Straight grid and inclined grid combined strain gauge structure

Abstract

The utility model discloses a straight grid and inclined grid combined strain gauge structure, and belongs to the technical field of strain gauges. The device mainly comprises a substrate, and at least four groups of pasting positioning points are arranged on the substrate; the wire grid assembly is arranged at the top of the substrate, the wire grid assembly comprises a first wire grid, the first wire grid is located on the left side of the substrate, and the first wire grid comprises a single vertical grid and a single transverse grid; the second wire grid is arranged on one side of the first wire grid, and the second wire grid is a rightward inclined single inclined grid; the third wire grid is arranged on one side of the second wire grid, and the third wire grid is a left-inclined monoinclined grid; the fourth wire grid is arranged on one side of the third wire grid, and the fourth wire grid is a single vertical grid. According to the straight grid and inclined grid combined strain gauge structure, by combining the design of the straight grid and the inclined grid, the effect of multi-dimensional force can be measured more accurately, and the design of the wire grids in different directions can capture and reflect various acting forces, so that a more accurate measurement result is provided.

Description

Technical Field

[0001] The present application relates to the technical field of strain gauges, and in particular to a straight-grid and inclined-grid combined strain gauge structure. Background Art

[0002] A strain gauge is a sensor used to measure the strain on the surface of an object. It is usually a thin sheet or film that can be pasted or fixed on the surface of the object where the strain needs to be measured. When an object is subjected to force or pressure, the shape of the object will change slightly. The strain gauge can detect this change and convert it into an electrical signal.

[0003] However, in the existing strain gauge design, most of them only use a single straight piece or a single oblique piece. As multi-dimensional force testing tends to be more and more high-precision, the linear capacity of a single straight piece and a single oblique piece is limited. The linear performance of traditional single straight piece and single oblique piece strain gauges is limited under high-precision requirements and may not provide sufficient accuracy to accurately measure complex strain conditions.

[0004] And because a single straight plate or a single oblique plate may not cover all directions that need to be measured, a large number of strain gauges may be required in multi-dimensional force testing, which may cause the strain gauges to occupy a larger space, require a larger number and have a higher cost, which will cause the test device to occupy more space and limit the ability to perform accurate measurements in complex structures. Therefore, it is necessary to provide a straight-grid and oblique-grid combined strain gauge structure with both a single straight plate and a single oblique plate to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a straight-grid and inclined-grid combined strain gauge structure, so as to achieve the effect of more accurately measuring multi-dimensional forces and improving the measurement accuracy of the sensor.

[0007] The technical solution adopted by the present application to solve its technical problems is: a straight-grid and oblique-grid combined strain gauge structure, including a substrate, on which at least four groups of pasting positioning points are arranged; a wire grid assembly, which is arranged on the top of the substrate, and the wire grid assembly includes a first wire grid, which is located on the left side of the substrate, and the first wire grid includes a single vertical grid and a single horizontal grid; a second wire grid, which is arranged on one side of the first wire grid, and the second wire grid is a right-slanted single-slanted grid; a third wire grid, which is arranged on one side of the second wire grid, and the third wire grid is a left-slanted single-slanted grid; a fourth wire grid, which is arranged on one side of the third wire grid, and the fourth wire grid is a single vertical grid.

[0008] Furthermore, a pad assembly is provided on the substrate, and the pad assembly includes a first pad, a second pad, a third pad and a fourth pad, the first pad is connected to both ends of the first wire grid, the second pad is connected to both ends of the second wire grid, the third pad is connected to both ends of the third wire grid, and the fourth wire grid is connected to both ends of the fourth pad.

[0009] Furthermore, a sensitive grid is arranged on the substrate, and the material of the sensitive grid is Ivan.

[0010] Furthermore, a protective covering layer is pasted on the sensitive grid, and the covering layer is formed by laminating a polyimide film material through a special process.

[0011] Furthermore, the substrate is made of a square special polyimide film.

[0012] The beneficial effects of the present application are as follows: the present application provides a straight-grid and oblique-grid combined strain gauge structure, which has simple process operation, low heat generation due to high resistance, stable performance, and by combining the design of straight grid and oblique grid, it can more accurately measure the effects of multi-dimensional forces, thereby improving the measurement accuracy of the sensor, and the wire grid design in different directions can capture and reflect various forces, thereby providing more accurate measurement results.

[0013] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0015] Figure 1 This is an overall schematic diagram of a straight-grid and inclined-grid combined strain gauge structure in this application;

[0016] Figure 2 for Figure 1 Schematic diagram of the location of the pad components;

[0017] Figure 3 is a schematic diagram of the structure of the sensitive grid;

[0018] Figure 4 It is a schematic diagram of technical indicators;

[0019] Among them, the reference numerals in the figure are:

[0020] 1. strain gauge; 2. substrate; 21. pasting positioning point; 3. first wire grid; 31. single vertical grid; 32. single horizontal grid; 4. second wire grid; 5. third wire grid; 6. fourth wire grid; 7. pad assembly; 71. first pad; 72. second pad; 73. third pad; 74. fourth pad; 8. sensitive grid; 9. covering layer. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] like Figure 1-Figure 4 As shown, the present application provides a straight-grid and inclined-grid combined strain gauge structure, including a strain gauge 1, which is installed in a multi-dimensional force sensor to provide the multi-dimensional force sensor with higher measurement accuracy and a wider strain measurement range;

[0024] The strain gauge 1 includes a substrate 2, which is made of a square special polyimide film, so that the substrate 2 has strong rigidity and low shrinkage, which is beneficial to improving the stability of the sensor and reducing deformation. At the same time, at least four groups of pasting positioning points 21 are arranged on the substrate 2. Through the pasting positioning points 21, the operator can accurately position the strain gauge 1 to avoid deviation or misalignment, thereby ensuring the accuracy and reliability of the sensor.

[0025] The substrate 2 is provided with a wire grid assembly, including a first wire grid 3, the first wire grid 3 is located on the left side of the substrate 2, and the first wire grid 3 is divided into two types, wherein the first type is a single vertical grid 31, the single vertical grid 31 has a resistance value of 350Ω, and can well respond to the vertical force, and the second type is a single horizontal grid 32, the resistance value is 350Ω, and can well respond to the lateral force;

[0026] At the same time, a second wire grid 4 is arranged on one side of the first wire grid 3. The second wire grid 4 is a right-slanted single-slanted grid with a resistance value of 350Ω, which can well respond to the right-slanting force;

[0027] At the same time, a third wire grid 5 is arranged on one side of the second wire grid 4. The third wire grid 5 is a left-slanting single-slant grid with a resistance value of 350Ω, which can well reflect the left-slanting force;

[0028] At the same time, a fourth wire grid 6 is arranged on one side of the third wire grid 5. The fourth wire grid 6 is also a single vertical grid 31 with a resistance value of 350Ω, which can well reflect the vertical force.

[0029] In addition, the first wire grid 3 and the fourth wire grid 6 are symmetrically arranged in the two side areas of the substrate 2, and the second wire grid 4 and the third wire grid 5 are symmetrically arranged in the middle area of ​​the substrate 2. The structural design of multiple groups of wire grids takes into account the forces in different directions, so that the sensor can measure under a wider range of strain conditions and provide more comprehensive data.

[0030] At the same time, a pad assembly 7 is arranged on the substrate 2, and the pad assembly 7 includes a first pad 71, a second pad 72, a third pad 73 and a fourth pad 74, wherein the first pad 71 is connected to both ends of the first wire grid 3, the second pad 72 is connected to both ends of the second wire grid 4, the third pad 73 is connected to both ends of the third wire grid 5, and the fourth wire grid 6 is connected to both ends of the fourth pad 74. The pad assembly 7 facilitates signal transmission and connection of the sensor, thereby improving the reliability and stability of the sensor.

[0031] like Figure 3 As shown, a sensitive grid 8 is also arranged on the substrate 2. The material of the sensitive grid 8 is set to Iven, which has high sensitivity and stability, and helps to improve the measurement accuracy of the sensor. At the same time, a protective covering layer 9 is pasted on the sensitive grid 8. The covering layer 9 is made of polyimide film material through a special process, which can protect the sensitive grid 8 and improve the durability of the sensor.

[0032] In summary, the strain gauge 1 has simple process operation, low heat generation due to high resistance, stable performance, and by combining the design of straight grid and inclined grid, it can more accurately measure the effect of multi-dimensional force, improve the measurement accuracy of the sensor, and the wire grid design in different directions can capture and reflect various forces, thereby providing more accurate measurement results.

[0033] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A straight-grid and inclined-grid combined strain gauge structure, comprising: A substrate (2), wherein at least four groups of sticking positioning points (21) are arranged on the substrate (2); A wire grid assembly, the wire grid assembly being arranged on the top of the substrate (2), characterized in that the wire grid assembly comprises: A first wire grid (3), the first wire grid (3) being located on the left side of the substrate (2), the first wire grid (3) comprising a single vertical grid (31) and a single horizontal grid (32); A second wire grid (4), the second wire grid (4) being arranged on one side of the first wire grid (3), the second wire grid (4) being a right-slanted single-slanted grid; A third wire grid (5), the third wire grid (5) being arranged on one side of the second wire grid (4), the third wire grid (5) being a left-slanting single-slant grid; A fourth wire grid (6), the fourth wire grid (6) is arranged on one side of the third wire grid (5), and the fourth wire grid (6) is a single vertical grid (31).

2. The straight-grid and inclined-grid combined strain gauge structure according to claim 1, characterized in that: A pad assembly (7) is provided on the substrate (2), and the pad assembly (7) comprises a first pad (71), a second pad (72), a third pad (73) and a fourth pad (74), wherein the first pad (71) is connected to two ends of the first wire grid (3), the second pad (72) is connected to two ends of the second wire grid (4), the third pad (73) is connected to two ends of the third wire grid (5), and the fourth wire grid (6) is connected to two ends of the fourth pad (74).

3. The straight-grid and inclined-grid combined strain gauge structure according to claim 2, characterized in that: A sensitive grid (8) is arranged on the substrate (2), and the material of the sensitive grid (8) is Ivan.

4. The straight-grid and inclined-grid combined strain gauge structure according to claim 3, characterized in that: The substrate (2) is made of a square special polyimide film.

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