CN115817383A - Anti-collision rear bumper interaction system and method - Google Patents
Anti-collision rear bumper interaction system and method Download PDFInfo
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- CN115817383A CN115817383A CN202211512839.4A CN202211512839A CN115817383A CN 115817383 A CN115817383 A CN 115817383A CN 202211512839 A CN202211512839 A CN 202211512839A CN 115817383 A CN115817383 A CN 115817383A
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Abstract
The invention provides an anti-collision rear bumper interaction system, which comprises: the controllable air bag assembly is arranged inside the rear bumper; the detection system is arranged on the rear bumper; the display system is arranged on the rear bumper; the vehicle controller is respectively connected with the controllable air bag assembly, the detection system and the display system, and the detection system sends the detected signals to the vehicle controller; the display system acquires and displays the driving information of the vehicle sent by the vehicle controller; and when the vehicle controller judges whether the vehicle has the risk of rear-end collision according to the signal sent by the detection system, if so, the vehicle controller controls the display system to warn. The invention also relates to a method for interacting the anti-collision rear bumper of the vehicle by using the anti-collision rear bumper interaction system of the vehicle, wherein the current vehicle brakes and prompts the rear vehicle to pay attention to avoidance in a striking way through the display system; when the active safety fails, the vehicle damage is reduced through the passive safety airbag, so that the safety of drivers and passengers is guaranteed.
Description
Technical Field
The invention relates to a vehicle anti-collision design scheme, in particular to an anti-collision rear bumper interaction system and an anti-collision rear bumper interaction method.
Background
With the continuous progress of society, automobiles are more and more popularized, the number of automobiles is rapidly increased, the accompanying safety accidents are also continuously increased, the accident rate of rear-end collision and the like is very high, the front automobile and the rear automobile often cause rear-end collision accidents because the distance between the front automobile and the rear automobile is not kept, the response is too slow, or the braking performance is poor, and particularly, the continuous rear-end collision accidents of multiple automobiles often occur on a highway in rainy days.
Although vehicle intelligentization and personalized configuration are applied more and more, and intelligent personalized configurations such as vehicle laser radars, cameras and safety systems are applied more and more on automobiles, the intelligent components lack effective information interaction efficiency between front vehicles and rear vehicles, and the efficiency is low. For example, the information of the front vehicle on high speed, such as point braking, emergency braking, real-time vehicle speed and vehicle distance cannot be efficiently and interactively communicated, rear-end accidents are still frequent, and the severity of damage and the maintenance cost of the front vehicle and the rear vehicle after rear-end collision are higher. In order to ensure the safety of driving passengers, a device for reducing the impact force of the automobile and preventing the rear-end collision and the collision accident of the automobile is designed, and an anti-collision rear bumper interaction system and method are introduced to realize the efficient interaction of information such as the braking force, the real-time speed, the distance between a driver in a front automobile and a rear automobile. Meanwhile, even if the active safety of the front automobile fails, the automobile damage is reduced and the safety of drivers and passengers is ensured through passive safety, so that the safety performance of the automobile is improved.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide an anti-collision rear bumper interaction system and method, which are used to solve the problems in the prior art that when active safety fails, vehicle damage is reduced and safety of driving passengers is guaranteed through passive safety of a vehicle, and traffic accident quick combing is also guaranteed to reduce traffic jam pressure after a traffic accident.
To achieve the above and other related objects, the present invention provides a rear bumper collision avoidance interaction system and method, including:
the controllable air bag assembly is arranged inside the rear bumper;
the detection system is arranged on the rear bumper;
the display system is arranged on the rear bumper;
a vehicle controller connected to the controllable airbag assembly, the detection system, and the display system, respectively, the detection system sending the detected signals to the vehicle controller;
the display system acquires and displays the driving information of the vehicle sent by the vehicle controller;
and when the vehicle controller judges whether the vehicle has the risk of rear-end collision according to the signal sent by the detection system, if so, the vehicle controller controls the display system to warn.
In an embodiment of the present invention, the controllable airbag assembly includes an airbag, a gas generator, and a controllable airbag controller, the airbag is provided with the gas generator and is connected to the gas generator through a pipeline, and the controllable airbag controller is connected to the gas generator, so that the controllable airbag controller receives a control signal from the vehicle controller to control the gas generator to inflate the airbag.
In an embodiment of the present invention, the detection system includes a detection radar and a detection camera, the detection radar and the detection camera respectively detect and obtain signals, and the vehicle controller obtains the detection signals of the detection radar and the detection camera and calculates the driving information of the vehicle; the driving information of the vehicles comprises the distance between the front vehicle and the rear vehicle, the speed of the front vehicle, the speed of the rear vehicle and the speed difference of the front vehicle and the rear vehicle; the display system comprises a rear bumper display screen and a light-transmitting interactive display area, wherein the rear bumper display screen acquires and displays driving information of the vehicle calculated by the vehicle controller; the mutual display area of printing opacity is the printing opacity material, works as when rear bumper display screen does not show, the mutual display area of printing opacity with rear bumper's colour keeps unanimous.
In an embodiment of the present invention, when the vehicle controller obtains the signal of the detection system, the vehicle controller obtains real-time data of the positioning device of the vehicle in real time, and the vehicle controller guides the obtained signal to an advanced driving assistance system of the vehicle to calculate real-time data of a vehicle distance between the front vehicle and the rear vehicle of the vehicle, a vehicle speed of the front vehicle, a vehicle speed of the rear vehicle, and a vehicle speed difference between the front vehicle and the rear vehicle.
In an embodiment of the present invention, the operation modes of the system include a vehicle stationary mode, a vehicle driving mode, an active safety mode and a passive safety mode; in the vehicle static mode, the system is in a self-checking state, the vehicle controller acquires signals of the detection system and the positioning device and confirms that the vehicle is in a static state, and the controllable air bag assembly and the controller of the display system perform system self-checking operation; in the vehicle running mode, the system is in a dynamic monitoring state, the vehicle controller acquires signals of the detection system and the positioning device in real time and calculates that the vehicle is out of the preset safe distance range, the vehicle controller sends the running information to the display system for the display of the vehicle, and the controllable air bag assembly keeps in a silent state.
In an embodiment of the present invention, in the active safety mode, the system enters an early warning state, the vehicle controller obtains that a braking system of the vehicle is triggered, then the vehicle controller obtains signals of the detection system and the positioning device and calculates the driving information of the vehicle, the vehicle controller sends the driving information to the display system and controls the controllable airbag assembly to enter the active safety state, and the display system reminds a following vehicle of the driving information of the vehicle in a warning manner.
In an embodiment of the present invention, in the passive safety mode, when the vehicle controller detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the system enters a safety protection state, the vehicle controller sends a control signal to the controllable airbag controller of the controllable airbag assembly, the controllable airbag controller controls the gas generator to inflate the airbag, and the airbag absorbs the kinetic energy generated by the rear-end collision.
The invention also relates to a method for interacting the vehicle anti-collision rear bumper by using the system, which is characterized by comprising the following steps:
step S1: when a vehicle controller obtains and judges that a vehicle is in a vehicle static mode, detecting that a controllable air bag assembly and a display system of the vehicle are in a normal running state through the system, wherein the controllable air bag assembly and the display system are in a static state;
step S2: the vehicle controller judges that the vehicle is in a vehicle running mode, the system is in a dynamic monitoring state, the vehicle controller obtains and calculates that the distance between the front vehicle and the rear vehicle is beyond the safe distance, and the display system obtains and displays the running information of the vehicle controller;
and step S3: when the vehicle controller acquires a signal that a braking system of the vehicle is triggered, the system enters an early warning state, the vehicle controller judges that the vehicle enters an active safety mode, the display system acquires and displays driving information of the vehicle controller, the vehicle controller sends the active safety mode signal to the controllable air bag assembly, and the controllable air bag assembly enters the early warning state;
and step S4: and the vehicle controller detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the vehicle controller sends a passive safety mode signal to the controllable air bag assembly, and the controllable air bag assembly enters a safety protection state.
In an embodiment of the present invention, in step S1, the vehicle controller monitors that parameters of the detection system and the positioning device are not changed, that is, determines that the vehicle is in a stationary mode, the display system does not obtain the driving information, a light-transmitting interactive display area of the display system has a color consistent with that of a rear bumper, and the controllable airbag assembly maintains a preset air pressure; in the step S2, the vehicle controller obtains two coordinate points of a positioning device of the vehicle within a period of time to calculate a vehicle speed of the vehicle; the detection system emits electromagnetic waves and obtains return time, the vehicle controller obtains the return time of the detection system, and the vehicle running information is calculated according to a Doppler effect formula and is compared with a configuration file of the system for judgment; and if the comparison result of the vehicle is beyond the range of the preset safe vehicle distance, the system judges that the vehicle is in a running mode.
In an embodiment of the present invention, in step S3, the vehicle controller obtains a braking signal of the braking system through a data bus, and the vehicle controller obtains a detection signal of the detection system and determines whether a vehicle distance between the front vehicle and the rear vehicle and a vehicle speed difference between the front vehicle and the rear vehicle are within a preset passive safety range; if not, the system enters the active safety mode, the display system acquires and displays the driving information in a striking mode, and a controllable air bag controller of the controllable air bag assembly detects whether the air pressure of the air bag is in a preset air pressure; in the step S4, in the passive safety mode, the vehicle controller obtains signals of the detection system and the positioning device, and calculates whether a vehicle distance between the front vehicle and the rear vehicle and a vehicle speed difference between the front vehicle and the rear vehicle are within the preset passive safety range; if yes, the vehicle controller sends a control signal to a controllable air bag controller of the controllable air bag assembly, and the controllable air bag controller controls the gas generator to inflate the air bag to a filling state.
