CN105548924A - Magnetic Barkhausen and magnetic parameter sensor and measurement method of magnetic Barkhausen and magnetic parameter - Google Patents
Magnetic Barkhausen and magnetic parameter sensor and measurement method of magnetic Barkhausen and magnetic parameter Download PDFInfo
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- CN105548924A CN105548924A CN201610061499.6A CN201610061499A CN105548924A CN 105548924 A CN105548924 A CN 105548924A CN 201610061499 A CN201610061499 A CN 201610061499A CN 105548924 A CN105548924 A CN 105548924A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
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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
- G01N27/725—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables by using magneto-acoustical effects or the Barkhausen effect
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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 present invention discloses a magnetic Barkhausen and magnetic parameter sensor and a measurement method of a magnetic Barkhausen and magnetic parameter. The sensor comprises: a signal transmission interface electrically connected with an excitation coil and a signal receiving assembly and configured to transmit excitation signals to the excitation coil for receiving signals returned by the signal receiving assembly; the excitation coil encircled at one end of a magnet yoke and configured to trigger a magnetic parameter measurement assembly; the induction coil, in the magnetic parameter measurement assembly, encircled at the other end of the magnet yoke and configured to return a first feedback signal according to the excitation signals; and a Barkhausen signal measurement assembly connected with a housing and configured to return a second feedback signal according to the excitation signals. The problems are solved that the detection efficiency is reduced and the material state of metal materials cannot be comprehensively evaluated due to the lack of a technology capable of measuring a Barkhausen noise and magnetism parameters of the metal structure materials at the same time in the same detection device in the correlation technology.
Description
Technical field
The present invention relates to material tests applied technical field, in particular to a kind of magnetic Barkhausen and magnetic parameter sensor and measuring method.
Background technology
Ferrimagnet is widely used in engineering, if the main bodys such as railway, large-scale stadium, boiler, pressure vessel, pressure pipeline, hoisting machinery, passenger aerial ropeway, large-scale recreation facility and large bridge are by ferrimagnet structure composition, they are important infrastructures of the development of the national economy and people's life.Above-mentioned steel construction, in the process of manufacture, military service, often needs to carry out Non-Destructive Testing to its defect, stress, fatigue, creep equivalent damage, to carry out quality control and safety evaluation.Particularly high ferro train bogie, in this steel construction military service process, easily crack, because bogie is in bottom train, detect and observation inconvenience, therefore as adopted sensor to its on-line checkingi, to become very important, and the generation of crackle is the process of a chronic fatigue, therefore, when detecting, measuring this steel structure material magnetic parameter (as coercive force, residual magnetization and magnetic permeability etc.) and Barkhausen noise and can assess the defects such as the above-mentioned damage of ferromagnetic material and Timeliness coverage material crack.
Only be confined to measure Barkhausen noise or this steel structure material magnetic parameter to the detection of steel construction in correlation technique, but in same checkout equipment, how to measure Magnetic Barkhausen noise and this structured material magnetic parameter simultaneously, become the clear area of defect in art technology.
For the above-mentioned technology owing to lacking the magnetic parameter measuring Magnetic Barkhausen noise and structural metallic materials in same checkout equipment in correlation technique simultaneously, cause the problem that detection efficiency reduces, and comprehensively can not assess the materials behavior of metal material, at present effective solution is not yet proposed.
Summary of the invention
Embodiments provide a kind of magnetic Barkhausen and magnetic parameter sensor and measuring method, at least to solve the technology owing to lacking the magnetic parameter measuring Magnetic Barkhausen noise and this structural metallic materials in same checkout equipment in correlation technique simultaneously, the technical matters that detection efficiency reduces, and comprehensively can not assess the technical matters of the problem of the materials behavior of metal material.
According to an aspect of the embodiment of the present invention, provide the sensor of a kind of magnetic Barkhausen and magnetic parameter, comprise: housing, signal transmission interface, drive coil, yoke and signal receiving assembly, wherein, signal transmission interface, is electrically connected with drive coil and signal receiving assembly, for the signal returned to drive coil transmission pumping signal and Received signal strength receiving unit, wherein, signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components; Drive coil, is surrounded on one end of yoke, for triggering magnetic parameter measurement components; Inductive coil in magnetic parameter measurement components, is surrounded on the other end of yoke, for returning the first feedback signal according to pumping signal; Barkhausen signal measurement components, is connected with housing, for returning the second feedback signal according to pumping signal.
