CN206281866U - A kind of velocity measuring device based on electromagnetic induction - Google Patents
A kind of velocity measuring device based on electromagnetic induction Download PDFInfo
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- CN206281866U CN206281866U CN201621381266.6U CN201621381266U CN206281866U CN 206281866 U CN206281866 U CN 206281866U CN 201621381266 U CN201621381266 U CN 201621381266U CN 206281866 U CN206281866 U CN 206281866U
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Abstract
The utility model discloses a kind of velocity measuring device based on electromagnetic induction, velocity measuring device includes magnetic field units, sensing unit and signal processing unit, magnetic field units are installed in measurand, measurand produces alternating voltage signal when being moved near sensing unit in sensing unit, the alternating voltage signal of signal processing unit collection sensing unit output, and acquisition flux curves of being quadratured to alternating voltage signal, the position of zero crossing time and sensing unit according to flux curves obtains the displacement time information of measurand, and then obtain the speed of measurand.Displacement information is converted into electric signal by device of the present utility model, realizes measuring at a high speed by detection to electric signal, realizes simple scheme, displacement and tachometric survey in low cost, and Microsecond grade.
Description
Technical field
The utility model belongs to field of measuring technique, more particularly, to a kind of tachometric survey dress based on electromagnetic induction
Put.
Background technology
The fields such as industrial production, scientific research are widely used in motion or the tachometric survey of deformable object.With to measurement
Object, the continuous improvement of environmental requirement, at a high speed measurement turn into important research topic.At present in terms of high speed measurement, mainly adopt
Method has optical means, the measuring method based on high-speed camera, based on Doppler effect acoustic method etc..
There is the problem that equipment cost is high, measurement scheme is complicated, high to measuring environment requirement in above-mentioned measuring method, directly
Constrain its application and the research and development of association area.
Utility model content
Regarding to the issue above, the utility model provides a kind of velocity measuring device based on electromagnetic induction, it is intended to solve
There is the technology that equipment cost is high, measurement scheme is complicated and high to environmental requirement and ask in the existing velocity measuring device of prior art
Topic.
The utility model provides a kind of velocity measuring device based on electromagnetic induction, including：
Magnetic field units, are installed in measurand, produce the first magnetic field and the second magnetic field.
Sensing unit, including transvercal induction conductor array and longitudinal induction conductor array, transvercal induction conductor array be
Same plane multiple transverse direction rectangular conductor arranged in parallel, longitudinal induction array is multiple longitudinal direction arranged in parallel on the same plane
Rectangular conductor, horizontal rectangular conductor orientation is led with longitudinal rectangle in longitudinal induction conductor array in transvercal induction conductor array
Body orientation is vertical, and under the collective effect for producing the first magnetic field and the second magnetic field by magnetic field units, each horizontal rectangle is led
Body exports the first alternating voltage signal, and rectangular conductor exports the second alternating voltage signal longitudinally in each；
Signal processing unit, is connected with sensing unit, receives multiple first alternating voltage signals and multiple second alternations electricity
Pressure signal, and according to multiple first alternating voltage signals, multiple second alternating voltage signals, each two adjacent transverses rectangular conductor it
Between spacing and each two adjacent longitudinal conductor between spacing determine the speed of measurand；
First magnetic field is the magnetic field of horizontal rectangular conductor orientation, and the second magnetic field is longitudinal rectangle conductor arrangement direction
Magnetic field.
Sensing unit is placed on measurand stroke, due to being provided with magnetic field units in measurand, works as measurand
In plane motion where parallel to sensing unit, each the horizontal rectangular conductor and longitudinal direction of meeting in transvercal induction conductor array
Rectangular conductor longitudinally in each in sensor conductor array produces alternating voltage signal, when measurand is by transvercal induction conductor battle array
During the center of certain the horizontal rectangular conductor in row, the magnetic flux of the horizontal rectangular conductor is zero, and signal processing unit obtains every
The alternating voltage signal of individual horizontal rectangular conductor output, and the alternating voltage signal that each horizontal rectangular conductor is exported is accumulated
Point, the magnetic flux change curve of each horizontal rectangular conductor is obtained, the magnetic flux change curve of each horizontal rectangular conductor is zero
Moment be measurand by the moment at horizontal rectangular conductor center, according to moment by horizontal rectangular conductor center and every
The distance of individual horizontal rectangular conductor obtains measurand in the speed of horizontal rectangular conductor orientation, similarly, can obtain quilt
Speed of the object in longitudinal rectangle conductor arrangement direction is surveyed, by synthesizing speed of the measurand in horizontal rectangular conductor orientation
The speed in degree and longitudinal rectangle conductor arrangement direction obtains the speed of measurand, and realization is done to measurand in two dimensional surface
The tachometric survey of any form motion.
