CN109557170A - SQUID-based wing detection system and detection method thereof - Google Patents
SQUID-based wing detection system and detection method thereof Download PDFInfo
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- CN109557170A CN109557170A CN201811468276.7A CN201811468276A CN109557170A CN 109557170 A CN109557170 A CN 109557170A CN 201811468276 A CN201811468276 A CN 201811468276A CN 109557170 A CN109557170 A CN 109557170A
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- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 241000238366 Cephalopoda Species 0.000 title claims abstract 21
- 230000004907 flux Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 9
- 230000035945 sensitivity Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
Abstract
The invention discloses a wing detection system based on SQUID and a detection method thereof, and the wing detection system comprises a data acquisition module provided with the SQUID, a nonmagnetic Dewar container, an upper computer and a system bracket, wherein the upper computer is electrically connected with the data acquisition module, the data acquisition module is arranged in the nonmagnetic Dewar container which can enable the SQUID to keep a superconducting state, the nonmagnetic Dewar container is fixedly arranged on the system bracket, and when the wing is detected, the data acquisition module acquires the change of magnetic signals of the wing which freely moves on the system bracket through the SQUID and converts the magnetic signals into electric signals to be transmitted to the upper computer for calculation processing. The wing detection system and the detection method thereof can realize the comprehensive scanning of the pit damage wing generated by the impact, and display the parameters of the position, the depth, the diameter and the like of each pit on the display instrument in real time.
Description
Technical field
The present invention relates to magnetic resonance prospecting instrument technical field more particularly to a kind of wing detection systems based on SQUID
System and its detection method.
Background technique
At present in aircraft maintenance work at home, led to the feelings for pit occur by external force such as hails when encountering wing
Condition, when repairing, engineering engineer is usually to lean on visually to check, is then marked, measures and is recorded with hand again, and sentenced
Whether the pit that breaks needs repairing.Such course of work not only needs to expend more manpower, but also measurement accuracy is by artificial
Factor is affected.
Chinese patent CN201510756405.2 discloses a kind of detecting and mark automatically for wing pit in aircraft maintenance
System, including at least one scanner, walker driving device, scanner walker, workbench support, control panel,
Console, control device, multiple workbench movable pulleys, wing place workbench, two groups of teeth wheel rack gear and mark
Remember mechanical arm；Wherein, the wing places the middle part that workbench is horizontally set on workbench support；Workbench support
The each corner in lower end one workbench movable pulley is installed respectively；Rack and pinion drive mechanism is made of gear and rack gear, and two
Group rack and pinion drive mechanism is symmetrical arranged, and middle rack is horizontally arranged at a lateral roof of workbench support；Scanner row
The both ends for walking frame are pivotally installed by one gear that can be meshed with corresponding rack gear respectively；Walker driving
The output power mechanism of device is connected with a gear, for driving scanner walker to move by gear along rack gear；It sweeps
Instrument is retouched to be mounted on the middle part bottom surface of scanner walker；The upper end of label mechanical arm is fixed on the middle part of scanner walker,
Lower end is equipped with labelling apparatus；Console is mounted on the outside of workbench support, and control panel and control device setting are being controlled
On platform processed, and the controller of control device and scanner, walker driving device, control panel and label mechanical arm is electrically connected
It connects.The present invention can be realized the data for being scanned comprehensively to wing, and obtaining wing Notch damage depth and area；It is described
Control device can be handled scanner the data obtained, by calculating the whole positions for judging to need repairing in scanning area,
And computer mark is carried out, and it is final using marking mechanical arm by result queue on wing, to provide weight for engineering engineer
The foundation wanted.
Chinese patent CN201720035001.9 discloses a kind of aircraft wing and detects labelling apparatus automatically, comprising: scanning
Instrument, several pins, the first fluid pressure drive device, the second fluid pressure drive device, third fluid pressure drive device, is stretched scanner support
Contracting bar, rotating arm, turntable, ground moving vehicle, lifting platform, rotating electric machine, operating control device and synchronous scanning are as the result is shown
Instrument；
Wherein, lifting platform includes supporting table and the truss for capableing of folding liftable, and supporting table is horizontally fixed on the upper end of truss；
The lower end of truss is fixed on the surface of ground moving vehicle；Lifting platform is equipped with the second fluid pressure drive device, the second hydraulic-driven dress
The cylinder body lower end set is fixed on the surface of ground moving vehicle, and push rod upper end is fixed on the bottom surface of supporting table；
Rotating electric machine is fixed in supporting table, and turntable is horizontally set on above rotating electric machine and the output with rotating electric machine
Axis is connected；
Telescopic rod includes fixed link and the mobile bar that is nested in inside fixed link；
Lower one end of rotating arm is hingedly fixed on turntable by pin, and the upper other end passes through pin and two telescopic rods
The end of upper fixed link is hinged；Turntable is equipped with the first vertical fluid pressure drive device, the cylinder body of the first fluid pressure drive device
Lower end is fixed on the surface of turntable, and push rod upper end is fixed on rotating arm；
The outer end of mobile bar is hinged by one end of pin and scanner support on two telescopic rods, and scanner, which is fixed on, to be swept
Retouch the free terminal of instrument bracket；The cylinder body outer end of third fluid pressure drive device is fixed on the upper end of rotating arm, push rod outer end with sweep
The one end for retouching instrument bracket is hinged；
Instrument is electrically connected operating control device as the result is shown with rotating electric machine, scanner and synchronous scanning, and with it is first hydraulic
The controller of driving device, the second fluid pressure drive device and third fluid pressure drive device is electrically connected.
However, in the prior art, using scanner to wing due to by external force caused by pit situation detect, examine
Surveying precision has to be hoisted, just needs a kind of not damaged, highly sensitive and rapidly and efficiently wing detection system in this case.
Summary of the invention
The object of the present invention is to provide a kind of not damaged, highly sensitive and rapidly and efficiently wing detection systems, can be to damage
Hurt wing to be scanned comprehensively, and position, depth, diameter of each pit of real-time display etc. are detailed on host computer display interface
Parameter.
In order to solve the above technical problems, the present invention provides a kind of wing detection system based on SQUID, comprising:
Data acquisition module, including SQUID and reading circuit, the SQUID are used to acquire the magnetic signal of the wing, institute
Reading circuit is stated for converting electric signal for the SQUID magnetic signal acquired, the SQUID is electrically connected with the reading circuit
It connects；
Host computer, for receiving and handling the electric signal of the data acquisition module transmission, the host computer and the reading
Circuit is electrically connected out；
Non-magnetic dewar container, interior to be equipped with the liquid helium that the SQUID be made to keep superconducting state, the data acquisition module is set
In in the Non-magnetic dewar container, the host computer is located at the outside of the Non-magnetic dewar container；
System frame, including the fixation device for fixing the Non-magnetic dewar container and for placing putting for the wing
Horizontalization platform, the placement platform is equipped with for controlling the mobile actuator of the wing, when the actuator controls the machine
For the wing when the placement platform is mobile, the data acquisition module can carry out data acquisition to the wing.
Preferably, the data acquisition module is placed in the surface of the placement platform.
Preferably, each corner in system frame lower end installs one for controlling the system frame movement respectively
Bracket movable pulley.
Preferably, the bracket movable pulley is the universal wheel with locking device.
Preferably, NI capture card is additionally provided between the data acquisition module and the host computer, the NI capture card will
The electric signal transmission of the reading circuit gives the host computer.
Preferably, the data acquisition module further includes feedback resistance and bucking coil, and the bucking coil passes through described
Feedback resistance is electrically connected with the reading circuit, and the bucking coil passes through described in the compensation data that the feedback resistance is fed back
SQUID magnetic flux.
Preferably, the actuator is conveyer belt.
A kind of wing detection method based on SQUID, the detection method at least include the following steps:
Step 1: will test parameter and input in the host computer；
Step 2: the wing being placed on the placement platform, and the wing is controlled described by the actuator
It is moved on placement platform；
Step 3: the SQUID acquires the mobile wing magnetic signal of the step 2, and magnetic signal collected is passed
It is defeated by the reading circuit；
Step 4: the reading circuit converts electric signal for the received magnetic signal of institute and is transferred to the host computer；
Step 5: being observed by the host computer and the received electric signal of the institute of processing in real time, the host computer generate the machine
The examining report of the wing.
Preferably, the detection parameters in the step 1 include judge magnetic signal whether Yi Chang magnetic anomaly threshold value and acquisition
Number of repetition.
As described above, the wing detection system and its detection method of the invention based on SQUID, has technology below effect
Fruit:
(1) SQUID application belongs to novel high, precision and frontier technology, and the magnetic of damage wing is detected by using the SQUID
Signal intensity accurately can efficiently find wing abnormal conditions；
(2) it is coated outside SQUID magnetic flux transducer using low temperature Non-magnetic dewar container, greatly improves the electricity of detection system
Magnetic disturbance screening ability enhances the detection sensitivity and accuracy of system；
(3) data acquisition module uses feedback resistance and bucking coil in the present invention, so that SQUID is constantly in best work
Make state, further improves the sensitivity of detection system；
(4) wing detection method of the invention has the characteristics that simple process, rapidly and efficiently high with detection sensitivity.
Detailed description of the invention
Fig. 1 is that the present invention is based on the wing detection system structures of SQUID；
Fig. 2 is that the present invention is based on data acquisition module structural schematic diagrams in the wing detection system of SQUID；
Fig. 3 is that the present invention is based on the wing detection method flow charts of SQUID；
Fig. 4 is the detection spectrogram of the wing detection system based on SQUID when wing is not damaged in the present invention；
Fig. 5 is the detection spectrogram of the wing detection system based on SQUID when wing is had damage in the present invention；
In figure: 1. Non-magnetic dewar containers；2. data acquisition module；21.SQUID；22. reading circuit；23. feedback resistance；
24. bucking coil；3. wing；4. system frame；41. fixed device；42. placement platform；5. actuator；6. host computer；7.
Frame movable pulley；8.NI capture card.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to the accompanying drawing to the present invention
It is described in further detail.
As shown in Figure 1, a kind of wing detection system based on SQUID, comprising:
Data acquisition module 2, including SQUID21 and reading circuit 22, the SQUID21 is for acquiring the wing 3
Magnetic signal, the reading circuit 22 are used to convert electric signal for the SQUID21 magnetic signal acquired, the SQUID21 with
The reading circuit 22 is electrically connected；
Host computer 6, the electric signal transmitted for receiving and handling the data acquisition module 2, the host computer 6 with it is described
Reading circuit 22 is electrically connected；
Non-magnetic dewar container 1, built with the liquid helium that the SQUID21 can be made to keep superconducting state, the data acquisition module
Block 2 is set in the Non-magnetic dewar container 1, and the host computer 6 is located at the outside of the Non-magnetic dewar container 1；
System frame 4, including the fixation device 41 for fixing the Non-magnetic dewar container 1 and for placing the wing
3 placement platform 42, the placement platform 42 are equipped with for controlling the mobile actuator 5 of the wing 3, when the actuator
When the placement platform 42 is mobile, the data acquisition module 2 can carry out data to the wing 3 and adopt the 5 control wings 3
Collection.
In the present embodiment, the actuator 5 controls the wing 3 and moves on the placement platform 42, is placed in equipped with liquid
The SQUID21 in the Non-magnetic dewar container 1 of helium acquires the magnetic signal of the wing 3, passes through the reading circuit 22
Magnetic signal collected is amplified and is converted into electric signal transmission to the host computer 6, the host computer 6 receives and processes the electricity
Signal, ultimately produces the examining report of the wing 3, and in the present embodiment, 1 one side of Non-magnetic dewar container makes described
SQUID is maintained at superconducting state, on the other hand also improves the EMI shielding capability of detection system, passes by using SQUID
Sensor detects the magnetic signal variation of the wing 3, precisely can efficiently find wing abnormal conditions.The present invention has lossless
Wound, it is highly sensitive and rapidly and efficiently the characteristics of.
As shown in Figure 1, the data acquisition module 2 is placed in the surface of the placement platform 42.It is described in the present embodiment
Data acquisition module 2 is placed in the surface of the placement platform 42, therefore the SQUID21 in the data acquisition module 2
Detection is scanned to it in the surface of the wing 3, high sensitivity that is easy to operate, compact-sized, and detecting.
As shown in Figure 1, each corner in 4 lower end of system frame installs one for controlling the system frame 4 respectively
Mobile bracket movable pulley 7.In the present embodiment, the shifting of the system frame 4 is controlled by controlling the bracket movable pulley 7
It is dynamic, therefore it is only necessary to the movement system frames 4, and the wing 3 can be placed on the placement platform 42, save
Manpower and material resources improve detection efficiency.
As shown in Figure 1, the bracket movable pulley 7 is the universal wheel with locking device.In the present embodiment, the bracket is moved
Driving wheel 7 is set as the universal wheel with locking device, it is possible thereby to realize moving freely for 4 horizontal position of system frame, and
And realize the fixation of any position, further improve the working efficiency of detection system.
As shown in Figure 1, being additionally provided with NI capture card 8 between the data acquisition module 2 and the host computer 6, the NI is adopted
Truck 8 gives the electric signal transmission of the reading circuit 22 to the host computer 6, further promotes the efficiency of data transmission.
As shown in Fig. 2, the data acquisition module 2 further includes feedback resistance 23 and bucking coil 24, the bucking coil
24 are electrically connected by the feedback resistance 23 with the SQUID21, and the bucking coil 24 is anti-by 23 institute of feedback resistance
SQUID21 magnetic flux described in the compensation data of feedback.In the present embodiment, the SQUID21 by the reading circuit 22 with it is described
Feedback resistance 23 is electrically connected, and the SQUID21 provides offset signal by the DC bias supplies in the reading circuit 22, works as institute
The magnetic signal for stating SQUID21 acquisition is converted into electric signal simultaneously after the amplifier in the reading circuit 22 tentatively amplify
A voltage value is exported, at this point, the feedback loop that the feedback resistance 23 is constituted passes through the voltage of the reading circuit 21 output
Value influences the bucking coil 24, in order to make the SQUID be in best operating point, guarantees the high sensitivity of detection system,
The data that the bucking coil 24 is fed back according to the feedback resistance 23 give the magnetic of the SQUID21 compensation respective numbers
Flux.
As shown in Figure 1, the actuator 5 is conveyer belt.In the present embodiment, drive the wing 3 free-moving described
Actuator 5 is conveyer belt, and in other embodiments, being also possible to transporting chain plate or other can be such that the wing 3 puts described
Free-moving driving structure on horizontalization platform 42.
As shown in figure 3, a kind of wing detection method based on SQUID, including the described in any item bases of claim 1~7
In the wing detection system of SQUID, the detection method is at least included the following steps:
Step 1: will test parameter and input in the host computer 6；
Step 2: the wing 3 being placed on the placement platform 42, and the wing 3 is controlled by the actuator 5
In the placement platform 4) on move；
Step 3: the SQUID21 acquires the magnetic signal of the mobile wing 3 of the step 2, and by the magnetic signal
It is transferred to the reading circuit 22；
Step 4: the reading circuit 22 converts electric signal for the received magnetic signal of institute and is transferred to the host computer 6；
Step 5: being observed by the host computer 6 and the received electric signal of processing, the host computer 6 generate described in real time
The examining report of wing 3.
In the present embodiment, when the wing 3 needs to detect, is inputted examine in the host computer 6 by engineering engineer first
Parameter is surveyed, in order to guarantee the detection efficiency and accuracy of detection system, the magnetic anomaly threshold value of X, Y, Z axis is set as
0.015V, acquisition number of repetition are set as 2 times, then the wing 3 are placed on the placement platform 42, and pass through the driving
Part 5 controls the wing 3, and steadily movement, the SQUID21 start to be acquired the magnetic signal of the wing 3 and pass through amplification
Device amplification, the reading circuit 22 convert electric signal transmission to described upper for the magnetic signal of SQUID21 acquisition amplification
Machine 6, the host computer 6 is observed the received electric signal of institute according to set parameter and handles in real time, such as Fig. 4, Fig. 5 institute
Show, when in X, Y, Z axis magnetic signal changing value≤0.015V when, detection system judges that the magnetic signal is normal, at this time detection system
It unites without any processing；As at least one magnetic signal changing value > 0.015V in X, Y, Z axis, detection system then judges at this time
The magnetic signal is abnormal, and the host computer 6 corresponds to the parameters such as position, depth and diameter on the wing 3 for the magnetic signal is calculated
And be marked, until the SQUID21 completes the acquisition to whole 3 magnetic signal of wing, then the SQUID21 is again
Magnetic signal acquisition is carried out to the whole wing 3, ultimately produces the examining report of the wing 3, for engineering engineer progress
Maintenance.In other embodiments, the acquisition number of repetition can be 3 times or 3 times or more, and the magnetic anomaly threshold value can be
Other numerical value of 0.015V.
As shown, the detection parameters in the step 1 include judging whether magnetic signal Yi Chang magnetic anomaly threshold value and is adopted
Collect number of repetition.In the present embodiment, the detection parameters include magnetic anomaly threshold value and acquisition number of repetition, are on the one hand supplied to inspection
Examining system judges the whether abnormal a reference value of the magnetic signal of the wing 3, on the other hand can be by increasing the SQUID21
Acquisition number of repetition the reliability of detection system can be improved.
It should be noted that heretofore described SQUID refers to superconducting quantum interference device (SQUID), it is a kind of measurement magnetic flux quantitative change
The magnetic flux transducer of change.
A kind of wing detection system based on SQUID provided by the present invention is described in detail above.Herein
Apply that a specific example illustrates the principle and implementation of the invention, the explanation of above example is only intended to help
Understand core of the invention thought.It should be pointed out that for those skilled in the art, not departing from the present invention
, can be with several improvements and modifications are made to the present invention under the premise of principle, these improvement and modification also fall into right of the present invention
It is required that protection scope in.
Claims (9)
1. a kind of wing detection system based on SQUID characterized by comprising
Data acquisition module (2), including SQUID (21) and reading circuit (22), the SQUID (21) is for acquiring the wing
(3) magnetic signal, the reading circuit (22) is used to convert electric signal for the magnetic signal that the SQUID (21) acquire, described
SQUID (21) is electrically connected with the reading circuit (22)；
Host computer (6), for receiving and handling the electric signal of the data acquisition module (2) transmission, the host computer (6) and institute
State reading circuit (22) electrical connection；
Non-magnetic dewar container (1), it is interior to be equipped with the liquid helium that the SQUID (21) be made to keep superconducting state, the data acquisition module
Block (2) is set in the Non-magnetic dewar container (1), and the host computer (6) is located at the outside of the Non-magnetic dewar container (1)；
System frame (4), including for fixing the fixation device (41) of the Non-magnetic dewar container (1) and for placing the machine
The placement platform (42) of the wing (3), the placement platform (42) are equipped with for controlling the wing (3) mobile actuator (5),
When the actuator (5) control the wing (3) when the placement platform (42) are mobile, the data acquisition module (2) can
Data acquisition is carried out to the wing (3).
2. the wing detection system based on SQUID as described in claim 1, which is characterized in that the data acquisition module (2)
It is placed in the surface of the placement platform (42).
3. the wing detection system based on SQUID as claimed in claim 2, which is characterized in that system frame (4) lower end
One is installed respectively for controlling the system frame (4) mobile bracket movable pulley (7) in each corner.
4. the wing detection system based on SQUID as claimed in claim 3, which is characterized in that the bracket movable pulley (7) is
Universal wheel with locking device.
5. the wing detection system based on SQUID as claimed in claim 4, which is characterized in that the data acquisition module (2)
It is additionally provided between the host computer (6) NI capture card (8), the NI capture card (8) is by the telecommunications of the reading circuit (22)
Number it is transferred to the host computer (6).
6. the wing detection system based on SQUID as claimed in claim 5, which is characterized in that the data acquisition module (2)
It further include feedback resistance (23) and bucking coil (24), the bucking coil (24) passes through the feedback resistance (23) and the reading
Circuit (22) is electrically connected out, and the bucking coil (24) passes through described in the compensation data that the feedback resistance (23) are fed back
SQUID (21) magnetic flux.
7. the wing detection system based on SQUID as described in claim 1, which is characterized in that the actuator (5) is transmission
Band.
8. a kind of wing detection method based on SQUID, which is characterized in that the detection method at least includes the following steps:
Step 1: will test parameter and input in the host computer (6)；
Step 2: the wing (3) being placed on the placement platform (42), and controls the wing by the actuator (5)
(3) it is moved on the placement platform (42)；
Step 3: the SQUID (21) acquires the mobile wing (3) magnetic signal of the step 2, and the magnetic signal is passed
It is defeated by the reading circuit (22)；
Step 4: the reading circuit (22) converts electric signal for the received magnetic signal of institute and is transferred to the host computer (6)；
Step 5: being observed by the host computer (6) and the received electric signal of the institute of processing in real time, described in host computer (6) generation
The examining report of wing (3).
9. the wing detection method based on SQUID as claimed in claim 8, which is characterized in that the detection ginseng in the step 1
Number include judge magnetic signal whether Yi Chang magnetic anomaly threshold value with acquire number of repetition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468276.7A CN109557170A (en) | 2018-12-03 | 2018-12-03 | SQUID-based wing detection system and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468276.7A CN109557170A (en) | 2018-12-03 | 2018-12-03 | SQUID-based wing detection system and detection method thereof |
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| CN109557170A true CN109557170A (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811468276.7A Pending CN109557170A (en) | 2018-12-03 | 2018-12-03 | SQUID-based wing detection system and detection method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982158A (en) * | 1988-06-23 | 1991-01-01 | Electric Power Research Institute, Inc. | Method and apparatus for magnetic detection of flaws |
| CN104330754A (en) * | 2014-09-29 | 2015-02-04 | 北京美尔斯通科技发展股份有限公司 | Superconducting weak magnetic signal detection magnetometer |
| CN105346730A (en) * | 2015-11-06 | 2016-02-24 | 中国民航大学 | Automatic detecting and marking system of wing pit during airplane maintaining |
| CN206407167U (en) * | 2017-01-12 | 2017-08-15 | 中国民航大学 | A kind of aircraft wing automatic detection labelling apparatus |
-
2018
- 2018-12-03 CN CN201811468276.7A patent/CN109557170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4982158A (en) * | 1988-06-23 | 1991-01-01 | Electric Power Research Institute, Inc. | Method and apparatus for magnetic detection of flaws |
| CN104330754A (en) * | 2014-09-29 | 2015-02-04 | 北京美尔斯通科技发展股份有限公司 | Superconducting weak magnetic signal detection magnetometer |
| CN105346730A (en) * | 2015-11-06 | 2016-02-24 | 中国民航大学 | Automatic detecting and marking system of wing pit during airplane maintaining |
| CN206407167U (en) * | 2017-01-12 | 2017-08-15 | 中国民航大学 | A kind of aircraft wing automatic detection labelling apparatus |
Non-Patent Citations (2)
| Title |
|---|
| K.ALLWEINS等: "Defect detection in thick aircraft samples based on HTS SQUID-magnetometry and pattern recognition", 《IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY》 * |
| 白世武等: "直流超导量子干涉器的无损检测研究", 《无损检测》 * |
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Application publication date: 20190402 |
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