CN205538821U - Nondestructive detection system based on combined type U type pulsed electromagnetic sensor - Google Patents
Nondestructive detection system based on combined type U type pulsed electromagnetic sensor Download PDFInfo
- Publication number
- CN205538821U CN205538821U CN201620156414.8U CN201620156414U CN205538821U CN 205538821 U CN205538821 U CN 205538821U CN 201620156414 U CN201620156414 U CN 201620156414U CN 205538821 U CN205538821 U CN 205538821U
- Authority
- CN
- China
- Prior art keywords
- sensor
- hall
- pcb
- type
- shaped
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides a nondestructive detection system based on combined type U type pulsed electromagnetic sensor, the formula of will fixing a point test probe and difference formula test probe combine together, hall sensor symmetry on PCB is arranged, make sensor output difference formula testing result, the design has the supporting structure of gyro wheel, make the sensor can carry out dynamic verification, and frictional resistance and the magnetism appeal between sensor and the ferromagnetism test piece has been overcome, the realization is to the quantitative analysis of defect damage portion's bit position measuring and testing result. The utility model provides a conventional testing effect single with the not high problem of precision, obtained more accurate pulsed electromagnetic testing result, richened the research means of U type sensor in the pulse vortex. This system has mainly included parts such as signal generator, power amplifier, hall sensor, low pass filter, signal conditioning module, signal acquisition module and U type exciting coil test probe.
Description
Technical field
This utility model, by improving conventional sense probe, realizes the variation to defect damage detection mode in pulse electromagnetic detecting system, and this utility model relate to Non-Destructive Testing and technical field of measurement and test.
Background technology
Pulse leakage detection technique (PMFL), be a kind of novel electromagnetic nondestructive testing, effective integration Magnetic Flux Leakage Inspecting and the advantage of Pulsed eddy current testing technology, ferrimagnet can be carried out Non-Destructive Testing.For the pulse leakage Non-Destructive Testing of ferromagnetic component, the driving voltage (stream) of pulse leakage is a pulse, usually there is the square wave of certain dutycycle, it is applied to pulsed magnetic field produced by the excitation square wave on probe and test specimen is carried out local magnetized, discontinuous place in test specimen has pulse leakage field " to leak ", time dependent voltage i.e. leakage field transient signal will be induced on the detection sensor being placed on test specimen, the frequency content abundant due to pulse signal and the widest frequency spectrum, excitation field can be made to penetrate into the different depth of test specimen, induced voltage just comprises the more information of important relevant defect, such as position, the size such as degree of depth etc., have been widely used at present in the Non-Destructive Testing of ferromagnetic component.Pulse excitation can be divided into low level, rising edge of a pulse and high level three phases by level state, and in pulse, high and low level can correspond to continuous current excitation, thus produces stray field in ferromagnetic component；And rising edge of a pulse can be corresponding ac-excited, thus in ferromagnetic component, produce impulse eddy current, therefore the pulse leakage lossless detection method of ferromagnetic component is considered the feature combining Pulsed eddy current testing with Magnetic Flux Leakage Inspecting, with traditional EDDY CURRENT compared with Magnetic Flux Leakage Inspecting, enrich the defect information comprised in detection signal, in terms of the qualitative assessment of ferromagnetic component defect, embody potential advantages.As the triggering end of detecting system, detection probe version and detection mode, Detection results is played vital effect, therefore, it is necessary to design the sensor probe with enough accuracy of detection.
Utility model content
This utility model is primarily with regard to a technology of ferromagnetic component nondestructive detection system, single for Detection results and that detection by quantitative cannot be realized problem, the combined type U-shaped sensor detection probe using differential type and fixed-point type to combine is proposed, design is equipped with the PCB of 3 Hall sensor, the Hall sensor being in PCB centre position constitutes fixed-point type detecting element, detect for the position at ferromagnetic component defect damage position, it is in PCB two ends and constitutes differential type detecting element about the Hall sensor that PCB centrage is symmetrical, depth size for quantitative analysis rejected region.Under the effect of excitation coil, stronger gravitation between meeting and ferromagnetism test specimen, is produced for U-shaped sensor, design the supporting structure with roller, realize the defect of diverse location on test specimen is carried out packaged type detection, it is to avoid sensor directly contacts produced friction with test specimen.
A kind of nondestructive detection system based on combined type U-shaped pulse electromagnetic sensor, mainly includes following aspect:
(1) experiment porch of detecting system is built, upper for U-shaped probe (2) excitation coil (1) two lead-in wire is connected power amplifier, fixed-point type Hall sensor (9) output lead connects low pass filter, is connected with other modules successively.