Further, between two adjacent transverse rectangular conductors between spacing and two adjacent longitudinal rectangular conductors
Determine away from according to the certainty of measurement of velocity measuring device.
Further, size of the horizontal rectangular conductor in longitudinal rectangle conductor arrangement direction is much larger than magnetic field units in longitudinal direction
The size of rectangular conductor orientation so that the magnetic that the magnetic field in longitudinal rectangle conductor arrangement direction passes through in horizontal rectangular conductor
Flux is zero.
Further, longitudinal rectangular conductor is much larger than magnetic field units in transverse direction in the size of horizontal rectangular conductor orientation
The size of rectangular conductor orientation so that the magnetic that the magnetic field of horizontal rectangular conductor orientation passes through in longitudinal rectangular conductor
Flux is zero.
By the contemplated above technical scheme of the utility model, compared with prior art, following beneficial effect can be obtained
Really:
1st, the velocity measuring device that the utility model is provided, magnetic field units are fixed in measurand, and measurand exists
Moved near sensing unit, drive magnetic field units motion, produce alternating voltage to believe in sensing unit by the magnetic field units moved
Number, it is less demanding for magnetic field units and measurand so that the velocity measuring device is easily realized, believed by alternating voltage
Number, the spacing of the spacing of horizontal rectangular conductor and longitudinal rectangular conductor obtain measurand in horizontal rectangular conductor orientation
Speed and longitudinal rectangle conductor arrangement direction, so as to obtain speed of the measurand in plane of movement, it is possible to achieve tested right
Tachometric survey as doing any motion on plane of movement, such as linear motion and curvilinear motion.
2nd, the velocity measuring device that the utility model is provided, arranges laterally by the movement travel of high-speed moving object
Rectangular conductor and longitudinal rectangular conductor, and increase signal processing unit gathers the speed of alternating voltage signal, can meet microsecond
Tachometric survey in level.Make the scheme low cost of the utility model offer without complicated measurement process and high-precision part.
3rd, the velocity measuring device that the utility model is provided is based on electromagnetic induction principle, it is not necessary to introduce light, sound from the external world
Measured Deng other physical quantitys, reduce the requirement of the precision and measuring environment of velocity measuring device；And the utility model is carried
The technical scheme of confession is simple and easy to apply, low cost, do not limited by space size, it is adaptable to low temperature, liquid, dark, narrow and small environment
Etc. severe measuring environment, strong environmental adaptability has wide practical use.Can be applied to different size and range of movement
Object, you can tested the speed for microcosmic, it is also possible to tested the speed with macroscopic view, for example measuring vehicle speed, and it is three maintenance and operations that can expand
Dynamic tachometric survey.
Brief description of the drawings
Fig. 1 is the schematic diagram of the velocity measuring device that the utility model is provided；
Fig. 2 is the waveform diagram of the alternating voltage signal of the horizontal rectangular conductor output that the utility model is provided；
Fig. 3 is waveform diagram after the alternating voltage signal integration that the horizontal rectangular conductor that the utility model is provided is exported.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.
As shown in figure 1, the velocity measuring device based on electromagnetic induction that the utility model is provided includes sensing unit 1, sense
Answering unit 1 includes transvercal induction conductor array 11 and longitudinal induction conductor array 12, and transvercal induction conductor array 11 is same
The multiple transverse direction rectangular conductor of plane parallel arrangement, longitudinal induction conductor array 12 is vertical for multiple arranged in parallel on the same plane
To rectangular conductor, horizontal rectangular conductor and longitudinal rectangular conductor are the rectangular conductor of coiling, sensing unit 1 and signal transacting
Unit 2 is connected, and signal processing unit 2 is gathered and processes the electricity friendship variable voltage signal of the output of sensing unit 1, is installed in measurand 3
There are magnetic field units 4, magnetic field units 4 include transverse magnetic field unit 41 and longitudinal magnetic field unit 42, what transverse magnetic field unit 41 was produced
Magnetic field axis direction is identical with horizontal rectangular conductor orientation, magnetic field axis direction and longitudinal direction that longitudinal magnetic field unit 42 is produced
Rectangular conductor orientation is identical.
Sensing unit 1 is arranged on the stroke of measurand 3, when measurand 3 is moved, drives magnetic field units 4 to move,
Magnetic field units 4 produce horizontal rectangular conductor orientation magnetic field and longitudinal rectangle conductor arrangement direction magnetic fields in sensing
Unit 1, makes the magnetic flux passed through in sensing unit 1 be change, horizontal rectangular conductor and longitudinal rectangular conductor in sensing unit 1
Middle generation alternating voltage signal.It is less demanding for magnetic field units and measurand so that the velocity measuring device is easily realized.
