CN203203962U - Portable Barkhausen noise stress detector based on embedded system - Google Patents
Portable Barkhausen noise stress detector based on embedded system Download PDFInfo
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- CN203203962U CN203203962U CN 201320056988 CN201320056988U CN203203962U CN 203203962 U CN203203962 U CN 203203962U CN 201320056988 CN201320056988 CN 201320056988 CN 201320056988 U CN201320056988 U CN 201320056988U CN 203203962 U CN203203962 U CN 203203962U
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Abstract
The utility model discloses a portable Barkhausen noise stress detector based on an embedded system. The detector comprises a magnetizer, a signal acquisition device, a signal processing circuit, a controller, an upper computer, a human-computer interaction module and a power supply module, wherein control instructions transmitted by the human-computer interaction module are processed by the upper computer and then are output to the controller, and the controller controls the signal processing circuit to output excitation signals to the magnetizer according to the control instructions so as to magnetize a ferromagnetic material to be detected; the signal acquisition device acquires noise signals and transmits the noise signals to the controller through the signal processing circuit, the controller processes the acquired noise signals, transmits the processed signals to the upper computer and then outputs the processed signals to the human-computer interaction module so as to display relevant values and a real-time curve. According to the detector disclosed by the utility model, on the basis of accurate measurement, not only can the requirements on portability be met, but also the user interface is good and the operation is convenient.
Description
Technical field
The utility model relates to the stress distribution detection technique field of ferromagnetic material, particularly a kind of portable Barkhausen noise tension gauge based on embedded system.
Background technology
The Barkhausen noise detection method is a kind of very important lossless detection method, and it thinks that the stress characteristics that this microphenomenon that the magnetic domain upset takes place can be reacted ferrimagnet inside is understood in ferrimagnet inside when ferrimagnet is magnetized.Many researchers have done following experiment based on above-mentioned theory: magnetize ferrimagnet with drive coil, then receiving coil is placed on the ferrimagnet surface and just can detects the noise signal that the magnetic domain upset produces; Meanwhile, they find that also there are dull corresponding relation in this noise signal and stress, can determine size and the distribution of ferrimagnet internal stress by measuring the intensity of this signal.Portable Barkhausen noise stress checkout equipment is to utilize Barkhausen's principle to carry out the specialized equipment that ferrimagnet stress detects, and is the constantly product of development of Dynamic Non-Destruction Measurement.At present, the multiple stress analysis instrument that has been born both at home and abroad is as the μ-Scan500C of Finland company development, the 3MA-II of certain Research Institute of Germany etc.Yet process being used and analyzing these systems, finds that also there is following problem in they:
1, equipment volume is excessive, does not reach portable requirement;
2, equipment does not move real time operating system, has increased software complexity, and is unfavorable for later stage software maintenance and upgrading.
Embedded system refers to application-centered, based on computer technology, but the software and hardware cutting, to the dedicated computer system of strict demands such as function, reliability, cost, volume and power consumption.Simply, the application software and the hardware platform that are exactly system are an integral body, collaborative work.Because characteristics such as embedded system have flexible facility, high performance-price ratio, can embed, stable and real-time, thus the market potential of embedded technology huge, have a extensive future.Embedded system has become consumer electronics and the common developing direction of communication product, is widely used in the various aspects of our daily life at present.And along with the development of microelectric technique, the processor technology has obtained significant progress, and a series of performance height that have been born, memory capacity are big, the integrated abundant and interface of module extends out processor easily.Such as, 32 S3C6410 arm processors that Samsung produces, cheap, save cost, and abundant peripheral hardware resource is arranged, good man-machine interface is provided; The TMS320C6747 low-power consumption dsp processor that Texas Instruments produces is convenient to realize the data processing, is applicable to Industry Control.
As seen from the above analysis, develop a stylobate and possessed theoretical foundation and application prospect in the portable Barkhausen noise tension gauge of embedded system, also significant.
Summary of the invention
The purpose of this utility model provides a kind of portable Barkhausen noise tension gauge based on embedded system, and it not only can satisfy portable requirement, and user interface is good, and is easy to operate.
