CN105247417A - Device and method for exciting electroluminescent pigments without contact - Google Patents
Device and method for exciting electroluminescent pigments without contact Download PDFInfo
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- CN105247417A CN105247417A CN201480017332.9A CN201480017332A CN105247417A CN 105247417 A CN105247417 A CN 105247417A CN 201480017332 A CN201480017332 A CN 201480017332A CN 105247417 A CN105247417 A CN 105247417A
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- 230000004907 flux Effects 0.000 claims abstract description 49
- 230000005855 radiation Effects 0.000 claims description 45
- 238000005401 electroluminescence Methods 0.000 claims description 44
- 230000005684 electric field Effects 0.000 claims description 16
- 230000005284 excitation Effects 0.000 description 28
- 230000003287 optical effect Effects 0.000 description 18
- 238000007689 inspection Methods 0.000 description 15
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- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- 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
- G07D7/02—Testing electrical properties of the materials thereof
-
- 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
- G07D7/06—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 using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/1205—Testing spectral properties
-
- B42D2033/20—
-
- B42D2035/34—
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Credit Cards Or The Like (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention relates to a device for exciting at least one electroluminescent pigment, in particular in a value document or security document (2), without contact, wherein the device (1) comprises at least one electrode (6), wherein the at least one electrode (6) is designed in such a way that an electric flux density of the field (7) that can be generated by the electrode (6) in a predetermined emission direction (9) changes. The invention further relates to a method for contactless excitement.
Description
Technical field
The present invention relates to and encourage equipment and the method for at least one electroluminescence pigment especially had in valency or secure file for non-contact type.
Background technology
There are valency or secure file---such as banknote, I.D., credit card etc. can have so-called security feature or authentication feature, and described security feature or authentication feature are applied on file or in file.Such as can from external drive and encourage time or excitation post analysis described in security feature.Typical authentication feature is fluorescent pigment, and described fluorescent pigment glimmers when encouraging by particular sensor and can be verified thus.
It is also known that electroluminescence pigment to be arranged in valency or secure file or on.
EP1631461B1 discloses a kind of value document, it has at least one safety element, at least one safety element described comprises at marked region and is applied on carrier, comprise the mark layer of electroluminescence pigment, wherein arrange with distributing in described marked region and multiplely move element with the field of its surrounding environment electrical isolation respectively, described field is moved element and is had the specific inductive capacity being greater than 50, described field is moved element and is had the average headway of about 5 μm to 500 μm each other to form the gap for electroluminescence pigment, and the electric field intensity that element increases macroscopic view effect partly in described gap is moved in described field.
DE102008047636A1 discloses a kind of equipment of the authenticity examination for secure file, described secure file have at least one under excitation frequency in high-voltage alternating electric field electroluminescent security feature, described equipment has sensor unit, and this sensor unit comprises stimulating module, capacitor system and detector cells.By sensor unit, secure file is moved, and collects light-emitting line and make it be directed on detector cells by capacitor system, described detector cells detect and in frequency spectrum analyzing and processing light-emitting line.At this, stimulating module has slot-shaped opening, and this opening crosses over the motion path of the secure file of examine with its opposite boundary.
DE19903988A1 is for confirming the equipment of the authentication feature had on valency and secure file, especially banknote, personal document, plastic clip etc., described equipment comprises automatic measuring machine, passes through detector device in automatic measuring machine described in the banknote feed-in of examine at this.Detector device is suitable for the electroluminescence characters of determination and analysis process authentication feature.
In order to encourage the electroluminescence pigment in valency or secure file, must overcome such as at electrode and there is air-gap between valency or secure file.At this, the disruptive strength of air forms the limiting factor of exciting field.In structure so far, the excitation frequency of 30kHz and the driving voltage amplitude peak of 30kV are produced for the air-gap existed there.
It is desirable that, in that the equipment being used for authenticity examination is such as incorporated into dispersion, little banknote inspection machine or in ATM (automatic teller machine).Need the structure space reducing such equipment for this reason.
Existing equipment for authenticity examination does not fully meet these requirements.
Face following technical matters: the equipment and the method that propose to be used for non-contact type ground excitation at least one electroluminescence pigment, it can realize carrying out reliably with the amplitude peak of the reduction of produced alternating voltage and encouraging targetedly.
Summary of the invention
The solution of described technical matters is drawn by the theme of the feature with claim 1 and 9.Other advantageous configuration of the present invention are drawn by dependent claims.
Basic thought of the present invention is, is so configured to the electrode of the equipment of non-contact type excitation, the field wire of the electric field that concentration of local is produced by electrode.Can realize dielectric (flux) density local spatially thus to increase, this advantageously allows the improvement of electroluminescence pigment and encourages more reliably.
According to a first aspect of the invention, propose a kind of for encouraging the equipment of at least one electroluminescence pigment in valency or secure file especially non-contact type.Electroluminescence pigment can be included in the safety element of valency or secure file.Therefore, described equipment also encourages at least one safety element having valency or secure file with electroluminescence pigment for non-contact type.
Therefore, described equipment can be a part for inspection of document equipment, can verify the security feature or safety element that have valency or secure file by means of described inspection of document equipment.
Arbitrary file is called secure file below: it is physical entity, and it is protected by security feature in case unwarranted manufacture and/or forgery.Security feature at least makes forgery and/or copies the feature becoming difficulty relative to simple copy.The physical entity comprised or form security feature is called safety element.Secure file can comprise multiple security feature and/or safety element.In the meaning of this definition determined, secure file also always represents safety element.Also the example comprising the secure file of the value document that representative is worth such as comprises travelling passport, I.D., driving license, identification card, access card, medical insurance card, banknote, stamp, bank card, credit card, smart card, ticket and label.
Described equipment comprises at least one electrode.At this it is possible that described equipment comprises just what a electrode.Electrode for generation of electric field, also referred to as exciting field below described electric field.When being applied on electrode by alternating voltage, produce described electric field.Be applied to below the alternating voltage on electrode also referred to as driving voltage.Driving voltage can be produced by alternating-current voltage source.Also possible that, driving voltage is the output voltage of transformer, and wherein the input voltage of transformer is produced by alternating-current voltage source.Alternating-current voltage source such as can comprise direct voltage source and inverter, and wherein alternating voltage is the output voltage of inverter.
Therefore, if be applied on electrode by driving voltage, then produce electric field, the field wire of this electric field leaves from electrode.
In addition, at least one electrode so constructs, and makes to be changed by the dielectric (flux) density of described electrode along the producible electric field of predetermined radiation direction.Especially, dielectric (flux) density increases and forms at least one maximal value.
Predetermined radiation direction can represent from electrode towards the direction having valency or secure file orientation.The radiation direction of electrode especially can with the surface vertically orientation having valency or secure file.Radiation direction also can be parallel to the central longitudinal axis of electrode and leave ground orientation from the free end of electrode.
" changed " expression by the dielectric (flux) density of described electrode along the producible electric field of predetermined radiation direction: flux density changes in the cross sectional planes of the vertically orientation of the predetermined radiation direction with described electrode.Especially, compared with in adjacent area, at least one area of space with higher flux density can be there is in this cross sectional planes.
Such as, flux density can change along the direction vertical with radiation direction.At this, flux density can change to non-hopping formula continuously, namely in cross sectional planes.Such as, flux density can change linearly or exponentially, especially increases or reduces.
At least one region of the dielectric (flux) density with increase is produced thus in an advantageous manner by the structure structure of electrode.Therefore, especially can carry out field gathering, be assembled the spatial concentration realizing electric field by described field.The excitation improved the reliable excitation of at least one electroluminescence pigment can be realized thus, because also can be realized by the concentrated of exciting field.
In addition, driving voltage amplitude can be reduced in an advantageous manner.Because that not only higher flux density but also higher amplitude cause the improvement of electroluminescence pigment or stronger excitation, so amplitude can be made to reduce due at least one region with high flux density, the intensity wherein encouraged at least keeps constant.
The reduction of the amplitude of exciting field can avoid again the adverse effect of high-amplitude in an advantageous manner, such as, plasma formation in air-gap, voltage breakdown, has the less desirable radiation behavior of the field of high field intensity, the electromagnetic interference (EMI) of other electronic components and high energy ezpenditure.
In addition, described equipment has multiple electrode, and each in described electrode so constructs, and makes to be changed by the dielectric (flux) density of electrode along the producible field of predetermined radiation direction.Therefore, described equipment comprises the electrode of one of embodiment that multiple basis previously set forth structure.
According to the present invention, all electrodes have common radiation direction.
In this case especially it is possible that with the cross sectional planes of all radiation directions vertically orientation in there are multiple regions with maximum dielectric (flux) density.Thus, when electroluminescence pigment is such as when there being the accurate location in valency or secure file unknown, the excitation of electroluminescence pigment is made to become easy in an advantageous manner.The equipment proposed especially produces the exciting field finally obtained in multiple regions with flux peak density.If the exciting field so produced such as is applied to there is at least one electroluminescence pigment have on valency or secure file, then the probability that at least one electroluminescence pigment is arranged in the region with high or maximum flux density increases.Obviously, multiple, especially a large amount of electroluminescence pigment can also be encouraged by such electrode.Such as, the electroluminescence pigment with the size in nanometer range can be present in safety element to stochastic distribution.So, the electroluminescence pigment in the excitation range of the diameter such as with 1mm such as can be encouraged by the electrode of the overall diameter with such as 100 μm.A large advantage when applying multiple electrode is, excitation range and therefore light-emitting area increase.
