Control method and system for reducing collision deformation of vehicle, storage medium and vehicle

Abstract

The embodiment of the invention provides a control method and system for reducing collision deformation of a vehicle, a storage medium and the vehicle. The control method comprises the following steps: acquiring vehicle parameter information of a target vehicle and a vehicle distance from the target vehicle to the vehicle; screening vehicle type information corresponding to the vehicle parameter information in a database, and calculating a height difference value between the longitudinal beam height of the vehicle corresponding to the vehicle type information and the longitudinal beam height of the vehicle; if the height difference value is larger than the height threshold value and the vehicle distance is smaller than or equal to the first vehicle distance threshold value, the suspension of the vehicle is controlled to lift or lower the chassis of the vehicle so that the height difference value can be smaller than or equal to the height threshold value, and therefore the longitudinal beam of the vehicle and the longitudinal beam of the target vehicle can be roughly located at the same height; collision force generated by vehicle collision can be mainly transmitted along the longitudinal beams, so that deformation of the vehicle is reduced, the risk that a rear vehicle rolls over and the like is reduced, and the safety performance of the vehicle is improved.

Description

Technical Field

[0001] The present disclosure belongs to the field of vehicle control technology, and in particular, relates to a control method, system, storage medium and vehicle for reducing vehicle collision deformation. Background Art

[0002] At present, as cars have become one of the mainstream means of transportation, the incidence of car rear-end collisions is getting higher and higher. During a rear-end collision, the front of the rear car hits the rear of the front car. When the models of the two cars are very different, the collision deformation of the vehicles is usually large, and may even cause the rear car to roll over, seriously endangering the safety of the people in the car. Summary of the invention

[0003] The embodiments of the present application provide a control method, system and vehicle for reducing vehicle impact deformation, which can improve the safety performance of the vehicle.

[0004] In a first aspect, an embodiment of the present application provides a control method for reducing vehicle impact deformation, comprising the steps of:

[0005] Obtain vehicle parameter information of the target vehicle and the distance between the target vehicle and the own vehicle;

[0006] Filtering the vehicle model information corresponding to the vehicle parameter information in the database, and calculating the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle;

[0007] If the height difference is greater than the height threshold and the vehicle distance is less than or equal to the first vehicle distance threshold, the suspension of the vehicle is controlled to raise or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold.

[0008] In some embodiments, the database includes multiple data groups, the multiple data groups correspond one-to-one to multiple road sections, and the data in one data group includes historical vehicle model information in the corresponding road section;

[0009] The steps of filtering the vehicle model information corresponding to the vehicle parameter information in the database include:

[0010] Obtaining the section information of the target vehicle driving the section, and filtering the data group corresponding to the section driving the target vehicle according to the section information;

[0011] According to the vehicle parameter information, the vehicle model information corresponding to the vehicle parameter information is filtered in the data group corresponding to the target vehicle driving section.

[0012] In some embodiments, the step of controlling the suspension of the vehicle to raise or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold comprises:

[0013] If the longitudinal beam height of the vehicle corresponding to the vehicle model information is less than the longitudinal beam height of the vehicle, the suspension body of the suspension of the vehicle is controlled to lower the chassis of the vehicle;

[0014] If the longitudinal beam height of the vehicle corresponding to the vehicle model information is greater than the longitudinal beam height of the vehicle, it is determined whether the height difference is greater than the maximum lifting height of the suspension body;

[0015] If so, the raising device of the suspension is controlled to be unlocked, and the chassis of the vehicle is raised by the raising device; if not, the suspension body is controlled to raise the chassis of the vehicle.

[0016] In some embodiments, before the step of controlling the suspension raising device to unlock and raising the chassis of the vehicle by the raising device, the step further includes:

[0017] Determining whether the vehicle distance is greater than a second vehicle distance threshold, wherein the second vehicle distance threshold is less than the first vehicle distance threshold;

[0018] If so, control the suspension body to lift the chassis of the vehicle;

[0019] If not, the raising device is unlocked and the chassis of the vehicle is raised by the raising device.

[0020] In some embodiments, after the step of controlling the suspension of the vehicle to raise or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold, the step further includes:

[0021] If the vehicle and the target vehicle do not collide, determine whether the vehicle distance is greater than a first vehicle distance threshold;

[0022] If yes, control the suspension of the vehicle to reset or control the vehicle to stop;

[0023] If not, the vehicle is controlled to decelerate until the vehicle distance is greater than the first vehicle distance threshold.

[0024] In some embodiments, the control method further comprises the steps of:

[0025] Obtain real-time traffic information of the road ahead where the vehicle is traveling, and determine whether there are any obstacles on the road ahead based on the real-time traffic information;

[0026] If yes, obtain the height of the obstacle. If the height of the obstacle is greater than or equal to the height of the chassis of the vehicle, control the suspension of the vehicle to lift the chassis of the vehicle.

[0027] If not, control the vehicle to drive normally.

[0028] In some embodiments, the vehicle parameter information includes at least one of the ground height of the rear end of the vehicle near the ground, the width of the rear end of the vehicle near the ground, the ground height of the rear end of the vehicle far from the ground, the width of the rear end far from the ground, and the width between the two rear wheels; and / or, the vehicle parameter information includes at least one of the ground height of the front end of the vehicle near the ground, the width of the front end of the vehicle near the ground, the ground height of the front end far from the ground, the width of the front end far from the ground, and the width between the two front wheels.

[0029] In a second aspect, an embodiment of the present application also provides a control system for reducing vehicle impact deformation, including a detection unit, a suspension, and a controller, the controller including a memory and a processor, the memory storing computer program instructions that can be executed on the processor, and the computer program instructions, when executed by the processor, implement any of the steps of the above control method for reducing vehicle impact deformation.

[0030] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement any one of the above control methods for reducing vehicle impact deformation.

[0031] In a fourth aspect, an embodiment of the present application also provides a vehicle, comprising the above-mentioned control system.

[0032] The embodiment of the present application provides a control method, system, storage medium and vehicle for reducing vehicle impact deformation. The control method includes the steps of: obtaining vehicle parameter information of a target vehicle and the distance between the target vehicle and the vehicle; filtering the vehicle model information corresponding to the vehicle parameter information in a database, and calculating the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle; if the height difference is greater than the height threshold, and the vehicle distance is less than or equal to the first vehicle distance threshold, then controlling the suspension of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold, so that the longitudinal beam of the vehicle and the longitudinal beam of the target vehicle can be roughly at the same height, and when the two vehicles collide, the collision force generated by the vehicle collision can be mainly transmitted along the longitudinal beam, thereby reducing the deformation of the vehicle, and reducing the risk of the rear vehicle rolling over, etc., and improving the safety performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flow chart of a control method for reducing vehicle impact deformation provided by some embodiments of the present application;

[0034] Figure 2 is another flow chart of a control method for reducing vehicle impact deformation provided by some embodiments of the present application;

[0035] Figure 3 is another flow chart of a control method for reducing vehicle impact deformation provided by some embodiments of the present application;

[0036] Figure 4 is a schematic diagram of the structure of a suspension provided by some embodiments of the present application;

[0037] Figure 5 is another flow chart of a control method for reducing vehicle impact deformation provided by some embodiments of the present application;

[0038] Figure 6 This is another structural schematic diagram of the control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0039] Description of Figure Numbers:

[0040] Suspension 10; suspension mounting plate 11; suspension body 12; shock absorber 121; shock absorbing spring 122; spring mounting plate 123; height increasing device 13. DETAILED DESCRIPTION

[0041] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0043] As cars have become one of the mainstream means of transportation, the incidence of car rear-end collisions is getting higher and higher. During a rear-end collision, the front of the rear car hits the rear of the front car. When the models of the two cars are very different, for example, when a vehicle with a higher chassis, such as a sports utility vehicle or an off-road vehicle, rears a car with a lower chassis, the vehicle with the higher chassis may ride on the car, or even cause dangerous situations such as the vehicle rolling over. Or, when a vehicle rear-ends a vehicle with an extra-high chassis, such as a truck, a van, or a heavy truck, the vehicle may drill under the above-mentioned vehicle with an extra-high chassis, causing the rear of the vehicle with an extra-high chassis to directly hit the A-pillar or windshield of the rear car, causing serious deformation of the rear car, thereby endangering the personal safety of the people in the car.

[0044] At present, in order to solve the above technical problems, the embodiments of the present application provide a control method, system, storage medium and vehicle for reducing vehicle impact deformation. The control method for reducing vehicle impact deformation is first introduced below.

[0045] Figure 1 It is a flow chart of a control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0046] like Figure 1 As shown, in the first aspect, the embodiment of the present application provides a control method for reducing vehicle impact deformation, comprising the steps of:

[0047] S1, obtaining vehicle parameter information of a target vehicle and the distance between the target vehicle and the own vehicle.

[0048] The vehicle parameter information may be information including various outer contour parameters of the target vehicle. A detection unit may be provided on the vehicle, and the detection unit may detect the vehicle parameter information of the target vehicle and the distance from the target vehicle to the vehicle, and send the information to the controller. It should be clear that the target vehicle may be the vehicle in front of the vehicle in the driving direction, or the vehicle behind the vehicle. The control method in this embodiment may be applied to reduce the collision deformation when the vehicle rear-ends the vehicle in front, or may be applied to reduce the collision deformation when the vehicle behind rear-ends the vehicle, and is not limited here.

[0049] S2, selecting vehicle model information corresponding to the vehicle parameter information in the database, and calculating the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle.

[0050] The database may include but is not limited to data in a traffic accident collision scenario library. Specifically, the data in the database may at least include the front longitudinal beam height of the vehicle, the rear longitudinal beam height of the vehicle, the vehicle model information corresponding to each vehicle model, the vehicle parameter information of each vehicle model information corresponding to the vehicle model information, and the front longitudinal beam height and / or rear longitudinal beam height of the vehicle model information corresponding to the vehicle model information. Optionally, the database may also include a profile image of the vehicle corresponding to each vehicle model. The controller selects the vehicle model information corresponding to the vehicle parameter information in the database according to the above vehicle parameter information, and calls the longitudinal beam height of the vehicle corresponding to the vehicle model information to calculate the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle.

