Portable conductive yarn resistance testing method

Abstract

The invention discloses a portable conductive yarn resistance testing method, and relates to the technical field of functional textile, and the method comprises the steps: employing a conductive yarn tensioning device to control the state of a conductive yarn to be a tensioning state; then selecting a conductive yarn with a preset length, and electrically connecting the conductive yarn with a resistance tester through a conductive yarn fixing electrode arranged on a conductive yarn tensioning device; finally, the resistance value of the conductive yarn with the preset length is obtained through measurement of a resistance tester. When the resistance of the conductive yarn needs to be tested, the conductive yarn passes through the conductive yarn tensioning device, so that the conductive yarn is in a straightened state. Then, two groups of conductive yarn fixing electrodes are adopted to fix a part needing to be tested, and finally, the resistance of the conductive yarn is tested through a resistance tester. Through the conductive yarn tensioning device, the conductive yarn is in a stable tensioning state during testing, so that the accuracy of resistance testing of the conductive yarn is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of functional textile technology, in particular to a portable conductive yarn resistance testing method. BACKGROUND

[0002] Conductive yarn has a wide range of applications in the fields of antistatic, electric porcelain shielding, heating and sensing due to its excellent conductivity, flexibility and weavability. With the rapid expansion of conductive textile production and application, the conductivity of conductive yarn has become the focus of the industry. As the core material of functional textiles, the resistance value of conductive yarn is directly related to the performance stability, safety and reliability of the product, and is of great significance in quality control, performance evaluation, process optimization and cost control.

[0003] In traditional technology, the resistance detection of conductive yarn cannot fully reflect the quality of the yarn, especially in the field of precision textiles, which is prone to missed detection and misjudgment. Chinese patent CN106990293B discloses a resistance detection method and device for conductive yarn, which winds a whole conductive yarn sample on an insulator rectangular plate, so that the wound conductive yarn forms multiple yarn segments in parallel on one side of the insulator rectangular plate. Not only can the resistance value of the whole conductive yarn be conveniently detected, but also the parallel resistance value of a group of conductive yarns can be conveniently detected. Chinese patent CN118962244A discloses a conductive performance testing device and method for conductive yarn, the sample holder can be accommodated inside the shielding box, and the sample holder is provided with a clamping assembly, which clamps and fixes the two ends of the sample plate wound with the conductive yarn.

[0004] Both of the above-mentioned conductive performance testing methods for conductive yarn can realize the testing of the conductive performance of conductive yarn. However, whether the conductive yarn sample is wound on an insulator rectangular plate or a clamping assembly is used to fix the conductive yarn, the problem of unstable tension of the conductive yarn during measurement will occur, thereby affecting the testing accuracy. SUMMARY

[0005] In order to solve the above technical problems, the present application provides the following technical solutions: In a first aspect, the present application provides a portable conductive yarn resistance testing method, comprising: adopting a conductive yarn tensioning device to control the state of the conductive yarn to be tested to be in a tensioned state; then selecting a conductive yarn of a preset length to be electrically connected to the resistance tester through the conductive yarn fixing electrode provided on the conductive yarn tensioning device; finally, measuring the resistance value of the conductive yarn of the preset length by the resistance tester.

[0006] In a possible implementation, the electrically conductive yarn tensioning device comprises: an insulating base plate arranged at the top of the electric resistance tester, a first end of the insulating base plate is fixedly provided with a yarn guide porcelain head, and a second end of the insulating base plate is provided with an electrically conductive yarn tensioning mechanism; the electrically conductive yarn fixing electrode is provided with two groups and is arranged at positions close to the two ends of the insulating base plate respectively.

[0007] In a possible implementation, the electrically conductive yarn fixing electrode comprises a convex base fixed on the insulating base plate, a fixed pressing piece matched with the convex base, the convex base and the fixed pressing piece are connected through a fixed bolt, and the convex base and the fixed pressing piece are made of a high-conductivity metal material with a resistivity less than or equal to 1.724*10⁻ 8 Ω·m.

