Test equipment of vehicle-mounted sensor

Abstract

The invention provides test equipment for a vehicle-mounted sensor, and relates to the technical field of vehicles, in particular to the technical field of automatic driving vehicles. The test equipment comprises a shell used for being connected with a vehicle-mounted sensor; the shell has an open end; the test module is mounted in the shell; at least one test module is provided; wherein the test module comprises a driving device and a shielding device, and the driving device is used for driving the shielding device to move along a first direction, so that the shielding device is switched from an unshielded state to a shielded state; when the shielding device is in the shielding state, at least part of the shielding device extends out of the opening end of the shell, and the extending part can fall under the action of gravity to shield the vehicle-mounted sensor; in the non-shielding state, the shielding device is located in the shell.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, in particular to the technical field of autonomous vehicles, and more particularly to a testing device for vehicle-mounted sensors. BACKGROUND

[0002] An autonomous vehicle (also known as a self-driving vehicle) usually needs to utilize multiple types of sensors to perceive environmental information, and specify a response strategy based on artificial intelligence algorithms for the perceived environmental information, such as predicting the relative motion state of the vehicle and pedestrians or other vehicles, and planning a collision-avoiding path. It can be seen that sensors are particularly important for the driving safety of autonomous vehicles. SUMMARY

[0003] The present disclosure provides a testing device for vehicle-mounted sensors.

[0004] According to an aspect of the present disclosure, a testing device for vehicle-mounted sensors is provided, comprising: a housing configured to be connected with a vehicle-mounted sensor; the housing having an open end; a testing module installed in the housing; the testing module having at least one; when the testing module has multiple, the multiple testing modules are arranged side by side along a second direction; wherein the testing module comprises: a driving device and a shielding device, the driving device being configured to drive the shielding device to move along a first direction, so as to switch the shielding device from an unshielded state to a shielded state; when in the shielded state, at least part of the shielding device extends from the open end of the housing, and the extended part can fall under the action of gravity to shield the vehicle-mounted sensor; when in the unshielded state, the shielding device is located in the housing.

[0005] In some embodiments, the shielding device comprises: a shielding plate having a first surface and a second surface oppositely arranged along the thickness direction thereof; when the shielding device is in the unshielded state, multiple shielding plates are arranged along the first direction, and the second surface is located on the side of the first surface facing the direction of gravity; a flexible connecting piece connected with two adjacent shielding plates.

[0006] In some embodiments, the flexible connecting piece is connected with the second surface of the shielding plate.

[0007] In some embodiments, the first spacing between two adjacent shielding plates is less than or equal to a preset distance, so as to limit one of the shielding plates from folding relative to the other shielding plate along the direction towards the first surface.

[0008] In some embodiments, the sizes of at least two shielding plates are the same; and / or, the shielding plate is rectangular.

[0009] In some embodiments, the two opposite side plates of the housing are respectively provided with mounting grooves; a guide baffle is provided inside the housing and is inserted into the mounting groove; the guide baffle is parallel to the shield to guide the movement of the shield.

[0010] In some embodiments, at least one of the shielding plates is irregularly shaped.

[0011] In some embodiments, the test device further includes a pushing device connected to the driving device and detachably connected to the shielding device.

[0012] In some embodiments, the pushing device includes: a connecting beam extending along the first direction and having a first end and a second end spaced apart along the first direction, the first end being disposed near a fixed end of the housing, the fixed end of the housing being opposite to an open end; a mounting plate fixedly connected to the connecting beam and disposed near the first end of the connecting beam; the mounting plate being detachably connected to the shielding device; and a mounting ear fixedly connected to the connecting beam and disposed near the second end of the connecting beam; the mounting ear being connected to the driving device.

[0013] In some embodiments, the mounting plate is provided with at least two first mounting holes, the axial direction of the first mounting holes is parallel to the first direction, and the two first mounting holes are spaced apart along the first direction; the shielding device is provided with a plug-in portion, the plug-in portion including a columnar body, the plug-in body being inserted into the first mounting hole.

[0014] In some embodiments, the plug portion is magnetically fixed, snapped into, or threadedly connected to the first mounting hole.

[0015] In some embodiments, the columnar body is provided with a threaded section for passing through the first mounting hole and engaging with a nut.

[0016] In some embodiments, the testing device further includes: a test nozzle connected to the pushing device; the outlet of the test nozzle is located on the side of the test nozzle facing the direction of gravity, and the blocking device is located on the side of the test nozzle facing the direction of gravity.

[0017] In some embodiments, the actuating device further includes: a mounting base disposed near the second end of the connecting beam of the actuating device, fixedly connected to at least one of the mounting ears or the connecting beam of the actuating device, and used to mount the test nozzle.

[0018] In some embodiments, the test nozzle includes: a nozzle body having an inlet, a vortex chamber, and an outlet, the vortex chamber being connected between the inlet and the outlet; wherein the inlet is used to connect to a fluid source via a water pipe, and the vortex chamber is used to guide the incoming fluid to rotate, thereby atomizing the fluid flowing out of the outlet; and an adjustment ring rotatably connected to the nozzle body.

[0019] In some embodiments, the adjusting ring is used to adjust the geometric parameters of the fluid channel inside the vortex cavity to regulate the state of the fluid flowing out of the outlet.

[0020] In some embodiments, the driving device includes: a drive motor, a reducer, a telescopic rod, and a connector; the drive motor is disposed near the fixed end of the housing; the fixed end of the housing is opposite to the open end; the reducer is connected between the drive motor and the telescopic rod, and the end of the telescopic rod opposite to the reducer is connected to the connector.

[0021] In some embodiments, the driving device is further configured to drive the blocking device to move in the opposite direction to the first direction, so that the blocking device switches from a blocking state to an unblocked state.

[0022] In some embodiments, an adhesive layer is provided on the surface of the housing facing the vehicle sensor.

[0023] In some embodiments, the housing is used for detachable connection with the vehicle-mounted sensor.

[0024] In some embodiments, there are multiple test modules, which are arranged side by side along a second direction, which is perpendicular to the first direction.

[0025] This embodiment can construct a test scenario where the sensor is obstructed.

[0026] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0027] The accompanying drawings are provided to better understand this solution and do not constitute a limitation of this disclosure. Wherein: Figure 1 This is a three-dimensional structural diagram of a test device (with the shielding device in an unshielded state) provided according to an embodiment of the present disclosure; Figure 2 This is a top view of a test apparatus provided according to an embodiment of the present disclosure; Figure 3This is a three-dimensional structural diagram of the shielding device in the testing equipment provided according to an embodiment of the present disclosure when the shielding device is in the shielding state; Figure 4 This is a three-dimensional structural diagram of the shielding device in the test equipment provided according to another embodiment of the present disclosure when the shielding device is in the shielding state; Figure 5 This is a three-dimensional structural diagram of a testing device (with the shielding device removed) provided according to an embodiment of the present disclosure. Figure 1 ; Figure 6 This is a three-dimensional structural diagram of a testing device (with the shielding device removed) provided according to an embodiment of the present disclosure. Figure 2 ; Figure 7 This is a schematic diagram of the structure of a test device (when the shielding device is removed) provided according to an embodiment of the present disclosure, in which part of the test nozzle is pushed out along the first direction; Figure 8 This is a schematic diagram of the structure of the pushing device, the test nozzle, and the shielding device in a test device provided according to an embodiment of the present disclosure; Figure 9 This is a schematic diagram of the structure of the pushing device and the test nozzle in a testing apparatus provided according to an embodiment of the present disclosure. Figure 1 ; Figure 10 This is a schematic diagram of the structure of the pushing device and the test nozzle in a testing apparatus provided according to an embodiment of the present disclosure. Figure 2 ; Figure 11 This is a schematic diagram of the structure of the pushing device and the test nozzle in a testing apparatus provided according to an embodiment of the present disclosure. Figure 3 .

[0028] Reference numerals: 100-Outer shell; 100a-Open end; 100b-Mounting groove; 101-Guide section; 102-Adhesive layer; 103-Guide baffle; 200-Test module; 210-Drive device; 211-Drive motor; 212-Reducer; 213-Telescopic rod; 214-Connector; 215-Motor mounting base; 220-Shielding device; 221-Shielding plate; 222-Flexible connector; 230-Pushing device; 231-Connecting beam; 232-Mounting plate; 232a-First mounting hole; 233-Mounting ear; 234-Mounting base; 235-Connecting shaft; 240-Test nozzle; 241-Nozzle body; 242-Adjusting ring; 243-Water pipe. Detailed Implementation

[0029] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0030] Open road testing is an indispensable part of the research and development of autonomous driving technology. It provides more realistic driving conditions, which is crucial for verifying the reliability and safety of autonomous driving systems. Open road testing helps ensure that autonomous driving systems can accurately perform their functions in various real-world scenarios, thereby ensuring driving safety.

[0031] In related technologies, when facing test scenarios where sensors are obstructed, the test scenarios are usually constructed by manually using a probe while the autonomous vehicle is stationary. However, it is impossible to construct test scenarios where sensors are obstructed while the vehicle is in autonomous driving mode. Therefore, it is impossible to obtain the performance of autonomous vehicles when sensors malfunction in some real-world scenarios (such as traffic light intersections, turning, U-turns, overtaking, etc.). Therefore, it is urgent to construct scenarios where sensors are obstructed when testing on open roads.

[0032] This embodiment provides a testing device for vehicle-mounted sensors. During open road testing, the testing device is installed above the sensors of the vehicle. By configuring a testing module in the housing, when the vehicle is in autonomous driving mode, the driving device in the testing module drives the blocking device to move to a blocking state. At least a portion of the blocking device in the blocking state can extend from the opening end of the housing, and the portion of the blocking device extending from the opening end can fall down under the action of gravity to block the sensor, thereby constructing a scenario in which the sensor is blocked.

[0033] The structure, function, and implementation process of the vehicle-mounted sensor testing equipment of this embodiment will be illustrated below with reference to the accompanying drawings.

[0034] Please refer to Figures 1 to 4 The vehicle-mounted sensor testing equipment provided in this embodiment includes: a housing 100 for connecting to the vehicle-mounted sensor and having an open end 100a; and a testing module 200 installed in the housing 100. The testing module 200 has at least one component.

[0035] The test module 200 includes a drive unit 210 and a blocking device 220. The drive unit 210 drives the blocking device 220 to move along a first direction, so that the blocking device 220 switches from an unblocked state to a blocked state. In the blocked state, at least a portion of the blocking device 220 extends from the opening end 100a of the housing 100, and the extended portion can fall down under the action of gravity to block the vehicle sensor; in the unblocked state, the blocking device 220 is located inside the housing 100.

[0036] For example, the outer casing 100 is generally in the shape of a quadrangular prism, and this will be used as an example for ease of description. In other examples, the outer casing 100 may also be in other shapes, such as cylindrical or elliptical, depending on the actual needs.

[0037] The housing 100 has a receiving space in which at least one test module 200 is received. The housing 100 has an open end 100a communicating with the receiving space, the open end 100a being for the shielding device 220 of the test module 200 to extend out; the housing 100 also has a fixed end opposite to the open end 100a.

[0038] For ease of description, the direction from the fixed end toward the open end 100a will be taken as forward (i.e., the first direction), and the direction of gravity will be taken as downward (or bottom).

[0039] The outer casing 100 may include a top plate and a bottom plate that are spaced apart in the vertical direction; a side plate is connected between the top plate and the bottom plate, for example, a rear side plate, a left side plate and a right side plate are connected between the top plate and the bottom plate; the top plate, the bottom plate, the rear side plate, the left side plate and the right side plate together form an accommodating space, and the front ends of the top plate, the bottom plate, the left side plate and the right side plate form an opening end 100a.

[0040] One of the left and right side plates has a guide section 101 through which wires can pass. The wires are used to electrically connect the drive device 210 to an external device. The external device is an electronic device with computing and data processing capabilities. For example, the external device may include a host computer.

[0041] In other examples, a connection terminal may also be provided in the guide portion 101 of the housing 100 for electrically connecting the drive device 210 to an external device.

[0042] In some examples, the housing 100 can be detachably connected to the vehicle sensor to facilitate the convenient mounting of the test equipment above the vehicle sensor or the removal of the test equipment from the vehicle sensor as needed.

[0043] For example, the housing 100 can be detachably connected to the vehicle sensor by means of magnetic attraction, vacuum adsorption, fastening connection, etc.

[0044] For example, the lower surface of the base plate can be provided with a magnetic layer, which can be made of magnets. Correspondingly, the upper surface of the vehicle sensor can be provided with a metal layer that can be attracted by the magnetic layer; or, the upper surface of the vehicle sensor is provided with a magnetic layer, and the lower surface of the base plate is provided with a metal layer.

[0045] For example, the base plate may be connected to a support lug, which has a second mounting hole for fasteners to pass through, so as to securely connect the test equipment to the vehicle sensor.

[0046] In other examples, the lower surface of the base plate of the housing 100 may be provided with an adhesive layer 102 for bonding and fixing to the vehicle sensor, so as to facilitate the convenient installation of the test equipment on top of the vehicle sensor or the removal of the test equipment from top of the vehicle sensor as needed.

[0047] It is understood that the connection method between the test equipment and the vehicle-mounted equipment is not limited to this; this embodiment is merely an example.

[0048] One or more test modules 200 can be disposed within the accommodating space of the housing 100. The housing 100 can be mounted directly above the vehicle-mounted sensor. For example, the center plane of the housing 100, which is perpendicular to and parallel to the first direction, can coincide with the center plane of the vehicle-mounted sensor along the corresponding direction. Alternatively, the vehicle-mounted sensor has a center plane parallel to and perpendicular to the first direction, and multiple test modules 200 are symmetrically distributed about this center plane; when there is only one test module 200, the center plane of that test module 200 along the corresponding direction coincides with the center plane of the vehicle-mounted sensor. It is understood that the specific mounting position of the housing 100 on the vehicle-mounted sensor can be set according to actual needs, and this embodiment does not impose a specific limitation.

[0049] The driving device 210 of the test module 200 can provide a driving force in a first direction (i.e., forward) to drive the blocking device 220 forward, so that at least a portion of the blocking device 220 can extend from the housing 100, and the portion of the blocking device 220 extending from the housing 100 can fold downward and hang down under its own gravity, thereby blocking the vehicle sensor, that is, blocking at least a portion of the sensing range of the vehicle sensor. At this time, the blocking device 220 is in the blocking state.

[0050] The area of ​​the part of the blocking device 220 extending out of the housing 100 can be controlled to adjust the blocking area of ​​the vehicle sensor, that is, to adjust the degree of blocking of the sensing range of the vehicle sensor. When the area of ​​the part of the blocking device 220 extending out of the housing 100 is larger, the blocking area of ​​the vehicle sensor is also larger, that is, the degree of blocking of the sensing range of the vehicle sensor is greater.

[0051] Optionally, in scenarios where test obstruction is not required, the drive unit 210 can also drive the obstruction device 220 to move in the opposite direction to the first direction (i.e., backward), so as to automatically retract the obstruction device 220 into the housing 100, thereby improving the automation level of the test equipment and enhancing operational convenience. When the obstruction device 220 returns to the housing 100 and no longer obstructs the vehicle-mounted sensor, it is in an unobstructed state (or initial state).

[0052] The testing equipment provided in this embodiment can be installed above the vehicle-mounted sensor by setting a housing 100 connected to the vehicle-mounted sensor. By setting a testing module 200 in the housing 100 and configuring a driving device 210 and a blocking device 220 in the testing module 200, during the open road testing phase, when the vehicle-mounted sensor is being blocked, the driving device 210 can drive the blocking device 220 to move to the blocking state, so that at least a part of the blocking device 220 can extend from the opening end 100a of the housing 100. The part of the blocking device 220 extending from the opening end 100a can fall down under the action of gravity to block the sensor, thus constructing a test scenario in which the sensor is blocked. This embodiment is not limited by the site or the vehicle state (such as automatic driving state or stationary state), and has high flexibility. Moreover, this embodiment sets up multiple testing modules, and combined with the control of the extension degree of the blocking device, it can realize the construction of multi-directional and multi-area test scenarios, which is conducive to achieving comprehensive testing.

[0053] In some embodiments, to enhance the richness of the constructed scenarios, multiple test modules 200 may be provided, arranged side-by-side along a second direction (e.g., from right to left), with the second direction perpendicular to the first direction. Figure 3 and Figure 4 As shown, by controlling the movement of the blocking devices 220 of different test modules 200, it is possible to block the vehicle-mounted sensors from different or multiple directions, thereby improving the comprehensiveness of the test. The specific structures of the multiple test modules 200 can be the same or similar.

[0054] In specific implementation, the obstruction device 220 of the test module 200 located on the left side of the vehicle sensor can be controlled to move to construct a scenario where the left sensing range of the vehicle sensor is obstructed; the obstruction device 220 of the test module 200 located directly above the vehicle sensor can also be controlled to move to construct a scenario where the sensing range in front of the vehicle sensor is obstructed; the obstruction device 220 of the test module 200 located on the right side of the vehicle sensor can also be controlled to move to construct a scenario where the right sensing range of the vehicle sensor is obstructed; and the obstruction devices 220 of the test module 200 located on the left (or right) side and in front of the vehicle sensor can also be controlled to move to construct a scenario where the sensing range on the left (or right) side and in front of the vehicle sensor is obstructed.

[0055] In some embodiments, the drive device 210 and the shielding device 220 are detachably connected. For example, the drive device 210 can be detachably connected to the shielding device 220 by means of adhesive, magnetic attraction, vacuum adsorption, or snap-fit. This reduces maintenance costs when the drive device 210 or the shielding device 220 needs to be removed and replaced due to malfunctions or other factors. Furthermore, it facilitates the replacement of different types or shapes of shielding devices 220 according to actual needs, thereby further improving the comprehensiveness of the test scenarios that the testing equipment can construct and reducing testing costs.

[0056] like Figures 2 to 4 As shown, in some embodiments, the shielding device 220 includes: a plurality of shielding plates 221, each shielding plate 221 having a first surface and a second surface disposed opposite to each other along its thickness direction; when the shielding device 220 is in an unshielded state, the plurality of shielding plates 221 are arranged along a first direction, and the second surface is located on the side of the first surface facing the direction of gravity; and a flexible connector 222 connected to two adjacent shielding plates 221.

[0057] For example, when the shielding device 220 is in an unshielded state, multiple shielding plates 221 can be laid on the bottom plate of the housing, and the multiple shielding plates 221 are laid sequentially at intervals in a back-to-forward direction. At this time, the first surface of the shielding plate 221 is the upper surface, and the second surface of the shielding plate 221 is the lower surface.

[0058] The shield 221 can be in a regular shape, such as a quadrilateral plate, a triangular plate, a circular plate, or a hexagonal plate.

[0059] Optionally, the shield 221 is rectangular, meaning it is a rectangular plate. The area obstructed by the vehicle sensor is positively correlated with the number of hanging shields 221. This makes it easy to calculate the obstruction area and facilitates quantitative testing under obstructed conditions.

[0060] Optionally, at least two of the shields 221 are the same size, that is, at least two of the shields 221 cover the same area of ​​the vehicle sensor, in order to reduce the difficulty of quantization.

[0061] The shield 221 can be made of a material capable of blocking the sensor's sensing signal. The specific material used for the shield 221 can be selected according to actual needs, and this embodiment does not limit it.

[0062] For example, the shield 221 may include an absorption layer and / or a reflective layer, wherein the absorption layer is made of a material capable of absorbing the wavelength of the corresponding vehicle sensor, and the reflective layer is made of a material capable of reflecting the wavelength of the corresponding vehicle sensor.

[0063] Optionally, to ensure the shielding effect, the shielding plate 221 may include an absorption layer and a reflective layer. When the shielding plate 221 is laid inside the housing 100 (that is, when the shielding device 220 is in an unshielded state), the reflective layer is located on the side of the absorption layer facing the direction of gravity (that is, below); when the shielding plate 221 extends out of the housing 100 and hangs down, the reflective layer is located on the side of the absorption layer facing the vehicle sensor.

[0064] Typically, vehicle-mounted sensors can include at least one of the following: millimeter-wave radar, lidar, and ultrasonic radar. Taking millimeter-wave radar as an example, the reflective layer can be a metal plate with high reflectivity to millimeter waves, and the absorption layer can be a carbon-based material that absorbs millimeter waves. Taking lidar as an example, the reflective layer can be a frosted metal layer, and the absorption layer can be made of carbon black coating or an infrared absorption film. Taking ultrasonic radar as an example, the reflective layer can be a metal plate with a smooth surface, and the absorption layer can be made of a porous foam layer or an acoustic metamaterial.

[0065] Two adjacent baffles 221 can be connected by a flexible connector 222. The flexible connector 222 can be made of a flexible material, such as a flexible fabric. The flexible connector 222 can be bonded to the two adjacent baffles 221.

[0066] This embodiment sets multiple shielding plates 221 in the shielding device 220 and connects two adjacent shielding plates 221 through flexible connectors 222. The shielding area can be controlled by controlling the number of shielding plates 221 extending out of the outer shell 100. This makes it easy to achieve quantitative testing, improves testing efficiency and repeatability, and enables shielding testing under different shielding areas, improving the comprehensiveness of the test and enabling more accurate and comprehensive problem detection.

[0067] In some examples, the flexible connector 222 is connected to the second surface of the baffle 221. In this way, the flexible connector 222 can both connect two adjacent baffles 221 and ensure that relative movement can occur between the two adjacent baffles 221. For example, when one baffle 221 protrudes from the housing 100 and the other baffle 221 is located inside the housing 100, the baffle 221 protruding from the housing 100 can be folded downward relative to the baffle portion located inside the housing 100.

[0068] Optionally, the first distance between two adjacent baffles 221 is less than or equal to a preset distance to restrict one baffle 221 from folding relative to the other baffle 221 in the direction toward the first surface (i.e. upward), ensuring that the baffle device 220 can bend to one side, that is, that the baffle 221 can be folded downward, thereby ensuring the reliability of the baffle function.

[0069] Specifically, when the first distance between two adjacent baffles 221 is less than or equal to a preset distance, if the baffle 221 extending out of the outer casing 100 is folded upward relative to the baffle 221 located inside the outer casing 100, the edges of the two baffles 221 will make physical contact, preventing further relative movement between the two baffles 221. The preset distance is less than the thickness of the baffle 221; for example, when the thickness of the baffle 221 is 2mm (mm represents millimeters), the preset distance can be any two of 0.1mm, 0.5mm, 1.0mm, 1.5mm, or 1.9mm.

[0070] It is understood that the specific preset distance can be set according to actual needs. This embodiment does not limit it here, as long as the above functions can be achieved.

[0071] In other examples, the flexible connector 222 may also be connected to the first surface of the baffle 221; wherein the first gap between two adjacent baffles 221 may be relatively large to ensure that when one baffle 221 extends out of the housing 100 and the other baffle 221 is inside the housing 100, the baffle 221 extending out of the housing 100 can be folded downward relative to the baffle portion inside the housing 100.

[0072] Optionally, when the shielding device 220 is in an unshielded state, at least one test module 200 has a limiting member at the end (i.e., the front end) of the shielding device 220 near the opening end 100a. The limiting member can be prismatic, cylindrical, or conical, etc., and can abut against the housing 100 to limit the shielding device 220 from moving further toward the direction of the driving device 210, avoid excessive retraction of the shielding device 220, and ensure that the shielding device 220 is in a preset initial position.

[0073] For example, for two test modules 200 on opposite sides of the housing 100, the shielding device 220 has a limiting member at the end near the opening 100a, which abuts against the corresponding side plate of the housing 100. Specifically, for the test device near the right side plate of the housing 100, the shielding device 220 has a limiting member extending to the right on the right side of the shielding plate 221 at the front end; for the test device near the left side plate of the housing 100, the shielding device 220 has a limiting member extending to the left on the left side of the shielding plate 221 at the front end.

[0074] For example, a limiting member is provided at the end of the multiple test modules 200 near the opening end 100a. The limiting member extends downward and is used to abut against the front end face of the bottom plate of the housing 100.

[0075] Optionally, the two opposite side panels (i.e., the left and right side panels) of the outer casing 100 are each provided with a mounting groove 100b. A guide baffle 103 is inserted into the mounting groove 100b. The guide baffle 103 is located above the cover plate 221 that does not extend out of the outer casing 100, and the guide baffle 103 can be parallel to the cover plate 221 located in the outer casing 100. The mounting groove 100b extends forward to facilitate the installation and removal of the guide baffle 103. The guide baffle 103 is used to constrain the posture and movement path of the cover plate 221, restricting the cover plate 221 from folding upward, thereby guiding the cover plate 221 extending out of the outer casing 100 to fold downward and hang down, and also guiding the cover plate 221 to accurately retract into the outer casing 110. The guide baffle 103 also acts as a stop when the cover plate 221 folds. The distance between the guide baffle 103 and the cover plate 221 can be set according to actual needs.

[0076] The shielding plates 221 of the shielding devices 220 near the two side plates of the outer shell 100 can respectively cooperate with the two guide grooves to guide the shielding devices 220 to move in a preset direction and provide good support for the shielding devices 220.

[0077] In some embodiments, at least a portion of the obstruction device 220 is irregularly shaped to create test scenarios where irregularly shaped obstacles such as leaves and plastic bags obstruct the onboard sensors.

[0078] For example, among the plurality of shielding plates 221 included in the shielding device 220, at least one shielding plate 221 is irregularly shaped. Taking a test scenario of constructing a leaf to shield an on-board sensor as an example, the structural shape of the plurality of shielding plates 221 connected by the flexible connector 222 can approximate the shape of a leaf. For example, all of the plurality of shielding plates 221 of the shielding device 220 can be irregularly shaped. Alternatively, at least one shielding plate 221 of the shielding device 220 can be rectangular, and one of the rectangular shielding plates 21 is used to connect to the driving device 210.

[0079] At least one of the irregularly shaped shielding plates 221 has an irregular geometric shape on its edge profile, such as a serrated or wavy shape, to simulate the shape of an irregularly shaped obstacle. Alternatively, the surface of at least one irregularly shaped shielding plate 221 has raised or recessed textures to simulate the texture of an irregularly shaped obstacle.

[0080] In other embodiments, the shielding device 220 may also include only one shielding plate, which may be rectangular, circular or irregular in shape, and can be set according to actual needs.

[0081] In other embodiments, the shielding device 220 may also be a flexible plate. When the shielding device 220 is in an unshielded state, a counterweight may be provided at the front end of the shielding device 220 closer to the opening end 100a to ensure that at least part of the shielding device 220 can hang down when it extends from the opening end 100a.

[0082] It is understandable that when constructing a test scenario where a conventionally shaped obstacle obstructs the vehicle-mounted sensor, a rectangular obstruction device 220 can be installed in the test equipment; when constructing a test scenario where an irregularly shaped obstacle obstructs the vehicle-mounted sensor, an obstruction device 220 that is at least partially adapted to the shape of the irregular obstacle can be installed in the test equipment. The obstruction device 220 is detachably connected to the drive device 210, making the installation and removal of the obstruction device 220 convenient and easy to replace.

[0083] like Figures 5 to 8 As shown, in some embodiments, the testing equipment further includes a pushing device 230, connected to the driving device 210 and detachably connected to the blocking device 220. The pushing device 230 can be detachably connected to the blocking device 220 in any of the following ways: magnetic attraction, vacuum adsorption, threaded connection, fastening connection, etc. In this embodiment, by detachably connecting the blocking device 220 to the pushing device 230, the blocking device 220 can be replaced at any time as needed. This facilitates testing scenarios with regularly shaped obstacle areas as well as testing scenarios with irregularly shaped obstacles such as leaves and plastic bags, resulting in a wider testing range and more comprehensive testing.

[0084] like Figures 9 to 11 And continue to refer to Figures 5 to 8In some examples, the pushing device 230 includes: a connecting beam 231 extending along a first direction and having a first end and a second end spaced apart along the first direction, the first end being disposed near the fixed end of the housing 100, the fixed end of the housing 100 being opposite to the opening end 100a; a mounting plate 232 fixedly connected to the connecting beam 231 and disposed near the first end of the connecting beam 231; the mounting plate 232 being detachably connected to the shielding device 220; a mounting ear 233 fixedly connected to the connecting beam 231 and disposed near the second end of the connecting beam 231; and the mounting ear 233 being connected to the driving device 210.

[0085] The cross-section of the connecting beam 231 can be I-shaped or box-shaped to improve bending resistance; alternatively, the connecting beam 231 can also be rectangular plate-shaped or long rod-shaped to simplify the structure. The length direction of the connecting beam 231 is parallel to the front-to-back direction to facilitate connection with the shielding device 220 and the subsequent test nozzle 240. The connecting beam 231 has a first end and a second end, the first end of which can also be called the rear end and the second end of which can also be called the front end.

[0086] The portion of the connecting beam 231 near its rear end can be connected to the mounting plate 232. The mounting plate 232 is a flat plate. The mounting plate 232 can be polygonal, such as rectangular, or circular. The mounting plate 232 can be perpendicularly connected to the connecting beam 231, and the mounting plate 232 is folded downwards relative to the connecting beam 231 so that the shielding device 220 is located below the subsequent test nozzle 240, preventing interference between the two. Optionally, the connecting beam 231 and the mounting plate 232 can also be connected by a reinforcing structure, such as reinforcing ribs, to improve connection reliability and increase the load-bearing capacity of the pushing device 230.

[0087] Mounting plate 232 can be detachably connected to shielding device 220 by means of magnetic attraction, vacuum adsorption, fastening or plugging.

[0088] In some examples, the mounting plate 232 is provided with at least two first mounting holes 232a, the axial direction of the first mounting holes 232a is parallel to the first direction, and the two first mounting holes 232a are spaced apart along the first direction.

[0089] The shielding device 220 is provided with a plug-in portion, which is inserted into the first mounting hole 232a. In this way, the wall of the first mounting hole 232a can support the shielding device 220 to prevent it from shifting downward under the action of gravity. The plug-in portion can be fixedly provided on the rear side of the shielding plate 221 located at the rear end of the shielding device 220.

[0090] For example, the insertion part includes a cylindrical body, and the shape of the first mounting hole 232a can be adapted to the cylindrical body; for example, when the cylindrical body is cylindrical, the first mounting hole can be a circular hole.

[0091] Optionally, the insertion part is magnetically fixed to the first mounting hole 232a. For example, the columnar body can be made of metal, and a magnet capable of attracting the columnar body can be provided in the first mounting hole 232a; or, the columnar body can be made of magnet, and the hole wall of the first mounting hole 232a can be made of metal.

[0092] Optionally, the cylindrical body is threadedly connected to the first mounting hole. For example, the cylindrical body may have a threaded section, located near the end of the cylindrical body away from the shield plate 221. The threaded section of the cylindrical body can pass through the first mounting hole 232a and engage with a nut. In this example, the structure of the insertion part and the first mounting hole 232a is relatively simple, the connection between the insertion part and the mounting plate 232 is highly reliable, and operation is convenient.

