Skylight assembly displacement testing method

Abstract

The invention relates to a skylight assembly displacement test method. The method comprises the steps of test sample piece state confirmation, test site confirmation, sensor parameter setting, sensor point distribution, road test, data processing, test bed iteration and result output. According to the invention, the reasonable position of the skylight is selected to install the displacement sensor, the experiment is carried out in the test field with various characteristic pavements, and the displacement of the skylight sensor setting point in each direction under the various characteristic pavements is respectively recorded, so that the driving conditions of the vehicle on various types of pavements are completely and accurately reproduced; the conventional use condition of a user is covered, the displacement of the skylight under different road surfaces is comprehensively recorded, and the accuracy, comprehensiveness and accuracy of the test are improved. According to the invention, operability is realized, useless or interfering data can be eliminated, required displacement data can be optimized and highlighted, the displacement change of the skylight assembly on a test road surface can be better reflected, the displacement data can be introduced into a test bench subsequently, and displacement simulation of a sample piece is carried out on the bench.

Description

Technical Field

[0001] The invention belongs to the technical field of automobiles, and in particular relates to a sunroof assembly displacement testing method. Background Art

[0002] The sunroof is a very important configuration on the car. In recent years, it has quickly spread from mid-to-high-end cars to mid-range cars and even micro cars. Due to the expansion of the application scenarios of the sunroof, according to the JD-Power survey, users' complaints about the sunroof assembly are also increasing. An important component of user complaints is the abnormal noise and vibration of the sunroof during driving. The market abnormal noise complaints are classified by assembly, among which the sunroof is one of the main assembly components where abnormal noise occurs. Therefore, the study of the movement process of the sunroof assembly components during the driving of the vehicle has gradually become important. Based on this, it is urgent to develop a sunroof assembly displacement test method to effectively solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a sunroof assembly displacement testing method, which simulates the operation of the sunroof assembly under different road conditions by setting sensor layout points, selecting reasonable test sites and road surfaces, recording the displacement of the sunroof assembly, and processing the data, thereby achieving operability and being able to more conveniently record the displacement of the sunroof assembly to solve the problem of the lack of prediction of key point displacement detection methods of the existing sunroof assembly during vehicle driving.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A method for testing the displacement of a sunroof assembly comprises the following steps:

[0006] Step A, test sample status confirmation: the vehicle and sunroof sample status must be confirmed, and the test vehicle parameters and test sample production number must be recorded; before the evaluation begins, the vehicle sunroof must be cleaned and debris inside the vehicle must be removed to ensure that the test process is not disturbed;

[0007] Step B: Confirm the test site: Confirm whether the road conditions and test environment, including temperature and humidity, meet the requirements; the road surface is clean and free of debris to ensure that the test process is completed without interference;

[0008] Step C, sensor parameter setting: confirm the status of the sensor, data cable and computer, connect the sensor and computer, set the sensitivity of the sensor, and ensure the accuracy of the data collected by the sensor;

[0009] Step D, sensor placement: Arrange the sensor points on the skylight. When arranging, use alcohol to clean the points to be arranged to ensure that there are no stains or debris. Use glue to firmly fix the sensor on the required point to ensure the correctness of displacement information collection. Connect the sensor to the computer through a data cable.

[0010] Step E: road test: the test vehicle with the sensor and test sample installed is placed in a test site that meets the requirements, and the test is carried out on the corresponding road according to the set speed and recorded. The recorded data is saved in the form of a displacement-time diagram;

[0011] Step F, data processing, respectively processing the longitudinal displacement, lateral displacement and vertical displacement recorded by each sensor;

[0012] Step G, test bench iteration, the processed data is imported into the vibration exciter bench, and the displacement of the sunroof assembly on the test road is reproduced on the test bench. The displacement of the sunroof assembly on the test road is repeatedly collected and recorded, and the displacement data of the sunroof assembly is iterated. After the test bench iteration is completed, the displacement of the test sample during the test process can be covered by the test bench, thereby reducing the test time and cost.

[0013] Step H, result output, organize and output the above test process and test data to form a sunroof assembly displacement record test report.

[0014] Further, step A: confirm that the vehicle and sunroof samples should be in good condition and function properly, the sunroof should be able to open / close normally and be in good installation condition; record the test vehicle parameters, including vehicle number, model, vehicle identification number, vehicle mileage, and record the test sample production number.

[0015] Further, step B: the road conditions of the test site should have the following road surface and the road surface conditions meet the test requirements, the test temperature should be between -10°C and 40°C, and the humidity should be between 0-95%.

