Vehicle hood control method, vehicle control system, vehicle and storage medium

Abstract

The invention discloses a control method of a vehicle hood, a control system of the vehicle, the vehicle and a storage medium, and relates to the technical field of vehicles, the control method of the vehicle hood comprises the steps that when the vehicle has a collision risk, the front end of the hood is lifted according to a first condition; and lifting the rear end of the hood according to a second condition. According to the control method of the vehicle hood, when the vehicle has the collision risk, the front end of the hood is lifted according to the first condition, the rear end of the hood is lifted according to the second condition, the front end and / or the rear end of the hood can be lifted according to the first condition and the second condition, the hood control accuracy is improved, a target object in front of the vehicle is better protected, and the vehicle safety is improved. And especially when the front target object is a pedestrian. In addition, when it is determined that the collision risk exists, the front end and / or the rear end of the hood are / is lifted up in advance, and the situation that pedestrians are hurt after being collided subsequently can be better avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly to a control method for a vehicle hood, a control system for a vehicle, a vehicle, and a storage medium. Background Art

[0002] Pedestrians are vulnerable groups in road traffic and are more likely to be injured in traffic accidents. Therefore, special attention should be paid to the protection of pedestrians. In related technologies, when there is a risk of collision, the hood is directly lifted, and the way of lifting the hood is relatively single, which is not conducive to the protection of pedestrians and the accuracy of hood control. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a control method for a vehicle hood, which can better protect the object in front of the vehicle.

[0004] The present invention also provides a control system for a vehicle, which can better protect pedestrians.

[0005] The present invention also provides a vehicle, and when the control program of the vehicle is executed by a processor, the steps of the above-mentioned control method for a vehicle hood are realized.

[0006] The present invention also provides a storage medium for storing a control program for a vehicle, and when the control program for the vehicle is executed by a processor, the steps of the above-mentioned control method for a vehicle hood are realized.

[0007] According to an embodiment of the present invention, the control method for a vehicle hood includes: when there is a risk of collision for the vehicle, lifting the front end of the hood according to a first condition; and lifting the rear end of the hood according to a second condition.

[0008] According to an embodiment of the present invention, the control method for a vehicle hood can lift the front end and / or the rear end of the hood according to the first condition and the second condition when there is a risk of collision for the vehicle, so as to improve the accuracy of hood control and better protect the object in front of the vehicle, especially when the object in front is a pedestrian. In addition, when it is determined that there is a risk of collision, lifting the front end and / or the rear end of the hood in advance can better avoid the subsequent injury to the pedestrian if the pedestrian is hit.

[0009] According to some embodiments of the present invention, the method further includes: obtaining information about an object in front of the vehicle; and determining the risk of collision for the vehicle according to the movement information of the object and the movement information of the vehicle.

[0010] In some embodiments of the present invention, the method for determining the collision risk of the vehicle further includes: determining a predicted time to collision (TTC) of the target object and the vehicle according to the motion information of the target object and the motion information of the vehicle; when the predicted time to collision (TTC) is less than or equal to a collision threshold, the vehicle has a collision risk.

[0011] In some embodiments of the present invention, the first condition is that the height of the target object is not higher than a preset height, and the second condition is that the height of the target object is higher than the preset height.

[0012] In some embodiments of the present invention, when the target object is a pedestrian, the first condition is a child, and the second condition is an adult.

[0013] In some embodiments of the present invention, the preset height is adjusted according to the height of the vehicle model.

[0014] In some embodiments of the present invention, when the target object satisfies the second condition, the control method further includes: obtaining the speed of the vehicle; when the speed of the vehicle is less than or equal to a preset speed, the rear end of the engine hood is lifted to a first height; when the speed of the vehicle is greater than the preset speed, the rear end of the engine hood is lifted to a second height, and the second height is greater than the first height.

[0015] In some embodiments of the present invention, the rear end of the engine hood being lifted to the second height includes: the rear end of the engine hood is first lifted to the first height and then lifted to the second height.

[0016] In some embodiments of the present invention, when the target object satisfies the first condition, the control method further includes: obtaining the speed of the vehicle; when the speed of the vehicle is less than or equal to a preset speed, the front end of the engine hood is lifted to a third height; when the speed of the vehicle is greater than the preset speed, the front end of the engine hood is lifted to a fourth height, and the fourth height is greater than the third height.

[0017] In some embodiments of the present invention, the front end of the engine hood being lifted to the fourth height includes: the front end of the engine hood is first lifted to the third height and then lifted to the fourth height.

[0018] In some embodiments of the present invention, the preset speed is 35 km / h - 45 km / h.

[0019] In some embodiments of the present invention, when the target object satisfies the second condition, the control method further includes: determining a collision; determining that the landing point of the pedestrian's head does not fall on the engine hood; adjusting the vehicle height through the active suspension so that the landing point of the pedestrian's head falls on the engine hood and / or the airbag at the rear end of the engine hood is opened.

[0020] In some embodiments of the present invention, adjusting the vehicle height through the active suspension so that the pedestrian's head landing point falls on the hood and / or the airbag at the rear end of the hood opens includes: when adjusting the vehicle height can make the pedestrian's head landing point fall on the hood, adjusting the vehicle height through the active suspension; when adjusting the vehicle height cannot make the pedestrian's head landing point fall on the hood, the airbag at the rear end of the hood opens.

[0021] In some embodiments of the present invention, when the airbag opens, the airbag covers the windshield crossbeam and the A-pillar.

[0022] In some embodiments of the present invention, when the airbag opens, the airbag has a hollow part opposite to the driver's area.

[0023] In some embodiments of the present invention, it further includes: the passive recognition module of the vehicle determines whether a collision occurs; when the vehicle does not collide, the hood performs a reset.

[0024] In some embodiments of the present invention, the completion time of the hood reset is 3s - 5s after the hood is lifted.

[0025] In some embodiments of the present invention, when it is determined that no collision occurs after a preset time after the hood is lifted, the hood immediately resets.

[0026] In some embodiments of the present invention, the preset time is 2.5s - 3.5s.

[0027] The vehicle control system according to an embodiment of the present invention includes: a judgment and decision-making module for judging whether there is a collision risk; an active hood execution module for lifting the front end of the hood according to a first condition and lifting the rear end of the hood according to a second condition when there is a collision risk.

[0028] The vehicle control system according to an embodiment of the present invention, the judgment and decision-making module judges whether there is a collision risk. When there is a collision risk, the active hood execution module lifts the front end of the hood according to a first condition and lifts the rear end of the hood according to a second condition, improving the accuracy of hood control and better protecting the object in front of the vehicle, especially when the object in front is a pedestrian. In addition, when it is determined that there is a collision risk, lifting the front end and / or the rear end of the hood in advance can better avoid the subsequent injuries suffered by the pedestrian if hit.

[0029] In some embodiments of the present invention, it further includes: an active recognition module for obtaining information about the object in front of the vehicle, and the judgment and decision-making module for judging whether there is a collision risk according to the information obtained by the active recognition module.

[0030] In some embodiments of the present invention, it further includes: a passive recognition module, which is arranged at the front end of the vehicle and is used to judge whether a collision occurs.

[0031] In some embodiments of the present invention, the active hood execution module is further used to reset the hood when the passive recognition module judges that no collision occurs.

[0032] In some embodiments of the present invention, the active hood execution module is further used to open the airbag at the rear end of the hood when the passive recognition module judges that a collision occurs and the landing point of the pedestrian's head does not fall on the hood.

[0033] In some embodiments of the present invention, it further includes: an active suspension adjustment module, which is used to lift the height of the vehicle according to the information obtained by the active recognition module when the active hood execution module lifts the rear end of the hood, the passive recognition module judges that a collision occurs, the target is a pedestrian, and the landing point of the pedestrian's head does not fall on the hood.

[0034] The vehicle according to an embodiment of the present invention includes: a vehicle body, a hood, a memory, a processor, and a control program of the vehicle stored on the memory and executable on the processor, wherein the hood is arranged on the upper side of the front end of the vehicle body; when the control program of the vehicle is executed by the processor, the steps of the control method of the vehicle hood as described above are realized.

[0035] The vehicle according to an embodiment of the present invention realizes the steps of the above-mentioned control method of the vehicle hood when the control program of the vehicle is executed by the processor, improves the accuracy of the hood control, and better protects the target in front of the vehicle, especially when the target in front is a pedestrian. In addition, when it is determined that there is a risk of collision, lifting the front end and / or the rear end of the hood in advance can better avoid the subsequent injuries suffered by the pedestrian if hit.

[0036] The storage medium according to an embodiment of the present invention stores a control program of the vehicle, and when the control program of the vehicle is executed by the processor, the steps of the control method of the vehicle hood as described above are realized.

[0037] The storage medium according to an embodiment of the present invention realizes the steps of the above-mentioned control method of the vehicle hood when the stored control program of the vehicle is executed by the processor, improves the accuracy of the hood control, and better protects the target in front of the vehicle, especially when the target in front is a pedestrian. In addition, when it is determined that there is a risk of collision, lifting the front end and / or the rear end of the hood in advance can better avoid the subsequent injuries suffered by the pedestrian if hit.

[0038] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0039] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where: Figure 1 is a schematic diagram of the composition of a vehicle control system according to an embodiment of the present invention; Figure 2 is a front view of a vehicle according to an embodiment of the present invention; Figure 3 is a schematic diagram of the front end of the vehicle hood being lifted according to an embodiment of the present invention; Figure 4 is a schematic diagram of the rear end of the vehicle hood being lifted according to an embodiment of the present invention; Figure 5 is a diagram of the airbag ignition area for determining the landing position based on the active recognition signal; Figure 6 is a schematic flow diagram of a method for controlling a vehicle hood according to an embodiment of the present invention.

[0040] Reference Signs in the Drawings: 100, vehicle; 1, active recognition module; 101, camera; 102, radar; 2, judgment and decision-making module; 201, ECU controller; 3, passive recognition module; 301, pressure pipe; 302, collision sensor; 4, active hood execution module; 401, hood lock; 403, hinge; 404, jack; 405, airbag actuator; 5, active suspension adjustment module; 501, active suspension height adjustment execution system; 502, sensor; 6, vehicle body; 7, hood. Detailed Description of the Embodiments

[0041] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The following refers to Figure 6 Describe the control method of the vehicle 100 according to an embodiment of the present invention.

[0044] As Figure 6 shown, the control method of the vehicle 100 according to an embodiment of the present invention includes: When there is a collision risk for the vehicle 100, raise the front end of the hood 7 according to the first condition; raise the rear end of the hood 7 according to the second condition.

[0045] Wherein, after the hood 7 is raised, the hood 7 is spaced apart from at least some of the components below the hood 7, avoiding hard contact between the hood 7 and the components below the hood 7, which can enable the hood 7 to deform downward when impacted from above, protecting the target object in front of the impacted vehicle 100.

[0046] In the present invention, when there is a collision risk for the vehicle, when the first condition is met, raise the front end of the hood 7 to protect the target object in front of the vehicle 100 through the front end of the hood 7. When the second condition is met, raise the rear end of the hood 7 to protect the target object in front of the vehicle 100 through the rear end of the hood 7. The front end and / or the rear end of the hood 7 can be raised according to the first condition and the second condition, improving the accuracy of controlling the hood 7 and better protecting the target object in front of the vehicle, especially when the target object in front is a pedestrian.

[0047] In addition, when a collision risk is determined, the front end and / or the rear end of the hood 7 are lifted in advance to avoid subsequent injuries to pedestrians if they are hit.

