CN112124237A - Automobile anti-collision beam device and control method thereof - Google Patents
Automobile anti-collision beam device and control method thereof Download PDFInfo
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- CN112124237A CN112124237A CN202011043501.XA CN202011043501A CN112124237A CN 112124237 A CN112124237 A CN 112124237A CN 202011043501 A CN202011043501 A CN 202011043501A CN 112124237 A CN112124237 A CN 112124237A
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- automobile
- energy absorption
- driving
- absorption box
- longitudinal beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/24—Arrangements for mounting bumpers on vehicles
- B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
- B60R19/34—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means destroyed upon impact, e.g. one-shot type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
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Abstract
The disclosure provides an automobile anti-collision beam device and a control method thereof, and belongs to the field of automobile bodies. The automobile anti-collision beam device comprises an energy absorption box, a longitudinal beam, a transverse beam, an elastic limiting mechanism, a driving piece and a signal acquisition and processing device; the first end of the energy absorption box is fixedly arranged on one side of the cross beam, and the second end of the energy absorption box is slidably inserted into the longitudinal beam. The elastic limiting mechanism is located on the energy absorption box and compressed between the inner side walls of the longitudinal beams. The side wall of the longitudinal beam is provided with a limiting hole, the limiting hole is located at one end, close to the cross beam, of the longitudinal beam, and the limiting hole is used for containing the elastic limiting mechanism. The driving piece is positioned in the longitudinal beam and connected with the second end of the energy absorption box; the signal acquisition and processing device is configured to control the driving piece to drive the energy absorption box to move along the length direction of the longitudinal beam according to the running parameters of the automobile, so that the elastic limiting mechanism is positioned in the limiting hole. The vehicle interior personnel protection device improves the protection effect on the vehicle interior personnel by changing the energy absorption space of the energy absorption box.
Description
Technical Field
The disclosure belongs to the field of automobile bodies, and particularly relates to an automobile anti-collision beam device and a control method thereof.
Background
The anti-collision beam device is used as an important component of an automobile body and generally comprises a cross beam, a longitudinal beam and an energy absorption box, wherein the energy absorption box is fixed between the cross beam and the longitudinal beam. When the automobile collides at low speed, the energy is weakened through the cross beam and the energy absorption box, so that the longitudinal beam is protected from being damaged, and the maintenance cost is reduced. When the automobile collides at a high speed, the energy can be effectively transmitted to the longitudinal beam, so that the longitudinal beam becomes a main stressed object, the driver is ensured not to be injured, meanwhile, the automobile door is ensured to be effectively opened, and the automobile door is convenient for people to escape.
However, when the above impact beam device is used in an automobile, the energy absorption box is directly fixed between the cross beam and the longitudinal beam, so the energy absorption box cannot move, that is, the energy absorption space cannot be changed.
Disclosure of Invention
The embodiment of the disclosure provides an automobile anti-collision beam device and a control method thereof, which can change the energy absorption space of an energy absorption box and improve the protection effect on people in an automobile. The technical scheme is as follows:
the embodiment of the disclosure provides an automobile anti-collision beam device, which comprises an energy absorption box, a longitudinal beam, a transverse beam, an elastic limiting mechanism, a driving piece and a signal acquisition and processing device, wherein the elastic limiting mechanism is arranged on the longitudinal beam;
the first end of the energy absorption box is fixedly arranged on one side of the cross beam, and the second end of the energy absorption box is slidably inserted into the longitudinal beam;
the elastic limiting mechanism is positioned on the energy absorption box and compressed between the inner side walls of the longitudinal beams;
a limiting hole is formed in the side wall of the longitudinal beam and is located at one end, close to the cross beam, of the longitudinal beam, and the limiting hole is used for accommodating the elastic limiting mechanism;
the driving piece is positioned in the longitudinal beam and connected with the second end of the energy absorption box;
the signal acquisition and processing device is configured to control the driving piece to drive the energy absorption box to move along the length direction of the longitudinal beam according to the running parameters of the automobile, so that the elastic limiting mechanism is located in the limiting hole.
In another implementation manner of the present disclosure, the energy absorption box has a mounting hole, the mounting hole is perpendicular to a moving direction of the energy absorption box, and the elastic limiting mechanism is inserted into the mounting hole.
In another implementation manner of the present disclosure, the elastic limiting mechanism includes a spring and two top shafts, the spring is clamped between the two top shafts, and the two top shafts are coaxially inserted into the mounting hole in an axially movable manner.
In yet another implementation of the present disclosure, the driving member includes a blocking member and a resilient member;
the barrier is movably positioned in the longitudinal beam, the moving direction of the barrier is perpendicular to the moving direction of the energy absorption box, and the barrier is positioned at the second end of the energy absorption box;
the resilient member is compressed between the inner wall of the stringer and the stop member.
In yet another implementation of the present disclosure, the stringer has a base therein, and the resilient member is compressed between the base and the stop member.
In another implementation manner of the present disclosure, the longitudinal beam has an electric control component therein, the electric control component includes a driving gear and a driving motor, the driving gear is coaxially connected to an output shaft of the driving motor, the blocking component has a rack thereon, and the driving gear is engaged with the rack.
In another implementation manner of the present disclosure, the signal acquisition and processing device includes a sensor, a camera mechanism, and a vehicle control unit, where the sensor and the camera mechanism are respectively in communication connection with the vehicle control unit, and the sensor and the camera mechanism are used to acquire the driving parameters.
In still another implementation manner of the present disclosure, a control method of an automobile impact beam apparatus, the control method being applied to the automobile impact beam apparatus according to any one of claims, characterized in that the control method includes:
acquiring the driving parameters in real time, wherein the driving parameters comprise driving speed and the distance between the automobile and the obstacle;
judging whether the automobile has collision risk or not based on the driving parameters;
if the automobile has collision risk, controlling the driving piece to drive the energy absorption box to move along the length direction of the longitudinal beam so as to enable the elastic limiting mechanism to be located in the limiting hole; and if the automobile does not have the collision risk, controlling the driving piece not to act.
In another implementation manner of the present disclosure, the obtaining the driving parameters in real time, where the driving parameters include a driving speed and a distance between the vehicle and an obstacle, includes:
acquiring the running speed through a sensor of the signal acquisition and processing device, and acquiring the distance between the automobile and the obstacle through a camera mechanism of the signal acquisition and processing device;
and transmitting the driving parameters including the driving speed and the distance between the automobile and the obstacle to a vehicle control unit in the signal acquisition and processing device.
In another implementation manner of the present disclosure, the determining whether the vehicle has a collision risk based on the driving parameter includes:
according to the running parameters, the vehicle control unit calculates the predicted braking distance of the vehicle in real time;
if the distance between the automobile and the obstacle is not larger than the predicted braking distance, determining that the automobile has a collision risk;
and if the distance between the automobile and the obstacle is larger than the predicted braking distance, determining that the automobile does not have the collision risk.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
when the automobile anti-collision beam device provided by the embodiment of the disclosure is used in an automobile, because the automobile anti-collision beam device comprises the cross beam, the longitudinal beam and the energy absorption box arranged between the cross beam and the longitudinal beam, when the automobile collides, collision energy can be directly transmitted to the cross beam, and then the collision energy is further absorbed through the energy absorption box. And the rest collision energy is further transmitted to the longitudinal beam, so that the collision energy is dispersed, and the injury to people in the vehicle is reduced.
Moreover, the automobile anti-collision beam device further comprises a driving piece and a signal acquisition processing device, so that the driving piece can be controlled through the signal acquisition processing device, the energy absorption box is driven to move along the length direction of the longitudinal beam through the driving piece until the elastic limiting mechanism is located in the limiting hole, and the energy absorption box is positioned on the longitudinal beam. That is to say, through the drive of driving piece to the energy-absorbing box, can make the energy-absorbing box drive the crossbeam and move certain range to this increases the energy-absorbing space, makes preparation in advance for absorbing more collision energy, and then alleviates the damage of car when the collision.
Because the energy absorption space between the cross beam and the longitudinal beam can be increased through the movement of the energy absorption box, the automobile anti-collision beam device can realize the change of larger energy absorption space through the limited length of the energy absorption box. That is to say, the automobile anti-collision beam device realizes that a larger energy absorption space is formed between the cross beam and the longitudinal beam through the structure of the existing small energy absorption box.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural view of an automotive impact beam apparatus provided in accordance with an embodiment of the present disclosure;
FIG. 2 is a schematic view of an assembly structure of an energy absorption box and an elastic limiting mechanism provided by the embodiment of the disclosure;
FIG. 3 is a schematic view of the drive member;
fig. 4 is a flowchart of a control method of an automobile impact beam device according to an embodiment of the disclosure.
The symbols in the drawings represent the following meanings:
1. an energy absorption box; 11. mounting holes;
2. a stringer; 21. a limiting hole; 22. a base;
3. a cross beam;
4. an elastic limiting mechanism; 41. a top shaft; 42. a spring;
5. a drive member; 51. a blocking member; 511. a rack; 52. an elastic member; 53. an electrical control; 531. a drive gear; 532. a drive motor;
6. a signal acquisition processing device; 61. a sensor; 62. a camera mechanism; 63. and (5) a vehicle control unit.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The embodiment of the disclosure provides an automobile anti-collision beam device, as shown in fig. 1, the automobile anti-collision beam device comprises an energy absorption box 1, a longitudinal beam 2 and a cross beam 3, and the automobile anti-collision beam device further comprises an elastic limiting mechanism 4, a driving piece 5 and a signal acquisition and processing device 6.
The first end of the energy absorption box 1 is fixedly arranged on one side of the cross beam 3, and the second end of the energy absorption box 1 is slidably inserted into the longitudinal beam 2.
The elastic limiting mechanism 4 is positioned on the energy absorption box 1, and the elastic limiting mechanism 4 is compressed between the inner side walls of the longitudinal beams 2.
The side wall of the longitudinal beam 2 is provided with a limiting hole 21, the limiting hole 21 is located at one end of the longitudinal beam 2 close to the cross beam 3, and the limiting hole 21 is used for accommodating the elastic limiting mechanism 4.
An actuating element 5 is located in the longitudinal beam 2, the actuating element 5 being connected to the second end of the crash box 1.
The signal acquisition and processing device 6 is configured to control the driving piece 5 to drive the energy absorption box 1 to move along the length direction of the longitudinal beam 2 according to the running parameters of the automobile, so that the elastic limiting mechanism 4 is positioned in the limiting hole 21.
When the automobile anti-collision beam device provided by the embodiment of the disclosure is used in an automobile, because the automobile anti-collision beam device comprises the cross beam 3, the longitudinal beam 2 and the energy absorption box 1 arranged between the cross beam 3 and the longitudinal beam 2, when the automobile is collided, collision energy can be directly transmitted to the cross beam 3, and then the collision energy is further absorbed through the energy absorption box 1. And then the rest collision energy is further transmitted to the longitudinal beam 2, so that the collision energy is dispersed, and the injury to people in the vehicle is reduced.
Moreover, since the automobile anti-collision beam device further comprises the driving piece 5 and the signal acquisition and processing device 6, the driving piece 5 can be controlled by the signal acquisition and processing device 6, so that the energy absorption box 1 is driven to move along the length direction of the longitudinal beam 2 through the driving piece 5 until the elastic limiting mechanism 4 is positioned in the limiting hole 21, and the energy absorption box 1 is positioned on the longitudinal beam 2. That is to say, the energy absorption box 1 is driven by the driving piece 5, so that the energy absorption box 1 drives the beam 3 to move within a certain range, the energy absorption space is increased, preparation is made in advance for absorbing more collision energy, and further the damage of the automobile in collision is reduced.
Since the energy absorption space between the cross beam 3 and the longitudinal beam 2 can be increased by the movement of the energy absorption box 1, the automobile anti-collision beam device can realize the change of a larger energy absorption space by the limited length of the energy absorption box 1. That is, the automobile anti-collision beam device realizes that a larger energy absorption space is formed between the cross beam 3 and the longitudinal beam 2 through the structure of the existing small energy absorption box 1.
Alternatively, the cross beam 3 may be a circular arc-shaped structural member, and the cross beam 3 is convex outward in a direction away from the longitudinal beam 2 to form a circular arc.
The beam 3 is in the shape above, and can be well matched with an automobile body, so that the automobile is more attractive. On the other hand, other structures such as a buffer material and an outer plate can be conveniently arranged on the cross beam 3, so that collision energy can be better buffered when the automobile collides, and the damage to the automobile is reduced.
The cross beam 3 may be manufactured, for example, by cold-rolled sheet stamping.
In the above embodiment, the beam 3 is manufactured by cold-rolling a thin plate, and the manufacturing efficiency can be made higher.
Illustratively, the number of the longitudinal beams 2 can be two, two longitudinal beams 2 are arranged at two ends of the cross beam 3 in parallel and spaced mode, and the longitudinal beams 2 are positioned on one side of the arc concave of the cross beam 3. Correspondingly, the two energy absorption boxes 1 and the two driving pieces 5 can be respectively arranged corresponding to the longitudinal beams 2 one by one.
Illustratively, the longitudinal beam 2 can be a hollow structural member, and the energy absorption box 1, the elastic limiting mechanism 4 and the driving piece 5 are all arranged in the inner hollow of the longitudinal beam 2.
In the above implementation, the longitudinal beam 2 is designed as a hollow structural member, so that on one hand, an installation space can be provided for the energy absorption box 1, the elastic limiting mechanism 4, the driving member 5 and the like, and on the other hand, the weight of the longitudinal beam 2 can be reduced, so that the whole automobile is light.
Fig. 2 is a schematic view of an assembly structure of an energy absorption box and an elastic limiting mechanism according to an embodiment of the present disclosure, and the energy absorption box and the elastic limiting mechanism are introduced below with reference to fig. 2.
In the embodiment, the crash box 1 is provided with a mounting hole 11, the mounting hole 11 is perpendicular to the moving direction of the crash box 1, and the elastic limiting mechanism 4 is inserted into the mounting hole 11.
In the above implementation, the mounting hole 11 is used to provide a mounting space for the elastic limiting mechanism 4, so that the elastic limiting mechanism 4 can be accommodated in the mounting hole 11. Moreover, the mounting hole 11 is perpendicular to the moving direction of the energy absorption box 1, so that the mounting hole 11 can also play a role in guiding the elastic limiting mechanism 4, and the elastic limiting mechanism 4 can only move along the moving direction perpendicular to the energy absorption box 1 without deviation, so that the elastic limiting mechanism 4 can be smoothly inserted into the corresponding limiting hole 21, namely the elastic limiting mechanism 4 is mounted with the limiting hole 21, and the energy absorption box 1 can be positioned on the longitudinal beam 2.
Optionally, the elastic limiting mechanism 4 comprises a spring 42 and two top shafts 41, the spring 42 is clamped between the two top shafts 41, and the two top shafts 41 are coaxially inserted into the mounting hole 11 in an axially movable manner.
In the above implementation manner, the elastic limiting mechanism 4 is provided with the two top shafts 41 and the spring 42, so that the elastic limiting mechanism 4 can be conveniently extended and contracted. When the elastic limiting mechanism 4 moves to the limiting hole 21 along with the crash box 1, under the action of the spring 42, the two top shafts 41 respectively move back to the spring 42 until extending out of the limiting hole 21. Because the two ends of the spring 42 are respectively connected to the top shafts 41, and the length of the spring 42 is limited, the two top shafts 41 do not fall out of the mounting hole 11, but are clamped between the mounting hole 11 and the limiting hole 21 under the thrust of the driving piece 5 so as to be subjected to the shearing force exerted by the longitudinal beam 2 and the energy absorption box 1. At this time, the crash box 1 and the side member 2 are held relatively fixed in the axial direction by the restraint of the top shaft 41. That is, the elastic stopper mechanism 4 can be easily fixed in the stopper hole 21 by the engagement between the two top shafts 41 and the spring 42 with the stopper hole 21.
In other embodiments, in order to simplify the structure of the elastic limiting mechanism 4 and reduce the manufacturing cost, the elastic limiting mechanism 4 may also include only the spring 42 and the top shaft 41, in which case, the mounting hole 11 may be a blind hole with one end closed and one end open, one end of the spring 42 abuts against the inner wall of the mounting hole 11, the other end of the spring 42 abuts against the first end of the top shaft 41, and the second end of the top shaft 41 is coaxially inserted into the mounting hole 11 in an axially movable manner.
Fig. 3 is a schematic view of the driving member, and the driving member will be described with reference to fig. 3.
In this embodiment, the driving member 5 comprises a blocking member 51 and a resilient member 52, the blocking member 51 is movably disposed in the side member 2, the moving direction of the blocking member 51 is perpendicular to the moving direction of the crash box 1, the blocking member is disposed at the second end of the crash box 1, and the resilient member 52 is compressed between the inner wall of the side member 2 and the blocking member 51.
In the above embodiment, the driving element 5 is provided as the elastic element 52 and the blocking element 51, and the blocking element 51 can make the elastic element 52 in a compressed state in an initial state, i.e. store a certain amount of energy, and prepare in advance for driving the crash box 1 to move later.
The blocking member 51 is movably mounted on the longitudinal beam 2, and the blocking member 51 can flexibly change the blocking state of the elastic member 52. That is, the stopper 51 can stop the elastic member 52 from extending, and the stopper 51 can be moved to release the elastic member 52 from being stopped. When the blocking piece 51 releases the blocking of the elastic piece 52, the elastic piece 52 can extend under the action of the elasticity of the elastic piece 52 and directly abut against the energy absorption box 1, so that the energy absorption box 1 is pushed to move on the longitudinal beam 2, more energy absorption spaces between the transverse beam 3 and the longitudinal beam 2 are increased due to the fact that the energy absorption box 1 extends out of the longitudinal beam 2.
That is, with the above arrangement, it is possible to flexibly operate whether the driving member 5 pushes the crash box 1 to move, thereby realizing increase of the crash space.
Illustratively, the blocking member 51 is a retractable plate-shaped structural member, the blocking member 51 is perpendicular to the side member 2, one plate surface of the blocking member 51 abuts against the elastic member 52, and the other plate surface of the blocking member 51 is arranged next to the crash box 1.
In the above implementation, the blocking member 51 is configured as a telescopic plate-shaped structural member, which can increase the blocking area for the elastic member 52, thereby more stably blocking the elastic member 52 and ensuring that the initial state of the elastic member 52 is in a compressed state.
It can be understood that the blocking member 51 may be of other structures, for example, a rotating plate rotatably mounted on the longitudinal beam 2, as long as the blocking of the elastic member 52 by the blocking member 51 can be satisfied, and the blocking of the elastic member 52 can also be automatically released, and the pushing of the energy absorption box 1 by the elastic member 52 is not affected, which is not limited by the embodiment of the present disclosure.
In order to realize the movement of the blocking member 51, an electric control member 53 may be provided in the longitudinal beam 2, the electric control member 53 includes a driving gear 531 and a driving motor 532, the driving gear 531 is coaxially connected to an output shaft of the driving motor 532, the blocking member 51 has a rack 511, and the driving gear 531 is engaged with the rack 511.
Optionally, the stringer 2 has a base 22 therein, and the resilient member 52 is compressed between the base 22 and the blocking member 51.
In the above-described implementation, the base 22 is arranged to provide a mounting base for the elastic member 52, on the one hand, and to enable the elastic member 52 to be compressed, on the other hand.
Optionally, the signal acquiring and processing device 6 includes a sensor 61, a camera 62, and a vehicle control unit 63, where the sensor 61 and the camera 62 are respectively in communication connection with the vehicle control unit 63, and the sensor 61 and the camera 62 are used to acquire the driving parameters.
In the above implementation, the sensor 61 is a vehicle speed sensor for acquiring the driving speed of the vehicle, and the camera 62 is a camera for acquiring the distance between the vehicle and the obstacle and outputting the distance to the vehicle control unit 63, so as to control the driving motor 532 in the electric control unit 53 to operate, so that the driving gear 531 is engaged with the rack 511 to drive the blocking member 51 to move.
Then, the vehicle control unit 63 analyzes and processes all the information to determine whether the vehicle has a collision risk.
If the automobile is judged to have the collision risk, the vehicle control unit 63 controls the blocking member 51 to move to release the pressing of the elastic member 52. At this time, the elastic member 52 directly acts on the crash box 1, and the crash box 1 is driven by the elastic member 52 to move, thereby finally expanding the energy absorbing space between the cross beam 3 and the side beam 2 and preparing for reducing the damage.
The working mode of the automobile anti-collision beam device provided by the embodiment of the disclosure is briefly introduced as follows:
first, after the automobile impact beam device is installed on an automobile, when the automobile runs normally, the positions among the cross beam 3, the longitudinal beam 2 and the crash box 1 are in the original positions, that is, the elastic member 52 is compressed between the blocking member 51 and the base 22 of the longitudinal beam 2.
Then, during the driving process of the vehicle, the camera 62 and the sensor 61 in the signal acquisition and processing device 6 can acquire the driving parameters of the vehicle during the driving process, such as the driving speed of the vehicle, the distance between the vehicle and the obstacle, and the like, in real time, and the vehicle controller 63 analyzes and judges the received information to determine whether the vehicle has a collision risk. And, whether the stopper 51 in the driver 5 moves or not is controlled according to the different determination result.
If the vehicle control unit 63 determines that the vehicle has a collision risk, the vehicle control unit 63 controls the blocking member 51 of the driving member 5 to move so as to release the pressing of the elastic member 52, and then the elastic member 52 can directly act on the crash box 1, and at this time, the crash box 1 moves under the driving of the elastic member 52.
When the energy absorption box 1 moves for a certain distance, the energy absorption box 1 is limited and cannot move further when the elastic limiting mechanism 4 is positioned in the corresponding limiting hole 21 because the elastic limiting mechanism 4 is arranged on the energy absorption box 1. That is to say, the energy absorption box 1 is driven by the driving piece 5, so that the energy absorption box 1 drives the beam 3 to move within a certain range, the energy absorption space is increased, more collision energy is absorbed, and preparation is made in advance for collision.
Then, when the automobile collides, collision energy can be directly transmitted into the cross beam 3, then the energy absorption box 1 further absorbs the collision energy, and the rest collision energy is transmitted onto the longitudinal beam 2, so that the collision force is dispersed, and the injury to people in the automobile is reduced.
The embodiment of the present disclosure further provides a control method for an automobile anti-collision beam device, where the control method is applicable to the automobile anti-collision beam device, and as shown in fig. 4, the control method includes:
s401: and acquiring running parameters in real time, wherein the running parameters comprise running speed and the distance between the automobile and the obstacle.
Exemplarily, step S401 can be implemented by:
first, the sensor 61 of the signal acquisition and processing device 6 acquires the traveling speed, and the imaging mechanism 62 of the signal acquisition and processing device 6 acquires the distance between the vehicle and the obstacle.
In the above-described implementation, a plurality of sensors 61 and a plurality of cameras 62 can be mounted on the outer surface of the automobile, respectively, so that the driving parameters of the automobile can be acquired by the sensors 61 and the cameras 62.
For example, the sensor 61 may be a speed sensor for acquiring the driving speed, the acquired driving speed includes not only the driving speed of the automobile itself but also the moving speed of other obstacles within the target range, and finally the relative driving speed of the automobile is determined by the driving speed of the automobile itself and the moving speed of the obstacles, that is, the sensor 61 can acquire the relative driving speed of the automobile in real time.
The camera 62 is used to obtain the distance between the vehicle and the obstacle, including the distance between the vehicle and the obstacle in front of the vehicle, behind the vehicle, left and right of the vehicle.
Then, the driving parameters including the driving speed and the distance between the vehicle and the obstacle are transmitted to the vehicle control unit 63 in the signal acquisition and processing device 6.
In the above implementation, the sensors 61 and the camera mechanism 62 transmit the acquired related driving parameters to the vehicle control unit 63 one by one, and the vehicle control unit 63 performs analysis processing on the acquired related driving parameters.
S402: and judging whether the automobile has collision risk or not based on the driving parameters. If the automobile has a collision risk, step S403 is executed. If the automobile does not have the collision risk, step S404 is executed.
Exemplarily, step S402 is implemented by:
first, the vehicle control unit 63 calculates a predicted braking distance of the vehicle in real time according to the driving parameters.
In the above implementation manner, the vehicle control unit 63 calculates the braking distances of the vehicles in a one-to-one correspondence manner according to the received driving parameters, so as to judge the vehicles in real time.
The estimated braking distance is an estimated minimum distance required by the automobile to stop, and is calculated according to the own running speed of the automobile and the relative running speed of the automobile relative to the obstacle.
Then, if the distance between the automobile and the obstacle is not larger than the expected braking distance, the automobile is determined to have the collision risk. And if the distance between the automobile and the obstacle is larger than the expected braking distance, determining that the automobile does not have the collision risk.
In the implementation manner, the distance between the automobile and the obstacle and the braking distance are judged, and when the distance between the automobile and the obstacle is not greater than the expected braking distance, it is indicated that the automobile collides with the obstacle at the moment, and the vehicle control unit 63 immediately reminds the driver of braking the automobile. Similarly, the distance between the automobile and the obstacle and the braking distance are judged, and when the distance between the automobile and the obstacle is larger than the expected braking distance, the automobile is in a safe state in the driving process, namely, the automobile does not collide with the obstacle.
S403: the control driving piece 5 drives the energy absorption box 1 to move along the length direction of the longitudinal beam 2, so that the elastic limiting mechanism 4 is positioned in the limiting hole 21.
Illustratively, the driving piece 5 is controlled by the vehicle control unit 63 to drive the crash box 1 to move along the length direction of the longitudinal beam 2.
In the implementation manner, after the automobile has a collision risk, the vehicle control unit 63 controls the electric control part 53 in the driving part 5 to act to drive the blocking part 51 to move, so that the blocking part 51 releases the pressing of the elastic part 52 by the blocking part 51 through the movement. Therefore, the elastic piece 52 can directly support the energy absorption box 1 so as to drive the energy absorption box 1 to move on the longitudinal beam 2, and finally, the energy absorption space between the cross beam 3 and the longitudinal beam 2 is enlarged, so that preparation is made in advance for the collision of the automobile, and the damage of the collision to the automobile is reduced.
S404: the driving part 5 is controlled not to act, and the vehicle keeps running normally.
In the above implementation manner, after the automobile has a collision risk, the vehicle control unit 63 does not control the electric control part 53 in the driving part 5 to act, that is, the electric control part 53 keeps the original state, and accordingly, the blocking part 51 does not move, and the blocking part 51 keeps pressing against the elastic part 52.
The above description is meant to be illustrative of the principles of the present disclosure and not to be taken in a limiting sense, and any modifications, equivalents, improvements and the like that are within the spirit and scope of the present disclosure are intended to be included therein.
Claims (10)
1. The automobile anti-collision beam device comprises an energy absorption box (1), a longitudinal beam (2) and a transverse beam (3), and is characterized by further comprising an elastic limiting mechanism (4), a driving piece (5) and a signal acquisition and processing device (6);
the first end of the energy absorption box (1) is fixedly arranged on one side of the cross beam (3), and the second end of the energy absorption box (1) is slidably inserted into the longitudinal beam (2);
the elastic limiting mechanism (4) is positioned on the energy absorption box (1), and the elastic limiting mechanism (4) is compressed between the inner side walls of the longitudinal beams (2);
a limiting hole (21) is formed in the side wall of the longitudinal beam (2), the limiting hole (21) is located at one end, close to the cross beam (3), of the longitudinal beam (2), and the limiting hole (21) is used for accommodating the elastic limiting mechanism (4);
the driving piece (5) is positioned in the longitudinal beam (2), and the driving piece (5) is connected with the second end of the energy absorption box (1);
the signal acquisition and processing device (6) is configured to control the driving piece (5) to drive the energy absorption box (1) to move along the length direction of the longitudinal beam (2) according to the running parameters of the automobile, so that the elastic limiting mechanism (4) is located in the limiting hole (21).
2. The automobile impact beam device according to claim 1, characterized in that the energy absorption box (1) is provided with a mounting hole (11), the mounting hole (11) is perpendicular to the moving direction of the energy absorption box (1), and the elastic limiting mechanism (4) is inserted into the mounting hole (11).
3. The automobile impact beam device according to claim 2, wherein the elastic limiting mechanism (4) comprises a spring (42) and two top shafts (41), the spring (42) is clamped between the two top shafts (41), and the two top shafts (41) are coaxially inserted into the mounting hole (11) in an axially movable manner.
4. The automotive impact beam arrangement according to claim 1, characterized in that said driving member (5) comprises a blocking member (51) and a resilient member (52);
the blocking piece (51) is movably arranged in the longitudinal beam (2), the moving direction of the blocking piece (51) is perpendicular to the moving direction of the energy absorption box (1), and the blocking piece (51) is arranged at the second end of the energy absorption box (1);
the elastic member (52) is compressed between the inner wall of the longitudinal beam (2) and the blocking member (51).
5. The crashworthy beam assembly according to claim 4, wherein said longitudinal beam (2) has a base (22) inside it, said elastic element (52) being compressed between said base (22) and said blocking element (51).
6. The automobile impact beam device according to claim 4, characterized in that an electric control (53) is arranged in the longitudinal beam (2), the electric control (53) comprises a driving gear (531) and a driving motor (532), the driving gear (531) is coaxially connected to an output shaft of the driving motor (532), the blocking member (51) is provided with a rack (511), and the driving gear (531) is meshed with the rack (511).
7. The automobile anti-collision beam device according to claim 1, characterized in that the signal acquisition and processing device (6) comprises a sensor (61), a camera mechanism (62) and a vehicle control unit (63), the sensor (61) and the camera mechanism (62) are respectively in communication connection with the vehicle control unit (63), and the sensor (61) and the camera mechanism (62) are used for acquiring the driving parameters.
8. A control method of an automobile impact beam apparatus, which is applied to the automobile impact beam apparatus according to any one of claims 1 to 6, characterized by comprising:
acquiring the driving parameters in real time, wherein the driving parameters comprise driving speed and the distance between the automobile and the obstacle;
judging whether the automobile has collision risk or not based on the driving parameters;
if the automobile has collision risk, controlling the driving piece (5) to drive the energy absorption box (1) to move along the length direction of the longitudinal beam (2) so as to enable the elastic limiting mechanism (4) to be located in the limiting hole (21); and if the automobile has no collision risk, controlling the driving piece (5) not to act.
9. The control method according to claim 8, wherein the acquiring of the driving parameters in real time, the driving parameters including a driving speed and a distance of the automobile from an obstacle, comprises:
acquiring the running speed through a sensor (61) of the signal acquisition and processing device (6), and acquiring the distance between the automobile and an obstacle through a camera mechanism (62) of the signal acquisition and processing device (6);
and transmitting the driving parameters including the driving speed and the distance between the automobile and the obstacle to a vehicle control unit (63) in the signal acquisition and processing device (6).
10. The control method according to claim 9, wherein the determining whether the automobile has a collision risk based on the driving parameter includes:
according to the driving parameters, the vehicle control unit (63) calculates the predicted braking distance of the vehicle in real time;
if the distance between the automobile and the obstacle is not larger than the predicted braking distance, determining that the automobile has a collision risk;
and if the distance between the automobile and the obstacle is larger than the predicted braking distance, determining that the automobile does not have the collision risk.
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| CN202011043501.XA CN112124237B (en) | 2020-09-28 | 2020-09-28 | Automobile anti-collision beam device and control method thereof |
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| CN202011043501.XA CN112124237B (en) | 2020-09-28 | 2020-09-28 | Automobile anti-collision beam device and control method thereof |
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| CN112124237B (en) | 2022-04-08 |
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