A method, device, equipment and medium for testing the resistivity of metal materials
Patent Information
- Application Number
- CN202411960067.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-04-04
Smart Images
Figure CN119757871A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of metal material research and production, and in particular to a metal material resistivity testing method, device, equipment and medium. Background Art
[0002] With the widespread application of metal materials in the power field, the conductivity of materials has become an important reference factor in the design and manufacturing of various power equipment. Resistivity is used to represent the resistance characteristics of materials, which fundamentally reflects the conductivity of metal materials.
[0003] Therefore, in the research and production process of metal materials, it is necessary to accurately measure the resistivity. However, in the existing technology, the resistivity measured is not accurate due to problems such as the material being not firmly fixed and the equipment not being adapted to the material length. Therefore, how to simply and accurately test the resistivity of metal materials is a technical problem that needs to be solved urgently. Summary of the invention
[0004] The embodiments of the present application solve the technical problem of inaccurate resistivity measurement in the prior art by providing a method, device, equipment and medium for testing the resistivity of metal materials, thereby achieving the technical effect of simply and accurately testing the resistivity of metal materials.
[0005] In a first aspect, the present application provides a method for testing the resistivity of a metal material, which is matched with a resistivity tester, the resistivity tester comprising a first fixing member and a second fixing member arranged on the same slide rail, the method comprising:
[0006] When the test environment meets the test standard, testing the first fixing member and the second fixing member;
[0007] When the first fixing member and the second fixing member are in normal working state and the sample to be tested meets the testing standard, one end of the sample to be tested is fixed to the first fixing member, the second fixing member is slid to the other end of the sample to be tested according to the sample length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member;
[0008] Power is supplied to both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, and the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
[0009] In some embodiments of the present application, based on the above solution, the first fixing member and the second fixing member each include: a pressure detection component, a first clamp and a second clamp arranged opposite to each other; the pressure detection component is used to detect the pressure of the contact surface of the corresponding first clamp and the second clamp;
[0010] When the sample to be tested meets the test standard, one end of the sample to be tested is fixed to the first fixing member, and the second fixing member is slid to the other end of the sample to be tested according to the sample length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member, including:
[0011] When the sample to be tested meets the testing standard, the first end of the sample to be tested is placed in the relative space between the first clamp and the second clamp of the first fixing member;
[0012] Controlling the first clamp and the second clamp of the first fixing member to move toward each other until the pressure detection component of the first fixing member detects that the pressure of the contact surface between the corresponding first clamp and the second clamp reaches a preset value;
[0013] Controlling the second fixing member to slide on the slide rail along the length direction of the sample to be tested until the second end of the sample to be tested is in the relative space between the first clamp and the second clamp of the second fixing member;
[0014] The first clamp and the second clamp of the second fixing member are controlled to move toward each other until the pressure detection component of the second fixing member detects that the pressure of the corresponding contact surface of the first clamp and the second clamp reaches a preset value, thereby completing the fixation of the sample to be tested.
[0015] In some embodiments of the present application, based on the aforementioned solution, an elastic member is provided between the first clamp and the second clamp, and the elastic member is used to balance the force between the first clamp and the second clamp.
[0016] In some embodiments of the present application, based on the above solution, after the sample to be tested is fixed to the first fixing member and the second fixing member, and before power is supplied to both ends of the sample to be tested, the method further includes:
[0017] When the sample to be tested is fixed on the first fixing member and the second fixing member, a fixing signal is sent to the target device, and the target device is used to respond to the fixing signal to prompt that the sample to be tested has been fixed; the fixing signal includes at least one of a sound signal, an electrical signal and a light signal.
[0018] In some embodiments of the present application, based on the above scheme, the first fixing member and the second fixing member are both provided with a plurality of clamp groups, and the plurality of clamp groups are used to simultaneously fix a plurality of samples to be tested with different lengths and / or different cross-sectional areas, and the method includes:
[0019] Fix a plurality of samples to be tested that are made of the same metal material to corresponding fixture groups, and apply power to both ends of each sample to be tested to obtain a sample resistance value corresponding to each sample to be tested;
[0020] The sample resistivity of each sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value corresponding to each sample to be tested, and the average value of the resistivities of the multiple samples is determined as the target resistivity of the sample to be tested.
[0021] In some embodiments of the present application, based on the above scheme, power is supplied to both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, including:
[0022] A constant preset current is passed through both ends of the sample to be tested, and the sample voltage value at both ends of the sample to be tested is detected;
[0023] The sample resistance value of the sample to be tested is determined according to Ohm's law, the preset current and the sample voltage value.
[0024] In some embodiments of the present application, based on the above solution, after determining that the first fixing member and the second fixing member are in a normal working state, the method further includes:
[0025] Check the surface and tortuosity of the sample to be tested. If the surface of the sample to be tested is smooth, without bends, damage or defects, it is determined that the sample to be tested meets the test standards.
[0026] Detect the sample length of the sample to be tested, and detect the sample diameter or sample cross-sectional area of the sample to be tested.
[0027] In a second aspect, the present application provides a metal material resistivity testing device, which matches a resistivity tester. The resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail. The device includes:
[0028] A fixture detection module, used to detect the first fixture and the second fixture when the test environment meets the detection standard;
[0029] The test sample fixing module is used to fix one end of the test sample to the first fixing member, slide the second fixing member to the other end of the test sample according to the sample length of the test sample, and fix the other end of the test sample to the second fixing member when the first fixing member and the second fixing member are in normal working state and the test sample meets the test standard;
[0030] The resistivity determination module is used to energize both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, and determine the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
[0031] In a third aspect, the present application provides an electronic device, including:
[0032] processor;
[0033] a memory for storing processor-executable instructions;
[0034] The processor is configured to execute to implement a method for testing the resistivity of a metal material as provided in the first aspect.
[0035] In a fourth aspect, the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement a method for testing the resistivity of a metal material as provided in the first aspect.
[0036] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
[0037] The embodiment of the present application provides a method for testing the resistivity of a metal material, which is matched with a resistivity tester. The resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail. The method includes: when the test environment meets the detection standard, testing the first fixing member and the second fixing member; when the first fixing member and the second fixing member are in normal working state and the sample to be tested meets the detection standard, fixing one end of the sample to be tested to the first fixing member, sliding the second fixing member to the other end of the sample to be tested according to the sample length of the sample to be tested, and fixing the other end of the sample to be tested to the second fixing member; applying power to both ends of the sample to be tested, determining the sample resistance value of the sample to be tested, and determining the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested. It can be seen that the embodiment of the present application is adapted to fix samples to be tested of different lengths by setting the first fixing member and the second fixing member on the same slide rail, thereby expanding the measurement range, reducing the length requirement for the sample to be tested, and being able to meet diverse testing needs. It reduces the measurement error caused by the offset of the sample to be tested, and quickly determines the target resistivity based on the obtained sample length, sample cross-sectional area and sample resistance value data, thereby improving the efficiency, accuracy and reliability of resistivity measurement. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0039] Figure 1a A schematic diagram of the structure of a resistivity tester provided in an embodiment of the present application;
[0040] Figure 1b A schematic side view of the first fixing member or the second fixing member provided in an embodiment of the present application;
[0041] Figure 1c A schematic diagram of the top view of the sample tank provided in an embodiment of the present application;
[0042] Figure 2 A schematic diagram of a process for testing the resistivity of a metal material provided in an embodiment of the present application;
[0043] Figure 3 A schematic diagram of the structure of a metal material resistivity testing device provided in an embodiment of the present application;
[0044] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;
[0045] In the above figure: 1. base; 101. slide rail; 201. first fixing member; 202. second fixing member; 301. first clamp; 302. second clamp; 303. sample slot; 4. display control screen; 5. power supply assembly. DETAILED DESCRIPTION
[0046] The embodiment of the present application solves the technical problem of inaccurate resistivity measurement in the prior art by providing a method for testing the resistivity of a metal material.
