Vehicle collision protection method and apparatus, device, and medium

Abstract

A vehicle collision protection method and apparatus, a device, and a medium. The method comprises: in response to an early warning for collision between a vehicle and an obstacle ahead, acquiring the type of the obstacle ahead (101); if the type of the obstacle ahead is a truck type, acquiring a relative speed between the vehicle and the obstacle ahead (102); determining a threshold adjustment amount on the basis of the relative speed (103); reducing an initial trigger threshold of an airbag on the basis of the threshold adjustment amount to obtain a target trigger threshold (104); and upon detection that the collision intensity of the vehicle is greater than or equal to the target trigger threshold, triggering the airbag (105).

Description

Methods, devices, equipment and media for vehicle collision protection Cross-reference to related applications

[0001] This application claims priority to Chinese patent application No. 202411185706.X, filed on August 27, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to, but is not limited to, the field of vehicle technology, and in particular to a method, apparatus, device, and medium for collision protection of a vehicle. Background Technology

[0003] Airbags provide cushioning for occupants during a vehicle collision, protecting their safety and effectively improving overall vehicle safety. Frontal collisions, offset collisions, and underrun collisions are three common types of forward-facing vehicle collisions. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0005] In a first aspect, embodiments of this disclosure provide a collision protection method for a vehicle, comprising: in response to a collision warning between the vehicle and a forward obstacle, obtaining the type of the forward obstacle; in response to the forward obstacle being a truck type, obtaining the relative speed between the vehicle and the forward obstacle; determining a threshold adjustment amount based on the relative speed; the threshold adjustment amount being set to adjust an initial triggering threshold for the vehicle's airbag, and the threshold adjustment amount being proportional to the relative speed; reducing the initial triggering threshold of the airbag based on the threshold adjustment amount to obtain a target triggering threshold for the airbag; and triggering the airbag in response to detecting that the collision intensity of the vehicle is greater than or equal to the target triggering threshold.

[0006] Secondly, embodiments of this disclosure provide a collision protection device for a vehicle, comprising: an acquisition module configured to acquire the type of the obstacle in response to a collision warning between the vehicle and an obstacle in front; a processing module configured to acquire the relative speed between the vehicle and the obstacle in response to the obstacle being a truck; a determination module configured to determine a threshold adjustment amount based on the relative speed; the threshold adjustment amount being set to adjust an initial trigger threshold of the vehicle's airbag, and the threshold adjustment amount being proportional to the relative speed; an adjustment module configured to reduce the initial trigger threshold of the airbag based on the threshold adjustment amount to obtain a target trigger threshold of the airbag; and a control module configured to trigger the airbag in response to detecting that the collision intensity of the vehicle is greater than or equal to the target trigger threshold.

[0007] Thirdly, embodiments of this disclosure provide an electronic device, including: at least one processor; at least one memory coupled to the at least one processor and configured to store executable instructions of the at least one processor; the at least one processor is configured to read the executable instructions from the at least one memory and execute the executable instructions to implement the vehicle collision protection method described in the first aspect above.

[0008] Fourthly, embodiments of this disclosure provide a non-transitory computer-readable storage medium storing a computer program that, when executed by a processor, implements the vehicle collision protection method described in the first aspect.

[0009] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0011] To more clearly illustrate the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0012] Figure 1 is a schematic flowchart of a vehicle collision protection method provided in an embodiment of this disclosure.

[0013] Figure 2 is a schematic diagram of the trigger threshold curve of an airbag provided in an embodiment of this disclosure.

[0014] Figure 3 is a schematic flowchart of another vehicle collision protection method provided in an embodiment of this disclosure.

[0015] Figure 4 is a schematic diagram of the structure of a vehicle collision protection device provided in an embodiment of this disclosure. Detailed Implementation

[0016] The embodiments of this disclosure will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0017] Numerous specific details are set forth in the following description to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein. The embodiments in the specification are only a part of the embodiments of this disclosure, and not all of them.

[0018] Currently, airbags have a trigger threshold. When a vehicle collides, the trigger threshold determines whether the airbags should be deployed. Compared to frontal and offset collisions, in a crawl-through collision scenario, the airbags deploy later, providing less protection for occupants and resulting in lower vehicle collision safety.

[0019] In view of the above, embodiments of this disclosure provide a method, apparatus, device, and medium for collision protection of vehicles.

[0020] Figure 1 is a schematic flowchart of a vehicle collision protection method provided in an embodiment of this disclosure. The method provided in this disclosure can be executed by a vehicle collision protection device, which can be implemented in software and / or hardware and can be integrated into any electronic device with computing capabilities.

