CN111347992B - Intelligent anti-collision energy absorption system and method for automobile - Google Patents

Intelligent anti-collision energy absorption system and method for automobile Download PDF

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Publication number
CN111347992B
CN111347992B CN202010237239.6A CN202010237239A CN111347992B CN 111347992 B CN111347992 B CN 111347992B CN 202010237239 A CN202010237239 A CN 202010237239A CN 111347992 B CN111347992 B CN 111347992B
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China
Prior art keywords
unit
absorbing
buffering energy
energy
vehicle body
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CN111347992A (en
Inventor
刘成
刘都
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Southwest University of Science and Technology
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Southwest University of Science and Technology
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
    • B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
    • 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
    • B60R19/023—Details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R19/36—Combinations of yieldable mounting means of different types
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/38—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles
    • B60R19/40—Arrangements for mounting bumpers on vehicles adjustably or movably mounted, e.g. horizontally displaceable for securing a space between parked vehicles in the direction of an obstacle before a collision, or extending during driving of the vehicle, i.e. to increase the energy absorption capacity of the bumper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • 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
    • B60R2019/026—Buffers, i.e. bumpers of limited extent

Abstract

The invention discloses an intelligent anti-collision energy-absorbing system and an anti-collision energy-absorbing method for an automobile, wherein the structure of the anti-collision energy-absorbing system comprises an automobile body; the front buffering energy-absorbing unit is arranged at the front end of the vehicle body; the rear buffering energy-absorbing unit is arranged at the rear end of the vehicle body; the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit are connected with the control unit; the sound and light alarm unit is arranged on the vehicle body and is connected with the control unit; the front radar detection unit is arranged on the front buffering energy absorption unit; the rear radar detection unit is arranged on the rear buffering energy absorption unit; the data processing unit is arranged on the vehicle body and is connected with the front radar detection unit and the rear radar detection unit; and the control unit is arranged on the vehicle body and is connected with the data processing unit. The invention can work in a manual and automatic mode, absorbs the collision energy at the front and the rear of the automobile in an accident state, plays a better protection role for the automobile and personnel, and improves the passive safety of the automobile.

Description

Intelligent anti-collision energy absorption system and method for automobile
Technical Field
The invention belongs to the technical field of automobile safety, and particularly relates to an intelligent anti-collision energy-absorbing system and an anti-collision energy-absorbing method for an automobile.
Background
The automobile becomes an important vehicle in modern life, and the injury caused by traffic accidents is more and more serious while great convenience is brought to people for going out. The great energy released at the moment of high-speed collision of the vehicle damages the vehicle and damages drivers and passengers. When a vehicle collision occurs, the structural deformation of the automobile body is mainly relied on at present to absorb the collision energy. The absorption of crash energy in this manner is limited due to the limited size of the space, and it is difficult to ensure the safety of the vehicle and the occupants in an accident, particularly at high speeds. When a collision accident happens, the telescopic buffering energy-absorbing structure is pushed out, the limit of the space size of an automobile can be broken through, collision energy is absorbed by virtue of compression of a buffering material, and the telescopic buffering energy-absorbing structure can be superposed with a structural deformation energy-absorbing mode for use, so that the safety of vehicles and personnel can be greatly improved. The existing energy absorption structure of the buffer material is only limited to the protection of the front part of an automobile, a multi-automobile chain accident occurs on a highway, the destructive power is very large, and collision energy comes from the front and the rear parts, so that the front and the rear parts of the automobile have energy absorption requirements in an accident state. And the existing telescopic buffering energy absorption device adopts a simple control mode, and the anti-collision function of the buffering energy absorption device is weakened in an accident state.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an intelligent anti-collision energy absorption system for an automobile, including:
a vehicle body;
