CN102692448A - Multidirectional high-sensitivity electromagnetic defect detection sensing device - Google Patents
Multidirectional high-sensitivity electromagnetic defect detection sensing device Download PDFInfo
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- CN102692448A CN102692448A CN2012102178955A CN201210217895A CN102692448A CN 102692448 A CN102692448 A CN 102692448A CN 2012102178955 A CN2012102178955 A CN 2012102178955A CN 201210217895 A CN201210217895 A CN 201210217895A CN 102692448 A CN102692448 A CN 102692448A
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Abstract
The invention discloses a multidirectional high-sensitivity electromagnetic defect detection sensing device which comprises an excitation circuit, a sensing system, a detecting circuit, a signal demodulating circuit and an upper computer, wherein the sensing system comprises an excitation coil and a plurality of detection coils arranged in the exciting coil; the excitation coil and the excitation circuit are connected through a circuit; the excitation circuit supplies an excitation signal to the excitation coil; a corresponding input port of the detecting circuit is correspondingly connected with the plurality of detection coils of the sensing system through data wires; an input end of the signal demodulating circuit is connected with an output end of the detection circuit through a data wire; and an input end of the upper computer is connected with an output end of the signal demodulating circuit through a data wire. The multidirectional high-sensitivity electromagnetic defect detection sensing device can effectively collect information of a detected metal component, so as to enhance the detection sensitivity and the detection precision of the detection coils, and further pause detection is not needed, so that the real-time performance of data detection is improved, and the power consumption and the cost are low.
Description
Technical field
The present invention relates to a kind of electromagnetic sensing sniffer, particularly a kind of multi-faceted highly sensitive electromagnetic test sensing device.
Background technology
Along with the modern industry fast development; Industry spot uses the occasion of metal material member more and more, but because metal surface of causing in the hardware processing technology or the inner microtrauma evil that exists promptly influence little factors such as crackle, makes in the actual industrial scene; Extraneous factor is (like corrosion; Brute force etc.) continuous invasion and attack make these also inapparent originally microtrauma evils phenomenons such as fusion can occur, make and injure aggravation, finally tend to cause more serious consequence.Therefore need carry out testing to the hardware that industry spot is used, use member or structure, avoid causing industrial accident so that upgrade in time.
But the electromagnetic test sensing arrangement that uses at present is the single collection of single excitation mostly, and in use sampled data is too single, often can't comprehensively carry out effective and reasonable evaluation to defect parameters; Even some sensor-based system adopts the many drainage patterns of multiple activation, but, caused the not high design defect of entire system sensitivity because sensing arrangement self makes acquired signal too faint.In addition, because the interference of factors such as the microstructure of the metal firmware that industry spot is used, conductance, magnetoconductivity tends to cause the erroneous judgement to testing result, make test result inaccurate.
Summary of the invention
The purpose of this invention is to provide a kind of multi-faceted highly sensitive electromagnetic test sensing device; Can carry out effective information acquisition to tested hardware; Strengthened the detection sensitivity and the degree of accuracy of magnetic test coil, and, need not to shut down and detect; Improved the real-time that detects data, and power consumption and cost are low.
In order to realize above purpose, the present invention realizes through following technical scheme:
A kind of multi-faceted highly sensitive electromagnetic test sensing device comprises:
Exciting circuit;
Sensor-based system, it comprises drive coil and is arranged on several magnetic test coils in the drive coil; Said drive coil links to each other through circuit with described exciting circuit, and this exciting circuit is that drive coil provides pumping signal;
Testing circuit, its corresponding input port with link to each other through data line is corresponding with several magnetic test coils of described sensor-based system respectively;
Signal demodulating circuit, its input end links to each other through data line with the output terminal of described testing circuit;
Host computer, its input end links to each other through data line with the output terminal of described signal demodulating circuit.
The number of turns scope of the drive coil of described sensor-based system is 3 ~ 800, and the diameter range of this coiling is 0.1mm ~ 10mm.
Described sensor-based system comprises eight magnetic test coils, and said eight magnetic test coils evenly are arranged on the inside of drive coil; The scope of the number of turns of each magnetic test coil is 3 ~ 200, and the diameter range of this coiling is 0.1mm ~ 10mm.
The diameter of the coiling of described eight magnetic test coils and number of turns, winding mode and coiling density are all identical.
The present invention compared with prior art has the following advantages:
1, can carry out effective information acquisition to tested hardware;
2, the detection sensitivity and the degree of accuracy of magnetic test coil have been strengthened;
3, need not to shut down detection, improved the real-time that detects data;
4, power consumption and cost are low.
Description of drawings
Fig. 1 is the systematic schematic diagram of a kind of multi-faceted highly sensitive electromagnetic test sensing device of the present invention.
Embodiment
Below in conjunction with accompanying drawing,, the present invention is done further elaboration through specifying a preferable specific embodiment.
As shown in Figure 1, a kind of multi-faceted highly sensitive electromagnetic test sensing device comprises: exciting circuit 1, sensor-based system 5, testing circuit 2, signal demodulating circuit 3, host computer 4.
As shown in Figure 1, wherein, sensor-based system 5 comprises drive coil 51 and is arranged on several magnetic test coils 52 in the drive coil 51; Wherein, drive coil 51 and exciting circuit 1 link to each other through circuit, and this exciting circuit 1 provides pumping signal for drive coil 51; Several magnetic test coils 52 evenly are arranged on the inside of drive coil 51.In the present embodiment, the number of turns scope of drive coil 51 is 3 ~ 800, and the diameter range of this coiling is 0.1mm ~ 10mm; The scope of the number of turns of each magnetic test coil 52 is 3 ~ 200; The diameter range of this coiling is 0.1mm ~ 10mm; The diameter of the coiling of each magnetic test coil 52 and number of turns, winding mode and coiling density are all identical; And require the resistance value of magnetic test coil 52 also in full accord in the winding process, so that reduce to greatest extent because the sampled data error that technology causes.
As shown in Figure 1; The corresponding input port of testing circuit 2 with link to each other through data line is corresponding with several magnetic test coils 52 of sensor-based system 5 respectively; Guaranteed that promptly each magnetic test coil 52 all has independently Data Detection passage; So that prevent interference between signals and reduce the signal conveys time difference, the detection degree of accuracy and the sensitivity that detect have been increased greatly.In the present embodiment, the number of magnetic test coil 52 is 8, and therefore, each quadrant that can guarantee to detect in the thing field (2 dimensional region) has two groups of Monitoring Data to improve accuracy in detection and sensitivity.
As shown in Figure 1, the input end of signal demodulating circuit 3 links to each other through data line with the output terminal of testing circuit 2; The input end of host computer 4 links to each other through data line with the output terminal of signal demodulating circuit 3.In the present embodiment, signal demodulating circuit 3 is selected the demodulator circuit that high performance little process chip forms (for example FPGA, chips such as DSP) for use; Host computer 4 then selects for use general computing machine to get final product.
When using, obtain flawless sampled data through intact sheet metal earlier, and store the memory block of host computer 4 into, and with the calibration value of this data message as the detection voltage data.
When beginning to detect, tested hardware or sheet material are placed under the electromagnetic test sensing device of the present invention, make sensor-based system 5 perpendicular on tested hardware or the sheet material; The pumping signal of the excitation frequency that exciting circuit 1 output is specific; Be applied on the drive coil 51, simultaneously, control drive coil 51 8 inner magnetic test coils 52 carry out input successively; And the sampled voltage signal at magnetic test coil 51 two ends is delivered to signal demodulating circuit 3 carry out data demodulates; Take out the voltage distributed intelligence of corresponding frequency band, and this information is delivered to host computer 4, after evaluating with the calibration value contrast of the voltage data of sampling early stage; Can extrapolate the parameters such as position, size, shape of tested metal plate defect, thereby accomplish evaluation the electromagnetic property parameter distribution of tested hardware or sheet material.When the more electromagnetic property parameter of needs collection, then only need pumping signal through exciting circuit 1 another specific incentives frequency of output, as long as when keeping 8 to detect magnetic test coils 52 and detect successively, this excitation frequency keeps stable and gets final product.Therefore, need not to shut down and detect, improved greatly and detected the real-time of data, and only need consume few power, use cost is lower.
In sum; A kind of multi-faceted highly sensitive electromagnetic test sensing device of the present invention can carry out effective information acquisition to tested hardware, has strengthened the detection sensitivity and the degree of accuracy of magnetic test coil; And; Need not shut down to detect, improved the real-time that detects data, and power consumption and cost are low.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (4)
1. a multi-faceted highly sensitive electromagnetic test sensing device is characterized in that, comprises:
Exciting circuit (1);
Sensor-based system (5), it comprises drive coil (51) and is arranged on several magnetic test coils (52) in the drive coil (51); Said drive coil (51) links to each other through circuit with described exciting circuit (1), and this exciting circuit (1) provides pumping signal for drive coil (51);
Testing circuit (2), its corresponding input port with link to each other through data line is corresponding with several magnetic test coils (52) of described sensor-based system (5) respectively;
Signal demodulating circuit (3), its input end links to each other through data line with the output terminal of described testing circuit (2);
Host computer (4), its input end links to each other through data line with the output terminal of described signal demodulating circuit (3).
2. multi-faceted highly sensitive electromagnetic test sensing device according to claim 1 is characterized in that the number of turns scope of the drive coil (51) of described sensor-based system (5) is 3 ~ 800, and the diameter range of this coiling is 0.1mm ~ 10mm.
3. multi-faceted highly sensitive electromagnetic test sensing device according to claim 2; It is characterized in that; Described sensor-based system (5) comprises eight magnetic test coils (52), and said eight magnetic test coils (52) evenly are arranged on the inside of drive coil (51); The scope of the number of turns of each magnetic test coil (52) is 3 ~ 200, and the diameter range of this coiling is 0.1mm ~ 10mm.
4. multi-faceted highly sensitive electromagnetic test sensing device according to claim 3 is characterized in that the diameter of the coiling of described eight magnetic test coils (52) and number of turns, winding mode and coiling density are all identical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102178955A CN102692448A (en) | 2012-06-28 | 2012-06-28 | Multidirectional high-sensitivity electromagnetic defect detection sensing device |
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| CN2012102178955A CN102692448A (en) | 2012-06-28 | 2012-06-28 | Multidirectional high-sensitivity electromagnetic defect detection sensing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103231726A (en) * | 2013-02-27 | 2013-08-07 | 常州兆能电子科技有限公司 | Rail damage testing device and method based on three-way electromagnetism differential sensor |
| CN103412039A (en) * | 2013-09-04 | 2013-11-27 | 上海海事大学 | Electromagnetic fault detection sensing device in multi-frequency multiple drive models |
| CN103528495A (en) * | 2012-07-05 | 2014-01-22 | 上海海事大学 | Human body metal implant detection device and method based on electromagnetic sensors |
| CN109856642A (en) * | 2018-12-20 | 2019-06-07 | 上海海事大学 | A kind of rotated three dimensional laser measurement system and its plane reference method |
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| CN201464422U (en) * | 2009-07-20 | 2010-05-12 | 范军 | Pulse eddy current flaw detection probe |
| CN202614724U (en) * | 2012-06-28 | 2012-12-19 | 上海海事大学 | Multidirectional high-sensitivity electromagnetic flaw detection sensing device |
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| CN201464422U (en) * | 2009-07-20 | 2010-05-12 | 范军 | Pulse eddy current flaw detection probe |
| CN202614724U (en) * | 2012-06-28 | 2012-12-19 | 上海海事大学 | Multidirectional high-sensitivity electromagnetic flaw detection sensing device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103528495A (en) * | 2012-07-05 | 2014-01-22 | 上海海事大学 | Human body metal implant detection device and method based on electromagnetic sensors |
| CN103528495B (en) * | 2012-07-05 | 2016-03-23 | 上海海事大学 | A kind of human metalloproteinase implant pick-up unit based on electromagnetic sensor and method |
| CN103231726A (en) * | 2013-02-27 | 2013-08-07 | 常州兆能电子科技有限公司 | Rail damage testing device and method based on three-way electromagnetism differential sensor |
| CN103412039A (en) * | 2013-09-04 | 2013-11-27 | 上海海事大学 | Electromagnetic fault detection sensing device in multi-frequency multiple drive models |
| CN109856642A (en) * | 2018-12-20 | 2019-06-07 | 上海海事大学 | A kind of rotated three dimensional laser measurement system and its plane reference method |
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Application publication date: 20120926 |