CN104484936B - For detecting the coercitive magnetic sensor of Hard Magnetic and detection method and system - Google Patents
For detecting the coercitive magnetic sensor of Hard Magnetic and detection method and system Download PDFInfo
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Abstract
It is used to detect the coercitive magnetic sensor of Hard Magnetic and detection method and system based on it the embodiments of the invention provide a kind of.Wherein, magnetic sensor includes：Magnetic sensing component and the coil for being installed on the Magnetic sensing component back side；The Magnetic sensing component, for being detected respectively to the same area of detected object when the coil leads at least two electric currents of different sizes and exporting testing result respectively, during to be hard magnetic region in the region, the coercivity in the region is judged according to the testing result.Further, when being not powered on stream to coil, the above-mentioned zone of detected object is detected and testing result is exported, to judge whether above-mentioned zone is soft magnetic region.Compared with prior art, the present invention can will have different coercitive hard magnetic regions and soft magnetic region to distinguish, and be subsequently to judge that the true and false of marketable securities etc. provides the foundation.
Description
Technical field
The invention belongs to magnetic signal detection field, it is specifically related to a kind of by adjusting electric current that coil is passed through to detecting
The coercitive magnetic sensor of Hard Magnetic and detection method and system.
Background technology
Now high false proof valuable documents usch as banknotes, the Hard Magnetic set thereon has selected different magnetic materials, make its
Different hard magnetic regions has different coercivitys, to improve anti-counterfeit capability, and different its coercivity of bank note is different.Root
According to the physical principle of Hard Magnetic, different hard magnetic materials has different coercivitys, when the magnetic induction intensity of externally-applied magnetic field is more than used
During the coercivity of hard magnetic material, the phenomenon that the magnetic force direction of its hard magnetic material will be overturn.If the magnetic induction of externally-applied magnetic field
When intensity is less than the coercivity of hard magnetic material used, the magnetic force direction of its hard magnetic material is impossible to overturn.
For example, it is assumed that the magnetic induction intensity of externally-applied magnetic field is 500Gs, and there are 200Gs and 1000Gs respectively on tested bank note
Two coercitive false proof regions, it is clear that to 200Gsd region, its magnetic force direction is overturn, and 1000Gs region, its
Magnetic force direction is not overturn.If the magnetic induction intensity of externally-applied magnetic field is more than 1000Gs, then the magnetic force direction in two regions is all
Overturn, if the magnetic induction intensity of externally-applied magnetic field is less than 200Gs, then the magnetic force direction in two regions is not overturn.
Generally the magnetic sensor of detection valuable documents usch as banknotes all adds back of the body magnetic to constitute by Magnetic sensing component, and it carries on the back magnetic
It is the magnet steel of constant magnetic induction intensity, thus, it can not efficiently and accurately detect that coercivity is each not on the marketable securities such as bank note
Identical hard magnetic region, can only simply detect the presence of magnetic.That give fake producer with opportunity.
The content of the invention
In view of this, it is used to detect the coercitive magnetic sensor of Hard Magnetic, magnetic it is an object of the invention to provide one kind
Detection method and system, by adjusting the size of coil current, differentiation is made to the coercivity of the hard magnetic region on marketable securities.
Based on above-mentioned purpose, first aspect of the embodiment of the present invention provides a kind of for detecting that the coercitive magnetic of Hard Magnetic is passed
Sensor, including：
Magnetic sensing component and the coil for being installed on the Magnetic sensing component back side；
The Magnetic sensing component, for the coil lead at least two electric currents of different sizes when to detected object
The same area detected respectively and export testing result respectively, so as to the region be hard magnetic region when, according to described
Testing result judges the coercivity in the region.
It is preferred that,
The Magnetic sensing component, is additionally operable to judge whether the region is nonmagnetic region according to the testing result.
