CN110196123A - One kind being based on ultra-magnetic telescopic back wash effect pressure sensor - Google Patents
One kind being based on ultra-magnetic telescopic back wash effect pressure sensor Download PDFInfo
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- CN110196123A CN110196123A CN201910397950.5A CN201910397950A CN110196123A CN 110196123 A CN110196123 A CN 110196123A CN 201910397950 A CN201910397950 A CN 201910397950A CN 110196123 A CN110196123 A CN 110196123A
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- 230000000694 effects Effects 0.000 title claims abstract description 15
- 230000001939 inductive effect Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 9
- 239000010959 steel Substances 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 230000004907 flux Effects 0.000 description 7
- 230000003068 static effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910001329 Terfenol-D Inorganic materials 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000005404 magnetometry Methods 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- 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
- G01L1/12—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress
- G01L1/125—Measuring force or stress, in general by measuring variations in the magnetic properties of materials resulting from the application of stress by using magnetostrictive means
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- Measuring Fluid Pressure (AREA)
Abstract
The present invention discloses one kind based on ultra-magnetic telescopic back wash effect pressure sensor, belongs to sensor field.Its structure feature are as follows: overall structure is axisymmetric cylindrical structure, enclosure interior is equipped with housing, inside be disposed adjacent every magnetic cylinder with every magnetic end cap, be provided with through-hole at magnetic cylinder center, it is set as upper magnetizer on the right side of magnetic cylinder interior, is set as lower magnetizer on the left of magnetic end cap；Coil rack is used to coiling bias coil, and giant magnetostrictive rod is equipped with inside coil rack, and super magnetic is set and is equipped with magnetic conduction gasket on the right side of extension stem, is equipped on the right side of magnetic conduction gasket every magnet steel ring, internal stickup and fixed Hall sensor；Magnetic inductive block is installed on the left of giant magnetostrictive rod, mandril is each passed through through-hole, preloading spring and pretension bolt, between there are micro gap, magnetic inductive block, upper magnetizer, cylinder magnetic yoke and lower magnetizer form the magnetic circuit of closure；Fixation is connected through a screw thread between pretension bolt and end cap, end cap is connected and fixed with shell by interior grooved screw, and the structure inside protection is played.Structure of the invention is compact, solid and reliable.
Description
Technical field
The invention belongs to sensor fields, and in particular to one kind is based on ultra-magnetic telescopic back wash effect pressure sensor.
Background technique
Pressure sensor industrially has a wide range of applications, and has at present than more typical pressure sensor: piezoelectric type pressure
Force snesor, capacitance pressure transducer, resistance strain type pressure sensor.Piezoelectric pressure indicator is based on piezoelectric material
Piezoelectric effect production sensor, since the output of piezoelectric pressure indicator is the faint quantity of electric charge, so must be additional
Voltage amplifier, and voltage and external cable type are related with length, so actual use is inconvenient.Capacitive pressure sensing
Device is a kind of contactless sensor, since the variation of the capacitance of capacitance pressure transducer, is very small, need
The signal amplification circuit for wanting additional complexity, so test macro is complex.Resistance strain type pressure sensor is a kind of will to answer
Become piece to be pasted on tested test specimen or on flexible sensor, therefore, the physical property of adhesive will directly affect
The characteristic of strain gauge, is easy to produce measurement error.
Giant magnetostrictive material is known as 21 century High-tech strategy resource material by its various features, its energy turns
Rate is high and the reversible transition between electromagnetism and mechanical energy may be implemented, while having ultrafast response speed, power output again
Greatly, the features such as load capacity is strong, it is the functional material that another is emerging after the materials such as permanent magnetism, magneto-optic, high-temperature superconductor, benefit
Preparing sensor with super magnetic magnetostrictive reaction is the research hotspot occurred in recent years.Change in magnetic flux density is magnetostriction materials
One feature of back wash effect, Hebei University of Technology Fan grow et al. according to giant magnetostrictive rod change in magnetic flux density the characteristics of development
Magnetostriction force sensor, and the variation of magnetic flux density after stress is measured with Tesla meter, effect is preferable, but since leakage field is tight
Weight, error are larger.The method of measurement magnetic flux density is more at present, mainly has: superconduction magnetometry, fluxgate magnetometer method, optical pumping
Magnetometry.These survey magnetism methods or price is higher or implement complex in practice.
Summary of the invention
To solve the problems mentioned above in the background art, the purpose of the present invention is to provide one kind to be based on ultra-magnetic telescopic
Back wash effect pressure sensor, this pressure sensor structure is simple, and the service life is long, and load capacity is strong, easy to maintain, fast response time,
Adapt to harsh environments.It is applied with closed magnetic circuit device simultaneously and prevents leakage field device, realizes that sensor signal test is accurate.
By Hall sensor detection ultra-magnetic telescopic Terfenol-D be under pressure change when magnetic flux density variation, and the variation
It is converted into the output of voltage signal, realizes the measurement of static force and static displacement.
To achieve the above object, the invention provides the following technical scheme: a kind of passed based on ultra-magnetic telescopic back wash effect pressure
Sensor, including end cap, shell, housing, every magnetic cylinder, connecting terminal and every magnetic end cap, the enclosure interior is equipped with housing, and
Transmission of electricity hole is provided at shell side, the transmission of electricity hole is used to connect connecting terminal, jacket internal and adjacent be respectively arranged with every
Magnetic cylinder and every magnetic end cap, is provided with through-hole, and be equipped with upper magnetizer every magnetic cylinder interior, every magnetic end cap at magnetic cylinder center
Left side is equipped with lower magnetizer, be respectively arranged with from outside to inside between upper magnetizer and lower magnetizer cylinder magnetic yoke, bias coil,
Coil rack and giant magnetostrictive rod, coil rack is used to coiling bias coil, and is equipped with super mangneto inside coil rack and stretches
Contracting stick, super magnetic are set and are equipped with magnetic conduction gasket on the right side of extension stem, is equipped on the right side of magnetic conduction gasket every magnet steel ring, every magnet steel ring viscous
Hall sensor is pasted and fixed, and magnetic inductive block is installed on the left of giant magnetostrictive rod, magnetic inductive block for connecting mandril, wear respectively by mandril
Cross through-hole, preloading spring and pretension bolt, between there are micro gap, be connected through a screw thread between pretension bolt and end cap
Fixed, end cap is connected and fixed with shell by interior grooved screw, and magnetic inductive block, upper magnetizer, cylinder magnetic yoke, lower magnetizer form closure
Magnetic circuit, every magnetic cylinder, every magnetic end cap, mandril be packaged into one closure every magnetic loop.
Preferably, described end cap one end four interior grooved screw connections and shell, and delivery outlet is provided at end cap central, institute
The outer diameter for stating end cap delivery outlet and pretension bolt is threadedly coupled.
Preferably, the mandril is forge piece of step type structure, mandril one end by pretension bolt, and between with preloading spring phase
Even, there are micro gaps between, pass through being threadedly engaged between adjusting pretension bolt and the end cap with screw thread delivery outlet
Length changes the decrement of preloading spring, power is passed to mandril, then acts on giant magnetostrictive rod, and then realize to pre-
Clamp force facilitates adjusting.
Preferably, the bias coil provides bias magnetic field.
Preferably, it is described every magnetic cylinder with every magnetic end cap by being connected every circular ring slot on magnetic end cap, circular ring slot
Deep 5mm, wide 5mm.
Compared with prior art, beneficial effects of the present invention are as follows:
The present invention has many advantages, such as that load capacity is strong, precision is high, fast response time using giant magnetostrictive material.Bias magnetic
Field is provided using the current excitation that bias coil generates, and bias coil has adjustability, when needing to be tested repeatedly, partially
Bias magnetic field needed for setting coil working sensor being provided, it is easy to operate, while being applied with closed magnetic circuit dress
Leakage field device is set and prevented, realizes that sensor signal test is accurate.Detection device uses Hall sensor, and Hall sensor is basic
Characteristic is preferable, and operation logic and structure are simple, at low cost, is easy to the features such as compatible with microelectronic circuit.It is examined by Hall sensor
Survey ultra-magnetic telescopic Terfenol-D be under pressure change when magnetic flux density variation, and the variation is converted into voltage signal
Output, realize static force and static displacement measurement.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the present invention；
Fig. 2 is bias unit schematic diagram of the present invention；
Fig. 3 is the relationship of giant magnetostrictive rod relative permeability and magnetic field strength of the present invention；
Fig. 4 is measuring device schematic diagram of the present invention；
Fig. 5 is overall structure of the present invention；
Fig. 6 is schematic view of the front view of the invention；
Fig. 7 is the partial enlarged view in Fig. 1 of the present invention at A.