[0093] Optionally, the insertion part engages with the first mounting hole 232a. The cylindrical body can be connected to an elastic claw, which can form a snap-fit ​​with the cylindrical body. Under external force, the elastic claw can be in a retracted state and move with the cylindrical body until it passes through the first mounting hole 232a, releasing the elastic claw, which then abuts against the rear surface of the mounting plate 232, achieving engagement. When disassembling the blocking device 220, under external force, the elastic claw can be in a retracted state and move with the cylindrical body until the insertion part disengages from the first mounting hole 232a. Of course, the specific structure of the snap-fit ​​is not limited to this; this embodiment is merely illustrative.

[0094] Optionally, the plug-in portion engages with the first mounting hole 232a. The side wall of the plug-in body is provided with an elastic protrusion, the deformation direction of which is perpendicular to the axial direction of the plug-in body; the elastic protrusion is located near the end of the plug-in body away from the shielding plate 221; after the end of the plug-in body away from the shielding plate 221 extends out of the first mounting hole 232a, the elastic protrusion can abut against the rear surface of the mounting plate 232 to achieve engagement.

[0095] This example, through the above settings, improves the ease of operation of assembling and disassembling the shielding device 220, and has a simple structure.

[0096] In other examples, the shielding plate 221 at the rear end of the shielding device 220 can also be directly magnetically fixed to the mounting plate 232. Alternatively, the shielding plate 221 at the rear end of the shielding device 220 can be bonded to the mounting plate 232 via the adhesive layer 102.

[0097] The portion of the connecting beam 231 near its front end can be connected to the mounting ear 233. The mounting ear 233 can be connected perpendicularly to the connecting beam 231. The mounting ear 233 is folded upward relative to the connecting beam 231. The mounting ear 233 is provided with a third mounting hole, the axis of which is parallel to the first direction (i.e., the left-right direction). The connector 214 of the drive device 210 can be provided with a fourth mounting hole, which can be coaxially arranged with the third mounting hole, so that the connecting shaft 235 beam and the mounting ear 233 can be fixedly connected to the drive device 210 through the connecting shaft 235 passing through the third and fourth mounting holes. There can be one or more mounting ears 233. When there are multiple mounting ears 233, two of them are respectively located near the left and right sides of the connecting beam 231 to improve the connection reliability between the push device 230 and the drive device 210.

[0098] The connecting beam 231, mounting plate 232 and mounting ear 233 can be installed as a whole, or fixedly connected by welding or bolts.

[0099] This embodiment, through the above-described settings, not only facilitates the compactness and miniaturization of the testing equipment, but also enables the shielding device 220 to have a large stroke, meeting the needs of a variety of testing scenarios.

[0100] In some embodiments, the testing device further includes: a test nozzle 240 connected to a pushing device 230; the outlet of the test nozzle 240 is located on the side of the test nozzle 240 facing the direction of gravity, and the blocking device 220 is located on the side of the test nozzle 240 facing the direction of gravity.

[0101] The test nozzle 240 can be used to spray fluids such as water, muddy water, and sewage. The composition of the fluid sprayed by the test nozzle 240 may differ in different test scenarios; in such cases, simply changing the fluid source connected to the test nozzle 240 is sufficient. Optionally, a water mist nozzle can be used to simulate test scenarios such as fog or rain. In other examples, a high-pressure direct-fire nozzle can also be used to simulate test scenarios with strong impact.

[0102] The pushing device 230 can be used to transmit the driving force of the driving device 210 to the test nozzle 240 and the shielding device 220. The pushing device 230 can simultaneously drive the test nozzle 240 and the shielding device 220 to move, or it can drive the test nozzle 240 to move (disassembling the shielding device 220). In other examples, the test nozzle 240 can be detachably connected to the pushing device 230, and the pushing device 230 can also drive the shielding device 220 to move (disassembling the test nozzle 240).

[0103] For example, when it is necessary to construct a test scenario under rainy conditions, the shielding device 220 can be removed, and the driving device 210 can push the test nozzle 240 to a suitable position through the pushing device 230, so that the fluid sprayed by the test nozzle 240 can simulate the effect of rain on the vehicle sensor.

[0104] When a test scenario requiring obstacle obstruction is required, the drive unit 210 pushes the test nozzle 240 and the obstruction device 220 forward via the push device 230. The obstruction plate 221, extending from the opening end 100a of the housing 100 in the obstruction device 220, can fall downwards under gravity to obstruct the vehicle-mounted sensor. This can simulate obstacles obstructing the vehicle-mounted sensor from different directions, obstacles obstructing the sensor with different areas, or obstacles obstructing the sensor intermittently. In this case, no fluid needs to be supplied to the test nozzle 240. Since the test nozzle 240 is located above the obstruction plate 221, it will not affect the obstruction of the vehicle-mounted camera by the obstruction plate 221, eliminating the need for frequent disassembly of the test nozzle 240 and improving ease of use. Of course, in other examples, the test nozzle 240 can also be disassembled.

[0105] When a test scenario with rain and obstruction is required, the drive unit 210 pushes the test nozzle 240 and the shielding device 220 forward through the push device 230. The shielding plate 221 of the shielding device 220, which extends from the opening end 100a of the housing 100, can fall down under the action of gravity to shield the vehicle sensor and provide fluid to the test nozzle 240.

[0106] This embodiment can construct test scenarios for vehicle-mounted sensors under weather conditions such as rain by setting up test nozzle 240, which is convenient and low cost; and through test nozzle 240 and shielding telescopic device, test scenarios with obstacle shielding and rainwater combination can be constructed, or mixed tests such as test scenarios with intermittent obstacle shielding and rainwater combination can be constructed, which can comprehensively test the sensing effect of vehicle-mounted sensors.

[0107] The pushing device 230 further includes a mounting base 234, disposed near the second end of the connecting beam 231, fixedly connected to at least one of the mounting ear 233 or the connecting beam 231, and used for mounting the test nozzle 240. Taking the connection between the mounting base 234 and the connecting beam 231 as an example, the mounting base 234 can be integrally disposed with the connecting beam 231, or the mounting base 234 has a plate-shaped fixing part that extends rearward, the fixing part is mounted on the connecting beam 231, and the fixing part is fixed to the connecting beam 231 by welding, bonding or fastening.

[0108] A mounting base 234 is also provided at the front end of the connecting beam 231. The mounting base 234 can be located on the front side of the connecting beam 231, so that the test nozzle 240 is spaced apart from the front end face of the connecting beam 231, so as to prevent the connecting beam 231 from affecting the spraying effect of the test nozzle 240 and to prevent the test nozzle 240 from interfering with the shielding device 220. For example, the mounting base 234 is generally prismatic and has a central hole in which the test nozzle 240 is installed. A notch is provided on the rear side of the mounting base 234 for the water pipe 243 connected to the test nozzle 240 to pass through, and the water pipe 243 can pass under the connecting shaft 235.

[0109] This embodiment improves the structural compactness of the test module 200 by rationally setting the structure of the pushing device 230, reduces the installation difficulty of the test nozzle 240 and the shielding device 220, and ensures that the test nozzle 240 and the shielding device 220 do not interfere with each other.

[0110] like Figures 9 to 10 As shown, in some examples, the test nozzle 240 includes: a nozzle body 241, which has an inlet, a vortex chamber and an outlet, with the vortex chamber connected between the inlet and the outlet; wherein, the inlet is used to connect to a fluid source through a water pipe 243, and the vortex chamber is used to guide the incoming fluid to rotate, so that the fluid flowing out of the outlet is atomized.

[0111] The nozzle body 241 is generally cylindrical, for example, cylindrical. The water inlet can be located near the upper end of the nozzle body 241, and the water inlet can be located on the rear side of the nozzle body 241, so as to facilitate the laying and arrangement of the water pipe 243 connected to the water inlet.

[0112] The water outlet can be located at the lower end of the nozzle body 241, and multiple water outlets can be provided at the lower end of the nozzle body 241. These multiple water outlets can be evenly distributed, for example, they can be distributed in a dot matrix pattern. The number, size, and distribution of the water outlets can be set according to actual needs, and are not limited in this embodiment.

[0113] In this example, by using a test nozzle 240 with atomization function, common weather conditions such as fog or drizzle can be simulated relatively realistically, with low power consumption and low cost.

[0114] In some examples, the test nozzle 240 may also include an adjustment ring 242, which is rotatably connected to the nozzle body 241; the adjustment ring 242 is used to rotate under external action and adjust the geometric parameters of the fluid channel inside the vortex cavity to regulate the state of the fluid flowing out of the outlet.

[0115] The geometric parameters of the fluid channel inside the vortex cavity include at least one of the following: the inlet cross-sectional area of ​​the vortex cavity and the guiding angle of the vortex cavity. The specific shape and geometric parameters of the vortex cavity can be set according to actual needs, and are not limited in this embodiment.

[0116] An adjustment ring 242 can be provided on the outer surface of the nozzle body 241, corresponding to the vortex cavity. The adjustment ring 242 can be provided with several vertical ridges. Adjacent ridges have a second spacing, and multiple second spacings can be equal. Thus, when on-site personnel adjust the geometric parameters of the fluid channel inside the vortex cavity using the adjustment ring 242, there is a relatively large static friction between the adjustment ring 242 and the personnel's hands, improving operational convenience. Furthermore, the ridges can also indicate the degree of rotation of the adjustment ring 242, facilitating quick adjustment.

[0117] Optionally, the test nozzle 240 can be connected to a delivery pump via a water pipe 243, and the delivery pump can be connected to a fluid source via a hose. This allows the delivery pump to control the rate at which fluid enters the test nozzle 240. The delivery pump can be a pump located inside a vehicle.

[0118] In the test scenario, when the test nozzle 240 is used to spray water or mist, the delivery pump can be connected to a fluid source that can provide water (e.g., a water tank); when the test nozzle 240 is used to spray muddy water, the delivery pump can be connected to a fluid source that can provide muddy water (e.g., a muddy water tank); when the test nozzle 240 is used to spray sewage, the delivery pump can be connected to a fluid source that can provide sewage (e.g., a sewage tank).

[0119] This example, by setting the adjustable test nozzle 240, can achieve a variety of test items such as water spray, mist, muddy water, and sewage. It can construct test scenarios for vehicle-mounted sensors under weather conditions such as rain or fog, further improving the comprehensiveness of the test.

[0120] like Figure 2 As shown, in some embodiments, in order to improve the control accuracy of the movement stroke of the blocking device 220, the driving device 210 includes: a driving motor 211, a reducer 212, a telescopic rod 213, and a connector 214; the driving motor 211 is disposed near the fixed end of the housing 100; the fixed end of the housing 100 is opposite to the open end 100a; the reducer 212 is connected between the driving motor 211 and the telescopic rod 213, and the end of the telescopic rod 213 away from the reducer 212 is connected to the connector 214.

[0121] The drive motor 211 can be a high-precision motor. The drive motor 211 is fixed in the housing 100 by a motor mounting bracket 215. For example, the drive motor 211 is connected to the motor mounting bracket 215 by bolts or screws, and the motor mounting bracket 215 is connected to the housing 100 by bolts or screws. The specific structure of the motor mounting bracket 215 can be set according to actual needs.

[0122] A reducer 212 is provided at the output end of the drive motor 211. When the drive motor 211 outputs rotational motion, the reducer 212 can also convert the rotational motion output by the drive motor 211 into linear motion; or, the drive motor 211 can be a linear motor.

[0123] The telescopic rod 213 may include a first rod body and a second rod body, the axes of which are parallel to a first direction. The first rod body may be fixedly connected to the reducer 212, and the second rod body may be inserted into the central hole of the first rod body. The second rod body is also fixedly connected to the connector 214. The axial dimensions of the first and second rod bodies can be appropriately set to meet the travel requirements of the blocking device 220.

[0124] In some examples, the test equipment also includes: a detection element for detecting the current position of the connector 214; and a control unit electrically connected to the detection element and the drive motor 211 respectively, for adjusting the operating parameters of the drive motor 211 according to the motion stroke detected by the detection element.

[0125] The detection unit may include a displacement sensor, which can be mounted on the connector 214 to detect the movement stroke of the connector 214, thereby obtaining the movement stroke of the blocking device 220, and further obtaining the number of blocking plates 221 extending out of the outer shell 100 in the blocking device 220, so as to obtain a more accurate occlusion area of ​​the vehicle-mounted sensor. Alternatively, the detection unit may include a camera, which can be mounted on a fixed structure such as the reducer 212, or on a movable structure such as the connector 214, so that the control unit can determine the movement stroke of the connector 214 based on the image captured by the camera, thereby obtaining the movement stroke of the blocking device 220, and further obtaining the number of blocking plates 221 extending out of the outer shell 100 in the blocking device 220.

[0126] The control unit can be a standalone electronic device, or it can be integrated into a host computer that is electrically connected to the drive motor 211, or it can be integrated into the drive motor 211.

