CN101576534B - Eddy current detection method using finger touch as supplementary means and device thereof - Google Patents
Eddy current detection method using finger touch as supplementary means and device thereof Download PDFInfo
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- CN101576534B CN101576534B CN2009103007694A CN200910300769A CN101576534B CN 101576534 B CN101576534 B CN 101576534B CN 2009103007694 A CN2009103007694 A CN 2009103007694A CN 200910300769 A CN200910300769 A CN 200910300769A CN 101576534 B CN101576534 B CN 101576534B
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Abstract
The invention discloses an eddy current detection method using finger touch as supplementary means and a device thereof. A coil capable of being used for realizing eddy current detection is wound in the shape of a pancake or arranged on a flexible circuit board to form a small sensor capable of flexibly bending, then the small sensor is mounted on a finger of a human body (namely an operator), andthe finger is used as the framework of the coil. As the small sensor is capable of flexibly bending, the small sensor is adapted to the surface of a metal structural member along with the flexible mo tion of the surface of the finger. Synchronously, by adopting the sensitivity of human body contact and the flexibility of the finger, the small sensor can conveniently move on the detected surface ofthe metal structural member without being influenced by all obstacles such as pit, welding beading and the like. The finger touch can be used for supplementary location and judgment so as to improve the accuracy and adaptive capacity of detection result. The method is particularly suitable for defect detection on the complex surface of the metal structural member.
Description
Technical field
The present invention relates to a kind of eddy current detection method, particularly relating to a kind of is the eddy current detection method and the device of supplementary means with the finger touch.
Background technology
Non-Destructive Testing NDT (nondestructive test) implements a kind of detection means of not damaging or not influencing its following usability or purposes to material or workpiece, by using NDT, can find the inner and surperficial existing defective of material or workpiece, the geometric properties of energy measurement workpiece and size can be measured inside composition, structure, physical property and the state etc. of material or workpiece.Dynamic Non-Destruction Measurement now has been widely used in each industrial circle, in manufacturing industry, space flight and aviation, field of petrochemical industry.
EDDY CURRENT is a kind of lossless detection method that is based upon on the electromagnetic induction principle basis, it is the surface of hot-wire coil near hardware, set up alternating magnetic field by coil, this alternating magnetic field passes through hardware, and the electromagnetic induction effect takes place with it, in hardware, set up eddy current; Eddy current in the hardware also can produce the magnetic field of oneself, and the effect of eddy current magnetism has changed the power in former magnetic field, and then causes the change of coil voltage and impedance; When defective appears in the surperficial or nearly surface of hardware, the intensity and the distribution of eddy current will be had influence on, the variation of eddy current has caused the variation of magnetic test coil voltage and impedance again, according to this variation, just can know the existing defective of hardware indirectly, wherein coil plays a part sensor.
The existing coil that is used for carrying out EDDY CURRENT will be fixed on certain carrier usually and constitute sensor; such as coil is wrapped on the coil former is exactly wherein a kind of; coil former just is equivalent to the skeleton of coil in fact; in the time will carrying out EDDY CURRENT to hardware; only need the moving coil frame that coil is moved along test surface; because this skeleton structure of coil former has been arranged; just make sensor on volume, occupy certain space; like this; just being not easy to sensor enters each detecting location and detects; such as; such problem will appear when the railway wheel shaft is detected; devices such as power transmission or braking also are housed on the railway wheel shaft usually; the detecting location that existing sensors just is difficult to reach needs detects wheel shaft; periphery at the wheel end face has the convex edge usually; the middle part of end face has projection usually; in the convex edge; the transition of R angle is then arranged between projection and the end face; therefore; detection to R angle crossover position is not easy to operate yet; particularly because stopping of other devices arranged; operator's sight line can be blocked, and the shift position of sensor is difficult to accurate judgement, and omission takes place easily.Identical problem also appears on some other component of machine, when particularly being used for detecting the metal body surface of tangible variation, such as aircraft blade, gear, connecting rod etc.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, providing a kind of is the eddy current detection method and the device of supplementary means with the finger touch, be that the coil that will be used for carrying out EDDY CURRENT is attached on the finger face of human finger, be feeler lever movably with the arm of human body, utilize the joint of human finger to adjust the adaptive surface of coil, detecting location is felt in sense of touch with human body, be to have made full use of the sensitivity of human body sense of touch and the dirigibility of finger, with the supplementary means of finger touch, thereby the accuracy and the auxiliary judgment ability of detection and location have been improved greatly as detection.
