CN220625560U - Strain gauge for pressure sensor - Google Patents
Strain gauge for pressure sensor Download PDFInfo
- Publication number
- CN220625560U CN220625560U CN202322277173.5U CN202322277173U CN220625560U CN 220625560 U CN220625560 U CN 220625560U CN 202322277173 U CN202322277173 U CN 202322277173U CN 220625560 U CN220625560 U CN 220625560U
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- China
- Prior art keywords
- wire grid
- welding disk
- strain gauge
- pressure sensor
- substrate
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- 238000003466 welding Methods 0.000 claims abstract description 39
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The strain gauge for the pressure sensor comprises a substrate, wherein a first welding disk, a second welding disk, a third welding disk, a fourth welding disk, a fifth welding disk, a first wire grid, a second wire grid, a third wire grid and a fourth wire grid are arranged on the substrate, one end of the first welding disk is connected with one end of the first wire grid, the other end of the first welding disk is connected with one end of the third wire grid, the other end of the first wire grid is connected with one end of the second welding disk, the other end of the second welding disk is connected with one end of the second wire grid, the other end of the second wire grid is connected with the fourth welding disk, the other end of the third wire grid is connected with one end of the fifth welding disk, the other end of the fifth welding disk is connected with one end of the fourth wire grid, and the other end of the fourth wire grid is connected with one end of the third welding disk. The utility model has higher sensitivity, uses fewer sheets and saves cost.
Description
Technical Field
The utility model relates to a strain gauge, in particular to a high-precision strain gauge for a pressure sensor.
Background
For the pressure sensor, in order to realize pressure detection, a corresponding strain gauge needs to be arranged, and effective pressure monitoring is realized through deformation of the strain gauge. Most of the strain gauges used in the existing pressure sensing are round strain gauges, the round strain gauges have limited linear capacity after being applied and assembled, and moreover, the round strain gauges are required to be covered integrally, so that more materials are required to be used.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a strain gauge for a pressure sensor.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the strain gauge for the pressure sensor comprises a substrate, wherein a first welding disk, a second welding disk, a third welding disk, a fourth welding disk, a fifth welding disk, a first wire grid, a second wire grid, a third wire grid and a fourth wire grid are arranged on the substrate, one end of the first welding disk is connected with one end of the first wire grid, the other end of the first welding disk is connected with one end of the third wire grid, the other end of the first wire grid is connected with one end of the second welding disk, the other end of the second welding disk is connected with one end of the second wire grid, the other end of the second wire grid is connected with the fourth welding disk, the other end of the third wire grid is connected with one end of the fifth welding disk, the other end of the fifth welding disk is connected with one end of the fourth wire grid, and the other end of the fourth wire grid is connected with one end of the third welding disk.
The second wire grid and the third wire grid are arranged in the middle area of the first wire grid and the fourth wire grid.
The substrate is square, the first wire grid and the fourth wire grid are positioned on two symmetrical sides of the substrate, and the second wire grid and the third wire grid are arranged in the middle area of the substrate side by side.
The first wire grid is the same as the fourth wire grid, and the second wire grid is the same as the third wire grid.
The first wire grid and the fourth wire grid are arc-shaped, and the second wire grid and the third wire grid are square-shaped.
The first wire grid, the second wire grid, the third wire grid and the fourth wire grid are all of a transverse grid structure.
The pressure sensor produced by the strain gauge has smaller nonlinear error than the traditional annular wafer, improves the performance, uses less materials than the traditional wafer, and saves the cost.
Drawings
Fig. 1 is a schematic top view of the present utility model.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
In the description of the present utility model, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of description and simplification of the description, and does not indicate or imply that the indicated apparatus or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1, a strain gauge for a pressure sensor includes a substrate 1, where a first bonding pad 2, a second bonding pad 4, a third bonding pad 6, a fourth bonding pad 7, a fifth bonding pad 9, a first wire grid 3, a second wire grid 5, a third wire grid 10 and a fourth wire grid 8 are disposed on the substrate 1, one end of the first bonding pad 2 is connected with one end of the first wire grid 3, the other end of the first bonding pad 2 is connected with one end of the third wire grid 10, the other end of the first wire grid 3 is connected with one end of the second bonding pad 4, the other end of the second bonding pad 4 is connected with one end of the second wire grid 5, the other end of the second wire grid 5 is connected with one end of the fourth bonding pad 7, the other end of the third wire grid 10 is connected with one end of the fifth bonding pad 9, the other end of the fifth bonding pad 9 is connected with one end of the fourth wire grid 8, and the other end of the fourth wire grid 8 is connected with one end of the third bonding pad 6. The third bond pad 6 and the fourth bond pad 7 are connected as indirect connections, corresponding connection points may be realized. By means of the corresponding connection, a unitary structure for measuring pressure can be formed,
the second wire grid 5 and the third wire grid 10 are arranged in the middle area of the first wire grid 3 and the fourth wire grid 8, the second wire grid 5 and the third wire grid 10 are connected in a tight row and are positioned in the middle of the substrate 1, and the first wire grid 3 and the fourth wire grid 8 are respectively positioned on two sides of the substrate 1 and are symmetrically distributed. The substrate is square, and arc-shaped is arranged at two sides of the first wire grid and the fourth wire grid. Because the second wire grid and the third wire grid are positioned in the middle of the substrate and are distributed tightly, after the strain gauge is prepared, the wire grids positioned in the middle of the pressure sensor pressure guiding cavity are more concentrated, the reaction is more sensitive and the signal is larger.
The first wire grid and the fourth wire grid are arc-shaped, and the second wire grid and the third wire grid are square-shaped. The first wire grid, the second wire grid, the third wire grid and the fourth wire grid are all of a transverse grid structure.
In addition, in the concrete production, the polyimide film with the adhesive and the metal foil Wen Bo are closely adhered together by a heat lamination mode. And (3) sticking the bonded I Wen Bo onto a corresponding titanium frame, then throwing photoresist, drying, exposing, developing, etching and forming, and then precisely adjusting the zero point. And finally, trimming the material into a shape required by a design drawing. Of course, in actual production, instead of polyimide film and metal foil Wen Bo, films made of other materials may be used as the substrate, and other materials, such as Kang Tongbo, or other materials, may be used as the foil.
It should be noted that, the foregoing is only a preferred embodiment of the present utility model, and the present utility model is not limited to the foregoing embodiment, but it should be understood that although the present utility model has been described in detail with reference to the embodiment, it is possible for those skilled in the art to make modifications to the technical solutions described in the foregoing embodiment, or to make equivalent substitutions for some technical features thereof, but any modifications, equivalent substitutions, improvements and the like within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The strain gauge for the pressure sensor comprises a substrate and is characterized in that a first welding disk, a second welding disk, a third welding disk, a fourth welding disk, a fifth welding disk, a first wire grid, a second wire grid, a third wire grid and a fourth wire grid are arranged on the substrate, one end of the first welding disk is connected with one end of the first wire grid, the other end of the first welding disk is connected with one end of the third wire grid, the other end of the first wire grid is connected with one end of the second welding disk, the other end of the second welding disk is connected with one end of the second wire grid, the other end of the second wire grid is connected with one end of the fourth welding disk, the other end of the third wire grid is connected with one end of the fifth welding disk, the other end of the fifth welding disk is connected with one end of the fourth wire grid, and the other end of the fourth wire grid is connected with the third welding disk.
2. The strain gauge for a pressure sensor of claim 1, wherein the second wire grid and the third wire grid are disposed in an intermediate region of the first wire grid and the fourth wire grid.
3. The strain gauge for a pressure sensor of claim 1, wherein the substrate is square, the first wire grid and the fourth wire grid are positioned on symmetrical sides of the substrate, and the second wire grid and the third wire grid are positioned side by side in a middle region of the substrate.
4. The strain gauge for a pressure sensor of claim 1, wherein the first wire grid and the fourth wire grid are identical, and the second wire grid and the third wire grid are identical.
5. The strain gauge for a pressure sensor of claim 1, wherein the first wire grid and the fourth wire grid are arcuate and the second wire grid and the third wire grid are square.
6. The strain gauge for a pressure sensor of claim 1, wherein the first wire grid, the second wire grid, the third wire grid, and the fourth wire grid are each of a cross-grid configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322277173.5U CN220625560U (en) | 2023-08-24 | 2023-08-24 | Strain gauge for pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322277173.5U CN220625560U (en) | 2023-08-24 | 2023-08-24 | Strain gauge for pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220625560U true CN220625560U (en) | 2024-03-19 |
Family
ID=90228645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322277173.5U Active CN220625560U (en) | 2023-08-24 | 2023-08-24 | Strain gauge for pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220625560U (en) |
-
2023
- 2023-08-24 CN CN202322277173.5U patent/CN220625560U/en active Active
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