CN203643398U - Pulsed eddy current array imaging detection system - Google Patents
Pulsed eddy current array imaging detection system Download PDFInfo
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- CN203643398U CN203643398U CN201320727228.1U CN201320727228U CN203643398U CN 203643398 U CN203643398 U CN 203643398U CN 201320727228 U CN201320727228 U CN 201320727228U CN 203643398 U CN203643398 U CN 203643398U
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Abstract
The utility model discloses a pulsed eddy current array imaging detection system which comprises a detection system host, an array type eddy current detection probe and a pre-amplifier, wherein the array type eddy current detection probe comprises an excitation drive unit and multiple detection coils; the multiple detection coils are driven to generate an electromagnetic field by the excitation drive unit; the multiple detection coils are connected with the detection system host through the pre-amplifier; the detection system host is also connected with the excitation drive unit. Compared with the prior art, the pulsed eddy current array imaging detection system has the characteristics of capacity of acquiring thickness information of detected materials, with high testing speed, high measurement accuracy and high reliability.
Description
Technical field
The utility model belongs to defects detection field, particularly impulse eddy current array image-forming detection system.
Background technology
Along with the development of national economy, China is during 11th Five-Year to ten two or five, and the annual requirement of high-test metal material increases considerably, and obviously presents the development trend of heavy caliber.Such as requiring corrosion-resistant, anti-extrusion automobile bearing bar etc., increasing energy infrastructure and auto industry being dropped into along with country is become to the focus of demand.Thus, the Non-Destructive Testing these quality of finished product being ensured has proposed method and technical new problem.
At present, in the time that the high speed that realizes large area scope is measured, be generally to adopt mechanical type scanning probe to realize, specifically on single sensor, configure mechanical driving mechanism, under the drive of mechanical driving mechanism, single sensor can carry out scan-type action.
But above-mentioned traditional metering system still exists that test speed is slow, measuring accuracy is low and the defect of poor reliability, but also cannot obtain the thickness information of tested material.
In view of this, the inventor, for above-mentioned defect further investigation of the prior art, has this case to produce then.
Utility model content
The purpose of this utility model is to provide impulse eddy current array image-forming detection system, has that test speed is slow, measuring accuracy is low, poor reliability and cannot obtain the problem of tested material thickness information to solve prior art.
In order to reach above-mentioned purpose, solution of the present utility model is:
Impulse eddy current array image-forming detection system, wherein, comprise detection system main frame, array eddy current probe and prime amplifier, this array eddy current probe has excitation driver element and several magnetic test coils, this several magnetic test coil excited target drive unit drives and generating an electromagnetic field; These several magnetic test coils are connected with detection system main frame by prime amplifier, and this detection system main frame is also connected with excitation driver element.
Further, this array eddy current probe also has multiplexer, and this multiplexer is arranged between prime amplifier and several magnetic test coils.
Further, array eddy current probe adopts flexible PCB to make.
Further, this detection system main frame has pocket computer, single-chip microcomputer, DDS, voltage comparator, subtracter, power amplifier, signal amplifies and modulate circuit, trigger collection module and usb data acquisition module, this single-chip microcomputer is communicated by letter and is connected with pocket computer, this single-chip microcomputer passes through DDS successively, voltage comparator, subtracter is connected with excitation driver element with power amplifier, this prime amplifier also amplifies by signal successively and modulate circuit is connected with pocket computer with usb data acquisition module, this subtracter is also connected with usb data acquisition module by trigger collection module.
Adopt after said structure, the utility model at least has following beneficial effect:
One, the utility model is owing to being provided with several magnetic test coils simultaneously, so do not need the high speed that uses mechanical type scanning probe can realize large area scope to measure, and can reach and single measuring accuracy and the resolution that sensor is identical, can effectively improve the test speed of sensing system.
Two, the utility model, because several magnetic test coils can produce mutual inductance each other, so can detect the crackle of different directions, obtains more defect information; Because coil quantity is more, the blind area to some particular orientation defect be can eliminate by different combinations simultaneously, measuring accuracy and reliability improved.
Three, on tested sample, induce instantaneous eddy current by the momentary current producing in coil; Under the effect of exciting current, in this coil, can produce a pulsed magnetic field for decay fast, instantaneous eddy current is propagated in the lump with the magnetic-pulse of decay fast in material, form the induction field of a decay, magnetic test coil is exported series of voltage-time signal, because the pulse producing is made up of a row broader frequency spectrum, so the signal of response has comprised important depth information, this is just for the quantitative evaluation of material provides important foundation.
