CN206696305U - Acceleration transducer based on magnetic liquid - Google Patents
Acceleration transducer based on magnetic liquid Download PDFInfo
- Publication number
- CN206696305U CN206696305U CN201720526945.6U CN201720526945U CN206696305U CN 206696305 U CN206696305 U CN 206696305U CN 201720526945 U CN201720526945 U CN 201720526945U CN 206696305 U CN206696305 U CN 206696305U
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- China
- Prior art keywords
- photodiode
- magnetic liquid
- container
- rosensweig
- optical transmission
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Abstract
The utility model discloses a kind of acceleration transducer based on magnetic liquid, including permanent magnet and container, the container is closed container and inside is equipped with magnetic liquid, and the magnetic liquid is the magnetic liquid that Rosensweig spikes can be formed under permanent magnet effect, the container is provided with optical transmission window, the base of the optical transmission window overlaps with the axis of Rosensweig spikes, the both sides of said vesse further respectively have infrared generator and photodiode, and photodiode and optical transmission window homonymy, the photodiode is the photodiode for the infrared light passed through from optical transmission window to be converted into electric signal, the other photodiode is also connected with data collecting card and output end in turn.The utility model is based on Rosensweig spike motion principles, is not in adhesive attachment in the tube wall phenomena such as, avoids the friction between sensing element and container, so as to reduce signal delay, improves accuracy of detection.
Description
Technical field
A kind of inertial sensor field is the utility model is related to, is based particularly on the acceleration transducer of magnetic liquid.
Background technology
The existing acceleration transducer based on magnetic liquid, mainly realize sensing detection using three kinds of sensing models：Its
First, with magnetic liquid separately as sensing element；The second is be based on single order law of buoyancy, using being immersed in magnetic liquid
Namagnetic substance, the change of position, sensing signal in magnetic liquid；The third is be based on second order law of buoyancy, magnetic liquid and
Its proportion that can float is more than the permanent magnet of oneself, collectively as sensing magnetic core.But sensed for traditional magnetic liquid
Device, when magnetic liquid is acted on by externally-applied magnetic field, is moved in the container for containing magnetic liquid, because the viscosity of magnetic liquid is made
With making it be adhered to container inner wall, produce viscous friction, delay and the error of sensing response are caused, so as to influence sensor
Robustness and accuracy of detection.
Utility model content
The purpose of this utility model is to provide a kind of accuracy of detection high base to solve above-mentioned the deficiencies in the prior art
In the acceleration transducer of magnetic liquid.
To achieve these goals, the acceleration transducer based on magnetic liquid designed by the utility model, including forever
Magnet and container, the container is closed container and inside is equipped with magnetic liquid, and the magnetic liquid is to be acted in permanent magnet
The magnetic liquid of lower formation Rosensweig spikes, the container are provided with optical transmission window, the base of the optical transmission window with
The axis of Rosensweig spikes overlaps, and the both sides of said vesse further respectively have infrared generator and photodiode, and
Photodiode and optical transmission window homonymy, the photodiode is for the infrared light passed through from optical transmission window to be converted into
The photodiode of electric signal, in addition the photodiode be also connected with data collecting card and output end in turn, the data are adopted
Truck is the data collecting card of the electric signal obtained with high-frequency collection from photodiode.
For the ease of observing the position of Rosensweig spikes, so as to ensure the base of optical transmission window and Rosensweig points
The axis at peak overlaps, and the container is transparent vessel.
It is to utilize the physical characteristic based on Rosensweig spikes based on the acceleration transducer of Rosensweig spikes.
Magnetic liquid produces the spike of taper under additional magnetic fields, and this phenomenon is referred to as Rosensweig spike effects.The biography
Rosensweig spike motion principle of the sensor based on above-mentioned magnetic liquid, when acceleration change occurs for moving object, it can measure
Acceleration change amplitude and direction.
During specifically used, first toward magnetic liquid is partly filled with container, adjustment externally-applied magnetic field makes its generation
Rosensweig spikes, using the sensing element as the sensor.Because the both sides in container are respectively equipped with infrared generator
And photodiode, and Rosensweig spikes have barrier effect for light.When object produces acceleration change,
The tip of Rosensweig spikes is because inertia is swung therewith, therefore glazed area changes therewith, and light intensity passes through photoelectricity two
Pole pipe is converted into electric signal, and the electric signal that data collecting card is obtained with high-frequency collection from photodiode is defeated by output end
Go out rear pending.Measure Rosensweig spike metamorphosis amounts in real time, can be obtained after calibrated conversion acceleration direction with it is big
It is small.
The acceleration transducer based on magnetic liquid that the utility model obtains, for existing magnetic liquid sensor delay
Greatly, the defects of precision is low, based on Rosensweig spike motion principles, due to spike free tip motion when, be not in
For adhesive attachment in the tube wall phenomena such as, necessarily the change to environmental stimuli is more sensitive, avoids the friction between sensing element and container,
So as to reduce signal delay, accuracy of detection is improved.