(2) two Hall sensor (8,10) are arranged in the upper both sides of PCB (3), symmetrical about PCB centrage, form differential type detection probe.
(3) Hall sensor (9) is arranged in the centre position of PCB (3), forms fixed-point type detection probe.
(4) design suitable H type support (4) according to the size of U-shaped probe (2), in two underfooting of support, roller (5) is installed, it is achieved packaged type detection mode.
(5) in the upper defect (7) making different depth of the defective test specimen of surface, ferrimagnet Asia band (6), defects detection is carried out.
(6) regulation signal generator produces pumping signal, and signal is amplified by signal amplification circuit.
(7) oscilloscope display output signal, output data are imported computer, and process signal by capture card.
The step of described detecting system detection defect is as follows: in centre coiling excitation coil (1) of U-shaped probe (2), excitation coil (1) is drawn both threads and is connected power amplifier, PCB (3) is provided with the box-like Hall sensor of differential set (8,10) and fixed-point type Hall sensor (9), the upper draw-in groove of support (4) with roller (5) disposes U-shaped probe (2), the lower bayonet slot of support (4) is positioned on test specimen (6), and and test specimen (6) between leave gap, make sensor be moved easily；When U-shaped probe (2) detects on test specimen (6) surface, fixed point Hall sensor (9) on PCB (3) is used for the defect (7) detecting different depth position on test specimen (6), connect differential type Hall sensor (8, 10), by the defect to different depth (7) detection by quantitative can be realized with the field signal of test specimen vertical direction, sensor outputs is by amplifying, filtering, denoisings etc. process, oscillograph shows the waveform gathering signal, by the signal input computer of collection and follow-up process is carried out finally by data collecting card.
Technical characteristics of the present utility model has:
(1) detecting element Hall sensor (8-10) of the present utility model is arranged on same PCB (3), two Hall sensor (8,10) it is combined into differential type detection mode, is placed in the two ends of U-shaped probe (2) foot；Another Hall sensor (9) composition fixed-point type detection mode, is placed in the middle of the bipod of U-shaped probe (2).
(2) this utility model is in the upper installation of U-shaped probe (2) with roller (4) support (5), overcomes the frictional resistance between sensor and test specimen and polarity, it is achieved packaged type detection is analyzed.
(3) this utility model uses combined type U-shaped detection sensor, analyzes more accurate to the magnetic leakage signal of ferrimagnet.
(4) the fixed-point type Hall sensor (9) that this utility model uses may determine that rejected region, and differential type Hall sensor (8,10) can be with the depth size of quantitative analysis defect.
Accompanying drawing illustrates:
Fig. 1 is pulse leakage detecting system flow chart
Fig. 2 is pcb board structural design drawing
Detailed description of the invention:
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is further described.
Build experiment porch as shown in Figure 1, design pcb board as shown in Figure 2.At the upper coiling excitation coil (1) of U-shaped probe (2), the PCB (3) with sensor is fitted in glue the bottom of U-shaped probe (2).Regulation DC source, suitable voltage is input to signal generator, producing the adjustable pulse square wave of signal, be amplified by faint pulse signal by power amplifier, the pumping signal after amplification is input to the excitation coil (1) of U-shaped probe (2).When carrying out defects detection, U-shaped probe (2) is placed in the draw-in groove on support (4) with roller (5), support level is positioned on the test specimen (6) with different depth defect (7) of the sub-surface, fixed-point type Hall sensor (9) on PCB (3) connects low pass filter, its work surface is upper and lower ground, therefore can detect defect (7) and the magnetic leakage signal in test specimen vertical direction of different depth.When U-shaped probe (2) moves horizontally detection on test specimen, rejected region and do not have defective position to have significantly difference at the waveform of oscilloscope display；Disconnect fixed-point type Hall sensor (9), differential type Hall sensor (8 on PCB (3), 10) it is connected with low pass filter, U-shaped probe (2) is moved to the rejected region detected, defect (7) is carried out Differential Detection, can be by quantitative for the degree of depth of defect (7).Follow-up signal entering signal modulate circuit, the signal after conditioning is acquired and inputs computer by data collecting card, data is introduced being analyzed in MATLAB and processing, carries out the quantitative analysis of depth of defect size.
Above-described is only preferred implementation of the present utility model, and this utility model is not limited to above example.It is appreciated that the oher improvements and changes that those skilled in the art directly derive on the premise of without departing from basic conception of the present utility model or associate, within being all considered as being included in protection domain of the present utility model.
Claims (3)
1. a nondestructive detection system based on combined type U-shaped pulse electromagnetic sensor, it is characterised in that:
Include excitation coil (1), U-shaped probe (2), the PCB (3) with sensor, support (4), roller (5), the sub-defective test specimen of surface band (6), the defect (7) of different depth, Hall (Hall) sensor (8-10)；
It is wrapped the U-shaped probe (2) of excitation coil (1) and the PCB (3) with sensor forms the U-shaped sensor of combined type, it is placed on the support (4) with roller (5), for detecting the sub-surface test specimen (6) with different depth defect (7), Hall (Hall) sensor (8-10) is arranged in PCB (3) front, and symmetrical about PCB centrage.
A kind of nondestructive detection system based on combined type U-shaped pulse electromagnetic sensor, it is characterised in that: differential type detection structure is symmetrical about PCB centrage by two Hall (Hall) sensors；Fixed-point type detection structure is arranged at PCB position of center line by Hall (Hall) sensor, and three Hall (Hall) transducer arrangements are on same pcb board, and pcb board glue is fixed on the two ends of U-shaped sensor foot.
A kind of nondestructive detection system based on combined type U-shaped pulse electromagnetic sensor, it is characterized in that: design the support with roller according to the size of U-shaped sensor and test specimen, the upper draw-in groove of support disposes U-shaped sensor, the lower bayonet slot of support is stuck on test specimen, between leave gap, sensor moves for convenience.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156414.8U CN205538821U (en) | 2016-03-01 | 2016-03-01 | Nondestructive detection system based on combined type U type pulsed electromagnetic sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620156414.8U CN205538821U (en) | 2016-03-01 | 2016-03-01 | Nondestructive detection system based on combined type U type pulsed electromagnetic sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205538821U true CN205538821U (en) | 2016-08-31 |
Family
ID=56779493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620156414.8U Expired - Fee Related CN205538821U (en) | 2016-03-01 | 2016-03-01 | Nondestructive detection system based on combined type U type pulsed electromagnetic sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205538821U (en) |
-
2016
- 2016-03-01 CN CN201620156414.8U patent/CN205538821U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105527339B (en) | Lossless detection method based on the U-shaped pulse electromagnetic sensor of combined type | |
| CN103163216B (en) | A kind of metallic conductor defect recognition based on giant magnetoresistance sensor and method of estimation | |
| CN103499404B (en) | Ferromagnetic component alterante stress measurement mechanism and measuring method thereof | |
| CN102182933B (en) | Nondestructive detection system and method for pulsed magnetic flux leakage defects and stresses | |
| CN110057904B (en) | Method and device for quantitatively detecting defects of moving metal component | |
| US20210262983A1 (en) | Low-Frequency Electromagnetic Detection Method For Large-Scale Damage Of Ferromagnetic Materials Based On Broadband Excitation | |
| CN105067701B (en) | Pulsed eddy current testing hardware separation method based on rectangular probe | |
| CN104977352A (en) | Defect and stress non-destructive testing system and non-destructive testing method based on pulsed eddy current and Barkhausen | |
| CN104297338A (en) | Pulse eddy current detecting system based on rectangular difference probe | |
| CN103954684A (en) | Method for nondestructive testing by use of change rate of magnetic flux leakage | |
| CN106290553A (en) | A kind of electromagnetic transducer system of novel detection defect in rope | |
| CN105866239A (en) | Detection method for U-shaped pulse fusing sensor based on ferromagnetic test piece | |
| CN105548349B (en) | Realize the rectangular probe pulse eddy current detection method of Root cause analysis technology | |
| CN104049031A (en) | Subsurface defect detection device and method based on alternative current electromagnetic field | |
| CN102435668A (en) | Array ferromagnetic member surface defect detector based on leakage magnetic field double component | |
| CN202018442U (en) | Nondestructive detecting system for pulsed magnetic flux leakage defect and stress | |
| CN204255904U (en) | Based on the Pulsed Eddy Current Testing System of rectangle difference detector | |
| CN105866234B (en) | The ferromagnetic material nondestructive detecting instrument and method that current vortex and Barkhausen blend | |
| CN113203792A (en) | TMR multi-array deep defect weak magnetic detection device | |
| CN105784839A (en) | Method for detecting micro-defects on surfaces of metal container | |
| CN109212019A (en) | A kind of far-field eddy and magnetic striction wave guide hybrid sensor and its detection method | |
| CN205538821U (en) | Nondestructive detection system based on combined type U type pulsed electromagnetic sensor | |
| CN105675713B (en) | A kind of elevator traction steel band non-destructive testing device and method | |
| CN102759565B (en) | A kind of steel band in length and breadth to defects detection and identify leakage magnetic detection device and method | |
| CN107884473A (en) | A kind of multi frequency detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |