Novel intelligent sharp edge tester and edge sharpness degree evaluation method

Abstract

A novel intelligent sharp edge tester comprises a testing head, a testing adhesive tape is arranged on the testing head, and a result of a sharp edge test is judged according to the pressed pressure of the testing head and the damage degree of the testing adhesive tape; and the data processing component can perform data processing on the pressure value data, and the data processing at least comprises the steps of displaying the pressure value data, storing and tracing the pressure value data, performing graphical generation on the pressure value data, and judging whether the sharp edge test result is credible or not. The invention further provides an edge sharpness degree evaluation method, and edge sharpness degree grade evaluation can be carried out. According to the invention, visualization of test data can be realized, a basis can be provided for evaluation of the sharpness degree and the damage risk level, and the problems that in the prior art, the test result is inaccurate because the test force value of mechanical sharp edge test equipment cannot meet the test requirement in the whole test process; and the data is difficult to read and cannot be traced, and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of sharp edge testing equipment and sharpness assessment, and belongs to the field of consumer product safety testing, including safety testing of consumer products such as household appliances, children's toys, daily hardware, and motor vehicles. More specifically, it particularly relates to a new type of intelligent sharp edge tester and an edge sharpness assessment method. Background Art

[0002] In the process of analyzing and summarizing mechanical injury incidents caused by consumer products, it was found that sharp edges are an important factor causing mechanical injuries. At present, except for children's products, most domestic product safety standards determine the sharp edges of products through visual inspection. For example, according to relevant requirements: "Except for the necessary rough or sharp edges to make the device have a certain function, there should be no such sharp edges on the device that will cause harm to the user's normal use or maintenance. Determine whether it is qualified through visual inspection." Visual inspection has certain uncertainties, which is not conducive to the implementation of the requirements for the determination of sharp edges of products by enterprises and testing institutions. Consumer products with sharp edges are often found in the market, which bring dangers and injuries to consumers, and therefore also make manufacturers face the possibility of complaints, lawsuits or product recalls. In the face of the above problems, new testing and analysis methods for sharp edges of consumer products are urgently needed.

[0003] Through the comparison of product sharp edge tests organized in the household appliance industry, it was found that: 1. The laboratories that use visual inspection according to the standards have a high rate of incorrect test results; 2. The test results of laboratories that use the cigarette test method or the stocking test method are also not ideal; 3. Some laboratories use mechanical sharp edge testing equipment, and the consistency of results is relatively good.

[0004] Through the test comparison feedback data carried out in the home appliances, children's toys, shoes, lamps and other industries, mechanical sharp edge test equipment has gradually exposed some problems, including: 1. Due to the limitation of the equipment testing principle, the force value is unstable during the test, resulting in large deviations in the test results; 2. Sharp edge judgment can only be performed under a single force value (6.7N), which cannot provide effective data support for edge sharpness and injury risk assessment; 3. The test process is not traceable, and the reasons for inconsistent results cannot be traced. Therefore, each testing laboratory has put forward the requirement to develop new testing equipment and sharpness assessment methods. Summary of the invention

[0005] 1. Technical issues

[0006] To sum up, how to solve the problems in the prior art that mechanical sharp edge testing equipment can only judge sharp edges under a single force value, the test force value cannot guarantee that the test requirements are met during the entire test process, resulting in inaccurate test results, data reading is difficult and cannot be traced, and there is a lack of methods to evaluate the sharpness of the tested edges, has become an urgent problem to be solved by testers in this field.

[0007] (II) Technical solution

[0008] In order to achieve the above object, the present invention provides the following technical solutions:

[0009] The present invention provides a novel intelligent sharp edge tester. In the present invention, the novel intelligent sharp edge tester comprises:

[0010] A test assembly, comprising a test head, wherein the test head is used to set a test tape simulating skin, wherein the test tape is used for the test head to contact the edge of the object to be tested under stress based on a preset test force value;

[0011] A data processing component, wherein the data processing component is used to continuously monitor the force data of the test head in real time during the entire test process and to form and display pressure value curve data. The pressure value curve data is used to determine whether the magnitude of the force applied to the edge of the object to be tested during this sharp edge test meets the preset requirements compared with the preset test force value.

[0012] Preferably, in the novel intelligent sharp edge tester provided by the present invention:

[0013] The data processing component forms a plurality of groups of pressure value curve data, and each group of pressure value curve data corresponds to a different preset test force value.

[0014] Preferably, in the novel intelligent sharp edge tester provided by the present invention:

[0015] The data processing component is used to generate and display a test data distribution graph according to a plurality of groups of pressure value curve data, the received test results of the test tape for each group of pressure value curve data, and preset sharpness information;

[0016] The test data distribution graph includes a test force value horizontal axis for representing a preset test force value, a deviation threshold horizontal axis parallel to the test force value horizontal axis, and a data curve composed of test data.

[0017] Preferably, in the novel intelligent sharp edge tester provided by the present invention:

[0018] The test assembly includes a test rod, which is a hard rod, and the test head is arranged at one end of the test rod; the data processing assembly includes a pressure sensor, which is used to monitor the force information of the test head, and the other end of the test rod is rigidly connected to the pressure sensor.

[0019] Preferably, in the novel intelligent sharp edge tester provided by the present invention:

[0020] The data processing component includes a control board, which is connected to the pressure sensor signal and performs data processing;

[0021] It also includes a control button, which is used to input sharp edge force value test parameters into the control panel. The sharp edge force value test parameters at least include: a preset test force value and a comparison deviation value during this sharp edge test.

[0022] Preferably, in the novel intelligent sharp edge tester provided by the present invention:

[0023] The data processing component includes a display, which is connected to the control board by signal and is used for displaying the force data of the test head and / or the pressure value curve;

[0024] Also includes a shell;

[0025] The pressure sensor is fixedly arranged in the shell, the control board is arranged in the shell, the display is embedded in the shell, the test rod passes through the shell, and the test head is located outside the shell;

[0026] The data processing component also includes an alarm device for giving an alarm when the pressure value data monitored in real time does not meet the requirements.

[0027] The present invention also provides an edge sharpness assessment method, which uses the novel intelligent sharp edge tester as described above to perform a sharpness test on the edge of the object to be tested, comprising:

[0028] Step 1: Set the test tape on the test head of the new intelligent sharp edge tester;

[0029] Step 2: Enter the sharp edge force test parameters into the new intelligent sharp edge tester;

[0030] Step 3: As required, press the test head provided with the test tape to the edge of the object to be tested and move it, and evaluate the sharpness of the edge of the object to be tested and the risk level according to the degree of damage of the test tape;

[0031] In the step three, the requirements include a moving time requirement and a moving distance requirement.

[0032] Preferably, in the edge sharpness assessment method provided by the present invention:

[0033] In the step 1, it also includes performing a zeroing calibration operation on the novel intelligent sharp edge tester, wherein the zeroing calibration operation includes a front zeroing operation and a back zeroing operation;

[0034] Or, in the step one, it also includes performing zero calibration and 6.7N force calibration operations on the new intelligent sharp edge tester, wherein the zero calibration operation includes a front zeroing operation and a back zeroing operation, and the 6.7N force calibration operation includes a front 6.7N force calibration operation and a back 6.7N force calibration operation.

[0035] Preferably, in the edge sharpness assessment method provided by the present invention:

[0036] In the step 3, the sharpness is divided into at least four levels according to the scratch state of the tape under the applied pressure of 6.7N, which are:

[0037] Grade 1 - no cuts in the tape;

[0038] Grade 2 - The tape is cut but not penetrated and the bottom layer of tape cannot be observed;

[0039] Grade 3: The tape has been cut and has penetrated both layers, and the bottom layer of tape can be observed;

[0040] Grade 4: The tape is cut and completely penetrated;

[0041] or,

[0042] In the step 3, the sharpness is divided into at least four levels according to the scratch state of the tape and the pressure applied during the test, namely:

[0043] Level 1 - No cuts are made on the sensing tape when the applied pressure is 6.7N to 8N, or a cut is made on the sensing tape when the applied pressure is 9N or above, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cuts;

[0044] Level 2: When the pressure is 6.7N, the tape is cut, but the bottom layer of tape cannot be seen, or when the pressure is 8N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut;

[0045] Level 3: When the applied pressure is 5N to 6.7N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut;

[0046] Level 4: When the applied pressure is 4N to 5N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut;

[0047] Preferably, the higher the level of sharpness, the higher the severity of the injury caused by the measured edge.

[0048] Preferably, in the edge sharpness assessment method provided by the present invention:

[0049] The test tape comprises three layers, namely, a No. 1 sensing tape arranged at the outermost layer, a No. 2 sensing tape arranged at the middle layer, and an indicator tape arranged at the bottom layer;

[0050] The thickness of the No. 1 sensing tape is a tape with an adhesive backing, the total thickness of the No. 1 sensing tape is 0.114 mm, wherein the backing thickness is 0.064 mm-0.089 mm, and the tensile strength of the No. 1 sensing tape is 110 kN / m 2 ;

[0051] The thickness of the No. 2 sensing tape is 0.64 mm-1.02 mm, and the tensile strength of the No. 2 sensing tape is 379 kN / m 2 ;

[0052] The thickness of the indicator tape is 1.14mm-2.03mm, and the tensile strength of the No. 2 sensing tape is 758kN / m 2 ;

[0053] Preferably, the No. 1 sensing tape is a transparent tape, the No. 2 sensing tape is a white tape, and the indicator tape is a black tape.

[0054] (III) Beneficial effects

[0055] The present invention provides a novel intelligent sharp edge tester, which includes: a test component, having a test head, the test head is used to set a test tape simulating skin, the test tape is used for the test head to contact the edge of the object to be tested under stress based on a preset test force value; a data processing component, the data processing component is used to monitor the force information of the test head in the entire test process in real time and form and display pressure value curve data when performing a sharp edge test, and the pressure value curve data is used to determine whether the magnitude of the force applied to the edge of the object to be tested during this sharp edge test meets the preset requirements compared with the preset test force value. The present invention also provides an edge sharpness assessment method.

[0056] The above structural design, compared with the existing mechanical sharp edge testing equipment, includes at least the following

[0057] Beneficial effects:

[0058] 1. The present invention is provided with a data processing component, which is provided with a display, a control panel and a pressure sensor. After the pressure value in the test process is obtained by the pressure sensor, the pressure value can be displayed in real time on the display, as well as a statistical chart or curve of the pressure value after the test is completed, so as to realize the visualization of the test data.

[0059] 2. The present invention can set a comparison threshold, that is, realize the adjustable function of the test force value, so that the present invention is not limited to the test of the traditional force value (6.7N), thereby expanding the test scope of the present invention and providing a basis for the assessment of sharpness and injury risk level.

[0060] 3. The sharpness and injury risk level of the object under test can be evaluated according to the pressure applied to the object under test during the test and the degree of damage to the test tape, so that the sharpness of the edge under test has a standard to follow, and the product requirements can be made more standardized, which will help manufacturers to improve product safety and quality and avoid human injuries caused by sharp edges of products.

[0061] 4. During the entire test process, the pressure values ​​can be collected and displayed in real time. At the same time, the collected pressure values ​​can be stored and read to achieve data traceability.

[0062] 5. Data processing of the pressure values ​​obtained during the test can not only visualize the data into charts or curves to make it easier to read and understand the data, but also divide all the data into qualified values ​​and unqualified values ​​according to the set sharp edge force test parameters (including preset test force values ​​and comparison deviation values). The percentage of qualified values ​​and unqualified values ​​in the total data volume can be used to determine whether the test is qualified.

[0063] 6. The present invention solves the problems in the prior art that the test force value of the mechanical sharp edge testing equipment cannot be guaranteed to meet the test requirements, resulting in inaccurate test results, affecting the judgment of the sharpness, and the data is difficult to read and cannot be traced. The present invention can realize data graphics, data storage, and data traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0065] Figure 1 The figure is a schematic diagram of the appearance and structure of a typical mechanical sharp edge testing device in the prior art;

[0066] exist Figure 1In the figure, the corresponding relationship between the reference numerals and the component names is as follows:

[0067] A-detachable test set; B-test head.

[0068] Figure 2 This is a schematic diagram of the structure of a novel intelligent sharp edge tester in an embodiment of the present invention from a top view;

[0069] Figure 3 It is a structural schematic diagram of the novel intelligent sharp edge tester in the embodiment of the present invention when the display is facing upward in the state of hanging weights;

[0070] Figure 4 It is a structural schematic diagram of the novel intelligent sharp edge tester in the embodiment of the present invention when the display is facing downward in the state of hanging weights;

[0071] Figure 5 It is a schematic diagram of the local structure when the detachable test head cover is provided with adhesive tape in an embodiment of the present invention.

[0072] exist Figures 2 to 5 In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0073] Housing 1, control panel 2, display 3, power supply assembly 4, pressure sensor 5, test rod 6, test head 7, weight 8, detachable test head cover 9, No. 1 sensing tape 10, No. 2 sensing tape 11, indicator tape 12. DETAILED DESCRIPTION

[0074] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to a tester in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0075] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For ordinary testers in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0076] Please refer to Figures 2 to 5 ,in, Figure 2 This is a schematic diagram of the structure of a novel intelligent sharp edge tester in an embodiment of the present invention from a top view; Figure 3 It is a structural schematic diagram of the novel intelligent sharp edge tester in the embodiment of the present invention when the display is facing upward in the state of hanging weights; Figure 4 It is a structural schematic diagram of the novel intelligent sharp edge tester in the embodiment of the present invention when the display is facing downward in the state of hanging weights; Figure 5 It is a schematic diagram of the local structure when the detachable test head cover is provided with adhesive tape in an embodiment of the present invention.

[0077] In order to solve the problems in the prior art, the present invention proposes a novel intelligent sharp edge tester, which comprises: a test component and a data processing component.

[0078] The test assembly has a test head. The test head is provided with a test tape, which can be provided in the following manner: the test tape is set on the test head, for example, the test tape is set on the test set, and the test set is set on the test head; or the test tape can be wrapped around the test head, which is not limited in this embodiment. The test tape is used to simulate skin, usually the skin of a finger. When the test head provided with the test tape is subjected to force, the test tape on it will contact the edge of the object to be tested, which edge usually refers to the edge of the object that can be touched by the user. This embodiment does not specifically limit the specific structure and color of the test tape, which can be: a three-layer structure, for example: a first sensing tape (or sensing tape No. 1) located in the outer layer, a second sensing tape (or sensing tape No. 2) located in the middle layer, and an indicator tape located in the inner layer. The color of the first sensing tape can be transparent, the color of the second sensing tape can be white, and the color of the indicator tape can be black. When performing a sharp edge test, the cut conditions of each layer of tape in the test tape can be judged.

[0079] In the present invention, the use of the adhesive tape is also subject to certain restrictions, as shown in the following table.

[0080]

[0081] In the above table: the indicator tape can be a colored tape (can be black, red, etc.), which is set at the bottom layer (there are three layers of tape, and the indicator tape is set at the bottom layer); the No. 2 sensing tape is set at the middle layer, which can be a white tape; the No. 1 sensing tape is set at the outermost layer, which can be a transparent tape. It should be noted that the tape needs to be stored in an environment of 20±5℃.

[0082] When using the novel intelligent sharp edge tester to perform a sharp edge test, the test head provided with the test tape applies force to the edge of the object to be tested according to the preset test force value and other requirements, and then moves the test head along the edge of the object to be tested by a preset length. Among them, the other requirements include the time requirements for a single test and the moving length requirements for a single test.

