A calibration device for AEB test dummy target equipment

Abstract

The present invention provides a calibration device for an AEB test prosthetic target device, which relates to the field of automobile testing technology, and mainly solves the technical problem that the prosthetic target is not calibrated and tested in the AEB test. The invention includes a calibration device, a test device, and a carrying device; the test device collects the RCS characteristics of the calibration device and the prosthetic target, and the test data of the prosthetic target; the calibration device calibrates the pre-position of the prosthetic target, and pre-calibrates the test device to confirm the RCS characteristic error caused by the current position of the calibration device and the test device and the surrounding environment; the carrying device carries the test device or the calibration device, and adjusts the position of the test device or the calibration device so that the test device and the calibration device are aligned with each other, so that the test device tests the prosthetic target at the pre-position. The present invention performs secondary calibration adjustment after the prosthetic target is damaged, which makes up for the problem that the existing equipment has insufficient identification basis, and also has the characteristics of high efficiency and reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile testing, and in particular to a calibration device for an AEB test dummy target device. Background Art

[0002] The automotive active safety technology (AEB) is mainly composed of three modules, including the control module (ECU), the distance measurement module, and the braking module. The core of the distance measurement module includes microwave radar, face recognition technology and video system, etc. It can provide safe, accurate and real-time images and road condition information of the road ahead. In the existing AEB tests, dummies and fake cars are often used for engineering verification and testing.

[0003] However, the test dummy car and test dummy are vulnerable parts in the AEB test project. After they are damaged, there is no identification and calibration device for their performance, which means they are in a blank state. The dummy car and dummy are necessary parts in the mandatory access standards. The dummy car and dummy need to be calibrated and calibrated regularly, but secondary calibration is not possible at home and abroad at this stage. In addition, due to the lack of detection equipment for the dummy car and dummy, when the dummy car and dummy are damaged, it is usually determined by the outside party whether they need to be replaced, which reduces the reliability of the test.

[0004] Therefore, testing equipment for dummy vehicles and dummies is necessary and valuable in AEB tests. Summary of the invention

[0005] One of the purposes of the present invention is to provide a calibration device for an AEB test dummy target device, which solves the technical problem of the prior art that no calibration test is performed on the dummy target in the AEB test. The preferred embodiment of the present invention can achieve many beneficial effects, as described below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A calibration device for an AEB test dummy target device of the present invention comprises: a calibration object device, a test device, and a bearing device;

[0008] The test device is used to collect RCS characteristics of the calibration device and the prosthetic target by transmitting and receiving electromagnetic waves, and also collect test data of the prosthetic target;

[0009] The calibration device is used to calibrate the pre-position of the prosthetic target and pre-calibrate the test device to confirm the RCS characteristic error caused by the current installation position of the calibration device and the test device and the surrounding environment, so that the prosthetic target can perform the AEB test at the pre-position;

[0010] The carrying device is used to carry the test device or the calibration device, and adjust the position state of the test device or the calibration device so that the positions of the test device and the calibration device are aligned with each other, and then the test device performs an AEB test on the prosthetic target at a preset position.

[0011] Furthermore, the bearing device includes a first bracket and a second bracket; the first bracket is sleeved with the second bracket; and the test device or calibration device is arranged on the first bracket.

[0012] Further, the first bracket includes a level ruler, a fixed crossbeam, a height adjustment hole, and an upper plane disposed at the upper end of the first bracket;

[0013] The second bracket includes a protrusion corresponding to the height adjustment hole, a leveling ball head, a leveling foot with a locking ring, and a base placed at the lower end of the second bracket;

[0014] The level rulers are two in number and are placed perpendicularly to each other on the upper plane, and are used to keep the test device or the calibration device in a horizontal position;

[0015] The fixed crossbeam is placed on one side of the first bracket and is used to fix the test device or the calibration device;

[0016] The height adjustment hole is provided on the support column of the first bracket; the protrusion is provided on the support column of the second bracket; the height adjustment hole and the protrusion are used to enable the first bracket and the second bracket to be sleeved after being telescoped;

[0017] The leveling ball head is fixedly connected to the bottom of the base at the lower end of the second bracket and is used in conjunction with a level ruler to adjust the position of the test device or the calibration device;

[0018] The leveling foot seat with the locking ring is used for sleeve connection, locking and leveling of the ball head.

[0019] Furthermore, the testing device is mounted on a fixed crossbeam of the bearing device through adjusting studs and a flat plate with holes.

[0020] Furthermore, the testing device includes a radar or microwave induction sensor for detecting the calibration device and the pseudo target using electromagnetic waves.

[0021] Furthermore, the calibration object device includes a corner reflector, which is mounted on a fixed beam of the bearing device through a leveling bolt or placed on an upper plane at the upper end of the first bracket.

[0022] Furthermore, the corner reflectors include at least two.

[0023] Furthermore, the present invention also includes a fixing bracket for stably carrying the prosthetic target and placing it in a pre-set position for testing;

[0024] The fixed bracket includes a bearing plate, a saddle, a drag block and edge materials;

[0025] The saddle is fixedly arranged on the bearing support plate and is used for connecting the prosthetic target;

[0026] The dragging block is fixedly arranged on the bearing support plate to facilitate dragging of the fixed bracket;

[0027] The edge material wraps around the edge of the carrying pallet.

[0028] Furthermore, the edge material is a wave absorbing material.

[0029] Furthermore, the present invention also includes a test system instrument, which is connected to the test device and is used to correct the RCS characteristic error between the calibration device and the test device so as to analyze the test data of the prosthetic target.

[0030] The calibration device of an AEB test dummy target device provided by the present invention has at least the following beneficial technical effects:

[0031] The present invention consists of a test device, a calibration device, a fixed bracket and a test system instrument. The calibration device and the test device are aligned by a carrying device, and then the pre-position of a prosthetic target is calibrated by the calibration device, and the test device is pre-calibrated. Finally, the test device performs an AEB test on the prosthetic target placed in the pre-position.

[0032] In the AEB test, the characteristic technical status of the prosthetic target (such as simulated fake car, simulated pedestrian, etc.) needs to be regularly tested. Therefore, the present invention can perform secondary calibration adjustment after the prosthetic target is damaged, making up for the problem that the existing equipment has insufficient identification basis. The present invention can also inspect and test the prosthetic target more efficiently and reliably.

[0033] The present invention can be used for detecting and studying target characteristics, such as radar reflection characteristics of actual vehicles, pedestrians and other traffic participants, to facilitate comparative study of equipment characteristics and actual traffic participant characteristics, thereby improving test accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1It is a schematic diagram of the structure of the calibration object device and the carrying device of the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the testing device and the carrying device of the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of the fixing bracket of the present invention;

[0038] In the figure, 1-calibration device, 2-test device, 3-carrying device, 4-fixed bracket, 5-test system instrument;

[0039] 11-corner reflector, 12-leveling bolt;

[0040] 21-adjusting stud, 22-plate with holes;

[0041] 31-first bracket, 32-second bracket;

[0042] 311-level ruler, 312-fixed beam, 313-height adjustment hole, 314-upper plane;

[0043] 321-protrusion, 322-leveling ball head, 323-leveling foot with locking ring, 324-base;

[0044] 41 - load-bearing pallet, 42 - saddle, 43 - drag block, 44 - edge material. DETAILED DESCRIPTION

[0045] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0046] See also Figure 1 and Figure 2 , the present invention is a calibration device for an AEB test dummy target device, which comprises: a calibration object device 1, a test device 2, and a bearing device 3;

[0047] The test device 2 is used to collect RCS characteristics of the calibration device 1 and the prosthetic target by transmitting and receiving electromagnetic waves, and also collect test data of the prosthetic target;

[0048] The calibration device 1 is used to calibrate the pre-position of the prosthetic target and pre-calibrate the test device 2, confirm the RCS characteristic error caused by the current installation position of the calibration device 1 and the test device 2 and the surrounding environment, so that the prosthetic target can be tested for AEB at the pre-position;

[0049] The carrying device 3 is used to carry the test device 2 or the calibration device 1, and adjust the position state of the test device 2 or the calibration device 1 so that the positions of the test device 2 and the calibration device 1 are aligned with each other, and then the test device 2 performs an AEB test on the prosthetic target at a preset position.

[0050] It should be noted that the prosthetic targets include fake cars simulating cars, dummies simulating pedestrians, etc.

[0051] The calibration device 1 and the test device 2 of the present invention are both installed on the carrying device 3, and perform self-position calibration and mutual position alignment; secondly, the calibration device 1 calibrates the pre-position of the dummy target, and pre-calibrates the test device 2, calibrating the position and RCS characteristic error; then, the dummy target is in the pre-position, and the test device 2 performs an AEB test on the dummy target. The present invention realizes a test calibration device for a dummy target for AEB, which can help the prior art to detect the front target through radar and other devices, and play an auxiliary role in the perception ability of the forward collision warning system FCW and the automatic braking system AEB. In addition, the present invention can regularly detect the characteristic technical status of the dummy target (such as a simulated fake car, simulated pedestrian, etc.), and perform secondary calibration adjustment after the dummy target is damaged, so as to make up for the problem that the existing equipment has no insufficient calibration basis; the present invention is also used for the detection and research of target characteristics, such as the radar reflection characteristics of actual vehicles, pedestrians and other traffic participants, which is convenient for comparing the characteristics of the equipment with the characteristics of the actual traffic participants, and improving the accuracy of the test.

[0052] The carrying device 3 includes a first bracket 31 and a second bracket 32 ​​; the first bracket 31 and the second bracket 32 ​​are sleeved together; the testing device 2 or the calibration device 1 is disposed on the first bracket 31 .

[0053] The first bracket 31 includes a level ruler 311, a fixed crossbeam 312, a height adjustment hole 313, and an upper plane 314 disposed at the upper end of the first bracket;

[0054] The second bracket 32 ​​includes a protrusion 321 corresponding to the height adjustment hole, a leveling ball head 322, a leveling foot 323 with a locking ring, and a base 324 disposed at the lower end of the second bracket;

[0055] There are two level rulers 311, which are placed perpendicularly to each other on the upper plane 314 and are used to keep the test device 2 or the calibration device 1 in a horizontal position;

[0056] A fixed crossbeam 312 is disposed on one side of the first bracket 31 and is used to fix the test device 2 or the calibration device 1; wherein the number of fixed crossbeams 312 can be multiple;

[0057] The height adjustment hole 313 is provided on the support column of the first bracket 31; the protrusion 321 is provided on the support column of the second bracket 32; the height adjustment hole 313 and the protrusion 321 are used to make the first bracket 31 and the second bracket 32 ​​telescope and then be connected;

[0058] A leveling ball head 322 is fixedly connected to the bottom of the base 324 at the lower end of the second bracket and is used in conjunction with the level ruler 311 to adjust the position of the test device 2 or the calibration device 1;

[0059] The leveling foot seat 323 with a locking ring is used for sleeve connection, locking and leveling the ball head 322.

[0060] It should be noted that:

[0061] The height adjustment hole 313 and the protrusion 321 are respectively disposed on the first bracket 31 and the second bracket 32. When the first bracket 31 or the second bracket 32 ​​is extended and retracted and the height is determined, the protrusion 321 is stuck in the height adjustment hole 313 to make the first bracket 31 and the second bracket 32 ​​be sleeved.

[0062] The carrying device 3 is used in coordination with the level ruler 311, the leveling ball head 322 and the leveling foot seat 323 with a locking ring, wherein the leveling ball head 322 can slide in the leveling foot seat 323 with a locking ring. The whole carrying device 3 and the test device 2 or the calibration device 1 are suitable for any ground and are in a stable horizontal state. For example, when the carrying device 3 is on the ground or plane with a certain tilt angle, the level ruler 311 uses the principle of liquid level to directly display the angular displacement with a level bubble to measure the deviation degree of the relative horizontal position, plumb position and tilt position of the measured surface. Then, by adjusting the leveling ball head 322, the level ruler 311 and the carrying device 3 are in a horizontal state, and then the leveling ball head 322 is sleeved and locked by the leveling foot seat 323 with a locking ring, so that the level ruler 311 and the carrying device 3 remain in a horizontal state.

[0063] The carrying device 3 of the present invention carries the test device 2 or the calibration device 1, and adjusts the positions of the test device 2 and the calibration device 1 to be in a horizontal state, so as to align the positions of the test device 2 and the calibration device 1 with each other, and also enables the test device 2 to perform an AEB test on a prosthetic target at a pre-set position. Therefore, the carrying device 3 has the characteristics of simple structure, convenient operation, and practicality.

[0064] The testing device 2 is mounted on the fixed crossbeam of the carrying device through the adjusting studs 21 and the plate with holes 22 .

[0065] It should be noted that the perforated plate 22 is mounted on the fixed beam 312 and is parallel to the side of the first bracket 31. The adjusting stud 21 corresponds to the hole of the perforated plate 22 and is threadedly connected to the perforated plate 22 for placing the test device 2 and allowing the test device 2 to extend and retract.

[0066] The testing device 2 includes a radar or microwave induction sensor for detecting the calibration device and the dummy target using electromagnetic waves.

[0067] The principle is based on microwave radar technology. Microwave radar consists of a microwave transmitter and a microwave receiver. Generally, microwaves in the X-band or K-band are used as the detection signal source. Due to the high penetration of microwaves, microwave radiation is unlikely to be affected by the natural environment and cause false alarms when used outdoors. It has the characteristics of long detection distance, stable operation, and very simple debugging.

[0068] The calibration object device 1 includes a corner reflector 11 , which is mounted on a fixed crossbeam 312 of the bearing device 3 or placed on an upper plane 314 at the upper end of the first bracket through a leveling bolt 12 .

[0069] The corner reflector 11 includes at least two, or the corner reflectors 11 are in combination.

[0070] Preferably, the corner reflector 11 is a triangular pyramid-shaped corner reflector.

[0071] It should be noted that holes corresponding to the leveling bolts 12 are provided on the fixed crossbeam 312 or on the upper plane 314 disposed on the upper end of the first bracket, so that the corner reflector 11 can be mounted on the carrying device 3. Therefore, the corner reflector 11 can be easily replaced and leveled.

[0072] The corner reflector 11 reflects electromagnetic waves, so that the testing device 2 receives the feedback electromagnetic waves and determines the position, RCS characteristics and RCS characteristic errors of the calibration object device 1 according to the feedback electromagnetic waves.

[0073] Method of using the calibration device 1:

[0074] 1. The calibration device 1 needs to confirm the types and combinations of corner reflectors 11 of various RCS values ​​in advance, and select the ones that cover the measurement range of the test device. The corner reflector 11 is installed on the fixed beam 312 of the bearing device 3 or placed on the upper plane 314 at the upper end of the first bracket through the leveling bolts 12.

[0075] 2. Adjust the lateral position of the placement bearing device 3 to confirm the lateral position of the calibration object device 1 and pre-adjust the corresponding point of the calibration object device 1 and the corresponding point of the test device 2.

[0076] 3. Pre-adjust the height of the corner reflector 11 combination through the height adjustment hole 312, clamp and lock the height adjustment hole 313 with the protrusion 321 to determine the height, then adjust the supporting device 3 through the leveling ball head 322 to make the level ruler 311 meet the actual test level requirement, and prepare for testing after locking the leveling ball head 322 through the leveling foot 323 with a locking ring.

[0077] 4. The test system instrument 5 analyzes the reading results of the test device 2, confirms the current installation positions of the calibration device 1 and the test device 2 and the RCS characteristics and RCS characteristic errors of the calibration device 2 in the surrounding environment, and performs reset and self-calibration through the test system instrument 5.

[0078] See also Figure 3 , the present invention further comprises a fixing bracket 4, which is used to stably carry the prosthetic target and is placed in a pre-set position for testing;

[0079] The fixed support 4 includes a bearing plate 41, a saddle 42, a drag block 43 and an edge material 44;

[0080] The saddle 42 is fixedly disposed on the bearing support plate 41 and is used for connecting the prosthetic target;

[0081] The dragging block 43 is fixedly arranged on the carrying support plate 41, and is used to facilitate dragging of the fixed bracket;

[0082] The edge material 44 wraps around the edge of the carrying pallet 41 .

[0083] It should be noted that the saddle is provided with a connecting hole and a slide groove, and the prosthetic target itself is provided with a center of gravity slide groove insertion clamping structure, so the prosthetic target can be inserted into the center of gravity slide groove to clamp the slide groove and lock the prosthetic target through the connecting hole.

[0084] The bearing support plate 41 is a high-strength titanium alloy frame structure, which improves the supporting rigidity and reduces the weight of the bearing support plate 41.

[0085] The edge material 44 is an absorbing material. The absorbing material can absorb or significantly reduce the electromagnetic wave energy projected onto its surface, prevent the bearing plate 41 from generating reflected interference waves, and other electromagnetic waves in the environment from interfering with the test results. In addition to requiring the absorbing material to have a high absorption rate of electromagnetic waves in a wide frequency band, it also has the properties of light weight, temperature resistance, moisture resistance, and corrosion resistance.

[0086] The present invention further comprises a test system instrument 5, which is connected to the test device 2 and is used to correct the RCS characteristic error between the calibration device 1 and the test device 2, so as to analyze the test data of the prosthetic target.

[0087] Method of use of the present invention:

[0088] 1. Use the carrying device 3 to level and install the test device 2 or the calibration device 1, so that the test device 2 or the calibration device 1 is at the AEB test level requirement, and confirm that the test device 2 is normally connected to the calibration device 1 and the test system instrument 5 respectively.

[0089] 2. Use the calibration device 1 to calibrate the pre-position of the prosthesis target, and pre-calibrate the test device 2 to confirm the installation positions of the current test device 2 and the calibration device 1, as well as the RCS characteristics and errors of the calibration object in the surrounding environment, and then reset and self-correct through the test system instrument 5.

[0090] 3. Place the fixing bracket 4 stably connected to the prosthetic target and the prosthetic target in a preset position, start the AEB test of the prosthetic target by the test device 2, and output the test result by the test system instrument 5.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A calibration device for an AEB test dummy target device, characterized in that: include: Calibration device, test device, and load-bearing device; The test device is used to collect RCS characteristics of the calibration device and the prosthetic target by transmitting and receiving electromagnetic waves, and also collect test data of the prosthetic target; The calibration device is used to calibrate the pre-position of the prosthetic target and pre-calibrate the test device to confirm the RCS characteristic error caused by the current installation position of the calibration device and the test device and the surrounding environment, so that the prosthetic target can perform the AEB test at the pre-position; The carrying device is used to carry the test device or the calibration device, and adjust the position state of the test device or the calibration device so that the positions of the test device and the calibration device are aligned with each other, and then the test device performs an AEB test on the prosthetic target at a preset position; the carrying device includes a first bracket and a second bracket; the first bracket is sleeved with the second bracket; the test device or the calibration device is arranged on the first bracket; The first bracket includes a level ruler, a fixed crossbeam, a height adjustment hole, and an upper plane disposed at the upper end of the first bracket; The second bracket includes a protrusion corresponding to the height adjustment hole, a leveling ball head, a leveling foot with a locking ring, and a base placed at the lower end of the second bracket; The level rulers are two in number and are placed perpendicularly to each other on the upper plane, and are used to keep the test device or the calibration device in a horizontal position; The fixed crossbeam is placed on one side of the first bracket and is used to fix the test device or the calibration device; The height adjustment hole is provided on the support column of the first bracket; the protrusion is provided on the support column of the second bracket; the height adjustment hole and the protrusion are used to enable the first bracket and the second bracket to be sleeved after being telescoped; The leveling ball head is fixedly connected to the bottom of the base at the lower end of the second bracket and is used in conjunction with a level ruler to adjust the position of the test device or the calibration device; The leveling foot with the locking ring is used for sleeve connection, locking and leveling the ball head; The calibration object device comprises a corner reflector, which is mounted on a fixed beam of the bearing device or placed on an upper plane at the upper end of the first bracket through a leveling bolt; The calibration device also includes a test system instrument, which is connected to the test device and is used to correct the RCS characteristic error between the calibration device and the test device so as to analyze the test data of the prosthetic target.

2. The calibration device according to claim 1, characterized in that: The testing device is mounted on the fixed crossbeam of the carrying device through adjusting studs and a flat plate with holes.

3. The calibration device according to claim 2, characterized in that: The testing device includes a radar or microwave induction sensor for detecting the calibration device and the dummy target using electromagnetic waves.

4. The calibration device according to claim 1, characterized in that: The corner reflectors include at least two.

5. The calibration device according to claim 1, characterized in that: Also included is a fixing bracket for stably carrying the prosthetic target and placing it in a pre-position for testing; The fixed bracket includes a bearing plate, a saddle, a drag block and edge materials; The saddle is fixedly arranged on the bearing support plate and is used for connecting the prosthetic target; The dragging block is fixedly arranged on the bearing support plate to facilitate dragging of the fixed bracket; The edge material wraps around the edge of the carrying pallet.

6. The calibration device according to claim 5, characterized in that: The edge material is a wave absorbing material.

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