CN101231266A - Detection system for electromagnetic nondestructive test probe - Google Patents
Detection system for electromagnetic nondestructive test probe Download PDFInfo
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- CN101231266A CN101231266A CNA2008100572753A CN200810057275A CN101231266A CN 101231266 A CN101231266 A CN 101231266A CN A2008100572753 A CNA2008100572753 A CN A2008100572753A CN 200810057275 A CN200810057275 A CN 200810057275A CN 101231266 A CN101231266 A CN 101231266A
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Abstract
The invention discloses an examining system of an electromagnetic nondestructive examination probe, which comprises examining equipment and signal processing equipment, wherein, the examining equipment sends each characteristic parameter thereof to the signal processing equipment, receives parameters which are interrelated with the examining equipment being processed by the signal processing equipment, and amends each characteristic parameter of the examining equipment according to the interrelated parameters; the signal processing equipment sends corresponding running parameter to the examining equipment, sets the examining mode of the examining equipment, starts the interrelated parts of the signal processing equipment according to the examining mode, adjusts and converts the examining signals received from the examining equipment, and analyses and processes the converted signals. Multiple electromagnetic nondestructive examining modes such as examination of eddy current in any waveform, the magnetic leakage examination of the ferromagnetism part after field excitation and the magnetic memory examination of ferromagnetism part, etc. are realized respectively through the running mode of each part of the examining equipment and the signal processing equipment of the invention.
Description
Technical field
The present invention relates to a kind of detection system of electromagnetic nondestructive test probe, relate in particular to a kind of detection system with electromagnetic nondestructive test probe of EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory measuring ability.
Background technology
Along with the requirement of quality monitoring is more and more stricter, Dynamic Non-Destruction Measurement is also had higher requirement.Dynamic Non-Destruction Measurement energy reflection department, industry, area even national whole industrial technology level, can bring tangible benefit, in industrially developed country, Non-Destructive Testing has become and design, material, manufacturing (technology) four big gordian techniquies arranged side by side, and the progress of many relevant industries such as machinery, petrochemical industry, Aeronautics and Astronautics, automobile, pressure vessel, railway, road, nuclear industry and technical field is played an important role.
EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detect the Non-Destructive Testing mode that is based on electromagnetic field.Traditional eddy current method all has problems aspect detecting two at large-area scanning and deep zone defect, and for the large tracts of land EDDY CURRENT of high resolution, the array eddy current probe has more advantage than traditional mechanical scan probe.Magnetic Flux Leakage Inspecting is to the detection on surface of the ferrimagnet after the magnetization and nearly surface, forms stray field at fault location, just can the research and analysis defective by the detection to stray field.Magnetic memory detection technology is based on the irreversible effect of ferromagnetic magnetoelastic effect and stray field, and the efficient ways that the ferromagnetic metal parts are carried out early diagnosis can fast detecting goes out the position of defective.EDDY CURRENT is based on the dynamic electromagnetic field detection mode; Magnetic Flux Leakage Inspecting adopts direct current, interchange or permanent magnet to the regional excitation of survey, and utilizes static magnetic field or dynamic magnetic field detection mode; The magnetic memory then utilizes static electromagnetic field as source of magnetization.In these several electromagnetic nondestructive system modes, the accurate measurement of electromagnetic field is become key.Electromagnetic nondestructive testings such as EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection are also constantly improving and development, but currently generally these several technology are independently treated, development respectively, these several detection techniques are not organically united the feasible double increase of user cost of adopting these several technology.
Summary of the invention
For solving problem and the defective that exists in above-mentioned, the invention provides a kind of electromagnetic nondestructive system.
The present invention is achieved by the following technical solutions:
Involved in the present invention a kind of electromagnetic nondestructive system comprises:
Checkout equipment, each characterisitic parameter that sends this equipment are to signal handling equipment, and the received signal treatment facility processing back parameter relevant with checkout equipment, and according to correlation parameter the characterisitic parameter of this checkout equipment are revised;
Signal handling equipment, send the corresponding work parameter to checkout equipment, and set its detection mode, and start the associated components of this signal handling equipment according to this detection mode, then the detection signal that receives is nursed one's health and changed, and the signal after will changing analyzes and handles, and the signal after will handling outputs to print unit or storage unit.
Described checkout equipment also comprises: storage unit, the characterisitic parameter of each each parts of storage checkout equipment; Control module, the operation of control store unit and multipath conversion unit realizes communicating by letter between checkout equipment and the signal handling equipment, and each parameter is transmitted mutually; Huge magnetic sensing unit, comprise X to the huge magnetic sensing unit in magnetic field and Y to the huge magnetic sensing unit in magnetic field, and the detection signal of each array element output is transferred to the multipath conversion unit; The multipath conversion unit is transferred to signal handling equipment with the detection signal of each array element of receiving through prime amplifier.
Described signal handling equipment comprises: the signal condition unit, receive the detection signal of each array element output of huge magnetic sensing unit in the described checkout equipment, and this signal nursed one's health, make the signal after the conditioning be suitable for the required working range of converting unit, output to converting unit then; Converting unit receives the detection signal after the conditioning unit is nursed one's health, and this detection signal is carried out the conversion of analog to digital, and the analog signal transmission after will changing then is to field programmable gate array; Storage unit will store detection signal with central processing unit by FPGA (Field ProgrammableGate Array, field programmable gate array), and provide data processing required work space.
The beneficial effect of technical scheme provided by the invention is:
By detection system under the condition that does not change sensing probe, adopt the probe of the huge magnetic sensor array of two-dimensional magnetic field can carry out eddy current, leakage field and magnetic memory detection, to unite based on the Dynamic Non-Destruction Measurement of dynamic electromagnetic field and static electromagnetic field, can carry out the collaborative detection of multiple mode, improve the reliability that detects.
Description of drawings
Fig. 1 is the detection system structural drawing.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing:
Present embodiment provides a kind of electromagnetic nondestructive system.
Referring to Fig. 1, this system handles the measuring ability of realizing different electromagnetic nondestructive such as EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection system by analog and digital signal, and, realize integrated detections such as EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection by to dynamically carrying out sensing with static magnetic field.Mainly comprise: checkout equipment and signal handling equipment, wherein checkout equipment comprises: huge magnetic sensing unit, control module, storage unit and multipath conversion unit.Described huge magnetic sensing unit comprises: X to the huge magnetic sensor array 3 in magnetic field, and is transferred to multipath conversion unit 5 with this signal to the huge magnetic sensor array in magnetic field 2 and Y, and is transferred to signal handling equipment through prime amplifier 9.Described checkout equipment also comprises control module, by of the operation of CPLD control module 6 control FLASH storage unit 4 with multipath conversion unit 5, and the parameter between checkout equipment and the signal handling equipment transmitted mutually, wherein control module also connects the detection that photoelectric encoder 1 is used for carrying out the checkout equipment position, realizes the location of checkout equipment.
Signal handling equipment: comprise signal condition unit, converting unit and storage unit.When the detection signal of described checkout equipment outputs to signal handling equipment, be transferred to after at first nursing one's health by 11 pairs of these signals in signal condition unit carry out analog-digital conversion in the A/D converter 13 in the converting unit after, be transferred to FPGA14 (Field Programmable Gate Array, field programmable gate array) handle in, and the signal after will handling is stored by FLASH storer 17 and SDRAM storer 15 by central processing unit 16 or print 19 through communication interface 18 by printer.Described FPGA14 is undertaken corresponding signal to be transferred to power amplification unit 10 after the digital-to-analog conversion by D/A converter 12 according to detection mode, outputs to magnetic field bias coil 7 and field coil 8 in the checkout equipment then.
Described electromagnetic nondestructive system carries out EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection mode and is achieved by the following technical solution:
EDDY CURRENT: CPU16 is according to detecting the excitation waveform that requires to set EDDY CURRENT, comprise sine wave, pulsating wave or other random waveforms, and waveform outputed in the FPGA14 after discrete, FPGA14 outputs in the D/A converter 12 according to certain time sequence and frequency according to the Wave data after discrete, after amplifying through power amplification unit 10, the waveform of D/A converter 12 outputs outputs to the magnetic field bias coil 7 in the checkout equipment respectively, drive coil 8, the magnetic field that bias coil 7 produces is used to provide the work magnetic field of y to the huge magnetic sensor array 3 in magnetic field, and drive coil 8 is used to produce the required excitation field of EDDY CURRENT; Y is used to receive eddy current testing signal to the huge magnetic sensor array 3 in magnetic field, the detection signal that receives outputs to signal condition unit 11 by multipath conversion unit 5 after prime amplifier 9 amplifies, make it to be fit to the working range of A/D converter 13, eddy current testing signal after the conditioning carries out the conversion of analog to digital by A/D converter 13, digital signal after the conversion outputs in the FPGA14, carry out digital filtering, output in the CPU16 after the signal analysis and processing, received signal after CPU16 will handle shows with print unit 19 and shows, or output to other storeies by communication interface 18, network etc., the EDDY CURRENT of realization random waveform.