Four, the utility model is further owing to can adopting flexible PCB, so its version design can be versatile and flexible, probe profile can be designed according to the shape face of actual detected object, easily the part of complex surface shape is detected, effectively overcoming and eliminating Lift-off effect affects.
Brief description of the drawings
Fig. 1 is the system chart that the utility model relates to impulse eddy current array image-forming detection system.
In figure:
Detection system main frame 1 pocket computer 11
Single-chip microcomputer 12 DDS 13
Array eddy current probe 2 encourages driver element 21
Embodiment
In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.
As shown in Figure 1, the utility model relates to impulse eddy current array image-forming detection system, comprise detection system main frame 1, array eddy current probe 2 and prime amplifier 3, this array eddy current probe 2 has excitation driver element 21 and several magnetic test coils 22, and these several magnetic test coil 22 excited target driver elements 21 drive and generate an electromagnetic field; These several magnetic test coils 22 are connected with detection system main frame 1 by prime amplifier 3, and this detection system main frame 1 is also connected with excitation driver element 21.
Like this, the utility model is owing to being provided with several magnetic test coils 22 simultaneously, so do not need the high speed that uses mechanical type scanning probe can realize large area scope to measure, and can reach and single measuring accuracy and the resolution that sensor is identical, can effectively improve the test speed of sensing system.Because several magnetic test coils 22 can produce mutual inductance each other, so can detect the crackle of different directions simultaneously, obtain more defect information; Because coil quantity is more, the blind area to some particular orientation defect be can eliminate by different combinations simultaneously, measuring accuracy and reliability improved.In addition, the utility model induces instantaneous eddy current by the momentary current producing in coil on tested sample; Under the effect of exciting current, in this coil, can produce a pulsed magnetic field for decay fast, instantaneous eddy current is propagated in the lump with the magnetic-pulse of decay fast in material, form the induction field of a decay, 22 output series of voltage-time signals of magnetic test coil, because the pulse producing is made up of a row broader frequency spectrum, so the signal of response has comprised important depth information, this is just for the quantitative evaluation of material provides important foundation.
This array eddy current probe 2 also has multiplexer, and this multiplexer is arranged between prime amplifier 3 and several magnetic test coils 22, gets on thereby the eddy current corresponding signal that different magnetic test coils 22 are obtained is sent to detection system main frame 1.
Can be versatile and flexible in order to allow version design, probe profile can be designed according to the shape face of actual detected object, array eddy current probe 2 adopts flexible PCB to make.So, the utility model can detect the part of complex surface shape easily, and effectively overcoming and eliminating Lift-off effect affects.
As shown in Figure 1, more specifically, this detection system main frame 1 has pocket computer 11, single-chip microcomputer 12, DDS13, voltage comparator 14, subtracter 15, power amplifier 16, signal amplifies and modulate circuit 17, trigger collection module 18 and usb data acquisition module 19, this single-chip microcomputer 12 is connected with pocket computer 11 communications, this single-chip microcomputer 12 passes through DDS13 successively, voltage comparator 14, subtracter 15 is connected with excitation driver element 21 with power amplifier 16, this prime amplifier 3 also amplifies by signal successively and modulate circuit 17 is connected with pocket computer with usb data acquisition module 19, this subtracter 15 is also connected with usb data acquisition module 19 by trigger collection module 18.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.
Claims (4)
1. impulse eddy current array image-forming detection system, it is characterized in that, comprise detection system main frame, array eddy current probe and prime amplifier, this array eddy current probe has excitation driver element and several magnetic test coils, this several magnetic test coil excited target drive unit drives and generating an electromagnetic field; These several magnetic test coils are connected with detection system main frame by prime amplifier, and this detection system main frame is also connected with excitation driver element.
2. impulse eddy current array image-forming detection system as claimed in claim 1, is characterized in that, this array eddy current probe also has multiplexer, and this multiplexer is arranged between prime amplifier and several magnetic test coils.
3. impulse eddy current array image-forming detection system as claimed in claim 1, is characterized in that, array eddy current probe adopts flexible PCB to make.
4. impulse eddy current array image-forming detection system as claimed in claim 1, it is characterized in that, this detection system main frame has pocket computer, single-chip microcomputer, DDS, voltage comparator, subtracter, power amplifier, signal amplifies and modulate circuit, trigger collection module and usb data acquisition module, this single-chip microcomputer is communicated by letter and is connected with pocket computer, this single-chip microcomputer passes through DDS successively, voltage comparator, subtracter is connected with excitation driver element with power amplifier, this prime amplifier also amplifies by signal successively and modulate circuit is connected with pocket computer with usb data acquisition module, this subtracter is also connected with usb data acquisition module by trigger collection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320727228.1U CN203643398U (en) | 2013-11-18 | 2013-11-18 | Pulsed eddy current array imaging detection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320727228.1U CN203643398U (en) | 2013-11-18 | 2013-11-18 | Pulsed eddy current array imaging detection system |
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| CN203643398U true CN203643398U (en) | 2014-06-11 |
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| CN201320727228.1U Expired - Fee Related CN203643398U (en) | 2013-11-18 | 2013-11-18 | Pulsed eddy current array imaging detection system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548350A (en) * | 2016-01-26 | 2016-05-04 | 江苏理工学院 | Pulsed eddy-current defect detection imaging system based on filleted-corner rectangular array probe |
| CN106403799A (en) * | 2016-08-29 | 2017-02-15 | 爱德森（厦门）电子有限公司 | Device and method used for automatically inhibiting absolute eddy current detection signal from drifting |
| CN106596711A (en) * | 2016-10-24 | 2017-04-26 | 合肥工业大学 | Hydraulic cylinder detection system based on pulsed eddy current |
| CN108124374A (en) * | 2018-02-05 | 2018-06-05 | 中国科学院近代物理研究所 | Continuous wave draws synchrotron slowly |
| CN108375629A (en) * | 2018-01-30 | 2018-08-07 | 昆明理工大学 | A kind of pulsed eddy-current nondestructive test system based on flexible PCB technology |
| CN109764800A (en) * | 2019-01-15 | 2019-05-17 | 西南石油大学 | A pipeline corrosion wall thickness detection system based on eddy current thermal imaging array |
| CN109828023A (en) * | 2019-03-29 | 2019-05-31 | 电子科技大学 | A kind of defect of metallic member quantitative detecting method and device based on vortex imaging |
| CN113260414A (en) * | 2018-11-30 | 2021-08-13 | 奥赛拉公司 | System and method for enhancing the efficacy of ultrasound therapy |
-
2013
- 2013-11-18 CN CN201320727228.1U patent/CN203643398U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548350A (en) * | 2016-01-26 | 2016-05-04 | 江苏理工学院 | Pulsed eddy-current defect detection imaging system based on filleted-corner rectangular array probe |
| CN105548350B (en) * | 2016-01-26 | 2018-12-25 | 江苏理工学院 | Impulse eddy current defects detection imaging system based on round rectangle array probe |
| CN106403799A (en) * | 2016-08-29 | 2017-02-15 | 爱德森（厦门）电子有限公司 | Device and method used for automatically inhibiting absolute eddy current detection signal from drifting |
| CN106403799B (en) * | 2016-08-29 | 2019-03-22 | 爱德森（厦门）电子有限公司 | A kind of device and method of automatic inhibition absolute type eddy current testing signal drift |
| CN106596711A (en) * | 2016-10-24 | 2017-04-26 | 合肥工业大学 | Hydraulic cylinder detection system based on pulsed eddy current |
| CN108375629A (en) * | 2018-01-30 | 2018-08-07 | 昆明理工大学 | A kind of pulsed eddy-current nondestructive test system based on flexible PCB technology |
| CN108124374A (en) * | 2018-02-05 | 2018-06-05 | 中国科学院近代物理研究所 | Continuous wave draws synchrotron slowly |
| CN108124374B (en) * | 2018-02-05 | 2024-04-26 | 中国科学院近代物理研究所 | Continuous wave slow-extraction synchrotron |
| CN113260414A (en) * | 2018-11-30 | 2021-08-13 | 奥赛拉公司 | System and method for enhancing the efficacy of ultrasound therapy |
| CN109764800A (en) * | 2019-01-15 | 2019-05-17 | 西南石油大学 | A pipeline corrosion wall thickness detection system based on eddy current thermal imaging array |
| CN109828023A (en) * | 2019-03-29 | 2019-05-31 | 电子科技大学 | A kind of defect of metallic member quantitative detecting method and device based on vortex imaging |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20151118 |
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| EXPY | Termination of patent right or utility model |