According to another aspect of the embodiment of the present invention, provide a kind of measuring method measuring magnetic Barkhausen and magnetic parameter, be applied to the sensor of magnetic Barkhausen and magnetic parameter, comprise: by signal transmission interface input signal; According to pumping signal trigger activator coil and signal receiving assembly, wherein, drive coil is surrounded on yoke, and signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components; The first feedback signal and second feedback signal of detected materials is returned respectively by the inductive coil in magnetic parameter measurement components and barkhausen signal measurement components; The first feedback signal and the second feedback signal is exported by signal transmission interface.
In embodiments of the present invention, by housing, signal transmission interface, drive coil, yoke and signal receiving assembly, wherein, signal transmission interface, be electrically connected with drive coil and signal receiving assembly, for the signal returned to drive coil transmission pumping signal and Received signal strength receiving unit, wherein, signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components; Drive coil, is surrounded on one end of yoke, for triggering magnetic parameter measurement components; Inductive coil in magnetic parameter measurement components, is surrounded on the other end of yoke, for returning the first feedback signal according to pumping signal; Barkhausen signal measurement components, is connected with housing, for returning the second feedback signal according to pumping signal.Reach object material to be measured being gathered simultaneously to magnetic parameter and Barkhausen noise, thus achieve the technique effect of the materials behavior at comprehensive assessment metal material, and then the technology solved owing to lacking the magnetic parameter measuring Magnetic Barkhausen noise and this structural metallic materials in same checkout equipment in correlation technique simultaneously, the technical matters that detection efficiency reduces, and comprehensively can not assess the technical matters of the problem of the materials behavior of metal material.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor;
Fig. 2 is a kind of magnetic hysteresis loop schematic diagram provided according to the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor;
Fig. 4 is the structural representation of another kind of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor;
Fig. 5 is the schematic flow sheet according to the measurement magnetic Barkhausen of the embodiment of the present invention and the measuring method of magnetic parameter.
Embodiment
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in instructions of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment one
According to the embodiment of the present invention, provide the device embodiment of a kind of magnetic Barkhausen and magnetic parameter sensor, Fig. 1 is the structural representation of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor, as shown in Figure 1, this device comprises: housing 12, signal transmission interface 14, drive coil 16, yoke 18 and signal receiving assembly 20, wherein
Signal transmission interface 14, be electrically connected with drive coil 16 and signal receiving assembly 20, for transmitting the feedback signal that pumping signal and Received signal strength receiving unit 20 return to drive coil 16, wherein, signal receiving assembly 20 comprises: magnetic parameter measurement components and barkhausen signal measurement components;
Drive coil 16, is surrounded on one end of yoke 18, for triggering magnetic parameter measurement components by pumping signal;
Inductive coil in magnetic parameter measurement components, is surrounded on the other end of yoke 18, for returning the first feedback signal according to pumping signal;
Barkhausen signal measurement components, is connected with housing 12, for returning the second feedback signal according to pumping signal.
The technology simultaneously measuring Magnetic Barkhausen noise and structural metallic materials magnetic parameter in same checkout equipment is lacked for correlation technique, cause the problem comprehensively can not assessing the materials behavior of iron material, the embodiment of the present application provides and proposes a kind of sensor measuring magnetic Barkhausen and magnetic parameter, this sensor can measure magnetic metal material parameter of magnetic characteristic and Barkhausen noise simultaneously, for defects such as comprehensive assessment magnetic metal material fatigue state and discovery material cracks, that is, the integral sensor of magnetic Barkhausen and magnetic parameter is measured.
