CN209246935U - A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging - Google Patents
A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging Download PDFInfo
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- CN209246935U CN209246935U CN201821099332.XU CN201821099332U CN209246935U CN 209246935 U CN209246935 U CN 209246935U CN 201821099332 U CN201821099332 U CN 201821099332U CN 209246935 U CN209246935 U CN 209246935U
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- workpiece
- electrical impedance
- system based
- detection system
- impedance imaging
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Abstract
The utility model discloses a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, system includes: test container, stepper motor, motor control module, rotating platform, signal acquisition measurement module, driving source and computer.Workpiece is fixed in designed test container, motor can control the container to rotate or control measuring unit movement.Motor control module is made of stepper motor driver and controller, and computer is transferred to be controlled.Measuring device is mainly made of coil and insulating support, and acquisition device carries out the synchronous acquisition and record of data using capture card.Data acquire measurement module and data are transmitted to computer, distribution of the computer to collected voltage curve calculated magnetic induction intensity, to which the distribution of conductivity image to workpiece carries out three-dimensional reconstruction, is compared by the specific outer dimension with required workpiece, judge whether workpiece meets demand.
Description
Technical field
The utility model relates to electrical impedance imaging field, in particular to outside a kind of workpiece based on magnetic detection electrical impedance imaging
Shape detection system.
Background technique
Magnetic detection electrical impedance imaging (magnetic detection electrical impedance tomography,
MDEIT it is) a kind of novel imaging technique, is electrical impedance imaging (electrical impedance tomography, EIT)
One important branch of technology.Magnetic detection electrical impedance imaging by injecting a certain range of safe exciting current to imaging body,
And then induced magnetic field is generated outside imaging body, by the magnetic field data around acquisition imaging body come the electricity inside reestablishment imaging body
Conductance distribution.It does not need large-scale detection device, does not have special requirement to environment.
Utility model content
The utility model proposes a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, the utility model
By rebuilding the three-dimensional conductivity distribution of workpiece, judge whether workpiece meets demand.The utility model is measured using multiple groups coil,
The accuracy for improving measurement improves the quality of conductivity (spectrum) image reconstruction, described below:
A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, system include: test container, stepping electricity
Mechanical, electrical machine control module, rotating platform, signal acquisition measurement module, driving source and computer, wherein
Workpiece is fixed in designed test container, driving source provides a specific voltage drive to measurement workpiece
Or current excitation；Motor can control the container to rotate or control measuring unit movement；Motor control module controls stepper motor
Direction of rotation and step-length；Data acquire measurement module and collected data are transmitted to computer, and computer is to collected number
According to the distribution of calculated magnetic induction intensity, to carry out three-dimensional reconstruction to the distribution of conductivity image of workpiece, by with required workpiece
Specific outer dimension compare, judge whether workpiece meets demand.
The test container is the square container being made into using transparent insulation material, and a band is respectively opened at each face center
The aperture of screw thread, insulating bar are powered by the fixed workpiece of aperture, the top fixed electrode film of insulating bar to workpiece.
The driving source is single-frequency or multi-frequency and amplitude variable voltage source or current source, and uses DPTT double-pole triple throw
Switch control.
The step motor control module is made of stepper motor driver and controller, and transfers to calculate by serial ports
Machine is controlled.
The signal acquisition measurement module includes acquisition device and measuring device, and wherein acquisition device is by acquisition coil and branch
Frame composition, measuring device are stored using the measurement that capture card carries out data.
The stepper motor be rotation rate-controllable, angle, direction of rotation motor.
The rotating platform is to be made using insulating materials, and specific size designs according to actual needs.
The acquisition coil in pairs, acquires the data in different radii for 4 respectively.
The beneficial effect of technical solution provided by the utility model is:
The utility model devises a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, the utility model
By giving three pairs of excitation electrode power supplies to change inside workpiece field distribution respectively, and then change outer workpiece magnetic induction intensity point
Cloth, measuring coil obtain measured workpiece external scan path on multiple groups Magnetic Induction Density Distribution curve, capture card by data into
It goes and saves to computer, computer handles multiple groups magnetic induction intensity curve, rebuilds the distribution of conductivity of inside workpiece
Image, the utility model enrich the information content to Distribution of Magnetic Field measurement, by carrying out three-dimensional conductivity reconstruction to workpiece, according to
Whether the distribution situation of conductivity, confirmation workpiece configurations meet demand.It measures, avoids simultaneously by using multipair coil
Measurement error caused by when single coil acquires, improves the quality of conductivity (spectrum) image reconstruction.The utility model provides
For a kind of detection device of the unqualified workpiece of batch production, avoid because workpiece it is unqualified caused by major hidden danger.
Detailed description of the invention
Fig. 1 is the schematic illustration of magnetic detection electrical impedance imaging；
Fig. 2 is measurement container provided by the utility model and driving source structural schematic diagram；
Fig. 3 is the structure chart of the workpiece configurations detection system of magnetic detection electrical impedance imaging provided by the utility model；
Fig. 4 is the process for using figure of the workpiece configurations detection system of magnetic detection electrical impedance imaging provided by the utility model；
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
In order to detect whether the workpiece configurations of factory's batch production meet demand, the utility model provides a kind of based on magnetic spy
The workpiece configurations detection system of the anti-imaging of measuring resistance, system construction drawing referring to fig. 2, Fig. 3, in Fig. 21 be insulation transparent pros
Body container, 2 be threaded aperture, 3 be electrode slice or insulating materials, 4 be workpiece, 5 be hollow threaded insulating bar, be detailed in
It is described below:
A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, comprising: test container is by 1,2,3,4,5
Composition, wherein three pairs of excitation electrodes are respectively a and b, c and d, e and f, signal acquisition measurement module is by coil, bracket, capture card
Composition, stepper motor, motor control assembly module and computer, in which:
Three pairs of electrodes are connected with insulating bar, and insulating bar is made of transparent insulation material, inner hollow can admittance line, outer surface
It is threaded, it is fixed with threaded aperture 2.
Further, workpiece is placed in container center, when a pair of electrodes therein is powered, other two pairs of electrodes insulating materials
Instead of playing fixed function to workpiece.
Further, driving source is connected by conducting wire with electrode slice, and driving source is using single-frequency or multi-frequency and amplitude
Variable voltage source or current source, and export using DPTT double-pole triple throw switch control.
Further, the container is fixed on the rotating platform, as motor rotates together.
Further, 4 coils are fixed on bracket, and bracket can move horizontally on the stationary platform, at the same to coil into
Row up and down adjustment meets the measurement of different height.
Further, 4 coils in pairs, measure four groups of data of sustained height different radii respectively.
Further, data acquisition device uses capture card, 4 road acquisition channels is arranged, while acquiring the data of 4 groups of coils
And it stores.
Further, device and electric machine controller composition is driven by motor in motor control assembly, and computer is transferred to be controlled.
Further, distribution of the computer to collected voltage curve calculated magnetic induction intensity, thus to the electricity of workpiece
Conductance distributed image carries out three-dimensional reconstruction, is compared by the specific outer dimension with required workpiece, judges whether workpiece accords with
Conjunction demand.
A kind of work based on magnetic detection electrical impedance imaging provided by the utility model is illustrated with specific embodiment below
Part appearance detection system uses, comprising the following steps:
(1) described a, b are connected to excitation electrode；C, d, e, f using insulating materials and play the role of fixed workpiece, and juxtaposition is held
The face a, b of device is perpendicular to Z-direction.
(2) measuring device is measured using coil, and four coils in pairs, measure sustained height different radii respectively
Four groups of data.
(3) for computer control electric machine controller to realize the control to motor, it is solid that setting parameter rotates motor every time
Determine angle.The measuring coil relatively moves the scanning carried out on two-dimensional directional outside the workpiece, and measuring device passes through described
The collected outer workpiece multiple groups Magnetic Induction Density Distribution curve of measuring coil.
(4) until workpiece body rotate a circle, change the DPTT double-pole triple throw switch state, connect described c, d to excitation electrode,
A, b, e, f using insulating materials and play the role of fixed workpiece, and the face c, d of juxtaposition container repeats aforesaid operations perpendicular to Z-direction
(2) and (3).
(5) until workpiece rotation one week, change the DPTT double-pole triple throw switch state, connect described e, f to motivating electrode, a,
B, c, d using insulating materials and play the role of fixed workpiece, and the face e, f of juxtaposition container is perpendicular to Z-direction；Repeat aforesaid operations
(2) and (3).
(6) data acquisition device uses capture card, and 4 road acquisition channels are arranged, and acquires the data of 4 groups of coils in real time, and will
Data are stored.
(7) distribution of the computer to collected voltage curve calculated magnetic induction intensity, thus to the conductivity point of workpiece
Cloth image carries out three-dimensional reconstruction, is compared by the specific outer dimension with required workpiece, judges whether workpiece meets demand.
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model is real
It is for illustration only to apply a serial number, does not represent the advantages or disadvantages of the embodiments.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (8)
1. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging, system include: test container, stepper motor,
Motor control module, rotating platform, signal acquisition measurement module, driving source and computer, wherein
Workpiece is fixed in designed test container, driving source to measurement workpiece provide a specific voltage drive or
Current excitation；Motor can control the container to rotate or control measuring unit movement；The rotation of motor control module control stepper motor
Turn direction and step-length；Data acquire measurement module and collected data are transmitted to computer, and computer is to collected data meter
The distribution of magnetic induction intensity is calculated, so that the distribution of conductivity image to workpiece carries out three-dimensional reconstruction, passes through the tool with required workpiece
Body outer dimension compares, and judges whether workpiece meets demand.
2. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In, the test container be the square container being made into using transparent insulation material, each face center respectively open one it is threaded
Aperture, insulating bar gives workpiece power supply by the fixed workpiece of aperture, the top fixed electrode film of insulating bar.
3. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In the driving source is single-frequency or multi-frequency and amplitude variable voltage source or current source, and is switched using DPTT double-pole triple throw
Control.
4. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In, the step motor control module is made of stepper motor driver and controller, and by serial ports transfer to computer into
Row control.
5. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In the signal acquisition measurement module includes acquisition device and measuring device, and wherein acquisition device is by acquisition coil and bracket group
At measurement module is stored using the measurement that capture card carries out data.
6. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In the stepper motor be rotation rate-controllable, angle, direction of rotation motor.
7. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 1, feature exist
In the rotating platform is to be made using insulating materials, and specific size designs according to actual needs.
8. a kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging according to claim 5, feature exist
In the acquisition coil in pairs, acquires the data in different radii for 4 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821099332.XU CN209246935U (en) | 2018-07-11 | 2018-07-11 | A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821099332.XU CN209246935U (en) | 2018-07-11 | 2018-07-11 | A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging |
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| CN209246935U true CN209246935U (en) | 2019-08-13 |
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| CN201821099332.XU Expired - Fee Related CN209246935U (en) | 2018-07-11 | 2018-07-11 | A kind of workpiece configurations detection system based on magnetic detection electrical impedance imaging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662711A (en) * | 2017-10-17 | 2019-04-23 | 天津工业大学 | A kind of measuring system and its information acquisition method of conductivity imaging |
| CN113375545A (en) * | 2020-10-12 | 2021-09-10 | 爱德森（厦门）电子有限公司 | Method and device for detecting surface curvature of metal material |
-
2018
- 2018-07-11 CN CN201821099332.XU patent/CN209246935U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109662711A (en) * | 2017-10-17 | 2019-04-23 | 天津工业大学 | A kind of measuring system and its information acquisition method of conductivity imaging |
| CN113375545A (en) * | 2020-10-12 | 2021-09-10 | 爱德森（厦门）电子有限公司 | Method and device for detecting surface curvature of metal material |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20200711 |
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| CF01 | Termination of patent right due to non-payment of annual fee |