CN214502725U - Piezoelectric cable sensor - Google Patents
Piezoelectric cable sensor Download PDFInfo
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- CN214502725U CN214502725U CN202120718661.3U CN202120718661U CN214502725U CN 214502725 U CN214502725 U CN 214502725U CN 202120718661 U CN202120718661 U CN 202120718661U CN 214502725 U CN214502725 U CN 214502725U
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Abstract
Piezoelectric cable sensor relates to piezoelectric film sensor technical field, especially relates to a piezoelectric cable sensor. The piezoelectric ceramic is characterized by comprising a metal core, a first piezoelectric layer, a second piezoelectric layer, an outer electrode and an insulating protective sleeve, wherein the metal core, the first piezoelectric layer, the second piezoelectric layer, the outer electrode and the insulating protective sleeve are coaxially arranged from inside to outside in sequence; the positive electrode of the first piezoelectric layer is in contact connection with the metal core, the negative electrode of the first piezoelectric layer is in contact connection with the positive electrode of the second piezoelectric layer, and the first piezoelectric layer and the second piezoelectric layer are arranged in opposite directions; the cathode of the second piezoelectric layer is in contact connection with the outer electrode; the outer electrode is arranged on the outer side of the second piezoelectric layer; the insulating protective sleeve is arranged on the outer side of the outer electrode. The utility model discloses have the reinforcing signal, improve product quality, simple structure, easily batch production's positive effect.
Description
Technical Field
The utility model relates to a piezoelectric film sensor technical field especially relates to a piezoelectric cable sensor.
Background
Piezoelectric cables are another form of piezoelectric film sensor. When the piezoelectric cable is subjected to pressure or is stretched, a piezoelectric effect is generated, thereby generating a charge or voltage signal proportional to the pressure or tension. The piezoelectric cable is very strong and can bear heavy load, and because it is in the shape of a strip, the piezoelectric cable is one of the ideal choices for large area monitoring. The utility model discloses an application number 2017200746410's utility model discloses a piezoelectric cable, its inner electrode that has adopted flexible electric core as piezoelectric cable because flexible electric core material has certain elasticity, and piezoelectric film can produce great prestressing force when the winding, influences product quality.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a piezoelectric cable sensor to reach the reinforcing signal, improve product quality's purpose.
The utility model provides a piezoelectric cable sensor, its characterized in that, including metal core, first piezoelectric layer, second piezoelectric layer, outer electrode and insulating protective sheath, metal core, first piezoelectric layer, second piezoelectric layer, outer electrode and insulating protective sheath are from inside to outside coaxial setting in proper order; the positive electrode of the first piezoelectric layer is in contact connection with the metal core, the negative electrode of the first piezoelectric layer is in contact connection with the positive electrode of the second piezoelectric layer, and the first piezoelectric layer and the second piezoelectric layer are arranged in opposite directions; the cathode of the second piezoelectric layer is in contact connection with the outer electrode; the outer electrode is arranged on the outer side of the second piezoelectric layer; the insulating protective sleeve is arranged on the outer side of the outer electrode.
Furthermore, the first piezoelectric layer and the metal core form an included angle of 20-75 degrees and are spirally wound or wrapped on the metal core clockwise or anticlockwise.
Further, a reinforced piezoelectric layer is disposed between the first piezoelectric layer and the second piezoelectric layer.
Further, the metal core is any one of a copper core, an iron core and an aluminum core, and one or two of a silver conductive layer and a gold conductive layer is/are arranged on the outer surface of the metal core.
Further, the first piezoelectric layer and the second piezoelectric layer are any one or more of a vinylidene fluoride copolymer piezoelectric film, a copolymer piezoelectric film of vinylidene fluoride and a fluorine-containing vinyl monomer, a polypropylene piezoelectric electret film and a polytetrafluoroethylene piezoelectric electret film.
Further, the outer electrode is any one of a metal winding, a copper woven mesh and conductive paper.
Further, the insulating protective sleeve is any one of polyethylene glycol terephthalate, polypropylene, polyethylene, polyvinyl chloride, fluorinated ethylene propylene, chlorinated polyethylene, chlorosulfonated polyethylene, nylon and silicon rubber.
Further, when the first piezoelectric layer is spirally wound or wrapped on the outer side of the metal core anticlockwise along the direction of the metal core outgoing line in production, the second piezoelectric layer is spirally wound or wrapped on the outer side of the first piezoelectric layer clockwise.
Further, when the first piezoelectric layer is spirally wound or wrapped outside the metal core clockwise along the direction of the metal core outgoing line during production, the second piezoelectric layer is spirally wound or wrapped outside the first piezoelectric layer anticlockwise.
Further, the first piezoelectric layer and the second piezoelectric layer are both strip-shaped thin films, the width of each strip-shaped thin film is 3mm-20mm, and the first piezoelectric layer and the second piezoelectric layer are respectively overlapped by 0.3mm-5mm when spirally wound or wrapped.
The utility model provides a piezoelectric cable sensor, metal core, first piezoelectric layer, second piezoelectric layer, outer electrode and insulating protective sheath are from inside to outside coaxial setting in proper order, and the in close contact with connects between each layer. The metal core is an inner electrode of the piezoelectric cable sensor, and the inner electrode is a positive electrode. The positive pole of first piezoelectric layer is connected with the metal core contact, and the negative pole of first piezoelectric layer is connected with the positive pole contact of second piezoelectric layer, and first piezoelectric layer and the opposite direction setting of second piezoelectric layer, and both form the isolation layer jointly, can strengthen the signal. And the cathode of the second piezoelectric layer is in contact connection with the external electrode. The outer electrode is a cathode and is arranged outside the second piezoelectric layer. The insulation protective sleeve is arranged outside the outer electrode. The first piezoelectric layer and the second piezoelectric layer are arranged on the metal core in opposite directions, so that an isolation layer can be formed, the metal core and the external electrode are prevented from being short-circuited, signals can be enhanced, and the product quality can be improved. Meanwhile, the structure is simple, and batch production is easy. Therefore, the utility model discloses have the reinforcing signal, improve product quality, simple structure, easily batch production's positive effect.
Drawings
The accompanying drawings partially disclose embodiments of the present invention, in which,
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of the present invention.
Detailed Description
As shown in fig. 1-2, the piezoelectric cable sensor provided by the present invention comprises a metal core 10, a first piezoelectric layer 11, a second piezoelectric layer 12, an outer electrode 13 and an insulating protective sleeve 14, wherein the metal core 10, the first piezoelectric layer 11, the second piezoelectric layer 12, the outer electrode 13 and the insulating protective sleeve 14 are coaxially disposed from inside to outside in sequence; the positive pole of the first piezoelectric layer 11 is connected with the metal core in a contact manner, the negative pole of the first piezoelectric layer 11 is connected with the positive pole of the second piezoelectric layer in a contact manner, and the first piezoelectric layer 11 and the second piezoelectric layer 12 are wound in opposite directions; the cathode of the second piezoelectric layer 12 is in contact connection with the external electrode; the external electrode 13 is arranged outside the second piezoelectric layer 12; an insulating protective sheath 14 is provided outside the outer electrode 13.
The utility model discloses when using, metal core 10, first piezoelectric layer 11, second piezoelectric layer 12, outer electrode 13 and insulating protective sheath 14 are from inside to outside coaxial setting in proper order, and the in close contact with connects between each layer. The metal core 10 is an inner electrode of the piezoelectric cable sensor, and the inner electrode is a positive electrode. The positive pole of the first piezoelectric layer 11 is connected with the metal core in a contact mode, the negative pole of the first piezoelectric layer is connected with the positive pole of the second piezoelectric layer in a contact mode, the first piezoelectric layer 11 and the second piezoelectric layer 12 are arranged in opposite directions, and the first piezoelectric layer 11 and the second piezoelectric layer form an isolation layer together. And the cathode of the second piezoelectric layer is in contact connection with the external electrode. The outer electrode 13 is a cathode and is arranged outside the second piezoelectric layer. An insulating protective sheath 14 is provided outside the outer electrode. The first piezoelectric layer and the second piezoelectric layer are wound on the metal core in opposite directions, so that an isolation layer can be formed, the metal core and the external electrode are prevented from being short-circuited, signals can be enhanced, and the product quality can be improved. And simultaneously, the utility model discloses the technology is ripe simple, and is with low costs, easily batch production.
The first piezoelectric layer 11 and the metal core form an included angle of 20-75 degrees and are spirally wound or wrapped on the metal core clockwise or anticlockwise. The first piezoelectric layer 11 is any one or more of a vinylidene fluoride copolymer piezoelectric film, a copolymer piezoelectric film of vinylidene fluoride and a fluorine-containing vinyl monomer, a polypropylene piezoelectric electret film and a polytetrafluoroethylene piezoelectric electret film. When the first piezoelectric layer 11 is spirally wound, the connection position of each spiral coil is overlapped by 0.3mm-5mm, so that signals can be enhanced, the product quality is improved, and meanwhile, the structure is simple and the batch production is easy.
A reinforcing piezoelectric layer is arranged between the first piezoelectric layer 11 and the second piezoelectric layer 12. The reinforced piezoelectric layer can be a piezoelectric film or a multilayer piezoelectric film. The positive pole of the first piezoelectric layer 11 is close to the metal core, the negative pole of the second piezoelectric layer 12 is close to the external electrode, and the electrode connection modes of all layers of piezoelectric films of the reinforced piezoelectric layer between the first piezoelectric layer 11 and the second piezoelectric layer 12 are the positive pole close to the metal core and the negative pole close to the external electrode. Or the cathode of the first piezoelectric layer 11 is close to the metal core, and the anode of the second piezoelectric layer 12 is close to the outer electrode; the electrode connection modes of each piezoelectric film of the reinforced piezoelectric layer between the first piezoelectric layer 11 and the second piezoelectric layer 12 are that the side close to the metal core is a negative electrode, and the side close to the external electrode is a positive electrode. The reinforced piezoelectric layer can further enhance the signal and improve the product quality.
The metal core 10 is any one of a copper core, an iron core and an aluminum core, and one or two of a silver conductive layer and a gold conductive layer are arranged on the outer surface of the metal core 10. The silver conducting layer and the gold conducting layer are electroplated on the outer surface of the metal core 10, so that the conductivity of the metal core can be improved, signals can be enhanced, and the product quality can be improved.
The first piezoelectric layer 11 and the second piezoelectric layer 12 are any one or more of a vinylidene fluoride copolymer piezoelectric film, a copolymer piezoelectric film of vinylidene fluoride and a fluorine-containing vinyl monomer, a polypropylene piezoelectric electret film and a polytetrafluoroethylene piezoelectric electret film. The first piezoelectric layer 11 and the second piezoelectric layer 12 can be well wound or wrapped on the metal core 10, so that signals can be enhanced, the product quality is improved, and meanwhile, the structure is simple and batch production is easy.
The external electrode 13 is any one of a metal wire, a copper mesh grid, and a conductive paper. The outer electrode 13 made of metal wire winding, copper mesh grid and conductive paper is a cathode and is wound or wrapped outside the second piezoelectric layer, so that signals can be enhanced, the product quality is improved, and meanwhile, the structure is simple and batch production is easy.
The insulating protective sleeve 14 is any one of polyethylene terephthalate, polypropylene, polyethylene, polyvinyl chloride, polyperfluorinated ethylene propylene, chlorinated polyethylene, chlorosulfonated polyethylene, nylon, silicon rubber and the like. The insulating protective sleeve 14 is a sheath, so that the safety performance can be improved, and the product quality is ensured.
The second piezoelectric layer 12 is spirally wound or wrapped outside the first piezoelectric layer 11 in a direction opposite to the winding direction of the first piezoelectric layer. When the first piezoelectric layer 11 is spirally wound or wrapped outside the metal core clockwise in the direction of the metal core outgoing line at the time of production, the second piezoelectric layer 12 is spirally wound or wrapped outside the first piezoelectric layer 11 counterclockwise in the direction of the metal core outgoing line at the time of production. When the first piezoelectric layer 11 is spirally wound or wrapped outside the metal core counterclockwise in the direction of the metal core outgoing line at the time of production, the second piezoelectric layer 12 is spirally wound or wrapped outside the first piezoelectric layer 11 clockwise in the direction of the metal core outgoing line at the time of production. The second piezoelectric layer 12 has an overlap of 0.3mm to 5mm per spiral turn junction when spirally wound or wrapped. First piezoelectric layer and the opposite direction winding of second piezoelectric layer or parcel can not only prevent metal core and outer electrode short circuit on the metal core, can strengthen the signal moreover, improve product quality, simple structure simultaneously, easily batch production.
The first piezoelectric layer 11 and the second piezoelectric layer 12 are both strip-shaped films, and the width of each strip-shaped film is 3mm-20 mm. The first piezoelectric layer 11 and the second piezoelectric layer 12 can be well wound or wrapped on the metal core 10, so that signals can be enhanced, the product quality is improved, and meanwhile, the structure is simple and batch production is easy.
Claims (10)
1. The piezoelectric cable sensor is characterized by comprising a metal core (10), a first piezoelectric layer (11), a second piezoelectric layer (12), an outer electrode (13) and an insulating protective sleeve (14), wherein the metal core (10), the first piezoelectric layer (11), the second piezoelectric layer (12), the outer electrode (13) and the insulating protective sleeve (14) are coaxially arranged from inside to outside in sequence; the positive electrode of the first piezoelectric layer (11) is in contact connection with the metal core, the negative electrode of the first piezoelectric layer (11) is in contact connection with the positive electrode of the second piezoelectric layer, and the first piezoelectric layer (11) and the second piezoelectric layer (12) are arranged in opposite directions; the negative electrode of the second piezoelectric layer (12) is in contact connection with an external electrode; the outer electrode (13) is arranged outside the second piezoelectric layer (12); the insulating protective sleeve (14) is arranged on the outer side of the outer electrode (13).
2. A piezoelectric cable sensor according to claim 1, wherein the first piezoelectric layer (11) is spirally wound or wrapped on the metal core clockwise or counterclockwise with an angle of 20 ° to 75 ° therebetween.
3. A piezoelectric cable sensor according to claim 1, wherein a reinforcing piezoelectric layer is provided between the first piezoelectric layer (11) and the second piezoelectric layer (12).
4. The piezoelectric cable sensor according to claim 1, wherein the metal core (10) is any one of a copper core, an iron core and an aluminum core, and the outer surface of the metal core (10) is provided with one or both of a silver conductive layer and a gold conductive layer.
5. The piezoelectric cable sensor according to claim 1, wherein the first piezoelectric layer (11) and the second piezoelectric layer (12) are any one of a vinylidene fluoride copolymer piezoelectric film, a copolymer piezoelectric film of vinylidene fluoride and a fluorine-containing vinyl monomer, a polypropylene piezoelectric electret film, and a polytetrafluoroethylene piezoelectric electret film.
6. The piezoelectric cable sensor according to claim 1, wherein the outer electrode (13) is any one of a metal wire, a copper mesh, and a conductive paper.
7. The piezoelectric cable sensor according to claim 1, wherein the insulating protective sheath (14) is any one of polyethylene terephthalate, polypropylene, polyethylene, polyvinyl chloride, polyperfluoroethylpropylene, chlorinated polyethylene, chlorosulfonated polyethylene, nylon, silicone rubber.
8. The piezoelectric cable sensor according to claim 1, wherein the first piezoelectric layer (11) is spirally wound or wrapped outside the metal core counterclockwise in a direction of the metal core outgoing line at the time of production, and the second piezoelectric layer (12) is spirally wound or wrapped outside the first piezoelectric layer (11) clockwise.
9. The piezoelectric cable sensor according to claim 1, wherein the first piezoelectric layer (11) is spirally wound or wrapped outside the metal core clockwise in a direction of the metal core outgoing line at the time of production, and the second piezoelectric layer (12) is spirally wound or wrapped outside the first piezoelectric layer (11) counterclockwise.
10. A piezoelectric cable sensor according to claim 1, wherein the first piezoelectric layer (11) and the second piezoelectric layer (12) are both strip-like thin films each having a width of 3mm-20mm, and the first piezoelectric layer (11) and the second piezoelectric layer (12) are each overlapped by 0.3mm-5mm when spirally wound or wrapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120718661.3U CN214502725U (en) | 2021-04-09 | 2021-04-09 | Piezoelectric cable sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120718661.3U CN214502725U (en) | 2021-04-09 | 2021-04-09 | Piezoelectric cable sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214502725U true CN214502725U (en) | 2021-10-26 |
Family
ID=78202227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120718661.3U Active CN214502725U (en) | 2021-04-09 | 2021-04-09 | Piezoelectric cable sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214502725U (en) |
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2021
- 2021-04-09 CN CN202120718661.3U patent/CN214502725U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Piezoelectric cable sensor Effective date of registration: 20230915 Granted publication date: 20211026 Pledgee: Rizhao Donggang Rural Commercial Bank Co.,Ltd. Pledgor: Sansan Intelligent Technology (Rizhao) Co.,Ltd. Registration number: Y2023370010099 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |