Test System and Method for the Recognition Ability of a Leading Vehicle's Turn Signal by an Autonomous Driving Vehicle

Abstract

The present invention relates to a test system and method for the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle, which includes: a taillight simulation device for installing taillights; a drum test bench for placing the vehicle under test and bringing the vehicle under test to the test vehicle speed; a data acquisition device connected to the controller of the taillight and the vehicle under test, the data acquisition device being used to collect the control signal of the taillight and the CAN signal of the recognition result of the vehicle under test for the taillight. Since a taillight simulation device is provided to install taillights and a drum test bench is used to simulate the real motion state of the vehicle under test, by collecting and comparing the control signal of the taillight and the CAN signal of the recognition result of the vehicle under test, the recognition ability test for the taillights of the preceding vehicle in different styles can be realized in a short time, the test efficiency can be improved, and the development cost for the recognition and response ability of the preceding vehicle's turn signal in the R & D process can be reduced.

Description

Technical Field

[0001] The present invention relates to the field of autonomous driving, and particularly to a test system and method for the recognition ability of a preceding vehicle's turn signal by an autonomous driving vehicle. Background Art

[0002] At present, an important challenge faced by the large-scale industrialization of autonomous driving is the stage of mixed traffic between autonomous driving vehicles and traditional vehicles. The information interaction between autonomous driving vehicles and traditional vehicles is very important, and the turn signal is an important means for the autonomous driving system to recognize the intention of the preceding vehicle.

[0003] In related technologies, the recognition of the preceding vehicle's turn signal by the autonomous driving system is currently mainly tested through actual vehicles. However, whether it is the in-the-loop test of the whole vehicle or the recognition and response test of the real preceding vehicle's turn signal on the actual road, problems such as low test efficiency, high test cost, and high test risk are caused due to limited turn signal styles and long test cycles. Summary of the Invention

[0004] Embodiments of the present invention provide a test system and method for the recognition ability of a preceding vehicle's turn signal by an autonomous driving vehicle to solve problems such as low test efficiency, high test cost, and high test risk in related technologies.

[0005] In a first aspect, a test system for the recognition ability of a preceding vehicle's turn signal by an autonomous driving vehicle is provided, which includes: a tail light simulation device for installing a tail light; a drum test bench for placing a vehicle under test and bringing the vehicle under test to a test vehicle speed; a data acquisition device connected to a controller of the tail light and the vehicle under test, and the data acquisition device is configured to acquire a control signal of the tail light and a CAN signal of the recognition result of the vehicle under test for the tail light.

[0006] In some embodiments, the tail light simulation device has a position adjustment mechanism, and the position adjustment mechanism includes a first guide rail extending along the X direction, a second guide rail installed on the first guide rail and extending along the Y direction, and a third guide rail installed on the second guide rail and extending along the Z direction. An installation plate is provided on the third guide rail, and the tail light is installed on the installation plate.

[0007] In some embodiments, the test system further includes a vehicle rear skin, and the vehicle rear skin is installed on the tail light simulation device.

[0008] In some embodiments, the tail light simulation device has a brightness adjustment device for connecting to the tail light.

[0009] Second aspect, a test method for a test system of the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle is provided, which includes the following steps: installing a tail lamp to a tail lamp simulation device; using a roller test bench to make the vehicle under test reach the test speed and simulate the longitudinal motion state of the vehicle under test; collecting the control signal of the tail lamp and the CAN signal of the recognition result of the vehicle under test for the tail lamp; judging whether the vehicle under test can recognize the signal of the tail lamp according to the control signal of the tail lamp and the CAN signal of the recognition result for the tail lamp, and if so, calculating the accuracy rate of the vehicle under test in recognizing the signal of the tail lamp.

[0010] In some embodiments, after installing the tail lamp to the tail lamp simulation device, it further includes: moving the tail lamp along a first guide rail and adjusting the distance between the tail lamp and the vehicle under test in the X direction; moving the tail lamp along a second guide rail and adjusting the distance between the tail lamp and the vehicle under test in the Y direction; moving the tail lamp along a third guide rail and adjusting the distance between the tail lamp and the vehicle under test in the Z direction.

[0011] In some embodiments, after installing the tail lamp to the tail lamp simulation device, it further includes: adjusting the brightness of the tail lamp by using a brightness adjustment device.

[0012] In some embodiments, after installing the tail lamp to the tail lamp simulation device, it further includes: spraying sludge on the tail lamp to simulate the degree of soiling of the tail lamp.

[0013] In some embodiments, after installing the tail lamp to the tail lamp simulation device, it further includes: adjusting the illumination of the test chamber to simulate the background illumination of the tail lamp.

[0014] In some embodiments, after installing the tail lamp to the tail lamp simulation device, it further includes: printing a vehicle rear skin, installing the vehicle rear skin to the tail lamp simulation device, and the vehicle rear skin and the tail lamp together simulate the rear of a preceding vehicle.

[0015] The beneficial effects brought by the technical solution provided by the present invention include:

[0016] The embodiments of the present invention provide a test system and method for the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle. Since a tail lamp simulation device is set to install the tail lamp and a roller test bench is used to simulate the real motion state of the vehicle under test, by collecting and comparing the control signal of the tail lamp and the CAN signal of the recognition result of the vehicle under test, the recognition ability test for the tail lights of different styles of the preceding vehicle can be realized in a short time, the test efficiency can be improved, and the development cost for the recognition and response ability of the preceding vehicle's turn signal in the R & D process can be reduced. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a test system for the recognition ability of the turn signal of the vehicle in front by the autonomous vehicle provided by the embodiment of the present invention.

[0019] Reference numerals in the figure:

[0020] 1. Tail lamp simulation device; 11. First guide rail; 12. Second guide rail; 13. Third guide rail; 14. Mounting plate; 2. Drum test bench. Specific embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, rather than all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] The embodiments of the present invention provide a test system and method for the recognition ability of the turn signal of the vehicle in front by the autonomous vehicle, which can solve the problems of low test efficiency, high test cost, high test risk, etc. in the related art.

[0023] See Figure 1As shown, a test system for the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle provided by an embodiment of the present invention may include: a taillight simulation device 1 for installing taillights; a drum test bench 2 for placing the vehicle under test and bringing the vehicle under test to the test vehicle speed; a data acquisition device connected to the controller of the taillight and the vehicle under test, the data acquisition device being used to acquire the control signal of the taillight and the CAN signal of the recognition result of the vehicle under test for the taillight. In this embodiment, by installing a real taillight on the taillight simulation device 1 to simulate the rear lights of the preceding vehicle, the recognition and decision-making strategies of the vehicle under test are related to the vehicle speed. The drum test bench 2 realizes the longitudinal movement of the vehicle under test and brings the vehicle under test to the test vehicle speed, thereby generating a speed signal. The data acquisition device uses a data collector to acquire digital signals with high precision. The taillight installed on the taillight simulation device 1 is convenient to replace, and there is no need to use the whole vehicle for testing, so that the recognition ability test for the rear lights of different styles of preceding vehicles can be realized in a short time, improving the test efficiency and reducing the development cost of the recognition and response ability of the preceding vehicle's turn signal during the R & D process. In other embodiments, the signal of the preceding vehicle's taillight can also be acquired by installing a camera on the vehicle under test.

[0024] See Figure 1 As shown, in some optional embodiments, the taillight simulation device 1 may have a position adjustment mechanism. The position adjustment mechanism includes a first guide rail 11 extending along the X direction, a second guide rail 12 installed on the first guide rail 11 and extending along the Y direction, and a third guide rail 13 installed on the second guide rail 12 and extending along the Z direction. An installation plate 14 is provided on the third guide rail 13, and the taillight is installed on the installation plate 14. In this embodiment, driven by a servo motor, the second guide rail 12 can move along the first guide rail 11, and the third guide rail 13 can move along the second guide rail 12, thereby pulling the taillight to generate longitudinal and lateral displacements, realizing the simulation of the longitudinal and lateral movements between the vehicle under test parked on the drum and the rear of the preceding vehicle. The installation plate 14 can move along the third guide rail 13, and the distance between the two installation plates 14 is adjustable, so as to simulate the taillight height and width of different styles of preceding vehicles, enabling the recognition ability test for the rear lights of different styles, different positions, and different widths of the preceding vehicle to be realized in a short time, improving the test efficiency, making the setting of the taillight closer to the actual vehicle, and making the test results more accurate and reliable. In other embodiments, other adjustment methods can also be adopted according to the actual situation, such as using a telescopic mechanism, a clamping structure, an elastic member, etc., all of which can adjust the position of the taillight.

[0025] Further, the test system may further include a vehicle rear skin, and the vehicle rear skin is installed on the taillight simulation device 1. In this embodiment, the vehicle rear skin is cooperatively installed with the taillights and the taillight simulation device 1 to simulate the tail of the vehicle in front together, making the test environment of the taillights closer to that of an actual vehicle, and the test results are more accurate and more reliable.

[0026] Further, the taillight simulation device 1 may be provided with a brightness adjustment device, and the brightness adjustment device is used to connect to the taillights. In this embodiment, the brightness adjustment device can adjust the brightness of the taillights, so that the recognition ability test of the tail lights of the vehicle in front with different brightness can be realized in a short time, improving the test efficiency, making the brightness of the taillights closer to that of an actual vehicle, and the test results are more accurate and more reliable.

[0027] See Figure 1 As shown, a test method for the test system of the recognition ability of the turn signal of the vehicle in front by an autonomous vehicle provided by an embodiment of the present invention may include the following steps: installing the taillights on the taillight simulation device 1; using a drum test bench 2 to make the vehicle under test reach the test speed and simulate the longitudinal motion state of the vehicle under test; collecting the control signal of the taillights and the CAN signal of the recognition result of the vehicle under test for the taillights; according to the control signal of the taillights and the CAN signal of the recognition result of the taillights, determining whether the vehicle under test can recognize the signal of the taillights. If so, calculating the accuracy rate of the vehicle under test in recognizing the signal of the taillights. In this embodiment, by using the taillights and the taillight simulation device 1 to simulate the tail lights mainly composed of the turn signal and the brake light of the vehicle in front, using the drum test bench 2 to make the vehicle under test reach the test speed, and then by comparing the control signal of the taillights and the CAN signal of the recognition result of the vehicle under test, the perception and decision-making test of the vehicle under test for the tail lights of the vehicle in front can be quickly realized, improving the test efficiency.

[0028] See Figure 1 As shown, in some embodiments, after installing the taillights on the taillight simulation device 1, it may further include: moving the taillights along the first guide rail 11 and adjusting the distance between the taillights and the vehicle under test in the X direction; moving the taillights along the second guide rail 12 and adjusting the distance between the taillights and the vehicle under test in the Y direction; moving the taillights along the third guide rail 13 and adjusting the distance between the taillights and the vehicle under test in the Z direction. In this embodiment, by moving the taillights in the X direction, Y direction, and Z direction, the taillight height of different styles of the vehicle in front and the relative position between the taillights of the vehicle in front and the vehicle under test can be simulated, realizing the test of the tail lights of the vehicle in front at different positions, improving the test efficiency, having a wider data coverage range, and the test results are more accurate.

[0029] Further, after installing the taillight onto the taillight simulation device 1, it may further include: adjusting the brightness of the taillight using a brightness adjustment device. In this embodiment, by adjusting the brightness of the taillight using the brightness adjustment device, taillights of different brightnesses of the vehicle ahead can be simulated, enabling the testing of the taillight at the rear of the vehicle ahead with different brightnesses, improving the testing efficiency, and making the test results more accurate.

[0030] Further, after installing the taillight onto the taillight simulation device 1, it may further include: spraying sludge onto the taillight to simulate the degree of soiling of the taillight. In this embodiment, by simulating the degree of soiling of the taillight, the recognition ability test of the taillight at the rear of the vehicle ahead with different degrees of soiling can be achieved, and the degree of soiling of the taillight is also closer to that of the taillight of an actual vehicle, making the test results more precise and more reliable. In other embodiments, the degree of soiling of the taillight can also be simulated by other methods according to actual needs, for example, creating scratches, frosting for aging, etc.

[0031] Further, after installing the taillight onto the taillight simulation device 1, it may further include: adjusting the illumination in the test chamber to simulate the background illumination of the taillight. In this embodiment, by simulating the background illumination of the taillight, the recognition ability test of the taillight at the rear of the vehicle ahead under different background illuminations can be achieved, and the background illumination of the taillight is also closer to the ambient illumination of an actual vehicle, making the test results more precise and more reliable.

[0032] Further, after installing the taillight onto the taillight simulation device 1, it may further include: printing a vehicle rear skin, installing the vehicle rear skin onto the taillight simulation device 1, and the vehicle rear skin and the taillight together simulate the rear of the vehicle ahead. In this embodiment, the vehicle rear skin is installed in cooperation with the taillight and the taillight simulation device 1 to simulate the rear of the vehicle ahead together, making the test environment of the taillight closer to that of an actual vehicle, and making the test results more precise and more reliable.

[0033] The principle of a test system and method for the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle provided by an embodiment of the present invention is as follows:

[0034] Through the information interaction between the vehicle chassis dynamometer and the vehicle rear simulation bracket, different turn signal and brake light activation scenarios of the simulated rear are set to achieve the perception and decision-making test of the vehicle under test for the taillight at the rear of the preceding vehicle. This system can be extended to the test of all taillights at the rear, and the recognition ability test of the taillights at the rear mainly including the turn signal and brake light of the preceding vehicle with different styles, different brightnesses, different positions, different degrees of soiling, and different background illuminations can be achieved in a short time, improving the test efficiency and reducing the development cost of the recognition and response ability of the preceding vehicle's turn signal during the R & D process.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It should be noted that in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0037] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A test system for the recognition ability of a preceding vehicle's turn signal by an autonomous vehicle, characterized in that, It includes: A taillight simulation device (1) for installing taillights; A drum test bench (2) for placing the vehicle under test and bringing the vehicle under test to the test vehicle speed; A data acquisition device connected to the controller of the taillight and the vehicle under test, the data acquisition device being configured to acquire the control signal of the taillight and the CAN signal of the recognition result of the taillight by the vehicle under test; Wherein, the test system further includes a vehicle rear skin installed on the taillight simulation device (1); The taillight simulation device (1) has a brightness adjustment device for connecting to the taillight; The taillight simulation device (1) has a position adjustment mechanism, the position adjustment mechanism includes a first guide rail (11) extending in the X direction, a second guide rail (12) installed on the first guide rail (11) and extending in the Y direction, and a third guide rail (13) installed on the second guide rail (12) and extending in the Z direction. An installation plate (14) is provided on the third guide rail (13), and the taillight is installed on the installation plate (14); According to the control signal of the taillight and the CAN signal of the recognition result of the taillight, determine whether the vehicle under test can recognize the signal of the taillight. If so, calculate the accuracy rate of the vehicle under test in recognizing the signal of the taillight.

2. A testing method for a testing system of the recognition ability of the turn signal of a preceding vehicle by an autonomous vehicle as described in claim 1, characterized in that, It includes the following steps: Install the taillight on the taillight simulation device (1); Use the drum test bench (2) to bring the vehicle under test to the test vehicle speed and simulate the longitudinal motion state of the vehicle under test; Acquire the control signal of the taillight and the CAN signal of the recognition result of the taillight by the vehicle under test; Wherein, after installing the taillight on the taillight simulation device (1), it further includes: Print the vehicle rear skin, install the vehicle rear skin on the taillight simulation device (1), and the vehicle rear skin and the taillight together simulate the rear of the vehicle in front; After installing the taillight on the taillight simulation device (1), it further includes: Adjust the brightness of the taillight using the brightness adjustment device.

3. The test method of the test system for the recognition ability of the turn signal of the preceding vehicle by an autonomous vehicle according to claim 2, wherein, After installing the taillight on the taillight simulation device (1), it further includes: Move the taillight along the first guide rail (11) and adjust the distance between the taillight and the vehicle under test in the X direction; Move the taillight along the second guide rail (12) and adjust the distance between the taillight and the vehicle under test in the Y direction; Move the taillight along the third guide rail (13) and adjust the distance between the taillight and the vehicle under test in the Z direction.

4. The testing method of the testing system for the recognition ability of the turn signal of the preceding vehicle by an autonomous vehicle as described in claim 2, wherein, After installing the taillight on the taillight simulation device (1), it further includes: Spray sludge on the taillight to simulate the degree of fouling of the taillight.

5. The test method of the test system for the recognition ability of the front vehicle's turn signal of an autonomous vehicle according to claim 2, characterized in that After installing the taillight on the taillight simulation device (1), it further includes: Adjust the illumination in the test chamber to simulate the background illumination of the taillight.

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