CN106644832A - Viscosity detection sensor based on double piezoelectric coupling - Google Patents
Viscosity detection sensor based on double piezoelectric coupling Download PDFInfo
- Publication number
- CN106644832A CN106644832A CN201710075589.5A CN201710075589A CN106644832A CN 106644832 A CN106644832 A CN 106644832A CN 201710075589 A CN201710075589 A CN 201710075589A CN 106644832 A CN106644832 A CN 106644832A
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- China
- Prior art keywords
- quartz crystal
- piezoelectric quartz
- fastening
- positioning base
- detection sensor
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title abstract description 8
- 238000010168 coupling process Methods 0.000 title abstract description 4
- 230000008878 coupling Effects 0.000 title abstract 2
- 238000005859 coupling reaction Methods 0.000 title abstract 2
- 239000013078 crystal Substances 0.000 claims abstract description 55
- 239000010453 quartz Substances 0.000 claims abstract description 51
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 210000004907 gland Anatomy 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 8
- 230000010358 mechanical oscillation Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 12
- 239000000523 sample Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
Abstract
The invention discloses a viscosity detection sensor based on double piezoelectric coupling and belongs to the technical field of viscosity detection. The viscosity detection sensor is characterized in that a piezoelectric quartz crystal is fastened in a clamping position in a supporting seat; a mechanical vibration conducting column is cemented between an output unit and a feedback unit; the output unit and the feedback unit are arranged in an insulation clamping position on the supporting seat on which the piezoelectric quartz crystal is fastened; fixing holes for a screw to penetrate through are formed in a mounting supporting and positioning gland and a mounting supporting and positioning base; the mounting supporting and positioning base is provided with a clamping position for mounting an elastic member; the elastic member is pressed into the mounting supporting and positioning base by the mounting supporting and positioning gland; the mounting supporting and positioning gland is fastened with the mounting supporting and positioning base. The viscosity detection sensor has the beneficial effects that a piezoelectric quartz crystal fastener is reasonably distributed, so that directional flowing of air is facilitated and the influence of air current on inspection is reduced; in addition, the piezoelectric quartz crystal fastener has insulating and electromagnetic shielding functions, and the influence of objective factors on a test result is eliminated. According to the viscosity detection sensor disclosed by the invention, a circular elastic member is designed, so that the aseismic function of the system is enhanced, mechanical vibration is reduced to the maximum extent, and the influence of outside on the test result is reduced.
Description
Technical field
The invention belongs to viscosity measurements technical field, and in particular to biology, chemical industry, medical treatment, the improvement of environment measuring equipment.
Background technology
In recent years, viscosity measurement is widely used in the fields such as oil, coating, food, biochemistry, medicine, material and chemical industry,
The assessment of performance of its quality control and final products to production link plays an important role, and improves the accuracy of viscosity measurement
Higher economic worth and social value can be created.
Traditional Viscosity Measurement Methods have developed relative maturity, mainly including falling ball method, rotary process, capillary tube method etc..Fall
Ball mainly by measuring falling bodies and determining by the two fixed points time used viscosity, but due to using manual stopwatch timing,
And the visual persistence effect of people affects, and can bring timing error to experimental result；Rotary process is mainly made by measurement fluid
The rotating speed of viscosity torque or object for object by the way of pointer reading, is made stable determining the viscosity of liquid
Property and accuracy of reading are somewhat limited；Though capillary tube method is used as a kind of very practical Viscosity Measurement Methods, because of it
The restriction of structure, is easily blocked by small particle, and cleaning-drying is bothered very much.Above method is respectively from different angles to quilt
Test sample this viscosity is measured, but cannot provide accurate measurement data mostly, and Part Methods environmental condition is required it is non-
Often harsh, distance field application also has very big distance.
The content of the invention
The purpose of the present invention is：A kind of viscosity measurements sensor coupled based on double piezoelectricity is provided, it is brilliant by piezoelectric quartz
The direct piezoelectric effect of body, using double piezoelectricity coupling techniques, measurand electricity is converted in combination with inverse piezoelectric effect
Signal output.