the front buffering energy-absorbing unit is arranged at the front end of the vehicle body; the rear buffering energy-absorbing unit is arranged at the rear end of the vehicle body; the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit are connected with the control unit through cables; the sound and light alarm unit is arranged on the vehicle body and is connected with the control unit through a cable; the front radar detection unit is arranged on the front buffering energy absorption unit; the rear radar detection unit is arranged on the rear buffering energy absorption unit; the data processing unit is arranged on the vehicle body and is connected with the front radar detection unit and the rear radar detection unit through cables; the control unit is arranged on the vehicle body and is connected with the data processing unit through a cable;
the anti-collision energy-absorbing method comprises the following steps:
step one, the front radar detection unit and the rear radar detection unit detect in real time in a millimeter wave or nano wave mode to obtain the relative speed of the vehicle body and the front obstacle
Figure GDA0003073274480000021
Minimum distance to preceding obstacle
Figure GDA0003073274480000022
Relative speed with rear obstacle
Figure GDA0003073274480000023
Minimum distance to rear obstacle
Figure GDA0003073274480000024
The detection data are transmitted to the data processing unit in real time;
step two, the data processing unit receives the detection data of the front radar detection unit and the rear radar detection unit in real time and calculates
Figure GDA0003073274480000025
And
Figure GDA0003073274480000026
and
Figure GDA0003073274480000027
and will be
Figure GDA0003073274480000028
And
Figure GDA0003073274480000029
are respectively connected with
Figure GDA00030732744800000210
Comparing, wherein delta t represents the time required by the complete push of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit, L represents the length of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit when the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit are completely pushed, k represents the alarm allowance, and k is more than or equal to 1,
Figure GDA00030732744800000211
show the front buffer energy absorption unit starts the newspaperThe minimum distance between the vehicle body and the front obstacle when in alarm,
Figure GDA00030732744800000212
the minimum distance between the vehicle body and a rear obstacle when the rear buffering energy absorption unit starts alarming is shown, namely
Figure GDA00030732744800000213
And
Figure GDA00030732744800000214
indicating an alarm limit;
step three, according to
Figure GDA00030732744800000215
And
Figure GDA00030732744800000216
and
Figure GDA00030732744800000217
are respectively connected with
Figure GDA00030732744800000218
The comparison result shows that the intelligent anti-collision energy-absorbing system of the automobile has the following six working states:
if it is satisfied with
Figure GDA00030732744800000219
The control unit starts the sound and light alarm unit to send out front obstacle alarm information; judging whether the vehicle is in a dangerous state or not by the driver, and if not, releasing the alarm; if the driver judges that the vehicle is in a dangerous state, manually controlling to push out the front buffering energy-absorbing unit in advance or not interfering in the push out of the front buffering energy-absorbing unit;
if it is satisfied with
Figure GDA00030732744800000220
The control unit starts the front buffering energy absorption unit to push out and gives an alarm through the sound-light alarm unit, and a driver judges whether the vehicle is in a dangerous stateIf the front buffer energy absorption unit is not in a dangerous state, the alarm is released, and the pushing-out of the front buffer energy absorption unit is interrupted; if the driver judges that the automobile is in a dangerous state, the front buffering energy-absorbing unit is pushed out manually or the pushing-out of the front buffering energy-absorbing unit is not interfered;
if it is satisfied with
Figure GDA0003073274480000031
The control unit starts the sound and light alarm unit to send out a rear obstacle alarm signal, a driver judges whether the vehicle is in a dangerous state, and if the vehicle is not in the dangerous state, the alarm is released; if the driver judges that the vehicle is in a dangerous state, manually controlling to push out the rear buffering energy-absorbing unit in advance or not intervening in the pushing out of the rear buffering energy-absorbing unit;
if it is satisfied with
Figure GDA0003073274480000032
The control unit starts the rear buffering energy absorption unit to push out and gives an alarm through the sound-light alarm unit, a driver judges whether the vehicle is in a dangerous state, if not, the alarm is released, and meanwhile, the pushing out of the rear buffering energy absorption unit is interrupted; if the driver judges that the automobile is in a dangerous state, the rear buffering energy-absorbing unit is pushed out manually or the pushing-out of the rear buffering energy-absorbing unit is not interfered;
if it is satisfied with
Figure GDA0003073274480000033
The control unit sends a front resetting instruction, the pushed front buffering energy-absorbing unit retracts into the vehicle body to complete resetting, and a driver can send the resetting instruction of the front buffering energy-absorbing unit in any state;
if it is satisfied with
Figure GDA0003073274480000034
The control unit sends a rear resetting instruction, the pushed rear buffering energy-absorbing unit retracts into the vehicle body to complete resetting, and a driver can send the rear buffering energy-absorbing unit resetting instruction in any state.
Preferably, the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit have the same structure; the structure of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit comprises:
rod cylinders installed at front and rear ends of the vehicle body; a piston rod disposed in the rod cylinder;
a rear cross member mounted at the front and rear ends of the vehicle body; the rodless cylinder is arranged on the rear cross beam, and a piston and a sliding block connected with the piston are arranged in the rodless cylinder; the tail end of the shock absorber is rotationally connected with the sliding block;
the front cross beam is fixedly arranged at the end part of the piston rod and is rotatably connected with the front end of the shock absorber, and the front radar detection unit and the rear radar detection unit are arranged on the front cross beam.
Preferably, the front cross beam is provided in an arc structure.
Preferably, at least two rodless cylinders are provided for the front and rear energy-absorbing cushion units.
Preferably, the shock absorber is a hydraulic spring compound shock absorber.
Preferably, the alarm margin k is more than or equal to 1, namely an alarm limit value
Figure GDA0003073274480000035
Figure GDA0003073274480000041
And alarm limit
Figure GDA0003073274480000042
The alarm limit value set by the method can ensure that the vehicle body and personnel are in a safe state.
The invention at least comprises the following beneficial effects: the invention designs an intelligent energy-absorbing and anti-collision system for an automobile, which can work in a manual or automatic mode, absorb collision energy from the front and the rear of the automobile in an accident state, play a better role in protecting the automobile and personnel and improve the passive safety of the automobile.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of an intelligent anti-collision energy-absorbing system for an automobile according to the present invention;
FIG. 2 is a schematic view of the working principle of the intelligent anti-collision energy-absorbing system for the automobile provided by the invention;
FIG. 3 is a schematic diagram showing the push-out states of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit of the intelligent anti-collision energy-absorbing system for the automobile provided by the invention;
FIG. 4 is a schematic diagram of the reset states of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit of the intelligent anti-collision energy-absorbing system for the automobile provided by the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-4: the invention discloses an intelligent anti-collision energy-absorbing system for an automobile, which comprises:
a vehicle body 8;
a front cushion energy absorption unit 6 mounted at the front end of the vehicle body 8; a rear cushion energy absorption unit 7 mounted at the rear end of the vehicle body 8; the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 are connected with the control unit 4 through cables; the sound and light alarm unit 5 is arranged on the vehicle body 8 and is connected with the control unit 4 through a cable; a front radar detection unit 1 mounted on the front buffer energy absorption unit 6; a rear radar detection unit 2 mounted on the rear buffering energy absorption unit 7; a data processing unit 3 mounted on the vehicle body 8 and connected to the front radar detection unit 1 and the rear radar detection unit 2 via a cable; and a control unit 4 mounted on the vehicle body 8 and connected to the data processing unit 3 via a cable.
The working principle is as follows: the front radar detection unit 1 and the rear radar detection unit 2 are used for detecting the relative speed of the vehicle body 8 and the front and rear obstacles
Figure GDA0003073274480000051
Minimum distance to front and rear obstacles
Figure GDA0003073274480000052
The detection data are transmitted to the data processing unit 3 in real time, and the data processing unit 3 receives the detection data of the front radar detection unit 1 and the rear radar detection unit 2 in real time; the data processing unit 3 calculates by receiving the obtained data
Figure GDA0003073274480000053
And
Figure GDA0003073274480000054
and
Figure GDA0003073274480000055
and respectively comparing the calculation results with
Figure GDA0003073274480000056
Comparing; the control unit 4 is used for controlling the sound and light alarm unit 5 to alarm and simultaneously according to the alarm
Figure GDA0003073274480000057
And
Figure GDA0003073274480000058
and
Figure GDA0003073274480000059
and
Figure GDA00030732744800000510
controlling the push-out of the front buffer energy-absorbing unit 6 and the rear buffer energy-absorbing unit 7 according to the comparison result; namely when
Figure GDA00030732744800000511
When the vehicle runs, the control unit 4 starts the sound and light alarm unit 5 to send out a front obstacle signal; when in use
Figure GDA00030732744800000512
The control unit 4 starts the front buffering energy absorption unit 6 to push out and gives an alarm through the sound-light alarm unit 5; when in use
Figure GDA00030732744800000513
The control unit 4 starts the sound and light alarm unit 5 to send out a rear obstacle alarm signal; when in use
Figure GDA00030732744800000514
The control unit 4 starts the rear buffering energy absorption unit 7 to push out and gives an alarm through the sound-light alarm unit 5; when in use
Figure GDA00030732744800000515
Figure GDA00030732744800000516
The control unit 4 sends a front reset instruction, and the pushed front buffering energy absorption unit 6 retracts into the vehicle body to complete reset; when in use
Figure GDA00030732744800000517
The control unit 4 sends a rear reset instruction, and the pushed rear buffering energy absorption 7 unit retracts into the vehicle body to complete reset; in the whole process, a driver can manually control whether the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 are pushed out or not.
The anti-collision energy absorption method comprises the following steps:
step one, the front radar detection unit 1 and the rear radar detection unit 2 perform real-time detection in a millimeter wave or nano wave mode to obtain the relative speed of the vehicle body 8 and the front obstacle
Figure GDA00030732744800000518
Most distant from the preceding obstacleSmall distance
Figure GDA00030732744800000519
Relative speed with rear obstacle
Figure GDA00030732744800000520
Minimum distance to rear obstacle
Figure GDA00030732744800000521
And transmits the detected data to the data processing unit 3 in real time;
step two, the data processing unit 3 receives the detection data of the front radar detection unit 1 and the rear radar detection unit 2 in real time and calculates
Figure GDA00030732744800000522
And
Figure GDA00030732744800000523
and
Figure GDA00030732744800000524
and will be
Figure GDA00030732744800000525
And
Figure GDA00030732744800000526
are respectively connected with
Figure GDA00030732744800000527
Comparing, wherein delta t represents the time required by the complete push-out of the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7, L represents the length of the complete push-out of the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7, k represents the alarm allowance, and k is more than or equal to 1,
Figure GDA0003073274480000061
the minimum distance between the vehicle body 8 and the front obstacle when the front buffer energy absorption unit 6 starts alarming is shown,
Figure GDA0003073274480000062
indicates the minimum distance between the vehicle body 8 and a rear obstacle when the rear buffering energy-absorbing unit 7 starts alarming, namely
Figure GDA0003073274480000063
And
Figure GDA0003073274480000064
indicating an alarm limit;
step three, six working states of the intelligent anti-collision energy-absorbing system of the automobile shown in the table 1:
if it is satisfied with
Figure GDA0003073274480000065
The control unit 4 starts the sound and light alarm unit 5 to send out front obstacle alarm information; judging whether the vehicle is in a dangerous state or not by the driver, and if not, releasing the alarm; if the driver judges that the vehicle is in a dangerous state, manually controlling to push out the front buffering energy-absorbing unit 6 in advance or not interfering in the push out of the front buffering energy-absorbing unit 6;
if it is satisfied with
Figure GDA0003073274480000066
The control unit 4 starts the front buffering energy absorption unit 6 to push out and gives an alarm through the sound-light alarm unit 5, a driver judges whether the vehicle is in a dangerous state, if the vehicle is not in the dangerous state, the alarm is released, and the pushing out of the front buffering energy absorption unit 6 is interrupted; if the driver judges that the automobile is in a dangerous state, the front buffering energy-absorbing unit 6 is pushed out manually or the pushing-out of the front buffering energy-absorbing unit 6 is not interfered;
if it is satisfied with
Figure GDA0003073274480000067
The control unit 4 starts the sound and light alarm unit 5 to send out a rear obstacle alarm signal, a driver judges whether the vehicle is in a dangerous state, and if the vehicle is not in the dangerous state, the alarm is released; if the driver judges that the vehicle is in a dangerous state, the rear buffering energy absorption sheet is pushed out in advance through manual controlThe element 7 does not interfere with the push-out of the rear buffering energy-absorbing unit 7;
if it is satisfied with
Figure GDA0003073274480000068
The control unit 4 starts the rear buffering energy absorption unit 7 to push out and gives an alarm through the sound-light alarm unit 5, a driver judges whether the vehicle is in a dangerous state, if the vehicle is not in the dangerous state, the alarm is released, and meanwhile, the pushing out of the rear buffering energy absorption unit 7 is interrupted; if the driver judges that the automobile is in a dangerous state, the rear buffering energy-absorbing unit 7 is pushed out manually or the pushing-out of the rear buffering energy-absorbing unit 7 is not interfered;
if it is satisfied with
Figure GDA0003073274480000069
The control unit 4 sends a front reset instruction, the pushed front buffering energy-absorbing unit 6 retracts into the vehicle body to complete reset, and a driver can send a reset instruction of the front buffering energy-absorbing unit 6 in any state;
if it is satisfied with
Figure GDA00030732744800000610
The control unit 4 sends a rear reset instruction, the pushed-out rear buffering energy-absorbing unit 7 retracts into the vehicle body to complete reset, and a driver can send the reset instruction of the rear buffering energy-absorbing unit 7 in any state.
TABLE 1 functional table of each unit of intelligent anti-collision energy-absorbing system of automobile under six working states
Figure GDA0003073274480000071
In the technical scheme, the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 have the same structure; the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 structurally comprise:
rod cylinders 65 mounted at the front and rear ends of the vehicle body 8; a piston rod 651 disposed in the rod cylinder 65;
rear cross members 63 mounted to the front and rear ends of the vehicle body 8; a rodless cylinder 64 mounted on the rear cross member 63, the rodless cylinder having a piston 642 disposed therein; a slider 641 fixedly connected to the piston 642; a damper 62 having a distal end rotatably connected to the slider 641;
a front beam 61 fixedly disposed at an end of the piston rod 651 and rotatably connected to a front end of the damper 62; the front radar detection unit 1 and the rear radar detection unit 2 are mounted on the front cross member 61.
Before the vehicle body 8 collides with an obstacle, the control unit 4 controls the rod cylinder 65 and the rodless cylinder 64 to be started, so that the piston rod 651 and the shock absorber 62 quickly push out the front cross beam 61, and the front cross beam 61 is a direct force-bearing surface for collision; the operation of the piston rod 651 simultaneously pushes out the shock absorber 62 connected to the piston rod 651, the front cross beam 61 transmits collision energy to the shock absorber 62, the rodless cylinder 64 and the rod-containing cylinder 65, and the shock absorber 62 and the piston rod 651 form a claw-shaped structure, so that the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 can effectively absorb forward and backward collision energy and non-forward collision energy of a vehicle body, when the piston 642 collides, the shock absorber 62 pushes the piston 642 to move left and right in the rodless cylinder 64, the piston 642 compresses gas in the rodless cylinder 64 to do work and absorb collision energy, and the arrangement not only can buffer and absorb the collision energy in the forward direction by the oil rod cylinder, but also can buffer and absorb energy generated by collision to two sides of the vehicle body 8 by compressing the gas in the rodless cylinder 64 through the piston 642, thereby improving the collision-proof effect of the intelligent collision-proof energy.
In the above technical solution, the front cross member 61 is configured to be an arc structure, and this configuration enables the vehicle body 8 to avoid side collision and protects the vehicle body 8 in the side direction.
In the above technical solution, at least two rodless cylinders 64 are provided for the front and rear cushion energy-absorbing units 6 and 7.
In the above technical solution, the shock absorber 62 is a hydraulic spring composite shock absorber, and the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 adopt a composite shock-absorbing structure of air pressure, hydraulic pressure and spring, so that the shock absorber 62, the rod cylinder 65 and the rodless cylinder 64 absorb collision energy together when colliding, and the buffering energy-absorbing effects of the front buffering energy-absorbing unit 6 and the rear buffering energy-absorbing unit 7 are improved.
In the technical scheme, the alarm allowance k is more than or equal to 1, namely an alarm limit value is provided
Figure GDA0003073274480000081
Figure GDA0003073274480000082
And alarm limit
Figure GDA0003073274480000083
This set alarm limit enables the vehicle body 8 and personnel to be in a safe state.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (6)

1. The anti-collision energy-absorbing method based on the intelligent anti-collision energy-absorbing system of the automobile is characterized in that the structure of the intelligent anti-collision energy-absorbing system of the automobile comprises the following steps:
a vehicle body;
the front buffering energy-absorbing unit is arranged at the front end of the vehicle body; the rear buffering energy-absorbing unit is arranged at the rear end of the vehicle body; the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit are connected with the control unit through cables; the sound and light alarm unit is arranged on the vehicle body and is connected with the control unit through a cable; the front radar detection unit is arranged on the front buffering energy absorption unit; the rear radar detection unit is arranged on the rear buffering energy absorption unit; the data processing unit is arranged on the vehicle body and is connected with the front radar detection unit and the rear radar detection unit through cables; the control unit is arranged on the vehicle body and is connected with the data processing unit through a cable;
the anti-collision energy-absorbing method comprises the following steps:
step one, the front radar detection unit and the rear radar detection unit detect in real time in a millimeter wave or nano wave mode to obtain the relative speed of the vehicle body and the front obstacle
Figure FDA0003073274470000011
Minimum distance to preceding obstacle
Figure FDA0003073274470000012
Relative speed with rear obstacle
Figure FDA0003073274470000013
Minimum distance to rear obstacle
Figure FDA0003073274470000014
The detection data are transmitted to the data processing unit in real time;
step two, the data processing unit receives the detection data of the front radar detection unit and the rear radar detection unit in real time and calculates
Figure FDA0003073274470000015
And
Figure FDA0003073274470000016
Figure FDA0003073274470000017
and
Figure FDA0003073274470000018
and will be
Figure FDA0003073274470000019
And
Figure FDA00030732744700000110
are respectively connected with
Figure FDA00030732744700000111
Comparing, wherein delta t represents the time required by the complete push of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit, L represents the length of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit when the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit are completely pushed, k represents the alarm allowance, and k is more than or equal to 1,
Figure FDA00030732744700000112
the minimum distance between the vehicle body and the front obstacle when the front buffering energy absorption unit starts alarming is shown,
Figure FDA00030732744700000113
the minimum distance between the vehicle body and a rear obstacle when the rear buffering energy absorption unit starts alarming is shown, namely
Figure FDA00030732744700000114
And
Figure FDA00030732744700000115
indicating an alarm limit;
step three, according to
Figure FDA00030732744700000116
And
Figure FDA00030732744700000117
Figure FDA00030732744700000118
and
Figure FDA00030732744700000119
are respectively connected with
Figure FDA00030732744700000120
The comparison result shows that the intelligent anti-collision energy-absorbing system of the automobile has the following six working states:
if it is satisfied with
Figure FDA00030732744700000121
The control unit starts the sound and light alarm unit to send out front obstacle alarm information; judging whether the vehicle is in a dangerous state or not by the driver, and if not, releasing the alarm; if the driver judges that the vehicle is in a dangerous state, manually controlling to push out the front buffering energy-absorbing unit in advance or not interfering in the push out of the front buffering energy-absorbing unit;
if it is satisfied with
Figure FDA0003073274470000021
The control unit starts the front buffering energy absorption unit to push out and gives an alarm through the sound-light alarm unit, a driver judges whether the vehicle is in a dangerous state, if not, the alarm is released, and the pushing out of the front buffering energy absorption unit is interrupted; if the driver judges that the automobile is in a dangerous state, the front buffering energy-absorbing unit is pushed out manually or the pushing-out of the front buffering energy-absorbing unit is not interfered;
if it is satisfied with
Figure FDA0003073274470000022
The control unit starts the sound and light alarm unit to send out a rear obstacle alarm signal, a driver judges whether the vehicle is in a dangerous state, and if the vehicle is not in the dangerous state, the alarm is released; if the driver judges that the vehicle is in a dangerous state, manually controlling to push out the rear buffering energy-absorbing unit in advance or not intervening in the pushing out of the rear buffering energy-absorbing unit;
if it is satisfied with
Figure FDA0003073274470000023
The control unit starts the rear buffering energy absorption unit to push out and gives an alarm through the sound-light alarm unit, a driver judges whether the vehicle is in a dangerous state, if not, the alarm is released, and meanwhile, the pushing out of the rear buffering energy absorption unit is interrupted; if the driver judges that the automobile is in a dangerous state, the rear buffering energy-absorbing unit is pushed out manually or the pushing-out of the rear buffering energy-absorbing unit is not interfered;
if it is satisfied with
Figure FDA0003073274470000024
The control unit sends a front resetting instruction, the pushed front buffering energy-absorbing unit retracts into the vehicle body to complete resetting, and a driver can send the resetting instruction of the front buffering energy-absorbing unit in any state;
if it is satisfied with
Figure FDA0003073274470000025
The control unit sends a rear resetting instruction, the pushed rear buffering energy-absorbing unit retracts into the vehicle body to complete resetting, and a driver can send the rear buffering energy-absorbing unit resetting instruction in any state.
2. The intelligent anti-collision energy-absorbing system based on the automobile as claimed in claim 1, wherein the front buffer energy-absorbing unit and the rear buffer energy-absorbing unit have the same structure; the structure of the front buffering energy-absorbing unit and the rear buffering energy-absorbing unit comprises:
rod cylinders installed at front and rear ends of the vehicle body; a piston rod disposed in the rod cylinder;
a rear cross member mounted at the front and rear ends of the vehicle body; the rodless cylinder is arranged on the rear cross beam, and a piston and a sliding block connected with the piston are arranged in the rodless cylinder; the tail end of the shock absorber is rotationally connected with the sliding block;
the front cross beam is fixedly arranged at the end part of the piston rod and is rotatably connected with the front end of the shock absorber, and the front radar detection unit and the rear radar detection unit are arranged on the front cross beam.
3. The intelligent anti-collision energy-absorbing system based on the automobile as claimed in claim 2, wherein the front cross beam is arranged in an arc structure.
4. The intelligent anti-collision energy-absorbing system based on the automobile as claimed in claim 2, wherein at least two rodless cylinders are provided for the front and rear energy-absorbing units.
5. A collision and energy absorption method based on an intelligent collision and energy absorption system of an automobile according to claim 2, wherein the shock absorber is arranged as a hydraulic spring composite shock absorber.
6. An anti-collision energy-absorbing method based on an intelligent anti-collision energy-absorbing system of an automobile according to claim 2, characterized in that the alarm margin k is more than or equal to 1, namely, an alarm limit value is provided
Figure FDA0003073274470000031
And alarm limit
Figure FDA0003073274470000032
The alarm limit value set by the method can ensure that the vehicle body and personnel are in a safe state.
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