CN220772123U - Embedded cement-based piezoelectric sensor - Google Patents
Embedded cement-based piezoelectric sensor Download PDFInfo
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- CN220772123U CN220772123U CN202322663767.XU CN202322663767U CN220772123U CN 220772123 U CN220772123 U CN 220772123U CN 202322663767 U CN202322663767 U CN 202322663767U CN 220772123 U CN220772123 U CN 220772123U
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- force transmission
- piezoelectric ceramic
- piezoelectric
- cement
- transmission support
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- 239000004568 cement Substances 0.000 title claims abstract description 27
- 239000000919 ceramic Substances 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 239000002585 base Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model relates to the technical field of sensors, in particular to a buried cement-based piezoelectric sensor, which comprises: the piezoelectric ceramic device comprises a packaging layer, piezoelectric ceramics, a wire, a fixed screw, a force transmission bracket and a moving column; the piezoelectric ceramic is of a circular plate-shaped structure, and the end parts of the wires are welded and fixed on one side of the piezoelectric ceramic; the piezoelectric ceramic is fixedly attached to the upper surface of the force transmission bracket through a fixing screw; the movable column is welded and fixed at the end part of the force transmission bracket; the outer sides of the piezoelectric ceramics, the force transmission support and the fixing screws are poured with packaging layers; the utility model has the advantages of enlarging deformation amount, enabling the piezoelectric ceramic to measure more tiny deformation and prolonging the service life of the piezoelectric ceramic by improving the embedded cement-based piezoelectric sensor, thereby effectively solving the problems and defects in the prior art and equipment.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to an embedded cement-based piezoelectric sensor.
Background
Cement-based refers to cement-based composite materials generally, which are composite materials formed by taking silicate cement as a matrix, taking alkali-resistant glass fibers, general synthetic fibers, various ceramic fibers, high-performance fibers such as carbon and aramid fibers, metal wires, natural plant fibers and mineral fibers as reinforcements, adding fillers, chemical additives and water and adopting a composite process; the cement-based building can generate tiny deformation which can not be observed by naked eyes in the use process, and when the deformation of the structure exceeds the maximum deformation which can be born by the structure, the structure is damaged, so that serious damage is caused; therefore, strain monitoring of building structures and monitoring of the development of micro-cracks therein are particularly important.
The piezoelectric sensor is generally buried in cement to detect the deformation of the building, and the stress concentration of the metal-packaged sensor and the cement connecting interface is easy to separate, so that the monitoring precision of the sensor is affected; a sensor encapsulated by nonmetallic materials, the elasticity of the encapsulation material affects the detection accuracy of the sensor.
In view of the above, an object of the present utility model is to provide an embedded cement-based piezoelectric sensor, which solves the problems and improves the practical value.
Disclosure of Invention
The present utility model is directed to an embedded cement-based piezoelectric sensor that addresses the problems and deficiencies presented in the background art discussed above.
In order to achieve the above purpose, the utility model provides an embedded cement-based piezoelectric sensor, which is achieved by the following specific technical means:
a buried cement-based piezoelectric sensor, comprising: the piezoelectric ceramic device comprises a packaging layer, piezoelectric ceramics, a wire, a fixed screw, a force transmission bracket and a moving column; the piezoelectric ceramic is of a circular plate-shaped structure, and the end parts of the wires are welded and fixed on one side of the piezoelectric ceramic; the piezoelectric ceramic is fixedly attached to the upper surface of the force transmission bracket through a fixing screw; the movable column is welded and fixed at the end part of the force transmission bracket; and an encapsulation layer is poured on the outer sides of the piezoelectric ceramics, the force transmission support and the fixing screws.
As a further optimization of the technical scheme, the force transmission support is of a Chinese character cross-shaped sheet structure made of elastic metal, and threaded holes for screwing the fixing screws are formed in the force transmission support.
As a further optimization of the technical scheme, the movable column is of a round columnar structure, and the movable column is arranged at the end part of the force transmission support.
As a further optimization of the technical scheme, the packaging layer is cylindrical made of rubber materials.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the force transmission support is of a Chinese character cross-shaped sheet structure made of elastic metal, threaded holes for screwing the fixing screws are formed in the force transmission support, the force transmission support and the moving column act in a leverage mode, displacement of the moving column is transmitted to the force transmission support at the end portion, and the force transmission support is stressed to deform to drive the piezoelectric ceramics to deform, so that the piezoelectric ceramics can measure more tiny deformation.
2. The packaging layer is made of rubber, so that the piezoelectric ceramic is protected, and the service life of the piezoelectric ceramic is prolonged.
3. The utility model has the advantages of enlarging deformation amount, enabling the piezoelectric ceramic to measure more tiny deformation and prolonging the service life of the piezoelectric ceramic by improving the embedded cement-based piezoelectric sensor, thereby effectively solving the problems and defects in the prior art and equipment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
FIG. 3 is a schematic view of an explosive structure of the internal structure of the present utility model;
fig. 4 is a schematic diagram of the structure of the force transmission bracket and the moving column of the utility model.
In the figure: the piezoelectric ceramic device comprises a packaging layer 1, piezoelectric ceramics 2, a lead 3, a fixed screw 4, a force transmission bracket 5 and a movable column 6.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
A buried cement-based piezoelectric sensor, comprising: the piezoelectric ceramic packaging structure comprises a packaging layer 1, piezoelectric ceramics 2, a lead 3, a fixed screw 4, a force transmission bracket 5 and a moving column 6; the piezoelectric ceramic 2 is of a circular plate-shaped structure, and the end part of the lead 3 is welded and fixed on one side of the piezoelectric ceramic 2; the piezoelectric ceramic 2 is fixedly attached to the upper surface of the force transmission bracket 5 through a fixing screw 4; the force transmission support 5 is of a Chinese character cross-shaped sheet structure made of elastic metal, threaded holes for screwing the fixed screws 4 are formed in the force transmission support 5, leverage is formed between the force transmission support 5 and the movable column 6, displacement of the movable column 6 is transmitted to the force transmission support 5 at the end, the force transmission support 5 is stressed and deformed to drive the piezoelectric ceramics 2 to be stressed and deformed, and the piezoelectric ceramics 2 can measure more tiny deformation; the movable column 6 is welded and fixed at the end part of the force transmission bracket 5; the movable column 6 is of a circular columnar structure, four positions of the movable column 6 are arranged at the end part of the force transmission support 5, the movable column 6 receives deformation of the cement base to generate movement, and the received force is transmitted to the force transmission support 5; the outer sides of the piezoelectric ceramics 2, the force transmission support 5 and the fixing screws 4 are poured with a packaging layer 1; the packaging layer 1 is cylindrical made of rubber materials, and plays a role in waterproof protection for the piezoelectric ceramic 2.
The concrete implementation steps of the embedded cement-based piezoelectric sensor include: when the sensor is used, the sensor is integrally buried in the cement base, when the cement base building generates tiny deformation, the movable column 6 moves to deform the force transmission support 5, the force transmission support 5 deforms to drive the piezoelectric ceramic 2 to deform, and the piezoelectric ceramic 2 generates current to be output through the lead 3.
To sum up: the embedded cement-based piezoelectric sensor is characterized in that a force transmission support is of a Chinese character cross-shaped sheet structure made of elastic metal, threaded holes for screwing fixing screws are formed in the force transmission support, the force transmission support and a movable column act in a leverage way, displacement of the movable column is transmitted to the force transmission support at the end part, and the force transmission support is stressed to deform to drive piezoelectric ceramics to deform, so that the piezoelectric ceramics can measure more tiny deformation; the packaging layer is made of rubber, so that the piezoelectric ceramic is protected, and the service life of the piezoelectric ceramic is prolonged; the embedded cement-based piezoelectric sensor has the advantages that the deformation can be amplified, the piezoelectric ceramic can measure more tiny deformation, the service life of the piezoelectric ceramic is prolonged, and the problem of the influence accuracy of the existing sensor package is solved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A buried cement-based piezoelectric sensor, comprising: the piezoelectric ceramic packaging structure comprises a packaging layer (1), piezoelectric ceramics (2), a lead (3), a fixing screw (4), a force transmission bracket (5) and a moving column (6); the method is characterized in that: the piezoelectric ceramic (2) is of a circular plate-shaped structure, and the end part of the lead (3) is welded and fixed on one side of the piezoelectric ceramic (2); the piezoelectric ceramic (2) is fixedly attached to the upper surface of the force transmission bracket (5) through a fixing screw (4); the movable column (6) is welded and fixed at the end part of the force transmission bracket (5); and an encapsulation layer (1) is poured on the outer sides of the piezoelectric ceramics (2), the force transmission support (5) and the fixing screws (4).
2. A buried cement-based piezoelectric sensor according to claim 1, wherein: the force transmission support (5) is of a Chinese character cross-shaped sheet structure made of elastic metal, and threaded holes for screwing the fixing screws (4) are formed in the force transmission support (5).
3. A buried cement-based piezoelectric sensor according to claim 1, wherein: the movable column (6) is of a round columnar structure, the movable column (6) is arranged at the end part of the force transmission support (5) in four places, and the movable column (6) receives deformation of the cement base to generate movement and transmits the received force to the force transmission support (5).
4. A buried cement-based piezoelectric sensor according to claim 1, wherein: the packaging layer (1) is cylindrical made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663767.XU CN220772123U (en) | 2023-10-07 | 2023-10-07 | Embedded cement-based piezoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322663767.XU CN220772123U (en) | 2023-10-07 | 2023-10-07 | Embedded cement-based piezoelectric sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220772123U true CN220772123U (en) | 2024-04-12 |
Family
ID=90612002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322663767.XU Active CN220772123U (en) | 2023-10-07 | 2023-10-07 | Embedded cement-based piezoelectric sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220772123U (en) |
-
2023
- 2023-10-07 CN CN202322663767.XU patent/CN220772123U/en active Active
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