CN102879461A - Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle - Google Patents
Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle Download PDFInfo
- Publication number
- CN102879461A CN102879461A CN2012103735778A CN201210373577A CN102879461A CN 102879461 A CN102879461 A CN 102879461A CN 2012103735778 A CN2012103735778 A CN 2012103735778A CN 201210373577 A CN201210373577 A CN 201210373577A CN 102879461 A CN102879461 A CN 102879461A
- Authority
- CN
- China
- Prior art keywords
- coil
- magnetic test
- coil winding
- differential detection
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a non-directional electromagnetic detecting sensor based on a crosslinking differential detecting principle. A crosslinking combined probe and a differential hybrid algorithm principle are used, the sensor comprises two sets of cross differential detecting coils, which are wound on a coil winding frame concentrically with angle difference of 45 DEG, and accordingly electromagnetic eddy current induction signal difference is guaranteed to be output for cracks in optional direction by the sensor, the problem of crack blind area in the direction of 45 DEG of the differential electromagnetic detecting sensor composed of the two detecting coils by crossing is eliminated, and non-missed detection is achieved.
Description
Technical field
The present invention relates to a kind of Non-Destructive Testing sensor, particularly relate to a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle.
Background technology
Conventional eddy current probe is owing to existing the impact of Lift-off effect, and the workpiece for the metal material surface roughness is large, testing requirement is higher is difficult to implement effective detection.The differential electromagnetic detecting sensor that is formed by two magnetic test coil cross quadratures, characteristic with the interference that suppresses Lift-off effect, the metal material that is specially adapted to surface irregularity detects, when transversal crack is arrived in the sensor scanning, the vortex field that transverse coil produces is subject to crackle and has the greatest impact, and the vortex field that longitudinal coil produces is subject to crackle impact minimum, so two coils have maximum poor output, can detect reliably this defective.In like manner, when the sensor scanning when the longitudinal crack, it is minimum that the vortex field that transverse coil produces is subject to the crackle impact, and the vortex field that longitudinal coil produces is subject to crackle and has the greatest impact, so two coils have maximum poor output, can detect reliably this defective.Quadrature sensor is the most responsive to these two kinds of defects detection.From the above, the coil vortex field changes the angle difference of depending between direction of check and each coil.When direction of check and coil became parallel, the coil vortex field changed maximum; When direction of check became vertical with coil, the coil vortex field changed minimum.When direction of check is oblique crackle, two of quadrature sensors coil-induced to the vortex field different variations all occurs, when direction of check gradually changed from 0 degree to 45 degree with two coil angles of quadrature, two induction coil output differences diminished gradually, so detection sensitivity reduces gradually.When crackle and coil in angle of 45 degrees the time, two coil-induced consistent eddy current signals outputs.So concerning quadrature sensor, the direction of check of 45 degree is the blind area, can't detect.
Summary of the invention
The object of the invention is to, for the sensitivity that overcomes the differential electromagnetic detecting sensor that two magnetic test coil cross quadratures form diminishes and detects the problem of blind area, developed a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle, adopt crosslinked coupling probe and differential hybrid algorithm, eliminated the problem of 45 degree direction crackle blind areas, realized without undetected detection.
The technical solution adopted for the present invention to solve the technical problems is: a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle comprises four magnetic test coils, coil winding skeleton, sensor output terminal interface, shell, top cover; Described four concentric cross windings of magnetic test coil are fixed on the coil winding skeleton, two magnetic test coil quadratures form one group of cruciform differential detection coil groups, other two magnetic test coil quadratures form another group cruciform differential detection coil groups, differ miter angle between two groups of cruciform differential detection coil groups.When same group of cruciform differential detection of crackle coil groups with crackle in angle of 45 degrees the time, the output of no signal difference, and this moment, another group cruciform differential detection coil groups was parallel with crackle, vertical, two magnetic test coils of this group produce the output of peak signal difference, thereby have guaranteed the crackle all vortex induction signal difference output of sensor to any direction.Described four magnetic test coils have overcrossing point and the undercrossing point, and the undercrossing point that is positioned at sensor base is sensor scanning central point.Described four magnetic test coils are connected to respectively sensor output terminal interface, two groups of signals that cruciform differential detection coil groups gathers, transfer to the dual-channel electromagnetic detecting instrument by sensor output terminal interface, again this double-channel signal is carried out vector superposed computing, the crackle that guarantees different directions all can access the peak signal difference, then this superposed signal difference is shown output by same impedance plane, guarantee that the different directions crackle obtains peak signal and shows output; Described coil winding skeleton is fixing in the enclosure; Described sensor output terminal interface is inlayed and is fixed on the top cover upper surface.The material of described four magnetic test coils is the red copper enameled wire, and the diameter of red copper enameled wire, the coil winding number of turn, coil winding cross-sectional area, coil winding width require to determine according to relevant electromagnetic detection frequency, precision and sensitivity.Described coil winding skeleton adopts the nonmetal solid materials such as nylon or duroplasts, and nonmetal solid material is easily processed, electromagnetic field that simultaneously can the Interference Detection coil stimulating.The shape of coil winding skeleton can be cylindrical, the ellipsoid bodily form or spherical according to testing requirement; Outside surface is processed with four concentric winding groove that differ miter angle, and the length equidimension of winding groove is determined according to winding cross-sectional area, the winding width of magnetic test coil.Described shell can adopt the nonmetal solid materials such as nylon, duroplasts, rubber, and the shape of shell is determined according to the coil winding frame configuration, can be drum-shaped, semielliptical is barrel-shaped or hemisphere is barrel-shaped.Drum-shaped shell bottom surface is scanning face, is applicable to the planar shaped workpiece sensing, and the barrel-shaped or barrel-shaped outer casing bottom end points of hemisphere of semielliptical is the scanning point, is applicable to the workpiece sensing of surface imperfection.Described top cover adopts the nonmetal solid materials such as aluminium alloy, stainless steel and other metal materials or nylon, duroplasts, rubber, is convenient to fixation of sensor output terminal interface.
The invention has the beneficial effects as follows, a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle, adopt crosslinked coupling probe and differential hybrid algorithm principle, sensor is differed miter angle, is with one heart twined and be distributed on the coil winding skeleton by two groups of cruciform differential detection coil groups, guaranteed that sensor has the output of electromagnetic eddy induced signal difference to the crackle of any direction, eliminated the problem of 45 degree direction crackle blind areas of the differential electromagnetic detecting sensor that two magnetic test coil cross quadratures form, realized without undetected detection.
The invention will be further described below in conjunction with embodiment.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the sensor outward appearance schematic three dimensional views of first embodiment of the invention.
Fig. 2 is the sensor internal structure three-dimensional schematic diagram of first embodiment of the invention.
Fig. 3 is sensor magnetic test coil and the coil winding skeleton schematic three dimensional views of first embodiment of the invention.
Fig. 4 is sensor magnetic test coil and the coil winding skeleton schematic top plan view of first embodiment of the invention.
Fig. 5 is that the cell winding of first embodiment of the invention twines the skeleton schematic three dimensional views.
Fig. 6 is that the cell winding of first embodiment of the invention twines the skeleton schematic top plan view.
Fig. 7 is the sensor outward appearance schematic three dimensional views of second embodiment of the invention.
Fig. 8 is the sensor internal structure three-dimensional schematic diagram of second embodiment of the invention.
Fig. 9 is sensor magnetic test coil and the coil winding skeleton schematic side view of second embodiment of the invention.
Figure 10 is sensor magnetic test coil and the coil winding skeleton schematic top plan view of second embodiment of the invention.
Figure 11 is that the cell winding of second embodiment of the invention twines the skeleton schematic side view.
Figure 12 is that the cell winding of second embodiment of the invention twines the skeleton schematic top plan view.
Figure 13 is the sensor outward appearance schematic three dimensional views of third embodiment of the invention.
Figure 14 is the sensor internal structure three-dimensional schematic diagram of third embodiment of the invention.
Figure 15 is sensor magnetic test coil and the coil winding skeleton schematic side view of third embodiment of the invention.
Figure 16 is sensor magnetic test coil and the coil winding skeleton schematic top plan view of third embodiment of the invention.
Figure 17 is that the cell winding of third embodiment of the invention twines the skeleton schematic side view.
Figure 18 is that the cell winding of third embodiment of the invention twines the skeleton schematic top plan view.
