CN101672823B - System and method for the online detection of magnetic materials - Google Patents
System and method for the online detection of magnetic materials Download PDFInfo
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- CN101672823B CN101672823B CN2009101804659A CN200910180465A CN101672823B CN 101672823 B CN101672823 B CN 101672823B CN 2009101804659 A CN2009101804659 A CN 2009101804659A CN 200910180465 A CN200910180465 A CN 200910180465A CN 101672823 B CN101672823 B CN 101672823B
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- 239000000696 magnetic material Substances 0.000 title claims abstract description 91
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004458 analytical method Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 7
- 238000001914 filtration Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000003321 amplification Effects 0.000 description 7
- 230000005389 magnetism Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000010998 test method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 1
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- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention provides a system and a method for the online detection of soft magnetic material and hard magnetic material on printed material, and the system and method are used to separately monitor the attachment of soft magnetic and hard magnetic materials and automatically adjust the attachment of magnetic materials according to the detection information of the online detection or give an alarm. The online detection system of the magnetic materials of the invention comprises a detection unit, an analytical unit and a feedback unit, wherein the detection unit is set to separately perform online detection to the magnetic properties of the hard magnetic material and the soft magnetic material, the analytical unit is set to contrast the online detection result output by the detection unit with the preset scope of threshold value, and the feedback unit is set to control the actuator to increase or reduce the attachment of magnetic materials on printed material according to the analysis result output by the analytical unit and control the alarm/display unit to alarm or display.
Description
Technical field
The present invention relates to a kind of detection system and method, be specifically related to a kind of on-line detecting system and method for magnetic material.
Background technology
Magnetic material is to be applied in recent years such as being used for one of false proof main material on the products such as securities.Tradition is used for false proof magnetic material and is mostly hard magnetic material, i.e. the permanent magnetism functional material.Along with continually developing of new technology, soft magnetic material also is applied in the product as anti-fake material.The remanent magnetism and the coercive force of soft magnetic material are low, are easy to magnetization and demagnetization, therefore when being magnetized by external magnetic field, just embody magnetic characteristic usually, and magnetic characteristic also disappeared after external magnetic field disappeared.The above-mentioned characteristic that soft magnetic material had makes its detection method be different from the detection method of hard magnetic material.For the novel anti-fake product that combines to have adopted soft magnetism and two kinds of magnetic materials of Hard Magnetic, traditional checkout equipment that is used for the Hard Magnetic system can not satisfy it and detect needs.
In addition, in the production run of product additional magnetic material, because control or systematic error, the adhesion amount of said magnetic material on stock may depart from standard value.Therefore, need a kind of system and method that can be in process of production the adhesion amount of soft magnetic material and hard magnetic material be detected simultaneously.
Summary of the invention
One object of the present invention is to provide a kind of detection system of can be simultaneously the soft magnetic material on the stock and hard magnetic material being carried out online detection, to monitor the adhesion amount of said soft magnetic material and said hard magnetic material respectively.
Another object of the present invention is to provide a kind of system that can adjust the magnetic material adhesion amount according to the detection information of said online detection automatically.
Another purpose of the present invention is to provide a kind of detection method of can be simultaneously the soft magnetic material on the stock and hard magnetic material being carried out online detection respectively.
A further object of the present invention is to provide a kind of method that can adjust the magnetic material adhesion amount according to the detection information of said online detection automatically.
According to an aspect of the present invention, a kind of magnetic material on-line detecting system is provided, has comprised: detecting unit is set to simultaneously the magnetic property of hard magnetic material in the said magnetic material and the magnetic property of soft magnetic material carried out online detection respectively; And analytic unit, be set to the online testing result and the pre-set threshold scope of said detecting unit output are compared, whether exceed said pre-set threshold scope to judge it.
Said on-line detecting system can further comprise feedback unit, and said feedback unit is according to the analysis result control executing mechanism of said analytic unit output, to increase or to reduce the adhesion amount of said magnetic material on stock.
