CN213336574U - Large-output signal full-bridge strain gauge - Google Patents
Large-output signal full-bridge strain gauge Download PDFInfo
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- CN213336574U CN213336574U CN202022271969.6U CN202022271969U CN213336574U CN 213336574 U CN213336574 U CN 213336574U CN 202022271969 U CN202022271969 U CN 202022271969U CN 213336574 U CN213336574 U CN 213336574U
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- wire grid
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Abstract
A large-output signal full-bridge strain gauge comprises a substrate, wherein a frame is arranged on the substrate, and a first welding spot, a second welding spot, a third welding spot, a fourth welding spot, a first wire grid, a second wire grid, a third wire grid, a fourth wire grid, a first positioning mark and a second positioning mark are arranged on the substrate; the first positioning mark and the second positioning mark are respectively arranged on two sides of the substrate, the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are symmetrically arranged up and down by taking the second positioning mark as a center, the first wire grid is connected with the second welding point, the second welding point is connected with the third wire grid, the third wire grid is connected with the first welding point, the first welding point is connected with the fourth wire grid, the fourth wire grid is connected with the fourth welding point, the fourth welding point is connected with the second wire grid, the second wire grid is connected with the third welding point, and the third welding point is connected with the first wire grid to form a Wheatstone bridge for measuring the pulling pressure value of the elastic body. The utility model discloses an adopt the longitudinal symmetry to distribute, it is big to constitute its output voltage signal under the same pressure condition of drawing behind the wheatstone bridge.
Description
Technical Field
The utility model relates to a strainometer, specifically speaking are big output signal full-bridge strainometer who uses on the driver.
Background
The strain of the object is a very important geometrical parameter, and the accurate measurement of the strain is very important. A strain sensor is a type of sensor used to measure the strain produced by the deformation of an object under force. Resistive strain gauges are the most commonly used sensing elements. It is a sensing element that can convert changes in strain on a mechanical member into changes in resistance. Strain sensors are widely available in many types, including resistive, capacitive, piezoelectric, inductive, and optical, by principle.
The existing full-bridge strain gauge is usually designed in a left-right parallel arrangement mode, and when an elastic body is attached to a stress, the difference value of the tension and pressure in the directions of a vertical wire grid and a transverse wire grid which are arranged in a left-right parallel arrangement mode is small, so that output voltage signals of the Wheatstone bridge formed by the Wheatstone bridge are small.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a big output signal full-bridge strain gauge.
In order to solve the technical problem, the utility model discloses take following technical scheme:
a large-output signal full-bridge strain gauge comprises a substrate, wherein a frame is arranged on the substrate, and a first welding spot, a second welding spot, a third welding spot, a fourth welding spot, a first wire grid, a second wire grid, a third wire grid, a fourth wire grid, a first positioning mark and a second positioning mark are arranged on the substrate;
the first positioning mark and the second positioning mark are respectively arranged on two sides of the substrate, the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are symmetrically arranged up and down by taking the second positioning mark as a center, the first wire grid is connected with the second welding point, the second welding point is connected with the third wire grid, the third wire grid is connected with the first welding point, the first welding point is connected with the fourth wire grid, the fourth wire grid is connected with the fourth welding point, the fourth welding point is connected with the second wire grid, the second wire grid is connected with the third welding point, and the third welding point is connected with the first wire grid to form a Wheatstone bridge for measuring the pulling pressure value of the elastic body;
the first welding spot is a Wheatstone bridge power line positive level; the third welding spot is a negative level of a power line of the Wheatstone bridge; the second welding spot is a Wheatstone bridge signal output line positive stage; the fourth pad is the negative of the wheatstone bridge signal output line.
The first wire grid and the fourth wire grid are vertical grids, and the second wire grid and the third wire grid are transverse grids.
The first wire grid and the second wire grid are located in the area between the first positioning mark and the second positioning mark.
The first welding spot, the second welding spot, the third welding spot and the fourth welding spot are arranged on one side of the second positioning mark.
The first wire grid and the second wire grid are arranged on one side of the first positioning mark from far to near, and the fourth wire grid and the third wire grid are arranged on the other side of the first positioning mark from far to near.
The utility model discloses adopt upper and lower symmetric distribution with the silk bars, vertical silk bars is big with horizontal silk bars direction pull pressure difference, and its output voltage signal is big under same pull pressure condition behind the constitution wheatstone bridge.
Drawings
Fig. 1 is a schematic top view of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in the accompanying drawing 1, the utility model provides a big output signal full bridge strain gauge, including basement 1, frame 2 has on the basement 1, be equipped with first solder joint 3, second solder joint 4, third solder joint 5, fourth solder joint 6, first silk bars 7, second silk bars 8, third silk bars 9, fourth silk bars 10, first scale 11, second scale 12 on the basement 1.
The first positioning mark 11 and the second positioning mark 12 are respectively arranged on two sides of the substrate 1, the first wire grid 7, the second wire grid 8, the third wire grid 9 and the fourth wire grid 10 are arranged up and down symmetrically by taking the second positioning mark as a center, the first wire grid is connected with the second welding point, the second welding point is connected with the third wire grid, the third wire grid is connected with the first welding point, the first welding point is connected with the fourth wire grid, the fourth wire grid is connected with the fourth welding point, the fourth welding point is connected with the second wire grid, the second wire grid is connected with the third welding point, and the third welding point is connected with the first wire grid, so that a Wheatstone bridge for measuring the pulling pressure value of the elastic body is formed.
The first welding spot is a Wheatstone bridge power line positive level; the third welding spot is a negative level of a power line of the Wheatstone bridge; the second welding spot is a Wheatstone bridge signal output line positive stage; the fourth pad is the negative of the wheatstone bridge signal output line.
The first wire grid and the fourth wire grid are vertical grids, and the second wire grid and the third wire grid are transverse grids.
The first wire grid and the second wire grid are located in the area between the first positioning mark and the second positioning mark. The first welding spot, the second welding spot, the third welding spot and the fourth welding spot are arranged on one side of the second positioning mark.
The first wire grid and the second wire grid are arranged on one side of the first positioning mark from far to near, and the fourth wire grid and the third wire grid are arranged on the other side of the first positioning mark from far to near.
Through the arrangement, the transverse wire grids and the vertical wire grids are arranged on two sides of the first positioning mark in an up-down symmetrical mode respectively, so that the difference value of the tension pressure in the direction of the vertical wire grids and the tension pressure in the direction of the transverse wire grids is large, and the integral output signal can be improved.
In the specific manufacturing process, the polyimide film with the adhesive and the metal foil illicit foil are tightly attached together in a hot lamination mode. And (3) sticking the attached illicit foil to a special titanium frame, throwing photoresist, drying, exposing, developing, etching and forming, and then carrying out precise zero point adjustment. And adding a protective film on the high-precision full-bridge strain gauge with the zero point adjusted by using a special polyimide film cover layer. And trimming the high-precision coated film by using a full-bridge strain gauge into a shape required by a design drawing.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited to the above, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A large-output signal full-bridge strain gauge comprises a substrate, wherein a frame is arranged on the substrate, and the large-output signal full-bridge strain gauge is characterized in that a first welding spot, a second welding spot, a third welding spot, a fourth welding spot, a first wire grid, a second wire grid, a third wire grid, a fourth wire grid, a first positioning scale and a second positioning scale are arranged on the substrate;
the first positioning mark and the second positioning mark are respectively arranged on two sides of the substrate, the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are symmetrically arranged up and down by taking the second positioning mark as a center, the first wire grid is connected with the second welding point, the second welding point is connected with the third wire grid, the third wire grid is connected with the first welding point, the first welding point is connected with the fourth wire grid, the fourth wire grid is connected with the fourth welding point, the fourth welding point is connected with the second wire grid, the second wire grid is connected with the third welding point, and the third welding point is connected with the first wire grid to form a Wheatstone bridge for measuring the pulling pressure value of the elastic body;
the first welding spot is a Wheatstone bridge power line positive level; the third welding spot is a negative level of a power line of the Wheatstone bridge; the second welding spot is a Wheatstone bridge signal output line positive stage; the fourth pad is the negative of the wheatstone bridge signal output line.
2. The large-output signal full-bridge strain gauge according to claim 1, wherein the first wire grid and the fourth wire grid are vertical wire grids, and the second wire grid and the third wire grid are transverse wire grids.
3. The large output signal full bridge strain gauge according to claim 2, wherein the first and second wire grids are located in a region between the first and second localizers.
4. The large output signal full bridge strain gauge according to claim 3, wherein the first, second, third and fourth pads are disposed on one side of the second positioning target.
5. The full-bridge strain gauge with large output signal as claimed in claim 4, wherein the first and second wire grids are arranged on one side of the first position indicator from far to near, and the fourth and third wire grids are arranged on the other side of the first position indicator from far to near.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022271969.6U CN213336574U (en) | 2020-10-13 | 2020-10-13 | Large-output signal full-bridge strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022271969.6U CN213336574U (en) | 2020-10-13 | 2020-10-13 | Large-output signal full-bridge strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213336574U true CN213336574U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022271969.6U Active CN213336574U (en) | 2020-10-13 | 2020-10-13 | Large-output signal full-bridge strain gauge |
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| CN (1) | CN213336574U (en) |
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- 2020-10-13 CN CN202022271969.6U patent/CN213336574U/en active Active
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