[0048] According to the control method of the hood 7 of the vehicle 100 according to an embodiment of the present invention, when there is a collision risk for the vehicle 100, the front end of the hood 7 is lifted according to the first condition, and the rear end of the hood 7 is lifted according to the second condition. The front end and / or the rear end of the hood 7 can be lifted according to the first condition and the second condition, which can improve the accuracy of controlling the hood 7 and better protect the object in front of the vehicle, especially when the object in front is a pedestrian. In addition, when a collision risk is determined, the front end and / or the rear end of the hood 7 are lifted in advance, which can better avoid subsequent injuries to pedestrians if they are hit.

[0049] In some embodiments of the present invention, such as Figure 1 and Figure 2 shown, the control method of the vehicle hood further includes: Obtain the information of the object in front of the vehicle 100; as Figure 1 and Figure 2 shown, the vehicle 100 may be provided with an active recognition module 1. The active recognition module 1 may include a camera 101 and a radar 102 provided in front of the vehicle 100. The camera 101 and the radar 102 can collect the information of the object in front of the vehicle 100. For example, the radar 102 can collect the vehicle distance and speed in front, the distance between the vehicle 100 and the pedestrian in front, and the camera 101 can collect the pedestrian category (including adults and children), the movement speed of the pedestrian, the collision speed, and the pedestrian head landing trajectory described below, etc.

[0050] According to the movement information of the object and the movement information of the vehicle 100, determine the collision risk of the vehicle. As Figure 1 and Figure 2 shown, the vehicle 100 may have a judgment and decision-making module 2. The judgment and decision-making module 2 may include an ECU (Electronic Control Unit) controller 201, which performs algorithm calculations based on the object information detected by the camera 101 and the radar 102, and evaluates whether there is a collision risk according to the recognition result.

[0051] In some embodiments of the present invention, the method for determining the collision risk of the vehicle 100 further includes: According to the movement information of the object and the movement information of the vehicle 100, determine the predicted time to collision TTC between the object and the vehicle; When the predicted time to collision TTC is less than or equal to the collision threshold, the vehicle has a collision risk.

[0052] For example, through the development of the fusion algorithm of the camera 101 and the radar 102, the subsequent actual scene is identified based on the existing algorithm, and the judgment is made through the set collision threshold. When the TTC is less than or equal to the collision threshold, it is determined that there is a collision risk between the vehicle 100 and the pedestrian. On the contrary, when the TTC is greater than the collision threshold, it is determined that there is no collision risk between the vehicle 100 and the pedestrian.

[0053] In some embodiments of the present invention, the first condition is that the height of the target object is not higher than the preset height, and the second condition is that the height of the target object is higher than the preset height. The height of the target object that satisfies the second condition is higher than the height of the target object that satisfies the first condition. The height of the target object that satisfies the first condition is lower, and the collision positions are mostly concentrated at the front end of the hood 7. While the height of the target object that satisfies the second condition is higher, and the collision positions are mostly concentrated at the rear end of the hood 7. When the target object satisfies the second condition, the rear end of the hood 7 is lifted, so that the rear end of the hood 7 is spaced apart from the components below the hood 7. The rear end of the hood 7 can be deformed downward when the target object impacts, better protecting the target object being hit; when the target object satisfies the first condition, the front end of the hood 7 is lifted, so that the front end of the hood 7 is spaced apart from the components below the hood 7. The front end of the hood 7 can be deformed downward when the target object impacts, better protecting the target object being hit. Thus, the front end or the rear end of the hood 7 can be lifted according to the height of the target object, better realizing the protection for target objects of different heights.

[0054] Before lifting the hood 7, the control method of the hood 7 of the vehicle 100 may further include: determining whether the target object is a pedestrian. When it is determined that the vehicle 100 has a collision risk, continue to determine whether the target object is a pedestrian. When it is determined that the target object is a pedestrian, perform subsequent actions. When the target object is a non-pedestrian such as an animal, an obstacle, or another vehicle 100, etc., no subsequent actions are performed. When it is determined that there is a collision risk and the target object is a pedestrian, the front end and / or the rear end of the hood 7 are lifted in advance to avoid the subsequent injury if the pedestrian is hit. In addition, when it is determined that the target object is a pedestrian, the operation of lifting the front end and / or the rear end of the hood 7 can reduce the actions when the target object is a non-pedestrian, reduce the probability of mis-triggering, and reduce the maintenance cost after the hood 7 is damaged due to mis-triggering.

[0055] Among them, the vehicle 100 may have a perception system module, and the database of the perception system module is developed and identified based on pedestrians of different body shapes, different ages, different genders, and different collision actions. The target object information in the complete scene after the front recognition is transmitted to the judgment and decision-making module 2.

[0056] In some embodiments of the present invention, when the target object is a pedestrian, the first condition is a child, and the second condition is an adult. It can be understood that the front end and / or the rear end of the hood are lifted according to the pedestrian category, that is, adults and children. Specifically, when the pedestrian category is an adult, the rear end of the hood 7 is lifted; when the pedestrian category is a child, the front end of the hood 7 is lifted.

[0057] Consider the active signal to distinguish between adults and children and the head landing areas of pedestrians, and thereby raise the hood 7 at different positions. Due to their lower height, the head collision positions of children mostly concentrate on the front end of the hood 7, while adults are taller and their head collision positions mostly concentrate on the rear end of the hood 7. When the pedestrian category is an adult, raise the rear end of the hood 7 so that the rear end of the hood 7 is spaced apart from the components below the hood 7. The rear end of the hood 7 can deform downward when hit by a pedestrian's head, better protecting the head of the hit adult; when the pedestrian category is a child, raise the front end of the hood 7 so that the front end of the hood 7 is spaced apart from the components below the hood 7. The front end of the hood 7 can deform downward when hit by a pedestrian's head, better protecting the head of the hit child. Thus, the front end or the rear end of the hood 7 can be raised according to adults and children, better adapting the variable area of the hood 7 to the impact position of the pedestrian's head and better protecting adults and children.

