CN109724631B - Novel capacitive sensing belt of foot-kicking sensor - Google Patents
Novel capacitive sensing belt of foot-kicking sensor Download PDFInfo
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- CN109724631B CN109724631B CN201910107755.4A CN201910107755A CN109724631B CN 109724631 B CN109724631 B CN 109724631B CN 201910107755 A CN201910107755 A CN 201910107755A CN 109724631 B CN109724631 B CN 109724631B
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- twisted pair
- shielded twisted
- capacitive sensing
- conductors
- shielding layer
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- 239000004020 conductor Substances 0.000 claims abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 230000003071 parasitic effect Effects 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 230000006698 induction Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- SXHLTVKPNQVZGL-UHFFFAOYSA-N 1,2-dichloro-3-(3-chlorophenyl)benzene Chemical compound ClC1=CC=CC(C=2C(=C(Cl)C=CC=2)Cl)=C1 SXHLTVKPNQVZGL-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The invention discloses a novel capacitive sensing belt of a kick sensor, which comprises two shielded twisted pairs, wherein one end of two conductors in each shielded twisted pair is respectively connected to two electrodes connected to a PCB, the other end of the two conductors in each shielded twisted pair is connected with a ground wire in the shielded twisted pair, and meanwhile, the other end of the two conductors in each shielded twisted pair is connected with a shielding layer in the shielded twisted pair to form the capacitive sensing belt. According to the scheme, the two shielding twisted pairs are adopted to form the capacitive sensing band of the kick sensor, so that parasitic capacitance generated when inner metal exists can be effectively reduced, and the performance of the capacitive band is greatly improved.
Description
Technical Field
The invention relates to the technology of a kick sensor, in particular to a capacitance induction belt in the kick sensor.
Background
With the development of automobile electronic technology, people use automobiles as vehicles, and meanwhile, have higher requirements on comfort, and various convenient and practical products are generated. Because of the energy saving, high efficiency and convenience of the capacitive kick sensor, the capacitive kick sensor is more and more popular.
At present, the mainstream kicking sensor senses the kicking action of a person by using two capacitance induction belts. The capacitor strap is mainly selected from coaxial cables, and the coaxial cables have the following defects as the capacitor sensing strap:
1) Because the diameter is thicker, the welding is difficult to be performed when the welding wire is connected with the PCB, the welding pad is easy to fall off, and the process is complex.
2) Automotive grade coaxial cable is expensive due to its low demand.
3) Parasitic capacitance from the internal copper core can degrade the capacitor strap performance.
Disclosure of Invention
Aiming at the problems of the existing foot-kick sensor adopting a coaxial cable as a capacitance induction belt, a new capacitance induction belt scheme for the foot-kick sensor is needed.
Therefore, the invention aims to provide a novel capacitive sensing belt of a kick sensor, which is used for overcoming the problems existing in the prior art.
In order to achieve the above purpose, the novel capacitive sensing strip of the kick sensor provided by the invention comprises two shielded twisted pairs, wherein one end of two conductors in each shielded twisted pair is respectively connected to two electrodes connected to a PCB (printed circuit board) of a kick module, and the other end of the two conductors in each shielded twisted pair is connected with a ground wire in the shielded twisted pair and is connected with a shielding layer in the shielded twisted pair to form the capacitive sensing strip.
Further, the conductors in the shielded twisted pair are coated with an insulating layer.
Further, one end of two conductors in each shielded twisted pair is connected to two electrodes connected to the PCB board through a connector.
Further, at the end of each shielded twisted pair, two conductors are connected to ground.
Further, a shielding layer in the shielding twisted pair is coated on the periphery of the conductor and the ground wire.
Further, the shielding layer in the shielding twisted pair is an aluminum foil shielding layer.
According to the scheme, the two shielding twisted pairs are adopted to form the capacitive sensing band of the kick sensor, so that parasitic capacitance generated when inner metal exists can be effectively reduced, and the performance of the capacitive band is greatly improved.
Moreover, two conductors in the shielding twisted pair forming the capacitive sensing strip of the kick sensor are provided with insulating covers, and the shielding twisted pair is thinner and can be matched with the connector with higher waterproof grade in the prior art, so that the production cost is saved, and the shielding twisted pair is simple and convenient.
Moreover, the shielding twisted pair forming the capacitive sensing band of the kick sensor is a common standard wiring harness on a vehicle, and the vehicle-standard wiring harness is low in cost.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic diagram of the composition of a shielded twisted pair in this example;
fig. 2 is a schematic diagram of the composition of the capacitive sensing strip in this example.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Aiming at the problems of adopting coaxial cables to form the capacitive sensing strip of the kick sensor in the prior art, the novel shielding twisted pair is adopted to form the capacitive sensing strip of the kick sensor.
By way of example, two shielded twisted pair wires used in automobiles are preferred in this example to form the kick sensor capacitance sensing strip.
On the basis, one end of each of the two conductors in each shielding twisted pair is respectively connected to two electrodes connected to the PCB of the kick module; the other end of the two conductors in each shielded twisted pair is connected (e.g. welded) with the ground wire in the shielded twisted pair, and the other end of the two conductors in each shielded twisted pair is connected with the shielding layer of the outer layer based on the fact that the outside of the ground wire is not provided with an insulating layer, so that the two conductors in the shielded twisted pair are connected with the shielding layer in the shielded twisted pair to form a capacitance induction zone.
The capacitive sensing band of the kick sensor formed by the method effectively reduces parasitic capacitance generated by the existence of inner metal, and improves the performance of the capacitive sensing band; meanwhile, the cost can be reduced, the implementation process is simple, and the use is convenient.
The above-described aspects are described below by way of a specific application example.
Referring to fig. 1, a schematic diagram of a shielded twisted pair used in this example for a kick sensor capacitive sensing strip is shown.
As can be seen, the shielded twisted pair 10 is mainly composed of two conductors 11, 12, a ground wire 13, and an aluminum foil shielding layer 14.
Wherein the outer sides of the first sub-conductor 11 and the second conductor 12 are respectively coated with insulating layers 15, 16. The insulating layers 15, 16 may be constituted by insulating sheets, for example.
The first and second conductors 11 and 12 thus constructed are hinged to form a core, and an aluminum foil shielding layer 14 is coated on the outer side of the core.
On this basis, the ground wire 13 is disposed in a gap between the wire core and the aluminum foil shielding layer 14, and is connected with the aluminum foil shielding layer 14.
Finally, a sheath layer 17 is coated on the outer side of the aluminum foil shielding layer 14 to further improve the performance of the shielded twisted pair.
Referring to fig. 2, two shielded twisted pairs 10 are used in this example to form a capacitive sensor strip of a kick sensor, and the two shielded twisted pairs 10 are arranged in parallel.
In cooperation with the electrode, four electrodes 21 are designed on the PCB 20, and the four electrodes 21 are connected in pairs and divided into two groups.
In this example, one end of the conductor in the two shielded twisted pairs 10 is connected to an electrode 21 on the PCB board by means of a connector.
Specifically, as the top end of the capacitive sensing strip, one end of each of the two conductors 11, 12 in each shielded twisted pair 10 is connected to two electrodes 21 connected to the PCB board 20 through connectors 30, respectively, to form a capacitive sensing strip.
Thus, the production process steps can be effectively simplified, and the waterproof grade is improved; waterproof connectors corresponding to the width of the wires are arranged on the existing market, die sinking customization is not needed, and production cost is saved.
Further, at the end of the capacitor induction strip, the other end of the two conductors in each shielded twisted pair 10 is directly soldered to the ground wire in the shielded twisted pair, and then connected to the aluminum foil shield layer 14 in the middle shielded twisted pair to serve as the capacitor induction strip. Therefore, parasitic capacitance can be reduced, and induction strength can be enhanced.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The capacitive sensing strip of the skirting sensor is characterized by comprising two shielded twisted pairs, wherein one end of each of two conductors in each shielded twisted pair is respectively connected to two electrodes connected to a PCB (printed circuit board) of the skirting module, the other end of each of the two conductors in each shielded twisted pair is connected with a ground wire in the shielded twisted pair, and meanwhile, the ground wire is connected with a shielding layer in the shielded twisted pair to form the capacitive sensing strip, and the ground wire is arranged in a gap between a wire core and the shielding layer.
2. The kick sensor capacitive sensing strip of claim 1, wherein the conductors in the shielded twisted pair are coated with an insulating layer.
3. The kick sensor capacitive sensing strip of claim 1, wherein one end of two conductors in each shielded twisted pair is connected to two electrodes connected to a PCB board by a connector.
4. The kick sensor capacitive sensing strip of claim 1, wherein the shielding layer in the shielded twisted pair is wrapped around the conductor and ground.
5. The kick sensor capacitance sensing strip of claim 1, wherein the shielding layer in the shielded twisted pair is an aluminum foil shielding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107755.4A CN109724631B (en) | 2019-02-02 | 2019-02-02 | Novel capacitive sensing belt of foot-kicking sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910107755.4A CN109724631B (en) | 2019-02-02 | 2019-02-02 | Novel capacitive sensing belt of foot-kicking sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109724631A CN109724631A (en) | 2019-05-07 |
| CN109724631B true CN109724631B (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910107755.4A Active CN109724631B (en) | 2019-02-02 | 2019-02-02 | Novel capacitive sensing belt of foot-kicking sensor |
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| Country | Link |
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| CN (1) | CN109724631B (en) |
Citations (10)
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|---|---|---|---|---|
| CN202092768U (en) * | 2011-04-14 | 2011-12-28 | 中国特种设备检测研究院 | High temperature resistant and capacitive sensor with double shielding layers |
| CN102565588A (en) * | 2012-01-14 | 2012-07-11 | 天津大学 | On-line monitoring method used for high-voltage XLPE (Cross Linked Polyethylene) cable |
| CN204028288U (en) * | 2014-08-08 | 2014-12-17 | 国家电网公司 | The checkout equipment of cable local discharge and capacitive coupled sensors |
| CN205706533U (en) * | 2016-04-27 | 2016-11-23 | 上海翱翼汽车电子有限公司 | A kind of induction antenna |
| CN206321779U (en) * | 2016-12-14 | 2017-07-11 | 上海纳恩汽车技术有限公司 | A kind of efficient kicking sensor test device |
| CN107024610A (en) * | 2017-03-27 | 2017-08-08 | 扬州新概念电气有限公司 | A kind of novel high-precision capacitive battery pressure sensor |
| CN108331484A (en) * | 2018-01-05 | 2018-07-27 | 上海纳恩汽车技术有限公司 | A kind of automobile tail gate kicking sensor system |
| CN208257412U (en) * | 2017-11-17 | 2018-12-18 | 浙江万胜智能科技股份有限公司 | A kind of intelligent capacitor of electromagnetism interference |
| CN109281580A (en) * | 2018-09-29 | 2019-01-29 | 武汉佳特轿车零部件有限公司 | Electric tail gate kicking sensor and its control method for automobile tail gate |
| CN209459667U (en) * | 2019-02-02 | 2019-10-01 | 上海纳恩汽车技术有限公司 | A kind of new-type kicking sensor capacitive sensing band |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6777958B2 (en) * | 2001-10-17 | 2004-08-17 | Delphi Technologies, Inc. | Method and apparatus for detecting a change in capacitance of a capacitive proximity sensor |
-
2019
- 2019-02-02 CN CN201910107755.4A patent/CN109724631B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202092768U (en) * | 2011-04-14 | 2011-12-28 | 中国特种设备检测研究院 | High temperature resistant and capacitive sensor with double shielding layers |
| CN102565588A (en) * | 2012-01-14 | 2012-07-11 | 天津大学 | On-line monitoring method used for high-voltage XLPE (Cross Linked Polyethylene) cable |
| CN204028288U (en) * | 2014-08-08 | 2014-12-17 | 国家电网公司 | The checkout equipment of cable local discharge and capacitive coupled sensors |
| CN205706533U (en) * | 2016-04-27 | 2016-11-23 | 上海翱翼汽车电子有限公司 | A kind of induction antenna |
| CN206321779U (en) * | 2016-12-14 | 2017-07-11 | 上海纳恩汽车技术有限公司 | A kind of efficient kicking sensor test device |
| CN107024610A (en) * | 2017-03-27 | 2017-08-08 | 扬州新概念电气有限公司 | A kind of novel high-precision capacitive battery pressure sensor |
| CN208257412U (en) * | 2017-11-17 | 2018-12-18 | 浙江万胜智能科技股份有限公司 | A kind of intelligent capacitor of electromagnetism interference |
| CN108331484A (en) * | 2018-01-05 | 2018-07-27 | 上海纳恩汽车技术有限公司 | A kind of automobile tail gate kicking sensor system |
| CN109281580A (en) * | 2018-09-29 | 2019-01-29 | 武汉佳特轿车零部件有限公司 | Electric tail gate kicking sensor and its control method for automobile tail gate |
| CN209459667U (en) * | 2019-02-02 | 2019-10-01 | 上海纳恩汽车技术有限公司 | A kind of new-type kicking sensor capacitive sensing band |
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| CN109724631A (en) | 2019-05-07 |
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Address after: Room 101, building 44, No. 258, shenzhuan Road, Songjiang hi tech park, Caohejing Development Zone, Songjiang District, Shanghai, 201612 Applicant after: Shanghai nan'en Automobile Technology Co.,Ltd. Address before: Room 101, building 44, No. 258, shenzhuan Road, Songjiang hi tech park, Caohejing Development Zone, Songjiang District, Shanghai, 201612 Applicant before: SHANGHAI NAEN AUTOMOTIVE TECHNOLOGY Co.,Ltd. |
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