CN106524895B - A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor - Google Patents
A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor Download PDFInfo
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- CN106524895B CN106524895B CN201610957553.5A CN201610957553A CN106524895B CN 106524895 B CN106524895 B CN 106524895B CN 201610957553 A CN201610957553 A CN 201610957553A CN 106524895 B CN106524895 B CN 106524895B
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- memory alloy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/22—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in capacitance
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a kind of strain detection testing devices of magnetic control shape memory alloy based on capacitance sensor, it is converted into the variation of the parallel plate electrode area of plane-parallel capacitor probe by miniature deformations amounts such as magneto-strains magnetic control memory alloy, displacement is converted to the variable quantity of capacitance.Magnetic memorial alloy is effectively solved by the technical issues of around high-intensity magnetic field is influenced, so that improving it detects accuracy.A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor in the present invention, comprising: the components such as capacitance probe, gear enlarger mechanism (10), input mechanism (11) and output mechanism (9).
Description
Technical field
The present invention relates to technical field of electromechanical control more particularly to a kind of magnetic control shape memory conjunctions based on capacitance sensor
The strain detection testing device of gold.
Background technique
In the research process of magnetic shape memory alloy, need to measure magneto-strain, but there is no dedicated magnetic at present
Property strain testing instrument.When test using existing strain testing instrument, accuracy inevitably will receive magnetism
The influence of high-intensity magnetic field around memorial alloy, this brings big inconvenience to the research of magnetic memorial alloy material.
Summary of the invention
The present invention provides a kind of strain detection testing devices of magnetic control shape memory alloy based on capacitance sensor, pass through handle
The miniature deformations amount such as magneto-strain of magnetic control memory alloy is converted into the variation of the parallel plate electrode area of plane-parallel capacitor probe,
Displacement is converted to the variable quantity of capacitance.Magnetic memorial alloy is effectively solved by the technical issues of around high-intensity magnetic field is influenced,
Accuracy is detected to improve it.
A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor in the present invention, comprising: capacitor
Probe, gear enlarger mechanism 10, input mechanism 11 and output mechanism 9；
The gear enlarger mechanism 10 includes N number of gear set, and each gear set is by installing two differences on the same axis
The gear of reference diameter forms, for realizing the amplification of transmitting step by step of micro-displacement by N number of gear set；
The input unit 11 and the output mechanism 9 are located at the upper and lower part of the gear enlarger mechanism 10, and lead to
It crosses rack gear and engages connection with the gear inside the gear enlarger；
The capacitance probe includes: fixed plate group, movable plate electrode group and guide rail mechanism 17；
The movable plate electrode group is slidably connected with the fixed plate group by guide rail mechanism 17；
The rack gear determines pole with described for pushing movable plate electrode, by the movable plate electrode group that displacive transformation is popped one's head at capacitor
Plate relatively moves, the area of capacitor probe and the variation of capacitance.
Optionally,
The fixed plate group includes fixed plate fixed frame 1 and N number of fixed plate 4 for being fixed on the fixed plate fixed frame 1.
Optionally,
The fixed plate 4 includes metal or the non-conductor through surface metalation.
Optionally,
The fixed plate 4 passes through fixed plate fixed frame 1 and its prominent surface.
Optionally,
The fixed plate 4 passes through fixed plate fixed frame 1 and prominent 3-7mm of its surface.
Optionally,
The movable plate electrode group includes movable plate electrode fixed frame 5 and N number of movable plate electrode 8 for being fixed on the movable plate electrode fixed frame 5.
Optionally,
The movable plate electrode 8 includes metal or the non-conductor through surface metalation.
Optionally,
The movable plate electrode 8 passes through movable plate electrode fixed frame 5 and its prominent surface.
Optionally,
The movable plate electrode 8 passes through movable plate electrode fixed frame 5 and prominent 3-7mm of its surface.
Optionally,
The capacitance probe further include: termination electrode terminal plate 2-3 and 6-7；The electrode connection plate is by substrate 3 and thereon
Several thin copper film 12-15 compositions；
For the relative position by changing termination electrode terminal plate and fixed plate 4 and movable plate electrode 8, to change capacitance probe
Internal multilayer connection type；
When outside thin copper film 12 or outside thin copper film 15 are connected with pole plate, it is respectively formed and is connected in series or in parallel；
When inside thin copper film 13 or inside thin copper film 14 are connect with pole plate, it is respectively formed and is connected in series or in parallel
As can be seen from the above technical solutions, the embodiment of the present invention specifically has the advantage that
Small feature is influenced on capacitor capacitance value according to magnetic field, and one kind is provided and pops one's head in based on capacitor and has gear
Enlarger, test device especially suitable for magnetic control shape memory alloy magneto-strain.By being made of multi-stage gear group
Enlarger, multistage transmitting is carried out to the small magneto-strain that magnetic control memory alloy generates and is amplified, then by rack gear arrangement,
It pushes the movable plate electrode of capacitor probe mobile, changes the area between pole plate, displacive transformation is become to the variation of capacitance.
Detailed description of the invention
Fig. 1 is a kind of strain detection testing device embodiment knot of the magnetic control shape memory alloy based on capacitance sensor of the present invention
Composition；
Fig. 2 is a kind of strain detection testing device embodiment end of the magnetic control shape memory alloy based on capacitance sensor of the present invention
Electrode connection plate schematic diagram；
Fig. 3 is that a kind of strain detection testing device embodiment of the magnetic control shape memory alloy based on capacitance sensor of the present invention is led
Rail mechanism schematic diagram.
Specific embodiment
The present invention provides a kind of strain detection testing devices of magnetic control shape memory alloy based on capacitance sensor, pass through handle
The miniature deformations amount such as magneto-strain of magnetic control memory alloy is converted into the variation of the parallel plate electrode area of plane-parallel capacitor probe,
Displacement is converted to the variable quantity of capacitance.Magnetic memorial alloy is effectively solved by the technical issues of around high-intensity magnetic field is influenced,
Accuracy is detected to improve it.
It please refers to Fig.1 to Fig.3, a kind of strain testing of the magnetic control shape memory alloy based on capacitance sensor in the present invention
Device, comprising: capacitance probe, gear enlarger mechanism 10, input mechanism 11 and output mechanism 9；
The gear enlarger mechanism 10 includes N number of gear set, and each gear set is by installing two differences on the same axis
The gear of reference diameter forms, for realizing the amplification of transmitting step by step of micro-displacement by N number of gear set；
The input unit 11 and the output mechanism 9 are located at the upper and lower part of the gear enlarger mechanism 10, and lead to
It crosses rack gear and engages connection with the gear inside the gear enlarger；
The capacitance probe includes: fixed plate group, movable plate electrode group and guide rail mechanism 17；
The movable plate electrode group is slidably connected with the fixed plate group by guide rail mechanism 17, and movable plate electrode group can be along guide rail mechanism
It is moved on 17, to change the area of electrode for capacitors.
The rack gear determines pole with described for pushing movable plate electrode, by the movable plate electrode group that displacive transformation is popped one's head at capacitor
Plate relatively moves, the area of capacitor probe and the variation of capacitance.
It should be noted that the device is popped one's head in by capacitor, gear enlarger mechanism 10 and appendage form.Capacitor is visited
Head is multilayer parallel plate variable condenser structure, is converted into suitable for miniature deformations amounts such as magneto-strains magnetic control memory alloy
Displacement, is converted to the variable quantity of capacitance by the variation of the parallel plate electrode area of plane-parallel capacitor probe.According to magnetic field pair
Capacitor capacitance value influences small feature, by the enlarger being made of multi-stage gear group, generates to magnetic control memory alloy
Small magneto-strain carries out multistage transmitting amplification, then by rack gear arrangement, pushes the movable plate electrode of capacitor probe mobile, change
Displacive transformation is become the variation of capacitance by the area between pole plate.
A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor further comprises in the present invention:
The fixed plate group includes fixed plate fixed frame 1 and N number of fixed plate 4 for being fixed on the fixed plate fixed frame 1.
The fixed plate 4 includes metal or the non-conductor through surface metalation.
The fixed plate 4 passes through fixed plate fixed frame 1 and prominent 3-7mm of its surface.
It should be noted that fixed plate group is made of fixed plate fixed frame 1 and several fixed plates 4 being fixed on this,
Fixed plate is made of the metal with some strength or the non-conductor through surface metalation, and pole plate passes through fixed frame and its prominent table
Face about 2-7mm, to ensure well to contact with terminal plate.
A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor further comprises in the present invention:
The movable plate electrode group includes movable plate electrode fixed frame 5 and N number of movable plate electrode 8 for being fixed on the movable plate electrode fixed frame 5.
The movable plate electrode 8 includes metal or the non-conductor through surface metalation.
The movable plate electrode 8 passes through movable plate electrode fixed frame 5 and its prominent surface.
The movable plate electrode 8 passes through movable plate electrode fixed frame 5 and prominent 3-7mm of its surface.
It should be noted that movable plate electrode group by movable plate electrode fixed frame 5 and be fixed on this several movable plate electrodes (8 form,
Movable plate electrode 8 is made of the metal with some strength or the non-conductor through surface metalation, and pole plate passes through fixed frame and protrudes it
Surface about 2-7mm, to ensure well to contact with terminal plate.
A kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor further comprises in the present invention:
The capacitance probe further include: termination electrode terminal plate 2-3 and 6-7；The electrode connection plate is by substrate 3 and thereon
Several thin copper film 12-15 compositions；
For the relative position by changing termination electrode terminal plate and fixed plate 4 and movable plate electrode 8, to change capacitance probe
Internal multilayer connection type；
When outside thin copper film 12 or outside thin copper film 15 are connected with pole plate, it is respectively formed and is connected in series or in parallel；
When inside thin copper film 13 or inside thin copper film 14 are connect with pole plate, it is respectively formed several series and parallel mixing
Connection type.
It should be noted that several thin copper film 12-15 groups of the termination electrode terminal plate of capacitor probe by substrate 3 and thereon
At.By the relative position for changing termination electrode terminal plate and fixed plate and movable plate electrode, thus it is possible to vary each layer in multi-layer capacitor
Connection type.When outside thin copper film 12 or outside thin copper film 15 are connected with pole plate, it can be respectively formed and be connected in series or in parallel,
When inside thin copper film 13 or inside thin copper film 14 are connect with pole plate, the connection type of several series and parallel mixing can be formed.
In the strain detection testing device of above-mentioned magnetic control shape memory alloy, the guide rail mechanism of capacitor probe can be one side
Rectangular metal type can also be fixedly mounted with larger rectangular channel, in rectangular channel by one side in insulating materials 17 with rectangular channel
The insulating materials of material 16 forms.Rectangular channel inner surface is conducive to the movement of movable plate electrode on it through polishing or polishing treatment.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
It modifies or replaces, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of strain detection testing device of the magnetic control shape memory alloy based on capacitance sensor characterized by comprising capacitor
Probe, gear enlarger mechanism (10), input mechanism (11) and output mechanism (9)；
The gear enlarger mechanism (10) includes N number of gear set, and each gear set is by installing two differences point on the same axis
The gear composition for spending circular diameter, for realizing the amplification of transmitting step by step of micro-displacement by N number of gear set；
The input unit (11) and the output mechanism (9) are located at the upper and lower part of the gear enlarger mechanism (10), and
Connection is engaged with the gear inside the gear enlarger by rack gear；
The capacitance probe includes: fixed plate group, movable plate electrode group and guide rail mechanism (17)；
The movable plate electrode group is slidably connected with the fixed plate group by guide rail mechanism (17)；
The rack gear for pushing movable plate electrode, send out by the movable plate electrode group and the fixed plate that displacive transformation is popped one's head at capacitor
Raw relative movement, the area of capacitor probe and the variation of capacitance.
2. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 1,
It is characterized in that,
The fixed plate group includes fixed plate fixed frame (1) and N number of fixed plate for being fixed on the fixed plate fixed frame (1)
(4)。
3. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 2,
It is characterized in that,
The fixed plate (4) includes metal or the non-conductor through surface metalation.
4. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 2,
It is characterized in that,
The fixed plate (4) passes through fixed plate fixed frame (1) and its prominent surface.
5. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 4,
It is characterized in that,
The fixed plate (4) passes through fixed plate fixed frame (1) and prominent 3-7mm of its surface.
6. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 1,
It is characterized in that,
The movable plate electrode group includes movable plate electrode fixed frame (5) and N number of movable plate electrode for being fixed on the movable plate electrode fixed frame (5)
(8)。
7. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 6,
It is characterized in that,
The movable plate electrode (8) includes metal or the non-conductor through surface metalation.
8. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 6,
It is characterized in that,
The movable plate electrode (8) passes through movable plate electrode fixed frame (5) and its prominent surface.
9. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 8,
It is characterized in that,
The movable plate electrode (8) passes through movable plate electrode fixed frame (5) and prominent 3-7mm of its surface.
10. a kind of strain detection testing device of magnetic control shape memory alloy based on capacitance sensor according to claim 1,
It is characterized in that,
The capacitance probe further include: termination electrode terminal plate (2-3,6-7)；The electrode connection plate is by substrate (3) and thereon
Several thin copper film (12-15) compositions；
For the relative position by changing termination electrode terminal plate and fixed plate (4) and movable plate electrode (8), to change capacitance probe
Internal multilayer connection type；
When outside thin copper film (12 or 15) is connected with pole plate, it is respectively formed and is connected in series or in parallel；
When inside thin copper film (13 or 14) is connect with pole plate, it is respectively formed the connection type of several series and parallel mixing.
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| CN107102279B (en) * | 2017-05-26 | 2019-06-11 | 东北石油大学 | A kind of magnetic strain measurement method |
| CN108469221B (en) * | 2018-05-29 | 2023-06-02 | 南京铁道职业技术学院 | High-speed railway pantograph carbon slide plate surface damage displacement-charge converter |
| CN108759654B (en) * | 2018-06-27 | 2023-05-30 | 南京铁道职业技术学院 | Transducer for measuring low-recess gap on surface of single-probe pantograph carbon slide plate |
| CN112857557A (en) * | 2021-01-14 | 2021-05-28 | 中国地质大学（武汉） | Auditory sensor based on 4D printing technology shaping |
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| DE3921237A1 (en) * | 1989-06-26 | 1991-01-10 | Bam Bundesanstalt Matforschung | Capacitive deformation sensor for high temp. operation - has two stages of flat, parallel and rectangular, parallel plates forming differential capacitor |
| CN1084636A (en) * | 1993-10-09 | 1994-03-30 | 胡耿 | Capacitive force-sensing element and manufacture method thereof |
| CN2393077Y (en) * | 1999-09-30 | 2000-08-23 | 南京达捷大坝安全技术发展公司 | Differential capacitance type deformation monitoring instrument having self-checking function |
| CN102997837A (en) * | 2012-10-10 | 2013-03-27 | 中国电子科技集团公司第四十九研究所 | Capacitor type superhigh strain sensor |
| CN105783696A (en) * | 2016-04-25 | 2016-07-20 | 天津大学 | Strain sensor based on flexible capacitor and manufacturing and test method thereof |
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- 2016-10-27 CN CN201610957553.5A patent/CN106524895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3921237A1 (en) * | 1989-06-26 | 1991-01-10 | Bam Bundesanstalt Matforschung | Capacitive deformation sensor for high temp. operation - has two stages of flat, parallel and rectangular, parallel plates forming differential capacitor |
| CN1084636A (en) * | 1993-10-09 | 1994-03-30 | 胡耿 | Capacitive force-sensing element and manufacture method thereof |
| CN2393077Y (en) * | 1999-09-30 | 2000-08-23 | 南京达捷大坝安全技术发展公司 | Differential capacitance type deformation monitoring instrument having self-checking function |
| CN102997837A (en) * | 2012-10-10 | 2013-03-27 | 中国电子科技集团公司第四十九研究所 | Capacitor type superhigh strain sensor |
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