[0058] In addition, when the height of the pedestrian is higher than a preset height, determine that the pedestrian category is an adult; when the height of the pedestrian is not higher than the preset height, determine that the pedestrian category is a child.

[0059] It can be understood that judging whether a pedestrian is an adult or a child from the height of the pedestrian. Specifically, when the height of the pedestrian is higher than the preset height, judge as an adult, and when the height of the pedestrian is not higher than the preset height, judge as a child. Thus, the landing position of the pedestrian's head can be better judged according to the pedestrian category, and the front end or the rear end of the hood 7 is raised according to the landing position.

[0060] In some embodiments of the present invention, the preset height is adjusted according to the vehicle model. When the vehicle model is a low-slung vehicle, the preset height is relatively low, and when the vehicle model is a vehicle with a relatively high height, the preset height is relatively high, which can ensure that pedestrians with the preset height hit the hood 7 rather than the bumper of the vehicle 100.

[0061] For example, when the vehicle 100 is an SUV or an off-road vehicle, the preset height can be 1.4 m. When the pedestrian height is higher than 1.4 m, the head landing position of the pedestrian after being hit generally lies on the rear end of the hood 7. When the pedestrian height is less than or equal to 1.4 m, the head landing position of the pedestrian after being hit generally lies on the front end of the hood 7. Therefore, when the pedestrian height is higher than 1.4 m, determine that the pedestrian category is an adult, and when the pedestrian height is not higher than, that is, less than or equal to 1.4 m, determine that the pedestrian category is a child, which can better protect the pedestrian.

[0062] In addition, the camera 101 can identify information such as the facial features and gait features of the pedestrian, and based on the above information, can assist in judging whether the pedestrian category is an adult or a child.

[0063] In some embodiments of the present invention, such asFigure 6 As shown, when the target object meets the second condition, the control method further includes: Obtain the speed of the vehicle; When the speed of the vehicle is less than or equal to the preset speed, the rear end of the hood is lifted to the first height; When the speed of the vehicle is greater than the preset speed, the rear end of the hood is lifted to the second height, and the second height is greater than the first height.

[0064] The higher the lifting height of the hood 7, the greater the distance between the hood 7 and the components below the hood 7, and the greater the space for the upper part of the hood 7 to deform downward after being impacted. When the speed of the vehicle 100 is relatively low, the force exerted by the target object such as a pedestrian hitting the hood 7 is relatively small. When the speed of the vehicle 100 is relatively high, the force exerted by the target object such as a pedestrian hitting the hood 7 is relatively large. In the present invention, the height-lifting control based on speed differentiation can maximize the reduction of the protection injury value of the target object such as a pedestrian and improve the protection performance of the target object such as a pedestrian at high speeds. When the target object meets the second condition, when the speed of the vehicle 100 is less than or equal to the preset speed, control the rear end of the hood 7 to be lifted to the first height. When the speed of the vehicle 100 is greater than the preset speed, control the rear end of the hood 7 to be lifted to the second height, which can make the lifting height of the rear end of the hood 7 larger when the speed of the vehicle 100 is higher, better adapt to the impact force exerted on the hood 7 after the target object such as a pedestrian's head hits, so that the deformation of the hood 7 is more adapted to the impact force, and better protect the head of the target object such as a pedestrian. Therefore, adjusting the lifting height according to the vehicle speed can more accurately respond to collision scenarios at different speeds, ensuring both the practicability at low speeds and providing stronger protection at high speeds.

[0065] In some embodiments of the present invention, the rear end of the hood being lifted to the second height includes: The rear end of the hood is first lifted to the first height and then lifted to the second height.

[0066] Thus, the lifting of the first height can be achieved through the mechanism for lifting the rear end of the hood 7, and the lifting of the second height can also be achieved, and the first height and the second height can be accurately reached.

[0067] In some embodiments of the present invention, as Figure 6 shown, when the target object meets the first condition, the control method further includes: Obtain the speed of the vehicle; When the speed of the vehicle is less than or equal to the preset speed, the front end of the hood is lifted to the third height; When the speed of the vehicle is greater than the preset speed, the front end of the hood is lifted to the fourth height, and the fourth height is greater than the third height.

[0068] The higher the lifting height of the hood 7, the greater the distance between the hood 7 and the components below the hood 7, and the greater the space for the upper part of the hood 7 to deform downward after being impacted. When the speed of the vehicle 100 is relatively low, the force exerted by an object such as a pedestrian hitting the hood 7 is relatively small. When the speed of the vehicle 100 is relatively high, the force exerted by an object such as a pedestrian hitting the hood 7 is relatively large. In the present invention, when the object meets the first condition, when the speed of the vehicle 100 is less than or equal to the preset speed, the front end of the hood 7 is controlled to lift to the third height. When the speed of the vehicle 100 is greater than the preset speed, the front end of the hood 7 is controlled to lift to the fourth height, which can make the lifting height of the front end of the hood 7 greater when the speed of the vehicle 100 is relatively high, better adapting to the impact force exerted on the hood 7 after an object such as a pedestrian's head hits it, so that the deformation of the hood 7 is more adapted to the impact force and better protects the head of an object such as a pedestrian.

[0069] In some embodiments of the present invention, the front end of the hood being lifted to the fourth height includes: The front end of the hood is first lifted to the third height and then lifted to the fourth height.

[0070] Thus, the third height can be lifted by the mechanism for lifting the front end of the hood 7, and the fourth height can also be lifted, and the third height and the fourth height can be accurately reached.

