CN109269813B - Vehicle collision early warning function evaluation method and tray equipment - Google Patents
Vehicle collision early warning function evaluation method and tray equipment Download PDFInfo
- Publication number
- CN109269813B CN109269813B CN201810928764.5A CN201810928764A CN109269813B CN 109269813 B CN109269813 B CN 109269813B CN 201810928764 A CN201810928764 A CN 201810928764A CN 109269813 B CN109269813 B CN 109269813B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- test
- car
- warning function
- target
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000011156 evaluation Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 184
- 238000000034 method Methods 0.000 claims abstract description 27
- 230000008569 process Effects 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000011158 quantitative evaluation Methods 0.000 abstract description 2
- 230000000007 visual effect Effects 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000011990 functional testing Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000013522 software testing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides a vehicle collision early warning function evaluation method, which specifically comprises the following steps: placing a test vehicle with a collision early warning function in a preset test scene; the preset test scene comprises: at least one parking space for parking the test vehicle; the target false car is fixed on the tray equipment and is positioned on a road crossed with the extension lines of the inlet and the outlet of the parking space; the target false vehicle travels straight along the road from the initial position to the parking space; when the target dummy vehicle drives to a preset position in front of the entrance and exit of the parking space, the test vehicle receives a reversing signal to start reversing; collecting running dynamic information of a test vehicle and a target false vehicle; the driving dynamic information comprises driving videos and GPS data; and evaluating the vehicle collision early warning function according to the driving dynamic information. The method can be used for testing and evaluating the performance of the vehicle collision early warning function, provides an objective quantitative evaluation method, and has high accuracy.
Description
Technical Field
The invention belongs to the technical field of automobile active safety performance testing, and particularly relates to a vehicle collision early warning function evaluation method and a tray device.
Background
With the popularization of automobiles, traffic accidents frequently occur, wherein a part of traffic accidents occur in the process of backing or parking, and an important factor causing the accidents is the automobile blind area. Therefore, an automobile equipped with a rear-side blind-area warning function (RTA) system has been developed.
The RTA system is used for helping a driver to observe areas on two sides behind the vehicle, and when the vehicle backs, the RTA system reminds the driver whether the vehicle or people approach the rear of the vehicle or not so as to avoid collision accidents. Among numerous blind area early warning auxiliary functions, the collision early warning function of the rear side of the vehicle is one of the functions, and the collision early warning function of the vehicle needs to be tested before the vehicle leaves a factory. However, the functional verification test method for the product is still blank at home and abroad, and an evaluation method and tray equipment special for the automobile collision early warning function are lacked.
Disclosure of Invention
In view of this, the present invention aims to provide a method for evaluating a vehicle collision warning function, so as to implement performance test and evaluation of the vehicle collision warning function.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a vehicle collision early warning function evaluation method specifically comprises the following steps:
placing a test vehicle with a collision early warning function in a preset test scene; the preset test scene comprises: at least one parking space for parking the test vehicle; the target false car is fixed on the tray equipment and is positioned on a road crossed with the extension lines of the inlet and the outlet of the parking space;
the target false vehicle travels straight along the road from the initial position to the parking space;
when the target dummy vehicle drives to a preset position in front of the entrance and exit of the parking space, the test vehicle receives a reversing signal to start reversing;
collecting running dynamic information of a test vehicle and a target false vehicle; the driving dynamic information comprises driving videos and GPS data;
and evaluating the vehicle collision early warning function according to the running dynamic information.
Further, the driving video comprises: the tail part of the test vehicle and the video of the tail part of the test vehicle facing the road sideline, the video of the target false vehicle driving towards the parking space and the video of the instrument panel indication information;
the GPS data includes: the real-time position of the test vehicle, the deceleration, the yaw angle, the real-time position of the target vehicle dummy and/or the relative distance to a rear position of the test vehicle on the side close to the target vehicle dummy.
Further, the preset test scenario further includes: setting vehicle distance scale marks on the road side;
and determining the relative distance between the target dummy car and the rear position of the test car close to the target dummy car side according to the car distance scale markings, wherein the relative distance comprises the scale value of the car distance scale markings corresponding to the real-time position of the target dummy car.
Further, the test vehicle comprises, before receiving a reverse signal to start reversing: and calibrating the initial position of the test vehicle when the test vehicle starts backing according to the distance between the tail of the test vehicle and the road side line.
Further, when the target dummy vehicle drives to the predetermined position in front of the entrance/exit of the parking space, the test vehicle receiving a reverse signal to start reversing further comprises: calibrating the preset position;
calibrating the predetermined location comprises:
setting the distance from the tail of the calibrated test vehicle to the road side line as L;
setting the length of L to different values in a plurality of times;
corresponding to different L lengths each time, when the target false car runs close to the test car and the image of the target false car is seen in the backing image screen of the test car, recording the distance from the front end of the target false car to the test car;
and taking the distance as the preset position.