In another embodiment, in the predetermined region of the vertically cross sectional planes of orientation of the predetermined radiation direction with described electrode, dielectric (flux) density changes.At this, described predetermined region is by the electric field produced by described electrode---and namely whole share of exciting field or predetermined share run through.Be thus described the size in the region in cross sectional planes.Predetermined share such as can pass through predetermined number percent---95%, 90% or 85% definition.
Therefore, in this region run through by the predetermined share of exciting field or exciting field in cross sectional planes, realize the change of flux density.Therefore, especially there is not constant flux density in this region, such as, when plate condenser.
Also possible that, predetermined region is equal to or less than the region comprised by the edge of the electrode projected in cross sectional planes.If the overall diameter of the electrode proposed, especially largest outer diameter project in cross sectional planes, then this region also can be comprised by the edge forming largest outer diameter.
The flux density of the change in predetermined region especially can have just what a maximal value.
The equipment proposed can realize producing field wire concentration of local spatially by described electrode along radiation direction in an advantageous manner, improves the reliability of the excitation of at least one electroluminescence pigment thus as has been described previously like that.
In another embodiment, at least one subregion in the predetermined region of described cross sectional planes, dielectric (flux) density is than higher in other subregions in described predetermined region.Such as, dielectric (flux) density can higher than 1x10
-7c/m
2.As previously set forth, it is possible that just described in a subregion in the predetermined region of cross sectional planes dielectric (flux) density than higher in all remainder regions.Therefore, just what a has the region of high flux density in generation.This can by as propose the electrode that constructs realize at least one electroluminescence pigment targetedly and encourage reliably.
In another embodiment, at least one electrode is towards radiation side end shrinking.The radiation side end of electrode represents at this with bottom: exciting field, especially its field wire are radiate from electrode by described end, be especially radiated at least one valency or secure file.Radiation side end especially can be the free end of electrode.
" shrinking " such as represents the reduction of diameter at this, wherein such as vertically can measure diameter with central longitudinal axis.As previously set forth, central longitudinal axis can be parallel or identical with predetermined radiation direction at this.
By shrinking, the increase especially obtaining the flux density of the exciting field along radiation direction radiation along with continuous shrinking, because shrinking causes field to assemble.
Therefore, the structure structure of the simple realization of at least one electrode is obtained in an advantageous manner.
In another embodiment, electrode has the section of taper.Alternatively, electrode can have conical region.
At this, the region proposed so constructs, and makes electrode towards radiation side end shrinking.
The shape described by previously of described section can realize desired field in an advantageous manner at this and assemble, and wherein can realize the simple structure structure of electrode simultaneously.
In another embodiment, electrode structure is line.Described line such as can be constructed by conductive material.Therefore, described line such as can be constructed by copper, silver or gold, but preferably by carbon fiber constructions.
Described line can have predetermined maximum gauge.Maximum gauge can be such as 1mm.Preferably until the diameter of 0.1mm.When larger diameter, the free thread end of shrinking, the especially thread end of point are favourable.
By the structure of wire, obtain the easy especially manufacturability of high field gathering and electrode in an advantageous manner.
In another embodiment, the spacing of an electrode and an adjacent electrode is less than or equal to predetermined maximum spacing.Spacing can be measured perpendicular to radiation direction at this.Therefore, especially all electrodes can extend in parallel to each other, wherein the central longitudinal axis orientation in parallel to each other of such as electrode.
Spacing between each electrode also determines the spacing in the region in the exciting field finally obtained with high flux density at this.Therefore, by selecting described spacing realization as desired can have the space distribution in the region of high or maximum flux density.
Predetermined maximum spacing can be such as 5mm.
It is possible that comb ground is arranged.At this, each electrode forms the tooth of pectination.Electrode also can be arranged rectangularly.At this, each electrode forms the row and column of matrix.In rectangular layout, in the row direction and/or on column direction, be constant with the spacing of at least one adjacent electrode and direction.
Also possible that, electrode tufted ground or pencil ground are arranged.At this, the distribution of electrode in the cross sectional planes previously set forth does not have the pattern of restriction and has random pattern.In random pattern, such as, can change with the spacing of adjacent electrode and direction.
