CN107976266A - A kind of pressure amplifies sensor - Google Patents
A kind of pressure amplifies sensor Download PDFInfo
- Publication number
- CN107976266A CN107976266A CN201711180568.6A CN201711180568A CN107976266A CN 107976266 A CN107976266 A CN 107976266A CN 201711180568 A CN201711180568 A CN 201711180568A CN 107976266 A CN107976266 A CN 107976266A
- Authority
- CN
- China
- Prior art keywords
- pressure
- sensitive film
- gland
- side wall
- mainstay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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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 discloses a kind of pressure to amplify sensor, including：Gland, pressure-sensitive film, side wall and bottom plate；Gland lower surface is also equipped with the first voltage dependent resistor silk, and the first voltage dependent resistor silk is connected with the varistor silk that pressure-sensitive film includes.In the present invention, by the cooperation of the first voltage dependent resistor silk and pressure-sensitive film, the impression region of resistance wire is extended, so as to be conducive to improve the ratio of resistance change and pressure valve.In present embodiment, by extending resistance wire active length, it is amplified equivalent to the excitation variable to pressure valve, so as to be conducive to improve the accuracy of pressure valve collection, improves the working performance of pressure sensor.
Description
Technical field
The present invention relates to sensor technical field, more particularly to a kind of pressure amplification sensor.
Background technology
In mechanical pressure sensors field, the sensing element usually using pressure-sensitive film as sensing ambient pressure.It is described
The difference that pressure-sensitive film corresponds to ambient pressure has different resistance values.However, the pressure-sensitive film corresponds to the electricity of ambient pressure
Resistance value and nonlinear change, will influence the accuracy of pressure measurement.
The content of the invention
Based on technical problem existing for background technology, the present invention proposes a kind of pressure amplification sensor.
A kind of pressure amplification sensor proposed by the present invention, including：Gland, pressure-sensitive film, side wall and bottom plate；
Side wall is vertically mounted on bottom plate and forms working chamber around bottom plate, and pressure-sensitive film is installed on side wall parallel to bottom plate
Go up and be located in working chamber；
Gland is installed on side wall and covers working chamber, and gland lower surface is provided with mainstay, and mainstay is located in working chamber simultaneously
Against pressure-sensitive film；
Gland lower surface is also equipped with the first voltage dependent resistor silk, the pressure-sensitive electricity that the first voltage dependent resistor silk includes with pressure-sensitive film
Hinder silk series connection.
Preferably, side wall is made of upper wall and lower wall splicing, and pressure-sensitive film is clamped between upper wall and lower wall.
Preferably, gland is bonded on side wall.
Preferably, mainstay is integrally formed with gland.
Preferably, mainstay is installed on the middle part of gland.
Preferably, mainstay against one end of pressure-sensitive film be cambered surface.
In the present invention, gland is elastic component, and gland is as direct compression face, when pressure sensor works, according to being subject to
Pressure deform upon, and drive mainstay towards pressure-sensitive film move so that pressure of the pressure-sensitive film by mainstay transmission
Deform upon, so that with the deformation of pressure-sensitive film change in resistance occurs for the resistance wire on pressure-sensitive film, pressure-sensitive film
Change in resistance amount as weigh gland pressure valve a measurement standard.First voltage dependent resistor silk becomes with the deformation of gland
Change resistance value, so that the change in resistance of the first voltage dependent resistor silk is as another measurement standard for weighing gland pressure valve.
In this way, by the cooperation of the first voltage dependent resistor silk and pressure-sensitive film, the impression region of resistance wire is extended, so as to have
Beneficial to the ratio for improving resistance change and pressure valve.In present embodiment, by extending resistance wire active length, equivalent to right
The excitation variable of pressure valve is amplified, so as to be conducive to improve the accuracy of pressure valve collection, improves the work of pressure sensor
Make performance.
Brief description of the drawings
Fig. 1 amplifies sensor structure figure for a kind of pressure proposed by the present invention；
Fig. 2 is laid with schematic diagram for the first voltage dependent resistor silk.
Embodiment
With reference to Fig. 1, a kind of pressure amplification sensor proposed by the present invention, including：Gland 1, pressure-sensitive film 2, side wall 3 and bottom
Plate 4.
Side wall 3 is vertically mounted on bottom plate 4 and forms working chamber A around bottom plate 4, i.e. side wall 3 is cooperatively formed with bottom plate 4
Uncovered drum structure.
Pressure-sensitive film 2 is installed on side wall 3 and in the working chamber A parallel to bottom plate 4, and pressure-sensitive film 2 is by working chamber A
Epicoele and cavity of resorption are divided into, epicoele is open close to working chamber A.
Gland 1 is installed on side wall 3 and covers working chamber A, and 1 lower surface of gland is provided with mainstay 5, and mainstay 5 is located at work
In chamber A and against pressure-sensitive film 2.Gland 1 is elastic component, and gland 1 is used as direct compression face, when pressure sensor works, root
Deformed upon according to the pressure being subject to, and drive mainstay 5 to be moved towards pressure-sensitive film 2, so that pressure-sensitive film 2 passes through mainstay 5
The pressure of transmission deforms upon, so that resistance value change occurs with the deformation of pressure-sensitive film 2 for the resistance wire on pressure-sensitive film 2
Change, the change in resistance amount of pressure-sensitive film is as a measurement standard for weighing 1 pressure valve of gland.