Further, the corresponding different L lengths at each time, when the target vehicle is driven to approach the test vehicle and the image of the target vehicle is seen in the reversing image screen of the test vehicle, the recording of the distance from the front end of the target vehicle to the test vehicle includes:
starting a side and rear collision early warning function of the test vehicle in the process of backing;
gradually increasing the distance value, and recording the distance value in real time;
when the distance is increased to a certain value, the side and rear collision early warning function is not activated;
and determining the distance value corresponding to the inactivated state as a critical distance value.
Further, the method further comprises: and evaluating the vehicle collision early warning function performance according to the critical distance value.
Further, the preset test scenario further includes: and a reference vehicle is arranged on at least one side of the parking space, the orientation of the reference vehicle is consistent with that of the test vehicle, and the reference vehicle is used for shielding the rear side sight and/or images and/or sound acquisition signals of the test vehicle.
Further, the distance between the reference vehicle and the test vehicle in the parking space is set to be 0.3 m;
calibrating the predetermined location further comprises: changing the front and back relative positions of the reference vehicle and the test vehicle, wherein the relative position is marked as X;
monitoring whether a vehicle collision early warning function is in an activated state after the test vehicle backs when the reference vehicle is at different positions and the preset position of the target false vehicle is changed in real time;
and when the collision early warning function is not activated after the test vehicle is monitored to back up, calibrating the position of the corresponding target false vehicle relative to the test vehicle as the preset position.
Further, the length of L is set to 1m, 2m, 3m, 4m or 5m, and the speed of the target vehicle is set to 10km/h, 20km/h or 30 km/h.
Further, the test vehicle further comprises, after receiving the reverse signal and starting to reverse: and judging whether the vehicle collision early warning function is in a normal activation state or not according to sound or visual information.
Compared with the prior art, the vehicle collision early warning function evaluation method has the following advantages:
the method comprises the steps that a test scene is preset, a test vehicle with a collision early warning function is placed in the test scene, and running dynamic information of the test vehicle and a target false vehicle is collected, wherein the running dynamic information comprises running videos and GPS data; and evaluating the vehicle collision early warning function according to the running dynamic information. The method can be used for testing and evaluating the performance of the vehicle collision early warning function, provides an objective quantitative evaluation method, and has high accuracy.
The invention also aims to provide a tray device for testing the early warning function of the vehicle, which is used for testing the performance of the early warning function of the collision of the vehicle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a tray equipment for vehicle early warning function test, includes truckle, truss structure and mask, the truckle is fixed in truss structure, truss structure is formed by many tubular metal resonator cross welding, be equipped with the mounting hole on the tubular metal resonator, the mask passes through the mounting hole to be fixed at truss structure, truss structure includes central truss and edge truss, central truss is the rectangle grid structure that many aluminum pipes intersect perpendicularly and weld to become, the edge truss for the central truss is an angle downward sloping setting, the edge truss comprises many welding in the peripheral aluminum pipe of central truss.
Further, the caster is a directional caster.
Further, the inclination angle of the edge truss relative to the central truss is 15-35 degrees.
Furthermore, a transition arc surface is arranged at the joint of the edge truss and the central truss.
Furthermore, the metal pipe bottom feet of two adjacent surfaces in the edge truss are connected by a bottom edge beam to form a triangular structure.
Further, the tray device further comprises a traction self-breaking device, and the traction self-breaking device comprises: connecting plate, first end couple, sucking disc and second end couple, first end couple is fixed in connecting plate one side, the sucking disc adsorbs in the connecting plate opposite side, second end couple is in the same place with sucking disc end-to-end connection, it passes through from the disconnecting means first end couple with tray tip flexible line is connected.
Further, be equipped with the bayonet socket on the tray mask terminal surface, flexible line both ends are equipped with the buckle, the institute flexible line passes first end portion couple, through the buckle card is gone into in the bayonet socket, when flexible line is in straightening state, flexible line with the line of mask terminal surface bayonet socket constitutes an isosceles triangle that the footing is 30.
Furthermore, the periphery of the upper surface of the mask is provided with a magic tape or an adhesive.
Compared with the prior art, the tray device for the vehicle early warning function test has the following advantages:
the invention is used for supporting a carrier gas ball false car, the tray equipment is pulled by the traction mechanism to advance and pass behind the test car so as to simulate the real state of an interference car when the car is parked at the rear side of the car, and therefore, the invention can be used as experimental equipment for testing the collision early warning function of the car, and has the advantages of simple equipment structure, comprehensive functions, strong practicability and good stability.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of a method for evaluating a vehicle collision warning function according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a predetermined test scenario illustrated in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another predetermined test scenario illustrated in FIG. 1 according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a tray device for vehicle early warning function testing according to an embodiment of the present invention;
fig. 5 and 6 are schematic structural views of a truss according to an embodiment of the invention;
FIG. 7 is a schematic structural diagram of a traction self-disconnect device according to an embodiment of the present invention;
fig. 8 is a schematic drawing of a tray device according to an embodiment of the present invention.
Description of reference numerals:
1-a tray; 11-a caster; 12-truss structure; 13-mask; 14-mounting holes; 121-a central truss; 122-edge truss; 123-junction; 124-triangular structure; 2-a traction self-breaking device; 21-a connecting plate; 22-a first end hook; 23-a suction cup; 24-second end hook.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to clearly disclose the technical solution of the embodiment of the present invention, fig. 2 and fig. 3 are briefly described as follows: in fig. 2 and 3D, which are directed to the road mentioned herein, the open bold arrow refers to the test vehicle reversing direction and the solid arrow refers to the target false vehicle advancing direction.
Referring to fig. 1 to 3, an embodiment of the present invention provides a method for evaluating a vehicle collision warning function, which is a solution provided for evaluating a vehicle rear-lateral collision warning function, and includes the steps of:
s11, placing the test vehicle with the collision early warning function in a preset test scene;
in this embodiment, as shown in fig. 2 or fig. 3, the preset test scenario includes: at least one parking space for parking the test vehicle T; the target false car VT is fixed on the tray equipment and is positioned on a road crossed with the extension line of the inlet and the outlet of the parking space;
in order to objectively and accurately evaluate the collision early warning/auxiliary function performance of the rear side of the vehicle as much as possible, a test scene should simulate a real parking scene as much as possible; therefore, the road on which the target false car is located can be vertically arranged at the entrance and exit of the parking space according to the situation, the road vertical to the extension line of the entrance and exit of the parking space can be selected, and the cross road having a non-vertical relation with the parking space can be selected. Various parking scenes can be selected one by one in the test for performance test evaluation, and then comprehensive evaluation is carried out.
In this embodiment, the target vehicle dummy may have a self-driving function, and in order to prevent the target vehicle dummy from being directly damaged by collision due to a failure in the early warning function during the test, the target vehicle dummy is disposed on a specially designed tray device and is moved by being pulled by a traction device.
S12, the target false car travels straight along the road from the initial position to the parking space direction;
in this embodiment, the target false vehicle should also simulate the actual driving state of the passing vehicle on the road as much as possible.
S13, when the target dummy car drives to the preset position in front of the parking space entrance and exit, the test car receives a reversing signal to start reversing;
in this embodiment, in order to test and evaluate the vehicle rear side collision early warning function, the test vehicle should always start the collision early warning function in the whole process of backing. As an optional embodiment, the test vehicle further comprises, after receiving the reverse signal and starting the reverse: and judging whether the vehicle collision early warning function is in a normal activation state or not according to sound or visual information.
In this embodiment, the visual information includes indication information of an instrument panel or light change information; the auditory information includes the sound of the sound in the vehicle and the alarm sound of the buzzer. The driver can determine whether the rear parking warning/assisting function (hereinafter referred to as RTA function for brevity) of the test vehicle is in a normal activation state during the reversing process according to the indication information on the surface of the instrument panel, for example, the indication function is normal or similar word-like prompt, or the audible information (for example, alarm) sent by the sound in the vehicle and the buzzer.
In this embodiment, the sound-light alarm collector collects the sound-light signal and converts the sound-light signal into an electrical signal, and whether the RTA function is triggered is determined by the change (in the form of pulses) of the electrical signal.
S14, collecting dynamic running information of the test vehicle and the target false vehicle; the driving dynamic information comprises driving videos and GPS data;
in this embodiment, the information may be acquired by installing a camera and a GPS device on the vehicle.
In this embodiment, as an optional embodiment, the driving video includes: the video of the tail part of the test vehicle and the video of the tail part of the test vehicle facing the road sideline, the video of the target false vehicle driving towards the parking space and the video of the instrument panel indication information.
The GPS data includes: the real-time position of the test vehicle, the deceleration, the yaw angle, the real-time position of the target vehicle dummy and/or the relative distance to a rear position of the test vehicle on the side close to the target vehicle dummy.
In this embodiment, shoot visual angle orientation test car afterbody, afterbody towards roadside line region, target false car front end and roadside line isoposition with the camera, can realize same parameter, the video contrastive analysis is carved simultaneously to many visual angles to and the contrastive analysis of the data of gathering through the same parameter different acquisition modes of video acquisition and GPS data, can ensure information acquisition's accuracy nature.
And S15, evaluating the vehicle collision early warning function according to the running dynamic information.
In this embodiment, some of the specific information included in the driving dynamic information are quantifiable key evaluation parameters, and the evaluation can be relatively objective and accurate according to the quantifiable key parameters, and has a reference meaning for evaluating the performance of the RTA function.
The invention embodiment a vehicle collision early warning function evaluation method, through presetting a test scene, placing a test vehicle with collision early warning function in the test scene, and collecting dynamic running information of the test vehicle and a target false vehicle, wherein the dynamic running information comprises running video and GPS data; and evaluating the vehicle collision early warning function according to the running dynamic information. The method can be used for testing and evaluating the performance of the vehicle collision early warning function.
