Stepped vehicle-mounted BOX function test equipment and method

Abstract

The invention discloses stepped vehicle-mounted BOX function test equipment and a stepped vehicle-mounted BOX function test method. The function test equipment comprises a stepped test cabinet and at least one modular test fixture. The test cabinet is provided with a plurality of mounting platforms which are arranged in a stepped and staggered manner, each platform is provided with a plurality of test stations, and a central control unit, a shared function test module and a standardized electrical interface are integrated in each platform; the test tool is detachably installed on the station and is provided with a positioning detection assembly and a plugging test assembly. And the function test module is electrically connected with the test fixture through the test cabinet and is in signal communication with the plugging test assembly so as to perform data interaction with the vehicle-mounted BOX during test. According to the invention, the parallel test of a plurality of vehicle-mounted BOXs and the rapid line change test of different types of products are realized by constructing the architecture of the universal platform and the special jig and combining the stepped spatial layout and the standardized rapid change interface, so that the test efficiency is high, and the space utilization rate is high.

Description

Technical Field

[0001] This invention relates to the field of automotive electronics testing technology, and in particular to a stepped vehicle-mounted BOX functional testing device and method. Background Technology

[0002] With the rapid development of intelligent connected vehicle technology, the reliability and stability of the in-vehicle box (BOX), as the core hub for information interaction between the vehicle and the outside world, are of paramount importance. In the automotive manufacturing and quality inspection processes, comprehensive functional testing of the in-vehicle BOX is a crucial step in ensuring product quality.

[0003] Currently, common vehicle-mounted BOX testing methods mainly rely on manual single-station testing or semi-automatic testing equipment. These traditional methods have the following obvious drawbacks: (1) Low testing efficiency: The single-station serial testing mode has low testing throughput, which cannot meet the needs of large-scale, fast-paced production and quality inspection in the automotive industry. (2) Poor equipment versatility and high replacement costs: Testing equipment is usually designed for a single vehicle model or type, and is a "dedicated machine". When the product is updated or a new product category needs to be tested, the equipment often needs to be significantly modified or even repurchased, resulting in high equipment investment costs and long production line switching cycles. (3) Low space utilization and inconvenient operation and management: The parallel arrangement of multiple single-station equipment will occupy a large amount of valuable workshop floor area. At the same time, the planar layout limits the operator's field of vision, making it difficult to observe and manage the status of multiple stations at the same time, which is not conducive to parallel operation. (4) Low degree of automation in the testing process and difficulty in ensuring consistency: The testing process involves a large number of manual operations such as loading, insertion, and starting, which not only has high labor intensity, but also easily introduces human error, resulting in a decrease in the reliability and repeatability of the test results, affecting the stable judgment of product quality.

[0004] Therefore, there is an urgent need in this field for an automated testing solution that can simultaneously improve testing efficiency, enhance equipment flexibility, optimize space and operation management, and ensure a high degree of consistency in the testing process. Summary of the Invention

[0005] This invention provides a stepped vehicle-mounted BOX functional testing device and method to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: The first aspect of the present invention provides a stepped vehicle-mounted BOX functional testing device, comprising: The stepped test cabinet has multiple installation platforms arranged in a stepped manner and staggered in the height direction, and each installation platform is provided with multiple test stations; wherein, the stepped test cabinet integrates a central control unit, at least one functional test module that can be shared and called by multiple test stations, and a standardized electrical interface configured independently for each test station. At least one test fixture is detachably mounted on any of the test stations via a quick-release structure; the test fixture includes: a test adapter backplate for connecting to a standardized electrical interface on the test station; a product positioning detection component for detecting the in-situ status and placement posture of the vehicle-mounted BOX; and a plug-in test component for physically docking with the port of the vehicle-mounted BOX to establish a test signal path. At least one of the functional test modules is electrically connected to the test fixture through the stepped test cabinet and is signal-connected to the plug-in test component for data interaction with the vehicle-mounted BOX during testing. The multiple installation platforms are arranged in a stepped and staggered manner to optimize the operating space of multiple test stations and realize the visual management of parallel operations; the quick-release structure cooperates with the standardized electrical interface to quickly replace the test fixture, thereby adapting to different models of vehicle-mounted BOX testing.

[0007] Preferably, the quick-release structure includes: A positioning pin is provided on the surface of the mounting platform for coarse positioning of the test fixture; Multiple locking pins are distributed around the installation platform and switch between working and idle states; In the working state, the multiple locking pins are elastically stretched and abut against the perimeter of the test fixture to restrict the position of the test fixture; in the idle state, the multiple locking pins return to their original state.

[0008] Preferably, the functional testing module includes at least one of a vehicle bus simulation module, an audio / video signal generation module, and a network communication testing module; The functional testing module establishes a test connection with any of the test stations through the configuration of the central control unit.

[0009] Preferably, it further includes: A barcode scanning and identification device is installed at each of the test stations for scanning and identifying the vehicle-mounted BOX. A set of start / stop buttons is provided on one side of each of the test stations to allow operators to start the test process in manual test mode.

[0010] Preferably, the test cabinet also integrates at least one set of original vehicle signal simulation components, which include at least one of an in-vehicle camera, an in-vehicle display screen, and an in-vehicle antenna; The test cabinet is equipped with an independent original vehicle part interface for each test station, and the test adapter backplate of the test fixture is equipped with a corresponding original vehicle signal adapter port. When the test fixture is installed on the test station through the quick-release structure, the original vehicle signal adapter port establishes an electrical connection with the original vehicle accessory interface, so that the original vehicle signal simulation component forms a closed-loop test circuit with the corresponding port of the vehicle BOX under test through the plug-in test component.

[0011] Preferably, the insertion / removal test assembly includes a contoured test head driven by a cylinder and having a floating structure, used to automatically insert and disconnect with the electrical connector of the vehicle-mounted BOX.

[0012] Preferably, the floating structure of the contour test head is a two-stage floating structure, including a first floating unit for compensating for radial deviation and a second floating unit for compensating for axial deviation.

[0013] Preferably, the test fixture further includes a pressure claw cylinder assembly for pressing the vehicle-mounted BOX during the test.

[0014] A second aspect of the present invention provides a method for testing the functionality of an in-vehicle box using the aforementioned testing equipment, comprising the following steps: According to the model of the vehicle-mounted BOX to be tested, the corresponding test fixture is installed into any available test station of the stepped test cabinet through a quick-release structure. The product positioning detection component of the test fixture confirms that the vehicle-mounted BOX under test is placed in place. Control the movement of the plug-in / plug-out test component to establish a physical connection with the interface of the vehicle-mounted BOX; Through the established physical connection, at least one functional test module is controlled to interact with the vehicle-mounted BOX to perform functional tests on the vehicle-mounted BOX. After the test, control all components to reset and remove the vehicle-mounted BOX.

[0015] Preferably, the testing method supports both manual testing mode and automatic testing mode; In the manual testing mode, the tester performs the steps of loading and unloading the vehicle-mounted BOX, and the test process is automatically triggered after it is placed in place. In the automatic testing mode, the robotic arm performs the steps of loading and unloading the vehicle-mounted BOX, and automatically triggers the testing process after it is placed in place.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The embodiments of the present invention adopt a stepped one-to-many layout design, which supports multiple test stations to work in parallel and independently, realizes the leap from serial testing to parallel testing, greatly improves the test throughput per unit time, and meets the needs of large-scale production.

[0017] (2) The embodiments of the present invention creatively adopt an architecture that combines a universal test cabinet platform with a quickly replaceable dedicated test fixture. When testing different product models, only the corresponding modular fixture needs to be replaced (achieved through a quick-release structure), while the universal cabinet and its expensive internal shared test resources can be fully reused. As a result, the changeover time is greatly shortened, and the cost of repeated equipment investment due to product iteration is significantly reduced.

[0018] (3) The embodiments of the present invention make full use of vertical space and reduce the floor area occupied by the equipment by adopting a stepped staggered design for the testing platform. In addition, the staggered arrangement ensures that the operating areas of each layer do not obstruct each other, making the status of all workstations clear at a glance, which facilitates centralized monitoring and intervention by operators, and improves the efficiency of human-machine interaction and the convenience of equipment management.

[0019] (4) In this embodiment of the invention, by integrating original vehicle signal simulation components (such as cameras and displays) in the cabinet and designing standard interfaces to form a closed-loop test circuit with the BOX under test through a fixture, the real vehicle signal environment can be simulated. In addition, the precision plug-in mechanism with two-level floating compensation function ensures the accuracy and reliability of the test connection, thereby guaranteeing the accuracy of the test results.

[0020] (5) The embodiments of the present invention integrate a central control unit, automatic barcode scanning, sensor positioning, and pneumatic actuators, realizing full automation of the entire process from material feeding, identification, docking to testing, judgment, and data uploading. As a result, human intervention is minimized, ensuring a high degree of consistency in the testing process and traceability of test data, thereby improving the overall quality control level. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a stepped vehicle-mounted BOX functional testing device provided in the first embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a stepped vehicle-mounted BOX functional testing device provided in the first embodiment of the present invention; Figure 2A This is a schematic diagram of the functional testing module in the first embodiment of the present invention; Figure 3 This is a schematic diagram of the installation platform in the first embodiment of the present invention; Figure 4 This is a schematic diagram of the test fixture in the first embodiment of the present invention; Figure 5 This is a schematic diagram of the product positioning detection component in the first embodiment of the present invention; Figure 6 This is a schematic diagram of the insertion / removal test assembly in the first embodiment of the present invention; Figure 7 The flowchart illustrates a stepped vehicle-mounted BOX function testing method provided in the second embodiment of the present invention.

[0022] In the accompanying drawings, the reference numerals indicate: 100. Test cabinet; 101. Installation platform; 102. Test station; 103. Positioning pin; 104. Locking pin; 110. Central control unit; 120. Functional test module; 130. Standardized electrical interface; 121. CAN box; 122. Ethernet box; 140. Original vehicle signal simulation component; 150. Code scanning and identification device; 160. Function start / stop button group; 200. Test fixture; 201. Test adapter backplate; 202. Product positioning detection assembly; 203. Insertion and removal test assembly; 202a. In-situ sensor; 202b. Horizontal sensor; 202c. Positioning block; 203a. Cylinder; 203b. Contouring test head; 204. Claw cylinder assembly; 300. In-vehicle BOX. Detailed Implementation

[0023] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] The core idea of ​​this invention is to construct a highly integrated testing system that is "universal in platform, dedicated in execution, centralized in resources, and automated in process." Specifically, a universal test cabinet with a tiered physical layout is designed as a fixed platform, integrating all common test resources and control cores. Simultaneously, a series of modular test fixtures that can be quickly disassembled and replaced are developed as dedicated execution terminals, each designed for a specific model of vehicle-mounted box. Through standardized mechanical, electrical, and signal interfaces between the two, the system can achieve efficient parallel testing by deploying multiple identical fixtures on a universal platform, and can also achieve flexible line-change testing of multiple product types by quickly replacing different fixtures. It can be understood that this architecture fundamentally solves the contradiction between efficiency and flexibility in traditional testing, and ensures the consistency and reliability of results through a fully automated testing process.

[0025] Based on the above core ideas, the technical solution will be specifically described below through two aspects: the composition and connection relationship of the equipment (first embodiment) and the working process and testing method of the equipment (second embodiment).

[0026] First embodiment: like Figure 1-6 As shown, a stepped vehicle-mounted BOX functional testing device is provided in the first embodiment of the present invention. The functional testing device includes a stepped test cabinet 100 and four test fixtures 200.

[0027] like Figure 1 As shown, the main frame of the test cabinet 100 is made of sheet metal and has two mounting platforms 101. The two mounting platforms 101 form a step in height and are staggered in the front-to-back direction, ensuring that the vertical projections of the two mounting platforms do not overlap. This design ensures that the operating space of the workstations behind the lower mounting platform 101 is not obstructed by the upper mounting platform 101, allowing operators to simultaneously and without interference monitor and operate four workstations (such as loading, unloading, and visual inspection). In this embodiment, each mounting platform is equipped with two test workstations 102 (refer to...). Figure 3 As shown in the figure, there are a total of four workstations, thus realizing the parallel testing capability of "one to four".

[0028] like Figure 2As shown, the test cabinet 100 integrates the core system for equipment operation, including a central control unit 110, multiple functional test modules 120, and standardized electrical interfaces 130 independently configured for each test station. Specifically, the central control unit 110 (including an industrial computer and PLC) serves as the control core, responsible for scheduling, resource allocation, and data management of the entire testing process. The functional test modules 120 are centrally located in module boxes inside the cabinet, such as... Figure 2A As shown, the functional test module 120 includes a CAN box 121 for simulating a vehicle CAN bus and an Ethernet box 122 for high-speed network testing. The functional test module 120, as a shared resource, can be dynamically allocated to any test station by the central control unit 110 via a switch matrix within the cabinet or software configuration. Furthermore, each test station 102 corresponds to a set of standardized electrical interfaces 130. The definitions of these standardized electrical interfaces 130 (such as power pins, signal pins, network ports, and air connectors) are identical across all stations, ensuring complete interchangeability of the fixtures.

[0029] Preferably, such as Figure 3 As shown, each mounting platform 101 is also equipped with a quick-release structure. This quick-release structure includes a positioning pin 103 and multiple locking pins 104. The positioning pin 103 is disposed on the surface of the mounting platform 101 for coarse positioning of the test fixture 200. The multiple locking pins 104 are distributed around the mounting platform 101 to lock the position of the test fixture 200. Specifically, when the test fixture 200 needs to be loaded, it is first placed on the surface of the mounting platform 101, and initially positioned using the positioning pin 103. Then, the locking pins 104 are stretched and pressed against the perimeter of the test fixture to restrict its position. After testing, the test fixture 200 is removed, and the multiple locking pins 104 return to their original position under no-force conditions, ready for the next locking operation.

[0030] In this embodiment, the quick-release structure enables the rapid replacement of the test fixture 200, thereby, in conjunction with a universal test platform, adapting to the testing needs of various models of vehicle-mounted BOXes and improving the adaptability of the equipment.

[0031] Preferably, such as Figure 2 As shown, the test cabinet also integrates an original vehicle signal simulation component 140, including a real vehicle camera, vehicle display screen, and vehicle antenna. Each test station 102 in the test cabinet has an independent original vehicle accessory interface (not shown in the figure). This interface connects to the original vehicle signal simulation component 140 via internal wiring harnesses, enabling realistic human-machine interaction with the vehicle BOX during testing, thus achieving simulated testing in a real environment.

[0032] In addition, such as Figure 2 As shown, preferably, in this embodiment, the functional testing equipment further includes a barcode scanning and identification device 150 and a function start / stop button group 160. Specifically, the barcode scanning and identification device 150 is disposed at each test station 102 for scanning and identifying the vehicle-mounted BOX. The function start / stop button group 160 is disposed on one side of each test station 102 for use by the operator to start the test process in manual test mode.

[0033] like Figure 4 As shown, in this embodiment, the test fixture 200 is a dedicated functional module designed for a specific model of vehicle-mounted BOX300. Specifically, the test fixture 200 includes at least a test adapter backplate 201, a product positioning detection component 202, and a plug-in / plug-out test component 203. The test adapter backplate 201 is mounted on the back of the fixture frame. When the test fixture 200 is installed at the test station via a quick-release structure, the connector on the test adapter backplate 201 precisely mates with the standardized electrical interface 130 and the original vehicle accessory interface 150 of the test station, thereby completing the connection of all power, signal, air circuit, and original vehicle signals in one go.

[0034] like Figure 3 and Figure 5 As shown, the product positioning detection component 202 performs initial positioning of the vehicle-mounted BOX300 under test through the positioning block 202c, and uses the in-situ sensor 202a (such as a photoelectric sensor) and the level sensor 202b (such as a tilt sensor or a micro switch) to determine whether the product is placed in place and has a flat posture. This signal is a prerequisite for triggering the subsequent automatic testing process.

[0035] like Figure 3 and Figure 6 As shown, the insertion / removal test assembly 203 is driven by a cylinder 203a, which pushes multiple contoured test heads 203b forward and backward. In this embodiment, each contoured test head 203b is connected to the side push plate through a two-stage floating structure to ensure undamaged and highly reliable mating between the contoured test head 203b and the high-density, high-precision connector on the vehicle-mounted BOX300. Specifically, the two-stage floating structure includes a first floating unit (e.g., using a cross roller guide or flexible hinge) that allows the test head to make minute movements in a plane perpendicular to the insertion / removal direction (XY direction) to compensate for the positional tolerances of the product connector; and a second floating unit (e.g., a built-in spring) that allows the test head to have elastic stroke in the insertion / removal direction (Z direction) to absorb mating impacts and provide stable contact pressure.

[0036] In addition, such as Figure 4As shown, preferably, the test fixture 200 is also provided with a pressure claw cylinder assembly 204, which presses the vehicle BOX 300 before the contour test head 203b is inserted into the vehicle BOX 300, thereby firmly fixing the vehicle BOX 300 on the fixture and preventing it from tilting or shifting during insertion.

[0037] Second embodiment: Based on the first embodiment described above, the second embodiment of the present invention provides a testing method using the above-mentioned stepped vehicle-mounted BOX functional testing equipment. This method is used to perform automated functional testing on the vehicle-mounted BOX. Its workflow supports both manual and automatic modes, with the core steps being the same. The main difference lies in the loading and unloading process.

[0038] The following example uses the automatic testing mode, combined with the attached... Figure 7 The workflow is explained in detail: S1: Automatic feeding and positioning detection.

[0039] A robotic arm (not shown in the figure) picks up the vehicle-mounted BOX300 to be tested from the material line and places it in the preset carrier area of ​​the pre-installed test fixture 200. Multiple sensors of the product positioning detection component 202 operate in real time to detect whether the vehicle-mounted BOX300 is "in place" and "laid flat". When both conditions are met, the sensor signals are fed back to the central control unit 110.

[0040] S2: Product binding and process initiation.

[0041] The barcode scanning device 150, fixed next to the test station, scans the barcode of the vehicle-mounted BOX300 and binds the product serial number to the current station information. After receiving both "location successful" and "scanning successful" signals simultaneously, the central control unit 110 automatically triggers and starts the test program for that station.

[0042] S3: Automatic interpolation and signal path establishment.

[0043] First, the pressure claw cylinder assembly 204 on the control test fixture 200 is activated to press and fix the vehicle-mounted BOX300 from above, preventing it from shifting due to subsequent actions.

[0044] Then, the cylinder 203a of the insertion / removal test assembly 203 is activated, pushing multiple contour test heads 203b forward along the guide rail. This allows each contour test head 203b to adaptively align with the corresponding electrical connector port on the vehicle-mounted BOX300 via a two-stage floating structure, achieving precise and smooth docking and establishing a complete electrical test path. At this point, test signals from the functional test module 120 and real signals from the original vehicle signal simulation assembly 140 can interact with the vehicle-mounted BOX300 through this path.

[0045] S4: Parallel functional testing and data interaction.

[0046] The central control unit 110 invokes the shared function test module 120 (such as CAN box 121 or Ethernet box 122) configured for this workstation to simulate the vehicle network environment and send a series of test commands, diagnostic requests, and simulated signals (such as simulated vehicle bus messages, network data packets, etc.) to the on-board BOX300. Simultaneously, the original vehicle signal simulation component 140 engages in realistic human-machine interaction or signal input / output with the on-board BOX300. The central control unit 110 collects and analyzes the response data of the on-board BOX300 in real time, such as communication status, signal output, and functional logic, to complete various preset functional test items.

[0047] S5: Test complete, all mechanisms reset.

[0048] After all tests are completed, the test results (including pass / fail status and detailed data logs) are automatically uploaded to the Manufacturing Execution System (MES) or data center. Subsequently, the central control unit 110 controls each actuator to reset in sequence: first, the cylinder of the insertion / removal test assembly 203 retracts, causing the contour test head to safely separate from the product port; then, the gripper cylinder assembly 204 lifts, releasing the product from its fixation.

[0049] S6: Automatic feeding.

[0050] The robotic arm removes the tested vehicle-mounted BOX300 and places it in the qualified or unqualified product area according to its classification. Test station 102 then enters an idle-ready state, awaiting the next test cycle. Throughout the process, other stations can independently and asynchronously execute their respective test procedures, all centrally scheduled and managed by the central control unit 110.

[0051] Understandably, the core processes (S3 to S5) of the manual testing mode are completely the same as those of the automatic testing mode. The difference is that the loading steps in S1 and unloading steps in S6 are completed manually by the operator. In the process start step in S2, after confirming that the product is placed in place, the operator manually presses the function start / stop button group 160 corresponding to the test station 102 to trigger the subsequent test process.