Magnetic flux of the magnetic field units 4 in sensing unit 1 is alternation, when measurand is located at a horizontal rectangular conductor in horizontal square
During the center in shape conductor arrangement direction, magnetic flux is zero during the magnetic field that transverse magnetic field unit 41 is produced passes through horizontal rectangular conductor,
The length due to horizontal rectangular conductor in longitudinal rectangle conductor arrangement direction is much larger than longitudinal magnetic field unit 42 in longitudinal rectangle again
The length in conductor arrangement direction, it is also zero that the magnetic field that longitudinal magnetic field unit 42 is produced passes through horizontal rectangular conductor, therefore horizontal rectangle
Magnetic flux in conductor is zero.
The magnetic flux that the magnetic field that magnetic field generation device 4 is produced passes through in i-th horizontal rectangular conductor is Φi, tested
During object motion, the magnetic flux phi passed through in horizontal rectangular conductoriIt is an amount for changing over time, and it is horizontal at i-th
Gathered and processed by signal processing unit to alternating voltage signal is induced in rectangular conductor, felt in i-th horizontal rectangular conductor
Alternating voltage signal should be gone out is:
The i-th alternating voltage signal U of horizontal rectangular conductor collected to signal processing unitiRow Integral Processing, obtains
To i-th magnetic flux phi of horizontal rectangular conductori：
When measurand central motion to i-th horizontal rectangular conductor center when, worn in i-th horizontal rectangular conductor
The magnetic flux phi crossediIt is zero, obtains the magnetic flux phi passed through in i-th horizontal rectangular conductoriZero crossing time tiWith i-th
The center d of horizontal rectangular conductori.According in each horizontal rectangular conductor through the time point t that magnetic flux is zeroiWith i-th
The center d of horizontal rectangular conductoriObtain time-displacement curve of the measurand in horizontal rectangular conductor orientation.Pass through
Time-displacement curve to measurand in horizontal rectangular conductor orientation carries out derivation treatment, you can obtain measurand
In the speed of horizontal rectangular conductor orientation.
Similarly, when measurand is located at a longitudinal rectangular conductor at the center in longitudinal rectangle conductor arrangement direction, indulge
Magnetic flux is zero during the magnetic field produced to magnetic field units 42 passes through longitudinal rectangular conductor, and because longitudinal rectangular conductor is in horizontal square
The length in shape conductor arrangement direction is much larger than length of the transverse magnetic field unit 41 in horizontal rectangular conductor orientation, transverse magnetic field
It is also zero that the magnetic field that unit 41 is produced passes through longitudinal rectangular conductor, therefore the magnetic flux in longitudinal rectangular conductor is zero.By to every
The alternating voltage signal of individual longitudinal rectangular conductor output is integrated, and obtains the magnetic flux passed through in rectangular conductor longitudinally in each bent
Line, quilt is obtained according to the center in rectangular conductor longitudinally in each through the time point that magnetic flux is zero and horizontal rectangular conductor
Survey time-displacement curve of the object in longitudinal rectangle conductor arrangement direction.By to measurand in longitudinal rectangle conductor arrangement side
To time shifting power carry out derivation treatment, you can obtain measurand longitudinal rectangle conductor arrangement direction rate curve.
The speed of measurand is obtained by being synthesized by the speed to above-mentioned two direction.By obtaining measurand in transverse direction
The displacement time curve of rectangular conductor orientation and the displacement time curve in longitudinal rectangle conductor arrangement direction are tested
The speed of object, the motion of measurand is not limited to linear motion, can be any form of motion in two dimensional surface.Pass through
Horizontal rectangular conductor and longitudinal rectangular conductor are arranged in the movement travel of high-speed moving object, and increase signal processing unit is adopted
Collect the speed of alternating voltage signal, it is possible to achieve measure at a high speed.
In the embodiment of the velocity measuring device based on electromagnetic induction that the utility model is provided, the horizontal square of sensing unit
Shape conductor and longitudinal rectangular conductor are arranged in the movement travel of measurand, and the arrangement plane of horizontal rectangular conductor and vertical
Plane of movement to the plane of rectangular conductor arrangement with measurand is parallel, horizontal rectangular conductor and longitudinal moment in sensing unit
Shape conductor uses print circuit plates making, and magnetic field units are installed with measurand, and signal processing unit is gathered and processes each horizontal stroke
To the alternating voltage signal that rectangular conductor and longitudinal rectangular conductor are exported.By controlling manufacturing process for printed circuit board, Ke Yishi
The spacing of horizontal rectangular conductor and the spacing of longitudinal rectangular conductor are now controlled, by spacing or the longitudinal direction of reducing horizontal rectangular conductor
The spacing of rectangular conductor, while increasing the quantity of horizontal rectangular conductor or the quantity of longitudinal rectangular conductor, makes signal processing unit
Alternating voltage signal can be collected in measurand movement travel more, more measurand motion bits can be collected into
Data and run duration data are put, the certainty of measurement of velocity measuring device is improved.By the cloth in the movement travel of measurand
Horizontal rectangular conductor and longitudinal rectangular conductor are put, and increase signal processing unit gathers the speed of alternating voltage signal, Ke Yishi
Now measure at a high speed.