[0021] As shown in Figure 1, the vehicle collision protection method provided in this embodiment includes the following steps 101 to 105.

[0022] In step 101, in response to a collision warning between the vehicle (or vehicle) and an obstacle ahead, the type of obstacle ahead is obtained.

[0023] In this embodiment of the present disclosure, during vehicle operation, obstacles in the surrounding environment are detected and obstacles in front of the vehicle in the direction of vehicle operation are determined. Collision prediction is performed on the obstacles in front. When the collision prediction result indicates that the vehicle and the obstacles in front are about to collide, a collision warning between the vehicle and the obstacles in front is generated.

[0024] Optionally, an Advanced Driving Assistance System (ADAS) is used to predict collisions with obstacles ahead. The ADAS analyzes and processes data collected by onboard sensors to determine information such as obstacles ahead, the predicted collision result between the vehicle and the obstacle, and the type of obstacle. In embodiments of this disclosure, onboard sensors include, but are not limited to, image sensors and radar sensors. Image sensors include, but are not limited to, monocular cameras, multi-view cameras, and depth cameras, and include cameras for acquiring images of the external environment and / or the internal environment of the vehicle. Radar sensors include, but are not limited to, millimeter-wave radar and lidar.

[0025] One possible implementation involves detecting obstacles in front of the vehicle and acquiring the vehicle's motion state information and the obstacle's motion state information. Collision prediction is then performed based on these information to determine if a collision risk exists between the vehicle and the obstacle. When a collision risk is detected, the collision time is calculated, and a collision warning is generated. In embodiments of this disclosure, there are various ways to detect obstacles in front of the vehicle. For example, image data of the area in front of the vehicle can be acquired using an image sensor, and the image data can be identified based on a pre-trained target detection model to determine obstacles in front of the vehicle. This target detection model can be implemented based on machine learning or deep learning. The input to the target detection model is image data, and the output is the target to be detected and its type information. Targets to be detected include, but are not limited to, vehicles and pedestrians. Another example is acquiring point cloud data of the environment surrounding the vehicle using a radar sensor, and then identifying obstacles based on this point cloud data to determine obstacles in front of the vehicle.

[0026] In this embodiment of the disclosure, in response to a collision warning between the vehicle and an obstacle ahead, the type of the obstacle ahead is obtained. Optionally, during vehicle operation, the vehicle collects data of the surrounding environment through onboard sensors and identifies the data collected by the onboard sensors to determine obstacles and their types in the surrounding environment. The obstacle ahead of the vehicle is identified from all obstacles, and its type is stored in a cache. When a collision is detected between the vehicle and the obstacle ahead, a collision warning is generated, and the type of the obstacle ahead is retrieved from the cache. Alternatively, when a collision is detected between the vehicle and an obstacle ahead, and a collision warning is generated, data of the area in front of the vehicle is collected through onboard sensors, and the data collected by the onboard sensors is identified to obtain the obstacle ahead of the vehicle and its type.

[0027] As an example, obtaining the type of obstacle in front includes: acquiring image data of the area in front of the vehicle through an image sensor, identifying the image data of the area in front of the vehicle based on a pre-trained target detection model to determine the obstacle in front of the vehicle and the type of obstacle. The target detection model can be implemented based on machine learning or deep learning. The input of the target detection model is image data, and the output is the vehicle target and the type of the vehicle target. The types of vehicle targets include truck types and non-truck types.

[0028] In step 102, if the obstacle ahead is a truck, the relative speed between the vehicle and the obstacle ahead is obtained.

[0029] In this embodiment of the disclosure, when a collision warning is detected between the vehicle (own vehicle) and an obstacle ahead, and the obstacle ahead is a truck, the collision type between the own vehicle and the obstacle ahead is determined to be a truck-cab collision. Optionally, if the obstacle ahead (the vehicle in front) is a truck, and a rear-end collision is about to occur between the own vehicle and the vehicle in front, the collision type between the own vehicle and the vehicle in front is determined to be a truck-cab collision. For example, the driving directions of the own vehicle and the vehicle in front are obtained. If the driving directions of the own vehicle and the vehicle in front are the same, the collision type between the own vehicle and the vehicle in front is determined to be a truck-cab collision. Alternatively, image data of the area in front of the own vehicle is obtained, which includes the vehicle in front. The image data is then identified. If the rear area of ​​the vehicle in front is identified, the collision type between the own vehicle and the vehicle in front is determined to be a truck-cab collision. Furthermore, the speed of the own vehicle and the speed of the vehicle in front are obtained, and the relative speed between the own vehicle and the vehicle in front is determined based on the speed of the own vehicle and the speed of the vehicle in front.

[0030] In embodiments of this disclosure, truck type may include trucks and other types of vehicles similar to trucks. During the training process of the object detection model, the corresponding vehicles in the training sample images are labeled as truck types, and the labeled training sample images are used to train the object detection model; no specific limitations are imposed here.

[0031] In step 103, the threshold adjustment amount is determined based on the relative velocity.

[0032] In this embodiment of the disclosure, the threshold adjustment amount is used to adjust the initial trigger threshold of the vehicle's airbag and is proportional to the relative speed.

[0033] In step 104, the initial trigger threshold of the airbag is reduced according to the threshold adjustment amount to obtain the target trigger threshold of the airbag.

[0034] In this embodiment of the disclosure, if the collision type is a collision between the vehicle and the obstacle in front, the relative speed between the vehicle and the obstacle in front is obtained, and the initial triggering threshold of the airbag is adjusted according to the relative speed so that the initial triggering threshold is reduced to the target triggering threshold.

[0035] In this embodiment of the disclosure, the initial trigger threshold is preset. The target trigger threshold is obtained by calculating the difference between the initial trigger threshold and the threshold adjustment amount. Since the threshold adjustment amount is proportional to the relative speed, the greater the relative speed, the greater the threshold adjustment amount and the smaller the target trigger threshold.

[0036] In one embodiment of this disclosure, multiple relative speed threshold ranges can be set. When the relative speed falls within different relative speed threshold ranges, different strategies are employed to determine the threshold adjustment amount to adapt to vehicle collision scenarios at different vehicle speeds. Optionally, determining the threshold adjustment amount based on the relative speed includes: determining the threshold adjustment amount to be zero when the relative speed is less than or equal to a first relative speed threshold; determining an adjustment coefficient based on the relative speed when the relative speed is greater than the first relative speed threshold and less than a second relative speed threshold; determining the threshold adjustment amount based on the adjustment coefficient and an initial trigger threshold; and determining the initial trigger threshold as the threshold adjustment amount when the relative speed is greater than or equal to the second relative speed threshold.

[0037] If the first relative velocity threshold is less than the second relative velocity threshold, and the relative velocity is less than or equal to the first relative velocity threshold, the initial trigger threshold is used as the target trigger threshold. If the relative velocity is greater than the first relative velocity threshold but less than the second relative velocity threshold, an adjustment coefficient is determined based on the relative velocity. The adjustment coefficient is proportional to the relative velocity. Then, the adjustment coefficient is multiplied by the initial trigger threshold to obtain the threshold adjustment amount. If the relative velocity is greater than or equal to the second relative velocity threshold, the threshold adjustment amount is equal to the initial trigger threshold, and the target trigger threshold is zero. Alternatively, the threshold adjustment amount is less than the initial trigger threshold, and the difference between the threshold adjustment amount and the initial trigger threshold is within a preset value. In this case, the target trigger threshold is greater than zero, and the difference between the threshold adjustment amount and zero is within the preset value.

[0038] As an example, the first relative speed threshold is 40 km / h, and the second relative speed threshold is 160 km / h. When the relative speed is less than or equal to the first relative speed threshold, the collision damage is relatively small. In this case, the initial trigger threshold is used as the target trigger threshold to ensure the stability of airbag deployment, reduce the risk of false triggering, and avoid occupant injury and repair costs caused by false triggering. When the relative speed is greater than the first relative speed threshold but less than the second relative speed threshold, the initial trigger threshold of the airbag is lowered so that the airbag can deploy within the effective time limit during a collision, improving the safety of vehicle collision protection. It should be noted that the above implementation method of determining the threshold adjustment amount using different strategies is only an example. Multiple relative speed threshold ranges and different relative speed thresholds can be used as needed, and no restrictions are imposed here.

[0039] In one embodiment of this disclosure, determining the adjustment coefficient based on the relative speed includes: determining the difference between the relative speed and a first preset value, and determining the ratio of the difference to a second preset value as the adjustment coefficient.

[0040] As an example, the target trigger threshold is determined using the following formula: Wherein, K1 is the first preset value, K2 is the second preset value, V is the relative speed, T0 is the initial trigger threshold, and T is the target trigger threshold. For example, K1 is 40 and K2 is 120.

[0041] In step 105, when the collision intensity of the vehicle is detected to be greater than or equal to the target trigger threshold, the airbag is triggered.

[0042] In this embodiment of the disclosure, the vehicle's acceleration information is obtained, the vehicle's acceleration information is processed using a preset algorithm to generate the vehicle's collision intensity, and then, when the collision intensity is detected to be greater than or equal to the target trigger threshold at a certain moment, the airbag is controlled to deploy.

[0043] As shown in Figure 2, the horizontal axis represents time, and the vertical axis represents collision intensity. 00 is the curve for the initial trigger threshold, 20 is the curve for the target trigger threshold, 21 is the frontal collision curve, 22 is the offset collision curve, and 23 is the underpass / truck collision curve. For the initial trigger threshold, the airbag deployment time for a frontal collision is approximately 14 ms, for an offset collision it is approximately 45 ms, and for an underpass / truck collision it is approximately 95 ms, exceeding the effective deployment time. The effective deployment time is related to the collision scenario, relative collision speed, and vehicle type. For example, in an underpass / truck collision with a relative collision speed of 40 km / h, the effective deployment time of the airbag is typically approximately 40-50 ms. However, the embodiments of this disclosure are not limited to this; the effective deployment time can be determined based on specific conditions such as the collision scenario, relative collision speed, and vehicle type. Due to the difference between the vehicle and the truck in front, the collision energy transfer in an underpass / truck collision scenario is less than in a frontal or offset collision, resulting in later airbag deployment and poorer occupant protection.

[0044] According to embodiments of this disclosure, in response to a collision warning between the vehicle and a forward obstacle, when the obstacle is a truck, a threshold adjustment amount is determined based on the relative speed between the vehicle and the obstacle. The initial triggering threshold of the airbag is then reduced based on this threshold adjustment amount to obtain a target triggering threshold for the airbag. This target triggering threshold is used to determine whether the airbag should be triggered. This solves the problem in related technologies where delayed airbag triggering during a collision involving a truck or similar obstacle leads to poor occupant protection. The airbag can be triggered promptly during such a collision, effectively protecting occupants and improving the safety of vehicle collision protection. Furthermore, since the threshold adjustment amount is proportional to the relative speed, it allows for more precise determination of the airbag triggering threshold for different vehicle speeds, ensuring that the airbag triggers within the effective time limit at various speeds, thus improving occupant protection and guaranteeing the stability and accuracy of airbag triggering.

[0045] Figure 3 is a schematic flowchart of another vehicle collision protection method provided in this embodiment of the present disclosure. As shown in Figure 3, the vehicle collision protection method includes the following steps 301 to 305.

[0046] In step 301, the type of obstacle in front of the vehicle is obtained. If the type of obstacle in front is a truck, the suspension height of the vehicle is adjusted.

[0047] In this embodiment of the disclosure, when the type of the obstacle (preceding vehicle) in front of the vehicle (own vehicle) is detected to be a truck, the height of the rear collision avoidance device of the preceding vehicle is obtained, and the suspension height of the own vehicle is adjusted according to the height of the rear collision avoidance device of the preceding vehicle. Optionally, during vehicle operation, when the type of the preceding vehicle is detected to be a truck, the height of the rear collision avoidance device of the preceding vehicle is obtained, and the suspension height of the own vehicle is adjusted according to the height of the rear collision avoidance device of the preceding vehicle; or, in response to a collision warning between the own vehicle and an obstacle in front, the height of the rear collision avoidance device of the preceding vehicle is obtained, and the suspension height of the own vehicle is adjusted according to the height of the rear collision avoidance device of the preceding vehicle.

[0048] In one embodiment of this disclosure, if the obstacle in front is a truck, the first height of the rear anti-collision device of the obstacle in front is obtained, and the suspension height of the vehicle is adjusted according to the height difference between the first height and the second height of the front anti-collision device of the vehicle, so that the height of the front anti-collision device of the vehicle is the same as that of the rear anti-collision device of the obstacle in front.

[0049] As an example, image data of the area in front of the vehicle is acquired, which includes the vehicle in front. The image data is then identified to determine the rear collision avoidance device of the vehicle in front, and the first height of the rear collision avoidance device of the vehicle in front is calculated by combining the three-dimensional data.

[0050] In this embodiment, the first height and the second height can refer to the height of the anti-collision device from the ground. The anti-collision device includes an anti-collision beam / bumper. The front anti-collision device of the vehicle is at the same height as the rear anti-collision device of the obstacle in front, including: the height of the front anti-collision device of the vehicle is the same as the height of the rear anti-collision device of the vehicle in front, or the height difference between the height of the front anti-collision device of the vehicle and the rear anti-collision device of the vehicle in front is within a certain range, and the height of the front anti-collision device of the vehicle is less than or equal to a height threshold. Therefore, when a collision is predicted, by adjusting the suspension height of the vehicle to make the height of the front anti-collision device of the vehicle in front equal to that of the rear anti-collision device of the vehicle in front, the front anti-collision device of the vehicle in front can effectively contact the rear anti-collision device of the vehicle in front during a collision, effectively transferring and unloading the energy generated by the collision, reducing the injury to occupants, and further improving the safety of vehicle collision protection.

[0051] In step 302, the relative speed between the vehicle and the obstacle in front is obtained, and the initial triggering threshold of the airbag is adjusted according to the relative speed to obtain the target triggering threshold of the airbag.

[0052] In this embodiment of the disclosure, in response to a collision warning between the vehicle and an obstacle ahead, if the obstacle ahead is a truck, the relative speed between the vehicle and the obstacle is obtained. A threshold adjustment amount is determined based on the relative speed, and the initial triggering threshold of the airbag is reduced based on the threshold adjustment amount to obtain the target triggering threshold of the airbag. In this embodiment of the disclosure, the threshold adjustment amount is proportional to the relative speed.

[0053] Optionally, within a specified time period before the predicted collision time, a threshold adjustment amount can be determined based on the relative velocity, and the initial triggering threshold of the airbag can be reduced based on the threshold adjustment amount. The collision time can be determined based on the collision prediction results of the collision prediction of the obstacle in front. For example, the initial triggering threshold of the airbag can be adjusted based on the relative velocity at least 100ms before the collision time.

[0054] In step 303, the target door of the vehicle is unlocked.

[0055] In one embodiment of this disclosure, after a collision warning is issued between the vehicle and an obstacle in front, the occupancy status of each seat in the vehicle is identified by onboard sensors. Based on the occupancy status of each seat, a target seat without occupants and a target door on the side of the target seat are determined, and the target door is unlocked.

[0056] In this embodiment of the disclosure, identifying the occupancy status of each seat in the vehicle using onboard sensors includes: acquiring image data of the vehicle interior environment using an onboard camera; performing personnel identification on the image data to obtain the positions of personnel in the image data; matching the positions of personnel in the image data with pre-defined seat areas to determine the occupancy status of each seat in the vehicle; wherein, when a person is identified in the seat area, the occupancy status of that seat is determined to be occupied; when no person is identified in the seat area, the occupancy status of that seat is determined to be unoccupant; or, each seat in the vehicle is equipped with a seat sensor, and the occupancy status of each seat in the vehicle is determined by the seat sensor.

[0057] As an example, when the driver's seat and the front passenger seat are occupied, and the rear seats are not occupied, the doors on both sides of the rear seats are unlocked; when the driver's seat and the rear seats are occupied, and the front passenger seat is not occupied, the door on the front passenger side is unlocked.

[0058] Optionally, the target door of the vehicle can be unlocked within a specified time period before the predicted collision time. The collision time can be determined based on the collision prediction results of the collision prediction of the obstacle in front. For example, the target door of the vehicle can be unlocked 50ms before the collision time.

[0059] Since most vehicle batteries are located under the front engine compartment, the shearing force of the truck's rear bumper during a collision is transmitted along the lower part of the hood, potentially severing the low-voltage power supply harness of the battery. This can cause the door motor controller to malfunction, preventing the doors from being opened from the outside. Therefore, unlocking the doors before a collision avoids the risk of the harness and power being cut off after the collision, preventing the doors from being unlocked. Furthermore, by identifying the target seat and the door on the side where no occupants are present and unlocking that door, the safety risks associated with the door on the side where occupants are present are avoided during the collision, further enhancing the vehicle's collision protection safety.

[0060] In step 304, the target seat of the vehicle is controlled to perform a rearward adjustment action.

[0061] In one embodiment of this disclosure, after a collision warning is issued between the vehicle and an obstacle in front, the occupancy status of each seat in the vehicle is identified by the vehicle-mounted sensors. If the relative speed between the vehicle and the obstacle in front is greater than a third relative speed threshold, and if it is determined from the occupancy status of each seat in the vehicle that there are no occupants in the seat behind the preset seat, the seat at the preset seat is controlled to perform a rearward adjustment action.

[0062] In this embodiment, the rearward adjustment action includes a rearward movement and a tilting motion. The rearward movement includes controlling the seat to move backward a certain distance in the horizontal direction, and the tilting motion includes controlling the tilt angle between the seat back and the horizontal direction to decrease by a certain angle along the seat tilting direction. Optionally, the target posture of the seat after performing the rearward adjustment action is determined based on the relative speed between the vehicle and the obstacle in front. Different relative speeds correspond to different target postures to adapt to vehicle collision scenarios at different vehicle speeds.

[0063] As an example, the preset seat is the driver's seat. When the relative speed between the vehicle and an obstacle in front exceeds a third relative speed threshold, and there are no occupants in the seats behind the driver's seat, the driver's seat is controlled to adjust backward. In this example, the third relative speed threshold can be calibrated as needed, for example, to 60 km / h. Therefore, when the control conditions are met, the seatbelt is pre-tensioned to secure the driver, and the seat is moved and reclined backward via the seat adjustment device. This increases the driver's survival space and further improves the safety of vehicle collision protection, addressing the risk of high-speed obstacle insertion into the passenger compartment.

[0064] In one embodiment of this disclosure, since the overall rearward movement of the seat after performing a rearward adjustment action will affect the cushioning effect after the airbag is triggered, after determining the rearward adjustment action, the airbag inflation adjustment amount is determined by querying a preset relationship based on the target posture that the seat can reach after performing the rearward adjustment action. The preset relationship includes the correspondence between the seat posture and the inflation adjustment amount. Then, the airbag inflation amount is adjusted according to the inflation adjustment amount. Thus, the airbag inflation amount can be increased or a second inflation can be performed according to the change of the seat posture to ensure the cushioning effect after the airbag is triggered.

[0065] In step 305, when the collision intensity of the vehicle is detected to be greater than or equal to the target trigger threshold, the airbag is triggered.

[0066] In this embodiment, the vehicle's collision protection system includes ADAS, an airbag controller, an airbag assembly, an air suspension controller, an air suspension assembly, a door controller, and a door motor. When the ADAS determines a collision warning between the vehicle and a forward obstacle, and the obstacle is a truck, it sends a deployment adjustment signal, a suspension height adjustment signal, and a door unlock signal to the airbag controller, air suspension controller, and door controller, respectively, to control the airbag deployment, air suspension raising, and door unlocking.

[0067] In this embodiment of the disclosure, when a collision is predicted, the suspension height of the vehicle is adjusted so that the front anti-collision device of the vehicle is at the same height as the rear anti-collision device of the vehicle in front. This allows the front anti-collision device of the vehicle to make effective contact with the rear anti-collision device of the vehicle in front during a collision, effectively transferring and unloading the energy generated by the collision, reducing the injury to the occupants. The doors are unlocked in advance before the collision to avoid the inability to unlock the doors due to the disconnection of the wiring harness and power supply after the collision. The seat is also moved back and reclined using the seat adjustment device to increase the driver's survival space, further improving the safety of vehicle collision protection.

[0068] Figure 4 is a schematic diagram of a vehicle collision protection device provided in an embodiment of this disclosure. As shown in Figure 4, the vehicle collision protection device includes an acquisition module 41, a processing module 42, a determination module 43, an adjustment module 44, and a control module 45.

[0069] The acquisition module 41 is configured to acquire the type of the obstacle in response to a collision warning between the vehicle and an obstacle ahead.

[0070] The processing module 42 is configured to obtain the relative speed between the vehicle and the obstacle if the obstacle ahead is a truck.

[0071] The determining module 43 is configured to determine a threshold adjustment amount based on the relative speed; the threshold adjustment amount is used to adjust the initial triggering threshold of the vehicle's airbag and is proportional to the relative speed.

[0072] The adjustment module 44 is configured to reduce the initial trigger threshold of the airbag according to the threshold adjustment amount, so as to obtain the target trigger threshold of the airbag.

[0073] The control module 45 is configured to trigger the airbag when it detects that the collision intensity of the vehicle is greater than or equal to the target trigger threshold.

[0074] In one embodiment of this disclosure, the determining module 43 is specifically configured to: determine the threshold adjustment amount as zero when the relative speed is less than or equal to a first relative speed threshold; determine an adjustment coefficient based on the relative speed when the relative speed is greater than the first relative speed threshold and less than a second relative speed threshold; the adjustment coefficient is proportional to the relative speed; determine the threshold adjustment amount based on the adjustment coefficient and the initial trigger threshold; and determine the initial trigger threshold as the threshold adjustment amount when the relative speed is greater than or equal to the second relative speed threshold.

[0075] In one embodiment of this disclosure, the determining module 43 is specifically configured to: determine the difference between the relative speed and a first preset value; and determine the ratio of the difference to a second preset value as the adjustment coefficient.

[0076] In one embodiment of this disclosure, the device further includes: a suspension control module configured to, if the type of the obstacle in front is a truck, obtain a first height of the rear anti-collision device of the obstacle in front; and adjust the suspension height of the vehicle according to the height difference between the first height and a second height of the vehicle's front anti-collision device, so that the height of the vehicle's front anti-collision device is the same as that of the rear anti-collision device of the obstacle in front.

[0077] In one embodiment of this disclosure, the device further includes: a door unlocking module configured to, in response to a collision warning between the vehicle and an obstacle ahead, identify the occupancy status of each seat in the vehicle using onboard sensors; determine a target seat without occupants and a target door on the side of the target seat based on the occupancy status of each seat in the vehicle, and unlock the target door.

[0078] In one embodiment of this disclosure, the device further includes: a seat adjustment module configured to, in response to a collision warning between the vehicle and an obstacle ahead, identify the occupancy status of each seat in the vehicle using onboard sensors; and, if, when the relative speed is greater than a third relative speed threshold, if it is determined based on the occupancy status of each seat in the vehicle that there is no occupant in the seat behind a preset seat, control the seat at the preset seat to perform a rearward adjustment action.

[0079] In one embodiment of this disclosure, the device further includes: an inflation control module configured to determine a target posture after the seat performs the rearward adjustment action; query a preset relationship to determine the inflation adjustment amount of the airbag corresponding to the target posture, wherein the preset relationship includes a correspondence between the seat posture and the inflation adjustment amount; and adjust the inflation amount of the airbag according to the inflation adjustment amount.

[0080] The vehicle collision protection device provided in this disclosure can execute the vehicle collision protection method provided in any method embodiment of this disclosure, and has the corresponding functional modules and beneficial effects for executing the method. Content not described in detail in the device embodiments of this disclosure can be referred to the descriptions in any method embodiments of this disclosure.

[0081] This disclosure also provides an electronic device including one or more processors and one or more memories coupled to the processors. The processor may be a central processing unit (CPU) or other processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device to perform desired functions. The memory may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor may execute the computer program instructions to implement the methods of the embodiments of this disclosure above and / or other desired functions. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0082] In one example, the electronic device may also include input and output devices interconnected via a bus system and / or other forms of connection. Furthermore, the input device may include, for example, a keyboard, a mouse, etc. The output device can output various information to the outside, including determined distance information, direction information, etc. The output device may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc. In addition, depending on the specific application, the electronic device may include any other suitable components such as a bus, input / output interfaces, etc.

[0083] In addition to the methods and apparatus described above, embodiments of this disclosure may also provide a computer program product comprising computer program instructions that, when executed by a processor, cause the processor to perform any of the methods provided in the embodiments of this disclosure.

[0084] Computer program products can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this disclosure. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on a user's computing device, partially on a user's computing device, as a standalone software package, partially on a user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0085] Furthermore, embodiments of this disclosure may also provide a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, cause the processor to perform any of the methods provided in the embodiments of this disclosure.

[0086] Computer-readable storage media may take the form of any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] The above description is merely a specific embodiment of this disclosure, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A collision protection method for a vehicle, comprising: In response to a collision warning between the vehicle and an obstacle ahead, the type of the obstacle ahead is obtained; In response to the obstacle being identified as a truck, the relative speed between the vehicle and the obstacle is obtained. A threshold adjustment amount is determined based on the relative speed; the threshold adjustment amount is set as the initial trigger threshold for adjusting the vehicle's airbags, and the threshold adjustment amount is proportional to the relative speed. The initial trigger threshold of the airbag is reduced according to the threshold adjustment amount to obtain the target trigger threshold of the airbag; as well as The airbag is triggered in response to the detection that the collision intensity of the vehicle is greater than or equal to the target trigger threshold. The method as described in claim 1, wherein, The step of determining the threshold adjustment amount based on the relative velocity includes: If the relative velocity is less than or equal to a first relative velocity threshold, the threshold adjustment amount is determined to be zero; When the relative speed is greater than a first relative speed threshold and less than a second relative speed threshold, an adjustment coefficient is determined based on the relative speed; the adjustment coefficient is proportional to the relative speed; and a threshold adjustment amount is determined based on the adjustment coefficient and the initial trigger threshold; and If the relative speed is greater than or equal to the second relative speed threshold, the initial trigger threshold is determined as the threshold adjustment amount. The method as described in claim 2, wherein, The step of determining the adjustment coefficient based on the relative speed includes: Determine the difference between the relative velocity and the first preset value; The ratio of the difference to the second preset value is determined as the adjustment coefficient. The method as described in claim 3, wherein, The target trigger threshold is determined using the following formula: Wherein, K1 is the first preset value, K2 is the second preset value, V is the relative speed, T0 is the initial trigger threshold, and T is the target trigger threshold. The method according to any one of claims 1 to 4 further comprises: In response to the obstacle ahead being a truck, the vehicle's suspension height is adjusted. The method of claim 5, wherein, The adjustment of the vehicle's suspension height includes: Obtain the first height of the rear anti-collision device relative to the obstacle in front; and The vehicle's suspension height is adjusted based on the height difference between the first height and the second height of the vehicle's front anti-collision device, so that the height of the vehicle's front anti-collision device is level with the height of the rear anti-collision device of the obstacle in front. The method of claim 6, wherein, Making the front collision avoidance device of the vehicle level with the rear collision avoidance device of the obstacle in front, including: The second height of the vehicle's front collision avoidance device is the same as the first height of the rear collision avoidance device of the obstacle in front; or The height difference between the second height of the vehicle's front anti-collision device and the first height of the rear anti-collision device of the obstacle in front is within a preset range, and the second height of the vehicle's front anti-collision device is less than or equal to a height threshold value. The method according to any one of claims 1 to 7 further comprises: In response to a collision warning between the vehicle and an obstacle ahead, the vehicle uses onboard sensors to identify the occupancy status of each seat in the vehicle. as well as Based on the seating status of each seat in the vehicle, a target seat without occupants and a target door on the side of the target seat are determined, and the target door is unlocked. The method as described in any one of claims 1 to 8 further comprises: In response to a collision warning between the vehicle and an obstacle ahead, the vehicle uses onboard sensors to identify the occupancy status of each seat in the vehicle. as well as If the relative speed is greater than the third relative speed threshold, and it is determined from the seating status of each seat in the vehicle that there are no occupants in the seat behind the preset seat, then the seat at the preset seat is controlled to perform a rearward adjustment action. The method of claim 9, wherein, The control of the seat at the preset seat to perform a rearward adjustment action includes: Control the seat to move backward a certain distance in the horizontal direction; and / or The tilt angle between the backrest of the seat and the horizontal direction is controlled to decrease by a predetermined angle along the reclining direction of the seat. The method as described in claim 9 or 10, wherein, The control of the seat at the preset seat to perform a rearward adjustment action includes: Based on the relative speed between the vehicle and the obstacle in front, the target posture of the seat after performing a rearward adjustment is determined, wherein the seat is in different target postures when the relative speed is in different ranges. The method according to any one of claims 9 to 11 further comprises: Determine the target pose of the seat after it performs the rearward adjustment action; Based on the preset relationship between the seat position and the inflation adjustment amount, the inflation adjustment amount of the airbag corresponding to the target position is determined; and The inflation amount of the airbag is adjusted according to the inflation adjustment amount. A collision protection device for a vehicle, comprising: The acquisition module is configured to acquire the type of the obstacle in response to a collision warning between the vehicle and an obstacle ahead; The processing module is configured to obtain the relative speed between the vehicle and the obstacle in response to the obstacle being of type truck. The determining module is configured to determine a threshold adjustment amount based on the relative speed; the threshold adjustment amount is set to adjust the initial trigger threshold of the vehicle's airbag, and the threshold adjustment amount is proportional to the relative speed; The adjustment module is configured to reduce the initial trigger threshold of the airbag according to the threshold adjustment amount, so as to obtain the target trigger threshold of the airbag. as well as The control module is configured to trigger the airbag in response to detecting that the collision intensity of the vehicle is greater than or equal to the target trigger threshold. An electronic device, comprising: At least one processor; At least one memory, coupled to the at least one processor, and configured to store executable instructions of the at least one processor; The at least one processor is configured to read the executable instructions from the at least one memory and execute the executable instructions to implement the collision protection method for the vehicle according to any one of claims 1 to 12. A non-transitory computer-readable storage medium, wherein, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the collision protection method for the vehicle according to any one of claims 1 to 12.

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