[0008] In a possible implementation, the electrically conductive yarn tensioning mechanism comprises a guide wheel fixed at the second end of the insulating base plate and a yarn holder arranged adjacent to the guide wheel, and a counterweight matched with the guide wheel and the yarn holder; after the electrically conductive yarn is fixed in the yarn holder, the counterweight is used to tension the electrically conductive yarn, and a hook is fixed at the top of the counterweight.

[0009] In a possible implementation, the yarn holder comprises a rotating porcelain head, a first clamping piece fixed at one end of the rotating porcelain head, and a second clamping piece in sliding connection with the rotating porcelain head, a compression spring is arranged between the second clamping piece and a fixed connecting plate, one end of the compression spring is fixedly connected with the second clamping piece, and the other end is fixedly connected with the fixed connecting plate.

[0010] In a possible implementation, a through hole is arranged in the middle of the rotating porcelain head, and a pressure adjusting screw is in threaded connection with the fixed connecting plate through the through hole and the compression spring.

[0011] In a possible implementation, the electric resistance tester is provided with a numerical display screen, a power switch, a decimal point selection knob, a range switching knob, a power input end and a resistance test end, the power input end is electrically connected with an external direct current power supply, and the resistance test end is electrically connected with the electrically conductive yarn fixing electrode.

[0012] In a possible implementation, the electrically conductive yarn tensioning device is used to control the state of the electrically conductive yarn to be tested to be in a tensioned state, which comprises: After the electrically conductive yarn is unwound and passes through the yarn guide porcelain head, the front end electrically conductive yarn fixing electrode, the rear end electrically conductive yarn fixing electrode, the guide wheel and the yarn holder, the front end electrically conductive yarn fixing electrode is fastened through a bolt; After the counterweight is hung on the yarn between the guide wheel and the yarn holder, the rear fixed electrode bolt of the conductive yarn is fastened, and the conductive yarn is in a tension state of a set tension.

[0013] In a possible implementation, the then selected preset length of the conductive yarn is electrically connected to the resistance tester through the conductive yarn fixed electrode arranged on the conductive yarn tensioning device, and the method comprises the following steps of: The length of the conductive yarn to be tested is selected through the distance between the front conductive yarn fixed electrode and the rear conductive yarn fixed electrode. The conductive yarn fixed electrode and the rear conductive yarn fixed electrode are respectively electrically connected to the resistance test end of the resistance tester through wires.

[0014] In a possible implementation, the resistance value of the preset length of the conductive yarn is measured by the resistance tester, and the method comprises the following steps of: The power switch of the resistance tester is turned on, and the decimal point bit and the range bit are adjusted to the corresponding scales through the decimal point selection knob and the range switching knob according to the numerical value display screen. The average value obtained after repeated testing for a set number of times is the test resistance value of the preset length of the conductive yarn.

[0015] In the embodiment, when the resistance of the conductive yarn needs to be tested, the conductive yarn is in a straightened state through the conductive yarn tensioning device. Then, the part to be tested is fixed by the two groups of conductive yarn fixed electrodes, and finally the resistance of the conductive yarn is tested by the resistance tester. The conductive yarn is in a stable tension state during the test through the conductive yarn tensioning device, thereby improving the accuracy of the resistance test of the conductive yarn. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A flowchart of a portable conductive yarn resistance test method provided in the embodiment is shown in the figure. Figure 2 A structural diagram of a portable conductive yarn resistance test device provided in the embodiment is shown in the figure. Figure 3 A structural diagram of a conductive yarn fixed electrode provided in the embodiment is shown in the figure. Figure 4 A structural diagram of a yarn holder provided in the embodiment is shown in the figure. Figure 5 A physical diagram of a yarn holder provided in the embodiment is shown in the figure. Figure 6 An internal structural diagram of a resistance tester provided in the embodiment is shown in the figure. Figures 1-6 In the formula, the symbol represents: 1-resistance tester, 2-conductive yarn fixed electrode, 3-conductive yarn, 4-insulating base plate, 5-yarn guide porcelain head, 6-convex-shaped base, 7-fixed pressing piece, 8-fixed bolt, 9-guide wheel, 10-yarn holder, 11-counterweight weight, 12-rotary porcelain head, 13-first clamping piece, 14-second clamping piece, 15-fixed connecting plate, 16-pressing spring, 17-pressure adjusting screw, 18-display screen, 19-power switch, 20-decimal point selection knob, 21-range switching knob, 22-power input end, 23-resistance test end. DETAILED DESCRIPTION

[0017] The present application will be described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Referring to Figure 1 , the portable conductive yarn resistance testing method in the embodiment comprises: S101, using a conductive yarn tensioning device to control the state of the conductive yarn to be tested to be in a tensioned state.

[0019] Referring to Figure 2 , the portable conductive yarn resistance testing device provided by the embodiment comprises: a resistance tester 1, a conductive yarn tensioning device arranged on the top of the resistance tester 1, two groups of conductive yarn fixed electrodes 2 arranged on the conductive yarn tensioning device, and the conductive yarn fixed electrodes 2 being electrically connected with the resistance tester 1; when conducting resistance testing of the conductive yarn 3, the conductive yarn fixed electrodes 2 are used to fix the measured section of the conductive yarn 3 after tensioning.

[0020] As shown in Figure 2 , the conductive yarn tensioning device comprises an insulating base plate 4 arranged on the top of the resistance tester 1; a yarn guide porcelain head 5 is fixedly arranged at the first end of the insulating base plate 4, and a conductive yarn tensioning mechanism is arranged at the second end of the insulating base plate 4; two conductive yarn fixed electrodes 2 are arranged at positions close to the two ends of the insulating base plate 4. The yarn guide porcelain head 5 is used to guide the conductive yarn 3 to smoothly pass through the test path, and the tensioning of the conductive yarn 3 is realized through the conductive yarn tensioning mechanism after passing through the two conductive yarn fixed electrodes 2.

[0021] Referring to Figure 3 , the conductive yarn fixed electrode 2 comprises a convex-shaped base 6 fixed on the insulating base plate 4, a fixed pressing piece 7 matched with the convex-shaped base 6, and the convex-shaped base 6 and the fixed pressing piece 7 are connected through a fixed bolt 8. When the conductive yarn 3 is in a tensioned state, the fixed pressing piece 7 is used to press the conductive yarn 3 on the convex-shaped base 6, and the conductive yarn 3 is fixed through the fixed bolt 8. The resistance value measurement of the fixed length conductive yarn 3 is realized through the two conductive yarn fixed electrodes 2.

[0022] In this embodiment, the convex-shaped base 6 and the fixed pressing piece 7 are conductive metal material structural members. Specifically, the convex-shaped base 6 and the fixed pressing piece 7 are made of red copper material, and the conductive yarn fixed electrode 2 made of red copper material is used to fix the conductive yarn 3, thereby ensuring low contact resistance of the conductive yarn 3.

[0023] Further referring to Figure 2 , the conductive yarn tensioning mechanism comprises a guide wheel 9 fixed at the second end of the insulating base plate 4 and a yarn holder 10 arranged adjacent to the guide wheel 9, and a counterweight 11 used in cooperation with the guide wheel 9 and the yarn holder 10; after the conductive yarn 3 is fixed at the yarn holder 10, the counterweight 11 is used to tension the conductive yarn 3. The guide wheel 9 realizes the guidance of the conductive yarn 3, and the yarn holder 10 realizes the fixation of the conductive yarn 3, and the counterweight 11 provides constant tension to the conductive yarn 3. In this embodiment, a hook (not shown in the figure) is fixed at the top of the counterweight 11, so as to facilitate the suspension of the counterweight 11 on the conductive yarn 3.

[0024] Referring to Figure 4 and Figure 5 , the yarn holder 10 comprises a rotating porcelain head 12, a first clamping piece 13 fixed at one end of the rotating porcelain head 12, and a second clamping piece 14 in sliding connection with the rotating porcelain head 12, and a compression spring 16 arranged between the second clamping piece 14 and a fixed connecting plate 15, one end of the compression spring 16 being fixedly connected with the second clamping piece 14, and the other end being fixedly connected with the fixed connecting plate 15. The conductive yarn 3 is wound on the rotating porcelain head 12 between the first clamping piece 13 and the second clamping piece 14, and then the conductive yarn 3 is fixedly pressed by the compression spring 16.

[0025] In this embodiment, a through hole is arranged in the middle of the rotating porcelain head 12, and a pressure adjusting screw 17 is screwed with the fixed connecting plate 15 through the through hole and the compression spring 16. The elastic pressure of the compression spring 16 can be adjusted by rotating the pressure adjusting screw 17.

[0026] Specifically, after the conductive yarn 3 is unwound and passes through the yarn guide porcelain head, the front end conductive yarn fixed electrode 2, the rear end conductive yarn fixed electrode 2, the guide wheel 9 and the yarn holder 10, the front end conductive yarn fixed electrode 2 is bolted and fixed, and after the counterweight 11 is hung on the yarn between the guide wheel 9 and the yarn holder 10, the rear end conductive yarn fixed electrode 2 is bolted and fixed, at this time the conductive yarn 3 is in a tensioned state of the set tension.

[0027] S102, then select a conductive yarn of a preset length to be electrically connected with the resistance tester through the conductive yarn fixed electrode arranged on the conductive yarn tensioning device.

[0028] Referring to Figure 6 , the resistance tester 1 further comprises a power input end 22 and a resistance test end 23, the power input end 22 is electrically connected with an external DC power supply, the DC power supply is a 5V DC power supply, which is a rechargeable mobile power supply, configured to enhance the portability of the device. The resistance test end 23 is electrically connected with the conductive yarn fixed electrode 2. Specifically, in the embodiment, the resistance test end 23 and the conductive yarn fixed electrode 2 are connected by wires.

[0029] In the embodiment, the distance between the front and rear conductive yarn fixed electrodes 2 is 10 cm, and by pressing the conductive yarn between the two conductive yarn fixed electrodes 2, the part to be measured is selected. Then, the two conductive yarn fixed electrodes 2 are connected to the resistance test end 23 of the resistance tester 1 by wires.

[0030] S103, finally, the resistance value of the conductive yarn with the preset length is obtained by measuring with the resistance tester.

[0031] Further referring to Figure 1 , in the embodiment, the resistance tester 1 is provided with a numerical display screen 18, a power switch 19, a decimal point selection knob 20 and a range switching knob 21. In the embodiment, the range of the resistance tester 1 is 0 ohm to 19.99 megohm, which is divided into 6 ranges. Range 1: 0-199.9Ω, 2: 0-1.999KΩ, 3: 0-19.99KΩ, 4: 0-199.9KΩ, 5: 0-1.999MΩ, 6: 0-19.99MΩ. The measurement accuracy is ±0.5%, and the decimal point accuracy can reach three decimal places.

[0032] Turn on the power switch 19 of the resistance tester 1, and according to the numerical display screen 18, adjust the decimal point position and range position to the corresponding scale by the decimal point selection knob 20 and the range switching knob 21; the value displayed on the numerical display screen 18 is the resistance value of the conductive yarn 10 cm. Therefore, the average value obtained by repeating the test for a certain number of times is the test resistance value of the conductive yarn 10 cm.

[0033] In the embodiments of the present application, "at least one" refers to one or more, and "multiple" refers to two or two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Wherein A, B can be singular or plural. The character " / " generally represents that the associated objects before and after are in an "or" relationship. "At least one of the following" and the like means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple.

[0034] The above description is only a specific embodiment of the present application, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A portable method for testing the resistance of conductive yarn, characterized in that, include: A conductive yarn tensioning device is used to control the state of the conductive yarn to be tested to be in a tensioned state. Then, a selected conductive yarn of a preset length is electrically connected to the resistance tester via the conductive yarn fixing electrode set on the conductive yarn tensioning device. Finally, the resistance value of the conductive yarn of the preset length is obtained by measuring with a resistance tester.