It is preferred that, the Magnetic sensing component is additionally operable to when the coil is not powered on stream, to described in detected object
Region detected and exports testing result, so as to the testing result that is not powered on according to the coil during stream and logical at least two big
Testing result during small different electric current judges whether the region is soft magnetic region.
It is preferred that, the Magnetic sensing component, testing result when being additionally operable to be not powered on stream according to the coil judges institute
Whether state region is hard magnetic region.
Another aspect of the present invention additionally provide it is a kind of be used to detecting the coercitive magnetic detection system of Hard Magnetic, including power supply,
Analysis of test results device and magnetic sensor as described above；
The power supply, for for the coil power supply；
The magnetic sensor, for the coil lead at least two electric currents of different sizes when to detected object
The same area is detected and exports testing result respectively respectively；
The Analysis of test results device, for being hard magnetic region in the region and determining two electricity of adjacent size
Flow corresponding testing result direction it is different when, determine the region Hard Magnetic coercivity the adjacent size two electricity
Flow between corresponding coercivity.
It is preferred that, the Analysis of test results device is additionally operable to lead at least two electricity of different sizes according to the coil
Testing result during stream, is determined when not detecting magnetic signal, and it is nonmagnetic region to confirm the region.
It is preferred that, the magnetic sensor is additionally operable to when the coil is not powered on stream, to the area of detected object
Detected and export testing result in domain；
The Analysis of test results device, sentences for testing result when according to logical at least two electric current of different sizes
Break to detect magnetic signal and according to be not powered on stream when testing result determine do not detect magnetic signal when, determine the area
Domain is soft magnetic region.
It is preferred that, the Analysis of test results device, for determining inspection according to testing result when being not powered on stream
When measuring magnetic signal, it is hard magnetic region to determine the region.
It is preferred that, the system also include controller, for control the power supply successively to the coil be passed through 0, I1,
I2......In electric current, wherein I1, I2......In increases successively, and the n is the integer more than 1.
It is preferred that, the controller be used for control the energy supply periodic successively to the coil be passed through 0, I1,
I2......In electric current.
It is preferred that, the controller is used to control in the power input sine wave, square wave, triangular wave, trapezoidal wave extremely
Few one kind.
Another aspect of the present invention, which additionally provides one kind, to be used to detect the coercitive Magnetic sensing methods of Hard Magnetic, including:
The same area of detected object is detected simultaneously respectively when coil passes to few two electric currents of different sizes
Testing result is exported respectively；The coil is arranged on the back side of the Magnetic sensing component；
The region be hard magnetic region and determine adjacent size the corresponding testing result of two electric currents direction not
Meanwhile, determine the coercivity of Hard Magnetic in the region between the corresponding coercivity of two electric currents of the adjacent size.
It is preferred that, the Magnetic sensing methods also include:When leading at least two electric currents of different sizes according to the coil
Testing result, determine when not detecting magnetic signal, it is nonmagnetic region to confirm the region.
It is preferred that, the Magnetic sensing methods also include:
When the coil is not powered on stream, the region of detected object is detected and testing result is exported；
Testing result when according to logical at least two electric current of different sizes, which is determined, detects magnetic signal and according to not
Testing result during galvanization is determined when not detecting magnetic signal, and it is soft magnetic region to determine the region.
It is preferred that, methods described also includes：Magnetic signal is detected having been determined according to testing result when being not powered on stream
When, it is hard magnetic region to determine the region.
It is preferred that, methods described also includes：Successively 0, I1, I2 are passed through to the coil......In electric current, wherein I1,
I2......In increases successively.
It is preferred that, it is described to be passed through 0, I1, I2 to the coil successively......In electric current includes：Periodically successively to
The coil is passed through 0, I1, I2......In electric current.
It is preferred that, the electric current inputted in the coil is at least one of sine wave, square wave, triangular wave, trapezoidal wave.
Beneficial effect：
The present invention is by carrying on the back surface mount coil in Magnetic sensing component and controlling the size of the electric current by coil so that magnetic
The property sensor back of the body magnetic different equivalent to magnetic induction intensity is mounted with, so as to which the different hard magnetic region of coercivity is detected
Come.Further, testing result when coupling coil is not powered on flowing, can detect soft magnetic region.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the magnetic sensor structure chart that the embodiment of the present invention one is provided；
Fig. 2 is the magnetic detection system structure chart that the embodiment of the present invention three is provided；
Fig. 3 is the Magnetic sensing methods flow chart that the embodiment of the present invention four is provided.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention aims to provide a kind of for detecting the coercitive magnetic sensor of Hard Magnetic and the magnetic based on it
Detection method and system, the size of the electric current by controlling to be passed through the coil installed in the Magnetic sensing component back side, detection are tested
Survey the different coercivitys of the hard magnetic region of object.
Embodiment one
As shown in figure 1, a kind of magnetic sensor provided for the embodiment of the present invention one, including Magnetic sensing component 11 and peace
Coil 12 loaded on the back side of Magnetic sensing component 11.
Magnetic sensing component 11, for dividing when coil 12 leads to electric current of different sizes the same area of detected object
Do not detected and export testing result respectively, during to be hard magnetic region in the region, further sentenced according to testing result
The coercivity size in the disconnected region.
When leading at least two electric currents of different sizes to coil 12, different electric currents can produce different magnetic induction intensity
Magnetic field, different back of the body magnetic are mounted with equivalent to Magnetic sensing component 11.As stated in the Background Art, with different coercitive Hard Magnetics
Region, its reaction to different magnetic induction intensity is different, and the different coercivitys of hard magnetic region can be detected accordingly.
Assuming that have the coercitive false proof regions of Hard Magnetic of 200Gs and 1000Gs two respectively on tested bank note, when coil logical the
During one electric current, the magnetic induction intensity of generation is 500Gs, and when leading to the second electric current, the magnetic induction intensity of generation is 1100Gs.So exist
During logical first electric current, the magnetic force direction that can detect the coercitive false proof regions of 200Gs is overturn, and 1000Gs coercivitys
False proof region magnetic force direction do not overturn, then the coercivity that can determine the coercitive false proof regions of 200Gs is less than
500Gs.Further, in logical second electric current, the magnetic force direction that can detect the coercitive false proof regions of 1000Gs there occurs
Upset, so that the coercivity for determining the coercitive false proof regions of 1000Gs is more than or equal to 500Gs, less than 1100Gs.Work as line
When circle leads to two adjacent electric currents of size respectively, some region of magnetic force direction is changed, then it represents that the Hard Magnetic in the region
Coercivity between the corresponding magnetic induction intensity of the two electric currents.
Obvious, by the smaller electric current of the difference that more and size is passed through to coil, can more accurately it detect not
With the coercitive size of hard magnetic region.As above, if logical 3rd electric current and four electric currents are set, the magnetic induction intensity point of generation
Not 900Gs and 1050Gs, then it may determine that to the coercitive false proof regions of 1000Gs coercivity 900Gs-
Between 1050Gs.
, can be according to order from big to small or from small to large to the line in the present invention for convenience of the analysis of testing result
Circle is passed through electric current, to carry out Time share scanning to detection zone.
Because the situation that magnetic force direction is overturn is only present in hard magnetic region, thus a certain region need not be determined in advance for Hard Magnetic
Judging its coercivity size behind region.But a region directly can be judged for hard magnetic region according to magnetic force direction upset, and
Judge its coercivity size.
It should be noted that not having when determining detection zone according to the above-mentioned testing result for being passed through electric current at least one times
During magnetic signal, then above-mentioned detection zone is nonmagnetic region.
Embodiment two
As described in embodiment one, above-mentioned is that the coercivity of hard magnetic region is judged.In practice, marketable securities such as paper
Coin etc., is additionally provided with soft magnetic region thereon.Because existing magnetic sensor has installed back of the body magnetic additional, it is on detection detected object
When hard magnetic region and soft magnetic region, obtained testing result is the same, thus cannot be distinguished by hard magnetic region and soft magnetic region.For
This, in the embodiment of the present invention two, can on the coil of embodiment one obstructed electric current, and using Magnetic sensing component in coil not
During galvanization, the above-mentioned detection zone to detected object is detected and exports testing result, to be sentenced according to testing result
Whether the disconnected region is soft magnetic region.
Specifically, when in coil galvanization, according to testing result determine detection zone have magnetic signal and in coil not
During galvanization, determining detection zone according to testing result does not have magnetic signal, then the detection zone is soft magnetic region.When coil is logical
During electric current, equivalent to being mounted with to carry on the back magnetic on Magnetic sensing component, as long as thus be detected region there is Hard Magnetic or soft magnetism, all can be by
Detecting it has magnetic characteristic.When the obstructed electric current of coil, equivalent to back of the body magnetic is fitted without on Magnetic sensing component, thus
Only being detected region has Hard Magnetic, and can just be detected it has magnetic characteristic.In other words, if having magnetic during 2 galvanization of line
Property feature, there is no magnetic characteristic during obstructed electric current, then the region be soft magnetic region.
Certainly, testing result when can also be not powered on stream in the present invention according to coil determines whether the region is Hard Magnetic area
Domain, if specifically, when coil is not powered on stream, determining detection zone according to testing result has magnetic signal, then the detection zone
For hard magnetic region.
It should be noted that in actual applications, if coil elder generation galvanization, detecting detection zone does not have magnetic special
Levy, then it is that without magnetic area, then situation when without follow-up electric current obstructed to coil is detected to be assured that the region.
Certainly, when being related to detection, multiple detection zones, now, the side of being are had on detected object such as marketable securities
Just whole detection process, the detection in each region can be set to coil be passed through the obstructed electric current of at least two sizes and
Obstructed electric current, then periodically repeats the process, until being finished to the detection of all detection zones.
It can be seen that, the present invention is by setting coil, and control is passed through the electric current of coil to realize that magnetic sensor carries on the back the magnetic strength of magnetic
The size of intensity is answered, and then can be analyzed by testing result during different induction levels when detection zone is Hard Magnetic area
Coercivity size during domain.
Further, it is passed through the electric current of coil by control to realize that magnetic sensor carries on the back the big of the magnetic induction intensity of magnetic
It is small, and then the coercive when detection zone is hard magnetic region can be analyzed by testing result during different induction levels
Power size.
Above-mentioned detected object is usually marketable securities, such as bank note.Above-mentioned Magnetic sensing component is AMR magnetic detections member
Part, GMA Magnetic sensing components or TMR Magnetic sensing components.
In conjunction with the embodiments one, in embodiment two, when detecting a certain region, can to the obstructed electric current of coil, be passed through not
Testing result with current carries out analysis judgement.
Specifically, when the obstructed electric current of coil, detecting that a region has magnetic characteristic, then the region is Hard Magnetic area
Domain, then according to Analysis of test results its coercivity when being passed through electric current of different sizes；If being magnetic feature during coil electricity stream,
There is no magnetic characteristic during obstructed electric current, then the region is soft magnetic region；If being detected during coil electricity stream, a region does not have magnetic
Property feature, then the region be without magnetic area.
Certainly, in actual applications, the judgement of hard magnetic region can also be realized by other method, as long as therefore, true
After fixed a certain region is hard magnetic region, it is possible to according to Analysis of test results its coercivity when being passed through electric current of different sizes.
Embodiment three
On the basis of above-described embodiment, present invention also offers a kind of magnetic detection system, as shown in Fig. 2 the system
Including power supply 21, Analysis of test results device 22 and above-mentioned magnetic sensor 23, magnetic sensor 23 includes magnetic detection
Element 231 and coil 232.
Wherein power supply 21, for being powered for coil 232；
Magnetic sensor 23, for coil 232 lead at least two electric currents of different sizes when to the same of detected object
Detected respectively and export testing result respectively in one region；
Analysis of test results device 22, for being hard magnetic region in region and determining two electric currents correspondence of adjacent size
Testing result direction it is different when, determine region Hard Magnetic coercivity adjacent size the corresponding coercivity of two electric currents
Between.Its specific analytical method can be found in the description in embodiment two.
Because the situation that magnetic force direction is overturn is only present in hard magnetic region, thus a certain region need not be determined in advance for Hard Magnetic
Judging its coercivity size behind region.But a region is directly judged for hard magnetic region according to magnetic force direction upset, and judge
Its coercivity size.
Further, Analysis of test results device 22, is additionally operable to lead at least two electric currents of different sizes according to coil 232
When testing result, determine when not detecting magnetic signal, confirmation detection zone is nonmagnetic region.
It is further differentiation soft magnetic region before as described in embodiment, magnetic sensor 23 is additionally operable in coil 232
When being not powered on stream, the detection zone to detected object is detected and exports testing result.Analysis of test results device 22, is used
Determined in testing result when according to logical at least two electric current of different sizes and detect magnetic signal and according to being not powered on stream
When testing result determine when not detecting magnetic signal, it is soft magnetic region to determine detection zone.
Analysis of test results device 22, detection has been determined for the testing result when being not powered on stream according to coil 232
During to magnetic signal, it is hard magnetic region to determine detection zone.
As shown in Fig. 2 system also includes controller 24, for the electric current for controlling power supply 21 to be passed through to coil 232.Specifically
, for controlling power supply 21 to be passed through 0, I1, I2 to coil 232 successively......In electric current, wherein I1, I2......In is successively
Increase, wherein n is the integer more than 1.I.e. when detecting a region, the control of controller 24 power supply 21 is not powered first to coil 232
Stream, the now acquisition of magnetic sensor 23 testing result, the power supply 21 of the control of controller 24 afterwards is passed through to the priority of coil 232 to be increased successively
Big I1, I2......In electric current, magnetic sensor 23 obtains the testing result of each electric current of correspondence.
Because detected object may have multiple detection zones, now, controller 24 can control power supply 21 to coil
232 are periodically passed through 0, I1, I2 to the coil successively......In electric current, with the detection in each region of correspondence.
In preferred embodiment, controller 24 can be controlled in the input sine wave of power supply 21, square wave, triangular wave, trapezoidal wave
It is at least one.
When inputting a variety of exchanges, an alternation mixed magnetic field can be produced, to carry out full-size scanning to detected object.
Example IV
Correspondence above three embodiment, the embodiment of the present invention four additionally provides a kind of for detecting the coercitive magnetic of Hard Magnetic
Detection method, as shown in figure 3, including:
S11, when coil passes to few two electric currents of different sizes the same area of detected object is examined respectively
Survey and export testing result respectively；The coil is arranged on the back side of the Magnetic sensing component；
S12, the region be hard magnetic region and determine adjacent size the corresponding testing result of two electric currents side
To it is different when, determine the coercivity of Hard Magnetic in the region between the corresponding coercivity of two electric currents of the adjacent size.
Because the situation that magnetic force direction is overturn is only present in hard magnetic region, thus a certain region need not be determined in advance for Hard Magnetic
Judging its coercivity size behind region.But a region is directly judged for hard magnetic region according to magnetic force direction upset, and judge
Its coercivity size.
It is preferred that, Magnetic sensing methods of the present invention also include S13, lead at least two electricity of different sizes according to the coil
Testing result during stream, is determined when not detecting magnetic signal, and it is nonmagnetic region to confirm the region.
For further detection soft magnetic region, Magnetic sensing methods of the present invention also include:
S14, the coil be not powered on stream when, the region of detected object is detected and export detection tie
Really；
S15, testing result when according to logical at least two electric current of different sizes determine and detect magnetic signal and root
According to be not powered on stream when testing result determine do not detect magnetic signal when, determine the region be soft magnetic region.
It is preferred that, methods described also includes：S16, the testing result when basis is not powered on stream have determined and have detected magnetic
During signal, it is hard magnetic region to determine the region.
, can be according to order from big to small or from small to large to the line in the present invention for convenience of the analysis of testing result
Circle is passed through electric current, is such as passed through 0, I1, I2 to the coil successively......In electric current, wherein I1, I2......In increases successively
Greatly.
Further, because detected object is when carrying out full-size scanning, being related to can in multiple detection zones, the present invention
Periodically it is passed through 0, I1, I2 to the coil successively......In electric current, with the detection in each region of correspondence.
The electric current inputted in above-mentioned coil can be at least one of sine wave, square wave, triangular wave, trapezoidal wave.
When inputting a variety of exchanges, an alternation mixed magnetic field can be produced, to carry out full-size scanning to detected object.
On the basis of above-mentioned testing result, it can be compared with the magnetic characteristic of the genuine marketable securities prestored, to sentence
Break the true and false of detected marketable securities.
It the above is only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (11)
1. one kind is used to detect the coercitive magnetic detection system of Hard Magnetic, it is characterised in that the magnetic detection system includes electricity
Source, Analysis of test results device and magnetic sensor, the magnetic sensor include：
Magnetic sensing component and the coil for being installed on the Magnetic sensing component back side；
The Magnetic sensing component, for the coil lead at least two electric currents of different sizes when to the same of detected object
One region is detected and exports testing result respectively respectively, during to be hard magnetic region in the region, according to the detection
As a result the coercivity in the region is judged；
The power supply, for for the coil power supply；
The magnetic sensor, for the coil lead at least two electric currents of different sizes when to the same of detected object
Detected respectively and export testing result respectively in region；
The Analysis of test results device, for being hard magnetic region in the region and determining two electric currents pair of adjacent size
When the direction of the testing result answered is different, determine the region Hard Magnetic coercivity the adjacent size two electric currents pair
Between the coercivity answered；
The system also include controller, for control the energy supply periodic successively to the coil be passed through 0, I1,
I2 ... In electric current, wherein I1, I2 ... In increases successively, and the n is the integer more than 1；The controller is used to control
At least one of the power input sine wave, square wave, triangular wave, trapezoidal wave.
2. magnetic detection system as claimed in claim 1, it is characterised in that the Analysis of test results device, is additionally operable to root
Lead to testing result during at least two electric currents of different sizes according to the coil, determine when not detecting magnetic signal, confirm
The region is nonmagnetic region.
3. magnetic detection system as claimed in claim 1, it is characterised in that the magnetic sensor, is additionally operable in the line
When circle is not powered on stream, the region of detected object is detected and testing result is exported；
The Analysis of test results device, is determined for testing result when according to logical at least two electric current of different sizes
Detect magnetic signal and according to be not powered on stream when testing result determine do not detect magnetic signal when, determine that the region is
Soft magnetic region.
4. magnetic detection system as claimed in claim 3, it is characterised in that the Analysis of test results device, in root
According to be not powered on stream when testing result determined detect magnetic signal when, determine the region be hard magnetic region.
5. one kind is used to detect the coercitive Magnetic sensing methods of Hard Magnetic, it is characterised in that the Magnetic sensing methods include:
The same area of detected object is detected and distinguished respectively when coil passes to few two electric currents of different sizes
Export testing result；The coil is arranged on the back side of a Magnetic sensing component；
Be hard magnetic region in the region and determine the corresponding testing result of two electric currents of adjacent size direction it is different when,
Determine the coercivity of Hard Magnetic in the region between the corresponding coercivity of two electric currents of the adjacent size.
6. Magnetic sensing methods as claimed in claim 5, it is characterised in that the Magnetic sensing methods also include:According to institute
Testing result when coil leads at least two electric currents of different sizes is stated, is determined when not detecting magnetic signal, is confirmed described
Region is nonmagnetic region.
7. Magnetic sensing methods as claimed in claim 5, it is characterised in that the Magnetic sensing methods also include:
When the coil is not powered on stream, the region of detected object is detected and testing result is exported；
Testing result when according to logical at least two electric current of different sizes, which is determined, detects magnetic signal and according to being not powered on
Testing result during stream is determined when not detecting magnetic signal, and it is soft magnetic region to determine the region.
8. Magnetic sensing methods as claimed in claim 7, it is characterised in that methods described also includes：Stream is not powered in basis
When testing result determined when detecting magnetic signal, it is hard magnetic region to determine the region.
9. the Magnetic sensing methods as described in claim any one of 5-8, it is characterised in that successively to described in methods described
Coil is passed through 0, and I1, I2 ... In electric current, wherein I1, I2 ... In increase successively.
10. Magnetic sensing methods as claimed in claim 9, it is characterised in that it is described successively to the coil be passed through 0, I1,
I2 ... In electric current includes：Periodically it is passed through 0, I1, I2 ... In electric current to the coil successively.
11. Magnetic sensing methods as claimed in claim 10, it is characterised in that the electric current inputted in the coil is sine
At least one of ripple, square wave, triangular wave, trapezoidal wave.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188554A (en) * | 1995-05-15 | 1998-07-22 | 克兰股份有限公司 | Verifier device for magnetic security thread |
| 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 |
| CN200997152Y (en) * | 2006-01-25 | 2007-12-26 | 中国印钞造币总公司 | Senser for measuring magnetic material in negotiable securities |
| KR20110060631A (en) * | 2009-11-30 | 2011-06-08 | 한국조폐공사 | Handheld recognition device for detecting forgery with magnetic magnet sensor of electromagnet type and sample measuring method using same |
| CN204155340U (en) * | 2014-11-03 | 2015-02-11 | 苏州保瑟佳货币检测科技有限公司 | Magnetic sensor and based on its magnetic detection system |
| CN104361671A (en) * | 2014-11-03 | 2015-02-18 | 苏州保瑟佳货币检测科技有限公司 | Magnetic sensor and magnetic detection method and system based on same |
| CN204242273U (en) * | 2014-11-03 | 2015-04-01 | 苏州保瑟佳货币检测科技有限公司 | For detecting the coercitive magnetic sensor of Hard Magnetic and detection system |
-
2014
- 2014-11-03 CN CN201410609861.XA patent/CN104484936B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1188554A (en) * | 1995-05-15 | 1998-07-22 | 克兰股份有限公司 | Verifier device for magnetic security thread |
| 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 |
| CN200997152Y (en) * | 2006-01-25 | 2007-12-26 | 中国印钞造币总公司 | Senser for measuring magnetic material in negotiable securities |
| KR20110060631A (en) * | 2009-11-30 | 2011-06-08 | 한국조폐공사 | Handheld recognition device for detecting forgery with magnetic magnet sensor of electromagnet type and sample measuring method using same |
| CN204155340U (en) * | 2014-11-03 | 2015-02-11 | 苏州保瑟佳货币检测科技有限公司 | Magnetic sensor and based on its magnetic detection system |
| CN104361671A (en) * | 2014-11-03 | 2015-02-18 | 苏州保瑟佳货币检测科技有限公司 | Magnetic sensor and magnetic detection method and system based on same |
| CN204242273U (en) * | 2014-11-03 | 2015-04-01 | 苏州保瑟佳货币检测科技有限公司 | For detecting the coercitive magnetic sensor of Hard Magnetic and detection system |
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