Among the figure, 1. magnetic test coil, 2. coil winding skeleton (cylindrical), 3. sensor output terminal interface, 4. shell (flexible shape), 5. top cover, 6. one group of cruciform differential detection coil groups, 7. another group cruciform differential detection coil groups, 8. winding groove, 9. overcrossing point, 10. the undercrossing point, 11. coil winding skeletons (the ellipsoid bodily form), 12. shells (semielliptical is barrel-shaped), 13. coil winding skeleton (spherical), 14. shells (hemisphere is barrel-shaped).
Embodiment
In the first embodiment shown in Fig. 1,2,3,4,5,6, a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle comprises four magnetic test coils (1), coil winding skeleton (2), sensor output terminal interface (3), shell (4), top cover (5); Described four magnetic test coils (1) with one heart cross winding are fixed on the coil winding skeleton (2), two magnetic test coils (1) quadrature forms one group of cruciform differential detection coil groups (6), other two magnetic test coil quadratures form another group cruciform differential detection coil groups (7), differ miter angle between two groups of cruciform differential detection coil groups (6,7).Described four magnetic test coils (1) have overcrossing point (9) and the undercrossing point (10), and the undercrossing point (10) that is positioned at sensor base is sensor scanning central point; Described four magnetic test coils (1) are connected to respectively sensor output terminal interface (3); Described coil winding skeleton (2) is fixing in the enclosure; Described sensor output terminal interface (3) is inlayed and is fixed on top cover (5) upper surface.The material of described four magnetic test coils (1) is the red copper enameled wire, and the diameter of red copper enameled wire, the coil winding number of turn, coil winding cross-sectional area, coil winding width require to determine according to relevant electromagnetic detection frequency, precision and sensitivity.Described coil winding skeleton (2) adopts the nonmetal solid materials such as nylon or duroplasts, coil winding skeleton (2) be shaped as cylindrical; Outside surface is processed with four concentric winding groove (8) that differ miter angle, and the length equidimension of winding groove is determined according to winding cross-sectional area, the winding width of magnetic test coil (1).Described shell (4) is drum-shaped, and shell (4) can adopt the nonmetal solid materials such as nylon, duroplasts, rubber, and top cover (5) adopts the nonmetal solid materials such as aluminium alloy, stainless steel and other metal materials or nylon, duroplasts, rubber.In the scanning process, testing staff's hand-held sensor, the bottom surface of sensor is attached to tested surface of the work rectilinear direction uniform scanning, and the arbitrarily oriented crack defective of sensor process can both have peak signal to show output in the scanning path.
In the second embodiment shown in Fig. 7,8,9,10,11,12, different from the first embodiment of the present invention is:
Described coil winding skeleton be shaped as the ellipsoid bodily form (11), described shell is semielliptical barrel-shaped (12).
In the 3rd embodiment shown in Figure 13,14,15,16,17,18, different from the first embodiment of the present invention is:
Described coil winding skeleton be shaped as spherical (13), described shell is hemisphere barrel-shaped (14).
Above-described embodiment only is used for further specifying a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle of the present invention, but the present invention is not limited to embodiment, should be appreciated that in not departing from the scope of the present invention, can make multiple combination and change to above-described embodiment.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle is characterized in that: comprise four magnetic test coils, coil winding skeleton, sensor output terminal interface, shell, top cover; Described four concentric cross windings of magnetic test coil are fixed on the coil winding skeleton, two magnetic test coil quadratures form one group of cruciform differential detection coil groups, other two magnetic test coil quadratures form another group cruciform differential detection coil groups, differ miter angle between two groups of cruciform differential detection coil groups; Described four magnetic test coils have overcrossing point and the undercrossing point, and the undercrossing point that is positioned at sensor base is sensor scanning central point; Described four magnetic test coils are connected to respectively sensor output terminal interface; Described coil winding skeleton is fixing in the enclosure; Described sensor output terminal interface is inlayed and is fixed on the top cover upper surface.
2. a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle according to claim 1, it is characterized in that: the material of described four magnetic test coils is the red copper enameled wire, and the diameter of red copper enameled wire, the coil winding number of turn, coil winding cross-sectional area, coil winding width require to determine according to relevant electromagnetic detection frequency, precision and sensitivity.
3. a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle according to claim 1, it is characterized in that: described coil winding skeleton adopts the nonmetal solid materials such as nylon or duroplasts, and the shape of coil winding skeleton can be cylindrical, the ellipsoid bodily form or spherical according to testing requirement; Outside surface is processed with four concentric winding groove that differ miter angle, and the length equidimension of winding groove is determined according to winding cross-sectional area, the winding width of magnetic test coil.
4. a kind of non-oriented magnetic detecting sensor based on crosslinked formula differential detection principle according to claim 1, it is characterized in that: described shell can adopt the nonmetal solid materials such as nylon, duroplasts, rubber, the shape of shell is determined according to the coil winding frame configuration, can be drum-shaped, semielliptical is barrel-shaped or hemisphere is barrel-shaped; Described top cover adopts the nonmetal solid materials such as aluminium alloy, stainless steel and other metal materials or nylon, duroplasts, rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210373577.8A CN102879461B (en) | 2012-09-30 | 2012-09-30 | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210373577.8A CN102879461B (en) | 2012-09-30 | 2012-09-30 | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879461A true CN102879461A (en) | 2013-01-16 |
| CN102879461B CN102879461B (en) | 2014-12-03 |
Family
ID=47480865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210373577.8A Active CN102879461B (en) | 2012-09-30 | 2012-09-30 | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102879461B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196996B (en) * | 2013-04-17 | 2016-06-08 | 浙江大学 | A kind of eddy current testing device for carrying out metal defect detection and eddy current probe thereof |
| CN107490620A (en) * | 2017-07-27 | 2017-12-19 | 中国大唐集团科学技术研究院有限公司华中分公司 | Ni-based pored component inwall detection method and device |
| CN108872366A (en) * | 2018-07-23 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of adaptive quadrature Eddy Current Testing Transducer |
| CN110763755A (en) * | 2019-10-29 | 2020-02-07 | 广东省特种设备检测研究院珠海检测院 | Evaluation method capable of rapidly evaluating crack defect direction of metal material |
| CN111766295A (en) * | 2020-07-31 | 2020-10-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57143689A (en) * | 1981-01-22 | 1982-09-04 | Coin Controls | Coin selector |
| CN86203636U (en) * | 1986-05-30 | 1987-04-22 | 洛阳工学院 | Vortex flaw-sensing detector |
| US4855677A (en) * | 1988-03-11 | 1989-08-08 | Westinghouse Electric Corp. | Multiple coil eddy current probe and method of flaw detection |
| CN101034082A (en) * | 2007-01-11 | 2007-09-12 | 丁昱程 | Technology for eliminating detecting blind-area in end or edge for vortex detecting |
| CN101266227A (en) * | 2008-05-14 | 2008-09-17 | 哈尔滨工业大学 | Vortex flow electromagnetical detection probe for detecting meridian tyre steel wire cord defect and the detection method |
| CN102334028A (en) * | 2009-02-24 | 2012-01-25 | 丰田自动车株式会社 | Eddy current sensor and inspection method using the same |
| CN202886329U (en) * | 2012-09-30 | 2013-04-17 | 爱德森（厦门）电子有限公司 | Non-directional electromagnetic detection sensor based on cross-linking type differential detection principle |
-
2012
- 2012-09-30 CN CN201210373577.8A patent/CN102879461B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57143689A (en) * | 1981-01-22 | 1982-09-04 | Coin Controls | Coin selector |
| CN86203636U (en) * | 1986-05-30 | 1987-04-22 | 洛阳工学院 | Vortex flaw-sensing detector |
| US4855677A (en) * | 1988-03-11 | 1989-08-08 | Westinghouse Electric Corp. | Multiple coil eddy current probe and method of flaw detection |
| CN101034082A (en) * | 2007-01-11 | 2007-09-12 | 丁昱程 | Technology for eliminating detecting blind-area in end or edge for vortex detecting |
| CN101266227A (en) * | 2008-05-14 | 2008-09-17 | 哈尔滨工业大学 | Vortex flow electromagnetical detection probe for detecting meridian tyre steel wire cord defect and the detection method |
| CN102334028A (en) * | 2009-02-24 | 2012-01-25 | 丰田自动车株式会社 | Eddy current sensor and inspection method using the same |
| CN202886329U (en) * | 2012-09-30 | 2013-04-17 | 爱德森（厦门）电子有限公司 | Non-directional electromagnetic detection sensor based on cross-linking type differential detection principle |
Non-Patent Citations (1)
| Title |
|---|
| 黄建明 等: "焊缝电磁涡流检测技术", 《无损检测》, vol. 26, no. 2, 29 February 2004 (2004-02-29), pages 95 - 98 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196996B (en) * | 2013-04-17 | 2016-06-08 | 浙江大学 | A kind of eddy current testing device for carrying out metal defect detection and eddy current probe thereof |
| CN107490620A (en) * | 2017-07-27 | 2017-12-19 | 中国大唐集团科学技术研究院有限公司华中分公司 | Ni-based pored component inwall detection method and device |
| CN108872366A (en) * | 2018-07-23 | 2018-11-23 | 爱德森（厦门）电子有限公司 | A kind of adaptive quadrature Eddy Current Testing Transducer |
| CN108872366B (en) * | 2018-07-23 | 2021-12-21 | 爱德森（厦门）电子有限公司 | Self-adaptive orthogonal eddy current detection sensor |
| CN110763755A (en) * | 2019-10-29 | 2020-02-07 | 广东省特种设备检测研究院珠海检测院 | Evaluation method capable of rapidly evaluating crack defect direction of metal material |
| CN111766295A (en) * | 2020-07-31 | 2020-10-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
| CN111766295B (en) * | 2020-07-31 | 2022-12-13 | 广东汕头超声电子股份有限公司 | Eddy current detection probe for detecting steel rail welding seam and detection method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102879461B (en) | 2014-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103487503B (en) | A kind of rotating magnetic field eddy current probe | |
| CN103499404B (en) | Ferromagnetic component alterante stress measurement mechanism and measuring method thereof | |
| CN102879461B (en) | Non-directional electromagnetic detecting sensor based on crosslinking differential detecting principle | |
| CN109781838A (en) | A kind of vortex-ultrasonic inspection probe based on V-arrangement coil stimulating | |
| CN102375027B (en) | Eddy current system of orthogonal eddy current probe for multi-directional inspection | |
| CN103868986A (en) | Eddy detection probe for detecting internal surface defects in metal pipelines and detection method thereof | |
| CN202083672U (en) | Field quantum detection-based leakage magnetic probe | |
| US20150233868A1 (en) | Differential Sensor, Inspection System and Method for the Detection of Anomalies in Electrically Conductive Materials | |
| CN107064291A (en) | A kind of magnetic assembles impulse eddy current Coil Detector sensor | |
| CN109682882A (en) | A kind of Eddy Current Testing Transducer of high spatial resolution | |
| CN112782274A (en) | Magnetic-gathering eddy current sensor | |
| CN202886329U (en) | Non-directional electromagnetic detection sensor based on cross-linking type differential detection principle | |
| CN109444270A (en) | A kind of electromagnetic acoustic and impulse eddy current compound detection sensor | |
| CN103196996B (en) | A kind of eddy current testing device for carrying out metal defect detection and eddy current probe thereof | |
| CN103868987A (en) | Eddy detection probe for detecting surface multiple cracks of conductive structure and detection method thereof | |
| CN103018323A (en) | Aluminum alloy multilayer composite plate bolt hole crack defect in-service electromagnetic detection device | |
| CN204287111U (en) | A kind of externally wearing type three-phase vortex detection probe | |
| CN205538822U (en) | Nondestructive test device based on tunnel magnetism resistance transducer | |
| CN203720149U (en) | Cross-shaped eddy current detection probe | |
| CN111879849B (en) | Symmetrical non-directional eddy current detection sensor and detection method | |
| CN104569142A (en) | U-shaped detection probe based on AC magnetic field detection and detection method | |
| CN111879446B (en) | Sensor for measuring stress of non-directional alternating current electromagnetic field of ferromagnetic component | |
| CN109900784A (en) | A kind of Eddy Distribution evaluation method of the comentropy based on triangular angular spectrum | |
| CN108120764A (en) | A kind of orthogonal Eddy Current Testing Transducer | |
| CN113030241B (en) | Device and method for distinguishing magnetic flux leakage detection signals of inner wall and outer wall of steel pipe in use |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |