Method and device for detecting protection effect and detection system

Abstract

The invention relates to the technical field of protection effect detection, and discloses a method for detecting a protection effect, and the method comprises the steps: obtaining impact results corresponding to the impact of a plurality of impact assemblies with different weights on a protection material, and the impact speeds of the impact assemblies on the protection material are the same when the impact assemblies impact the protection material; and determining the protection effect of the protection material according to each impact result. Under the condition of the same impact speed, when impact assemblies with different weights impact a protective material, the impact kinetic energy borne by the protective material is different, and the impact results are also different. The multiple impact assemblies with different weights are used for impacting the protection material, the impact results of the multiple impact assemblies with different weights are obtained, and then the different impact results are used for determining the protection effect of the protection material. The invention further discloses a device for detecting the protection effect and a detection system.

Description

Technical Field

[0001] The present application relates to the technical field of protection effect detection, for example, to a method and device for detecting protection effect, and a detection system. Background Art

[0002] During the transportation of products, the product shell is easily bumped and damaged. Generally, a layer of protective material is placed on the outside of the product to increase protection for the product shell, thereby reducing the bumps and scratches on the product shell during transportation. Due to the different specifications or materials of protective materials, there are differences in the effect of preventing the product shell from being bumped when protecting the product shell. Therefore, in order to understand whether the protective material can effectively protect the product shell, a solution is urgently needed to determine the protective effect of the protective material.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0005] The embodiments of the present disclosure provide a method and device for detecting protective effects, and a detection system, so as to determine the protective effects of protective materials.

[0006] In some embodiments, the method is applied to a detection system, which is used to detect impact results corresponding to the impact of an impact component on a protective material; the method includes: obtaining impact results corresponding to the impact of multiple impact components of different weights on the protective material, and the impact speed of each impact component when impacting the protective material is the same; determining the protective effect of the protective material based on each impact result; wherein the protective effect represents the impact kinetic energy that can be withstood when impacted.

[0007] In some embodiments, the device includes: a processor and a memory storing program instructions, and the processor is configured to execute the method for detecting protective effects when running the program instructions.

[0008] In some embodiments, the detection system includes: an impact testing machine for using an impact component to impact the protective material; a detection device for detecting the impact result corresponding to the impact of the impact component on the protective material; and the device for detecting the protective effect.

[0009] The method, device, and detection system for detecting protection effects provided by the embodiments of the present disclosure can achieve the following technical effects:

[0010] Since the impact kinetic energy of the protective material is different when impact components of different weights impact the protective material at the same impact speed, the impact results will also be different. Multiple impact components of different weights are used to impact the protective material, and the impact results of the multiple impact components of different weights are obtained, and then the protective effect of the protective material is determined using different impact results.

[0011] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0013] Figure 1 is a schematic diagram of a method for detecting a protective effect provided by an embodiment of the present disclosure;

[0014] Figure 2 is a schematic diagram of another method for detecting a protective effect provided by an embodiment of the present disclosure;

[0015] Figure 3 is a schematic diagram of another method for detecting a protective effect provided by an embodiment of the present disclosure;

[0016] Figure 4 is a schematic diagram of another method for detecting a protective effect provided by an embodiment of the present disclosure;

[0017] Figure 5 is a schematic diagram of a device for detecting a protective effect provided by an embodiment of the present disclosure;

[0018] Figure 6 is a structural schematic diagram of a stamping test machine provided by an embodiment of the present disclosure;

[0019] Figure 7 It is a schematic diagram of the connection relationship of the detection equipment;

[0020] Figure 8 This is another schematic diagram of the connection relationship of the detection equipment. DETAILED DESCRIPTION

[0021] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0022] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0023] Unless otherwise stated, the term "plurality" means two or more.

[0024] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0025] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0026] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0027] After people buy products in shopping malls or online, when transporting them to their homes, they are often easily bumped and cause bumps on the outside of the products. For example, during the transportation of refrigerators, if there are bumps on the outside of the refrigerator shell, people are more likely to choose to return or exchange the products, which will increase the cost of the merchants. Therefore, before transporting the products, merchants generally abut a layer of protective material on the outside of the products to protect the products. When the product is bumped, most of the impact kinetic energy of the bump is absorbed by the protective material, so that the impact kinetic energy of the bump reaching the surface of the product is small, thereby reducing the bumps on the product during transportation. Therefore, in order for the protective material to effectively protect the product to be protected, it is necessary to understand the impact kinetic energy that the protective material can withstand, that is, it is necessary to understand the protective effect of the protective material. Due to different bumps, the impact kinetic energy generated on the protective material is different. When the product is subjected to an impact kinetic energy less than the protective material can withstand, it can prevent the product to be protected from having bumps. When the product is subjected to an impact kinetic energy exceeding the protective material can withstand, the product to be protected will have bumps. Therefore, a plurality of impact components of different weights are used to impact the protective material, and the impact results of the plurality of impact components of different weights are obtained, and then the protective effect of the protective material is determined using the different impact results.

[0028] Combination Figure 1 As shown, an embodiment of the present disclosure provides a method for detecting a protective effect, which is applied to a detection system, and the detection system is used to detect an impact result corresponding to an impact component impacting a protective material; the method includes:

[0029] S101, a detection system obtains impact results corresponding to impacts of multiple impact components of different weights on a protective material, and the impact speeds of the impact components when impacting the protective material are the same.

[0030] S102, the detection system determines the protective effect of the protective material according to each impact result; wherein the protective effect represents the impact kinetic energy that can be sustained when impacted.

[0031] Using the method for detecting the protective effect provided by the embodiment of the present disclosure, since when impact components of different weights impact the protective material under the same impact speed, the impact kinetic energy received by the protective material is different, the impact results will also be different. Use multiple impact components of different weights to impact the protective material, obtain the impact results of multiple impact components of different weights, and then use the different impact results to determine the protective effect of the protective material. In some embodiments, the maximum impact kinetic energy that can be borne by the protective material can be characterized by the product to be protected not producing bump marks when it is impacted. If the impact kinetic energy exceeds the amount that the protective material can withstand, the product protected by the protective material will produce bump marks.

[0032] Further, determining the protective effect of the protective material according to each impact result includes: determining the impact kinetic energy range of the protective material according to each impact result. Determining the protective effect of the protective material according to the impact kinetic energy range. Among them, the impact kinetic energy range of the protective material is the impact kinetic energy range that the protective material can withstand. In this way, the impact kinetic energy range that the protective material can withstand is determined according to the impact result, so that the impact kinetic energy that the protective material can withstand when it is impacted can be calculated. In this way, the impact kinetic energy that the protective material can withstand when it is impacted can be determined, and then the protective effect of the protective material can be determined.

[0033] Combination Figure 2 As shown, the embodiment of the present disclosure provides another method for detecting a protective effect, which is applied to a detection system and includes:

[0034] S201, the detection system obtains the impact results corresponding to the impact of multiple impact components of different weights on the protective material, and the impact speed of each impact component when impacting the protective material is the same.

[0035] S202, the detection system determines the impact kinetic energy range of the protective material according to each impact result.

[0036] S203, the detection system determines the protective effect of the protective material according to the impact kinetic energy range.

[0037] According to the method for detecting the protective effect provided by the embodiment of the present disclosure, when the impact assemblies of different weights impact the protective material at the same impact speed, the impact kinetic energy received by the protective material is different, and the impact results will also be different. By using multiple impact assemblies of different weights to impact the protective material, the impact results of the multiple impact assemblies of different weights are obtained, thereby determining the impact kinetic energy range of the protective material, and then using the impact kinetic energy range to determine the protective effect of the protective material.

[0038] Optionally, the impact result includes a response acceleration, and the response acceleration characterizes the maximum acceleration of the impact component during the impact process. Determining the impact kinetic energy range of the protective material according to each impact result includes: taking the weight of each impact component as the horizontal coordinate and taking the response acceleration corresponding to each impact component as the vertical coordinate to draw a line graph. Calculate the slope of the line segment between two adjacent coordinate points in the line graph. Determine the impact kinetic energy range of the protective material according to the slope of each line segment. Since a=F / m, where a is the acceleration, F is the resultant force on the product, and m is the weight of the product. Then, during the impact process, the greater the weight of the impact component, the greater the response acceleration of the impact component. At the same time, when the impact kinetic energy received by the protective material does not exceed the impact kinetic energy it can withstand, the protective material can prevent the surface of the product to be protected from producing bump marks. At this time, the response acceleration is less affected by the weight of the impact component, that is, as the weight of the impact component increases, the response acceleration increases more slowly. When the impact kinetic energy received by the protective material is within the impact kinetic energy range it can withstand, the surface of the product to be protected will not produce bump marks. At this time, as the weight of the impact component increases, the trend of the response acceleration increase remains within a certain range. Among them, this range is the range of change in the response acceleration corresponding to the impact component when the protective material can prevent the product to be protected from producing bump marks. When the impact kinetic energy received by the protective material exceeds the impact kinetic energy it can withstand, bump marks will be produced on the surface of the product to be protected. At this time, the greater the impact acceleration is affected by the weight of the impact component, that is, as the weight of the impact component increases, the response acceleration increases faster. Therefore, according to the slope of the line segment between two adjacent coordinate points in the line graph, the minimum weight of the impact component that the protective material can withstand and the maximum weight of the impact component can be determined. According to the minimum weight of the impact component that the protective material can withstand and the maximum weight of the impact component, the range of the maximum impact kinetic energy that the protective material can withstand can be determined. Thereby, the protective effect of the protective material can be determined.

[0039] Combination Figure 3 As shown, the embodiment of the present disclosure provides another method for detecting a protective effect, which is applied to a detection system and includes:

[0040] S301, the detection system obtains the response acceleration of the impact components corresponding to the impact of multiple impact components of different weights on the protective material, and the impact speed of each impact component when impacting the protective material is the same. The response acceleration represents the maximum acceleration of the impact component during the impact process.

[0041] S302, the detection system draws a line graph using the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate.

[0042] S303, the detection system calculates the slope of the line segment between two adjacent coordinate points in the line graph.

[0043] S304: The detection system determines the impact kinetic energy range of the protective material according to the slope of each line segment.

[0044] S305, the detection system determines the protective effect of the protective material according to the impact kinetic energy range.

[0045] Using the method for detecting the protective effect provided by the embodiment of the present disclosure, a plurality of impact components of different weights are used to impact the protective material, and the response accelerations of the impact components of different weights are obtained. The response acceleration characterizes the maximum acceleration of the impact component during the impact process, that is, the response acceleration is the maximum acceleration of the impact component during the process in which the impact component impacts the protective material and the speed drops to 0. A line graph is drawn with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate. According to the slope of the line segment between two adjacent coordinate points in the line graph, the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand can be determined. According to the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand, the range of the maximum impact kinetic energy that the protective material can withstand can be determined. Thereby, the protective effect of the protective material can be determined.

[0046] Optionally, an acceleration sensor is provided on the impact component, and the response acceleration is obtained in the following manner: the acceleration sensor is used to detect the maximum acceleration of the impact component during the impact process to obtain the response acceleration.

[0047] Optionally, when an impact component of the same weight impacts the protective material, it impacts N times. The response acceleration is obtained in the following manner: using an acceleration sensor to detect the N maximum accelerations of each impact component during the impact process. The N maximum accelerations are used to calculate the average value to obtain the response acceleration. In this way, by calculating the average value of the maximum accelerations obtained from multiple impacts, the experimental error can be reduced. This makes the obtained response acceleration more accurate, and a more accurate slope can be determined, thereby obtaining a more accurate impact kinetic energy range. In turn, the protective effect of the protective material can be more accurately determined.

[0048] In some embodiments, the protective material is a protective plate made of EPS foam material with a density of 25 kg / m 3 , whose thickness is 2cm. The protective material is impacted by impact components of different weights to obtain the response acceleration. When the impact component of the same weight impacts the protective material, it is impacted 3 times. As shown in Table 1, when the weight of the impact component is 5kg, the corresponding response acceleration is 4.03m / s 2 When the weight of the impact component is 7kg, the corresponding response acceleration is 3.79m / s 2When the weight of the impact component is 9kg, the corresponding response acceleration is 3.97m / s 2 When the weight of the impact component is 11kg, the corresponding response acceleration is 6.32m / s 2 When the weight of the impact component is 13kg, the corresponding response acceleration is 33.12m / s 2 When the weight of the impact component is 15kg, the corresponding response acceleration is 36.00m / s 2 When the weight of the impact component is 17kg, the corresponding response acceleration is 36.15m / s 2 When the weight of the impact component is 19kg, the corresponding response acceleration is 36.32m / s 2 .

[0049] Table 1

[0050]

[0051] In other embodiments, the protective material is a protective plate made of EPS foam material with a density of 20 kg / m 3 , whose thickness is 2cm. The protective material is impacted by impact components of different weights to obtain the response acceleration. When the impact component of the same weight impacts the protective material, it is impacted 3 times. As shown in Table 2, when the weight of the impact component is 2kg, the corresponding response acceleration is 4.15m / s 2 When the weight of the impact component is 3kg, the corresponding response acceleration is 4.03m / s 2 When the weight of the impact component is 5kg, the corresponding response acceleration is 4.61m / s 2 When the weight of the impact component is 7kg, the corresponding response acceleration is 4.88m / s 2 When the weight of the impact component is 9kg, the corresponding response acceleration is 6.86m / s 2 When the weight of the impact component is 11kg, the corresponding response acceleration is 31.70m / s 2 When the weight of the impact component is 13kg, the corresponding response acceleration is 34.31m / s 2 When the weight of the impact component is 15kg, the corresponding response acceleration is 34.49m / s 2 .

[0052] Table 2

[0053]

[0054] Furthermore, a line graph is drawn with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate, including: establishing a two-dimensional rectangular coordinate system with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate. In the two-dimensional rectangular coordinate system, a coordinate point corresponding to the weight and response acceleration of the impact component is determined. Each coordinate point is connected in order from small to large according to the horizontal coordinate value to obtain a line graph.

[0055] Furthermore, the impact kinetic energy range of the protective material is determined according to the slope of each line segment, including: determining the slope of each line segment that is greater than or equal to the first set value as the first target slope. According to the first target slope, the target minimum weight and the target maximum weight are determined. According to the target minimum weight and the target maximum weight, the impact kinetic energy range of the protective material is determined. Since the weight of each impact component corresponding to the first target slope collides with the protective material, the impact kinetic energy of each impact component is the impact kinetic energy that the protective material can withstand. Therefore, according to the first target slope, the weight of the impact component that the protective material can withstand can be accurately determined, so that the target minimum weight and the target maximum weight can be more accurately determined. Furthermore, according to the target minimum weight and the target maximum weight, the impact kinetic energy range of the protective material can be determined.

[0056] Further, according to the first target slope, the target minimum weight and the target maximum weight are determined, including: sorting the endpoints of the line segment corresponding to the first target slope in ascending order of the horizontal coordinate value, determining the first horizontal coordinate value in the sorting as the target minimum weight, and determining the last horizontal coordinate value in the sorting as the target maximum weight.

[0057] In some embodiments, the protective material is a protective plate, a protective box, etc. made of EPS foam material. For example, the impacted protective material is a protective plate made of EPS foam material, and its density is 20 kg / m 3 , its thickness is 2cm. The first set value is 1.732. The slopes of the line segments between two adjacent coordinate points in the line graph are calculated in sequence: -0.12, 0.09, 1.175, 13.4, 1.44, 0.075, 0.085. The first target slope is 13.4. Therefore, the target minimum weight is 11kg and the target maximum weight is 13kg.

[0058] Optionally, the impact kinetic energy range of the protective material is determined according to each impact result, including: drawing a curve graph with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate. Calculate the slope of the tangent at each point of the curve in the curve graph. Determine the impact kinetic energy range of the protective material according to the slope of each tangent. In this way, the slope of the tangent at each point of the curve can more accurately reflect the change of the response acceleration with the change of the weight of the impact component. Therefore, according to the slope of each tangent, the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand can be more accurately determined. Thereby, the accuracy of the impact kinetic energy range of the protective material can be improved. And then the protective effect of the protective material can be more accurately determined.

[0059] Furthermore, a curve graph is drawn with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate, including: establishing a two-dimensional rectangular coordinate system with the weight of each impact component as the horizontal coordinate and the response acceleration corresponding to each impact component as the vertical coordinate. In the two-dimensional rectangular coordinate system, the coordinate points corresponding to the weight and response acceleration of the impact component are determined. Using all the coordinate points and the curve fitting method, a fitting curve is drawn to obtain a curve graph.

[0060] Furthermore, the impact kinetic energy range of the protective material is determined based on the slope of each tangent. The slope of each tangent that is greater than or equal to the first set value is determined as the second target slope. Based on the second target slope, the target minimum weight and the target maximum weight are determined. Based on the target minimum weight and the target maximum weight, the impact kinetic energy range of the protective material is determined. In this way, based on the second target slope, the weight of the impact component that the protective material can withstand can be accurately determined, so that the target minimum weight and the target maximum weight can be more accurately determined. Furthermore, based on the target minimum weight and the target maximum weight, the impact kinetic energy range of the protective material can be determined.

[0061] Further, according to the second target slope, the target minimum weight and the target maximum weight are determined, including: sorting the coordinate points corresponding to the second target slope in ascending order of the horizontal coordinate value. The first horizontal coordinate value in the sorting is determined as the target minimum weight, and the last horizontal coordinate value in the sorting is determined as the target maximum weight.

[0062] Optionally, the impact result includes an imprint image, which is an image generated by the impact component impacting the protective material. Determining the impact kinetic energy range of the protective material according to each impact result includes: identifying each imprint image and obtaining the recognition result corresponding to each imprint image. According to each recognition result, determining the target minimum weight and the target maximum weight. According to the target minimum weight and the target maximum weight, determining the impact kinetic energy range of the protective material. Since the imprint images generated after the impact components of different weights impact the protective material are different. The greater the weight of the impact component, the greater the impact damage to the product to be protected. Therefore, after the imprint image is recognized, the recognition result is obtained. According to the recognition result, it can be understood whether the product to be protected will be bumped during the impact process, so as to determine the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand. According to the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand, it can be determined that when the protective material is impacted and the surface of the product to be protected is prevented from generating bump marks, the range of the maximum impact kinetic energy that the protective material can withstand can be determined. Thus, the protective effect of the protective material can be determined.

[0063] Combination Figure 4 As shown, the embodiment of the present disclosure provides another method for detecting a protective effect, which is applied to a detection system and includes:

[0064] S401, the detection system obtains the imprint image corresponding to the impact of multiple impact components of different weights on the protective material, and the impact speed of each impact component when impacting the protective material is the same. The imprint image is the image generated by the impact component impacting the protective material.

[0065] S402, the detection system identifies each imprint image and obtains the identification result corresponding to each imprint image, wherein the identification result is the area of ​​the impact mark in the imprint image.

[0066] S403, the detection system determines the target minimum weight and the target maximum weight according to each recognition result.

[0067] S404, the detection system determines the impact kinetic energy range of the protective material according to the target minimum weight and the target maximum weight.

[0068] S405, the detection system determines the protective effect of the protective material according to the impact kinetic energy range.

[0069] The method for detecting the protective effect provided by the embodiment of the present disclosure is adopted, and the imprint image generated when impact components of different weights impact the protective material is obtained. After the imprint image is recognized, a recognition result is obtained. After the imprint image is recognized, a recognition result is obtained so that the area of ​​the impact mark in the imprint image can be calculated. According to the recognition result, it can be understood whether the product to be protected will be bumped during the impact process, so as to determine the minimum weight of the impact component and the maximum weight of the impact component that the protective material can withstand. According to the minimum weight of the impact component that the protective material can withstand and the maximum weight of the impact component, the range of the maximum impact kinetic energy that the protective material can withstand can be determined. Thus, the protective effect of the protective material can be determined.

[0070] Furthermore, the detection system identifies each imprint image and obtains the identification result corresponding to each imprint image, including: identifying the number of pixels in the imprint image whose grayscale value is within the preset color grayscale value range. The number is determined as the area of ​​the impact mark of the impact component impacting the protective material. For example, the preset color grayscale value range is 150-200, and the number of pixels in the image whose grayscale value is 150-200 is identified as 100, then the area of ​​the impact mark is 100.

[0071] Optionally, the detection system includes a base, the base is used to place the protective material, and carbon paper is placed between the protective material and the base, and the carbon paper is used to produce an imprint when the protective material is hit. The detection system also includes a camera, the camera is used to capture an image of the imprint produced on the carbon paper, and the imprint image is obtained in the following manner: using the camera to capture the image of the imprint produced on the carbon paper.

[0072] Optionally, the impact end of the impact component is provided with a pigment, and the camera is used to capture the imprint image generated on the protective material. The imprint image is obtained in the following manner: the camera is used to capture the imprint image generated on the protective material.

[0073] Further, according to each recognition result, the target minimum weight and the target maximum weight are determined, including: when the recognition result is that there are pixels in the imprint image whose color grayscale value is greater than the second set value, and the number of the pixels is the third set value, the weight of the impact component corresponding to the imprint image is determined as the target minimum weight. When the recognition result is that there are pixels in the imprint image whose color grayscale value is greater than the second set value, and the number of the pixels is the fourth set value, the weight of the impact component corresponding to the imprint image is determined as the target maximum weight. Wherein, the fourth set value is greater than the third set value.

[0074] In some embodiments, the cross-sectional area of ​​the impact end of the impact assembly is 100 cm 2, and the corresponding pixel points are 78400. The protective material is impacted by impact components of different weights to obtain the imprint image corresponding to each impact component. Among them, the protective material is a protective plate made of EPS foam material with a density of 25kg / m 3 , and its thickness is 2cm. Each imprint image is identified to obtain the identification result corresponding to each imprint image. For example, the second setting value is 200, the third setting value is 19600, and the fourth setting value is 26133. When the imprint image recognition result is that there are pixels with a color grayscale value greater than 200 in the imprint image, and the number of the pixels is 19400, the weight of the impact component corresponding to the imprint image, 11kg, is determined as the target minimum weight. When the imprint image recognition result is that there are pixels with a color grayscale value greater than 200 in the imprint image, and the number of the pixels is 26133, the weight of the impact component corresponding to the imprint image, 13kg, is determined as the target maximum weight. For another example, the second setting value is 150, the third setting value is 31360, and the fourth setting value is 39200. When the imprint image recognition result is that there are pixels with a grayscale value greater than 150 in the imprint image, and the number of such pixels is 31360, the weight of the impact component corresponding to the imprint image, 11 kg, is determined as the target minimum weight. When the imprint image recognition result is that there are pixels with a grayscale value greater than 150 in the imprint image, and the number of such pixels is 39200, the weight of the impact component corresponding to the imprint image, 13 kg, is determined as the target maximum weight.

[0075] Furthermore, according to the minimum weight of the impact component and the maximum weight of the impact component, the impact kinetic energy range of the protective material is determined, including: obtaining the impact velocity. The impact velocity is the initial velocity when the impact component impacts the protective material. According to the impact velocity and the target minimum weight, the minimum value of the impact kinetic energy range is obtained. According to the impact velocity and the target maximum weight, the maximum value of the impact kinetic energy range is obtained. In this way, the impact kinetic energy range that the protective material bears can be calculated, so that the protective effect of the protective material can be determined.

[0076] Optionally, a velocity sensor is provided on the impact assembly, and obtaining the impact velocity includes: detecting the impact velocity using the velocity sensor.

[0077] Optionally, the distances between the impact components of different weights and the protective material are all set to a set height, and the densities of the impact components of different weights are the same. Obtaining the impact velocity includes: using Calculate and obtain the impact velocity. Where v is the impact velocity, g is the gravitational acceleration, and h is the set height. In this way, when the set height is constant, the impact velocities of impact components of different weights when impacting the protective material are the same, so that the weight of the impact component that the protective material can withstand is comparable. This makes the calculated impact kinetic energy that the protective material can withstand more accurate, and thus the protective effect of the protective material can be determined more accurately.

[0078] Further, according to the impact speed and the minimum target weight, the minimum value of the impact kinetic energy range is obtained, including: using Calculate and obtain the minimum value of the impact kinetic energy range, where m1 is the target minimum weight.

[0079] Further, according to the impact speed and the maximum weight of the target, the maximum value of the impact kinetic energy range is obtained, including: using Calculate and obtain the maximum value of the impact kinetic energy range, where m2 is the target maximum weight.

[0080] Optionally, determining the protective effect of the protective material according to the impact kinetic energy range includes: determining the impact kinetic energy range as the protective effect of the protective material. Since the impact kinetic energy range can reflect the impact kinetic energy that the protective material can withstand, the impact kinetic energy range is determined as the protective effect of the protective material.

[0081] Optionally, determining the protective effect of the protective material according to the impact kinetic energy range includes: using the impact kinetic energy range, performing a table lookup operation in a preset data table to find out the alternative protective effect corresponding to the impact kinetic energy range. The alternative protective effect is determined as the protective effect of the protective material. The preset data table stores the corresponding relationship between the impact kinetic energy range and the alternative protective effect. In this way, the impact kinetic energy range and the protective effect of the protective material can correspond to each other, so that the protective effect of the protective material can be determined when the impact kinetic energy range is obtained. For example, the impact kinetic energy range is greater than 0J and less than any value within 3J, and the alternative protective effect of the impact kinetic energy range is found to be level one from the preset data table, then the protective effect of the protective material is level one. For another example, the impact kinetic energy range is greater than or equal to 3J and less than any value within 7J, and the alternative protective effect corresponding to the impact kinetic energy range is found to be level two from the preset data table, then the protective effect of the protective material is level two. For another example, the impact kinetic energy range is greater than or equal to 7J and less than any value within 12J. The alternative protection effect corresponding to the impact kinetic energy range is found to be level three from the preset data table, and the protection effect of the protective material is level three.

[0082] In some embodiments, the protective material is a protective plate made of EPS foam material with a density of 20 kg / m 3, with a thickness of 2 cm. Set the height to 0.05 m. Use impact components of different weights to impact the protective material, and obtain the target minimum weight m1 of 11 kg and the target maximum weight m2 of 13 kg. Then use Calculate and obtain the impact velocity of 1m / s 2 . use The minimum value of the impact kinetic energy range obtained by calculation is 5.5J. The maximum value of the impact kinetic energy range obtained by calculation is 6.5 J. Then, the alternative protection effect corresponding to the impact kinetic energy range is found to be level 2 from the preset data table. Therefore, the protection effect of the protective material is level 2.

[0083] Combination Figure 5 As shown, an embodiment of the present disclosure provides a device 1 for detecting a protective effect, including a processor 11 and a memory 12. Optionally, the device may also include a communication interface 13 and a bus 14. The processor 11, the communication interface 13, and the memory 12 may communicate with each other through the bus 14. The communication interface 13 may be used for information transmission. The processor 11 may call the logic instructions in the memory 12 to execute the method for detecting a protective effect of the above embodiment.

[0084] In addition, the logic instructions in the memory 12 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0085] The memory 12 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 11 executes the function application and data processing by running the program instructions / modules stored in the memory 12, that is, the method for detecting the protective effect in the above embodiment is implemented.

[0086] The memory 12 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 12 may include a high-speed random access memory and may also include a non-volatile memory.

[0087] The embodiment of the present disclosure provides a detection system including: an impact testing machine, a detection device and the above-mentioned device 1 for detecting the protective effect. The impact testing machine is used to use an impact component to impact the protective material. The detection device is used to detect the impact result corresponding to the impact of the impact component on the protective material.

[0088] In some embodiments, in combination Figure 6 As shown, the impact testing machine 2 includes a base 22 and an impact component 21. A protective material 6 is placed on the base 22, and the impact component 21 is used to impact the protective material 6. A carbon paper 7 is placed between the protective material 6 and the base 22, and the carbon paper 7 is used to produce an imprint when the protective material 6 is impacted. A detection device is provided on the impact component 21, and the detection device is electrically connected to the device 1 for detecting the protective effect. The detection device includes a speed sensor 3, and the speed sensor 3 is used to detect the initial speed when the impact component 21 impacts the protective material 6. The detection device also includes an acceleration sensor 4 or a camera, and the acceleration sensor 4 is used to detect the response acceleration of the impact component 21 during the impact process, and the camera is used to capture the imprint image produced on the copy paper 7 when the impact component 21 impacts the protective material 6.

[0089] For example, Figure 7 As shown, the detection device includes a velocity sensor 3 and an acceleration sensor 4, and the velocity sensor 3 and the acceleration sensor 4 are both electrically connected to the device 1 for detecting the protective effect. During the test, the protective material is impacted by impact components 21 of different weights, and the heights of the impact components 21 of different weights before the impact are all set heights. The velocity sensor detects the impact speed when the impact component 21 impacts the protective material, and uploads the impact speed to the device 1 for detecting the protective effect. The acceleration sensor 4 is used to detect the response acceleration of the impact component 21 during the impact, and the response acceleration is uploaded to the device 1 for detecting the protective effect. The device 1 for detecting the protective effect uses the weight of each impact component 21 as the horizontal coordinate, and the response acceleration corresponding to each impact component 21 as the vertical coordinate to draw a line graph, and then calculates the slope of the line segment between two adjacent coordinate points in the line graph. The device 1 for detecting the protective effect determines the slope of each line segment that is greater than or equal to the first set value as the first target slope. The device 1 for detecting the protective effect determines the target minimum weight and the target maximum weight according to the first target slope. The device 1 for detecting the protection effect obtains the minimum value of the impact kinetic energy range according to the impact speed and the minimum target weight. The device 1 for detecting the protection effect obtains the maximum value of the impact kinetic energy range according to the impact speed and the maximum target weight.

[0090] For example, Figure 8As shown, the detection device includes a speed sensor 3 and a camera 5, and the speed sensor 3 and the camera 5 are both electrically connected to the device 1 for detecting the protective effect. During the test, the impact components 21 of different weights are used to impact the protective material, and the heights of the impact components 21 of different weights before the impact are all set heights. The speed sensor detects the impact speed when the impact component 21 impacts the protective material, and uploads the impact speed to the device 1 for detecting the protective effect. The camera is used to shoot the imprint image generated on the carbon paper when the impact component 21 impacts the protective material, and the imprint image is uploaded to the device 1 for detecting the protective effect for identification, and the identification results corresponding to each imprint image are obtained. When the identification result of the device 1 for detecting the protective effect is that there are pixels in the imprint image whose color grayscale value is greater than the second set value, and the number of the pixels is the third set value, the weight of the impact component 21 corresponding to the imprint image is determined as the target minimum weight. The device 1 for detecting the protective effect obtains the minimum value of the impact kinetic energy range according to the impact speed and the target minimum weight. When the recognition result is that there are pixels whose color grayscale value is greater than the second set value in the imprint image, and the number of the pixels is the fourth set value, the device 1 for detecting the protective effect determines the weight of the impact component 21 corresponding to the imprint image as the target maximum weight. The device 1 for detecting the protective effect obtains the maximum value of the impact kinetic energy range according to the impact speed and the target maximum weight. The device 1 for detecting the protective effect determines the impact kinetic energy range as the protective effect of the protective material.

[0091] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0092] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0093] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0094] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A method for detecting a protective effect, characterized in that: Applied to a detection system, the detection system is used to detect the impact result corresponding to the impact of the impact component on the protective material; the method includes: Obtaining impact results corresponding to impacts of multiple impact components of different weights on the protective material, wherein the impact speeds of the impact components when impacting the protective material are the same; The protective effect of the protective material is determined according to each impact result; wherein the protective effect represents the impact kinetic energy that can be sustained when impacted.

2. The method according to claim 1, characterized in that The protective effect of the protective material is determined based on each impact result, including: Determine the impact kinetic energy range of the protective material according to each impact result; The protective effect of the protective material is determined according to the impact kinetic energy range.

3. The method according to claim 2, characterized in that The impact results include response acceleration, which characterizes the maximum acceleration of the impact component during the impact; The impact kinetic energy range of the protective material is determined based on each impact result, including: A line graph is drawn with the weight of each impact component as the abscissa and the response acceleration corresponding to each impact component as the ordinate; Calculate the slope of the line segment between two adjacent coordinate points in a line graph; The impact kinetic energy range of the protective material is determined based on the slope of each line segment.

4. The method according to claim 3, characterized in that The impact kinetic energy range of the protective material is determined according to the slope of each line segment, including: Determine the slope of each line segment that is greater than or equal to the first set value as the first target slope; determining a target minimum weight and a target maximum weight according to the first target slope; Determine the impact kinetic energy range of the protective material based on the target minimum weight and the target maximum weight.

5. The method according to claim 4, characterized in that According to the first target slope, a target minimum weight and a target maximum weight are determined, including: Sort the endpoints of the line segment corresponding to the first target slope in ascending order of horizontal coordinate values; The first horizontal coordinate value in the sorting is determined as the target minimum weight, and the last horizontal coordinate value in the sorting is determined as the target maximum weight.

6. The method according to claim 2, characterized in that The impact result includes an imprint image, which is an image generated by the impact component impacting the protective material; the impact kinetic energy range of the protective material is determined according to each impact result, including: Recognize each imprint image to obtain a recognition result corresponding to each imprint image; According to each recognition result, determine the target minimum weight and the target maximum weight; Determine the impact kinetic energy range of the protective material based on the target minimum weight and the target maximum weight.

7. The method according to claim 6, characterized in that According to each recognition result, the target minimum weight and target maximum weight are determined, including: When the recognition result is that there are pixels whose color grayscale value is greater than the second set value in the imprint image, and the number of the pixels is the third set value, the weight of the impact component corresponding to the imprint image is determined as the target minimum weight; When the recognition result is that there are pixels in the imprint image whose color grayscale value is greater than the second set value, and the number of the pixels is the fourth set value, the weight of the impact component corresponding to the imprint image is determined as the target maximum weight; wherein the fourth set value is greater than the third set value.

8. The method according to any one of claims 4 to 7, characterized in that: According to the minimum weight of the impact component and the maximum weight of the impact component, determine the impact kinetic energy range of the protective material, including: Obtaining the impact velocity; wherein the impact velocity is the initial velocity when the impact component impacts the protective material; The minimum value of the impact kinetic energy range is obtained according to the impact speed and the minimum target weight; the maximum value of the impact kinetic energy range is obtained according to the impact speed and the maximum target weight.

9. A device for detecting a protective effect, comprising a processor and a memory storing program instructions, characterized in that: The processor is configured to execute the method for detecting a protective effect according to any one of claims 1 to 8 when running the program instructions.

10. A detection system, characterized in that: include: Impact testing machine, used to impact the protective material with an impact component; Testing equipment, used to detect the impact result corresponding to the impact of the impact component on the protective material; The device for detecting protective effects as claimed in claim 9.

Images