CN106683258B - A kind of magnetism amplitude compensation method and system - Google Patents
A kind of magnetism amplitude compensation method and system Download PDFInfo
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- CN106683258B CN106683258B CN201611144418.5A CN201611144418A CN106683258B CN 106683258 B CN106683258 B CN 106683258B CN 201611144418 A CN201611144418 A CN 201611144418A CN 106683258 B CN106683258 B CN 106683258B
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/023—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring distance between sensor and object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention belongs to financial instrument technical fields, magnetic amplitude compensation method and system are provided, when aiming to solve the problem that Mr. Yu's threshold range big due to magnetic spacing in the prior art, the magnetic data of the collected genuine notes of magnetic sensor is decayed, thus the problem of genuine notes are accredited as counterfeit money.While magnetic amplitude due to acquiring the banknote that current stream passes through in magnetic sensor, increase magnetic detecting for spaces device measurement magnetic spacing, large sample statistics is then carried out by the correspondence magnetic spacing to magnetic amplitude and measurement, obtains the relational model of magnetic decaying amplitudes Yu magnetic spacing；So magnetic amplitude data is compensated or according to relational model, it is artificial it is purposive, pointedly adjust magnetic spacing, efficiently solve the problems, such as that genuine notes are accredited as counterfeit money in the prior art.
Description
Technical field
The invention belongs to financial instrument technical field more particularly to a kind of magnetic amplitude compensation method and system.
Background technique
The gold such as cash inspecting machine, the paper money counter of magnetic sensor of assembly crewman in assembling with acquisition banknote magnetism amplitude at present
When melting equipment, the distance (i.e. magnetic spacing) of magnetic sensor banknote into money-checking channel for acquiring banknote magnetism amplitude
Judge whether properly often by the method for range estimation, especially new hand is difficult to hold magnetic spacing；On the other hand, financial machine and tool exists
In use process due to various reasons, magnetic spacing can also change.
Inventor's discovery will cause magnetic biography when whether which kind of above reason leads to magnetic spacing big Mr. Yu's threshold range
The case where magnetic data of the collected genuine notes of sensor is decayed, and there is the magnetic data of the magnetic data decayed and counterfeit money
It is much like, therefore genuine notes can be accredited as counterfeit money according to collected magnetic data by financial machine and tool, will so money-checking be caused to be calculated
There is the case where batch genuine notes are accidentally accredited as counterfeit money when identifying authenticity of banknotes in method.
Summary of the invention
A kind of magnetism amplitude compensation method and system, it is intended to solve in the prior art due to the big Mr. Yu's threshold range of magnetic spacing
When, the magnetic data of the collected genuine notes of magnetic sensor is decayed, thus the problem of genuine notes are accredited as counterfeit money.
The embodiment of the present invention in a first aspect, providing a kind of magnetic amplitude compensation method, which comprises
When magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through, by between magnetic detecting for spaces device measurement magnetic
Away from；
Large sample statistics is carried out by the correspondence magnetic spacing to the magnetic amplitude and measurement, obtains magnetic decaying width
The relational model of value and the magnetic spacing；
If presently described magnetic spacing belongs to preset range, calculated according to corresponding current magnetic amplitude and the relational model
Magnetic amplitude after compensating out.
The second aspect of the embodiment of the present invention provides a kind of magnetic amplitude compensation method, which comprises
When magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through, by between magnetic detecting for spaces device measurement magnetic
Away from；
Large sample statistics is carried out by the correspondence magnetic spacing to the magnetic amplitude and measurement, obtains magnetic decaying width
The relational model of value and the magnetic spacing, if presently described magnetic spacing belongs to preset range, according to the relational model, manually
Presently described magnetic spacing is adjusted.
The third aspect of the embodiment of the present invention provides a kind of magnetic amplitude compensation system, the system comprises: magnetic transducing
Device, magnetic detecting for spaces device and the first computing device, first computing device includes statistical module and compensating module；
The magnetic sensor is used to acquire the magnetic amplitude for the banknote that current stream passes through；
The magnetic detecting for spaces device is used to acquire the same of the magnetic amplitude for the banknote that current stream passes through in magnetic sensor
When, measure magnetic spacing；
The statistical module is used to carry out large sample system by the correspondence magnetic spacing to the magnetic amplitude and measurement
Meter, obtains the relational model of magnetic decaying amplitudes Yu the magnetic spacing；
If the compensating module belongs to preset range for presently described magnetic spacing, according to corresponding current magnetic amplitude and
The relational model calculates magnetic amplitude after compensation.
The fourth aspect of the embodiment of the present invention provides a kind of magnetic amplitude compensation system, the system comprises: magnetic transducing
Device, magnetic detecting for spaces device and the second computing device；
The magnetic sensor is used to acquire the magnetic amplitude for the banknote that current stream passes through；
The magnetic detecting for spaces device is used to acquire the same of the magnetic amplitude for the banknote that current stream passes through in magnetic sensor
When, measure magnetic spacing；
Second computing device is used to carry out full-page proof by the correspondence magnetic spacing to the magnetic amplitude and measurement
This statistics obtains the relational model of magnetic decaying amplitudes Yu the magnetic spacing, if presently described magnetic spacing belongs to preset range,
According to the relational model, manually presently described magnetic spacing is adjusted.