The technical scheme is that：Shaken by miniature probe, piezoelectric quartz crystal fastening upper press cover, output unit, machinery
Dynamic conductive post, piezoelectric quartz crystal fastening support seat, feedback unit, piezoelectric quartz crystal fastening lower cover, installation support positioning
Gland, elastic component, installation support positioning base composition.
In the presence of external high-frequency pumping signal there is axial oscillation in starting of oscillation unit, using two kinds of piezoelectric quartz crystal
Effect, by the variable quantity of tested sample viscosity the variable quantity of voltage is converted into, by this method indirect detection detected sample body
The viscosity change law of system, this rule is by by the reception of feedback unit, the tested sample viscosity being ultimately converted to needed for testing
Data.
Piezoelectric quartz crystal is fastened in the screens of the installation piezo-electric crystal that support base is provided with, in piezoelectric quartz crystal fastening
Gland, piezoelectric quartz crystal fastening support seat and piezoelectric quartz crystal fastening lower cover is equipped with the fixing hole passed through for screw,
Mechanical oscillation conductive post is glued between output unit and feedback unit, and it is brilliant that output unit is positioned over piezoelectric quartz with feedback unit
In insulation screens on body fastening support seat, piezoelectric quartz crystal is fastened by upper press cover, output unit, machinery by screw successively and is shaken
Dynamic conductive post, piezoelectric quartz crystal fastening support seat, feedback unit, elastic component and piezoelectric quartz crystal fastening lower cover is passed through
And fasten；Install and support positioning gland to support positioning base to be provided with the fixing hole passed through for screw with installing, wherein install supporting
Positioning base is provided with the screens for installing elastic component, supports positioning gland that elastic component press-in installation is supported into positioning bottom by installing
In seat, will be installed by screw and support positioning gland to support positioning base fastening with installing.
The invention has the beneficial effects as follows：To piezoelectric quartz crystal securing member rational deployment, be conducive to air guided flowing,
Reduce air-flow to check impact, and piezoelectric quartz crystal securing member have insulation and be electromagnetically shielded function, eliminate it is objective because
Impact of the element to test result；The present invention devises circular spring member, enhances the function of seismic resistance of system, farthest subtracts
Gadget vibrates, and reduces the impact of outer bound pair test result；Small volume of the present invention, it is lightweight, be convenient for carrying, appearance design is big
Side, facilitates later stage sensor to upgrade and for other test devices.
Description of the drawings
Fig. 1 is assembling assumption diagram of the present invention.
Fig. 2 is axonometric drawing of the present invention.
Fig. 3 is elastic component schematic diagram of the present invention.
Specific embodiment
Embodiment 1
The present invention is described further below in conjunction with the accompanying drawings：
As illustrated, wherein, 1 it is miniature probe, 2 is piezoelectric quartz crystal fastening upper press cover, 3 is output unit, 4 is that machinery shakes
Dynamic conductive post, 5 be piezoelectric quartz crystal fastening support seat, 6 be feedback unit, 7 be piezoelectric quartz crystal fastening lower cover, 8 be
Install support positioning gland, 9 be elastic component, 10 be install support positioning base.
The miniature probe 1 is glued in the surface of output unit 3, for transmitting and feeding back tested sample viscosity change law letter
Number；The piezoelectric quartz crystal fastening support seat 5 is provided with the screens for installing piezo-electric crystal, and piezoelectric quartz crystal fastening and presses
Lid 2, piezoelectric quartz crystal fastening support seat 5 are equipped with the fixing hole passed through for screw with piezoelectric quartz crystal fastening lower cover 7,
Mechanical oscillation conductive post 4 is glued between output unit 3 and feedback unit 6, and the output unit 3 is positioned over feedback unit 6
In insulation screens on piezoelectric quartz crystal fastening support seat 5, piezoelectric quartz crystal is fastened by upper press cover 2, defeated by screw successively
Go out unit 3, mechanical oscillation conductive post 4, piezoelectric quartz crystal fastening support seat 5, feedback unit 6, elastic component 9 and piezoelectric quartz
Crystal fastening lower cover 7 is passed through and fastened；Described installation supports positioning gland 8 and installation support positioning base 10 to be provided with and supply screw
The fixing hole for passing through, wherein install supporting positioning base 10 to be provided with the screens for installing elastic component 9, by installing positioning gland is supported
Elastic component 9 is pressed into installation by 8 to be supported in positioning base 10, will be installed by screw and is supported positioning gland 8 to support positioning with installing
Base 10 is fastened.
In this example, the sensor also includes some enamel-covered wires, and one end of enamel-covered wire is welded in output unit 3, feedback
On unit 6, the other end extends outer end.
In this example, above-mentioned miniature probe 1, piezo-electric crystal fastening upper press cover 2, mechanical oscillation conductive post 4, piezoelectric quartz are brilliant
Body fastening support seat 5, the piezoelectric quartz crystal fastening material of lower cover 7 is resin material.
In this example, above-mentioned miniature probe 1 is glued and is glued in output in the surface of output unit 3 and mechanical oscillation conductive post 4
Glue used is epoxide-resin glue between unit 3 and feedback unit 6.
In this example, described above installation supports the inner side of positioning base 10 to be provided with an annular groove, the elastic component 9
Periphery be contained in the groove, support positioning gland 8 to limit to move up while mounted, i.e., by the way of periphery fixation.
In this example, above-mentioned output unit 3 is piezoelectric quartz crystal with feedback unit 6, and face shaping is circle, and area is little
In the area of piezo-electric crystal fastening support seat 5.
In this example, above-mentioned elastic component 9 is shaped grooved elastic component.
In this example, a kind of blood viscosity detection sensor preparation method based on double piezoelectricity coupling techniques includes following step
Suddenly：
Step one：The fixed end face of miniature probe 1 is glued with an end face of output unit 3, then output unit 3
It is positioned in the side annular groove of piezo-electric crystal fastening support seat 5, is internally provided with placing screens.
Step 2：One end face of mechanical oscillation conductive post 4 is glued with an end face of output unit 3, it is another
Individual end face is glued with an end face of feedback unit 6, and feedback unit 6 is positioned over piezo-electric crystal fastening support seat 5
In opposite side annular groove, it is again provided with placing screens inside it.
Step 3：Piezoelectric quartz crystal fastening upper press cover 2 is pacified with the side of piezoelectric quartz crystal fastening support seat 5
Dress, piezoelectric quartz crystal fastening upper press cover 2 is provided with installation locating surface, by elastic component 9 and piezoelectric quartz crystal fastening support seat 5
Opposite side installed, and by piezoelectric quartz crystal fasten lower cover 7 installation locating surface compressed.
Step 4：Piezoelectric quartz crystal is fastened by upper press cover 2, piezoelectric quartz crystal fastening support seat 5 and pressure by rotation
Electric quartz crystal fastening lower cover 7 aligns with the fixing screw hole on elastic component 9, is carried out above-mentioned four workpiece tightly with screw
Gu, limit it and vertically move.
Step 5：The outer ring of elastic component 9 is positioned over and is installed in the outer annular groove for supporting positioning base 10, it is internal
Installation screens is provided with, supports positioning gland 8 to be compressed with installing, installed and support positioning gland 8 to be provided with installation end face.
Step 6：To be installed by rotation and support positioning gland 8, the fixing screw hole pair supported on positioning base 10
Together, above-mentioned two workpiece is fastened with screw, limits it and vertically move.
In this example, elastic component 9 described in above-mentioned steps is shaped grooved elastic component.
In this example, install described in above-mentioned steps and support the inner side of positioning base 10 to be provided with an annular groove, the elasticity
The periphery of component 9 is contained in the groove, while mounted support positioning gland 8 limits it and moves up.
In this example, elastic component 9 described in above-mentioned steps is equipped with the fixing hole passed through for screw for interior.
In this example, the inner side of piezo-electric crystal fastening support seat 5 is provided with second ring groove, the output described in above-mentioned steps
Unit 3 is contained in the groove with the periphery of feedback unit 6, while brilliant by piezoelectric quartz crystal fastening upper press cover 2 and piezoelectric quartz
Body fastening lower cover 7 limits the movement of its vertical direction.
Claims (1)
1. a kind of viscosity measurements sensor coupled based on double piezoelectricity, is characterized in that：Piezoelectric quartz crystal is fastened on support base and sets
In some screens for installing piezo-electric crystal, piezoelectric quartz crystal fastening upper press cover, piezoelectric quartz crystal fastening support seat and piezoelectricity
Quartz crystal fastening lower cover is equipped with the fixing hole passed through for screw, and mechanical oscillation conductive post is glued in output unit and feedback
Between unit, output unit is positioned in the insulation screens on piezoelectric quartz crystal fastening support seat with feedback unit, by screw
Successively by piezoelectric quartz crystal fasten upper press cover, output unit, mechanical oscillation conductive post, piezoelectric quartz crystal fastening support seat,
Feedback unit, elastic component and piezoelectric quartz crystal fastening lower cover is passed through and fastened；Install and support positioning gland to prop up with installing
Support positioning base is provided with the fixing hole passed through for screw, wherein install support positioning base to be provided with the screens for installing elastic component,
By install support positioning gland by elastic component press-in install support positioning base in, by screw will install support positioning gland with
Install and support positioning base fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710075589.5A CN106644832A (en) | 2017-02-13 | 2017-02-13 | Viscosity detection sensor based on double piezoelectric coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710075589.5A CN106644832A (en) | 2017-02-13 | 2017-02-13 | Viscosity detection sensor based on double piezoelectric coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106644832A true CN106644832A (en) | 2017-05-10 |
Family
ID=58844799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710075589.5A Pending CN106644832A (en) | 2017-02-13 | 2017-02-13 | Viscosity detection sensor based on double piezoelectric coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106644832A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811593A (en) * | 1986-11-27 | 1989-03-14 | Yamaichi Electric Mfg. Co., Ltd. | Viscosity detector |
| US5710374A (en) * | 1995-04-06 | 1998-01-20 | University Of Virginia Patent Foundation | Electronic viscometer |
| US5723771A (en) * | 1995-03-13 | 1998-03-03 | Yamaichi Electronics Co., Ltd. | Vibratory liquid detector |
| KR20090029353A (en) * | 2007-09-18 | 2009-03-23 | 현대자동차주식회사 | Measuring apparatus and method for viscosity variation of engine oil by torsional vibration |
| US20130205875A1 (en) * | 2010-07-16 | 2013-08-15 | Cornell University | Ultrasonic horn actuated microprobes based self-calibrating viscosity sensor |
| CN103558367A (en) * | 2013-11-19 | 2014-02-05 | 长春理工大学 | System and method for measuring electrical characteristics of biological cells through nano-electrode array under physiological conditions |
| CN207336298U (en) * | 2017-02-13 | 2018-05-08 | 长春理工大学 | Viscosity measurements sensor based on the coupling of double piezoelectricity |
-
2017
- 2017-02-13 CN CN201710075589.5A patent/CN106644832A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4811593A (en) * | 1986-11-27 | 1989-03-14 | Yamaichi Electric Mfg. Co., Ltd. | Viscosity detector |
| US5723771A (en) * | 1995-03-13 | 1998-03-03 | Yamaichi Electronics Co., Ltd. | Vibratory liquid detector |
| US5710374A (en) * | 1995-04-06 | 1998-01-20 | University Of Virginia Patent Foundation | Electronic viscometer |
| KR20090029353A (en) * | 2007-09-18 | 2009-03-23 | 현대자동차주식회사 | Measuring apparatus and method for viscosity variation of engine oil by torsional vibration |
| US20130205875A1 (en) * | 2010-07-16 | 2013-08-15 | Cornell University | Ultrasonic horn actuated microprobes based self-calibrating viscosity sensor |
| CN103558367A (en) * | 2013-11-19 | 2014-02-05 | 长春理工大学 | System and method for measuring electrical characteristics of biological cells through nano-electrode array under physiological conditions |
| CN207336298U (en) * | 2017-02-13 | 2018-05-08 | 长春理工大学 | Viscosity measurements sensor based on the coupling of double piezoelectricity |
Non-Patent Citations (1)
| Title |
|---|
| 中国医学创新杂志社 编, 科学技术文献出版社 * |
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Application publication date: 20170510 |
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