Intelligent automobile ADAS system foresight camera EMC test platform

Abstract

The utility model discloses an intelligent automobile ADAS system foresight camera EMC test platform, which belongs to the technical field of intelligent automobile test and comprises a fixed support, a display unit, an adjusting unit and a central control unit. The adjusting unit is installed on a to-be-tested vehicle through the fixing support. A display unit is arranged on the adjusting unit, and the adjusting unit is used for adjusting the angle and the position of the display unit; the display unit is used for displaying a simulation scene; the central control unit is at least used for controlling execution of the display unit. The intelligent automobile ADAS system foresight camera EMC test platform provided by the utility model can effectively solve the problems that an existing foresight camera EMC test platform has relatively large influence on the space of a test site, the calibration process is tedious, the calibration precision is low, and the cost is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent vehicle testing, in particular to an EMC testing platform for a front-view camera of an ADAS system of an intelligent vehicle. Background Art

[0002] In recent years, with the development of national strategies and automobile technology, autonomous driving technology has been rapidly promoted, and the installation rate of advanced driver assistance systems (ADAS) has gradually increased. The ADAS system of smart cars has the characteristics of strong correlation between "people-vehicle-environment". The complexity and variability of the environment requires a lot of testing work before the application of the ADAS system of smart cars.

[0003] Smart car testing is usually field testing and simulation testing. Field testing requires a large test site to build various traffic scenes to simulate the real-life scenes in front of the car. Simulation testing uses virtual simulation technology to simulate and model road environment, traffic, perception and other systems, and can be tested under extreme scenes and customized multi-dimensional working conditions to achieve all-round and efficient verification of smart cars. Among them, the front-view camera test of the ADAS system of a smart car with a whole vehicle in the loop is usually simulated by showing a simulation scene in front of the test vehicle. Electromagnetic compatibility testing (EMC) needs to be carried out in a semi-anechoic chamber. Due to the limited space in the semi-anechoic chamber, it is impossible to install large, multi-angle equipment to simulate the real surrounding scenes. The current mainstream is video dark box testing and using screens and projectors to show simulation scenes to test the front-view camera. For example, the Chinese patent with document number CN 110988555B discloses an electromagnetic compatibility test platform for autonomous driving smart cars based on hardware in the loop, which uses a scene simulation system to test the electromagnetic compatibility of the on-board front-view camera.

[0004] However, since the screen and projector occupy too much space, they have a certain impact on the placement of facilities in the experimental site. At the same time, the use of screens and projectors cannot achieve rapid calibration of the front-view camera, the calibration process is cumbersome, and the calibration accuracy is low. In addition, the costs of both screen and projector and video darkroom testing are relatively high. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides an EMC test platform for the front-view camera of the ADAS system of an intelligent automobile, which is intended to solve the problems that the existing front-view camera EMC test platform has a large impact on the space of the test site, the calibration process is cumbersome, the calibration accuracy is low, and the cost is high. To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] An EMC test platform for a front-view camera of an ADAS system of an intelligent vehicle comprises a fixing bracket, a display unit, an adjustment unit and a central control unit; the adjustment unit is installed on a vehicle to be tested through the fixing bracket; a display unit is arranged on the adjustment unit, and the adjustment unit is used to adjust the angle and position of the display unit; the display unit is used to display a simulation scene; and the central control unit is at least used to control the execution of the display unit.

[0007] Furthermore, the adjustment unit includes a horizontal adjustment component and a vertical adjustment component arranged perpendicular to the horizontal adjustment component; the horizontal adjustment component is slidably installed on the fixed bracket and can slide left and right relative to the fixed bracket; the vertical adjustment component is slidably connected to the horizontal adjustment component and can slide forward and backward relative to the horizontal adjustment component; the display unit is slidably connected to the vertical adjustment component and can slide up and down relative to the vertical adjustment component.

[0008] Furthermore, the adjustment unit also includes a rotating assembly; the horizontal adjustment assembly is connected to the vertical adjustment assembly via the rotating assembly; and the rotating assembly is used to drive the vertical adjustment assembly to rotate.

[0009] Furthermore, the adjustment unit also includes a calibration component; the calibration component is used to quickly calibrate the display unit.

[0010] Furthermore, the calibration component includes a first calibration camera and a second calibration camera; the first calibration camera is slidably connected to the horizontal adjustment component, and the first calibration camera is located between the vertical adjustment component and the fixed bracket; the second calibration camera is arranged on the vertical adjustment component.

[0011] Furthermore, the fixed bracket extends in the left-right direction; the fixed bracket is provided with a first slide rail having the same extension direction as the fixed bracket, and the first slide rail is connected to the horizontal adjustment component.

[0012] Furthermore, the horizontal adjustment component includes a third slide rail and a second slide rail connected in sequence from front to back; the right end of the second slide rail is connected to the first slide rail; the vertical adjustment component is connected to the third slide rail; and the first calibration camera is connected to the second slide rail.

[0013] Furthermore, the vertical adjustment assembly includes a fourth slide rail; the upper end of the fourth slide rail is connected to the third slide rail.

[0014] Furthermore, the vertical adjustment component also includes a guide rail motor used in conjunction with the fourth slide rail, and the guide rail motor is connected to the central control unit.

[0015] Furthermore, the fixing bracket can be detachably mounted on the vehicle to be tested.

[0016] The beneficial effects of the utility model are:

[0017] 1. The EMC test platform for the front-view camera of the ADAS system of an intelligent automobile provided by the utility model greatly reduces the space occupied by the semi-anechoic chamber by adopting an adjustment unit and cooperating with a micro display screen.

[0018] 2. The EMC test platform for the front-view camera of the ADAS system of an intelligent vehicle provided by the utility model provides a feasible solution for reconstructing the actual driving scene in a semi-anechoic chamber, which greatly facilitates the calibration of the front-view camera in the electromagnetic compatibility test of the ADAS system of an intelligent vehicle, and greatly improves the calibration efficiency compared to the current mainstream test solutions.

[0019] 3. The EMC test platform for the front-view camera of the ADAS system of an intelligent automobile provided by the utility model is easy to use and is carried out in a splicing manner. The whole can be quickly disassembled and installed, and can be flexibly transported and used. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the EMC test platform for the front-view camera of the ADAS system of an intelligent vehicle provided by the utility model;

[0021] Figure 2 It is a side view of the EMC test platform for the front-view camera of the ADAS system of an intelligent vehicle provided by the utility model;

[0022] Figure 3 It is a top view of the EMC test platform for the front-view camera of the ADAS system of an intelligent vehicle provided by the utility model;

[0023] Figure 4 This is a bottom view of the EMC test platform for the front-view camera of the ADAS system of an intelligent vehicle provided by the utility model;

[0024] Figure 5 yes Figure 4 A partial enlarged view of the middle A;

[0025] In the accompanying drawings: 1-fixed bracket, 2-display unit, 3-rotating assembly, 4-first calibration camera, 5-second calibration camera, 6-first slide rail, 7-second slide rail, 8-third slide rail, 9-fourth slide rail. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the present invention is not limited to the following embodiments.

[0027] Embodiment 1:

[0028] See attached Figures 1 to 5 . In this embodiment, the utility model provides an EMC test platform for a front-view camera of an ADAS system of an intelligent automobile, comprising a fixed bracket 1, a display unit 2, an adjustment unit and a central control unit. The test platform is installed above the roof of the vehicle to be tested through the fixed bracket 1; the display unit 2 is used to display the simulation scene, for example, the display unit 2 can use a micro display screen; the position of the display unit 2 is precisely controlled by the adjustment unit; and the central control unit is at least used to control the execution of the display unit 2.

[0029] The front and rear directions of the vehicle to be tested are defined as the front-to-back direction, i.e., the x-direction; the left and right doors are defined as the left-right direction, i.e., the y-direction; and the top and bottom of the vehicle are defined as the up-down direction, i.e., the z-direction. Figure 1 As shown, the adjustment unit includes a horizontal adjustment component and a vertical adjustment component vertically arranged with the horizontal adjustment component. The horizontal adjustment component is slidably mounted on the fixed bracket 1 and can slide left and right relative to the fixed bracket 1. The vertical adjustment component is slidably connected to the horizontal adjustment component and can slide forward and backward relative to the horizontal adjustment component. The display unit 2 is slidably connected to the vertical adjustment component and can slide up and down relative to the vertical adjustment component. For example, the horizontal adjustment component and the vertical adjustment component can be slide rails. Through the mutual cooperation between the horizontal adjustment component, the vertical adjustment component and the display unit 2, the position adjustment of the display unit 2 can be realized.

[0030] In this embodiment, the adjustment unit further includes a rotating assembly 3, through which the horizontal adjustment assembly is connected to the vertical adjustment assembly, and the rotating assembly 3 is used to drive the vertical adjustment assembly to rotate. The rotating assembly 3 can be a rotating truncated table. Therefore, the vertical assembly can slide forward and backward relative to the horizontal assembly, and can also rotate along its rotation direction, so as to further realize the adjustment and control of the position and angle of the display unit 2.

[0031] In this embodiment, the adjustment unit further includes a calibration component, which is used to quickly calibrate the display unit 2. The calibration component can be a miniature calibration camera. Figure 2 As shown, the calibration assembly includes a first calibration camera 4 and a second calibration camera 5. The first calibration camera 4 is slidably connected to the horizontal adjustment assembly, and the first calibration camera 4 is located between the vertical adjustment assembly and the fixed bracket 1; the second calibration camera 5 is arranged on the vertical adjustment assembly, and preferably, the second calibration camera 5 and the display unit 2 are arranged in a face-to-face relationship.

[0032] When in use, the test platform is accurately installed above the roof of the vehicle to be tested through the fixed bracket 1, and then the position and angle of the display unit 2 are accurately controlled through the adjustment unit, and the display unit 2 is calibrated to the front-view camera through the micro calibration camera. Finally, the ADAS function of the car is activated through the simulation scene, and its performance is tested in the EMC environment.

[0033] Embodiment 2:

[0034] See attached Figures 1 to 5 On the basis of Example 1, Figure 1 As shown, the fixed bracket 1 extends in the left-right direction, and the fixed bracket 1 can be a clamp-type fixed bracket, so that the fixed bracket 1 can be detachably installed on the vehicle to be tested. A first slide rail 6 is provided above the fixed bracket 1 in the same extending direction as the fixed bracket 1, and the first slide rail 6 is connected to the horizontal adjustment component, and the horizontal adjustment component can slide left and right relative to the fixed bracket 1 through the first slide rail 6. The first slide rail 6 can be an existing screw rail.

[0035] The horizontal adjustment component includes a third slide rail 8 and a second slide rail 7 connected in sequence from front to back, the right end of the second slide rail 7 is connected to the first slide rail 6, the vertical adjustment component is connected to the third slide rail 8, and the first calibration camera 4 is connected to the second slide rail 7. The second slide rail 7 and the third slide rail 8 can both be existing screw rails. Preferably, the first calibration camera 4 is connected to the sliding component in the second slide rail 7, and when the sliding component moves back and forth under the action of its screw rod, it drives the first calibration camera 4 to move back and forth. The vertical adjustment component is connected to the sliding component in the third slide rail 8, and when the sliding component moves back and forth under the action of its screw rod, it drives the vertical adjustment component to move back and forth. Preferably, the adjustment method of the first slide rail 6, the second slide rail 7 and the third slide rail 8 is manual adjustment, which is convenient for reducing the overall weight of the test platform.

[0036] Specifically, the vertical adjustment assembly includes a fourth slide rail 9, and the upper end of the fourth slide rail 9 is connected to the sliding component of the third slide rail 8. The vertical adjustment assembly also includes a rail motor used in conjunction with the fourth slide rail 9, and the rail motor is connected to the central control unit, so that the fourth slide rail 9 can be adjusted electrically for easy operation.

[0037] The calibration steps of the EMC test platform for the front-view camera of an ADAS system of an intelligent vehicle provided by the utility model are as follows:

[0038] a) rotating the rotating assembly to rotate the second calibration camera 5 to the front of the vehicle-mounted front-view camera;

[0039] b) manually adjusting the first slide rail 6 so that the horizontal assembly is located near the center axis of the vehicle to be tested;

[0040] c) manually adjusting the second slide rail 7 and fine-tuning the first slide rail 6 at the same time, so that the vehicle-mounted front-view camera is in the center of the image captured by the first calibration camera 4;

[0041] d) manually adjusting the third slide rail 8 to the calibrated distance to complete the calibration of the display unit 2 and the vehicle-mounted front-view camera in the x direction;

[0042] e) electrically adjusting the fourth slide rail 9 and manually adjusting the first slide rail 6 so that the vehicle-mounted front-view camera is in the center of the picture taken by the second calibration camera 5, completing the calibration of the display unit 2 and the vehicle-mounted front-view camera in the y and z directions;

[0043] f) After calibration is completed, rotate the rotating assembly to rotate the display unit 2 to the front of the vehicle-mounted front-view camera and start testing.

[0044] The utility model provides an EMC test platform for the front-view camera of an intelligent automobile ADAS system, which can be flexibly installed on the roof of the vehicle to be tested, and avoids interference with the roof skylight, thereby reducing the occupation of the darkroom test site. The position and angle of the micro display screen are precisely controlled by an adjustment unit, and the front-view camera is calibrated by the display screen simulation scene through a micro calibration camera. Finally, the automobile ADAS function is activated through the simulation scene, and its performance is tested in an EMC environment. The utility model provides a feasible solution for the reconstruction of the actual driving scene in a semi-wave darkroom, which greatly facilitates the calibration of the front-view camera in the electromagnetic compatibility test of the intelligent automobile ADAS system.

[0045] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An EMC test platform for the front-view camera of an intelligent vehicle ADAS system, characterized by: The invention comprises a fixing bracket (1), a display unit (2), an adjustment unit and a central control unit; the adjustment unit is installed on the vehicle to be tested via the fixing bracket (1); the adjustment unit is provided with a display unit (2), and the adjustment unit is used to adjust the angle and position of the display unit (2); the display unit (2) is used to display a simulation scene; and the central control unit is at least used to control the execution of the display unit (2).

2. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 1, characterized in that: The adjustment unit comprises a horizontal adjustment component and a vertical adjustment component arranged perpendicular to the horizontal adjustment component; the horizontal adjustment component is slidably mounted on the fixed bracket (1) and can slide left and right relative to the fixed bracket (1); the vertical adjustment component is slidably connected to the horizontal adjustment component and can slide forward and backward relative to the horizontal adjustment component; the display unit (2) is slidably connected to the vertical adjustment component and can slide up and down relative to the vertical adjustment component.

3. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 2, characterized in that: The adjustment unit further comprises a rotating assembly (3); the horizontal adjustment assembly is connected to the vertical adjustment assembly via the rotating assembly (3); the rotating assembly (3) is used to drive the vertical adjustment assembly to rotate.

4. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 2, characterized in that: The adjustment unit also includes a calibration component; the calibration component is used to quickly calibrate the display unit (2).

5. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 4, characterized in that: The calibration component comprises a first calibration camera (4) and a second calibration camera (5); the first calibration camera (4) is slidably connected to the horizontal adjustment component, and the first calibration camera (4) is located between the vertical adjustment component and the fixed bracket (1); the second calibration camera (5) is arranged on the vertical adjustment component.

6. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 5, characterized in that: The fixed bracket (1) extends in the left-right direction; the fixed bracket (1) is provided with a first slide rail (6) extending in the same direction as the fixed bracket (1); the first slide rail (6) is connected to the horizontal adjustment component.

7. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 6, characterized in that: The horizontal adjustment component comprises a third slide rail (8) and a second slide rail (7) connected in sequence from front to back; the right end of the second slide rail (7) is connected to the first slide rail (6); the vertical adjustment component is connected to the third slide rail (8); and the first calibration camera (4) is connected to the second slide rail (7).

8. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 7, characterized in that: The vertical adjustment component comprises a fourth slide rail (9); the upper end of the fourth slide rail (9) is connected to the third slide rail (8).

9. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 8, characterized in that: The vertical adjustment component also includes a guide rail motor used in conjunction with the fourth slide rail (9), and the guide rail motor is connected to the central control unit.

10. The EMC test platform for the front-view camera of an intelligent vehicle ADAS system according to claim 1, characterized in that: The fixing bracket (1) can be detachably mounted on the vehicle to be tested.

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