Wearable safety protection air bag suit system for low-altitude flight personnel

Abstract

The invention discloses a wearable safety protection airbag suit system for low-altitude flight personnel, and relates to the field of safety protection equipment. Comprising a garment body which is of a wearable structure in the form of a vest or jacket with an interlayer; the air bag module is stored in the interlayer of the garment body in a folded state; the gas generation and supply module comprises a gas cylinder for storing high-pressure inert gas and a triggering device for controlling gas release; the intelligent trigger and control system comprises a sensing unit used for monitoring the motion posture and the height change rate of the wearer in real time, a control unit used for running a falling detection algorithm, judging an accident state according to monitoring parameters and generating a trigger signal, and a trigger execution unit used for receiving the trigger signal and starting the trigger device; the control unit is electrically connected with the sensing unit and the trigger execution unit. The system has the advantages of omnibearing active protection, scene adaptive intelligent triggering, high integration and friendly wearing.

Description

Technical Field

[0001] This invention relates to the field of safety protection equipment, and more particularly to a wearable safety protection airbag suit system for low-altitude flight personnel. Background Technology

[0002] With the rapid development of the low-altitude economy, low-altitude aircraft such as electric vertical takeoff and landing (eVTOL) aircraft are gradually moving towards commercial operation. Compared with traditional air or ground transportation, low-altitude aircraft often operate in complex urban low-altitude environments, and their accident scenarios may include abnormal attitude falls, forced landings, or collisions, posing unique impact injury risks to occupants. Currently, personnel safety protection in this field mainly relies on the overall safety design of the aircraft and parachutes, and there is a lack of effective personal protective equipment specifically designed to protect the human body from direct impact injuries in accidents.

[0003] Traditional car airbags or motorcycle airbag suits are primarily designed for planar collisions in a specific direction. Their triggering logic, airbag layout, and protection range are ill-suited to the multi-axial, complex impacts that may occur during low-altitude flight. Therefore, there is an urgent need for a specialized airbag suit that is highly integrated, reacts rapidly, and can adaptively wrap and protect the core and entire body of an individual.

[0004] Therefore, this invention proposes a wearable safety airbag suit system for low-altitude flight personnel. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wearable safety airbag suit system for low-altitude flight personnel.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wearable safety airbag suit system for low-altitude flight personnel includes:

[0008] The garment itself is a wearable structure in the form of a vest or jacket with layers.

[0009] The airbag module is stored in the interlayer of the garment body in a folded state. The airbag module is an integrally molded flexible bladder with multiple interconnected air chambers divided by internal stitching or hot pressing. The multiple air chambers are configured to cover and protect the wearer's head, neck, torso and hips respectively after inflation.

[0010] A gas generation and supply module, comprising at least one gas cylinder storing high-pressure inert gas and a triggering device for controlling gas release.

[0011] The intelligent triggering and control system includes a sensing unit for real-time monitoring of the wearer's posture and rate of change of height, a control unit for running a fall detection algorithm, determining the accident status based on monitoring parameters, and generating a trigger signal, and a trigger execution unit for receiving the trigger signal and activating the triggering device; the control unit is electrically connected to the sensing unit and the trigger execution unit respectively.

[0012] The intelligent triggering and control system is configured to: when an accident is detected, activate the triggering device through the triggering execution unit, so that the gas generating and supply module releases high-pressure gas to fill the airbag module, causing it to unfold and form a three-dimensional wrapping and buffer protection.

[0013] Preferably, the outer layer of the garment body is made of a highly visible, wear-resistant, flame-retardant and waterproof synthetic fiber fabric, and is equipped with reflective strips; the inner layer of the garment body is made of a skin-friendly and breathable fabric; the garment body is also equipped with a wearing fastener, an integrated interface for connecting with an external safety belt, a status display area and a distress call device mounting position.

[0014] Preferably, the multiple air chambers of the airbag module include a main air chamber corresponding to the back, chest, shoulder and pelvic regions of the human body, and an annular air chamber surrounding the neck. The air chambers are connected by internal airways, so that after inflation, they can form a three-dimensional wrap around the wearer's upper body and pelvic region from multiple directions, expanding synchronously or sequentially.

[0015] Preferably, the sensing unit includes at least one inertial measurement unit (IMU) and one barometer;

[0016] The inertial measurement unit integrates a three-axis accelerometer and a three-axis gyroscope;

[0017] The fall detection algorithm running on the control unit is configured to fuse and analyze acceleration data, angular velocity data, and altitude change rate data from the inertial measurement unit, and determine whether an accident has occurred by identifying specific motion sequences.

[0018] The motion sequence includes one or more of weightlessness, abnormal angular velocity changes, and impact acceleration.

[0019] Preferably, the gas generation and supply module further includes a manual triggering mechanism, which is mechanically coupled to the triggering device to form a redundant mechanical triggering path independent of the intelligent triggering and control system.

[0020] Preferably, it also includes an emergency call module;

[0021] The emergency call module is electrically connected to the intelligent triggering and control system and is configured to automatically activate after the airbag module is triggered.

[0022] The emergency distress signal module includes at least one of a high-brightness LED strobe light and a high-decibel buzzer, used to emit an audible and visual distress signal.

[0023] Preferably, the gas cylinder in the gas generating and supply module is a disposable compressed CO2 or N2 miniature gas cylinder;

[0024] The triggering device is an electrically driven membrane breaking device or a solenoid valve, and the gas cylinder is connected to the air inlet of the airbag module through a quick-connect interface with a self-sealing valve.

[0025] Preferably, the garment body has a modular storage bag and a thread management structure in its interlayer, which are used to fix and accommodate the airbag module, the main board and sensor of the control unit, the gas cylinder and the battery respectively.

[0026] Preferably, the trigger determination time of the intelligent triggering and control system is 20 milliseconds, and the inflation time of the airbag module is 100 to 200 milliseconds.

[0027] Preferably, the criteria in the fall detection algorithm include a negative acceleration exceeding -0.5g for 1 second.

[0028] The beneficial effects of this invention are as follows:

[0029] All-round active protection: Through the integrated multi-chamber airbag design covering key areas, it can provide unprecedented full-body cushioning at the moment of an accident, greatly reducing the risk of multiple serious injuries.

[0030] Scene-adaptive intelligent triggering: The fusion perception algorithm, designed specifically for low-altitude falls, can accurately distinguish between normal motion and accident states, achieving highly reliable intelligent triggering with a low false alarm rate.

[0031] Highly integrated and wearable: All complex technology modules are cleverly integrated into everyday clothing without affecting mobility, and feature high visibility and automatic emergency call functions, enhancing overall safety.

[0032] Filling a market gap: It provides a groundbreaking personal safety solution for the emerging low-altitude economic safety needs, with significant social and economic value. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the garment body structure of a wearable safety protective airbag suit system for low-altitude flight personnel proposed in this invention.

[0034] Figure 2This is an overall architecture diagram of a wearable safety airbag suit system for low-altitude flight personnel proposed in this invention.

[0035] Figure 3 This is a schematic diagram of the gas generation and supply module of a wearable safety airbag suit system for low-altitude flight personnel proposed in this invention.

[0036] Figure 4 This is a schematic diagram of the intelligent triggering and control system of a wearable safety airbag suit system for low-altitude flight personnel proposed in this invention.

[0037] 1. Garment body; 2. Airbag module; 3. Gas generation and supply module; 31. Gas cylinder; 32. Triggering device; 33. Manual triggering mechanism; 4. Intelligent triggering and control system; 41. Sensing unit; 42. Control unit; 43. Triggering execution unit; 5. Emergency call module; Detailed Implementation

[0038] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] Example 1: Basic Vest-Style Airbag Suit

[0041] This embodiment provides a basic vest-style airbag suit system, focusing on core protective functions and basic integration.

[0042] Garment Body 1: This short vest style is easy to put on and take off without restricting lower limb movement. The outer layer is made of 500D flame-retardant Cordura fabric in an international fluorescent orange color and features 3M reflective strips. The inner layer is made of CoolMax quick-drying mesh fabric for enhanced comfort. The vest's front placket is secured with both high-strength quick-release buckles and a zipper. A D-ring connector for connecting to the aircraft seatbelt is located on the back. Concealed Velcro pockets are located on the back and sides of the torso, with internal compartments creating storage space.

[0043] Airbag Module 2: Made of polyamide 66 coated fabric, integrally molded using a high-frequency heat-sealing process. The interior of the airbag is divided into interconnected air chambers through a heat-pressing process, mainly including: a large back air chamber covering the back of the head and back; thoracic and abdominal air chambers extending from both sides to the front of the chest; a ring-shaped neck air chamber surrounding the neck; and hip air chambers extending downwards to cover the pelvis and groin. When folded, the airbag is neatly stored within the layers on the back and sides of the vest.

[0044] Gas generation and supply module 3: A disposable compressed CO2 cylinder 31 with a capacity of 24 grams is used; the cylinder is placed vertically in a special elastic fabric pocket on the right rear side of the vest waist; the triggering device 32 is an electrically detonating membrane valve, connected to the air inlet pipe of the airbag via a quick-connect fitting with a self-sealing function. This embodiment does not include a manual triggering mechanism.

[0045] Intelligent Triggering and Control System 4:

[0046] Sensing unit 41: It includes a nine-axis IMU that integrates a three-axis accelerometer, a three-axis gyroscope, a three-axis magnetometer, and a high-precision barometer, all integrated on a small PCB board. The PCB board is encapsulated in a silicone protective sleeve and placed in a dedicated pocket on the inside of the vest, at the position of the left shoulder blade.

[0047] The control unit 42 and trigger execution unit 43 utilize a microcontroller with an ARM Cortex-M4 core as their core, sharing the same PCB board as the sensing unit. Their built-in fall detection algorithm continuously analyzes the IMU's acceleration, angular velocity data, and the barometer's rate of change of altitude. The algorithm's criteria include: detecting a vertical negative acceleration lasting approximately 1 second with an amplitude exceeding -0.5g, and simultaneously detecting an angular velocity vector exceeding a preset threshold in any axis. When the microcontroller determines an accident has occurred, it sends an ignition current to the trigger execution unit 43 (i.e., the detonator) within 20 milliseconds.

[0048] Emergency call module 5: Directly driven by control unit 42; includes two high-brightness LED lights located on the left and right shoulders respectively and a high-decibel piezoelectric buzzer located on the upper back; after the airbag is triggered, the LED lights flash at a frequency of 5 times per second, and the buzzer emits an alarm sound of about 110 decibels.

[0049] Workflow: When the wearer is active, the system is in monitoring mode; once a fall that meets the algorithm criteria occurs, the microcontroller quickly sends a trigger signal, the electric detonator punctures the gas cylinder sealing membrane, and high-pressure CO2 gas fills each chamber of the airbag within about 150 milliseconds, forming a cushioning effect on the head, neck, torso, and pelvis, while the sound and light distress call system is activated.

[0050] Example 2: Full-Function Jacket-Style Airbag Suit

[0051] Based on Example 1, this embodiment adds manual trigger redundancy, expands the protective area, and improves wearability, making it suitable for a wider range of low-altitude operation scenarios.

[0052] Garment Body 1: Adopting a long jacket style, the fabric is based on Example 1 with the addition of a waterproof and breathable membrane, such as an ePTFE membrane; the jacket features a removable thermal liner. In addition to the back panel, extra attachment points are added to the shoulders; the airbag compartments extend to the shoulders and outer upper arms.

[0053] Airbag Module 2: Based on Embodiment 1, the airbag design adds an upper arm protective air chamber extending from the shoulder; the neck air chamber is designed to be higher, providing some support for the chin as well. The airbag material is made of high-strength silicone-coated aramid fabric.

[0054] Gas generation and supply module 3: adopts a parallel design of dual 30g N2 gas cylinders 31 to provide more sufficient gas volume and faster gas filling speed, with a target of <100 milliseconds; a manual triggering mechanism 33 is added: a mechanical pull ring with a safety cap, coupled to an independent mechanical striker device via a steel cable; the mechanical striker device is installed in parallel with the electric detonator membrane rupture valve to form a completely independent mechanical triggering path.

[0055] Intelligent Triggering and Control System 4: The algorithm has been upgraded, increasing the ability to recognize complex motion patterns. For example, it can distinguish between normal bouncing, rapid descent down stairs and real dangerous falls, further reducing the false alarm rate. The system has a self-test function, which displays the current status through three LED status indicators on the chest of the garment body 1: power, system normal, and fault.

[0056] Emergency call module 5: In addition to the audible and visual alarm, it can be optionally equipped with a low-power GPS / BeiDou positioning module and a cellular mobile communication module; after the airbag is triggered, this module can automatically send a distress text message containing precise location information to the preset contact person or rescue center.

[0057] Workflow: The intelligent triggering process is the same as in Example 1. When the intelligent system fails or the user determines that it needs to be triggered in advance, the wearer can pull the manual pull ring, and the mechanical firing pin will directly puncture the gas cylinder sealing membrane to inflate the airbag.

[0058] Example 3: Split-type integrated protection system

[0059] This embodiment is designed for specific professional applications, such as fire fighting and rescue, and the system functions are divided and modularized, and deeply integrated with other equipment.

[0060] System composition: This system consists of two parts: the main protective suit unit A and the independent air supply / control unit B, which are connected by a sturdy cable with a multi-pin quick-connect interface.

[0061] Protective suit main unit A: This is a simplified version of the garment body 1, which can be designed as a close-fitting elastic base layer or a functional vest that can be worn as outerwear. It mainly includes airbag module 2 and basic sensors. The airbag design focuses more on lightweight and flexibility.

[0062] Independent air supply / control unit B: Can be carried independently or mounted on the aircraft seat. This unit integrates:

[0063] Enhanced gas generation and supply module 3b: Using a larger capacity high-pressure gas cylinder, such as a 100-gram N2 cylinder or a cold gas generator, it can provide multiple inflation capabilities for the airbag.

[0064] Enhanced Intelligent Triggering and Control System 4b: Includes a more powerful processing unit and more sensors such as a data interface that can be connected to the aircraft bus and millimeter-wave radar, to achieve higher-precision accident judgment based on multi-source information fusion.

[0065] High-power emergency call module 5b: Includes more powerful LED lights and sirens, and can be integrated with a satellite communication module.

[0066] Workflow: Under normal circumstances, units A and B work together, with more complex and precise triggering logic, such as incorporating aircraft attitude data for joint decision-making. In emergencies, if the connecting cable is severed, the independent power supply and basic sensors within the main unit A of the protective suit will take over control, triggering locally based on a preset backup algorithm to ensure that core protective functions are not lost. This design is particularly suitable for professionals who need to work in conjunction with large equipment.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wearable safety airbag suit system for low-altitude flight personnel, characterized in that, include: The garment body (1) is a wearable structure in the form of a vest or jacket with interlayers; The airbag module (2) is stored in the interlayer of the garment body (1) in a folded state. The airbag module (2) is an integral molded flexible bladder with multiple interconnected air chambers divided by internal stitching or hot pressing process. The multiple air chambers are configured to cover and protect the wearer's head, neck, torso and hips respectively after inflation. The gas generation and supply module (3) includes at least one gas cylinder (31) for storing high-pressure inert gas and a triggering device (32) for controlling gas release. The intelligent triggering and control system (4) includes a sensing unit (41) for real-time monitoring of the wearer's posture and rate of change of height, a control unit (42) for running a fall detection algorithm and determining the accident status and generating a trigger signal based on the monitoring parameters, and a trigger execution unit (43) for receiving the trigger signal and activating the triggering device (32); the control unit (42) is electrically connected to the sensing unit (41) and the trigger execution unit (43) respectively; The intelligent triggering and control system (4) is configured to: when an accident is determined to occur, activate the triggering device (32) through the triggering execution unit (43) to release high-pressure gas from the gas generation and supply module (3) and fill the airbag module (2) so that it unfolds to form a three-dimensional wrapping and buffer protection.

2. The wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The outer fabric of the garment body (1) is made of synthetic fiber fabric with high visibility, wear resistance, flame retardancy and waterproof, and is equipped with reflective strips; the inner layer of the garment body (1) is made of skin-friendly and breathable fabric; the garment body (1) is also equipped with a wearing fastener, an integrated interface for connecting with an external safety belt, a status display area and a distress call device mounting position.

3. The wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The airbag module (2) has multiple air chambers, including a main air chamber corresponding to the back, chest, shoulder and pelvic regions of the human body, and an annular air chamber around the neck. The air chambers are connected by internal airways, so that after inflation, they can form a three-dimensional wrap around the upper body and pelvic region of the wearer from multiple directions, which can be synchronously or sequentially expanded.

4. The wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The sensing unit (41) includes at least one inertial measurement unit (IMU) and one barometer; The inertial measurement unit integrates a three-axis accelerometer and a three-axis gyroscope; The fall detection algorithm running in the control unit (42) is configured to perform fusion analysis on acceleration data, angular velocity data, and altitude change rate data from the inertial measurement unit and the barometer, and to determine whether an accident has occurred by identifying specific motion sequences. The motion sequence includes one or more of weightlessness, abnormal angular velocity changes, and impact acceleration.

5. A wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The gas generation and supply module (3) also includes a manual triggering mechanism (33), which is mechanically coupled to the triggering device (32) to form a redundant mechanical triggering path independent of the intelligent triggering and control system (4).

6. A wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, It also includes an emergency call module (5); The emergency call module (5) is electrically connected to the intelligent triggering and control system (4) and is configured to automatically activate after the airbag module (2) is triggered; The emergency distress module (5) includes at least one of a high-brightness LED strobe light and a high-decibel buzzer, used to emit an audible and visual distress signal.

7. A wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The gas cylinder (31) in the gas generation and supply module (3) is a disposable compressed CO2 or N2 miniature gas cylinder; The triggering device (32) is an electrically driven membrane breaking device or a solenoid valve, and the gas cylinder (31) is connected to the air inlet of the airbag module (2) through a quick-connect interface with a self-sealing valve.

8. A wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The garment body (1) has a modular storage bag and a thread management structure in its interlayer, which are used to fix and accommodate the airbag module (2), the main board and sensor of the control unit (42), the gas cylinder (31) and the battery respectively.

9. A wearable safety airbag suit system for low-altitude flight personnel according to claim 1, characterized in that, The trigger determination time of the intelligent trigger and control system (4) is 20 milliseconds, and the inflation time of the airbag module (2) is 100 to 200 milliseconds.

10. A wearable safety airbag suit system for low-altitude flight personnel according to claim 4, characterized in that, The criteria in the fall detection algorithm include a negative acceleration exceeding -0.5g for 1 second.

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