CN108957365A - A kind of magnetic field sensor - Google Patents
A kind of magnetic field sensor Download PDFInfo
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- CN108957365A CN108957365A CN201810480524.3A CN201810480524A CN108957365A CN 108957365 A CN108957365 A CN 108957365A CN 201810480524 A CN201810480524 A CN 201810480524A CN 108957365 A CN108957365 A CN 108957365A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/032—Measuring direction or magnitude of magnetic fields or magnetic flux using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
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Abstract
The embodiment of the present invention provides a kind of magnetic field sensor, is related to sensor technical field, provides a kind of novel magnetic field sensor.Magnetic field sensor includes: the light source and receiving unit being oppositely arranged；It further include the light modulation component being arranged between the light source and the receiving unit；The light source, for shining towards the receiving unit；The receiving unit, the light issued for receiving the light source；The light modulation component changes the intensity that the light source that the receiving unit receives issues light for occuring bending and deformation under the influence of a magnetic field, and the light modulation component can restore to deform preceding shape after magnetic field removes.For detecting magnetic field.
Description
Technical field
The present invention relates to sensor technical field more particularly to a kind of magnetic field sensors.
Background technique
Sensor is widely used in social development and human lives, such as industrial automation, agricultural modernization, space flight skill
Art, military engineering, robot technology, development of resources, hydrospace detection, environmental monitoring, medical diagnosis, communications and transportation and household electrical appliance
Etc. multiple fields.
Occur various sensors currently on the market, such as temperature sensor, figure photoelectric sensor, pressure sensor
And magnetic field sensor etc..Wherein, magnetic field sensor is that the amount in various magnetic fields and its variation can be transformed into electric signal by one kind
The device of output.Because all there is magnetic field or information relevant to magnetic field in many places of nature and human society life, because
In current information-intensive society, magnetic field sensor plays vital effect for this, it has also become information technology and information industry
In indispensable base components.
Summary of the invention
The embodiment of the present invention provides a kind of magnetic field sensor, provides a kind of novel magnetic field sensor.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
The embodiment of the present invention provides a kind of magnetic field sensor, comprising: the light source and receiving unit being oppositely arranged；It further include setting
Light modulation component between the light source and the receiving unit；The light source, for shining towards the receiving unit；The reception
Portion, the light issued for receiving the light source；The light modulation component, for being occured bending and deformation under the influence of a magnetic field to change
The light source that the receiving unit receives issues the intensity of light, and the light modulation component can restore to deform after magnetic field removes
Preceding shape.
Preferably, the material of the light modulation component includes shape-memory material and magnetic particle.
It is further preferred that the shape-memory material is shape-memory polymer.
Preferably, the material of the light modulation component includes elastic material and magnetic particle.
Preferably, the percentage that the quality of the magnetic particle accounts for the light modulation component gross mass is 1~10%.
Preferably, the receiving unit includes multiple receivers arranged side by side, and the light modulation component includes and the reception
The one-to-one multiple sub- light modulation components of device；The sub- light modulation component is for occuring bending and deformation under the influence of a magnetic field to change
The light source that receiver corresponding with sub- light modulation component described in this receives issues the intensity of light.
Preferably, the light that the light source issues is collimated light.
Preferably, the light modulation component is strip；Wherein, the extending direction of the light modulation component of strip and the light source
The direction for being directed toward the receiving unit is identical.
It is further preferred that one end of the light modulation component of the strip is fixed, the other end can free bend deformation.
Preferably, the light source is OLED luminescent device.