The technical solution adopted for the present invention to solve the technical problems is: a kind of is the eddy current detection method of supplementary means with the finger touch, comprising:
Can realize the coil coiled pancake shape of EDDY CURRENT or be produced on the flexible PCB that the leading-out terminal of coil is connected to eddy current testing instrument in the mode of P.e.c.;
The coil of pancake shape or the flexible PCB that is printed on coil are contained in operator's finger to be referred on the face;
Go to touch the surface of hardware with the finger of operator's coil that the pancake shape is housed or flexible PCB;
Send the pumping signal that presets by the computer system of eddy current testing instrument, this pumping signal is picked up by coil at the vortex induction signal that hardware produced, and the vortex induction signal that this picks up is defeated by eddy current testing instrument;
In the process of coil pickoff signals, know from experience the state on hardware surface with operator's sense of touch, the adjustment coil moves the hardware surface, allows the coil or the flexible PCB of the pancake shape on pointing become adaptation state with the surface of hardware;
In eddy current testing instrument, the vortex induction signal carries out vortex analysis by computer system behind amplification, phase sensitive detection handles;
The operator combines the sense of touch cognition in the testing process and carries out comprehensive analysis processing with analysis processing result that computer system draws.
The coil of described pancake shape or the flexible PCB that is printed on coil are to adopt the finger tying up the fixing mode of rope and being contained in human body to refer on the face.
The coil of described pancake shape or the flexible PCB that is printed on coil are to adopt the fixing mode of adhesive tape sticking and the finger that is contained in human body refers on the face.
The coil of described pancake shape or the flexible PCB that is printed on coil are that the finger that is contained in corresponding to human body refers in the software fingerstall of face one side, the software fingerstall is enclosed within on the finger of human body, the finger that the flexible PCB that makes the coil of pancake shape or be printed on coil is in human body refers on the face again.
A kind ofly be used for realizing with the finger touch to be the device of the eddy current detection method of supplementary means, comprise the software fingerstall that can be enclosed within on the human finger, in the software fingerstall, flexible PCB is housed, on flexible PCB, be provided with spiral printed coil, the lead-in wire of spiral printed coil is connected with adapter by lead, and adapter is connected with eddy current testing instrument by cable.
Described software fingerstall is made of cover in software overcoat and the software, between described flexible PCB is clipped in and overlaps in software overcoat and the software.
Described software fingerstall is for being enclosed within the single fingerstall structure on finger of human body adaptedly, in single fingerstall structure, one or more flexible PCBs are housed, flexible PCB is provided with the spiral printed coil of a coil structures or multi-turn structure, and the lead-in wire of spiral printed coil is connected by the outer adapter of lead and software fingerstall.
Described software fingerstall is for being enclosed within a plurality of single fingerstall structure on a plurality of fingers of human body, in each single fingerstall structure, one or more flexible PCBs are housed respectively, be respectively equipped with the spiral printed coil of a coil structures or multi-turn structure on the flexible PCB, the lead-in wire of spiral printed coil is connected by the outer adapter of lead and software fingerstall respectively.
Described software fingerstall comprises a plurality of single fingerstall structure and the whole palm cover that is connected a plurality of single fingerstall structure roots that can be enclosed within on a plurality of fingers of human body, in each single fingerstall structure, one or more flexible PCBs are housed respectively, be respectively equipped with the spiral printed coil of a coil structures or multi-turn structure on the flexible PCB, the lead-in wire of spiral printed coil is connected with adapter in being contained in palm cover by lead respectively.
This palm cover can be the half nested structure, promptly only allows a part of palm cover enter; This palm cover also can be a complete set of structure, promptly allows user's whole palm all overlap into; This palm cover can also be to be extended with the arm cover, and promptly not only palm can be inserted in fully, and also some can overlap into arm.