[0071] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the vehicle 100 is provided with an active hood execution module 4. The active hood execution module 4 includes a front-end lifting mechanism and a rear-end lifting mechanism. When the ECU controller 201 determines that the vehicle 100 has a collision risk, it synchronously transmits the identification information to the active hood execution module 4. The active hood execution module 4 executes the lifting mode of the hood 7 according to the first condition and the second condition.

[0072] Specifically, when the object meets the first condition, the ECU controller 201 transmits a signal to the front-end lifting mechanism of the active hood execution module 4. As Figures 1 - 3 shown, the front-end lifting mechanism can be a hood lock 401. When it determines that the speed of the vehicle 100 is less than or equal to the preset speed, the ECU controller 201 transmits a signal for lifting to the third height to the active hood execution module 4. After the hood lock 401 is unlocked, the front end of the hood 7 is lifted to the third height. When it determines that the speed of the vehicle 100 is higher than the preset speed, the ECU controller 201 transmits a signal for lifting to the fourth height to the active hood execution module 4. After the hood lock 401 is unlocked, the front end of the hood 7 continues to be lifted to the fourth height after being lifted to the third height. Among them, the front end of the hood 7 is lifted to the specified height and then maintained stable.

[0073] When the target object meets the second condition, the ECU controller 201 transmits a signal to the rear-end lifting mechanism of the active hood execution module 4, such as Figure 1 , Figure 2 and Figure 4 shown. The rear-end lifting mechanism can be a hinge 403. When it is determined that the speed of the vehicle 100 is less than or equal to the preset speed, the ECU controller 201 transmits a signal for lifting to the first height to the active hood execution module 4. After the hinge 403 is unlocked, it cooperates with the jack 404 to actuate and lift the rear end of the hood 7 to the first height; when it is determined that the speed of the vehicle 100 is higher than the preset speed, the ECU controller 201 transmits a signal for lifting to the second height to the active hood execution module 4. After the hinge 403 is unlocked, it cooperates with the jack 404 to lift the rear end of the hood 7 to the second height. Among them, after the rear end of the hood 7 is lifted to the specified height, it maintains stability.

[0074] Optionally, the preset speed is 35 km / h - 45 km / h. For example, the preset speed can be 36 km / h, 37 km / h, 38 km / h, 39 km / h, 40 km / h, 41 km / h, 42 km / h, 43 km / h or 44 km / h, etc. In a specific example of the present invention, the preset speed is 40 km / h.

[0075] In some embodiments of the present invention, after the lifting mechanism lifts to the specified height and remains stable, it is further determined whether a collision occurs. As Figure 1 and Figure 2 shown, the vehicle 100 may be provided with a passive recognition module 3. The passive recognition module 3 is connected to the ECU controller 201. The passive recognition module 3 may include a pressure tube 301 and a collision sensor 302. The ECU controller 201 determines whether a collision occurs by judging the signals of the pressure tube 301 and the collision sensor 302 through a collision threshold.

[0076] Among them, the pressure tube 301 and the collision sensor 302 are arranged at the front end of the vehicle 100. The pressure change in the pressure tube 301 is conducted to the pressure sensors at both ends to form a pressure signal. When a collision occurs, the pressure will change accordingly. When the pressure change is greater than or equal to the set collision threshold, it is determined that a collision has occurred. On the contrary, when the pressure change is less than the set collision threshold, it is determined that no collision has occurred. Or, the collision sensor 302 can be an acceleration sensor, which can be arranged on the front bumper or a deformable metal bracket, and judges whether a collision occurs by sensing the acceleration change during the collision of the front bumper. When the acceleration change value is greater than or equal to the set collision threshold, it is determined that a collision has occurred. On the contrary, when the acceleration change value is less than the set collision threshold, it is determined that no collision has occurred.

[0077] In some embodiments of the present invention, as Figure 6As shown, when the target object meets the second condition and the target object is a pedestrian, the control method further includes: Determine that a collision has occurred; Determine that the landing point of the pedestrian's head does not fall on the hood; Adjust the vehicle height through the active suspension so that the landing point of the pedestrian's head falls on the hood and / or the airbag at the rear end of the hood is opened.

[0078] For adults with a relatively high height, the head collision landing point may appear in the seam area between the hood 7 and the windshield, the windshield area, or the A-pillar area, etc. Therefore, only raising the rear end of the hood 7 has limited protection for adults with a relatively high height. The ECU controller 201 can predict the movement trajectory of the pedestrian through the camera 101, etc., and judge whether the landing point of the pedestrian's head is on the hood 7. If it is determined that the landing point of the pedestrian's head is not on the hood 7, the ECU controller 201 controls the ignition signal of the airbag at the rear end of the hood 7 to be sent to the airbag actuator 405, and the airbag actuator 405 unfolds the airbag after receiving the ignition signal. When the adult is relatively tall, the head of the pedestrian can be protected by the airbag, achieving better protection for the pedestrian. The actual scenarios covered by the present invention are more comprehensive, which can maximize the improvement of pedestrian protection performance and achieve better protection effects for pedestrians.

[0079] Among them, the fusion algorithm of the camera 101 and the radar 102 can identify the height of the pedestrian. Combining with the vehicle height information, the position information of the landing point of the pedestrian's head can be obtained. When it is determined that the position of the landing point of the head exceeds the edge line of the hood 7, it is determined that the position of the landing point of the head is not on the hood 7, and then the airbag protection is activated.

[0080] In addition, when it is determined that the landing point of the pedestrian's head is not on the hood 7, the height of the vehicle 100 can also be adjusted through the active suspension. Specifically, the height of the vehicle 100 can be raised so that the landing point of the pedestrian's head is on the hood 7, and the head of the pedestrian is protected by the deformation at the rear end of the hood 7. First, after the hood 7 is activated, the injury value to the pedestrian has been greatly reduced. Although the airbag protection can play a greater role in protecting the pedestrian, it is a one-time product, and the later maintenance cost of the vehicle 100 is also relatively high. Therefore, the function of the active suspension can reduce the head injury on the one hand, and on the other hand, it can also reduce the maintenance cost caused by the vehicle 100 hitting the windshield area.

[0081] When it is determined that the vehicle 100 has a collision risk and the position of the head impact landing point is identified, the ECU controller 201 transmits a signal to the sensor 502, and the active suspension height adjustment execution system 501 automatically adjusts the suspension height. By adjusting the height through the active suspension, the head impact landing point can be transferred from the windshield or the seam between the hood 7 and the windshield to the hood 7. If the head impact landing point cannot be adjusted to the optimized area of the hood 7, the active suspension height adjustment is not activated.

[0082] In some embodiments of the present invention, adjusting the vehicle height through the active suspension so that the pedestrian's head landing point falls on the hood and / or the airbag at the rear end of the hood opens, including: When adjusting the vehicle height can make the pedestrian's head landing point fall on the hood, adjust the vehicle height through the active suspension; When adjusting the vehicle height cannot make the pedestrian's head landing point fall on the hood, control the airbag at the rear end of the hood to open.

[0083] When the pedestrian's head landing point does not fall on the hood 7, first judge based on the trajectory whether it is possible to make the pedestrian's head landing point fall on the hood 7 within the height adjustment range of the active suspension. If the pedestrian's head landing point can be made to be on the hood 7, start the active suspension adjustment and adjust the height of the vehicle 100 through the active suspension. On the contrary, if the pedestrian's head landing point cannot fall on the hood 7 within the active suspension height adjustment range and can only hit the windshield area, starting the active suspension adjustment is not very meaningful. At this time, only need to control the airbag at the rear end of the hood 7 to open and detonate the airbag area in order to achieve the effect of protecting the pedestrian.

[0084] Further, as Figure 5 shown, when the airbag opens, the airbag covers the windshield crossbeam and the A-pillar and has a hollow part opposite to the driver's area. This can make the airbag better cover the windshield and the A-pillar and reserve an observation area for the driver to ensure driving safety and avoid collisions from happening again.

[0085] In some embodiments of the present invention, as Figure 6 shown, the control method further includes: The passive recognition module of the vehicle judges whether a collision occurs; When the vehicle does not have a collision, the hood performs a reset.

[0086] The front-end lifting mechanism is a retractable hood lock 401. When the pedestrian category is a child, after the front end of the hood 7 is lifted to the specified height, if it is determined that there is no collision, the ECU controller 201 transmits a signal to the hood lock 401 and the actuator retracts, that is, the front end of the hood 7 automatically resets and the vehicle 100 continues to drive normally.

[0087] The rear-end lifting mechanism is a retractable hinge 403. When the pedestrian category is an adult, after the rear end of the hood 7 is lifted to the specified height, if it is determined that there is no collision, the ECU controller 201 transmits a signal to the hinge 403 and the actuator retracts, that is, the rear end of the hood 7 automatically resets. Synchronously, if the suspension self-adjustment is started, the active suspension adjusts the height of the vehicle 100 to the normal driving state and the vehicle 100 continues to drive normally.

[0088] The hood 7 is reset to complete time 3s-5s after the hood 7 is lifted. No collision occurs within the time when a collision may occur, and the hood 7 is quickly reset, which can ensure the safety of the vehicle 100.

[0089] Alternatively, after the hood 7 is lifted, it is determined whether a collision occurs after a preset time. If no collision occurs, the hood 7 is immediately reset. The preset time is 2.5s-3.5s. If no collision occurs within the time when a collision may occur, the hood 7 is quickly reset to ensure the safety of the vehicle 100.

[0090] Optionally, the preset time may be 2.5s, 2.7s, 3s, 3.3s or 3.5s. In a specific example, the preset time is 3s.

[0091] In the related technology, the existing models equipped with active hoods mostly use a gunpowder-type rear-end lifting mechanism. However, one of the disadvantages of the traditional gunpowder-type active hood is that it is difficult to achieve secondary use. When the lifting mechanism is triggered, it needs to be replaced later, which increases the maintenance cost and also affects the customer's driving experience during road driving.

[0092] In the present invention, the hood 7 can be automatically reset after being lifted to a specified height through the hinge 403 or the hood lock 401 and when its corresponding controller is normal when no collision occurs, that is, the hinge 403 and the hood lock 401 are both reversible, which can effectively solve the problem of secondary usability.

[0093] In addition, the present invention can detect pedestrians based on active signals such as radar 102 and camera 101, and combine passive signals to secondary identify whether a collision accident has occurred. On the one hand, it can effectively reduce the false explosion rate of the hood 7; on the other hand, because the hood 7 can be automatically reset, even if a false explosion occurs, the hood 7 can still be reset and used normally, thereby reducing the subsequent maintenance cost of the hood 7 and alleviating consumers' after-sales complaints.

[0094] The following describes a control system of the vehicle 100 according to an embodiment of the present invention.

[0095] like Figure 1 and Figure 2 As shown, the control system of the vehicle 100 according to the embodiment of the present invention includes a judgment and decision module 2 and an active hood execution module 4 .

[0096] The judgment and decision module 2 is used to judge whether there is a collision risk; the judgment and decision module 2 may include an ECU (Electronic Control Unit) controller 201 .

[0097] The active hood execution module 4 is configured to lift the front end of the hood according to a first condition and the rear end of the hood according to a second condition when there is a risk of collision. The active hood execution module 4 includes a front-end lifting mechanism and a rear-end lifting mechanism. The front-end lifting mechanism may be a hood lock 401 for lifting the front end of the hood 7, and the rear-end lifting mechanism may be a hinge 403 for lifting the rear end of the hood 7.

[0098] For the control system of the vehicle 100 according to an embodiment of the present invention, the judgment and decision-making module 2 determines whether there is a risk of collision. When there is a risk of collision, the active hood execution module 4 lifts the front end of the hood 7 according to a first condition and the rear end of the hood 7 according to a second condition, improving the accuracy of controlling the hood 7 and better protecting the object in front of the vehicle, especially when the object in front is a pedestrian. Additionally, when it is determined that there is a risk of collision, lifting the front end and / or the rear end of the hood 7 in advance can better avoid the injuries suffered by the subsequent pedestrian after being hit.

[0099] In some embodiments of the present invention, the control system of the vehicle 100 further includes an active recognition module 1. The active recognition module 1 is configured to obtain information about the object in front of the vehicle 100, and the judgment and decision-making module 2 is configured to determine whether there is a risk of collision based on the information obtained by the active recognition module 1. The active recognition module 1 may include a camera 101 and a radar 102 disposed in front of the vehicle 100. The camera 101 and the radar 102 can collect information about the object in front of the vehicle 100. For example, the radar 102 can collect the distance and speed of the vehicle in front, the distance between the vehicle 100 and the pedestrian in front, and the camera 101 can collect the pedestrian category (including adults and children), the movement speed of the pedestrian, the collision speed, and the pedestrian head landing trajectory described below. The judgment and decision-making module 2 can perform algorithm calculations based on the object information detected by the camera 101 and the radar 102, and evaluate whether there is a risk of collision and determine the pedestrian category according to the recognition result.

[0100] In some embodiments of the present invention, the control system of the vehicle 100 further includes a passive recognition module 3. The passive recognition module 3 is disposed at the front end of the vehicle 100 and is configured to determine whether a collision has occurred. The passive recognition module 3 is connected to the ECU controller 201. The passive recognition module 3 may include a pressure tube 301 and a collision sensor 302. The ECU controller 201 determines whether a collision has occurred by judging the signals of the pressure tube 301 and the collision sensor 302 through a collision threshold.

[0101] In some embodiments of the present invention, the active hood execution module 4 is further configured to reset the hood 7 when the passive recognition module 3 determines that no collision has occurred. The front-end lifting mechanism is a recyclable hood lock 401, and the rear-end lifting mechanism is a recyclable hinge 403. If it is determined that no collision has occurred, the ECU controller 201 transmits a signal to the active hood execution module 4, and the actuator retracts, that is, the hood 7 automatically resets. When no collision occurs, the hood 7 can be automatically reset after being lifted to a specified height through the hinge 403 or the hood lock 401 and when their respective controllers are normal, that is, both the hinge 403 and the hood lock 401 are reversible, which can effectively solve the problem of secondary usability.

[0102] In some embodiments of the present invention, the active hood execution module 4 is further configured to open the airbag at the rear end of the hood 7 when the passive recognition module 3 determines that a collision has occurred and the landing point of the pedestrian's head does not fall on the hood 7. When an adult is relatively tall and the head collision position is on the windshield and the A-pillar, the airbag can protect the pedestrian's head to achieve better protection for the pedestrian.

[0103] In some embodiments of the present invention, the control system of the vehicle 100 further includes an active suspension adjustment module 5. The active suspension adjustment module 5 is configured to lift the height of the vehicle 100 according to the information obtained by the active recognition module 1 when the active hood execution module 4 lifts the rear end of the hood 7 and the passive recognition module 3 determines that the collision target is a pedestrian and the landing point of the pedestrian's head does not fall on the hood 7.

[0104] When it is determined that the landing point of the pedestrian's head is not on the hood 7, the height of the vehicle 100 can also be adjusted by the active suspension. Specifically, the height of the vehicle 100 can be lifted so that the landing point of the pedestrian's head is on the hood 7, and the rear end of the hood 7 is deformed to protect the pedestrian's head. First, when the hood 7 is activated, the injury value to the pedestrian has been greatly reduced. Although the airbag protection can play a great role in protecting the pedestrian, it is a one-time product, and the later maintenance cost of the vehicle 100 is also relatively high. Therefore, the role of the active suspension can reduce the head injury on the one hand and reduce the maintenance cost caused by the vehicle 100 hitting the windshield area on the other hand.

[0105] The vehicle 100 according to an embodiment of the present invention will be described below.

[0106] The vehicle 100 according to an embodiment of the present invention includes a vehicle body 6, a hood 7, a memory, and a control program of the vehicle 100 stored in the memory and executable on a processor.

[0107] Wherein, the hood 7 is disposed on the upper side of the front end of the vehicle body 6. When the control program of the vehicle 100 is executed by the processor, the steps of the control method of the vehicle 100 described above are implemented.

[0108] Vehicle 100 according to an embodiment of the present invention, when the control program of vehicle 100 is executed by a processor, implements the steps of the control method of vehicle 100 described above, improving the accuracy of controlling the hood 7 and better protecting the object in front of the vehicle, especially when the object in front is a pedestrian. Additionally, when a collision risk is determined, raising the front end and / or the rear end of the hood 7 in advance can better avoid subsequent injuries to the pedestrian if they are hit.

[0109] The following describes a storage medium according to an embodiment of the present invention.

[0110] The storage medium according to an embodiment of the present invention stores a control program for vehicle 100, and when the control program for vehicle 100 is executed by a processor, it implements the steps of the control method of vehicle 100 described above.

[0111] The storage medium according to an embodiment of the present invention, when the stored control program for vehicle 100 is executed by a processor, implements the steps of the control method of vehicle 100 described above, improving the accuracy of controlling the hood 7 and better protecting the object in front of the vehicle, especially when the object in front is a pedestrian. Additionally, when a collision risk is determined, raising the front end and / or the rear end of the hood 7 in advance can better avoid subsequent injuries to the pedestrian if they are hit.

[0112] Other configurations and operations of vehicle 100 according to an embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0113] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0114] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for controlling a vehicle hood, characterized in that: include: When there is a risk of collision of the vehicle, raising the front end of the hood according to a first condition; The rear end of the hood is lifted according to the second condition.