Furthermore, according to the evaluation method provided by the embodiment of the invention, the vehicle collision early warning function is evaluated according to the driving dynamic information comprising the driving video and the GPS data, a quantitative and objective evaluation scheme is provided, the accuracy is relatively high, and the evaluation result has a reference value.
In this embodiment, the preset test scenario further includes: setting vehicle distance scale marks on the road side;
and determining the relative distance between the target dummy car and the rear position of the test car close to the target dummy car side according to the car distance scale mark lines.
In this embodiment, the determining, according to the vehicle distance scale markings, the relative distance between the target vehicle and the test vehicle at the rear position close to the target vehicle comprises: and collecting the scale value of the vehicle distance scale mark corresponding to the real-time position of the target false vehicle.
In this embodiment, before the test vehicle receives the reverse signal and starts to reverse the vehicle, the method includes: and calibrating the initial position of the test vehicle when the test vehicle starts backing according to the distance between the tail of the test vehicle and the road side line.
In this embodiment, when the target dummy vehicle travels to the predetermined position in front of the entrance/exit of the parking space, the test vehicle receiving a reverse signal to start reversing further includes: and calibrating the preset position.
Calibrating the predetermined location comprises: setting the distance from the tail of the calibrated test vehicle to the road side line as L; setting the length of L to different values in a plurality of times; corresponding to different L lengths each time, when the target false car runs close to the test car and the image of the target false car is seen in the backing image screen of the test car, recording the distance from the front end of the target false car to the test car; and taking the distance as the preset position.
For different vehicle types, the view angle range and the arrangement form of the reversing image camera are different, so the preset position needs to be calibrated, and in order to ensure the accuracy of the evaluation result, the calibration methods of different vehicle types need to be the same.
In this embodiment, the corresponding to each different L length includes, when the target vehicle is driven to approach the test vehicle and the image of the target vehicle is seen on the back image screen of the test vehicle, after recording the distance from the front end of the target vehicle to the test vehicle: starting a side and rear collision early warning function of the test vehicle in the process of backing; gradually increasing the distance value, and recording the distance value in real time; when the distance is increased to a certain value, the side and rear collision early warning function is not activated; and determining the distance value corresponding to the inactivated state as a critical distance value.
In this embodiment, the critical distance value is the basis for determining the distance between the target vehicle and the test vehicle, and the effect of activating the RTA function is the best. Otherwise, the RTA function is evaluated according to the critical distance, and the performance of the RTA function can be objectively and quantitatively evaluated.
In addition, the inventor finds that the scanning range of most vehicles with RTA function, rear radar or image sensor is a sector area, and when the scanning range exceeds the sector area, the RTA function may be affected, so that recording the critical value of the predetermined position (i.e. the critical distance value) may clearly show the performance of the system, and the critical distance value is an important reference for evaluating the RTA function of the vehicle. Therefore, the critical distance value is an important reference for evaluating the performance of the vehicle RTA function, and is a threshold for defining whether the vehicle RTA function is activated or not, and for a certain vehicle type, if the value is too large, the vehicle type alarms too early, and more RTA false triggers are generated; if the value is too small, the RTA function of the vehicle type gives an alarm too late, and danger is brought.
The embodiment of the invention can further objectively and quantitatively evaluate the strength of the RTA function by taking the critical distance value as a quality index for evaluating the RTA performance, and has important reference significance.
In this embodiment, the length of L is set to 1m, 2m, 3m, 4m, or 5 m.
In the embodiment, the running speed of the target false vehicle is set to be 10km/h, 20km/h or 30 km/h.
It can be understood that, in order to ensure the accuracy of the evaluation result, the predetermined position is calibrated corresponding to different speed values respectively under the condition that each L value is not changed.
And respectively recording corresponding critical distance values corresponding to different L values, wherein the critical distance values are marked as S, the S is a variable parameter according to different vehicle types, and a table can be drawn for recording during specific evaluation.
In this embodiment, the method further includes: and evaluating the vehicle collision early warning function performance according to the critical distance value.
As shown in fig. 3, in this embodiment, as an optional embodiment, the preset test scenario further includes: and a reference vehicle is arranged on at least one side of the parking space, the orientation of the reference vehicle is consistent with that of the test vehicle, and the reference vehicle is used for shielding the rear side sight and/or images and/or sound acquisition signals of the test vehicle.
It can be understood that, a vehicle with an RTA function will usually have information acquisition devices such as a radar installed on one side of the vehicle, and in order to evaluate the RTA function performance of the vehicle in a working condition where the radar is shielded by an obstacle, a reference vehicle is installed on one side of the vehicle. The distance between the reference vehicle and the test vehicle can be freely set according to the situation, and preferably, the distance between the reference vehicle and the test vehicle in the parking space is set to be 0.3 m.