Concrete, in the housing 12 that the embodiment of the present application provides, signal transmission interface 14, drive coil 16, yoke 18 and signal receiving assembly 20, yoke 18 can be U-shaped yoke, and this U-shaped yoke can be the U-shaped yoke of high-permeability material, wherein, this U-shaped yoke can be high-permeability material, as the yoke of siliconized plate material.When detecting material to be measured, the magnetic field excited in drive coil 16 produces field circuit by the loop formed between U-shaped yoke and material to be detected, and the size of induced field strength can be obtained by the voltage measuring the inductive coil in magnetic parameter measurement components, further, barkhausen signal measurement components in signal receiving assembly 20 by with material contacts to be detected, obtain Barkhausen noise signal, simultaneously, yoke bottom surface contacts with surface of the work, drive coil by signal source when amplifying signal encourages, induced signal will be produced in inductive coil, by Barkhausen noise signal to measure magnetization curve and the parameter of magnetic characteristic such as magnetic hysteresis loop and coercive force.
Here the U-shaped yoke that high-permeability material (as siliconized plate) is made is used; And optional position is around one or more snippets coil of finger in yoke 18, by the coils connected in series of these coilings or compose in parallel drive coil 16, the wire (as copper enameled wire) of the appearance insulation that this drive coil 16 uses can be sub-thread or multi cord; During measurement, the magnetic field excited in drive coil 16 produces field circuit by the loop needing at U to form between yoke and detected materials; In yoke 18, optional position is also around one or more snippets coil of finger, and by the coils connected in series of these coilings or compose in parallel inductive coil, the wire (as copper enameled wire) of the appearance insulation that coil uses can be sub-thread or multi cord; In the two ends resistance in series of inductive coil, during measurement, the loop that inductive coil and resistance R are composed in series, by generation current, can obtain the size of induced field strength by coil both end voltage; Barkhausen noise measurement components is made up of the spiral winding of wire coiling, in order to strengthen its induced field size, can place magnetic core in the middle part of spiral winding, and magnetic core high-permeability material (as silicon steel) is made.It should be noted that, the situation that inductive coil is connected with resistance R is, when the number of turn of inductive coil is less than predetermined threshold value, contact resistance R, to make measurement obtain voltage, and then obtain induced field size, but when the number of turn of inductive coil is greater than predetermined threshold value, to not need contact resistance R can the voltage at direct-detection inductive coil two ends, and then obtain induced field size.
The measurement magnetic Barkhausen that the embodiment of the present application provides and the sensor of magnetic parameter are for ferrimagnet, its internal electron attracts by atomic nucleus, electronics carries out revolution around atomic nucleus and produces magnetic moment, due to the Spin Interaction of electronics, and atomic magnetism marshalling in zonule, direction of magnetization is consistent, this zonule becomes magnetic domain, and the transitional region between magnetic domain becomes neticdomain wall, is not having under external magnetic field effect, different, the stochastic distribution of direction of magnetization between each magnetic domain, therefore its external aobvious magnetic.When by external magnetic field effect, the magnetic moment of magnetic domain transfers externally-applied magnetic field direction gradually to, or close to the direction of externally-applied magnetic field, now material externally will show magnetic, this process becomes magnetic history, and due to factors such as influencing each other between magnetic domain in magnetic history, in magnetic history, magnetic barkhausen signal will be produced.Fig. 2 is a kind of magnetic hysteresis loop schematic diagram provided according to the embodiment of the present invention, and as shown in Figure 2, when magnetic field intensity H increases gradually from zero, in parts, magnetic induction density B is also increased to saturated gradually, and this process B is magnetization curve with the curve that H changes.After magnetic field intensity is increased to Hm, be reduced to-Hm gradually, induced field strength will not prolong magnetization curve 0a and change, but extension curve abcd changes, and when magnetic field is increased to Hm again by-Hm, induced field strength will prolong defa change, and this law curve is called magnetic hysteresis loop.As H=0, induced field strength Br is non-vanishing, and Br is called residual induction.As B=0, magnetic field intensity He is now called coercive force, and therefore for this apparatus measures, the continuous sine using function generator to produce or other signals, front
rear B will be B-H loop with H change.Coercitive size can be obtained from BH curve.Material associated magnetic characterisitic parameter can be obtained by magnetization curve, magnetic hysteresis loop.And the factors such as the fatigue of material internal, internal stress will affect magnetization curve, barkhausen signal and magnetic hysteresis loop etc., therefore learn material internal situation by magnetization curve, barkhausen signal and magnetic hysteresis loop etc.The measurement magnetic Barkhausen that the embodiment of the present application provides and the sensor of magnetic parameter achieve the technique effect simultaneously gathering magnetic parameter and Barkhausen noise in same equipment according to above-mentioned principle, thus solve owing to lacking the technology measuring Magnetic Barkhausen noise and structural metallic materials magnetic parameter in same checkout equipment in correlation technique simultaneously, comprehensively can not assess the technical matters of the materials behavior of iron material.
In the measurement magnetic Barkhausen that the embodiment of the present invention provides and the sensor of magnetic parameter, by housing, signal transmission interface, drive coil, yoke and signal receiving assembly, wherein, signal transmission interface, be electrically connected with drive coil and signal receiving assembly, for the signal returned to drive coil transmission pumping signal and Received signal strength receiving unit, wherein, signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components; Drive coil, is surrounded on one end of yoke, for triggering magnetic parameter measurement components; Inductive coil in magnetic parameter measurement components, is surrounded on the other end of yoke, for returning the first feedback signal according to pumping signal; Barkhausen signal measurement components, is connected with housing, for returning the second feedback signal according to pumping signal.Reach object material to be measured being gathered simultaneously to magnetic parameter and Barkhausen noise, thus achieve the technique effect of the materials behavior at comprehensive assessment metal material, and then the technology solved owing to lacking the magnetic parameter measuring Magnetic Barkhausen noise and this structural metallic materials in same checkout equipment in correlation technique simultaneously, the technical matters that detection efficiency reduces, and comprehensively can not assess the technical matters of the problem of the materials behavior of metal material.
Concrete, Fig. 3 is the structural representation of a kind of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor, as shown in Figure 3, the measurement magnetic Barkhausen that the embodiment of the present application provides and the sensor of magnetic parameter specific as follows:
Optionally, as shown in Figure 3, signal transmission interface 14 comprises: signal input interface and signal output interface, wherein,
Signal input interface, is electrically connected, for input signal with the input end of drive coil 16 and signal receiving assembly 20 respectively;
Signal output interface, is electrically connected with the output terminal of signal receiving assembly 20 respectively, for the second feedback signal of the first feedback signal and barkhausen signal measurement components that export inductive coil (3).
Concrete, in figure 3, signal transmission interface 14 is labeled as connector lug (2), drive coil 16 (being labeled as drive coil (8) in Fig. 3) two ends are drawn by connector lug (2), are drawn at the two ends of inductive coil (3) and barkhausen signal measurement components by the connector lug (2) of relevant position on other half housing.
Optionally, as shown in Figure 3, barkhausen signal measurement components comprises: magnetic core (4), elastic parts (6) and wound coil (5), wherein,
Wound coil (5), wounded core (4), for receiving the second feedback signal that detected materials returns;
Magnetic core (4), is connected with housing (1) by elastic parts (6), and for strengthening the second feedback signal, the second feedback signal comprises: barkhausen signal.
Concrete, under magnetic core (4) hangs on the housing (1) shown in Fig. 3 by elastic parts (6), can touch according to the surface of detected materials is flexible to make magnetic core (4), contact completely with detected materials to ensure, improving measurement accuracy, wherein, magnetic core (4) can be had an appointment the sliding space (that is, extendable room) of 1 ~ 2mm in housing (1).
Optionally, elastic parts (6) comprising: spring or shell fragment.
As shown in Figure 3, the elastic parts (6) in the embodiment of the present application is described for spring, but is actually and reaches same above-mentioned telescopic effect, and shell fragment also can be used for connecting magnetic core (4) and housing (1).
Wherein, as shown in Figure 3, by 2 spring fittings between housing (1) and magnetic core (4), magnetic core (4) can be had an appointment the slip of 1 ~ 2mm at housing (1), when making detection magnetic core (4) can fully with material contacts to be detected.
Optionally, as shown in Figure 3, wound coil (5) for wound coil be the wire that surface scribbles insulating material, this wound coil comprises: copper core enameled wire loop.
Here wound coil (5) can be diameter 0.07mm copper core enameled wire, and the number of turn is 2000.
Optionally, as shown in Figure 3, yoke 18 is U-shaped yoke (7), and magnetic core (4) is positioned at the U-shaped district of U-shaped yoke (7).
Concrete, as shown in Figure 3, yoke 18 be U-shaped yoke (7), and, magnetic core (4) in the U-shaped district of U-shaped yoke (7), that is, the both sides of middle yoke 18 shown in Fig. 3.
Optionally, as shown in Figure 3, inductive coil (3) and drive coil (8) are the wire that surface scribbles insulating material, and inductive coil and drive coil comprise: copper core enameled wire loop, and wherein, inductive coil is electrically connected with resistance.
Concrete, the inductive coil (3) that the embodiment of the present application provides and drive coil (8) are wound in yoke 18 (the U-shaped yoke (7) namely in Fig. 3) respectively, inductive coil (3) can be arranged at the arbitrary side in the U-shaped side of U-shaped yoke (7), drive coil (8) can be arranged at the crossbar sections of U-shaped yoke (7), wherein, inductive coil (3) can be diameter 0.1mm copper core enameled wire, and the number of turn is 400; Drive coil (8) can be diameter 0.2mm copper core enameled wire, and the number of turn is 520.
Optionally, as shown in Figure 3, housing (1) comprising: the first housing and the second housing, and wherein, the first housing and the second housing comprise: housing connecting hole, housing register pin group and device connecting hole,
Housing register pin group comprises: register pin and pilot hole, and register pin and pilot hole are distributed in the first housing and the second housing respectively, for calibrating the junction of the first housing and the second housing;
Housing connecting hole, for fixing the first housing and the second housing;
Device connecting hole, for the sensor of fixation measuring magnetic Barkhausen and magnetic parameter to measuring support.
Here the first housing and the second housing are symmetrical structure, housing (1) shown in Fig. 3 can be the first housing and the arbitrary side of the second housing, when connector lug (2), inductive coil (3), magnetic core (4), wound coil (5), elastic parts (6), when U-shaped yoke (7) and drive coil (8) are arranged at the first housing, second housing is only the symmetrical structure of the first housing, wherein, first housing and the second housing are provided with housing connecting hole and device connecting hole, wherein, housing register pin group, if what the first housing was arranged is pilot hole, what then the second housing is arranged is register pin, by butt junction location pin and pilot hole, calibrate the junction of the first housing and the second housing.
Concrete, composition graphs 3, in the measurement magnetic Barkhausen that the embodiment of the present application provides and the sensor of magnetic parameter, housing (1) is made up of the first housing and the second housing two housings, each housing there are 2 device connecting holes (this device connecting hole can be threaded hole), first housing and the second housing be 4 threaded holes altogether, measure the installation of the sensor of magnetic Barkhausen and magnetic parameter on automatic checkout equipment.Measure in the sensor of magnetic Barkhausen and magnetic parameter and the first housing also has 4 housing connecting holes (this housing connecting hole also can be threaded hole), for the connection of the first housing and the second housing, and the housing register pin group between two housings, make accurately to align installation by register pin between the first housing and the second housing.
As shown in Figure 4, Fig. 4 is the structural representation of another kind of magnetic Barkhausen according to the embodiment of the present invention and magnetic parameter sensor, the parts completely showing magnetic are to external world put into magnetic field, when magnetic field intensity H increases gradually from zero, in parts, magnetic induction density B is also set up and is increased to saturated, and this process B is magnetization curve with the curve that H changes.For the sensor measuring magnetic Barkhausen and magnetic parameter, during measurement, the test surface and tested parts surface of measuring the sensor of magnetic Barkhausen and magnetic parameter are fitted tightly, continuation sinusoidal or other signals is produced, by measuring the inductive coil both end voltage U when the period 1 by function generator
2b-H magnetization curve can be obtained.
Wherein, if number of energized coils is N in Fig. 4
1circle and the line of induction number of turns are N
2circle.If at coil N
1in by magnetization current I
1time, this electric current produces magnetic field in sample, according to Ampere circuit law H (L
1+ L
2)=N
1i
1, the size of magnetic field intensity is:
induced field strength size is:
(k is scale-up factor).
Embodiment two
According to the embodiment of the present invention, provide a kind of embodiment of the method measuring the measuring method of magnetic Barkhausen and magnetic parameter, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the process flow diagram of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 5 is the schematic flow sheet according to the measurement magnetic Barkhausen of the embodiment of the present invention and the measuring method of magnetic parameter, and as shown in Figure 5, be applied in the sensor of the measurement magnetic Barkhausen shown in Fig. 1 to Fig. 4 and magnetic parameter, this measuring method comprises the steps:
Step S502, by signal transmission interface input signal;
Step S504, according to pumping signal trigger activator coil and signal receiving assembly, wherein, drive coil is surrounded on yoke, and signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components;
Step S506, returns the first feedback signal and second feedback signal of detected materials respectively by the inductive coil in magnetic parameter measurement components and barkhausen signal measurement components;
Step S508, exports the first feedback signal and the second feedback signal by signal transmission interface.
Concrete, when detecting material to be measured, field circuit is produced by the loop formed between U-shaped yoke and material to be detected according to the magnetic field excited in excitation signal energizes coil, and the size of induced field strength can be obtained by the voltage measuring the inductive coil in magnetic parameter measurement components, further, barkhausen signal measurement components in signal receiving assembly by with material contacts to be detected, obtain Barkhausen noise signal, simultaneously, yoke bottom surface contacts with surface of the work, drive coil by signal source when amplifying signal encourages, induced signal will be produced in inductive coil, by Barkhausen noise signal to measure magnetization curve and the parameter of magnetic characteristic such as magnetic hysteresis loop and coercive force.
The measurement magnetic Barkhausen that the embodiment of the present invention provides and the measuring method of magnetic parameter, by signal transmission interface input signal; According to pumping signal trigger activator coil and signal receiving assembly, wherein, drive coil is surrounded on yoke, and signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components; The first feedback signal and second feedback signal of detected materials is returned respectively by the inductive coil in magnetic parameter measurement components and barkhausen signal measurement components; The first feedback signal and the second feedback signal is exported by signal transmission interface.Reach object material to be measured being gathered simultaneously to magnetic parameter and Barkhausen noise, thus achieve the technique effect of the materials behavior at comprehensive assessment metal material, and then the technology solved owing to lacking the magnetic parameter measuring Magnetic Barkhausen noise and this structural metallic materials in same checkout equipment in correlation technique simultaneously, the technical matters that detection efficiency reduces, and comprehensively can not assess the technical matters of the problem of the materials behavior of metal material.
Optionally, the first feedback signal of detected materials is returned respectively by the inductive coil in magnetic parameter measurement components and barkhausen signal measurement components in step S506 and the second feedback signal comprises:
Step1, returns the first feedback signal by the resistance be electrically connected with inductive coil, and the first feedback signal comprises: induced field strength signal;
Step2, return the second feedback signal by the surface of barkhausen signal measurement components contact measured material, the second feedback signal comprises: Barkhausen noise.
Concrete, in conjunction with Step1 and Step2, when gathering the first feedback signal of inductive coil, when the number of turn of inductive coil is less than predetermined threshold value, by the voltage of resistance measurement inductive coil of connecting with inductive coil, and then obtain induced field strength according to this voltage; When the number of turn of inductive coil is greater than predetermined threshold value, directly measure the voltage of inductive coil both sides;
When gathering Barkhausen noise, needing the magnetic core in barkhausen signal measurement components to be close to detected materials, and then obtaining the Barkhausen noise of this detected materials.Wherein, this magnetic core is connected with housing by elastic parts as shown in Figure 3, to make to be close to detected materials according to the surface levelness of detected materials in the process measured, thus improving measurement accuracy.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. magnetic Barkhausen and a magnetic parameter sensor, is characterized in that, comprising: housing, signal transmission interface, drive coil, yoke and signal receiving assembly, wherein,
Described signal transmission interface, be electrically connected with described drive coil and described signal receiving assembly, for to described drive coil transmission pumping signal and receive the signal that described signal receiving assembly returns, wherein, described signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components;
Described drive coil, is surrounded on one end of described yoke, for triggering described magnetic parameter measurement components;
Inductive coil in described magnetic parameter measurement components, is surrounded on the other end of described yoke, for returning the first feedback signal according to described pumping signal;
Described barkhausen signal measurement components, is connected with described housing, for returning the second feedback signal according to described pumping signal.