[0047] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:
[0048] The embodiment of the present application provides a method for testing the resistivity of a metal material, which is matched with a resistivity tester. The resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail. The method includes: when the test environment meets the detection standard, testing the first fixing member and the second fixing member; when the first fixing member and the second fixing member are in normal working state and the sample to be tested meets the detection standard, fixing one end of the sample to be tested to the first fixing member, sliding the second fixing member to the other end of the sample to be tested according to the sample length of the sample to be tested, and fixing the other end of the sample to be tested to the second fixing member; applying power to both ends of the sample to be tested, determining the sample resistance value of the sample to be tested, and determining the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested. It can be seen that the embodiment of the present application is adapted to fix samples to be tested of different lengths by setting the first fixing member and the second fixing member on the same slide rail, thereby expanding the measurement range, reducing the length requirement for the sample to be tested, and being able to meet diverse testing needs. It reduces the measurement error caused by the offset of the sample to be tested, and quickly determines the target resistivity based on the obtained sample length, sample cross-sectional area and sample resistance value data, thereby improving the efficiency, accuracy and reliability of resistivity measurement.
[0049] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0050] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0051] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.
[0052] In the research and production of metal materials, resistivity testing is an important quality control link. Traditional resistivity testing is usually carried out using a resistivity tester. During the test, since the sample fixing mechanism included in the resistivity tester is not firm, it is easy for the sample to be displaced or tilted, resulting in a deviation between the actual length of the sample and the measured length, which in turn affects the calculation of resistivity. In addition, the resistivity tester can often only measure samples of fixed length and cannot adapt to samples of different lengths. Before measurement, the sample needs to be cut to meet the fixed length specifications, which increases the complexity of the measurement process.
[0053] To solve the above problems, an embodiment of the present application provides a method for testing the resistivity of a metal material, which matches the resistivity tester provided in the embodiment of the present application.
[0054] First, the resistivity tester is described in the embodiment of the present application. Figure 1a , which is a schematic diagram of the structure of a resistivity tester provided in an embodiment of the present application, includes a first fixing member 201 and a second fixing member 202. The first fixing member 201 and the second fixing member 202 are mounted on the same slide rail 101 of the base 1, and both the first fixing member 201 and the second fixing member 202 can slide along a track on the slide rail 101. A limit assembly (not shown in the figure) is also provided on the slide rail 101, and the limit assembly is used to limit the sliding position of the first fixing member 201 and the second fixing member 202, and / or limit the first fixing member 201 and the second fixing member 202 to a specific position on the slide rail 101.
[0055] Among them, the overall structure of the first fixing member 201 and the second fixing member 202 is similar, and the first fixing member 201 and the second fixing member 202 both include: a pressure detection component (not shown in the figure), a first clamp 301 and a second clamp 302 arranged opposite to each other. In this embodiment, the positional relationship of the first clamp 301 and the second clamp 302 is set to be relative to each other up and down, and in some embodiments, it can also be set to be relative to each other horizontally or in other relative positions. It is understandable that the first clamp 301 and the second clamp 302 can move toward each other in the up and down directions to clamp and fix the sample to be tested.
[0056] The pressure detection component is used to detect the pressure of the contact surface of the corresponding first clamp 301 and the second clamp 302. Preferably, the pressure detection component includes a high-precision pressure sensor, which can be respectively arranged inside the first clamp 301 and the second clamp 302 to make the detected contact surface pressure data more accurate. Exemplarily, the pressure sensor can be Honeywell FSG-15N1A, with a range of 0-15N and a resolution of 0.01N.
[0057] In order to avoid uneven distribution of the clamping force formed between the clamps on the sample to be tested, which may damage the sample to be tested, an elastic member is also provided between the first clamp 301 and the second clamp 302 to balance the force between the first clamp 301 and the second clamp 302. Since the elastic member has a certain deformation capacity and restoring force, after the sample to be tested is fixed, even if there is a slight external force or temperature change that causes a slight change in the size of the sample, the elastic member can maintain a relatively constant clamping force through its own expansion and contraction, thereby ensuring that the sample to be tested is always in a stable state during the entire test process. At the same time, the elastic member forms a pair of balancing forces on the respective forces of the first clamp 301 and the second clamp 302. The bidirectional action of the balancing force enables the two clamps to restrain each other, avoiding the problem of sample tilt or displacement caused by uneven force on one side.
[0058] Preferably, the first fixing member 201 and the second fixing member 202 are both provided with a plurality of clamp groups, each of which includes a pressure detection component, a first clamp 301 and a second clamp 302 arranged opposite to each other, and the plurality of clamp groups are used to simultaneously fix a plurality of samples to be tested with different lengths and / or cross-sectional areas. For example, Figure 1b As shown, the positional relationship of the plurality of fixture groups can be arranged to be distributed in sequence along the height direction of the fixing member.
[0059] Preferably, a sample slot 303 is further provided between the first fixing member 201 and the second fixing member 202 for placing the sample to be tested, so as to reduce the occurrence of deviation, tilt, etc. of the sample to be tested during the fixing process. Figure 1cAs shown, one end of the sample slot 303 is disposed on the first fixing member 201, and the other end is disposed on the second fixing member 202. Exemplarily, one end of the sample slot 303 is disposed on the first fixture 301 of the first fixing member 201, and the other end is disposed on the first fixture 301 of the second fixing member 202.
[0060] Preferably, the resistivity tester further includes a switch component, a power supply component 5 and a display control screen 4 .
[0061] The switch assembly (not shown in the figure) is used to start the test program. For example, the switch assembly can be set as a foot switch or a button switch with water-proof and dust-proof effects. The foot switch can be made of non-slip rubber material with a maximum load-bearing capacity of 100kg.
[0062] The power supply assembly 5 is electrically connected to the first fixing member 201 , the second fixing member 202 and the display control screen 4 , and is used for providing power.
[0063] The display control screen 4 is at least used to control the conduction to the first fixing member 201 and the second fixing member 202 or stop the conduction, and to display the resistivity of the sample to be tested after the test. Exemplarily, the screen of the display control screen 4 can be a 7-inch color LCD touch screen supporting multi-touch and a resolution of 1024x600 pixels. The built-in controller of the display control screen 4 can include an ARM Cortex-M series microprocessor with high-performance computing and low power consumption.
[0064] The following describes a method for testing the resistivity of a metal material provided in an embodiment of the present application. Figure 2 As shown, the method includes steps S1 to S3.
[0065] Step S1, when the test environment meets the test standard, test the first fixing member 201 and the second fixing member 202;
[0066] Step S2, when the first fixing member 201 and the second fixing member 202 are in normal working state and the sample to be tested meets the testing standard, one end of the sample to be tested is fixed to the first fixing member 201, and the second fixing member 202 is slid to the other end of the sample to be tested according to the sample length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member 202;
[0067] Step S3, power is supplied to both ends of the sample to be tested, the sample resistance value of the sample to be tested is determined, and the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
[0068] Regarding step S1 , when the test environment meets the test standard, the first fixing member 201 and the second fixing member 202 are tested to determine whether the first fixing member 201 and the second fixing member 202 are in a normal working state.
[0069] Since the ambient temperature and humidity have a certain influence on the resistivity of the metal conductor, it is necessary to perform the subsequent test steps S2-S3 when the ambient temperature and humidity of the test environment meet the test standards. For example, a test environment with an ambient temperature of 19°C-21°C and an ambient relative humidity of no more than 80% is determined as a test environment that meets the test standards.
[0070] Since the physical state of the sample to be tested itself easily affects the measurement of resistivity, after determining that the first fixture 201 and the second fixture 202 are in a normal working state, the method further includes steps S11 and S12.
[0071] Step S11, detecting the surface and tortuosity of the sample to be tested, and determining that the sample to be tested meets the testing standard when the surface of the sample to be tested is smooth, without bends, damages, or defects;
[0072] Step S12, detecting the sample length of the sample to be tested, and detecting the sample diameter or sample cross-sectional area of the sample to be tested.
