CN106949822A - The real-time displacement reponse system and its feedback method of microdevice - Google Patents
The real-time displacement reponse system and its feedback method of microdevice Download PDFInfo
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- CN106949822A CN106949822A CN201710063126.7A CN201710063126A CN106949822A CN 106949822 A CN106949822 A CN 106949822A CN 201710063126 A CN201710063126 A CN 201710063126A CN 106949822 A CN106949822 A CN 106949822A
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- time displacement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
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Abstract
The invention provides a kind of real-time displacement reponse system of microdevice, including：Magnet；Multiple Hall sensors, for detecting and exporting multiple magnitudes of voltage that the magnet is produced in each Hall sensor position correspondence；Control chip, for receiving the magnitude of voltage, and calculates according to the magnitude of voltage and the location parameter real-time position information of the magnet.Present invention also offers a kind of real-time displacement feedback method of the microdevice of the real-time displacement reponse system applied to the microdevice.The real-time displacement reponse system and its feedback method for the microdevice that the present invention is provided, it is directly realized by the precise control of displacement, it not only can directly export the displacement information of magnet, and the control accuracy of displacement is unrelated with the rigging position of magnet, magnet demagnetization on displacement information also without influence, using preceding without being calibrated.
Description
【Technical field】
The present invention relates to the real-time displacement reponse system and its feedback method of a kind of microdevice.
【Background technology】
With the development of electronic technology, the inside of mobile communication terminal such as mobile phone etc. generally has multiple miniature devices
Part, such as producing the built-in miniature motor of vibration, drive the voice coil motor of pick-up lens.Having inside these micro-components can
Mobile part, and moving parts user in movement can not know the real-time displacement of moving parts, therefore, it is impossible to miniature portion
The displacement of the moving parts of part carries out precise control.
Therefore, it is necessary to provide the real-time displacement reponse system and its feedback method of a kind of new microdevice to solve on
State problem.
【The content of the invention】
It is an object of the invention to provide the real-time displacement reponse system and its feedback method of a kind of microdevice, its is effective
The technical problem of precise control can not be carried out by solving the displacement of the moving parts of existing motor.
Technical scheme is as follows：A kind of real-time displacement reponse system of microdevice, the microdevice includes
The moving parts being reciprocally moveable, the reponse system includes：
It is arranged at the magnet on the moving parts；
It is multiple by default location parameter set Hall sensors, for detect and export the magnet it is each it is described suddenly
Multiple magnitudes of voltage that your sensing station correspondence is produced；
The control chip electrically connected with multiple Hall sensors, for receiving the magnitude of voltage, and according to the electricity
Pressure value calculates the real-time position information of the magnet with the location parameter.
It is preferred that, the microdevice also includes and the spaced shell of the moving parts；Multiple Halls are passed
Moving direction of the sensor along the moving parts is arranged at intervals on the shell.
It is preferred that, the magnet has the cambered surface towards the direction projection of the shell.
It is preferred that, the control chip includes the multiplexer that is all connected with each Hall sensor, and with institute
State preamplifier, analog-digital converter, digital processing unit and digital analog converter that multiplexer is sequentially connected in series.
It is preferred that, the Hall sensor includes the sensing unit for being used to detect magnetic induction intensity, and the sensing unit
It is made up of wafer.
It is preferred that, the sensing unit and the control chip are integrally disposed.
Present invention also offers a kind of real-time displacement feedback method of microdevice, the feedback method is applied to as above institute
The real-time displacement reponse system for the microdevice stated；The feedback method comprises the following steps：
S1, multiple Hall sensors detect and export the magnet and produced in each Hall sensor position correspondence
Multiple magnitudes of voltage；
S2, the control chip receive the magnitude of voltage, and each magnitude of voltage pair is calculated according to Hall effect formula
The magnetic induction intensity value answered；
S3, the location parameter for obtaining the magnetic induction intensity value and the Hall sensor is fitted using data fit approach
Function formula；
S4, obtained according to the function formula computing magnetic induction intensity value it is maximum when the magnet residing for real-time position
Confidence ceases；
S5, output real-time position information.
It is preferred that, the microdevice also includes and the spaced shell of the moving parts；Multiple Halls are passed
Moving direction of the sensor along the moving parts is arranged at intervals on the shell.
It is preferred that, the magnet has the cambered surface towards the direction projection of the shell.
It is preferred that, the Hall sensor includes being used for detecting the sensing unit of magnetic induction intensity, the sensing unit by
Wafer is constituted；
In the step S2, the Hall effect formula is UH=K*IB/d；Wherein, UHDescribed in the step S1 suddenly
The magnitude of voltage that your sensor is detected；K is the Hall coefficient of the sensing unit；I be flow through the sensing unit electric current it is close
Degree；B is magnetic induction intensity value；D is the thickness of the sensing unit.
Compared with correlation technique, the real-time displacement reponse system and its feedback method of the microdevice that the present invention is provided, its
Pass through Hall sensor array and control chip so that the displacement information of magnet can directly feed back to application end in real time, from
And be directly realized by the precise control of displacement, not only can directly export the displacement information of magnet, and the control accuracy of displacement with
The rigging position of magnet is unrelated, magnet demagnetization on displacement information also without influence, using preceding without being calibrated.
【Brief description of the drawings】
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will make needed for embodiment description
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, it can also obtain other according to these accompanying drawings
Accompanying drawing, wherein：
Fig. 1 is the frame diagram of the real-time displacement reponse system of microdevice of the present invention；
Fig. 2 is the position relationship schematic diagram of magnet of the present invention and Hall sensor；
Fig. 3 is position view of the Hall sensor of the present invention in X-axis；
Fig. 4 is Hall sensor present position of the present invention and the graph of relation of the magnetic induction intensity of detection；
Fig. 5 is algorithm integral operation flow chart of the present invention；
Fig. 6 is the flow chart of the real-time displacement feedback method of microdevice of the present invention.
【Embodiment】
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, frame diagrams of the Fig. 1 for the real-time displacement reponse system of microdevice of the present invention.The invention provides
A kind of real-time displacement reponse system 100 of microdevice, the microdevice move portion (not shown) including being reciprocally moveable
Part.The real-time displacement reponse system 100 of the microdevice generally includes magnet 1, multiple Hall sensors 2 and control core
Piece 3.
Wherein, the magnet 1 is arranged on the moving parts, and of reciprocating vibration with the moving parts, and the magnet 1 is used
In generation magnetic field.In the present embodiment, the magnet 1 can be fixed on moving parts for independent part；Certainly, at other
In embodiment, the magnet 1 can also as the moving parts a part, for example using voice coil motor or vibrating motor from
The magnet of band.Wherein, the magnet is permanent magnet.
Multiple Hall sensors 2 are configured by default location parameter, that is to say, that each described Hall is passed
Sensor 2 has the location parameter itself determined.The Hall sensor 2 can be used for detecting and exporting the magnet 1 and exist
Multiple magnitude of voltage U that each position of the Hall sensor 2 correspondence is producedH.It is multiple described in the preferred embodiment of the present invention
Spaced array is set Hall sensor 2 in the same direction and position is fixed each other.
Also referring to Fig. 2, Fig. 2 is the position relationship schematic diagram of magnet of the present invention and Hall sensor.The miniature device
Part also include with the spaced shell of the moving parts 4, the Hall sensor 2 can moving along the moving parts
Direction is arranged at intervals on the shell 4, and the magnet 1 is located at the top of Hall sensor 2 and moved with moving parts along it
Dynamic direction is moved back and forth.Therefore, each described Hall sensor 2 can sense that the magnet 1 is produced at its position
The corresponding magnitude of voltage U of raw magnetic induction intensityH；, should with the change of the Hall sensor 2 and the distance of the magnet 1
Magnitude of voltage correspondingly changes.In embodiment, the magnet 1 has the cambered surface 10 towards the direction projection of the shell 4, so that institute
Cambered surface 10 is stated towards the Hall sensor 2, so as to improve the precision of the Displacement Feedback system detectio.Certainly, in other realities
Apply in example, the magnet 1 can also be rectangular-shape, i.e., its towards the direction of shell 4 be one parallel to shell plane.
The Hall sensor 2 includes being used for detecting the sensing unit 20 of magnetic induction intensity, and the sensing unit 20 by
Wafer is constituted.The Hall sensor 2 can be integrated on the control chip 3.
The control chip 3 can be asic chip, including the multiplexer being connected with each Hall sensor 2
30, and be sequentially connected in series with the multiplexer 30 preamplifier 31, analog-digital converter 32, the sum of digital processing unit 33
Weighted-voltage D/A converter 34.The multiplexer 30 is used to connect multiple Hall sensors 2 and receives each hall sensing
The magnitude of voltage U that device 2 is exportedH.The analog-digital converter 32 and the digital analog converter 34 are respectively used to turn analog signal
Change data signal into and convert digital signals into analog signal.The digital processing unit 33 is used for the analog-digital converter 32
Change into data signal to be handled, storage operation method in the digital processing unit 33, the operation method includes being used for according to electricity
Pressure value UHCalculated magnetic induction intensity B Hall effect formula, data fit polynomial function etc..
The control chip 3 is electrically connected with multiple Hall sensors 2, for receiving the magnitude of voltage UH, and according to
The magnitude of voltage UHThe real-time position information of the magnet 1 is calculated with the location parameter.Specifically, it is public according to Hall effect
Formula UH=K*IB/d calculates multiple magnitude of voltage UHThe corresponding magnetic induction intensity value B, wherein, K is the sensing unit
20 Hall coefficient, d is the thickness of the sensing unit 20, and I is the current density for flowing through the sensing unit 20.
By the location parameter of each Hall sensor 2 with calculating the obtained magnetic strength by Hall effect formula
Intensity level B is answered to be fitted the position pass for obtaining the magnetic induction intensity value B and the Hall sensor 2 by the way of data fitting
It is formula (being in the present embodiment polynomial function), the maximum when institutes of the magnetic induction intensity value B is obtained according to the relational expression operation
The location of magnet 1 information is stated, the positional information is the real-time position information of the magnet 1.
In order to which the present invention will be described in more detail, it is now assumed that the quantity of the Hall sensor 2 is five, five institutes
State the array in X direction of Hall sensor 2.The magnet 1 is of reciprocating vibration in X direction, is perceived using five Hall sensors 2
To magnetic induction intensity value B1, B2, B3, B4 and B5 of five positions.Because the position of five Hall sensors 2 is relative
Constant, therefore, the magnetic induction intensity that the nearest Hall sensor 2 is perceived with the central point of magnet 1 is maximum.
Also referring to Fig. 3 and Fig. 5, Fig. 3 is position view of the Hall sensor of the present invention in X-axis, and Fig. 5 is this hair
The bright algorithm integral operation flow chart being related to.One X-coordinate axle is set up with the orientation of five Hall sensors 2, along X
Direction is sequentially first Hall sensor 2, second Hall sensor 2, the 3rd Hall sensor 2, the 4th Hall
Sensor 2 and the 5th Hall sensor 2.The position for providing the 3rd Hall sensor 2 is zero coordinate points, i.e. X3=0mm,
Second Hall sensor 2 is X2=-0.5mm relative to the distance of the 3rd Hall sensor 2, the like, X1=-
1.0mm, X4=0.5mm, X5=1.0mm.
The magnetic induction intensity value B and the respective location parameter collected according to five Hall sensors 2,
It can obtain five data point data points (Xi, Bi), i=1,2,3,4,5.Utilize polynomial equation Y=a+bX+cX2+dX3+eX4Intend
Close out displacement X and magnetic induction intensity value B relational expression：B=a+bX+cX2+dX3+eX4。
Then according to above-mentioned relation formula B=a+bX+cX2+dX3+eX4Calculate the corresponding position of magnetic induction intensity value B maximums
Put.Specifically as shown in figure 4, Fig. 4 is Hall sensor present position of the present invention and the graph of relation of the magnetic induction intensity of detection.
The biquadratic curve obtained in Fig. 4 for the fitting of five (X, B) data, thus curve can obtain magnetic induction intensity value B it is maximum when and its
Corresponding position S.
It is above-mentioned that provide is the example with the detection of five Hall sensors, however, according to other embodiments of the invention,
2,3,4 or greater number of sensor can also be set；Its multinomial being fitted is n-1 rank multinomials (wherein, n
For the quantity of Hall sensor).It is appreciated that the quantity of Hall sensor is more, its accuracy of detection is higher.
Also referring to Fig. 6, Fig. 6 is the flow chart of the real-time displacement feedback method of microdevice of the present invention.It is described miniature
The real-time displacement feedback method of device is applied to the real-time displacement reponse system 100 of the microdevice, comprises the following steps：
S1, multiple Hall sensors 2 detect and export the magnet 1 in each position of Hall sensor 2 correspondence
The multiple magnitude of voltage U producedH；
S2, the control chip 3 receive the magnitude of voltage UH, each magnitude of voltage is calculated according to Hall effect formula
UHCorresponding magnetic induction intensity value B；
S3, the magnetic induction obtained according to the location parameter and the magnetic induction intensity value B using data fit approach
Intensity level B and the location parameter of the Hall sensor 2 function formula；
S4, obtained according to the function formula computing magnetic induction intensity value B it is maximum when the magnet 1 residing for it is real-time
Positional information；
S5, output real-time position information.
Wherein, in the step S2, the Hall effect formula is UH=K*IB/d；Wherein, UHFor institute in the step S1
State the magnitude of voltage that Hall sensor 2 is detected；K is the Hall coefficient of the sensing unit 20；I is to flow through the sensing unit 20
Current density；B is magnetic induction intensity value；D is the thickness of the sensing unit 20.
Compared with correlation technique, the real-time displacement reponse system 100 and its feedback method of the microdevice that the present invention is provided,
It passes through Hall sensor array and control chip 3 so that the displacement information of magnet 1 can directly feed back to application in real time
End, so as to be directly realized by the precise control of displacement；It not only can directly export the displacement information of magnet 1, and the control of displacement
Precision processed is unrelated with the rigging position of magnet 1, and magnet 1 demagnetizes on displacement information also without influence, using preceding without being calibrated.
Above-described is only embodiments of the present invention, it should be noted here that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, improvement can also be made, but these belong to the protection model of the present invention
Enclose.
Claims (10)
1. a kind of real-time displacement reponse system of microdevice, the microdevice includes the moving parts being reciprocally moveable, its
It is characterised by, the reponse system includes：
It is arranged at the magnet on the moving parts；
Multiple Hall sensors set by default location parameter, are passed for detecting and exporting the magnet in each Hall
Multiple magnitudes of voltage that sensor position correspondence is produced；
The control chip electrically connected with multiple Hall sensors, for receiving the magnitude of voltage, and according to the magnitude of voltage
The real-time position information of the magnet is calculated with the location parameter.
2. the real-time displacement reponse system of microdevice according to claim 1, it is characterised in that the microdevice is also
Including with the spaced shell of the moving parts；Between moving direction of multiple Hall sensors along the moving parts
Every being arranged on the shell.
3. the real-time displacement reponse system of microdevice according to claim 2, it is characterised in that the magnet has court
The cambered surface of the direction projection of the shell.
4. the real-time displacement reponse system of microdevice according to claim 1, it is characterised in that the control chip bag
Include the multiplexer being all connected with each Hall sensor, and the preposition amplification being sequentially connected in series with the multiplexer
Device, analog-digital converter, digital processing unit and digital analog converter.
5. the real-time displacement reponse system of microdevice according to claim 1, it is characterised in that the Hall sensor
Including the sensing unit for detecting magnetic induction intensity, and the sensing unit is made up of wafer.
6. the real-time displacement reponse system of microdevice according to claim 5, it is characterised in that the sensing unit with
The control chip is integrally disposed.