Referring to fig. 2, for clearly illustrating the specific calibration process and effect of the predetermined position according to the embodiment of the present invention, a detailed description will be given with reference to a specific working condition as follows:
parking the reference vehicle in alignment with the test vehicle; setting the distance between the tail part of the test vehicle and the tail part of the test vehicle, which is close to the test vehicle, of the test vehicle as L; setting the length of the L to be 1m in times, corresponding to the length of the L, recording a first length value of the target false car to a preset position of the test car when the target false car runs close to the test car and an image of the target false car is seen in a reversing image screen of the test car, and recording the first length value as S0; gradually increasing the length of S0, wherein the increase is marked as Delta S, and keeping the value of L unchanged during each test; when the target false vehicle passes through the position S0+ n delta S, triggering the test vehicle to reverse, and judging whether the RTA function is in an activated state in the reversing process; when the S is increased to a certain value and the RTA function is in an inactivated state after the test vehicle backs at the position, recording the S value at the moment, wherein the S value is a critical distance value, namely when the target dummy vehicle drives to the position which is S relative to the distance of the test vehicle, if the RTA is activated, the RTA is in an optimal state, problems can occur in early or late activation, and the performance of the RTA function can be well evaluated according to the problem as an evaluation basis.
In this embodiment, the calibrating the predetermined position further includes: changing the front and back relative positions of the reference vehicle and the test vehicle, wherein the relative position is marked as X; monitoring whether a vehicle collision early warning function is in an activated state after the test vehicle backs when the reference vehicle is at different positions and the preset position of the target false vehicle is changed in real time;
and when the collision early warning function is not activated after the test vehicle is monitored to back up, calibrating the position of the corresponding target false vehicle relative to the test vehicle as the preset position.
The calibration of the predetermined position is actually to determine the critical distance value, and the performance of the RTA function is evaluated according to whether the target vehicle is at the optimum distance from the test vehicle, if so, the RTA function is activated best, and if not, the RTA function is activated next too early or too late. In the embodiment, in order to improve the evaluation accuracy under various working conditions, the influence degree on the RTA performance of the vehicle under the situation that the obstacle blocks the relevant signal acquisition equipment of the test vehicle can be truly evaluated by changing the relative position of the reference vehicle and the test vehicle and recording the corresponding S value.
The embodiment of the invention provides a test evaluation method under the working condition that a reference vehicle shields visual or sound signals at the side of a test vehicle, the test is made through simulating the scene, the critical distance value corresponding to RTA activation is obtained according to the test, and the RTA functional performance under the working condition can be truly and objectively evaluated according to the critical distance value.
The embodiment of the invention also provides an experimental device essential for testing the early warning function of the vehicle, which can be used for testing the early warning function of various vehicles, and comprises a tray 1, wherein the tray comprises: truckle 11, truss structure 12 and mask 13, truckle 11 is fixed in on the truss structure 12, truss structure 12 is formed by many tubular metal resonator intersection welding be equipped with mounting hole 14 on the tubular metal resonator (the black dot on the tubular metal resonator that shows in the figure 4 indicates), mask 13 passes through mounting hole 14 is fixed on truss structure 12.
In this embodiment, it can be understood that the mask 13 is a surface contacting with the tire of the test vehicle, and therefore, the surface is required to be smooth and burr-free, so that a sharp object can be prevented from pricking the tire and damaging the tire. In addition, because the skin 13 is secured to the truss structure 12, it is desirable that the shape and configuration of the inner surface (the surface in contact with the truss structure) of the skin 13 conform to the truss structure 12 to make the combination more compact and robust. The skin 13 and the truss structure 12 may be fastened together by means of a snap-fit or may be fastened by means of bolts, as mentioned above, since sharp objects are to be avoided on the surface of the skin 13, when fastening by means of bolts, countersunk bolts are used, so that they do not expose the surface of the skin 13. The metal pipe can be an aluminum pipe, a steel pipe, a cast iron pipe or an aluminum alloy pipe.
According to the tray equipment for the vehicle collision early warning function test, the tray is integrally arranged into the truss structure 12, the internal pulling and pressing forces in the horizontal direction of the truss structure 12 realize self balance, the stability of the whole structure can be enhanced, and the tray equipment is good in structural stability and can be used for the vehicle collision early warning function test.
As shown in fig. 5 and 6, in the present embodiment, as a preferred embodiment, the truss structure 12 includes a central truss 121 and an edge truss 122, the central truss 121 is a rectangular grid structure formed by welding a plurality of aluminum pipes perpendicularly and crosswise, the edge truss 122 is disposed to be inclined downward at an angle relative to the central truss 121, and the edge truss 122 is composed of a plurality of aluminum pipes welded to the periphery of the central truss 121.
It can be understood that the longer side of the rectangle is the advancing direction of the balloon dummy car as the interference car, and the shorter side is the side of the test car rolled in the backing direction.
In this embodiment, the central truss 121 and the edge truss 122 are set to be an inclined angle structure, so that the test vehicle in the collision early warning function test can be easily inverted on the tray when backing up, thereby facilitating the vehicle early warning function test.
In the present embodiment, the caster 11 is a directional caster as a preferred embodiment. Therefore, the tray device can be kept to move along a straight line in the drawing process, so that the early warning scene of a vehicle which runs straight behind the vehicle can be truly simulated.
In this embodiment, as an optional embodiment, the inclination angle of the edge truss 122 relative to the central truss 121 is 15-35 °.
In this embodiment, as an optional embodiment, a transition arc surface is disposed at a connection 123 between the edge truss 122 and the central truss 121.
In the embodiment, the transition arc surface is arranged at the joint of the edge truss 122 and the central truss 121, so that a test vehicle can stably drive into the tray from the slope surface of the edge truss in the test process, and the risk of damaging tires of the test vehicle by sharp corners at the joint is avoided.
In this embodiment, as an optional embodiment, the metal pipe feet of two adjacent surfaces in the edge truss 122 are connected by a bottom edge beam to form a triangular structure 124.
In the embodiment, the metal pipe feet of two adjacent surfaces of the edge truss 122 are connected together by the bottom side cross beam to form a triangular structure, so that the stability of the overall structure of the tray equipment can be further enhanced according to the characteristic that the triangular structure has stability.
In this embodiment, as an optional embodiment, the periphery of the upper surface of the mask 13 is provided with a hook and loop fastener or an adhesive for fixing the balloon false car.
It will be appreciated that the balloon dummy is used to simulate a vehicle behind when the vehicle is parked out of the garage.
As shown in fig. 7, in this embodiment, as an optional embodiment, the tray device further includes a pulling self-breaking device 2, and the pulling self-breaking device includes: connecting plate 21, first end couple 22, sucking disc 23 and second end couple 24, first end couple 22 is fixed in connecting plate 21 one side, sucking disc 23 adsorbs in connecting plate 21 opposite side, second end couple 24 is in the same place with sucking disc 23 end connection, it passes through from disconnecting means 2 first end couple 22 with tray tip flexible line is connected.
It can be understood that, after the test car backs a car and excessively leads to running over the developments tray, if the tractor did not stop in time, traction force still can pass to the tray through the flexible line, and the tray can continue to advance and lead to dragging the test car wheel, probably causes the injury to the tire or the wheel of test car, and if test car or test equipment damage, then can influence efficiency of software testing, causes and can't accomplish a series of functional test of test car on time.
This embodiment is through connecting on the tray and pull from breaker 2, when the developments tray was walked, speed drops to 0 basically, if the tractor continues to advance this moment, can throw off from the connecting plate by oneself from breaker through the sucking disc, make the haulage rope disconnection, the tray has lost traction force like this, the possibility of having avoided taking place to pull the test car wheel, thereby avoided causing the risk of injury to test car tire or wheel, can guarantee the efficiency of software testing and accomplish the functional test of test car on time.
As shown in fig. 8, in this embodiment, preferably, bayonets are disposed on the end surfaces of the tray covering 13, two ends of the flexible wire are provided with buckles, the flexible wire passes through the first end portion hook 22 and is clamped into the bayonets through the buckles, and when the flexible wire is in a straightened state, a connection line of the flexible wire and the bayonets on the end surfaces of the covering forms an isosceles triangle with a bottom foot of 30 °. The arrangement can ensure that an isosceles triangle formed by the traction flexible lines has stability and can keep the balance effect of force in the process of drawing the tray equipment, so that the fixed trajectory line can be kept as much as possible in the drawing process of the balloon vehicle fixed on the flexible lines, the scene in the real vehicle parking process can be simulated really, and the effectiveness of the vehicle early warning function test can be improved.
The embodiment of the tray equipment for testing the vehicle collision early warning function is used for supporting a carrier gas ball false vehicle, and the tray equipment is pulled by a traction mechanism to advance and pass behind a test vehicle so as to simulate the real state of an interference vehicle at the rear side of the vehicle during parking, and therefore the tray equipment can be used as experimental equipment for testing the collision early warning function of the vehicle.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A vehicle collision early warning function evaluation method is characterized by comprising the following steps: the method specifically comprises the following steps:
placing a test vehicle with a collision early warning function in a preset test scene; the preset test scene comprises: at least one parking space for parking the test vehicle; the target false car is fixed on the tray equipment and is positioned on a road crossed with the extension lines of the inlet and the outlet of the parking space;
the target false vehicle travels straight along the road from the initial position to the parking space;
when the target dummy vehicle drives to a preset position in front of the entrance and exit of the parking space, the test vehicle receives a reversing signal to start reversing;
collecting running dynamic information of a test vehicle and a target false vehicle; the driving dynamic information comprises driving videos and GPS data;
evaluating a vehicle collision early warning function according to the running dynamic information;
the test vehicle comprises the following components before receiving a reverse signal and starting reverse: calibrating an initial position of the test vehicle when the test vehicle starts backing according to the distance between the tail of the test vehicle and the road side line;
when the target dummy vehicle drives to the preset position in front of the entrance and exit of the parking space, the step that the test vehicle receives a reversing signal to start reversing further comprises the following steps: calibrating the preset position;
calibrating the predetermined location comprises:
setting the distance from the tail of the calibrated test vehicle to the road side line as L;
setting the length of L to different values in a plurality of times;
corresponding to different L lengths each time, when the target false car runs close to the test car and the image of the target false car is seen in the backing image screen of the test car, recording the distance from the front end of the target false car to the test car;
taking the distance from the front end of the target false car to the test car as the preset position;
the corresponding different L length every time, when the target false car is driven to be close to the test car, and when the image of the target false car is seen in the reversing image screen of the test car, the recording of the distance between the front end of the target false car and the test car comprises the following steps:
starting a side and rear collision early warning function of the test vehicle in the process of backing;
gradually increasing the distance value, and recording the distance value in real time;
when the distance is increased to a certain value, the side and rear collision early warning function is not activated;
and determining the distance value corresponding to the non-activated state as a critical distance value.
2. The vehicle collision warning function evaluation method according to claim 1, characterized in that: the driving video comprises: the tail part of the test vehicle and the video of the tail part of the test vehicle facing the road sideline, the video of the target false vehicle driving towards the parking space and the video of the instrument panel indication information;
the GPS data includes: the real-time position of the test vehicle, the deceleration, the yaw angle, the real-time position of the target vehicle dummy and/or the relative distance to a rear position of the test vehicle on the side close to the target vehicle dummy.
3. The vehicle collision warning function evaluation method according to claim 1, characterized in that: the preset test scenario further includes: setting vehicle distance scale marks on the road side;
and determining the relative distance between the target dummy car and the rear position of the test car close to the target dummy car side according to the car distance scale markings, wherein the relative distance comprises the scale value of the car distance scale markings corresponding to the real-time position of the target dummy car.
4. The vehicle collision warning function evaluation method according to claim 1, characterized in that: the preset test scenario further comprises: and a reference vehicle is arranged on at least one side of the parking space, the orientation of the reference vehicle is consistent with that of the test vehicle, and the reference vehicle is used for shielding the rear side sight and/or images and/or sound acquisition signals of the test vehicle.
5. The vehicle collision warning function evaluation method according to claim 4, characterized in that: the distance between the reference vehicle and the test vehicle in the parking space is set to be 0.3 m;
calibrating the predetermined location further comprises: changing the front and back relative positions of the reference vehicle and the test vehicle, wherein the relative position is marked as X;
monitoring whether a vehicle collision early warning function is in an activated state after the test vehicle backs when the reference vehicle is at different positions and the preset position of the target false vehicle is changed in real time;
and when the collision early warning function is not activated after the test vehicle is monitored to back up, calibrating the position of the corresponding target false vehicle relative to the test vehicle as the preset position.
6. A tray device used in the vehicle collision warning function evaluation method according to any one of claims 1 to 5, characterized in that: including truckle, truss structure and mask, the truckle is fixed in truss structure is last, truss structure is formed by many tubular metal resonator cross welding, be equipped with the mounting hole on the tubular metal resonator, the mask passes through the mounting hole to be fixed on truss structure, truss structure includes central truss and marginal truss, central truss is the rectangle grid structure that many aluminum pipes cross welding become perpendicularly, marginal truss for central truss is the setting of an angle downward sloping, marginal truss comprises many welding in central truss peripheral aluminum pipes.
7. The tray apparatus according to claim 6, wherein: the tray apparatus further comprises a pulling self-disconnect device comprising: connecting plate, first end couple, sucking disc and second end couple, first end couple is fixed in connecting plate one side, the sucking disc adsorbs in the connecting plate opposite side, second end couple is in the same place with sucking disc end-to-end connection, it passes through from the disconnecting means first end couple with tray tip flexible line is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928764.5A CN109269813B (en) | 2018-08-15 | 2018-08-15 | Vehicle collision early warning function evaluation method and tray equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928764.5A CN109269813B (en) | 2018-08-15 | 2018-08-15 | Vehicle collision early warning function evaluation method and tray equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109269813A CN109269813A (en) | 2019-01-25 |
| CN109269813B true CN109269813B (en) | 2020-11-13 |
Family
ID=65153492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810928764.5A Active CN109269813B (en) | 2018-08-15 | 2018-08-15 | Vehicle collision early warning function evaluation method and tray equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109269813B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617972A (en) * | 2019-08-22 | 2019-12-27 | 武汉理工大学 | A false car chassis structure of target for intelligent automobile bump test |
| CN110646214A (en) * | 2019-08-22 | 2020-01-03 | 武汉理工大学 | Reconfigurable body structure of target false car for crash test and assembling method |
| CN112834234A (en) * | 2019-11-25 | 2021-05-25 | 武汉理工大学 | Method and system for judging collision of target false car |
| CN111189650A (en) * | 2020-01-22 | 2020-05-22 | 长安大学 | Unmanned vehicle cooperative driving capability test system and test method |
| CN111397796B (en) * | 2020-04-08 | 2022-02-01 | 新石器慧通（北京）科技有限公司 | Collision test method, device and system |
| CN111862556A (en) * | 2020-05-27 | 2020-10-30 | 中汽数据有限公司 | Collision early warning function evaluation method based on driver behavior analysis |
| CN112537267B (en) * | 2020-11-26 | 2022-12-20 | 安徽江淮汽车集团股份有限公司 | Method, device, storage medium and device for testing reversing early warning performance |
| CN113484040A (en) * | 2021-06-21 | 2021-10-08 | 上汽通用五菱汽车股份有限公司 | Emergency lane keeping function test method, device and system and storage medium |
| CN113848072B (en) * | 2021-09-26 | 2024-05-10 | 上汽通用五菱汽车股份有限公司 | Anti-collision function test system, method and device and readable storage medium |
| CN114323677A (en) * | 2021-12-13 | 2022-04-12 | 一汽奔腾轿车有限公司 | Real vehicle test system and method for vehicle emergency avoidance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR102013003500A2 (en) * | 2013-02-15 | 2015-07-14 | Luís André Zattar | Electronic set of sensing, data processing, communication and validation of vehicle driving practice examination |
| CN104977171B (en) * | 2015-07-01 | 2018-09-21 | 奇瑞汽车股份有限公司 | The device and its control method of system controller are monitored for check frequency |
| CN106114494B (en) * | 2016-07-21 | 2019-07-30 | 浙江吉利汽车研究院有限公司 | A kind of reversing auxiliary collision avoidance system and method for vehicle |
-
2018
- 2018-08-15 CN CN201810928764.5A patent/CN109269813B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| Design and Evaluation of a Prototype Rear Obstacle Detection and Driver Warning System;Robert E. Llaneras 等;《HUMAN FACTORS》;20150206;第47卷(第1期);第199-215页 * |
| The Effectiveness of a Rearview Camera and Parking Sensor System Alone and Combined for Preventing a Collision With an Unexpected Stationary or Moving Object;David G. Kidd 等;《HUMAN FACTORS》;20150630;第57卷(第4期);第689-700页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109269813A (en) | 2019-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109269813B (en) | Vehicle collision early warning function evaluation method and tray equipment | |
| CN107161097B (en) | Vehicle running intelligent security system based on Beidou Navigation System | |
| CN110264742B (en) | Vehicle-mounted information monitoring device suitable for expressway and warning method thereof | |
| CN111619447A (en) | Dynamic monitoring and early warning system and method for large vehicle | |
| JP2002022439A (en) | Outside monitor of car having failsafe function | |
| CN112977253B (en) | Two-way safety auxiliary system for vehicle | |
| CN204309672U (en) | A kind of anti-car rear-end prior-warning device based on image recognition | |
| CN104933894B (en) | Traffic density sensitivity selector | |
| CN205405894U (en) | Safe vehicle distance alarm system based on road environment | |
| WO2022062000A1 (en) | Driver assistance method based on transparent a-pillar | |
| CN110626259A (en) | Triangular warning frame and collision early warning method thereof | |
| KR102008398B1 (en) | Apparatus and method for notifying collision risk on the road | |
| CN109383371A (en) | A kind of ADAS product driveway deviation alarming system | |
| WO2005015260A1 (en) | Method and device for the detection of objects moving approximately in the same spatial direction as a vehicle | |
| CN203165232U (en) | Speed limit board automatic identification apparatus based on machine vision | |
| Ataelmanan et al. | Examination of lane changing duration time on expressway | |
| CN111572451A (en) | Detection device and vehicle | |
| JP2021092928A (en) | Road sign recognition device | |
| CN217640434U (en) | Entrance ultrahigh and ultralimit intelligent monitoring and control device | |
| CN108257390A (en) | A kind of limit for height alarm system | |
| CN217157480U (en) | Highway tunnel risk monitoring system based on people's car behavior analysis | |
| CN212289660U (en) | Detection device and vehicle | |
| CN116645778A (en) | Early warning monitoring system for highway construction | |
| CN215417017U (en) | Vehicle overspeed detection early warning system | |
| JP4178018B2 (en) | Collision experiment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240124 Address after: 300457 unit 402-4, building 6, West Financial Street, No. 52, Xincheng West Road, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee after: CATARC (TIANJIN) AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE Co.,Ltd. Country or region after: China Address before: 300457 TEDA MSD-B1-1907, 62 Second Avenue, Binhai New Area Development Zone, Tianjin Patentee before: CATARC (TIANJIN) AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE Co.,Ltd. Country or region before: China Patentee before: CHINA AUTOMOTIVE TECHNOLOGY AND RESEARCH CENTER Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240514 Address after: Room 1702, 17th Floor, Building 10, Zhongzhong Zhigu Industrial Park, No. 189, Section 2, Renmin East Road, Changsha County Economic and Technological Development Zone, Changsha City, Hunan Province, 410131 Patentee after: Hunan Yingxia Automotive Parts Manufacturing Co.,Ltd. Country or region after: China Address before: 300457 unit 402-4, building 6, West Financial Street, No. 52, Xincheng West Road, economic and Technological Development Zone, Binhai New Area, Tianjin Patentee before: CATARC (TIANJIN) AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |