Vehicle door closing function detection method and system, readable storage medium

Abstract

This invention provides a method and system for detecting the closing function of a vehicle door, as well as a readable storage medium, relating to the field of vehicle door detection technology. The method includes the following steps: performing a door closing operation and detecting the opening and closing state of the door in real time; determining whether the door has been successfully closed based on the detected opening and closing state; if the door has been successfully closed, acquiring the speed data corresponding to the closed state; if the door has not been successfully closed, acquiring the speed data corresponding to the unclosed state; calling a preset model and outputting a judgment result based on the acquired speed data corresponding to the closed state and the speed data corresponding to the unclosed state; the entire single-pass detection process can be completed without manual intervention, significantly shortening the detection time for a single vehicle door, adapting to the rhythm of continuous batch quality inspection on the production line, avoiding errors in manual recording and inconsistent application of judgment standards, and ensuring the consistency and accuracy of all detection results.

Description

Technical Field

[0001] This invention relates to the field of vehicle door detection technology, specifically to a method and system for detecting the closing function of a vehicle door, and a readable storage medium. Background Technology

[0002] In the final assembly stage of automobile production, door closing performance is one of the core indicators of vehicle quality inspection before it leaves the factory, directly affecting the user experience and the overall NVH (noise, vibration, and harshness) performance of the vehicle. Currently, the industry generally adopts a manual inspection method, which involves manually operating the door to complete the closing action, collecting the closing speed data through an external speed measuring device, manually recording the data, and then comparing it with standards to determine its passability.

[0003] However, such testing requires manual judgment of whether the car door is completely closed, manual data recording and result determination. This not only results in low testing efficiency, but also makes it easy for manual operation to lead to data recording errors and inconsistent judgment standards, resulting in uncontrollable accuracy of test results.

[0004] Therefore, it is necessary to provide a method and system for detecting the door closing function, as well as a readable storage medium, to solve the above-mentioned technical problems. Summary of the Invention

[0005] The main objective of this invention is to provide a method and system for detecting the door closing function, as well as a readable storage medium, in order to solve the technical problems of low detection efficiency and uncontrollable accuracy of detection results in the prior art.

[0006] To achieve the above objectives, the present invention provides a method for detecting the door closing function, the method comprising the following steps: Perform door closing operations and monitor the door's opening and closing status in real time; The system determines whether the door has been successfully closed based on the detected opening and closing status. If the door is successfully closed, the system obtains the speed data corresponding to the closed door status; if the door is not successfully closed, the system obtains the speed data corresponding to the open door status. The system invokes a preset model and outputs a judgment result based on the speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door.

[0007] In one embodiment, the step of calling a preset model and outputting a judgment result based on the acquired speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door includes: Calculate the difference between the speed data corresponding to the closed door state and the speed data corresponding to the open door state; Determine whether the difference is less than 0.01. If the difference is less than 0.01, the determination result is considered qualified and marked as OK; if the difference is greater than or equal to 0.01, the determination result is considered unqualified and marked as NG.

[0008] In one embodiment, the door closing function detection method further includes the following steps: NG data that is deemed unqualified is stored separately in the database for verification, while OK data that is deemed qualified is automatically entered into the test report.

[0009] In one embodiment, the door closing function detection method further includes the following steps: After all doors have been inspected, a summary inspection report and a speed data trend chart are automatically generated based on the full inspection data.

[0010] In addition, to achieve the above objectives, the present invention also provides a readable storage medium storing a door closing function detection program, which, when executed by a processor, implements the steps of the door closing function detection method as described above.

[0011] Furthermore, to achieve the above objectives, the present invention also provides a door closing function detection system, which applies the door closing function detection method described above, and the door closing function detection system includes: A status detection component, comprising a photoelectric sensor and a speed sensor, wherein the photoelectric sensor is used to collect door opening and closing status signals in real time, and the speed sensor is used to collect speed data; A data transmission unit, which is signal-connected to the state detection component; The data processing unit is signal-connected to the data transmission unit. The data processing unit has a built-in preset model for receiving the door opening / closing status signal and the speed data and outputting the pass / fail judgment result. At the same time, it completes data storage, report generation and trend chart drawing.

[0012] In one embodiment, the state detection component further includes an I / O conversion module, wherein the signal output terminals of the photoelectric sensor and the speed sensor are both connected to the signal input terminal of the I / O conversion module, and the I / O conversion module is used to convert the analog signals collected by the photoelectric sensor and the speed sensor into standard digital signals for output.

[0013] In one embodiment, the state detection component further includes a reflector for mounting on the door handle, and the photoelectric sensor and the speed sensor are mounted on the door frame at corresponding positions at the same horizontal height as the reflector.

[0014] In one embodiment, the door closing function detection system further includes a visual interactive terminal, the signal input terminal of which is connected to the signal output terminal of the data processing unit.

[0015] In one embodiment, the door closing function detection system further includes a drive mechanism, the control terminal of which is signal-connected to the data processing unit, and the drive mechanism is used to drive the door to close according to preset force parameters.

[0016] The above solution includes the following steps in the door closing function testing method: Perform door closing operations and monitor the door's opening and closing status in real time; The system determines whether the door has been successfully closed based on the detected opening and closing status. If the door is successfully closed, the system obtains the speed data corresponding to the closed door status; if the door is not successfully closed, the system obtains the speed data corresponding to the open door status. The system calls a preset model and outputs a judgment result based on the speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door.

[0017] Specifically, the process begins by performing a door closing operation, simultaneously activating a status detection component to monitor the door's opening and closing status in real time, continuously collecting signals corresponding to changes in the door's position. Then, based on the real-time collected status signals, it determines whether the door has reached the locking position. If the door successfully completes the locking action, the system automatically matches and collects the closing speed data corresponding to that locking moment. If the door has not reached the locking position, including after contact and rebound or not reaching the locking position at all, the system automatically matches and collects the unclosed speed data corresponding to the rebound process. Finally, a pre-set judgment model in the data processing unit is invoked, and the collected door closing speed data and unclosed speed data are input into the model for calculation, directly outputting the pass / fail judgment result for this door closing function test. This invention automates the entire process of status detection, data acquisition, and result determination, eliminating the need for workers to manually record data from the equipment after closing the door and manually compare it with standards, as required by traditional manual methods. The entire process of a single inspection can be completed without human intervention, significantly reducing the inspection time for a single door and adapting to the pace of continuous batch quality inspection on the production line. Speed ​​data acquisition and pass / fail determination are both automatically executed by the system according to unified standards, avoiding errors in manual recording and inconsistent application of judgment standards by individuals, thus ensuring the consistency and accuracy of all inspection results. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a flowchart illustrating the door closing function detection method according to the first embodiment of the present invention; Figure 2 This is a flowchart illustrating the door closing function detection method according to the second embodiment of the present invention; Figure 3 This is a flowchart illustrating the door closing function detection method according to the third embodiment of the present invention. The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the embodiments of the present 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 the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their 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 at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0025] See Figure 1 , Figure 1 This is a flowchart illustrating the door closing function detection method according to the first embodiment of the present invention; the door closing function detection method includes the following steps: S1. Perform the door closing operation and monitor the door's opening and closing status in real time; Upon receiving the start command, the detection system drives the door to close, simultaneously triggering the photoelectric sensor to enter real-time operation. The sensor continuously emits detection signals to the moving edge of the door at a preset sampling frequency, capturing real-time changes in the door's position and continuously outputting a status signal indicating whether the door is currently opening, closing, or locked. This step replaces the traditional manual method of relying on human observation to determine the door's opening and closing status, eliminating reaction delays and judgment errors inherent in manual observation. It accurately captures the critical time points of door status changes, providing an accurate time reference for subsequent precise speed data matching and acquisition. Furthermore, it eliminates the need for manual monitoring, reducing manual operations in the detection process.

[0026] S2. Determine whether the door has been successfully closed based on the detected opening and closing status. If the door is successfully closed, obtain the speed data corresponding to the closed door status; if the door is not successfully closed, obtain the speed data corresponding to the unclosed door status. Based on the real-time opening / closing status signal output in step S1, the system automatically determines whether the door has successfully closed. If the door is successfully closed, it automatically retrieves the speed data corresponding to the closing state. If the door is not successfully closed, it automatically retrieves the speed data corresponding to the open state. This replaces the manual recording and matching of status and speed data in traditional solutions, achieving automatic association between status determination and corresponding speed data. This avoids errors and omissions that occur during manual data recording and ensures the one-to-one correspondence between speed data and door status, completing the data acquisition process without manual intervention.

[0027] S3. Call the preset model and output the judgment result based on the speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door.

[0028] Based on the acquired speed data of the closed and open doors, the system automatically calls a pre-configured judgment model. After inputting the two types of speed data into the model and completing the calculation, it directly outputs the pass / fail judgment result for the door closing function. All judgment logic is executed uniformly according to preset standards, which avoids calculation errors that may occur during manual calculation and eliminates the problem of inconsistent standard execution during manual judgment, ensuring the accuracy and consistency of all test results.

[0029] After receiving the start command, the detection system drives the door to close, simultaneously triggering the photoelectric sensor to continuously emit detection signals to the moving edge of the door at a preset sampling frequency, capturing the door's positional changes in real time and continuously outputting the door's current open / closed status signal. The system then automatically determines whether the door has successfully closed based on the real-time acquired open / closed status signal. If the door is determined to be locked, it automatically retrieves the speed data corresponding to the closed state; if the door is determined to be unlocked, it automatically retrieves the speed data corresponding to the open state. Finally, the system inputs the two types of speed data into a pre-configured judgment model to complete the calculation and directly outputs the pass / fail judgment result for this door closing function. This embodiment, through fully automated state detection, data matching, and result judgment, replaces the series of manual operations of observing the state, recording data, and calculating judgments in traditional manual solutions, significantly reducing the labor costs and time consumed per unit of detection, adapting to the quality inspection rhythm of mass production, and eliminating problems such as observation errors, recording errors, and inconsistent judgment standards caused by manual operations, ensuring the accuracy and consistency of all detection results.

[0030] See Figure 3 , Figure 3This is a flowchart illustrating the door closing function detection method according to a third embodiment of the present invention. In one embodiment, the step of calling a preset model and outputting a judgment result based on the acquired speed data corresponding to the door closing state and the speed data corresponding to the door not closing state includes: S31. Calculate the difference between the speed data corresponding to the closed door state and the speed data corresponding to the open door state; Based on the acquired speed data corresponding to the closed and open states of the vehicle doors, the system automatically calculates the difference between the two types of speed data according to preset logic, using it as an input parameter for pass / fail determination. This replaces manual calculation of the speed difference, avoiding calculation errors and numerical transcription deviations that may occur during manual calculations, ensuring 100% accuracy of the difference calculation results. This provides a reliable computational basis for subsequent pass / fail determination, and further improves detection efficiency by eliminating the need for manual intervention in the calculation process.

[0031] S32. Determine if the difference is less than 0.01. If the difference is less than 0.01, the judgment result is deemed qualified and marked as OK; if the difference is greater than or equal to 0.01, the judgment result is deemed unqualified and marked as NG.

[0032] The speed difference when a car door closes directly reflects the precision of the door locking mechanism and the consistency of the sealing system's resistance. During the door closing process, parameters such as the smoothness of engagement between the latch and lock body, the compression resistance of the door seal, and the damping of the hinge all affect the final locking performance of the door. Through extensive testing, it has been verified that when the difference between the critical speed at which the door can just lock and the critical speed at which it cannot lock is less than 0.01 m / s, it indicates that the door's locking mechanism's clearance, sealing resistance, and other parameters are within a reasonable range, and the consistency of the door's closing force meets design requirements. If the difference is greater than or equal to 0.01 m / s, it indicates that the locking mechanism has problems such as jamming or uneven resistance of the sealing strip, which will cause the force required by the user to close the door to vary, affecting the user experience. The required accuracy for detecting the closing speed of car doors is generally around 0.01 m / s. This accuracy matches the user's perception threshold for closing force. When the speed difference exceeds 0.01 m / s, the user can clearly feel the difference in closing force. In this embodiment, the system automatically compares the difference with a preset threshold of 0.01. If the difference is less than 0.01, a pass / fail result is output and marked as OK; if the difference is greater than or equal to 0.01, a fail / unqualified result is output and marked as NG. All judgment logic is executed according to a unified threshold, which eliminates the problems of inconsistent standards and misinterpretation of results during manual judgment, ensuring that the judgment standards for all test results are completely consistent. It also achieves automatic identification of pass / fail results, eliminating the need for manual recording of results and further reducing the possibility of human error.

[0033] In this embodiment, the workflow of calling the preset model to output the judgment result is executed sequentially: First, based on the acquired speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door, the system automatically calculates the difference between the two types of speed data according to the preset logic, which is used as the input parameter for the qualification judgment; then, the system compares the calculated speed difference with the preset threshold of 0.01. This threshold is a reasonable standard determined by combining the performance principle of the car door and a large number of engineering verifications. The speed difference when the car door is closed directly reflects the matching accuracy of the car door locking mechanism and the resistance consistency of the sealing system. During the car door closing process, the smoothness of the engagement of the latch and the lock body, the pressure of the car door sealing strip, etc., are all important factors. Parameters such as compression resistance and hinge damping affect the final locking performance of the car door. When the difference between the critical speed at which the car door can just lock and the critical speed at which it cannot lock is less than 0.01 m / s, it indicates that the parameters such as the locking mechanism clearance and sealing resistance of the car door are within a reasonable range, the consistency of the door closing force meets the design requirements, and this accuracy just matches the user's perception threshold of the closing force. When the speed difference exceeds 0.01 m / s, the user can clearly feel the difference in closing force. Therefore, if the difference is less than 0.01 after comparison, a qualified judgment result is output and marked as OK; if the difference is greater than or equal to 0.01, a unqualified judgment result is output and marked as NG. This process replaces manual calculation of speed differences, avoiding calculation errors and numerical transcription deviations that may occur during manual calculations. It ensures the accuracy of the difference calculation results, providing a reliable calculation basis for pass / fail determination. The absence of manual intervention in the calculation process further improves testing efficiency. Furthermore, all judgment logic is executed according to a unified threshold, eliminating the problems of inconsistent standards and result interpretation errors during manual judgment. This ensures that the judgment standards for all test results are completely consistent and also achieves automatic identification of pass / fail results, eliminating the need for manual recording of results and further reducing the possibility of human error.

[0034] See Figure 2 , Figure 2 This is a schematic flowchart of a door closing function detection method according to a second embodiment of the present invention; in one embodiment, the door closing function detection method further includes the following steps: S4. NG data that is deemed unqualified is stored separately in the database for verification, while OK data that is deemed qualified is automatically entered into the test report.

[0035] If the data is deemed non-compliant (NG), the entire inspection information, including the corresponding door number, status information, speed data, and difference result, is automatically stored separately in a designated database partition for verification. If the data is deemed compliant (OK), the relevant inspection information is automatically filled into the corresponding fields of the preset inspection report. This step replaces the traditional manual sorting, recording of inspection data, and manual report filling. It avoids the problems of incorrect or missing data during manual sorting, ensures traceability of non-compliant data and error-free reporting of compliant data, and saves the time spent on manual data processing and report filling, achieving automated management of the entire lifecycle of inspection data.

[0036] See Figure 2 , Figure 2 This is a flowchart illustrating the door closing function detection method according to the first embodiment of the present invention; in one embodiment, the door closing function detection method further includes the following steps: S5. After all doors have been inspected, a summary inspection report and speed data trend chart are automatically generated based on the full inspection data.

[0037] Once the inspection process for all doors in a batch is completed, the system automatically retrieves the inspection data for all doors stored in the database. Following preset report templates and chart generation rules, it automatically summarizes the batch information, the number and percentage of qualified / unqualified doors, and details of abnormal data to form a summary inspection report. Simultaneously, it extracts the speed data from all doors to generate a corresponding trend chart. This step replaces the traditional method of manually summarizing all data, calculating indicators, and manually creating reports and trend charts. It avoids calculation errors and chart plotting deviations that occur during manual statistics, ensuring the summary results perfectly match the original inspection data. It also significantly reduces the time spent processing results after batch inspections. The generated trend charts can visually present the fluctuation patterns of speed data, providing data support for optimizing subsequent door assembly processes and proactively identifying potential quality issues.

[0038] Furthermore, to achieve the above objectives, the present invention also provides a readable storage medium storing a door closing function detection program. When executed by a processor, the door closing function detection program implements the steps of the door closing function detection method described above. Storing the aforementioned intelligent deceleration program corresponding to the door closing performance detection in the readable storage medium enables convenient portability and reuse of the detection method logic. It can be flexibly integrated into door detection equipment on different production lines without requiring separate program logic development for each device, reducing adaptation costs. Simultaneously, the stored program execution logic is fixed and unified, and when called by the processor, it can completely reproduce the standardized detection process, avoiding deviations in detection logic under different devices and scenarios, ensuring the consistency and reliability of door closing performance detection, and facilitating unified updates and maintenance of subsequent program versions, effectively reducing the operation and maintenance costs of the detection system.

[0039] Furthermore, to achieve the above objectives, the present invention also provides a door closing function detection system, which applies the above-described door closing function detection method. The door closing function detection system includes: The status detection component includes a photoelectric sensor and a speed sensor. The photoelectric sensor is used to collect the door opening and closing status signal in real time, and the speed sensor is used to collect speed data. The data transmission unit is signal-connected to the status detection component. The data processing unit is connected to the data transmission unit by signal. The data processing unit has a built-in preset model to receive door opening and closing status signals and speed data and output the qualification judgment result. At the same time, it completes data storage, report generation and trend chart drawing.

[0040] When the door inspection station receives the signal that the door to be inspected has arrived, the system triggers a start command. The photoelectric sensors in the status detection component, which are located at the door lock position and the door moving edge, immediately start up and continuously emit detection signals to the detection area at a sampling frequency of no less than 100Hz. This accurately captures the entire process of the door's state changes from opening and closing to reaching the lock position, and outputs the door's opening and closing status signal in real time. At the same time, the high-precision speed sensor located next to the door's movement path starts up and collects instantaneous speed data at different positions during the door closing process. Both types of raw data are uploaded to the data processing unit in real time through a low-latency data transmission unit in an encrypted manner to avoid loss or omission during data transmission. After receiving the data, the data processing unit first calls the built-in preset verification logic to verify the integrity and validity of the original data. After confirming that the data is anomaly-free, it calls the preset model to complete the entire process of determining the door closing status, matching the corresponding speed data, calculating the speed difference, and comparing the pass / fail threshold. It then outputs the OK / NG pass / fail judgment result for the corresponding door. Simultaneously, the data is classified and stored according to preset rules: NG data, along with the corresponding door's unique number, inspection time, status details, original speed parameters, and other full-dimensional information, is stored separately in the data processing unit's anomaly database partition, reserving a manual verification port for subsequent quality traceability; OK data is automatically filled in by matching the preset single-vehicle inspection report template fields. When all doors in a batch have been inspected, the data processing unit automatically pulls the full batch inspection data, automatically calculates indicators such as batch pass rate, anomaly type distribution, speed data extreme values ​​and average values, and generates a standardized summary inspection report. At the same time, it extracts the closing speed data of all doors and automatically draws a speed fluctuation trend chart according to the door number and inspection time sequence, intuitively presenting the changing patterns of the speed data.This embodiment achieves fully automated operation of the entire door closing function detection process—from data acquisition and calculation to result output and data management—through a deep integration of photoelectric sensors, speed sensors, and built-in detection methods. Compared to traditional manual inspection methods, the inspection time per door is reduced, making it suitable for the fast-paced quality inspection needs of OEMs in mass production. The entire process eliminates the need for manual intervention in data recording, calculation, and data entry, completely avoiding problems such as observation errors, recording mistakes, and inconsistent judgment standards caused by human operation. The accuracy of the detection results is stable, ensuring the reliability of all doors of the same batch and model. The testing standards are completely unified; at the same time, each component adopts a modular design, and only the installation position of the sensor needs to be adjusted according to the door size and locking position of different car models to quickly complete the testing system adaptation of the new production line without redeveloping the core logic, which greatly reduces the production line adaptation cost; the final output speed trend graph can intuitively expose the batch fluctuation problems of lock body fit gap, sealing strip compression resistance and hinge damping during the door assembly process, providing accurate data support for the process department to optimize assembly parameters and identify potential batch quality hazards in advance, effectively improving the overall quality control level of the vehicle door closing performance.

