Crash test equipment and vehicle test system

Abstract

The present invention discloses a collision test device and a whole vehicle test system. The collision test device comprises a rigid base bracket, a deformable protective bracket and a vehicle rear simulation mechanism; the rigid base bracket is used to be mounted on a collision rigid wall; the deformable protective bracket is mounted on the front end of the rigid base bracket; the vehicle rear simulation mechanism is mounted on the front end of the rigid base bracket, and comprises a vehicle rear feature component and a radar reflection component. The collision test device can carry out collision tests of a test vehicle equipped with a CAPS system rear-ending different target vehicles indoors, and has the advantages of high scene simulation, good test consistency, low cost and convenient operation.

Description

Technical Field

[0001] The present invention relates to the technical field of safety testing, and in particular to a collision testing device and a whole vehicle testing system. Background Art

[0002] Before 100% of vehicles are unmanned, there is a transitional stage of mixed driving and unmanned driving. Active safety and unmanned driving technologies can reduce the number of accidents, but collision accidents still exist in large numbers, posing new challenges to vehicle safety protection. When a collision occurs, the airbag system in the car is detonated to protect the safety of the people in the car.

[0003] The traditional passive airbag system (hereinafter referred to as the ECU system) only collects the acceleration signal of the vehicle and uses the acceleration signal to start and make decisions on the airbag deployment algorithm. However, it has the disadvantage of not being able to deploy the airbag in time when the vehicle rear-ends.

[0004] In order to make up for the shortcomings of the ECU system, the multi-information fusion airbag system (hereinafter referred to as the CAPS system) is an airbag system that uses multi-information fusion technology. The multi-information fusion technology here is to screen the optimal attributes of objects detected by different types of sensors (such as cameras, radars, and accelerations, etc.), superimpose the probability of the existence of the target, and increase its credibility. The CAPS system is an airbag system that establishes the fusion of three attribute information: camera, radar, and acceleration. The target attribute information of the target vehicle (such as a truck) that is about to collide with the front of the vehicle is calculated through the ADAS system (millimeter wave radar and / or camera) of the car, and the target attribute information is sent to the airbag controller. Based on the independent sensor of the airbag controller, the time rationality of the target attribute information uploaded by the ADAS system is verified, and it is applied to the front collision algorithm to achieve complementary advantages and disadvantages of active and passive safety information, making the CAPS system safer and redundant, and optimizing the detonation strategy of the constraint CAPS system.

[0005] In order to meet the development requirements of the CAPS system, it is necessary to simulate the test scenario of a real rear-end collision during the CAPS system test to meet the needs of the CAPS system's detonation performance collision test and system calibration. It is urgent to provide a whole vehicle test system to meet the requirements of stable identification or excitation of the three attribute information of camera, radar and acceleration, and provide reliable guarantee for the accurate simulation of the test scenario. Summary of the invention

[0006] The embodiments of the present invention provide a collision test device and a whole vehicle test system to solve the problem that the existing collision test device cannot meet the requirements of stable recognition or excitation of various attribute information.

[0007] The present invention provides a collision test device, comprising a rigid base bracket, a deformable protective bracket and a vehicle rear simulation mechanism; the rigid base bracket is used to be mounted on a collision rigid wall; the deformable protective bracket is mounted on the front end of the rigid base bracket; the vehicle rear simulation mechanism is mounted on the front end of the rigid base bracket, and comprises a vehicle rear feature component and a radar reflection component.

[0008] Preferably, the rigid base support includes two rear mounting plates, two main longitudinal beams, a first support assembly and two second support assemblies; the two rear mounting plates are mounted parallel to each other on the collision rigid wall; the rear end of each main longitudinal beam is connected to a rear mounting plate, and the front end of each main longitudinal beam is connected to the deformable protective support and the rear vehicle simulation mechanism; the first support assembly is used to connect the two main longitudinal beams; each of the second support assemblies is used to connect a main longitudinal beam and a rear mounting plate.

[0009] Preferably, the first support assembly includes a first support member, a second support member and a third support member; the two ends of the first support member are respectively connected to the two main longitudinal beams; the two ends of the second support member are respectively connected to the two first support members; one end of the third support member is connected to the main longitudinal beam, and the other end is connected to the first support member or the second support member.

[0010] Preferably, the second support assembly includes an upper support member, a lower support member and a vertical support member; one end of the upper support member is connected to the upper part of the rear mounting plate, and the other end is connected to the upper side of the front end of the main longitudinal beam; one end of the lower support member is connected to the lower part of the rear mounting plate, and the other end is connected to the lower side of the middle part of the main longitudinal beam; one end of the vertical support member is connected to the upper support member, and the other end is connected to the main longitudinal beam.

[0011] Preferably, the deformable protective bracket includes a supporting beam, two upper mounting plates and two protective support assemblies; each of the upper mounting plates is detachably connected to the lower side of the front end of one of the main longitudinal beams; each of the protective support assemblies is connected to one of the upper mounting plates and the supporting beam.

[0012] Preferably, the protective support assembly includes a first connecting member, a second connecting member and a third connecting member arranged in an N shape; the first end of the first connecting member is connected to the supporting beam, the second end of the first connecting member is connected to the upper mounting plate and the first end of the second connecting member, the second end of the second connecting member is connected to the first end of the third connecting member, and the second end of the third connecting member is connected to the upper mounting plate.

[0013] Preferably, the rear-end simulation mechanism comprises a base crossbeam, a rear-end feature component and a radar reflection component; the base crossbeam is connected to the front end of the main longitudinal beam; the rear-end feature component is detachably arranged on the base crossbeam; the radar reflection component is arranged on the rear-end feature component and / or the base crossbeam.

[0014] Preferably, the vehicle rear feature assembly includes a tailgate frame, a simulated tailgate and a taillight assembly, wherein the tailgate frame is detachably mounted on the upper side of the base crossbeam; the simulated tailgate is movably connected to the tailgate frame via a hinge; and the taillight assembly is mounted on the lower side of the base crossbeam;

[0015] The radar reflection component includes a vertical reflection strip arranged on the simulated tailgate and / or a transverse reflection strip arranged on the base crossbeam.

[0016] Preferably, the rear-end simulation mechanism also includes a detachable connecting component, which includes a connecting square tube and a connecting flange; the side surface of the connecting square tube is connected to the front end side surface of the main longitudinal beam, and the front end of the connecting square tube is connected to the base cross beam through the connecting flange.

[0017] The present invention provides a whole vehicle test system, comprising the above-mentioned whole vehicle test system, and also comprising a calibration test device, wherein the calibration test device comprises a calibration test bracket, a flexible identification plate and an adjustable connection component; the flexible identification plate is assembled on the calibration test bracket through the adjustable connection component, and the flexible identification plate is provided with a vehicle characteristic pattern and a radar reflection strip.

[0018] The embodiment of the present invention provides a collision test device and a whole vehicle test system, wherein the rigid base bracket can be detachably connected to the collision rigid wall, and the height of the rigid base bracket relative to the collision rigid wall can be adjusted to be suitable for collision tests of different types of target vehicles, thereby improving the applicability of the collision test device. The deformable protective bracket can be detachably assembled on the rigid base bracket, and can deform and absorb energy when the test vehicle collides with the collision test device, so as to protect the collision test device. The rear-end simulation mechanism includes a rear-end feature component and a radar reflection component designed to simulate the target vehicle, so that the test vehicle equipped with the CAPS system can collect target attribute information such as camera attribute information, radar attribute information and acceleration attribute information during the collision test, and perform fusion processing on these target attribute information, so as to achieve the purpose of safety protection by timely detonating the safety airbag of the CAPS system when colliding with the collision test device. The collision test device can carry out collision tests of the test vehicle equipped with the CAPS system rear-ending different target vehicles indoors, and has the advantages of high scene simulation, good test consistency, low cost and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of a collision test device in one embodiment of the present invention;

[0021] Figure 2 is a schematic diagram of a rigid base support in one embodiment of the present invention;

[0022] Figure 3 is another schematic diagram of a collision test device according to an embodiment of the present invention;

[0023] Figure 4 is a schematic diagram of a deformable protective bracket in one embodiment of the present invention;

[0024] Figure 5 is another schematic diagram of a collision test device according to an embodiment of the present invention;

[0025] Figure 6 is a schematic diagram of a vehicle tail simulation mechanism in one embodiment of the present invention;

[0026] Figure 7 is a schematic diagram of a calibration test device in one embodiment of the present invention;

[0027] Figure 8 2 is another schematic diagram of a calibration test device in one embodiment of the present invention.

[0028] In the figure: 1. collision test device; 11. rigid base bracket; 111. rear mounting plate; 1111. first connecting groove; 112. main longitudinal beam; 113. first support assembly; 1131. first support member; 1132. second support member; 1133. third support member; 114. second support assembly; 1141. upper support member; 1142. lower support member; 1143. vertical support member; 12. deformable protective bracket; 121. supporting cross beam; 122. upper mounting plate; 1221. second connecting groove; 123. protective support assembly; 1231. first connecting member; 1232. second connecting member; 1233. third connecting member; 13. vehicle tail simulation mechanism ;131. Rear feature component;1311. Tailgate frame;1312. Simulated tailgate;1313. Taillight component;1314. Hinge;132. Radar reflection component;1321. Vertical reflection strip;1322. Horizontal reflection strip;133. Base beam;134. Rear support;135. Connecting and fixing component;1351. First fixed block;1352. Second fixed block;136. Removable connecting component;1361. Connecting square tube;1362. Connecting flange;2. Calibration test device;21. Calibration test bracket;22. Flexible identification plate;221. Vehicle feature pattern;222. Radar reflection strip;23. Adjustable connecting component. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The embodiment of the present invention provides a collision test device 1, such as Figure 1-Figure 6 As shown, the collision test device 1 includes a rigid base bracket 11, a deformable protective bracket 12 and a rear vehicle simulation mechanism 13; the rigid base bracket 11 is used to be mounted on a collision rigid wall; the deformable protective bracket 12 is mounted on the front end of the rigid base bracket 11; the rear vehicle simulation mechanism 13 is mounted on the front end of the rigid base bracket 11, and includes a rear vehicle feature component 131 and a radar reflection component 132.