The embodiment of the present invention provides a kind of magnetic field sensor, and magnetic field sensor includes light source, receiving unit and is arranged in light
Light modulation component between source and receiving unit, light source are used to shine towards receiving unit, since light modulation component under the influence of a magnetic field can
It occurs bending and deformation to change the intensity that the light source that receiving unit receives issues light, thus is sent out according to the light source that receiving unit receives
The variable quantity of the intensity of light out can get the degree whether light modulation component occurs bending and deformation or occur bending and deformation,
And it is related with the size in magnetic field to dim the degree whether component occurs bending and deformation or occur bending and deformation, therefore magnetic field sensor
Whether the variable quantity that the light source that is received according to receiving unit issues the intensity of light can detect has magnetic field or detects magnetic field
Size.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram one of magnetic field sensor provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram two of magnetic field sensor provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram three of magnetic field sensor provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram for dimming component provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram four of magnetic field sensor provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram five of magnetic field sensor provided in an embodiment of the present invention；
Fig. 7 is a kind of structural schematic diagram six of magnetic field sensor provided in an embodiment of the present invention；
Fig. 8 is a kind of structural schematic diagram seven of magnetic field sensor provided in an embodiment of the present invention.
Appended drawing reference:
10- light source；20- receiving unit；201- receiver；30- dims component；301- shape-memory material (elastic material)；
302- magnetic particle；303- dims component.
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.
The embodiment of the present invention provides a kind of magnetic field sensor, as shown in Figure 1-Figure 3, comprising: 10 He of light source being oppositely arranged
Receiving unit 20；It further include the light modulation component 30 being arranged between light source 10 and receiving unit 20；Light source 10 is used for towards receiving unit 20
It shines；Receiving unit 20, for receiving the light of the sending of light source 10；Component 30 is dimmed, for the change that bends under the influence of a magnetic field
Shape is to change the intensity that the light source 10 that receiving unit 20 receives issues light, and light modulation component 30 can restore to become after the removal of magnetic field
Shape before shape.
It should be noted that first, for light source 10 type without limiting, being subject to can shine.It is exemplary, light source
10 can be LED (Light-Emitting Diode, light emitting diode) lamp；It may be OLED (Organic Light-
Emitting Diode, Organic Light Emitting Diode) luminescent device；Certainly incandescent lamp, tungsten halogen lamp etc. be can also be.Since OLED is sent out
Optical device has the characteristics that all solid state, self-luminous, contrast are high and visual angle is wide, and OLED luminescent device can be fabricated to big face
Product light source, improves the brightness of light source 10 and the sensitivity of magnetic field sensor, thus the embodiment of the present invention is preferred, and light source 10 is OLED
Luminescent device.
On this basis, light source 10 can issue colour mixture light such as white light；Monochromatic light can also be issued, such as feux rouges (R), green
Light (G) or blue light (B) etc..
Second, for receiving unit 20, can receive the light of the sending of light source 10, and the intensity that can acquire received light is
It is quasi-.Specifically, receiving unit 20 may include photoelectric sensor, photoelectric sensor realizes detection, photoelectric sensing using photoelectric effect
The nuclear structure of device is diode, can be LED, is also possible to OLED.
Third, for dimming the material of component 30 without restriction, can occur bending and deformation under magnetic fields, magnetic field
It can restore before deforming after removal subject to shape.Herein, before deformation capable of being restored to after the removal of magnetic field due to light modulation component 30
Shape, thus magnetic field removal after, light modulation component 30 to light source 10 issue light influence and identical, Jin Erjie when not applying magnetic field
The intensity for the light that receipts portion 20 receives is identical as when not applying magnetic field.The embodiment of the present invention provides two kinds of specific light modulation components 30
Material.
The first: is as shown in figure 4, the material of light modulation component 30 includes shape-memory material 301 and magnetic particle 302.
Due to including magnetic particle 302 in the material of light modulation component 30, thus when dimming has magnetic field around component 30, magnetic
Field can attract magnetic particle, so that light modulation component 30 is bent towards magnetic direction.On this basis, due to dimming component 30
Material in further include shape-memory material 301, and the product made of shape-memory material 301 have in an initial condition just
Beginning shape, in stimulation of the product by external condition (such as temperature, magnetic field, light, power), original shape changes, when extraneous item
When part is restored to primary condition, then the product made of shape-memory material 301 can be restored to original shape, thus the present invention again
The light modulation component 30 that embodiment provides can occur bending and deformation under magnetic fields, and light modulation component 30 again can be extensive after the removal of magnetic field
The multiple shape to before deformation.
Herein, for the type of shape-memory material 301 without restriction, such as marmem, shape be can be
Memory ceramic or shape-memory polymer etc..It is not easy to break since shape-memory polymer has good toughness, thus this hair
Bright embodiment preferable shape memory material 301 is shape-memory polymer.On this basis, shape-memory polymer for example can be with
It is polylactic acid (also referred to as L- lactide, abbreviation PLLA), pla-pcl or polyurethane etc..The embodiment of the present invention it is further preferred that
Shape-memory polymer is polylactic acid.
Second: as shown in figure 4, the material of light modulation component 30 includes elastic material 301 and magnetic particle 302.
Due to including magnetic particle 302 in the material of light modulation component 30, thus when dimming has magnetic field around component 30, magnetic
Field can attract magnetic particle, so that light modulation component 30 is bent towards magnetic direction.On this basis, elastic material 301 is
It can deform by external force, after external force elimination, and a kind of material of original form can be restored to, therefore, this
The light modulation component 30 that inventive embodiments provide can occur bending and deformation under magnetic fields, dim component 30 again after the removal of magnetic field
Shape before deformation can be restored to.
Herein, elastic material 301 for example can be rubber.
On this basis, in the case where dimming component 30 includes magnetic particle 302, for the specific of magnetic particle 302
Material is without restriction, such as can be nickel (Ni), di-iron trioxide (Fe2O3) or ferroso-ferric oxide (Fe3O4) etc..In addition, right
The content of magnetic particle 302 can specifically be used for the magnetic of detection without limiting according to magnetic field sensor in light modulation component 30
The content of the size adjustment magnetic particle 302 of field.Since if the content of magnetic particle 302 in light modulation component 30 is very little, in magnetic
Light modulation component 30 may be less likely to occur bending deformation under field action or bending deformation is unobvious；If the content of magnetic particle 302
Too much, then the content of shape-memory material 301 or elastic material 301 can reduce, and may result in light modulation component 30 in this way in magnetic
It is not easy to be restored to the shape before deformation after the removal of field.Based on this, the embodiment of the present invention is preferred, and the quality of magnetic particle 302 accounts for
The percentage for dimming 30 gross mass of component is 1~10%.
4th, light modulation component 30 is for occuring bending and deformation under the influence of a magnetic field to change the light that receiving unit 20 receives
Source 10 issues the intensity of light, can be light modulation component 30 and blocks the directive receiving unit of the sending of light source 10 after occuring bending and deformation
The amount of 20 light or the light of blocking increases so that the intensity that the light source 10 that receiving unit 20 receives issues light reduces, that is, receives
The amount of light reduces；It is also possible to light modulation component 30 and dims the directive reception that component 30 issues light source 10 after occuring bending and deformation
The intensity for the light that the blocking of the light in portion 20 reduces or the unobstructed light source 10 that receiving unit 20 is received issues increases, that is, receives
The amount of the light arrived increases.
Herein, after dimming component 30 and occuring bending and deformation under the influence of a magnetic field, light source 10 that receiving unit 20 receives
Issue light intensity reduce when, can be light modulation component 30 occur bending and deformation after, receiving unit 20 do not receive light source 10 sending
Light, exemplary, Fig. 1 is the light that light source 10 that receiving unit 20 receives issues the case where not applying magnetic field, and Fig. 3 is light modulation
After component 30 occurs bending and deformation under the influence of a magnetic field, the light for the sending of light source 10 that receiving unit 20 receives；It is also possible to adjust
After light component 30 occurs bending and deformation, receiving unit 20 can also receive the light of the sending of light source 10, but relative to light modulation component
Before 30 occur bending and deformation, the intensity for the light that the light source 10 that receiving unit 20 receives issues reduces, exemplary, and Fig. 1 is not apply
The case where adding magnetic field, the light that the light source 10 that receiving unit 20 receives issues, Fig. 2 are that light modulation component 30 occurs under the influence of a magnetic field
After bending deformation, the light for the sending of light source 10 that receiving unit 20 receives.
After light modulation component 30 occurs bending and deformation under the influence of a magnetic field, the light source 10 that receiving unit 20 receives issues light
Intensity increase when, can be light modulation component 30 occur bending and deformation before, receiving unit 20 do not receive light source 10 sending light, show
Example, Fig. 3 is the light that the light source 10 that receiving unit 20 receives issues the case where not applying magnetic field, and Fig. 1 is light modulation component 30 in magnetic
After occuring bending and deformation under the action of, the light for the sending of light source 10 that receiving unit 20 receives；It is also possible to dim the hair of component 30
Before raw bending deformation, receiving unit 20 can receive the light of the sending of light source 10, but bend change relative to light modulation component 30
Before shape, after light modulation component 30 occurs bending and deformation, the intensity for the light that the light source 10 that receiving unit 20 receives issues increases, example
, Fig. 2 is the light that the light source 10 that receiving unit 20 receives issues the case where not applying magnetic field, and Fig. 1 is light modulation component 30 in magnetic field
Under the action of occur bending and deformation after, light that light source 10 that receiving unit 20 receives issues.
Based on above-mentioned, after light modulation component 30 occurs bending and deformation under magnetic fields, light source 10 that receiving unit 20 receives
The amount for issuing the intensity reduction of light is related with the light modulation bending degree of component 30, and the bending degree for dimming component 30 is bigger, receives
The amount that the intensity that the light source 10 that portion 20 receives issues light reduces is bigger, i.e., the light source 10 that receiving unit 20 receives issues the strong of light
It spends smaller.Similarly, after light modulation component 30 occurs bending and deformation under magnetic fields, the light source 10 that receiving unit 20 receives issues light
The increased amount of intensity with light modulation the bending degree of component 30 it is related, dim component 30 bending degree it is bigger, receiving unit 20 connects
The increased amount of intensity that the light source 10 received issues light is bigger, i.e., the intensity that the light source 10 that receiving unit 20 receives issues light is got over
Greatly.And dimming component 30 is to bend under the influence of a magnetic field, thus dim the bending degree of component 30 and the size in magnetic field
Related, magnetic field is bigger, and it is bigger to dim bending degree of the component 30 under magnetic fields.Based on this, the embodiment of the present invention is according to connecing
The variable quantity that the light source 10 that receipts portion 20 receives issues the intensity of light can obtain the size in magnetic field.
The embodiment of the present invention provides a kind of magnetic field sensor, and magnetic field sensor includes light source 10, receiving unit 20 and setting
Light modulation component 30 between light source 10 and receiving unit 20, light source 10 is used to shine towards receiving unit 20, due to dimming component 30
It can be occured bending and deformation under the influence of a magnetic field to change the intensity that the light source 10 that receiving unit 20 receives issues light, thus basis
The light source 10 that receiving unit 20 receives issues the variable quantity of the intensity of light, can get whether light modulation component 30 bends
The degree for deforming or occuring bending and deformation, and dim degree and magnetic that whether component 30 occurs bending and deformation or occur bending and deformation
Size it is related, therefore the light source 10 that is received according to receiving unit 20 of magnetic field sensor issue the variable quantity of the intensity of light can
To detect the size for whether having magnetic field or detecting magnetic field.
Preferably, as shown in Figure 5 and Figure 6, receiving unit 20 includes multiple receivers 201 arranged side by side, dims component 30
Including with the one-to-one multiple sub- light modulation components 303 of receiver 201；Son light modulation component 303 for sending out under the influence of a magnetic field
Raw bending deformation is to change the intensity that the light source 10 that receiver 201 corresponding with the sub- light modulation component 303 receives issues light.
It should be noted that for sub- light modulation component 303 number without limit, can be according to the number of receiver 201
Amount is accordingly arranged.The multiple sub- light modulation components 303 being arranged should not influence each other in bending deformation, every sub- dimming section part
303 should be only capable of changing the hair of light source 10 that receiver 201 corresponding with the sub- light modulation component 303 receives after occuring bending and deformation
The intensity of light out issues the intensity of light without that should change the light source 10 that other receivers 201 receive.