2. The vehicle hood control method according to claim 1, characterized in that: The method further comprises: Obtain information about the target in front of the vehicle; The collision risk of the vehicle is determined according to the motion information of the target object and the motion information of the vehicle.

3. The vehicle hood control method according to claim 2, characterized in that: The method of determining the collision risk of the vehicle further comprises: Determining a predicted time TTC of a collision between the target object and the vehicle according to the motion information of the target object and the motion information of the vehicle; When the predicted time TTC is less than or equal to a collision threshold, the vehicle is at risk of collision.

4. The vehicle hood control method according to claim 2, characterized in that: The first condition is that the height of the target object is not higher than a preset height, and the second condition is that the height of the target object is higher than the preset height.

5. The vehicle hood control method according to claim 4, characterized in that: When the target object is a pedestrian, the first condition is a child, and the second condition is an adult.

6. The method for controlling a vehicle hood according to claim 4, characterized in that: The preset height is adjusted according to the height of the vehicle model.

7. The vehicle hood control method according to claim 4, characterized in that: When the target object satisfies the second condition, the control method further includes: Get the speed of the vehicle; When the speed of the vehicle is less than or equal to a preset speed, the rear end of the hood is lifted to a first height; When the speed of the vehicle is greater than the preset speed, the rear end of the hood is lifted to a second height, and the second height is greater than the first height.

8. The vehicle hood control method according to claim 7, characterized in that: The rear end of the hood is raised to a second height comprising: The rear end of the hood is firstly lifted to a first height and then lifted to a second height.

9. The vehicle hood control method according to claim 4, characterized in that: When the target object satisfies the first condition, the control method further includes: Get the speed of the vehicle; When the speed of the vehicle is less than or equal to a preset speed, the front end of the hood is raised to a third height; When the speed of the vehicle is greater than the preset speed, the front end of the hood is lifted to a fourth height, and the fourth height is greater than the third height.

10. The vehicle hood control method according to claim 9, characterized in that: The front end of the hood is raised to a fourth height comprising: The front end of the hood is firstly lifted to the third height and then lifted to the fourth height.

11. The method for controlling a vehicle hood according to any one of claims 7 to 10, characterized in that: The preset speed is 35km / h-45km / h.

12. The method for controlling a vehicle hood according to claim 5, characterized in that: When the target object satisfies the second condition, the control method further includes: Determine that a collision has occurred; Make sure the pedestrian's head does not land on the hood; The height of the vehicle is adjusted by the active suspension so that the pedestrian's head lands on the hood and / or the airbag at the rear end of the hood is opened.

13. The vehicle hood control method according to claim 12, characterized in that: The step of adjusting the height of the vehicle by active suspension so that the pedestrian's head lands on the hood and / or the airbag at the rear end of the hood opens includes: When the height of the vehicle is adjusted so that the pedestrian's head lands on the hood, the height of the vehicle is adjusted by the active suspension; When the pedestrian's head cannot land on the hood by adjusting the height of the vehicle, the airbag at the rear end of the hood is deployed.

14. The vehicle hood control method according to claim 12, characterized in that: When the airbag is deployed, the airbag covers the windshield crossbeam and the A-pillar.

15. The method for controlling a vehicle hood according to claim 14, characterized in that: When the airbag is deployed, the airbag has a hollow portion opposite to the main driving area.

16. The method for controlling a vehicle hood according to any one of claims 1 to 10 and 12 to 15, characterized in that: Also includes: The passive recognition module of the vehicle determines whether a collision occurs; When the vehicle does not collide, the hood performs reset.

17. The method for controlling a vehicle hood according to claim 16, characterized in that: The hood reset completion time is 3s-5s after the hood is lifted.

18. The method for controlling a vehicle hood according to claim 16, characterized in that: If it is determined that no collision has occurred after a preset time after the hood is raised, the hood is immediately reset.

19. The vehicle hood control method according to claim 18, characterized in that: The preset time is 2.5s-3.5s.

20. A vehicle control system, characterized in that: include: A judgment and decision-making module, wherein the judgment and decision-making module is used to judge whether there is a collision risk; An active hood actuation module is configured to lift a front end of the hood according to a first condition and a rear end of the hood according to a second condition when there is a risk of collision.

21. The vehicle control system according to claim 20, characterized in that: Also includes: The active recognition module is used to obtain target object information in front of the vehicle, and the judgment and decision module is used to determine whether there is a collision risk based on the information obtained by the active recognition module.

22. The vehicle control system according to claim 20, characterized in that: Also includes: A passive recognition module is provided at the front end of the vehicle and is used to determine whether a collision occurs.

23. The vehicle control system according to claim 22, characterized in that: The active hood execution module is further configured to reset the hood when the passive recognition module determines that no collision occurs.

24. The vehicle control system according to claim 22, characterized in that: The active hood execution module is also used to open the rear end airbag of the hood when the passive recognition module determines that a collision occurs and the pedestrian's head does not land on the hood.

25. The vehicle control system according to claim 22, characterized in that: Also includes: An active suspension adjustment module, wherein the active suspension adjustment module is used to lift the rear end of the hood when the active hood execution module lifts the height of the vehicle according to the information obtained by the active recognition module when the passive recognition module determines that a collision has occurred and the target object is a pedestrian and the pedestrian's head does not land on the hood.

26. A vehicle, characterized in that: include: A vehicle body, a hood, a memory, a processor, and a vehicle control program stored in the memory and executable on the processor, wherein: The hood is arranged on the upper side of the front end of the vehicle body; When the vehicle control program is executed by the processor, the steps of the vehicle hood control method according to any one of claims 1 to 19 are implemented.

27. A storage medium, characterized in that: The storage medium stores a vehicle control program, and when the vehicle control program is executed by a processor, the steps of the vehicle hood control method according to any one of claims 1 to 19 are implemented.

Images