2. sensor according to claim 1, is characterized in that, described signal transmission interface comprises: signal input interface and signal output interface, wherein,
Described signal input interface, is electrically connected with the input end of described drive coil and described signal receiving assembly respectively, for inputting described pumping signal;
Described signal output interface, is electrically connected with the output terminal of described signal receiving assembly respectively, for the second feedback signal of the first feedback signal and described barkhausen signal measurement components that export described inductive coil.
3. sensor according to claim 1, is characterized in that, described barkhausen signal measurement components comprises: wound coil, magnetic core and elastic parts, wherein,
Described wound coil, around described magnetic core, for receiving described second feedback signal that detected materials returns;
Described magnetic core, is connected with described housing by described elastic parts, and for strengthening described second feedback signal, described second feedback signal comprises: barkhausen signal.
4. sensor according to claim 3, is characterized in that, described elastic parts comprises: spring or shell fragment.
5. sensor according to claim 3, is characterized in that, described wound coil is the wire that surface scribbles insulating material, and described wound coil comprises: copper core enameled wire.
6. sensor according to claim 3, is characterized in that, described yoke is U-shaped yoke, and described magnetic core is positioned at the U-shaped district of described U-shaped yoke.
7. sensor according to claim 1, it is characterized in that, described inductive coil and described drive coil are the wire that surface scribbles insulating material, and described inductive coil and described drive coil comprise: copper core enameled wire loop, wherein, described inductive coil is electrically connected with resistance.
8. sensor according to claim 1, is characterized in that, described housing comprises: the first housing and the second housing, and wherein, described first housing and described second housing comprise: housing connecting hole, housing register pin group and device connecting hole,
Described housing register pin group comprises: register pin and pilot hole, and described register pin and described pilot hole are distributed in described first housing and described second housing respectively, for calibrating the junction of described first housing and described second housing;
Described housing connecting hole, for fixing described first housing and described second housing;
Described device connecting hole, for fixing the sensor of described measurement magnetic Barkhausen and magnetic parameter to measuring support.
9. measure a measuring method for magnetic Barkhausen and magnetic parameter, it is characterized in that, be applied to magnetic Barkhausen according to any one of claim 1 to 8 and magnetic parameter sensor, comprise:
By signal transmission interface input signal;
Trigger described drive coil and signal receiving assembly according to described pumping signal, wherein, described drive coil is surrounded on yoke, and described signal receiving assembly comprises: magnetic parameter measurement components and barkhausen signal measurement components;
The first feedback signal and second feedback signal of detected materials is returned respectively by the described inductive coil in described magnetic parameter measurement components and described barkhausen signal measurement components;
Described first feedback signal and described second feedback signal is exported by described signal transmission interface.
10. measuring method according to claim 9, it is characterized in that, describedly return the first feedback signal of detected materials respectively by the described inductive coil in described magnetic parameter measurement components and described barkhausen signal measurement components and the second feedback signal comprises:
Return the first feedback signal by the resistance be electrically connected with described inductive coil, described first feedback signal comprises: induced field strength signal;
The surface contacting described detected materials by described barkhausen signal measurement components returns the second feedback signal, and described second feedback signal comprises: Barkhausen noise.
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| CN111257807B (en) * | 2020-02-21 | 2022-05-03 | 北京工业大学 | Simulation method of magnetic Barkhausen noise signal in stress-containing two-phase ferromagnetic material |
| CN117268961A (en) * | 2023-11-23 | 2023-12-22 | 宁波市特种设备检验研究院 | Fatigue failure early warning method for metal parts |
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