Wherein, the number for the receiver 201 for including for receiving unit 20, can be according to 10 area of light source without limiting
The receiver 201 of respective numbers is arranged in size, and the area of light source 10 is larger, and the quantity of the receiver 201 of setting can be more.This
Place, receiver 201 can be photoelectric sensor.
If receiving unit 20 only includes a receiver 201, when the receiver 201 breaks down, then receiver 201 can
The light that can not can receive the sending of light source 10, to reduce the magnetic field detection accuracy of magnetic field sensor.Further, since receiving
The size of such as photoelectric sensor of device 201 is smaller, and the area of light source 10 is generally large, thus when a receiver 201 is only set,
When light modulation component 30 occurs bending and deformation, the variation that the light source 10 that receiver 201 receives issues the intensity of light may be unknown
It is aobvious, it is not high so as to cause the detection sensitivity of magnetic field sensor.Based on this, the embodiment of the present invention is preferred, and receiving unit 20 includes more
A receiver 201, light modulation component 30 includes multiple sub- light modulation components 303, and every sub- dimming section part 303 can be in magnetic field
It is occured bending and deformation under effect to change the sending light of light source 10 that receiver 201 corresponding with the sub- light modulation component 303 receives
Intensity.Since the quantity of receiver 201 is more, and when applying magnetic field, every sub- dimming section part 303 can change and it
The intensity for the light that corresponding receiver 201 receives, to improve the sensitivity of magnetic field sensor.
The embodiment of the present invention, the light that light source 10 issues can be diverging as shown in Figure 7, can also be quasi- as shown in Figure 3
Direct light.
With reference to Fig. 3 and Fig. 7, if the light modulation component 30 in Fig. 3 and the light modulation component 30 in Fig. 7 are first when not applying magnetic field
Beginning state is identical, and the curved of same degree occurs for the light modulation component 30 in light modulation component 30 and Fig. 7 under identical magnetic field in Fig. 3
Song deforms, and the light that light source 10 issues in Fig. 3 is collimated light, it can be seen that after light modulation component 30 occurs bending and deformation, receiving unit 20
It does not receive light source 10 and issues light, and the light that light source 10 issues in Fig. 7 is diverging, after light modulation component 30 occurs bending and deformation,
Receiving unit 20 can also receive the light of the sending of light source 10, the remitted its fury of the light only received, accordingly, with respect to light source 10
The light of sending is collimated light, and when the light that light source 10 issues is diverging, light modulation component 30 bends change under the influence of a magnetic field
After shape, the influence to the intensity that the light source 10 that receiver 201 receives issues light is not it is obvious that therefore passing to improve magnetic field
The detection sensitivity of sensor, thus the light that preferred light source of the embodiment of the present invention 10 issues is collimated light.
The embodiment of the present invention, for dim component 30 shape without limit, if under the influence of a magnetic field, dimming section
Part 30 can occur bending and deformation.Exemplary, the shape for dimming component 30 can be strip, disc-shaped or diamond shape etc..By
When dimming component 30 is strip, under the influence of a magnetic field, light modulation component 30 is easier to occur bending and deformation, thus the present invention is real
Applying example and preferably dimming component 30 is strip；Wherein, the extending direction of the light modulation component 30 of strip and light source 10 are directed toward receiving unit 20
Direction it is identical.
Herein, for the length of the light modulation component 30 of strip without limiting, can according to light source 10 and receiving unit 20 it
Between distance be accordingly arranged, due to strip light modulation component 30 length it is longer, light modulation component 30 under the influence of a magnetic field
It is easier to occur bending and deformation, thus the length of the light modulation component 30 of strip that the embodiment of the present invention is preferably provided with should be as much as possible
It is long.
In addition, for the light modulation component 30 of strip cross section shape without limiting, such as can be round, square
Shape or hexagon etc..
On this basis, it will be understood by those skilled in the art that being sent out to enable to dim component 30 in the effect in magnetic field
Raw bending deformation can fix any position for dimming component 30, in order under the influence of a magnetic field, dim its of component 30
Its position can occur bending and deformation.It herein, can be as shown in figure 8, the both ends for dimming component 30 be fixed, the effect in magnetic field
Under, light modulation component 30 middle position occur bending and deformation, can also with as shown in figure 3, by dim component 30 one end fix,
Under the action of magnetic field, the other end of light modulation component 30 occurs bending and deformation.
Due under identical magnetic field, when one end of light modulation component 30 is fixed, the other end can free bend deformation when, light modulation
The bending deformation that component 30 occurs becomes apparent from, thus the Strength Changes of light that receiving unit 20 receives become apparent from, so that magnetic
The detection sensitivity of field sensor is higher, therefore one end of the light modulation component 30 of the preferred strip of the embodiment of the present invention is fixed, another
It end can free bend deformation.It is further preferred that light modulation component 30 is fixed by 10 one end of close to sources, the other end can Free Transform.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of magnetic field sensor characterized by comprising the light source and receiving unit being oppositely arranged；It further include being arranged described
Light modulation component between light source and the receiving unit；
The light source, for shining towards the receiving unit；
The receiving unit, the light issued for receiving the light source；
The light modulation component changes the light that the receiving unit receives for occuring bending and deformation under the influence of a magnetic field
Source issues the intensity of light, and the light modulation component can restore to deform preceding shape after magnetic field removes.
2. magnetic field sensor according to claim 1, which is characterized in that the material of the light modulation component includes shape memory
Material and magnetic particle.
3. magnetic field sensor according to claim 2, which is characterized in that the shape-memory material is shape memory polymers
Object.
4. magnetic field sensor according to claim 1, which is characterized in that the material of the light modulation component includes elastic material
And magnetic particle.
5. according to the described in any item magnetic field sensors of claim 2-4, which is characterized in that the quality of the magnetic particle accounts for institute
The percentage for stating light modulation component gross mass is 1~10%.
6. magnetic field sensor according to claim 1, which is characterized in that the receiving unit includes arranged side by side multiple connects
Device is received, the light modulation component includes and the one-to-one multiple sub- light modulation components of the receiver；The sub- light modulation component is used for
It is occured bending and deformation under the influence of a magnetic field to change the institute that receiver corresponding with sub- light modulation component described in this receives
State the intensity that light source issues light.
7. magnetic field sensor according to claim 1, which is characterized in that the light that the light source issues is collimated light.
8. magnetic field sensor according to claim 1, which is characterized in that the light modulation component is strip；Wherein, strip
The extending direction of the light modulation component is identical as the direction that the light source is directed toward the receiving unit.
9. magnetic field sensor according to claim 8, which is characterized in that one end of the light modulation component of the strip is fixed,
The other end can free bend deformation.
10. magnetic field sensor according to claim 1, which is characterized in that the light source is OLED luminescent device.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046901A1 (en) * | 2021-09-24 | 2023-03-30 | Analog Devices International Unlimited Company, | Magnetic field sensing based on particle position within container |
| WO2023208697A1 (en) * | 2022-04-29 | 2023-11-02 | Analog Devices International Unlimited Company | Comparative measurement using particles within one or more compartments |
| US11940502B2 (en) | 2021-09-24 | 2024-03-26 | Analog Devices International Unlimited Company | Magnetic field sensing based on particle position within container |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1287063A2 (en) * | 1985-01-02 | 1987-01-30 | Научно-исследовательский институт механики и физики при Саратовском государственном университете | Device for measuring intensity of magnetic field |
| US5157259A (en) * | 1990-04-14 | 1992-10-20 | Basf Aktiengesellschaft | Measuring method and measuring arrangement for determining the orientation ratio of flexible magnetic recording media |
| CN1940483A (en) * | 2005-09-28 | 2007-04-04 | 王敏 | Optical-fibre current/magnetic field sensor |
| US20100264913A1 (en) * | 2008-08-20 | 2010-10-21 | Adarsh Sandhu | Magnetic field sensor |
| CN102141602A (en) * | 2010-02-01 | 2011-08-03 | 陆樟献 | Magnetic field sensor and magnetic field tester |
| JP2013007720A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Ltd | Magnetic field measurement device and magnetic field measurement device manufacturing method |
| CN202929182U (en) * | 2012-11-20 | 2013-05-08 | 林志娟 | Magnetic sensor structure |
| CN103304981A (en) * | 2012-03-12 | 2013-09-18 | 中国科学院化学研究所 | Cross-linked shape memory polyurethane responsive to magnetic field and/or electric field and preparation method thereof |
| CN103809134A (en) * | 2012-11-14 | 2014-05-21 | 西安金和光学科技有限公司 | Optical fiber magnetic field detection device |
| CN103885003A (en) * | 2014-03-20 | 2014-06-25 | 河海大学常州校区 | Tiny magnetic field sensor based on metal-clad magnetic fluid waveguide, and measuring system |
| CN106525093A (en) * | 2016-11-03 | 2017-03-22 | 深圳大学 | Fiber vector magnetic field sensor based on magnetofluid nonuniform clusters and manufacturing method |
| CN106569152A (en) * | 2016-03-25 | 2017-04-19 | 中国计量学院 | Optical fiber cantilever beam magnetic field sensing probe based on giant magnetostrictive film |
-
2018
- 2018-05-18 CN CN201810480524.3A patent/CN108957365B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1287063A2 (en) * | 1985-01-02 | 1987-01-30 | Научно-исследовательский институт механики и физики при Саратовском государственном университете | Device for measuring intensity of magnetic field |
| US5157259A (en) * | 1990-04-14 | 1992-10-20 | Basf Aktiengesellschaft | Measuring method and measuring arrangement for determining the orientation ratio of flexible magnetic recording media |
| CN1940483A (en) * | 2005-09-28 | 2007-04-04 | 王敏 | Optical-fibre current/magnetic field sensor |
| US20100264913A1 (en) * | 2008-08-20 | 2010-10-21 | Adarsh Sandhu | Magnetic field sensor |
| CN102141602A (en) * | 2010-02-01 | 2011-08-03 | 陆樟献 | Magnetic field sensor and magnetic field tester |
| JP2013007720A (en) * | 2011-06-27 | 2013-01-10 | Hitachi Ltd | Magnetic field measurement device and magnetic field measurement device manufacturing method |
| CN103304981A (en) * | 2012-03-12 | 2013-09-18 | 中国科学院化学研究所 | Cross-linked shape memory polyurethane responsive to magnetic field and/or electric field and preparation method thereof |
| CN103809134A (en) * | 2012-11-14 | 2014-05-21 | 西安金和光学科技有限公司 | Optical fiber magnetic field detection device |
| CN202929182U (en) * | 2012-11-20 | 2013-05-08 | 林志娟 | Magnetic sensor structure |
| CN103885003A (en) * | 2014-03-20 | 2014-06-25 | 河海大学常州校区 | Tiny magnetic field sensor based on metal-clad magnetic fluid waveguide, and measuring system |
| CN106569152A (en) * | 2016-03-25 | 2017-04-19 | 中国计量学院 | Optical fiber cantilever beam magnetic field sensing probe based on giant magnetostrictive film |
| CN106525093A (en) * | 2016-11-03 | 2017-03-22 | 深圳大学 | Fiber vector magnetic field sensor based on magnetofluid nonuniform clusters and manufacturing method |
Non-Patent Citations (1)
| Title |
|---|
| 施伟华 等: "基于定向耦合的光子晶体光纤高灵敏度磁场和温度传感器", 《光学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046901A1 (en) * | 2021-09-24 | 2023-03-30 | Analog Devices International Unlimited Company, | Magnetic field sensing based on particle position within container |
| US11940502B2 (en) | 2021-09-24 | 2024-03-26 | Analog Devices International Unlimited Company | Magnetic field sensing based on particle position within container |
| WO2023208697A1 (en) * | 2022-04-29 | 2023-11-02 | Analog Devices International Unlimited Company | Comparative measurement using particles within one or more compartments |
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