CN101398407B - Scanning and positioning non-damage detection method by using artificial magnetic field as sensor - Google Patents
Scanning and positioning non-damage detection method by using artificial magnetic field as sensor Download PDFInfo
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- CN101398407B CN101398407B CN2008100716779A CN200810071677A CN101398407B CN 101398407 B CN101398407 B CN 101398407B CN 2008100716779 A CN2008100716779 A CN 2008100716779A CN 200810071677 A CN200810071677 A CN 200810071677A CN 101398407 B CN101398407 B CN 101398407B
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Abstract
The invention discloses a nondestructive testing method for using an artificial magnetic field to carry out the scanning and positioning of a sensor. The testing method comprises the following steps: a magneto sensor which can test the magnetic-field vector is added in the conventional sensor; an artificial magnetic field with set size is applied at the periphery of a component to be tested; the size of the artificial magnetic field can lead the magneto sensor which enters the artificial magnetic field to test the magnetic-field vector of the self position of the magneto sensor; the magnetic-field vector comprises the size and the direction of the vector; when the sensor which is internally provided with the magneto sensor carries out conventional nondestructive testing and scanning to the component to be tested, the process of the conventional nondestructive testing and scanning of the sensor is processed into a first scanning image; the collected magnetic-field vector which corresponds to the magneto sensor in the sensor is processed into a second scanning image which is synchronous with the first scanning image by a computer processing system; and the second scanning image displays the changing characteristics of the positioning position of the sensor so as to lead the invention to be capable of testing the position of the sensor accurately in the process of nondestructive testing, judge the defects of the component to be tested by comparison and have the advantages of convenient testing, easy realization and accurate testing results.
Description
Technical field
The present invention relates to a kind of lossless detection method, particularly relate to a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location.
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.Existing conventional lossless detection method mainly includes that radiographic inspection (RT) method, Ultrasonic Detection (UT) method, infiltration are detected (PT) method, magnetic detects (MT) method, EDDY CURRENT (ET) method etc., and unconventional lossless detection method then includes microwave detection method, current potential detection method etc.
In Non-Destructive Testing, sensor is a kind of sensitive element that is used for gathering the flaw indication of tested member, such as in the EDDY CURRENT process, exactly eddy current sensor is pressed close to tested member, eddy current sensor is subjected to the excitation of signal to produce an alternating magnetic field, this alternating magnetic field passes through tested member, and the electromagnetic induction effect takes place with it, sets up eddy current in tested member; Eddy current in the tested member also can produce the magnetic field of oneself, the effect of eddy current magnetism has changed the power in former magnetic field, when defective appears in tested component surface or nearly surface, will have influence on the intensity and the distribution of eddy current, the signal that eddy current changes is gathered by eddy current sensor, be transferred to computer system analyzing and processing in addition by signal, just can draw the defect size and the distribution of this tested member this eddy current sensor collection.For another example, in the ultrasound examination process, when the ultrasound wave that utilizes ultrasonic sensor to send is exactly propagated in detected member, the variation meeting of the acoustic characteristic of member and interior tissue produces certain influence to hyperacoustic propagation, understands material property and structural change by the detection to ultrasound wave degree of susceptibility and situation; When ultrasound wave enters tested member and runs into defective, part sound wave can produce reflection, ultrasonic sensor is gathered this reflected signal and is transferred in addition analyzing and processing of computer system, by reflection wave is analyzed, can measure material thickness, find the inherent vice hidden etc.Therefore, sensor is related to the accuracy of Non-Destructive Testing process as the sensitive element of gathering tested member flaw indication.Difficult and in some Non-Destructive Testing process, owing to can't determine the position of sensor exactly, thereby influenced accurate analysis to the sensor acquisition signal, such as in the air porcelain insulator being carried out at height in the process of labour Non-Destructive Testing, just be difficult to determine exactly the position of sensor, porcelain insulator is as the huge parts of consumption in the electrical network, its quality direct relation the safe operation of electrical network, using as a servant porcelain insulator owing to be in for a long time under the operation of operation high pressure, be subjected to the erosion of open-air atmosphere again, thereby can produce inefficacy inevitably, it is to prevent that because porcelain insulator the lost efficacy porcelain insulator brittle failure that produces or breakdown accident are also and then cause the effective means of serious economic loss that porcelain insulator is carried out detect surveying in labour.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location is provided, make in the Non-Destructive Testing process, can measure the position of sensor exactly, and by the corresponding sensor location scanning of conventional sense scan image image with sensor scan localization process one-tenth and sensor, make by can judge the defect state of tested member intuitively to the contrast of conventional sense scan image and sensor location scanning image, have easy to detect, easy realization, detect the effect characteristic of accurate.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location comprises the steps:
A. in conventional sensors, install one additional and can test the magneto sensor of magnetic vector;
B. apply one in the periphery of tested member and set big or small artificial magnetic field, the size of this artificial magnetic field is enough to allow the magneto sensor that enters wherein measure the magnetic vector of magneto sensor self position, and this magnetic vector comprises the size and Orientation of vector;
The sensor that c. will be built-in with magneto sensor is pressed close to tested member, and tested member is carried out conventional Non-Destructive Testing scanning;
D. carry out in the conventional Non-Destructive Testing scanning process at sensor, the signal conveys of the Non-Destructive Testing scanning of the routine that sensor constantly will pick up is given computer processing system, be processed into scan image corresponding to the variable condition of scanning process institute pickoff signals by computer processing system, this scan image is set at first scan image;
E. carry out in the conventional Non-Destructive Testing scanning process at sensor, magneto sensor in the sensor constantly synchronously is transferred to computer processing system with the magnetic vector of measured current location, determine the current location of sensor by computer processing system according to the size and Orientation of its vector, and be processed into corresponding current synchronized positioning data;
F. computer processing system each synchronized positioning data processing that sensor is drawn in scanning process becomes second scan image with the first scan image synchronised of the conventional Non-Destructive Testing of sensor;
G. computer processing system is handled first scan image, second scan image of synchronised in a display page further, so that the testing staff is according to the corresponding relation of image, can find pairing sensing station second scan image from a certain unique point of first scan image, or find pairing both image change characteristics first scan image from a certain sensing station of second scan image.
A kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention, be in conventional sensors, to install one additional can test the magneto sensor of magnetic vector, when tested member being carried out corresponding Non-Destructive Testing, should apply one in the periphery of tested member and set big or small artificial magnetic field, the size of this artificial magnetic field is enough to allow and enters wherein magneto sensor and can measure the magnetic vector of magneto sensor self position and get final product, this magnetic vector has comprised the size and Orientation of vector, like this, at sensor tested member is carried out in the scanning process, because the position of sensor constantly changes, the magnetic vector of sensor position also constantly changes, magneto sensor in the sensor is gathered the magnetic vector of current location, calculated and handled by computer processing system, can be realized location to the processing of the size and Orientation of vector current sensing station by computer processing system.Further, the Non-Destructive Testing scanning process of sensor routine can be processed into first scan image, convert the magnetic vector of magneto sensor collection to the corresponding sensor current location, and be processed into second scan image with the first scan image synchronised, again first scan image and second scan image are presented at same interface at last, two width of cloth figure are in juxtaposition, corresponding relation according to two width of cloth figure, can find pairing sensing station second scan image from a certain unique point of first scan image, also can find pairing characteristics of image first scan image from a certain sensing station of second scan image, make the corresponding relation of testing staff, judge the defect situation of tested member easily according to image.
A kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention goes in the multiple Non-Destructive Testing mode.
The invention has the beneficial effects as follows, owing to adopted and in conventional sensors, installed one additional and can test the magneto sensor of magnetic vector, apply one in the periphery of tested member and set big or small artificial magnetic field, the size of this artificial magnetic field is enough to allow the magneto sensor that enters wherein measure the magnetic vector of magneto sensor self position, and this magnetic vector comprises the size and Orientation of vector; When adopting this sensor that is built-in with magneto sensor that tested member is carried out conventional Non-Destructive Testing scanning, on the one hand, the Non-Destructive Testing scanning process of sensor routine is processed into first scan image, on the other hand, the magnetic vector of the corresponding collection of magneto sensor institute in the sensor is processed into second scan image with the first scan image synchronised by computer processing system, this second scan image has manifested the variation characteristic of sensor position location, make in the Non-Destructive Testing process, can measure the position of sensor exactly, and by can judge the defect state of tested member intuitively to the contrast of first scan image and second scan image, have easy to detect, easily realize, detect effect advantage accurately.
Below in conjunction with drawings and Examples the present invention is described in further detail; But a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention is not limited to embodiment.
Description of drawings
Fig. 1 is a detection principle schematic of the present invention.
Embodiment
Shown in accompanying drawing, a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention, so that be used in Ultrasonic Detection (UT) method is that example describes, this method is to utilize ultrasonic sensor that tested member (such as porcelain insulator) is carried out Non-Destructive Testing, and this testing process comprises the steps:
Step a. installs one additional in conventional sensors is ultrasonic sensor 1 can test the magneto sensor 11 of magnetic vector;
Step b. is that the periphery of porcelain insulator 2 applies an artificial magnetic field 3 of setting size at tested member, the size of this artificial magnetic field 3 is enough to allow and enters the magnetic vector that wherein magneto sensor 11 is measured magneto sensor 11 self position, and this magnetic vector comprises the size and Orientation of vector;
Step c will be built-in with the ultrasonic sensor 1 of magneto sensor 11 and press close to porcelain insulator 2, and porcelain insulator 2 is carried out conventional Non-Destructive Testing scanning;
Steps d. carry out in the conventional Non-Destructive Testing scanning process at ultrasonic sensor 1, the signal conveys of the Non-Destructive Testing scanning of the routine that ultrasonic sensor 1 constantly will pick up is given computer processing system, be processed into scan image corresponding to the variable condition of scanning process institute pickoff signals by computer processing system, this scan image is set at first scan image (being equivalent to A sweep for Ultrasonic Detection); This scanning process is actually the ultrasound wave that utilizes ultrasonic sensor 1 to send when propagating in porcelain insulator 2, the variation meeting of the acoustic characteristic of porcelain insulator 2 and interior tissue produces certain influence to hyperacoustic propagation, understands material property and structural change by the detection to ultrasound wave degree of susceptibility and situation; When ultrasound wave enters porcelain insulator 2 and runs into defective, part sound wave can produce reflection, ultrasonic sensor 1 is gathered this reflected signal and is transferred in addition analyzing and processing of computer system, by reflection wave is analyzed, can measure material thickness, find the inherent vice hidden etc.;
Step e. carries out in the conventional Non-Destructive Testing scanning process at ultrasonic sensor 1, magneto sensor 11 in the ultrasonic sensor 1 constantly synchronously is transferred to computer processing system with the magnetic vector of measured current location, determine the current location of sensor by computer processing system according to the size and Orientation of its vector, and be processed into corresponding current synchronized positioning data;
Step f. computer processing system is drawn ultrasonic sensor 1 in scanning process each synchronized positioning data processing becomes second scan image (promptly being equivalent to B scanning) with the first scan image synchronised of ultrasonic sensor 1 conventional Non-Destructive Testing;
Step g. computer processing system is handled first scan image (being A sweep), second scan image (being B scanning) of synchronised in a display page further, so that the testing staff is according to the corresponding relation of image, can find pairing sensing station the B scan image from a certain unique point of A sweep image, or find pairing both image change characteristics the A sweep image from a certain sensing station of B scan image.
A kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention, be to install one in conventional sensors additional in such as ultrasonic sensor 1 can test the magneto sensor 11 of magnetic vector, when tested member such as porcelain insulator 2 are carried out corresponding Non-Destructive Testing, should apply one in the periphery of porcelain insulator 2 and set big or small artificial magnetic field 3, the size of this artificial magnetic field 3 is enough to allow and enters wherein magneto sensor 11 and can measure the magnetic vector of magneto sensor 11 self position and get final product, this magnetic vector has comprised the size and Orientation of vector, like this, carry out in the scanning process at 1 pair of porcelain insulator of ultrasonic sensor 2, because the position of ultrasonic sensor 1 constantly changes, the magnetic vector of ultrasonic sensor 1 position also constantly changes, magneto sensor 11 in the ultrasonic sensor 1 is gathered the magnetic vector of current location, calculated and handled by computer processing system, can be realized location to the processing of the size and Orientation of vector current ultrasonic sensor 1 position by computer processing system.Further, the Non-Destructive Testing scanning process of ultrasonic sensor 1 routine can be processed into first scan image (being A sweep), the magnetic vector that magneto sensor 11 is gathered converts corresponding ultrasonic sensor 1 current location to, and be processed into and second scan image of the first scan image synchronised (being B scanning), again A sweep image and B scan image are presented at same interface at last, two width of cloth figure are in juxtaposition, corresponding relation according to two width of cloth figure, can find pairing sensing station the B scan image from a certain unique point of A sweep image, also can find pairing characteristics of image the A sweep image from a certain sensing station of B scan image, make the corresponding relation of testing staff, judge the defect situation of tested member easily according to image.
A kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the embodiment of the invention, be to be applied to supersonic detection method, for other lossless detection method, such as also being suitable in the eddy current detection method, only need in the EDDY CURRENT sensor, to install one additional and can test the magneto sensor of magnetic vector, when then tested member being detected scanning, apply one in the periphery of tested member and set big or small artificial magnetic field, by measuring the size and Orientation that magnetic vector promptly comprises vector, just can realize the prelocalization of working as of EDDY CURRENT sensor.
The foregoing description only is used for further specifying a kind of lossless detection method that utilizes artificial magnetic field to do the sensor scan location of the present invention; 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 (1)
1. a lossless detection method that utilizes artificial magnetic field to do the sensor scan location is characterized in that: comprise the steps:
A. in conventional sensors, install one additional and can test the magneto sensor of magnetic vector;
B. apply one in the periphery of tested member and set big or small artificial magnetic field, the size of this artificial magnetic field is enough to allow the magneto sensor that enters wherein measure the magnetic vector of magneto sensor self position, and this magnetic vector comprises the size and Orientation of vector;
The sensor that c. will be built-in with magneto sensor is pressed close to tested member, and tested member is carried out conventional Non-Destructive Testing scanning;
D. carry out in the conventional Non-Destructive Testing scanning process at sensor, the signal conveys of the Non-Destructive Testing scanning of the routine that sensor constantly will pick up is given computer processing system, be processed into scan image corresponding to the variable condition of scanning process institute pickoff signals by computer processing system, this scan image is set at first scan image;
E. carry out in the conventional Non-Destructive Testing scanning process at sensor, magneto sensor in the sensor constantly synchronously is transferred to computer processing system with the magnetic vector of measured current location, determine the current location of sensor by computer processing system according to the size and Orientation of its vector, and be processed into corresponding current synchronized positioning data;
F. computer processing system each synchronized positioning data processing that sensor is drawn in scanning process becomes second scan image with the first scan image synchronised of the conventional Non-Destructive Testing of sensor;
G. computer processing system is handled first scan image, second scan image of synchronised in a display page further, so that the testing staff is according to the corresponding relation of image, can find pairing sensing station second scan image from a certain unique point of first scan image, or find pairing both image change characteristics first scan image from a certain sensing station of second scan image.
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| CN2008100716779A CN101398407B (en) | 2008-08-27 | 2008-08-27 | Scanning and positioning non-damage detection method by using artificial magnetic field as sensor |
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Citations (5)
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| US4530243A (en) * | 1982-11-04 | 1985-07-23 | Akademiet For De Tekniske Videnskaber, Svejsecentralen | Method for determining the position of a measuring sensor or a probe |
| US5558091A (en) * | 1993-10-06 | 1996-09-24 | Biosense, Inc. | Magnetic determination of position and orientation |
| EP0926463A1 (en) * | 1997-12-10 | 1999-06-30 | Metalscan | Apparatus for determining the position of an assembly of measuring probes |
| CN1370989A (en) * | 2001-02-27 | 2002-09-25 | 上海大学 | Supersonic detector for petroleum conveying pipeline |
| CN101101277A (en) * | 2007-08-10 | 2008-01-09 | 华南理工大学 | High-resolution welding seam supersonic image-forming damage-free detection method and detection system |
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2008
- 2008-08-27 CN CN2008100716779A patent/CN101398407B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4530243A (en) * | 1982-11-04 | 1985-07-23 | Akademiet For De Tekniske Videnskaber, Svejsecentralen | Method for determining the position of a measuring sensor or a probe |
| US5558091A (en) * | 1993-10-06 | 1996-09-24 | Biosense, Inc. | Magnetic determination of position and orientation |
| EP0926463A1 (en) * | 1997-12-10 | 1999-06-30 | Metalscan | Apparatus for determining the position of an assembly of measuring probes |
| CN1370989A (en) * | 2001-02-27 | 2002-09-25 | 上海大学 | Supersonic detector for petroleum conveying pipeline |
| CN101101277A (en) * | 2007-08-10 | 2008-01-09 | 华南理工大学 | High-resolution welding seam supersonic image-forming damage-free detection method and detection system |
Non-Patent Citations (1)
| Title |
|---|
| 南亲江.定向扫描成像测井技术在利国铁矿的应用.《金属矿山》.2008,(第4期),第113-116页. * |
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