CN112277870A - Protection system, automobile and control method for vulnerable road users - Google Patents
Protection system, automobile and control method for vulnerable road users Download PDFInfo
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- CN112277870A CN112277870A CN201910677908.9A CN201910677908A CN112277870A CN 112277870 A CN112277870 A CN 112277870A CN 201910677908 A CN201910677908 A CN 201910677908A CN 112277870 A CN112277870 A CN 112277870A
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- lifting
- jacking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
Abstract
The invention relates to the technical field of protection of users on weak roads, and discloses a protection system for users on weak roads, which comprises a lifting device, a power supply device, a controller and a jacking device, wherein the lifting device is connected with an automobile hood, a magnetic part is arranged on the lifting device, the controller controls the power supply device to supply power to the jacking device, the jacking device is arranged below the lifting device and is used for jacking the lifting device so as to lift the rear end of the automobile hood, the jacking device generates electromagnetic force after being electrified, the electromagnetic force is changed according to a predefined rule, and the direction of a magnetic field of the magnetic part is opposite to the direction of a magnetic field of the jacking device after being electrified. The invention solves the problems that the automobile hood in the prior art can not rebound and fall after being jacked, the pedestrian protection effect is influenced, and the jacking devices in the prior art are disposable parts, can not be used repeatedly, and have high replacement and maintenance cost.
Description
Technical Field
The invention relates to the technical field of protection of users on weak roads, in particular to a protection system, an automobile and a control method for users on weak roads.
Background
According to statistics, in recent years, more than 2 million people in China die of traffic accidents every year on vulnerable roads account for about 30% of the death rate of the total traffic accidents. In road traffic accidents counted by the European Union, the number of deaths of users on the vulnerable road is 9 times that of passengers in the vehicle.
In the prior art, when the gap between an engine hood and an internal rigid structure of an engine cabin does not meet the design requirement for protecting the head of a user on a weak road, a bounce type engine hood technology is generally adopted for protecting the head of the user on the weak road in a collision, when a vehicle collides, the type of a collided target is judged by a sensor arranged on a front bumper of the vehicle, and when the judgment result is that the user on the weak road is the user on the weak road, the rear end of the engine hood is lifted, the gap between the engine hood and the internal rigid structure of the engine cabin is increased, certain collision impact energy is absorbed, and head injury of the user on the weak road is reduced. However, the technology can only judge the ignition action of calculation and the jacking device after the collision occurs, the reserved calculation time and the action time are very short, the requirement on the action speed of the actuating mechanism is high, and a plurality of different sensors are required to detect collision information, in addition, in order to meet the requirement on lifting the engine hood for a very short time, the ignition trigger device similar to an airbag can only be adopted as the jacking device in the prior art, the jacking device cannot be repeatedly used, the maintenance cost is high, and due to the fixed support after the jacking rod of the jacking device jacks up, the whole body of the engine hood can not fall and buffer, and the buffering and protection effects on weak road users are influenced.
In view of the above technical problems, it is necessary to provide a protection system for vulnerable road users to protect the vulnerable road users.
Disclosure of Invention
The invention aims to solve the technical problems that in the prior art, an automobile hood cannot rebound and fall after being jacked, the pedestrian protection effect is influenced, and in the prior art, a jacking device is a disposable part, cannot be reused and has high replacement and maintenance cost.
In order to solve the technical problem, the invention discloses a protection system for a user on a weak road, which comprises a lifting device, a power supply device, a controller and a jacking device, wherein the lifting device is connected with a hood of an automobile, a magnetic part is arranged on the lifting device,
the controller controls the power supply device to supply power to the jacking device,
the jacking device is arranged below the lifting device and used for jacking the lifting device so as to lift the rear end of the automobile hood, the jacking device generates electromagnetic force after being electrified, the electromagnetic force is changed according to a predefined rule,
the magnetic field direction of the magnetic component is opposite to the magnetic field direction of the jacking device after the jacking device is electrified.
Further, the system also comprises a current processor which is electrically connected with the controller, and the controller controls the current processor to change the output current of the power supply device so that the output current changes according to a predefined rule.
Further, the system includes a pre-crash sensor for detecting a target in a roadway in front of the vehicle, the pre-crash sensor being electrically connected to the controller.
Further, the controller comprises a judging unit, a first control unit and a second control unit, the judging unit is electrically connected with the pre-collision sensor, the first control unit is electrically connected with the power supply device, and the second control unit is electrically connected with the current processor.
Further, the lifting device comprises a lifting arm, a connecting arm and a mounting seat, the lifting arm is connected with the automobile hood, one end of the connecting arm is connected with the lifting arm in a rotating mode, the other end of the connecting arm is connected with the mounting seat in a rotating mode, and the mounting seat is arranged on the automobile body.
Furthermore, the lifting arm is provided with a fixing piece for fixedly connecting the lifting arm with the connecting arm, and the fixing piece is arranged at one end of the lifting arm, which is rotatably connected with the connecting arm.
Preferably, the magnetic member is disposed at the bottom of the lifting arm or embedded inside the lifting arm.
Further, the application also provides an automobile which is provided with the protection system for the vulnerable road users.
Further, the present application also provides a control method of a protection system for a vulnerable road user, the method including:
detecting a target object in front of a road, wherein the target object comprises a static object in the road in front and a weak road user;
judging whether the user on the weak road collides with the automobile;
if the weak road user is judged to collide with the automobile, the power supply device is controlled to supply power to the jacking device, so that the jacking device jacks the lifting device
Further, after the lifting device is lifted by the lifting device, the method further comprises:
controlling a power supply device to change an output current or controlling a current processor to change the output current of the power supply device so that the output current changes according to a predefined rule.
By adopting the technical scheme, the protection system, the automobile and the control method for the vulnerable road users have the following beneficial effects:
1) according to the lifting device, the magnetic component is arranged on the lifting arm, the lifting device generates a magnetic field in the direction opposite to that of the magnetic component after being electrified, the lifting device is lifted based on the electromagnetic induction principle, so that the rear end of the automobile hood is lifted, the lifting device can be repeatedly used, and the replacement and maintenance cost of the lifting device is reduced;
2) in the application, the output current of the power supply device is changed by controlling the current processor, so that the output current is changed according to a predefined rule, the electromagnetic force generated by the energized jacking device is changed according to the predefined rule, and when a weak road user collides with the hood, the whole hood can rotate downwards to a certain degree for buffering, so that the weak road user is protected better;
3) in this application, can control the coil number of turns to a certain extent for jacking device lightweight development saves occupation space, has avoided interference and restriction to surrounding parts such as fender simultaneously.
4) The method of the embodiment can lift the automobile hood before ensuring that a user on a weak road contacts with the automobile hood, does not need to additionally add a pressure pipe sensor like the prior art, does not need to judge the rigidity and the quality of a collided object, does not need to consider the problem of misjudgment, does not need to execute a large number of system calibration tests for setting, and effectively reduces the time cost and the hardware cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic configuration diagram of a protection system for a vulnerable road user according to embodiment 1;
FIG. 2 is an enlarged view at I in FIG. 1;
FIG. 3 is a schematic view showing the construction of a system for protecting a vulnerable road user according to embodiment 2;
FIG. 4 is an enlarged view at II in FIG. 3;
FIG. 5 is a flowchart of a control method of the protection system for vulnerable road users according to embodiment 4;
FIG. 6 is a flowchart of a control method of the protection system for vulnerable road users according to embodiment 5;
in the figure, 1-controller, 2-power supply device, 3-current processor, 4-car hood, 5-lifting device, 51-mounting seat, 52-connecting arm, 53-lifting arm, 531-connecting part, 532-lifting part, 54-magnetic part, 55-first rotating shaft, 56-second rotating shaft, 57-fixing part, 6-lifting device, 61-coil and 62-iron core.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Example 1:
for solving the unable whereabouts of kick-backing after the automobile bonnet that exists among the prior art is by the jacking, influence among pedestrian's the protection effect and the prior art jacking ware and be disposable part, unable used repeatedly, change and the high problem of cost of maintenance, this embodiment provides a weak road user's protection system, protection system is used for weak road user's protection, weak road user not only is limited to the pedestrian, and it still includes that the bicycle rides passerby, tricycle and rides passerby or animal etc..
Specifically, as shown in fig. 1 and fig. 2, the system comprises a lifting device 5, a power supply device 2, a controller 1 and a jacking device 6, wherein the lifting device 5 is connected with a hood 4 of the automobile, a magnetic component 54 is arranged on the lifting device 5,
the power supply device 2 is electrically connected with the jacking device 6, the controller 1 is electrically connected with the power supply device 2, the controller 1 controls the power supply device 2 to supply power to the jacking device 6,
the jacking device 6 is arranged below the lifting device 5 and used for jacking the lifting device 5 so as to lift the rear end of the automobile hood 4, the jacking device 6 generates electromagnetic force after being electrified, the electromagnetic force is changed according to a predefined rule,
the magnetic field direction of the magnetic component 54 is opposite to the magnetic field direction of the jacking device 6 after being electrified.
Further, the system further comprises a pre-crash sensor for detecting an object in the road in front of the vehicle, the pre-crash sensor being electrically connected to the controller 1. Preferably, the pre-collision sensor may include one or more millimeter wave radar (such as a long-distance millimeter wave radar), a camera (such as a monocular camera, etc.), an ultrasonic radar, a laser radar, etc., and the pre-collision sensing system may be a combination of any two or more of the foregoing, such as a long-distance millimeter wave radar and a monocular camera, where the maximum detection distance of the long-distance millimeter wave radar is up to 180 meters, the ranging accuracy is up to 0.175 meters, the speed measurement range is up to-80 to 80m/s, and the speed measurement accuracy is 0.05 m/s; the monocular camera can detect the distance between the two-wheeled vehicle and the pedestrian by 80 meters, and the combination of the two can detect the vulnerable road users in front of the vehicle, the distance and the speed of the users in front of the vehicle in advance and transmit signals to the controller 1.
Further, the controller 1 includes a determination unit, a first control unit and a second control unit, the determination unit is electrically connected to the pre-collision sensor, the first control unit is electrically connected to the power supply device 2, and the second control unit is electrically connected to the current processor 3.
Further, the lifting device 5 comprises a lifting arm 53, a connecting arm 52 and a mounting seat 51, the lifting arm 53 is connected with the automobile hood 4, one end of the connecting arm 52 is rotatably connected with the lifting arm 53, the other end of the connecting arm 52 is rotatably connected with the mounting seat 51, and the mounting seat 51 is arranged on the automobile body. Preferably, the connecting arm 52 is connected to the lifting arm 53 through a first rotating shaft 55, and the connecting arm 52 is connected to the mounting base 51 through a second rotating shaft 56.
The lifting arm 53 is provided with a fixing part 57 for fixedly connecting the lifting arm 53 with the connecting arm 52, and the fixing part 57 is arranged at one end of the lifting arm 53 rotatably connected with the connecting arm 52.
In a preferred embodiment, the lifting arm 53 includes a lifting portion 532 and a connecting portion 531, one end of the lifting portion 532 is connected to the connecting portion 531, the other end of the lifting portion 532 is suspended, and the other end of the connecting portion 531 is connected to the connecting arm 52. The fixing member 57 is disposed between the first rotating shaft 55 and a connection point of the lifting portion 532 and the connection portion 531, and preferably, the fixing member 57 is disposed away from the first rotating shaft 55. The fastener 57 is preferably a rivet.
In a preferred embodiment, the magnetic member 54 is preferably a magnet, the magnetic member 54 is disposed at the bottom of the lifting portion 532 of the lifting arm 53, and the magnetic member 54 is disposed near the suspended end of the lifting portion 532.
In a preferred embodiment, the controller 1 is embedded in an Electronic Control Unit (ECU) (electronic Control unit, also called "vehicle computer", "vehicle-mounted computer", etc.) of the vehicle, and a functional module of the ECU evaluates the threat of frontal collision between the vulnerable road user and the vehicle according to a signal transmitted by a pre-collision sensor, determines whether the collision between the vehicle and the vulnerable road user is about to occur, and controls the power supply device 2 to supply power to the jacking device 6 if the collision between the vehicle and the vulnerable road user is determined to occur, so that the power supply device 2 outputs current according to a predefined rule.
The power supply device 2 is a power supply of an automobile electronic device and supplies power to the jacking device 6 according to a control signal of the controller 1. The jacking device 6 is arranged below the magnetic component 54, the jacking device 6 is an electromagnetic induction device and comprises a coil 61 and an iron core 62, and the coil 61 is wound outside the iron core 62 and used for passing current. Preferably, after the jacking device 6 is powered on, a magnetic field opposite to the magnetic component 54 is generated, that is, a magnetic pole at one end of the jacking device 6 close to the magnetic component 54 is the same as a magnetic pole at one end of the magnetic component 54 close to the jacking device 6, and the two generate a repulsive force, so that the automobile hood 4 is lifted under the action of the repulsive force.
Further, the magnitude of the electromagnetic force generated by the jacking device 6 depends on the current magnitude passing through the coil 61, the number of turns of the coil, the coil material, the iron core material and other factors, and in practical setting, the magnitude of the electromagnetic force can be controlled by controlling the above factors, preferably, the magnitude of the electromagnetic force generated after the jacking device is electrified can be controlled by controlling the current magnitude passing through the coil 61, selecting the coil material or selecting the iron core material, so that the number of turns of the coil can be controlled to a certain degree, the jacking device 6 can be lightened, the occupied space is saved, and meanwhile, the interference or limitation on surrounding components such as a fender is avoided.
Further, after the controller 1 acquires a signal transmitted by a pre-collision sensor and evaluates that a weak road user is about to collide with the automobile, the controller 1 controls the power supply device 2 to output current according to a predefined rule through the first control unit. The predefined rule can be set according to actual requirements, and is not limited herein.
In one alternative, the predefined rule may be set as follows:
the controller 1 controls the power supply device 2 to supply power to the jacking device 6 with an initial power supply current value, so that after the jacking device 6 is powered on, the generated electromagnetic force can just make the fixing part 57 cut off under the action of the electromagnetic force, the connecting arm 52 is separated from the lifting arm 53, and under the action of magnetic field repulsion, the lifting arm 53 drives the rear end of the automobile hood 4 to rotate around the first rotating shaft 55 together, so that the rear end of the automobile hood 4 is lifted under the action of the magnetic field repulsion. Further, after the rear end of the hood 4 is lifted, the controller 1 controls the output current of the power supply device 2 to be reduced according to a predetermined rule, for example, the current is reduced by the current reduction I every first predetermined timen/5 wherein InFor the previous current value, n takes 1, 2, 3. For the predefined rule, for example, when n is 1, the initial current value output by the power supply device 2 is set to be 10A, after the rear end of the hood 4 is lifted (the time for lifting the rear end of the hood 4 is set to be less than the first preset time, it is understood that the first preset time can be set by referring to the time for lifting the hood 4 obtained by the test), the current is reduced by 10/5 to 2A at the first preset time, that is, the current is reduced from 10A to 8A after the first preset time, at this time, the repulsive force between the jacking device 6 and the magnetic component 54 is weakened, under the gravity action of the hood 4 and the pressure of the weak road utility, the hood 4 slides downwards, at this time, although the repulsive force between the jacking device 6 and the magnetic component 54 is weakened, still exists, under the buffering action of the repulsive force, the down-sliding speed of the hood 4 is slowed down, and similarly, the repulsive force is weakened again after the time is separated again by the first preset time, the repulsive force is gradually weakened but the repulsive force is immediately lost, namelyThe gliding of automobile hood 4 provides the cushioning effect, and simultaneously, repulsion weakens gradually, also provides the assurance for the reseing of automobile hood 4.
It can be understood, utilize the jacking ware to realize the jacking of automobile bonnet among the prior art, and the jacking ware is mostly the powder explosive, the powder point explodes the back, explosive force outwards releases the jacking ware, this jacking ware is disposable part completely, unable used repeatedly after the primary action, change and cost of maintenance are higher, and, after the lifting rod ejecting at the jacking ware, the lifting rod is because upper and lower atress, the bending takes place easily, consequently unable resilience decline after lifting rod jacking to the maximum height, because the fixed stay after the lifting rod jack-up, weak road user strikes automobile bonnet back on, the unable whole gliding of automobile bonnet, the guard action to weak road user has been reduced. In the embodiment, the magnetic component 54 is arranged on the lifting arm 53, the jacking device 6 is used for replacing a jacking device, the jacking device 6 is electrified to generate a magnetic field in the direction opposite to that of the magnetic component 54, the lifting device 5 is jacked based on the electromagnetic induction principle, so that the rear end of the automobile hood 4 is lifted, the jacking device 6 can be repeatedly used, and the replacement and maintenance cost of the jacking device 6 is reduced; and the output current of the power supply device 2 is controlled by the controller 4 to change according to a predefined rule, so that the electromagnetic force generated by the jacking device 6 after being electrified changes according to the predefined rule, and when a weak road user collides with the automobile hood 4, the whole automobile hood 4 can rotate downwards to a certain degree to buffer, so that the weak road user can be better protected.
It can be understood that the above predefined rule is only a preferred embodiment, and is not limited thereto, and a user may set a change rule of the initial output current and the subsequent current of the power supply device according to an actual requirement, where the change rule may be changed linearly, or may obtain non-linear change data according to multiple tests to set a non-linear change rule.
Example 2:
in this embodiment, as shown in fig. 3, the system further includes a current processor 3, the current processor 3 is electrically connected to the controller 1, and the controller 1 controls the current processor 3 to change the output current of the power supply device 2, so that the output current varies according to a predefined rule.
Preferably, the current processor 3 is a current amplifier. In this embodiment, after the controller 1 acquires the signal transmitted by the pre-collision sensor and evaluates that a weak road user is about to collide with the automobile, the first control unit controls the power supply device 2 to supply power to the jacking device 6, and the second control unit controls the current processor 3 to process the current output by the power supply device 2 according to a predetermined rule.
Further, the controller 1 controls the current processor 3 to process the output current according to a predefined rule. The predefined rule can be set according to actual requirements, and is not limited herein.
In one alternative, the predefined rule may be set as follows: the controller 1 controls the power supply device 2 to supply power to the jacking device 6 with an initial power supply current value, so that after the jacking device 6 is powered on, the generated electromagnetic force can just make the fixing part 57 cut off under the action of the electromagnetic force, the connecting arm 52 is separated from the lifting arm 53, and under the action of magnetic field repulsion, the lifting arm 53 drives the rear end of the automobile hood 4 to rotate around the first rotating shaft 55 together, so that the rear end of the automobile hood 4 is lifted under the action of the magnetic field repulsion. Further, after the rear end of the hood 4 is lifted, the controller 1 controls the current processor 3 to amplify the current of the power supply device 2 according to a predefined rule, for example, the current is amplified by the current I every first preset timem/4 wherein ImFor the previous current value, m takes 1, 2, 3. For the predefined rule, for example, when m is 1, the initial current value output by the power supply device 2 is set to be 8A, then after the rear end of the hood 4 is lifted (the time for lifting the rear end of the hood 4 is set to be less than the first preset time, it is understood that the first preset time can be set by referring to the time for lifting the hood 4 obtained by the test), the current is reduced by 8/4 to 2A at the first preset time, that is, the current is changed from 8A to 6A after the first preset time, at this time, the repulsive force between the jacking device 6 and the magnetic component 54 is reduced, and at this time, the repulsive force between the jacking device 6 and the magnetic component 54 is reducedUnder the action of gravity of automobile hood 4 and the pressure of the weak road user, the automobile hood glides downwards, at the moment, although the repulsive force between jacking device 6 and magnetic part 54 weakens, but still exist, under the cushioning effect of this repulsive force, the gliding speed of automobile hood 4 slows down to some extent, in the same way, after the first preset time of interval once more in time, the repulsive force weakens again, the repulsive force weakens gradually and the non-repulsive force loses immediately, the cushioning effect is provided for the gliding of automobile hood 4, and simultaneously, the repulsive force weakens gradually, also provide the assurance for the resetting of automobile hood 4.
It is understood that the above predefined rule is only a preferred embodiment, and is not limited thereto, and the user may set the change rule of the initial output current and the subsequent current of the power supply device 2 according to the actual requirement, where the change rule may be according to a linear change, or may obtain non-linear change data according to a plurality of tests to set the non-linear change rule.
Further, in the present embodiment, as shown in fig. 3 and fig. 4, the magnetic member 54 is embedded in the lifting portion 532 of the lifting arm 53, and the operation principle thereof is the same as the above-mentioned operation principle, and is not described herein again. Preferably, the magnetic member may be formed integrally with the lifting arm.
It is understood that, in the above embodiments 1 and 2, the magnetic member 54 may be preferably a magnet, or may be preferably an electromagnetic induction device that generates a magnetic force after being energized, and it should be clear that, regardless of using a magnet as the magnetic member or using an electromagnetic induction device as the magnetic member 54, the direction of the magnetic field generated by the magnetic member 54 is opposite to the direction of the magnetic field generated by the jacking device 6 after being energized, that is, the magnetic pole of the end of the jacking device 6 close to the magnetic member 54 is the same as the magnetic pole of the end of the magnetic member 54 close to the jacking device 6, and the two generate a repulsive force.
Example 3:
the application also provides an automobile which is provided with the protection system for the vulnerable road users.
Example 4:
the present application also provides a control method of a protection system for vulnerable road users, and the embodiment does not refer to the above embodiments.
Specifically, referring to fig. 5, the method includes:
s100, detecting a target object in front of a road, wherein the target object comprises a static object in the front road and a weak road user;
specifically, a target object in front of the road is detected by a pre-impact sensor. Preferably, the pre-collision sensor may include one or more millimeter wave radar (such as a long-distance millimeter wave radar), a camera (such as a monocular camera, etc.), an ultrasonic radar, a laser radar, etc., and the pre-collision sensing system may be a combination of any two or more of the foregoing, such as a long-distance millimeter wave radar and a monocular camera, where the maximum detection distance of the long-distance millimeter wave radar is up to 180 meters, the ranging accuracy is up to 0.175 meters, the speed measurement range is up to-80 to 80m/s, and the speed measurement accuracy is 0.05 m/s; the detection distance of the monocular camera to the users on the vulnerable road can reach 60-80m, and the combination of the monocular camera and the weak road can detect the users on the vulnerable road in front of the automobile in advance, the distance and the speed between the users and transmit signals to the controller.
S102, judging whether the user on the weak road collides with the automobile or not;
specifically, a judging module is arranged in the controller, and the controller judges whether a user on the weak road collides with the automobile or not through the judging module after receiving the signal received by the pre-collision sensor. Preferably, when determining whether the vulnerable road user will collide with the vehicle, the calculation may be performed according to the driving speed of the vehicle, the driving speed of the vulnerable road user, the distance between the vulnerable road user and the vehicle, and other information, which are transmitted by the pre-collision sensor, to obtain the collision probability between the vulnerable road user and the vehicle, and if the calculated collision probability exceeds a preset probability threshold, it is determined that the vehicle will collide with the pedestrian. It is understood that the specific calculation process of the collision probability is known to those skilled in the art according to the prior art and is not described in detail herein.
If the user of the vulnerable road is judged to collide with the automobile, step 104 is executed.
S104, controlling a power supply device to supply power to a jacking device so that the jacking device jacks the jacking device;
specifically, the step of lifting the lifting device by the lifting device according to the electromagnetic induction principle has been described in the foregoing, and is not described herein again.
Further, after the lifting device is lifted by the lifting device, the method further comprises:
s106, controlling the power supply device to change the output current or controlling the current processor to change the output current of the power supply device, so that the output current changes according to a predefined rule.
Specifically, the specific principle and operation of this step have been described in the above embodiments, and are not described herein again.
Example 5:
the present embodiment provides another control method for a protection system for a vulnerable road user, and the present embodiment does not refer to the above embodiments.
Specifically, referring to fig. 6, the method includes:
s200, detecting a target object in front of a road, wherein the target object comprises a static object in the front road and a weak road user;
s202, judging whether the user on the weak road collides with the automobile or not;
if the user of the vulnerable road is determined to collide with the automobile, step S204 is executed.
S204, judging whether the collision degree of the automobile and the user on the weak road reaches a preset collision degree or not;
specifically, the collision degree refers to the pre-collision speed of the automobile and the user on the vulnerable road, if the pre-collision speed is low, even if the automobile hood is not lifted and the air bag is sprayed out, the automobile front bumper cannot cause obvious damage to the user on the vulnerable road, and at the moment, if the automobile hood is lifted, the protection effect is not exerted, and unnecessary economic loss can be caused.
It is understood that the specific calculation process of the pre-crash velocity is known to those skilled in the art from the prior art and will not be described in detail herein.
If it is determined that the user on the vulnerable road collides with the vehicle and the degree of collision between the vehicle and the user on the vulnerable road reaches the predetermined degree of collision, step S206 is executed.
S206, controlling a power supply device to supply power to a jacking device so that the jacking device jacks the jacking device;
s208, controlling the power supply device to change the output current or controlling the current processor to change the output current of the power supply device, so that the output current changes according to a predefined rule.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A protection system for vulnerable road users is characterized by comprising a lifting device (5), a power supply device (2), a controller (1) and a jacking device (6), wherein the lifting device (5) is connected with an automobile hood (4), a magnetic component (54) is arranged on the lifting device (5),
the controller (1) controls the power supply device (2) to supply power to the jacking device (6),
the jacking device (6) is arranged below the lifting device (5) and used for jacking the lifting device (6) so as to lift the rear end of the automobile hood (4), the jacking device (6) generates electromagnetic force after being electrified, the electromagnetic force is changed according to a predefined rule,
the direction of the magnetic field of the magnetic component (54) is opposite to the direction of the magnetic field of the jacking device (6) after the jacking device is electrified.
2. The vulnerable road user protection system of claim 1, characterized in that said system further comprises a current processor (3), said current processor (3) being electrically connected with said controller (1), said controller (1) controlling said current processor (3) to vary the output current of said power supply means (2) so that the output current varies according to a predefined law.
3. The vulnerable road user protection system of claim 2, wherein said system further comprises a pre-impact sensor for detecting objects in the road ahead of the vehicle, said pre-impact sensor being electrically connected to said controller (1).
4. The vulnerable road user protection system of claim 3, wherein said controller comprises a determination unit, a first control unit and a second control unit, said determination unit being electrically connected with said pre-crash sensor, said first control unit being electrically connected with said power supply device (2), said second control unit being electrically connected with said current processor (3).
5. The system for protecting a vulnerable road user according to claim 1, wherein said lifting means (5) comprises a lifting arm (53), a connecting arm (52) and a mounting seat (51), said lifting arm (53) is connected with said car hood (4), one end of said connecting arm (52) is rotatably connected with said lifting arm (53), the other end of said connecting arm (52) is rotatably connected with said mounting seat (51), said mounting seat (51) is arranged on the car body.
6. The system for protecting a vulnerable road user according to claim 5, wherein said lifting arm (53) is provided with a fixing member (57) for fixedly connecting said lifting arm (53) with said connecting arm (52), said fixing member (57) being provided at one end of said lifting arm (53) rotatably connected with said connecting arm (52).
7. The system for the protection of vulnerable road users of claim 6, wherein said magnetic means (54) are arranged at the bottom of said lifting arm (53) or said magnetic means (54) are embedded inside said lifting arm (53).
8. A vehicle, characterized in that it has a protection system for vulnerable road users according to claims 1-7.
9. A method for controlling a protection system for vulnerable road users according to claims 1-7, wherein said method comprises:
detecting a target object in front of a road, wherein the target object comprises a static object in the road in front and a weak road user;
judging whether the user on the weak road collides with the automobile;
if the weak road user can collide with the automobile, the power supply device is controlled to supply power to the jacking device, so that the jacking device jacks the lifting device.
10. The method of claim 9, wherein after the lifting device lifts the lifting device, the method further comprises:
controlling a power supply device to change an output current or controlling a current processor to change the output current of the power supply device so that the output current changes according to a predefined rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677908.9A CN112277870A (en) | 2019-07-25 | 2019-07-25 | Protection system, automobile and control method for vulnerable road users |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910677908.9A CN112277870A (en) | 2019-07-25 | 2019-07-25 | Protection system, automobile and control method for vulnerable road users |
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| CN112277870A true CN112277870A (en) | 2021-01-29 |
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| CN201910677908.9A Pending CN112277870A (en) | 2019-07-25 | 2019-07-25 | Protection system, automobile and control method for vulnerable road users |
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Application publication date: 20210129 |