Also be provided with one or more stationary installations that can be used for cable is fixed on the human arm place on the described cable.
Described stationary installation is that the strap configurations or the magic are pasted band structure or pull stap structure.
Of the present invention a kind of be the eddy current detection method of supplementary means with the finger touch, be to be used for realizing the loop construction coiled pancake shape of EDDY CURRENT or being produced on the flexible PCB, but form the little sensor of flexible bending, again little sensor is contained on the finger of human body (being the operator), finger is equivalent to the skeleton of coil, but because little sensor flexible bending, therefore little sensor can refer to the gentle moving surface that fits in hardware of face with finger, simultaneously, utilize the sensitivity of human body sense of touch and the dirigibility of finger, can be easily move at the tested surface of hardware, be not subjected to various obstacles as depression, the influence of overlap etc., can utilize the sense of touch of finger to carry out auxiliary positioning and judgement, can improve the accuracy and the judgement of detection and location, this method is specially adapted to the defects detection to the complex surface of hardware.
The invention has the beneficial effects as follows, owing to adopted the coil coiled pancake shape that to realize EDDY CURRENT or be produced on the flexible PCB in the mode of P.e.c., then the coil of pancake shape or the flexible PCB that is printed on coil being contained in operator's finger refers on the face, go to touch the surface of hardware again with the finger of operator's coil that the pancake shape is housed or flexible PCB, can produce the vortex induction signal at hardware after the coil excited target, the structurally associated connection on the nearly surface of this vortex induction signal and hardware, in the process of coil pickoff signals, know from experience the state on hardware surface with operator's sense of touch, adjust coil moving on the hardware surface, allow the coil or the flexible PCB of pancake shape on the finger become adaptation state with the surface of hardware, the operator also combines the sense of touch cognition in the testing process and carries out comprehensive analysis processing with analysis processing result that computer system draws.This method is to have made full use of the sensitivity of human body sense of touch and the dirigibility of finger, finger can move at tested surface easily, not influenced by obstacle, depression, overlap etc., utilize the sense of touch of finger to carry out auxiliary positioning and judgement, can improve the accuracy and the judgement of detection and location greatly.This method can be used for the defects detection of the metal structure (as aircraft blade, gear, connecting rod etc.) of railway wheel shaft and tangible variation easily.
Below in conjunction with drawings and Examples the present invention is described in further detail; But of the present invention a kind of be that the eddy current detection method and the device of supplementary means is not limited to embodiment with the finger touch.
Description of drawings
Fig. 1 is the organigram of embodiment one device of the present invention;
Fig. 2 is the cut-open view of the software fingerstall of embodiment one device of the present invention;
Fig. 3 is the organigram of the user mode of embodiment one device of the present invention;
Fig. 4 is the organigram of embodiment two devices of the present invention.
Embodiment
Embodiment one, of the present invention a kind of be the eddy current detection method of supplementary means with the finger touch, comprising:
Can realize the coil coiled pancake shape of EDDY CURRENT or be produced on the flexible PCB that the leading-out terminal of coil is connected to eddy current testing instrument in the mode of P.e.c.;
The coil of pancake shape or the flexible PCB that is printed on coil are contained in operator's finger to be referred on the face;
Go to touch the surface of hardware with the finger of operator's coil that the pancake shape is housed or flexible PCB;
Send the pumping signal that presets by the computer system of eddy current testing instrument, this pumping signal is picked up by coil at the vortex induction signal that hardware produced, and the vortex induction signal that this picks up is defeated by eddy current testing instrument;
In the process of coil pickoff signals, know from experience the state on hardware surface with operator's sense of touch, the adjustment coil moves the hardware surface, allows the coil or the flexible PCB of the pancake shape on pointing become adaptation state with the surface of hardware;
In eddy current testing instrument, the vortex induction signal carries out vortex analysis by computer system behind amplification, phase sensitive detection handles;
The operator combines the sense of touch cognition in the testing process and carries out comprehensive analysis processing with analysis processing result that computer system draws.
Fig. 1 is used for realizing with the finger touch to be the organigram of device of the eddy current detection method of supplementary means for a kind of; Fig. 2 is the cut-open view of the software fingerstall of this device; Fig. 3 is the organigram of the user mode of this device;
This device comprises the software fingerstall 1 that can be enclosed within on the human finger, flexible PCB 2 is housed in software fingerstall 1, on flexible PCB 2, be provided with spiral printed coil 3, the lead-in wire of spiral printed coil 3 is connected with adapter 4 by lead 31, and adapter 4 is connected with the eddy current testing instrument (not shown) by cable 5; Adopt adapter 4 mainly in order to reduce the number of conductors in the cable 5.
Wherein:
Also be provided with two stationary installations 6 that can be used for cable is fixed on the human arm place on the cable 5, certainly, a stationary installation or three and above stationary installation can be set as required also; This stationary installation 6 adopts the magic to paste band structure, certainly, also can be other structures such as strap configurations or pull stap structure.
Of the present inventionly a kind ofly be used for realizing with the finger touch to be the device of the eddy current detection method of supplementary means, be to be used for realizing that the loop construction 3 of EDDY CURRENT is arranged on the flexible PCB 2, but form the little sensor of flexible bending, again these little sensors are arranged in the software fingerstall 1, utilize software fingerstall 1 to be used as the support of loop construction 3, make the flexible PCB 2 can bending with the bending on finger surface.During use, the interior software fingerstall 1 that flexible PCB is housed is enclosed within the operator on hand, 5 on the cable that is connected with eddy current testing instrument can paste on the arm that band structure 6 is fixed on the operator by the magic, by the operator needs that hand reaches hardware are detected the position then, the arc surface position that particularly has the R angle, that utilizes the dirigibility of finger and flexible PCB 2 can be flexible, allow the fingerstall surface that little sensor is housed fully contact, come hardware is carried out Non-Destructive Testing with the curved surfaces of hardware.During detection, carry out signal excitation by eddy current testing instrument, the spiral printed coil 3 of flexible PCB picks up the electromagnetic induction signal of detected position, and electromagnetic induction signal is defeated by eddy current testing instrument after by adapter 4 and cable 5 and is carried out analyzing and processing.
Of the present inventionly a kind ofly be used for realizing with the finger touch to be the device of the eddy current detection method of supplementary means, also the coil of coiled pancake shape can be replaced being printed on the flexible PCB of coil, the coil that is about to the pancake shape directly is contained in the software fingerstall.
Of the present inventionly a kind ofly be used for realizing with the finger touch to be the device of the eddy current detection method of supplementary means, can be used for the surface imperfection of railway wheel shaft is detected, also can be used for blade, component of machine are detected, because blade is generally arcwall face, therefore, adopt this device to detect various complicated faces such as cambered surface, corner, bending, steps easily.
Of the present invention a kind of be the eddy current detection method of supplementary means with the finger touch; the coil of pancake shape or the flexible PCB that is printed on coil are that the finger that is contained in corresponding to human body refers in the software fingerstall of face one side; the software fingerstall is enclosed within on the finger of human body again, and the finger that the flexible PCB that makes the coil of pancake shape or be printed on coil is in human body refers on the face.Certainly, the coil of pancake shape or the flexible PCB that is printed on coil are contained in the mode that other can also be arranged on finger, such as, can adopt and tying up the fixing mode of rope is that the coil of pancake shape or the flexible PCB that is printed on coil are to adopt the finger tying up the fixing mode of rope and being contained in human body to refer on the face; Also can adopt the fixing mode of adhesive tape sticking is that the coil of pancake shape or the flexible PCB that is printed on coil are to adopt the fixing mode of adhesive tape sticking and the finger that is contained in human body refers on the face.
Embodiment two, referring to shown in Figure 4, of the present invention a kind of be the eddy current detection method of supplementary means with the finger touch, be with the difference of embodiment one, be used for realizing to be that the device of eddy current detection method of supplementary means is inequality with the finger touch, though this device also is the glove-type structure, but the software fingerstall of this device 1 is for being enclosed within two single fingerstall structures 11 on two fingers of human body, in each single fingerstall structure 11, a flexible PCB (not shown) is housed respectively, certainly, also can be a plurality of flexible PCBs, be respectively equipped with the spiral printed coil of a coil structures or multi-turn structure on each flexible PCB, the lead-in wire of each spiral printed coil is connected by the outer adapter of lead and software fingerstall respectively.
Certainly, the software fingerstall also can be for can being enclosed within the single fingerstall structure on finger of human body, or, also can be enclosed within the single fingerstall structure on three fingers of human body or four fingers.
The foregoing description only be used for further specifying of the present invention a kind of be the eddy current detection method and the device of supplementary means with the finger touch; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection domain of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. one kind is the eddy current testing device of supplementary means with the finger touch, it is characterized in that: comprise the software fingerstall that can be enclosed within on the human finger, in the software fingerstall, flexible PCB is housed, on flexible PCB, be provided with spiral printed coil, the lead-in wire of spiral printed coil is connected with adapter by lead, and adapter is connected with eddy current testing instrument by cable;
Described software fingerstall is made of cover in software overcoat and the software, between described flexible PCB is clipped in and overlaps in software overcoat and the software; Described software fingerstall comprises four the single fingerstall structures and the whole palm cover that is connected four single fingerstall structure roots that can be enclosed within on four fingers of human body, in each single fingerstall structure, two flexible PCBs are housed respectively, be respectively equipped with the spiral printed coil of a coil structures or multi-turn structure on the flexible PCB, the lead-in wire of spiral printed coil is connected with adapter in being contained in palm cover by lead respectively.
2. a kind of device according to claim 1 is characterized in that: also be provided with one or more stationary installations that can be used for cable is fixed on the human arm place on the described cable; This stationary installation is that the strap configurations or the magic are pasted band structure or pull stap structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103007694A CN101576534B (en) | 2009-03-10 | 2009-03-10 | Eddy current detection method using finger touch as supplementary means and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103007694A CN101576534B (en) | 2009-03-10 | 2009-03-10 | Eddy current detection method using finger touch as supplementary means and device thereof |
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| CN101576534A CN101576534A (en) | 2009-11-11 |
| CN101576534B true CN101576534B (en) | 2011-12-14 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014011196A1 (en) * | 2012-07-11 | 2014-01-16 | Electric Power Research Institute, Inc. | Flexible eddy current probe |
| CN104569714B (en) * | 2014-12-05 | 2019-02-22 | 四川邮科通信技术有限公司 | A kind of clipping quick line inspection equipment of hand |
| FR3044764A1 (en) * | 2015-12-07 | 2017-06-09 | Pfeiffer Vacuum | LEAK DETECTION DEVICE AND LEAK DETECTION MODULE |
| CN113311063A (en) * | 2021-05-17 | 2021-08-27 | 北京工业大学 | Wearable electromagnetic nondestructive testing instrument |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389876A (en) * | 1991-05-06 | 1995-02-14 | General Electric Company | Flexible eddy current surface measurement array for detecting near surface flaws in a conductive part |
| US5895871A (en) * | 1997-07-25 | 1999-04-20 | General Electric Company | Finger controlled inspection apparatus |
| US6211672B1 (en) * | 1998-12-21 | 2001-04-03 | Triple Tech, Llc | Human appendage mounted metal detector |
| CN101351764A (en) * | 2006-01-04 | 2009-01-21 | 艾恩威尔创造公司 | Inputting information with finger-mounted senser |
-
2009
- 2009-03-10 CN CN2009103007694A patent/CN101576534B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389876A (en) * | 1991-05-06 | 1995-02-14 | General Electric Company | Flexible eddy current surface measurement array for detecting near surface flaws in a conductive part |
| US5895871A (en) * | 1997-07-25 | 1999-04-20 | General Electric Company | Finger controlled inspection apparatus |
| US6211672B1 (en) * | 1998-12-21 | 2001-04-03 | Triple Tech, Llc | Human appendage mounted metal detector |
| CN101351764A (en) * | 2006-01-04 | 2009-01-21 | 艾恩威尔创造公司 | Inputting information with finger-mounted senser |
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| CN101576534A (en) | 2009-11-11 |
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