CN1179843A - Method and devices for checking security documents - Google Patents
Method and devices for checking security documents Download PDFInfo
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- CN1179843A CN1179843A CN96192929A CN96192929A CN1179843A CN 1179843 A CN1179843 A CN 1179843A CN 96192929 A CN96192929 A CN 96192929A CN 96192929 A CN96192929 A CN 96192929A CN 1179843 A CN1179843 A CN 1179843A
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Abstract
The invention concerns a method and devices for checking security documents. According to this process which uses known capacitive coupling, electrical signals are transmitted by transmitting antennae via electrically conductive security features to receiving antennae and amplified. The amplitude responses and time characteristics of the electrical signals are then evaluated and compared with existing signal responses, by being converted into signal responses having easily comparable parameters. In order to enable the testing arrangement to be specifically selective, a selective amplifier is additionally coupled to the evaluation electronics.
Description
The present invention relates to the method and apparatus of checking security documents.Determine security document authenticity, the location in monitoring workability, the cash inspecting machine and coin kind determine and processing miscellaneous, equipment, method and the checking system of counting are that everybody is familiar with.DE-PS 1223594 has described a kind of recording medium condenser type scanning device, and the probe electrode that sweep capacitor is arranged by recording medium track both sides in this equipment is formed.The scanning reliability of this equipment does not disclose striped, band or other the particle about the conduction of that pack into, that be pressed into or coating.
In DE-PS 1774290, described in the validity check equipment of bank note, by means of capacity coupled a kind of feature that grid shape is arranged electrode, the measuring equipment of the automatic analyzing and processing of mark bank note.This measuring equipment that everybody is familiar with requires under the situation of process velocity in today, can not accurately find out relevant signature, even under check system more slowly, also can only determine to exist a kind of like this mark, therefore, to present known forgery, when for example using conductive compositions in the bank note, it is inefficient.
In DE-OS 2619457, measured the magnetic of the check striped that exists in the bank note.DE-PS 2834287 has described with applying the validity check of magnetic field to the ferromagnetism anti-counterfeiting line in paper currency printing.This method of inspection is too slow, and requires checked object or check striped are accurately located all the time.DE-PS 2760165 has described a kind of inspection machine of technical costliness, at this equipment, especially finds out the authenticity of bank note at second testing stage to measure difference in thickness and fluorescent characteristic mode.Only check this specific character no longer to be adapted to the situation of popular now counterfeit money.To having the counterfeit money of watermark decorative pattern and fluorescent paper or color, no longer be identified as false with this equipment.
The cash inspecting machine that read head in the cash inspecting machine of also describing except that other in DE-OS 3236373 and 3236374 both be not suitable for quick operation is not suitable for the popular now Euro notes of check yet, the mark of this cash inspecting machine on security document formed capacitor, causes that by insert ferroelectrics between the capacitance electrode of reading machine electric capacity necessarily changes.
The oscillator and the oscillatory circuit off resonance that provide by means of DE 2912712, the anti-counterfeiting line of indication conduction is owing to analyze that reliability is low, technical fee is high and complex structure and be not people's acceptance.
At US 5,308, described the measurement mechanism that constitutes by optical sensor and capacitive transducer in 992, yet its requires the accurate location of check striped.For the reliability that improves error with distinguish that various checked objects (for example various bank note) propose the additional application Magnetic Sensor, this makes the measurement mechanism structure more complicated and expensive.Capacitive transducer can only confirm to conduct electricity the existence of anti-counterfeiting line after the bank note preliminary election.
According to DE 4103832 described verifying attachments is that everybody is familiar with, and arranges capacitive transducer and/or photoelectric sensor and/or millimeter wave sensor to be used for check by means of it along the check section.In addition, the check of the dielectric property of bank note is this civilian object.
The method of inspection that these are familiar with and the shortcoming of equipment at first are that in order to find out counterfeit money in the speed of rapid screening in the coin cash inspecting machine bank note process, technical cost and reliability that it is high are not high.The shortcoming of the measurement mechanism of known check capacitance characteristic is only in the low frequency ranges of regulation, from 10 to 220kHz, and only under the situation of minimum spacing between electrode and the metal wire, just can reach enough little capacitive reactance.In addition, still very big in the influence of this frequency range dielectric change, that is to say to have high dielectric constant materials and be directed at the electric capacity rising, thereby cause the capacitive reactance between the antenna to reduce.So the counterfeit money of a humidity may be identified as genuine note.In fact, the particularly mechanical validity check of these equipment does not prove practicality so far.
EP 589 195 A2 have described a kind of method, in this method in order to check the authenticity of object to be tested, evidence signal through the zone to be scanned acquisition of the scanning with high-penetrability magnetic element, obtain allocated code by means of device, and when the evidence signal is consistent with allocated code, affirm authenticity with field coil and sensing coil.This method of inspection only is applicable to the plastic sheet that is equipped with magnetic particle or magnetizable particles, has only a small amount of Europe bank note in addition to come into operation.The another kind of method of inspection, as at EP 204 574 A2, describe among 553 402 A1 and 560 023 A1, in this method, the geometry of checked object and/or the character of physics are classified with relative method, only be applicable to class object to be checked at every turn, very expensive, in fact with regard to cash inspecting machine because unique validity check method must more speed and can not realize in the operational process in processing.
Task of the present invention is to propose a kind of method for the shortcoming of eliminating the existence of known inspection machine and method, adopt this method reliably the recognition feature certification label be possible, the bank note and the currency that are used for numerous species also can be for example under checked object situations humidity or deliberately humidification and/or that pollute, can distinguish each other them, need lower technical expense, it uses the utility appliance that is fit in the cash inspecting machine, and the adaptation checked object passes through in cash inspecting machine fast.The false proof line or belt of conduction in bank note and securities, perhaps the anti-false sign of plane formation is as the inspection by attributes sign.In addition, this task is to constitute the inspection machine of implementing this method like this, with activation it is serially connected in the front, so that carried out validity check before according to currency and kind classification.
In addition, for implementing the inventive method, proposing of task also is to develop a kind of device of checking security documents, ribbon grain or wire striped that these security documents contain a conduction are used to check not only common conductive stripe as the safety composition, and have many conductions but this class striped in zone insulated from each other.
Example for this security document is exactly current U.S.'s bank note, it has a conduction on its anti-counterfeiting line but characteristic indication insulated from each other.In the practice of today, this checking system must no problem ground be packed in the cash inspecting machine, this cash inspecting machine is not only discerned than this more high-quality counterfeit money but also can be discerned more inferior authentic document, because in fact this situation takes place quite continually, and disturb the operational process of cash inspecting machine to cause false triggering greatly.
Stipulate utilizing under the known capacity coupled condition according to the security document method of inspection of the present invention: the electric signal of emitting antenna is sent to receiving antenna through the anti-false sign of conduction, and be exaggerated, subsequently according to amplitude variations with change in time and carry out analyzing and processing and to change comparing with the signal that has existed, its mode is as follows, it is changed into the signal with easy relatively parameter change.For the treatment step of implementing this method and also will further describing, bank note, file, securities for anti-counterfeiting characteristic with false proof striped or anti-counterfeiting line or plane formation ... the like that utilization under the capacity coupled condition, propose a kind of verifying attachment, it is for example mainly finding application in the cash inspecting machine in counter.Sensor technology in the field of light and/or magnetic and/or format sensor is arranged on the casing assembly.This machine guiding bank note and/or the securities verifying attachment of passing by.Test sensors comprises antenna and/or electrode.Antenna and/or electrode have such extending longitudinally according to area in the transmission direction perpendicular to checked object, so that under the situation of certain side direction activity space of checked object, and with from the front or up whether checked object irrelevant by inspection machine at the back side, in any case false proof striped or tamper-proof strip can also inswept fully antenna and/or electrodes.The antenna of verification unit and/or electrode are fit to usually carriage, contact roller and/or the travelling belt that everybody is familiar with, so that file to be tested draws back definite distance and/or is pressed onto on the electrode in that the antenna bypass is out-of-date fast at it.By of the present invention in light and/or magnetic and/or format sensor field the mutually combining of verification unit, generally the identification of being used as physical dimension, position, color and the like of these sensors is worked, and impels the triggering of detecting sensor simultaneously.
High-frequency energy and/or low frequency energy and/or DC voltage are presented to one or several antenna and/or electrode, and one or more antennas and/or electrode receive a part of reflected energy through false proof striped or anti-counterfeiting line again.It has changed the voltage that is added on one or more receiving antennas and/or the receiving electrode.
In order to access for example workability of authenticity, file, the comparable check conclusion of the protection of bank note, constant transmission condition for example speed is necessary for checked object to be compared.Antenna and/or electrode offer data analysis and handle voltage of electronic circuit.Data analysis is handled electronic circuit voltage relevant with the signal shape that receives voltage, that be easy to comparison is provided.In order to suppress interfering energy and external energy and to stop the influence of the background conductivity of checked object to measurement result, available rectangular window and/or phase comparator.
The output pulse that electronic circuit is handled in data analysis is irrelevant with transfer rate.Special selectivity becomes possibility in order to make inspection machine, and selective amplifier is additionally handled the electronic circuit coupling with data analysis.Selective amplifier makes the voltage of voltage transition for comparing easily from the test sensors input, and this voltage is relevant with test sensors input voltage amplitude-response curve.Definite amplitude that adds is limit in relevant (tamper-proof strip of conduction or anti-counterfeiting line or the sign that the conducts electricity arbitrarily) definition of the taxonomic category of data analysis processing electronic circuit, the amplitude fluctuation of the so approaching check signal of its curvilinear motion, the difference between consequently the peak swing of being determined by definition that amplitude is limit and all objects to be tested are possible rises and falls is carried out the definite of authenticity.In other words, even puppet product of Chu Xianing recently, it provides a signal, generally can be regarded as the analyzing and processing signal, handles electronic circuit with data analysis of the present invention and also can be defined as pseudo-product.
--for example being all bank note with indivedual countries of similar false proof striped--by the described data analysis processing of invention electronic circuit, the judgement of currency special use reaches in the following manner according to invention is described, for a kind of currency, for example can determine the time limit of check signal amplitude by controller, this time limit is to have any different with the duration of the amplitude-response curve of all other currency.
When the amplitude of the check signal of currency has the identical duration, can carry out additional test, for example by color identification and/or color distortion and/or magnetic test method and/or format check method.The for example signal combination of identification signal that provides by the light baffle and test sensors of the present invention combination, and the output pulse that produces a machine-specific entirely.
Another program of this method is, for checking security documents is controlled one or more pairs of emitting antennas with phase shift.Owing between the conduction sign on one of emitting antenna and the false proof striped and in the latter and the capacitive coupling that between the receiving antenna on emitting antenna opposite, exists respectively, on amplifier input terminal, produce the signal of definite authenticity.Because there is not the false proof striped of conduction in reach, in check second emitting antenna that moves on to first emitting antenna does not mutually carry out the capacitive coupling of signal to receiving antenna.So the check of the conductive stripe that connects by this sharp device was exactly possible originally.If another is arranged to transmitting and receiving a pair of antenna dislocation of antenna and this, its size and must mate then to the spacing of the conduction mark of false proof striped.Be transported in test sensors by object to be tested, signature amplitude signal and time signal, but thereby the signal of analyzing and processing be transferred to data analysis from receiving antenna and handle on the electronic circuit.So implemented check, this check have the ability identification and analyzing and processing a plurality of conduction signs insulated from each other correspondingly.Whether therefore, plan to insulate between the conduction sign, for example produce insulation as U.S.'s bank note or by the folding line in the conductive stripe continuous in manufacture process, for example as German bank note, these all are unessential.Microcontroller can compare disconnection times and storing value.Many by arranging to emitting antenna and receiving antenna and attached data analysis processing electronic circuit, the reliable conclusion that draws genuineness of document is possible, although be displaced sideways because have when object to be tested is transported to inspection machine, this equipment still can be worked reliably.If according to arrangement emitting antenna of the present invention and the receiving antenna whole work range through cash inspecting machine, then security document and validity check location independent are possible.Therefore, file whether in the front or the back side and/or the left side or the right side arrange false proof striped and/or move all unimportant perpendicular to transporting direction.Therefore, file can be checked, and file not only is arranged in form type but also at false proof striped and transports on the direction and can distinguish.In addition, by dissimilar false proof stripeds not only authenticity classification be possible, and various file for example the special ownership of various currency also be possible.
To according to test sensors combination of the present invention, can make up by preposition and/or rearmounted another group test sensors transporting on the direction of bank note.In this case, the output signal of this sensor combinations with according to the output signal of sensor combinations of the present invention (dual test) combined together, software for relevant cash inspecting machine needn't change, and for example needn't replenish the inspection machine of equipment the method for the invention.
Useful feature of the present invention also is derived from this explanation and accompanying drawing except being derived from claim, wherein each feature shows the embodiment that should ask for protection with the form of independent form or the combination of a plurality of branch respectively, to these protections of here filing a request.Embodiments of the invention are described in the drawings.
Fig. 1 represents the block scheme of analyzing and processing circuit
Fig. 2 be illustrated in multiple by bank note under the speed by the time detective curve.
Fig. 3 represents the detective curve of currency special use.
Fig. 4 represents the detective curve of multiple bank note and counterfeit money.
When representing dual test, Fig. 5 analyzes the block scheme of treatment circuit.
Fig. 6 represents the sectional view of inspection machine signal.
Fig. 7 represents the test sensors combination.
Fig. 8 represents the block scheme of inspection machine.
Fig. 9 is illustrated in the configuration of test sensors in the cash inspecting machine.
What the method that relies on various device and device to describe in detail below related generally to is the enforcement of processing step: the capacitive coupling of electric signal, conduct electricity anti-fake material to receiving antenna from the emitting antenna process, amplify and be what receive the signal that is easy to comparison in different signal transition aspect amplitude-response curve and the time response curve, and they and the signal change curve that has existed are compared, so that indicate and evaluate the authenticity of file to be tested with suitable form.The machine that matches with inspection machine is transported to bank note and securities in the zone of inspection machine.So the light baffle triggers test sensors.
Emitting antenna is with the high-frequency energy feed.Use 6MHz in the present embodiment.If false proof striped or anti-counterfeiting line run through the proving ground, then receiving antenna receives a part of reflected energy again.It has changed the HF voltage that is on the receiving antenna.Its reason is the capacitive coupling between emitting antenna and receiving antenna that the conductivity based on false proof striped or tamper-proof strip that everybody is familiar with causes.The high-frequency electrical conductance of various currency is different.In order to obtain the conclusion of currency special use by the data analysis treatment circuit, to have constant service condition be necessary to all objects to be tested in operation.
The data analysis that is in the functional unit is handled electronic circuit mainly by analog-to-digital converter, controller or integrator 15, trigger 16, controller monostalbe trigger 17 and/or AND logic circuit 18 are formed, and are connected with verification unit and test sensors thereof through shielding line.A kind of possible data analysis is handled electronic circuit and is illustrated in the block scheme of Fig. 1.
Test sensors and data analysis treatment circuit are to certain shielding of electric field and electromagnetic field, and test sensors is in the arrangement in light baffle zone, guaranteed the high ratio of useful signal to undesired signal, and by means of with certain bank note forced guiding by the associated travelling belt of speed, make the selectivity of currency special use of inspection machine become possibility.This another advantage according to the method for the invention is: the water cut of checked object and/or bank note and/or currency and dustiness occur as interference source no longer highlightedly.
Fig. 6 has provided the synoptic diagram of verifying attachment section, and this verifying attachment has at first had use according to said method in counter in cash inspecting machine.Machine rack 2 is arranged on case component 1, and the leg 3 that this support stretches in its horizontal direction holds the test sensors combination, and this test sensors is combined in the zone of light baffle 4,5 and is placed on the non-conductive support material 6 of leg 3.Timbering material 6 is equipped with and is used for slit and/or the nib 7 that light baffle 4,5 light leaks are used.As long as use as the transparent timbering material 6 of glass, this slit and/or nib 7 just can be cancelled.
The test sensors combination is made up of several strip sensors 8,9, is made up of two sensors in this example, and promptly a strip sensor 8 is as emitting antenna, and a strip sensor 9 is as receiving antenna.Strip sensor 8,9 have such extending longitudinally according to area transporting direction perpendicular to bank note 11, so that under the situation of certain side direction activity space of bank note 11, and with bank note 11 be that front or the back side are up irrelevant by inspection machine, under each situation, false proof striped or anti-counterfeiting line can sufficiently inswept strip sensors 8,9.And false proof striped or anti-counterfeiting line are transmitted by inspection machine under strip sensor 8,9.Under leg 3 and therewith 10 pairs of strip sensors 8,9 of parallel strip line have a kind of like this spacing operation so that bank note its fast by the time be forced on strip sensor 8 and 9.
Between travelling belt 11, arranged light baffle 4,5 perpendicular to the bank note direction of passage.
Data analysis is handled electronic circuit and also is positioned in the shadow zone of cash inspecting machine, and it is placed in the casing zone with suitable method in the present embodiment, has for example placed the thickness of paper and adjust equipment in this zone.
Test sensors and data analysis processing circuitry are to certain shielding of electric field and electromagnetic field, and test sensors combination is placed in light baffle 4, in 5 the zone, assurance has the ratio of high useful signal to undesired signal, and by means of with certain bank note forced guiding by the associated travelling belt 10 of speed, make the selectivity of currency special use of inspection machine become possibility.This another advantage according to inspection machine of the present invention is: the water cut of checked object and dustiness occur as interference source no longer highlightedly.
Bank note transport direction one not shown in this example settle another group sensor combinations according to sensor combinations of the present invention front and/or back, for example be used for magnetic testing, shown in the block scheme of Fig. 5.
In this case the output signal of this sensor combinations with according to sensor combinations of the present invention link together (dual test), software for relevant cash inspecting machine needn't change, and is for example replenishing under the situation of equipment to invent described inspection machine.
Electronic circuit-as Fig. 2, shown in 3 is handled in the data analysis that is bonded together with test sensors combination and light baffle--a relevant DC voltage of amplitude-response curve with the reception HF voltage is provided.In the figure that mentions, this situation has been described at the transmission signals shown in each curve a.
Fig. 2 represent bank note with various by speed by the time detection curve.Curve a provides transmission signals and curve b provides the output signal of data analysis treatment circuit.V
1Pass through 500 bank note corresponding to per minute, and V
2Pass through 1800 bank note corresponding to per minute.In addition, how the paper money recognition signal that provided by the light baffle of curve b explanation combines with the signal of test sensors combination and is generated as the output pulse of machine-specific.This output pulse is with irrelevant by speed, as with Fig. 2 curve b relatively seen.
Described the detection curve of currency special use when the bank note of various currency passes through at Fig. 3.Curve a represents the transmission signals of test sensors again, and curve b represents additionally to handle with data analysis the analyzing and processing signal of the selective amplifier of electronic circuit coupling, for the selectivity adult of the currency special use that makes inspection machine is the sensor that possible need not to add.Represent German currency at Fig. 3 DE, CH represents Switzerland's currency, and EG represents Egyptian currency, and CN represents from the China of nineteen ninety distribution " circle ".
Under the bank note situation of various currency, the amplitude-response curve that is formed different reception high-frequency energies by different types of false proof striped can clear identification, and handle electronic circuit by data analysis and can detect.If it is essential setting about handling the currency special signal, then handling the additional preparative of electronic circuit for the classification of currency special use by data analysis is possible by controller for example.--the false proof striped or the anti-counterfeiting line of imitation arranged or have only a wherein part--and can discern so as being to distinguish the different currency by different false proof stripeds or anti-counterfeiting line, as long as comprise counterfeit money.Fig. 4 has provided the detection curve of 11 kinds of bank note in the paper money counter.Bank note with numbering 21 to 25 and 27 to 31 is identified as true bank note.The checked object of numbering 26 is the counterfeit moneys of having a mind to put into for the check purpose.Owing to do not have false proof striped or do not provide signal because the false proof striped test sensors of copying makes up.Actually, when blackout or when non-bank note special signal, cash inspecting machine quits work, and take out counterfeit money or bill that can not suitable use or it is separately left aside with mechanical.
If verification unit additionally is connected together with another test sensors, then the output pulse of this machine-specific be designated as at that time false proof striped or the identification of anti-counterfeiting line, and carry out with the output signal of the additional test each time of cash inspecting machine " with " logical process.If one of two authenticity signals have mistake, then machine stops, and the operator takes off defective or pseudo-bank note.
When specified data analyzing and processing electronic circuit correspondingly, the Another Application possibility is provided by the analyzing and processing signal of selective amplifier, and these signals are represented on Fig. 3.If for the purpose of various currency types, in the relatively large cash inspecting machine that comes into operation, all surmount the tagged amplitude limit of Fig. 3 A for all currency to be tested, then use speed V
2Currency be identified as very false proof striped or the true anti-counterfeiting line that test sensors combination is responded.Each supply in money one special-purpose time t
kMust definition time t in order to distinguish individual currency
k=t
1T
4To t
nBe t
fThe currency special use.
So, for example select the t of German currency
fT greater than Swiss franc
2Or the t of selection Swiss franc
fT greater than Egyptian currency
3Because the t of German currency
fT with unshowned currency in Fig. 3
fMay select equally greatly, be necessary so use the check of another currency special use of color method of identification that everybody is familiar with and/or format check method and/or magnetic test method in cash inspecting machine.The mode lattice that the single line currency of choosing so is familiar with everybody is placed or is put into fan-shaped or the stacking container.
Especially for the non-common false proof striped of conduction of checking file, the test sensors that cash inspecting machine is joined fully makes up 54, and shown in Fig. 7, it is made up of a plurality of emitting antennas and the receiving antenna of parallel and vertical transport direction.In order to check bank note, this for example is to realize like this passing through safely on conveying equipment in paper money counter in cash inspecting machine, carry out so that false proof striped in the bank note or anti-counterfeiting line approximately are in and transport direction in its longest length, and for example German currency approximately is on the vertical transport direction with its longest length.Emitting antenna A2, A3 and receiving antenna A1 are oppositely arranged.A plurality of for this reason emitting antenna B2.i (i=1 ... n) and a plurality of receiving antenna B1.i stagger, it is right to form antenna respectively.These antenna is to configuration interlaced with each other, so that suppress emitting antenna B1, the signal of i is to adjacent but be not corresponding receiving antenna B1, k (k=1 ... n, i＜k) coupling of crossing the border.(spacing between (B1.i) is opened in the reception sky of mainly be separated by emitting antenna (B2.i) and subordinate to adjacent emitting antenna for B2.i, B2.i+1) the alternate arrangement certain spacing of being separated by.In order to reduce the influence of interference, the staggered antenna in diagonal angle is right each other, mainly is placed in emitting antenna A2, between A3 and the receiving antenna A1.
Fig. 8 has provided the block diagram according to inspection machine of the present invention with the combination of control chart 7 test sensors.If file is flowed to the cash inspecting machine that comprises inspection machine of the present invention, then this inspection machine is by the sensor-triggered of light baffle or similar location.Frequency generator 41 control emitting antenna A2, and through a phase shifter 42 control emitting antenna A3.Control the disturbing effect that prevents external energy by phase shift, and can be identified in the counterfeit money that the conductivity aspect does not show difference.This also is at those bank note, its characteristic itself for example since aging and/or mechanical damage and/or humidity change.Several emitting antenna B2.i (i=1 of while ... n) through a second frequency generator 43 and one second phase shifter 44 controls.Respectively perpendicular to transporting direction, but the emitting antenna B2.i that is not arranged in rows is controlled by phase shift, so that reduce the disturbing effect of external energy, and stop the receiving antenna B1.k (k=1 of emitting antenna B2.i to a non-correspondence ... n, i＜k) the electric capacity coupling of crossing the border.The frequency that two generator signals have is chosen such that at this moment this frequency is not several times of another frequency or is not several times of two difference on the frequencies, mingles with the signal of eliminating on the receiving antenna.
In when check, the signal of emitting antenna A2 takes place the coupling of crossing the border of the capacitive character of receiving antenna A1 through a false proof striped of the conduction of passing through, and the signal of emitting antenna A3 does not have capacitive couplings to receiving antenna A1.Bee-line between emitting antenna A2 and the receiving antenna A1 is less than the longest stretching, extension of the false proof striped of conduction of minimum file to be tested.If false proof striped never is in the reach of emitting antenna A2 and receiving antenna A1 when check, then false proof striped is in the reach of emitting antenna A3 and receiving antenna A1, can be implemented so be similar to other function of above-mentioned situation.A signal is attached on the receiving antenna A1 subsequently, this signal provides a signal to microcontroller 47 by means of rectifier 45 and selective amplifier 46, the for example specific threshold value of the signal that signal by selective amplifier 46 and microcontroller 47 store compares, and microcontroller is realized the authenticity classification.If surpass threshold value, microcontroller is included into the object of the conduction tamper-proof strip of perforation to object to be tested, promptly under German bank note situation, is included into genuine note one class.If in false proof striped, there is the conduction mark, this mark can not be launched antenna A2 and receiving antenna A1 detects because it stretches, then to discern these marks be possible to the receiving antenna device B1.i of device by emitting antenna B2.i of the present invention and subordinate, because the spacing between the gap ratio emitting antenna A2 of these two kinds of antennas and the receiving antenna A1 is little several times.If with file transport the parallel existence of direction the conduction mark be stretched to 1.5mm, then should select the spacing of emitting antenna B2.i and receiving antenna B1.i for example to be 1.3mm, so that guarantee to cross the border more reliably coupling.In when check, security document to be tested was with the test sensors compound action scope of certain speed at inspection machine of the present invention, move.Emitting antenna B2.i device and receiving antenna B1.i device by moving when the bank note that file is transported the direction quadrature moves, provide tolerance compensating.The signal of setting up on receiving antenna B1.i is through rectifier 48 ... 50 and selective amplifier 51 ... 53 send microcontroller 47 to.Each is according to the characteristic and the position of false proof striped in the file, selective amplifier 46,51 ... the signal of 53 input microcontroller 49 is different on frequency characteristic and amplitude-response curve.Thus, by with frequency regulation and that the value that stores in microcontroller is carried out and/or threshold ratio, it is possible classifying by 47 pairs of files of microcontroller.The value that stores in this microcontroller comes relatively to determine that by manual input, programming and/or with some values these values are the parameter value that the reference paper that usefulness has been classified is definite.Microcontroller 47 produces machine-specific signal, the authenticity of the bank note that this signal indicating is to be tested.This category signal of microcontroller 47 is coupled to relevant therewith indicator elment, and/or is coupled on the cash inspecting machine corresponding interface in order further to handle.So as different bank note by different false proof stripeds or anti-counterfeiting line be diacritic, as long as this counterfeit money has the false proof striped or the anti-counterfeiting line of imitation or has only wherein a part, such counterfeit money is still and can discerns.Frame mode by the one-hundred-percent inspection facility compact, especially handle electronic circuit and additional shielding measure by sensor and the data analysis of forming a unit, provide other possibility for reducing disturbing effect, this has very big meaning actually all the time.Arrangement in the cash inspecting machine is such, makes common coin transport the influence that is not subjected to sensor combinations.
How inspection machine of the present invention is integrated in for example traditional cash inspecting machine as shown in Figure 9.For this reason, by emitting antenna A2, A3, B2.i and receiving antenna A1, the sensor combinations 54 that B1.i constitutes is integrated on the existing guide piece 56.Wherein these sensor combinations 54 are tangent with guide piece 56, and the perhaps tangent and dislocation with delivery roller makes it additionally bear its guide function in the zone of sensor combinations.Therefore bank note to be tested arrives the clamping means that need not to add in the sensor reach.Arrange sensor combinations 54 tangent like this with existing guide piece 56, make to be tested, carry and mistake with certain spacing and certain speed in that test sensors combination 54 is other by the security document of delivery roller 55 transmissions.By the definite spacing between delivery roller 55 and guide piece 56 or test sensors combination 54 of corresponding fasteners, especially oscillating screw on the guide piece 56 is adjustable.The parametrization of threshold value and sort capacity is to realize by not shown switch or through microcontroller 47 corresponding softwares.Therefore the user can change sort capacity so that check other currency by simple switch.Cash inspecting machine quits work when blackout or when non-bank note special signal actually, counterfeit money or have out of use bill to be removed.
To whole document width, the quality of paper, degree of aging, humidity etc. greatly reduce the influence of authenticity classification by the antenna assembly lateral expansion.This also comprises for example classification of counterfeit money, true bank note and frequent used old bank note.This classification is by selective amplifier 46,51 ... the determining of the threshold value parameter of the microcontroller 47 that 53 corresponding analysis that provide the amplitude characteristic of signal and time response are handled and handled by data analysis carries out.The calibration of microcontroller 47 is to realize by manual software control or by the correction file of special use, and carrying out the authenticity classification by this private file is that everybody knows.In one method of back, the calibration file of inspection machine of the present invention is tested as mentioned above.Replace selective amplifier 46,51 ... existing signal in signal on 53 output terminals and the microcontroller 47 compares, and these signals are as being stored in the microcontroller 47 with reference to amount.
Another installation site to test sensors combination 54 is provided by patented claim 195 18 229.4.According to the present invention, test sensors combination 54 for example is placed on the end of circular arc guide piece, as current shown in Figure 10.For checked object with certain interval and/or snugly on inspection machine, cancelled necessary hold down gag here from other the mistake.If the above-mentioned tangent line misconstruction of verifier combination 54 in the zone of circular arc guide piece 56 can not be realized, then can utilize this possibility.Because securing member of the present invention is spring for example, contact roller is cancelled, so checked object itself mechanically also bears the less load of inspection machine.
Specific embodiments by test sensors combination in the paper money counter and data analysis processing electronic circuit is described the inventive method.But should see the indivedual situations that the invention is not restricted in embodiment, describe, because in the framework of Patent right requirement, required change and conversion.So for example the various embodiments of data analysis processing electronic circuit are possible, these circuits have the specific working method of selective amplifier.
Claims (21)
1. utilizing capacitive coupling and the rearmounted data analysis that connects between the transmitter and receiver to handle under the situation of electronic circuit, false proof striped with conduction, band, the method of inspection of the security document of the anti-fake material that line or plane form, it is characterized in that: corresponding with the test sensors interblock space in the cash inspecting machine, and in the optical sensor of triggering test sensors combination and/or the scope of Magnetic Sensor and/or format sensor, the a plurality of antennas and/or the electrode that work as emission sensor or receiving sensor that are positioned at one or more planes are formed one or more checks district, and the process of the energy in high frequency and/or low frequency and/or DC voltage scope checked object is according to its physical dimension, and/or its conductivity, cross antenna and/or electrode and realize coupled transfer; The transmission of power that has same-phase or out of phase through one or many antennas and/or electrode handle offers the rearmounted selective amplifier (14) that connects, for fear of interfering energy and in order to suppress for example background conductivity in the bank note of checked object, phase comparator that is connected selective amplifier (14) back and in order to suppress to disturb rectangular window and the data analysis processing unit with external energy, they are to arrange like this, force to be controlled at checked object in the undetermined lateral register in by the checkout procedure in check district to conducting electricity false proof striped, tamper-proof strip, the checked object that anti-counterfeiting line or plane form is classified.
2. method according to claim 1, it is characterized in that: data analysis is handled electronic circuit mainly by analog/digital converter and controller or integrator (15), trigger (16), controller, monostalbe trigger (17) and/or AND logic circuit (18) constitute, and surmount amplitude limit (A) and/or the special-purpose time t of currency by the characteristics of signals curve decision of the output terminal of selective amplifier (14)
k
3. according to claim 1 or 2 described methods, it is characterized in that: handle electronic circuit by data analysis, the mode with the amplitude limit (A) of determining currency authenticity to be tested realizes the authenticity classification.
4. according to claim 1 or 2 described methods, it is characterized in that: handle electronic circuit by data analysis, at first to determine the special-purpose time (t of currency with controller
k), and with time t
1T
K-1, t
K+1T
nTo the mode that checked object is selected, realize various bank note and/or securities are classified.
5. according to one of aforesaid right requirement or several described method, it is characterized in that: have identical time t
kCurrency in, carry out additional test according to validity check.
6. one of require or several described method according to aforesaid right, it is characterized in that: exclusive data analysis and processing unit mainly be one or more controllers by time ratio and/or voltage ratio provide the machine-specific signal in order to stack each sort file with the form of the grid of special use or stacking container.
7. according to one of aforesaid right requirement or several described method, it is characterized in that: perpendicular to the antenna that transports direction and/or the electrode of checked object, has so relevant extending longitudinally with area, to such an extent as under certain sideshake situation of check thing, and to be that inspection machine is up passed at the front or the back side irrelevant with checked object, under each situation, false proof striped or tamper-proof strip are with inswept contiguously antenna of a determining deviation and/or electrode.
8. according to one of aforesaid right requirement or several described method, it is characterized in that: carry out additional test, its result handles the signal contact of electronic circuit by means of "AND" circuit with data analysis, and needn't change the software of relevant cash inspecting machine.
9. for being used for check, one of claim 1 to 8 or several described methods have the false proof striped of conduction, band, the equipment of the security document of the safe material that line or plane constitute, it is characterized in that: trigger in the scope of the optical sensor of the test sensors combination in the cash inspecting machine and/or Magnetic Sensor and/or format sensor, arranging a plurality of sensors that are positioned at the one or more checks of the composition district of working as emitting antenna or receiving antenna on one or more planes, and through checked object, according to its physical dimension and/or conductivity, energy in the high-frequency range, antenna is so arranged on cross the border coupling ground, so that the selective amplifier (14) that connects in the middle of giving of transmission of power with same phase or out of phase of one or more days bundle of lines; And for fear of interfering energy and for suppress checked object for example one of background conductivity arrangement in the bank note 11 be connected the phase comparator of selective amplifier (14) back, and in order to suppress interfering energy and external energy arrangement rectangular window, basically by analog/digital converter, with controller or integrator (15), trigger (16), controller, the data analysis processing unit that single-shot trigger circuit (17) and/or AND logic circuit (18) are formed/and arrange checked object on sensor with of the contactless applying of undetermined lateral register to determine, and with the regulation speed by the brush of in this scope, arranging and/or pressing plate and/or travelling belt (10) roller, clamping plate and analog in checkout procedure from the side mistake.
10. according to the described equipment of claim 9, it is characterized in that: the sensor that works as emitting antenna or receiving antenna, opposed and/or form strip sensor (8 symmetrically in a plane or in two planes; 9).
11. according to claim 9 or 10 described equipment, tool is characterised in that: strip sensor (8; 9) have space and/or fracture and/or window (7) or arrange these directly next-door neighbour's strip sensors (8; 9).
12. require 9 to 11 one or more of described equipment according to aforesaid right, it is characterized in that: the sensor in verification unit mainly is the false proof streak line of bank note, securities and packing with check district and/or object to be tested and/or is with symmetry arrangement.
13. have the false proof striped of conduction in order to use one of claim 1 to 8 or several described methods to be used for check, band, the equipment of the security document of the safe material that line or plane constitute, it is characterized in that: a plurality of emitting antenna (A2, A3, B2.1 ... B2.n) and a plurality of receiving antenna (A1, B1.1 ... B1.n) form a test sensors combination (54), this is so to arrange, so that the conductive stripe of Guan Tonging but also have a plurality of conductions but the striped in zone insulated from each other also can be checked in false proof striped not only, wherein the test sensors combination is arranged to that to form guide piece (56) tangent with circular arc, parallel, it is staggered or with to transport roller (55) tangent, parallel, staggered; Perpendicular to the longest direction of extension of false proof striped and perpendicular to the emitting antenna (A2 that is subjected to low frequency or high frequency control of two opposite phases of the direction of motion of file to be tested, A3), with be parallel to emitting antenna (A2, A3) one or more receiving antennas (A1) are opposed mutually, and be arranged in and be parallel to emitting antenna (A2, A3) a plurality of emitting antenna (B2.1 between these ... B2.n), with be parallel to emitting antenna (B2.1 ... B2.n) a plurality of receiving antenna (B1.1 ... B1.n) between, wherein adjacent emitting antenna (B2.i, B2.i+1) and the receiving antenna (B1.i of subordinate, B1.i+1) alternate arrangement interval one determining deviation, mainly be spaced apart the spacing between the receiving antenna (B1.i) of emitting antenna (B2.i) and subordinate, and emitting antenna (B2.i) to the shortest spacing of the receiving antenna (B2.i) of subordinate less than emitting antenna (A2, A3) and the shortest spacing between the receiving antenna (A1).
14. equipment according to claim 13 is characterized in that: the entering of whole file at cash inspecting machine arranged a plurality of emitting antennas (A2, A3, B2.1 on the width ... B2.n) and a plurality of receiving antenna (A1, B1.1 ... B1.n).
15. according to claim 13 or 14 described equipment, it is characterized in that: emitting antenna (A2, A3, B2.1 ... B2.n) and receiving antenna (A1, B1.1 ... B1.n) so side by side, parallel, alternate arrangement in a plane so that with regard to two parallel document edges, can carry out with side irrelevant and with the edge irrelevant and with the genuineness of document check of location independent.
16. according to one of claim 13 to 15 or several described equipment, it is characterized in that: the parallel receiving antenna (B1.1 that interlocks and/or be in the vertical transport direction in order ... B1.n) and emitting antenna (B2.1 ... B2.n) be to arrange at certain intervals like this, so that each anti-false sign to be tested and its arrangement hereof are irrelevant, an inswept at least receiving antenna (B1.1 ... B1.n) and the emitting antenna (B2.1 of a subordinate ... B2.n).
17. according to one of aforesaid right requirement 13 to 16 or several described equipment, it is characterized in that: the longest edge of the receiving antenna (B1.i) of the longest edge of emitting antenna (B2.i) and subordinate is corresponding to the width of false proof striped conduction sign.
18. according to one of claim 13 to 17 or several described equipment, it is characterized in that: the on-off element of exercisable or software control and adjust element, especially at rectifier (45,48 ... 50) and selective amplifier (46,51 ... 53) microcontroller after (47) is to arrange like this, so that selective amplifier (46,51 ... 53) output signal can be combined or logic connects.
19. according to one of aforesaid right requirement 13 to 18 or several described equipment, it is characterized in that: sky exercisable or software control closes element, especially at rectifier (45,48 ... 50) and selective amplifier (46,51 ... 53) microcontroller afterwards (47) is to arrange like this, so that conversion need not to change sensor arrangement between various file types, kind and rate of wear.
20. according to one of aforesaid right requirement 13 to 19 or several described equipment, it is characterized in that: the shortest spacing between two sequentially-placed emitting antennas (B2.i) is greater than the shortest spacing between the alternate each other insulation sign of two conductions of false proof striped; Conversion element is to arrange like this, or is according to the file decision to be tested that transmits as emitting antenna or as the antenna (A3) of receiving antenna.
21. according to one of aforesaid right requirement 13 to 20 or several described equipment, it is characterized in that: on-off element software control and/or manually control is to arrange like this, and one or several emitting antenna (B2.i) and corresponding receiving antenna (B1.i) can trigger or go to trigger selectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96192929A CN1179843A (en) | 1995-03-30 | 1996-03-29 | Method and devices for checking security documents |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19512921.0 | 1995-03-30 | ||
| DE19512926.1 | 1995-03-30 | ||
| DE19609405.4 | 1996-02-29 | ||
| CN96192929A CN1179843A (en) | 1995-03-30 | 1996-03-29 | Method and devices for checking security documents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1179843A true CN1179843A (en) | 1998-04-22 |
Family
ID=5128545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96192929A Pending CN1179843A (en) | 1995-03-30 | 1996-03-29 | Method and devices for checking security documents |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1179843A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931359A (en) * | 2015-02-25 | 2016-09-07 | 起山电子株式会社 | Apparatus and method for discriminating bills using RF signals |
-
1996
- 1996-03-29 CN CN96192929A patent/CN1179843A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105931359A (en) * | 2015-02-25 | 2016-09-07 | 起山电子株式会社 | Apparatus and method for discriminating bills using RF signals |
| CN105931359B (en) * | 2015-02-25 | 2019-03-19 | 起山电子株式会社 | Utilize the paper money identifier and its method of radio frequency |
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