CN203311504U - Magnetic sensor, automatic teller machine with same, and currency detector with same - Google Patents
Magnetic sensor, automatic teller machine with same, and currency detector with same Download PDFInfo
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- CN203311504U CN203311504U CN2013203995243U CN201320399524U CN203311504U CN 203311504 U CN203311504 U CN 203311504U CN 2013203995243 U CN2013203995243 U CN 2013203995243U CN 201320399524 U CN201320399524 U CN 201320399524U CN 203311504 U CN203311504 U CN 203311504U
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Abstract
A magnetic sensor, an automatic teller machine with the same, and a currency detector with the same are provided. The magnetic sensor is provided with a magnet and a magnetic sensitive element; the magnetic sensitive element responds to a magnetic code magnetic field size and direction generated by a magnetic code in a banknote which is magnetized by the magnet; the magnetic code is magnetized by the magnet when the magnetic code goes across the surface of the magnetic sensor, so as to complete a full or part of a magnetic hysteresis loop process; and the magnetic sensor reads a corresponding magnetization process signal and then performs identification. According to the utility model, the magnetic code property can be distinguished; the magnetic hysteresis loop characteristic of the magnetic code can be quantized; the magnetic sensor is independent of the magnetic code signal strength, so that the magnetic sensor is not sensitive to the detection interval; and the characteristics if high precision in identification and good stability in identification are realized.
Description
Technical field
The utility model relates to financial magnetic authentication detection technology field, particularly relates to a kind of Magnetic Sensor and and has ATM (Automatic Teller Machine) and a cash inspecting machine of this Magnetic Sensor.
Background technology
Currency is one of circulation market indispensable element, in order to ensure stablizing of financial circulation order, need to carry out the discriminating of the currency true and false.
Due to currency, in the printing process, can arrange and be distributed with a plurality of magnetic codes.Carry out the check of the currency true and false by checking these magnetic code features to carry out.In prior art, the mode that the magnetic code feature is detected is magnetic and detects and optical characteristics detection two large classes.
The magnetic false distinguishing detects because the advantages such as its quick machine examination easy to detect are widely used in currency.At present, financial magnetic false distinguishing has become one of the requisite means of the stable institute of financial circulation order of safeguarding.
The principle of magnetic false distinguishing is that the magnetic pin arranged in currency is detected, and comprises the features such as magnetic field intensity and position distribution.Along with the progress of technology, financial magnetic authentication detection technology has experienced by currency examine speed and the too responsive inductive coil of detection spacing are developed into to comparatively advanced Hall magnetic resistance.Yet Hall magnetic resistance low-intensity magnetic field reluctivity is extremely low, add that its evaluation program need to depend on the magnetic code signal intensity, thereby require to have minimum detector gap, usually be less than 0.1mm.Make signal change with gap and other affect the factor of signal intensity and unstable, occur easily that card paper money rate is high, rate of wear reaches greatly and press the coin wheel because of the pressure series of problems such as easy fracture greatly.
In addition, the Hall magnetic resistance can't simply easily be distinguished soft magnetism and Hard Magnetic because of it to the magnetic direction response is symmetrical, as shown in Figure 1, and more fubaritic full hysteresis loop line feature.Can only according to the geometry mechanical property of magnetic code, judge with strong and weak absolute value or the ratio attempted with different magnetic code signals unilaterally, cause, on the strong dependency that affects magnetic code signal intensity factor and the uncertainty that the signal power is judged, can't being competent at by the magnetic characteristic of comprehensive evaluation magnetic code thoroughly false proof important task.Fact proved, the Hall magnetic resistance can't be differentiated the new edition counterfeit money occurred in recent years.
Moreover the Hall magnetic resistance in leading market can't be avoided adjacent closely spaced magnetic code signal stack at present, causes the complicated of evaluation program.
In science and technology highly developed today, the magnetic field size and location of the true magnetic code of not so difficult forgery distribute, and uncertainty as above while adding the conventional art judgement brings challenges for the magnetic code false distinguishing.
Therefore, the authentication detection technology that can differentiate the more technical characterictics of currency need to be provided.And in fact, unless know, print paper money producer magnetic code formula and manufacturing process, want to copy fully whole magnetic hysteresis loop features very difficult really of all a plurality of true magnetic codes.Therefore, false distinguishing can not simply lean on comparison magnetic code magnetic field size and location to distribute fully, and more requirement can qualitatively reach quantitatively soft or hard magnetic attribute and the magnetic hysteresis loop feature of identification magnetic code, with the stability of guaranteeing the signal judgement and the uncertainty that reduces authentication method.
Therefore, for the prior art deficiency, a kind of Magnetic Sensor was provided and have the ATM (Automatic Teller Machine) of this Magnetic Sensor and cash inspecting machine very necessary to overcome the prior art deficiency.
The utility model content
One of the purpose of this utility model is to avoid weak point of the prior art and a kind of Magnetic Sensor is provided, and this Magnetic Sensor can completely be distinguished the feature of the magnetic hysteresis loop that a plurality of magnetic pins of currency setting have separately.
Another purpose of the present utility model is to avoid weak point of the prior art and a kind of ATM (Automatic Teller Machine) is provided, and this ATM (Automatic Teller Machine) can completely be distinguished the feature of the magnetic hysteresis loop that a plurality of magnetic pins of currency setting have separately and accurately identify the currency true and false.
The utility model also has a purpose to be to avoid weak point of the prior art and a kind of cash inspecting machine is provided, and this cash inspecting machine can completely be distinguished the feature of the magnetic hysteresis loop that a plurality of magnetic pins of currency setting have separately and accurately identify the currency true and false.
Above-mentioned purpose of the present utility model realizes by following technical measures.
A kind of Magnetic Sensor is provided, described Magnetic Sensor is provided with magnet and magnet-sensitive element, the magnetic code magnetic field size that described magnet-sensitive element produces magnetic code in described magnet magnetization bank note and the direction in magnetic code magnetic field respond, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is identified by the signal that Magnetic Sensor reads corresponding magnetic history again;
Described magnet-sensitive element is comprised of two or four magnetic susceptibility unit, and described magnetic susceptibility unit specification is identical and identical to the magnetic direction response, and when described magnet-sensitive element was two, two described magnet-sensitive elements formed the Hui Sitong half-bridge circuits; When described magnet-sensitive element is set to four, four described magnetic susceptibility cell formation Hui Sitong full-bridge circuits;
Described favour stone half-bridge circuit or described favour stone full-bridge circuit are symmetrically distributed in described magnet centerline both sides along the magnetic induction direction.
The magnetic responsiveness of above-mentioned magnetic susceptibility unit is identical with magnetic direction, and the magnetic susceptibility unit that is arranged in magnet centerline one side with in opposite side magnetic susceptibility unit, same magnetic direction is had to identical response;
The magnetic direction that each described magnetic susceptibility unit detects is identical or opposite along the direction of magnet transverse shifting with magnetic code.
Above-mentioned magnetic susceptibility unit is set to inductive coil, giant magnetoresistance, tunnel magnetoresistive, with different magnetoresistive film or device, fluxgate or the superconduction heterojunction of barber shop's formula conductive stripe.
Above-mentioned magnet is set to strip, and the south poles of described magnet is perpendicular to magnetic induction direction and the magnetic inductor plane of Magnetic Sensor, and transverse field strength can allow magnetic code along horizontal process Magnetic Sensor the time, experience part or all of magnetic hysteresis loop process.
The utility model provides a kind of ATM (Automatic Teller Machine), be provided with the verification unit of forge or true or paper money being distinguished to detection, described verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the magnetic code signal of bank note, after treated cell processing, be sent to display unit and show, described sensor setting is above-mentioned Magnetic Sensor.
The utility model also provides a kind of cash inspecting machine, be provided with the verification unit of forge or true or paper money being distinguished to detection, described verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the magnetic code signal of bank note, after treated cell processing, be sent to display unit and show, the sensor is set to above-mentioned Magnetic Sensor.
Magnetic Sensor of the present utility model, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is read the signal of corresponding magnetic history and then the magnetic hysteresis loop feature of magnetic code is identified by Magnetic Sensor.The utility model can be distinguished magnetic code soft or hard magnetic attribute can quantize to define the magnetic hysteresis loop feature of magnetic code, thereby it is insensitive to detector gap not rely on the power of magnetic code signal, identifies therefore have that degree of accuracy is high and identifies the characteristics of good stability.
ATM (Automatic Teller Machine) of the present utility model is carried out the forge or true or paper money evaluation, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is read the signal of corresponding magnetic history and then the magnetic hysteresis loop feature of magnetic code is identified by Magnetic Sensor.ATM (Automatic Teller Machine) of the present utility model can be distinguished magnetic code soft or hard magnetic attribute and can quantize to define the magnetic hysteresis loop feature of magnetic code, thereby the power that does not rely on the magnetic code signal is insensitive to detector gap, therefore have, identify the high characteristics with identifying good stability of degree of accuracy.
Currency examine person's machine of the present utility model carries out the forge or true or paper money evaluation, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is read the signal of corresponding magnetic history and then the magnetic hysteresis loop feature of magnetic code is identified by Magnetic Sensor.Cash inspecting machine of the present utility model can be distinguished magnetic code soft or hard magnetic attribute can quantize to define the magnetic hysteresis loop feature of magnetic code, thereby it is insensitive to detector gap not rely on the power of magnetic code signal, identifies therefore have that degree of accuracy is high and identifies the characteristics of good stability.
The accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is by Hard Magnetic and soft magnetism signal schematic representation that the nondistinctive Hall magnetoresistive transducer of magnetic direction is read.
Fig. 2 is the structural representation of the Magnetic Sensor embodiment 1 of a kind of ATM (Automatic Teller Machine) of the present utility model.
Fig. 3 a has illustrated that coercive force is the comparison diagram of zero soft magnetism magnetic code and coercive force Hard Magnetic magnetic code drawn signal through described Magnetic Sensor time of being greater than magnetic field of magnets.
Fig. 3 b has illustrated coercive force to be less than magnetic code drawn signal graph through Magnetic Sensor time of magnetic field of magnets.
Fig. 4 is that Hard Magnetic or soft magnetism magnetic code experience the schematic diagram in magnetic history path during laterally through magnet.
At Fig. 2, comprise:
Embodiment
With the following Examples the utility model is further described.
A kind of Magnetic Sensor, as shown in Figure 2, be provided with matrix 1, shell 2, wheatstone bridge circuits interface 3, magnet-sensitive element 4 and magnet 5.
The south poles of magnet 5 is perpendicular to magnetic induction direction and the magnetic inductor plane of Magnetic Sensor, and transverse field strength can allow magnetic code along horizontal process Magnetic Sensor the time, experience part or all of magnetic hysteresis loop process.
Concrete, the magnetic responsiveness of magnetic susceptibility unit is identical to same magnetic direction, and the magnetic susceptibility unit that is arranged in magnet 5 center line one sides with in opposite side magnetic susceptibility unit, same magnetic direction is had to identical response.
The magnetic direction that each described magnetic susceptibility unit detects is identical or opposite along the direction of magnet 5 transverse shiftings with magnetic code.
The magnetic susceptibility unit is set to inductive coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film or the device of barber shop's formula conductive stripe.It should be noted that, the magnetic susceptibility unit is not limited to above-mentioned form, also can be fluxgate, superconduction heterojunction etc.
Wherein, there are difference or opposite response in 4 pairs of different directions magnetic fields of magnet-sensitive element, can be magnetic induction coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film chip or the device of barber shop's lamp formula bus.
Adopt this Magnetic Sensor to quantize to identify magnetic code magnetic hysteresis loop feature, its detailed process is, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is identified by the signal that Magnetic Sensor reads corresponding magnetic history.
Evaluation comprises that magnetic code soft or hard magnetic characteristic is identified and the coercive force of quantification definition magnetic code.
Wherein, magnetic code soft or hard magnetic characteristic identifies it is whether signal according to single magnetic code is that monolateral peak judges whether magnetic code belongs to Hard Magnetic or soft magnetism.When only occurring that two monolateral signal peaks mean that magnetic code is can be by the soft magnetism of magnet reverse magnetization direction; If two bilateral signal peaks (positive and negative signal peak occurs simultaneously) occur, be judged as the Hard Magnetic that coercive force is greater than magnetic field of magnets.
The coercive force that quantizes the definition magnetic code specifically calculates the peak-to-peak crest of different ripples of each single magnetic code signal of sensing the magnetic susceptibility unit, the ratio that ripple is wide or half peak time is wide; Or calculate the peak-to-peak crest of different ripples of each single magnetic code signal of sensing the magnetic susceptibility unit, the difference that ripple is wide or half peak time is wide, with this ratio or difference, weigh and quantize to define the coercitive size of this magnetic code.
When two monolateral crests occurring, coercive force is zero, as shown in Fig. 3 a solid line.
When two bilateral crests occurring, coercive force is greater than magnetic field of magnets, as shown in Fig. 3 a dotted line.
When occurring more than two bilateral crests, coercive force is less than magnetic field of magnets.And the crest of first crest and second crest, ripple is wide or half peak time is wide ratio (V1/V2 as shown in Fig. 3 b, t1/t2, w1/w2) or difference (V1-V2 as shown in Fig. 3 b, t1-t2, w1-w2) quantize to have defined coercitive size.
When occurring more than two bilateral crests and ratio while being less than 1.0, the more approaching zero explanation coercive force of ratio is more near magnetic field of magnets; When occurring more than two bilateral crests and ratio while being greater than 1.0, ratio more near 1.0 explanation coercive forces more near magnetic field of magnets.
Magnetic Sensor of the present utility model, when magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by magnet magnetization, and read the signal of corresponding magnetic history and then identified by Magnetic Sensor.By this Magnetic Sensor, can to each magnetic code of currency, carry out the magnetic hysteresis loop feature and read, make the currency false distinguishing more comprehensive and more accurate.
By this Magnetic Sensor, identify, method, according to the signal read, adopts the crest quantity method qualitative judgement magnetic code of same single magnetic code whether to belong to Hard Magnetic; Adopt the wave amplitude ratioing technigue of same magnetic code to quantize to identify that the magnetic code coercive force does not rely on the absolute value of magnetic code magnetic field intensity signal, thereby insensitive on factors such as the detector gap that affects signal intensity, bank note situation, bank note angle, temperature drift, magnet-sensitive element aberrations in property, guaranteed the stability of false distinguishing judgement parameter and the accuracy of judgement.
Magnetic Sensor of the present utility model, can distinguish magnetic code and belong to soft magnetism or Hard Magnetic; Can quantize to define the magnetic hysteresis loop feature, comprise coercive force; Its determination methods is for the magnetic hysteresis loop feature of each independent magnetic code itself, thereby do not rely on the power of magnetic code signal, can break away to greatest extent the constraint of magnetic field with range attenuation.Solved series of problems such as requiring minimum detector gap, card paper money, roller fracture, bank note wearing and tearing, fold, angle and temperature drift.
Due to above-mentioned beneficial effect, the utility model is identified precisely.To whole magnetic codes in bank note, criterion can be implemented to quantize, counterfeit money can be effectively checked and prevent.
In addition, magnetic sensor arrangement of the present utility model is simple, easy to use, not only is suitable for the currency authenticity, and the authenticity of other article such as applicable check.
Adopt Magnetic Sensor of the present utility model, process is with the experience magnetic history above magnet by magnetic code, and the details of magnetic history as shown in Figure 4.Can the magnetization details depend on the soft or hard magnetic characteristic of magnetic code and by magnetic field of magnets, be reversed.
The Hard Magnetic magnetic code that can not be inverted, can only experience the magnetic hysteresis loop magnetic history of a part, the path 1 as shown in Fig. 4 a or path 2.In Fig. 4 a, Hm is magnet maximum transversal magnetic field, and path 1 is point from Mr+ to A, then to Mr+, then to the B point, then to Mr+.Path 2 is point from Mr-to C, then to Mr-, then to the B point, then to Mr+.The soft magnetism magnetic code that can be inverted, the direction of magnetization of the remanent magnetism when initial by magnetic code (Mr+ or Mr-) determines, path 1 as shown in Figure 4 b or path 2.In Fig. 4 b, path 1 is point from Mr+ to A, then to Hc-, then arrive successively B point, C point, B point, Mr-, D point, Hc+, E point, F point, E point, finally arrive Mr+.
A kind of ATM (Automatic Teller Machine), be provided with the verification unit of forge or true or paper money being distinguished to detection, verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the signal of bank note, after treated cell processing, is sent to display unit and shows.Sensor setting is the described Magnetic Sensor of embodiment 1.
Magnetic Sensor, as shown in Figure 2, be provided with matrix 1, shell 2, wheatstone bridge circuits interface 3, magnet-sensitive element 4 and magnet 5.
The south poles of magnet 5 is perpendicular to magnetic induction direction and the magnetic inductor plane of Magnetic Sensor, and transverse field strength can allow magnetic code along horizontal process Magnetic Sensor the time, experience part or all of magnetic hysteresis loop process.
Concrete, the magnetic responsiveness of magnetic susceptibility unit is identical to same magnetic direction, and the magnetic susceptibility unit that is arranged in magnet 5 center line one sides with in opposite side magnetic susceptibility unit, same magnetic direction is had to identical response.
The magnetic direction that each described magnetic susceptibility unit detects is identical or opposite along the direction of magnet 5 transverse shiftings with magnetic code.
The magnetic susceptibility unit is set to inductive coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film or the device of barber shop's formula conductive stripe.It should be noted that, the magnetic susceptibility unit is not limited to above-mentioned form, also can be fluxgate, superconduction heterojunction etc.
Wherein, there are difference or opposite response in 4 pairs of different directions magnetic fields of magnet-sensitive element, can be magnetic induction coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film chip or the device of barber shop's lamp formula bus.
ATM (Automatic Teller Machine) of the present utility model adopts method as described in Example 3 to carry out the magnetic code authenticity, when magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by magnet magnetization, and read the signal of corresponding magnetic history and then identify by Magnetic Sensor.The information conveyance of Magnetic Sensor, to processing unit, shows true and false result after treated cell processing by display unit.
By the Magnetic Sensor of this ATM (Automatic Teller Machine), can to each magnetic code of currency, carry out the magnetic hysteresis loop feature and read, make the currency false distinguishing more comprehensive and more accurate.
ATM (Automatic Teller Machine) of the present utility model, can distinguish magnetic code and belong to soft magnetism or Hard Magnetic; Can quantize to define the magnetic hysteresis loop feature, comprise coercive force; Its determination methods is for the magnetic hysteresis loop feature of each independent magnetic code itself, thereby do not rely on the power of magnetic code signal, can break away to greatest extent the constraint of magnetic field with range attenuation.Solved series of problems such as requiring minimum detector gap, card paper money, roller fracture, bank note wearing and tearing, fold, angle and temperature drift.
Due to above-mentioned beneficial effect, ATM (Automatic Teller Machine) of the present utility model has the characteristics accurately of identifying.To whole magnetic codes in bank note, criterion can be implemented to quantize, counterfeit money can be effectively checked and prevent.
In addition, ATM (Automatic Teller Machine) of the present utility model is simple in structure, easy to use, not only is suitable for the currency authenticity, and the authenticity of other article such as applicable check.
A kind of cash inspecting machine, be provided with the verification unit of forge or true or paper money being distinguished to detection, verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the signal of bank note, after treated cell processing, is sent to display unit and shows.Sensor setting is the described Magnetic Sensor of embodiment 1.
Magnetic Sensor, as shown in Figure 2, be provided with matrix 1, shell 2, wheatstone bridge circuits interface 3, magnet-sensitive element 4 and magnet 5.
The south poles of magnet 5 is perpendicular to magnetic induction direction and the magnetic inductor plane of Magnetic Sensor, and transverse field strength can allow magnetic code along horizontal process Magnetic Sensor the time, experience part or all of magnetic hysteresis loop process.
Concrete, the magnetic responsiveness of magnetic susceptibility unit is identical to same magnetic direction, and the magnetic susceptibility unit that is arranged in magnet 5 center line one sides with in opposite side magnetic susceptibility unit, same magnetic direction is had to identical response.
The magnetic direction that each described magnetic susceptibility unit detects is identical or opposite along the direction of magnet 5 transverse shiftings with magnetic code.
The magnetic susceptibility unit is set to inductive coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film or the device of barber shop's formula conductive stripe.It should be noted that, the magnetic susceptibility unit is not limited to above-mentioned form, also can be fluxgate, superconduction heterojunction etc.
Wherein, there are difference or opposite response in 4 pairs of different directions magnetic fields of magnet-sensitive element, can be magnetic induction coil, giant magnetoresistance, tunnel magnetoresistive or with different magnetoresistive film chip or the device of barber shop's lamp formula bus.
Cash inspecting machine of the present utility model adopts method as described in Example 3 to carry out the magnetic code authenticity, when magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by magnet magnetization, and read the signal of corresponding magnetic history and then identify by Magnetic Sensor.The information conveyance of Magnetic Sensor, to processing unit, shows true and false result after treated cell processing by display unit.
By the Magnetic Sensor of this cash inspecting machine, can to each magnetic code of currency, carry out the magnetic hysteresis loop feature and read, make the currency false distinguishing more comprehensive and more accurate.
Cash inspecting machine of the present utility model, can distinguish magnetic code and belong to soft magnetism or Hard Magnetic; Can quantize to define the magnetic hysteresis loop feature, comprise coercive force; Its determination methods is for the magnetic hysteresis loop feature of each independent magnetic code itself, thereby do not rely on the power of magnetic code signal, can break away to greatest extent the constraint of magnetic field with range attenuation.Solved series of problems such as requiring minimum detector gap, card paper money, roller fracture, bank note wearing and tearing, fold, angle and temperature drift.
Due to above-mentioned beneficial effect, cash inspecting machine of the present utility model has the characteristics accurately of identifying.To whole magnetic codes in bank note, criterion can be implemented to quantize, counterfeit money can be effectively checked and prevent.
In addition, cash inspecting machine of the present utility model is simple in structure, easy to use, not only is suitable for the currency authenticity, and the authenticity of other article such as applicable check.It should be noted that, the method for magnetic code magnetic hysteresis loop feature is identified in Magnetic Sensor of the present utility model and quantification, is not only applicable to the financial technology field, also goes for other and need to sign pseudo-field, as check, magnetic bar code, and article anti-counterfeit sign etc.
Finally should be noted that; above embodiment is only be used to the technical solution of the utility model is described but not to the restriction of the utility model protection domain; although with reference to preferred embodiment, the utility model is explained in detail; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (6)
1. Magnetic Sensor, it is characterized in that: described Magnetic Sensor is provided with magnet and magnet-sensitive element, the magnetic code magnetic field size that described magnet-sensitive element produces magnetic code in described magnet magnetization bank note and the direction in magnetic code magnetic field respond, magnetic code is completed magnetic hysteresis loop process complete or part through Magnetic Sensor when surface by described magnet magnetization, and is identified by the signal that Magnetic Sensor reads corresponding magnetic history again;
Described magnet-sensitive element is comprised of two or four magnetic susceptibility unit, and described magnetic susceptibility unit specification is identical and identical to the magnetic direction response, and when described magnet-sensitive element was two, two described magnet-sensitive elements formed the Hui Sitong half-bridge circuits; When described magnet-sensitive element is set to four, four described magnetic susceptibility cell formation Hui Sitong full-bridge circuits;
Described favour stone half-bridge circuit or described favour stone full-bridge circuit are symmetrically distributed in described magnet centerline both sides along the magnetic induction direction.
2. Magnetic Sensor according to claim 1, it is characterized in that: the magnetic responsiveness of described magnetic susceptibility unit is identical with magnetic direction, and the magnetic susceptibility unit that is arranged in magnet centerline one side with in opposite side magnetic susceptibility unit, same magnetic direction is had to identical response;
The magnetic direction that each described magnetic susceptibility unit detects is identical or opposite along the direction of magnet transverse shifting with magnetic code.
3. Magnetic Sensor according to claim 2 is characterized in that: described magnetic susceptibility unit is set to inductive coil, giant magnetoresistance, tunnel magnetoresistive, with different magnetoresistive film or device, fluxgate or the superconduction heterojunction of barber shop's formula conductive stripe.
4. according to the described Magnetic Sensor of claims 1 to 3 any one, it is characterized in that: described magnet is set to strip, the south poles of described magnet is perpendicular to magnetic induction direction and the magnetic inductor plane of Magnetic Sensor, and transverse field strength can allow magnetic code along horizontal process Magnetic Sensor the time, experience part or all of magnetic hysteresis loop process.
5. ATM (Automatic Teller Machine), its spy is: be provided with the verification unit of forge or true or paper money being distinguished to detection, described verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the magnetic code signal of bank note, after treated cell processing, be sent to display unit and show, described sensor setting is Magnetic Sensor as described as claim 1 to 4 any one.
6. cash inspecting machine, it is characterized in that: be provided with the verification unit of forge or true or paper money being distinguished to detection, described verification unit is provided with sensor, processing unit and display unit, sensor gathers and Information Monitoring is delivered to processing unit the magnetic code signal of bank note, after treated cell processing, be sent to display unit and show, described sensor setting is Magnetic Sensor as described as claim 1 to 4 any one.
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| CN2013203995243U CN203311504U (en) | 2013-07-06 | 2013-07-06 | Magnetic sensor, automatic teller machine with same, and currency detector with same |
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| CN2013203995243U CN203311504U (en) | 2013-07-06 | 2013-07-06 | Magnetic sensor, automatic teller machine with same, and currency detector with same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366438A (en) * | 2013-07-06 | 2013-10-23 | 广州纳龙智能科技有限公司 | Magnetic sensor, method for quantitatively identifying magnetic code hysteretic loop characteristics, automatic teller machine and currency detector |
| 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 |
| CN106780956A (en) * | 2017-02-27 | 2017-05-31 | 深圳市倍量科技有限公司 | Bank note safety line magnetic information detection means and method |
-
2013
- 2013-07-06 CN CN2013203995243U patent/CN203311504U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366438A (en) * | 2013-07-06 | 2013-10-23 | 广州纳龙智能科技有限公司 | Magnetic sensor, method for quantitatively identifying magnetic code hysteretic loop characteristics, automatic teller machine and currency detector |
| CN103366438B (en) * | 2013-07-06 | 2015-09-02 | 广州纳龙智能科技有限公司 | A kind of method of Magnetic Sensor, quantification qualification magnetic code magnetic hysteresis loop feature and ATM (Automatic Teller Machine), cash inspecting machine |
| 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 |
| CN106780956A (en) * | 2017-02-27 | 2017-05-31 | 深圳市倍量科技有限公司 | Bank note safety line magnetic information detection means and method |
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