Automobile back row seat endurance test system and test method

Abstract

The invention discloses an automobile back row seat endurance test system and test method, and belongs to the technical field of automobile back row seat endurance tests. The test system comprises a sensing layer, an execution layer, a control center and a man-machine interaction layer, and data and information are transmitted among the sensing layer, the execution layer, the control center and the man-machine interaction layer. According to the method, the test system is used for carrying out an endurance test on the test seat, and the method comprises a first-stage locking test and a second-stage locking test. According to the invention, power control limitation of a traditional test is broken through, precise regulation and control and whole-course quantitative monitoring of the seat overturning speed are realized, and the technical blank of controllability and traceability of speed parameters in a rear row seat endurance test in the industry is filled; the industrial pain points that transient faults are difficult to capture and fault scenes cannot be restored in traditional manual detection are solved, the manual intervention link in the test process is greatly compressed, and test interruption or rework caused by manual operation errors is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of automobile seat testing, and more particularly to an automobile rear seat durability testing system and testing method. Background Technology

[0002] Currently, in the field of automotive testing technology, rear seat durability testing is a core step in verifying the reliability of the seat structure, the stability of the locking mechanism, and long-term safety, directly affecting the driving experience and safety performance of the vehicle after it leaves the factory. However, existing testing technologies have many pain points that urgently need to be addressed, seriously affecting the accuracy, efficiency, and reliability of the tests.

[0003] In terms of power drive, existing solutions rely solely on a single cylinder as the actuator for seat folding. The cylinder's thrust output characteristics mean its speed is easily affected by factors such as air pressure fluctuations and load changes, making it impossible to precisely control according to the pre-set requirements of uniform speed and segmented speed changes in the test standards. In actual tests, the seat folding speed often deviates from being too fast or too slow, causing the test conditions to be out of sync with real-world usage scenarios. This makes it difficult to simulate the smooth force exertion of drivers and passengers during operation, resulting in test data that cannot accurately reflect the seat's durability performance in actual use.

[0004] In the anomaly detection phase, the current model relies entirely on manual visual monitoring and judgment throughout the entire process. During testing, the seats need to undergo thousands or even tens of thousands of repeated opening, locking, and folding cycles, with test cycles often lasting for hours or even days. Operators must continuously monitor key components such as seat hinges and locking mechanisms to check for abnormalities such as deformation, cracks, and loosening. This prolonged high-intensity focus not only easily leads to personnel fatigue, causing problems such as missed anomalies and misjudgments, but also makes it impossible to accurately capture and record the instantaneous operating conditions when anomalies occur, greatly hindering subsequent fault analysis and product optimization. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a vehicle rear seat durability testing system and testing method, which breaks through the limitations of power control in traditional testing, realizes precise control and full-process quantitative monitoring of seat flipping speed, fills the technical gap in the industry of controllability and traceability of speed parameters in rear seat durability testing, solves the industry pain point that traditional manual testing is difficult to capture instantaneous faults and cannot recreate fault scenarios, significantly reduces the manual intervention links in the testing process, and avoids test interruption or rework due to human operation errors.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A vehicle rear seat durability testing system includes: The perception layer includes a locking verification module, a speed monitoring module, and a vision monitoring module. The locking verification module sends a signal to the control cabinet after detecting the test seat in position. The speed monitoring module collects speed data during the single opening and closing process of the test seat and transmits this data directly to the radar testing system. It can also feed the speed data back to the control cabinet for process monitoring or condition judgment. The vision monitoring module monitors the seat hinges in real time at a set frequency and transmits the collected images to the vision analysis system for processing and comparison. When an anomaly is detected, the vision analysis system sends an alarm signal to the control cabinet. The execution layer includes an action execution module that receives instructions from the control cabinet and performs unlocking, unfolding and locking, or folding and stowing actions on the test seat. The control center includes a control cabinet, which sends instructions to the action execution module according to a preset program; The human-machine interface layer includes the display section of the speed monitoring module and the display section of the vision monitoring module. The control cabinet displays the speed data on the display section of the speed monitoring module, and the results and alarms analyzed by the vision analysis unit are displayed on the display section of the vision monitoring module.

[0007] A further technical solution is that the test seat is assembled on the test platform base, a support and fixing module is installed on the test platform base, the locking verification module is assembled between the test platform base, the support and fixing module and the test seat, and the speed monitoring module and the vision monitoring module are both installed on the test platform base.

[0008] A further technical solution is that the support and fixing module includes a cylinder fixing fixture, and the action execution module is installed on the cylinder fixing fixture. The action execution module includes a latch unlocking cylinder, a seat folding cylinder, a seat flipping electric cylinder, and a fixed pulley. The cylinder rod of the latch unlocking cylinder is connected to the backrest handle. The seat flipping electric cylinder is located under the test seat. The cylinder rod of the seat flipping electric cylinder is connected to the test seat through a transmission rope via the fixed pulley, and is used to pull the test seat to flip backward. The cylinder rod of the seat folding cylinder is connected to the seat back.

[0009] A further technical solution is that the test seat includes a seat hinge, a seat sample and accessories, the monitoring unit of the speed monitoring module monitors the seat hinge, and the locking verification module acts on the seat sample and accessories.

[0010] A further technical solution is that the locking verification module includes a first-stage locking verification cylinder, a second-stage locking verification cylinder, a first proximity switch, and a second proximity switch, all mounted on the test base and located behind the test seat.

[0011] A further technical solution is that the speed monitoring module includes a radar speed camera, a radar testing system, and an LED display screen. The radar speed camera forms the monitoring part of the speed monitoring module, and the LED display screen forms the display part of the speed monitoring module. The radar speed camera monitors the speed of the test seat and transmits it to the radar testing system and the LED display screen.

[0012] A further technical solution is that the visual monitoring module includes an industrial light source, a visual camera, and a visual system display screen. The visual camera forms the monitoring part of the visual monitoring module, the visual system display screen forms the display part of the visual monitoring module, the industrial light source supplies light to the visual camera, and the visual camera acquires images of the test seat and transmits them to the visual system display screen.

[0013] This invention also discloses a method for testing the durability of a car rear seat, using the aforementioned car rear seat durability testing system, comprising the following steps: Step 1. Experiment preparation; Step 2. In the initial stage, the test seat is in a folded state; Step 3. Control the action execution module to keep the backrest handle in the unlocked state, then flip the test seat to the first-level locking position, and then control the backrest handle to return to the locked state; Step 4. Control the locking verification module to perform a first-level locking test on the test seat; Step 5. After the first-level locking test is completed, the control action execution module will act again to keep the backrest handle in the unlocked state; Step 6. Then, the motion execution module flips the test seat to the secondary locking position, and controls the backrest handle to return to the locked state; Step 7. Control the locking verification module to perform a secondary locking test on the test seat; Step 8. After the secondary locking test is completed, the motion execution module pushes the seat back to fold and completes one cycle.

[0014] A further technical solution is to input the shape and contour data of the seat hinge into the vision testing system before the test. During the entire test, the vision monitoring module monitors and compares the seat hinge in real time at a set frequency, and feeds the results back to the display of the vision monitoring module. It also outputs an alarm based on any abnormality in the seat hinge.

[0015] A further technical solution is that, throughout the entire unfolding process of the test seat, the monitoring unit of the speed monitoring module measures the speed of the test seat during each unfolding and closing process; the unfolding process of the test seat is monitored in real time, and the speed of unfolding and folding of the seat back is displayed on the display unit of the speed monitoring module in real time.

[0016] The beneficial effects of adopting the above technical solution are as follows: The system of this invention adopts a four-layer architecture: perception layer, control center, execution layer, and human-machine interaction layer. It achieves closed-loop management of the entire process, from data acquisition and command issuance to action execution and result feedback. This breaks through the limitations of traditional testing equipment, which suffers from fragmented functions and poor coordination, significantly improving the overall stability and reliability of the system. The perception layer features a multi-module collaborative design, with locking verification, speed monitoring, and visual monitoring each performing their respective functions while sharing data. This ensures comprehensive coverage of key test parameters and improves the accuracy of test results through cross-validation, avoiding the limitations of a single monitoring dimension. The human-machine interaction layer precisely corresponds to the perception layer, with speed data and visual analysis results presented in a partitioned and visualized manner. This allows operators to intuitively grasp the test dynamics, while targeted feedback of abnormal alarm signals reduces information filtering costs and enhances the controllability of the testing process.

[0017] The method of this invention employs a cyclical process centered on a first-level locking test, a second-level locking test, and a folding reset. This process fully replicates the key operating conditions of the test seat in actual use, ensuring that the durability of core components such as the locking mechanism and hinges is fully verified under different locking states. The test scenarios closely match actual usage needs. The standardized steps of unlocking, unfolding, locking, and verification avoid process deviations caused by manual operation, ensuring consistency of test conditions in each cycle. This makes the test data comparable and traceable, providing reliable data support for product optimization. The step-by-step execution of the two-level locking test can specifically capture potential problems at different locking positions, avoiding the omission of faults due to a single test. It also provides the possibility for performance differentiation analysis of different locking mechanisms, helping to accurately locate product weaknesses.

[0018] The system's automated operation, combined with standardized testing methods, significantly reduces manual intervention, lowering labor costs associated with intensive manual monitoring and preventing test interruptions or rework due to human error, thus improving overall testing efficiency. Real-time feedback of abnormal signals and closed-loop system control enable rapid response to faults, preventing escalation and wasting testing resources, while also shortening troubleshooting and problem localization time, indirectly reducing testing cycle costs. The system architecture boasts excellent adaptability; testing methods can be programmed to meet the testing requirements of different rear seat models without frequent equipment modifications, increasing equipment reuse and amortizing fixed investment costs.

[0019] In summary, this invention breaks through the limitations of power control in traditional testing, achieving precise control and full-process quantitative monitoring of seat flipping speed. It fills the technical gap in the controllability and traceability of speed parameters in the durability testing of rear seats in the industry, solves the industry pain points of traditional manual testing being unable to capture instantaneous faults and unable to recreate fault scenarios, significantly reduces the manual intervention links in the testing process, and avoids test interruptions or rework caused by human operation errors. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is a schematic diagram of the experimental system of the present invention; Figure 2 This is a structural block diagram of the test system of the present invention; Figure 3 This is a block diagram showing the composition of each module of the experimental system of the present invention and the structure of data transmission between them; Figure 4 This is a flowchart illustrating the workflow of the experimental method of the present invention. Figure 5 This is a flowchart illustrating the workflow of the visual monitoring module in the experimental method of this invention. Figure 6 This is a flowchart illustrating the workflow of the first-stage locking test in the test method of this invention. Figure 7 This is a flowchart illustrating the workflow of the secondary locking test in the test method of this invention; Figure 8 This is a flowchart illustrating the workflow of the speed monitoring module in the experimental method of this invention. Figure 9 This is a flowchart illustrating the workflow for test preparation in the test method of the present invention.

[0022] In the attached diagram: 1-Test base frame, 2-Seat flip-up electric cylinder, 3-Test seat, 4-Cylinder fixing fixture, 5-Lock unlocking cylinder, 6-First-stage locking verification cylinder, 7-Seat folding cylinder, 8-Radar speed measuring camera, 9-Second-stage locking verification cylinder, 10-First proximity switch, 11-Fixed pulley, 12-Second proximity switch, 13-LED display screen, 14-Vision system display screen, 15-Seat hinge, 16-Vision camera, 17-Industrial light source. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of this invention, unless otherwise stated, the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0025] Example 1 A vehicle rear seat durability testing system, such as Figures 1-3 As shown, it includes a perception layer, an execution layer, a control center, and a human-computer interaction layer.

[0026] The perception layer includes a locking verification module, a speed monitoring module, and a vision monitoring module. The locking verification module sends a signal to the control cabinet after detecting that the test seat 3 is in position. The speed monitoring module collects speed data from the single opening and closing process of the test seat 3 and transmits this speed data directly to the radar testing system. It can also feed the speed data back to the control cabinet for process monitoring or condition judgment. The vision monitoring module monitors the seat hinge 15 in real time at a set frequency and transmits the collected images to the vision analysis system for processing and comparison. When an anomaly is detected, the vision analysis system sends an alarm signal to the control cabinet. The execution layer includes an action execution module that receives instructions from the control cabinet and performs unlocking, flipping and locking, or folding and stowing actions on the test seat 3. The control center includes a control cabinet, which sends instructions to the action execution module according to a preset program; The human-machine interface layer includes the display section of the speed monitoring module and the display section of the vision monitoring module. The control cabinet displays the speed data on the display section of the speed monitoring module, and the results and alarms analyzed by the vision analysis unit are displayed on the display section of the vision monitoring module.

[0027] This embodiment takes the control center (control cabinet) as the core hub, connecting the perception layer, execution layer and human-machine interaction layer to form a fully automated operation logic of data acquisition, command issuance, action execution and result feedback.

[0028] This embodiment demonstrates the complete workflow in a test scenario (taking a single cycle as an example). 1. Initial state: Test seat 3 is in the folded position, the control cabinet starts the preset program and issues an unlock command to the execution layer; 2. Perception layer ready: The visual monitoring module activates the industrial light source 17 and begins capturing hinge images at a specific frequency; the speed monitoring module enters the speed measurement standby state. 3. Execution layer actions (unlocking, opening): Unlock the backrest handle; pull the test seat 3 to open it; the speed monitoring module collects speed data in real time and transmits it to the LED display screen 13 and the control cabinet; 4. Position determination and action switching: When the first proximity switch 10 of the locking verification module detects that the test seat 3 is in place, it sends a first-level locking signal to the control cabinet; the control cabinet issues a simulated overload, and then performs a first-level locking test to verify the effectiveness of the locking. 5. Abnormal monitoring: If the vision monitoring module detects deformation of the seat hinge 15, it immediately sends an alarm signal to the control cabinet. The control cabinet instructs the execution layer to stop the action, and at the same time, an alarm pops up on the vision system display screen 14. If the speed exceeds the standard, the speed monitoring module sends a feedback signal, which also triggers a stop test and an alarm. 6. Subsequent process: After the first-level verification is completed, repeat the unlock, unfold, second-level verification, and fold actions until the end of a single cycle. The system will then automatically enter the next cycle or stop after a preset number of cycles.

[0029] This embodiment breaks through the limitations of traditional testing, improving the accuracy and intelligence of the test. It can precisely control the opening speed according to the test standards and quantitatively monitor the speed data throughout the process, filling the gap in the industry regarding the traceability of speed parameters in rear seat durability testing, ensuring a high degree of consistency between the test conditions and real-world usage scenarios. The visual monitoring module replaces traditional manual visual inspection, capturing millimeter-level deformation and cracking of seat hinges through image comparison technology, and continuously monitoring at a certain frequency to avoid missed detections and misjudgments caused by human fatigue. At the same time, abnormal signals directly trigger the system to stop the test, solving the pain point of traditional manual methods being unable to instantly capture fault conditions, and leaving complete scenario data for subsequent fault analysis. Commands are uniformly issued by the control cabinet, and the execution layer completes the actions according to the preset program, avoiding process deviations caused by manual operation, ensuring consistent test conditions for each cycle, and making the test data comparable and scientific.

[0030] The testing system automates the entire process of unlocking, unfolding, verifying, and folding, eliminating the need for constant human supervision. Intervention is only required when an alarm is triggered, significantly reducing manual labor intensity and preventing test interruptions due to human error. Real-time data transmission between the sensing layer and the control center enables rapid triggering of test stoppage and alarms upon the occurrence of anomalies, preventing escalation of faults, reducing fault handling time, and indirectly shortening the test cycle.

[0031] Example 2 like Figure 1 and Figure 3 As shown, the test seat 3 is mounted on the test platform base, which includes the test frame 1. A support and fixing module is installed on the test frame 1. A locking verification module is mounted between the test frame 1, the support and fixing module, and the test seat 3. The speed monitoring module and the vision monitoring module are both mounted on the test frame 1.

[0032] In this embodiment, the test frame 1 serves as the core load-bearing structure, integrating the test seat 3, support and fixing module, locking verification module, speed monitoring module, and visual monitoring module. This avoids the uneven stress distribution problem caused by traditional distributed installations. The rigid structure of the test frame 1 effectively counteracts the vibration and impact forces generated by the electric cylinder pulling and the pneumatic cylinder extending and retracting during the test, reducing monitoring deviations caused by component loosening or displacement, and ensuring the stability and accuracy of test data. The support and fixing module, installed on the test frame 1, can precisely position and rigidly fix the actuators such as the locking unlocking cylinder 5 and the seat folding cylinder 7, clearly defining the movement trajectory of each component. This design avoids displacement and collision of actuators due to lack of fixed constraints during the test, reducing the risk of mechanical failure and ensuring the continuous and smooth operation of the test process.

[0033] Example 3 like Figure 1 and Figure 3 As shown, the support and fixing module includes a cylinder fixing fixture 4, and the action execution module is mounted on the cylinder fixing fixture 4. The action execution module includes a latch unlocking cylinder 5, a seat folding cylinder 7, a seat flipping electric cylinder 2, and a fixed pulley 11. The cylinder rod of the latch unlocking cylinder 5 is connected to the backrest handle; the seat flipping electric cylinder 2 is located below the test seat 3, and its cylinder rod is connected to the test seat 3 via a transmission rope through the fixed pulley 11, used to pull the test seat 3 to flip backward; the cylinder rod of the seat folding cylinder 7 is connected to the seat back. The test seat 3 includes a seat hinge 15, a seat sample, and accessories. The monitoring unit of the speed monitoring module monitors the seat hinge 15, and the locking verification module acts on the seat sample and accessories.

[0034] In this embodiment, the seat-flipping electric cylinder 2 is located below the test seat 3. The direction of the transmission rope is changed via a fixed pulley 11, achieving force transmission for both downward drive and upward folding. Compared to traditional single-cylinder drive, the seat-flipping electric cylinder 2 can precisely control the extension and retraction speed through a preset program in the control cabinet, and the output force is stable, avoiding the problem of sudden speed increases and decreases caused by air pressure fluctuations in traditional cylinders. This design can simulate the smooth force exertion state when a driver or passenger operates the seat, ensuring a high degree of consistency between the test conditions and real-world usage scenarios. This makes the speed and force data during the seat-flipping process more valuable for reference, providing a precise basis for subsequent optimization of the seat's transmission structure.

[0035] In this embodiment, the cylinder rod of the locking unlocking cylinder 5 is directly connected to the backrest handle. Only the extension and retraction of the cylinder need to be controlled to accurately achieve unlocking and locking, with a fixed action path, avoiding force deviations when manually operating the handle and ensuring consistency in each unlocking / locking action. The cylinder rod of the seat folding cylinder 7 is connected to the seat back. A preset thrust can be used to push the backrest folding, while the backrest's own weight assists in resetting. This reduces the load on the seat folding cylinder 7 and ensures a smooth, uninterrupted folding action, preventing seat frame deformation due to uneven folding force and ensuring the integrity of the test sample. The core of the support and fixing module is the cylinder fixing fixture 4, which centrally fixes the locking cylinder 5 and the seat folding cylinder 7. On the one hand, the rigid structure of the cylinder fixing fixture 4 offsets the reaction force generated when the cylinder extends or retracts, preventing the cylinder from becoming loose due to force displacement. On the other hand, the cylinder fixing fixture 4 can ensure that the extension and retraction direction of each cylinder is aligned with the target action point of the test seat 3 through precise drilling and positioning, avoiding misalignment and collision when the cylinder moves (such as the cylinder rod offset scraping the seat surface), reducing the risk of mechanical failure, and ensuring the continuous and smooth test process.

[0036] The connection between each actuator and the test seat 3 adopts a direct-acting, directional transmission design without intermediate redundant structures. This minimizes force transmission loss and ensures that the action commands of the actuators are accurately transmitted to the test seat 3. This makes the unlocking, flipping, and folding actions of the test seat 3 completely synchronized with the preset program of the control cabinet, avoiding test data deviations caused by action lag.

[0037] Example 4 like Figure 1 and Figure 3 As shown, the locking verification module includes a first-stage locking verification cylinder 6, a second-stage locking verification cylinder 9, a first proximity switch 10, and a second proximity switch 12, all mounted on the test base and located behind the test seat 3.

[0038] In this embodiment, the primary locking verification cylinder 6 and the secondary locking verification cylinder 9 correspond to the primary and secondary locking positions of the test seat 3, respectively, and are directly installed on the test base 1. They can apply directional pressure to the seat locking mechanism through a preset fixed force value. Compared with the traditional method of manually pushing and pulling to check the locking status, the cylinder loading force value is controllable, stable, and highly repeatable. It can accurately simulate the load that the seat may bear in actual use (such as passenger leaning, luggage compression). Whether the locking mechanism is effectively locked is judged by whether there is displacement after loading, avoiding misjudgment caused by uneven force during manual inspection.

[0039] The first proximity switch 10 and the second proximity switch 12 are precisely aligned with the primary and secondary locking positions, respectively. When the test seat 3 flips to the corresponding locking position, the first proximity switch 10 / second proximity switch 12 can trigger a position signal in real time and transmit it to the control center. This design solves the problem of lag in traditional manual observation and judgment, ensuring that the test seat 3 can accurately stop at the target locking position every time, providing a stable test benchmark for the subsequent loading of the primary locking verification cylinder 6 / secondary locking verification cylinder 9.

[0040] Example 5 like Figure 3 As shown, the speed monitoring module includes a radar speed camera 8, a radar testing system, and an LED display screen 13. The radar speed camera 8 forms the monitoring unit of the speed monitoring module, and the LED display screen 13 forms the display unit of the speed monitoring module. The radar speed camera 8 monitors the speed of the test seat 3 and transmits the data to the radar testing system and the LED display screen 13. The vision monitoring module includes an industrial light source 17, a vision camera 16, and a vision system display screen 14. The vision camera 16 forms the monitoring unit of the vision monitoring module, and the vision system display screen 14 forms the display unit of the vision monitoring module. The industrial light source 17 supplies light to the vision camera 16, and the vision camera 16 acquires images of the test seat 3 and transmits them to the vision system display screen 14.

[0041] Example 6 A method for testing the durability of a car rear seat, using the aforementioned car rear seat durability testing system, such as... Figures 4-9 As shown, it includes the following steps: Step 1. Experiment preparation; Step 2. Initial stage: Test seat 3 is in a folded state; Step 3. Control the action execution module to keep the backrest handle in the unlocked state, then flip the test seat 3 to the first-level locking position, and then control the backrest handle to return to the locked state; Step 4. Control the locking verification module to perform a first-level locking test on the test seat 3; Step 5. After the first-level locking test is completed, the control action execution module will act again to keep the backrest handle in the unlocked state; Step 6. Then, the motion execution module flips the test seat 3 to the secondary locking position, and controls the backrest handle to return to the locked state; Step 7. Control the locking verification module to perform a secondary locking test on the test seat 3; Step 8. After the secondary locking test is completed, the motion execution module pushes the seat back to fold and completes one cycle.

[0042] This embodiment clearly distinguishes between the primary and secondary locking test processes. Steps 3 and 4 first complete the unlocking, flipping, locking, and verification of the primary locking mechanism. Steps 5-7 then advance to the equivalent secondary locking test, fully replicating the hierarchical locking logic of a car's rear seat in actual use. Compared to traditional tests that only measure a single locking position or combine two levels of locking, this design avoids omissions in verifying secondary locking positions, ensuring that the test covers all core usage scenarios of the seat. This allows the test results to directly support the reliability assessment of the entire seat locking system, providing more comprehensive protection for the safety performance of the end product.

[0043] The process strictly follows the actual operational sequence of drivers and passengers: unlocking, flipping, locking, and verification. In step 3, the backrest handle is unlocked first, then the seat is flipped open, and the backrest handle is returned to its original position to lock. In step 8, after the test is completed, the seat backrest is pushed back to its original folding position, perfectly matching the natural movement sequence of a user using the seat. This sequential restoration design avoids the disconnect between the test conditions and real-world scenarios caused by the chaotic sequence of traditional test actions, ensuring that the stress state and component wear patterns of the seat during the test are consistent with actual use. This allows the test data to accurately reflect the durability performance of the seat after long-term use, providing a practical basis for product optimization. The test data is comparable both horizontally (different seats) and vertically (multiple cycles of the same seat), providing a reliable foundation for data statistics and analysis. The first-level locking test and the second-level locking test are completed continuously within a single cycle, eliminating the need for two separate tests and reducing the time wasted on starting and stopping the test equipment and adjusting parameters.

[0044] Example 7 like Figure 5 As shown, the workflow of the visual monitoring module is as follows: 1. Lighting preparation: Industrial light source 17 is activated to provide stable and uniform lighting for the seat hinge 15 area, ensuring that the vision camera 16 can clearly capture hinge details.

[0045] 2. Image acquisition: The visual camera 16 captures images of the seat hinge 15 at a set frequency to obtain real-time images.

[0046] 3. Image comparison and analysis: The real-time images collected are compared and analyzed with the standard contour data of the seat hinge 15 recorded before the test to determine whether there are any abnormalities such as deformation or cracking.

[0047] 4. Results display: The comparison and analysis results are displayed in real time on the vision system display screen 14.

[0048] 5. Anomaly Detection: Determine if the seat hinge 15 is deformed or cracked. If not, return to the visual camera 16 to record the hinge steps and continuously monitor in a loop; if yes, output an alarm.

[0049] This embodiment achieves full automation from lighting and image acquisition to analysis and judgment, eliminating the need for manual intervention and significantly reducing labor intensity. It avoids fatigue and missed detection issues common in manual visual inspection. By comparing with preset standard contour data, it can accurately identify millimeter-level anomalies such as deformation and cracking, with detection accuracy far exceeding that of the human eye, ensuring timely detection of abnormalities. The analysis results are displayed on the screen in real time, allowing operators to intuitively understand the hinge status. Simultaneously, alarms are output when anomalies are detected, prompting immediate action to prevent escalation of the fault. Image data and analysis results from the entire monitoring process can be saved, providing detailed data support for subsequent fault analysis and product improvement, and contributing to continuous optimization of seat design and testing procedures.

[0050] Example 8 like Figure 6 As shown, the primary locking test workflow is as follows: 1. Seat flipped up: The seat flipping cylinder 2 retracts, pulling the test seat 3 to flip it backward until it reaches the first-level locking position.

[0051] 2. Position signal detection: The first proximity switch 10 detects the position signal of the test seat 3, confirming that the test seat 3 has been accurately stopped in the first-level locking position.

[0052] 3. Overload simulation: The seat flips up and the electric cylinder 2 remains in an overload state for 2 seconds to simulate the overload usage scenario when the driver and passengers lock the seat in the first-level locking position.

[0053] 4. Locking effectiveness verification: The first-level locking verification cylinder 6 extends and applies a set force value to the test seat 3 to verify whether the first-level locking mechanism can effectively lock.

[0054] 5. Cylinder reset: The first-stage locking verification cylinder 6 is retracted, completing the first-stage locking test process.

[0055] This embodiment uses an electric cylinder overload holding mechanism to accurately simulate the overload scenario of forceful locking during actual user use, making the test conditions more closely resemble real-world usage and ensuring that the test results effectively reflect the seat's primary locking reliability under extreme conditions. The signal detection of the first proximity switch 10 enables precise determination of the primary locking position of the test seat 3, avoiding errors caused by manual position judgment and providing a stable and consistent test benchmark for subsequent locking verification. From the test seat 3 opening to locking verification and cylinder reset, the entire process is clearly defined and highly automated, eliminating the variability of manual operation and ensuring consistent conditions for each primary locking test, resulting in repeatable and comparable test data.

[0056] Example 9 like Figure 7 As shown, the secondary locking test workflow is as follows: 1. Flip the seat to the second-level position: Continue to retract the seat flip cylinder 2, pull the test seat 3 from the first-level locking position to flip it backward until it reaches the second-level locking position.

[0057] 2. Position signal detection: The second proximity switch 12 detects the position signal of the test seat 3, confirming that the test seat 3 has been accurately stopped in the secondary locking position.

[0058] 3. Overload simulation: The seat flips up and the electric cylinder 2 remains in an overload state for 2 seconds to simulate the overload usage scenario when the driver and passengers lock the seat in the secondary locking position.

[0059] 4. Locking effectiveness verification: The secondary locking verification cylinder 9 extends and applies a set force value to the test seat 3 to verify whether the secondary locking mechanism can effectively lock.

[0060] 5. Cylinder reset: The secondary locking verification cylinder 9 is retracted, completing the secondary locking test process.

[0061] This embodiment features a separate test procedure designed for the secondary locking position, filling the gap in traditional tests that only focus on the primary locking. It fully replicates the full range of locking conditions encountered during actual use of the seat, ensuring the reliability of the secondary locking mechanism is fully verified. Through an overload holding mechanism with the electric cylinder, it accurately simulates the extreme scenario of a user forcefully locking the seat in the secondary locking position. This allows the test data to truly reflect the seat's durability under high-frequency, heavy-load use, providing a precise basis for product design optimization. The signal triggering mechanism of the second proximity switch 12 replaces manual visual judgment of the position, avoiding human error and ensuring that the starting position of each secondary locking test is completely consistent. The test conditions are highly standardized, and the data is highly comparable. The loading test of the secondary locking verification cylinder 9 can detect potential faults in the secondary locking mechanism in advance, preventing these faults from causing seat loosening, abnormal noises, or even safety risks during long-term use, significantly improving the product's safety redundancy.

[0062] Example 10 like Figure 8 As shown, the workflow of the speed monitoring module is as follows: 1. Speed ​​monitoring: The radar speed camera 8 monitors the opening, folding and other movements of the test seat 3 in real time and collects the speed data of the seat.

[0063] 2. Data display: The collected speed data is displayed on the LED display screen 13 in real time, which makes it easy for operators to intuitively view the dynamic changes in the movement speed of the test seat 3.

[0064] Throughout the entire unfolding process of the test seat 3, the monitoring unit of the speed monitoring module measures the speed of the test seat 3 during each unfolding and closing process; the real-time monitoring of the unfolding of the test seat 3 and the real-time display of the unfolding and folding speed of the seat back on the display unit of the speed monitoring module.

[0065] The radar speed camera 8 in this embodiment can capture the movement speed of the test seat 3 in real time, and transmit the data to the LED display screen 13 without delay. This ensures that operators can monitor the speed status of the test seat 3 at any time and promptly detect any speed anomalies. The speed data is displayed in real time on the LED display screen 13 in an intuitive form such as numbers or curves, making it easy for operators to quickly understand and analyze the changing patterns of the test seat 3's movement speed, providing a basis for monitoring and adjusting the test process. Compared to traditional manual estimation or non-professional speed measurement methods, the radar speed camera 8 has high speed measurement accuracy, accurately reflecting the speed of the test seat 3 at different stages of movement, ensuring the accuracy and reliability of the test data, and providing precise data support for the performance evaluation and optimization of the seat transmission system. The entire monitoring process is highly automated, eliminating the need for complex manual speed measurement operations, reducing the workload and intensity of operators, and improving the overall efficiency of the test.

[0066] Example 11 like Figure 9 As shown, the experimental preparation process is as follows: 1. System power-on initialization: Connect all equipment in the test system (including control cabinet, vision monitoring module, speed monitoring module, electric cylinders and pneumatic cylinders in the execution layer, etc.) to the power supply. The system will automatically complete hardware self-test, software loading and other initialization operations to ensure that each module is in a working state.

[0067] 2. Input hinge contour data into the visual monitoring module: Input the standard contour data (such as size, shape, texture and other feature information) of the hinge of the test seat 3 into the visual analysis system of the visual monitoring module as the benchmark data for subsequent image comparison.

[0068] This embodiment, through power-on initialization, can preemptively identify system hardware faults and software malfunctions, ensuring stable and continuous system operation after the test begins, and avoiding interruptions during the test due to insufficient equipment initialization. Inputting the standard contour data of the seat hinge 15 provides an accurate reference benchmark for image comparison and analysis by the visual monitoring module, ensuring high accuracy in subsequent identification of abnormalities such as deformation and cracking of the seat hinge 15, and avoiding misjudgments or omissions due to missing or incorrect benchmark data. The initialization and data entry process is simple and clear, and can be completed quickly, saving time for timely test commencement, while reducing additional debugging time caused by insufficient preparation, thus improving overall test efficiency.

[0069] Example 12 Before the test, the shape and contour data of the seat hinge 15 were entered into the vision testing system. During the entire test, the vision monitoring module monitored and compared the seat hinge 15 in real time at the set frequency, and fed the results back to the display of the vision monitoring module. It also output an alarm based on the abnormality of the seat hinge 15.

[0070] The above are merely preferred embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A durability testing system for automotive rear seats, characterized in that, include: The perception layer includes a locking verification module, a speed monitoring module, and a vision monitoring module. The locking verification module sends a signal to the control cabinet after detecting the test seat in position. The speed monitoring module collects speed data during the single opening and closing process of the test seat and transmits this data directly to the radar testing system. It can also feed the speed data back to the control cabinet for process monitoring or condition judgment. The vision monitoring module monitors the seat hinges in real time at a set frequency and transmits the collected images to the vision analysis system for processing and comparison. When an anomaly is detected, the vision analysis system sends an alarm signal to the control cabinet. The execution layer includes an action execution module that receives instructions from the control cabinet and performs unlocking, unfolding and locking, or folding and stowing actions on the test seat. The control center includes a control cabinet, which sends instructions to the action execution module according to a preset program; The human-machine interface layer includes the display section of the speed monitoring module and the display section of the vision monitoring module. The control cabinet displays the speed data on the display section of the speed monitoring module, and the results and alarms analyzed by the vision analysis unit are displayed on the display section of the vision monitoring module.

2. The automobile rear seat durability testing system according to claim 1, characterized in that, The test seat is mounted on the test platform base, and a support and fixing module is installed on the test platform base. The locking verification module is mounted between the test platform base, the support and fixing module and the test seat. The speed monitoring module and the vision monitoring module are both installed on the test platform base.

3. The automobile rear seat durability testing system according to claim 2, characterized in that, The support and fixing module includes a cylinder fixing fixture, and the action execution module is installed on the cylinder fixing fixture. The action execution module includes a latch unlocking cylinder, a seat folding cylinder, a seat flipping electric cylinder, and a fixed pulley. The cylinder rod of the latch unlocking cylinder is connected to the backrest handle. The seat flipping electric cylinder is located under the test seat. The cylinder rod of the seat flipping electric cylinder is connected to the test seat through a transmission rope via the fixed pulley, and is used to pull the test seat to flip backward. The cylinder rod of the seat folding cylinder is connected to the seat back.

4. The automobile rear seat durability testing system according to claim 2, characterized in that, The test seat includes a seat hinge, a seat sample and accessories. The speed monitoring module monitors the seat hinge, and the locking verification module acts on the seat sample and accessories.

5. The automobile rear seat durability testing system according to claim 4, characterized in that, The locking verification module includes a primary locking verification cylinder, a secondary locking verification cylinder, a first proximity switch, and a second proximity switch, all mounted on the test base and located behind the test seat.

6. The automobile rear seat durability testing system according to claim 1, characterized in that, The speed monitoring module includes a radar speed camera, a radar testing system, and an LED display screen. The radar speed camera forms the monitoring part of the speed monitoring module, and the LED display screen forms the display part of the speed monitoring module. The radar speed camera monitors the speed of the test seat and transmits it to the radar testing system and the LED display screen.

7. The automobile rear seat durability testing system according to claim 1, characterized in that, The visual monitoring module includes an industrial light source, a visual camera, and a visual system display screen. The visual camera forms the monitoring part of the visual monitoring module, and the visual system display screen forms the display part of the visual monitoring module. The industrial light source supplies light to the visual camera, and the visual camera acquires images of the test seat and transmits them to the visual system display screen.

8. A method for testing the durability of a car rear seat, characterized in that, The application of the automotive rear seat durability testing system as described in any one of claims 1-7 includes the following steps: Step 1. Experiment preparation; Step 2. In the initial stage, the test seat is in a folded state; Step 3. Control the action execution module to keep the backrest handle in the unlocked state, then flip the test seat to the first-level locking position, and then control the backrest handle to return to the locked state; Step 4. Control the locking verification module to perform a first-level locking test on the test seat; Step 5. After the first-level locking test is completed, the control action execution module will act again to keep the backrest handle in the unlocked state; Step 6. Then, the motion execution module flips the test seat to the secondary locking position, and controls the backrest handle to return to the locked state; Step 7. Control the locking verification module to perform a secondary locking test on the test seat; Step 8. After the secondary locking test is completed, the motion execution module pushes the seat back to fold and completes one cycle.

9. The method for durability testing of a car rear seat according to claim 8, characterized in that, Before the test, the shape and contour data of the seat hinge were entered into the vision testing system. During the entire test, the vision monitoring module monitored and compared the seat hinge in real time at a set frequency, and fed the results back to the display of the vision monitoring module. It also output an alarm based on the abnormality of the seat hinge.

10. The method for durability testing of a rear seat in an automobile according to claim 8, characterized in that, Throughout the entire unfolding process of the test seat, the monitoring unit of the speed monitoring module measures the speed of the test seat during each unfolding and closing process; the unfolding process of the test seat is monitored in real time, and the speed of unfolding and folding of the seat back is displayed on the display unit of the speed monitoring module in real time.

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