[0073] For example, the surface and tortuosity of the sample to be tested can be detected by a laser scanning component. The laser beam emitted by the laser scanning component moves along the surface of the sample to be tested, and the reflected laser signal is analyzed to detect the flatness, smoothness, tortuosity, damage of the surface of the sample to be tested and identify other minor defects.
[0074] Regarding step S12, the sample length of the sample to be measured may be detected by a laser distance measuring component or a vernier caliper, and the sample diameter or sample cross-sectional area of the sample to be measured may be detected.
[0075] Regarding step S2, when the sample to be tested meets the testing standards, one end of the sample to be tested is fixed to the first fixing member 201, the second fixing member 202 is slid to the other end of the sample to be tested according to the length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member 202.
[0076] In the case that both the first fixture 201 and the second fixture 202 include a first clamp 301 and a second clamp 302 , step S2 further includes steps S21 to S24 .
[0077] Step S21, when the sample to be tested meets the testing standard, placing the first end of the sample to be tested in the relative space between the first clamp 301 and the second clamp 302 of the first fixing member 201;
[0078] Step S22, controlling the first clamp 301 and the second clamp 302 of the first fixing member 201 to move toward each other until the pressure detection component of the first fixing member 201 detects that the pressure of the contact surface between the first clamp 301 and the second clamp 302 reaches a preset value;
[0079] Step S23, controlling the second fixing member 202 to slide on the slide rail along the length direction of the sample to be tested until the second end of the sample to be tested is in the relative space between the first clamp 301 and the second clamp 302 of the second fixing member 202;
[0080] Step S24, controlling the first clamp 301 and the second clamp 302 of the second fixing member 202 to move toward each other until the pressure detection component of the second fixing member 202 detects that the pressure of the corresponding contact surface of the first clamp 301 and the second clamp 302 reaches a preset value, thereby completing the fixation of the sample to be tested.
[0081] After the sample to be tested is fixed to the first fixing member 201 and the second fixing member 202 and before power is supplied to both ends of the sample to be tested, the method further includes:
[0082] When the sample to be tested is fixed on the first fixing member 201 and the first fixing member 201, a fixing signal is sent to the target device, and the target device is used to respond to the fixing signal to prompt that the sample to be tested has been fixed; the fixing signal includes at least one of a sound signal, an electrical signal and a light signal.
[0083] Regarding step S3, power is supplied to both ends of the sample to be tested, the sample resistance value of the sample to be tested is determined, and the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
[0084] In the case that the first fixing member 201 and the second fixing member 202 of the resistivity tester are both provided with a plurality of clamp groups, the method further includes steps S311 to S312.
[0085] Step S311, fixing multiple samples to be tested that are made of the same metal material to corresponding fixture groups, applying power to both ends of each sample to be tested, and obtaining a sample resistance value corresponding to each sample to be tested;
[0086] Step S312, determining the sample resistivity of each sample to be tested according to the sample length, sample cross-sectional area and sample resistance value corresponding to each sample to be tested, and determining the average value of the multiple sample resistivities as the target resistivity of the sample to be tested.
[0087] As attached Figure 1bAs shown, the first ends of a plurality of samples to be tested that are made of the same metal material are placed in the relative space between the first clamp 301 and the second clamp 302 corresponding to each clamp group of the first fixing member 201; the first clamp 301 and the second clamp 302 of each clamp group of the first fixing member 201 are controlled to move toward each other until the pressure detection component of the corresponding clamp group detects that the pressure of the contact surface of the corresponding first clamp 301 and the second clamp 302 reaches a preset value; thereby completing the fixation of the first end of the sample to be tested.
[0088] The second fixing member 202 is controlled to slide on the slide rail along the length direction of the sample to be tested until the second end of each sample to be tested is located in the relative space between the first clamp 301 and the second clamp 302 in the corresponding clamp group of the second fixing member 202 .
[0089] Then, the first clamp 301 and the second clamp 302 of each clamp group of the second fixing member 202 are controlled to move toward each other until the pressure detection component of the corresponding clamp group detects that the pressure of the contact surface of the corresponding first clamp 301 and the second clamp 302 reaches a preset value, thereby completing the fixation of the second end of the sample to be tested.
[0090] There are at least differences in length and / or cross-sectional area between the samples to be tested fixed by each fixture group. By using multiple fixture groups to simultaneously test the sample resistivity of each sample to be tested, the detection efficiency can be improved. The average value of the resistivity of multiple samples is determined as the target resistivity of the sample to be tested, so as to improve the accuracy of the resistivity and reduce the measurement error caused by individual differences.
[0091] Regarding step S3, power is supplied to both ends of the sample to be tested, the sample resistance value of the sample to be tested is determined, and the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested. Determining the sample resistance value of the sample to be tested also includes steps S321-S322.
[0092] Step S321, passing a constant preset current through both ends of the sample to be tested, and detecting the sample voltage value at both ends of the sample to be tested;
[0093] Step S322, determining the sample resistance value of the sample to be tested according to Ohm's law, the preset current and the sample voltage value.
[0094] Regarding step S322, the sample resistance value of the sample to be tested is determined according to Ohm's law, the preset current and the sample voltage value, which can be achieved by formula (1).
[0095] R=U / I; (1)
[0096] Wherein, U is the sample voltage value, I is the preset current, and R is the sample resistance value.
[0097] After the sample resistance value of the sample to be tested is determined, the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested, which can be achieved by formula (2).
[0098]
[0099] Where R is the sample resistance value, L is the sample length, A is the sample cross-sectional area, and ρ is the target resistivity.
[0100] In summary, the embodiment of the present application provides a method for testing the resistivity of a metal material, which is matched with a resistivity tester. The resistivity tester includes a first fixing member 201 and a second fixing member 202 arranged on the same slide rail 101. The method includes: when the test environment meets the detection standard, detecting the first fixing member 201 and the second fixing member 202 to determine that the first fixing member 201 and the second fixing member 202 are in a normal working state; when the sample to be tested meets the detection standard, fixing one end of the sample to be tested to the first fixing member 201, sliding the second fixing member 202 to the other end of the sample to be tested according to the sample length of the sample to be tested, and fixing the other end of the sample to be tested to the second fixing member 202; applying power to both ends of the sample to be tested, determining the sample resistance value of the sample to be tested, and determining the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested. It can be seen that the embodiment of the present application is adapted to fix the samples to be tested of different lengths by setting the first fixing member 201 and the second fixing member 202 on the same slide rail, thereby expanding the measurement range, reducing the length requirement for the samples to be tested, and being able to meet diverse testing needs. It reduces the measurement error caused by the offset of the samples to be tested, and quickly determines the target resistivity based on the obtained sample length, sample cross-sectional area and sample resistance value data, thereby improving the efficiency, accuracy and reliability of resistivity measurement.
[0101] Based on the same inventive concept, the present application provides Figure 3 A metal material resistivity test device is shown, which matches a resistivity tester. The resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail. The device includes:
[0102] A fixture detection module 31, used to detect the first fixture 201 and the second fixture 202 when the test environment meets the detection standard;
[0103] The sample fixing module 32 is used to fix one end of the sample to be tested to the first fixing member 201 when the first fixing member 201 and the second fixing member 202 are in normal working state and the sample to be tested meets the testing standard, slide the second fixing member 202 to the other end of the sample to be tested according to the sample length of the sample to be tested, and fix the other end of the sample to be tested to the second fixing member 202;
[0104] The resistivity determination module 33 is used to energize both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, and determine the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
[0105] Preferably, the device further comprises a fixture fixing module, which is used for:
[0106] When the sample to be tested meets the testing standard, the first end of the sample to be tested is placed in the relative space between the first clamp 301 and the second clamp 302 of the first fixing member 201;
[0107] Control the first clamp 301 and the second clamp 302 of the first fixing member 201 to move toward each other until the pressure detection component of the first fixing member 201 detects that the pressure of the contact surface between the first clamp 301 and the second clamp 302 reaches a preset value;
[0108] Control the second fixing member 202 to slide on the slide rail along the length direction of the sample to be tested until the second end of the sample to be tested is in the relative space between the first clamp 301 and the second clamp 302 of the second fixing member 202;
[0109] The first clamp 301 and the second clamp 302 of the second fixing member 202 are controlled to move toward each other until the pressure detection component of the second fixing member 202 detects that the pressure of the corresponding contact surface of the first clamp 301 and the second clamp 302 reaches a preset value, thereby completing the fixation of the sample to be tested.
