CN214407328U - Novel strain gauge and novel strain measurement device - Google Patents
Novel strain gauge and novel strain measurement device Download PDFInfo
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- CN214407328U CN214407328U CN202023282726.9U CN202023282726U CN214407328U CN 214407328 U CN214407328 U CN 214407328U CN 202023282726 U CN202023282726 U CN 202023282726U CN 214407328 U CN214407328 U CN 214407328U
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Abstract
The utility model belongs to measuring device, concretely relates to novel foil gage and novel strain measurement device. The strain gauge includes: the strain gauge comprises a strain gauge substrate 1 capable of generating large deformation, a flexible electrode 2 and a protective film 3; the flexible electrodes 2 are coated on two sides of the strain foil substrate 1, and the protective films 3 are additionally arranged on the outer sides of the strain foil substrate; the two flexible electrodes 2 are respectively connected with two poles of a direct current power supply.
Description
Technical Field
The utility model belongs to measuring device, concretely relates to novel foil gage and novel strain measurement device.
Background
The device has the characteristics of simple structure and low price, but has limited deformation degree due to the fact that the device is made of metal materials, and if a test piece is made of flexible materials with small natural modulus, the true strain on the surface of the test piece is difficult to accurately measure by the strain gauge.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the large strain of the test piece can be accurately measured.
The technical scheme is as follows:
a novel strain gage comprising:
the strain gauge comprises a strain gauge substrate 1 capable of generating large deformation, a flexible electrode 2 and a protective film 3;
the flexible electrodes 2 are coated on two sides of the strain foil substrate 1, and the protective films 3 are additionally arranged on the outer sides of the strain foil substrate; the two flexible electrodes 2 are respectively connected with two poles of a direct current power supply.
The strain gauge substrate is made of a dielectric high-elastic polymer film.
The strain gauge base 1 and the protective film 3 are both insulating.
Connecting the circuit and an electric signal monitoring device.
The strain gage behaves as a flexible capacitor.
A novel strain measurement device comprising:
the device comprises a strain gauge, an electric signal monitoring device 5 and a direct current power supply 6;
wherein, two electrodes of the strain gauge are connected with the electrodes of the direct current power supply 6, and an electric signal monitoring device 5 is connected in series between the two electrodes;
the electric signal monitoring device 5 is used for detecting the current change of the strain gauge.
The device also includes: a connection circuit is connected with the power supply circuit,
for connecting the electrical signal monitoring device 5, the strain gauge and the direct current power supply.
Has the advantages that:
the traditional strain gauge is made of metal materials, so that the deformation degree of the traditional strain gauge is limited, and if a test piece is made of flexible materials with small sexual modulus, the real strain on the surface of the test piece is difficult to accurately measure by adopting the strain gauge. The utility model provides a novel strain measurement device adopts the high-elastic polymer of dielectric as strain gage base member, replaces current metal material strain gage, because its itself adopts flexible material, self can produce big deformation, therefore the great testpieces of specially adapted deformation, the big strain on measurable quantity testpieces surface, its self still has the characteristics of the quality light, simple structure, low price.
Drawings
Fig. 1 is a schematic structural diagram of a novel strain gauge.
Fig. 2 is a schematic structural diagram of a novel strain measurement device.
Detailed Description
The device has the characteristics of simple structure and low price, but has limited deformation degree due to the fact that the device is made of metal materials, and if a test piece is made of flexible materials with small natural modulus, the true strain on the surface of the test piece is difficult to accurately measure by the strain gauge.
If can design one kind self and can produce the strain measuring device of big deformation, then can accurate measurement test piece the big strain, consequently the utility model provides a flexible strain measuring device based on high-elastic polymer of dielectric.
As shown in fig. 1, the strain gauge includes: foil gage base member 1, flexible electrode 2, protective film 3, the utility model provides a novel strain measurement device
1) As shown in fig. 2, the device comprises a strain gauge substrate 1, a flexible electrode 2, a protective film 3, an electric signal monitoring device 5, a connection line 7 and a power supply 6;
2) the strain piece substrate is made of a dielectric high-elastic polymer film and can generate large deformation;
3) coating flexible electrodes on two sides of a strain foil substrate, and adding protective films on the outer sides of the strain foil substrate;
4) the device is attached to the surface of a test piece, and two electrodes are connected with a lead and respectively connected with two poles of a direct current power supply;
5) an electric signal monitoring device is connected in series in the circuit and used for recording the current throughput.
6) The device is equivalent to a flexible capacitor, when the surface of the test piece is stretched or compressed, the device can deform along with the surface of the test piece, so that the capacitance changes, current passes through a circuit, and the strain generated on the surface of the test piece can be measured by accumulating the passing electric quantity.
7) The novel strain measuring device in the utility model adopts the dielectric high elastic polymer as the strain gauge matrix to replace the existing metal material strain gauge, and because the novel strain measuring device adopts the flexible material, the novel strain measuring device can generate large deformation, thereby being particularly suitable for a test piece with large deformation and measuring the large strain on the surface of the test piece;
8) the utility model discloses self still has the characteristics of light in weight, simple structure, low price.
The utility model provides a novel strain measurement device adopts the high-elastic polymer of dielectric as strain gage base member, replaces current metal material strain gage, because its itself adopts flexible material, self can produce big deformation, therefore the great testpieces of specially adapted deformation, the big strain on measurable quantity testpieces surface, its self still has the characteristics of the quality light, simple structure, low price.
Claims (6)
1. A novel strain gage, comprising: the device comprises a strain sheet substrate (1) capable of generating deformation, a flexible electrode (2) and a protective film (3);
the flexible electrodes (2) are coated on two sides of the strain foil substrate (1), and protective films (3) are additionally arranged on the outer sides of the strain foil substrate; the two flexible electrodes (2) are respectively connected with two poles of a direct current power supply.
2. A strain gage as claimed in claim 1, wherein the strain gage substrate (1) is made of a dielectric elastomeric polymer film.
3. A strain gage as claimed in claim 1, characterized in that the strain gage substrate (1) and the protective film (3) are both insulating.
4. A strain gage as defined in claim 1 wherein the strain gage behaves as a flexible capacitor.
5. A novel strain measurement device, comprising:
a strain gage as claimed in any one of claims 1 to 3, an electrical signal monitoring device (5) and a DC power supply (6);
wherein, two electrodes of the strain gauge are connected with the electrode of a direct current power supply (6), and an electric signal monitoring device (5) is connected in series between the two electrodes;
the electric signal monitoring device (5) is used for detecting the current change of the strain gauge.
6. The novel strain gauge of claim 5, further comprising: a connecting line (7),
the device is used for connecting the electric signal monitoring device (5), the strain gauge and the direct current power supply (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023282726.9U CN214407328U (en) | 2020-12-29 | 2020-12-29 | Novel strain gauge and novel strain measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023282726.9U CN214407328U (en) | 2020-12-29 | 2020-12-29 | Novel strain gauge and novel strain measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214407328U true CN214407328U (en) | 2021-10-15 |
Family
ID=78043024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023282726.9U Active CN214407328U (en) | 2020-12-29 | 2020-12-29 | Novel strain gauge and novel strain measurement device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214407328U (en) |
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2020
- 2020-12-29 CN CN202023282726.9U patent/CN214407328U/en active Active
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