CN202502072U - Double-channel computer eddy current detector - Google Patents
Double-channel computer eddy current detector Download PDFInfo
- Publication number
- CN202502072U CN202502072U CN2012201432598U CN201220143259U CN202502072U CN 202502072 U CN202502072 U CN 202502072U CN 2012201432598 U CN2012201432598 U CN 2012201432598U CN 201220143259 U CN201220143259 U CN 201220143259U CN 202502072 U CN202502072 U CN 202502072U
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- eddy current
- data acquisition
- signal wire
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- industrial control
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Abstract
The utility model relates to a double-channel computer eddy current detector, comprising an oscillating unit, two data collecting modules, two filter amplifiers and an industrial control computer, wherein each data collecting module is provided with an output interface and an input interface; the oscillating unit is connected with the input interfaces of the data collecting modules through signal wires; the filter amplifiers are connected with the output interfaces through the signal wires; the filter amplifiers are connected with a high-speed AD (Analogue-to-Digital) collecting card through the signal wires; and the high-speed AD collecting card is accessed to an input port of the industrial control computer through the signal wire. The double-channel computer eddy current detector disclosed by the utility model provides various display modes to select and applies a full-digital design technology; and the detector does not need to be repeatedly adjusted when a production specification of a product is changed.
Description
Technical field
The utility model relates to a kind of checkout equipment, is specifically related to a kind of binary channels computer eddy current testing instrument.
Background technology
At present; Online or the off-line flaw detection of all kinds of non-ferrous metals, ferrous metal pipe, rod, line, silk, section bar is more and more general; Though there is checkout equipment on the market; But it is also few to have multi-functional, practical, high performance instrument, to the defective of metal tube, rod, line, silk, section bar, not high like the sensitivity of defects detection such as surface crack, stowing, slag inclusion and opening crackle; How to produce modular mode operation, plurality of display modes is provided, and the point-and-shoot equipment of using totally digitilized designing technique has become people's expectation.
Summary of the invention
The utility model has overcome the deficiency of prior art; A kind of binary channels computer eddy current testing instrument has been proposed; Said detector passes through magnetic test coil with the alternating current of a certain frequency; When seized test specimen during near coil, the metallurgy of the physical dimension of test specimen, conductance and magnetoconductivity and test specimen and mechanical defect will cause the impedance variations of magnetic test coil.Detecting instrument amplifies the electric signal process of the variation generation of magnetic test coil impedance and conversion rear drive warning or display device, finally detects defective sample.
The technical scheme of the utility model is: a kind of binary channels computer eddy current testing instrument; Comprise an oscillating unit, two data acquisition modules, two filter amplifiers and an industrial control computer; Said data acquisition module is provided with an output interface and an input interface; Said oscillating unit links to each other with the input interface of data acquisition module through signal wire; Said filter amplifier is connected with said output interface through signal wire, and said filter amplifier is connected with a high-speed AD acquisition card through signal wire, and said high-speed AD acquisition cartoon is crossed signal wire and inserted said industrial control computer.
Said data acquisition module is provided with a measuring bridge, and said measuring bridge is provided with measuring sonde.
The utlity model has following beneficial effect:
The utility model adopts Windows Chinese operation interface, and the modular mode operation provides plurality of display modes selective, and uses totally digitilized designing technique, need not to readjust instrument when changing the production specification, realizes the point-and-shoot operation.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the theory structure synoptic diagram of the utility model.
Fig. 2 is the data acquisition unit structural representation of the utility model.
Among the figure, 1, data acquisition module; 2, filter amplifier; 3, high-speed AD acquisition card; 4, display; 5, industrial control computer; 6, oscillating unit; 7, sampling pulse generator; 8, XY decomposing module; 9, prime amplifier; 10, input interface; 11, power amplifier; 12, measuring bridge; 13, measuring sonde; 14, output interface.