Brief description of the drawings
Fig. 1 is the structural representation of the acceleration transducer based on magnetic liquid of embodiment；
Fig. 2 is the schematic diagram of the acceleration transducer based on magnetic liquid of embodiment.
In figure：Permanent magnet 1, container 2, Rosensweig spikes 3, optical transmission window 4, infrared generator 5, photodiode
6th, data collecting card 7, output end 8, deformation Rosensweig spikes 9, perspective plane product moment 10.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Embodiment：
As shown in figure 1, the acceleration transducer based on magnetic liquid that the present embodiment provides, including permanent magnet 1 and container
2, the container 2 is closed container and inside is equipped with magnetic liquid, and the magnetic liquid is to be formed under the effect of permanent magnet 1
The magnetic liquid of Rosensweig spikes 3, the container 2 are provided with optical transmission window 4, the base of the optical transmission window 4 with
The axis of Rosensweig spikes 3 overlaps, and the both sides of said vesse 2 further respectively have infrared generator 5 and photodiode
6, and photodiode 6 and the homonymy of optical transmission window 4, the photodiode 6 is the infrared light for will be passed through from optical transmission window 4
Line is converted into the photodiode 6 of electric signal, and the photodiode 6 is also connected with data collecting card 7 and output end in turn in addition
8, the data collecting card 7 is the data collecting card 7 of the electric signal obtained with high-frequency collection from photodiode 6.
For the ease of observing the position of Rosensweig spikes 3, so as to ensure the base of optical transmission window 4 and Rosensweig
The axis of spike 3 overlaps, and the container 2 is transparent vessel.
As shown in Fig. 2 the principle for the acceleration transducer based on magnetic liquid that the present embodiment provides is at sensor
Under static or linear uniform motion state, Rosensweig spikes 3 are in cone；When sensor is in acceleration or deceleration state
When, Rosensweig spikes 3 deform as deformation Rosensweig spikes 9.By monitoring Rosensweig spikes 3 saturating
Perspective plane product moment 10 in light window 4, measures acceleration magnitude and direction.
During specifically used, first toward magnetic liquid is partly filled with container 2, adjustment externally-applied magnetic field makes its generation
Rosensweig spikes 3, using the sensing element as the sensor.Due to being respectively equipped with infrared ray in the both sides of container 2
Device 5 and photodiode 6, and Rosensweig spikes 3 have barrier effect for light.When object produces acceleration change,
The tip of Rosensweig spikes 3 is because inertia is swung therewith, therefore glazed area changes therewith, and light intensity passes through photoelectricity two
Pole pipe 6 is converted into electric signal, the electric signal that data collecting card 7 is obtained with high-frequency collection from photodiode 6, passes through output end
It is pending after 8 outputs.The metamorphosis amount of Rosensweig spikes 3 is measured in real time, acceleration direction can be obtained after calibrated conversion
With size.
Claims (2)
- A kind of 1. acceleration transducer based on magnetic liquid, it is characterised in that：Including permanent magnet（1）And container（2）, the appearance Device（2）For closed container and it is internal magnetic liquid is housed, and the magnetic liquid be can be in permanent magnet（1）Effect is lower to be formed Rosensweig spikes（3）Magnetic liquid, the container（2）It is provided with optical transmission window（4）, the optical transmission window（4）Base With Rosensweig spikes（3）Axis overlap, said vesse（2）Both sides further respectively have infrared generator（5）And light Electric diode（6）, and photodiode（6）With optical transmission window（4）Homonymy, the photodiode（6）Be be used for will be from printing opacity Window（4）The infrared light of transmission is converted into the photodiode of electric signal（6）, the photodiode in addition（6）Also connect successively It is connected to data collecting card（7）And output end（8）, the data collecting card（7）It is to be gathered with high-frequency from photodiode（6） The data collecting card of the electric signal arrived（7）.
- 2. the acceleration transducer according to claim 1 based on magnetic liquid, it is characterised in that：The container（2）For Transparent vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720526945.6U CN206696305U (en) | 2017-05-12 | 2017-05-12 | Acceleration transducer based on magnetic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720526945.6U CN206696305U (en) | 2017-05-12 | 2017-05-12 | Acceleration transducer based on magnetic liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206696305U true CN206696305U (en) | 2017-12-01 |
Family
ID=60449884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720526945.6U Expired - Fee Related CN206696305U (en) | 2017-05-12 | 2017-05-12 | Acceleration transducer based on magnetic liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206696305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445678A (en) * | 2022-08-23 | 2022-12-09 | 电子科技大学 | Method and device for driving magnetic fluid to move horizontally and application |
-
2017
- 2017-05-12 CN CN201720526945.6U patent/CN206696305U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445678A (en) * | 2022-08-23 | 2022-12-09 | 电子科技大学 | Method and device for driving magnetic fluid to move horizontally and application |
| CN115445678B (en) * | 2022-08-23 | 2023-08-01 | 电子科技大学 | Method, device and application for driving magnetic fluid to horizontally move |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171201 Termination date: 20180512 |