In figure: 1- end cap；2- shell；3- housing；4- is every magnetic cylinder；5- connecting terminal；6- is every magnetic end cap；Magnetic conduction under 7-
Body；8- coil rack；9- is every magnet steel ring；10- Hall sensor；11- magnetic conduction gasket；12- bias coil；The logical magnetic yoke of 13- circle；
14- giant magnetostrictive rod；15- magnetic inductive block；The upper magnetizer of 16-；17- preloading spring；Grooved screw in 18-；19- pretension bolt；20-
Mandril；First conducting wire of 21-；Second conducting wire of 22-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-7 is please referred to, the present invention provides a kind of technical solution: one kind is based on ultra-magnetic telescopic back wash effect pressure sensing
Device, including end cap 1, shell 2, housing 3, every magnetic cylinder 4, connecting terminal 5 and every magnetic end cap 6, it is characterised in that: the shell 2
Inside is equipped with housing 3, and transmission of electricity hole is provided at 2 side of shell, and the transmission of electricity hole is used to connect connecting terminal 5, inside housing 3
And adjacent is respectively arranged with every magnetic cylinder 4 and every magnetic end cap 6, through-hole is provided at 4 center of magnetic cylinder, and every in magnetic cylinder 4
Portion is equipped with magnetizer 16, lower magnetizer 7 is equipped on the left of magnetic end cap 6, by outer between upper magnetizer 16 and lower magnetizer 7
It is respectively arranged with cylinder magnetic yoke 13, bias coil 12, coil rack 8 and giant magnetostrictive rod 14 to inner, coil rack 8 is used to
Coiling bias coil 12, and giant magnetostrictive rod 14 is installed inside coil rack 8, super magnetic is set to be equipped on the right side of extension stem 14 and be led
Magnetic insert 11 is equipped with every magnet steel ring 9 on the right side of magnetic conduction gasket 11, is pasted inside magnet steel ring 9 and fixed Hall sensor 10,
And magnetic inductive block 15 is installed on the left of giant magnetostrictive rod 14, magnetic inductive block 15 for connecting mandril 20, mandril 20 be each passed through through-hole,
Preloading spring 17 and pretension bolt 19, between there are micro gaps, be connected through a screw thread between pretension bolt 19 and end cap 1
Fixed, end cap 1 is connected and fixed with shell 2 by interior grooved screw 18, magnetic inductive block 15, upper magnetizer 16, cylinder magnetic yoke 13, lower magnetic conduction
Body 7 formed closure magnetic circuit, every magnetic cylinder 4, every magnetic end cap 6, mandril 20 be packaged into one closure every magnetic loop.
Bias unit:
The magnetostrictive reaction of giant magnetostrictive rod and the bias magnetic field of application are related in this sensor.Bias magnetic field is not
The sensitivity for only improving sensor, makes giant magnetostrictive rod reach proper operation point.And in the structure for determining other magnetic cells
It will be according to the just bias magnetic field of giant magnetostrictive rod and the prestressing force of application when size.The bias magnetic field of this pressure sensor by
Bias coil provides, and bias coil has adjustability, and when needing to be tested repeatedly, bias coil can provide sensor work
Bias magnetic field needed for making, it is easy to operate.
For the giant magnetostrictive material of different manufacturers, the characteristic of relative permeability and bias magnetic field and prestressing force relationship
It is different.Specific giant magnetostrictive material is made a concrete analysis of, the bias magnetic field and prestressing force of best operating point are found out,
To determine the structure of this pressure sensor.The relationship of the giant magnetostrictive rod relative permeability and magnetic field strength that are provided according to producer
(referring to Fig. 3), bias magnetic field are easily selected in 1KA/m ∽ 25KA/m.
Measuring device:
Measuring device uses Hall sensor, uses around Hall sensor every magnet steel ring.Hall sensor is substantially special
Property it is preferable, operation logic and structure are simple, at low cost, are easy to the features such as compatible with microelectronic circuit.It is detected by Hall sensor
Ultra-magnetic telescopic Terfenol-D be under pressure change when magnetic flux density variation, and the variation is converted into voltage signal
Output, realizes the measurement of static force.At the same time it can also measured static displacement.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. one kind be based on ultra-magnetic telescopic back wash effect pressure sensor, including end cap (1), shell (2), housing (3), every magnetic cylinder
(4), connecting terminal (5) and every magnetic end cap (6), it is characterised in that: is equipped with housing (3) inside the shell (2), and shell
(2) transmission of electricity hole is provided at side, the transmission of electricity hole is for connecting connecting terminal (5), and housing (3) is internal and adjacent is respectively set
Have every magnetic cylinder (4) and every magnetic end cap (6), through-hole is provided at magnetic cylinder (4) center, and be equipped with inside magnetic cylinder (4)
Upper magnetizer (16) is equipped with lower magnetizer (7) on the left of the magnetic end cap (6), between upper magnetizer (16) and lower magnetizer (7) by
It arrives outside and inner is respectively arranged with cylinder magnetic yoke (13), bias coil (12), coil rack (8) and giant magnetostrictive rod (14), coil
Skeleton (8) is used to coiling bias coil (12), and is equipped with giant magnetostrictive rod (14) inside coil rack (8), and super magnetic, which is set, to be stretched
It is equipped with magnetic conduction gasket (11), is equipped on the right side of magnetic conduction gasket (11) every magnet steel ring (9), every magnet steel ring (9) on the right side of contracting stick (14)
Inside pastes and fixes Hall sensor (10), and installs magnetic inductive block (15) on the left of giant magnetostrictive rod (14), magnetic inductive block (15)
For connecting mandril (20), mandril (20) is each passed through through-hole, preloading spring (17) and pretension bolt (19), between there are micro-
The gap of amount, is connected through a screw thread fixation between pretension bolt (19) and end cap (1), end cap (1) and shell (2) pass through inside groove spiral shell
Nail (18) is connected and fixed, and magnetic inductive block (15), upper magnetizer (16), cylinder magnetic yoke (13), lower magnetizer (7) form the magnetic of closure
Road, every magnetic cylinder (4), every magnetic end cap (6), mandril (20) be packaged into one closure every magnetic loop.
2. according to claim 1 a kind of based on ultra-magnetic telescopic back wash effect pressure sensor, it is characterised in that: the end
It covers (1) one end and connects shell (2) with four interior grooved screws (18), and be provided with delivery outlet at end cap (1) center, the end cap (1)
The outer diameter of delivery outlet and pretension bolt (19) is threadedly coupled.
3. according to claim 1 a kind of based on ultra-magnetic telescopic back wash effect pressure sensor, it is characterised in that: the top
Bar (20) is forge piece of step type structure, mandril (20) one end by pretension bolt (19), and between be connected with preloading spring (17), it
Between there are micro gap, by adjust pretension bolt (19) with there is screw thread delivery outlet end cap (1) between being threadedly engaged
Length changes the decrements of preloading spring (17), and power is passed to mandril (20), then acts on giant magnetostrictive rod (14),
And then it realizes and adjusting is facilitated to pretightning force.
4. according to claim 1 a kind of based on ultra-magnetic telescopic back wash effect pressure sensor, it is characterised in that: described inclined
It sets coil (12) and bias magnetic field is provided.
A kind of be based on ultra-magnetic telescopic back wash effect pressure sensor 5. according to claim 1, it is characterised in that: it is described every
Magnetic cylinder (4) with every magnetic end cap (6) by being connected every circular ring slot on magnetic end cap (6), circular rings groove depth 5mm, wide 5mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910397950.5A CN110196123A (en) | 2019-05-14 | 2019-05-14 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910397950.5A CN110196123A (en) | 2019-05-14 | 2019-05-14 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
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| CN110196123A true CN110196123A (en) | 2019-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051528A (en) * | 2020-08-06 | 2020-12-08 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
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|---|---|---|---|---|
| CN1570381A (en) * | 2004-04-30 | 2005-01-26 | 北京联合大学 | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material |
| CN102025288A (en) * | 2010-11-26 | 2011-04-20 | 大连理工大学 | Giant magnetostrictive actuator with permanet torque output and control method thereof |
| CN102817957A (en) * | 2012-09-05 | 2012-12-12 | 北京交通大学 | Self-adaption piezomagnetic magnetorheological damper |
| CN209589305U (en) * | 2019-05-14 | 2019-11-05 | 安徽理工大学 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
-
2019
- 2019-05-14 CN CN201910397950.5A patent/CN110196123A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570381A (en) * | 2004-04-30 | 2005-01-26 | 北京联合大学 | Hydraulic pump directly driven by actuator made of rare earth super magnetostrictive material |
| CN102025288A (en) * | 2010-11-26 | 2011-04-20 | 大连理工大学 | Giant magnetostrictive actuator with permanet torque output and control method thereof |
| CN102817957A (en) * | 2012-09-05 | 2012-12-12 | 北京交通大学 | Self-adaption piezomagnetic magnetorheological damper |
| CN209589305U (en) * | 2019-05-14 | 2019-11-05 | 安徽理工大学 | One kind being based on ultra-magnetic telescopic back wash effect pressure sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051528A (en) * | 2020-08-06 | 2020-12-08 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
| CN112051528B (en) * | 2020-08-06 | 2021-11-02 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
| CN113805127A (en) * | 2020-08-06 | 2021-12-17 | 钢铁研究总院 | Magnetostrictive material performance testing device and method |
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