[0052] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0053] 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 at least one of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A stepped vehicle-mounted BOX functional testing device, characterized in that, include: The stepped test cabinet has multiple installation platforms arranged in a stepped manner and staggered in the height direction, and each installation platform is provided with multiple test stations; wherein, the stepped test cabinet integrates a central control unit, at least one functional test module that can be shared and called by multiple test stations, and a standardized electrical interface configured independently for each test station. At least one test fixture is detachably mounted on any of the test stations via a quick-release structure; the test fixture includes: a test adapter backplate for connecting to a standardized electrical interface on the test station; a product positioning detection component for detecting the in-situ status and placement posture of the vehicle-mounted BOX; and a plug-in test component for physically docking with the port of the vehicle-mounted BOX to establish a test signal path. At least one of the functional test modules is electrically connected to the test fixture through the stepped test cabinet and is signal-connected to the plug-in test component for data interaction with the vehicle-mounted BOX during testing. The multiple installation platforms are arranged in a stepped and staggered manner to optimize the operating space of multiple test stations and realize the visual management of parallel operations; the quick-release structure cooperates with the standardized electrical interface to quickly replace the test fixture, thereby adapting to different models of vehicle-mounted BOX testing.

2. The functional testing equipment as described in claim 1, characterized in that, The quick-release structure includes: A positioning pin is provided on the surface of the mounting platform for coarse positioning of the test fixture; Multiple locking pins are distributed around the installation platform and switch between working and idle states; In the working state, the multiple locking pins are elastically stretched and abut against the perimeter of the test fixture to restrict the position of the test fixture; in the idle state, the multiple locking pins return to their original state.

3. The functional testing equipment as described in claim 1, characterized in that, The functional testing module includes at least one of the following: a vehicle bus simulation module, an audio / video signal generation module, and a network communication testing module. The functional testing module establishes a test connection with any of the test stations through the configuration of the central control unit.

4. The functional testing equipment as described in claim 1, characterized in that, Also includes: A barcode scanning and identification device is installed at each of the test stations for scanning and identifying the vehicle-mounted BOX. A set of start / stop buttons is provided on one side of each of the test stations to allow operators to start the test process in manual test mode.

5. The functional testing equipment as described in claim 1, characterized in that, The test cabinet also integrates at least one set of original vehicle signal simulation components, which include at least one of an in-vehicle camera, an in-vehicle display screen, and an in-vehicle antenna. The test cabinet is equipped with an independent original vehicle part interface for each test station, and the test adapter backplate of the test fixture is equipped with a corresponding original vehicle signal adapter port. When the test fixture is installed on the test station through the quick-release structure, the original vehicle signal adapter port establishes an electrical connection with the original vehicle accessory interface, so that the original vehicle signal simulation component forms a closed-loop test circuit with the corresponding port of the vehicle BOX under test through the plug-in test component.

6. The functional testing equipment as described in claim 1, characterized in that, The insertion and removal test assembly includes a contour test head driven by a cylinder and having a floating structure, used to automatically insert and disconnect with the electrical connector of the vehicle-mounted BOX.

7. The functional testing equipment as described in claim 6, characterized in that, The floating structure of the contour test head is a two-stage floating structure, including a first floating unit for compensating for radial deviation and a second floating unit for compensating for axial deviation.

8. The functional testing equipment as described in claim 1, characterized in that, The test fixture also includes a pressure claw cylinder assembly for pressing the vehicle-mounted BOX during testing.

9. A method for testing the functionality of an on-board box using the testing equipment described in any one of claims 1 to 8, characterized in that, Includes the following steps: According to the model of the vehicle-mounted BOX to be tested, the corresponding test fixture is installed into any available test station of the stepped test cabinet through a quick-release structure. The product positioning detection component of the test fixture confirms that the vehicle-mounted BOX under test is placed in place. Control the movement of the plug-in / plug-out test component to establish a physical connection with the interface of the vehicle-mounted BOX; Through the established physical connection, at least one functional test module is controlled to interact with the vehicle-mounted BOX to perform functional tests on the vehicle-mounted BOX. After the test, control all components to reset and remove the vehicle-mounted BOX.

10. The test method as described in claim 9, characterized in that, The testing method supports both manual and automatic testing modes. In the manual testing mode, the tester performs the steps of loading and unloading the vehicle-mounted BOX, and the test process is automatically triggered after it is placed in place. In the automatic testing mode, the robotic arm performs the steps of loading and unloading the vehicle-mounted BOX, and automatically triggers the testing process after it is placed in place.

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