[0127] The testing equipment provided in this embodiment has a simple structure and high reliability. Compared with constructing extreme equipment cabins in closed test fields, it has a lower cost and is not affected by the environment or location. Test scenarios can be constructed anywhere on open roads, whether the vehicle is in autonomous driving mode or stationary, improving testing convenience. In addition, this embodiment can construct test scenarios with obstacles covering multiple directions and areas, as well as test scenarios with irregular obstacles. It can construct test scenarios for vehicle sensors under weather conditions such as rain or fog, and can construct test scenarios with obstacles covering and rain, as well as test scenarios with intermittent obstacles covering and rain. The testing range is wider and more comprehensive, and it can comprehensively test the perception effect of vehicle sensors, which is of great significance for testing under extreme weather conditions.

[0128] For the parts of the above embodiments that do not describe the testing equipment, various technical solutions that are now and will be known in the future to those skilled in the art can be used, and will not be described in detail here.

[0129] In the description of this specification, it should be understood that the terms "length", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "top", "bottom", "inner", "outer", "axial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0130] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means two or more, unless otherwise explicitly specified.

[0131] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0132] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0133] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this disclosure. To simplify the disclosure, specific examples of components and arrangements have been described above. Of course, these are merely examples and are not intended to limit the scope of this disclosure. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0134] The specific embodiments described above do not constitute a limitation on the scope of protection of this disclosure. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A testing device for vehicle-mounted sensor, comprising: a housing configured to be connected with a vehicle-mounted sensor; the housing has an open end; a testing module installed in the housing; the testing module has at least one; wherein the testing module comprises a driving device and a shielding device, the driving device is configured to drive the shielding device to move in a first direction, so that the shielding device is switched from an unshielded state to a shielded state; when in the shielded state, at least part of the shielding device extends from the open end of the housing, and the extended part can fall under the action of gravity to shield the vehicle-mounted sensor; when in the unshielded state, the shielding device is located in the housing.

2. The test apparatus of claim 1, wherein, the testing module has a plurality of, a plurality of the testing module is arranged side by side in a second direction, the second direction is perpendicular to the first direction.

3. The test apparatus of claim 1, wherein, the shielding device comprises: a shielding plate having a first surface and a second surface oppositely arranged along the thickness direction thereof; when the shielding device is in the unshielded state, a plurality of the shielding plates are arranged along the first direction, and the second surface is located on the side of the first surface facing the direction of gravity; a flexible connecting piece connected with two adjacent shielding plates.

4. The test apparatus of claim 3, wherein, the flexible connecting piece is connected with the second surface of the shielding plate; the first spacing between the two adjacent shielding plates is less than or equal to a preset distance, so as to limit one of the shielding plates from folding relative to the other shielding plate in the direction towards the first surface.

5. The test apparatus of claim 3, wherein, at least two of the shielding plates are of the same size; and / or, the shielding plate is rectangular.

6. The test apparatus of claim 3, wherein, the housing has two opposite side plates respectively provided with mounting grooves; the housing is provided with a guide baffle inserted in the mounting groove; the guide baffle is parallel to the shielding plate to guide the movement of the shielding plate.

7. The test apparatus of claim 3, wherein, at least one of the shielding plates is of a special shape. 8.The testing device according to claim 1, further comprising: a pushing device connected with the driving device and detachably connected with the shielding device.

9. The test apparatus of claim 8, wherein, the pushing device comprises: a connecting beam extending along the first direction and having a first end and a second end spaced apart along the first direction, the first end being arranged close to a fixed end of the housing opposite to the open end; a mounting plate fixedly connected with the connecting beam and arranged close to the first end of the connecting beam; the mounting plate is detachably connected with the shielding device; a mounting ear fixedly connected with the connecting beam and arranged close to the second end of the connecting beam; the mounting ear is connected with the driving device.

10. The test apparatus of claim 9, wherein, the mounting plate is provided with at least two first mounting holes, the axial direction of the first mounting hole is parallel to the first direction, and the two first mounting holes are spaced apart along the first direction; the shielding device is provided with a plug-in part, the plug-in part comprises a columnar body inserted into the first mounting hole.

11. The test apparatus of claim 10, wherein, the plug-in part is magnetically fixed, clamped or screw-connected with the first mounting hole.

12. The test apparatus of claim 10, wherein, the columnar body is provided with a threaded segment for penetrating through the first mounting hole and cooperating with a nut. 13.The testing device according to claim 8, further comprising: The test nozzle is connected with the pushing device; The water outlet of the test nozzle is located on the side of the test nozzle facing the direction of gravity, and the shielding device is located on the side of the test nozzle facing the direction of gravity.

14. The test apparatus of claim 13, wherein, The pushing device further comprises: A mounting seat is arranged near the second end of the connecting beam of the pushing device, is fixedly connected with at least one of the mounting lug and the connecting beam of the pushing device, and is used for mounting the test nozzle.

15. The test apparatus of claim 13, wherein, The test nozzle comprises: A nozzle body is provided with a water inlet, a vortex chamber and the water outlet, and the vortex chamber is connected between the water inlet and the water outlet; wherein the water inlet is used for being connected with a fluid source through a water pipe, and the vortex chamber is used for guiding the entering fluid to rotate, so that the fluid flowing out of the water outlet is atomized.

16. The test apparatus of claim 15, wherein, The test nozzle further comprises: An adjusting ring is rotationally connected with the nozzle body; the adjusting ring is used for adjusting the geometric parameters of the fluid passage inside the vortex chamber, so as to adjust the state of the fluid flowing out of the water outlet.

17. The test apparatus of any one of claims 1 to 16, wherein, The driving device comprises a driving motor, a speed reducer, a telescopic rod and a connecting head; The driving motor is arranged near the fixed end of the shell; the fixed end of the shell is opposite to the open end; The speed reducer is connected between the driving motor and the telescopic rod, and one end of the telescopic rod away from the speed reducer is connected with the connecting head.

18. The test apparatus of any one of claims 1 to 16, wherein, The driving device is further used for driving the shielding device to move in the direction opposite to the first direction, so as to switch the shielding device from the shielding state to the non-shielding state.

19. The test apparatus of any one of claims 1 to 16, wherein, An adhesive layer is arranged on the surface of the shell facing the vehicle-mounted sensor; Or, the shell is used for detachably connecting with the vehicle-mounted sensor.

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