[0033] The rigid base bracket 11 is a bracket used to support other components in the collision test device 1. As an example, the rigid base bracket 11 can be assembled at any height of the collision rigid wall of the collision test room by bolts or other connecting components to ensure that the collision test device 1 can be applied to the test vehicle equipped with the CAPS system to perform collision tests on different types of target vehicles.

[0034] The deformable protection bracket 12 is a bracket used for collision protection in the collision test device 1. As an example, the deformable protection bracket 12 can be detachably mounted on the front end of the rigid base bracket 11, and can deform to absorb energy when a test vehicle equipped with the CAPS system collides with the collision test device 1, so as to protect the collision test device 1.

[0035] The rear vehicle simulation mechanism 13 is a mechanism on the collision test device 1 for simulating the rear vehicle characteristics of the target vehicle being collided. As an example, the rear vehicle simulation mechanism 13 can be detachably mounted on the front end of the rigid base bracket 11, so that when the test vehicle equipped with the CAPS system collides with the collision test device 1, it can collide with the rear vehicle simulation mechanism 13 mounted on the front end of the rigid base bracket 11.

[0036] As an example, the rear-end simulation mechanism 13 includes a rear-end characteristic component 131 and a radar reflection component 132 designed to simulate the target vehicle. Since the rear-end characteristic component 131 is provided on the rear-end simulation mechanism 13, the test vehicle equipped with the CAPS system can capture the rear-end characteristic image corresponding to the rear-end characteristic component 131 through the camera to form camera attribute information. Since the radar reflection component 132 is provided on the rear-end simulation mechanism 13, the radar on the test vehicle equipped with the CAPS system can detect the radar reflection component 132 to form radar attribute information. When the test vehicle equipped with the CAPS system collides with the collision test device 1, it can excite a collision acceleration of the same intensity, so that the acceleration sensor on the test vehicle can obtain acceleration attribute information. The airbag controller of the CAPS system is connected to the camera, radar and acceleration sensor, and can obtain target attribute information such as camera attribute information, radar attribute information and acceleration attribute information, and fuse these target attribute information to achieve timely detonation of the safety airbag of the CAPS system when colliding with the collision test device 1, so as to achieve the purpose of safety protection.

[0037] In the collision test device 1 provided in this embodiment, the rigid base bracket 11 can be detachably connected to the collision rigid wall, so that the height of the rigid base bracket 11 relative to the collision rigid wall can be adjusted to be suitable for collision tests of different types of target vehicles, thereby improving the applicability of the collision test device 1. The deformable protective bracket 12 can be detachably assembled on the rigid base bracket 11, and can deform and absorb energy when the test vehicle collides with the collision test device 1, so as to protect the collision test device 1. The rear-end simulation mechanism 13 includes a rear-end feature component 131 and a radar reflection component 132 designed to simulate the target vehicle, so that the test vehicle equipped with the CAPS system can collect target attribute information such as camera attribute information, radar attribute information and acceleration attribute information during the collision test, and perform fusion processing on these target attribute information, so as to achieve the purpose of safety protection by timely detonating the safety airbag of the CAPS system when colliding with the collision test device 1. The collision test device 1 can carry out collision tests of test vehicles equipped with the CAPS system rear-ending different target vehicles indoors, and has the advantages of high scene simulation, good test consistency, low cost and convenient operation.

[0038] In one embodiment, if Figure 2As shown, the rigid base support 11 includes two rear mounting plates 111, two main longitudinal beams 112, a first support assembly 113 and two second support assemblies 114; the two rear mounting plates 111 are mounted parallel to each other on the collision rigid wall; the rear end of each main longitudinal beam 112 is connected to a rear mounting plate 111, and the front end of each main longitudinal beam 112 is connected to the deformable protective support 12 and the rear vehicle simulation mechanism 13; the first support assembly 113 is used to connect the two main longitudinal beams 112; each second support assembly 114 is used to connect a main longitudinal beam 112 and a rear mounting plate 111.

[0039] The rear mounting plate 111 is a plate-shaped element for connecting to the collision rigid wall. As an example, the rigid base bracket 11 includes two rear mounting plates 111, which can be detachably mounted at any height of the collision rigid wall, and the two rear mounting plates 111 are arranged parallel to each other, so that the collision test device 1 can be connected to the collision rigid wall through the two rear mounting plates 111.

[0040] Among them, the main longitudinal beam 112 is a longitudinal beam arranged along the longitudinal direction of the test vehicle. As an example, the rigid base bracket 11 includes two main longitudinal beams 112, and the rear end of each main longitudinal beam 112 is connected to a rear mounting plate 111, specifically connected to the middle part of the rear mounting plate 111; the front end of each main longitudinal beam 112 is connected to the deformable protective bracket 12 and the rear vehicle simulation mechanism 13, so as to support the deformable protective bracket 12 and the rear vehicle simulation mechanism 13. Specifically, the deformable protective bracket 12 can be detachably mounted on the lower side of the front end of the main longitudinal beam 112, and the rear vehicle simulation mechanism 13 can be detachably mounted on the front side of the front end of the main longitudinal beam 112, so that the test vehicle equipped with the CAPS system can complete the purpose of the collision test.

[0041] The first support assembly 113 is a assembly used to connect the two main longitudinal beams 112 to ensure the stability and reliability of the two main longitudinal beams 112 .

[0042] The second support assembly 114 is a assembly used to connect a main longitudinal beam 112 and a rear mounting plate 111 to ensure the stability and reliability of the connection between the main longitudinal beam 112 and the rear mounting plate 111 .

[0043] In one embodiment, if Figure 2 As shown, the first support assembly 113 includes a first support member 1131, a second support member 1132 and a third support member 1133; both ends of the first support member 1131 are respectively connected to the two main longitudinal beams 112; both ends of the second support member 1132 are respectively connected to the two first support members 1131; one end of the third support member 1133 is connected to the main longitudinal beam 112, and the other end is connected to the first support member 1131 or the second support member 1132.

[0044] The first support member 1131 is a support member connected to the two main longitudinal beams 112 at both ends, and is used to enhance the stability and reliability of the two main longitudinal beams 112. As an example, the first support member 1131 may be a longitudinal support member perpendicular to the main longitudinal beam 112. It is understandable that the use of at least two first support members 1131 to connect the two main longitudinal beams 112 can ensure the stability and reliability of the two main longitudinal beams 112 to a certain extent.

[0045] The second support member 1132 is a support member connected to the two first support members 1131 at both ends, and is used to enhance the stability and reliability of the two first support members 1131. As an example, the second support member 1132 may be a longitudinal support member perpendicular to the first support member 1131. It is understandable that at least one second support member 1132 is used to connect two adjacent first support members 1131 to ensure the stability and reliability of the connection of the first support members 1131, thereby ensuring the stability and reliability of the two main longitudinal beams 112.

[0046] Among them, one end of the third support member 1133 is connected to the main longitudinal beam 112, and the other end is connected to the first support member 1131 or the second support member 1132, so that the third support member 1133 cooperates with the main longitudinal beam 112 and the first support member 1131 to form a triangular stable structure, or the third support member 1133 cooperates with the main longitudinal beam 112 and the second support member 1132 to form a triangular stable structure, thereby ensuring the stability and reliability of the two main longitudinal beams 112.

[0047] In one embodiment, if Figure 2 As shown, the second support assembly 114 includes an upper support member 1141, a lower support member 1142 and a vertical support member 1143; one end of the upper support member 1141 is connected to the upper portion of the rear mounting plate 111, and the other end is connected to the upper side of the front end of the main longitudinal beam 112; one end of the lower support member 1142 is connected to the lower portion of the rear mounting plate 111, and the other end is connected to the lower side of the middle portion of the main longitudinal beam 112; one end of the vertical support member 1143 is connected to the upper support member 1141, and the other end is connected to the main longitudinal beam 112.

[0048] The upper support member 1141 is a support member disposed above the main longitudinal beam 112. As an example, one end of the upper support member 1141 is connected to the upper portion of the rear mounting plate 111, and the other end is connected to the upper side of the front end of the main longitudinal beam 112, so that the upper support member 1141, the rear mounting plate 111 and the main longitudinal beam 112 cooperate to form a triangular stable structure to ensure the stability and reliability of the connection between the main longitudinal beam 112 and the rear mounting plate 111.

[0049] The lower support member 1142 is a support member disposed below the main longitudinal beam 112. As an example, one end of the lower support member 1142 is connected to the lower portion of the rear mounting plate 111, and the other end is connected to the lower middle portion of the main longitudinal beam 112, so that the lower support member 1142, the rear mounting plate 111 and the main longitudinal beam 112 cooperate to form a triangular stable structure to ensure the stability and reliability of the connection between the main longitudinal beam 112 and the rear mounting plate 111. It can be understood that the lower support member 1142 is connected to the lower middle portion of the main longitudinal beam 112, so that a space for accommodating the deformable protective bracket 12 can be formed on the lower front end of the main longitudinal beam 112, so that the overall structure of the collision test device 1 is compact.

[0050] The vertical support member 1143 is a support member arranged in the vertical direction. As an example, one end of the vertical support member 1143 is connected to the upper support member 1141, and the other end is connected to the main longitudinal beam 112, so that the vertical support member 1143, the upper support member 1141 and the main longitudinal beam 112 cooperate to form a triangular stable structure to ensure the stability and reliability of the connection between the main longitudinal beam 112 and the upper support member 1141. Specifically, one end of the vertical support member 1143 is connected to the lower middle side of the upper support member 1141, and the other end is connected to the upper middle side of the main longitudinal beam 112 to ensure the stability and reliability of the connection.

[0051] In one embodiment, if Figure 2 As shown, two groups of first connection slots are arranged on the rear mounting plate 111 in a vertical direction, and each first connection slot group includes at least one first connection slot 1111 .

[0052] As an example. Two groups of first connection groove groups are arranged on the rear mounting plate 111 in a vertical direction, each of which includes at least one first connection groove 1111. Bolts or other connecting components can be used to pass through the first connection groove 1111 to detachably assemble the rear mounting plate 111 on the collision rigid wall. In this example, the first connection groove 1111 can be a U-shaped groove to facilitate installation. It can be understood that two groups of first connection groove groups are arranged on the rear mounting plate 111, each of which includes at least one first connection groove 1111, so that the rear mounting plate 111 can be assembled at any height of the collision rigid wall, and the connection reliability between the rear mounting plate 111 and the collision rigid plate can be guaranteed.

[0053] In one embodiment, if Figure 3 and Figure 4 As shown, the deformable protective bracket 12 includes a supporting beam 121, two upper mounting plates 122 and two protective support assemblies 123; each upper mounting plate 122 is detachably connected to the lower side of the front end of a main longitudinal beam 112; each protective support assembly 123 is connected to an upper mounting plate 122 and a supporting beam 121.

[0054] The supporting crossbeam 121 is a crossbeam arranged along the lateral direction of the test vehicle. The upper mounting plate 122 is a mounting plate used to connect with the rigid base bracket 11. The protective support component 123 is a component used to deform and absorb energy when a collision occurs.

[0055] As an example, two protective support components 123 are arranged on the support crossbeam 121, one end of each protective support component 123 is fixedly arranged on the support crossbeam 121, and the other end is detachably mounted on the lower side of the front end of the main longitudinal beam 112 through the upper mounting plate 122. In this example, the upper mounting plate 122 on the deformable protective bracket 12 is detachably connected to the lower side of the front end of the main longitudinal beam 112, so that the support crossbeam 121 is located at the front end of the main longitudinal beam 112. When the test vehicle collides with the collision test device 1, its support crossbeam 121 collides with the test vehicle, which causes the protective support component 123 to deform and absorb energy, thereby protecting the collision test device 1. It is understandable that since the protective support component 123 will deform when the test vehicle collides with the collision test device 1, it needs to be replaced frequently. The protective support component 123 is detachably connected to the main longitudinal beam 112 through the upper mounting plate 122, which can ensure the convenience of its replacement.

[0056] In one embodiment, if Figure 4 As shown, two groups of second connection grooves are arranged on the upper mounting plate 122 along the longitudinal direction, and each second connection groove group includes at least two second connection grooves 1221 .

[0057] As an example, two groups of second connection grooves are provided on the upper mounting plate 122 along the longitudinal direction, and each second connection groove group includes at least one second connection groove 1221. Bolts or other connection components can be used to pass through the second connection grooves 1221 to detachably assemble the upper mounting plate 122 on the main longitudinal beam 112, so as to facilitate the updating of the deformable protective bracket 12. For example, the second connection groove 1221 can be a strip-shaped connection groove provided along the longitudinal direction, so that when the test vehicle collides with the collision test device 1, the connection position between the upper mounting plate 122 and the main longitudinal beam 112 can be adjusted in the collision direction, which helps to ensure its collision protection effect. For example, the second connection groove 1221 can be a U-shaped connection groove for easy installation.

[0058] In one embodiment, the protective support assembly 123 includes a first connecting member 1231, a second connecting member 1232 and a third connecting member 1233 arranged in an N shape; the first end of the first connecting member 1231 is connected to the supporting beam 121, the second end of the first connecting member 1231 is connected to the upper mounting plate 122 and the first end of the second connecting member 1232, the second end of the second connecting member 1232 is connected to the first end of the third connecting member 1233, and the second end of the third connecting member 1233 is connected to the upper mounting plate 122.

[0059] As an example, the protective support assembly 123 includes a first connecting member 1231, a second connecting member 1232 and a third connecting member 1233 arranged in an N shape, and the first connecting member 1231, the second connecting member 1232 and the third connecting member 1233 are connected end to end to ensure the collision energy absorption effect of the protective support assembly 123; the first end of the first connecting member 1231 is connected to the supporting beam 121, and the second end of the first connecting member 1231 and the second end of the third connecting member 1233 are both connected to the upper mounting plate 122 to ensure the reliability of the connection between the protective support assembly 123 and the upper mounting plate 122.

[0060] In one embodiment, if Figure 3 , Figure 5 and Figure 6 As shown, the rear-end simulation mechanism 13 includes a base crossbeam 133, a rear-end feature component 131 and a radar reflection component 132; the base crossbeam 133 is connected to the front end of the main longitudinal beam 112; the rear-end feature component 131 is detachably arranged on the base crossbeam 133; the radar reflection component 132 is arranged on the rear-end feature component 131 and / or the base crossbeam 133.

[0061] The base cross beam 133 is a cross beam used to support other components in the rear vehicle simulation mechanism 13. As an example, the base cross beam 133 can be detachably mounted on the front end of the main longitudinal beam 112, so that when the test vehicle equipped with the CAPS system collides with the collision test device 1, the base cross beam 133 directly collides with the test vehicle.

[0062] The rear feature component 131 is a component designed to simulate the rear feature of the target vehicle. As an example, the rear feature component 131 is a component designed based on the vehicle features of the target vehicles of different models that the test vehicle collides with, so that the camera on the test vehicle equipped with the CAPS system can capture the camera attribute information of the rear feature component 131. In this example, the rear feature component 131 is detachably connected to the base crossbeam 133, which can be easily replaced when the test vehicle equipped with the CAPS system performs a collision test on target vehicles of different models.

[0063] The radar reflection component 132 is a component for reflecting radar waves. As an example, the radar reflection component 132 can be set on the rear feature component 131, or on the base cross beam 133, or on both the rear feature component 131 and the base cross beam 133, so that the radar on the test vehicle equipped with the CAPS system can collect radar attribute information.

[0064] In one embodiment, if Figure 6As shown, the rear feature component 131 includes a tailgate frame 1311, a simulated tailgate 1312 and a taillight assembly 1313. The tailgate frame 1311 is detachably assembled on the upper side of the base beam 133; the simulated tailgate 1312 is movably connected to the tailgate frame 1311 via a hinge 1314; and the taillight assembly 1313 is assembled on the lower side of the base beam 133.

[0065] The tailgate frame 1311 is a frame for assembling the simulated tailgate 1312. The simulated tailgate 1312 is a tailgate structure for simulating the target vehicle. The tailgate assembly is a taillight structure for simulating the target vehicle.

[0066] As an example, when the target vehicle is a truck or other vehicle with a tailgate structure, its rear feature component 131 includes a tailgate frame 1311 detachably mounted on the upper side of the base crossbeam 133, a simulated tailgate 1312 hinged on the tailgate frame 1311 through a hinge 1314, and a taillight component 1313 mounted on the lower side of the base crossbeam 133. A door lock rod may also be provided on the simulated tailgate 1312. In this example, the rear feature component 131 can fully simulate the rear features of the target vehicle, so that during the collision test, the test vehicle equipped with the CAPS system can capture the camera attribute information formed by the rear feature component 131 in real time through the camera, and can simulate the camera attribute information formed by the real target vehicle to complete the detonation test of the CAPS system, so as to ensure that when the vehicle equipped with the CAPS system rear-ends the target vehicle, its CAPS system can be detonated in time to achieve effective safety protection.

[0067] In one embodiment, if Figure 6 As shown, the radar reflection assembly 132 includes a vertical reflection strip 1321 disposed on the simulated tailgate 1312 , and / or a horizontal reflection strip 1322 disposed on the base cross beam 133 .

[0068] In one example, the radar reflection component 132 may include only vertical reflection bars 1321 disposed on the simulated tailgate 1312, specifically vertical reflection bars 1321 disposed on both sides of the simulated tailgate 1312. In another example, the radar reflection component 132 may include only horizontal reflection bars 1322 disposed on the base crossbeam 133. In yet another example, the radar reflection component 132 may include vertical reflection bars 1321 disposed on the simulated tailgate 1312 and horizontal reflection bars 1322 disposed on the base crossbeam 133.

[0069] In one embodiment, if Figure 5 As shown, the vehicle rear simulation mechanism 13 further includes a vehicle rear support member 134 , one end of which is connected to the tailgate frame 1311 , and the other end of which is connected to the main longitudinal beam 112 .

[0070] As an example, the vehicle tail simulation mechanism 13 further includes a vehicle tail support 134, which is used to connect the tailgate frame 1311 and the main longitudinal beam 112, and is used to ensure the connection reliability between the tailgate frame 1311 and the main longitudinal beam 112. In this example, one end of the vehicle tail support 134 is connected to the back of the tailgate frame 1311, and the other end is connected to the upper side of the rear end of the main longitudinal beam 112, so that the vehicle tail support 134 cooperates with the tailgate frame 1311 and the main longitudinal beam 112 to form a triangular stable structure, which helps to ensure the stability and reliability of the connection between the tailgate frame 1311 and the main longitudinal beam 112.

[0071] In one embodiment, if Figure 3 As shown, at least two groups of connecting and fixing components 135 are provided on the base beam 133, and each connecting and fixing component 135 includes a first fixing block 1351 and a second fixing block 1352 which are arranged in parallel and opposite to each other, and a gap for accommodating the tailgate frame 1311 is formed between the first fixing block 1351 and the second fixing block 1352, and a first connecting through hole and a second connecting through hole are respectively provided on the first fixing block 1351 and the second fixing block 1352.

[0072] The connection and fixing component 135 is a component disposed on the base cross beam 133 for connecting with the tailgate frame 1311 .

[0073] As an example, at least two groups of connecting and fixing components 135 are provided on the base cross beam 133, and each connecting and fixing component 135 can be matched with bolts or other connecting components to fix the tailgate frame 1311 on the base cross beam 133. Each connecting and fixing component 135 includes a first fixing block 1351 and a second fixing block 1352 arranged in parallel and opposite to each other, and a receiving gap for receiving the tailgate frame 1311 is formed between the first fixing block 1351 and the second fixing block 1352, and a first connecting through hole and a second connecting through hole are respectively provided on the first fixing block 1351 and the second fixing block 1352. In this example, the tailgate frame 1311 can be assembled on the receiving gap formed by at least two groups of the first fixing blocks 1351 and the second fixing blocks 1352, and bolts or other connecting components are used to pass through the first connecting through hole and the second connecting through hole to realize a detachable connection between the base cross beam 133 and the tailgate frame 1311.

[0074] In one embodiment, if Figure 2 , Figure 3 and Figure 5 As shown, the rear vehicle simulation mechanism 13 also includes a detachable connecting component 136, which includes a connecting square tube 1361 and a connecting flange 1362; the side of the connecting square tube 1361 is connected to the front end side of the main longitudinal beam 112, and the front end of the connecting square tube 1361 is connected to the base cross beam 133 through the connecting flange 1362.

[0075] The connecting square tube 1361 is a square tubular structure used to connect the main longitudinal beam 112 and the base cross beam 133. The connecting flange 1362 is a flange used to connect the main longitudinal beam 112 and the base cross beam 133.

[0076] As an example, one side of the connecting square tube 1361 is connected to the front side of the main longitudinal beam 112. Specifically, one side of the connecting square tube 1361 can be welded to the front side of the main longitudinal beam 112, or bolts or other connecting components can be used to fix one side of the connecting square tube 1361 to the front side of the main longitudinal beam 112. In addition, the front end of the connecting square tube 1361 is detachably connected to the base cross beam 133 through the connecting flange 1362, so as to facilitate the updating of the rear end simulation mechanism 13.

[0077] An embodiment of the present invention provides a whole vehicle test system, and the whole vehicle test system includes the above-mentioned collision test device 1.

[0078] In the above-mentioned collision test device 1, the rigid base bracket 11 can be detachably connected to the collision rigid wall, so that the height of the rigid base bracket 11 relative to the collision rigid wall can be adjusted to be suitable for collision tests of different types of target vehicles, thereby improving the applicability of the collision test device 1. The deformable protective bracket 12 can be detachably assembled on the rigid base bracket 11, and can deform and absorb energy when the test vehicle collides with the collision test device 1, so as to protect the collision test device 1. The rear-end simulation mechanism 13 includes a rear-end feature component 131 and a radar reflection component 132 designed to simulate the target vehicle, so that the test vehicle equipped with the CAPS system can collect target attribute information such as camera attribute information, radar attribute information and acceleration attribute information during the collision test, and perform fusion processing on these target attribute information, so as to achieve the purpose of safety protection by timely detonating the safety airbag of the CAPS system when colliding with the collision test device 1. The collision test device 1 can carry out collision tests of test vehicles equipped with the CAPS system rear-ending different target vehicles indoors, and has the advantages of high scene simulation, good test consistency, low cost and convenient operation.

[0079] like Figure 7 and Figure 8 As shown, the whole vehicle test system also includes a calibration test device 2, which includes a calibration test bracket 21, a flexible identification plate 22 and an adjustable connection component 23; the flexible identification plate 22 is assembled on the calibration test bracket 21 through the adjustable connection component 23, and the flexible identification plate 22 is provided with a vehicle characteristic pattern 221 and a radar reflection strip 222.

[0080] The calibration test device 2 is a device used by a test vehicle equipped with a CAPS system during the system calibration phase.

[0081] The calibration test bracket 21 is a bracket used to support other components in the calibration test device 2. As an example, the calibration test bracket 21 includes two bracket columns arranged in parallel and opposite to each other and a bracket cross bar used to connect the two bracket columns, so that the two bracket columns and one bracket cross bar cooperate to form a door-shaped bracket.

[0082] Among them, the flexible identification plate 22 is a plate-shaped element used to assist in testing the target vehicle in the calibration test device 2. The vehicle characteristic pattern 221 is an image used to reflect the vehicle characteristics of the target vehicle. The radar reflection strip 222 is an element used to reflect radar waves. As an example, the front or side of the flexible identification plate 22 may be provided with a vehicle characteristic pattern 221 corresponding to the target vehicle, so that during the system calibration stage, the camera of the CAPS system can collect the vehicle characteristic pattern 221 to complete the calibration of the camera-related parameters. As an example, the front or side of the flexible identification plate 22 may be provided with a radar reflection strip 222, so that during the system calibration stage, the radar of the CAPS system can collect radar test data to complete the calibration of radar-related parameters. In this example, a vehicle characteristic pattern 221 may be provided on the front of the flexible identification plate 22, and a radar reflection strip 222 may be provided on the back. It can be understood that the radar reflection strip 222 may be a radar reflection tape.

[0083] Among them, the adjustable connection component 23 is an adjustable connection component, specifically a component for connecting the flexible identification plate 22 and the calibration test bracket 21. As an example, the adjustable connection component 23 is used to fix the flexible identification plate 22 on the calibration test bracket 21, and the height of the flexible identification plate 22 relative to the calibration test bracket 21 can be adjusted. For example, the adjustable connection component 23 can be used to fix the flexible identification plate 22 in the middle position of the bracket cross bar, and the distance of the flexible identification plate 22 relative to the bracket cross bar can be adjusted. In this example, the adjustable connection component 23 can be a soft rope, which can adjust the relative distance between the flexible identification plate 22 and the calibration test bracket 21, so as to adjust the height of the flexible identification plate 22 and the ground to meet the test requirements of different vehicle models.

[0084] During the system calibration phase, it is necessary to use the data collected by the camera and radar when the test vehicle approaches or hits the rear of the target vehicle at different collision speeds, such as vehicle type, front vehicle speed, interval distance and predicted collision time. The CAPS system uses these test data to distinguish the danger level and calibrate other algorithms. In order to meet the above requirements, the calibration test device 2 is required to stably simulate the rear of the target vehicle so that the test vehicle equipped with the CAPS system will not cause test safety risks when colliding with the calibration test device 2. The structural design of the flexible identification plate 22 is adopted, and the vehicle characteristic pattern 221 corresponding to the target vehicle is provided on the flexible identification plate 22, which can meet the requirements of the camera to identify the target vehicle; moreover, the flexible identification plate 22 is provided with a radar reflection strip 222, which can meet the requirements of the radar to receive radar reflection waves. As a whole, the calibration test device 2 has the advantages of simple structure, stable performance, safety and high efficiency.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A collision test device, characterized in that: It comprises a rigid base support, a deformable protective support and a vehicle tail simulation mechanism; the rigid base support comprises two rear mounting plates, two main longitudinal beams, a first support assembly and two second support assemblies; the two rear mounting plates are parallelly mounted on the collision rigid wall; the rear end of each main longitudinal beam is connected to a rear mounting plate; the first support assembly is used to connect the two main longitudinal beams; each of the second support assemblies is used to connect a main longitudinal beam and a rear mounting plate; the deformable protective support comprises a supporting crossbeam, two upper mounting plates and two protective support assemblies; each upper mounting plate is detachably connected to the lower side of the front end of a main longitudinal beam; Each of the protective support components is connected to an upper mounting plate and the supporting crossbeam; the rear-end simulation mechanism is assembled on the front ends of the two main longitudinal beams and includes a rear-end characteristic component and a radar reflection component.

2. The collision test device according to claim 1, characterized in that: The first support assembly includes a first support member, a second support member and a third support member; the two ends of the first support member are respectively connected to the two main longitudinal beams; the two ends of the second support member are respectively connected to the two first support members; one end of the third support member is connected to the main longitudinal beam, and the other end is connected to the first support member or the second support member.

3. The collision test device according to claim 1, characterized in that: The second support assembly includes an upper support member, a lower support member and a vertical support member; one end of the upper support member is connected to the upper part of the rear mounting plate, and the other end is connected to the upper side of the front end of the main longitudinal beam; one end of the lower support member is connected to the lower part of the rear mounting plate, and the other end is connected to the lower side of the middle part of the main longitudinal beam; one end of the vertical support member is connected to the upper support member, and the other end is connected to the main longitudinal beam.

4. The collision test device according to claim 1, characterized in that: The protective support assembly includes a first connecting member, a second connecting member and a third connecting member arranged in an N shape; the first end of the first connecting member is connected to the supporting beam, the second end of the first connecting member is connected to the upper mounting plate and the first end of the second connecting member, the second end of the second connecting member is connected to the first end of the third connecting member, and the second end of the third connecting member is connected to the upper mounting plate.

5. The collision test device according to claim 1, characterized in that: The rear-end simulation mechanism includes a base crossbeam, a rear-end feature component and a radar reflection component; the base crossbeam is connected to the front end of the main longitudinal beam; the rear-end feature component is detachably arranged on the base crossbeam; the radar reflection component is arranged on the rear-end feature component and / or the base crossbeam.

6. The collision test device according to claim 5, characterized in that: The vehicle rear feature assembly includes a tailgate frame, a simulated tailgate and a taillight assembly, wherein the tailgate frame is detachably mounted on the upper side of the base crossbeam; the simulated tailgate is movably connected to the tailgate frame through a hinge; and the taillight assembly is mounted on the lower side of the base crossbeam; The radar reflection component includes a vertical reflection strip arranged on the simulated tailgate and / or a transverse reflection strip arranged on the base crossbeam.

7. The collision test device according to claim 5, characterized in that: The rear-end simulation mechanism also includes a detachable connecting component, which includes a connecting square tube and a connecting flange; the side surface of the connecting square tube is connected to the front end side surface of the main longitudinal beam, and the front end of the connecting square tube is connected to the base cross beam through the connecting flange.

8. A vehicle test system, characterized in that: It comprises the collision test device as described in any one of claims 1 to 7, and also comprises a calibration test device, wherein the calibration test device comprises a calibration test bracket, a flexible identification plate and an adjustable connection assembly; the flexible identification plate is assembled on the calibration test bracket through the adjustable connection assembly, and the flexible identification plate is provided with a vehicle characteristic pattern and a radar reflection strip.

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