CN214240703U

CN214240703U - Protection system and vehicle

Info

Publication number: CN214240703U
Application number: CN202022781365.6U
Authority: CN
Inventors: 邓博; 李鹏; 郑兴华; 朱诗胜
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-09-21
Anticipated expiration: 2030-11-25

Abstract

The application discloses protection system relates to vehicle technical field. The protection system specifically comprises: a collision prevention device and a brake device; the anti-collision device comprises: the bumper comprises a bumper, a self-recovery buffer component and a reinforcing piece, wherein the bumper is detachably connected to the reinforcing piece through the self-recovery buffer component; the braking device includes: the brake device comprises a power supply, and an induction component, a control module and a brake mechanism which are respectively connected with the power supply; the sensing assembly is arranged on the bumper; the control module is respectively connected with the sensing assembly and the braking mechanism and is used for sending a control signal to the braking mechanism according to the current state signal of the vehicle detected by the sensing module; and the brake mechanism is used for carrying out corresponding brake control on the vehicle according to the control signal. In the embodiment of the application, can carry out the protection of two kinds of different forms to the vehicle through buffer stop and arresting gear to promote the barrier propterty of vehicle, reduce the probability that the vehicle received the impact damage.

Description

Protection system and vehicle

Technical Field

The application belongs to the technical field of vehicles, and particularly relates to a protection system and a vehicle.

Background

With the rapid development of the vehicle industry, the safety performance requirements of users on vehicles are higher and higher. In the prior art, the safety factor of the vehicle is improved mainly by improving the mechanical anti-collision performance of the vehicle. For example, the structural strength of a front bumper or a rear bumper of the vehicle and the connection strength between the front bumper or the rear bumper and the vehicle body are enhanced, so that the vehicle body is prevented from being damaged by collision, and the collision loss is reduced.

However, since the bumper is typically rigidly connected to the vehicle body, the impact resistance of the bumper is limited. When a strong collision occurs, most of impact force on the bumper is still transmitted to the vehicle body, so that the vehicle body is damaged, and the safety of people in the vehicle is endangered.

Disclosure of Invention

The embodiment of the application aims to provide a protection system and a vehicle, and the problem of low safety performance of the vehicle can be solved.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, an embodiment of the present application provides a protection system, where the protection system includes: a collision prevention device and a brake device;

the anti-collision device comprises: the bumper comprises a bumper, a self-recovery buffer assembly and a reinforcing piece, wherein the bumper is detachably connected to the reinforcing piece through the self-recovery buffer assembly;

the braking device includes: the brake device comprises a power supply, and an induction component, a control module and a brake mechanism which are respectively connected with the power supply; the sensing assembly is arranged on the bumper; the control module is respectively connected with the induction assembly and the brake mechanism; the control module is used for sending a control signal to the braking mechanism according to the current state signal of the vehicle detected by the sensing module; and the brake mechanism is used for carrying out corresponding brake control on the vehicle according to the control signal.

Optionally, the self-recovery buffer assembly includes: an air bag and an air spring;

one end of the gas spring is connected with the bumper, and the other end of the gas spring is connected with the reinforcing piece;

the air bag is sleeved at one end, close to the bumper, of the air spring.

Optionally, the number of the self-recovery buffer components is multiple;

the plurality of self-recovery buffer assemblies are arranged on the reinforcing member at preset intervals.

Optionally, the sensing assembly includes: a plurality of sensors;

the sensors are arranged on the bumper at intervals and are respectively electrically connected with the control module.

Optionally, the sensor includes at least one of an infrared sensor, a laser radar sensor, a millimeter wave radar sensor, and a vehicle speed sensor.

Optionally, the plurality of sensors includes at least one infrared sensor and at least two lidar sensors;

the infrared sensor is arranged in the middle of the bumper;

the laser radar sensors are respectively arranged on two sides of the infrared sensor.

Optionally, the braking mechanism comprises: the brake system comprises a hydraulic assembly and two brake assemblies connected with the hydraulic assembly;

one brake assembly is correspondingly arranged on one wheel hub of the vehicle;

the hydraulic assembly is also electrically connected with the control module and is used for outputting corresponding hydraulic pressure according to the control signal and transmitting the hydraulic pressure to the brake assembly.

Optionally, the bumper includes: the bumper comprises a first bumper main body, a second bumper main body and a third bumper main body which are sequentially connected;

the first bumper body, the second bumper body and the third bumper body are of an integrally formed structure or can be detachably connected.

Optionally, the bumper includes: at least one of a composite rubber bumper and a composite plastic bumper.

In a second aspect, an embodiment of the present application further provides a vehicle, including: the protection system is provided.

In this application embodiment, can carry out two kinds of different forms' protection to the vehicle through buffer stop and arresting gear to promote the barrier propterty of vehicle, reduce the probability that the vehicle received the impact damage. Specifically, on the one hand, form triple protective effect through bumper, self-resuming buffering subassembly and the reinforcement among the buffer stop to can carry out progressive buffering to the external force impact of different degrees. When the bumper is impacted by external force, the bumper is used as first heavy protection and buffering, then the self-recovery buffering assembly performs second heavy protection and buffering on the external force transmitted by the bumper, and finally the reinforcing member performs third heavy protection and buffering on the external force; on the other hand, the current state of the vehicle (for example, the distance between the vehicle and the obstacle, the relative speed between the vehicle and the obstacle, and the like) is monitored in real time through a sensing component in the braking device, the control module monitors and analyzes the current state data of the vehicle in real time, and sends different control signals to the braking mechanism according to the current state of the vehicle so as to perform braking control on the vehicle, so that the probability of damage caused by vehicle collision is further reduced by reducing the vehicle speed and the like.

Drawings

FIG. 1 is a schematic structural diagram of a protection system according to an embodiment of the present application;

FIG. 2 is a front view of the shield system shown in FIG. 1;

FIG. 3 is a right side view of the shield system shown in FIG. 1;

FIG. 4 is a top view of the shield system shown in FIG. 1;

FIG. 5 is a schematic structural diagram of a self-healing buffer assembly according to an embodiment of the present application;

FIG. 6 is a second schematic structural diagram of a self-healing buffer assembly according to an embodiment of the present application;

FIG. 7 is a schematic sectional view taken along the line A-A in FIG. 5;

FIG. 8 is a third exemplary diagram of a self-restoring buffer assembly according to an embodiment of the present application;

FIG. 9 is an enlarged partial view of the C position of FIG. 8;

FIG. 10 is a schematic view of a self-restoring buffer assembly according to an embodiment of the present application;

FIG. 11 is a second schematic view illustrating the deformation of the self-restoring buffer assembly according to the embodiment of the present application;

FIG. 12 is a schematic view of an infrared sensor in accordance with an embodiment of the present application;

FIG. 13 is a schematic illustration of a lidar sensor according to an embodiment of the present application;

FIG. 14 is a mechanical schematic diagram of a bump guard according to an embodiment of the present application;

FIG. 15 is a schematic diagram illustrating the sensing principle of the shield system according to the embodiment of the present application;

FIG. 16 is a control schematic of the shield system according to an embodiment of the present application;

fig. 17 is a brake flow diagram of a protection system according to an embodiment of the present application.

Description of reference numerals:

1: an obstacle; 2: a wire harness; 3: an oil pipe; 10: an anti-collision device; 20: a braking device; 11: a bumper; 12: a self-healing buffer component; 13: a reinforcement; 21: a power source; 22: an inductive component; 23: a control module; 24: a brake mechanism; 121: an air bag; 122: a gas spring; 1211: an air release and return valve; 221: a laser radar sensor; 222: an infrared sensor; 241: a hydraulic assembly; 242: a brake assembly; 111: a first bumper body; 112: a second bumper body; 113: a third bumper body; 2411: an oil tank; 2412: a brake oil pump; 2421: a brake; 2422: a brake disk.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

The terms first, second and the like in the description and in the claims of the present application 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 application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The protection system and the vehicle provided by the embodiment of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 1, a schematic structural diagram of a protection system according to an embodiment of the present application is shown. Referring to fig. 2, a front view of the shield system of fig. 1 is shown. Referring to fig. 3, a right side view of the shield system of fig. 1 is shown. Referring to FIG. 4, a top view of the shield system of FIG. 1 is shown.

In this embodiment, the protection system may specifically include: a bump guard 10 and a brake device 20; the collision prevention device 10 includes: a bumper 11, a self-restoring bumper component 12 and a reinforcement 13, the bumper 11 being detachably connected to the reinforcement 13 through the self-restoring bumper component 12; the brake device 20 includes: a power supply 21, and a sensing assembly 22, a control module 23 and a braking mechanism 24 respectively connected to the power supply 21; the sensing assembly 22 is disposed on the bumper 11; the control module 23 is respectively connected with the sensing assembly 22 and the braking mechanism 24; the control module 23 is used for sending a control signal to the brake mechanism 24 according to the current state signal of the vehicle detected by the sensing module; and the brake mechanism 24 is used for performing corresponding brake control on the vehicle according to the control signal.

In the embodiment of the present application, the above-mentioned protection system is generally disposed on a vehicle, specifically, the anti-collision device 10 is disposed at a head portion of the vehicle, and the bumper 11 can be further connected to a front side wing plate of the vehicle in a clamping manner, so that on one hand, appearance performance of the vehicle can be improved, and on the other hand, protection performance of the bumper 11 can also be improved. Of course, it is understood that the bumper 11 of the embodiment of the present application includes, but is not limited to, a front bumper or a rear bumper of a vehicle, which can be set by a person skilled in the art according to actual needs, and the embodiment of the present application is not particularly limited thereto.

In the embodiment of the present application, the reinforcement 13 may be an anti-collision beam or a reinforcement beam, and the reinforcement 13 may be specifically connected to a longitudinal beam of the vehicle or other portions on the frame of the vehicle, so as to enhance the anti-collision performance of the vehicle.

In the embodiment of the application, the vehicle can be protected in two different forms through the anti-collision device 10 and the braking device 20, so that the protection performance of the vehicle is improved, and the probability of the vehicle being damaged by collision is reduced. Specifically, on the one hand, a triple protection effect is formed by the bumper 11, the self-restoring buffer assembly 12 and the reinforcement 13 in the anti-collision device 10, so that external impacts of different degrees can be gradually buffered. When the bumper 11 is impacted by external force, the bumper 11 serves as first heavy protection and buffering, then the self-recovery buffering component 12 performs second heavy protection and buffering on the external force transmitted by the bumper 11, and finally the reinforcing part 13 performs third heavy protection and buffering on the external force; on the other hand, the sensing component 22 in the braking device 20 monitors the current state of the vehicle in real time (e.g., the distance between the vehicle and the obstacle 1, the relative speed between the vehicle and the obstacle 1, etc.), and the control module 23 monitors and analyzes the current state data of the vehicle in real time, and sends different control signals to the braking mechanism 24 according to the current state of the vehicle to perform braking control on the vehicle, so as to further reduce the probability of vehicle collision damage by reducing the vehicle speed, etc.

In the embodiment of the present application, the bumper 11 functions to cushion the impact force received by the primary bumper. The bumper 11 in the embodiment of the present application may be a composite rubber bumper 11, and the composite rubber material has good strength, plasticity, toughness, elasticity and resilience, so that the bumper 11 can be restored by itself without additional restoration if the received impact force does not reach the damage limit of the bumper 11.

In practical application, in order to make the bumper 11 have better protection buffering effect, the bumper 11 is usually matched with the shape of the vehicle head and is set to be arc-shaped so as to protect the vehicle head in multiple directions and full three-dimensional mode.

In this application embodiment, in order to reduce the design degree of difficulty, manufacturing cost and the later stage maintenance replacement cost of bumper 11, promote bumper 11's buffering shock attenuation performance, bumper 11 can also include: a first bumper body 111, a second bumper body 112, and a third bumper body 113, which are connected in this order. In practical applications, the second bumper body 112 is generally disposed at a position right in front of the vehicle head, the first bumper body 111 and the third bumper body 113 are disposed at two ends of the second bumper body 112, and the first bumper body 111 and the third bumper body 113 may have an arc shape to protect the vehicle head in all directions.

Specifically, in the embodiment of the present application, the first bumper main body 111, the second bumper main body 112, and the third bumper main body 113 are integrally formed, so as to improve the overall strength of the bumper 11. Alternatively, the first, second and

third bumper bodies

111, 112, 113 may be detachably connected, so that any one of the bumper bodies may be detached and replaced independently after being damaged, thereby reducing the maintenance cost of the bumper 11.

It should be understood that the above-mentioned splitting of the bumper 11 into three segments (the first bumper main body 111, the second bumper main body 112, and the third bumper main body 113) is only an example that the bumper 11 is split, and in practical applications, the bumper 11 may have two segments, four segments, and the like, and those skilled in the art may arbitrarily set according to needs, and the embodiment of the present application is not specifically limited to this.

In the embodiment of the present application, the bumper 11 functions as a primary buffer, and once the impact force applied to the bumper 11 exceeds a certain threshold (where the limit value may be 300N or other value according to the strength of the bumper 11), the self-recovery buffer assembly 12 can immediately perform a secondary buffer function to reduce the force applied to the bumper 11.

In this application embodiment, when receiving external force, buffer component 12 from resumeing can play the effect of effective buffering and damping through self deformation, and when buffer component 12 from resumeing did not surpass the damaged limit, buffer component 12 from resumeing can recover the original state after the external force disappears.

Optionally, the self-recovery buffer component 12 according to the embodiment of the present application may specifically include: the air bag 121 and the air spring 122; one end of the gas spring 122 is connected to the bumper 11, and the other end is connected to the reinforcement 13; the air bag 121 is sleeved on one end of the air spring 122 close to the bumper 11.

Referring to fig. 5, a schematic structural diagram of a self-recovery buffer assembly according to an embodiment of the present application is shown. Fig. 6 shows a second schematic structural diagram of the self-recovery buffer assembly according to the embodiment of the present application. Referring to fig. 7, a schematic view of the cross-sectional structure along the direction a-a in fig. 5 is shown. Referring to fig. 8, a third schematic structural diagram of a self-restoring buffer assembly according to an embodiment of the present application is shown. Referring to fig. 9, a partial enlarged view of the C position in fig. 8 is shown.

In practical applications, the air bag 121 is disposed around an end of the air spring 122 close to the bumper 11, and the air bag 121 is disposed in contact with the bumper 11. When the bumper 11 is deformed by external impact, the force on the bumper 11 can be transmitted to the air bag 121 and the air spring 122, so that the effect of buffering and damping is achieved through the air bag 121 and the air spring 122.

As shown in fig. 8 and 9, when the airbag 121 and the gas spring 122 receive the impact force F, the air is discharged (deflated) through the deflating and air-returning valve 1211, and when the impact force F disappears, the air is sucked through the deflating and air-returning valve 1211. Referring to fig. 10, a diagram illustrating a forced deformation of a self-restoring buffer assembly according to an embodiment of the present application is shown. As shown in fig. 10, when the impact force F ≧ N (in the embodiment of the present application, N ≧ 300N) is applied to the bumper 11, the airbag 121 deforms and moves under the impact force F, the gas spring 122 is compressed by the buffer, and the air bleed and air return valve 1211 exhausts by the pressure, thereby achieving the purpose of flexibly buffering the impact force F. Referring to fig. 11, a second schematic view of the self-restoring buffer assembly according to the embodiment of the present application under a deformation force is shown. As shown in fig. 11, when the collision force F applied to the air bag 121 and the air spring 122 is zero, the air bag 122 and the air bag 121 can also recover, the air release and return valve 1211 absorbs air under the supporting force, and the air bag 121 and the air spring 122 move in the opposite direction (opposite to the collision force F) under the air pressure until the state without the collision force F is recovered.

In the embodiment of the application, the air bag 121 and the air spring 122 may be connected by interference fit, or the air spring 122 and the air bag 121 may be fixedly connected by a fastener (bolt), or the air spring 122 and the air bag 121 may be connected by a stopper clamp, an inlay, a fixation, and the like. In the case that the impact force F received by the air bag 121 and the air spring 122 does not reach the damage limit of the air bag 121 and the air spring 122, both the air bag 121 and the air spring 122 can be self-recovered; after either the airbag 121 or the gas spring 122 is damaged by the impact force, it can be detached and replaced separately.

In the embodiment of the present application, in order to achieve a better damping and buffering effect, the number of the self-restoring buffer assemblies 12 is usually set to be plural, and the plural self-restoring buffer assemblies 12 are arranged on the reinforcement 13 at preset intervals. Alternatively, a plurality of the self-restoring buffer assemblies 12 are disposed at predetermined intervals on the bumper 11.

In the embodiment of the present application, the number of the self-restoring buffer assemblies 12 may be 4, and the arrangement of the self-restoring buffer assemblies on the reinforcing member 13 may be as follows: the two ends of the reinforcement 13 are respectively provided with one self-recovery buffer component 12, and the middle part of the reinforcement 13 is provided with two self-recovery buffer components 12 at intervals, and it can also be understood that the first bumper body 111 is connected with the reinforcement 13 through one self-recovery buffer component 12, the second bumper body 112 is connected with the reinforcement 13 through two self-recovery buffer components 12, and the third bumper body 113 is connected with the reinforcement 13 through one self-recovery buffer component 12. In the embodiment of the application, through setting up a plurality of self-resuming buffering subassemblies 12 to can receive the striking back in the optional position of bumper 11, all can carry out the shock attenuation of second grade buffering through self-resuming buffering subassembly 12, the effectual accident rate that has reduced.

In this embodiment, the sensing component 22 may specifically include: a plurality of sensors; the plurality of sensors are disposed on the bumper 11 at intervals and electrically connected to the control module 23, respectively. In practical application, through a plurality of sensors that the interval set up to the current state of detection vehicle that can be more accurate, and then carry out the braking of different degrees to the vehicle, reach more accurate braking vehicle, reduce the technological effect of accident rate.

Alternatively, the sensor may include at least one of an infrared sensor 222, a laser radar sensor 221, a millimeter wave radar sensor, a vehicle speed sensor, and the like.

In the embodiment of the present application, the purpose of using the infrared sensor 222, the laser radar sensor 221, or the millimeter wave radar sensor is to meet the accuracy of collecting information under different driving conditions, for example, in rainy, snowy, and foggy weather, the performance of the millimeter wave radar sensor can make up for the deficiency of the laser radar sensor 221; the lidar sensor 221 has the advantages of wider detection range and higher detection precision. Alternatively, the detection accuracy of laser radar sensor 221 is higher at a long distance, and the detection accuracy of infrared sensor 222 is higher at a short distance. The various sensors can be selected by those skilled in the art according to actual conditions, so that the technical effects of mutually matching and making up for deficiencies are achieved.

Referring to fig. 12, a schematic diagram of an infrared sensor of an embodiment of the present application is shown. Referring to fig. 13, a schematic diagram of a lidar sensor according to an embodiment of the present application is shown.

In practical applications, the infrared sensor 222 (or the infrared camera) can accurately measure information of an obstacle 1 (a person, an animal, a building, a plant, etc.) in front of the vehicle, calculate information such as a relative speed and a relative distance between the vehicle and the obstacle 1 according to the information of the obstacle 1, and transmit the information to the control module 23, so that the control module 23 sends different control signals to the braking mechanism 24 according to the information such as the relative speed and the relative distance, and the braking mechanism 24 performs corresponding braking control on the vehicle according to the control signals. Similarly, the lidar sensor 221 may also precisely measure information of the obstacle 1 (human, animal, building, plant, etc.) in front of the vehicle, calculate information such as a relative speed and a relative distance between the vehicle and the obstacle 1 from the information of the obstacle 1, and transmit the information to the control module 23.

In practical application, infrared camera and laser radar measure the distance of barrier 1, visual angle range and precision respectively are different, consequently, for relative distance, relative speed isoparametric between barrier 1 and the vehicle of more accurate, diversified full solid, a plurality of sensors can include at least one infrared sensor 222 and at least one laser radar sensor 221 in this application embodiment, so that infrared sensor 222 and laser radar sensor 221 mutually support, thereby reach higher response precision, promote the security performance of vehicle.

In this embodiment, the lidar sensor 221 generally includes a main lidar and an auxiliary lidar, that is, the lidar (main and auxiliary) sensors are abbreviated, and in this embodiment, the left lidar (main and auxiliary) and the left lidar (main and auxiliary) indicate two lidar sensors 221 symmetrically disposed on the vehicle.

In the embodiment of the present application, the plurality of sensors may be the same or at least partially the same. For example, the plurality of sensors may include at least one infrared sensor 222 and at least two lidar sensors 221; the infrared sensor 222 is disposed in the middle of the bumper 11; the lidar sensors 221 are respectively disposed at both sides of the infrared sensor 222. Like this, can carry out all-round (left, preceding, right), the barrier 1 detection of multi-angle to the vehicle through infrared sensor 222, laser radar sensor 221, and then effectively promote the barrier propterty of vehicle.

Referring to fig. 14, a mechanical schematic diagram of the anti-collision device according to the embodiment of the present application is shown. In practical application, when the bumper 11 receives impact forces of F1, F2 and F3 in the figure, the bumper 11 firstly buffers a part of the impact force through bending deformation of the bumper 11, and the like, the rest of the impact force is continuously transmitted to the airbag 121 and the gas spring 122, the airbag 121 and the gas spring 122 achieve a double-buffer vibration damping effect, the impact force is continuously transmitted to the reinforcement 13 after being buffered and damped by the airbag 121 and the gas spring 122, the reinforcement 13 achieves a triple-buffer vibration damping effect, the reinforcement 13 continuously absorbs the transmitted impact force, and the effect of absorbing and buffering the impact force is achieved by changing internal stress, deformation and the like of the reinforcement 13.

For example, when the barrier 1 is subjected to the impact force F1 on the right side, i.e., the right side, the impact force F1 is transmitted to the first bumper body 111, the first bumper body 111 is deformed by force to transmit force to the air bag 121 and the gas spring 122, the air bag 121 and the gas spring 122 are buffered by force, when the impact force is greater than or equal to 300N, the gas stored in the air bag 121 is discharged out through the air release and return valve 1211 to achieve flexible buffering of the impact force, and the gas spring 122 also buffers the impact force; when the impact force F1 is zero (i.e., the impact force is buffered and consumed), the gas spring 122 extends, the gas return valve 1211 absorbs air under the supporting force, and the gas bag 121 recovers under the gas pressure. In addition, if the impact force is much greater than 300N, the airbag 121 and the gas spring 122 will be damaged and deformed to the limit, and the impact force F1 will transmit the force to the reinforcement 13 to continue to absorb the deformation caused by the external force and the internal stress, so as to further absorb and buffer the rest impact force. Similarly, when the obstacle 1 is subjected to the impact force F3 on the left side, i.e., the left side, the process is the same. When the obstacle 1 is subjected to the impact force F1, the impact force F2 and the impact force F3 in the middle of a larger force-bearing area, the process is the same as the above process, except that the bumper 11 (the first bumper body 111, the second bumper body 112 and the third bumper body 113), and all the airbags 121 and the gas springs 122 between the bumper 11 and the reinforcement 13 are subjected to force deformation under the action of the impact forces F1, F2 and F3, so that the impact force is flexibly buffered.

In the embodiment of the present application, the reinforcement 13 may be a steel structure, an aluminum alloy beam, or the like. In practical application, the steel structure has better strength and stronger anti-collision capability. When the aluminum alloy roof beam receives the impact, elasticity and ductility are better, consequently, the aluminum alloy roof beam can have better anticollision as reinforcement 13, the deformation effect of preapring for an unfavorable turn of events.

In the embodiment of the present application, the power supply 21 may be a main power supply on the vehicle, or may be a power supply separately provided for the protection system, which is not specifically limited in this embodiment of the present application. Specifically, the power source 21 may include, but is not limited to, a lead-acid battery, a nickel-cadmium battery, a nickel-iron battery, a nickel-hydrogen battery, a lithium-ion battery, etc., and may be set by those skilled in the art according to actual requirements. The power supply 21 may provide different supply voltages to different electrical devices. For example, the power source 21 may provide a 24V supply voltage to the brake oil pump 2412.

In this embodiment, the control module 23 may include a controller, and the controller receives sensing signals of the infrared sensor 222 and the lidar sensor 221, processes and determines whether to output a braking instruction to the braking mechanism 24, so that the braking mechanism 24 brakes the vehicle.

In the embodiment of the present application, optionally, the braking mechanism 24 may specifically include: a hydraulic assembly 241, and two brake assemblies 242 connected to the hydraulic assembly 241; one brake assembly 242 is correspondingly arranged on one wheel hub of the vehicle; the hydraulic assembly 241 is also electrically connected to the control module 23, and the hydraulic assembly 241 is configured to output a corresponding hydraulic pressure according to the control signal and transmit the hydraulic pressure to the brake assembly 242. Specifically, the hydraulic assembly 241 may include an oil tank 2411 and a brake oil pump 2412 connected to the oil tank 2411, where the brake oil pump 2412 is electrically connected to the control module 23 to execute a braking command sent by the control module 23. Brake assembly 242 includes a brake 2421 and a brake disc 2422 (brake disc) connected to brake 2421, brake 2421 is connected to brake oil pump 2412 through oil pipe 3, and brake disc 2422 can be connected to a wheel hub.

In the present embodiment, the oil tank 2411 is connected to the brake oil pump 2412 via the oil pipe 3, and the oil tank 2411 stores brake fluid and dynamically supplies the stored brake fluid to the brake oil pump 2412. The brake oil pump 2412 converts the electric energy into hydraulic pressure, and transmits the hydraulic pressure to the brake 2421 through the brake fluid in the oil pipe 3, and the brake 2421 converts the hydraulic pressure into mechanical brake force to brake the wheel hub of the vehicle through the brake disc 2422, so as to realize service braking.

In the embodiment of the present application, the brake assemblies 242 (the brake 2421 and the brake disc 2422) are generally symmetrically disposed on two wheel hubs of the vehicle, which may be referred to as a left brake assembly 242 and a right brake assembly 242, that is, the left brake assembly 242 includes a left brake 2421 and a left brake disc 2422, and the right brake assembly 242 includes a right brake 2421 and a right brake disc 2422. In the embodiment of the application, the two brake assemblies 242 are symmetrically arranged on two wheel hubs of the vehicle, so that the braking force of the vehicle is more balanced, the braking is more stable, and the effect is better.

In the embodiment of the present application, the sensors such as the laser radar sensor 221 and the infrared camera, the control module 23, the brake oil pump 2412, and the like are connected to the power supply 21 through power lines, and the control module 23 is connected to the sensors such as the laser radar sensor 221 and the infrared camera, the brake oil pump 2412, and the like through Controller Area Network (CAN) lines. The power line is used for transmitting the electric energy provided by the power supply 21 to the laser radar sensor 221, the infrared camera and other sensors, the control module 23, the brake oil pump 2412 and the like through the power line. The CAN line is used to transmit information of the laser radar sensor 221 (master, slave), the left infrared camera and the infrared camera to the control module 23 (such as sensor signals and fault signals), or the CAN line CAN be used to transmit an execution command sent by the control module 23 to the brake oil pump 2412 and receive a fault signal of the brake oil pump 2412. Of course, those skilled in the art will appreciate that the CAN lines are used for all signal transmissions and that the function of the CAN lines described above is merely illustrative.

It will be appreciated that the control module 23 may also be connected to other communication modules on the vehicle via a CAN line to perform various functions. For example, the control module 23 may also be connected to the wireless communication module to transmit the vehicle status information to a mobile phone or a computer terminal device of the user in real time, so that the user can know the vehicle dynamics more intuitively and timely.

Referring to fig. 15, a schematic diagram of an inductive principle of the protection system according to the embodiment of the present application is shown. As shown in fig. 15, the sensing areas of lidar sensor 221 and infrared sensor 222 are shown by dashed lines. In practical application, when the obstacle 1 is on the right side of the vehicle, the laser radar (main and auxiliary) senses information of the obstacle 1 and the obstacle 1 (people, animals, buildings, plants, and the like) through the fan-shaped area, and accurately calculates the relative speed, the relative distance, and the like between the obstacle 1 and the vehicle through the information of the obstacle 1, the information is transmitted to the control module 23 in the form of sensor signals, and the control module 23 receives the sensor signals, processes and judges whether to output a braking instruction to the brake oil pump 2412 so as to brake the vehicle through the brake 2421 and the brake disc 2422. When the obstacle 1 is on the left side, the principle is the same. When the obstacle 1 is in the middle sector area, the infrared camera senses information of the obstacle 1 (people, animals, buildings, plants and the like), calculates relative speed, relative distance and the like between the obstacle 1 and a vehicle according to the information of the obstacle 1, transmits the information to the control module 23 through a CAN (controller area network) line, receives the sensor signal, processes and judges whether to output a braking instruction to the brake oil pump 2412 and brake the vehicle so as to brake the vehicle through the brake 2421 and the brake disc 2422.

Referring to fig. 16, a control schematic diagram of the protection system according to the embodiment of the present application is shown. Referring to fig. 16, the shield system is divided into three parts: the first part is a control module 23, namely a controller, the controller module is electrically connected with sensors (an infrared sensor 222, a laser radar) and an actuator (a brake oil pump 2412) through a wiring harness 2 (a power line, a CAN line and the like), and the control module 23 is used for receiving signals of the sensors (sensor signals of the laser radar, an infrared camera and the like), processing the signals and judging whether to output a brake instruction to the brake oil pump 2412 for braking; a second part, a sensor part including a laser radar (main, sub) right, a laser radar (main, sub) left, an infrared camera, etc., for sensing information of the obstacle 1 (human, animal, building, plant, etc.), calculating a relative speed, a relative distance, etc., between the obstacle 1 and the vehicle according to the information of the obstacle 1, and transmitting the information to the control module 23; and the third part, an actuator part, including a brake oil pump 2412 and the like, is used for receiving and executing the brake command transmitted by the control module 23, and outputting corresponding brake fluid pressure to the brake disc 2422, so as to brake the vehicle.

Referring to fig. 17, a braking flow chart of the protection system according to the embodiment of the present application is shown, where the braking flow chart includes:

step 101, controlling a module system to operate, and judging whether a sensor signal is received; if yes, go to step 103; if not, the braking instruction is not output, and the sensor signal is continuously and circularly judged whether to be received or not.

103, whether a braking instruction is output or not; if yes, go to step 105; otherwise, the braking instruction is not output.

105, braking preparation output, judging the relative speed between the obstacle and the vehicle according to the received sensor signal, and outputting a corresponding braking instruction;

if the relative speed between the obstacle and the vehicle is less than or equal to 30km/h, outputting a braking instruction of slow braking, and outputting a first braking force by a braking oil pump to perform service braking;

if the relative speed between the obstacle and the vehicle is more than 30km/h and more than 60km/h, outputting a braking instruction of medium-speed braking, and outputting a second braking force by the brake oil pump to perform service braking;

if the relative speed between the obstacle and the vehicle is more than or equal to 60km/h and more than 90km/h, outputting a braking instruction of high-speed braking, and outputting a third braking force by a brake oil pump to perform service braking;

and if the relative speed between the obstacle and the vehicle is more than or equal to 90km/h, the braking instruction is not output.

In the embodiment of the application, the first braking force is smaller than the second braking force and smaller than the third braking force.

It can be understood that, in the braking process, even if the relative speed between the obstacle and the vehicle is less than or equal to 30km/h, the braking instruction still can not be output, and other braking processes are the same. That is, in practical applications, the user can control the output of the braking command at any time according to actual needs, not only limited to the above-mentioned definition of the relative speed between the obstacle and the vehicle.

In addition, the braking control logic of the embodiment of the application is matched with other braking of the vehicle (for example, braking is carried out by stepping on the brake), so that the braking of the vehicle is more timely, and the braking effect is better.

In the embodiment of the present application, the determination of the relative speed between the obstacle and the vehicle may be performed simultaneously, or may be performed sequentially, for example, first, whether the relative speed between the obstacle and the vehicle is less than or equal to 30km/h, if not, the step of "determining 60km/h > relative speed between the obstacle and the vehicle > 30 km/h" may be performed continuously, and if not, the step of "relative speed between the obstacle and the vehicle is greater than or equal to 90 km/h" may be performed continuously, or the step of relative speed may be performed simultaneously, which is not specifically limited in the embodiment of the present application.

It is to be understood that, in the embodiments of the present application, only the above-described steps of making a determination by the relative speed between the obstacle and the vehicle to output a different braking instruction are exemplarily explained and explained. The judgment threshold values (30km/h, 60km/h and 90km/h) can be adaptively adjusted according to requirements. Similarly, the judgment basis of different braking instructions can also be a parameter of the relative distance between the obstacle and the vehicle, or two parameters of the relative distance between the obstacle and the vehicle can be judged according to the relative speed between the obstacle and the vehicle, so that the driving braking can be performed more accurately, and the safety performance of the vehicle can be improved. One skilled in the art may set different parameters according to different sensors, and the embodiment of the present application is not limited in this respect.

In summary, the protection system according to the embodiment of the present application at least includes the following advantages:

The embodiment of the application also provides a vehicle which specifically comprises the protection system.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A protection system for a vehicle, comprising: a collision prevention device and a brake device;

the anti-collision device comprises: the bumper comprises a bumper, a self-restoring buffer component and a reinforcing piece, wherein the bumper is detachably connected to the reinforcing piece through the self-restoring buffer component;

the braking device includes: the brake device comprises a power supply, and an induction component, a control module and a brake mechanism which are respectively connected with the power supply; the sensing assembly is arranged on the bumper; the control module is respectively connected with the induction assembly and the brake mechanism; the control module is used for sending a control signal to the brake mechanism according to the current state signal of the vehicle detected by the sensing assembly; and the brake mechanism is used for carrying out corresponding brake control on the vehicle according to the control signal.

2. The shield system of claim 1, wherein the self-healing buffer assembly comprises: an air bag and an air spring;

the air bag is sleeved at one end, close to the bumper, of the air spring.

3. The shield system of claim 1, wherein the number of self-healing buffer assemblies is plural;

4. The shielding system of claim 1, wherein the sensing assembly comprises: a plurality of sensors;

5. The shield system of claim 4, wherein the sensor comprises: at least one of an infrared sensor, a laser radar sensor, a millimeter wave radar sensor and a vehicle speed sensor.

6. The shielding system of claim 5, wherein the plurality of sensors includes at least one of the infrared sensor and at least two of the lidar sensors;

the infrared sensor is arranged in the middle of the bumper;

7. The shield system of claim 1, wherein the brake mechanism comprises: the brake system comprises a hydraulic assembly and two brake assemblies connected with the hydraulic assembly;

one brake assembly is correspondingly arranged on one wheel hub of the vehicle;

8. The protective system of claim 1, wherein the bumper comprises: the bumper comprises a first bumper main body, a second bumper main body and a third bumper main body which are sequentially connected;

9. The protective system of claim 1, wherein the bumper comprises: at least one of a composite rubber bumper and a composite plastic bumper.

10. A vehicle, characterized in that the vehicle comprises: the shield system of any one of claims 1 to 9.