[0041] In one embodiment, the state detection component further includes an I / O conversion module. The signal output terminals of both the photoelectric sensor and the speed sensor are connected to the signal input terminal of the I / O conversion module. The I / O conversion module converts the analog signals collected by the photoelectric sensor and the speed sensor into standard digital signals for output. By adding an I / O conversion module to the state detection component and connecting the signal output terminals of the photoelectric sensor and the speed sensor to the signal input terminal of the I / O conversion module, the standardized conversion of the raw analog signals collected by the two types of sensors into standard digital signals recognizable by the system can be achieved. On the one hand, there is no need to develop separate signal adaptation interfaces for photoelectric sensors and speed sensors of different models and output protocols. Only the signal parsing rules of the I / O conversion module need to be adjusted to be compatible with the access requirements of multiple types of sensors, which greatly reduces the adaptation cost when selecting sensors for different production lines and improves the flexibility of the hardware configuration of the detection system. On the other hand, the I / O conversion module can filter and calibrate the fluctuating analog signals output by the sensors to avoid deviations in the original data caused by electromagnetic interference and signal transmission attenuation on site. This ensures that the converted digital signal completely matches the actual collected values ​​of the sensors, improving the accuracy of the detection data from the source of data acquisition and providing a reliable input basis for the difference calculation and qualification judgment of the subsequent data processing unit.

[0042] In one embodiment, the state detection component further includes a reflector, which is used to install on the door handle. A photoelectric sensor and a speed sensor are installed on the door frame at corresponding positions at the same horizontal height as the reflector. During the initial installation phase, the highly reflective reflector is first flatly attached to the center of the outer handle of the door to be inspected using adhesive or a special clip, ensuring that the reflector surface is perpendicular to the door's movement direction to avoid reflection angle deviation. Then, at the horizontal height of the door frame corresponding to the handle's position after the door is closed, the photoelectric sensor and speed sensor are fixed respectively using an adjustable bracket. The pitch and horizontal angle of the bracket are adjusted so that the sensor's detection transmitter is directly facing the reflector's position when the door is fully closed. During the debugging phase, the door is manually opened and closed several times to confirm that the sensor can stably capture the reflected signal from the reflector when the door moves through the entire closed path, completing the installation calibration. During formal testing, as the car door moves towards the closing direction, the reflector moves synchronously along the horizontal path with the door handle. The photoelectric sensor accurately identifies whether the door has reached the locked position by capturing the reflected signal of the reflector and outputs the corresponding open / closed status signal. The speed sensor accurately collects the instantaneous speed data of the door closing process by capturing the frequency change of the reflected signal during the movement of the reflector. The same height alignment design of the reflector and the sensor significantly improves the accuracy of sensor signal capture and avoids signal loss or data deviation caused by reflective surface misalignment or height difference. At the same time, the adjustable bracket design adapts to the differences in door size and handle position of different car models. Only the sensor installation height and angle need to be adjusted to complete the testing adaptation for different car models. There is no need to replace hardware components, which greatly reduces the adaptation cost of production line changeover. The design of installing the reflector at the door handle position and fixing the sensor to the door frame eliminates the need to add additional testing fixtures to the door and does not cause additional interference to the opening and closing movement and locking process of the door itself. This ensures that the test data completely reflects the actual closing performance of the door. At the same time, the installation and operation are simple and convenient, and the debugging cost is low.

[0043] In one embodiment, the door closing function testing system further includes a visual interactive terminal, the signal input terminal of which is connected to the signal output terminal of the data processing unit. By adding a visual interactive terminal connected to the signal output terminal of the data processing unit to the door closing function testing system, all the testing information output by the data processing unit can be presented intuitively to the on-site quality inspectors. This not only displays the pass / fail judgment result of a single door, the corresponding speed test value, opening and closing status, and other detailed information in real time, but also simultaneously displays summary content such as batch test pass rate statistics, speed data trend charts, and abnormal NG data details. Furthermore, it supports quality inspectors in retrieving historical test records, exporting test reports for specified batches, and initiating review processes for abnormal data as needed through the terminal's interactive functions.

[0044] In one embodiment, the door closing function detection system further includes a drive mechanism. The control terminal of the drive mechanism is connected to the data processing unit via a signal connection. The drive mechanism is used to drive the door to close according to preset force parameters. A servo electric push rod with force control feedback is configured as the power output terminal. A soft rubber buffer joint is added to the end of the push rod, and it is fixed to the detection station bracket on the outside of the door via an adjustable mounting base. This adapts to the height and force application position of different car models. The drive controller of the servo electric push rod is connected to the control signal output terminal of the data processing unit and can receive force parameter commands at different levels. This achieves complete standardization of the force applied when closing the car door. The data processing unit can automatically call preset parameters for force magnitude, speed, and position according to the testing standards of different car models. The drive mechanism strictly follows the parameters to output thrust and complete the door closing action, completely replacing the traditional manual pushing and pulling method of car door testing. This avoids fluctuations in test data caused by differences in the force magnitude, angle, and position applied by different quality inspectors. The testing conditions of car doors of the same model are highly consistent, effectively ensuring the fairness and reliability of the test results. The servo drive with force control feedback can verify the execution accuracy of the force parameters in real time. If the actual force parameters deviate from the preset value, it will immediately send a warning to the data processing unit to avoid distortion of test results caused by abnormal force. At the same time, the soft buffer joint can prevent scratches on the car door paint during the force application process and will not damage the appearance of the car door. The drive mechanism can achieve fully automated linkage with the testing process. After the data processing unit receives the signal that the door to be inspected is in place, it can automatically trigger the drive mechanism to perform the closing action without manual intervention.

[0045] The above are merely optional embodiments of the present invention and do not limit the scope of protection of the present invention. All equivalent structural transformations made under the technical concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A method for detecting the closing function of a vehicle door, characterized in that, The method for detecting the door closing function includes the following steps: Perform door closing operations and monitor the door's opening and closing status in real time; The system determines whether the door has been successfully closed based on the detected opening and closing status. If the door is successfully closed, the system obtains the speed data corresponding to the closed door status; if the door is not successfully closed, the system obtains the speed data corresponding to the unclosed door status. The system invokes a preset model and outputs a judgment result based on the speed data corresponding to the closed state of the car door and the speed data corresponding to the open state of the car door.

2. The method of claim 1, wherein The step of calling a preset model and outputting a judgment result based on the acquired speed data corresponding to the closed door state and the speed data corresponding to the open door state includes: Calculate the difference between the speed data corresponding to the closed door state and the speed data corresponding to the open door state; Determine whether the difference is less than 0.

01. If the difference is less than 0.01, the determination result is deemed qualified and marked as OK; if the difference is greater than or equal to 0.01, the determination result is deemed unqualified and marked as NG.

3. The method of claim 2, wherein The method for detecting the door closing function also includes the following steps: NG data that is deemed unqualified is stored separately in the database for verification, while OK data that is deemed qualified is automatically entered into the test report.

4. The method for detecting the door closing function according to claim 1, characterized in that, The method for detecting the door closing function also includes the following steps: After all doors have been inspected, a summary inspection report and a speed data trend chart are automatically generated based on the full inspection data.

5. A readable storage medium, characterized by, The readable storage medium stores a door closing function detection program, which, when executed by a processor, implements the steps of the door closing function detection method as described in any one of claims 1 to 4.

6. A door-closing function detection system that applies the door-closing function detection method according to any one of claims 1 to 4, characterized by The door closing function detection system includes: A status detection component, comprising a photoelectric sensor and a speed sensor, wherein the photoelectric sensor is used to collect door opening and closing status signals in real time, and the speed sensor is used to collect speed data; A data transmission unit, which is signal-connected to the state detection component; The data processing unit is signal-connected to the data transmission unit. The data processing unit has a built-in preset model for receiving the door opening / closing status signal and the speed data and outputting the pass / fail judgment result. At the same time, it completes data storage, report generation and trend chart drawing.

7. The door-closing-function detection system according to claim 6, characterized by The state detection component also includes an I / O conversion module. The signal output terminals of the photoelectric sensor and the speed sensor are both connected to the signal input terminal of the I / O conversion module. The I / O conversion module is used to convert the analog signals collected by the photoelectric sensor and the speed sensor into standard digital signals for output.

8. The door-closing-function detection system according to claim 6, characterized by The status detection component also includes a reflector, which is used to install on the door handle. The photoelectric sensor and the speed sensor are used to install on the door frame at corresponding positions at the same horizontal height as the reflector.

9. The door-closing-function detection system according to claim 6, characterized by The door closing function detection system also includes a visual interactive terminal, the signal input terminal of which is connected to the signal output terminal of the data processing unit.

10. The door-closing-function detection system according to claim 6, characterized by The door closing function detection system also includes a drive mechanism. The control terminal of the drive mechanism is connected to the data processing unit via a signal. The drive mechanism is used to drive the door to close according to preset force parameters.

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