[0051] It can be understood that in the step of calculating the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle itself, when the target vehicle is the vehicle in front of the vehicle in the driving direction, the longitudinal beam height of the vehicle corresponding to the vehicle model information can be the rear longitudinal beam height of the target vehicle, and the longitudinal beam height of the vehicle itself can be the front longitudinal beam height of the vehicle; when the target vehicle is the rear vehicle of the vehicle, the longitudinal beam height of the vehicle corresponding to the vehicle model information can be the front longitudinal beam height of the target vehicle, and the longitudinal beam height of the vehicle itself can be the rear longitudinal beam height of the vehicle.

[0052] S3: If the height difference is greater than the height threshold and the vehicle distance is less than or equal to the first vehicle distance threshold, the suspension 10 of the vehicle is controlled to raise or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold.

[0053] The first vehicle distance threshold refers to the pre-set minimum vehicle distance value that enables the host vehicle and the target vehicle to travel safely without collision. It can be understood that when the vehicle distance between the host vehicle and the target vehicle is greater than the first vehicle distance threshold, the possibility of collision between the host vehicle and the target vehicle is small, so there is no need to adjust the chassis height of the host vehicle. When the vehicle distance between the host vehicle and the target vehicle is less than or equal to the first vehicle distance threshold, the host vehicle and the target vehicle may collide. At this time, the suspension 10 of the host vehicle can be controlled to lift or lower the chassis of the host vehicle to reduce the height difference so that the height difference is less than or equal to the height threshold.

[0054] The height threshold refers to the maximum value pre-set to enable the projection of the longitudinal beam of the target vehicle on the vehicle along the length direction of the vehicle to overlap at least partially with the projection of the longitudinal beam of the vehicle on the vehicle along the length direction of the vehicle. When the height difference is less than or equal to the height threshold, the projection of the longitudinal beam of the target vehicle on the vehicle along the length direction of the vehicle overlaps at least partially with the projection of the longitudinal beam of the vehicle on the vehicle along the length direction of the vehicle. At this time, if the vehicle collides with the target vehicle, the collision force generated by the collision can be transmitted along the longitudinal beams of the two vehicles, and the collision deformation is small, so there is no need to adjust the chassis height of the vehicle. When the height difference is greater than the height threshold, the projection of the longitudinal beam of the target vehicle on the vehicle along the length direction of the vehicle does not overlap with the projection of the longitudinal beam of the vehicle on the vehicle along the length direction of the vehicle. At this time, if the vehicle collides with the target vehicle, the collision force generated by the collision is difficult to be transmitted along the longitudinal beam, and the collision deformation of the two vehicles is large. Therefore, by controlling the suspension 10 of the vehicle to lift or lower the chassis of the vehicle, the height difference can be reduced so that the height difference is less than or equal to the height threshold. It can be understood that when the height difference is 0, the projection of the target vehicle's longitudinal beam on the vehicle along the length direction of the vehicle completely overlaps with the projection of the longitudinal beam of the vehicle on the vehicle along the length direction of the vehicle. At this time, if the vehicle collides with the target vehicle, the collision force generated by the collision can be transmitted along the longitudinal beams of the two vehicles to the greatest extent, thereby minimizing the deformation of the vehicle.

[0055] In this embodiment, when the height difference is greater than the height threshold and the vehicle distance is less than or equal to the first vehicle distance threshold, the height difference can be reduced by controlling the suspension 10 of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold. When the two vehicles collide, since the longitudinal beam of the target vehicle and the longitudinal beam of the vehicle are roughly at the same height, the collision force generated by the vehicle collision can be mainly transmitted along the longitudinal beam, thereby reducing the deformation of the vehicle and reducing the risk of the rear vehicle rolling over, thereby improving the safety performance of the vehicle.

[0056] Figure 2 It is another flow chart of a control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0057] like Figure 2As shown, in some embodiments, the database includes multiple data groups, and the multiple data groups correspond one-to-one to multiple road sections. The data in one data group includes historical vehicle model information in the corresponding road section.

[0058] The number of data groups can be reasonably determined according to the number of road sections. Optionally, the multiple road sections may include, but are not limited to, highway sections, urban sections, rural sections, forestry sections, and other types of sections. It can be understood that the road section in this embodiment refers to a type of road section. Taking the highway section as an example, the highway section refers to the general term for all highways, and the data in the corresponding database may include the historical vehicle model information on all highways.

[0059] The steps of filtering the vehicle model information corresponding to the vehicle parameter information in the database include:

[0060] S21, obtaining the section information of the target vehicle traveling section, and filtering the data group corresponding to the target vehicle traveling section according to the section information.

[0061] The road section information may include at least one of various types of information that can identify the road section type, such as the road section name, grid index code, road section index code, road section width, and road section picture. The road section information can be detected by the detection unit. When the vehicle enters a road section, the detection unit detects the road section information of the corresponding road section and sends the road section information to the controller. After receiving the road section information, the controller identifies which road section the road section information corresponds to and selects the data group corresponding to the road section.

[0062] S22, based on the vehicle parameter information, filter the vehicle model information corresponding to the vehicle parameter information in the data group corresponding to the target vehicle driving section.

[0063] In this embodiment, by setting the database to include multiple data groups, the multiple data groups correspond one-to-one to multiple road sections, and the data in one data group includes historical vehicle model information in the corresponding road section. Therefore, in the step of filtering the vehicle model information corresponding to the vehicle parameter information in the database, the section information of the target vehicle driving section is first obtained, and then the data group corresponding to the target vehicle driving section is filtered out according to the section information, so that the corresponding vehicle model information is preferentially filtered according to the vehicle parameter information in the data group corresponding to the target vehicle driving section, without filtering the data in the entire database, which can improve the data screening efficiency and thus improve the response speed of the controller.

[0064] Furthermore, after step S22, the method further includes step: S23, if the vehicle model information corresponding to the vehicle parameter information is not screened out in the data group corresponding to the target vehicle driving section, continue to screen out in the remaining data groups until the vehicle model information corresponding to the vehicle parameter information is screened out.

[0065] As another example, in the database, the data in a data group may also include historical vehicle model information of two or more road sections. For example, the historical vehicle model information of a road section with a vehicle flow greater than a flow threshold may be stored in one data group, while the historical vehicle model information of two or more road sections with a vehicle flow less than the flow threshold may be uniformly stored in another data group. The specific data group division rules may be reasonably set according to actual conditions, and this embodiment does not make any specific limitations.

[0066] Figure 3 This is another flow chart of a control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0067] like Figure 3 As shown, in some embodiments, the step of controlling the suspension 10 of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold includes:

[0068] S31, if the longitudinal beam height of the vehicle corresponding to the vehicle model information is smaller than the longitudinal beam height of the vehicle, the suspension body 12 of the suspension 10 of the vehicle is controlled to lower the chassis of the vehicle.

[0069] It can be understood that the height value of the chassis lowered by the suspension body 12 can be infinitely close to the height difference value. Preferably, the height value of the chassis lowered by the suspension body 12 is equal to the height difference value, so that the projection of the longitudinal beam of the target vehicle along the length direction of the vehicle on the vehicle completely overlaps with the projection of the longitudinal beam of the vehicle along the length direction of the vehicle on the vehicle.

[0070] S32, if the longitudinal beam height of the vehicle corresponding to the vehicle model information is greater than the longitudinal beam height of the vehicle, it is determined whether the height difference is greater than the maximum lifting height of the suspension body 12.

[0071] If the longitudinal beam height of the vehicle corresponding to the vehicle model information is greater than the longitudinal beam height of this vehicle, it is necessary to lift the chassis of this vehicle so that the projection of the longitudinal beam of the target vehicle along the length direction of this vehicle on this vehicle at least partially overlaps with the projection of the longitudinal beam of this vehicle along the length direction of this vehicle on this vehicle.

[0072] S33: If yes, the height-raising device 13 of the suspension 10 is controlled to be unlocked, and the chassis of the vehicle is lifted by the height-raising device 13.

[0073] S34, if not, control the suspension body 12 to lift the chassis of the vehicle.

[0074] It can be understood that when it is necessary to lift the chassis of the vehicle, it is possible to first determine whether the height difference is greater than the maximum lifting height of the suspension body 12. If the height difference is less than the maximum lifting height, the chassis of the vehicle can be lifted by the suspension body 12 to make the height difference less than or equal to the height threshold; if the height difference is greater than the maximum lifting height of the suspension body 12, at this time, if the chassis of the vehicle is lifted by the suspension body 12, after the chassis is lifted to the maximum height, the height difference may still be greater than the height threshold. Therefore, when the height difference is greater than the maximum lifting height of the suspension body 12, the height-raising device 13 of the suspension 10 is controlled to be unlocked so that the chassis of the vehicle can be lifted by the height-raising device 13, so that the height difference after the chassis is lifted is less than the height threshold.

[0075] In this embodiment, by providing the height raising device 13 to raise the chassis of the vehicle when the height difference is greater than the maximum lifting height of the suspension body 12, the collision deformation of the vehicle during collision can be further reduced, thereby improving the safety performance of the vehicle.

[0076] Figure 4 It is a schematic diagram of the structure of the suspension provided in some embodiments of the present application.

[0077] like Figure 4 As shown, optionally, the suspension 10 may include a suspension mounting plate 11, a suspension body 12, and a height-increasing device 13. The height-increasing device 13 has a lifting height greater than the maximum lifting height of the suspension body 12, and can be used to lift the chassis of the vehicle when the height difference is greater than the maximum lifting height of the suspension body 12. The suspension body 12 is mounted on the chassis of the vehicle through the suspension mounting plate 11. The suspension body 12 is arranged on a side of the chassis close to the ground. The suspension body 12 is used to lower the chassis of the vehicle or to lift the chassis of the vehicle when the height difference is less than or equal to the maximum lifting height. The suspension body 12 may include a shock absorber 121, a shock absorbing spring 122, and a spring mounting plate 123. The shock absorbing spring 122 is mounted on the outer periphery of the shock absorber 121 through the spring mounting plate 123. The height-increasing device 13 may be arranged on the spring mounting plate 123 and located between the spring mounting plate 123 and the suspension mounting plate 11. Optionally, the liftable height of the height-increasing device 13 can be reasonably set according to the rear height of the vehicle corresponding to each vehicle model information in the database, so that it can adapt to the rear height of most oversized vehicles such as trucks and vans.

[0078] Optionally, the height-increasing device 13 may include a control mechanism and a lifting mechanism, which may be respectively arranged on the spring mounting plate 123 and located between the spring mounting plate 123 and the suspension mounting plate 11, and the control mechanism may be arranged on one side of the lifting mechanism along the length direction or width direction of the chassis, and is used to control the lifting mechanism to extend or contract along the thickness direction of the chassis. When the height difference is greater than the maximum lifting height of the suspension body 12, the controller may send an unlocking instruction to the control mechanism, so that the control mechanism controls the lifting mechanism to unlock, and controls the lifting mechanism to extend along the thickness direction of the chassis toward the direction close to the suspension mounting plate 11, so as to lift the suspension mounting plate 11, and then drive the chassis to be lifted through the suspension mounting plate 11.

[0079] Furthermore, the control mechanism may include a control switch and a locking component, the control switch is used to control the locking component to move in a direction away from the lifting mechanism, the locking component abuts against the end of the lifting mechanism along the thickness direction of the chassis toward the suspension mounting plate 11, so that the lifting mechanism is limited by the locking component to prevent the lifting mechanism from being accidentally unlocked. When the height difference is greater than the maximum lifting height of the suspension body 12, the control switch can control the locking component to move in a direction away from the lifting mechanism to release the abutment between the locking component and the lifting mechanism, unlock the lifting mechanism, and allow the lifting mechanism to extend in the thickness direction of the chassis toward the direction close to the suspension mounting plate 11.

[0080] Further, the locking component may include a guide shaft, a first metal plate, a second metal plate and a contact piece, wherein the guide shaft is fixedly arranged on the spring mounting plate 123 and extends in a direction close to or away from the lifting mechanism, the first metal plate is fixedly connected to the guide shaft, the second metal plate is located on a side of the first metal plate close to the lifting mechanism and is slidably arranged relative to the guide shaft, the contact piece is fixedly connected to a side of the second metal plate close to the lifting mechanism, the contact piece abuts against a side of the lifting mechanism along the thickness direction of the chassis toward the suspension mounting plate 11, and the control switch is connected to the first metal plate, and the control switch can be used to energize the first metal plate so that the first metal plate has magnetism. When the height difference is greater than the maximum lifting height of the suspension body 12, the controller controls the control switch to turn on, the first metal plate is energized and has magnetism, at which time, the first metal plate with magnetism attracts the second metal plate, so that the second metal plate drives the contact piece to move in a direction away from the lifting mechanism, thereby unlocking the lifting structure, so that the lifting mechanism can extend in a direction close to the suspension mounting plate 11.

[0081] Optionally, the lifting mechanism may include a lifting spring and a first sleeve and a second sleeve that are mutually sleeved, the first sleeve being connected to the spring mounting plate 123, the lifting spring being compressed and arranged in the first sleeve and the second sleeve along the thickness direction of the chassis, one end of which is connected to the bottom wall of the first sleeve, and the other end of which is connected to the bottom wall of the second sleeve. When the height difference is greater than the maximum lifting height of the suspension body 12, the control mechanism unlocks the lifting mechanism, and the lifting spring rebounds to make the second sleeve abut against the suspension mounting plate 11, and lift the suspension mounting plate 11.

[0082] Figure 5 It is another flowchart of a control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0083] like Figure 5 As shown, in some embodiments, before the step of controlling the height-raising device 13 of the suspension 10 to unlock and raising the chassis of the vehicle by the height-raising device 13, the following steps are also included:

[0084] S331, determining whether the vehicle distance is greater than a second vehicle distance threshold, wherein the second vehicle distance threshold is less than the first vehicle distance threshold.

[0085] The second vehicle distance threshold may be a pre-set dangerous vehicle distance value at which the host vehicle and the target vehicle are about to collide. The second vehicle distance threshold is smaller than the first vehicle distance threshold. For example, when the first vehicle distance threshold is 50m, the second vehicle distance threshold may be 10m.

[0086] S332: If yes, control the suspension body 12 to lift the chassis of the vehicle.

[0087] S333: If not, control the height-raising device 13 to unlock, and raise the chassis of the vehicle through the height-raising device 13.

[0088] It is understandable that, since the lifting height of the raising device 13 is greater than the maximum lifting height of the suspension body 12, when the lifting mechanism lifts the suspension mounting plate 11, the connection between the suspension body 12 and the suspension mounting plate 11 is destroyed. When the distance between the vehicle and the target vehicle is greater than the second distance threshold, since the vehicle and the target vehicle may not collide, the chassis of the vehicle can be raised by controlling the suspension body 12 without prematurely destroying the connection between the suspension body 12 and the suspension mounting plate 11. When the distance between the vehicle and the target vehicle is less than or equal to the second distance threshold, the vehicle and the target vehicle are about to collide. At this time, the raising device 13 can be controlled to be unlocked, and the chassis of the vehicle can be raised by the raising device 13 so that the height difference is less than or equal to the height threshold, thereby reducing collision deformation.

[0089] In this embodiment, before the height-raising device 13 of the suspension 10 is unlocked by controlling the vehicle, it is determined whether the distance between the vehicle and the target vehicle is greater than the second distance threshold. When the distance is greater than the second distance threshold, since the vehicle and the target vehicle may not collide, the chassis can be lifted by the suspension body 12 of the vehicle, thereby eliminating the need to prematurely destroy the connection between the suspension body 12 and the suspension mounting plate 11, thereby improving the stability of the vehicle during driving.

[0090] Figure 6 This is another structural schematic diagram of the control method for reducing vehicle impact deformation provided in some embodiments of the present application.

[0091] like Figure 6 As shown, in some embodiments, after the step of controlling the suspension 10 of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold, the step further includes:

[0092] S4: If the host vehicle and the target vehicle do not collide, determine whether the vehicle distance is greater than a first vehicle distance threshold.

[0093] Whether the vehicle collides with the target vehicle can be determined based on whether the airbag controller in the vehicle sends out a collision signal. When the controller obtains the collision signal from the airbag controller, it indicates that the vehicle collides with the target vehicle.

[0094] S5: If yes, control the suspension 10 of the vehicle to reset or control the vehicle to stop.

[0095] S6: If not, control the vehicle to decelerate until the vehicle distance is greater than the first vehicle distance threshold.

[0096] It is understandable that when the vehicle does not collide with the target vehicle and the distance between the vehicle and the target vehicle is greater than the first distance threshold, if the vehicle previously raised or lowered the chassis through the suspension body 12, the suspension body 12 of the vehicle is controlled to reset so that the vehicle can travel normally; if the vehicle previously raised the chassis through the raising device 13, the connection between the suspension body 12 and the suspension mounting plate 11 is destroyed after the raising device 13 raises the chassis, so the vehicle is controlled to stop and wait for rescue, thereby ensuring the safety of the people in the vehicle. When the vehicle does not collide with the target vehicle and the distance between the vehicle and the target vehicle is less than or equal to the first distance threshold, the vehicle is controlled to slow down until the distance is greater than the first distance threshold to avoid the risk of collision again.

[0097] In some embodiments, the control method further comprises the steps of:

[0098] Obtain real-time traffic information of the road ahead where the vehicle is traveling, and determine whether there are any obstacles on the road ahead based on the real-time traffic information.

[0099] The real-time traffic information may include the road conditions on which the vehicle is traveling, and may also include other information such as traffic congestion conditions and road speed limits, which are not specifically limited in this embodiment. The controller may obtain the real-time traffic information through the detection unit, and determine whether there are obstacles on the road ahead of the vehicle based on the real-time traffic information. For example, when there are obstacles such as stones or manhole covers on the road ahead, the controller may detect them in time through the detection unit.

[0100] If so, the height of the obstacle is obtained. If the height of the obstacle is greater than or equal to the height of the chassis of the vehicle, the suspension 10 of the vehicle is controlled to lift the chassis of the vehicle.

[0101] If not, control the vehicle to drive normally.

[0102] If there is an obstacle on the road ahead, the controller obtains the height of the obstacle through the detection unit and compares the height of the obstacle with the height of the chassis of the vehicle. If the height of the obstacle is greater than or equal to the height of the chassis of the vehicle, the suspension 10 of the vehicle is controlled to lift the chassis to avoid the obstacle and prevent the obstacle from damaging the chassis. If there is no obstacle on the road ahead, the vehicle drives normally.

[0103] In some embodiments, if the height of the obstacle is greater than or equal to the height of the chassis of the vehicle, the step of controlling the suspension 10 of the vehicle to lift the chassis of the vehicle includes:

[0104] If the height of the obstacle is greater than or equal to the chassis height of the vehicle, the real-time distance from the obstacle to the vehicle is obtained. When the real-time distance is less than or equal to the preset safety distance, the suspension 10 of the vehicle is controlled to lift the chassis.

[0105] In this embodiment, when the real-time distance from the vehicle to the obstacle is less than or equal to the preset safety distance, the suspension 10 of the vehicle is controlled to lift the chassis, which can prevent the vehicle from lifting the chassis too early and affecting the driving stability of the vehicle.

[0106] Furthermore, when the vehicle passes the obstacle, the suspension 10 of the vehicle is controlled to reset to improve the driving stability of the vehicle.

[0107] In some embodiments, the vehicle parameter information includes at least one of the ground height of the rear end of the vehicle near the ground, the width of the rear end of the vehicle near the ground, the ground height of the rear end of the vehicle far from the ground, the width of the rear end far from the ground, and the width between the two rear wheels; and / or, the vehicle parameter information includes at least one of the ground height of the front end of the vehicle near the ground, the width of the front end of the vehicle near the ground, the ground height of the front end far from the ground, the width of the front end far from the ground, and the width between the two front wheels.

[0108] It can be understood that the above widths can all be maximum widths. For example, the width of the rear end near the ground can be the maximum width of the rear end near the ground, the width of the rear end far from the ground can be the maximum width of the rear end far from the ground, the width between the two rear wheels can be the maximum width between the two rear wheels, the width of the front end near the ground can be the maximum width of the front end near the ground, the width of the front end far from the ground can be the maximum width of the front end far from the ground, and the width between the two front wheels can be the maximum width between the two front wheels. Of course, the above widths can also be minimum widths, which is not limited in this embodiment.

[0109] When the target vehicle is the vehicle in front of the vehicle in the driving direction, the target parameter information may include at least one of the ground height of the rear end of the vehicle near the ground, the width of the rear end of the vehicle near the ground, the ground height of the rear end of the vehicle far from the ground, the width of the rear end far from the ground, and the width between the two rear wheels; when the target vehicle is the vehicle behind the vehicle, the target parameter information may include at least one of the ground height of the front end of the vehicle near the ground, the width of the front end of the vehicle near the ground, the ground height of the front end of the vehicle far from the ground, the width of the front end far from the ground, and the width between the two front wheels.

[0110] In this embodiment, by setting the target parameter information to include at least one of the ground clearance height of the rear end near the ground, the width of the rear end near the ground, the ground clearance height of the rear end far from the ground, the width of the rear end far from the ground, and the width between the two rear wheels; and / or, the vehicle parameter information to include at least one of the ground clearance height of the front end near the ground, the width of the front end near the ground, the ground clearance height of the front end far from the ground, the width of the front end far from the ground, and the width between the two front wheels, the reliability of the controller in filtering the corresponding vehicle model information according to the target parameter information is improved.

[0111] In the second aspect, the embodiment of the present application also provides a control system for reducing vehicle impact deformation, including a detection unit, a suspension 10 and a controller, the controller including a memory and a processor, the memory stores computer program instructions that can be run on the processor, and when the computer program instructions are executed by the processor, the steps of any of the above control methods for reducing vehicle impact deformation are implemented. The control system provided by the embodiment of the present application has the technical effects of the technical solutions of the control methods in any of the above embodiments, and the structures that are the same or corresponding to the above embodiments and the explanations of terms are not repeated here.

[0112] The detection unit may include, but is not limited to, radar, camera, GPS (Global Positioning System) and other devices capable of detecting the target vehicle. Optionally, the location of the detection unit may be reasonably set according to actual conditions. For example, the detection unit may be set on the roof of the vehicle, or the detection unit may be set at the front bumper and / or rear bumper of the vehicle, which is not specifically limited in this embodiment of the application. The controller may be set on the chassis of the vehicle. Optionally, the controller may be reused as a body domain controller, a power domain controller, a chassis domain controller or other types of controllers, which is not specifically limited in this embodiment.

[0113] Optionally, the suspension 10 can be an air suspension, or a CDC (Continuous Damping Control Suspension) suspension, or the suspension 10 of the vehicle can also be other suspensions 10 that can realize chassis lifting. It can be understood that the air suspension 10 refers to a suspension structure that controls the suspension height by pneumatic components such as air compressors and air suspension airbags. The air suspension controls the suspension height by adjusting the pressure in the airbag to achieve a balance between comfort and handling. The CDC suspension is also called a magnetic power suspension. It is a suspension structure that controls the suspension height by using an electric motor and a hydraulic system. It controls the height of the suspension by using an electric motor to adjust the length of the hydraulic cylinder, thereby controlling the height of the suspension. It has high stability and handling, and can improve better comfort when driving at high speeds. Optionally, when the suspension 10 is an air suspension, the suspension body 12 can also include pneumatic components, and when the suspension 10 is a CDC suspension, the suspension body 12 can also include an electric motor.

[0114] Specifically, the processor may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0115] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory is a non-volatile solid-state memory.

[0116] The memory may include a read-only memory (ROM), a random access memory (RAM), a magnetic disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical or other physical / tangible memory storage device. Thus, typically, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to the first aspect of the present application.

[0117] The processor implements any one of the control methods for reducing vehicle impact deformation in the above embodiments by reading and executing computer program instructions stored in the memory.

[0118] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement any one of the above control methods for reducing vehicle impact deformation.

[0119] In a fourth aspect, an embodiment of the present application further provides a vehicle, which may include at least one of the following:

[0120] The control system as described in the second aspect;

[0121] The computer-readable storage medium as described in the third aspect will not be described in detail here.

[0122] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0123] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0124] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0125] The above reference is according to the method of the embodiment of the present application, the flow chart of the device (system) and the computer program product and / or the block diagram described various aspects of the present application.It should be understood that each square box in the flow chart and / or the block diagram and the combination of each square box in the flow chart and / or the block diagram can be realized by computer program instructions.These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the realization of the function / action specified in one or more square boxes of the flow chart and / or the block diagram.Such a processor can be but is not limited to a general-purpose processor, a special-purpose processor, a special application processor or a field programmable logic circuit.It can also be understood that each square box in the block diagram and / or the flow chart and the combination of the square boxes in the block diagram and / or the flow chart can also be realized by the dedicated hardware that performs the specified function or action, or can be realized by the combination of dedicated hardware and computer instructions.

[0126] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A control method for reducing vehicle impact deformation, characterized in that: Includes steps: Obtaining vehicle parameter information of a target vehicle and a distance from the target vehicle to the host vehicle; Filtering the vehicle model information corresponding to the vehicle parameter information in the database, and calculating the height difference between the longitudinal beam height of the vehicle corresponding to the vehicle model information and the longitudinal beam height of the vehicle; If the height difference is greater than the height threshold and the vehicle distance is less than or equal to the first vehicle distance threshold, the suspension of the host vehicle is controlled to raise or lower the chassis of the host vehicle so that the height difference is less than or equal to the height threshold.

2. The control method according to claim 1, characterized in that: The database includes a plurality of data groups, the plurality of data groups correspond to a plurality of road sections one by one, and the data in one of the data groups includes historical vehicle model information in the corresponding road section; The step of screening the vehicle model information corresponding to the vehicle parameter information in the database comprises: Acquire the section information of the target vehicle traveling section, and filter the data group corresponding to the target vehicle traveling section according to the section information; According to the vehicle parameter information, the vehicle model information corresponding to the vehicle parameter information is filtered in the data group corresponding to the target vehicle driving section.

3. The control method according to claim 1, characterized in that: The step of controlling the suspension of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold comprises: If the longitudinal beam height of the vehicle corresponding to the vehicle model information is less than the longitudinal beam height of the vehicle, controlling the suspension body of the suspension of the vehicle to lower the chassis of the vehicle; If the longitudinal beam height of the vehicle corresponding to the vehicle model information is greater than the longitudinal beam height of the vehicle, determining whether the height difference is greater than the maximum lifting height of the suspension body; If yes, controlling the raising device of the suspension to unlock, and raising the chassis of the vehicle by the raising device; If not, the suspension body is controlled to lift the chassis of the vehicle.

4. The control method according to claim 3, characterized in that: Before the step of controlling the suspension raising device to unlock and raising the chassis of the vehicle by the raising device, the step further includes: Determining whether the vehicle distance is greater than a second vehicle distance threshold, wherein the second vehicle distance threshold is less than the first vehicle distance threshold; If yes, control the suspension body to lift the chassis of the vehicle; If not, the height-increasing device is controlled to be unlocked, and the chassis of the vehicle is raised by the height-increasing device.

5. The control method according to claim 3, characterized in that: After the step of controlling the suspension of the vehicle to lift or lower the chassis of the vehicle so that the height difference is less than or equal to the height threshold, the step further includes: If the host vehicle and the target vehicle do not collide, determining whether the vehicle distance is greater than the first vehicle distance threshold; If yes, controlling the suspension of the vehicle to reset or controlling the vehicle to stop; If not, the vehicle is controlled to decelerate until the vehicle distance is greater than the first vehicle distance threshold.

6. The control method according to any one of claims 1 to 5, characterized in that: The control method further comprises the steps of: Acquire real-time traffic information of a road ahead on which the vehicle is traveling, and determine whether there is an obstacle on the road ahead based on the real-time traffic information; If yes, obtain the height of the obstacle, and if the height of the obstacle is greater than or equal to the height of the chassis of the vehicle, control the suspension of the vehicle to lift the chassis of the vehicle; If not, control the vehicle to run normally.

7. The control method according to any one of claims 1 to 5, characterized in that: The vehicle parameter information includes at least one of the height of the rear end of the vehicle from the ground, the width of the rear end of the vehicle from the ground, the height of the rear end of the vehicle from the ground, the width of the rear end of the vehicle from the ground, and the width between the two rear wheels; And / or, the vehicle parameter information includes at least one of the ground clearance height of the front end near the ground, the width of the front end near the ground, the ground clearance height of the front end far from the ground, the width of the front end far from the ground and the width between the two front wheels.

8. A control system for reducing vehicle impact deformation, characterized in that: include: Detection unit; Suspension; The controller comprises a memory and a processor, wherein the memory stores computer program instructions that can be run on the processor, and when the computer program instructions are executed by the processor, the steps of the control method for reducing vehicle impact deformation as described in any one of claims 1 to 7 are implemented.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the control method for reducing vehicle impact deformation according to any one of claims 1 to 7 is implemented.

10. A vehicle, characterized in that: Comprising a control system as claimed in claim 8.

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