Existing beneficial effect is technical solution provided by the invention compared with prior art: due to adopting in magnetic sensor
While collecting the magnetic amplitude for the banknote that current stream passes through, increase magnetic detecting for spaces device measurement magnetic spacing, then by pair
Magnetic amplitude and the correspondence magnetic spacing of measurement carry out large sample statistics, obtain the relational model of magnetic decaying amplitudes Yu magnetic spacing；
So magnetic amplitude data is compensated or according to relational model, it is artificial it is purposive, pointedly adjust magnetic spacing, it is high
Effect solves the problems, such as that genuine notes are accredited as counterfeit money in the prior art.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the magnetic amplitude compensation method implementation flow chart that one embodiment of the invention provides；
Fig. 2 be another embodiment of the present invention provides magnetic amplitude compensation method implementation flow chart；
Fig. 3 be another embodiment of the present invention provides magnetic amplitude compensation system structure diagram；
Fig. 4 be another embodiment of the present invention provides magnetic amplitude compensation system structure diagram；
Fig. 5 be another embodiment of the present invention provides magnetic amplitude compensation system structure diagram；
Fig. 6 be another embodiment of the present invention provides magnetic amplitude compensation system structure diagram；
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
In being described below, for illustration and not for limitation, give many technical characteristics illustrates schematic diagram, so as to
It cuts thoroughly and understands the embodiment of the present invention.However, it will be clear to one skilled in the art that in the other realities for not having these details
It applies and the present invention also may be implemented in example.In other situations, the detailed description to well-known device and method is omitted, with
Exempt from unnecessary details and interferes description of the invention.
When in order to effectively solve Mr. Yu's threshold range big due to magnetic spacing in the prior art, magnetic sensor is collected true
The magnetic data of paper money is decayed, thus the problem of genuine notes are accredited as counterfeit money.Magnetism amplitude provided in an embodiment of the present invention is mended
Compensation method includes: to be measured when magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through by magnetic detecting for spaces device
Magnetic spacing；Large sample statistics is carried out by the correspondence magnetic spacing to the magnetic amplitude and measurement, obtains magnetic decaying width
The relational model of value and the magnetic spacing；If the magnetic spacing belongs to preset range, according to the magnetic amplitude and the pass
It is that model calculates magnetic amplitude after compensation, and then compensates to the collected magnetic amplitude.It carries out individually below detailed
It describes in detail bright.
Fig. 1 shows the magnetic amplitude compensation method implementation flow chart of one embodiment of the invention offer, and executing subject can
To be magnetic amplitude compensation system, for example, magnetic amplitude compensation systematic difference program.For ease of description, Fig. 1 is illustrated only
Part related to the embodiment of the present invention, process include step S101, S102 and S103, and details are as follows:
S101 is surveyed when magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through by magnetic detecting for spaces device
Measure magnetic spacing.
It should be noted that the various valuable tickets that the banknote in the embodiment of the present invention can be every country or area uses
Certificate is not specifically limited herein.
It should be noted that the specific position (such as RMB magnetic security line) due to banknote is made of special material,
Therefore obviously different from the background magnetism amplitude of ambient enviroment with the collected magnetic amplitude data of magnetic sensor.
It should be noted that magnetic spacing refers to the distance of magnetic sensor banknote into money-checking channel.
Optionally, magnetic detecting for spaces device is mounted on magnetic sensor, so that current in magnetic sensor acquisition
When the magnetic amplitude for the banknote that stream passes through, magnetic detecting for spaces device can be convenient for measuring magnetic spacing, and staff can be direct
Read the current magnetic spacing measured.
Optionally, magnetic detecting for spaces device is magnetic spacing to be measured using electromagnetic characteristics, such as can be infrared
Magnetic detecting for spaces device.
It should be noted that every overcurrent just acquires the magnetic amplitude of current banknote by a banknote, and measure magnetic spacing.
Optionally, using the magnetic amplitude of collected current banknote magnetic spacing corresponding with the current banknote measured as
One record is stored.
Optionally, the magnetic spacing data measured can be transferred in a manner of data frame format record data terminal or
Database or disk etc., i.e., every stream pass through a banknote transmission primaries magnetic spacing data.
It should be noted that measuring magnetic spacing using magnetic detecting for spaces device, specifically quantify usually that assembly crewman can only
Decide whether suitable magnetic spacing by range estimation judgement, so can it is purposive, targetedly change magnetic spacing, can also be with
Establish the quantitative relationship between magnetic amplitude and corresponding magnetic spacing.
S102 carries out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement, obtains magnetic decaying amplitudes
With the relational model of magnetic spacing.
It should be noted that due to banknote new and old, version not, the differences such as the degree of wear, even if two or multiple are same
The banknote (such as the 4th set of 100 yuan of RMB) of type, in the identical situation of magnetic spacing measured, magnetic sensor acquisition
The magnetic amplitude arrived is also different, therefore, says on stricti jurise, and one-to-one function is not present between magnetic amplitude and magnetic spacing
Relationship is certain " mapping " or " correspondence " therebetween.
Optionally, for the convenience of statistics, it is appropriate that the correspondence magnetic spacing number of magnetic amplitude data and measurement is made certain
Processing, for example, some is if collected magnetism amplitude some is 2300, some 2200 when magnetic spacing is 0.1 millimeter
2100, then magnetic amplitude can be sought into mean value, take 2200 as magnetic spacing be 0.1 millimeter when magnetic amplitude.It is so magnetic
One-to-one functional relation can be established between amplitude and magnetic spacing, although magnetic spacing is a discrete variable, carried out
It can be approximately that continuously, the relational model between the two finally established is continuous functional relation when large sample size counts,
A smooth curve is shown as under two-dimensional coordinate system, after counting according to large sample, the substantially trend of the curve (is not excluded for
Fuctuation within a narrow range) when to be magnetic spacing be 0, magnetic amplitude maximum, for example, 10000, magnetic spacing are (0, x1] when, magnetic amplitude declines
Deceleration is smaller, and magnetic amplitude has to decay by a small margin；Magnetic spacing is (x1,x2] when, magnetic amplitude attenuation speed increases, magnetic width
Value appearance decays by a relatively large margin；Magnetic spacing is (x2,x3] when, the rate of decay of magnetic amplitude becomes smaller, and magnetic amplitude slowly decays to
Environmental background value.
It should be noted that aforementioned section simply to illustrate that and illustrate, in fact, decaying of the magnetic amplitude with magnetic spacing
Variation is smooth curve, there is no magnetic spacing be some value when, magnetic amplitude mutate the case where, be less likely to be three
Variation in section, simply to illustrate that magnetic amplitude is variation, the attenuation curve with the slope of the attenuation curve of magnetic spacing
The case where half of curve (i.e. abscissa is greater than 0) right similar to standardized normal distribution.Aforementioned specific data are merely illustrative, number
Word is not true experimental data.
In fact, carrying out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement, what is obtained is " magnetic width
The relational model of value and magnetic spacing ", but be one with the variation of magnetic spacing according to foregoing description magnetism amplitude and dynamically decayed
Journey, and more importantly by the current collected magnetic amplitude for needing the magnetic amplitude compensated and being used to establish model
It is distinguished, Given this two o'clock, using the saying of " obtaining the relational model of magnetic decaying amplitudes Yu magnetic spacing ".
It should be noted that be used to establish the magnetic amplitude of model and corresponding magnetic spacing be by being got in many experiments,
It is also possible to get from the measurement data of a large amount of practical financial machine and tool for occurring for genuine notes being accredited as counterfeit money, should be used to establish mould
The magnetic amplitude of type and corresponding magnetic spacing are the sample datas for solving the problems, such as " genuine notes are accredited as counterfeit money ".
It should be noted that magnetic decaying amplitudes and the relational model of magnetic spacing can be mapping above-mentioned or corresponding,
It is also possible to certain functional relation obtained according to preceding method.
S103 is calculated if current magnetic spacing belongs to preset range according to corresponding current magnetic amplitude and relational model
Magnetic amplitude after compensation.
It should be noted that the magnetic spacing in S103, which belongs to preset range, refers to magnetic spacing not in the normal range, but
It is also to can compensate in range reasonably, such as the magnetic spacing normal range (NR) of certain automatic teller machine is [0.5,1] centimetre, is closed
The range that can compensate for of reason is [1,2] centimetre, if some magnetic spacing is 5 centimetres, then for this automatic teller machine, 5 lis
Not in the normal range, and 5 centimetres of magnetic spacing also not can compensate in range rice magnetic spacing rationally, can for such situation
To make magnetic spacing be maintained at normal range (NR) by manually adjusting magnetic spacing.The normal range (NR) restrictive condition are as follows: in this normal range (NR)
When, the collected magnetic data of magnetic sensor makes money-checking algorithm that genuine notes are accredited as to the ranges of genuine notes.Aforementioned specific data
It is merely illustrative, number is not true experimental data.
Optionally, " the compensation after compensating in magnetic amplitude is calculated according to corresponding current magnetic amplitude and relational model
Magnetic amplitude afterwards " is specifically obtained by current magnetic amplitude and using the magnetic decaying amplitudes convolution that the relational model is sought, example
Such as, current magnetic spacing is 1.5 centimetres, when measuring 1.5 centimetres of magnetic spacing, and collecting corresponding current magnetic amplitude is 2500, and
And in the relational model for obtaining 1.5 centimetres of substitution S102 steps, obtaining " the magnetic decaying amplitudes that relational model is sought " is
2450, the magnetic decaying amplitudes 2450 that corresponding current magnetic amplitude 2500 is sought with relational model are subjected to convolutional calculation and go out to compensate
Magnetic amplitude afterwards, for example, 2800, it is assumed that when 2800 magnetic amplitude can guarantee that genuine notes pass through, genuine notes are accredited as by money-checking algorithm
Genuine notes, although becoming larger due to assembling magnetic spacing in unreasonable or use process and collected magnetic amplitude being caused to reduce,
Magnetic amplitude can guarantee that genuine notes are accredited as genuine notes by money-checking algorithm after overcompensation.
Optionally, " the compensation after compensating in magnetic amplitude is calculated according to corresponding current magnetic amplitude and relational model
Magnetic amplitude afterwards " specifically: search current magnetic amplitude in the table established using relational model by current magnetic amplitude and need
The coefficient multiplied or the basic magnetic amplitude constant for needing to add, by current magnetic amplitude multiplied by coefficient or current magnetism amplitude plus base
The result that this magnetism amplitude constant obtains is magnetic amplitude after compensating.For example, current magnetic spacing is 1.5 centimetres, 1.5 are measured
When centimetre magnetic spacing, collecting corresponding current magnetic amplitude is 2500, finds coefficient in the table established using relational model
It is 300 for 1.12 or constant, magnetic amplitude is after current magnetic amplitude 2500 is calculated compensation multiplied by 1.12 or plus 300
2800, it is assumed that when 2800 magnetic amplitude can guarantee that genuine notes pass through, genuine notes are accredited as genuine notes by money-checking algorithm, although due to assembly
Magnetic spacing becomes larger and collected magnetic amplitude is caused to reduce in unreasonable or use process, but magnetic after also passing through compensation
Amplitude can guarantee that genuine notes are accredited as genuine notes by money-checking algorithm.
Optionally, mangetic compensation method further includes verifying to amplitude magnetic after compensation.To amplitude magnetic after compensation
It carries out verifying and belongs to the prior art, only briefly describe herein, for example, it is put into 100 yuan of genuine notes tickets of several the 5th set of RMB now,
It examines money-checking algorithm whether can be unreasonable because of magnetic spacing, is counterfeit money by banknote evaluation, if by test of many times, money-checking algorithm
Being accredited as is genuine notes, then illustrates to compensate successfully.
It should be noted that verifying the probability that can reduce money-checking mistake to amplitude magnetic after compensation, avoid to people
Bring unnecessary risk, ensure normal marketing.
The embodiment of the present invention provides a kind of magnetic amplitude compensation method, due to acquiring what current stream passed through in magnetic sensor
While the magnetic amplitude of banknote, magnetic detecting for spaces device measurement magnetic spacing is increased, then by magnetic amplitude and measurement
Correspondence magnetic spacing carry out large sample statistics, obtain the relational model of magnetic decaying amplitudes Yu magnetic spacing；So to magnetic amplitude
Data compensate or according to relational models, it is artificial it is purposive, pointedly adjust magnetic spacing, efficiently solve the prior art
Middle the problem of genuine notes are accredited as counterfeit money.
Fig. 2 shows another embodiment of the present invention provides magnetic amplitude compensation method implementation flow chart, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown by Fig. 2, and process includes step S201 and S202, and details are as follows:
S201 is surveyed when magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through by magnetic detecting for spaces device
Measure magnetic spacing.
It should be noted that all explanations are identical as former approach embodiment in this step S201, details are not described herein.
S202 carries out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement, obtains magnetic decaying amplitudes
With the relational model of magnetic spacing, if current magnetic spacing belongs to preset range, according to relational model, manually to current magnetic spacing into
Row adjustment.
It should be noted that " carrying out full-page proof by the correspondence magnetic spacing to magnetic amplitude and measurement about in step S202
This statistics obtains the relational model of magnetic decaying amplitudes and magnetic spacing " explanation it is identical as former approach embodiment, herein no longer
It repeats.
If current magnetic spacing belongs to preset range, according to relational model, manually current magnetic spacing is adjusted.
It should be noted that for example current magnetic spacing is 1.5 centimetres, from being concerned about in model table it is found that 1.5 centimetres of magnetic spacing
When corresponding magnetic amplitude be 2500, magnetic spacing when being 1.3 centimetres corresponding magnetism amplitude be 2800, it is assumed that 2800 magnetic width
When value can guarantee that genuine notes pass through, genuine notes are accredited as genuine notes by money-checking algorithm, can be manually adjusted at this time to this magnetic spacing, probably
0.2 centimetre is reduced, that is, magnetic amplitude may make to change near 2800, therefore also can solve due to assembling unreasonable or using
Magnetic spacing becomes larger and eventually leads to the problem of genuine notes are accredited as counterfeit money in the process, and comparatively, manually adjusts and eliminate
A part of cumbersome calculating process, controllability are preferable.
Optionally, mangetic compensation method further includes carrying out to collected magnetic amplitude after manually adjusting the magnetic spacing
Verifying.Belong to the prior art to manually adjusting collected magnetic amplitude after the magnetic spacing and carrying out verifying, herein only briefly
It is bright, for example, being put into 100 yuan of genuine notes tickets of several the 5th set of RMB now, examine whether money-checking algorithm can not conform to because of magnetic spacing
Reason then illustrates banknote evaluation to compensate successfully for counterfeit money if it is genuine notes that money-checking algorithm, which is accredited as, by test of many times,
The collected magnetic amplitude data of magnetic sensor and magnetic spacing data adjusted can also be read simultaneously, and manually adjusted
When 0.2 centimetre of magnetic amount of separation substantially compared.
It should be noted that testing manually adjusting the collected magnetic amplitude after magnetic spacing and verifying to reduce
The probability of paper money mistake avoids bringing unnecessary risk, ensures normal marketing.
Fig. 3 show another embodiment of the present invention provides magnetic amplitude compensation system structure diagram.For the ease of saying
Bright, only parts related to embodiments of the present invention are shown by Fig. 3.The exemplary magnetic amplitude compensation system of Fig. 3 includes magnetic transducing
Device 301, magnetic detecting for spaces device 302 and the first computing device 303, the first computing device 303 include statistical module 401 and compensation
Module 402, in which:
Magnetic sensor 301, for acquiring the magnetic amplitude for the banknote that current stream passes through.
It should be noted that the various valuable tickets that the banknote in the embodiment of the present invention can be every country or area uses
Certificate is not specifically limited herein.
It should be noted that the specific position (such as RMB magnetic security line) due to banknote is made of special material,
Therefore obviously different from the background magnetism amplitude of ambient enviroment with the collected magnetic amplitude data of magnetic sensor 301.
Magnetic detecting for spaces device 302, for acquiring the magnetic amplitude for the banknote that current stream passes through in magnetic sensor 301
When, measure magnetic spacing.
It should be noted that magnetic spacing refers to the distance of magnetic sensor banknote into money-checking channel.
Optionally, magnetic detecting for spaces device 302 is mounted on magnetic sensor 301, so that in magnetic sensor 301
When acquiring the magnetic amplitude for the banknote that current stream passes through, magnetic detecting for spaces device 302 can be convenient for measuring magnetic spacing, and the people that works
The current magnetic spacing measured can be read directly in member.
Optionally, magnetic detecting for spaces device 302 is magnetic spacing to be measured using electromagnetic characteristics, such as can be red
Outer magnetic detecting for spaces device.
It should be noted that every overcurrent just acquires the magnetic amplitude of current banknote by a banknote magnetic sensor 301,
And magnetic spacing is measured by magnetic detecting for spaces device 302.
Optionally, by the magnetic amplitude of the collected current banknote of magnetic sensor 301 and magnetic detecting for spaces device 302
The current banknote measured corresponds to magnetic spacing and is stored as a record.
Optionally, the magnetic spacing data that magnetic detecting for spaces device 302 measures can be transmitted in a manner of data frame format
To the terminal or database or disk etc. of record data, i.e., every stream passes through a banknote transmission primaries magnetic spacing data.
It should be noted that measuring magnetic spacing using magnetic detecting for spaces device 302, usually assembly crewman is specifically quantified
Can decide whether suitable magnetic spacing by range estimation judgement, so can it is purposive, targetedly change magnetic spacing, can also
With the quantitative relationship established between magnetic amplitude and corresponding magnetic spacing.
Statistical module 401 obtains magnetic for carrying out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement
The relational model of property decaying amplitudes and magnetic spacing.
It should be noted that due to banknote new and old, version not, the differences such as the degree of wear, even if two or multiple are same
The banknote (such as the 4th set of 100 yuan of RMB) of type, in the identical situation of the magnetic spacing that magnetic detecting for spaces device 302 measures
Under, the collected magnetic amplitude of magnetic sensor 301 is also different, therefore, says on stricti jurise, between magnetic amplitude and magnetic spacing
There is no one-to-one functional relations, are therebetween certain " mapping " or " correspondence ".
