CN115195658B - Active crumple system, method, vehicle and storage medium - Google Patents
Active crumple system, method, vehicle and storage medium Download PDFInfo
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- CN115195658B CN115195658B CN202210826628.1A CN202210826628A CN115195658B CN 115195658 B CN115195658 B CN 115195658B CN 202210826628 A CN202210826628 A CN 202210826628A CN 115195658 B CN115195658 B CN 115195658B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/346—Protecting non-occupants of a vehicle, e.g. pedestrians means outside vehicle body
Abstract
The invention discloses an active crumple system, an active crumple method, a vehicle and a storage medium. The system comprises: the device comprises an energy absorption piece, a connecting piece, a sealing strip, a pressure sensor and a pneumatic piece; the connecting piece comprises a compression block and a supporting block which are connected with each other in the length direction and form a preset angle; the energy absorbing piece is connected with the compression block; the pressure sensor is arranged in the rubber sleeve of the sealing strip and has the same length as the sealing strip; the sealing strip is arranged at the upper part of the supporting block far away from the compression block; the pneumatic element is connected with the lower part of the supporting block, which is close to the compression block, and the pneumatic element is switched between the rigid support and the flexible support based on the sensing data of the pressure sensor. The method comprises the following steps: when the control device detects that the sensing value of the pressure sensor in the sealing strip at the first position is larger than a preset warning value, the pneumatic piece is controlled to descend, the connecting piece is driven to descend, and the compression block of the connecting piece compresses the energy absorbing piece. Actively crumple to absorb impact energy to protect pedestrians.
Description
Technical Field
The invention relates to the field of automobile collision, in particular to an active crumple system, an active crumple method, a vehicle and a storage medium.
Background
At present, with the high-speed development of automobiles, people pay more and more attention to pedestrian protection. The structure of air chamber apron in the present market is rigid connection, and rigidity is all stronger, and when people's head took place to strike with the cabin lid, the head contacted rigid structure easily, and the impact can't be diluted and weaken, consequently can't weaken the injury value to the pedestrian, influences life safety even.
Disclosure of Invention
The invention mainly aims to provide an active crumple system, an active crumple method, a vehicle and a storage medium, and aims to solve the technical problem that collision damage is easily caused to the head of a pedestrian when the vehicle collides with the pedestrian.
In order to achieve the above object, the present invention provides an active crush system comprising an energy absorber, a connecting member, a sealing strip, a pressure sensor and a pneumatic member;
the connecting piece comprises a compression block and a supporting block which are connected with each other in the length direction and form a preset angle;
the energy absorbing piece is connected with the compression block;
the pressure sensor is arranged in the rubber sleeve of the sealing strip and has the same length as the sealing strip;
the sealing strip is arranged at the upper part of the supporting block far away from the compression block;
the pneumatic piece is connected with the lower part of the supporting block, which is close to the compression block, and the pneumatic piece is switched between the rigid support of the pneumatic piece and the flexible support of the energy absorbing piece based on the sensing data of the pressure sensor.
Optionally, the active crush system further comprises an air chamber cover plate and a control device;
the energy absorbing piece is arranged between the air chamber cover plate and the external cabin cover;
the control device is electrically connected with the pressure sensor and the pneumatic piece.
Optionally, if the active crush system includes a pneumatic element, the pneumatic element is disposed at a predetermined point on a central axis of symmetry of the outboard canopy.
Optionally, if the active crush system includes a plurality of pneumatic elements, the plurality of pneumatic elements are symmetrically arranged according to a central axis of symmetry of the external canopy.
To achieve the above object, the present invention provides an active crush method applied to an active crush system as described above, including:
when the control device detects that the sensing value of the pressure sensor in the sealing strip at the first position is larger than a preset warning value, the pneumatic piece is controlled to descend, the connecting piece is driven to descend, and the compression block of the connecting piece compresses the energy absorbing piece.
Optionally, the active collapsing method further comprises:
the connecting piece is driven to descend, the compression block of the connecting piece compresses the energy absorbing piece, and the supporting block of the connecting piece drives the sealing strip to descend to a second position;
when the control device detects that the sensing value of the pressure sensor in the sealing strip at the second position is smaller than a preset safety value, the pneumatic piece is controlled to rise, the connecting piece is driven to rise, and the sealing strip is restored to the first position.
Optionally, the active collapsing method further comprises:
and determining an effective collision area most likely to trigger the pressure sensor, and setting a preset warning value and a preset safety value according to the effective collision area.
Optionally, the step of determining an effective collision area most likely to trigger the sensor, and setting a preset warning value and a preset safety value according to the effective collision area includes:
acquiring the arrangement position of the pneumatic element, and determining the effective collision area according to the arrangement position;
and determining the preset warning value and the preset safety value according to the pedestrian collision area, different collision degrees corresponding to the pedestrian collision area and the effective collision area.
In addition, in order to achieve the above object, the present invention also provides a vehicle having an active crush function, the vehicle including: an active crush system, a memory, a processor, and a computer program stored on the memory and executable on the processor as described above, the computer program configured to implement the steps of the active crush method as described above.
In addition, in order to achieve the above object, the present invention further provides a storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the active collapsing method described above.
In the invention, the active collapsing system comprises an energy absorbing piece, a connecting piece, a sealing strip, a pressure sensor and a pneumatic piece; the connecting piece comprises a compression block and a supporting block which are connected with each other in the length direction and form a preset angle; the energy absorbing piece is connected with the compression block; the pressure sensor is arranged in the rubber sleeve of the sealing strip and has the same length as the sealing strip; the sealing strip is arranged at the upper part of the supporting block far away from the compression block; the pneumatic piece is connected with the lower part of the supporting block, which is close to the compression block, and the pneumatic piece is switched between the rigid support of the pneumatic piece and the flexible support of the energy absorbing piece based on the sensing data of the pressure sensor.
When the pedestrian head collides with the air chamber, the pressure is transmitted to the control device through the pressure sensor so as to trigger the active crumpling action of the active crumpling system, so that the energy absorbing piece absorbs collision energy, the air chamber cover plate is automatically recovered, more buffering space is obtained, the pedestrian head is prevented from directly striking with a structure with high rigidity, and the pedestrian safety is better protected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an active crush system according to an embodiment of the present invention;
FIG. 3 is a flow chart of an embodiment of an active collapsing method of the present invention;
FIG. 4 is a top view of an active crush zone of an embodiment of the present invention;
FIG. 5 is a side view of an active crush zone of an embodiment of the active crush method of the present invention.
In the figure: 1. an energy absorbing member; 2. a connecting piece; 3. a sealing strip; 4. a sensor; 5. a pneumatic member; 6. a compression block; 7. a support block; 8. an air chamber cover plate; 9. and a control device.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic device structure of a hardware running environment according to an embodiment of the present invention. The device of the hardware running environment of the embodiment of the invention can comprise: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. Wherein the communication bus 1002 is used to enable connected communication between these components. The user interface 1003 may include a Display, an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may further include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also optionally be a storage device separate from the processor 1001 described above.
Optionally, the devices of the hardware operating environment may also include cameras, RF (Radio Frequency) circuits, sensors, audio circuits, wiFi modules, and the like. Among other sensors, such as light sensors, motion sensors, and other sensors. The ambient light sensor can adjust the brightness of the display screen according to the brightness of ambient light, and the proximity sensor can turn off the display screen and/or backlight when the hardware device moves to the edge of the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the device is stationary, and the device can be used for recognizing the application of the gesture of hardware equipment (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; of course, the hardware device may also be configured with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, and the like, which are not described herein.
It will be appreciated by those skilled in the art that the device structure shown in fig. 1 is not limiting of the device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components.
As shown in fig. 1, an operating system, a network communication module, a user interface module, and a computer program may be included in the memory 1005, which is a type of computer storage medium.
In the device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server, and performing data communication with the background server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a computer program stored in the memory 1005 and perform the following operations:
when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) at the first position is larger than a preset warning value, the pneumatic piece (5) is controlled to descend, the connecting piece (2) is driven to descend, and the compression block (6) of the connecting piece (2) compresses the energy absorbing piece (1).
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
the connecting piece (2) is driven to descend, so that the compression block (6) of the connecting piece (2) compresses the energy absorbing piece (1) and the supporting block (7) of the connecting piece (2) drives the sealing strip (3) to descend to a second position;
when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) at the second position is smaller than a preset safety value, the pneumatic piece (5) is controlled to rise, the connecting piece (2) is driven to rise, and the sealing strip (3) is restored to the first position.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
if the active crush system comprises a pneumatic element (5), the pneumatic element (5) is arranged at a predetermined point in the center axis of symmetry of the nacelle cover.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
if the active crush system comprises a plurality of pneumatic elements (5), the pneumatic elements (5) are symmetrically arranged according to the central axis of symmetry of the cabin cover.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
an effective collision area most likely to trigger the pressure sensor (4) is determined, and a preset warning value and a preset safety value are set according to the effective collision area.