As described above, the system and method for interacting with the rear bumper has the following beneficial effects:
when a vehicle runs, the information between the front vehicle and the rear vehicle cannot be efficiently communicated due to the braking of the front vehicle, so that a rear-end collision accident occurs. The invention provides an anti-collision rear bumper interaction system and method, which realize an interaction display function through a detection system, a positioning device, a vehicle controller and a controllable air bag and inform a rear vehicle of the running information of a front vehicle. When the current vehicle has a braking condition, warning a driver of the rear vehicle to pay attention; when the distance between the front car and the rear car is too close, the controllable air bags are used for absorbing energy, the damage of the cars is reduced through a passive safety technology, and the safety of drivers and passengers is guaranteed.
Drawings
Fig. 1 is a system architecture diagram of a rear bumper collision avoidance interaction system of the present invention.
Fig. 2 is a flowchart illustrating a method for interacting with a rear bumper according to the present invention.
FIG. 3 is a partially exploded perspective schematic view of a vehicle mounted with the system of FIG. 1.
Fig. 4 is a partial perspective view of the system of fig. 3.
Fig. 5 is a schematic diagram illustrating the operation principle of the method for interacting with a rear bumper in a stationary mode of a vehicle according to the present invention.
Fig. 6 is a schematic diagram illustrating the operation principle of the method for interacting with a rear bumper in a vehicle driving mode according to the present invention.
Fig. 7 is a schematic diagram illustrating an operation principle of the method for interacting with a rear bumper in an active safety mode according to the present invention.
Fig. 8 is a schematic diagram illustrating the working principle of the method for interacting with a rear bumper in the passive safety mode according to the present invention.
Fig. 9 is a schematic view of another perspective of a rear bumper mounted with the system of fig. 1.
Description of the element reference numerals
A rear bumper 1;
a controllable air bag assembly 2, an air bag 21, a gas generator 22, a controllable air bag controller 23 and a fixed bracket 24;
a detection system 3, a detection radar 31, a detection camera 32;
the display system 4, a rear bumper display screen 41, a light-transmitting interactive display area 42;
a rear vehicle body impact beam 5;
a vehicle controller 6;
a vehicle body side member 7;
a vehicle body metal plate 8;
a positioning device (not labeled), and a braking system (not labeled).
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. It is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the respective manufacturers.
Please refer to fig. 1 to 8. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, the present invention provides a vehicle rear bumper collision avoidance interaction system, including: the rear bumper 1 is a rear bumper of a vehicle; the controllable air bag assembly 2 is arranged inside the rear bumper 1; the detection system (3) is arranged on the rear bumper 1; the display system 4 is provided on the rear bumper 1. The vehicle controller 6 is respectively connected with the controllable air bag assembly 2, the detection system 3 and the display system 4, and the detection system 3 sends detected signals to the vehicle controller 6. The display system 4 acquires and displays vehicle traveling information transmitted from the vehicle controller 6. When the vehicle controller 6 judges that the vehicle is in the risk of rear-end collision according to the signal sent by the detection system 3, the vehicle controller 6 controls the display system 4 to give a warning.
As can be seen from fig. 3 and 4, the rear bumper 1 of the vehicle is fixedly connected to the vehicle body longitudinal beam 7, and the upper portion of the rear bumper 1 is also fixedly connected to the vehicle body metal plate 8 of the vehicle, and the connection manner may be a fastener connection, or other suitable connection manner. The vehicle body rear anti-collision beam 5 is also fixed on the vehicle body longitudinal beam 7, and the connection mode can be fastener connection or other suitable connection modes. The rear anti-collision beam 5 of the vehicle body can be used for absorbing energy after the vehicle is collided. The vehicle controller 6 is further disposed at one end of the vehicle body side member 7, and the vehicle controller 6 is used for calculating and processing vehicle operation data, and may be a vehicle ECU (Electronic Control Unit) Electronic Control Unit, or other suitable vehicle processor. The vehicle controller 6 may also be located in other suitable fixed locations in the vehicle. A controllable air bag assembly 2 is also arranged between the rear bumper 1 and the rear anti-collision beam 5 of the vehicle body. The controllable air bag assembly 2 comprises an air bag 21, an air generator 22, a controllable air bag controller 23 and a fixed bracket 24.
As can be seen from fig. 9, the controllable airbag assembly 2 is fixedly connected to the rear bumper 1 by the fixing bracket 24, and the connection mode can be a fastener connection, and can also be other suitable connection modes. The airbag 21 is provided with a gas generator 22, and the gas generator 22 is connected to the airbag 21 through a pipe and is responsible for inflating the airbag 21. The controllable airbag controller 23 is electrically connected to the gas generator 22 and the vehicle controller 6, respectively, so that the controllable airbag controller 23 receives a control signal from the vehicle controller 6 and can control the gas generator 22 to inflate the airbag 21. The airbag 21 is a conventional airbag and is fixed to the inner side of the rear bumper 1 by a fixing bracket 24, and the fixing means may be a fastening means or other suitable means. The upper part and the lower part of the air bag 21 are fixedly connected with the fixing bracket 24, so that the air bag 21 can stably play an energy absorption role. The inflator 22 and the controllable airbag controller 23 are fixedly connected to the rear bumper 1 by a fixing bracket 24, which may be a fastener or other suitable connection. The gas generator 22 and the controllable airbag controller 23 may be conventional vehicle controllers and gas generators for vehicles. The mounting bracket 24 may be plastic or other suitable material. Meanwhile, it should be noted that the structure of the controllable airbag assembly 2 provided by the present invention is only a preferred embodiment, and the controllable airbag assembly 2 composed of the airbag 21, the gas generator 22, the controllable airbag controller 23 and the fixing bracket 24 may be other suitable designs.
The detection system 3 is fixedly connected with the rear bumper 1, and can be arranged at other suitable positions at the rear part of the vehicle. The detection system 3 is a conventional arrangement of a vehicle and includes a plurality of detection radars 31 and a plurality of detection cameras 32, which are uniformly disposed at appropriate positions of a rear bumper of the vehicle. The detection radar 31 and the detection camera 32 respectively detect and acquire signals, and the vehicle controller 6 acquires the detection signals of the detection radar 31 and the detection camera 32 and calculates the driving information of the vehicle. The traveling information of the vehicle includes a vehicle distance between the front and rear vehicles, a vehicle speed of the front vehicle, a vehicle speed of the rear vehicle, and a vehicle speed difference between the front and rear vehicles. The working principle of the detection system is as follows: the detection camera 32 arranged on the rear bumper 1 of the vehicle detects that an obstacle (rear vehicle) exists at the rear end of the vehicle, and sends a signal to the vehicle controller 6; then, after the vehicle controller 6 controls the plurality of detection radars 31 arranged on the rear bumper 1 of the vehicle to respectively transmit electromagnetic wave signals, a receiver on the detection radars 31 acquires feedback time of the electromagnetic wave signals and sends the feedback time to the vehicle controller 6; the vehicle controller 6 can calculate the vehicle speed of the following vehicle and the vehicle distance between the preceding vehicle and the following vehicle. The principle of radar speed measurement is the doppler effect of radar signals, and there is a difference between the frequency of radar signals reflected by a moving object and the transmitting frequency, which is called doppler frequency. The doppler frequency value is proportional to the speed of the object movement: wherein fd = (2 v/C) × f0, fd is doppler frequency, C is light velocity, v is object motion velocity, and f0 is radar transmission velocity. The moving speed of the object to be detected and the distance between the object to be detected and the radar can be calculated by measuring the Doppler frequency value, so that the detection system 3 can easily detect the distance between the rear vehicle or other obstacles and the relative speed between the object to be detected and the rear vehicle or other obstacles.
The vehicle is also provided with a positioning device, and the vehicle positioning device is a conventional vehicle positioning device and can be arranged at any suitable position of the vehicle. In the vehicle anti-collision rear bumper interaction system, the positioning device can be used as an auxiliary device of the detection system 3, the coordinate point of the positioning device is obtained through the vehicle controller 6, and the instantaneous vehicle speed of the vehicle is measured in an auxiliary mode, and the working principle is as follows: for example, the vehicle controller 6 acquires two position points of the positioning device at an interval of ten seconds, and acquires the vehicle speed from V (speed) = S (distance)/T (time). The display system 4 is fixed on the rear fuse 1 by fasteners or other suitable connection means. The display system 4 includes a rear bumper display screen 41 and a light transmissive interactive display area 42. The rear bumper display 41 is typically a light-emitting display that acquires and displays traveling information of the vehicle calculated by the vehicle controller 6. The light-transmitting interactive display area 42 is made of a light-transmitting material, and when the rear bumper display screen 41 does not display (screen state), the color of the light-transmitting interactive display area 42 is consistent with that of the rear bumper 1.
With reference to fig. 1 and fig. 3, in the vehicle anti-collision rear bumper interaction system of the present invention, when the vehicle controller 6 acquires the signal of the detection system 3, the real-time data of the positioning device of the vehicle is acquired in real time, and the vehicle controller 6 guides the acquired signal to the advanced driving assistance system of the vehicle, and then calculates the real-time data of the vehicle distance between the front and rear vehicles of the vehicle, the vehicle speed of the front vehicle, the vehicle speed of the rear vehicle, and the vehicle speed difference between the front and rear vehicles according to the doppler effect formula. The working modes of the vehicle anti-collision rear bumper interaction system comprise a vehicle static mode, a vehicle running mode, an active safety mode and a passive safety mode. In the vehicle static mode, the vehicle anti-collision rear bumper interaction system is in a self-checking state, the vehicle controller 6 acquires signals of the detection system 3 and the positioning device and confirms that the vehicle is in a static state, and the controllers of the controllable air bag assembly 2 and the display system 4 perform system self-checking operation. The self-checking mode is that when the vehicle electric system is in the power-on state, the vehicle controller 6 sends test signals to the controllers of the controllable airbag assembly 2, the detection system 3 and the display system 4, the positioning device and the brake system to detect whether the communication among the components is abnormal or not and keep the working state. In a vehicle running mode, a vehicle anti-collision rear bumper interaction system is in a dynamic monitoring state, a vehicle controller 6 acquires signals of a detection system 3 and a positioning device in real time and calculates that a vehicle is out of a preset safe vehicle distance range, the vehicle controller 6 sends driving information to a display system 4, and a controllable air bag assembly 2 keeps in a silent state. The dynamic monitoring state is a detection mode realized by the vehicle anti-collision rear bumper interaction system through the vehicle controller 6, and the vehicle controller 6 acquires signals on the detection system 3, the display system 4, the positioning device and the brake system in real time, calculates the signals and judges whether each running parameter of the vehicle is beyond a preset passive safety range of the vehicle anti-collision rear bumper interaction system. In the active safety mode, the system enters an early warning state, the vehicle controller 6 acquires that a braking system of the vehicle is triggered, then the vehicle controller 6 acquires signals of the detection system 3 and the positioning device and calculates driving information of the vehicle, the vehicle controller 6 sends the driving information to the display system 4 and controls the controllable air bag assembly 2 to enter the active safety state, and the display system 4 reminds a rear vehicle of the driving information of the vehicle in a warning mode. The active safety state is an early warning state of a vehicle anti-collision rear bumper interaction system, and when the vehicle controller 6 acquires that the brake system is triggered, vehicle operation information can be displayed in a striking manner through a rear bumper display screen 41 of the display system 4. The vehicle can be in a flashing red prompt mode, the vehicle is braked, and information such as the speed of a front vehicle, the speed of a rear vehicle, the distance between the front vehicle and the rear vehicle, the speed difference of the front vehicle and the rear vehicle is displayed. In the passive safety mode, when the vehicle controller 6 detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the vehicle anti-collision rear bumper interaction system enters a safety protection state, the vehicle controller 6 sends a control signal to the controllable airbag controller 23 of the controllable airbag assembly 2, and the controllable airbag controller 23 controls the gas generator 22 to inflate the airbag 21, so that the airbag 21 absorbs kinetic energy generated by rear-end collision. Under the safety protection state, the vehicle anti-collision rear bumper interaction system finds that the distance between front and rear vehicles is within an early warning range through the vehicle controller 6, sends a control signal to the controllable air bag controller 23, and the controllable air bag controller 23 controls the gas generator 22 to inflate the air bag 21, so that the loss caused by collision is reduced.
Referring to fig. 2, the present invention also provides a method for vehicle rear bumper interaction using a vehicle rear bumper interaction system, including: step S1: when the vehicle controller 6 obtains and judges that the vehicle is in a vehicle static mode, the controllable air bag assembly 2 and the display system 4 of the vehicle are detected to be in a normal running state through the vehicle anti-collision rear bumper interaction system, and the controllable air bag assembly 2 and the display system 4 are in a silent state. Step S2: the vehicle controller 6 judges that the vehicle is in a vehicle running mode, the vehicle anti-collision rear bumper interaction system is in a dynamic monitoring state, the vehicle controller 6 obtains and calculates that the distance between the front vehicle and the rear vehicle is out of the range of the safe distance (namely, is larger than the safe distance), and the display system 4 obtains and displays the running information of the vehicle controller 6. And step S3: when the vehicle controller 6 acquires a signal that a braking system of a vehicle is triggered, the vehicle anti-collision rear bumper interaction system enters an early warning state, the vehicle controller 6 judges that the vehicle enters an active safety mode, the display system 4 acquires and displays driving information of the vehicle controller 6, the vehicle controller 6 sends the active safety mode signal to the controllable air bag assembly 2, and the controllable air bag assembly 2 enters the early warning state. And step S4: the vehicle controller 6 detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the vehicle controller 6 sends a passive safety mode signal to the controllable air bag assembly 2, and the controllable air bag assembly 2 enters a safety protection state.
Referring to fig. 5 to 8, in step S1, the vehicle controller 6 determines that the vehicle is in the stationary mode when monitoring that the parameters of the detection radar 31, the detection camera 32 and the positioning device on the detection system 3 are not changed (i.e. the detection signal indicators are all in a stable state). Meanwhile, the display system 4 does not need to acquire driving information calculated by the vehicle anti-collision rear bumper interaction system. The light-transmitting interactive display area 42 on the display system 4 is in the same color as the rear bumper 1 (i.e. there is no obvious color difference mark on the surface of the interactive display area 42, the whole color of the rear bumper 1 can be the same color or customized personalized color along with the vehicle body and the bumper body), and the rear bumper display screen 41 is in a screen-off state. The vehicle rear bumper collision avoidance interaction system generates a monitoring signal to the controllable airbag assembly 2 through the vehicle controller 6, and the controllable airbag controller 23 monitors the airbag 21 so as to maintain a preset air pressure. In step S2, the vehicle controller 6 obtains two coordinate points of the positioning device of the vehicle within a period of time, and calculates the vehicle speed of the vehicle by dividing the distance by the time according to the speed. The vehicle controller 6 acquires the return time of the detection system 3 based on the detection system 3 emitting the electromagnetic wave and acquiring the return time. Calculating vehicle running information according to a Doppler effect formula, and comparing and judging the vehicle running information with a configuration file of a vehicle anti-collision rear bumper interaction system; and if the comparison result of the vehicle is beyond the range of the preset safe vehicle distance, the system judges that the vehicle is in a running mode. In step S3, the vehicle controller 6 obtains a braking signal of the braking system through the data bus, and the vehicle controller 6 obtains a detection signal of the detection system 3 and determines whether the distance between the front and rear vehicles and the speed difference between the front and rear vehicles are within a preset passive safety range. If not, the vehicle rear bumper collision avoidance interaction system enters an active safety mode, the display system 4 acquires and displays driving information in a striking manner, and the controllable air bag controller 23 of the controllable air bag assembly 2 detects whether the air pressure of the air bag 21 is at a preset air pressure. In step S4, in the passive safety mode, the vehicle controller 6 obtains signals of the detection system 3 and the positioning device, and calculates whether the distance between the front and rear vehicles and the speed difference between the front and rear vehicles are within a preset passive safety range. If the vehicle is in the preset passive safety range, the vehicle controller 6 sends a control signal to the controllable airbag controller 23 of the controllable airbag assembly 2, and the controllable airbag controller 23 controls the gas generator 22 to inflate the airbag 21 to the inflated state.
In a preferred embodiment of the present invention, fig. 5 shows a vehicle stationary mode, the detection system 3 obtains detection signals of the detection camera 31 and the detection radar 32 (laser radar and speed radar), and sends the obtained signals and signals of the positioning device to the vehicle controller 6 (computing ECU) for calculating driving information. When the vehicle is in a static state, the vehicle controller 6 generates a self-checking signal for the controllable airbag assembly 2 and the display system 4. The controllable air bag controller 23 on the controllable air bag assembly 2 detects whether the working state of the gas generator 22 and the air bag 21 is normal. The display system 4 also detects whether the communication of the rear bumper display screen 41 is normal. Fig. 6 shows a vehicle driving mode, in which the detection system 3 obtains detection signals of the detection camera 31 and the detection radar 32 (laser radar and speed radar), and sends the obtained signals and signals of the positioning device to the vehicle controller 6 (operation ECU) for calculating driving information. When the vehicle controller 6 calculates that the vehicle distance between the front and rear vehicles is out of the range of 1 meter, the vehicle speed, the rear vehicle speed, and the vehicle distance and the vehicle speed difference between the front and rear vehicles are displayed on the rear bumper display 41 in yellow-white by the rear bumper display 41 (display lamp) and the light-transmitting interactive display area 42 (light-transmitting rear body) of the display system 4. Fig. 7 shows an active safety mode of the vehicle, in which when the vehicle is in a snub or hard brake state, the vehicle controller 6 acquires that the braking system is triggered through a data bus (CAN bus). Then, the vehicle controller 6 obtains detection signals of the detection camera 31, the detection radar 32 (laser radar and speed measurement radar) and the positioning device on the detection system 3, and calculates the current vehicle speed, the rear vehicle speed, the vehicle distance between the front vehicle and the rear vehicle, and the vehicle speed difference between the front vehicle and the rear vehicle. And when the vehicle distance between the front vehicle and the rear vehicle is out of the preset passive safety range, displaying the vehicle speed, the rear vehicle speed, the vehicle distance between the front vehicle and the rear vehicle and the vehicle speed difference by using yellow and white. When the distance between the front vehicle and the rear vehicle is found to be within the preset passive safety range, the rear vehicle is reminded of paying attention to the distance in a red flashing mode, the vehicle controller 6 sends an active safety signal to a controllable air bag controller 23 (a controllable air bag ECU) on the controllable air bag assembly 2, and the controllable air bag controller 23 activates the gas generator 22, so that the air bag 21 is in a 95% air storage state, and the air pressure value is usually 2 MPa. Fig. 8 shows a passive safety mode of the vehicle, when the vehicle controller 6 monitors the detection signals of the detection camera 31, the detection radar 32 (laser radar and speed measuring radar) and the positioning device on the detection system 3, and calculates that the distance between the front and rear vehicles is greater than 1 meter, but the speed difference is less than 10 km/h. The vehicle controller 6 sends a passive safety signal to a controllable airbag controller 23 (controllable airbag ECU) on the controllable airbag assembly 2. The controllable airbag controller 23 controls the gas generator 22 to inflate the gas storage amount of the airbag 21 to a full state (100%), and the gas pressure is usually 2.2 mpa. Finally, energy is absorbed by an air bag 21 arranged in the rear bumper 1, rear-end damage of front and rear vehicles is reduced, and safety of driving passengers is guaranteed.
In conclusion, the invention prompts the following vehicles in different working states of the vehicles in a display screen mode, thereby reducing the accident rate. Meanwhile, a controllable air bag assembly is arranged between the rear bumper of the vehicle and the rear anti-collision beam of the vehicle body, partial kinetic energy is absorbed by an air bag in the moment of collision, and energy absorption is realized by matching with the rear anti-collision beam of the vehicle body, so that accident damage is reduced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A rear bumper collision avoidance interaction system, comprising:
the controllable air bag assembly (2) is arranged inside the rear bumper (1);
a detection system (3) arranged on the rear bumper (1);
a display system (4) provided on the rear bumper (1);
a vehicle controller (6), wherein the vehicle controller (6) is respectively connected with the controllable airbag assembly (2), the detection system (3) and the display system (4), and the detection system (3) sends the detected signals to the vehicle controller (6);
the display system (4) acquires and displays the driving information of the vehicle sent by the vehicle controller (6);
when the vehicle controller (6) judges whether the vehicle has the risk of rear-end collision according to the signal sent by the detection system (3), if so, the vehicle controller (6) controls the display system (4) to warn.
2. A rear bumper collision avoidance interaction system according to claim 1, wherein: the controllable air bag assembly (2) comprises an air bag (21), a gas generator (22) and a controllable air bag controller (23), wherein the gas generator (22) is arranged on the air bag (21) and is connected through a pipeline, and the controllable air bag controller (23) is connected with the gas generator (22), so that the controllable air bag controller (23) receives a control signal of the vehicle controller (6) and controls the gas generator (22) to inflate the air bag (21).
3. A rear bumper collision avoidance interaction system according to claim 2, wherein: the detection system (3) comprises a detection radar (31) and a detection camera (32), the detection radar (31) and the detection camera (32) respectively detect and obtain signals, and the vehicle controller (6) obtains the detection signals of the detection radar (31) and the detection camera (32) and calculates the driving information of the vehicle; the driving information of the vehicles comprises the distance between the front vehicle and the rear vehicle, the speed of the front vehicle, the speed of the rear vehicle and the speed difference of the front vehicle and the rear vehicle; the display system (4) comprises a rear bumper display screen (41) and a light-transmitting interactive display area (42), wherein the rear bumper display screen (41) acquires and displays driving information of the vehicle calculated by the vehicle controller (6); the light-transmitting interactive display area (42) is made of light-transmitting materials, and when the rear bumper display screen (41) does not display, the light-transmitting interactive display area (42) and the rear bumper (1) are kept consistent in color.
4. A rear bumper collision avoidance interaction system according to claim 3, wherein: and when the vehicle controller (6) acquires the signal of the detection system (3), the real-time data of the positioning device of the vehicle is acquired in real time, and the vehicle controller (6) guides the acquired signal into an advanced driving auxiliary system of the vehicle to calculate the real-time data of the distance between the front vehicle and the rear vehicle, the speed of the front vehicle, the speed of the rear vehicle and the speed difference of the front vehicle and the rear vehicle of the vehicle.
5. A rear bumper collision avoidance interaction system according to claim 4, wherein: the working modes of the system comprise a vehicle static mode, a vehicle running mode, an active safety mode and a passive safety mode; in the vehicle static mode, the system is in a self-checking state, the vehicle controller (6) acquires signals of the detection system (3) and the positioning device and confirms that the vehicle is in a static state, and the controller of the controllable air bag assembly (2) and the display system (4) performs system self-checking operation.
6. The rear bumper collision avoidance interaction system of claim 5, wherein: in the vehicle running mode, the system is in a dynamic monitoring state, the vehicle controller (6) acquires signals of the detection system (3) and the positioning device (91) in real time and calculates that the vehicle is out of the preset safe distance range, the vehicle controller (6) sends the running information to the display system (4) for displaying, and the controllable air bag assembly (2) keeps in a silent state; in the active safety mode, the system enters an early warning state, the vehicle controller (6) acquires that a brake system of the vehicle is triggered, then the vehicle controller (6) acquires signals of the detection system (3) and the positioning device and calculates the driving information of the vehicle, the vehicle controller (6) sends the driving information to the display system (4) and controls the controllable air bag assembly (2) to enter the active safety state, and the display system (4) reminds a rear vehicle of the driving information of the vehicle in a warning mode.
7. A rear bumper collision avoidance interaction system according to claim 6, wherein: in the passive safety mode, when the vehicle controller (6) detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the system enters a safety protection state, the vehicle controller (6) sends a control signal to the controllable air bag controller (23) of the controllable air bag assembly (2), the controllable air bag controller (23) controls the gas generator (22) to inflate the air bag (21), and the air bag (21) absorbs kinetic energy generated by rear-end collision.
8. A method for vehicle rear bumper interaction using the rear bumper interaction system of claims 1-7, comprising:
step S1: when a vehicle controller (6) acquires and judges that a vehicle is in a vehicle static mode, the system detects that a controllable air bag assembly (2) and a display system (4) of the vehicle are in a normal running state, and the controllable air bag assembly (2) and the display system (4) are in a silent state;
step S2: the vehicle controller (6) judges that the vehicle is in a vehicle running mode, the system is in a dynamic monitoring state, the vehicle controller (6) obtains and calculates the distance between the front vehicle and the rear vehicle to be larger than the safe distance, and the display system (4) obtains and displays the running information of the vehicle controller (6);
and step S3: when the vehicle controller (6) acquires a signal that a braking system of the vehicle is triggered, the system enters an early warning state, the vehicle controller (6) judges that the vehicle enters an active safety mode, the display system (4) acquires and displays driving information of the vehicle controller (6), the vehicle controller (6) sends the active safety mode signal to the controllable air bag assembly (2), and the controllable air bag assembly (2) enters the early warning state;
and step S4: the vehicle controller (6) detects that the distance between the front vehicle and the rear vehicle and the speed difference between the front vehicle and the rear vehicle are within a preset passive safety range, the vehicle controller (6) sends a passive safety mode signal to the controllable air bag assembly (2), and the controllable air bag assembly (2) enters a safety protection state.
9. The method of post-crash bumper interaction of claim 8, wherein: in the step S1, the vehicle controller (6) monitors that the parameters of the detection system (3) and the positioning device are not changed, that is, it is determined that the vehicle is in a stationary mode, the display system (4) does not acquire the driving information, the color of the light-transmitting interactive display area (42) is consistent with that of the rear bumper (1), and the controllable airbag assembly (2) maintains a preset air pressure; in the step S2, the vehicle controller (6) acquires two coordinate points of a positioning device of the vehicle in a period of time to calculate the speed of the vehicle; the detection system (3) emits electromagnetic waves and obtains return time, the vehicle controller (6) obtains the return time of the detection system (3), calculates vehicle running information according to a Doppler effect formula, and compares the vehicle running information with a configuration file of the system for judgment; and if the comparison result of the vehicle is beyond the range of the preset safe vehicle distance, the system judges that the vehicle is in a running mode.
10. The method of post-crash bumper interaction of claim 9, wherein: in the step S3, the vehicle controller (6) acquires a braking signal of the braking system through a data bus, and the vehicle controller (6) acquires a detection signal of the detection system (3) and determines whether a vehicle distance between the front and rear vehicles and a vehicle speed difference between the front and rear vehicles are within a preset passive safety range; if not, the system enters the active safety mode, the display system (4) acquires and displays the driving information in a striking mode, and a controllable air bag controller (23) of the controllable air bag assembly (2) detects whether the air pressure of an air bag (21) is at preset air pressure; in the step S4, in the passive safety mode, the vehicle controller (6) acquires signals of the detection system (3) and the positioning device, and calculates whether a vehicle distance between the front vehicle and the rear vehicle and a vehicle speed difference between the front vehicle and the rear vehicle are within the preset passive safety range; if yes, the vehicle controller (6) sends a control signal to a controllable air bag controller (23) of the controllable air bag assembly (2), and the controllable air bag controller (23) controls a gas generator (22) to inflate an air bag (21) to a filling state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512839.4A CN115817383A (en) | 2022-11-25 | 2022-11-25 | Anti-collision rear bumper interaction system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512839.4A CN115817383A (en) | 2022-11-25 | 2022-11-25 | Anti-collision rear bumper interaction system and method |
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| Publication Number | Publication Date |
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| CN115817383A true CN115817383A (en) | 2023-03-21 |
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| CN202211512839.4A Pending CN115817383A (en) | 2022-11-25 | 2022-11-25 | Anti-collision rear bumper interaction system and method |
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| Country | Link |
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| CN (1) | CN115817383A (en) |
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- 2022-11-25 CN CN202211512839.4A patent/CN115817383A/en active Pending
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