1 lower surface of gland is also equipped with the first voltage dependent resistor silk 6, and the first voltage dependent resistor silk 6 becomes with the deformation of gland 1
Change resistance value, so that the change in resistance of the first voltage dependent resistor silk 6 is as another measurement standard for weighing 1 pressure valve of gland.First
Voltage dependent resistor silk 6 is connected with the varistor silk that pressure-sensitive film 2 includes, thus by the first voltage dependent resistor silk 6 and pressure-sensitive film 2
Cooperation, the impression region of resistance wire is extended, so as to be conducive to improve the ratio of resistance change and pressure valve.This embodiment party
In formula, by extending resistance wire active length, be amplified equivalent to the excitation variable to pressure valve, thus be conducive to improve by
The accuracy of pressure value collection, improves the working performance of pressure sensor.
In present embodiment, side wall 3 is made of upper wall 31 and the splicing of lower wall 32, and pressure-sensitive film 2 is clamped in upper wall 31 with
Between wall 32, to ensure the reliable stabilization with work of the installation of pressure-sensitive film 2.Gland 1 is bonded on side wall 3, to ensure to press
Lid 1 and side wall 3 are stablized relatively.
In present embodiment, mainstay 5 is integrally formed with gland 1, and mainstay 5 is installed on the middle part of gland 1, to improve mainstay
5 compression susceptibility, so that the operating accuracy of the raising pressure-sensitive film 2 of indirect.One end of mainstay 5 against pressure-sensitive film 2 is
Cambered surface, to avoid pressure-sensitive film is scratched.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of pressure amplifies sensor, it is characterised in that including：Gland (1), pressure-sensitive film (2), side wall (3) and bottom plate
(4)；
Side wall (3) is vertically mounted on bottom plate (4) and forms working chamber (A) around bottom plate (4), and pressure-sensitive film (2) is the bottom of parallel to
Plate (4) is installed on side wall (3) and in working chamber (A)；
Gland (1) is installed on side wall (3) and covers working chamber (A), and gland (1) lower surface is provided with mainstay (5), mainstay (5)
In the working chamber (A) and against pressure-sensitive film (2)；
Gland (1) lower surface is also equipped with the first voltage dependent resistor silk (6), and the first voltage dependent resistor silk (6) includes with pressure-sensitive film (2)
Varistor silk series connection.
2. pressure as claimed in claim 1 amplifies sensor, it is characterised in that side wall (3) is by upper wall (31) and lower wall (32)
Splicing composition, pressure-sensitive film (2) are clamped between upper wall (31) and lower wall (32).
3. pressure as claimed in claim 1 or 2 amplifies sensor, it is characterised in that gland (1) is bonded on side wall (3).
4. pressure as claimed in claim 1 amplifies sensor, it is characterised in that mainstay (5) is integrally formed with gland (1).
5. pressure as claimed in claim 1 amplifies sensor, it is characterised in that mainstay (5) is installed on the middle part of gland (1).
6. the pressure amplification sensor as described in claim 1 or 4 or 5, it is characterised in that mainstay (5) is against pressure-sensitive film (2)
One end be cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180568.6A CN107976266A (en) | 2017-11-23 | 2017-11-23 | A kind of pressure amplifies sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711180568.6A CN107976266A (en) | 2017-11-23 | 2017-11-23 | A kind of pressure amplifies sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107976266A true CN107976266A (en) | 2018-05-01 |
Family
ID=62011212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711180568.6A Withdrawn CN107976266A (en) | 2017-11-23 | 2017-11-23 | A kind of pressure amplifies sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107976266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112534220A (en) * | 2018-06-11 | 2021-03-19 | 格华卫生有限公司 | Reusable sensor module for use with dispensers of hand hygiene products |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527039A (en) * | 2003-03-07 | 2004-09-08 | 株式会社电装 | Semiconductor pressure sensor with diaphragm |
| CN102390803A (en) * | 2011-08-29 | 2012-03-28 | 常州大学 | High-overload and recoverable pressure sensor and manufacturing method thereof |
| CN104535227A (en) * | 2014-12-22 | 2015-04-22 | 浙江大学 | Press-in type dielectric elastomer pressure sensor |
| CN105938030A (en) * | 2015-03-04 | 2016-09-14 | 精工爱普生株式会社 | Pressure sensor, portable apparatus, electronic apparatus, and moving object |
| CN106482889A (en) * | 2015-08-28 | 2017-03-08 | 鸿富锦精密工业（深圳）有限公司 | Pressure transducer |
-
2017
- 2017-11-23 CN CN201711180568.6A patent/CN107976266A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1527039A (en) * | 2003-03-07 | 2004-09-08 | 株式会社电装 | Semiconductor pressure sensor with diaphragm |
| CN102390803A (en) * | 2011-08-29 | 2012-03-28 | 常州大学 | High-overload and recoverable pressure sensor and manufacturing method thereof |
| CN104535227A (en) * | 2014-12-22 | 2015-04-22 | 浙江大学 | Press-in type dielectric elastomer pressure sensor |
| CN105938030A (en) * | 2015-03-04 | 2016-09-14 | 精工爱普生株式会社 | Pressure sensor, portable apparatus, electronic apparatus, and moving object |
| CN106482889A (en) * | 2015-08-28 | 2017-03-08 | 鸿富锦精密工业（深圳）有限公司 | Pressure transducer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112534220A (en) * | 2018-06-11 | 2021-03-19 | 格华卫生有限公司 | Reusable sensor module for use with dispensers of hand hygiene products |
| US11786082B2 (en) | 2018-06-11 | 2023-10-17 | Gwa Hygiene Gmbh | Re-usable sensor module for use with a dispenser of a hand hygiene product |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180501 |