Optionally, for the convenience of statistics, it is appropriate that the correspondence magnetic spacing number of magnetic amplitude data and measurement is made certain
Processing, for example, having if the collected magnetic amplitude some of magnetic detecting for spaces device 302 is 2300 when magnetic spacing is 0.1 millimeter
Be 2200, magnetic amplitude then can be sought mean value by some 2100, take 2200 as magnetic spacing be 0.1 millimeter when magnetic
Property amplitude.So magnetism amplitude and magnetic spacing between can establish one-to-one functional relation, although magnetic spacing be one from
Variable is dissipated, but when carrying out large sample size statistics, can be approximately continuously, the relational model between the two finally established is
Continuous functional relation shows as a smooth curve, after counting according to large sample, the curve under two-dimensional coordinate system
For substantially trend (being not excluded for fuctuation within a narrow range) when be magnetic spacing be 0, magnetic amplitude maximum, for example, 10000, magnetic spacing are (0, x1]
When, the rate of decay of magnetic amplitude is smaller, and magnetic amplitude has to decay by a small margin；Magnetic spacing is (x1,x2] when, magnetic amplitude attenuation
Speed increases, and magnetic amplitude appearance decays by a relatively large margin；Magnetic spacing is (x2,x3] when, the rate of decay of magnetic amplitude becomes smaller, magnetic
Property amplitude slowly decays to environmental background value.It should be noted that aforementioned section simply to illustrate that and illustrate, in fact, magnetic
Property amplitude with the attenuation change of magnetic spacing be smooth curve, when there is no magnetic spacing being some value, magnetic amplitude mutates
The case where, the variation being less likely to be in three sections, simply to illustrate that magnetic amplitude with magnetic spacing attenuation curve it is oblique
The case where rate is variation, which is similar to the right one side of something curve of standardized normal distribution (i.e. abscissa is greater than 0).Aforementioned tool
Volume data is merely illustrative, and number is not true experimental data.
In fact, carrying out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement, what is obtained is " magnetic width
The relational model of value and magnetic spacing ", but be one with the variation of magnetic spacing according to foregoing description magnetism amplitude and dynamically decayed
Journey, and more importantly by the magnetic amplitude that currently collected needs are compensated of magnetic detecting for spaces device 302 and be used to
The magnetic amplitude for establishing model is distinguished, Given this two o'clock, using " obtaining the relationship mould of magnetic decaying amplitudes Yu magnetic spacing
The saying of type ".
It should be noted that be used to establish the magnetic amplitude of model and corresponding magnetic spacing be by being got in many experiments,
It is also possible to get from the measurement data of a large amount of practical financial machine and tool for occurring for genuine notes being accredited as counterfeit money, should be used to establish mould
The magnetic amplitude of type and corresponding magnetic spacing are the sample datas for solving the problems, such as " genuine notes are accredited as counterfeit money ".
It should be noted that magnetic decaying amplitudes and the relational model of magnetic spacing can be mapping above-mentioned or corresponding,
It is also possible to certain functional relation obtained according to preceding method.
Compensating module 402, if belonging to preset range for current magnetic spacing, according to corresponding current magnetic amplitude and relationship
Model calculates magnetic amplitude after compensation.
It should be noted that magnetic spacing, which belongs to preset range, refers to magnetic spacing not in the normal range, but it is also to
It reasonably can compensate in range, such as the magnetic spacing normal range (NR) of certain automatic teller machine is [0.5,1] centimetre, can reasonably be mended
Repaying range is [1,2] centimetre, if some magnetic spacing is 5 centimetres, then for this automatic teller machine, 5 centimetres of magnetic spacing
Not in the normal range, and 5 centimetres of magnetic spacing also not can compensate in range rationally, can be by artificial for such situation
Magnetic spacing is adjusted, magnetic spacing is made to be maintained at normal range (NR).The normal range (NR) restrictive condition are as follows: magnetic in this normal range (NR)
The collected magnetic data of sensor makes money-checking algorithm that genuine notes are accredited as to the ranges of genuine notes.Aforementioned specific data are only illustrated
Illustrate, number is not true experimental data.
Optionally, compensating module 402 calculates magnetic width after compensating according to corresponding current magnetic amplitude and relational model
" magnetic amplitude after compensation " in value is specifically by current magnetic amplitude and the magnetic decaying amplitudes sought using the relational model
Convolution obtains, for example, current magnetic spacing is 1.5 centimetres, when measuring 1.5 centimetres of magnetic spacing, collects corresponding current magnetic width
Value is 2500, and in 1.5 centimetres of obtained relational models of substitution S102 steps, will obtain that " magnetism that relational model is sought declines
Amount of decrease value " is 2450, the magnetic decaying amplitudes that compensating module 402 seeks corresponding current magnetic amplitude 2500 with relational model
Magnetic amplitude after 2450 progress convolutional calculations compensate out, for example, 2800, it is assumed that 2800 magnetic amplitude can guarantee that genuine notes pass through
When, genuine notes are accredited as genuine notes by money-checking algorithm, although becoming larger due to assembling magnetic spacing in unreasonable or use process and causing to adopt
The magnetic amplitude collected reduces, but magnetic amplitude can guarantee that genuine notes are accredited as genuine notes by money-checking algorithm after overcompensation.
Optionally, compensating module 402 calculates magnetic width after compensating according to corresponding current magnetic amplitude and relational model
" magnetic amplitude after compensation " in value specifically: current magnetic is searched in the table established using relational model by current magnetic amplitude
Property amplitude need the coefficient that multiplies or need plus basic magnetic amplitude constant, compensating module 402 is by current magnetic amplitude multiplied by being
The result that several or current magnetic amplitude is obtained plus basic magnetic amplitude constant is magnetic amplitude after compensating.For example, current magnetic
Spacing is 1.5 centimetres, when measuring 1.5 centimetres of magnetic spacing, and collecting corresponding current magnetic amplitude is 2500, is utilizing relationship mould
Find that coefficient is 1.12 or constant is 300 in the table that type is established, compensating module 402 will current magnetic amplitude 2500 multiplied by 1.12
Or magnetic amplitude is 2800 after plus 300 calculating compensation, it is assumed that when 2800 magnetic amplitude can guarantee that genuine notes pass through, money-checking is calculated
Genuine notes are accredited as genuine notes by method, although becoming larger due to assembling magnetic spacing in unreasonable or use process and leading to collected magnetism
Amplitude reduces, but magnetic amplitude can guarantee that genuine notes are accredited as genuine notes by money-checking algorithm after also passing through compensation.
It should be noted that shown in figure 3 above another embodiment of the present invention provides magnetic amplitude compensation system reality
It applies in mode, for convenience and simplicity of description, is only carried out with the division of above-mentioned each functional device and module for example, actually answering
It can according to need in, such as the convenient of realization of configuration requirement or software of corresponding hardware considers, and by above-mentioned function
Distribution is completed by different functional devices and module, i.e., the internal structure of magnetic amplitude compensation system is divided into different devices
And functional module, to complete all or part of the functions described above.Moreover, in practical application, it is corresponding in the present embodiment
Device and functional module can be by corresponding hardware realization, corresponding software can also be executed by corresponding hardware and completed,
For example, statistical module, can be the hardware with statistical function, such as counter, it is also possible to be able to carry out corresponding computer
Program is to complete the general processor or other hardware devices of decision-making function, and the corresponding function module in the present embodiment
It can carry out corresponding change to be located in one or more embodiment devices different from the present embodiment, may be alternatively located at the same embodiment
Before or after middle different function module (connection relationship for referring to functional module).In addition, the specific name of each functional module also only
It is the protection scope that is not intended to limit this application for the ease of mutually distinguishing.(each embodiment that this specification provides all may be used
Using foregoing description principle).
Magnetic amplitude compensation system shown in Fig. 3 can also include the first verifying device 501, as Fig. 4 shows the present invention
The magnetic amplitude compensation system structure diagram that another embodiment provides.
First verifying device 501, for being verified to amplitude magnetic after the compensation.
It should be noted that magnetic amplitude carries out verifying and belongs to the prior art after 501 pairs of device compensation of the first verifying, herein
It only briefly describes, for example, being put into 100 yuan of genuine notes tickets of several the 5th set of RMB now, examines money-checking algorithm whether can be because of magnetic
Spacing is unreasonable, and banknote evaluation is then illustrated for counterfeit money if it is genuine notes that money-checking algorithm, which is accredited as, by test of many times
It compensates successfully.
It should be noted that magnetic amplitude is verified and can reduce money-checking mistake after 501 pairs of device compensation of the first verifying
Probability, avoid bringing unnecessary risk, ensure normal marketing.
Fig. 5 show another embodiment of the present invention provides magnetic amplitude compensation system structure diagram.For the ease of saying
Bright, only parts related to embodiments of the present invention are shown by Fig. 5.The exemplary magnetic amplitude compensation system of Fig. 5 includes magnetic transducing
Device 301, magnetic detecting for spaces device 302 and the second computing device 601, in which:
Magnetic sensor 301, for acquiring the magnetic amplitude for the banknote that current stream passes through.
It should be noted that explanation is identical as previous system embodiment herein, details are not described herein.
Magnetic detecting for spaces device 302, for acquiring the magnetic amplitude for the banknote that current stream passes through in magnetic sensor 301
When, measure magnetic spacing.
It should be noted that explanation is identical as previous system embodiment herein, details are not described herein.
Second computing device 601 is obtained for carrying out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement
To the relational model of magnetic decaying amplitudes and the magnetic spacing, if current magnetic spacing belongs to preset range, according to relational model,
Manually current magnetic spacing is adjusted.
It should be noted that due to banknote new and old, version not, the differences such as the degree of wear, even if two or multiple are same
The banknote (such as the 4th set of 100 yuan of RMB) of type, in the identical situation of the magnetic spacing that magnetic detecting for spaces device 302 measures
Under, the collected magnetic amplitude of magnetic sensor 301 is also different, therefore, says on stricti jurise, between magnetic amplitude and magnetic spacing
There is no one-to-one functional relations, are therebetween certain " mapping " or " correspondence ".
Optionally, for the convenience of statistics, it is appropriate that the correspondence magnetic spacing number of magnetic amplitude data and measurement is made certain
Processing, for example, having if the collected magnetic amplitude some of magnetic detecting for spaces device 302 is 2300 when magnetic spacing is 0.1 millimeter
Be 2200, magnetic amplitude then can be sought mean value by some 2100, take 2200 as magnetic spacing be 0.1 millimeter when magnetic
Property amplitude.So magnetism amplitude and magnetic spacing between can establish one-to-one functional relation, although magnetic spacing be one from
Variable is dissipated, but when carrying out large sample size statistics, can be approximately continuously, the relational model between the two finally established is
Continuous functional relation shows as a smooth curve, after counting according to large sample, the curve under two-dimensional coordinate system
For substantially trend (being not excluded for fuctuation within a narrow range) when be magnetic spacing be 0, magnetic amplitude maximum, for example, 10000, magnetic spacing are (0, x1]
When, the rate of decay of magnetic amplitude is smaller, and magnetic amplitude has to decay by a small margin；Magnetic spacing is (x1,x2] when, magnetic amplitude attenuation
Speed increases, and magnetic amplitude appearance decays by a relatively large margin；Magnetic spacing is (x2,x3] when, the rate of decay of magnetic amplitude becomes smaller, magnetic
Property amplitude slowly decays to environmental background value.It should be noted that aforementioned section simply to illustrate that and illustrate, in fact, magnetic
Property amplitude with the attenuation change of magnetic spacing be smooth curve, when there is no magnetic spacing being some value, magnetic amplitude mutates
The case where, the variation being less likely to be in three sections, simply to illustrate that magnetic amplitude with magnetic spacing attenuation curve it is oblique
The case where rate is variation, which is similar to the right one side of something curve of standardized normal distribution (i.e. abscissa is greater than 0).Aforementioned tool
Volume data is merely illustrative, and number is not true experimental data.
In fact, carrying out large sample statistics by the correspondence magnetic spacing to magnetic amplitude and measurement, what is obtained is " magnetic width
The relational model of value and magnetic spacing ", but be one with the variation of magnetic spacing according to foregoing description magnetism amplitude and dynamically decayed
Journey, and more importantly by the magnetic amplitude that currently collected needs are compensated of magnetic detecting for spaces device 302 and be used to
The magnetic amplitude for establishing model is distinguished, Given this two o'clock, using " obtaining the relationship mould of magnetic decaying amplitudes Yu magnetic spacing
The saying of type ".
It should be noted that be used to establish the magnetic amplitude of model and corresponding magnetic spacing be by being got in many experiments,
It is also possible to get from the measurement data of a large amount of practical financial machine and tool for occurring for genuine notes being accredited as counterfeit money, should be used to establish mould
The magnetic amplitude of type and corresponding magnetic spacing are the sample datas for solving the problems, such as " genuine notes are accredited as counterfeit money ".
It should be noted that magnetic decaying amplitudes and the relational model of magnetic spacing can be mapping above-mentioned or corresponding,
It is also possible to certain functional relation obtained according to preceding method.
If current magnetic spacing belongs to preset range, according to relational model, manually current magnetic spacing is adjusted.
It should be noted that for example current magnetic spacing is 1.5 centimetres, from being concerned about in model table it is found that 1.5 centimetres of magnetic spacing
When corresponding magnetic amplitude be 2500, magnetic spacing when being 1.3 centimetres corresponding magnetism amplitude be 2800, it is assumed that 2800 magnetic width
When value can guarantee that genuine notes pass through, genuine notes are accredited as genuine notes by money-checking algorithm, can be manually adjusted at this time to this magnetic spacing, probably
0.2 centimetre is reduced, that is, magnetic amplitude may make to change near 2800, therefore also can solve due to assembling unreasonable or using
Magnetic spacing becomes larger and eventually leads to the problem of genuine notes are accredited as counterfeit money in the process, and comparatively, manually adjusts and eliminate
A part of cumbersome calculating process, controllability are preferable.
Magnetic amplitude compensation system shown in Fig. 5 can also include the second verifying device 701, as Fig. 6 shows the present invention
The magnetic amplitude compensation system structure diagram that another embodiment provides.Second verifying device 701, between manually adjusting magnetic
It is verified away from the rear collected magnetic amplitude.
It should be noted that the second verifying device 701 tests collected magnetic amplitude after manually adjusting magnetic spacing
Card belongs to the prior art, only briefly describes herein, for example, being put into 100 yuan of genuine notes tickets of several the 5th set of RMB now, inspection is tested
Whether paper money algorithm can be unreasonable because of magnetic spacing, is counterfeit money by banknote evaluation, if money-checking algorithm is reflected by test of many times
Being set to is genuine notes, then illustrates to compensate successfully, while can also read the collected magnetic amplitude data of magnetic sensor and tune
Magnetic spacing data after whole is substantially compared with 0.2 centimetre of magnetic amount of separation when manually adjusting.
It should be noted that the second verifying device 701 to manually adjust after magnetic spacing the collected magnetic amplitude into
Row verifying can reduce the probability of money-checking mistake, avoid bringing unnecessary risk, ensure normal marketing.
It should be noted that the words such as " first ", " second " involved in all embodiments of the invention, such as the first verifying dress
Set, second verifying device etc. is only herein the convenience stated and referred to, be not meant in specific implementation of the invention
Centainly have corresponding first verifying device and the second verifying device.
It should be noted that the contents such as information exchange, implementation procedure in above-mentioned apparatus embodiment between each module/unit
And embodiment entire content, due to being based on same design, bring technical effect and the present invention with embodiment of the present invention method
Embodiment of the method is identical, and particular content can be found in the narration in one embodiment of the method for the present invention, and details are not described herein again.
Those of ordinary skill in the art be further appreciated that implement the method for the above embodiments be can
It is completed with instructing relevant hardware by program, the program can be stored in a computer-readable storage medium
In, described storage medium, including ROM/RAM, disk, CD etc..
The above content is the specific preferred embodiments of combination to further detailed made by the principle of the invention and embodiment
It describes in detail bright, and it cannot be said that specific implementation of the invention is only limited to these instructions, is merely used to help understand method of the invention
And its core concept；Meanwhile for those of ordinary skill in the art to which the present invention belongs, present inventive concept is not being departed from
Under the premise of make several equivalent substitute or obvious modifications, and performance or use is identical, all shall be regarded as belonging to the present invention by
The scope of patent protection that the claims submitted determine.
Claims (10)
1. a kind of magnetism amplitude compensation method, which is characterized in that the described method includes:
In the magnetic amplitude for the banknote that magnetic sensor acquisition passes through, magnetic spacing is measured by magnetic detecting for spaces device；
By carrying out large sample statistics to the magnetic amplitude and the correspondence magnetic spacing of measurement, obtain magnetic decaying amplitudes with
The relational model of the magnetic spacing, the coefficient for needing to multiply using the current magnetic amplitude of relational model foundation or the base for needing to add
This magnetism amplitude constant table；
If presently described magnetic spacing belongs to preset range, benefit is calculated according to corresponding current magnetic amplitude and the relational model
Magnetic amplitude after repaying, specifically: the current magnetic amplitude needs are searched in the table established using the relational model
The coefficient or the basic magnetic amplitude constant for needing to add multiplied adds current magnetic amplitude multiplied by coefficient or current magnetic amplitude
Upper basic magnetic amplitude constant obtains compensated magnetic amplitude；The magnetic spacing belongs to preset range and refers between the magnetic
Away from not in the normal range, but can compensate in range in magnetic amplitude；Wherein, when the magnetic spacing is in the normal range (NR)
When, the collected magnetic data of magnetic sensor makes money-checking algorithm that genuine notes are accredited as genuine notes.
2. the method as described in claim 1, which is characterized in that after the compensation magnetic amplitude by the current magnetic amplitude and
It is obtained using the magnetic decaying amplitudes convolution that the relational model is sought.
3. method according to claim 1 or 2, which is characterized in that the method also includes:
Amplitude magnetic after the compensation is verified.
4. a kind of magnetism amplitude compensation method, which is characterized in that the described method includes:
In the magnetic amplitude for the banknote that magnetic sensor acquisition passes through, magnetic spacing is measured by magnetic detecting for spaces device；
By carrying out large sample statistics to the magnetic amplitude and the correspondence magnetic spacing of measurement, obtain magnetic decaying amplitudes with
The relational model of the magnetic spacing, the coefficient for needing to multiply using the current magnetic amplitude of relational model foundation or the base for needing to add
This magnetism amplitude constant table；If presently described magnetic spacing belongs to preset range, in the table established using the relational model
The middle coefficient or the basic magnetic amplitude constant for needing to add searched the current magnetic amplitude and need to multiply, will current magnetic width
Value adds basic magnetic amplitude constant multiplied by coefficient or current magnetic amplitude, compensated magnetic amplitude is obtained, manually to current
The magnetic spacing is adjusted；The magnetic spacing belongs to preset range and refers to the magnetic spacing not in the normal range, still
It can compensate in range in magnetic amplitude；Wherein, when the magnetic spacing is in the normal range (NR), magnetic sensor is collected
Magnetic data makes money-checking algorithm that genuine notes are accredited as genuine notes.
5. method as claimed in claim 4, which is characterized in that the method also includes:
The collected magnetic amplitude after manually adjusting the magnetic spacing is verified.
6. a kind of magnetism amplitude compensation system, which is characterized in that the system comprises: magnetic sensor, magnetic detecting for spaces device
With the first computing device, first computing device includes statistical module and compensating module；
The magnetic sensor is used to acquire the magnetic amplitude of the banknote passed through；
The magnetic detecting for spaces device is used in the magnetic amplitude for the banknote that magnetic sensor acquisition stream passes through, between measurement magnetic
Away from；
The statistical module is used to carry out large sample statistics by the correspondence magnetic spacing to the magnetic amplitude and measurement, obtains
To the relational model of magnetic decaying amplitudes and the magnetic spacing, establish what current magnetic amplitude needed to multiply using the relational model
Coefficient or the basic magnetic amplitude constant table for needing to add；
If the compensating module belongs to preset range for presently described magnetic spacing, according to corresponding current magnetic amplitude and described
Relational model calculates magnetic amplitude after compensation, specifically: described in being searched in the table established using the relational model
The coefficient or the basic magnetic amplitude constant for needing to add that currently magnetism amplitude needs to multiply, by current magnetic amplitude multiplied by coefficient
Or current magnetic amplitude adds basic magnetic amplitude constant, obtains compensated magnetic amplitude；The magnetic spacing belongs to default model
It encloses and refers to the magnetic spacing not in the normal range, but can compensate in range in magnetic amplitude；Wherein, when the magnetic spacing
When in the normal range (NR), the collected magnetic data of magnetic sensor makes money-checking algorithm that genuine notes are accredited as genuine notes.
7. system as claimed in claim 6, which is characterized in that after the compensation magnetic amplitude by the current magnetic amplitude and
It is obtained using the magnetic decaying amplitudes convolution that the relational model is sought.
8. system as claimed in claims 6 or 7, which is characterized in that the system also includes first verifying device, described first
Verifying device is used to verify amplitude magnetic after the compensation.
9. a kind of magnetism amplitude compensation system, which is characterized in that the system comprises: magnetic sensor, magnetic detecting for spaces device
With the second computing device；
The magnetic sensor is used to acquire the magnetic amplitude of the banknote currently passed through；
The magnetic detecting for spaces device is used for when magnetic sensor acquires the magnetic amplitude for the banknote that current stream passes through, and measures magnetic
Spacing；
Second computing device is used to carry out large sample system by the correspondence magnetic spacing to the magnetic amplitude and measurement
Meter, obtains the relational model of magnetic decaying amplitudes Yu the magnetic spacing, and establishing current magnetic amplitude using the relational model needs
The coefficient to be multiplied or the basic magnetic amplitude constant table for needing to add；If presently described magnetic spacing belongs to preset range, institute is being utilized
It states and searches coefficient or the basic magnetic for needing to add that the current magnetic amplitude needs to multiply in the table of relational model foundation
Property amplitude constant, current magnetic amplitude multiplied by coefficient or current magnetic amplitude is added into basic magnetic amplitude constant, is compensated
Magnetic amplitude afterwards is manually adjusted presently described magnetic spacing；The magnetic spacing belongs to preset range and refers to the magnetic
Spacing not in the normal range, but can compensate in range in magnetic amplitude；Wherein, when the magnetic spacing is in the normal range (NR)
When interior, the collected magnetic data of magnetic sensor makes money-checking algorithm that genuine notes are accredited as genuine notes.
10. system as claimed in claim 9, which is characterized in that the system also includes the second verifying devices, and described second tests
Card device is used to verify the collected magnetic amplitude after manually adjusting the magnetic spacing.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007087179A3 (en) * | 2006-01-12 | 2008-02-14 | Timken Us Corp | Magnetic sensor with compensation |
| CN102483345A (en) * | 2009-07-23 | 2012-05-30 | 梅特勒-托利多公开股份有限公司 | Method For Correcting The Temperature Of A Force Measuring Apparatus And Force Measuring Apparatus |
| CN105929019A (en) * | 2016-05-31 | 2016-09-07 | 武汉华宇目检测装备有限公司 | Non-contact steel pipe flux leakage detection probe system |
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| CN105427446A (en) * | 2015-11-06 | 2016-03-23 | 东方通信股份有限公司 | Authentic identification method for paper money based on magnetic signal |
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| WO2007087179A3 (en) * | 2006-01-12 | 2008-02-14 | Timken Us Corp | Magnetic sensor with compensation |
| CN102483345A (en) * | 2009-07-23 | 2012-05-30 | 梅特勒-托利多公开股份有限公司 | Method For Correcting The Temperature Of A Force Measuring Apparatus And Force Measuring Apparatus |
| CN105929019A (en) * | 2016-05-31 | 2016-09-07 | 武汉华宇目检测装备有限公司 | Non-contact steel pipe flux leakage detection probe system |
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