Embodiment:
Referring to illustrated in figures 1 and 2; The utility model comprises an oscillating unit 6, two data acquisition modules 1, two filter amplifiers 2 and industrial control computers 5; Said data acquisition module 1 is provided with an output interface 14 and an input interface 10; Said oscillating unit 6 links to each other with the input interface 10 of data acquisition module 1 through signal wire; Said filter amplifier 2 is connected with said output interface 14 through signal wire, and said filter amplifier 2 is connected with a high-speed AD acquisition card 3 through signal wire, and said high-speed AD acquisition card 3 inserts the input port of said industrial control computer 5 through signal wire.Data acquisition module 1 comprises measuring bridge 12 and XY decomposing module 8, and said measuring bridge 12 is provided with measuring sonde 13.Said oscillating unit 6 is connected with measuring bridge 12 with power amplifier 11 through input interface 10; The output terminal of power amplifier 11 is connecting an input end of measuring bridge 12; Said measuring bridge 12 is connected with XY decomposing module 8 through prime amplifier 9; The output terminal of said measuring bridge 12 is connecting the input end of prime amplifier 9 through signal wire, and said XY decomposing module 8 connects output interfaces 14.Said input interface 10 is connecting the input end of sampling pulse generator 7.Its principle of work is:
It is that the adjustable two-way of 100Hz～1MHz is sinusoidal wave that oscillating unit 6 produces frequency; Give the input interface 10 of a circuit-switched data acquisition module 1 and the input interface 10 of another circuit-switched data acquisition module 1 respectively; After the input interface 10 of data acquisition module 1 receives oscillator signal, divide two-way to transmit, the one tunnel gives power amplifier 11; As the driving source that drives measuring sonde 13, measuring sonde 13 constitutes the brachium pontis of measuring bridge 12.When measuring sonde 13 test samples; The sample change in physical changes the vortex field of driving source induction on sample thereupon; The result makes measuring sonde 13 original impedance variations, thereby has destroyed the balance of former alternating current bridge, obtains comprising the complex voltage U of detection signal; This signal is sent into XY decomposing module 8 and is decomposed behind prime amplifier 9.The bridge balance circuit is to be used for offsetting the uneven initial complex voltage U of alternating current bridge, and input interface 10 outputs two road orthogonal sinusoidal waves are delivered to sampling pulse generator 7, produce mutually orthogonal sampling pulse and supply XY decomposing module 8 to use.The data that two paths of data acquisition module 1 is gathered are sent ultra high speed A card 3 after filter amplifier 2 amplifies, handled by 5 pairs of measuring-signals of industrial control computer, directly on display 4, show measurement result, and output a control signal to the handled unit.The utility model adopts Windows Chinese operation interface, and the modular mode operation provides plurality of display modes selective, and uses totally digitilized designing technique, need not to readjust instrument when changing the production specification, realizes the point-and-shoot operation.
Claims (2)
1. binary channels computer eddy current testing instrument; It is characterized in that: comprise an oscillating unit, two data acquisition modules, two filter amplifiers and an industrial control computer; Said data acquisition module is provided with an output interface and an input interface; Said oscillating unit links to each other with the input interface of data acquisition module through signal wire; Said filter amplifier is connected with said output interface through signal wire, and said filter amplifier is connected with a high-speed AD acquisition card through signal wire, and said high-speed AD acquisition cartoon is crossed signal wire and inserted said industrial control computer.
2. binary channels computer eddy current testing instrument according to claim 1 is characterized in that: said data acquisition module is provided with a measuring bridge, and said measuring bridge is provided with measuring sonde.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201432598U CN202502072U (en) | 2012-04-05 | 2012-04-05 | Double-channel computer eddy current detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201432598U CN202502072U (en) | 2012-04-05 | 2012-04-05 | Double-channel computer eddy current detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502072U true CN202502072U (en) | 2012-10-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201432598U Expired - Fee Related CN202502072U (en) | 2012-04-05 | 2012-04-05 | Double-channel computer eddy current detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822967A (en) * | 2014-03-18 | 2014-05-28 | 江苏理工学院 | Automatic dual-exciting-coil conductor defect flaw detection device and method |
-
2012
- 2012-04-05 CN CN2012201432598U patent/CN202502072U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822967A (en) * | 2014-03-18 | 2014-05-28 | 江苏理工学院 | Automatic dual-exciting-coil conductor defect flaw detection device and method |
| CN103822967B (en) * | 2014-03-18 | 2016-09-14 | 江苏理工学院 | Double excitation coil-conductor defect automatic flaw detection device and method of detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121024 Termination date: 20140405 |