[0110] Preferably, the device further comprises a fixed signal sending module, which is used to:
[0111] When the sample to be tested is fixed on the first fixing member 201 and the first fixing member 201, a fixing signal is sent to the target device, and the target device is used to respond to the fixing signal to prompt that the sample to be tested has been fixed; the fixing signal includes at least one of a sound signal, an electrical signal and a light signal.
[0112] Preferably, the device further comprises a multi-sample testing module, which is used for:
[0113] Fix a plurality of samples to be tested that are made of the same metal material to corresponding fixture groups, and apply power to both ends of each sample to be tested to obtain a sample resistance value corresponding to each sample to be tested;
[0114] The sample resistivity of each sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value corresponding to each sample to be tested, and the average value of the resistivities of the multiple samples is determined as the target resistivity of the sample to be tested.
[0115] Preferably, the device further comprises a sample resistance value determination module, which is used to:
[0116] A constant preset current is passed through both ends of the sample to be tested, and the sample voltage value at both ends of the sample to be tested is detected;
[0117] The sample resistance value of the sample to be tested is determined according to Ohm's law, the preset current and the sample voltage value.
[0118] Preferably, the device further comprises a sample detection module for:
[0119] Check the surface and tortuosity of the sample to be tested. If the surface of the sample to be tested is smooth, without bends, damage or defects, it is determined that the sample to be tested meets the test standards.
[0120] Detect the sample length of the sample to be tested, and detect the sample diameter or sample cross-sectional area of the sample to be tested.
[0121] Based on the same inventive concept, the present application provides Figure 4 An electronic device as shown includes:
[0122] Processor 41;
[0123] A memory 42 for storing instructions executable by the processor 41;
[0124] The processor 41 is configured to execute to implement a metal material resistivity testing method as provided above.
[0125] Based on the same inventive concept, the present application provides a non-temporary computer-readable storage medium. When the instructions in the storage medium are executed by the processor 41 of the electronic device, the electronic device can execute a method for testing the resistivity of a metal material as provided above.
[0126] Since the electronic device introduced in this embodiment is an electronic device used to implement the information processing method in the embodiment of the present application, based on the information processing method introduced in the embodiment of the present application, a person skilled in the art can understand the specific implementation of the electronic device of the present embodiment and its various variations, so how the electronic device implements the method in the embodiment of the present application is not described in detail here. As long as a person skilled in the art implements the electronic device used by the information processing method in the embodiment of the present application, it belongs to the scope of protection of this application.
[0127] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0128] The present invention is described with reference to the flowchart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present invention. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the process and / or box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.
[0129] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.
[0130] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.
[0131] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.
[0132] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A method for testing the resistivity of a metal material, characterized in that: Matching with a resistivity tester, the resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail, and the method includes: In the case where the test environment meets the test standard, testing the first fixing member and the second fixing member; When the first fixing member and the second fixing member are in normal working state and the sample to be tested meets the testing standard, one end of the sample to be tested is fixed to the first fixing member, and the second fixing member is slid to the other end of the sample to be tested according to the sample length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member; Power is supplied to both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, and the target resistivity of the sample to be tested is determined according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
2. The method for testing the resistivity of a metal material according to claim 1, characterized in that: The first fixing member and the second fixing member each include: a pressure detection component, a first clamp and a second clamp arranged opposite to each other; the pressure detection component is used to detect the pressure of the corresponding contact surface of the first clamp and the second clamp; When the sample to be tested meets the testing standard, one end of the sample to be tested is fixed to the first fixing member, and the second fixing member is slid to the other end of the sample to be tested according to the sample length of the sample to be tested, and the other end of the sample to be tested is fixed to the second fixing member, including: When the sample to be tested meets the testing standard, placing the first end of the sample to be tested in the relative space between the first clamp and the second clamp of the first fixing member; Controlling the first clamp and the second clamp of the first fixing member to move toward each other until the pressure detection component of the first fixing member detects that the pressure of the contact surface between the first clamp and the second clamp reaches a preset value; Controlling the second fixing member to slide on the slide rail along the length direction of the sample to be tested until the second end of the sample to be tested is located in the relative space between the first clamp and the second clamp of the second fixing member; The first clamp and the second clamp of the second fixing member are controlled to move toward each other until the pressure detection component of the second fixing member detects that the pressure of the corresponding contact surface of the first clamp and the second clamp reaches a preset value, thereby completing the fixation of the sample to be tested.
3. The method for testing the resistivity of a metal material as claimed in claim 2, characterized in that: An elastic member is disposed between the first clamp and the second clamp, and the elastic member is used to balance the acting force between the first clamp and the second clamp.
4. The method for testing the resistivity of a metal material according to claim 1, wherein: After the sample to be tested is fixed to the first fixing member and the second fixing member, and before power is supplied to both ends of the sample to be tested, the method further includes: When the sample to be tested is fixed on the first fixing member and the second fixing member, a fixing signal is sent to a target device, and the target device is used to respond to the fixing signal to prompt that the sample to be tested has been fixed; the fixing signal includes at least one of a sound signal, an electrical signal and a light signal.
5. The method for testing the resistivity of a metal material according to claim 1, wherein: The first fixing member and the second fixing member are both provided with a plurality of clamp groups, and the plurality of clamp groups are used to simultaneously fix a plurality of samples to be tested having different lengths and / or different cross-sectional areas, and the method comprises: Fixing a plurality of the samples to be tested that are made of the same metal material to the corresponding fixture groups respectively, applying power to both ends of each of the samples to be tested, and obtaining the sample resistance value corresponding to each of the samples to be tested; The sample resistivity of each of the samples to be tested is determined according to the sample length, the sample cross-sectional area and the sample resistance value corresponding to each of the samples to be tested, and an average value of the multiple sample resistivities is determined as the target resistivity of the sample to be tested.
6. The method for testing the resistivity of a metal material according to claim 1, wherein: The step of applying power to both ends of the sample to be tested to determine the sample resistance value of the sample to be tested includes: Passing a constant preset current into the sample to be tested, and detecting a sample voltage value at both ends of the sample to be tested; The sample resistance value of the sample to be tested is determined according to Ohm's law, the preset current and the sample voltage value.
7. The method for testing the resistivity of a metal material according to claim 1, wherein: After determining that the first fixing member and the second fixing member are in a normal working state, the method further includes: Detecting the surface and tortuosity of the sample to be tested, and determining that the sample to be tested meets the testing standard when the surface of the sample to be tested is smooth, without bends, damages, and defects; The sample length of the sample to be tested is detected, and the sample diameter or the sample cross-sectional area of the sample to be tested is detected.
8. A device for testing the resistivity of a metal material, characterized in that: Matching with a resistivity tester, the resistivity tester includes a first fixing member and a second fixing member arranged on the same slide rail, and the device includes: A fixture detection module, used to detect the first fixture and the second fixture when the test environment meets the detection standard; A test sample fixing module, used for fixing one end of the test sample to the first fixing member, sliding the second fixing member to the other end of the test sample according to the sample length of the test sample, and fixing the other end of the test sample to the second fixing member when the first fixing member and the second fixing member are in normal working state and the test sample meets the test standard; The resistivity determination module is used to energize both ends of the sample to be tested to determine the sample resistance value of the sample to be tested, and determine the target resistivity of the sample to be tested according to the sample length, sample cross-sectional area and sample resistance value of the sample to be tested.
9. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute a method for testing the resistivity of a metal material as claimed in any one of claims 1 to 7.
10. A non-transitory computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to implement a method for testing the resistivity of a metal material as claimed in any one of claims 1 to 7.