CN111216666B - Vehicle rear-end collision protection system and protection control method - Google Patents

Vehicle rear-end collision protection system and protection control method Download PDF

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Publication number
CN111216666B
CN111216666B CN202010070109.8A CN202010070109A CN111216666B CN 111216666 B CN111216666 B CN 111216666B CN 202010070109 A CN202010070109 A CN 202010070109A CN 111216666 B CN111216666 B CN 111216666B
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China
Prior art keywords
vehicle
controller
end collision
distance
inflation
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CN111216666A (en
Inventor
潘义勇
魏双秋
蒋冠宇
陈诗意
李�根
龚小林
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Nanjing Forestry University
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Nanjing Forestry University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
    • B60R19/205—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable inflatable in the direction of an obstacle upon impending impact, e.g. using air bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0011—Rear collision or recoiling bounce after frontal collision

Abstract

The invention discloses a vehicle rear-end collision protection system, which comprises a protection unit, a distance monitoring unit and an inflating unit, wherein the protection unit comprises a support component arranged at the tail part of a vehicle and an inflating airbag arranged in the support component, the distance monitoring unit is used for monitoring the distance between the vehicle and a rear vehicle and comprises a radar camera and an ultrasonic transceiver arranged at the tail part of the vehicle, the distance monitoring unit monitors and confirms the relative distance between the rear vehicle and the monitored rear vehicle and sends the relative distance to a controller, the controller analyzes and judges the received image information and the distance information so as to drive the inflating assembly to inflate the inflating airbag, so that the inflating airbag is popped out from the support component and is positioned between the rear-end collision vehicle and the vehicle, the elastic resistance is provided between the rear-end collision vehicle and the vehicle, the rear vehicle is prevented from directly colliding with the running vehicle, the vehicle damage caused by the rear-end collision is effectively reduced, and the safety of a driver and passengers in the vehicle is improved.

Description

Vehicle rear-end collision protection system and protection control method
Technical Field
The invention relates to the technical field of safe driving, in particular to a vehicle rear-end collision protection system and a protection control method.
Background
At present, with the development of the times, more and more families have vehicles belonging to themselves, and the traffic safety is also a serious problem. At present, most vehicles all can install the sensor that is used for monitoring distance between vehicle and the barrier, when monitoring the specific vehicle rear position undersize of monitoring thing, will send out the police dispatch newspaper sound to remind the car owner to avoid colliding with the monitoring thing.
However, these existing systems can be triggered when the vehicle backs up, and when the vehicle is running normally, the vehicle owner cannot be reminded in time or reminded in time, but the vehicle owner cannot be assisted by the active device under the condition that the vehicle owner cannot avoid in time, so that the loss of people and vehicles is reduced.
There are several types of systems known to date for preventing rear-end collisions in vehicles, mainly the following:
1. the vehicle anti-collision system comprises a single chip microcomputer controller, an ultrasonic transceiver, a voice control alarm mechanism, a display mechanism, a brake device and a temperature sensor, wherein the ultrasonic transceiver is used for sending ultrasonic waves and feeding back a returned signal to the single chip microcomputer controller; the temperature sensor is used for detecting the current temperature value; the single chip microcomputer controller is used for calculating the distance between the vehicle and the obstacle, and sending an alarm instruction to the voice control alarm mechanism and a braking instruction to a braking device of the vehicle when the distance is smaller than or equal to a specified distance threshold value; the sound control alarm mechanism is used for receiving an alarm instruction sent by the single chip microcomputer controller and sending an alarm signal; the display mechanism is used for displaying the distance sent by the single chip microcomputer controller, the current temperature inside and outside the vehicle and the current vehicle speed. Although the method can remind the vehicle owner to carry out early warning, the method cannot help the vehicle owner to implement active safety protection in a dangerous state.
2. A collision avoidance system comprising: a radar for detecting an object located behind the vehicle and detecting a distance to the object; a plurality of ultrasonic sensors each for detecting an object and detecting a distance to the object, the plurality of ultrasonic sensors having different detection areas, respectively; a proximity object detection unit that detects a proximity object that is in proximity to a vehicle among the objects; a barrier estimation unit for estimating that there is a barrier that blocks an approach from the rear to the vehicle; and a control unit for performing driving assistance for avoiding a collision with the proximity object when the proximity object is detected, and for limiting or prohibiting the driving assistance from being performed when the distance from the proximity object is greater than a fixed value or greater than a distance from the barrier. The method can also be used for driving the running vehicle to assist braking when the distance between the two vehicles is too small, but the condition that effective protection cannot be carried out under the condition that the vehicle speed is too fast or the braking distance is too short is not considered, and the harm to people and vehicles cannot be reduced under the dangerous working condition.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and title of the application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the prior art.
Therefore, an object of the present invention is to provide a vehicle rear-end collision protection system and a protection control method, which can effectively reduce vehicle damage and improve safety of a driver and passengers in a vehicle when a rear vehicle collides with the rear.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a vehicle rear-end collision protection system, comprising:
the protection unit comprises a support assembly arranged at the tail part of the vehicle and an inflatable air bag arranged in the support assembly;
the distance monitoring unit is used for monitoring the distance between the vehicle and a rear vehicle and comprises a radar camera and an ultrasonic transceiver which are arranged at the tail part of the vehicle; and
the inflation unit is arranged in the vehicle and comprises a controller electrically connected with the distance monitoring unit, an inflation assembly electrically connected with the controller and a first on-off element arranged on an inflation pipeline between the inflation assembly and the inflation airbag;
when the distance between the vehicle and the rear vehicle is smaller than a first danger threshold value set in the controller, the controller drives the first on-off element to be opened, and drives the inflating assembly to inflate into the inflating airbag, so that the inflating airbag is popped out from the supporting assembly.
As a preferable aspect of the vehicle rear-end collision protection system of the present invention, wherein the support assembly includes support tubes symmetrically disposed at the vehicle rear side wall and an airbag housing seat disposed between the two support tubes;
the inflatable airbag is hidden in the airbag accommodating seat, and an inflation pipeline between the inflatable airbag and the inflation assembly is hidden in the support pipe.
As a preferable aspect of the vehicle rear-end collision protection system according to the present invention, the airbag housing seat is divided into a housing seat body and a trim panel clamped to the housing seat body, and when the inflatable airbag is ejected from the housing seat body, the trim panel falls off from the housing seat body.
As a preferable aspect of the vehicle rear-end collision prevention system of the present invention, the inflation assembly includes an electronic inflation device, a high pressure gas storage device communicated with the electronic inflation device through a pipeline, and a second on-off element provided on the pipeline between the electronic inflation device and the high pressure gas storage device;
and when the distance between the vehicle and the rear vehicle is smaller than a second danger threshold value set in the controller, the controller drives the second on-off element to be opened and drives the electronic inflating device to inflate the high-pressure air storage device.
In a preferable aspect of the vehicle rear-end collision protection system according to the present invention, the first on-off element and the second on-off element are solenoid valves.
As a preferable embodiment of the vehicle rear-end collision protection system according to the present invention, the inflation assembly further includes a release valve, which is communicated with the high-pressure gas storage device through a pipeline, and is configured to release gas in the high-pressure gas storage device.
A vehicle rear-end collision protection control method, comprising:
the radar camera collects images of an object close to the rear of the vehicle and transmits the images to the controller, the ultrasonic transceiver collects a distance value between the vehicle and the object close to the rear of the vehicle and transmits the distance value to the controller, and the distance value between the vehicle and the object close to the rear of the vehicle is marked as P;
the controller analyzes and confirms the image information transmitted by the radar camera, and compares the distance value transmitted by the ultrasonic transceiver with a first danger threshold value arranged in the controller, wherein the first danger threshold value arranged in the controller is marked as P 1 ；
When the controller confirms that the image transmitted by the radar camera is a vehicle and P is less than or equal to P 1 When the inflatable airbag is inflated, the controller drives the first on-off element to be opened and drives the inflating assembly to inflate the inflatable airbag.
As a preferable aspect of the vehicle rear-end collision protection control method according to the present invention, the method further includes an inflation preparation step of: setting a second danger threshold value in the controller, and recording the second danger threshold value as P 2 When the controller confirms that the image transmitted by the radar camera is a vehicle and P is less than or equal to P 2 When the air storage device is started, the controller drives the second on-off element to be opened and drives the electronic air charging device to charge air into the high-pressure air storage device, wherein P is 2 Greater than P 1 。
As a preferable aspect of the vehicle rear-end collision protection control method according to the present invention, the method further includes: the electronic air charging device is filled with air into the high-pressure air storage device within 3s, and P is more than P 1 When the gas storage device is in use, the controller drives the gas release valve to open, and the gas in the high-pressure gas storage device is discharged.
Compared with the prior art, the invention has the following beneficial effects: the distance monitoring unit monitors and confirms that the rear vehicle and the relative distance of monitoring rear vehicle send for the controller, carry out analysis and judgment to the image information and the distance information received through the controller, and then drive the inflation subassembly and aerify the gasbag, make the gasbag pop out from the supporting component, be located between the vehicle that the rear collided and this vehicle, for providing elastic resistance between rear end collision vehicle and this vehicle, avoid rear vehicle direct collision to this vehicle direct collision who traveles, the vehicle damage of rear end collision has effectively been reduced, and driver and the interior passenger's of car security has been improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a schematic block diagram of a vehicle rear-end collision protection system according to the present invention;
FIG. 2 is a schematic structural diagram of a protection unit in FIG. 1 of the rear-end collision protection system for a vehicle according to the present invention;
FIG. 3 is a diagram illustrating a first state of a scenario in which a vehicle rear-end collision protection control method according to the present invention is specifically applied;
FIG. 4 is a diagram illustrating a second state of a specific application scenario of the method for controlling rear-end collision of a vehicle according to the present invention;
FIG. 5 is a flowchart illustrating a method for controlling rear-end collision protection according to an embodiment of the present invention;
fig. 6 is a flowchart of another preferred embodiment of a vehicle rear-end collision protection control method according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific details disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
The invention provides a vehicle rear-end collision protection system and a protection control method, which can effectively reduce vehicle damage and improve the safety of a driver and passengers in a vehicle when a rear vehicle collides with the rear.
In order to make the objects, technical solutions and advantages of the vehicle rear-end collision protection system and the vehicle rear-end collision protection control method according to the present invention clearer, embodiments of the vehicle rear-end collision protection system and the vehicle rear-end collision protection control method according to the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic block diagram of an embodiment of a rear-end collision protection system of a vehicle according to the present invention, and referring to fig. 1, a main body of the rear-end collision protection system of the embodiment includes a protection unit 100, a distance monitoring unit 200, and an inflation unit 300.
The protection unit 100 is used for being installed at the tail of a vehicle, and when a rear vehicle knocks to the tail of the vehicle, an elastic obstacle can be formed at the tail of the vehicle and the front end of the rear vehicle, so as to remove the impact force of a part of the rear vehicle and reduce the damage caused by the rear vehicle directly impacting the tail of the vehicle, specifically, the protection unit 100 comprises a support assembly 110 and an inflatable airbag 120, the inflatable airbag 120 is arranged in the support assembly 110, when the rear driving distance is less than a preset first danger threshold value in the inflatable unit 300, the inflatable unit 300 drives the inflatable airbag 120 in the protection unit 100 to pop out from the support assembly 110 and block between the vehicle and the rear vehicle, please refer to fig. 2 together, in the embodiment, the support assembly 110 comprises support tubes 110a symmetrically arranged on the side wall of the tail of the vehicle and an airbag accommodating seat 110b arranged between the two support tubes 110a, the inflatable airbag 120 is hidden in the airbag accommodating seat 110b, and an inflation pipeline communicated between the inflatable airbag 120 and the inflation assembly 320 of the inflation unit 300 is hidden in the support tube 110a, so that the support tube 110a can protect the inflation pipeline and effectively plan the inflation pipeline, the inflation pipeline is prevented from being placed disorderly, the integral tidiness of the vehicle rear-end collision protection system is improved, and preferably, the airbag accommodating seat 110b is divided into a decorative panel 110b-2 formed by clamping and connecting an accommodating seat body 110b-1 and an accommodating seat body 110b-1, and when the inflatable airbag 120 pops out from the accommodating seat body 110b-1, the decorative panel 110b-2 falls off the accommodating seat body 110 b-1.
The distance monitoring unit 200 is used for monitoring the approaching object at the tail of the vehicle and the distance between the vehicle and the approaching object behind, specifically, the distance monitoring unit 200 includes a radar camera 210 and an ultrasonic transceiver 220 which are arranged at the tail of the vehicle, the radar camera 210 collects an image of the approaching object behind and sends the image to the controller 310 on the inflation unit 300, so that the controller 310 to be inflated confirms that the approaching object behind is the vehicle and the distance between the vehicle and the approaching object behind is smaller than a first danger threshold set by the controller 310.
The inflation unit 300, as a control execution unit, is disposed inside the vehicle, and is configured to receive the image and distance information transmitted from the distance monitoring unit 200, analyze and calculate the image and distance information, and inflate the inflatable airbag 120 in the shielding unit 100, and includes a controller 310 electrically connected to the distance monitoring unit 200, an inflatable assembly 320 electrically connected to the controller 310, and a first on-off element 330 disposed in an inflation line between the inflatable assembly 320 and the inflatable airbag 120, wherein when the controller 310 analyzes the image and confirms that the rear object is a vehicle and the distance between the rear vehicle and the vehicle is less than a first danger threshold set in the controller 310, the controller 310 drives the first on-off element 330 to open and drives the inflatable assembly 320 to inflate the inflatable airbag 120, so that the inflatable airbag 120 is ejected from the support assembly 110, a resilient obstacle is formed at a rear end of the vehicle and a front end of the rear vehicle, in this embodiment, the controller 310 further sets a second danger threshold, the inflatable assembly 320 may be driven by the electronic inflator 320a, the high-pressure inflator 320b and the second on-off element 320c, the inflator 320a controls the communication between the rear end of the vehicle and the high-pressure inflator 320a, and the rear inflator 320b, and the high-pressure inflator 320c is set in such a manner that the rear-off the electronic inflator is less than the high-pressure communication of the electronic inflator 320a, and the high-pressure communication control implementation manner that the rear-pressure communication control unit 320a, the electronic inflator 320a is set in the rear-off the electronic inflator 320a, and the rear-high-pressure communication control implementation when the high-pressure communication control implementation mode. The first on-off element 330 and the second on-off element 320c employ solenoid valves.
The operation steps of the vehicle rear-end collision protection system in specific use are specifically and specifically explained in the following vehicle rear-end collision protection control method.
Fig. 3 and 4 respectively show two state schematic diagrams of a specific application scenario of the vehicle rear-end collision protection control method of the present invention, and it should be noted that the vehicle i shown in fig. 3 and 4 refers to a vehicle that is driving or stationary, and the vehicle ii refers to a vehicle that is driving at the tail of the vehicle i and gradually approaches the vehicle i, and in the following description, the vehicle i and the vehicle ii are respectively used for alternative descriptions.
Fig. 5 is a flowchart illustrating steps of an embodiment of a method for protecting a vehicle from rear-end collision according to the present invention, which is described in detail with reference to fig. 3 to 5.
Step 401: the radar camera 210 collects an image of an object near the rear of the vehicle and transmits the image to the controller 310, and the ultrasonic transceiver 220 collects a distance value between the tail end of the vehicle and the object near the rear of the vehicle and transmits the distance value to the controller 310, wherein the distance value between the vehicle and the object near the rear of the vehicle is marked as P.
Step 402: the controller 310 analyzes and confirms the image information transmitted by the radar camera 210, and compares the distance value transmitted by the ultrasonic transceiver 220 with a first danger threshold value set in the controller 310, wherein the first danger threshold value set in the controller 310 is marked as P 1 Since the radar camera 210 collects an image when the approaching object behind the vehicle approaches the vehicle, the controller 310 needs to confirm whether the approaching object behind the vehicle is the vehicle that is traveling, that is, the controller 310 needs to confirm whether the image transmitted by the radar camera 210 is the image directed to the vehicleA vehicle II approaching the first vehicle and confirming whether P is less than or equal to P 1 。
Step 403: when the controller 310 determines that the image transmitted by the radar camera 210 is the second vehicle and P is less than or equal to P 1 When the first on-off element 330 is opened, the controller 310 drives the inflation assembly 320 to inflate the inflatable airbag 120, so that the inflatable airbag 120 is opened and popped out of the support assembly 110, and a barrier is formed at the tail part of the first vehicle and the front end part of the second vehicle.
Fig. 6 is a flowchart illustrating steps of another preferred embodiment of the method for controlling rear-end collision protection of a vehicle according to the present invention, and with reference to fig. 5 and 6, a step H is further provided between step 402 and step 403 of the above embodiment: a second risk threshold, denoted P, is set in controller 310 2 When the controller 310 determines that the image transmitted by the radar camera 210 is a vehicle and P is less than or equal to P 2 At this time, the controller 310 drives the second cut-off element 320c to open, and drives the electronic inflator 320a to inflate the high pressure gas storage device 320b, wherein P is 2 Greater than P 1 In the above embodiment, P is set in the controller 310 1 The value is small, if the speed of the rear-end-collision vehicle II is too fast, the distance P between the rear vehicle II and the vehicle I reaches P 1 During the period when the rear vehicle and the vehicle have rear-end collision, the inflatable module 320 continuously inflates the inflatable airbag 120, which may be in time shortage, that is, the inflatable airbag 120 is not fully inflated, for this purpose, the inflatable module 320 consisting of the electronic inflating device 320a, the high pressure gas storage device 320b and the second opening/closing element 320c may be provided, when the controller 310 determines that the image transmitted by the radar camera 210 is the vehicle, and P is less than or equal to P 2 When the pressure of the gas in the high-pressure gas storage device 320b is higher than the predetermined pressure, the controller 310 drives the second switching element 320c to open and drives the electronic gas charging device 320a to charge gas into the high-pressure gas storage device 320b, and when P is less than or equal to P 1 At this time, the controller 310 drives the first on/off element 330 to open, so that the gas in the high pressure gas storage 320b rapidly enters the inflatable air bag 120, and in the present embodiment, preferably, the electronic inflator 320a fills the high pressure gas storage 320b for 3 seconds, and P > P 1 At this time, the controller 310 drives the release valve 320d to open, and the high-pressure reservoir is filledThe gas in the gas storage device 320b is discharged to avoid the danger caused by long-term storage of gas in the high-pressure gas storage device 320 b.
According to the vehicle rear-end collision protection system and the protection control method, the relative distance between the rear vehicle and the monitored rear vehicle is monitored and confirmed through the distance monitoring unit 200 and is sent to the controller 310, the received image information and the distance information are analyzed and judged through the controller 310, the inflating component 320 is further driven to inflate the inflating airbag 120, the inflating airbag 120 is popped out from the supporting component 110 and is positioned between the rear-end collision vehicle and the vehicle, elastic resistance is provided for the rear-end collision vehicle and the vehicle, direct collision of the rear vehicle from direct collision to the running vehicle is avoided, vehicle damage caused by rear-end collision is effectively reduced, and safety of a driver and passengers in the vehicle is improved.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (7)

1. A vehicle rear-end collision protection system, comprising:
a fender unit (100) comprising a support assembly (110) disposed at a rear portion of a vehicle and an inflatable air bag (120) disposed within the support assembly (110);
the distance monitoring unit (200) is used for monitoring the distance between the tail part of the vehicle and the front end of a rear vehicle and comprises a radar camera (210) and an ultrasonic transceiver (220) which are arranged at the tail part of the vehicle; and
the inflation unit (300) is arranged in the vehicle and comprises a controller (310) electrically connected with the distance monitoring unit (200), an inflation assembly (320) electrically connected with the controller (310) and a first on-off element (330) arranged on an inflation pipeline between the inflation assembly (320) and the inflatable airbag (120);
when the distance between the tail of the vehicle and the front end of a rear vehicle is smaller than a first danger threshold value set in the controller (310), the controller (310) drives the first on-off element (330) to open and drives the inflating assembly (320) to inflate into the inflating airbag (120), so that the inflating airbag (120) is ejected out of the supporting assembly (110);
the inflation assembly (320) comprises an electronic inflation device (320 a), a high-pressure gas storage device (320 b) communicated with the electronic inflation device (320 a) through a pipeline, and a second cut-off element (320 c) arranged on the pipeline between the electronic inflation device (320 a) and the high-pressure gas storage device (320 b);
when the distance between the tail of the vehicle and the front end of the rear vehicle is smaller than a second danger threshold value set in the controller (310), the controller (310) drives the second switching element (320 c) to be opened, and drives the electronic inflation device (320 a) to inflate into the high-pressure air storage device (320 b).