Fig. 2 is the alternating voltage signal that the 3 horizontal rectangular conductors gathered by signal processing unit are exported, by 3
The alternating voltage signal of horizontal rectangular conductor output is integrated, and obtains the flux curves that 3 horizontal rectangular conductors are passed through, figure
3 is that the alternating voltage signal of 3 horizontal rectangular conductor outputs is integrated into the oscillogram after treatment, and as each horizontal rectangle is led
The flux curves figure of body, flux curves for zero point be measurand entered the horizontal rectangular conductor center when
Between, the spacing according to 3 horizontal rectangular conductors determines the displacement of measurand, so that it is determined that the displacement time of measurand is bent
Line.
As it will be easily appreciated by one skilled in the art that preferred embodiment of the present utility model is the foregoing is only, not
It is used to limit the utility model, all any modifications made within spirit of the present utility model and principle, equivalent and changes
Enter, should be included within protection domain of the present utility model.
Claims (4)
1. a kind of velocity measuring device based on electromagnetic induction, it is characterised in that including：
Magnetic field units (4), are installed in measurand, produce the first magnetic field and the second magnetic field；
Sensing unit (1), including transvercal induction conductor array (11) and longitudinal induction conductor array (12), transvercal induction conductor battle array
Row (11) are multiple transverse direction rectangular conductor arranged in parallel on the same plane, and longitudinal induction array (12) is parallel on the same plane
The multiple longitudinal direction rectangular conductor of arrangement, horizontal rectangular conductor orientation is vertical with described in the transvercal induction conductor array (11)
It is vertical to longitudinal rectangle conductor arrangement direction in sensor conductor array (12), producing the first magnetic field and the by magnetic field units (4)
Under the collective effect in two magnetic fields, each horizontal rectangular conductor exports the first alternating voltage signal, longitudinally in each rectangular conductor output
Second alternating voltage signal；
Signal processing unit (2), is connected with sensing unit (1), receives the multiple first alternating voltage signal and the multiple
Second alternating voltage signal, and according to the multiple first alternating voltage signal, multiple second alternating voltage signals, the two-phase
The spacing between spacing and the two adjacent longitudinal conductor between adjacent transverse direction rectangular conductor determines the speed of measurand；
First magnetic field is the magnetic field of horizontal rectangular conductor orientation, and second magnetic field is longitudinal rectangle conductor arrangement side
To magnetic field.
2. velocity measuring device according to claim 1, it is characterised in that between two adjacent transverse rectangular conductors
Away from and spacing between two adjacent longitudinal rectangular conductors determined according to the certainty of measurement of velocity measuring device.
3. velocity measuring device according to claim 1, it is characterised in that the horizontal rectangular conductor is led in longitudinal rectangle
The size of body orientation is much larger than size of the magnetic field units in longitudinal rectangle conductor arrangement direction so that longitudinal rectangle conductor row
The magnetic flux that the magnetic field of column direction passes through in horizontal rectangular conductor is zero.
4. velocity measuring device according to claim 1, it is characterised in that longitudinal rectangular conductor is led in horizontal rectangle
The size of body orientation is much larger than size of the magnetic field units in horizontal rectangular conductor orientation so that horizontal rectangular conductor row
The magnetic flux that the magnetic field of column direction passes through in longitudinal rectangular conductor is zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381266.6U CN206281866U (en) | 2016-12-16 | 2016-12-16 | A kind of velocity measuring device based on electromagnetic induction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621381266.6U CN206281866U (en) | 2016-12-16 | 2016-12-16 | A kind of velocity measuring device based on electromagnetic induction |
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| Publication Number | Publication Date |
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| CN206281866U true CN206281866U (en) | 2017-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621381266.6U Active CN206281866U (en) | 2016-12-16 | 2016-12-16 | A kind of velocity measuring device based on electromagnetic induction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037232A (en) * | 2016-12-16 | 2017-08-11 | 华中科技大学 | A kind of velocity measuring device and method based on electromagnetic induction |
| CN112366996A (en) * | 2020-10-27 | 2021-02-12 | 唐山学院 | Method for realizing high-resolution rotation speed control based on rotation speed encoder |
-
2016
- 2016-12-16 CN CN201621381266.6U patent/CN206281866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107037232A (en) * | 2016-12-16 | 2017-08-11 | 华中科技大学 | A kind of velocity measuring device and method based on electromagnetic induction |
| CN112366996A (en) * | 2020-10-27 | 2021-02-12 | 唐山学院 | Method for realizing high-resolution rotation speed control based on rotation speed encoder |
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