A simulation test platform for the overall evaluation of intelligent vehicles

Abstract

The present invention provides a simulation test platform for the overall evaluation of intelligent vehicles, which includes a body, a pallet, a carriage, rear evaluation components, sliding components, and front evaluation components. The pallet is rotatably connected to the middle of the body, the carriage is slidably connected to the body below the pallet, two groups of sliding components are installed on both sides of the rear end of the carriage, two groups of rear evaluation components are respectively installed on the sliding components, and the front evaluation component is installed in the middle of the front end of the carriage; a test vehicle is placed on the pallet, the rear evaluation component contacts the rear wheels of the test vehicle to detect the rotational speed and torque, and the front evaluation component contacts the front wheels of the test vehicle to detect the steering angle. The present invention has the advantage of being able to comprehensively evaluate the driving performance of the whole vehicle on the premise of ensuring absolute safety.

Description

Technical Field

[0001] The present invention relates to the field of automotive test equipment, and more specifically, to a simulation test platform for the evaluation of intelligent vehicle whole vehicles. Background Art

[0002] With the development of ADAS (Advanced Driver Assistance System) and driverless technologies, their electronic control systems have become increasingly diversified, and the categories of control units and sensors have also become increasingly rich. Currently, when conducting ADAS tests on whole vehicles, they are all carried out by directly driving real vehicles on the road by drivers. Although this method can be closest to the existing driving state, after all, the algorithms of ADAS are still in a basic and imperfect stage, with insufficient safety and stability. Once sensor recognition errors or algorithm calculation errors occur, resulting in incorrect control of the whole vehicle by ADAS, causing accidents such as collisions or rollovers, it will greatly affect the safety of drivers, and the test risks are relatively high. Summary of the Invention

[0003] In order to solve the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a simulation test platform for the evaluation of intelligent vehicle whole vehicles to overcome the defects in the prior art.

[0004] To achieve the above purpose, the present invention provides a simulation test platform for the evaluation of intelligent vehicle whole vehicles, including a body, a pallet, a carriage, a rear evaluation component, a sliding component, and a front evaluation component. The pallet is rotatably connected to the middle of the body, the carriage is slidably connected to the body below the pallet, two groups of sliding components are erected on both sides of the rear end of the carriage, two groups of rear evaluation components are respectively erected on the sliding components, and the front evaluation component is erected in the middle of the front end of the carriage; a test vehicle is placed on the pallet, the rear evaluation component contacts the rear wheels of the test vehicle to detect the rotational speed and torque, and the front evaluation component contacts the front wheels of the test vehicle to detect the steering angle.

[0005] As a further description of the present invention, preferably, the sliding component includes a hydraulic cylinder and a push plate. The hydraulic cylinder is fixedly connected to the carriage, the telescopic direction of the hydraulic cylinder is the axial direction of the rear wheels of the test vehicle, the push plate is fixedly connected to the output end of the hydraulic cylinder, and the bottom end of the push plate contacts the carriage.

[0006] As a further description of the present invention, preferably, the rear evaluation component includes a rotational speed measuring device and a turntable. The rotational speed measuring device is fixedly connected to one side of the push plate, the input end of the rotational speed measuring device passes through the other side of the push plate, the turntable is fixedly connected to the input end of the rotational speed measuring device, and the turntable abuts against the side surface of the rear wheel of the test vehicle.

[0007] As a further description of the present invention, preferably, a plurality of protruding columns are fixedly connected at intervals on the side surface of the turntable close to the test vehicle, and the protruding columns are inserted into the hub gaps of the rear wheels of the test vehicle.

[0008] As a further description of the present invention, preferably, a torque sensor is mounted on the rotational speed measurer, and the input end of the torque sensor is fixedly connected to the other side of the input end of the rotational speed measurer.

[0009] As a further description of the present invention, preferably, the front evaluation component includes a steering sensor and a test plate. The steering sensor is fixedly connected to the lower end surface of the middle part of the front end of the carriage, the test plate is rotatably connected to the upper end surface of the middle part of the front end of the carriage, the test plate is fixedly connected to the input end of the steering sensor, and the test plate contacts the front wheels of the test vehicle.

[0010] As a further description of the present invention, preferably, asphalt is laid on the upper surface of the test plate.

[0011] As a further description of the present invention, preferably, a deflection motor is fixedly connected to one side of the machine body, and the deflection motor is rotatably connected to the support plate to deflect the support plate by ±45°.