For achieving the above object, the technical scheme that the utility model is taked is: based on the portable Barkhausen noise tension gauge of embedded system, comprise: magnetizing apparatus, signal picker, signal processing circuit, controller, host computer, human-computer interaction module, and the power module that working power is provided for each part mentioned above;
The steering order that human-computer interaction module sends exports controller to after host computer is handled, controller according to steering order control signal treatment circuit to magnetizing apparatus output drive signal, to magnetize ferromagnetic material to be measured;
Signal picker acquisition noise signal, and noise signal transferred to controller through signal processing circuit, controller is handled the noise signal that collects, and the signal after will handling then transfers to host computer, and then exports human-computer interaction module to.
When using, magnetizing apparatus in the utility model and signal picker can be placed on the ferromagnetic material to be measured, to ferromagnetic material stress application to be measured, the tester sends test command by human-computer interaction module, ferromagnetic material produces noise signal under the magnetization of magnetizing apparatus, detected by signal picker, signal picker is converted to voltage signal with detected noise signal, transfer to controller by signal processing circuit and carry out processing such as filtering and eigenwert extraction, and then the eigenwert after will handling transfers to host computer, carry out the drafting of real-time curve, and realize the demonstration of real-time curve by human-computer interaction module.
The above-mentioned signal processing circuit of the utility model comprises the discharge circuit that is connected between signal picker and the controller, and is connected signal source circuit and power amplifier between controller and the magnetizing apparatus.Discharge circuit adopts prior art, and it is used for realization to hardware filtering and the amplification of Barkhausen noise signal, is convenient to controller to collection and the processing of noise signal.Signal source circuit can produce the sinusoidal signal of certain frequency and peak value under the control of controller, after amplifying through power amplifier then, the output drive signal is given magnetizing apparatus, so that ferromagnetic material to be measured is magnetized.
Further, above-mentioned magnetizing apparatus is made up of ferromagnetic coil and ferrite yoke, and ferromagnetic coil is wrapped on the ferrite yoke.The output terminal of power amplifier namely connects ferromagnetic coil, with the output drive signal.
Further, above-mentioned power module comprises lithium battery and electric power management circuit, and lithium battery provides working power by electric power management circuit to detector.Lithium battery and electric power management circuit can adopt prior art.
On the basis of above-mentioned lithium battery and electric power management circuit, the utility model also has ac power input end, and is connected the power-switching circuit between ac power input end and the electric power management circuit; AC power provides working power by power-switching circuit and electric power management circuit to detector successively.Ac power input end can adopt the plug form, and power supply changeover device can adopt prior art.
Preferably, host computer described in the utility model adopts arm processor, and controller adopts DSP to realize that the relevant treatment function can be in conjunction with existing techniques in realizing.
The beneficial effects of the utility model are:
1, develop based on embedded system, in conjunction with ARM technology and DSP technology, designed friendly human-computer interaction interface, and data Collection ﹠ Processing System, satisfy the every index of system;
2, this device can be realized contactless continuous detecting, gathers in real time, handles, preserves and demonstration Barkhausen noise signal, can detect the stress distribution of ferrimagnet more accurately.
Description of drawings
Figure 1 shows that a kind of example structure schematic block diagram of the present utility model;
Figure 2 shows that the stress stress model synoptic diagram when the utility model is used.
Embodiment
For content of the present utility model is become apparent more, be described further below in conjunction with the drawings and specific embodiments.
In conjunction with illustrated in figures 1 and 2, portable Barkhausen noise tension gauge based on embedded system of the present utility model, comprise: magnetizing apparatus, signal picker, signal processing circuit, controller, host computer, human-computer interaction module, and the power module that working power is provided for each part mentioned above; Wherein host computer can adopt arm processor, and controller adopts DSP to realize that the relevant treatment function can be in conjunction with existing techniques in realizing; Human-computer interaction module is existing touch-screen.
Signal picker is a coil, and magnetizing apparatus is made up of ferromagnetic coil 1 and ferrite yoke 2, and ferromagnetic coil 1 is wrapped on the ferrite yoke 2.Signal processing circuit comprises the discharge circuit that is connected between signal picker coil and the controller, and is connected signal source circuit and power amplifier between controller and the magnetizing apparatus, and the output terminal of power amplifier connects the ferromagnetic coil of magnetizing apparatus.Discharge circuit is used for realization to hardware filtering and the amplification of Barkhausen noise signal, is convenient to controller to collection and the processing of noise signal.Signal source circuit can produce frequency under the control of controller be 10Hz, peak-to-peak value is the sinusoidal signal of 1V, and after amplifying through power amplification circuit, output voltage frequency is 10Hz, peak-to-peak value is that the pumping signal of 10V is given magnetizing apparatus, so that ferromagnetic material to be measured is magnetized.