Further, the processor 1001 may call a computer program stored in the memory 1005, and further perform the following operations:
the step of determining an effective collision area most likely to trigger the sensor, and setting a preset warning value and a preset safety value according to the effective collision area comprises the following steps:
acquiring the arrangement position of the pneumatic piece (5), and determining the effective collision area according to the arrangement position;
and determining the preset warning value and the preset safety value according to the pedestrian collision area, different collision degrees corresponding to the pedestrian collision area and the effective collision area.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of the active crush system of the present invention. In one embodiment of the active crush system, the active crush system comprises an energy absorber (1), a connecting piece (2), a sealing strip (3), a pressure sensor (4) and a pneumatic piece (5);
the connecting piece (2) comprises a compression block (6) and a supporting block (7) which are connected with each other and form a preset angle;
the energy absorbing piece (1) is connected with the compression block (6);
the pressure sensor (4) is arranged in the rubber sleeve of the sealing strip (3) and has the same length as the sealing strip (3);
the sealing strip (3) is arranged at the upper part of the supporting block (7);
the pneumatic piece (5) is connected with the lower part of the supporting block (7).
In this embodiment, initiative crumple system includes energy-absorbing piece (1), connecting piece (2), sealing strip (3), pressure sensor (4) and pneumatic piece (5), sets up in the cavity between cabin cover and air chamber apron, compares in current pedestrian protection device, and initiative crumple system part is simple, with low costs, and the probability of error is little.
The energy absorbing piece (1) is a flexible connecting mechanism capable of repeatedly compressing and stretching, such as a rubber connecting mechanism in a folding state, and is used for enabling the energy absorbing piece (1) to absorb energy of head impact on a rigid structure of a vehicle by compressing the energy absorbing piece (1) when the head of the pedestrian impacts an effective impact area during collision with the pedestrian, so that the safety of the pedestrian is protected.
The connecting piece (2) is including interconnect and be compression piece (6) and supporting shoe (7) of angle in advance, compression piece (6) are inclination, supporting shoe (7) are horizontal angle, preset angle between the two is the obtuse angle, design connecting piece (2) like this because pneumatic piece (5) and energy-absorbing piece (1) need be located different positions, when leading to pneumatic piece (5) such as air spring to change the stroke, need let connecting piece (2) with some striking energy conduction to energy-absorbing piece (1), this part disperses the conduction of diluted striking energy needs to pass through compression piece (6) and supporting shoe (7) in proper order. The connecting element (2) is designed as a support block (7) connected to the pneumatic element (5) and driven by the pneumatic element (5), and as a compression block (6) for dispersing the impact energy to the energy absorber (1).
After the effective collision area most likely to trigger the pressure sensor (4) is determined, the pressure sensor (4) is arranged inside the rubber sleeve of the sealing strip (3) and is the same as the sealing strip (3) in length. The sealing strip (3) is of a rubber sleeve structure, a space is reserved in the sealing strip (3) which is positioned at the rear part of the cabin cover and close to the front windshield can be partially compressed when the cabin cover is closed, and water, gas and impurities are prevented from entering the engine cabin or overflowing from the engine cabin. The reason for arranging the pressure sensor (4) inside the rubber sleeve of the sealing strip (3) is that the cabin cover is impacted to further compress the sealing strip (3) so that the pressure sensor (4) is triggered as long as the collision with pedestrians occurs.
The length of the whole sealing strip (3) needs to be paved on the pressure sensor (4), so that effective triggering of the pressure sensor (4) during head collision can be guaranteed, the detection precision of the pressure sensor (4) is improved, the occurrence of an impact event which cannot be detected is avoided, and the safety of pedestrians cannot be protected. The pneumatic piece (5) drives the supporting block (7) to move up and down and simultaneously drives the sealing strip (3) arranged on the upper part of the supporting block (7) and connected with the supporting block (7) to move up and down, so that the pressure sensor (4) detects the impact energy generated when the impact occurs before the active crumple and whether the condition of recovering to the state before the active crumple is reached after the active crumple.
Optionally, the active crush system further comprises an air chamber cover plate (8) and a control device (9);
the energy absorber (1) is arranged on the air chamber cover plate (8);
the control device (9) is electrically connected with the pressure sensor (4) and the pneumatic element (5).
After the position of the pneumatic element (5) has been determined, the position of the energy absorber (1) is determined by its relative position to the pneumatic element (5), in this embodiment the energy absorber (1) is arranged above the air chamber cover (8), and the impact energy absorbed by the energy absorber (1) is absorbed by an existing rigid structure of the vehicle, such as the air chamber cover (8). The air chamber cover plate (8) is also called a ventilation cover plate or a rain collecting plate, a plastic plate with holes is arranged below the front windshield, and a water flowing groove is arranged below the air chamber cover plate (8).
The impact energy of collision with pedestrians generally does not exceed the rigidity of the rigid structure of the vehicle, so that the energy absorber (1) is arranged on the air chamber cover plate (8) and can withstand the active crumpling of the active crumpling system in multiple collisions, the safety of the active crumpling is improved, and the active crumpling system can realize multiple active crumpling.
The control device (9) is electrically connected with the pressure sensor (4) and the pneumatic piece (5) and is used for receiving the sensing value of the pressure sensor (4), judging the magnitude of the sensing value, a preset warning value and a preset safety value, correspondingly controlling the lifting and the descending of the pneumatic piece (5), and accordingly adjusting the position of the whole active crumple system.
Optionally, if the active crush system comprises a pneumatic element (5), the pneumatic element (5) is arranged at a predetermined point of the central axis of symmetry of the external nacelle cover.
Optionally, if the active crush system comprises a plurality of pneumatic elements (5), the plurality of pneumatic elements (5) are symmetrically arranged according to the central axis of symmetry of the external canopy.
For the pneumatic element (5), such as a gas spring, if the active crush system includes only one pneumatic element (5), the pneumatic element (5) is disposed at a predetermined point on the central axis of symmetry of the cabin cover, such as the point on the central axis of symmetry of the cabin cover in fig. 4, which is referred to as a Y0 region in the field of automobile collision, and if the active crush system includes a plurality of pneumatic elements (5), the plurality of pneumatic elements (5) are symmetrically disposed on the left and right, such as above the outermost fender of the vehicle in the Y0 region of the cabin cover, preferably symmetrically disposed according to the central axis of symmetry of the cabin cover. When the active crush system includes a pneumatic element (5), the compression block (6) is not extended too far forward in view of the space in the engine compartment, the component locations, the piping and its orientation, and the excessive tilt angle that would result in an inability to withstand the impact energy and its conduction, and is therefore disposed in the effective impact zone of the WAD 1500-BRRL zone of fig. 4. Preferably, it is disposed in the effective collision zone of the WAD1700 to BRRL regions in fig. 4.
In one embodiment, one of the three pneumatic components (5) is arranged in the Y0 area, the other two pneumatic components are symmetrically arranged above the wing plates on two sides of the vehicle body according to the central axis of symmetry, and the three pneumatic components (5) are controlled to ascend or descend simultaneously in the process of actively collapsing and restoring to the original position.
The pneumatic piece (5) is arranged in such a way, when the head of a pedestrian is impacted, the whole descending amplitude of the cabin cover is the same no matter the position of the impact part, so that the cabin cover can fully collapse and absorb impact energy, and the phenomenon that the cabin cover is not fully collapsed due to the fact that an inclination angle exists after being descended is avoided, and the energy absorption effect is further not obvious and the pedestrian is not protected in place is further caused.
Conversely, if the aerodynamic element (5) is not arranged on the central axis of symmetry of the nacelle cover when only one aerodynamic element (5) is included, or if a plurality of aerodynamic elements (5) are included, the aerodynamic elements (5) are not arranged symmetrically according to the central axis of symmetry of the nacelle cover, insufficient absorption of impact energy may result, such as when only one aerodynamic element (5) is included, the aerodynamic element is arranged on the left side of the nacelle cover near the fender, and when the position of collision with a pedestrian is located on the right side of the nacelle cover, the absorption of impact energy on the right side by the left side active crush system after active crush may be insufficient, resulting in reduced protection effect on the pedestrian. Likewise, when a plurality of pneumatic elements (5) are included, a symmetrical arrangement is required to avoid the occurrence of a situation in which the absorption of the impact energy is supplemented.
Referring to fig. 3, in an embodiment of the active crush method of the present invention, the active crush method is applied to the active crush system as described above, and the active crush method includes:
and S10, when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) positioned at the first position is larger than a preset warning value, controlling the pneumatic piece (5) to descend to drive the connecting piece (2) to descend, and enabling the compression block (6) of the connecting piece (2) to compress the energy absorbing piece (1).
The first position is a position when the vehicle does not collide with a pedestrian during normal running and the active crumple system does not crumple actively, and the position of the whole active crumple system is marked by the position of a single part of the sealing strip (3).
When a traffic accident collides with a pedestrian, the control device (9) receives and detects that the sensing value, such as the pressure, of the pressure sensor (4) in the sealing strip (3) positioned at the first position is larger than a preset warning value, and the active crumple system needs to perform active crumple. At this time, the control device (9) controls the pneumatic element (5) to actively descend, drives the connecting element (2) to descend, enables the compression block (6) of the connecting element (2) to compress the energy absorbing element (1), enables the energy absorbing element (1) to be in a compressed state to receive impact energy, and is equivalent to replacing the hard support of the pneumatic element (5) with the energy absorbing element (1) made of flexible materials, and does not take the pneumatic element (5) as an energy absorbing mechanism to participate in absorbing the impact energy during pedestrian collision, but rather, the transition from the hard support to the flexible material support needs to be realized quickly, so that the mechanical transition is not adopted, and the electric connection between the control device (9) and the pressure sensor (4) and the pneumatic element (5) is adopted, and the height change of the pneumatic element (5) is also considered that can be completed quickly in a short time. For pneumatic elements (5), such as gas spring arrangements, the air in the sleeve is actively reduced by drawing it out to create a vacuum, not by the impact of a pedestrian or by the weight compressing it.
When the pneumatic piece (5) descends to the limit position of the designed stroke, the energy absorbing piece (1) still needs to have a crumple space, so that the protection effect of active crumple is ensured.
In addition, if the active crush system is designed to include only two portions of the energy absorber (1), such as the spring and the connector (2), such that the energy of the device is absorbed only by the spring in the event of a collision, such a solution still does not adequately protect the pedestrian. It is a mechanical passive collapse, and first, the spring begins to deform and compress when it is impacted by energy, and the determination of the spring rate is complex and difficult. Second, a slight impact is insufficient to cause the spring to deform and compress to absorb the impact energy, which results in the pedestrian still being a hard collision with the cabin cover, and a severe impact is sufficient to cause the spring to deform and compress to absorb the impact energy, at which time the impact energy absorbed by the spring has little protection to the pedestrian, and its cushioning effect is insufficient to counteract impact injury to the pedestrian.
In this embodiment, when the pedestrian head collides, the pressure is transmitted to the control device (9) through the pressure sensor (4) to trigger the active crumpling action of the active crumpling system, so that the energy absorbing piece (1) absorbs the collision energy, the air chamber cover plate (8) is automatically recovered, more buffering space is obtained, the pedestrian head is prevented from directly striking with a structure with higher rigidity, and the pedestrian safety is better protected.
Optionally, the active collapsing method further comprises:
and S20, driving the connecting piece (2) to descend, enabling the compression block (6) of the connecting piece (2) to compress the energy absorbing piece (1) and enabling the supporting block (7) of the connecting piece (2) to drive the sealing strip (3) to descend to a second position.
And step S30, when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) at the second position is smaller than a preset safety value, controlling the pneumatic piece (5) to rise to drive the connecting piece (2) to rise, and enabling the sealing strip (3) to recover to the first position.
The second position is a position after the vehicle collides with a pedestrian and the active crumple system actively crumples, and the position of the whole active crumple system is identified by the position of a single part of the sealing strip (3), for example, the position when 80% of the energy absorbing piece (1) is compressed. The connecting piece (2) is driven to descend, the compression block (6) of the connecting piece (2) compresses the energy absorbing piece (1), and the supporting block (7) of the connecting piece (2) drives the sealing strip (3) to descend to a second position. When the sealing strip (3) descends to the second position, the energy absorbing piece (1) is in a compacted state, and the compression block (6) slides off from the energy absorbing piece (1) when the impact energy is absorbed, so that energy cannot be effectively transmitted to the energy absorbing piece (1).
When the control device (9) receives and detects that the sensing value, such as the pressure, of the pressure sensor (4) in the sealing strip (3) at the second position is smaller than a preset safety value, the active crumple system needs to be restored to the first position when the vehicle normally runs without collision with a pedestrian and the active crumple system does not crumple actively, and the possible next active crumple action is continuously executed. At the moment, the control device (9) controls the pneumatic piece (5) to ascend, drives the connecting piece (2) to ascend, and enables the sealing strip (3) to recover to the first position even if the active crumple system recovers to the first position.
Because the energy absorbing piece (1) in the active crumpling system can be repeatedly compressed and stretched, the pneumatic piece (5) can reciprocate, the connecting piece (2) is made of rigid materials which are hard connected, the sealing strip (3), the pressure sensor (4) and the control device (9) are not damaged and failed generally in the service life, the air chamber cover plate (8) is also a rigid structural component, and the air chamber cover plate can bear the final energy of active crumpling in multiple collisions. Therefore, compared with the existing pedestrian protection device, the active crumple system is not disposable, parts do not need to be replaced after active crumple, the active crumple can be repeatedly carried out, maintenance and active reset are not needed after the active crumple, and the active crumple cost is almost zero while the pedestrian safety is fully protected.
Optionally, the active collapsing method further comprises:
an effective collision area most likely to trigger the pressure sensor (4) is determined, and a preset warning value and a preset safety value are set according to the effective collision area.
Optionally, the step of determining an effective collision area most likely to trigger the sensor, and setting a preset warning value and a preset safety value according to the effective collision area includes:
acquiring the arrangement position of the pneumatic piece (5), and determining the effective collision area according to the arrangement position;
and determining the preset warning value and the preset safety value according to the pedestrian collision area, different collision degrees corresponding to the pedestrian collision area and the effective collision area.
Referring to fig. 4, fig. 4 is a schematic view of an effective collision zone of an embodiment of an active crush method of the present invention.
Referring to fig. 5, fig. 5 is a side view of an effective crush zone of an embodiment of an active crush method of the present invention.
When a pedestrian collides with a vehicle, the pedestrian collision area (area where the pedestrian needs to be protected) is the WAD1000 to WAD2000 area of the current vehicle type, and the pedestrian collision areas of different vehicle types are different. After collision with pedestrians, the pedestrians can be thrown to different areas due to inertia, and different collision degrees such as pressure are corresponding to different pedestrian collision areas.
In the present embodiment, since the arrangement position of the air-operated member (5) is located below the weather strip (3) of the front windshield, behind the cabin cover, above the air chamber cover plate (8), and the arrangement position thereof is located in the WAD1500 to BRRL region in fig. 4, the effective collision region most likely to trigger the pressure sensor (4) is determined to be the WAD1500 to BRRL region, so as to improve the accuracy of whether or not to trigger the active crush. Wherein BSRL in fig. 4 refers to the area from the vehicle a pillar to the headlight. For pneumatic components (5), such as gas springs, when the active crush system comprises a pneumatic component (5), the pneumatic component (5) is arranged at a predetermined point on the central axis of symmetry of the cabin cover, such as the point on the central axis of symmetry of the cabin cover in fig. 4, which is referred to as the Y0 region in the field of automobile collisions. Considering the space in the engine compartment, the position of the various components, the piping and its trend, and the inability of the compression block (6) to extend forward too much, the excessive inclination angle results in an inability to withstand the impact energy and its conduction, and is therefore disposed in the effective impact zone of the WAD1500 to BRRL zone in fig. 4. Preferably, it is disposed in the effective collision zone of the WAD1700 to BRRL regions in fig. 4.
And determining the collision degree corresponding to the effective collision region according to the collision degrees corresponding to different pedestrian collision regions, and determining a preset warning value for triggering the active crumple and a preset safety value for triggering the position to be restored to the non-crumple according to the collision degree corresponding to the effective collision region. In the present embodiment, a correspondence table of pedestrian collision areas and collision degrees (preset guard values and preset safety values) under different vehicle conditions, such as different vehicle speeds, is maintained. Taking fig. 4 as an example, in the correspondence table, due to the influence of inertia during collision, the collision degree corresponding to the pedestrian collision areas from the WAD1000 to the WAD1500 is the lightest, the collision degree corresponding to the pedestrian collision area from the WAD2100 to the BSRL is the heaviest, the collision degree corresponding to the pedestrian collision area is the high, and the preset warning value and the preset safety value capable of realizing the protection effect when the collision occurs to the different pedestrian collision areas are obtained according to the test or the simulation. Under the strictest protective measures, the preset warning value and the preset safety value corresponding to the WAD 1000-WAD 1500 areas corresponding to the low-speed collision with the lightest collision degree are used as the preset warning value and the preset safety value corresponding to all pedestrian collision areas.
In addition, the embodiment of the invention also provides a vehicle with an active crumple function, which comprises: an active crush system, a memory, a processor, and a computer program stored on the memory and executable on the processor as described above, the computer program configured to implement the steps of the active crush method as described above.
In addition, the embodiment of the invention also provides a computer readable storage medium, and a computer program is stored on the computer readable storage medium, and the computer program realizes the steps of the embodiments of the active collapsing method when being executed by a processor.
The development of the specific embodiments of the vehicle and the computer-readable storage medium with the active crumple function of the present invention is substantially the same as the embodiments of the active crumple method described above, and will not be described in detail herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above, including several instructions for causing a device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the scope of the invention, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.
Claims (10)
1. An active crush system is characterized by comprising an energy absorbing piece (1), a connecting piece (2), a sealing strip (3), a pressure sensor (4) and a pneumatic piece (5);
the connecting piece (2) comprises a compression block (6) and a supporting block (7) which are connected with each other in the length direction and form a preset angle;
the energy absorbing piece (1) is connected with the compression block (6);
the pressure sensor (4) is arranged in the rubber sleeve of the sealing strip (3) and has the same length as the sealing strip (3);
the sealing strip (3) is arranged at the upper part of the supporting block (7) far away from the compression block (6);
the pneumatic piece (5) is connected with the lower part of the supporting block (7) close to the compression block (6), and the pneumatic piece (5) is switched between the rigid support of the pneumatic piece (5) and the flexible support of the energy absorbing piece (1) based on the sensing data of the pressure sensor (4).
2. An active crush system according to claim 1, further comprising an air chamber cover plate (8) and a control device (9);
the energy absorber (1) is arranged between the air chamber cover plate (8) and the external cabin cover;
the control device (9) is electrically connected with the pressure sensor (4) and the pneumatic element (5).
3. An active crush system according to claim 2, wherein if the active crush system comprises one pneumatic element (5), the pneumatic element (5) is arranged at a predetermined point of the central axis of symmetry of the outboard canopy.
4. An active crush system according to claim 3, wherein if the active crush system comprises a plurality of pneumatic elements (5), the plurality of pneumatic elements (5) are symmetrically arranged about a central axis of symmetry of the outboard canopy.
5. An active crush method applied to an active crush system according to any one of claims 1 to 4, comprising:
when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) at the first position is larger than a preset warning value, the pneumatic piece (5) is controlled to descend, the connecting piece (2) is driven to descend, and the compression block (6) of the connecting piece (2) compresses the energy absorbing piece (1).
6. The active crush method of claim 5, further comprising:
the connecting piece (2) is driven to descend, so that the compression block (6) of the connecting piece (2) compresses the energy absorbing piece (1) and the supporting block (7) of the connecting piece (2) drives the sealing strip (3) to descend to a second position;
when the control device (9) detects that the sensing value of the pressure sensor (4) in the sealing strip (3) at the second position is smaller than a preset safety value, the pneumatic piece (5) is controlled to rise, the connecting piece (2) is driven to rise, and the sealing strip (3) is restored to the first position.
7. The active crush method of claim 5, further comprising:
an effective collision area most likely to trigger the pressure sensor (4) is determined, and a preset warning value and a preset safety value are set according to the effective collision area.
8. The method of active crush of claim 7, wherein the step of determining an effective collision zone most likely to trigger a sensor, and setting a preset alert value and a preset safety value based on the effective collision zone comprises:
acquiring the arrangement position of the pneumatic piece (5), and determining the effective collision area according to the arrangement position;
and determining the preset warning value and the preset safety value according to the pedestrian collision area, different collision degrees corresponding to the pedestrian collision area and the effective collision area.
9. A vehicle having an active crush function, the vehicle comprising: an active crush system, a memory, a processor, and a computer program stored on the memory and executable on the processor as claimed in any one of claims 1 to 4, the computer program configured to implement the steps of the active crush method as claimed in any one of claims 5 to 8.
10. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the active collapsing method of any of claims 5 to 8.
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| CN202210826628.1A CN115195658B (en) | 2022-07-14 | 2022-07-14 | Active crumple system, method, vehicle and storage medium |
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| CN202210826628.1A CN115195658B (en) | 2022-07-14 | 2022-07-14 | Active crumple system, method, vehicle and storage medium |
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