[0012] As a further description of the present invention, preferably, a landslide platform is fixedly connected to the machine body below the rear evaluation component. One side surface of the landslide platform is an inclined surface, and the inclination angle of the inclined surface is 45°. After the support plate deflects by 45°, the top end surface is in the same plane as the inclined surface, and the distance between the support plate and the landslide platform is less than 50 mm.

[0013] As a further description of the present invention, preferably, wheel grooves are provided on the landslide platform, and the wheels of the test vehicle are inserted into the wheel grooves and abut against the bottom end surfaces of the wheel grooves.

[0014] The present invention has the following beneficial effects:

[0015] The present invention jacks up the whole vehicle by setting a deflectable support plate to suspend the wheels, avoiding the movement of the wheels. At the same time, by using the contact between the front evaluation component and the rear evaluation component and the wheels, the changes in the rotational speed, steering and torque of the wheels of the whole vehicle in the corresponding driving environment are detected to judge whether the ADAS system algorithm on the actual vehicle is accurate. Even if there are deviations and errors, no accidents will occur, and there is no need to conduct road condition experiments, with low test costs and high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the left side view of the present invention;

[0017] Figure 2 is the right side view of the present invention;

[0018] Figure 3 is the rear view of the present invention;

[0019] Figure 4 is Figure 3 the enlarged view of A in

[0020] Figure 5 is the top view of the present invention;

[0021] Figure 6 is Figure 5 An enlarged view of B in;

[0022] Figure 7 is the front view of the present invention.

[0023] Explanation of reference numerals:

[0024] 1, body; 11, chute; 12, controller; 13, deflection motor; 14, landslide platform; 15, wheel groove; 2, pallet; 3, carriage; 4, post-evaluation component; 41, rotational speed measurer; 42, turntable; 43, protruding column; 44, torque sensor; 5, sliding component; 51, hydraulic cylinder; 52, push plate; 6, pre-evaluation component; 61, steering sensor; 62, test plate; 7, test vehicle. Detailed implementation manners

[0025] In order to further understand the structure, features and other purposes of the present invention, the following is a detailed description with reference to the attached preferred embodiments and accompanying drawings. The embodiments described by these drawings are only used to illustrate the technical solutions of the present invention and do not limit the present invention.

[0026] A simulation test platform for the evaluation of the whole vehicle of an intelligent vehicle, in combination with Figure 1 , Figure 4 , includes a body 1, a pallet 2, a carriage 3, a post-evaluation component 4, a sliding component 5 and a pre-evaluation component 6. The pallet 2 is rotatably connected to the middle of the body 1. The carriage 3 is slidably connected to the body 1 below the pallet 2. Two groups of sliding components 5 are erected on both sides of the rear end of the carriage 3. Two groups of post-evaluation components 4 are respectively erected on the sliding components 5. The pre-evaluation component 6 is erected in the middle of the front end of the carriage 3. Among them, a test vehicle 7 is placed on the pallet 2.

[0027] In combination with Figure 1 , Figure 2 , the body 1 is two metal columns, the pallet 2 is a square metal plate, and the length of the pallet 2 is less than the wheelbase of the front and rear wheels of the test vehicle 7, which can make the front and rear wheels of the test vehicle 7 suspended, avoiding the movement of the test vehicle 7 when the rear wheels drive and rotate, and ensuring that the test vehicle 7 is fixed on the pallet 2; One side of the body 1 is fixedly connected with a deflection motor 13. The deflection motor 13 is rotatably connected to the pallet 2. The deflection motor 13 can deflect the pallet 2 by ±45°, so as to simulate the state of the vehicle when going uphill or downhill in reality.

[0028] In combination with Figure 1 , Figure 3, a landslide platform 14 is fixedly connected below the body 1 and behind the post-evaluation component 4. One side of the landslide platform 14 is an inclined plane with an inclination angle of 45°. After the pallet 2 is deflected by 45°, the top surface of the pallet 2 is in the same plane as the inclined plane. The distance between the pallet 2 and the landslide platform 14 is less than 50 mm. A wheel groove 15 is provided on the landslide platform 14. The wheels of the test vehicle 7 are inserted into the wheel groove 15 and abut against the bottom end surface of the wheel groove 15. When the test vehicle 7 needs to be tested, first, the deflection motor 13 controls the pallet 2 to deflect towards the landslide platform 14. When the top surface of the pallet 2 coincides with the inclined plane of the landslide platform 14, the driver drives the test vehicle 7 along the wheel groove 15 onto the pallet 2. The wheel groove 15 is provided to stabilize the driving direction of the test vehicle 7 and prevent the driving direction of the test vehicle 7 from deviating. Subsequently, only the deflection motor 13 needs to be controlled to turn the pallet 2 to the horizontal position to complete the loading of the test vehicle 7. Similarly, after the test is completed, the test vehicle 7 can be reversed and driven off the landslide platform 14 without manual lifting and additional loading and unloading devices, which is simple and practical.

[0029] Combined with Figure 1 , Figure 2 , vertical sliding grooves 11 are provided on both sides of the body 1 below the pallet 2. The sliding frame 3 is a portal-shaped bracket. The middle parts on both sides of the sliding frame 3 are slidably connected in the sliding grooves 11. A cylinder is fixedly connected to the inner bottom of the body 1, and the output end of the cylinder is fixedly connected to the sliding frame 3 to move the sliding frame 3 up and down, enabling the post-evaluation component 4 and the pre-evaluation component 6 to contact the wheels of the test vehicle 7 for testing the test vehicle 7. A controller 12 is further provided on one side of the body 1. The controller 12 is electrically connected to the deflection motor 13 and the cylinder to control their independent operation.

[0030] Combined with Figure 5 , Figure 6 , the sliding component 5 includes a hydraulic cylinder 51 and a push plate 52. The hydraulic cylinder 51 is fixedly connected to the sliding frame 3. The telescopic direction of the hydraulic cylinder 51 is the axial direction of the rear wheels of the test vehicle 7. The push plate 52 is fixedly connected to the output end of the hydraulic cylinder 51. The bottom end of the push plate 52 contacts the sliding frame 3 to push the post-evaluation component 4 towards the test vehicle 7 for testing, or to move it away from the test vehicle 7 to facilitate loading or unloading the test vehicle 7 onto or off the pallet 2.

[0031] Combined with Figure 4 , Figure 6, the post-evaluation component 4 includes a rotational speed measurer 41 and a turntable 42. The rotational speed measurer 41 is fixedly connected to one side of the push plate 52, and the input end of the rotational speed measurer 41 passes through the other side of the push plate 52. The turntable 42 is fixedly connected to the input end of the rotational speed measurer 41, and the turntable 42 abuts against the side surface of the rear wheel of the test vehicle 7. Two protruding columns 43 are fixedly connected at intervals on one side surface of the turntable 42 close to the test vehicle 7. The protruding columns 43 are inserted into the hub clearance of the rear wheel of the test vehicle 7. A torque sensor 44 is mounted on the rotational speed measurer 41, and the input end of the torque sensor 44 is fixedly connected to the other side of the input end of the rotational speed measurer 41. When the protruding columns 43 are inserted into the rear wheel, when the rear wheel rotates, the rotational speed of the rear wheel can be collected by the rotational speed measurer 41, and the torque of the rear wheel can be collected by the torque sensor 44. Setting the protruding columns 43 can ensure that the turntable 42 rotates synchronously with the rear wheel, realizing the accuracy of the data.

[0032] Combined with Figure 1 , Figure 7 , the pre-evaluation component 6 includes a steering sensor 61 and a test plate 62. The steering sensor 61 is fixedly connected to the lower end surface of the middle part of the front end of the carriage 2, the test plate 62 is rotatably connected to the upper end surface of the middle part of the front end of the carriage 3, the test plate 62 is fixedly connected to the input end of the steering sensor 61, the test plate 62 contacts the front wheel of the test vehicle 7, and the upper surface of the test plate 62 is covered with asphalt. During the test, the simulated road condition experiment data is transmitted into the ADAS system. First, the driver operates independently according to the road condition experiment data. After the driver's actual operation, the ADAS system drives the rear wheels of the test vehicle 7 through algorithm analysis of the experiment data and controls the front wheels to steer. At this time, it is detected whether the front wheels steer through the pre-evaluation component 6, and whether the steering angle is the same as the situation when the driver drives, and the algorithm of the ADAS system is judged accurately by combining the data of the rear wheels.

[0033] In summary, the present invention lifts the whole vehicle by setting the deflectable support plate 2, making the wheels suspended and avoiding the movement of the wheels. At the same time, by using the abutment of the pre-evaluation component 6 and the post-evaluation component 4 with the wheels, the changes in the rotational speed, steering and torque of the wheels of the whole vehicle in the corresponding driving environment are detected to judge whether the algorithm of the ADAS system on the actual vehicle is accurate. Even if there are deviations and errors, no accidents will occur, and there is no need to conduct road condition experiments, with low test costs and high safety.

[0034] It should be noted that the above-mentioned invention content and specific implementation manners are intended to prove the practical application of the technical solutions provided by the present invention, and should not be construed as a limitation of the protection scope of the present invention. Those skilled in the art can make various modifications, equivalent replacements or improvements within the spirit and principle of the present invention. The protection scope of the present invention shall be subject to the appended claims.

Claims

1. A simulation test platform for the overall evaluation of intelligent vehicles, characterized in that, It includes a machine body (1), a pallet (2), a carriage (3), a rear evaluation component (4), a sliding component (5) and a front evaluation component (6). The pallet (2) is rotatably connected to the middle of the machine body (1), and a test vehicle (7) is placed on the pallet (2). The carriage (3) is slidably connected to the machine body (1) below the pallet (2). Two groups of sliding components (5) are installed on both sides of the rear end of the carriage (3). Among them, the sliding component (5) includes a hydraulic cylinder (51) and a push plate (52). The hydraulic cylinder (51) is fixedly connected to the carriage (3), and the telescopic direction of the hydraulic cylinder (51) is the axial direction of the rear wheels of the test vehicle (7). The push plate (52) is fixedly connected to the output end of the hydraulic cylinder (51), and the bottom end of the push plate (52) contacts the carriage (3). Two groups of rear evaluation components (4) are respectively installed on the sliding components (5). Among them, the rear evaluation component (4) includes a rotational speed measurer (41) and a turntable (42). The rotational speed measurer (41) is fixedly connected to one side of the push plate (52), and the input end of the rotational speed measurer (41) passes through the other side of the push plate (52). The turntable (42) is fixedly connected to the input end of the rotational speed measurer (41), and the turntable (42) abuts against the side surface of the rear wheels of the test vehicle (7) to detect rotational speed and torque. The front evaluation component (6) includes a steering sensor (61) and a test plate (62). The steering sensor (61) is fixedly connected to the lower end surface of the middle of the front end of the carriage (3), and the test plate (62) is rotatably connected to the upper end surface of the middle of the front end of the carriage (3). The test plate (62) is fixedly connected to the input end of the steering sensor (61), and the test plate (62) contacts the front wheels of the test vehicle (7) to detect the steering angle.

2. The simulation test platform for the overall evaluation of intelligent vehicles according to claim 1, wherein On one side surface of the turntable (42) close to the test vehicle (7), a number of protruding columns (43) are fixedly connected at intervals, and the protruding columns (43) are inserted into the hub clearance of the rear wheels of the test vehicle (7).

3. The simulation test platform for the overall evaluation of intelligent vehicles according to claim 2, wherein, A torque sensor (44) is mounted on the rotational speed measurer (41), and the input end of the torque sensor (44) is fixedly connected to the other side of the input end of the rotational speed measurer (41).

4. The simulation test platform for the overall evaluation of intelligent vehicles according to claim 3, characterized in that The upper surface of the test plate (62) is covered with asphalt.

5. A simulation test platform for intelligent vehicle whole vehicle evaluation according to claim 1, characterized in that A deflection motor (13) is fixedly connected to one side of the machine body (1), and the deflection motor (13) is rotatably connected to the pallet (2) to deflect the pallet (2) by ±45°.

6. The simulation test platform for the overall evaluation of intelligent vehicles according to claim 5, wherein, A landslide platform (14) is fixedly connected to the machine body (1) below the rear evaluation component (4). One side surface of the landslide platform (14) is an inclined surface, and the inclination angle of the inclined surface is 45°. After the pallet (2) deflects by 45°, the top end surface is in the same plane as the inclined surface, and the distance between the pallet (2) and the landslide platform (14) is less than 50 mm.

7. The simulation test platform for the overall evaluation of intelligent vehicles according to claim 6, characterized in that, A wheel groove (15) is formed on the landslide platform (14), and the wheels of the test vehicle (7) are inserted into the wheel groove (15) and abut against the bottom end surface of the wheel groove (15).

Images