CN206945607U - System occurs for a kind of electromagnetic nondestructive magnetic field excitation - Google Patents
System occurs for a kind of electromagnetic nondestructive magnetic field excitation Download PDFInfo
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- CN206945607U CN206945607U CN201720677828.XU CN201720677828U CN206945607U CN 206945607 U CN206945607 U CN 206945607U CN 201720677828 U CN201720677828 U CN 201720677828U CN 206945607 U CN206945607 U CN 206945607U
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Abstract
System occurs for a kind of electromagnetic nondestructive magnetic field excitation, belongs to ferrimagnet electromagnetic nondestructive field.Including being tested ferrimagnet（3）, it is characterised in that：The input that module occurs with pumping signal for the output end of microprocessor is connected, the output end that module occurs for pumping signal is connected with the input of power amplifier module, the output end of power amplifier module is connected with magnetizing the input of probe module, the output end of magnetization probe module is connected with the input of sampling resistor module, and the output end of sampling resistor module is connected with the input of microprocessor.Magnetize probe module and tested ferrimagnet（3）It is brought into close contact.System is occurred by the magnetic field excitation of this electromagnetic nondestructive, tested ferrimagnet can fully be magnetized, so as to extract more accurate parameter of magnetic characteristic when carrying out electromagnetic nondestructive, substantially increase the reliability of electromagnetic nondestructive.
Description
Technical field
System occurs for a kind of electromagnetic nondestructive magnetic field excitation, belongs to ferrimagnet electromagnetic nondestructive field.
Background technology
For ferrimagnet as a kind of important construction material, it is widely used in the every field such as petrochemical industry production,
Such as transport line, storage tank, boiler.Electromagnetic nondestructive testing does a kind of fast and effectively detection method in ferromagnetism material
It is widely used in material safety detection.Electromagnetic nondestructive is carried out to ferrimagnet to be needed to tested ferrimagnet magnetization,
By extracting extraction of the magnetic field sensor signal for the ferrimagnet being magnetized to validity feature signal, complete to measured material
Safety evaluation.
Existing electromagnetic nondestructive method is the feature by extracting every parameter of magnetic characteristic of tested ferrimagnet
The physical parameter of value changes indirect detection measured material, and these parameter of magnetic characteristic need to fully magnetise in tested ferrimagnet
In the case of can just accurately extract, but in the various Magnitizing methods of prior art, tend not to just to being tested ferromagnetism material
Material is fully magnetized, therefore the testing result that result in electromagnetic nondestructive testing is not accurate enough, leverages production peace
Entirely.
The content of the invention
The technical problems to be solved in the utility model is：Overcome the deficiencies in the prior art, there is provided one kind can be to being tested iron
Magnetic material is fully magnetized, so as to extract more accurate parameter of magnetic characteristic when carrying out electromagnetic nondestructive, greatly
System occurs for the big electromagnetic nondestructive magnetic field excitation for improving electromagnetic nondestructive reliability.
Technical scheme is used by the utility model solves its technical problem：The electromagnetic nondestructive magnetic field excitation occurs
System, including tested ferrimagnet, it is characterised in that：It is provided with microprocessor module, module occurs for pumping signal, power is put
Big module, magnetization probe module and sampling resistor module；The input of module occurs with pumping signal for the output end of microprocessor
End is connected, and the output end that module occurs for pumping signal is connected with the input of power amplifier module, the output of power amplifier module
To hold and be connected with magnetizing the input of probe module, the output end for magnetizing probe module is connected with the input of sampling resistor module,
The output end of sampling resistor module is connected with the input of microprocessor.Magnetization probe module closely pastes with tested ferrimagnet
Close.
Preferably, described magnetization probe module includes magnetic core, is provided with magnetic core and the tested ferrimagnet
The magnetization probe of fitting；Excitation coil is wound with magnetic core, connection described power amplifier module in excitation coil one end is another
End passes through described sampling resistor module ground.
Preferably, described magnetic core includes left and right two vertical ends and is vertically fixed on two vertical end upper surfaces
One horizontal segment, the lower surface of two vertical ends form described magnetization probe；Described excitation coil is respectively wound around magnetic core
Left and right two vertical ends on.
Preferably, described excitation coil winds and wound respectively in the same direction in left and right two vertical ends of the magnetic core
60 circles.
Preferably, described sampling resistor module uses resistance as 2 Ω, and power is more than 100W resistance.
Preferably, described power amplifier module includes the power amplifier of four groups of different amplifications composed in parallel,
The input of four groups of power amplifiers is provided with 4-bit DIP switch, 4-bit DIP switch respectively with four groups of power amplifier phases
It is corresponding.
Preferably, it is filled with magnetic-conductive adhesive on binding face of the described magnetization probe with tested ferrimagnet.
Compared with prior art, beneficial effect possessed by the utility model is：
1st, system is occurred by the magnetic field excitation of this electromagnetic nondestructive, abundant magnetic can be carried out to tested ferrimagnet
Change, so as to extract more accurate parameter of magnetic characteristic when carrying out electromagnetic nondestructive, substantially increase the lossless inspection of electromagnetism
The reliability of survey.
2nd, by setting the different power amplifier of multigroup multiplication factor in power amplifier module, therefore can be according to feelings
The suitable multiplication factor of condition selection, application are wider.
3rd, pumping signal is adjusted to low frequency signal, the skin that becomes of tested ferrimagnet during so as to effectively reduce detection
Effect.
4th, by that will be filled using magnetic-conductive adhesive between magnetization probe and tested ferrimagnet, can obtain more preferable
Magnetic conduction effect, improve the precision of detection.
Brief description of the drawings
Fig. 1 is that system principle block diagram occurs for a kind of electromagnetic nondestructive magnetic field excitation.
Fig. 2 is that system magnetization probe module structural representation occurs for a kind of electromagnetic nondestructive magnetic field excitation.
Wherein：1st, magnetic core 2, excitation coil 3, tested ferrimagnet 4, sampling resistor.
Embodiment
Fig. 1 ~ 2 are most preferred embodiments of the present utility model, and 1 ~ 2 pair of the utility model is done furtherly below in conjunction with the accompanying drawings
It is bright.
As shown in figure 1, system, including microprocessor module, pumping signal occur for a kind of electromagnetic nondestructive magnetic field excitation
Generation module, power amplifier module, magnetization probe module and sampling resistor module.The output end and pumping signal of microprocessor
The input that module occurs is connected, and the output end that module occurs for pumping signal is connected with the input of power amplifier module, power
The output end of amplification module is connected with magnetizing the input of probe module, magnetizes the output end and sampling resistor module of probe module
Input be connected, the output end of sampling resistor module is connected with the input of microprocessor.
When needing to magnetize measured material, the probe for magnetizing probe module is bonded with the surface of measured material,
Then microprocessor module sends pumping signal by controlling pumping signal that module occurs, and pumping signal is sent into power amplifier module
It is sent into after interior progress signal amplification in magnetization probe module, pumping signal sensing in magnetization is popped one's head in produces magnetic field, magnetic field loading
Into measured material, the magnetization to measured material is realized.
As shown in Fig. 2 magnetization probe module includes magnetic core 1, magnetic core 1 includes left and right two vertical ends and is fixed on perpendicular
One horizontal segment of straight end upper surface, horizontal segment vertically form reverse U-shaped shape, magnetic core 1 with the vertical end of left and right two simultaneously
The lower surface of two vertical ends is bonded with the surface of tested ferrimagnet 3 simultaneously as magnetization probe simultaneously.The height of magnetic core 1
It is 4cm so as to form area at magnetization probe for 50mm, length 70mm, width 20mm2Magnetizing surface, the two of magnetic core 1
Spacing between individual magnetization probe is 30mm.Between the magnetizing surface of magnetization probe and the contact surface of tested ferrimagnet 3 are present
During gap, gap is filled using magnetic-conductive adhesive.
Excitation coil 2 is wound with magnetic core 1, excitation coil 2 is wrapped in the left side vertical section of magnetic core 1 successively and right side is erected
On straight section, the winding number of turns is identical with direction.The one end of excitation coil 2 connects the output end of above-mentioned power amplifier module, and the other end is complete
It is connected after into corresponding winding with one end of sampling resistor 4, the other end of sampling resistor 4 is grounded, the voltage on sampling resistor 4
In signal access microprocessor module, sampling resistor 4 is above-mentioned sampling resistor module.
Excitation coil 2 uses a diameter of 0.8mm enamel-covered wire, and excitation coil 2 twines respectively in two vertical sections of magnetic core 1
Around 60 circles, sampling resistor 4 uses resistance as 2 Ω, and power is more than 100W resistance.Above-mentioned microprocessor, which uses, to be had at 32
The STM32F407ZGT6 of reason ability.
Pumping signal occurs module and realized by model AD9850 chip, and module occurs for pumping signal by microprocessor mould
Block carries out system configuration, and microprocessor module sends different control commands so that pumping signal occurs module and can produce different frequencies
The periodic signal of rate, amplitude, signal form have sine wave, triangular wave, square wave etc.；Frequency range in 20 ~ 100Hz, amplitude ±
Within 3.3V, pumping signal is adjusted to low frequency signal, the skin that becomes of tested ferrimagnet during so as to effectively reduce detection
Effect.
Power amplifier module includes the power amplifier of four groups of different amplifications composed in parallel, using model
LM3886TF power amplifier realizes that peak power output is up to 200W.It is provided with the input of four groups of power amplifiers
4-bit DIP switch, 4-bit DIP switch is corresponding with four groups of power amplifiers respectively, and difference is realized by stirring toggle switch
The regulation of amplifying power.
Specific work process and principle are as follows：
The test surfaces of two magnetization probes and tested ferrimagnet 3 in magnetic core 1 are fitted first, and in faying face
Between be filled using magnetic-conductive adhesive.Then suitable amplifying power is selected by power amplifier module, then passes through microprocessor
Device module makes pumping signal that module generation pumping signal, the excitation line that pumping signal is sent into magnetization probe module simultaneously occur
In circle 2, the sensing in magnetic core 1 after input signal of excitation coil 2 produces magnetic field, and magnetic field is to being tested ferrimagnet 3
Sensed, so as to which tested ferrimagnet 3 be magnetized.When sending high-frequency noise in magnetic core 1, it was demonstrated that tested ferromagnetism
Magnetic saturation has been fully achieved in the magnetic loop of material 3 and magnetic core 1, and measured material reaches maximal magnetization degree.
Pumping signal is grounded by sampling resistor 4 simultaneously, because sampling resistor 4 is accessed in microprocessor module, therefore it is micro-
Processor module passes through formula：It can obtain sensing obtained magnetic field intensity in magnetic loop, in the formula,For the electricity value at the both ends of sampling resistor 4；R1Represent the resistance of sampling resistor 4；N1For the number of turn of excitation coil 2；L is tested magnetic
The average length on road.
It is described above, only it is preferred embodiment of the present utility model, is not that other forms are made to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of change.But it is every without departing from the content of the technical scheme of the utility model, it is real according to technology of the present utility model
Any simple modification, equivalent variations and the remodeling that confrontation above example is made, still fall within the guarantor of technical solutions of the utility model
Protect scope.
Claims (7)
1. system, including tested ferrimagnet occur for a kind of electromagnetic nondestructive magnetic field excitation（3）, it is characterised in that：Set
There are microprocessor module, pumping signal that module, power amplifier module, magnetization probe module and sampling resistor module occurs；It is micro-
The input that module occurs with pumping signal for the output end of processor is connected, and the output end that module occurs for pumping signal is put with power
The input of big module is connected, and the output end of power amplifier module is connected with magnetizing the input of probe module, magnetization probe mould
The output end of block is connected with the input of sampling resistor module, the output end of sampling resistor module and the input phase of microprocessor
Even；
Magnetize probe module and tested ferrimagnet（3）It is brought into close contact.
2. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 1, it is characterised in that：Described magnetic
Changing probe module includes magnetic core（1）, in magnetic core（1）On be provided with and the tested ferrimagnet（3）The magnetization probe of fitting；
In magnetic core（1）On be wound with excitation coil（2）, excitation coil（2）The described power amplifier module of one end connection, the other end pass through
Described sampling resistor module ground.
3. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 2, it is characterised in that：Described magnetic
Core（1）Including left and right two vertical ends and it is vertically fixed on a horizontal segment of two vertical end upper surfaces, two vertical ends
Lower surface form described magnetization probe；Described excitation coil（2）It is respectively wound around magnetic core（1）Left and right two it is vertical
On end.
4. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 3, it is characterised in that：Described swashs
Encourage coil（2）In the magnetic core（1）Left and right two vertical ends in the same direction wind and respectively winding 60 circle.
5. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 1 or 2, it is characterised in that：It is described
Sampling resistor module use resistance as 2 Ω, power be more than 100W resistance.
6. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 1, it is characterised in that：Described work(
Rate amplification module includes the power amplifier of four groups of different amplifications composed in parallel, in the input of four groups of power amplifiers
4-bit DIP switch is provided with, 4-bit DIP switch is corresponding with four groups of power amplifiers respectively.
7. system occurs for a kind of electromagnetic nondestructive magnetic field excitation according to claim 2, it is characterised in that：Described
Magnetization probe and tested ferrimagnet（3）Binding face on be filled with magnetic-conductive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720677828.XU CN206945607U (en) | 2017-06-12 | 2017-06-12 | System occurs for a kind of electromagnetic nondestructive magnetic field excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720677828.XU CN206945607U (en) | 2017-06-12 | 2017-06-12 | System occurs for a kind of electromagnetic nondestructive magnetic field excitation |
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| Publication Number | Publication Date |
|---|---|
| CN206945607U true CN206945607U (en) | 2018-01-30 |
Family
ID=61364019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720677828.XU Active CN206945607U (en) | 2017-06-12 | 2017-06-12 | System occurs for a kind of electromagnetic nondestructive magnetic field excitation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133549A (en) * | 2019-06-06 | 2019-08-16 | 南京邮电大学 | A kind of magnetic loss measuring table of integrated universal equipment |
| CN110823997A (en) * | 2019-10-29 | 2020-02-21 | 万向钱潮股份有限公司 | Nondestructive measurement device and method for core ferrite of shaft part |
-
2017
- 2017-06-12 CN CN201720677828.XU patent/CN206945607U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133549A (en) * | 2019-06-06 | 2019-08-16 | 南京邮电大学 | A kind of magnetic loss measuring table of integrated universal equipment |
| CN110823997A (en) * | 2019-10-29 | 2020-02-21 | 万向钱潮股份有限公司 | Nondestructive measurement device and method for core ferrite of shaft part |
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