An EVTOL safety seat system and projection method

Abstract

This invention provides an EVTOL safety seat system: a safety seat including a seat body and an airbag for passenger protection; a power unit for ejecting the seat from the EVTOL; an infrared detector; a terrain database; a system processing module for generating safety seat deployment commands and sending them to the safety seat; and an alarm module for sending the safety seat's location information. The system processing module, the infrared detector, the power unit, and the alarm module are connected to the airbag. This system uses terrain database data combined with EVTOL avionics system data to calculate deployment commands, enabling the safety seat to be deployed to a safe terrain area, reducing the probability of passenger injury. It also uses infrared video information sent by the infrared detector, combined with location information sent by the alarm module and attitude information sent by the power unit, to calculate flight control commands, controlling the safety seat to avoid landing in pedestrian or hazardous areas.

Description

Technical Field

[0001] The present invention belongs to the technical field of EVTOL and flight safety, and in particular relates to an EVTOL safety seat system and a projection method. Background Art

[0002] EVTOL is a new technology in the aviation field with great application prospects, but the safe flight of EVTOL, especially the personal safety of passengers during flight, is crucial to the commercial operation of EVTOL. Today, EVTOL is still in the new technology research and development stage in the world, and its safety, reliability, and airworthiness have not yet reached the stage that meets the requirements for formal manned commercial use. Safety protection measures after EVTOL flight accidents are still a major problem facing the EVTOL field. Globally, research on EVTOL safety seats is still in its infancy. Summary of the invention

[0003] In order to solve the above problems, an object of the present invention is to provide an EVTOL safety seat system and a safety seat projection method, so as to protect the personal safety of passengers when the EVTOL encounters an unsafe flight scenario.

[0004] In order to achieve the above object, the present invention provides the following technical solution, providing an EVTOL safety seat system, the system comprising:

[0005] A safety seat for passengers, wherein the seat comprises a seat body and a safety airbag for protecting passengers, wherein the safety airbag is separated from the safety seat in the air after the safety seat is ejected;

[0006] A power unit, used to eject the installed seat out of the EVTOL and provide flight power for the safety seat to fly in the air;

[0007] Infrared detector, used to detect the surrounding environment of EVTOL;

[0008] Terrain database, used to store terrain data of the EVTOL flight area;

[0009] The system processing module is used to generate a safety seat projection instruction and send it to the safety seat after receiving the flight data sent by the EVTOL avionics system, the EVTOL surrounding environment obtained by the infrared detector and the terrain data stored in the terrain database;

[0010] Alarm module, used to send the location information of the safety seat,

[0011] Wherein, the system processing module, the infrared detector, the power device and the alarm module are connected to the airbag.

[0012] The EVTOL safety seat system provided by the present invention also has the following characteristics: the system further includes a safety seat controller and a safety battery.

[0013] The safety seat controller is used to manually control the ejection function of the safety seat;

[0014] The safety battery is used to provide emergency power supply for the system processing module.

[0015] The EVTOL safety seat system provided by the present invention also has the following feature: the system further comprises a transmission device, and the transmission device is used to adjust the position of the safety seat in the EVTOL so that the safety seat is located at the ejection position.

[0016] The EVTOL safety seat system provided by the present invention also has the following characteristics: the power device includes a posture sensor installed in the middle of the airbag and a plurality of jet devices installed around the airbag.

[0017] The posture sensing device is used to measure the posture of the safety seat in real time and transmit the posture data to the system processing module;

[0018] The jet device is used to provide flight power for the safety seat and adjust the flight posture.

[0019] The EVTOL safety seat system provided by the present invention also has the following characteristics: the power device also includes four active flying wings for actively controlling the flight trajectory, and the active flying wings include active flying wing jet devices for providing flight power and control buttons for adjusting the size of the flight power.

[0020] The EVTOL safety seat system provided by the present invention also has the feature that a plurality of laser positioning and emitting devices are installed on the safety airbag, and the laser positioning and emitting devices are used to continuously emit laser beams to the safe landing coordinate point area after the safety seat is projected into the air.

[0021] Another object of the present invention is to provide an EVTOL safety seat projection method, wherein the safety seat system is any of the safety seat systems described above.

[0022] The safety seat projection method provided by the present invention also has the following characteristics, and the method comprises the following steps:

[0023] S1: Determine whether projection is needed;

[0024] S2: The system processing module calculates / sets the projection energy;

[0025] S3: The power device projects the safety seat according to the preset energy:

[0026] S4: The safety seat separates from the main structure of the seat in the air and deploys the airbag:

[0027] S5: The system continues to calculate flight control instructions;

[0028] S6: The power device controls the safety seat airbag to fly and land according to the flight control command; or the passenger controls the safety seat airbag to fly and land according to the active flight wing of the power device operated by the passenger;

[0029] S7: The alarm module sends the safety seat airbag landing position to the rescue station.

[0030] The safety seat projection method provided by the present invention also has the following characteristics: in S2: the calculation method of the projection energy in the Z-axis direction is as follows:

[0031]

[0032] Wherein, P0z is the projected energy in the z direction, W is the total weight of the safety seat and the passenger, V0z is the speed of the safety seat in the z-axis direction before projection, and the z-axis direction refers to the vertical direction;

[0033] The calculation method of the projected energy in the x-axis direction is as follows:

[0034]

[0035] Among them, P0x is the projected energy in the x-direction, V0x is the x-axis speed of the safety seat before projection, Dx is the x-axis distance from the safety coordinate point, and the x-axis is the north direction;

[0036] The calculation method of the projected energy in the y-axis direction is as follows:

[0037]

[0038] Among them, P0y is the projected energy in the y direction, V0y is the y-axis speed of the safety seat before projection, Dy is the y-axis distance from the safety coordinate point, and the y-axis direction is east.

[0039] The safety seat projection method provided by the present invention also has the following feature: in S2, the functional relationship between the falling time Tz and the falling distance Dz is as follows:

[0040]

[0041] Where Dz is the z-axis distance from the safety coordinate point, W f It is the weight of the safety seat after the seat body is separated and the sum of the passenger's weight, g is the acceleration of gravity, k is the air resistance coefficient, and Tz is the falling time of the safety seat.

[0042] The safety seat projection method provided by the present invention also has the feature that the flight control instruction in S5 changes at any time with the change of time and position.

[0043] Beneficial Effects

[0044] The EVTOL safety seat system provided by the present invention adopts terrain database data combined with EVTOL avionics system data to calculate projection instructions, so as to project the safety seat to a safe terrain area and reduce the probability of passenger injury; it adopts infrared video information sent by infrared detectors, combined with position information sent by alarm modules and attitude information sent by power devices, to calculate flight control instructions and control the safety seat to avoid landing in pedestrian or danger source areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, 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 disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 A schematic diagram of the structure of an EVTOL safety seat system provided by an embodiment of the present invention;

[0047] Figure 2 This is a working flow chart of the EVTOL safety seat system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below in conjunction with the accompanying drawings and examples, but it should be noted that these implementation modes are not limitations of the present invention, and equivalent changes or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these implementation modes are all within the scope of protection of the present invention.

[0049] In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0050] In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0051] The terms "installed", "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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0052] like Figure 1-Figure 2 As shown, this embodiment provides an EVTOL safety seat system, the system comprising:

[0053] A safety seat for passengers, wherein the seat comprises a seat body and a safety airbag for protecting passengers, wherein the safety airbag is separated from the safety seat in the air after the safety seat is ejected;

[0054] The power device is used to eject the installed seat out of the EVTOL and provide flight power for the safety seat in the air. After receiving the flight control command, the power device provides the corresponding flight power for the safety seat, and the attitude signal of the power device is simultaneously transmitted to the system processing module to adjust the flight command at any time;

[0055] Infrared detector, used to detect the surrounding environment of EVTOL;

[0056] Terrain database, used to store terrain data of the EVTOL flight area;

[0057] The system processing module is used to generate a safety seat projection instruction and send it to the safety seat after receiving the flight data sent by the EVTOL avionics system, the EVTOL surrounding environment obtained by the infrared detector, and the terrain data stored in the terrain database. The system processing module interacts with the EVTOL avionics system and other modules of the EVTOL safety seat system;

[0058] Alarm module, used to send the location information of the safety seat,

[0059] Wherein, the system processing module, the infrared detector, the power device and the alarm module are connected to the airbag.

[0060] In some embodiments, the system further includes a safety seat controller and a safety battery.

[0061] The safety seat controller is used to manually control the launch function of the safety seat, and the safety seat controller simultaneously transmits the active launch signal to the system processing module to calculate the launch angle;

[0062] The safety battery is used to provide emergency power supply for the system processing module, which refers to the power supply of the system processing module in the air or in the event of other power failures. The safety battery and the EVTOL power supply system are independent of each other to achieve power supply safety for the safety seat.

[0063] In some embodiments, the system further includes a transmission device, which is used to adjust the position of the safety seat in the EVTOL so that the safety seat is located in the ejection position. In the above embodiment, a moving space for the safety seat is provided inside the EVTOL, and the transmission device transmits the safety seat from the normal position to the launch position and adjusts it to the launch posture after receiving the transmission instruction issued by the system processing module.

[0064] In some embodiments, the power device includes a posture sensor installed in the middle of the airbag and a plurality of jet devices installed around the airbag.

[0065] The posture sensing device is used to measure the posture of the safety seat in real time and transmit the posture data to the system processing module;

[0066] The jet device is used to provide flight power for the safety seat and adjust the flight posture.

[0067] In some embodiments, the power device further includes four active flight wings for actively manipulating the flight path, and the active flight wings include active flight wing jet devices for providing flight power and control buttons for adjusting the magnitude of the flight power. The active flight wings are wing-shaped structures, and the passenger's limbs and the active flight wings are calibrated and installed while the passenger wears a safety belt, so that after ejection, the passenger can actively control the flight path and flight power of the active flight wings according to the operation of the limbs. At this time, the control buttons are set at the hand position to facilitate the passenger's operation.

[0068] In some embodiments, the airbag is equipped with a plurality of laser positioning emitting devices, which are used to continuously emit laser beams to the safe landing coordinate point area after the safety seat is projected into the air. The laser beams are used for visual reference by passengers.

[0069] The working process of the EVTOL safety seat system provided in the above embodiment is as follows:

[0070] Step 1: The EVTOL safety seat system continuously monitors the EVTOL status and the safety seat controller status.

[0071] Step 2: If the EVTOL safety seat system receives a command from a passenger to start the projection program, or the EVTOL avionics data indicates a dangerous state such as stall, power failure, structural failure, etc., the projection program is started. If the above situation does not occur, monitoring is continued.

[0072] Step 3: After the launch procedure is initiated, the transmission device transfers the seat to the launch safety area.

[0073] Step 4: The safety seat system control algorithm calculates the projection command based on the terrain database data and EVTOL avionics data.

[0074] Step 5: The transmission device adjusts the safety seat system according to the projection instruction and rotates it to a safe projection angle.

[0075] Step 6: The power device implements the projection of the safety seat system according to the projection instruction.

[0076] Step 7: The safety seat system separates from the passenger seat and transmission in mid-air.

[0077] Step 8: The safety seat system deploys the airbag.

[0078] Step 9: The safety seat system calculates the flight control instructions and controls the flight path of the safety seat system through the power unit.

[0079] Step 10: After the safety seat system lands, it sends a rescue command to the rescue station.

[0080] In some embodiments, a method for projecting an EVTOL safety seat is provided, the method comprising the following steps:

[0081] S1: Determine whether projection is needed;

[0082] S2: The system processing module calculates / sets the projection energy;

[0083] S3: The power device projects the safety seat according to the preset energy:

[0084] S4: The safety seat separates from the main structure of the seat in the air and deploys the airbag:

[0085] S5: The system continues to calculate flight control instructions;

[0086] S6: The power device controls the safety seat airbag to fly and land according to the flight control command; or the passenger controls the safety seat airbag to fly and land according to the active flight wing of the power device operated by the passenger;

[0087] S7: The alarm module sends the safety seat airbag landing position to the rescue station.

[0088] In some embodiments, in S2: in order to minimize the vertical speed of the object when it lands, the vertical energy during the initial launch should offset the initial vertical kinetic energy of the safety seat and the passenger. Therefore, the calculation method of the Z-axis projected energy is as follows:

[0089]

[0090] Wherein, P0z is the projected energy in the z direction, W is the total weight of the safety seat and the passenger, V0z is the speed of the safety seat in the z-axis direction before projection, and the z-axis direction refers to the vertical direction;

[0091] The calculation method of the projected energy in the x-axis direction is as follows:

[0092]

[0093] Among them, P0x is the projected energy in the x-direction, V0x is the x-axis speed of the safety seat before projection, Dx is the x-axis distance from the safety coordinate point, and the x-axis is the north direction;

[0094] The calculation method of the projected energy in the y-axis direction is as follows:

[0095]

[0096] Among them, P0y is the projected energy in the y direction, V0y is the y-axis speed of the safety seat before projection, Dy is the y-axis distance from the safety coordinate point, and the y-axis direction is east.

[0097] In the above embodiment, the safety seat initial velocity components V0x, V0y, and V0z are obtained from the EVTOL avionics system.

[0098] In some embodiments, in S2: the functional relationship between the falling time Tz and the falling distance Dz is as follows:

[0099]

[0100] Where Dz is the z-axis distance from the safety coordinate point, W f is the weight of the safety seat after the seat body is separated and the sum of the passenger's weight, g is the acceleration of gravity, k is the air resistance coefficient, Tz is the falling time of the safety seat, where ln is a logarithmic function and cosh is a double cosine function.

[0101] In some embodiments, the calculation principle of the "flight control instruction" in the safety seat system control algorithm is as follows:

[0102] 1. Use geographic coordinate system: north (x-axis), east (y-axis), ground (z-axis);

[0103] 2. According to the position information sent by the alarm system, the current position is detected in real time and the current real-time speed V1x, V1y, and V1z are calculated. V1x, V1y, and V1z are the components of the real-time speed of the safety seat system in the air on the x-axis, y-axis, and z-axis respectively;

[0104] 3. Obtain the deviation values ​​Ax, Ay, and Az from the ideal posture according to the posture information sent by the power device, where Ax, Ay, and Az are the deviation values ​​of the safety seat system's posture in the air from the ideal posture on the x-axis, y-axis, and z-axis, respectively;

[0105] 4. The power unit x-axis control command drives the power unit to make V1x follow and approach V0x;

[0106] 5. The y-axis control command of the power device drives the power device to make V1y follow and approach V0y;

[0107] 6. The expected vertical landing speed Vd is,

[0108]

[0109] Among them, tanh is the hyperbolic sine function;

[0110] 7. The z-axis control command of the power unit drives the power unit so that V1z is not greater than the expected landing speed Vd.

[0111] In some embodiments, the flight control instructions in S5 change with time and position. That is, the flight control instructions calculate the expected x-axis and y-axis speeds according to the position deviation of the passenger and system and the expected safe landing point and the remaining landing time, and send control instructions to keep following the expected x-axis and y-axis speeds.

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An EVTOL safety seat system, characterized in that: The system comprises: A safety seat for passengers, comprising a seat body and an airbag for protecting passengers, wherein the airbag is separated from the safety seat in the air after the safety seat is ejected; A power device, used for ejecting the safety seat out of the EVTOL and providing flight power for the safety seat to fly in the air; Infrared detector, used to detect the surrounding environment of EVTOL; Terrain database, used to store terrain data of the EVTOL flight area; The system processing module is used to generate a safety seat projection instruction and send it to the safety seat after receiving the flight data sent by the EVTOL avionics system, the EVTOL surrounding environment obtained by the infrared detector and the terrain data stored in the terrain database; Alarm module, used to send the location information of the safety seat, Wherein, the system processing module, the infrared detector, the power device and the alarm module are connected to the airbag. The power device includes a posture sensor installed in the middle of the airbag and a plurality of jet devices installed around the airbag. The posture sensor is used to measure the posture of the safety seat in real time and transmit the posture data to the system processing module; The jet device is used to provide flight power for the safety seat and adjust the flight attitude. The power device also includes four active flight wings for actively controlling the flight track, and the active flight wings include active flight wing jet devices for providing flight power and control buttons for adjusting the size of the flight power. The system further includes a transmission device for adjusting the position of the safety seat in the EVTOL so that the safety seat is located at the ejection position.

2. The EVTOL safety seat system according to claim 1, characterized in that: The system also includes a safety seat controller and a safety battery, The safety seat controller is used to manually control the ejection function of the safety seat; The safety battery is used to provide emergency power supply for the system processing module.

3. The EVTOL safety seat system according to claim 1, characterized in that: The airbag is equipped with a plurality of laser positioning and emitting devices, which are used to continuously emit laser beams to the safe landing coordinate point area after the safety seat is projected into the air.

4. An EVTOL safety seat projection method, characterized in that: The projection method uses the safety seat system according to any one of claims 1 to 3, and the method comprises the following steps: S1: Determine whether projection is needed; S2: The system processing module calculates / sets the projection energy; S3: The power device projects the safety seat according to the preset energy: S4: The safety seat separates from the main structure of the seat in the air and deploys the airbag: S5: The system continues to calculate flight control instructions; S6: The power device controls the safety seat airbag to fly and land according to the flight control command; or the passenger controls the safety seat airbag to fly and land according to the active flight wing of the power device operated by the passenger; S7: The alarm module sends the safety seat airbag landing position to the rescue station.

5. The safety seat projection method according to claim 4, characterized in that: In S2, the calculation method of the projected energy in the Z-axis direction is as follows: Wherein, P0z is the projected energy in the z direction, W is the total weight of the safety seat and the passenger, V0z is the speed of the safety seat in the z-axis direction before projection, and the z-axis direction refers to the vertical direction; The calculation method of the projected energy in the x-axis direction is as follows: Among them, P0x is the projected energy in the x-direction, V0x is the x-axis speed of the safety seat before projection, Dx is the x-axis distance from the safety coordinate point, the x-axis is the north direction, and Tz is the falling time of the safety seat; The calculation method of the projected energy in the y-axis direction is as follows: Among them, P0y is the projected energy in the y direction, V0y is the y-axis speed of the safety seat before projection, Dy is the y-axis distance from the safety coordinate point, and the y-axis direction is east.

6. The safety seat projection method according to claim 4, characterized in that: In S2, the functional relationship between the falling time Tz and the falling distance Dz is as follows: Where Dz is the z-axis distance from the safety coordinate point, W f It is the weight of the safety seat after the seat body is separated and the sum of the passenger's weight, g is the acceleration of gravity, k is the air resistance coefficient, and Tz is the falling time of the safety seat.

7. The safety seat projection method according to claim 4, characterized in that: The flight control instructions in S5 change at any time with the change of time and position.

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