New intelligent sharp edge tester and edge sharpness assessment method

Abstract

A new type of intelligent sharp edge tester includes: a test head, on which a test tape is provided, and the result of the sharp edge test is determined according to the pressure of the test head and the degree of damage of the test tape; a data processing component, which can process the pressure value data, and the data processing includes at least the display of the pressure value data, the storage and traceability of the pressure value data, the graphical generation of the pressure value data, and the determination of whether the result of this sharp edge test is credible. The present invention also provides an edge sharpness assessment method, which can perform edge sharpness level assessment. The present invention can realize the visualization of test data, and can also provide a basis for the assessment of sharpness and injury risk level, solving the problems in the prior art that the test force value of the mechanical sharp edge testing equipment cannot ensure that it meets the test requirements during the entire test process, resulting in inaccurate test results, and the data is difficult to read and cannot be traced.

Description

Technical Field

[0001] The present invention relates to the technical fields 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 relates to a novel intelligent sharp edge tester and an edge sharpness assessment method. Background Art

[0002] During the analysis and summary of mechanical injury incidents caused by consumer products, it was discovered that sharp edges are a significant contributing factor. Currently, with the exception of children's products, most domestic product safety standards rely on visual inspection to determine sharp edges. For example, the following requirement states: "Except for rough or sharp edges necessary to achieve a particular function, the appliance shall not have sharp edges that could cause harm to the user during normal use or maintenance. Compliance shall be determined through visual inspection." Visual inspection carries a degree of uncertainty, hindering companies and testing agencies from implementing requirements for determining sharp edges. Consumer products with sharp edges are frequently found on the market, posing dangers and harm to consumers. Consequently, manufacturers face the possibility of complaints, lawsuits, or product recalls. To address these issues, new testing and analysis methods for sharp edges in consumer products are urgently needed.

[0003] Through the comparison of product sharp edge tests organized in the home appliance industry, it was found that: 1. The test results of laboratories that use visual inspection according to the standard have a high rate of incorrect results; 2. The test results of laboratories that use the cigarette test method or the stocking test method are also unsatisfactory; 3. Some laboratories use mechanical sharp edge testing equipment, and the consistency of the results is relatively good.

[0004] Based on feedback from tests conducted in industries such as home appliances, children's toys, shoes, and lighting, mechanical sharp-edge testing equipment has gradually exposed several issues. These include: 1. Due to limitations in the equipment's testing principles, the force applied during testing is unstable, leading to significant deviations in test results; 2. Sharp edge determination can only be performed at a single force (6.7N), failing to provide effective data support for edge sharpness and injury risk assessment; and 3. The testing process is not traceable, making it impossible to identify the causes of inconsistent results. Consequently, various testing laboratories have requested the development of 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 existing technology that mechanical sharp edge testing equipment can only determine sharp edges under a single force value, the test force value cannot guarantee that it meets the test requirements during the entire test process, resulting in inaccurate test results, difficult and non-traceable data reading, and the lack of methods to evaluate the sharpness of the tested edges have become urgent issues that testers in this field need to solve.

[0007] (2) 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 having a test head, wherein the test head is used to set a test tape simulating skin, wherein the test tape is used to contact the edge of the object to be tested under a force state based on a preset test force value;

[0011] A data processing component is used to continuously monitor the force data of the test head in real time during the entire test process when performing a sharp edge test, and to generate 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 test object 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 generates multiple 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 based on multiple sets of pressure value curve data, the received test results of the test tape for each set 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 value 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] The control panel further includes a control button for inputting sharp edge force test parameters into the control panel. The sharp edge force test parameters include at least a preset test force value and a comparison deviation value during the 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 to display the force data of the test head and / or the pressure value curve;

[0024] Also included is a shell;

[0025] The pressure sensor is fixedly disposed in the housing, the control panel is disposed in the housing, the display is embedded in the housing, the test rod passes through the housing, and the test head is located outside the housing;

[0026] The data processing component also includes an alarm device for issuing an alarm when the real-time monitored pressure value data 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 an object to be tested, comprising:

[0028] Step 1: Place 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. Evaluate the sharpness of the edge of the object to be tested and the risk level based on 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 zero calibration operation on the novel intelligent sharp edge tester, wherein the zero calibration operation includes a front zeroing operation and a back zeroing operation;

[0034] Alternatively, in the step one, the new intelligent sharp edge tester is further included in a zero calibration and a 6.7N force calibration operation, 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 step 3, the sharpness is divided into at least four levels according to the scratching state of the tape under an applied pressure of 6.7N, namely:

[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] Level 4 - The tape is cut and completely penetrated;

[0041] or,

[0042] In 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 - The sensing tape does not cut when the applied pressure is 6.7N to 8N, or the sensing tape cuts when the applied pressure is 9N or above, and the outer two layers of tape are penetrated, and the bottom layer of tape can be seen through the cut;

[0044] Level 2 - When the pressure is applied to 6.7N, the tape is cut, but the bottom layer of tape cannot be seen; or when the pressure is applied to 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 pressure is between 5N and 6.7N, the tape is cut and the two outer layers of tape are penetrated. The bottom layer of tape can be seen through the cut.

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

[0047] Preferably, the higher the sharpness level is, the more severe the injury caused by the measured edge is.

[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 on the outermost layer, a No. 2 sensing tape arranged on the middle layer, and an indicator tape arranged on 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, of which the backing thickness is 0.064 mm-0.089 mm. The tensile strength of the No. 1 sensing tape is 110 kN / m 2 ;

[0051] The thickness of the No. 2 sensing tape is 0.64mm-1.02mm, and the tensile strength of the No. 2 sensing tape is 379kN / 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] (3) Beneficial effects

[0055] The present invention provides a novel intelligent sharp edge tester, comprising: a test assembly having a test head for setting a test tape simulating skin, the test tape being used to contact the test head with the edge of an object under test under a force state based on a preset test force value; and a data processing assembly for continuously monitoring the force information of the test head in real time during the entire sharp edge test process and generating and displaying 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 under test during the sharp edge test meets preset requirements compared to the preset test force value. The present invention also provides a method for assessing edge sharpness.

[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 during the test 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, thereby realizing 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. This enables the present invention to be not limited to the traditional force value (6.7N) test, 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 being tested can be evaluated based on the pressure applied to the object being tested and the degree of damage to the test tape during the test. This provides a standard for the sharpness of the edge being tested and can make product requirements more standardized, helping 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 value can be collected and displayed in real time. At the same time, the collected pressure value can be stored and read to achieve data traceability.

[0062] 5. Data processing is performed on the pressure values ​​obtained during the test. Not only can the data be graphically converted into charts or curves to visualize the data and make it easier to read and understand the data, but all the data can also be divided 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 and unqualified values ​​in the total data volume is counted to determine whether the test is qualified.

[0063] 6. The present invention solves the problems in the prior art of mechanical sharp edge testing equipment, such as the inability to ensure that the test force value meets the test requirements, resulting in inaccurate test results, affecting the judgment of sharpness, and the difficulty in reading data and the lack of traceability. The present invention can realize data graphics, data storage, and data traceability. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The drawings and the accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. Among them:

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

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

[0067] A- Detachable test head; B- Test head.

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

[0069] Figure 3 This is a schematic structural diagram of the novel intelligent sharp edge tester according to an embodiment of the present invention with the display facing upwards in a state where a weight is suspended;

[0070] Figure 4 This is a schematic structural diagram of the novel intelligent sharp edge tester according to an embodiment of the present invention with the display facing downwards in a state where a weight is suspended;

[0071] Figure 5 Schematic diagram of a partial structure of a detachable test head cover provided with adhesive tape in an embodiment of the present invention.

[0072] exist Figures 2 to 5 , the corresponding relationship between component names and 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 the embodiments. Each example is provided by way of explanation of the present invention and is not intended to limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations can 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 part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompasses 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", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 should not 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 a direct connection or an indirect connection through an intermediate component. For ordinary testers in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0076] Please refer to Figures 2 to 5 ,in, Figure 2 Schematic diagram of the structure of the novel intelligent sharp edge tester in an embodiment of the present invention from a top view; Figure 3 This is a schematic structural diagram of the novel intelligent sharp edge tester according to an embodiment of the present invention with the display facing upwards in a state where a weight is suspended; Figure 4 This is a schematic structural diagram of the novel intelligent sharp edge tester according to an embodiment of the present invention with the display facing downwards in a state where a weight is suspended; Figure 5 Schematic diagram of a partial structure of a detachable test head cover 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 includes: a test component and a data processing component.

[0078] The test assembly includes a test head. The test head is provided with a test tape. The test tape can be placed on the test head, for example, by placing the test tape on a test sleeve, which is then placed on the test head; or by wrapping the test tape around the test head, although this embodiment is not limited to this. The test tape is used to simulate skin, typically 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 is typically 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; it can be a three-layer structure, for example, with a first sensing tape (or sensing tape No. 1) on the outer layer, a second sensing tape (or sensing tape No. 2) on the middle layer, and an indicator tape on the inner layer. The first sensing tape can be transparent, the second sensing tape can be white, and the indicator tape can be black. When performing a sharp edge test, the cut condition of each layer of the test tape can be determined.

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

[0080]

[0081] In the table above, the indicator tape can be a colored tape (black, red, etc.) and is placed on the bottom layer (there are three layers of tape, with the indicator tape on the bottom); the sensing tape #2 is placed in the middle layer and can be white; the sensing tape #1 is placed on the outermost layer and can be transparent. Please note that the tapes must be stored at 20±5°C.

[0082] When using this new intelligent sharp edge tester for sharp edge testing, a test head equipped with a test tape applies force to the edge of the object being tested according to a preset test force value and other requirements. The test head is then moved along the edge of the object for a preset distance. These other requirements include the time and travel distance requirements for a single test.

[0083] When using this new intelligent sharp edge tester to perform sharp edge testing, the data processing component is used to continuously monitor the force applied to the test head in real time throughout the test process and generate and display pressure curve data. This pressure curve data is used to determine whether the force applied to the edge of the test object during the sharp edge test meets the requirements, that is, whether it meets the requirements compared to the preset test force value. For example, the percentage of unqualified data in the total test data is calculated and compared to a percentage threshold. Acceptable data refers to data that is within the deviation threshold compared to the preset test force value; unqualified data refers to data that is not within the deviation threshold compared to the preset test force value. If it is determined to meet the requirements, the test process is considered qualified and can be used to determine sharp edges. If it is determined to be unqualified, the test process is considered unqualified and requires retesting. The data points in the pressure curve include test time and force value. Typically, the test time is the horizontal axis and the force value is the vertical axis. The force value is the force applied to the edge of the test object as monitored in real time. The force information from the test head represents the force applied to the edge of the object being tested. This can be configured based on actual conditions and requirements. The data processing component enables the storage and traceability of pressure 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 of the tape-coated tester 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 total 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 in 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 of 40mm in length, the tester should move along its length and then return to the original position so that the total movement distance between the test edge and the tester is 80mm, and the time is controlled in 2s to 5s.

[0085] Each test process generates a pressure curve corresponding to a preset test force. By varying the preset test force and repeatedly using this intelligent sharp edge tester to perform sharp edge tests on the object under test, multiple sets of pressure curve data are generated. These multiple sets of pressure curve data allow for a more comprehensive assessment of the sharpness of the object's edge (which can also be understood as the severity of the injury, as sharper edges indicate more severe injuries).

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

[0087]

[0088]

[0089] Furthermore, 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 table below:

[0090]

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

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

[0093] After the test process is completed, the test results of the test tape are judged, such as 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 based on multiple groups of pressure value curve data, the received test results of the test tape 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 through the 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 this tester are as follows: 1. Different test force values ​​can be set as needed; 2. The digital display screen and alarm device can help testers maintain a stable force value; 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. The hardware structure of the new intelligent sharp edge tester is as follows, including:

[0096] 1. Housing 1. Housing 1 is made of engineering plastic or other materials. Its main body is a long handle-like structure for easy gripping by personnel. A window is provided at the front end. The middle to the front end has a cavity for mounting 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. The handle can be provided with silicone to improve holding comfort. The handle has a cavity for mounting power supply assembly 4 and setting a USB port. The USB port is used for charging power supply assembly 4 and connecting to external devices (such as computers and mobile phones) to transmit and process data.

[0097] 2. Pressure sensor 5. Pressure sensor 5 is disposed within housing 1, specifically within the cavity between the center and front end of housing 1. Pressure sensor 5 is fixed within housing 1, either by bolts or by other means, as long as it remains securely positioned within 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 inside 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 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 the test rod 6 at one end outside the housing 1. The test head 7 and the test rod 6 are preferably an integrated structure, and 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 12.7 mm, the length is 19 mm, and the diameter of the test rod 6 is 6.4 mm. 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 15.9 mm. 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 is capable of receiving and processing signals. Signals received by Control Panel 2 include: a. Sharp Edge Force Test Parameter Signals entered by the operator; b. Pressure Signals acquired by Pressure Sensor 5. Signal processing by Control Panel 2 includes: a. Digital display of the pressure signal; b. Storage and traceability of the pressure signal; c. Comparison of the pressure signal with a comparison threshold; d. Graphing of the pressure signal (which can be displayed after graphing); and e. Data analysis of all pressure signals acquired during a complete test.