According to another aspect of the present invention, a kind of magnetic material online test method is provided, has comprised: simultaneously the magnetic property of hard magnetic material in the said magnetic material and the magnetic property of soft magnetic material have been carried out online detection respectively; And the online testing result and the pre-set threshold scope of said detecting unit output compared, whether exceed said pre-set threshold scope to judge it.
Said online test method can further comprise the judged result control executing mechanism that obtains according to said determining step, to increase or to reduce the adhesion amount of said magnetic material on stock.
Description of drawings
Fig. 1 is the synoptic diagram according to the magnetic material on-line detecting system of an embodiment of the application;
Fig. 2 shows the variation according to waveform after a signal process embodiment of the application, that sensor obtains amplification and the Filtering Processing;
Fig. 3 show according to an embodiment of the application, by the variation of filtering and amplifying signal through signal waveform after the analog to digital conversion; And
Fig. 4 shows according to a digital signal waveform specific embodiment of the application, through being obtained after the analog to digital conversion.
Embodiment
Fig. 1 shows the magnetic material on-line detecting system 100 according to an embodiment of the application.On-line detecting system 100 comprises detecting unit 10 and analytic unit 20.Detecting unit 10 is used for simultaneously the magnetic property of hard magnetic material and the magnetic property of soft magnetic material being detected.Analytic unit 20 is used for the online detection data of detecting unit 10 outputs are classified, stored and analyze.
Detecting unit 10 comprises the first sensor 10a and the second sensor 10b, to realize the measurement respectively of hard magnetic material and soft magnetic material.The said first sensor 10a and the second sensor 10b can be made up of one or more sensors respectively.According to the application's a specific embodiment, first sensor 10a is the coil type magnetic sensor that is used to measure the magnetism of hard magnetic material ability.When coil type magnetic sensor during near hard magnetic material, decide rate according to electromagnetic induction, the magnetic field that hard magnetic material produces will make through the magnetic flux change of cell winding, thereby in coil, produce induction current, electric current will produce electric potential difference through resistance.Can the magnetic signal that hard magnetic material produced be converted into electric signal thus, through measuring the data that said electric signal can obtain being used to characterize the magnetism of hard magnetic material ability.The second sensor 10b is for can measure the Mageneto-sensitive type sensor of magnetism of hard magnetic material ability and soft magnetic material magnetic property simultaneously.Owing to comprise permanent magnet in the Mageneto-sensitive type sensor, this permanent magnet will produce magnetization to soft magnetic material when measuring, thus the Mageneto-sensitive type sensor can measure the magnetic field that hard magnetic material produces simultaneously and be magnetized after the magnetic field that produces of soft magnetic material.Comprise the compound (like indium antimonide) of resistance value in the Mageneto-sensitive type sensor with change of magnetic field strength; When the Mageneto-sensitive type sensor is measured near magnetic material; The variation of pressure drop promptly reflects the magnetic property of magnetic material on the sensor, thereby can convert the magnetic signal that magnetic material produced into electric signal through the variation of measuring pressure drop.What the Mageneto-sensitive type sensor was exported is the data that characterize magnetism of hard magnetic material ability and soft magnetic material magnetic property simultaneously.Therefore, the output data that deducts the coil type magnetic sensor with the output data of Mageneto-sensitive type sensor is the data that characterize the soft magnetic material magnetic property.According to the application's a specific embodiment, the contact mode is adopted in the measurement of said sensor.
According to the application's a embodiment, on-line detecting system 100 can further comprise signal processing unit 40.Signal processing unit 40 is used for the electric signal of first sensor 10a and second sensor 10b output is handled, and is convenient to the signal discerning and handle to be converted into analytic unit 20.According to the application's a specific embodiment, signal processing unit 40 comprises amplification module and filtration module.Amplification module is used for the less electric signal of sensor output is carried out processing and amplifying.According to the application's a specific embodiment, the electric signal after the amplification can reach the volt level.In addition, can there be undesired signal, particularly high-frequency interferencing signal in various degree among the result that sensor measurement obtains.Filtration module is used for the electric signal of amplification module output is carried out filtering, with filtering interference signals.Fig. 2 shows the variation through signal waveform after amplification and the Filtering Processing.Signal processing unit 40 can further comprise analog-to-digital conversion module, is transferred into analog-to-digital conversion module through the filtered signal of filtration module, with the digital signal that analog signal conversion is handled for ease of analytic unit 20.Fig. 3 shows the variation through signal waveform after the analog to digital conversion.
Fig. 4 is digital signal waveform synoptic diagram signal processing unit 40 output, that a magnetic code series is measured.Because the measured waveform of hard magnetic material and soft magnetic material has similar form; Therefore no longer distinguish among this paper and describe; It will be understood by those skilled in the art that digital signal waveform shown in Figure 4 can be used for representing hard magnetic material measured waveform, soft magnetic material measured waveform or comprise the hybrid waveform of above-mentioned two kinds of materials.As shown in the figure, the corresponding magnetic code of a square-wave cycle in the signal waveform, the order setting that said in this example magnetic code is arranged in order according to a high sign indicating number (being that signal intensity is high) and a low sign indicating number (signal intensity is low).In application, said magnetic code also can perhaps otherwise be provided with according to a wide sign indicating number (the magnetic code width is big) and the narrow yard order setting that (magnetic code narrow width) is arranged in order.In rectangular signal shown in Figure 4, the duration of signal wave crest is represented by t, t multiply by the equipment speed of a motor vehicle can obtain the magnetic code width data.The forward amplitude of square wave is the signal voltage measured value, is used to characterize the magnetic signal intensity of magnetic code.Analytic unit 20 extracts the parameters such as sequential value, width value and range value of each magnetic code in the magnetic code series from digital signal waveform shown in signal processing unit 40 outputs; And the parameters of obtaining compared with the pre-set threshold scope respectively, and output analysis result.
Referring to Fig. 1, on-line detecting system 100 can further comprise feedback unit 30.Feedback unit 30 is used for being used for according to the analysis result control of analytic unit 20 outputs the topworks 50 of printing magnetic material on stock.On-line detecting system 100 also can further comprise warning/display unit 60.Feedback unit 30 can be reported to the police and/or the display analysis result according to the analysis result control warning/display unit 60 of analytic unit 20 outputs.Whether operating personnel can be in normal range according to the amount that institute's data presented is understood current printed magnetic material.
According to the application's a embodiment, be set with corresponding threshold range respectively to above-mentioned parameters (like sequential value, width value and the range value of magnetic code).When any one parameter exceeded its predetermined threshold value scope, feedback unit 30 was operated control executing mechanism 50 or control warning/display unit 60 accordingly.Said pre-set threshold scope comprises the first threshold scope and second threshold range respectively.Analytic unit 20 respectively each item is detected its corresponding first threshold scope of data and second threshold range compares, and when the detection data were in the first threshold scope, it is normal that expression detects data; When the detection data exceed the first threshold scope but are in second threshold range; Expression detects data exception but is in the adjustable extent, and this moment, feedback unit 30 was according to output control executing mechanism 50 increases as a result of analytic unit 20 or the amount of the material that deperms; When detecting data and exceed second threshold range, the expression product quality is no longer qualified, and feedback unit 30 was controlled warning/display unit 60 according to the output result of analytic unit 20 and reported to the police this moment.Below be that example is illustrated above process with the range value parameter of signal shown in Figure 4.