When using, magnetizing apparatus of the present utility model and signal picker 3 can be placed on the ferromagnetic material 4 to be measured, to ferromagnetic material 4 stress applications to be measured, the tester sends test command by human-computer interaction module, ferromagnetic material produces noise signal under the magnetization of pressure F and magnetizing apparatus, obtained by the signal picker detection, signal picker is converted to voltage signal with detected noise signal, transfer to controller by signal processing circuit and carry out processing such as filtering and eigenwert extraction, and then the eigenwert after will handling transfers to host computer, carry out the drafting of real-time curve, and realize the demonstration of real-time curve by human-computer interaction module.
Power module is the dual power supply pattern in the utility model, and a kind of power supply mode is lithium battery power supply, and another kind of power supply mode is for exchanging the input power supply; Lithium battery provides working power by electric power management circuit to detector, and can select 24V, battery capacity is the lithium battery power supply of 4Ah, can guarantee that like this system works is more than 3 hours.The 24V direct supply is converted to ± 15V through power management module, uses for signal source circuit, power amplification circuit and operational amplification circuit; 15V changes out 5V again, and then changes out 3.3V, and ARM system and dsp system are used the voltage of 5V and 3.3V respectively.Exchange input power supply situation and realize that by ac power input end and power-switching circuit ac power input end can adopt the plug form, AC power provides working power by power-switching circuit and electric power management circuit to detector successively.
Concrete case study on implementation only is preferable case study on implementation of the present utility model described in the utility model, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be as technology category of the present utility model.
Claims (6)
1. based on the portable Barkhausen noise tension gauge of embedded system, it is characterized in that, it comprises: magnetizing apparatus, signal picker, signal processing circuit, controller, host computer, human-computer interaction module, and the power module that working power is provided for each part mentioned above;
The steering order that human-computer interaction module sends exports controller to after host computer is handled, controller according to steering order control signal treatment circuit to magnetizing apparatus output drive signal, to magnetize ferromagnetic material to be measured;
Signal picker acquisition noise signal, and noise signal transferred to controller through signal processing circuit, controller is handled the noise signal that collects, and the signal after will handling then transfers to host computer, and then exports human-computer interaction module to.
2. the portable Barkhausen noise tension gauge based on embedded system according to claim 1, it is characterized in that, described signal processing circuit comprises the discharge circuit that is connected between signal picker and the controller, and is connected signal source circuit and power amplifier between controller and the magnetizing apparatus.
3. the portable Barkhausen noise tension gauge based on embedded system according to claim 1 is characterized in that magnetizing apparatus is made up of ferromagnetic coil and ferrite yoke, and ferromagnetic coil is wrapped on the ferrite yoke.
4. the portable Barkhausen noise tension gauge based on embedded system according to claim 1 is characterized in that, the described host computer of institute adopts arm processor, and controller adopts DSP to realize.
5. according to each described portable Barkhausen noise tension gauge based on embedded system of claim 1 to 4, it is characterized in that, power module comprises lithium battery and electric power management circuit, and lithium battery provides working power by electric power management circuit to detector.
6. the portable Barkhausen noise tension gauge based on embedded system according to claim 5, it is characterized in that, described power module also comprises ac power input end, and is connected the power-switching circuit between ac power input end and the electric power management circuit; AC power provides working power by power-switching circuit and electric power management circuit to detector successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056988 CN203203962U (en) | 2013-02-01 | 2013-02-01 | Portable Barkhausen noise stress detector based on embedded system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320056988 CN203203962U (en) | 2013-02-01 | 2013-02-01 | Portable Barkhausen noise stress detector based on embedded system |
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| CN203203962U true CN203203962U (en) | 2013-09-18 |
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| CN 201320056988 Expired - Fee Related CN203203962U (en) | 2013-02-01 | 2013-02-01 | Portable Barkhausen noise stress detector based on embedded system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670483A (en) * | 2021-08-25 | 2021-11-19 | 南昌航空大学 | Method and device for measuring dynamic Barkhausen noise stress |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113670483A (en) * | 2021-08-25 | 2021-11-19 | 南昌航空大学 | Method and device for measuring dynamic Barkhausen noise stress |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140201 |