[0101] 6. Display 3. Display 3 is a liquid crystal display (LCD) for displaying menus, pressure values, and graphical pressure signals. Display 3 can be a touchscreen display, allowing sharp edge force test parameters to be entered via the display. Display 3 can also be a conventional LCD. The present invention further requires control buttons to be provided on the housing 1, allowing sharp edge force test parameters to be entered via the control buttons.

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

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

[0104] 9. Test tape. The test tape can be a pre-made test tape (or a detachable test head cover 9), or it can be wrapped on-site. The test tape is placed on the test head 7 and generally has three layers. The three layers of test tape should also have different colors, such as the innermost layer being black, the middle layer being white, and the outer layer being transparent. This allows for easy observation of any damage to the test tape.

[0105] The present invention provides a novel intelligent sharp edge tester. 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. During the test, the pressure value is compared with the comparison threshold in real time, 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 pressure value data obtained will be processed graphically to form charts or curves.

[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 the 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. This enables the present invention to be not limited to the traditional force value (6.7N) test, thereby expanding the test scope of the present invention and providing a basis for the assessment of 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 value can be collected and displayed in real time. At the same time, the collected pressure value can be stored and read to achieve data traceability.

[0116] 5. Data processing is performed on the pressure values ​​obtained during the test. Not only can the data be graphically converted into charts or curves to visualize the data and make it easier to read and understand the data, but all the data can also be divided into qualified values ​​and unqualified values ​​according to the set sharp edge force test parameter signal (including comparison threshold and comparison deviation value). The percentage of qualified and unqualified values ​​in the total data volume is counted to determine whether the test is qualified.

[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 1, putting a test tape onto the test head of the new intelligent sharp edge tester; step 2, entering the sharp edge force test parameters into the new intelligent sharp edge tester; step 3, pressing the test head with the test tape onto 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 based on the pressure on the test head and the degree of damage to the test tape.

[0118] Preferably, in step 1, it further includes performing a zero calibration operation on the novel intelligent sharp edge tester, and the zero calibration operation includes a front zeroing operation and a back zeroing operation.

[0119] Preferably, in step one, the new intelligent sharp edge tester is also included in zero calibration and 6.7N force calibration operations, 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.

[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 sharp edge testing 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 board 2 are used in conjunction to monitor the force applied to 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 applied to 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 new 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). The display 3 (preferably a liquid crystal display) is connected to the control board 2 by 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 on the display 3; 2. Perform data comparison, that is, pre-store or input a comparison threshold in real time. The comparison threshold value ranges from 0 to 20N. During the test process, 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 process, the pressure sensor obtains the real-time pressure of the test head and generates pressure value data, and then compares the pressure value data 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 one embodiment of the present invention, the housing 1 of the new intelligent sharp edge tester is made of engineering plastic. The display 3 is snap-mounted on the upper side of the housing 1, and the control circuit is located within the housing 1. The housing 1 is both the main structure of the invention, for mounting other components, and provides a handle for the user to grasp, facilitating use of the 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 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. The handle is a part of the structure of the shell 1, which is made of engineering plastic. The handle is a hollow cylindrical structure, and the outer side surface can be shaped. For example, according to ergonomics, a wave shape is provided at the position where the fingers hold the handle, or anti-slip corrugations are provided on the outside of the handle, or a flexible silicone layer is provided to improve the feel, etc. A power supply component 4 is provided in the handle. The power supply component 4 is a rechargeable battery, and a charging interface is provided 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, which can be configured in a variety of ways: for example, direction control buttons can be provided to control the cursor position and select control options within a control menu displayed on the display 3. Furthermore, the control circuit also provides a force indicator light that flashes when the pressure value exceeds a set pressure threshold. Alternatively, the force indicator light can be a multi-color light group that displays different colors depending on 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. The test head cover is a compliant plastic cover that is detachably mounted on the test head 7. During the test process, the test head cover contacts the test area and, after rubbing against it, determines whether the test structure is compliant based on whether it is damaged. Of course, the present invention can also affix tape to the test head cover for testing purposes.

[0127] The specific usage of the present invention is as follows: first, calibrate the tester, and then 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 during a complete test meets the settings (for example, the proportion of qualified values ​​is not less than 80%), and after the test is completed, if two layers of the test tape are torn apart, 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 during a complete test meets the settings (for example, the proportion of qualified values ​​is not less than 80%), and after the test is completed, if the test tape remains intact (or only one or two layers of tape are torn apart), 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 after it has been used for a period of time. The calibration process of the present invention is as follows: the tester is facing up, the test rod 6 is kept horizontal, and the controller controls the pressure value reading to zero. Then, the tester is facing up, the test rod 6 is kept horizontal, and the controller controls the pressure value reading to zero. Then, the tester is facing up, the weight 8 is hung, and the reading is calibrated. The tester is facing down, and the weight 8 is hung, and the reading is calibrated.

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

[0131] The present invention can demonstrate the pressure curve (or chart) of this test on liquid crystal display after detection program is completed, this pressure curve has represented the variation of pressure value in whole test program, observe pressure curve, judge the distribution (with the degree of deviation of comparison threshold value) of pressure in test process.Specifically, with comparison threshold value (or claiming preset test force value) as center line, above and below the center line, the point position of corresponding comparison deviation value (or claiming deviation threshold value) is provided with upper deviation line and lower deviation line, between upper deviation line and lower deviation line, draw pressure curve, can observe the distribution of qualified value and unqualified value in whole test process intuitively.Certainly, the present invention can also carry out data statistics by control board, for example: set comparison threshold value and comparison deviation value, the pressure value of this test collection is totally 50, by comparing and calculating, can obtain the percentage ratio of qualified value and unqualified value accounting for data total amount, thereby for this test whether qualified provides data basis.

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

[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, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A new intelligent sharp edge tester, characterized in that: include: A test assembly having a test head, wherein the test head is used to set a test tape simulating skin, wherein the test tape is used to contact the edge of the object to be tested under a force state based on a preset test force value; a data processing component for continuously monitoring the force data of the test head during the entire sharp edge test in real time and generating and displaying pressure value curve data, wherein the pressure value curve data is used to determine whether the magnitude of the force applied to the edge of the test object during the sharp edge test meets preset requirements compared with a preset test force value; The test tape has a three-layer structure: a first sensing tape on the outer layer, a second sensing tape in the middle layer, and an indicator tape on the inner layer. The first sensing tape is transparent, the second sensing tape is white, and the indicator tape is black. When performing a sharp edge test, the sharp edge condition of each layer of the test tape can be judged.

2. The novel intelligent sharp edge tester according to claim 1, characterized in that: The data processing component generates multiple 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, characterized in that: The data processing component is used to generate and display a test data distribution graph based on multiple sets of pressure value curve data, the received test results of the test tape for each set 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 value 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, 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, characterized in that: The data processing component includes a control board, which is connected to the pressure sensor signal and performs data processing; The control panel further includes a control button for inputting sharp edge force test parameters into the control panel. The sharp edge force test parameters include at least a preset test force value and a comparison deviation value during the sharp edge test.

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

7. A method for evaluating edge sharpness, characterized in that: The novel intelligent sharp edge tester according to any one of claims 1 to 6 is used to perform a sharpness test on the edge of an object to be tested, comprising: Step 1: Place 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. Evaluate the sharpness of the edge of the object to be tested and the risk level based on 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, wherein: In the step 1, it also includes performing a zero calibration operation on the novel intelligent sharp edge tester, wherein the zero calibration operation includes a front zeroing operation and a back zeroing operation; Alternatively, in the step one, the new intelligent sharp edge tester is further included in a zero calibration and a 6.7N force calibration operation, 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, wherein: In step 3, the sharpness is divided into at least four levels according to the scratching state of the tape under an applied pressure of 6.7N, namely: 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; Level 4 - The tape is cut and completely penetrated; or, In 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 - The sensing tape does not cut when the applied pressure is 6.7N to 8N, or the sensing tape cuts when the applied pressure is 9N or above, and the outer two layers of tape are penetrated, and the bottom layer of tape can be seen through the cut; Level 2 - When the pressure is applied to 6.7N, the tape is cut, but the bottom layer of tape cannot be seen; or when the pressure is applied to 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 pressure is between 5N and 6.7N, the tape is cut and the two outer layers of tape are penetrated. The bottom layer of tape can be seen through the cut. Level 4 - When the pressure is 4N to 5N, the tape is cut and the two outer layers of tape are penetrated. The bottom layer of tape can be seen through the cut. The higher the sharpness level, the more severe the injury from the measured edge.

10. The edge sharpness assessment method according to claim 7, characterized in that: The thickness of the first sensing tape is a tape with an adhesive backing, the total thickness of the first sensing tape is 0.114 mm, of which the backing thickness is 0.064 mm-0.089 mm, and the tensile strength of the first sensing tape is 110 kN / m²; The thickness of the second sensing tape is 0.64 mm -1.02 mm, and the tensile strength of the second sensing tape is 379 kN / m²; The thickness of the indicator tape is 1.14 mm to 2.03 mm, and the tensile strength of the second sensing tape is 758 kN / m²; The first sensing tape is a transparent tape, the second sensing tape is a white tape, and the indicator tape is a black tape.

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