In the example depicted in fig. 4, the first threshold scope of high sign indicating number range value is set to 100 ± 10, and second threshold range is set to 100 ± 20.Visible by Fig. 4, the range value of whole high coded signals all is positioned at second threshold range, promptly greater than 80, less than 120, and the range value of the high coded signal of part is lower than 90, has promptly exceeded first threshold.This moment, feedback unit 30 increased control executing mechanism 50 amount of magnetic material of corresponding magnetic code.Correspondingly, if exist the range value of high coded signal to exceed the situation of second threshold range, feedback unit 30 will be controlled warning/display unit 60 and report to the police.Other parameters can be analysed and compared according to similar method.
Another embodiment of the application relates to a kind of detection method of simultaneously soft magnetic material and hard magnetic material being carried out online detection.Said online test method may further comprise the steps:
Step S10 carries out online detection respectively to the magnetic property of hard magnetic material in the said magnetic material and the magnetic property of soft magnetic material simultaneously;
Step S20 detects numerical value from the detection extracting data each item that obtains, and said detection numerical value and pre-set threshold scope is compared, and judges whether detect numerical value exceeds the preset threshold scope, and the output judged result; And
Step S30 carries out handled according to the judged result that step S20 obtains, and said processing comprises increases or reduce the adhesion amount of said magnetic material on stock, perhaps reports to the police.
Said online test method can further comprise the signal Processing step before step S20, promptly handle detecting the detection signal that obtains among the step S10.Said processing can comprise signal amplification, signal filtering and analog to digital conversion.
The concrete operations of said each step of online test method can referring in the preceding text about the description of on-line detecting system 100, repeat no more at this.
More than through embodiment and accompanying drawing the application is described; But the application is not limited to above-mentioned embodiment and accompanying drawing; Those skilled in the art are to be understood that; Under the situation of the technological thought that does not break away from the application, can also carry out various modification and equivalent transformation, these modification and conversion are included in the protection domain that the application's claims are limited equally.
Claims (8)
1. adjust the system of magnetic material adhesion amount automatically according to the online detection information of magnetic material for one kind, comprising:
Detecting unit is set to simultaneously the magnetic property of hard magnetic material in the said magnetic material and the magnetic property of soft magnetic material carried out online detection respectively;
Analytic unit; Be set to the online testing result and the pre-set threshold scope of said detecting unit output are compared, whether exceed said pre-set threshold scope to judge it, wherein; Said pre-set threshold scope comprises the first threshold scope and second threshold range; Said analytic unit compares said online testing result and said first threshold scope and said second threshold range respectively, in the time of in said online testing result is in said first threshold scope, representes that said online testing result is normal; When said online testing result exceeds said first threshold scope but is in said second threshold range; Represent that said online testing result is unusual but be in adjustable scope that when said online testing result exceeded said second threshold range, the expression product quality was defective; And
Feedback unit; When said online testing result exceeds said first threshold scope but is in said second threshold range; Said feedback unit is according to the analysis result control executing mechanism of said analytic unit output, to increase or to reduce the adhesion amount of said magnetic material on stock.
2. the system of claim 1, wherein said detecting unit comprises the first sensor and second sensor, to realize the measurement respectively of said hard magnetic material and said soft magnetic material.
3. system as claimed in claim 2, wherein said first sensor is the coil type magnetic sensor.
4. system as claimed in claim 2, wherein said second sensor is the Mageneto-sensitive type sensor.
5. the system of claim 1 further comprises warning/display unit, and said feedback unit is controlled said warning/display unit to report to the police and/or to show according to the analysis result of said analytic unit output.
6. like any described system among the claim 1-5, further comprise signal processing unit, said signal processing unit converts the testing result of said detecting unit output into signal that said analytic unit can be analyzed.