2. A vehicle rear-end collision protection system according to claim 1, wherein the support assembly (110) comprises support tubes (110 a) symmetrically disposed on the vehicle rear side wall and an airbag housing seat (110 b) disposed between the two support tubes (110 a);
the inflatable airbag (120) is hidden in the airbag housing seat (110 b), and an inflation line between the inflatable airbag (120) and the inflation assembly (320) is hidden in the support tube (110 a).
3. A vehicle rear-end collision protection system according to claim 2, wherein the airbag receiving seat (110 b) is divided into a receiving seat body (110 b-1) and a trim panel (110 b-2) clamped with the receiving seat body (110 b-1), and when the inflatable airbag (120) is ejected from the receiving seat body (110 b-1), the trim panel (110 b-2) falls off from the receiving seat body (110 b-1).
4. A vehicle rear-end collision protection system according to claim 1, characterized in that the first on-off element (330) and the second on-off element (320 c) are solenoid valves.
5. The vehicle rear-end collision prevention system as claimed in claim 1, wherein the inflation assembly (320) further comprises a release valve (320 d) communicating with the high pressure gas storage device (320 b) through a pipe for releasing the gas in the high pressure gas storage device (320 b).
6. A vehicle rear-end collision protection control method for a vehicle rear-end collision protection system according to claim 1, characterized by comprising:
the radar camera (210) collects images of an object close to the rear of the vehicle and transmits the images to the controller (310), the ultrasonic transceiver (220) collects a distance value between the tail end of the vehicle and the object close to the rear of the vehicle and transmits the distance value to the controller (310), and the distance value between the vehicle and the object close to the rear of the vehicle is recorded as P;
the controller (310) analyzes and confirms the image information transmitted by the radar camera (210), and compares the distance value transmitted by the ultrasonic transceiver (220) with a first danger threshold value arranged in the controller (310), wherein the first danger threshold value arranged in the controller (310) is marked as P 1 ；
When the controller (310) confirms that the image transmitted by the radar camera (210) is a vehicle and P is less than or equal to P 1 When the inflatable airbag is inflated, the controller (310) drives the first on-off element (330) to be opened and drives the inflating assembly (320) to inflate the inflatable airbag (120);
also comprises an inflation preparation step: a second danger threshold is set in the controller (310) and is marked as P 2 When the controller (310) confirms that the image transmitted by the radar camera (210) is a vehicle and P is less than or equal to P 2 When the air pressure is high, the controller (310) drives the second on-off element (320 c) to be opened and drives the electronic air charging device (320 a) to be arranged in the high-pressure air storage device (320 b)Is aerated, wherein, P 2 Greater than P 1 。
7. The vehicle rear-end collision protection control method according to claim 6, characterized by further comprising the steps of: within 3s after the electronic inflator (320 a) is filled with air into the high pressure air storage device (320 b), and P is more than P 1 When the gas is exhausted, the controller (310) drives the gas release valve (320 d) to be opened, and the gas in the high-pressure gas storage device (320 b) is exhausted.
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