[0016] Further, step C: the sensor, data cable and computer should be in good condition and fully functional, use the data cable to connect the sensor and the computer, and set the sensitivity of the sensor according to the x, y, and z direction sensitivity parameters marked on the sensor.

[0017] Further, step D: when the road type is a dilapidated road, drive at a uniform speed of 10km / h or 20km / h; when it is an arched and uneven road, drive at a uniform speed of 10km / h; when it is an angle railway, drive at a uniform speed of 30km / h; when it is a small round bump, drive at a uniform speed of 10km / h or 20km / h; when it is a cement road, drive at a uniform speed of 50km / h; when it is a washboard road, accelerate from 10km / h to 30km / h; when it is a cobblestone road, drive at a uniform speed of 10km / h or 20km / h; when it is a Belgium road, accelerate from 10km / h to 30km / h; when it is a fish scale pit, drive at a uniform speed of 20km / h; when it is a step and twisted road, drive at a uniform speed of 10km / h; when it is a large round bump, drive at a uniform speed of 10km / h or 20km / h.

[0018] Further, step E: each road is recorded three times, and each recording time is not less than 20 seconds.

[0019] Further, in step E, the test temperature is 23° C., the humidity is 65%, the vehicle immersion time is 4 hours, and the test item is abnormal noise evaluation.

[0020] Further, step F: select the target data, select the start time and end time as required to intercept and copy the data, and set the maximum frequency and maximum value of the data as required. After the processing is completed, select the data saving format as required to save it, and complete the data processing.

[0021] Furthermore, in step F, the data should be processed to remove the part where the vehicle has just started but has not entered the road to be tested and the part where the vehicle has already driven out of the road to be tested, and the length of the processed data should be greater than 15 seconds.

[0022] Furthermore, in step G, the test bench data is iterated by importing the test data three times.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a comprehensive sunroof assembly displacement recording test method, by selecting a reasonable position of the sunroof to install a displacement sensor and conducting experiments in a test field with various characteristic roads, respectively recording the displacements of sunroof sensor setting points in various directions on various characteristic roads, completely and accurately reproducing the driving conditions of the vehicle on various types of roads, covering the regular use conditions of users, comprehensively recording the displacements of the sunroof on different roads, and improving the accuracy of the test;

[0025] According to the user's usage habits and the sunroof displacement characteristics, the present invention proposes a method for distributing displacement sensors, various typical road surfaces required for testing and their corresponding speeds, thereby improving the comprehensiveness and accuracy of the experiment.

[0026] Through the data recording and processing method, the present invention can process the collected displacement data according to different needs, thereby achieving operability, being able to eliminate useless or interfering data, optimizing and highlighting the required displacement data, and better reflecting the displacement changes of the sunroof assembly on the test road surface. Subsequently, the displacement data can be imported into the test bench to perform displacement simulation of the sample on the bench. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 Flow chart of the steps of the sunroof assembly displacement test method. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with embodiments:

[0030] The sunroof assembly displacement test method of the present invention is as follows: Figure 1 As shown, the following steps are included:

[0031] Step 1, confirm the status of the test sample. The status of the vehicle and sunroof samples must be confirmed, and the test vehicle parameters and test sample production number must be recorded. Specifically, confirm that the vehicle and sunroof samples should be in good condition and fully functional, and the sunroof should be able to open / close normally and be in good installation condition. Record the test vehicle parameters, including vehicle number, model, vehicle identification number, vehicle mileage, and record the test sample production number. Before the evaluation begins, the vehicle sunroof must be cleaned and debris removed from the vehicle to ensure that the experimental process is not disturbed.

[0032] Step 2, test site confirmation. Confirm whether the test site road conditions, test environment, including temperature and humidity meet the requirements. Specifically, the test site road conditions should have the following road surface and the road surface conditions meet the test requirements. The test temperature should be between -10℃-40℃ and the humidity should be between 0-95%. The road surface is clean and free of debris to ensure that the test process is completed without interference.

[0033] Step 3, sensor parameter setting. Confirm the status of the sensor, data cable and computer, connect the sensor and computer, and set the sensitivity of the sensor. Specifically, the sensor, data cable and computer should be in good condition and fully functional. Use the data cable to connect the sensor and computer, and set the sensitivity of the sensor according to the x, y, and z direction sensitivity parameters marked on the sensor to ensure the accuracy of the sensor data collection.

[0034] Step 4, sensor placement. Arrange the sensor points on the skylight. Specifically, arrange the sensor points on the skylight according to the requirements of Table 1. When arranging, use alcohol to wipe and clean the points to be arranged to ensure that there are no stains or debris. Use glue to firmly fix the sensor on the required point to ensure the correctness of displacement information collection. Connect the sensor to the computer through a data cable.

[0035] Table 1 Sunroof assembly displacement test method

[0036]

[0037]

[0038] Step 5, road test. The test vehicle with the sensors and test samples installed is placed in a test site that meets the requirements. The test is carried out on the corresponding road at the speed required in Table 2. Each road is recorded three times, and each recording time is not less than 20 seconds. The recorded data is saved in the computer in the form of a displacement-time diagram.

[0039] Table 2 Test roads and vehicle speeds

[0040]

[0041] Step 6, data processing, respectively process the longitudinal displacement, lateral displacement and vertical displacement recorded by each sensor, select the target data, select the start time and end time to intercept and copy the data as required, and set the maximum frequency and maximum value of the data as required. After the processing is completed, select the data saving format as required to save and complete the data processing. When processing the data, the part that has not entered the road to be tested when the vehicle is just started and the part that has already left the road to be tested should be removed, and the length of the processed data should be greater than 15 seconds to ensure data integrity and improve data simplicity.

[0042] Table 3 Normal temperature test environment conditions

[0043] Working conditions Test temperature (℃) humidity(%) Immersion time (h) Test Project normal temperature 23 65 4 Abnormal sound evaluation

[0044] Step 7, test bench iteration, the processed data is imported into the vibration test bench, the displacement of the sunroof assembly on the test road is reproduced on the test bench, and the displacement data of the sunroof assembly on the test road is iterated by collecting and entering the displacement of the sunroof assembly on the test road multiple times. After the test bench iteration is completed, the displacement of the test sample during the test can be covered by the test bench, reducing the test time and cost.

[0045] Step 8, result output, organize and output the above test process and test data to form a sunroof assembly displacement record test report.

[0046] Example 1

[0047] The sunroof assembly of a passenger car is a newly developed structure. During driving, the sunroof assembly shakes and makes knocking noises. It is necessary to obtain the displacement of the sunroof assembly during driving to solve the problem.

[0048] 1. Make sure that the vehicle and sunroof samples are in good condition and fully functional. The sunroof should be able to open / close normally and be in good installation condition. Record the test vehicle parameters, including vehicle number, model, vehicle identification number, vehicle mileage, and test sample production number. Before the evaluation begins, clean the vehicle sunroof and remove debris from the vehicle to ensure that the experimental process is not disturbed.

[0049] 2. Confirm the test site and select a test site with special road surfaces that meet the requirements. The test temperature should be between -10℃ and 40℃, and the humidity should be between 0-95%. Before the test, the road surface should be clean and free of debris.

[0050] 3. Set the sensor parameters. The sensor, data cable and computer should be in good condition and fully functional. Use the data cable to connect the sensor and computer, and set the sensor sensitivity according to the x, y, and z direction sensitivity parameters marked on the sensor.

[0051] 4. Use alcohol to clean the points to be arranged, ensure that there are no stains or debris, arrange the sensor to the diagonal of the skylight, use glue to firmly fix the sensor to the required point, use tape to fix the data cable, and use the data cable to connect the sensor to the computer.

[0052] 5. The test vehicle with installed sensors and test samples is placed in a test site that meets the requirements. There are two testers, one is the driver and the other is the recorder. The driver conducts the test according to the corresponding driving speed of the tested road. Each road is tested three times. The recorder records each test situation separately. Each recording time is not less than 20 seconds. The recorded data is saved in the computer in the form of a displacement-time diagram.

[0053] 6. Process the longitudinal displacement, lateral displacement and vertical displacement recorded by each sensor respectively, select the target data, select the start time and end time to intercept the data, remove the part when the vehicle just started and did not enter the road to be tested and the part when the vehicle has already driven out of the road to be tested, and each data segment is intercepted for 15 to 20 seconds. After completion, save it according to the bench data saving format that can be imported into the test to complete the data processing.

[0054] 7. Import the processed data into the shaker bench and iterate the test bench data by importing the test data for three times. Select the sunroof assembly samples from the same batch and reproduce the displacement of the sunroof assembly on the test bench when driving on the test road, which can reduce the test time and cost and increase the reliability of the results.

[0055] Result output: organize and output the above test process and test data to form a sunroof assembly displacement record test report.

[0056] Starting from the monitoring of the motion state of the sunroof assembly, the present invention provides a sunroof assembly displacement recording test method, filling the gap in this field. By observing the displacement of the sunroof during vehicle driving conditions, a displacement sensor layout method and layout position are proposed, thereby improving the accuracy of displacement acquisition. Based on user usage habits, the present invention proposes a test road surface and corresponding passing speed, covering the conditions that users may encounter in normal vehicle use, thereby improving the comprehensiveness, reliability and accuracy of data acquisition. The present invention provides a sunroof assembly displacement data acquisition and processing method, proposes a method for subsequent application analysis and data processing, and provides a method for data iteration on the test bench through data pairs, thereby effectively reducing the testing cost.

[0057] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for testing the displacement of a sunroof assembly, characterized in that: The following steps are involved: Step A, test sample status confirmation: the vehicle and sunroof sample status must be confirmed, and the test vehicle parameters and test sample production number must be recorded; before the evaluation begins, the vehicle sunroof must be cleaned and debris inside the vehicle must be removed to ensure that the test process is not disturbed; Step B: Confirmation of test site; Confirm whether the road conditions and experimental environment of the experimental site, including temperature and humidity, meet the requirements; the road surface is clean and free of debris to ensure that the experimental process is completed without interference; Step C, sensor parameter setting: confirm the status of the sensor, data cable and computer, connect the sensor and computer, set the sensitivity of the sensor, and ensure the accuracy of the data collected by the sensor; Step D, sensor placement: Arrange the sensor points on the skylight. When arranging, use alcohol to clean the points to be arranged to ensure that there are no stains or debris. Use glue to firmly fix the sensor on the required point to ensure the correctness of displacement information collection. Connect the sensor to the computer through a data cable. Step E: road test: the test vehicle with the sensor and test sample installed is placed in a test site that meets the requirements, and the test is carried out on the corresponding road according to the set speed and recorded. The recorded data is saved in the form of a displacement-time diagram; Step F, data processing, respectively processing the longitudinal displacement, lateral displacement and vertical displacement recorded by each sensor; Step G, test bench iteration, the processed data is imported into the vibration exciter bench, the displacement of the sunroof assembly on the test road is reproduced on the test bench, and the displacement data of the sunroof assembly on the test road is iterated by collecting and recording the displacement of the sunroof assembly on the test road for multiple times; After completing the test bench iteration, the test bench can cover the displacement of the test sample during the test process, reducing the test time and cost; Step H, result output, organize and output the above test process and test data to form a sunroof assembly displacement record test report.

2. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step A: Confirm that the vehicle and sunroof sample should be in good condition and function properly, the sunroof should be able to open / close normally and be in good installation condition; record the test vehicle parameters, including vehicle number, model, vehicle identification number, vehicle mileage, and record the test sample production number.

3. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step B: The road conditions at the test site should have the following road surface and the road conditions should meet the test requirements. The test temperature should be between -10℃-40℃ and the humidity should be between 0-95%.

4. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step C: The sensor, data cable, and computer should be in good condition and fully functional. Use the data cable to connect the sensor and computer. Set the sensor sensitivity according to the x, y, and z sensitivity parameters marked on the sensor.

5. The sunroof assembly displacement testing method according to claim 1, characterized in that: Step D: When the road type is a dilapidated road, drive at a uniform speed of 10km / h or 20km / h; when it is an arched and uneven road, drive at a uniform speed of 10km / h; when it is an angle railway, drive at a uniform speed of 30km / h; when it is a small round bump, drive at a uniform speed of 10km / h or 20km / h; when it is a cement road, drive at a uniform speed of 50km / h; when it is a washboard road, accelerate from 10km / h to 30km / h; when it is a cobblestone road, drive at a uniform speed of 10km / h or 20km / h; when it is a Belgium road, accelerate from 10km / h to 30km / h; when it is a fish scale pit, drive at a uniform speed of 20km / h; when it is a step and twisted road, drive at a uniform speed of 10km / h; when it is a large round bump, drive at a uniform speed of 10km / h or 20km / h.

6. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step E: Record each road three times, with each recording lasting no less than 20 seconds.

7. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step E: the test temperature is 23°C, the humidity is 65%, the vehicle immersion time is 4h, and the test item is abnormal noise evaluation.

8. The sunroof assembly displacement testing method according to claim 1, characterized in that: Step F: Select the target data, select the start time and end time to intercept and copy the data as required, and set the maximum frequency and maximum value of the data as required. After the processing is completed, select the data saving format as required to save the data and complete the data processing.

9. The sunroof assembly displacement testing method according to claim 1, characterized in that: Step number F, when processing the data, the part where the vehicle has just started but has not entered the road to be tested and the part where the vehicle has already driven out of the road to be tested should be removed and the length of the processed data should be ensured to be greater than 15 seconds.

10. A sunroof assembly displacement testing method according to claim 1, characterized in that: Step G, iterate the test bench data by importing 3 test data.

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