For electrode being uniformly distributed in cross sectional planes, also obtain being uniformly distributed of the region with high or maximum flux density in an advantageous manner.This especially when electroluminescence pigment in secure file such as same arrange with mutual spacing identical as far as possible time be favourable.
For electrode tufted or the layout of pencil, obtain in an advantageous manner: the space distribution with the region of high or maximum flux density of exciting field is also random.This is especially when electroluminescence pigment is favourable when there being random arrangement in valency or secure file.The stochastic distribution of pigment is such as such as produced when pigment is added into pad-ink as usual or distributes in the substrate randomly in substrate manufacture.
In addition, electrode can so be arranged, electrode is comprised or surrounds a region, the optical element being wherein furnished with optical sensor in this region and/or guiding for beam.Such as, electrode can comprise a region, is wherein furnished with the passage as optical detecting channel in this region.Optical sensor and/or other optical elements such as can be furnished with in described passage.
Described region can be such as the region surrounded by the connecting line of electrode.Described region can have predetermined size at this.Therefore, electrode can around the cell layout for optical detection.
In another embodiment, multiple electrode electrically connects jointly.Can be applied to by driving voltage on multiple electrode in an advantageous manner thus, the exciting field produced by each electrode thus also can have identical phase place simultaneously.
Meanwhile, desired structure space reduces in an advantageous manner, and electrically connecting of each electrode is simplified.
Generally, the equipment proposed can realize such as verifying that the inspection of document equipment of valency or secure file that has with at least one electroluminescence pigment can construct with structure space little as far as possible.
In addition advantageously draw, especially when multiple electrode electrically connects jointly, the circuit overhead that can be used in proposed equipment minimizes.The electrode shape proposed can realize only needing the little structure space for electrode by favourable mode.Obtained in an advantageous manner by the possibility of previously described reduction driving voltage amplitude: occur other less disturbing effects.Therefore, proposed electromechanics can be improved compatible.Also the energy ezpenditure when producing exciting field can be reduced.
Therefore, also illustrate a kind of inspection of document equipment, it comprises the equipment of previously setting forth.Described inspection of document equipment such as can be configured to the portable handheld device of battery operation or a part for this portable equipment.Inspection of document equipment such as can construct on pin shape ground, and wherein arrangement of electrodes is on the shrinking section of pin.By such pin, can implement the simple authentication of valency or secure file in an advantageous manner, its mode is, user manually makes pin relative to having valency or secure file orientation.
Inspection of document equipment also can have other ingredients at this, the alternating-current voltage source of such as previously having set forth and transformer.
Alternatively, described equipment can be incorporated in the inspection of document equipment that such as position is fixedly arranged, such as to have checked valency or secure file in security feature machine readable.
Especially, in the second replacement scheme, inspection of document equipment such as can comprise the optical detection apparatus for detecting the beam launched by least one electroluminescence pigment.Described pick-up unit can be image detection device---such as ccd video camera, optical sensor---such as photodiode, or the miscellaneous part of frequency spectrum detection for launched light.Inspection machine also can comprise other optical elements, such as lens or mirror, its turning to and/or assembling for launched beam.
There are valency or secure file such as can so be placed in inspection of document equipment, make the radiation direction previously set forth and the surface vertically orientation having valency or secure file.
At least one electrode also so relative to having valency or secure file to arrange, can make electrode and having the spacing between the surface of valency or secure file to be maximum 20mm, preferred maximum 5mm.Minimum spacing can be 0mm, thus electrode and file are touched.But preferably, described spacing is minimum 0.5mm, especially when non-guard electrode in case mechanical wear time.
According to a first aspect of the invention, propose in addition a kind ofly to encourage the method for at least one electroluminescence pigment especially had in valency or secure file for non-contact type.At this, alternating voltage is applied at least one electrode.The alternating voltage be applied on electrode may also be referred to as driving voltage.At least one electrode described so constructs, and the dielectric (flux) density of the field produced along predetermined radiation direction by described electrode is changed.Described electric field forms exciting field at this.Therefore, electrode constructs according to one of previous described embodiment.Equipment for non-contact type excitation has multiple electrode, and each in wherein said electrode so constructs, and makes to be changed by the dielectric (flux) density of electrode along the producible field of predetermined radiation direction.
According to the present invention, all electrodes have common radiation direction.
Described method can be implemented by means of the equipment according to one of previously described embodiment at this.
In addition, electrode can be so directed, make radiation direction towards have valency or secure file directed, especially with have the surface of valency or secure file vertically directed.
In addition, so can produce alternating voltage, make driving voltage amplitude be arranged in the scope of 100V to 5kV.Also the frequency of driving voltage can be regulated.Frequency especially can be arranged in the scope of 30kHz to 20MHz.Preferably, excitation frequency is arranged in the scope of 70kHz to 100kHz.
Driving voltage can have different forms.Driving voltage can be such as rectangular voltage, triangular voltage, trapeziodal voltage, but is preferably sinusoidal-shaped voltage.
According to a further aspect in the invention, a kind ofly the equipment of at least one electroluminescence pigment especially had in valency or secure file is encouraged to may be used for solveing the technical problem for non-contact type, wherein said equipment comprises at least one electrode, at least one electrode wherein said so constructs, and the dielectric (flux) density of the field produced along predetermined radiation direction by described electrode is changed.According to another aspect, in addition a kind ofly the method for at least one electroluminescence pigment especially had in valency or secure file is encouraged to may be used for solveing the technical problem for non-contact type, wherein alternating voltage is applied at least one electrode, at least one electrode wherein said so constructs, and the dielectric (flux) density of the electric field produced along predetermined radiation direction by described electrode is changed.Can expand for the technical characteristic of the expansion scheme of the equipment according to first aspect at this according to equipment on the other hand.Can expand for the technical characteristic of the expansion scheme of the method according to first aspect at this according to method on the other hand.These expansion scheme have the advantage identical with the expansion scheme of method with the equipment according to first aspect.Can implement by means of according to equipment on the other hand at this according to one/multiple method on the other hand.
Accompanying drawing explanation
The present invention is elaborated below according to multiple embodiment.Accompanying drawing illustrates:
Fig. 1: encourage the schematic block circuit diagram of the equipment of at least one electroluminescence pigment for non-contact type,
Fig. 2 a: according to the xsect of electrode of the present invention,
Fig. 2 b: the xsect of another electrode,
Fig. 3: according to electrode of the present invention and the schematic diagram having valency or secure file,
Fig. 4: electrode assembly and the schematic diagram having valency or secure file of tufted,
Fig. 5: the vertical view of the electrode assembly of tufted shown in Figure 4,
Fig. 6: the vertical view of another electrode assembly,
Fig. 7: electrode assembly shown in Figure 6 and the schematic diagram having valency or secure file.
Embodiment
Below, identical Reference numeral represents the element with same or similar technical characteristic.
Shown in Figure 1ly encourage the schematic block circuit diagram of the equipment 1 of at least one electroluminescence pigment (not shown) in valency or secure file 2 (such as seeing Fig. 3) for non-contact type.Described equipment 1 comprises direct voltage source 3, such as battery.Direct voltage source 3 is electrically connected with inverter 4, and described equipment 1 comprises described inverter equally.Inverters 4, the output voltage of direct voltage source 3 is convertible into the alternating voltage with predetermined excitation frequency.At outgoing side, inverter 4 is electrically connected with transformer 5.The alternating voltage produced by inverter 4 is converted to the driving voltage with desired amplitude by transformer 5.At outgoing side, transformer 5 is connected with the electrode 6 schematically shown, and the driving voltage wherein produced by transformer 5 applies on the electrode 6.Electrode 6 produces exciting field 7 at this below as also elaborated.
Therefore, electric excitation field can produce by resonant circuit, wherein can than the resonance frequency of the excitation frequency of general so far until 30kHz selective resonance circuit higher.This allows the voltage amplitude reducing driving voltage in an advantageous manner.
The structure space of the element of resonant circuit can be reduced again thus.Resonant circuit such as at least can be made up of the electric capacity of the secondary inductance of transformer and electrode.General in the equipment of the inspection of document so far, use the excitation frequency of 30kHz and have until the driving voltage of amplitude of 30kV.
High excitation frequency by favourable mode with the High variation speed of the field reversal of electric excitation field for condition (dU/dt).Because the pace of change of exciting field is also depended in the transmitting excitation of electroluminescence pigment, so can reduce driving voltage amplitude.Energy, magnetic energy namely to be stored or electric flux in a resonant circuit to be stored is also reduced by the reduction of driving voltage amplitude.This can reduce the structure space of such as transformer in an advantageous manner.Such as, reduce when energy is lower for transformer for stored magnetic energy FERRITE CORE for required structure space.Meanwhile, the reduction of the maximum voltage of driving voltage causes the reduction of the insulation requirements of the winding of such as transformer.And this causes again the reduction of structure space requirement.In addition, to avoid thus or the less desirable heating of restriction system.
In addition, advantageously draw, also obtain the safety in operation of the improvement of transformer when driving voltage amplitude reduces.Described transformer such as when driving voltage amplitude reduces for mankind user stores less energy, described energy may such as touch time be dangerous for user.
Driving voltage can have the amplitude of maximum 6kV.Exciting field 7 (is such as shown in that Fig. 2 a) is used herein to the electroluminescence pigment encouraging and have in valency or secure file 2.
Xsect according to electrode 6 of the present invention is shown in fig. 2 a.Electrode 6 has central longitudinal axis 8.The radiation direction 9 of electrode 6 is shown in addition.Described radiation direction and central longitudinal axis 8 orientation abreast.Electrode 6 is towards radiation side end 10 shrinking.At this, electrode 6 has tapered segment 11 at radiation side end 10 place.In addition, the change of the field wire of exciting field 7 is shown in fig. 2 a, described field wire leaves from electrode 6.With the cross sectional planes 12 of radiation direction 9 vertically orientation, the dielectric (flux) density change of exciting field 7.Dielectric (flux) density especially changes in predetermined region 13, and wherein predetermined region is run through by the whole electric excitation field 7 produced by electrode 6.At this illustrate, flux density is from the edge in region 13 towards following increase: described point, central longitudinal axis 8 is crossing with cross sectional planes 12.Therefore, the space distribution of the dielectric (flux) density of exciting field 7 has just what a has the region of flux peak density.
The xsect of another electrode 14 is shown in figure 2b.Cross sectional planes 12 with the central radiation direction 9 of electrode 14 vertically orientation is shown equally.Region 13 is shown in addition, and this region is run through by the whole exciting field produced by electrode.But be different from Fig. 2 a, dielectric (flux) density is not towards following increase: in described point, the central longitudinal axis 8 of electrode 14 is crossing with cross sectional planes 12.The desired concentration of local spatially of unrealized field wire thus, described field wire can realize the reliable excitation of electroluminescence pigment.
Electrode 6 shown in Figure 3 and the schematic diagram having valency or secure file 2.At this, electrode 6, so relative to having valency or secure file 2 to arrange, makes the radiation direction 9 of the exciting field 7 produced by electrode 6 and the surface 15 vertically orientation having valency or secure file 2.Be furnished with safety element 16 on the surface 15, described safety element comprises electroluminescence pigment (not shown).Described electroluminescence pigment so can be encouraged by electric excitation field 7, makes electroluminescence pigment launch luminous beam 17.By the entity structure of electrode 6, in the region of safety element 16, obtain the region of the high dielectric (flux) density with exciting field 7.If be furnished with electroluminescence pigment in this region, then also can encourage described electroluminescence pigment when using the relatively low driving voltage such as with amplitude between 100V and 5kV.
The illustrative arrangement having valency or secure file 2 with safety element 16 and electrode assembly 18 shown in Figure 4, described safety element is arranged on the surface 15 of valency or secure file 2.Electrode assembly 18 comprises multiple electrode 6, and the radiation direction 9 of described multiple electrode is parallel to each other.Each in electrode 6 produces unshowned exciting field 7, and (such as see Fig. 2 a), this exciting field constructs corresponding to elaboration done in fig. 2 a.All electrodes 6 electrically connect jointly, wherein transformer 5 shown in Figure 4, and the output voltage of described transformer, i.e. driving voltage are applied on all electrodes 6 simultaneously.
The vertical view of electrode assembly 18 shown in Figure 4 shown in Figure 5.At this illustrate, each electrode 6 tufted ground or pencil ground are arranged.At this, between each electrode 6, change with the spacing of electrode 6 the most contiguous respectively and direction.Therefore the stochastic space obtaining electrode 6 is arranged, it also causes the stochastic space distribution in the region of the high or maximum flux density with exciting field 7.
By electrode assembly shown in Figure 5, increase perturbed surface by favourable mode and therefore also increase the light emitting surface (such as seeing Fig. 4) of safety element 16.In order to make minimise wear, one of electrode assembly 18 electrode 6 or all electrodes 6 can be cast in a plastic material, especially in the plastic material of high pressure resistant and good insulation, such as with UV cured epoxide casting, the casting of 2K epoxide, silicones casting, thermoplastic polyurethane (TPU) casting or the casting of injection mo(u)lding polymeric material.This avoids the generation of the tip place corona at electrode 6 in an advantageous manner, wherein makes minimise wear simultaneously.
The vertical view of another favourable electrode assembly 18 shown in Figure 6.At this, the electrode 6 of electrode assembly 18 is so arranged, makes electrode 6 comprise a region 19, wherein in described region 19, is provided with recess 20.This region 19 can be such as the region 19 surrounded by the connecting line 22 of electrode 6.The connecting line 22 of electrode 6 can be such as circular at this.Therefore, electrode 6 is arranged on round line with predetermined mutual spacing, and wherein circle has predetermined radius.Obviously other forms of this layout can also be considered, such as, on the connecting line of rectangle.
The boring that recess 20 or opening such as can be configured to the boring of blind hole shape or be configured to continuous print, namely open wide in both sides.Recess 20 can be tubular.Such as, can the aliging with the axis of symmetry of tubular recess 20 of connecting line 22.
Recess 20 also can be used as optical detecting channel or form optical detecting channel, wherein by recess 20, beam, the beam such as launched by the electroluminescence pigment of excited target can arrive optical detection apparatus 21 (see Fig. 7) or arrive the eyes of user.
Therefore draw, electrode 6 is arranged around optical detecting channel.Can realize thus, the excitation of the light launched and detection can be carried out from such as having an only common side of valency or secure file 2.
Electrode assembly 18 shown in Figure 6 shown in Figure 7 and the schematic diagram having valency or secure file 2.This can be seen that, the housing hollow cylinder shape ground structure of electrode assembly 18 or electrode assembly 18, wherein arranges, is such as cast with electrode 6 in shroud segment 23.The bottom surface 24 of the internal capacity of hollow cylinder is furnished with optical sensor 21, and described bottom surface forms recess 20.
(such as see that Fig. 2 a) loads the safety element 16 having valency or secure file 2 comprising unshowned electroluminescence pigment, radiation direction 9 and the surface 15 vertically orientation having valency or safety element 2 of the exciting field 7 wherein produced by electrode 6 with exciting field 7.The luminous beam launched by electroluminescence pigment arrives in the surveyed area of optical sensor 21 through recess 20.It is clear that it is possible, be furnished with such as the optical element that beam guides or beam is assembled in the recess 20 being used as optical detecting channel, such as lens.Optical sensor 21 can be such as the photodiode with the amplifier be connected to below.By illustrated embodiment produce in an advantageous manner inspection of document equipment, the structurally structure closely of especially Portable document inspection machine.
Inverter 4 shown in Figure 1 such as may be embodied as pierce circuit, and described pierce circuit such as comprises an operation amplifier circuit and two FET as push-pull output stage.Transformer 5 such as can comprise transformer coil, and described transformer coil is around in FERRITE CORE.On the winding of the circuit of circuit shown in electrode 6 such as can only be connected in FIG, the coil of such as transformer 5.Preferably, with exciting field 7, (such as see that Fig. 2 excitation frequency a) is run, described excitation frequency is greater than audible frequencies to the circuit in FIG, such as, frequency between 30kHz to 20MHz, preferably in the scope of 70kHz to 100kHz.
Claims (9)
1. encourage the equipment of at least one electroluminescence pigment especially had in valency or secure file (2) for non-contact type, wherein, described equipment (1) comprises at least one electrode (6),
Wherein, described at least one electrode (6) so constructs, make to be changed by the dielectric (flux) density of described electrode (6) along the field (7) that predetermined radiation direction (9) produces, wherein, described equipment has multiple electrode (6), wherein, each in described electrode (6) so constructs, make to be changed by the dielectric (flux) density of an electrode (6) along the field (7) that predetermined radiation direction (9) can produce
It is characterized in that,
All electrodes (6) have common radiation direction.
2. equipment according to claim 1, it is characterized in that, in the predetermined region (13) of the vertically cross sectional planes (12) of orientation of the predetermined radiation direction (9) with described electrode (6), dielectric (flux) density changes, wherein, described predetermined region (13) is run through by whole share of the electric field (7) produced by described electrode (6) or predetermined share.
3. equipment according to claim 2, it is characterized in that, described at least one subregion in the predetermined region (13) of described cross sectional planes (12), dielectric (flux) density is than higher in other subregions of described predetermined region (13).
4. equipment according to any one of claim 1 to 3, is characterized in that, described at least one electrode (6) is towards radiation side end shrinking.
5. equipment according to claim 4, is characterized in that, described electrode (6) has taper or conical section.
6. equipment according to any one of claim 1 to 5, is characterized in that, described electrode structure is line.
7. equipment according to any one of claim 1 to 6, is characterized in that, an electrode (6) is less than or equal to predetermined maximum spacing with the spacing of an adjacent electrode (6).
8. the equipment according to any one of claim 1 or 7, is characterized in that, multiple electrode (6) electrically connects jointly.
9. one kind is encouraged the method for at least one electroluminescence pigment especially had in valency or secure file (2) for non-contact type, wherein, alternating voltage is applied at least one electrode (6), wherein, described at least one electrode (6) so constructs, the dielectric (flux) density of the electric field (7) produced along predetermined radiation direction (9) by described electrode (6) is changed, wherein, for non-contact type the equipment (1) that encourages there is multiple electrode (6), wherein, each in described electrode (6) so constructs, make to be changed by the dielectric (flux) density of an electrode (6) along the field (7) that predetermined radiation direction (9) produces,
It is characterized in that,
All electrodes (6) have common radiation direction.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013205052.6 | 2013-03-21 | ||
| DE102013205052.6A DE102013205052A1 (en) | 2013-03-21 | 2013-03-21 | Apparatus and method for contactless excitation |
| PCT/EP2014/055585 WO2014147169A1 (en) | 2013-03-21 | 2014-03-20 | Device and method for exciting electroluminescent pigments without contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105247417A true CN105247417A (en) | 2016-01-13 |
| CN105247417B CN105247417B (en) | 2018-11-09 |
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ID=50343774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480017332.9A Active CN105247417B (en) | 2013-03-21 | 2014-03-20 | For non-contact type encourage the device and method of electroluminescent pigment |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2976680B1 (en) |
| CN (1) | CN105247417B (en) |
| DE (1) | DE102013205052A1 (en) |
| TW (1) | TWI625676B (en) |
| WO (1) | WO2014147169A1 (en) |
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|---|---|---|---|---|
| DE19525453A1 (en) * | 1995-07-13 | 1997-01-16 | Eltex Elektrostatik Gmbh | Device for removing the gaseous laminar boundary layer |
| US6208499B1 (en) * | 1993-07-12 | 2001-03-27 | Minolta Co., Ltd. | Corona discharge device |
| CN1339145A (en) * | 1999-02-02 | 2002-03-06 | 联邦印刷有限公司 | Device for validating authenticity features on documents of value and security decuments |
| US20110103836A1 (en) * | 2009-10-29 | 2011-05-05 | Katsumi Adachi | Charging device, image forming apparatus comprising charging device, and method for forming discharge electrode |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10326644A1 (en) | 2003-06-11 | 2005-01-13 | Bundesdruckerei Gmbh | Value document with a security element and method for producing the value document |
| DE102004022752B4 (en) * | 2004-05-07 | 2018-03-08 | Bundesdruckerei Gmbh | Apparatus for checking the authenticity of a value or security document |
| DE102004045211B4 (en) * | 2004-09-17 | 2015-07-09 | Ovd Kinegram Ag | Security document with electrically controlled display element |
| CN101398950B (en) * | 2007-09-25 | 2010-12-22 | 中国印钞造币总公司 | Method for authenticating document of value |
| DE102008047636B4 (en) | 2008-09-17 | 2015-09-03 | Bundesdruckerei Gmbh | Device for automatic authentication of value and security documents |
| CN202433978U (en) * | 2012-02-24 | 2012-09-12 | 湖南丰汇银佳科技有限公司 | Paper money authentication device based on spectral analysis technology |
-
2013
- 2013-03-21 DE DE102013205052.6A patent/DE102013205052A1/en active Pending
-
2014
- 2014-03-13 TW TW103109096A patent/TWI625676B/en active
- 2014-03-20 EP EP14711746.9A patent/EP2976680B1/en active Active
- 2014-03-20 WO PCT/EP2014/055585 patent/WO2014147169A1/en active Application Filing
- 2014-03-20 CN CN201480017332.9A patent/CN105247417B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6208499B1 (en) * | 1993-07-12 | 2001-03-27 | Minolta Co., Ltd. | Corona discharge device |
| DE19525453A1 (en) * | 1995-07-13 | 1997-01-16 | Eltex Elektrostatik Gmbh | Device for removing the gaseous laminar boundary layer |
| CN1339145A (en) * | 1999-02-02 | 2002-03-06 | 联邦印刷有限公司 | Device for validating authenticity features on documents of value and security decuments |
| US20110103836A1 (en) * | 2009-10-29 | 2011-05-05 | Katsumi Adachi | Charging device, image forming apparatus comprising charging device, and method for forming discharge electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201443789A (en) | 2014-11-16 |
| EP2976680B1 (en) | 2018-01-17 |
| WO2014147169A1 (en) | 2014-09-25 |
| EP2976680A1 (en) | 2016-01-27 |
| TWI625676B (en) | 2018-06-01 |
| DE102013205052A1 (en) | 2014-09-25 |
| CN105247417B (en) | 2018-11-09 |
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