Magnetic Flux Leakage Inspecting: ferromagnetism parts to be measured are through direct current, detect behind interchange or the permanent magnet magnetization, x is used to receive the Magnetic Flux Leakage Inspecting signal to the huge magnetic sensor array 2 in magnetic field in the probe, the detection signal that receives outputs to signal condition unit 11 by multipath conversion unit 5 after prime amplifier 9 amplifies, make it to be fit to the working range of A/D converter 13, detection signal after the conditioning carries out the conversion of analog to digital by A/D converter 13, simulating signal after the conversion outputs in the FPGA14, carry out digital filtering, output in the CPU16 after the Digital Signal Analysis and Processing, received signal after CPU16 will handle shows with print unit 19 and shows, or output to other storeies by communication interface 18, networks etc. are realized Magnetic Flux Leakage Inspecting.
The magnetic memory detects: the ferromagnetism parts to be measured after the magnetization of terrestrial magnetic field are detected, x is used to receive magnetic memory detecting signal to the huge magnetic sensor array 2 in magnetic field in the probe, the detection signal that receives outputs to signal condition unit 11 by multipath conversion unit 5 after prime amplifier 9 amplifies, make it to be fit to the working range of A/D converter 13, detection signal after the conditioning carries out the conversion of analog to digital by A/D converter 13, simulating signal after the conversion outputs in the FPGA14, carry out digital filtering, output in the CPU16 after the Digital Signal Analysis and Processing, received signal after CPU16 will handle shows with print unit 19 and shows, or output to other storeies by communication interface 18, networks etc. realize that the magnetic memory detects.
Present embodiment provides a kind of multiple electromagnetic nondestructive functions such as EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection that can realize in the detection system of one, has not only simplified the detection system design, and has reduced the cost that detects.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. the detection system of an electromagnetic nondestructive test probe is characterized in that, described system comprises:
Checkout equipment, each characterisitic parameter that sends this equipment are to signal handling equipment, and the received signal treatment facility processing back parameter relevant with checkout equipment, and according to the correlation parameter that receives the characterisitic parameter of this checkout equipment are revised;
Signal handling equipment requires to send the relevant detection mode to checkout equipment according to detecting, and receive the characterisitic parameter of each parts of checkout equipment, and the associated components that starts according to detection mode detects.
2. the detection system of electromagnetic nondestructive test probe according to claim 1 is characterized in that, wherein said checkout equipment also comprises:
Storage unit, the characterisitic parameter of each parts of storage checkout equipment;
Control module, the operation of control store unit and multipath conversion unit, and the parameter between checkout equipment and the signal handling equipment transmitted mutually;
Huge magnetic sensing unit, comprise X to the huge magnetic sensor array in magnetic field and Y to the huge magnetic sensor array in magnetic field, and this huge magnetic sensing unit also outputs to the multipath conversion unit according to the detection mode of setting with the detection signal of each array element;
The multipath conversion unit outputs to signal handling equipment with the detection signal that receives through prime amplifier.
3. the detection system of electromagnetic nondestructive test probe according to claim 1 is characterized in that, described signal handling equipment comprises:
The signal condition unit receives the detection signal of huge magnetic sensing unit output in the described checkout equipment, and this signal is nursed one's health, and makes the signal after the conditioning be suitable for the required working range of converting unit, outputs to converting unit then;
Converting unit receives the detection signal after the conditioning unit is nursed one's health, and this detection signal is carried out the conversion of analog to digital, and the analog signal transmission after will changing then is to field programmable gate array;
Storage unit will store by the signal of field programmable gate array and central processing unit transmission and provides signal Processing required storage space.
4. the detection system of electromagnetic nondestructive test probe according to claim 1 is characterized in that, the mode of described detection comprises: EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detect.
5. the detection system of electromagnetic nondestructive test probe according to claim 4, it is characterized in that, when described this detection system is the EDDY CURRENT mode, at first set the excitation waveform of EDDY CURRENT according to detecting requirement by central processing unit in the signal handling equipment, and output to field programmable gate array after this waveform dispersed and carry out the digital-to-analog conversion, carry out outputing to checkout equipment after the power amplification through power amplification unit then.
6. the detection system of electromagnetic nondestructive test probe according to claim 4, it is characterized in that, when this detection system is carried out EDDY CURRENT, Magnetic Flux Leakage Inspecting and magnetic memory detection, also comprise: by huge magnetic sensor array element in the checkout equipment detection signal that receives is transferred to signal condition unit in the signal handling equipment, and carries out being transferred to programmable gate array after the analog-digital conversion through converter.
7. according to the detection system of claim 3 or 6 described electromagnetic nondestructive test probes, it is characterized in that, described field programmable gate array the simulating signal that receives is carried out filtering, signal analysis and handle after be transferred to central processing unit, show then or store.
8. according to the detection system of the described electromagnetic nondestructive test probe of claim 1-7, it is characterized in that this system can collect EDDY CURRENT, Magnetic Flux Leakage Inspecting and the incorporate detection system of magnetic memory measuring ability.
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| CNA2008100572753A CN101231266A (en) | 2008-01-31 | 2008-01-31 | Detection system for electromagnetic nondestructive test probe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995432A (en) * | 2010-11-04 | 2011-03-30 | 重庆大学 | Hall element differential array based ferromagnetic construction member surface crack detector |
| CN101696954B (en) * | 2009-10-29 | 2011-05-04 | 北京交通大学 | Electromagnetic tomography nondestructive inspection device for severe fault of rail and method thereof |
| CN102182933A (en) * | 2011-03-22 | 2011-09-14 | 江南大学 | Nondestructive detection system and method for pulsed magnetic flux leakage defects and stresses |
| CN102435668A (en) * | 2011-08-31 | 2012-05-02 | 重庆大学 | Array ferromagnetic member surface defect detector based on leakage magnetic field double component |
| CN103675094A (en) * | 2013-12-16 | 2014-03-26 | 无锡乐尔科技有限公司 | Non-destructive testing device |
| CN104820015A (en) * | 2015-05-08 | 2015-08-05 | 北京华航无线电测量研究所 | Detection system of metal surface defect and detection method thereof |
| WO2019047397A1 (en) * | 2017-09-11 | 2019-03-14 | 清华大学 | Dynamic magnetic detection probe and electromagnetic array control method |
-
2008
- 2008-01-31 CN CNA2008100572753A patent/CN101231266A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101696954B (en) * | 2009-10-29 | 2011-05-04 | 北京交通大学 | Electromagnetic tomography nondestructive inspection device for severe fault of rail and method thereof |
| CN101995432A (en) * | 2010-11-04 | 2011-03-30 | 重庆大学 | Hall element differential array based ferromagnetic construction member surface crack detector |
| CN102182933A (en) * | 2011-03-22 | 2011-09-14 | 江南大学 | Nondestructive detection system and method for pulsed magnetic flux leakage defects and stresses |
| CN102435668A (en) * | 2011-08-31 | 2012-05-02 | 重庆大学 | Array ferromagnetic member surface defect detector based on leakage magnetic field double component |
| CN102435668B (en) * | 2011-08-31 | 2015-05-27 | 重庆大学 | Array ferromagnetic member surface defect detector based on leakage magnetic field double component |
| CN103675094A (en) * | 2013-12-16 | 2014-03-26 | 无锡乐尔科技有限公司 | Non-destructive testing device |
| CN104820015A (en) * | 2015-05-08 | 2015-08-05 | 北京华航无线电测量研究所 | Detection system of metal surface defect and detection method thereof |
| CN104820015B (en) * | 2015-05-08 | 2018-05-15 | 北京华航无线电测量研究所 | A kind of cracks of metal surface detecting system and its detection method |
| WO2019047397A1 (en) * | 2017-09-11 | 2019-03-14 | 清华大学 | Dynamic magnetic detection probe and electromagnetic array control method |
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