CN112857636A - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN112857636A CN112857636A CN202110153715.0A CN202110153715A CN112857636A CN 112857636 A CN112857636 A CN 112857636A CN 202110153715 A CN202110153715 A CN 202110153715A CN 112857636 A CN112857636 A CN 112857636A
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- China
- Prior art keywords
- pressure sensor
- layer
- electrode plate
- elastic intermediate
- elastic
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- 239000010410 layer Substances 0.000 claims description 39
- 239000002985 plastic film Substances 0.000 claims description 12
- 229920006255 plastic film Polymers 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
Abstract
The invention relates to a pressure sensor, which comprises an elastic intermediate body made of high-resistance conductive rubber and electrode plates respectively attached and fixed on the upper side and the lower side of the intermediate body, wherein each electrode plate is connected with a lead, the elastic intermediate body comprises a columnar body in the middle and a variable elastic layer integrally arranged on the upper surface and/or the lower surface of the columnar body, and the variable elastic layer is in an array-shaped bulge structure with a small upper part and a large lower part or a grid structure with a reticular cross section. According to the pressure sensor, the shape of the variable elastic layer is a convex structure with a small upper part and a large lower part or a grid structure with a net-shaped cross section, after the pressure sensor is subjected to external force, the deformation space and the deformation amplitude are large, so that the resistance value of the corresponding elastic intermediate under different external force is large, the measurement is sensitive and accurate, the elastic intermediate has a certain volume and a certain specific shape, the processing consistency is high, the influence of external factors in the transportation and placement process can be ignored, and the occurrence of a drift phenomenon is avoided.
Description
Technical Field
The invention relates to the field of health detection, in particular to a pressure sensor.
Background
With the pursuit of people for quality of life being higher and higher, in order to guarantee the health, the customized shoes which are customized according to the shapes of the soles are more and more popular. In the prior art, a thin film pressure sensor is adhered to a measuring area on the inner surface of a sole, so that in the practical use, even if the thin film sensors in the same batch are used, the discreteness of the data obtained under the same measuring condition is larger, and in the multiple measurements of the same thin film pressure sensor under the same measuring condition, the error is larger, the measuring result is difficult to reflect the real situation, and the larger error often makes the customized shoe made according to the method difficult to achieve the ideal effect.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pressure sensor and a pressure distribution detection shoe.
The technical scheme of the pressure sensor is as follows:
the utility model provides a pressure sensor, includes the elasticity midbody of being made by high resistance conductive rubber and laminate respectively and fix the electrode slice in both sides about the midbody, each the electrode slice is connecting wire all, the elasticity midbody includes the columnar body at middle part and the variable elastic layer of an organic whole on locating columnar body upper surface and/or lower surface, and the variable elastic layer is the netted grid structure of protruding structure or cross section big end down for the array form, the upper strata the electrode slice with the connecting portion of wire and the lower floor the electrode slice with the connecting portion of wire set up in the vertical direction that staggers.
Preferably, the convex structures are arrayed cones, hemispheroids or platforms which are uniformly distributed on the upper surface and/or the lower surface.
Preferably, the width of the elastic intermediate is 0.5cm to 2cm, the vertical length is 1mm to 4mm, and the vertical length of the columnar body is twice the thickness of the single variable elastic layer.
Preferably, the electrode plate is a nickel plate.
Preferably, the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives.
Preferably, an adhesive layer is arranged on the lower surface of the electrode plate of the lower layer.
Preferably, plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize the fitting and fixing of the electrode plate on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.
Preferably, the connection part of the electrode plate and the lead on the upper layer and the connection part of the electrode plate and the lead on the lower layer are staggered in the vertical direction.
When the pressure sensor is used, the pressure sensor can be placed in a cylindrical mounting seat in a shoe or adhered in a sole, after a foot is stepped on, the variable elastic layer is extruded and deformed, because the shape of the variable elastic layer is a bulge structure with a small upper part and a large lower part or a grid structure with a net-shaped cross section, after the pressure sensor is subjected to external force, the deformation space and the deformation amplitude are larger, the contact area of an electrode plate and the variable elastic layer is larger in change, the resistance value of an elastic intermediate corresponding to different external forces is larger in change, the measurement is more sensitive and accurate, meanwhile, compared with a needle punching type pressure sensor, because the elastic intermediate does not need to be punctured to damage the structure, the service life is much longer, because the elastic intermediate has a certain volume and a specific shape, the processing consistency is high, and the influence of external factors in the transportation and placement process can be ignored, the pressure sensor can be produced and used in batch after pressure and resistance are actually calibrated through tests, and the structure is very simple. The connecting portion of the electrode plate and the lead on the upper layer and the connecting portion of the electrode plate and the lead on the lower layer are arranged in a staggered mode in the vertical direction, and short circuit is prevented when the elastic intermediate is thin.
Furthermore, the electrode plate is made of a nickel plate which is hard, so that the stress consistency during pressing is ensured.
Furthermore, an adhesive layer is arranged on the lower surface of the electrode plate of the lower layer and can be adhered to the measuring surface.
Furthermore, plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize that the electrode plate is fixed in a laminating mode on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.
Drawings
FIG. 1 is a schematic diagram of one configuration of a pressure sensor in an embodiment of the invention;
FIG. 2 is a schematic diagram of the structure of the elastomeric intermediate of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a schematic diagram of another configuration of a pressure sensor in an embodiment of the invention;
fig. 5 is a schematic top view of the elastomeric intermediate of fig. 4.
Detailed Description
The following detailed description of embodiments of the invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
A pressure sensor, as shown in FIGS. 1-3, comprises an elastic intermediate body made of high-resistance conductive rubber and electrode plates 4, 5 respectively attached and fixed on the upper and lower sides of the intermediate body, the high-resistance conductive rubber is generally made of doped graphite or nanoscale conductive metal under certain conditions, the resistance of the conductive rubber is controlled by controlling the doping degree and other parameters, the manufacturing of the high-resistance conductive rubber is the prior art, and will not be described herein, in this embodiment, the high-resistance conductive rubber refers to a conductive rubber material corresponding to the elastic intermediate body with a resistance of 20M omega in a natural state, the electrode plates can be nickel plates or copper plates, etc., the embodiment adopts nickel plates which are hard and ensure the stress consistency when pressing down, each electrode plate is connected with a lead 6, 7, the connection part of the upper electrode plate 4 and the lead 7 and the connection part of the lower electrode plate 5 and the lead 6 are staggered in a vertical direction, the elastic intermediate body comprises a columnar body 1 in the middle and variable elastic layers 2 and 3 integrally arranged on the upper surface and the lower surface of the columnar body, the variable elastic layers are in an array-shaped convex structure with a small upper part and a large lower part or in a grid structure with a net-shaped cross section, as shown in fig. 3, the grid structure with the net-shaped cross section is adopted in the embodiment.
The width of the elastic intermediate is 0.5 cm-2 cm, and the vertical length is 1 mm-4 mm, in this embodiment, the width of the elastic intermediate is 1cm, and the vertical length is 1mm, wherein the vertical length of the cylindrical body 1 is twice the thickness of the single variable elastic layer, the cylindrical body is a cylinder in this embodiment, and the variable elastic layer is circular. Plastic films 8 and 9 are adhered to the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are adhered together to realize the adhesion and fixation of the electrode plate on the upper side and the lower side of the elastic intermediate body, and the lower surface of the plastic film on the lower layer is provided with an adhesive layer. (not shown) for attachment to a measuring surface. The pressure sensor of the present embodiment has a resistance value variation range of 20M Ω to 200K Ω when pressed.
Example 2
Unlike the previous embodiments, as shown in fig. 4-5, the protruding structures are array- shaped cones 10, 11 uniformly distributed on the upper and lower surfaces, and the cones may be cones or pyramids, in this embodiment, cones 12; the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives, and the lower surface of the electrode plate on the lower layer is provided with an adhesive layer (not shown in the figure) which can be used for being attached to a measuring surface.
In other embodiments, different from the above embodiments, the variable elastic layer may be disposed on only one surface of the columnar body as needed, the convex structure may be a hemisphere or a truncated cone, and the truncated cone may be a circular truncated cone or a truncated pyramid.
It should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the invention, and these modifications and substitutions should also be regarded as the scope of the invention.
Claims (7)
1. A pressure sensor, characterized by: the electrode plate comprises an elastic intermediate body made of high-resistance conductive rubber and electrode plates which are respectively attached and fixed on the upper side and the lower side of the intermediate body, wherein each electrode plate is connected with a lead, the elastic intermediate body comprises a cylindrical body in the middle and a variable elastic layer integrally arranged on the upper surface and/or the lower surface of the cylindrical body, the variable elastic layer is an array-shaped bulge structure with a small upper part and a large lower part or a grid structure with a reticular cross section, and the connecting parts of the electrode plates and the leads on the upper layer and the connecting parts of the electrode plates and the leads on the lower layer are arranged in a staggered mode in the.
2. A pressure sensor as claimed in claim 1, wherein: the convex structures are arrayed cones, hemispheroids or platforms which are uniformly distributed on the upper surface and/or the lower surface.
3. A pressure sensor as claimed in claim 2, wherein: the width of the elastic intermediate is 0.5 cm-2 cm, the vertical length of the elastic intermediate is 1 mm-4 mm, and the vertical length of the columnar body is twice of the thickness of a single variable elastic layer.
4. A pressure sensor as claimed in claim 3, wherein: the electrode plate is a nickel plate.
5. A pressure sensor according to any one of claims 1 to 4, wherein: the electrode plates are fixedly attached to the upper side and the lower side of the elastic intermediate body through conductive adhesives.
6. A pressure sensor as claimed in claim 5, wherein: and the lower surface of the electrode plate of the lower layer is provided with an adhesive layer.
7. A pressure sensor according to any one of claims 1 to 4, wherein: plastic films are pasted on the upper surface of the electrode plate on the upper layer and the lower surface of the electrode plate on the lower layer, the circumferential edges of the two plastic films are bonded together to realize the fitting and fixing of the electrode plate on the upper side and the lower side of the elastic intermediate, and the lower surface of the plastic film on the lower layer is provided with a bonding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153715.0A CN112857636A (en) | 2021-02-04 | 2021-02-04 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153715.0A CN112857636A (en) | 2021-02-04 | 2021-02-04 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112857636A true CN112857636A (en) | 2021-05-28 |
Family
ID=75986709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110153715.0A Pending CN112857636A (en) | 2021-02-04 | 2021-02-04 | Pressure sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN112857636A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936790A (en) * | 2010-07-19 | 2011-01-05 | 西安交通大学 | Plantar pressure measuring device |
| CN103743503A (en) * | 2013-12-31 | 2014-04-23 | 浙江大学 | Flexible three-dimensional force touch sensor based on piezoresistive and capacitive combination |
| CN104034455A (en) * | 2014-07-01 | 2014-09-10 | 重庆材料研究院有限公司 | Pressure sensor based on magnetorheological materials |
| CN106073293A (en) * | 2016-08-29 | 2016-11-09 | 孙承业 | A kind of array bed |
| CN106197772A (en) * | 2016-07-06 | 2016-12-07 | 无锡格菲电子薄膜科技有限公司 | A kind of pliable pressure sensor and preparation method thereof |
| CN106932128A (en) * | 2017-04-21 | 2017-07-07 | 清华大学深圳研究生院 | For the pressure sensitive layer and piezoresistive pressure sensor of piezoresistive pressure sensor |
| CN108871629A (en) * | 2018-07-20 | 2018-11-23 | 浙江大学 | A kind of flexible resistive array of pressure sensors and preparation method thereof |
| CN111006802A (en) * | 2019-12-17 | 2020-04-14 | 华中科技大学 | Multi-mode metamorphic flexible sensor and signal acquisition system |
| CN111256888A (en) * | 2020-03-02 | 2020-06-09 | 吉林大学 | Bionic multilevel structure flexible stress and strain combined sensor and preparation method thereof |
| CN112067177A (en) * | 2020-08-26 | 2020-12-11 | 上海域丰传感仪器有限公司 | Piezoresistive pressure sensor and piezoresistive pressure sensing array |
| CN112179530A (en) * | 2020-09-14 | 2021-01-05 | 电子科技大学 | Flexible pressure sensor based on double-sided microstructure electrode and paper and preparation method |
| CN214066387U (en) * | 2021-02-04 | 2021-08-27 | 西畔(北京)信息技术有限责任公司 | Pressure sensor |
-
2021
- 2021-02-04 CN CN202110153715.0A patent/CN112857636A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936790A (en) * | 2010-07-19 | 2011-01-05 | 西安交通大学 | Plantar pressure measuring device |
| CN103743503A (en) * | 2013-12-31 | 2014-04-23 | 浙江大学 | Flexible three-dimensional force touch sensor based on piezoresistive and capacitive combination |
| CN104034455A (en) * | 2014-07-01 | 2014-09-10 | 重庆材料研究院有限公司 | Pressure sensor based on magnetorheological materials |
| CN106197772A (en) * | 2016-07-06 | 2016-12-07 | 无锡格菲电子薄膜科技有限公司 | A kind of pliable pressure sensor and preparation method thereof |
| CN106073293A (en) * | 2016-08-29 | 2016-11-09 | 孙承业 | A kind of array bed |
| CN106932128A (en) * | 2017-04-21 | 2017-07-07 | 清华大学深圳研究生院 | For the pressure sensitive layer and piezoresistive pressure sensor of piezoresistive pressure sensor |
| CN108871629A (en) * | 2018-07-20 | 2018-11-23 | 浙江大学 | A kind of flexible resistive array of pressure sensors and preparation method thereof |
| CN111006802A (en) * | 2019-12-17 | 2020-04-14 | 华中科技大学 | Multi-mode metamorphic flexible sensor and signal acquisition system |
| CN111256888A (en) * | 2020-03-02 | 2020-06-09 | 吉林大学 | Bionic multilevel structure flexible stress and strain combined sensor and preparation method thereof |
| CN112067177A (en) * | 2020-08-26 | 2020-12-11 | 上海域丰传感仪器有限公司 | Piezoresistive pressure sensor and piezoresistive pressure sensing array |
| CN112179530A (en) * | 2020-09-14 | 2021-01-05 | 电子科技大学 | Flexible pressure sensor based on double-sided microstructure electrode and paper and preparation method |
| CN214066387U (en) * | 2021-02-04 | 2021-08-27 | 西畔(北京)信息技术有限责任公司 | Pressure sensor |
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Effective date of registration: 20231023 Address after: 311300 709, Building 13, Yijiangnan Jiayuan, Jincheng Street, Lin'an District, Hangzhou City, Zhejiang Province Applicant after: Wang Mingqiu Address before: 101100 room 01-1612, 3rd floor, 99 Shuixian West Road, Tongzhou District, Beijing Applicant before: Xipan (Beijing) Information Technology Co.,Ltd. |