[0083] The data processing component is used to continuously monitor the force information of the test head during the entire test process in real time when using the new intelligent sharp edge tester to perform sharp edge testing, and to form and display pressure value curve data. The pressure value curve data is used to determine whether the magnitude of the force value applied to the edge of the object to be tested during this sharp edge test meets the requirements, that is, whether it meets the requirements compared with the preset test force value, such as counting the percentage of unqualified data in the total data in all test data, and comparing the percentage with the percentage threshold. Qualified data means: the real-time monitored data is within the deviation threshold range compared with the preset test force value; unqualified data means: the real-time monitored data is not within the deviation threshold range compared with the preset test force value. If it is determined to meet the requirements, it is determined that this test process is qualified and can be used for the judgment of sharp edges. If it is determined that it does not meet the requirements, it is determined that this test process is unqualified and needs to be retested. The data points in the pressure value curve include: test time and force value. Usually, the test time is the horizontal axis and the force value is the vertical axis. The force value is the force value from the edge of the object to be tested that the test head is subjected to in real time. The force information of the test head is used to characterize the force applied to the edge of the object to be tested. It can be set according to actual conditions and requirements. The data processing component can realize the storage and traceability of pressure value data.

[0084] In a specific embodiment of the present invention, the position of the rotating arm of the tester is first adjusted to ensure that the test head coated with the tape applies a certain force (for example, a force value of 6.7N) on the edge to be tested. During the test, if the length of the test edge is greater than 50mm, the tester should move 50mm along the edge to be tested, return to the original position without removing the tester, and finally move away from the edge. The entire movement distance between the edge to be tested and the test head does not exceed 100mm, and the test adopts an approximately uniform movement method, and the time is controlled within 2s to 5s. If the length of the test edge is less than 50mm, the test distance should be twice its length (for example, for a test edge 40mm long, the tester should move along its length and then return to the original position so that the entire movement distance between the test edge and the tester is 80mm, and the time is controlled within 2s to 5s.

[0085] Each test process will form a pressure value curve data, which corresponds to a preset test force value. By changing the preset test force value, the new intelligent sharp edge tester is repeatedly used to perform sharp edge tests on the edge of the object to be tested, thereby forming multiple sets of pressure value curve data. Multiple sets of pressure value curve data can more fully judge the sharpness of the edge of the object to be tested (which can also be understood as the severity of the injury, because the sharper the edge, the more serious the injury).

[0086] In step 3, the sharpness is divided into at least four levels according to the scratch state of the tape, as shown in the following table:

[0087]

[0088]

[0089] Further, in step three, the sharpness is divided into at least four levels according to the scratch state of the tape and the pressure applied during the test, as shown in the following table:

[0090]

[0091] In the present invention, the higher the sharpness level, the higher the injury severity of the measured edge. As shown in the above table, when the sharpness level is level 1, the injury severity is generally considered to not cause a risk of cutting, while when the sharpness level is level 4, the injury severity is considered to cause severe cutting.

[0092] Note: In the above two tables, the test tape is provided with three layers, the bottom layer is the indicator tape (with color, preferably black), the middle layer is the No. 2 sensing tape, and the outermost layer is the No. 1 sensing tape.

[0093] After the test process is completed, the test results of the test tape are judged, such as observing whether there is a cut on the test tape, whether the indicator tape can be seen through the cut, etc., and the sharpness of the edge of the object to be tested is judged accordingly. Specifically, the data processing component is used to generate and display a test data distribution graph according to multiple groups of pressure value curve data, the test results of the test tape received for each group of pressure value curve data, and the preset sharpness information. The test data distribution graph includes a test force value horizontal axis for representing the preset test force value, a deviation threshold horizontal axis parallel to the test force value horizontal axis (the deviation threshold horizontal axis is set above and below the test force value horizontal axis) and a data curve, wherein the data curve is a broken line formed by connecting multiple test data. The implementation of this function can be achieved by a host computer, and this embodiment does not specifically limit the implementation method of this function. This embodiment does not specifically limit the sharpness information. The 8N in the test result indicates that the preset test force value is 8N, and the 9N in the test result indicates that the preset test force value is 9N.

[0094] The design ideas of the tester are as follows: 1. Different test force values ​​can be set as needed; 2. The digital display screen and alarm device can be used to help testers keep the force value stable; 3. The data of the test process can be recorded and visualized by generating a pressure-time curve, which serves as a basis for judging whether the experimental process meets the standard requirements.

[0095] Based on the above design ideas, the present invention provides a new intelligent sharp edge tester. For the new intelligent sharp edge tester, its hardware structure is as follows, including:

[0096] 1. Shell 1. Shell 1 is made of engineering plastic or other materials. Its main body is a long handle structure, which is convenient for staff to hold. A through window is set at the front end. There is a cavity from the middle to the front end, which is used to install pressure sensor 5, control panel 2, display 3 and other structures. The middle to the back end is a handle for detection personnel to hold. Silicone can be set at the handle to improve the comfort of holding. The handle has a cavity for installing the power supply component 4 and setting a USB interface. The USB interface is used to charge the power supply component 4 and connect with peripherals (such as computers, mobile phones, etc.) to realize data transmission and processing.

[0097] 2. Pressure sensor 5. The pressure sensor 5 is disposed inside the housing 1, specifically in a cavity from the middle to the front end of the housing 1. The pressure sensor 5 is fixed inside the housing 1, and may be fixed by bolts or by other means, so long as it can be firmly disposed inside the housing 1.

[0098] 3. Test rod 6. The test rod 6 is made of metal material and is a solid long rod structure. One end of the test rod 6 is a flat structure and is located in the housing 1 through a window for fixed connection with the pressure sensor 5. The other end of the test rod 6 is located outside the housing 1 and can be provided with an external thread or other structure at its end for connection with the test head 7.

[0099] 4. Test head 7. In the present invention, the test head 7 is preferably a metal test head 7, which is a shorter cylindrical structure, and the test head 7 is connected to one end of the test rod 6 located outside the housing 1. The test head 7 and the test rod 6 are preferably an integrated structure, and they can also be a detachable connection structure, for example, the test head 7 and the test rod 6 are threadedly connected. Among them, the test head 7 and the test rod 6 are both steel structures, the diameter of the test head 7 is 12.7mm, the length is 19mm, and the diameter of the test rod 6 is 6.4mm. In one embodiment of the present invention, a detachable test head cover 9 is provided on the test head 7, and the diameter of the detachable test head cover 9 is 15.9mm. In a preferred embodiment of the present invention, an annular groove, i.e., a calibration positioning groove, is provided in the middle axial portion of the test head 7 for hanging a weight 8 (the weight 8 is hung on the calibration positioning groove by a thin rope whose weight is not counted).

[0100] 5. Control panel 2. Control panel 2 is the control structure of the present invention, and control panel 2 can receive and process signals. The signals received by control panel 2 include: a. sharp edge force value test parameter signal entered by the operator; b. pressure signal obtained by pressure sensor 5. The signal processing of control panel 2 includes: a. digital display of pressure signal; b. storage and traceability of pressure signal; c. comparison processing of pressure signal and comparison threshold; d. graphing of pressure signal (graphical display is possible); e. data analysis of all pressure signals obtained in a complete test process.

[0101] 6. Display 3. Display 3 is a liquid crystal display, which is used to display menus, pressure values, and graphical pressure signals. Display 3 can be a touch display, so that sharp edge force value test parameters can be entered through display 3. Display 3 can also be a traditional liquid crystal display. The present invention also needs to set control buttons on the housing 1, and enter the sharp edge force value test parameters through the control buttons.

[0102] 7. Alarm device. The alarm device is preferably a light alarm, which is controlled by a control panel and realizes the alarm through color changes. The alarm device can also be a sound alarm, which can be a voice alarm or a buzzer alarm. The alarm device can also be an audible and visual alarm. Specifically, when the real-time monitored pressure value data does not meet the requirements, an alarm is issued, such as when the real-time monitored pressure value data exceeds the comparison deviation threshold compared with the preset test force value, an alarm is issued.

[0103] 8. Power supply component 4. The power supply component 4 is preferably a rechargeable lithium battery. The power supply component 4 has a built-in circuit board for achieving safe and stable charging and stable power supply to the control board 2, the display 3, the alarm device, and the pressure sensor 5.

[0104] 9. Test tape. The test tape can be a finished test tape (or a detachable test head cover 9), or it can be wound on site. The test tape is set on the test head 7, and generally has three layers. The colors of the three layers of test tape should also be different, for example, the innermost layer is black, the middle is white, and the outer layer is transparent, so that the damage of the test tape can be observed more conveniently.

[0105] The present invention provides a novel intelligent sharp edge tester, and the functions of the novel intelligent sharp edge tester are as follows:

[0106] 1. The control board 2 obtains the pressure value during the sharp edge test through the test head 7 (the pressure is transmitted from the test head 7 to the test rod 6 and then to the pressure sensor 5, and the control board 2 is connected to the pressure sensor 5), and then displays it in real time through the display 3.

[0107] 2. Controlled by the control panel, during a complete test process, the pressure value is continuously obtained at the set time interval, and is displayed and stored in real time to facilitate data traceability.

[0108] 3. Real-time comparison between the pressure value and the comparison threshold is realized during the test process, and a real-time alarm is issued when the pressure value does not meet the test standard (that is, the difference relative to the comparison threshold has exceeded the comparison deviation value).

[0109] 4. During a complete test process, all the pressure value data obtained will be processed graphically to form a chart or curve.

[0110] 5. During a complete test process, the test data is analyzed and the number and proportion of qualified values ​​(i.e., the difference is less than the comparison deviation value relative to the comparison threshold) and unqualified values ​​(i.e., the difference exceeds the comparison deviation value relative to the comparison threshold) are calculated.

[0111] The present invention provides a novel intelligent sharp edge tester. The advantages of using the novel intelligent sharp edge tester are as follows:

[0112] 1. A control panel 2 is provided. After the pressure value during the test is obtained through the pressure sensor 5, the pressure value can be displayed in real time on the display 3, as well as a statistical chart or curve of the pressure value after the test is completed, to realize visualization of the test data.

[0113] 2. The operator can input the sharp edge force test parameter signal, which includes a comparison threshold, that is, realize the adjustable function of the test force value, so that the present invention is not limited to the test of the traditional force value (6.7N), thereby expanding the test scope of the present invention and providing a basis for the assessment of the sharpness and injury risk level.

[0114] 3. The sharpness and injury risk level of the object under test can be evaluated based on the pressure applied to the object under test and the degree of damage to the test tape during the test.

[0115] 4. During the entire test process, the pressure values ​​can be collected and displayed in real time. At the same time, the collected pressure values ​​can be stored and read to achieve data traceability.

[0116] 5. Data processing of the pressure values ​​obtained during the test can not only visualize the data into charts or curves to make it easier to read and understand the data, but also divide all the data into qualified values ​​and unqualified values ​​according to the set sharp edge force test parameter signals (including comparison thresholds and comparison deviation values), and judge whether the test is qualified by counting the percentage of qualified values ​​and unqualified values ​​in the total data volume.

[0117] Based on the above-mentioned new intelligent sharp edge tester, the present invention also provides an edge sharpness assessment method, which uses the above-mentioned new intelligent sharp edge tester to perform a sharpness test on the tested part of the object to be tested, including: step one, putting a test tape set on the test head of the new intelligent sharp edge tester; step two, entering the sharp edge force value test parameters into the new intelligent sharp edge tester; step three, pressing the test head with the test tape to the tested part of the object to be tested and sliding it, and evaluating the sharpness and risk level of the tested part of the object to be tested according to the pressure on the test head and the degree of damage of the test tape.

[0118] Preferably, in step one, it also includes performing a zeroing calibration operation on the novel intelligent sharp edge tester, and the zeroing calibration operation includes a front zeroing operation and a back zeroing operation.

[0119] Preferably, in step one, it also includes performing zero calibration and 6.7N force calibration operations on the new intelligent sharp edge tester, the zero calibration operation includes a front zeroing operation and a back zeroing operation, and the 6.7N force calibration operation includes a front 6.7N force calibration operation and a back 6.7N force calibration operation.

[0120] Specifically, the present invention provides a new type of intelligent sharp edge tester. In the present invention, the new type of intelligent sharp edge tester includes a test head 7, which is used to contact the object to be tested and can perform a sharp edge test on the object to be tested under pressure (the pressure value can be changed according to the test requirements). The pressure sensor 5 and the control panel 2 are used in conjunction to monitor the force of the test head 7 (that is, the test head 7 is pressed on the tested part) and form pressure value data, and the display 3 can display the pressure value data. Among them, the force on the test head 7 is specifically applied by the operator holding the handle. After the test head 7 contacts the edge of the object to be tested, the operator holds the handle and presses down to press the test head 7 on the tested part of the object to be tested. The test head 7 slides on the tested part under pressure to complete the sharp edge test operation.

[0121] The novel intelligent sharp edge tester provided by the present invention is provided with a control board 2, which has a control circuit (the control circuit can be any small circuit board with data comparison function in the prior art), and a display 3 (the display 3 is preferably a liquid crystal display) is connected to the control board 2 signal. In the present invention, the control board 2 mainly has the following three functions: 1. Receive pressure value data (the pressure value data is generated by the pressure sensor) and can store the pressure value data, and can also display the pressure value data through the display 3; 2. Perform data comparison, that is, store in advance or input a comparison threshold in real time, and the value range of the comparison threshold is 0-20N. During the test, the comparison threshold is set according to the expected pressure applied to the test head. For example, if a pressure of 3N is expected to be applied to the test head, the comparison threshold is entered as 3N. During the test, the pressure sensor obtains the real-time pressure of the test head and generates pressure value data, and then the pressure value data is compared with the comparison threshold through the control board 2; 3. Data processing is performed to form a chart or data curve, which is then displayed through the display 3. Specifically, the control circuit can collect and store the pressure value data obtained by the pressure sensor 5 according to the set interval (during the detection process, the pressure value data sent by the pressure sensor 5 is obtained at a certain time interval) and can form a pressure test curve.

[0122] In a specific embodiment of the present invention, the housing 1 of the novel intelligent sharp edge tester is made of engineering plastics, the display 3 is mounted on the upper side of the housing 1, and the control circuit is arranged in the housing 1. The housing 1 is both the main structure of the present invention, used for the installation of other components, and provides a handle for the user to hold, so as to facilitate the use of the present invention.

[0123] In the present invention, the control panel 2 and the display 3 are both power-consuming structures. If an alarm device is provided, the alarm device is also a power-consuming structure in the present invention. In order to provide energy to the power-consuming structure, the present invention provides a power supply component 4, which is electrically connected to the control panel 2, the display 3 and the pressure sensor. Specifically, the rear part structure of the shell 1 (i.e., the rear part of the shell 1, the front end of the shell 1 is used to install the test rod 6) is a handle structure, and the handle is a part of the structure of the shell 1, which is made of engineering plastics. The handle is a cylindrical hollow structure, and the outer side surface can be shaped, for example, according to ergonomics, a wave shape is set at the position where the fingers hold the handle, or an anti-slip corrugation is set on the outside of the handle, or a flexible silicone layer is set to improve the feel, etc. A power supply component 4 is set in the handle, and the power supply component 4 is a rechargeable battery. A charging interface is set at the tail end of the handle (the charging interface can be a USB charging port, with a built-in charging circuit, and has functions such as charging protection).

[0124] In the present invention, the control panel 2 is provided with control buttons, and the setting methods of the control buttons include multiple ways: for example, a direction control button is set, and a control option is selected in the control menu displayed on the display 3 by controlling the cursor position. In addition, the control circuit is also provided with a force indicator light, which is used to flash when the pressure value data is greater than the pressure setting threshold, or the force indicator light is a multi-color light group, which displays different colors according to whether the real-time pressure value is qualified.

[0125] Based on the above design, the present invention also provides an alarm prompt component, which can be a light alarm prompt and / or a sound alarm prompt, wherein the light alarm prompt (i.e., using a force indicator light for alarm) includes two lamp beads of different colors (preferably LED lamp beads, the colors can be a red-green combination, or a red-blue combination), and the lamp beads are embedded in the control board 2. The sound alarm prompt uses a buzzer or a conventional speaker. In a specific embodiment of the present invention, during calibration, if the monitored force value is within a reasonable range (the reasonable range refers to the set threshold range), the calibration is determined to be qualified, the green light is on, and no sound alarm prompt is issued; if the monitored force value is outside the reasonable range, the calibration is determined to be unqualified, the red light is on, and a sound alarm prompt is issued.

[0126] The present invention also provides a test head cover, which is a compliant plastic cover, and is detachably mounted on the test head 7. During the test, the test head cover contacts the test part and after passing through it, it is judged whether the test structure is compliant based on whether it is damaged. Of course, the present invention can also stick tape on the test head cover for testing.

[0127] The specific usage of the present invention is as follows: first calibrate the tester, and enter the test process after the calibration is completed. In the test process, first enter the comparison threshold according to the expected pressure of the test head. For example, the test force value of the general sharp edge test is 6.7N. The present invention can start measuring from a relatively small force value, such as starting from 2N, then 3N, 4N, 5N, 6N, 6.7N, 8N, 9N, 10N...20N. Such operation can more accurately obtain the sharpness of the edge of the object being tested. This embodiment does not limit the order of selecting the test force value during the test.

[0128] When evaluating the sharpness and injury risk level of the object under test, the main data used are the pressure value and the degree of damage to the test tape: taking 4N as an example, if the proportion of qualified values ​​in the total amount of data obtained in a complete test process meets the setting (for example, the proportion of qualified values ​​is not less than 80%), and after the test, the test tape is torn through two layers, it can be determined that the object under test is very sharp and has a high injury risk level; taking 8N as an example, if the proportion of qualified values ​​in the total amount of data obtained in a complete test process meets the setting (for example, the proportion of qualified values ​​is not less than 80%), and after the test, the test tape remains intact (or only one or two layers of tape are torn), it can be determined that the injury risk level of the object under test is low.

[0129] The present invention needs to be calibrated before it is put into use, or it also needs to be calibrated after being used for a period of time. The calibration process of the present invention is as follows: the front side of the tester faces upward, the test rod 6 is kept horizontal, and the controller controls the pressure value reading to return to zero, then the back side of the tester faces upward, the test rod 6 is kept horizontal, and the controller controls the pressure value reading to return to zero; then the front side of the tester faces upward, the weight 8 is hung to read and calibrate, and the front side of the tester faces downward, and the weight 8 is hung to read and calibrate.

[0130] In the above structural design, the present invention directly connects one end of the test rod 6 to the pressure sensor 5, which can transmit the force to the pressure sensor 5 without loss, thereby ensuring the test accuracy. In addition, during the test, the present invention is provided with a display 3, which can display the value of the force in real time and can determine whether the experimental process is qualified and meets the test standards.

[0131] After the detection program is completed, the present invention can display the pressure curve (or chart) of this test on the liquid crystal screen, and the pressure curve represents the change of the pressure value in the whole test program. By observing the pressure curve, the distribution of pressure in the test process (the degree of deviation from the comparison threshold value) is judged. Specifically, with the comparison threshold value (or the preset test force value) as the center line, the upper deviation line and the lower deviation line are set at the points corresponding to the comparison deviation value (or the deviation threshold value) above and below the center line, and the pressure curve is drawn between the upper deviation line and the lower deviation line, so that the distribution of qualified values ​​and unqualified values ​​in the whole test process can be observed intuitively. Of course, the present invention can also perform data statistics through the control board, for example: the comparison threshold value and the comparison deviation value are set, and the pressure values ​​collected in this test are 50 in total. By comparing and calculating, the percentage of qualified values ​​in the total amount of data and the percentage of unqualified values ​​in the total amount of data can be obtained, thereby providing data basis for whether this test is qualified.

[0132] As can be seen from the above, the test pressure applied by the present invention during the test process is 6.7N (of course, according to the test purpose, the test pressure ranges from 0-20N, or a larger range can be taken), and the upper and lower floating values ​​are 0.2N, so the test pressure value is 6.5N to 6.9N. In addition, for different application scenarios or different test requirements of customers, the test pressure value can be set according to the requirements. For example, in a certain embodiment, a test pressure of 15N is required, and the upper and lower floating values ​​can be 1N, so the test pressure value is normal between 14N and 16N.

[0133] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For testers in this field, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new intelligent sharp edge tester, characterized in that: include: A test assembly, comprising a test head, wherein the test head is used to set a test tape simulating skin, wherein the test tape is used for the test head to contact the edge of the object to be tested under stress based on a preset test force value; A data processing component, wherein the data processing component is used to continuously monitor the force data of the test head in real time during the entire test process and to form and display pressure value curve data. The pressure value curve data is used to determine whether the magnitude of the force applied to the edge of the object to be tested during this sharp edge test meets the preset requirements compared with the preset test force value.

2. The novel intelligent sharp edge tester according to claim 1 is characterized in that: The data processing component forms a plurality of groups of pressure value curve data, and each group of pressure value curve data corresponds to a different preset test force value.

3. The novel intelligent sharp edge tester according to claim 2 is characterized in that: The data processing component is used to generate and display a test data distribution graph according to a plurality of groups of pressure value curve data, the received test results of the test tape for each group of pressure value curve data, and preset sharpness information; The test data distribution graph includes a test force value horizontal axis for representing a preset test force value, a deviation threshold horizontal axis parallel to the test force value horizontal axis, and a data curve composed of test data.

4. The novel intelligent sharp edge tester according to claim 1 is characterized in that: The test assembly includes a test rod, which is a hard rod, and the test head is arranged at one end of the test rod; the data processing assembly includes a pressure sensor, which is used to monitor the force information of the test head, and the other end of the test rod is rigidly connected to the pressure sensor.

5. The novel intelligent sharp edge tester according to claim 4 is characterized in that: The data processing component includes a control board, which is connected to the pressure sensor signal and performs data processing; It also includes a control button, which is used to input sharp edge force value test parameters into the control panel. The sharp edge force value test parameters at least include: a preset test force value and a comparison deviation value during this sharp edge test.

6. The novel intelligent sharp edge tester according to claim 5 is characterized in that: The data processing component includes a display, which is connected to the control board by signal and is used for displaying the force data of the test head and / or the pressure value curve; Also includes a shell; The pressure sensor is fixedly arranged in the shell, the control board is arranged in the shell, the display is embedded in the shell, the test rod passes through the shell, and the test head is located outside the shell; The data processing component also includes an alarm device for giving an alarm when the pressure value data monitored in real time does not meet the requirements.

7. A method for evaluating edge sharpness, characterized in that: The method of using the novel intelligent sharp edge tester as claimed in any one of claims 1 to 6 to perform a sharpness test on the edge of an object to be tested comprises: Step 1: Set the test tape on the test head of the new intelligent sharp edge tester; Step 2: Enter the sharp edge force test parameters into the new intelligent sharp edge tester; Step 3: As required, press the test head provided with the test tape to the edge of the object to be tested and move it, and evaluate the sharpness of the edge of the object to be tested and the risk level according to the degree of damage of the test tape; In the step three, the requirements include a moving time requirement and a moving distance requirement.

8. The edge sharpness assessment method according to claim 7, characterized in that: In the step 1, it also includes performing a zeroing calibration operation on the novel intelligent sharp edge tester, wherein the zeroing calibration operation includes a front zeroing operation and a back zeroing operation; Or, in the step one, it also includes performing zero calibration and 6.7N force calibration operations on the new intelligent sharp edge tester, wherein the zero calibration operation includes a front zeroing operation and a back zeroing operation, and the 6.7N force calibration operation includes a front 6.7N force calibration operation and a back 6.7N force calibration operation.

9. The edge sharpness assessment method according to claim 7, characterized in that: In the step 3, the sharpness is divided into at least four levels according to the scratch state of the tape under the applied pressure of 6.7N, which are: Grade 1 - no cuts in the tape; Grade 2 - The tape is cut but not penetrated and the bottom layer of tape cannot be observed; Grade 3: The tape has been cut and has penetrated both layers, and the bottom layer of tape can be observed; Grade 4: The tape is cut and completely penetrated; or, In the step 3, the sharpness is divided into at least four levels according to the scratch state of the tape and the pressure applied during the test, namely: Level 1 - No cuts are made on the sensing tape when the applied pressure is 6.7N to 8N, or a cut is made on the sensing tape when the applied pressure is 9N or above, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cuts; Level 2: When the pressure is 6.7N, the tape is cut, but the bottom layer of tape cannot be seen, or when the pressure is 8N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut; Level 3: When the applied pressure is 5N to 6.7N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut; Level 4: When the applied pressure is 4N to 5N, the tape is cut, and the two outer layers of tape are penetrated, and the bottom layer of tape can be seen through the cut; Preferably, the higher the level of sharpness, the higher the severity of the injury caused by the measured edge.

10. The edge sharpness assessment method according to claim 7, characterized in that: The test tape comprises three layers, namely, a No. 1 sensing tape arranged at the outermost layer, a No. 2 sensing tape arranged at the middle layer, and an indicator tape arranged at the bottom layer; The thickness of the No. 1 sensing tape is a tape with an adhesive backing, the total thickness of the No. 1 sensing tape is 0.114 mm, wherein the backing thickness is 0.064 mm-0.089 mm, and the tensile strength of the No. 1 sensing tape is 110 kN / m 2 ; The thickness of the No. 2 sensing tape is 0.64 mm-1.02 mm, and the tensile strength of the No. 2 sensing tape is 379 kN / m 2 ; The thickness of the indicator tape is 1.14mm-2.03mm, and the tensile strength of the No. 2 sensing tape is 758kN / m 2 ; Preferably, the No. 1 sensing tape is a transparent tape, the No. 2 sensing tape is a white tape, and the indicator tape is a black tape.

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