CN103513194B - A kind of waveguide-coupled magnetoelectronic devices - Google Patents
A kind of waveguide-coupled magnetoelectronic devices Download PDFInfo
- Publication number
- CN103513194B CN103513194B CN201310465754.XA CN201310465754A CN103513194B CN 103513194 B CN103513194 B CN 103513194B CN 201310465754 A CN201310465754 A CN 201310465754A CN 103513194 B CN103513194 B CN 103513194B
- Authority
- CN
- China
- Prior art keywords
- waveguide
- magnetic field
- soft magnetic
- ferrite
- electret film
- 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.)
- Expired - Fee Related
Links
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 230000005690 magnetoelectric effect Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
Landscapes
- Measuring Magnetic Variables (AREA)
Abstract
The present invention proposes a kind of waveguide-coupled magnetoelectronic devices, be made up of magnet steel (1), soft magnetic ferrite (2), organic waveguide (3) and electret film (4), combine closely between them and focused on by organic waveguide and transmit sound field.Device is self-power generation type, not only has the advantage that cost is low and simple for structure, and higher to the susceptibility in magnetic field, greatly widens the frequency response range in magnetic field.
Description
Technical field
The present invention utilizes organic waveguide to transmit sound field, and soft magnetic ferrite and electret film are combined obtained magnetoelectronic devices.When being subject to extraneous low-intensity magnetic field perturbation, soft magnetic ferrite generation respective frequencies is vibrated, and vibration sound field is delivered to electret film by organic waveguide, namely has corresponding voltage to produce, can realize the object to weak magnetic measurement.The invention belongs to magneto-electronics technical field.
Background technology
Magnetoelectric effect is that material produces electropolarized phenomenon under the influence of a magnetic field, and the material of its correspondence has broad application prospects in sensor field, can be used for switching energy, transducing signal, detects magnetic field etc.Namely magnetoelectricity laminate and Hall element etc. belong to this row, and wherein magnetoelectricity laminate is obtained by laminated by rare earth giant magnetostrictive material and piezoelectric ceramics.
Can measure in the material in magnetic field several, magnetoelectricity laminate not only cost is low, and size is little, and much higher to the susceptibility in magnetic field, is more preferably selecting of magneto-dependent sensor.In addition, to need to consume electric energy as sensor different from Hall element or giant magnetoresistance, and magnetoelectricity laminate is the sensor of self-power generation type, do not need electric power to input and directly can produce electricity and export in sensing process.But magnetoelectricity laminate carries out Stress transmit by interface, and deformation is uneven, and coupling state is undesirable, and owing to adopting thickness and all larger piezoelectric ceramics of elastic modulus, little to the frequency response range in magnetic field.
Summary of the invention
The technical matters solved:
The present invention proposes the mode that a kind of waveguide-coupled forms magnetoelectronic devices, focused on by organic waveguide and transmit sound field, self-power generation type magnetic field sensor can be formed.It not only has magnetoelectricity laminate cost advantage low and simple for structure, and higher to the susceptibility in magnetic field, greatly widens the frequency response range in magnetic field.This magnetoelectronic devices is practical, can be used for the weak magnetic measurement of wide frequency ranges.
Technical scheme for technical solution problem is taked:
First the magnet steel of suitable thickness and diameter, soft magnetic ferrite, organic waveguide and electret film is prepared, by making waveguide-coupled magnetoelectronic devices shown in accompanying drawing; Wherein soft magnetic ferrite, between organic waveguide and electret film by tackifier bonding, they have same external diameter; The diameter of magnet steel is less than the diameter of soft magnetic ferrite, and both are due to the effect meeting nature absorption in magnetic field.The static magnetic field that magnet steel produces can make soft magnetic ferrite have a prestrain, once the external world has the Weak magentic-field of certain frequency to exist, respective frequencies vibration can occur after acting on ferrite.Vibration sound field is by the focusing of organic waveguide and arrive electret film after transmitting, and in electret, electric charge asymmetricly moves to electrode under the effect of sound field stress, namely produces the output of electric charge and voltage on surface.
Beneficial effect: describe according to above, known the present invention has following features:
(1) simple for structure, the static magnetic field utilizing magnet steel to produce makes soft magnetic ferrite have a prestrain;
(2) soft magnetic ferrite at very wide frequency ranges of operation, can be conducive to the measurement in magnetic field;
(3) being focused on sound field by organic waveguide and transmit, Stress transmit is complete, and coupling state is desirable, and magneto-electric property is stablized;
(4) thickness due to electret film is very little, under the effect of sound field, not only only have thickness direction deformation, more can induce flexural vibrations, and therefore deformation quantity is very large, and then output voltage is comparatively large, and frequency of operation is very wide.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of waveguide-coupled magnetoelectronic devices of the present invention;
In figure: 1, magnet steel, 2, soft magnetic ferrite, 3, organic waveguide, 4, electret film.
Specific embodiments:
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail.
As shown in Figure 1, the soft magnetic ferrite of same diameter, organic waveguide and electret film is bonding by tackifier, the magnet steel of small diameter and soft magnetic ferrite naturally adsorb under the effect of magnetic force, and the static magnetic field that magnet steel produces can make soft magnetic ferrite have a prestrain.
Applying an alternating magnetic field δ H to soft magnetic ferrite, can there is respective frequencies vibration in ferrite, by the coupling of organic waveguide, exports the voltage of respective frequencies on electret film surface.
This change in voltage frequency is identical with alternating magnetic field δ H frequency, and amplitude becomes with magnetic field size, is so converted into voltage by magnetic field and exports.Thus the measurement that can realize low-intensity magnetic field.
Claims (2)
1. a waveguide-coupled magnetoelectronic devices, is characterized in that, is made up of magnet steel (1), soft magnetic ferrite (2), organic waveguide (3) and electret film (4),
By bonding by tackifier to the soft magnetic ferrite (2) of same diameter, organic waveguide (3) and electret film (4), magnet steel (1) and the soft magnetic ferrite (2) of small diameter naturally adsorb under the effect of magnetic force, the static magnetic field that magnet steel (1) produces can make soft magnetic ferrite (2) have a prestrain
Applying an alternating magnetic field δ H to soft magnetic ferrite (2), can there is respective frequencies vibration in ferrite, by the coupling of organic waveguide (3), exports the voltage of respective frequencies on electret film (4) surface;
This change in voltage frequency is identical with alternating magnetic field δ H frequency, and amplitude becomes with magnetic field size, is so converted into voltage by magnetic field and exports, thus can realize the measurement to low-intensity magnetic field.
2. a kind of waveguide-coupled magnetoelectronic devices according to claim 1, is characterized in that, soft magnetic ferrite and electret film do not exist direct interfacial mechanical and be connected, and magnetoelectric effect is realized by the coupling of sound field and organic waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310465754.XA CN103513194B (en) | 2013-10-06 | 2013-10-06 | A kind of waveguide-coupled magnetoelectronic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310465754.XA CN103513194B (en) | 2013-10-06 | 2013-10-06 | A kind of waveguide-coupled magnetoelectronic devices |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103513194A CN103513194A (en) | 2014-01-15 |
| CN103513194B true CN103513194B (en) | 2016-03-02 |
Family
ID=49896224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310465754.XA Expired - Fee Related CN103513194B (en) | 2013-10-06 | 2013-10-06 | A kind of waveguide-coupled magnetoelectronic devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103513194B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291408B (en) * | 2016-10-11 | 2023-06-09 | 中国计量大学 | Magneto-electric converter based on magnetostrictors and electrets |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381156A (en) * | 2000-11-01 | 2002-11-20 | Bse株式会社 | Electret condenser microphone |
| CN2924804Y (en) * | 2006-07-07 | 2007-07-18 | 南京理工大学 | Small-sized substrate integrated waveguide ferrite junction circulator |
| CN101715159A (en) * | 2008-10-08 | 2010-05-26 | 财团法人工业技术研究院 | loudspeaker |
| CN101894998A (en) * | 2010-07-16 | 2010-11-24 | 中国兵器工业第二○六研究所 | Ultra-thin three-port waveguide junction circulator |
| CN102176646A (en) * | 2011-03-02 | 2011-09-07 | 张宁 | Free micro-vibration generator of electret film |
| CN202333102U (en) * | 2011-11-03 | 2012-07-11 | 成都信息工程学院 | X-waveband high-power waveguide junction circulator |
| CN102842575A (en) * | 2012-08-19 | 2012-12-26 | 刘敬 | Sound-wave coupling magneto-electric effect and sound-wave coupling magneto-electric device |
| CN202916428U (en) * | 2012-08-19 | 2013-05-01 | 李向阳 | Special-shaped endpoint coupling-based magnetoelectric device |
| CN103149541A (en) * | 2013-03-01 | 2013-06-12 | 北京美尔斯通科技发展股份有限公司 | Method for extracting weak signals in magnetic field measurement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7133579B2 (en) * | 2002-10-18 | 2006-11-07 | The Governors Of The University Of Alberta | High-speed magneto-optic modulator |
-
2013
- 2013-10-06 CN CN201310465754.XA patent/CN103513194B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1381156A (en) * | 2000-11-01 | 2002-11-20 | Bse株式会社 | Electret condenser microphone |
| CN2924804Y (en) * | 2006-07-07 | 2007-07-18 | 南京理工大学 | Small-sized substrate integrated waveguide ferrite junction circulator |
| CN101715159A (en) * | 2008-10-08 | 2010-05-26 | 财团法人工业技术研究院 | loudspeaker |
| CN101894998A (en) * | 2010-07-16 | 2010-11-24 | 中国兵器工业第二○六研究所 | Ultra-thin three-port waveguide junction circulator |
| CN102176646A (en) * | 2011-03-02 | 2011-09-07 | 张宁 | Free micro-vibration generator of electret film |
| CN202333102U (en) * | 2011-11-03 | 2012-07-11 | 成都信息工程学院 | X-waveband high-power waveguide junction circulator |
| CN102842575A (en) * | 2012-08-19 | 2012-12-26 | 刘敬 | Sound-wave coupling magneto-electric effect and sound-wave coupling magneto-electric device |
| CN202916428U (en) * | 2012-08-19 | 2013-05-01 | 李向阳 | Special-shaped endpoint coupling-based magnetoelectric device |
| CN103149541A (en) * | 2013-03-01 | 2013-06-12 | 北京美尔斯通科技发展股份有限公司 | Method for extracting weak signals in magnetic field measurement |
Non-Patent Citations (1)
| Title |
|---|
| 磁致伸缩位移传感器的研究进展;李春楠等;《实验科学与技术》;20080228;第6卷(第1期);10-12 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103513194A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102071927B (en) | Piezoelectric ceramic electro-acoustic transducer with cylindrical ring structure | |
| Li et al. | An upconversion management circuit for low-frequency vibrating energy harvesting | |
| CN104089737B (en) | A kind of high sensitivity laminated type flexure electric pressure sensor | |
| Bi et al. | Large magnetoelectric effect in negative magnetostrictive/piezoelectric/positive magnetostrictive laminate composites with two resonance frequencies | |
| CN206178120U (en) | Reduce magnetism electric sensor sensing element of vibration noise | |
| CN107894577A (en) | Weak magnetic sensor for inhibiting 1/f noise by regulating and controlling magnetic moment by electric field and application method thereof | |
| CN104006909B (en) | The cable tension sensor of a kind of Suo Li detection method and use the method | |
| CN110794346B (en) | Magnetic field sensor based on magnetic torsional electric effect and manufacturing method thereof | |
| CN108827347A (en) | A kind of magnetoelectric sensor | |
| CN106291406B (en) | A kind of coil Magnetic Sensor | |
| CN103022340B (en) | Magnetic electric compound material structure of a kind of controlled multi-resonant frequency and preparation method thereof | |
| Yu et al. | A magneto-mechano-electric (MME) energy harvester based on rectangular cymbal structure | |
| CN110333378A (en) | A kind of magnetoelectricity laminate current sensor device based on magnetic convergence effect | |
| CN101350570B (en) | Non-coil type magnetic force control device | |
| Wu et al. | Electrical current visualization sensor based on magneto-electrochromic effect | |
| CN202916428U (en) | Special-shaped endpoint coupling-based magnetoelectric device | |
| Yu et al. | Enhanced extremely weak-field energy harvesting via magnetic flux and stress concentration effects in ferromagnetic/ferroelectric composite | |
| CN103513194B (en) | A kind of waveguide-coupled magnetoelectronic devices | |
| CN102842575A (en) | Sound-wave coupling magneto-electric effect and sound-wave coupling magneto-electric device | |
| CN102141601A (en) | AC (Alternating Current) magnetic sensor | |
| Yu et al. | Enhancing weak magnetic field MME coupling in NdFeB magnet/piezoelectric composite cantilevers with stress concentration effect | |
| Zhang et al. | Comprehensive analysis of direct and converse magnetoelectric effects in SS mode bilayered composites | |
| CN109444454B (en) | Magnetoelectric rotation speed sensor for measuring rotation speed of wheel | |
| CN203480007U (en) | Waveguide coupling magnetoelectric device | |
| CN103094270A (en) | Magnetoelectric composite structure and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: KUNSHAN DONGDA ZHIHUI TECHNOLOGY CONSULTING CO., L Free format text: FORMER OWNER: LI XIANGYANG Effective date: 20141126 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315175 NINGBO, ZHEJIANG PROVINCE TO: 215300 SUZHOU, JIANGSU PROVINCE |
|
| TA01 | Transfer of patent application right |
Effective date of registration: 20141126 Address after: 215300, No. 335 middle Lu Bai Lu, Yushan Town, Suzhou City, Jiangsu, Kunshan Applicant after: Kunshan Dongda Zhihui Technology Consulting Co., Ltd. Address before: 315175 Zhejiang city of Ningbo province Yinzhou District No. 899 Xueyuan Road Dahongying College of mechanical and electrical engineering Applicant before: Li Xiangyang |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160126 Address after: 315175 Yinzhou District, Zhejiang, Xueyuan Road, No. 899, Applicant after: Ningbo Dahongying University Address before: 215300, No. 335 middle Lu Bai Lu, Yushan Town, Suzhou City, Jiangsu, Kunshan Applicant before: Kunshan Dongda Zhihui Technology Consulting Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20161006 |