7. adjust the method for magnetic material adhesion amount automatically according to the online detection information of magnetic material for one kind, comprising:
Use detecting unit simultaneously the magnetic property of hard magnetic material in the said magnetic material and the magnetic property of soft magnetic material to be carried out online detection respectively;
The online testing result and the pre-set threshold scope of said detecting unit output are compared; To judge whether it exceeds said pre-set threshold scope; Wherein, said pre-set threshold scope comprises the first threshold scope and second threshold range, respectively said online testing result and said first threshold scope and said second threshold range is compared; In the time of in said online testing result is in said first threshold scope; Represent that said online testing result is normal, when said online testing result exceeds said first threshold scope but is in said second threshold range, represent that said online testing result is unusual but be in adjustable scope; When said online testing result exceeded said second threshold range, the expression product quality was defective; And
When said online testing result exceeded said first threshold scope but is in said second threshold range, control executing mechanism was to increase or to reduce the adhesion amount of said magnetic material on stock.
8. method as claimed in claim 7 comprises that further the judged result that obtains according to said determining step reports to the police and/or show.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101804659A CN101672823B (en) | 2009-10-15 | 2009-10-15 | System and method for the online detection of magnetic materials |
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| CN2009101804659A CN101672823B (en) | 2009-10-15 | 2009-10-15 | System and method for the online detection of magnetic materials |
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| CN101672823A CN101672823A (en) | 2010-03-17 |
| CN101672823B true CN101672823B (en) | 2012-07-25 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101950005A (en) * | 2010-09-10 | 2011-01-19 | 上海交通大学 | Magnetic performance tester for annular soft magnetic material |
| CN102682511B (en) * | 2011-03-11 | 2014-09-03 | 中钞特种防伪科技有限公司 | Anti-counterfeiting detection equipment and method |
| CN103293492B (en) * | 2012-02-27 | 2016-06-01 | 国民技术股份有限公司 | A kind of magnetic signal detection device and method |
| JP2016206070A (en) * | 2015-04-24 | 2016-12-08 | 日本電産サンキョー株式会社 | Magnetic sensor device |
| CN110108781B (en) * | 2019-05-15 | 2023-11-10 | 中钞印制技术研究院有限公司 | Mobile device, article authentication method, apparatus and system thereof, and storage medium |
| CN112072889B (en) * | 2020-09-04 | 2022-02-11 | 珠海格力电器股份有限公司 | Permanent magnet linear motor and permanent magnet magnetic performance online detection device and method thereof |
| CN114187700A (en) * | 2021-10-25 | 2022-03-15 | 中钞特种防伪科技有限公司 | Magnetic sensor and detection method using the same |
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| CN2596460Y (en) * | 2002-12-24 | 2003-12-31 | 中国印钞造币总公司 | Sensor for measuring negotiable securities |
| CN1588423A (en) * | 2004-07-13 | 2005-03-02 | 上海印钞厂 | Non contact type magnetic characteristic detecting method and its device for full banknote |
| CN1959745A (en) * | 2005-11-04 | 2007-05-09 | 中国印钞造币总公司 | Magnetic induction device, and finance bills detection system of using the device |
| CN101009027A (en) * | 2006-01-25 | 2007-08-01 | 中国印钞造币总公司 | Sensor and detecting device for measuring magnetic materials of negotiable securities |
| CN101315678A (en) * | 2007-06-01 | 2008-12-03 | 中国印钞造币总公司 | Composite anti-counterfeit element |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2596460Y (en) * | 2002-12-24 | 2003-12-31 | 中国印钞造币总公司 | Sensor for measuring negotiable securities |
| CN1588423A (en) * | 2004-07-13 | 2005-03-02 | 上海印钞厂 | Non contact type magnetic characteristic detecting method and its device for full banknote |
| CN1959745A (en) * | 2005-11-04 | 2007-05-09 | 中国印钞造币总公司 | Magnetic induction device, and finance bills detection system of using the device |
| CN101009027A (en) * | 2006-01-25 | 2007-08-01 | 中国印钞造币总公司 | Sensor and detecting device for measuring magnetic materials of negotiable securities |
| CN101315678A (en) * | 2007-06-01 | 2008-12-03 | 中国印钞造币总公司 | Composite anti-counterfeit element |
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