A front cover deforming device, control system, and method

Abstract

The application provides a front cover deformation device, a control system and a method, wherein the front cover deformation device comprises: a front cover inner plate fixedly connected to a vehicle body, a plurality of front cover modules arranged opposite to the front cover inner plate, the plurality of front cover modules being spliced to form a front cover outer plate, a plurality of buffer assemblies connected between each of the front cover modules and the front cover inner plate, and a support assembly connected between each of the front cover modules and the front cover inner plate and used for adjusting the distance and the angle between the front cover modules and the front cover inner plate, the support assembly comprising a fixed unit mounted on the front cover module, an extension unit mounted on the front cover inner plate, a first connecting piece mounted on the fixed unit, and a second connecting piece mounted on the end of the extension unit; and a deformation controller can drive the support assembly to move so as to adjust the distance and the angle between the front cover modules and the front cover inner plate, realize the switching of different target shapes of the front cover of the vehicle, and actively deform to change the style of the vehicle.

Description

Technical Field

[0001] This invention relates to the field of automotive body technology, and specifically to a front hood deformation device, control system, and method. Background Technology

[0002] The front hood of a car, also known as a car engine cover, is used to cover the engine compartment. In the event of a car-pedestrian collision, pedestrians are prone to hard contact with the hood, resulting in injury or death. Furthermore, existing hood designs have some shortcomings. For example, a proposed front hood design that balances rigidity and active pedestrian protection includes an inner hood panel and an outer hood panel positioned above the inner panel. A cavity exists between the inner and outer hood panels, containing multiple variable stiffness support mechanisms. Each variable stiffness support mechanism includes an elastic support member, a rack, and a locking assembly. The lower end of the elastic support member is connected to the inner hood panel, and the upper and lower ends of the rack are connected to the outer hood panel and the elastic support member, respectively. The locking assembly includes a mounting bracket, a gear-ratchet complex, a pawl, and a drive assembly. This design, by incorporating multiple variable stiffness support mechanisms between the inner and outer hood panels and using collision sensors to detect impending pedestrian collisions, can buffer and absorb energy during a collision, providing active pedestrian protection. However, while the aforementioned car hood can protect pedestrian safety, it cannot actively deform to change the vehicle's style, thus failing to meet users' needs. Summary of the Invention

[0003] One objective of this invention is to provide a front hood deformation device to solve the technical problem in the prior art that the front hood of a car can not only protect pedestrian safety but also actively deform to change the style of the vehicle; another objective is to provide a front hood deformation control system that can deform the front hood of a car according to deformation commands to change the style of the vehicle and take pedestrian protection measures according to collision commands; a third objective is to provide a front hood deformation control method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A front cover deformation device, comprising:

[0006] The inner panel of the front hood is fixedly connected to the car body;

[0007] A front cover module is arranged opposite to the inner front cover panel, and there are multiple front cover modules. Multiple front cover modules are spliced ​​together to form the outer front cover panel.

[0008] A buffer assembly is provided, which is connected between each of the front cover modules and the inner front cover panel, and there are multiple such assemblies.

[0009] A support assembly is connected between each of the front cover modules and the inner front cover panel and is used to adjust the distance and angle between them; the support assembly includes a fixing unit installed on the front cover module, a telescopic unit installed on the inner front cover panel, a first connector installed on the fixing unit, and a second connector installed at the end of the telescopic unit. When the first connector and the second connector are connected, the front cover module is supported by the support assembly; when the first connector and the second connector are separated, the front cover module is supported by a buffer assembly.

[0010] The deformation controller is fixed to the inner panel of the front cover and is signal-connected to the body controller, the first connector, the second connector, and the telescopic unit.

[0011] According to the above-mentioned technical means, the outer front hood panel is composed of multiple front hood modules spliced ​​together, and each front hood module and the inner front hood panel are provided with a support component. Therefore, when the first connecting piece and the second connecting piece are connected and the front hood module is supported by the support component, under the action of the body controller, the deformation controller drives the support component to move, thereby adjusting the distance and angle between the front hood module and the inner front hood panel, realizing the switching of different target shapes of the car front hood, and actively deforming to change the vehicle style; it can also control the first connecting piece and the second connecting piece to separate before the vehicle collides with a pedestrian. At this time, the front hood module is supported by the buffer component, thereby using the buffer component connected between the front hood module and the inner front hood panel to reduce the impact of the outer front hood panel on the pedestrian, thereby protecting the safety of the pedestrian, and can meet different needs.

[0012] Furthermore, the fixing unit includes: a mounting sleeve with an internal mounting hole and a ball head pin movably installed inside the mounting hole. The mounting sleeve is fixedly installed on the front cover module. The ball head pin has a notch at one end away from the mounting sleeve, and the end of the telescopic unit is movably inserted into the notch.

[0013] Based on the above technical means, due to the use of ball head pins and mounting sleeves for installation, when multiple telescopic units extend or retract to different lengths, the angle of the connected front cover module relative to the inner front cover panel can change.

[0014] Furthermore, one of the first connector and the second connector is an electromagnetic component that is signal-connected to the deformation controller, and the other is a magnetic component; or both the first connector and the second connector are electromagnetic components that are signal-connected to the deformation controller.

[0015] Based on the above technical means, the front cover module and the inner front cover panel can be fixed or detached under the action of the deformation controller, so as to realize the release and restoration of the support of the front cover module and the inner front cover panel, providing a basis for detachment when the vehicle collides with the pedestrian.

[0016] A front cover deformation control system for controlling the aforementioned front cover deformation module, comprising:

[0017] The signal acquisition module is used to acquire user intent signals and pedestrian distance signals, and transmit the acquired user intent signals and pedestrian distance signals to the vehicle system module;

[0018] The vehicle system module is connected to the signal acquisition module and the body controller signal. It is used to identify user intention signals through a basic general model and output deformation commands to the body controller based on the identification results; to compare pedestrian distance signals with the current braking distance of the vehicle and output collision commands to the body controller based on the comparison results; and to upload user intention signals and vehicle driving process data to the cloud system module after the trip ends.

[0019] The deformation controller is signal-connected to the vehicle body controller and is used to receive deformation commands and control the connection between the first connector and the second connector, control each telescopic unit to extend or retract to the target length, and receive collision commands to control the separation of the first connector and the second connector and the detachment of the telescopic unit from the fixed unit.

[0020] The cloud system module is used to learn, train, and calibrate the user intent signals uploaded by the vehicle system module, thereby iterating and optimizing the basic general model before sending it back to the vehicle system module.

[0021] Based on the aforementioned technical means, a deformation controller is used to control each telescopic unit to extend or retract to a target length, thereby achieving active deformation of the car's front hood. The vehicle's infotainment system module can compare pedestrian distance signals with the vehicle's current braking distance. When a pedestrian collision risk is detected, a corresponding collision command is output to the vehicle's body controller. The deformation controller then controls the separation of the first and second connecting parts, thereby causing the telescopic units to detach from the fixed units. At this point, a buffer assembly located between the front hood module and the inner panel of the front hood reduces pedestrian injury during a collision. Therefore, the car's front hood can be deformed according to the deformation command to change the vehicle's style, and pedestrian protection measures can be taken according to the collision command, thus improving pedestrian safety.

[0022] Furthermore, the signal acquisition module includes at least:

[0023] The in-vehicle acquisition unit includes an in-vehicle microphone and an in-vehicle camera, used to capture the user's voice signals, facial signals and body signals in real time while in the vehicle.

[0024] The external acquisition unit includes an external microphone and an in-vehicle surround-view camera, used to capture the user's voice signals, facial signals, body signals, and pedestrian distance signals in real time when the user is outside the vehicle.

[0025] Based on the above-mentioned technical means, by using in-vehicle and out-of-vehicle acquisition units, it is convenient to collect voice signals, facial signals and body signals of users inside and outside the vehicle. At the same time, pedestrian distance signals can also be collected, providing a basis for judging when a vehicle is about to collide with a pedestrian.

[0026] Furthermore, it also includes: a pressure sensing module disposed on the inner panel of the front cover near the front cover module and connected to the vehicle infotainment system module via signal, wherein the vehicle infotainment system module is used to determine the pressure value of the pressure sensing module and output a collision termination command to the body controller based on the determination result.

[0027] Based on the above technical means, the pressure value between the front cover module and the inner panel of the front cover is detected by the pressure sensing module, and the vehicle system module determines that the collision between the pedestrian and the front cover module has ended.

[0028] A method for controlling the deformation of a front hood, based on the aforementioned front hood deformation control system, includes:

[0029] Step S1: The signal acquisition module collects user intent signals and pedestrian distance signals in real time, and transmits the collected signals to the vehicle system module;

[0030] Step S2: The vehicle system module identifies the user's intent signal and outputs the deformation command corresponding to the user's pre-set intent signal to the body controller based on the identification result. It compares and judges the pedestrian distance signal and braking distance and outputs the corresponding collision command to the body controller based on the judgment result.

[0031] Step S3: According to the deformation command of the vehicle system module, the deformation controller controls the first connector to connect with the second connector and controls each telescopic unit to extend or retract to the target length. According to the collision command of the vehicle system module, the deformation controller controls the first connector to separate from the second connector and the telescopic unit to detach from the fixed unit.

[0032] Step S4: After the trip is completed, the vehicle system module recognizes that the user has left the vehicle sensing area. It first determines whether the first connector, the second connector and the telescopic unit have been reset to their initial state. If yes, it directly executes step S5. If no, it first controls the first connector, the second connector and the telescopic unit to be reset to their initial state, and then executes step S5.

[0033] Step S5: The vehicle system module uploads the user intent signals and vehicle driving data from this trip to the cloud system module, iteratively learns the basic model, and then sends the data back to the vehicle system module to complete the switching of user intent signals.

[0034] Based on the aforementioned technical means, the car's front hood can be deformed according to deformation commands to change the vehicle's style. The vehicle's infotainment system module can also compare pedestrian distance signals and braking distances to determine if a collision with a pedestrian is imminent. Before a collision occurs, a collision command is sent to the vehicle's control unit, and the deformation controller separates the first and second connecting parts, detaching the telescopic unit from the fixed unit. This utilizes a buffer assembly to reduce the impact of the car's front hood on pedestrians; and pedestrian protection measures are implemented based on the collision command, thereby improving pedestrian safety.

[0035] Furthermore, in step S2,

[0036] The user intent signal includes the user's voice signal, facial signal, and body signal;

[0037] The pedestrian distance signal is the straight-line distance between the vehicle-mounted surround-view camera and the pedestrian object in front;

[0038] The process of comparing and judging pedestrian distance signals and braking distances, and then outputting corresponding collision commands to the vehicle controller based on the judgment results includes:

[0039] Obtain the straight-line distance D1 between the vehicle's surround-view camera and the pedestrian object in front;

[0040] Calculate the vehicle's current braking distance D;

[0041] Compare D with D1; when D≥D1, it is determined that the vehicle is about to collide with the pedestrian, and the vehicle system module outputs the corresponding collision command to the body controller; otherwise, it is determined that there is no risk of collision.

[0042] Where D = v / a, a = μ1x * μ2z, a is the current braking acceleration of the vehicle, μ1 and μ2 are constants, x is the tire performance parameter, z is the braking performance parameter, and v is the current speed of the vehicle.

[0043] Based on the above technical means, when there is a risk of collision, the corresponding collision command is sent to the vehicle body controller, and the deformation controller is used to control the first and second connecting parts, thereby improving the safety of pedestrians when a collision occurs.

[0044] Furthermore, in step S2, the vehicle system module identifies user intent signals by: training and labeling the user's body movements and facial expressions based on a pre-stored image recognition model, training and labeling the user's voice signals based on a pre-stored GLM language model, and then iteratively optimizing them.

[0045] Based on the aforementioned technical means, a pre-stored basic general model is used to identify the user's body movements, facial expressions, and voice signals in order to obtain the user's true intentions.

[0046] Furthermore, step S2 also includes: after a collision occurs, the vehicle system module receives the pressure value transmitted by the pressure sensing module, compares the pressure value with the preset pressure value, and when the pressure received by each pressure sensing module is less than the preset value, the vehicle system module determines that the vehicle collision has ended and outputs a collision end command to the body controller. The body controller transmits the collision end command to the deformation controller, and the deformation controller controls the first connecting member, the second connecting member and the telescopic unit to reset to the initial state.

[0047] Based on the above technical means, a pressure sensing module is used to collect the pressure at the end of the collision, and the vehicle system module judges it, so that the front cover of the car can be restored after the collision.

[0048] The beneficial effects of this invention are:

[0049] (1) The front cover outer panel of the present invention is composed of multiple front cover modules spliced ​​together, and each front cover module and the front cover inner panel are provided with a support component. Therefore, when the first connector and the second connector are connected and the front cover module is supported by the support component, under the action of the vehicle body controller, the deformation controller drives the support component to move, thereby adjusting the distance and angle between the front cover module and the front cover inner panel, realizing the switching of different target shapes of the car front cover, and actively deforming to change the vehicle style; it can also control the first connector and the second connector to separate before the vehicle collides with the pedestrian. At this time, the front cover module is supported by the buffer component, thereby using the buffer component connected between the front cover module and the front cover inner panel to reduce the impact of the front cover outer panel on the pedestrian, thereby protecting the safety of the pedestrian, and meeting different needs.

[0050] (2) This invention utilizes a signal acquisition module to collect user intent signals and pedestrian distance signals in real time within the vehicle's sensing area. Upon acquiring the user intent signal, the system uses a pre-stored basic general model to identify it, finds the corresponding deformation command, and sends it to the vehicle body controller. This allows the vehicle's front grille to deform according to the deformation command, thus changing the vehicle's style. The system can also compare pedestrian distance signals and braking distances to determine if a collision with a pedestrian is imminent. Before a collision occurs, a collision command is sent to the vehicle body controller, and the deformation controller separates the first and second connecting parts, detaching the telescopic unit from the fixed unit. This reduces the impact of the front grille on pedestrians using a buffer component; pedestrian protection measures are implemented based on the collision command, improving pedestrian safety. The cloud system module receives user intent signals and vehicle driving data, and iteratively learns the basic model to update and switch user intent signals for future use. Attached Figure Description

[0051] Figure 1 This is a three-dimensional structural diagram of a front cover deformation device according to the present invention;

[0052] Figure 2 This is a schematic diagram of the structure of the outer front cover plate of a front cover deformation device according to the present invention;

[0053] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0054] Figure 4 This is a side view of a front cover deformation device according to the present invention;

[0055] Figure 5 This is a structural diagram of the connection between the fixing unit and the telescopic unit of a front cover deformation device according to the present invention;

[0056] Figure 6 for Figure 5 Sectional view of AA;

[0057] Figure 7 This is a schematic diagram of the installation of the first and second connecting members of a front cover deformation device according to the present invention.

[0058] Figure 8 This is a schematic diagram of a front cover deformation control system according to the present invention;

[0059] Figure 9 This is a schematic flowchart of the front cover deformation control method of the present invention;

[0060] Figure 10 This is a schematic diagram of the vehicle sensing area in a front hood deformation control system according to the present invention;

[0061] Figure 11 This is a flowchart of a front cover deformation control method according to a specific embodiment.

[0062] Among them, 1-inner front cover panel; 2-outer front cover panel; 21-front cover module; 3-fixing unit; 31-mounting sleeve; 32-ball pin; 33-notch; 34-gap; 4-telescopic unit; 5-deformation controller; 6-buffer assembly; 7-pressure sensing module; 8-first electromagnet; 9-second electromagnet. Detailed Implementation

[0063] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0064] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0065] This embodiment proposes a front cover deformation device, such as... Figures 1-6 As shown, it includes:

[0066] Front hood inner panel 1 is fixedly connected to the car body;

[0067] A front cover module 21 is arranged opposite to the inner front cover panel 1, and there are multiple front cover modules 21 spliced ​​together to form the outer front cover panel 2.

[0068] A buffer assembly 6 is connected between each of the front cover modules 21 and the inner front cover plate 1, and there are multiple such assemblies;

[0069] A support assembly is connected between each of the front cover modules 21 and the inner front cover panel 1 and is used to adjust the distance and angle between them; the support assembly includes a fixing unit 3 installed on the front cover module 21, a telescopic unit 4 installed on the inner front cover panel 1, a first connector installed on the fixing unit 3, and a second connector installed at the end of the telescopic unit 4. When the first connector and the second connector are connected, the front cover module 21 is supported by the support assembly. When the first connector and the second connector are separated, the front cover module 21 is supported by the buffer assembly 6.

[0070] The deformation controller 5 is fixed to the inner panel 1 of the front cover and is signal connected to the body controller, the first connector, the second connector, and the telescopic unit 4.

[0071] It can be seen that the outer front panel 2 is composed of multiple front panel modules 21 spliced ​​together, and each front panel module 21 and the inner front panel 1 are provided with a support component. Therefore, when the first connector and the second connector are connected and the front panel module 21 is supported by the support component, under the action of the body controller, the deformation controller 5 drives the support component to move, thereby adjusting the distance and angle between the front panel module 21 and the inner front panel 1, realizing the switching of different target shapes of the car front panel, and actively deforming to change the vehicle style; it can also control the first connector and the second connector to separate before the vehicle collides with the pedestrian. At this time, the front panel module 21 is supported by the buffer component 6, thereby using the buffer component 6 connected between the front panel module 21 and the inner front panel 1 to reduce the impact of the outer front panel 2 on the pedestrian, thereby protecting the safety of the pedestrian and meeting different needs.

[0072] Specifically, the fixing unit 3 and the telescopic unit 4 are connected by the first connector and the second connector, which can fix or separate the two to restore or release the support between the front cover module 21 and the front cover inner panel 1. Thus, when the first connector and the second connector are connected and the front cover module 21 is supported by the support assembly, the telescopic unit 4 facilitates the movement or rotation of the front cover module 21 relative to the front cover inner panel 1.

[0073] In actual operation, the telescopic unit 4 can be set at the corner of the front cover module 21, and there can be multiple units. Therefore, when multiple telescopic units 4 extend and retract by the same length simultaneously, multiple front cover modules 21 are moved equidistantly relative to the inner front cover panel 1. In addition, multiple telescopic units 4 can extend and retract by different lengths in sequence along a preset direction, thereby causing the front cover module 21 to flip at different angles in different directions, thus realizing the change of the style of the outer front cover panel 2 of the car.

[0074] In one scenario of this embodiment, such as Figure 1 and Figure 2 As shown, the front cover module 21 can be configured as a quadrilateral, and the telescopic unit 4 is located at each corner of the front cover module 21.

[0075] It should be noted that, in order to avoid deformation of the front cover module 21 when the telescopic units 4 located at different corners extend or retract at different lengths, the multiple telescopic units 4 generally extend or retract at different lengths in sequence along a preset direction during adjustment. For example, the extension or retraction length along a certain direction is gradually reduced or gradually increased to ensure the stability of the front cover outer panel 2 during the adjustment process.

[0076] It can be seen that by setting the front cover module 21 into a quadrilateral shape, multiple front cover modules 21 are spliced ​​together in sequence to form a complete front cover outer panel 2, ensuring that the front cover module 21 can be flipped and translated in different directions. Since the telescopic unit 4 is set at each corner of the front cover module 21, each corner is supported, which can facilitate the smooth deformation of each front cover module 21 while ensuring stability.

[0077] For example, in this embodiment, the front cover module 21 is used to facilitate the division of the shape of the entire front cover outer panel 2. In actual operation, the front cover module 21 can be set as a rhomboid or quadrilateral plate to splice together to form the front cover outer panel 2. Therefore, the specific shape and splicing method of the front cover module 21 are not restrictive provisions.

[0078] Furthermore, such as Figures 3-6 As shown, the fixing unit 3 includes: a mounting sleeve 31 with an internal mounting hole and a ball head pin 32 movably installed inside the mounting hole. The mounting sleeve 31 is fixedly installed on the front cover module 21. The ball head pin 32 has a notch 33 at one end away from the mounting sleeve 31. The end of the telescopic unit 4 is movably inserted into the notch 33.

[0079] It can be seen that the ball-head pin 32 can be easily installed inside the mounting sleeve 31 with mounting holes, and the notch 33 at the other end of the ball-head pin 32 can be connected to the telescopic unit 4. In use, the telescopic unit 4 drives the front cover module 21 to move relative to the inner front cover plate 1. In addition, due to the installation method of ball-head pin 32 and mounting sleeve 31, when multiple telescopic units 4 extend and retract to different lengths, the angle of the connected front cover module 21 relative to the inner front cover plate 1 can be changed.

[0080] Furthermore, the bottom end of the mounting sleeve 31 is provided with a notch 34, which facilitates the circular end of the ball head pin 32 to pass through the notch 34 and be movably installed inside the mounting hole.

[0081] In one scenario of this embodiment, such as Figure 6 As shown, one of the first connector and the second connector is an electromagnetic component that is signal-connected to the deformation controller 5, and the other is a magnetic component; or both the first connector and the second connector are electromagnetic components that are signal-connected to the deformation controller 5.

[0082] It should be noted that by setting the first connector and the second connector as electromagnetic components and magnetic attraction components respectively, or both as electromagnetic components, it is convenient to drive the front cover module 21 and the front cover inner panel 1 to be fixed or detached under the action of the deformation controller 5; so as to realize the release and restoration of the support of the front cover module 21 and the front cover inner panel 1, providing a basis for detachment when the vehicle collides with the pedestrian.

[0083] For example, the telescopic unit 4 can be a telescopic rod, or it can be an electric cylinder or a hydraulic cylinder, as long as it can drive the first connecting member and the second connecting member to connect and support the front cover module 21 and the front cover inner plate 1 to change the distance or angle between them. This embodiment does not make specific limitations here. In addition, in addition to using the fixing unit 3 to connect with the front cover inner plate 1 or the front cover module 21, the telescopic unit 4 can also be directly connected by a hinge. Therefore, the specific structure of the fixing unit 3 is not a restrictive provision.

[0084] For example, in practical applications, this embodiment may be used as follows: Figure 7 As shown, the first connector and the second connector can be respectively a first electromagnet 8 and a first electromagnet 8 located at one end of the fixed unit 3 and the telescopic unit 4. Alternatively, they can be an electromagnet and a metal block with magnetic attraction properties, as long as they can attract each other and thus connect or separate under the action of the deformation controller 5. Therefore, the specific structure of the first connector and the second connector is not a restrictive provision.

[0085] This embodiment also proposes a front cover deformation control system for controlling the aforementioned front cover deformation module, such as... Figure 8 ,include:

[0086] The signal acquisition module is used to acquire user intent signals and pedestrian distance signals, and transmit the acquired user intent signals and pedestrian distance signals to the vehicle system module;

[0087] The vehicle system module is connected to the signal acquisition module and the body controller signal. It is used to identify user intention signals through a basic general model and output deformation commands to the body controller based on the identification results; to compare pedestrian distance signals with the current braking distance of the vehicle and output collision commands to the body controller based on the comparison results; and to upload user intention signals and vehicle driving process data to the cloud system module after the trip ends.

[0088] The deformation controller 5 is connected to the vehicle body controller and is used to receive deformation commands and control the connection between the first connector and the second connector, control each telescopic unit 4 to extend or retract to the target length, and receive collision commands to control the separation of the first connector and the second connector and the disengagement of the telescopic unit 4 from the fixed unit 3.

[0089] The cloud system module is used to learn, train, and calibrate the user intent signals uploaded by the vehicle system module, thereby iterating and optimizing the basic general model before sending it back to the vehicle system module.

[0090] This invention utilizes a front hood deformation system. A signal acquisition module facilitates the collection of user intent signals and pedestrian distance signals, providing a signal basis for the vehicle infotainment system module's recognition and judgment. When the vehicle infotainment system module recognizes the deformation command corresponding to the user intent signal, it directly outputs the corresponding deformation command to the vehicle body controller. The deformation controller 5 then controls each telescopic unit 4 to extend or retract to the target length, achieving active deformation of the car's front hood. The vehicle infotainment system module can compare the pedestrian distance signal with the vehicle's current braking distance. When a pedestrian collision risk is detected, a corresponding collision command is output to the vehicle body controller. The deformation controller 5 then controls the separation of the first and second connecting parts, causing the telescopic unit 4 to detach from the fixed unit 3. At this point, the buffer assembly 6 located between the front hood module 21 and the inner front hood panel 1 reduces pedestrian injury during a collision. Therefore, the system can both deform the car's front hood according to the deformation command to change the vehicle's style and implement pedestrian protection measures according to the collision command, thus improving pedestrian safety.

[0091] Furthermore, the signal acquisition module includes at least:

[0092] The in-vehicle acquisition unit includes an in-vehicle microphone and an in-vehicle camera, used to capture the user's voice signals, facial signals and body signals in real time while in the vehicle.

[0093] The vehicle exterior acquisition unit includes an exterior microphone and an in-vehicle surround-view camera, used to capture the user's voice signals, facial signals, body signals, and pedestrian distance signals in real time when the user is outside the vehicle.

[0094] It can be seen that by using in-vehicle and out-of-vehicle acquisition units, it is convenient to collect voice signals, facial signals and body signals of users inside and outside the vehicle. At the same time, it can also collect pedestrian distance signals, providing a basis for judging when the vehicle is about to collide with a pedestrian.

[0095] Furthermore, it also includes: a pressure sensing module 7 located on the side of the inner panel 1 of the front cover near the front cover module 21 and connected to the vehicle infotainment system module via signal. The vehicle infotainment system module is used to determine the pressure value of the pressure sensing module 7 and output a collision termination command to the body controller based on the determination result.

[0096] For example, the buffer assembly 6 can be multiple springs or compression springs fixed between the front cover module 21 and the front cover inner panel 1. In actual operation, the buffer assembly 6 can be located next to each telescopic unit 4 and correspond one-to-one with each telescopic unit 4. The pressure sensing module 7 can be a pressure sensor fixed on the front cover inner panel 1. After the front cover module 21 and the front cover inner panel 1 are separated, the pressure sensor detects the pressure value between the front cover module 21 and the front cover inner panel 1, and the vehicle system module determines that the collision between the pedestrian and the front cover module 21 has ended.

[0097] The present invention also provides a method for controlling the deformation of the front cover, such as... Figure 9 As shown, it includes:

[0098] Step S1: The signal acquisition module collects user intent signals and pedestrian distance signals in real time, and transmits the collected signals to the vehicle system module;

[0099] Step S2: The vehicle system module identifies the user's intent signal and outputs the deformation command corresponding to the user's pre-set intent signal to the body controller based on the identification result. It compares and judges the pedestrian distance signal and braking distance and outputs the corresponding collision command to the body controller based on the judgment result.

[0100] Step S3: According to the deformation command of the vehicle system module, the deformation controller 5 controls the first connector to connect with the second connector and controls each telescopic unit 4 to extend and retract to the target length. According to the collision command of the vehicle system module, the deformation controller 5 controls the first connector to separate from the second connector and the telescopic unit 4 to detach from the fixed unit 3.

[0101] Step S4: After the trip is completed, the vehicle system module recognizes that the user has left the vehicle sensing area. It first determines whether the first connector, the second connector and the telescopic unit 4 have been reset to their initial state. If yes, it directly executes step S5. If no, it first controls the first connector, the second connector and the telescopic unit 4 to be reset to their initial state, and then executes step S5.

[0102] Step S5: The vehicle system module uploads the user intent signals and vehicle driving data from this trip to the cloud system module, iteratively learns the basic model, and then sends the data back to the vehicle system module to complete the switching of user intent signals.

[0103] In practical application, this embodiment utilizes a signal acquisition module to collect user intent signals and pedestrian distance signals in real time within the vehicle's sensing area. Upon acquiring the user intent signal, the vehicle system module uses a pre-stored basic general model to identify it, finds the corresponding deformation command, and sends it to the vehicle body controller. This allows the vehicle's front grille to deform according to the deformation command, changing the vehicle's style. The vehicle system module can also compare pedestrian distance signals and braking distances to determine if a collision is imminent. Before a collision, it sends a collision command to the vehicle body controller, and the deformation controller 5 controls the separation of the first and second connecting parts, and the detachment of the telescopic unit 4 from the fixed unit 3. This utilizes the buffer component 6 to reduce the impact of the vehicle's front grille on pedestrians; pedestrian protection measures are taken based on the collision command, thus improving pedestrian safety. The cloud system module receives user intent signals and vehicle driving data, and iteratively learns the basic model to update and switch user intent signals for future use.

[0104] It should be noted that the initial state refers to the following: the deformation controller 5 controls the connection of the first connector and the second connector, and each telescopic unit 4 extends to the same initial length, thereby keeping each front cover module 21 and the front cover inner panel 1 parallel to each other, thus forming a car front cover with the front cover inner panel 1 and the front cover outer panel 2 at equal distances.

[0105] Furthermore, prior to step S1, the vehicle infotainment system module needs to be activated. In this embodiment, the activation method can be specifically as follows: the vehicle infotainment system module is activated when the user enters the vehicle's sensing area with their signal device. The vehicle sensing area is specifically a circular area with the vehicle infotainment system module as the center and the maximum distance at which the module can sense the user's signal device as its radius. Figure 10 As shown.

[0106] It can be seen that by detecting the signal devices carried by the user, the vehicle system module is activated, and then the signal acquisition module is used to collect the user's intention signal and pedestrian distance signal in the vehicle's sensing area in real time.

[0107] It should be noted that the signal device can be a car owner carrying a key, a mobile phone bound to the vehicle's infotainment system module, or a vehicle-sensing item such as a wristband or glasses. Of course, the vehicle's infotainment system module can also be activated by remotely controlling the signal device. Therefore, the specific form of the signal device is not a limiting provision of this embodiment.

[0108] Furthermore, in step S2,

[0109] The user intent signal includes the user's voice signal, facial signal, and body signal;

[0110] The pedestrian distance signal is the straight-line distance between the vehicle-mounted surround-view camera and the pedestrian object in front;

[0111] The process of comparing and judging pedestrian distance signals and braking distances, and then outputting corresponding collision commands to the vehicle controller based on the judgment results includes:

[0112] Obtain the straight-line distance D1 between the vehicle's surround-view camera and the pedestrian object in front;

[0113] Calculate the vehicle's current braking distance D;

[0114] Compare D with D1; when D≥D1, it is determined that the vehicle is about to collide with the pedestrian, and the vehicle system module outputs the corresponding collision command to the body controller; otherwise, it is determined that there is no risk of collision.

[0115] Where D = v / a, a = μ1x * μ2z, a is the current braking acceleration of the vehicle, μ1 and μ2 are constants, x is the tire performance parameter, z is the braking performance parameter, and v is the current speed of the vehicle.

[0116] It can be seen that the vehicle system module calculates the vehicle's current braking distance and the straight-line distance between the vehicle-mounted surround-view camera and the pedestrian in front. The two are compared to determine whether the vehicle poses a collision risk to the pedestrian. When there is a collision risk, the corresponding collision command is sent to the body controller, and the deformation controller 5 is used to control the first and second connecting parts to improve the safety of pedestrians when a collision occurs.

[0117] It should be noted that when making a judgment before a collision occurs, the vehicle's infotainment system module obtains tire performance parameters and braking performance parameters in real time, and calculates the current braking distance by combining the vehicle's current braking acceleration and speed. Then, it is compared with the pedestrian distance signal to determine the current collision risk between the vehicle and the pedestrian.

[0118] For example, in step S2, the vehicle system module recognizes the user's intent signal by: training and annotating the user's body movements and facial expressions based on a pre-stored image recognition model, training and annotating the user's voice signal based on a pre-stored GLM language model, and then iteratively optimizing it.

[0119] In another embodiment, step S2 further includes: after a collision occurs, the vehicle system module receives the pressure value transmitted by the pressure sensing module 7, compares the pressure value with a preset pressure value, and when the pressure received by each pressure sensing module 7 is less than the preset value, the vehicle system module determines that the vehicle collision has ended and outputs a collision end command to the body controller. The body controller transmits the collision end command to the deformation controller 5, and the deformation controller 5 controls the first connector, the second connector and the telescopic unit 4 to reset to the initial state.

[0120] Specifically, the pressure sensor module 7 is used to collect the pressure at the end of the collision, and the vehicle system module judges it. So that after the collision, when the pressure received by each pressure sensor module 7 is less than the preset value, the first connector, the second connector and the telescopic unit 4 are controlled to reset to the initial state, so that the front cover of the car is restored.

[0121] In actual operation of this embodiment, step S4, where the telescopic unit 4 drives the front cover module 21 to deform, specifically includes: the telescopic unit 4 controls each front cover module 21 to reach a preset distance and angle relative to the inner front cover panel 1 to form a preset front cover shape. By using multiple telescopic units 4 to extend and retract simultaneously, the distance and angle of each front cover module 21 relative to the inner front cover panel 1 can be adjusted to achieve the change of style of different style front cover modules 21. The operation process is relatively simple.

[0122] In actual operation of this embodiment, in step S5: the user intent signal in this trip includes the user intent action collected by the signal acquisition module; the vehicle driving data specifically includes: the pressure data detected by the pressure sensing module 7 and the speed data when the front cover module 21 and the front cover inner panel 1 separate; the data model deployed by the cloud system module calibrates and learns the user intent action, thereby continuously optimizing and iterating the basic model of the vehicle system module through remote OTA, so as to realize the learning and updating of user intent commands.

[0123] In summary, such as Figure 11As shown, the control method for front cover deformation in this embodiment can be specifically described as follows: A user carrying a signal device enters the vehicle's sensing area; the signal acquisition module is activated and continuously monitors; the vehicle system module identifies the user's intent signal based on a pre-deployed general model and transmits the deformation command to the body controller based on the identification result; after receiving the deformation signal, the body controller transmits the deformation signal to the deformation controller 5; after receiving the deformation signal, the deformation controller 5 uses the telescopic unit 4 to move each front cover module 21 relative to the inner front cover panel 1 to a specific distance and angle; during driving, the vehicle system module judges the pedestrian distance signal acquired by the signal acquisition module, and when it detects an impending collision between the vehicle and a pedestrian, it transmits a collision command to the body controller; after receiving the collision signal, the body controller transmits the collision signal to the deformation controller 5; the deformation controller 5 releases the support of the telescopic unit 4 on the front cover module 21 and the inner front cover panel 1 through the first and second connecting parts. The front hood module 21 is supported by the buffer assembly 6. The vehicle system module judges the data input by the pressure sensing module 7. When the pressure is less than the preset value, the vehicle system judges that the collision has ended and outputs a collision end command to the body controller. The body controller transmits the collision end signal to the deformation controller 5. The deformation controller 5 restores the support of the telescopic unit 4 for the front hood module 21 and the inner panel 1 of the front hood through the first connector and the second connector. After the stroke ends, the signal acquisition module continuously monitors the user. When the vehicle system module recognizes that the user has left the vehicle sensing area, it sends a signal to the body controller. After receiving the signal from the vehicle system, the body controller sends a signal to the deformation controller 5. The deformation controller 5 controls the first connector, the second connector and the telescopic unit 4 to reset to the initial state. After the stroke ends, the vehicle system module uploads the user intention signal and driving data to the cloud system module for training and calibration, and iterates and optimizes the basic model to complete the switching of user intention.

[0124] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A front cover deformation device, characterized in that, include: The inner panel of the front cover (1) is fixedly connected to the car body; The front cover module (21) is arranged opposite to the inner front cover panel (1) and there are multiple front cover modules (21) spliced ​​together to form the outer front cover panel (2). A buffer assembly (6) is connected between each of the front cover modules (21) and the front cover inner plate (1), and there are multiple such assemblies; A support assembly is connected between each of the front cover modules (21) and the inner front cover panel (1) and is used to adjust the distance and angle between them. The support assembly includes a fixing unit (3) installed on the front cover module (21), a telescopic unit (4) installed on the inner front cover panel (1), a first connector installed on the fixing unit (3), and a second connector installed at the end of the telescopic unit (4). When the first connector and the second connector are connected, the front cover module (21) is supported by the support assembly. Under the action of the telescopic unit (4), the front cover module (21) can be moved or rotated relative to the inner front cover panel (1). When the first connector and the second connector are separated, the front cover module (21) is supported by the buffer assembly (6). The deformation controller (5) is fixed to the inner panel (1) of the front cover and is signal connected to the body controller, the first connector, the second connector, and the telescopic unit (4).

2. The front cover deformation device according to claim 1, characterized in that, The fixing unit (3) includes: a mounting sleeve (31) with an internal mounting hole and a ball head pin (32) movably installed inside the mounting hole. The mounting sleeve (31) is fixedly installed on the front cover module (21). The ball head pin (32) has a notch (33) at one end away from the mounting sleeve (31). The end of the telescopic unit (4) is movably inserted into the notch (33).

3. A front cover deformation device according to claim 1 or 2, characterized in that, One of the first connector and the second connector is an electromagnetic component that is connected to the deformation controller (5) by signal, and the other of the two is a magnetic component; or both the first connector and the second connector are electromagnetic components that are connected to the deformation controller (5) by signal.

4. A front cover deformation control system for controlling the front cover deformation device according to any one of claims 1-3, characterized in that, include: The signal acquisition module is used to acquire user intent signals and pedestrian distance signals, and transmit the acquired user intent signals and pedestrian distance signals to the vehicle system module; The vehicle system module is connected to the signal acquisition module and the body controller signal. It is used to identify user intention signals through a basic general model and output deformation commands to the body controller based on the identification results; to compare pedestrian distance signals with the current braking distance of the vehicle and output collision commands to the body controller based on the comparison results; and to upload user intention signals and vehicle driving process data to the cloud system module after the trip ends. The deformation controller (5) is connected to the vehicle body controller and is used to receive deformation commands and control the connection between the first connector and the second connector, control each telescopic unit (4) to extend or retract to the target length, and receive collision commands to control the separation of the first connector and the second connector and the separation of the telescopic unit (4) from the fixed unit (3). The cloud system module is used to learn, train, and calibrate the user intent signals uploaded by the vehicle system module, thereby iterating and optimizing the basic general model before sending it back to the vehicle system module.

5. The front cover deformation control system according to claim 4, characterized in that, The signal acquisition module includes at least: The in-vehicle acquisition unit includes an in-vehicle microphone and an in-vehicle camera, used to capture the user's voice signals, facial signals and body signals in real time while in the vehicle. The external acquisition unit includes an external microphone and an in-vehicle surround-view camera, used to capture the user's voice signals, facial signals, body signals, and pedestrian distance signals in real time when the user is outside the vehicle.

6. The front cover deformation control system according to claim 4 or 5, characterized in that, Also includes: A pressure sensing module (7) is located on the side of the inner panel (1) of the front cover (21) and is connected to the vehicle system module. The vehicle system module is used to determine the pressure value of the pressure sensing module (7) and output a collision termination command to the body controller based on the determination result.

7. A method for controlling the deformation of a front cover, implemented based on the front cover deformation control system according to any one of claims 4-6, characterized in that, include: Step S1: The signal acquisition module collects user intent signals and pedestrian distance signals in real time, and transmits the collected signals to the vehicle system module; Step S2: The vehicle system module identifies the user's intent signal and outputs the deformation command corresponding to the user's pre-set intent signal to the body controller based on the identification result. It compares and judges the pedestrian distance signal and braking distance and outputs the corresponding collision command to the body controller based on the judgment result. Step S3: According to the deformation command of the vehicle system module, the deformation controller (5) controls the first connector to connect with the second connector and controls each telescopic unit (4) to extend and retract to the target length. According to the collision command of the vehicle system module, the deformation controller (5) controls the first connector to separate from the second connector and the telescopic unit (4) to detach from the fixed unit (3). Step S4: After the trip is completed, the vehicle system module recognizes that the user has left the vehicle sensing area. It first determines whether the first connector, the second connector and the telescopic unit (4) have been reset to the initial state. If yes, it directly executes step S5. If no, it first controls the first connector, the second connector and the telescopic unit (4) to be reset to the initial state, and then executes step S5. Step S5: The vehicle system module uploads the user intent signals and vehicle driving data from this trip to the cloud system module, iteratively learns the basic model, and then sends the data back to the vehicle system module to complete the switching of user intent signals.

8. The front cover deformation control method according to claim 7, characterized in that, In step S2, The user intent signal includes the user's voice signal, facial signal, and body signal; The pedestrian distance signal is the straight-line distance between the vehicle-mounted surround-view camera and the pedestrian object in front; The process of comparing and judging pedestrian distance signals and braking distances, and then outputting corresponding collision commands to the vehicle controller based on the judgment results includes: Obtain the straight-line distance D1 between the vehicle's surround-view camera and the pedestrian object in front; Calculate the vehicle's current braking distance D; Compare D with D1; when D≥D1, it is determined that the vehicle is about to collide with the pedestrian, and the vehicle system module outputs the corresponding collision command to the body controller; otherwise, it is determined that there is no risk of collision. Where D = v / a, a = μ1x * μ2z, a is the current braking acceleration of the vehicle, μ1 and μ2 are constants, x is the tire performance parameter, z is the braking performance parameter, and v is the current speed of the vehicle.

9. The front cover deformation control method according to claim 7, characterized in that, In step S2, the vehicle system module recognizes the user's intent signal, specifically by: training and labeling the user's body movements and facial expressions based on a pre-stored image recognition model, training and labeling the user's voice signals based on a pre-stored GLM language model, and then iteratively optimizing them.

10. The front cover deformation control method according to claim 7, characterized in that, Step S2 also includes: after the collision occurs, the vehicle system module receives the pressure value transmitted by the pressure sensing module (7), compares the pressure value with the preset pressure value, and when the pressure received by each pressure sensing module (7) is less than the preset value, the vehicle system module determines that the vehicle collision has ended and outputs a collision end command to the body controller. The body controller transmits the collision end command to the deformation controller (5), and the deformation controller (5) controls the first connector, the second connector and the telescopic unit (4) to reset to the initial state.

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