CN202676665U - Multi-excitation high-sensitivity electromagnetism flaw detection sensing device - Google Patents
Multi-excitation high-sensitivity electromagnetism flaw detection sensing device Download PDFInfo
- Publication number
- CN202676665U CN202676665U CN 201220377475 CN201220377475U CN202676665U CN 202676665 U CN202676665 U CN 202676665U CN 201220377475 CN201220377475 CN 201220377475 CN 201220377475 U CN201220377475 U CN 201220377475U CN 202676665 U CN202676665 U CN 202676665U
- Authority
- CN
- China
- Prior art keywords
- circuit
- coil
- detection
- sensing device
- sensitivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses a multi-excitation high-sensitivity electromagnetism flaw detection sensing device. The multi-excitation high-sensitivity electromagnetism flaw detection sensing device comprises an exciting circuit, a sensing system, a detection circuit, a signal processing circuit, and an upper computer, wherein the sensing system is connected with the excitation circuit and comprises a plurality of exciting coils which are distributed in ring shape, the detection circuit comprises a plurality of detection coils which are in one-to-one correspondence with the plurality of exciting coils, each detection coil is arranged under a corresponding exciting coil, all mutually corresponding detection coils and exciting coils overlap to form a plurality of excitation detection units, the signal processing circuit is connected with the detection circuit through a circuit, and the upper computer is connected with the signal processing circuit through a data line. The multi-excitation high-sensitivity electromagnetism flaw detection sensing device can effectively improve sensitivity of a central position of a space to be detected, is richer and more substantial in detecting data, further, increases the number of sampling signals, and can well detect electromagnetism segment information of various directions of the space to be detected, thereby achieving the advantages of low power consumption, low cost, high sensitivity, fast and real-time detection and no-halt detection.
Description
Technical field
The utility model relates to a kind of sensing fault detection system that can be used for hardware or the detection of sheet material parameter information, the particularly highly sensitive electromagnetic test sensing device of a kind of multiple activation.
Background technology
Along with the modern industry fast development, industry spot uses the occasion of metal material member more and more, but because the metal surface of causing in the hardware processing technology or the inner microtrauma evil that exists namely affect the little factors such as crackle, so that in the actual industrial scene, extraneous factor is (such as corrosion, brute force etc.) continuous invasion and attack are so that the phenomenons such as these originally also inapparent microtrauma evil meeting appearance fusions so that injury aggravates, finally tend to cause more serious consequence.Therefore need to carry out testing to the hardware that industry spot is used, use member or structure in order to upgrade in time, avoid causing industrial accident.
The electromagnetic test sensing arrangement that uses at present mostly is greatly the single collection of single excitation, 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 because sensing arrangement self so that collection signal is too faint, has caused the not high design defect of entire system sensitivity.In addition because the interference of the 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, so that test result is inaccurate.
The utility model content
The purpose of this utility model provides the highly sensitive electromagnetic test sensing device of a kind of multiple activation, can effectively strengthen the sensitivity in detected space centre, and it is more abundant, substantial to detect data; And, increased sampled signal quantity, can well detect the electromagnetism segment information of a plurality of directions of detected space, thereby, realized low-power consumption, low cost, highly sensitive, the quick advantage that detects in real time, do not shut down detection.
In order to realize above purpose, the utility model is achieved through the following technical solutions:
The highly sensitive electromagnetic test sensing device of a kind of multiple activation comprises:
Exciting circuit;
Sensor-based system, described sensor-based system links to each other with exciting circuit, and it comprises several drive coils, and described several drive coils evenly distribute and are round;
Testing circuit, described testing circuit comprises and several drive coils several magnetic test coils one to one, described magnetic test coil is arranged under the corresponding drive coil, and magnetic test coil and the drive coil stack of correspondence consist of several excitation detecting units mutually for all;
Signal processing circuit, described signal processing circuit links to each other with testing circuit by circuit;
Host computer, described host computer links to each other with signal processing circuit by data line.
Described host computer is computing machine.
The number of described drive coil and magnetic test coil is 8.
The number of turns of described drive coil and magnetic test coil, coiling density and coil impedance value are identical.
The number of turns scope of described drive coil and magnetic test coil is 3 ~ 200.
The circle diameter scope of described drive coil and magnetic test coil is 0.1mm ~ 10mm.
The utility model compared with prior art has the following advantages:
1, eight drive coils evenly distribute, and each excitation field can effectively strengthen the sensitivity of detected space centre in the stack of detected space center, has overcome the low shortcoming of center sensitivity that single magnetic field produces;
2, the cyclic transformation pumping signal can be so that every kind of pumping signal all to some extent excitation eight positions detects data and more enriches, enriches clockwise;
3, can be fine detected space be encouraged and detects with the equally distributed 8 groups of excitation detecting units of sensing inside configuration, increased sampled signal quantity, can well detect the electromagnetism segment information of a plurality of directions of detected space.
Description of drawings
Fig. 1 is the system chart of the highly sensitive electromagnetic test sensing device of a kind of multiple activation of the utility model;
Fig. 2 is the spatial distribution map of the highly sensitive electromagnetic test sensing device of a kind of multiple activation of the utility model;
Fig. 3 is the structural drawing of the excitation detecting unit of the highly sensitive electromagnetic test sensing device of a kind of multiple activation of the utility model.
Embodiment
Below in conjunction with accompanying drawing, by describing a better specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, the highly sensitive electromagnetic test sensing device of a kind of multiple activation comprises: exciting circuit 1, sensor-based system 2, testing circuit 3, signal processing circuit 4, host computer 5.
Wherein, as shown in Figures 2 and 3, sensor-based system 2 links to each other with exciting circuit 1, and it comprises several drive coils 21, and several drive coils 21 are round and evenly distribute; Testing circuit 3 comprises and several drive coils 21 several magnetic test coils 31 one to one, and magnetic test coil 31 is arranged on corresponding drive coil 21 times, all mutually corresponding magnetic test coils 31 consist of several excitation detecting units with drive coil 21 stacks.In the present embodiment, the number of drive coil 21 and magnetic test coil 31 is 8, be evenly distributed in 4 quadrants on plane, each excitation detecting unit that is formed by two drive coils 21 and magnetic test coil 31 of each quadrant, have two groups of Monitoring Data to improve accuracy in detection and sensitivity with each quadrant that guarantees to detect in the thing field (2 dimensional region), the process specification of excitation and detection coil is identical simultaneously.The number of turns of drive coil 21 and magnetic test coil 31, coiling density and coil impedance value are identical, and the scope of number of turns is respectively 3 ~ 200, and the scope of the circle diameter of coiling is 0.1mm ~ 10mm.
As shown in Figure 1, signal processing circuit 4 links to each other with testing circuit 3 by circuit, and each magnetic test coil 31 has independently Data Detection passage, carries the time difference in order to prevent the interference between the stop signal and reduce signal; Host computer 5 links to each other with signal processing circuit 4 by data line, and in the present embodiment, signal processing circuit 4 is selected the demodulator circuit that high performance micro-chip processor forms (for example FPGA, the chips such as DSP); Host computer 5 is computing machine.
When measuring, obtain the zero defect sampled data at intact sheet metal first, and store the memory block of host computer 5 into, with the calibration value of this information as the detection voltage data.Tested hardware or sheet material are placed under the electromagnetic test sensing device of the present utility model, make the excitation detecting unit perpendicular on tested hardware or the sheet material, each drive coil 21 in eight groups of excitation detecting units is applied each self-corresponding amplitude and specific, characteristic frequency, the pumping signal of particular phases, so that detected space is full of alternating magnetic field, control simultaneously eight corresponding magnetic test coils 31 and carry out successively input, and the sampled voltage signal at magnetic test coil 31 two ends is delivered to signal processing circuit 4 carry out the voltage signal conditioning, take out the voltage distributed intelligence of corresponding band, and this information is delivered to host computer 5 process and storage.
After finishing one group of Data Detection, the pumping signal of drive coil 21 in the excitation detecting unit is changed clockwise, namely, the moment of conversion, pumping signal in the drive coil 21 is converted to the counterclockwise pumping signal in the adjacent drive coil 21 of previous moment, magnetic test coil 31 is sampled again simultaneously, and the sampled signal in this moment that will obtain is delivered to the voltage distributed intelligence that corresponding band was processed and taken out to signal processing circuit 4, and this information is delivered to host computer 5 process and storage, conversion is totally 8 times successively, until each pumping signal all produced corresponding exciting field eight positions, can obtain 8 * 8 groups and detect data, thereby finishing Integratively comprehensively gathers, greatly enriched the data volume that detects, push away detected space electromagnetism segment information for the later stage host computer is anti-reliable abundant data message, the position that can better evaluate tested metal plate defect are provided, size, the parameters such as shape.
At last; host computer 5 is by the comparative analysis sampled data; carry out with the zero defect sampled data that gathers in advance; electromagnetic property parameters distribution to tested hardware or sheet material is evaluated; determine whether tested hardware or sheet material exist defective; do not need tested machinery to shut down and detect, avoided the unnecessary economic loss of industry spot, and accomplished real-time and detected information completely.
In sum, the highly sensitive electromagnetic test sensing device of a kind of multiple activation of the utility model can effectively strengthen the sensitivity in detected space centre, and it is more abundant, substantial to detect data; And, increased sampled signal quantity, can well detect the electromagnetism segment information of a plurality of directions of detected space, thereby, realized low-power consumption, low cost, highly sensitive, the quick advantage that detects in real time, do not shut down detection.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (6)
1. the highly sensitive electromagnetic test sensing device of multiple activation is characterized in that, comprises:
Exciting circuit (1);
Sensor-based system (2), described sensor-based system (2) links to each other with exciting circuit (1), and it comprises several drive coils (21), and described several drive coils (21) evenly distribute and are round;
Testing circuit (3), described testing circuit (3) comprises and several drive coils (21) several magnetic test coils (31) one to one, described magnetic test coil (31) is arranged under the corresponding drive coil (21), and magnetic test coil (31) and drive coil (21) stack of correspondence consist of several excitation detecting units mutually for all;
Signal processing circuit (4), described signal processing circuit (4) links to each other with testing circuit (3) by circuit;
Host computer (5), described host computer (5) links to each other with signal processing circuit (4) by data line.
2. the highly sensitive electromagnetic test sensing device of multiple activation as claimed in claim 1 is characterized in that, described host computer (5) is computing machine.
3. the highly sensitive electromagnetic test sensing device of multiple activation as claimed in claim 1 is characterized in that, the number of described drive coil (21) and magnetic test coil (31) is 8.
4. the highly sensitive electromagnetic test sensing device of multiple activation as claimed in claim 3 is characterized in that, the number of turns of described drive coil (21) and magnetic test coil (31), coiling density and coil impedance value are identical.
5. the highly sensitive electromagnetic test sensing device of multiple activation as claimed in claim 4 is characterized in that, the number of turns scope of described drive coil (21) and magnetic test coil (31) is 3 ~ 200.
6. the highly sensitive electromagnetic test sensing device of multiple activation as claimed in claim 5 is characterized in that, the circle diameter scope of described drive coil (21) and magnetic test coil (31) is 0.1mm ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377475 CN202676665U (en) | 2012-08-01 | 2012-08-01 | Multi-excitation high-sensitivity electromagnetism flaw detection sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377475 CN202676665U (en) | 2012-08-01 | 2012-08-01 | Multi-excitation high-sensitivity electromagnetism flaw detection sensing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676665U true CN202676665U (en) | 2013-01-16 |
Family
ID=47497564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220377475 Expired - Fee Related CN202676665U (en) | 2012-08-01 | 2012-08-01 | Multi-excitation high-sensitivity electromagnetism flaw detection sensing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676665U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768238A (en) * | 2012-08-01 | 2012-11-07 | 上海海事大学 | Multi-excitation high-sensitivity electromagnetic defect detection sensing device |
| 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 |
-
2012
- 2012-08-01 CN CN 201220377475 patent/CN202676665U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102768238A (en) * | 2012-08-01 | 2012-11-07 | 上海海事大学 | Multi-excitation high-sensitivity electromagnetic defect detection sensing device |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103499404B (en) | Ferromagnetic component alterante stress measurement mechanism and measuring method thereof | |
| CN104266579B (en) | A kind of extracting method of the signal characteristic quantity that ferromagnetic component is carried out Pulsed eddy current testing | |
| CN103412038B (en) | The portable ACFM detector of a kind of Based PC/104 embedded system | |
| CN103235036B (en) | Based on pick-up unit and the method for the differentiation inside and outside wall defect of electromagnetic detection signal | |
| CN102645486B (en) | Plane array type electromagnetic sensor with trapezoidal structure | |
| CN101281168A (en) | Method for changing energize mode to realize different mode electromagnetic detection | |
| CN103196989A (en) | ACFM different-angle crack detection system based on rotating magnetic field | |
| CN104155361A (en) | Pulse eddy electromagnetism nondestructive detection method based on probe with iron core coil | |
| CN103226129A (en) | Planar electromagnetic sensor based sheet damage detection apparatus and method thereof | |
| CN104913716A (en) | Single-layer conductive coating thickness and conductivity eddy current detection method and device | |
| CN103412039A (en) | Electromagnetic fault detection sensing device in multi-frequency multiple drive models | |
| WO2024036858A1 (en) | Eddy-current testing circuit, method and system, storage medium, and terminal | |
| CN201051089Y (en) | A real time multi-channel whirlpool and magnetic memory/magnetism leakage detection device | |
| CN201177614Y (en) | Multipurpose electromagnetical detection device based on same magnetic test coil | |
| CN105717191A (en) | Detection method and device for magnetic Barkhausen noise signal and magnetic parameters | |
| CN103196996A (en) | Eddy current detecting device used for performing metal defect detection and eddy current probe thereof | |
| CN103163211A (en) | Classification recognition method of defects at surface and sub-surface of metallic conductor | |
| CN202676665U (en) | Multi-excitation high-sensitivity electromagnetism flaw detection sensing device | |
| CN104833720A (en) | Method for single-coil electromagnetic resonance detection of metal pipeline damage | |
| CN102661994A (en) | Water-gas phase volume fraction detection device based on spiral inductance sensor and detection method thereof | |
| CN102692448A (en) | Multidirectional high-sensitivity electromagnetic defect detection sensing device | |
| CN101329408B (en) | Receiver of underground metal pipeline detector | |
| CN202614724U (en) | Multidirectional high-sensitivity electromagnetic flaw detection sensing device | |
| CN205538817U (en) | Detection apparatus for magnetism barkhausen noise signal and magnetism parameter | |
| CN105319444A (en) | Method for assessing conductivity uniformity of conductive material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Min Inventor after: Xu Xiaoyan Inventor after: Wang Peipei Inventor after: Wang Junwei Inventor before: He Min Inventor before: Wang Peipei Inventor before: Wang Junwei |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HE MIN WANG PEIPEI WANG JUNWEI TO: HE MIN XU XIAOYAN WANG PEIPEI WANG JUNWEI |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20150801 |
|
| EXPY | Termination of patent right or utility model |