2. The portable conductive yarn resistance testing method according to claim 1, characterized in that, The conductive yarn tensioning device includes: an insulating base plate set on the top of the resistance tester; a yarn guiding ceramic head fixedly set at the first end of the insulating base plate; and a conductive yarn tensioning mechanism set at the second end of the insulating base plate; and two sets of conductive yarn fixing electrodes set at positions near both ends of the insulating base plate.

3. The portable conductive yarn resistance testing method according to claim 2, characterized in that, The conductive yarn fixing electrode includes a convex-shaped base fixed to the insulating base plate, and a fixing pressure member matching the convex-shaped base. The convex-shaped base and the fixing pressure member are connected by fixing bolts. The convex-shaped base and the fixing pressure member have a resistivity of less than or equal to 1.724 × 10⁻⁻⁻⁶. 8 Made of a highly conductive metal material with an Ω·m conductivity.

4. The portable conductive yarn resistance testing method according to claim 2, characterized in that, The conductive yarn tensioning mechanism includes a guide wheel fixed to the second end of the insulating base plate and a yarn holder disposed adjacent to the guide wheel, and a counterweight used in conjunction with the guide wheel and the yarn holder; after the conductive yarn is fixed by the yarn holder, the counterweight is used to tension the conductive yarn, and a hook is fixedly disposed on the top of the counterweight.

5. The portable conductive yarn resistance testing method according to claim 4, characterized in that, The yarn holder includes a rotating ceramic head, a first clamping piece fixed to one end of the rotating ceramic head, and a second clamping piece slidably connected to the rotating ceramic head. A compression spring is provided between the second clamping piece and the fixed connecting plate. One end of the compression spring is fixedly connected to the second clamping piece, and the other end is fixedly connected to the fixed connecting plate.

6. The portable conductive yarn resistance testing method according to claim 5, characterized in that, The rotating ceramic head has a through hole in the middle, and the pressure adjusting screw passes through the through hole and the clamping spring and is threadedly connected to the fixed connecting plate.

7. The portable conductive yarn resistance testing method according to claim 6, characterized in that, The resistance tester is equipped with a numerical display screen, a power switch, a decimal point selection knob, a range switching knob, a power input terminal, and a resistance testing terminal. The power input terminal is electrically connected to an external DC power supply, and the resistance testing terminal is electrically connected to the conductive yarn fixed electrode.

8. The portable conductive yarn resistance testing method according to claim 7, characterized in that, The method of using a conductive yarn tensioning device to control the state of the conductive yarn to be tested to a tensioned state includes: After the conductive yarn is unwound, it passes through the guide ceramic head, the front conductive yarn fixing electrode, the rear conductive yarn fixing electrode, the guide wheel and the yarn holder, and then the front conductive yarn fixing electrode bolt is tightened. After the counterweight is hung on the yarn between the guide wheel and the yarn holder, the bolts of the rear conductive yarn fixing electrode are tightened. At this time, the conductive yarn is under the set tension.

9. The portable conductive yarn resistance testing method according to claim 7, characterized in that, The step of selecting a preset length of conductive yarn and then electrically connecting it to the resistance tester via conductive yarn fixing electrodes on the conductive yarn tensioning device includes: The length of the conductive yarn to be tested is selected by the distance between the front conductive yarn fixing electrode and the rear conductive yarn fixing electrode. The conductive yarn fixing electrode and the rear conductive yarn are respectively fixed to the resistance test terminal of the resistance tester by wires.

10. The portable conductive yarn resistance testing method according to claim 7, characterized in that, The final step of measuring the resistance value of the conductive yarn of a preset length using a resistance tester includes: Turn on the power switch of the resistance tester. According to the numerical display, use the decimal point selection knob and the range switching knob to adjust the decimal place and range to the corresponding scale. The average value obtained after repeating the test a set number of times is the test resistance value of the conductive yarn of the preset length.

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