Bumper rigidity detection method
By dividing grids in the area to be detected by bumper, determining multiple rigid detection points and measuring their deformation values, the problem of low rigid detection accuracy in the prior art is solved, and more systematic and detailed detection results are achieved.
Patent Information
- Application Number
- CN202510087169.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-04-25
AI Technical Summary
In the prior art, the accuracy of bumper rigidity detection results is low, and manual compression detection cannot be carried out in detail.
Using a grid-based detection method, multiple rigid detection points in the area to be detected by the bumper are determined, preset pressure is applied to each rigid detection point, and their deformation value is measured, and the rigid detection result of the area to be detected is determined based on the deformation values of all rigid detection points.
Through the grid detection method, the entire area to be detected in the bumper can be more comprehensively covered, providing more uniform and detailed measurement data, and improving the accuracy of the bumper rigidity detection results.
Smart Images
Figure CN119880310A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automobile bumper rigidity detection, and in particular to a bumper rigidity detection method. Background Art
[0002] In the related art, the bumper rigidity test is generally carried out by manual testing, that is, the operator presses the area to be tested on the bumper by hand, and then uses a ruler to measure the depression value of the bumper after pressing, and the bumper rigidity of the car is measured accordingly. However, the manual pressing test method cannot achieve detailed testing, and the accuracy of the bumper rigidity test results obtained by this method is difficult to guarantee. Summary of the invention
[0003] The main purpose of the present application is to provide a bumper rigidity detection method, aiming to solve the technical problem of low accuracy of bumper rigidity detection results in related technologies.
[0004] To achieve the above purpose, the present application proposes a bumper rigidity detection method, which includes:
[0005] Determine a plurality of rigid detection points within the area to be detected of the bumper; wherein the rigid detection points are grid intersections obtained by dividing the area to be detected into grids according to a preset grid size;
[0006] For each rigidity detection point, a preset pressure is applied to the rigidity detection point, and a deformation value of the rigidity detection point under the preset pressure is determined;
[0007] Based on the deformation values of all rigid detection points, the rigid detection result of the area to be detected is determined.
[0008] In one embodiment, for each rigidity detection point, the step of applying a preset pressure to the rigidity detection point and determining the deformation value of the rigidity detection point under the preset pressure includes:
[0009] For each rigid detection point, a preset pressure is applied to the rigid detection point, and a first deformation value of the bumper at the first rigid detection point and a second deformation value of the bumper at the second rigid detection point are obtained; wherein the first rigid detection point and the second rigid detection point are two rigid detection points on the same grid line as the rigid detection point, and the distance from the first rigid detection point to the rigid detection point is not equal to the distance from the second rigid detection point to the rigid detection point; the first deformation value is a distance change value of the first rigid detection point in a direction of applying the preset pressure when a preset pressure is applied to the rigid detection point; the second deformation value is a distance change value of the second rigid detection point in a direction of applying the preset pressure when a preset pressure is applied to the rigid detection point;
[0010] Based on the first deformation value and the second deformation value, a deformation value of the rigidity detection point is determined.
[0011] In one embodiment, before the step of determining the deformation value of the rigidity detection point based on the first deformation value and the second deformation value, the step further includes:
[0012] Based on the preset grid size, determining a first distance value between a first rigid detection point and a second distance value between a second rigid detection point and a second rigid detection point;
[0013] The step of determining the deformation value of the rigid detection point based on the first deformation value and the second deformation value comprises:
[0014] Determine the deformation value of the rigid detection point based on Formula 1, the first deformation value, the second deformation value, the first distance value, and the second distance value;
[0015] Formula 1 is: Among them, A is the deformation value of the rigid detection point, B1 is the first deformation value, B2 is the second deformation value, X is the first distance value, Y is the second distance value, and C is the intermediate variable.
[0016] In one embodiment, the step of applying a preset pressure to the rigidity detection point and obtaining a first deformation value of the bumper at the first rigidity detection point and a second deformation value at the second rigidity detection point includes:
[0017] The rigid detection point is pressed by a force measuring device to apply a preset pressure to the rigid detection point, and a first deformation value and a second deformation value are obtained by a distance meter.
[0018] In one embodiment, the force measuring device comprises a force meter.
[0019] In one embodiment, the rangefinder comprises an infrared rangefinder.
