleeve 28 is installed on the surface of the video card housing 21 by bolts, and one end of the positioning guide sleeve 28 passes through the video card housing 21, and the video card housing 21 is positioned by the guide positioning pin 42 and the positioning guide sleeve 28 when inserted into the card holder 41; module guide strips 22 are installed on both sides of the video card housing 21 by bolts, and the module guide strips 22 are used for limiting the video card housing 21 when the card assembly 4 is inserted.

[0026] Among them, the acquisition main board PCB23 will collect, process and manage flight data, perform signal conversion, clock synchronization, data storage and communication, and perform data verification, encryption and system monitoring to ensure that the flight recorder stably and reliably records and stores all important flight parameters during the flight; and the acquisition sub-board PCB29 will collect and store various types of flight data generated during the flight to ensure the integrity, security, reliability and efficient storage of the data; it uses redundant storage, encryption protection, data compression and other technologies to ensure that data can be extracted and analyzed after the flight, providing support for flight safety, incident investigation and flight performance evaluation.

[0027] The video card transmitter 25 of the present invention mainly functions to process and transmit video signals during flight, store image data, enhance the integrity of flight records, improve flight safety, and provide important video evidence for accident investigations; while the video card receiver 24 mainly functions to receive, decode and store video signals, ensure the synchronization of video and flight data, and provide image data support for flight monitoring, troubleshooting, accident investigation, etc.; the magnetic core 27 of the present invention mainly functions to suppress electromagnetic interference, filter signals, stabilize power supply, reduce signal reflections and improve the system's anti-interference ability, thereby ensuring the accuracy, stability and reliability of flight data recording.

[0028] Further, if Figure 4 as well as Figure 7 As shown, the card assembly 4 includes a card rack 41 and a guide positioning pin 42. The card rack 41 is installed inside the shell module 1. The surface of the card rack 41 is installed with a guide positioning pin 42, which is used to position the video card module 2 after insertion; the interior of the card assembly 4 also includes a front baffle 43, and the front baffle 43 is hinged to the surface of the card rack 41 through an axis. The front baffle 43 is used to protect the interior of the shell module 1; the left and right sides of the inner wall of the card rack 41 are provided with guide grooves 44, which cooperate with the module guide strips 22 to limit the position of the video card module 2 when it is inserted into the card assembly 4; the surface of the card rack 41 is also installed with a POW data acquisition board 45.

[0029] The rear panel of the card holder 41 is also equipped with an electrical interface integration area, a power interface power input, a data bus interface (connected to the avionics system, such as ARINC 429, MIL-STD-1553, RS-422, etc., and a backup power interface such as an emergency battery connection); it has the function of fixing the recorder to the fuselage or equipment rack; it is designed with mounting holes, bracket interfaces, positioning slots, etc., so that it can be firmly installed in the aircraft body structure to ensure that the recorder will not become loose due to vibration or impact during flight; and the POW data acquisition board 45 is mainly used to collect, process, convert and store data from sensors and equipment, and support stable operation and fault diagnosis of the equipment through real-time monitoring, signal conditioning and data analysis.

[0030] Further, if Figure 2 as well as Figure 8As shown, the transmission and sensing component 6 includes a module sensing shaft 61, a top-opening optical couple sensor 62, a sensor fixing seat 63, a sensor baffle 64 and a rotary optical couple sensor 65; the module sensing shaft 61 is rotatably connected to the surface of the card holder 41, the surface of the card holder 41 is mounted with a sensor fixing seat 63, and the surface of the sensor fixing seat 63 is mounted with a top-opening optical couple sensor 62 by bolts, and the top-opening optical couple sensor 62 cooperates with the module sensing shaft 61 to realize signal exchange, power transmission or data connection; the surface of the card holder 41 is mounted with a rotary optical couple sensor 65, the sensor baffle 64 The sensing latch 641 is hinged to the surface of the card holder 41, and one side of the sensing baffle 64 passes through the card holder 41 and extends into the interior of the guide groove 44. When the video card module 2 is pushed into the card holder 41, the module guide bar 22 pushes open the sensing baffle 64, which triggers the rotary optical coupler sensor 65. A knob handle 611 is installed at one end of the surface of the module sensing shaft 61, and a spring retaining ring 612 is mounted on the surface of the module sensing shaft 61. One end of the spring retaining ring 612 contacts the card holder 41, and the other end contacts the surface of the module sensing shaft 61.

[0031] Among them, the top-opening optical coupler sensor 62 and the rotating optical coupler sensor 65 are both ITR8402 model optical coupler sensors. The optical coupler sensor of the present invention plays an important role in signal isolation, data transmission and protection. The optical coupler sensor is an electronic component that converts the input signal into an optical signal and then converts the optical signal into an output signal. It is used for electrical isolation to ensure the safety and reliability between different circuits. It mainly ensures that the equipment works stably, safely and reliably during flight through functions such as signal isolation, high-voltage protection, data transmission and reduction of electromagnetic interference.

[0032] The sensing baffle 64 of the present invention is used to push open the baffle when the video card module 2 is pushed into the specified track, triggering the optical coupler sensor to receive relevant instructions; signal sensing and control, module alignment and positioning, to prevent misoperation or interference; improve anti-interference and electromagnetic shielding, and enhance the reliability and safety of the equipment; the module sensing shaft 61 can be rotated or turned, and is used for signal transmission or electrical connection between multiple modules; through rotation, the shaft helps the module to dock with other systems to achieve signal exchange, power transmission or data connection; such a design can simplify the system structure, reduce the number of fixed interfaces, and enhance the flexibility and scalability of the system; control the rotation and positioning of the module; increase mechanical flexibility and modular design to ensure signal transmission stability; and the spring retaining ring 612 can provide multiple functions such as fixation, anti-loosening, shock absorption, and simplified assembly to ensure equipment stability, safety and maintenance convenience.

[0033] Working principle: When in use, insert the video card module 2 from one side. When inserted, the video card module 2 will pass through the front panel 13 and enter the card assembly 4. During the insertion process, the module guide strips 22 on both sides of the video card shell 21 and the guide grooves 44 on the inner wall of the card rack 41 cooperate with each other for guidance. After the video card module 2 is inserted, it is positioned by the interference fit of the positioning guide sleeve 28 and the guide positioning pin 42 to prevent the components from being misplaced or loose. At the same time, when the module guide strip 22 is inserted, the sensing baffle 64 will be squeezed to make the sensing baffle 64 rotate. When the video card module 2 is inserted into place, the sensing baffle 64 will be stuck in the groove of the module guide strip 22. At this time, the rotary photocoupler sensor 65 will be triggered, indicating that the video card module 2 has been inserted into place.

[0034] After the video card module 2 is inserted, the knob handle 611 is rotated, and the knob handle 611 will drive the module sensing shaft 61 to rotate. When the module sensing shaft 61 rotates, it will cooperate with the top-opening optical coupler sensor 62 to realize signal exchange, power transmission or data connection. Then the power supply fixing board 51 is used to power the entire instrument to realize operation. During operation, the acquisition main board PCB23 will collect, process and manage flight data, and the acquisition sub-board PCB29 will collect and store various flight data generated during the flight. The POW data acquisition board 45 is used to collect, process, convert and store data from sensors and equipment, and then read, write, encrypt and back up flight data from the memory card through the card reader PCB52 to ensure the security, real-time and integrity of the data. Finally, the entire instrument is cooled by the cooling fan 53.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A flight parameter recorder, comprising a housing module (1), characterized in that: A card reader module (3) is installed inside the shell module (1), and a video card module (2) is plugged into one side of the card reader module (3). The card reader module (3) includes a card insertion component (4), a card reading component (5), and a transmission and sensing component (6). The card insertion component (4) and the card reading component (5) are installed side by side inside the shell module (1). A transmission and sensing component (6) is installed on the surface of the card insertion component (4). The transmission and sensing component (6) is used for in-place sensing after the video card module (2) is inserted. The card insertion assembly (4) comprises a card insertion rack (41) and a guide positioning pin (42), wherein the card insertion rack (41) is mounted inside the housing module (1), and a guide positioning pin (42) is mounted on the surface of the card insertion rack (41), and the guide positioning pin (42) is used for positioning the video card module (2) after insertion; The transmission and sensing component (6) includes a module sensing shaft (61), a top-opening optical couple sensor (62), a sensor fixing seat (63), a sensing baffle (64) and a rotating optical couple sensor (65); the module sensing shaft (61) is rotatably connected to the surface of the card holder (41), the sensor fixing seat (63) is installed on the surface of the card holder (41), and the top-opening optical couple sensor (62) is installed on the surface of the sensor fixing seat (63) through bolts, and the top-opening optical couple sensor (62) cooperates with the module sensing shaft (61) to realize signal exchange, power transmission or data connection.

2. A flight parameter recorder according to claim 1, characterized in that: The card reader assembly (5) includes a power supply fixing plate (51), a card reader PCB (52) and a cooling fan (53). The power supply fixing plate (51) is arranged inside the housing module (1), and the card reader PCB (52) is mounted on the surface of the power supply fixing plate (51). Four cooling fans (53) are arranged on the surface of the power supply fixing plate (51), and the cooling fans (53) are used to dissipate heat from the power supply fixing plate (51) and the card reader PCB (52).

3. A flight parameter recorder according to claim 1, characterized in that: The housing module (1) is formed by enclosing a lower cover plate (11), an upper cover plate (12) and a front panel (13), and the lower cover plate (11) and the upper cover plate (12) are fixedly connected to the card holder (41) and the power supply fixing plate (51) by screws, while the front panel (13) is fixedly connected to the card holder (41) by screws.

4. A flight parameter recorder according to claim 1, characterized in that: The video card module (2) comprises a video card housing (21) to an acquisition sub-board PCB (29), wherein an acquisition main board PCB (23), a video card receiving end (24), a video card transmitting end (25), a power control board PCB (26), a magnetic core (27) and an acquisition sub-board PCB (29) are mounted inside the video card housing (21) by screws.

5. A flight parameter recorder according to claim 4, characterized in that: A positioning guide sleeve (28) is installed on the surface of the video card housing (21) via bolts, and one end of the positioning guide sleeve (28) passes through the video card housing (21). When the video card housing (21) is inserted into the card holder (41), the guide positioning pin (42) and the positioning guide sleeve (28) are plugged into each other to achieve positioning.

6. A flight parameter recorder according to claim 5, characterized in that: Module guide bars (22) are installed on both the left and right sides of the video card housing (21) via bolts. The module guide bars (22) are used for limiting the position of the video card housing (21) when the card assembly (4) is inserted.

7. The flight parameter recorder according to claim 1, characterized in that: The interior of the card insertion assembly (4) further includes a front baffle (43), and the front baffle (43) is hinged to the surface of the card insertion frame (41) via a shaft. The front baffle (43) is used to protect the interior of the housing module (1).

8. The flight parameter recorder according to claim 1, characterized in that: Guide grooves (44) are provided on both the left and right sides of the inner wall of the card holder (41). The guide grooves (44) cooperate with the module guide strips (22) to limit the position of the video card module (2) when it is inserted into the card assembly (4). A POW data acquisition board (45) is also installed on the surface of the card holder (41).

9. The flight parameter recorder according to claim 1, characterized in that: A rotating optical couple sensor (65) is installed on the surface of the card holder (41), and the sensing baffle (64) is hinged to the surface of the card holder (41) through a sensing pin (641), and one side of the sensing baffle (64) passes through the card holder (41) and extends to the inside of the guide groove (44), and when the video card module (2) is pushed into the card holder (41), the module guide bar (22) will push open the sensing baffle (64), and after the sensing baffle (64) is pushed open, the rotating optical couple sensor (65) is triggered.

10. The flight parameter recorder according to claim 1, characterized in that: A knob handle (611) is installed on one end of the surface of the module sensing shaft (61), and a spring retaining ring (612) is sleeved on the surface of the module sensing shaft (61), one end of the spring retaining ring (612) contacts the card holder (41), and the other end contacts the surface of the module sensing shaft (61).

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