7. the real-time displacement feedback method of a kind of microdevice, it is characterised in that the feedback method is applied to such as claim
The real-time displacement reponse system of microdevice in 1-6 described in any one；The feedback method comprises the following steps：
S1, multiple Hall sensors detect and export the magnet in many of each Hall sensor position correspondence generation
Individual magnitude of voltage；
S2, the control chip receive the magnitude of voltage, calculate each magnitude of voltage according to Hall effect formula corresponding
Magnetic induction intensity value；
S3, the letter for being fitted using data fit approach the location parameter for obtaining the magnetic induction intensity value and the Hall sensor
Number formula；
S4, obtained according to the function formula computing magnetic induction intensity value it is maximum when the magnet residing for real time position letter
Breath；
S5, output real-time position information.
8. the real-time displacement feedback method of microdevice according to claim 7, it is characterised in that the microdevice is also
Including with the spaced shell of the moving parts；Between moving direction of multiple Hall sensors along the moving parts
Every being arranged on the shell.
9. the real-time displacement feedback method of microdevice according to claim 8, it is characterised in that the magnet has court
The cambered surface of the direction projection of the shell.
10. the real-time displacement feedback method of microdevice according to claim 7, it is characterised in that the hall sensing
Device includes the sensing unit for being used to detect magnetic induction intensity, and the sensing unit is made up of wafer；
In the step S2, the Hall effect formula is UH=K*IB/d；Wherein, UHThe Hall described in the step S1 is passed
The magnitude of voltage that sensor is detected；K is the Hall coefficient of the sensing unit；I is the current density for flowing through the sensing unit；B
For magnetic induction intensity value；D is the thickness of the sensing unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710063126.7A CN106949822B (en) | 2017-01-24 | 2017-01-24 | Real-time displacement feedback system and feedback method of micro device |
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|---|---|---|---|
| CN201710063126.7A CN106949822B (en) | 2017-01-24 | 2017-01-24 | Real-time displacement feedback system and feedback method of micro device |
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| CN106949822A true CN106949822A (en) | 2017-07-14 |
| CN106949822B CN106949822B (en) | 2020-11-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110324455A (en) * | 2018-03-31 | 2019-10-11 | 广东欧珀移动通信有限公司 | The control method of electronic device and electronic device |
| CN111272053A (en) * | 2020-03-04 | 2020-06-12 | 西安长峰机电研究所 | Self-adaptive displacement detection device and method based on planar magnetic induction sensor |
| CN111486779A (en) * | 2020-04-14 | 2020-08-04 | 瑞声科技(新加坡)有限公司 | Signal processing method and device and electronic equipment |
| CN112190463A (en) * | 2020-09-15 | 2021-01-08 | 上海钧控机器人有限公司 | Moxa stick propeller, moxa head and moxa stick combustion length measuring and calculating method |
| CN112748385A (en) * | 2020-12-29 | 2021-05-04 | 山东省科学院海洋仪器仪表研究所 | Calibration device and method for bivalve aquatic organism behavior monitoring sensing probe |
| CN113418440A (en) * | 2021-08-05 | 2021-09-21 | 重庆编福科技有限公司 | Non-contact position detection method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110324455A (en) * | 2018-03-31 | 2019-10-11 | 广东欧珀移动通信有限公司 | The control method of electronic device and electronic device |
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| CN111272053A (en) * | 2020-03-04 | 2020-06-12 | 西安长峰机电研究所 | Self-adaptive displacement detection device and method based on planar magnetic induction sensor |
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| CN112190463A (en) * | 2020-09-15 | 2021-01-08 | 上海钧控机器人有限公司 | Moxa stick propeller, moxa head and moxa stick combustion length measuring and calculating method |
| CN112748385A (en) * | 2020-12-29 | 2021-05-04 | 山东省科学院海洋仪器仪表研究所 | Calibration device and method for bivalve aquatic organism behavior monitoring sensing probe |
| CN113418440A (en) * | 2021-08-05 | 2021-09-21 | 重庆编福科技有限公司 | Non-contact position detection method |
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| CN106949822B (en) | 2020-11-17 |
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