[0020] In one embodiment, the step of determining the rigidity detection result of the area to be detected based on the deformation values of all rigidity detection points includes:
[0021] When the deformation values of all rigid detection points meet the preset judgment standard, it is determined that the rigid detection result of the area to be detected is normal.
[0022] In one embodiment, when the deformation values of all rigid detection points meet the preset judgment standard, the step of determining that the rigid detection result of the to-be-detected area is normal includes:
[0023] When the area to be tested is the side area of the front bumper, the preset pressure is 50N and the deformation values of all rigidity test points do not exceed 10mm, the rigidity test result of the side area of the front bumper is determined to be normal; the preset pressure is applied by a pressure device with a pressure head, and the pressure head is a circular plane with a diameter of 20mm.
[0024] In one embodiment, when the deformation values of all rigid detection points meet the preset judgment standard, the step of determining that the rigid detection result of the to-be-detected area is normal further includes:
[0025] When the area to be tested is the side area of the rear bumper, the preset pressure is 50N and the deformation values of all rigidity test points do not exceed 15mm, the rigidity test result of the side area of the rear bumper is determined to be normal; the preset pressure is applied by a pressure device with a pressure head, and the pressure head is a circular plane with a diameter of 20mm.
[0026] In one embodiment, the preset grid size is 30 mm×30 mm.
[0027] One or more technical solutions proposed in this application have at least the following technical effects:
[0028] The bumper rigidity detection method provided in the present application can determine multiple rigidity detection points within the bumper's detection area; wherein the rigidity detection points are grid intersections obtained by dividing the detection area into grids according to a preset grid size; then for each rigidity detection point, a preset pressure is applied to the rigidity detection point, and the deformation value of the rigidity detection point under the preset pressure is determined; thus, the rigidity detection result of the detection area can be determined based on the deformation values of all rigidity detection points. Compared with the manual pressing and detection method used in the related art, the grid-based detection method used in the present application can more comprehensively cover the entire detection area of the bumper, provide more uniform and detailed measurement data, and the bumper rigidity detection result obtained thereby is more systematic and comprehensive, which can improve the accuracy of the bumper rigidity detection result. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0031] Figure 1 A schematic diagram of a process flow provided for Embodiment 1 of the bumper rigidity detection method of the present application;
[0032] Figure 2 This is a schematic diagram of the grid division of the area to be detected of an example car bumper;
[0033] Figure 3 It is a detailed flow chart of step S200;
[0034] Figure 4 When the first rigid detection point and the second rigid detection point are on the same side Figure 2 Schematic diagram of the press test at the middle rigidity test point 1;
[0035] Figure 5 When the first rigid detection point and the second rigid detection point are located on different sides Figure 2 Schematic diagram of the press test at the middle rigidity test point 1.
[0036] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0037] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.
[0038] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.
[0039] The main solution of the embodiment of the present application is: determining multiple rigid detection points within the area to be detected of the bumper; wherein the rigid detection points are grid intersections obtained after gridding the area to be detected according to a preset grid size; for each rigid detection point, applying a preset pressure to the rigid detection point, and determining the deformation value of the rigid detection point under the preset pressure; based on the deformation values of all rigid detection points, determining the rigid detection result of the area to be detected.
[0040] When designing a vehicle bumper, it is difficult to fully consider all the unfavorable conditions that affect the rigidity. Therefore, the bumper may lack rigidity during the development process. Insufficient bumper rigidity may cause problems such as dents and abnormal noises in the bumper. Therefore, the bumper needs to be tested for rigidity before the product leaves the factory.
[0041] In the related art, the bumper rigidity test is generally carried out by manual testing, that is, the operator presses the area to be tested on the bumper by hand, and then uses a ruler to measure the depression value of the bumper after pressing, and the rigidity of the bumper of the car is measured accordingly. However, the manual pressing test method cannot achieve detailed testing, and the accuracy of the bumper rigidity test results obtained by this method is difficult to guarantee.
[0042] The present application provides a solution, after the area to be inspected of the bumper is grid-divided to obtain multiple rigidity inspection points, a preset pressure is applied to each rigidity inspection point and the deformation value is measured, and then the rigidity inspection result of the bumper is determined based on the deformation values of all rigidity inspection points. The present application adopts a grid-based inspection method to more comprehensively cover the entire area to be inspected of the bumper, provide more uniform and detailed measurement data, and the bumper rigidity inspection result obtained thereby is more systematic and comprehensive, which can improve the accuracy of the bumper rigidity inspection result.
[0043] The following will provide an expanded description and introduction through multiple embodiments.
[0044] The present application embodiment provides a bumper rigidity detection method, referring to Figure 1 , Figure 1 This is a flow chart of Embodiment 1 of the bumper rigidity detection method of the present application.
[0045] In this embodiment, the bumper rigidity detection method may include steps S100 to S300:
[0046] Step S100, determining a plurality of rigidity detection points within a to-be-detected area of the bumper.
[0047] The rigid detection points are grid intersections obtained by dividing the area to be detected into grids according to a preset grid size.
[0048] Step S200 : applying a preset pressure to each rigidity detection point, and determining a deformation value of the rigidity detection point under the preset pressure.
[0049] Step S300: determining the rigidity detection result of the area to be detected based on the deformation values of all rigidity detection points.
[0050] Specifically, in order to more comprehensively obtain the deformation state of the area to be inspected of the automobile bumper, before performing the rigidity test of the bumper, the area to be inspected of the bumper can be gridded according to a preset grid size, and the area to be inspected can be divided into a finite number of small grid units. The grid intersections formed by the grid lines are determined as the rigidity test points of the area to be inspected, so as to perform subsequent rigidity tests on the bumper.
[0051] It should be noted that the size of the preset grid size can be set according to the actual accuracy requirements of the stiffness detection. Generally speaking, the larger the grid size, the lower the corresponding measurement accuracy; the smaller the grid size, the higher the corresponding measurement accuracy; but due to the excessively small grid size, the total amount of rigidity measurement data will increase, affecting the measurement efficiency. Therefore, preferably, the preset grid size can be set to 30mm×30mm. The grid size of 30mm×30mm can usually adapt to the accuracy range of most measuring instruments and detection equipment, which can be more convenient for measurement in actual operation, and can better balance the accuracy and detection efficiency of rigidity detection. Figure 2 This is a schematic diagram of the grid division of the area to be detected for an example car bumper, such as Figure 2 As shown in FIG. 1 , the upper boundary of the area to be detected can be determined by the feature points (such as feature points a, b, c, d, etc.) on the upper contour of the car bumper. Then, the upper boundary is taken as the starting point, and the grid is divided toward the lower contour of the car bumper according to the preset grid size (30 mm × 30 mm). Finally, the following can be obtained: Figure 2 The grid intersection points (such as point 1, point 2, point 3, point 4, point 5, etc.) of the multiple grid cells shown are the determined rigid detection points, and the rigid detection points can be detected separately in the subsequent process.
[0052] After determining multiple rigid detection points in the area to be detected of the bumper, the same preset pressure can be applied to each rigid detection point in turn, and the deformation value of the corresponding rigid detection point under the preset pressure can be determined; the deformation value is the displacement (distance change value) of the rigid detection point in the direction of the preset pressure before and after the preset pressure is applied. In actual operation, a preset pressure can be applied to the rigid measurement point to be detected using a pneumatic device, a force sensor and other equipment, and then a displacement sensor (such as a laser displacement meter, a laser rangefinder and other equipment) is used to measure the deformation value of the rigid detection point under the preset pressure. It should be noted that when measuring the deformation value of all rigid detection points on the car bumper under the preset pressure, it is generally measured from the rigid detection point of the upper contour of the side of the car bumper to the rigid detection point of the lower contour in turn; and according to the different usage scenarios and manufacturing materials of the bumper product, the size of the preset pressure applied to it will also be different. For example, in an example, for a car bumper made of polypropylene material, the usage scenario to be dealt with during the detection is when the user presses, and the size of the corresponding preset pressure is generally 50N.
[0053] However, when measuring the deformation value of the rigid detection point, there is also an external device that applies a preset pressure to the rigid detection point. If the deformation value is measured directly at the rigid detection point, the deformation value measurement accuracy of the rigid detection point will be affected. Therefore, in a feasible implementation, step S200 can specifically include steps S210 to S220, which are used to improve the deformation value measurement accuracy of the rigid detection point, such as Figure 3 As shown, Figure 3 It is a detailed flowchart of step S200.
[0054] Step S210 : applying a preset pressure to each rigidity detection point, and obtaining a first deformation value of the bumper at the first rigidity detection point and a second deformation value of the bumper at the second rigidity detection point.
[0055] Among them, the first rigid detection point and the second rigid detection point are two rigid detection points on the same grid line as the rigid detection point, and the distance from the first rigid detection point to the rigid detection point is not equal to the distance from the second rigid detection point to the rigid detection point; the first deformation value is the distance change value of the first rigid detection point in the direction of preset pressure application when a preset pressure is applied to the rigid detection point; the second deformation value is the distance change value of the second rigid detection point in the direction of preset pressure application when a preset pressure is applied to the rigid detection point.
[0056] Step S220: determining the deformation value of the rigidity detection point based on the first deformation value and the second deformation value.
[0057] It can be understood that the first rigid detection point, the second rigid detection point and the rigid detection point to be detected are on the same grid line, and the distances between the first rigid detection point and the second rigid detection point and the rigid detection point are different; that is, the first rigid detection point and the second rigid detection point can be located on the same side of the rigid detection point, or on both sides of the rigid detection point, and the first rigid detection point and the second rigid detection point are not symmetrical about the rigid detection point. When a preset pressure is applied to the current rigid detection point to cause the current rigid detection point to deform, the first rigid detection point and the second rigid detection point will also produce different deformations. Since there is no external device to apply pressure on the first rigid detection point and the second rigid detection point at this time, the deformation values (i.e., the first deformation value and the second deformation value) generated by the two rigid detection points can be accurately measured by equipment such as a rangefinder. In a feasible implementation, a force measuring device can be used to press a rigid detection point to apply a preset pressure to the rigid detection point, and a rangefinder can be used to obtain a first deformation value and a second deformation value; the force measuring device can accurately measure the magnitude of the force acting on the object, thereby ensuring that the magnitude of the pressure applied to the rigid measurement point to be detected can fully meet the preset pressure magnitude corresponding to the detection requirement; and the rangefinder can accurately measure the first deformation value and the second deformation value, and when using an electronic instrument such as a rangefinder to measure the deformation value, the measurement result can generally be obtained in 2 seconds, which can improve the overall measurement efficiency. Among them, the force measuring device can include a force gauge, and the rangefinder can include an infrared rangefinder, a laser electronic rangefinder, and the like.
[0058] Thus, the deformation value of the rigid detection point can be determined by using the measured first deformation value and the second deformation value, so as to reduce the error that may exist in directly measuring the deformation value of the rigid detection point. In a feasible implementation, before step S220, the first distance value between the first rigid detection point and the rigid detection point and the second distance value between the second rigid detection point and the rigid detection point can also be determined based on the preset grid size, and the first distance value and the second distance value can be used to assist in calculating the deformation value of the rigid detection point; specifically, the deformation value of the rigid detection point can be determined based on formula one, the first deformation value, the second deformation value, the first distance value and the second distance value. Wherein, formula one is: A is the deformation value of the rigid detection point, B1 is the first deformation value, B2 is the second deformation value, X is the first distance value, Y is the second distance value, and C is the intermediate variable.
[0059] For ease of understanding, Figure 2 The following description will be continued by taking the rigid detection point shown in the figure as an example. Figure 4 As shown, Figure 4 is a schematic diagram of pressing detection of the rigidity detection point 1 when the first rigidity detection point and the second rigidity detection point are located on the same side, Figure 4 Point 1 is the rigid detection point to be detected, point 2 is the first rigid detection point selected for calculating the deformation value of the rigid detection point, and point 3 is the second rigid detection point selected; that is, point 2 and point 3 are located on the same side of point 1.
[0060] According to the preset grid size (30mm×30mm) used in the above-mentioned grid division, it can be determined that the first distance value X between the first rigid detection point (point 2) and the rigid detection point (point 1) is 30mm, and the second distance value Y between the second rigid detection point (point 3) and the rigid detection point (point 1) is 60mm. Before applying pressure to point 1 on the structural surface of the bumper (i.e. before pressing), the rigid detection point 1, the first rigid detection point 2 and the second rigid detection point 3 are located on the same grid line; after applying pressure to point 1 (i.e. after pressing), the deformation value generated by the rigid detection point 1 is A (here A is the value to be determined), the corresponding first deformation value generated by point 2 under the above preset pressure is B1, and the second deformation value generated by point 3 under the above preset pressure is B2. It is not difficult to understand that since the transmission of force usually has a decay characteristic, there must be a point (which can be recorded as point 6) on the grid line where points 1, 2, and 3 are located, which is just not affected by the preset pressure applied at point 1. The distance between point 6 and point 1 can be recorded as an intermediate variable C for easy calculation. Taking point 6 as the starting point, there will be a change in the angle α when pressing the front and rear bumper structural surfaces. According to the tangent function of the triangle, it can be determined Since the first deformation value B1 and the second deformation value B2 can be measured by instruments such as a rangefinder, the first distance value X and the second distance value Y can also be determined according to a preset grid size, so the formula can be: Determine the intermediate variable C, and then use the calculated intermediate variable C and the above formula to calculate the deformation value A generated at the rigidity detection point 1 to be detected. In this way, the deformation value corresponding to the current rigidity detection point can be calculated more accurately, so as to obtain a more accurate rigidity detection result of the bumper.
[0061] like Figure 5 As shown, Figure 5 is a schematic diagram of pressing detection of the rigidity detection point 1 when the first rigidity detection point and the second rigidity detection point are located on different sides, Figure 5 Point 1 is the rigid detection point to be detected, point 5 is the first rigid detection point selected for calculating the deformation value of the rigid detection point, and point 3 is the second rigid detection point selected; that is, point 5 and point 3 are located on both sides of point 1 and are asymmetrical.
[0062] The first distance value X between the first rigid detection point (point 5) and the rigid detection point (point 1), and the second distance value Y between the second rigid detection point (point 3) and the rigid detection point (point 1) can be determined according to the preset grid size (30mm×30mm) used in the aforementioned grid division. After applying pressure to point 1 (i.e., after pressing), the deformation value generated by rigid detection point 1 is A, and the corresponding first deformation value generated by point 5 under the above preset pressure is B1, and the second deformation value generated by point 3 under the above preset pressure is B2. Point 5 and point 2 are symmetrical about point 1, so when the first rigid detection point and the second rigid detection point are located on different sides, the same deformation value can be adopted. Figure 4 A similar calculation method is used to determine the deformation value A generated at the rigid detection point 1, which will not be described in detail here.
[0063] After the deformation value corresponding to each rigid detection point in the area to be detected of the bumper is determined through the above steps, the deformation values corresponding to all rigid detection points can be combined to determine the rigid detection result of the area to be detected. For example, it can be calculated whether the average value of the deformation values corresponding to all rigid detection points in the area to be detected exceeds a preset threshold value. If the average value does not exceed the preset threshold value, it can be determined that the rigid detection result of the corresponding area to be detected is normal. Alternatively, if the deformation values of all rigid detection points meet the preset judgment criteria, it can be determined that the rigid detection result of the area to be detected is normal. Among them, the preset judgment standard may be different according to the different areas to be detected, etc.; for example, when the area to be detected is the side area of the front bumper, the preset pressure is 50N, and the deformation values of all rigid detection points do not exceed 10mm, it can be determined that the rigidity detection result of the side area of the front bumper is normal; when the area to be detected is the side area of the rear bumper, the preset pressure is 50N, and the deformation values of all rigid detection points do not exceed 15mm, it can be determined that the rigidity detection result of the side area of the rear bumper is normal; it should be noted that the above-mentioned preset pressure of 50N can be applied by a pressure device with a pressure head (such as a dynamometer, etc.), and the pressure head of the pressure device is generally a circular plane with a diameter of 20mm. If there are rigid detection points that do not meet the preset judgment standard, it can be determined that the rigidity of the current bumper is unqualified, and the operator can further analyze the reasons for the unqualified rigidity and take countermeasures.
[0064] It can be understood that the bumper rigidity detection method provided in the embodiment of the present application can determine multiple rigidity detection points in the area to be detected of the bumper; wherein the rigidity detection point is a grid intersection point obtained after the area to be detected is grid-divided according to a preset grid size; then for each rigidity detection point, a preset pressure is applied to the rigidity detection point, and the deformation value of the rigidity detection point under the preset pressure is determined; thus, the rigidity detection result of the area to be detected can be determined based on the deformation values of all rigidity detection points. Compared with the method in the related art in which the operator presses the area to be detected of the bumper by hand, and then uses a ruler to measure the dent value of the bumper after pressing, and the rigidity of the bumper of the car is measured accordingly, the grid-based detection method used in the present application can more comprehensively cover the entire area to be detected of the bumper, provide more uniform and detailed measurement data, and the bumper rigidity detection result obtained thereby is more systematic and comprehensive, which can improve the accuracy of the bumper rigidity detection result.
[0065] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.
Claims
1. A bumper rigidity detection method, characterized in that: The bumper rigidity detection method comprises: Determine a plurality of rigid detection points within the area to be detected of the bumper; wherein the rigid detection points are grid intersections obtained by dividing the area to be detected into grids according to a preset grid size; For each of the rigidity detection points, applying a preset pressure to the rigidity detection point, and determining a deformation value of the rigidity detection point under the preset pressure; Based on the deformation values of all the rigid detection points, a rigid detection result of the area to be detected is determined.
2. The bumper rigidity detection method according to claim 1, characterized in that: The step of applying a preset pressure to each rigidity detection point and determining a deformation value of the rigidity detection point under the preset pressure comprises: For each of the rigid detection points, a preset pressure is applied to the rigid detection point, and a first deformation value of the bumper at the first rigid detection point and a second deformation value of the bumper at the second rigid detection point are obtained; wherein the first rigid detection point and the second rigid detection point are two rigid detection points on the same grid line as the rigid detection point, and the distance from the first rigid detection point to the rigid detection point is not equal to the distance from the second rigid detection point to the rigid detection point; the first deformation value is a distance change value of the first rigid detection point in a direction of applying the preset pressure when a preset pressure is applied to the rigid detection point; the second deformation value is a distance change value of the second rigid detection point in a direction of applying the preset pressure when a preset pressure is applied to the rigid detection point; Based on the first deformation value and the second deformation value, a deformation value of the rigidity detection point is determined.
3. The bumper rigidity detection method according to claim 2, characterized in that: Before the step of determining the deformation value of the rigid detection point based on the first deformation value and the second deformation value, the method further includes: Based on the preset grid size, determining a first distance value between the first rigid detection point and the rigid detection point and a second distance value between the second rigid detection point and the rigid detection point; The step of determining the deformation value of the rigid detection point based on the first deformation value and the second deformation value comprises: Determine the deformation value of the rigid detection point based on formula 1, the first deformation value, the second deformation value, the first distance value, and the second distance value; The formula 1 is: Wherein, A is the deformation value of the rigid detection point, B1 is the first deformation value, B2 is the second deformation value, X is the first distance value, Y is the second distance value, and C is an intermediate variable.
4. The bumper rigidity detection method according to claim 2, characterized in that: The step of applying a preset pressure to the rigidity detection point and obtaining a first deformation value of the bumper at the first rigidity detection point and a second deformation value at the second rigidity detection point comprises: The rigid detection point is pressed by a force measuring device to apply a preset pressure to the rigid detection point, and the first deformation value and the second deformation value are acquired by a distance meter.
5. The bumper rigidity detection method according to claim 4, characterized in that: The force measuring device comprises a force gauge.
6. The bumper rigidity detection method according to claim 4, characterized in that: The rangefinder comprises an infrared rangefinder.
7. The bumper rigidity detection method according to claim 1, characterized in that: The step of determining the rigidity detection result of the area to be detected based on the deformation values of all the rigidity detection points comprises: When the deformation values of all the rigidity detection points meet the preset judgment standard, it is determined that the rigidity detection result of the area to be detected is normal.
8. The bumper rigidity detection method according to claim 7, characterized in that: When the deformation values of all the rigid detection points meet the preset judgment standard, the step of determining that the rigid detection result of the to-be-detected area is normal includes: When the area to be tested is the side area of the front bumper, the preset pressure is 50N and the deformation values of all the rigidity test points do not exceed 10mm, the rigidity test result of the side area of the front bumper is determined to be normal; the preset pressure is applied by a pressure device with a pressure head, and the pressure head is a circular plane with a diameter of 20mm.
9. The bumper rigidity detection method according to claim 7, characterized in that: When the deformation values of all the rigid detection points meet the preset judgment standard, the step of determining that the rigid detection result of the to-be-detected area is normal also includes: When the area to be tested is the side area of the rear bumper, the preset pressure is 50N and the deformation values of all the rigidity test points do not exceed 15mm, it is determined that the rigidity test result of the side area of the rear bumper is normal; the preset pressure is applied by a pressure device with a pressure head, and the pressure head is a circular plane with a diameter of 20mm.
10. The bumper rigidity detection method according to any one of claims 1 to 9, characterized in that: The preset grid size is 30 mm×30 mm.