MXPA97007509A - Procedure and devices for the proof of seguri documents - Google Patents

Abstract

The present invention relates to a method and an installation for the testing or verification of security documents. The procedure for testing security documents involves the use of capacitive couplings, known per se, to transmit electrical signals from the transmitting antennas to the receiving antennas through electrically conductive safety markings, and amplify them, which are then evaluated in amplitude and time course, and compared with existing signal response, when they are transformed into easily interpreted signals, which present easily comparable parameters. To obtain a specific definition of values, a selective amplifier is additionally coupled with the electronic evaluation system. A specific definition of values is then achieved by means of the evaluation electronics according to the invention, it being possible to determine a time limit for the amplitude of the signal tested by means of a controller, for example, this time will differ from the duration of the amplitude response for all other values ie the different billet

Description

PROCEDURE AND DEVICES FOR THE PROOF OF SECURITY DOCUMENTS The invention relates to a method and devices for testing security documents according to the main idea of claim 1. Multiple methods, devices, methods and systems of -Ja - test are known for the determination of the authenticity of security documents, to monitor the ability to use to determine their position in the work machines as well as for the determination of the class and its enumeration. DE-PS 1223594 describes a device for capacitively sensing the signal carriers, wherein the sensing capacitors consist of sensor electrodes arranged on both sides of the track 1 bearing the mark or signal. The test safety of this apparatus is not given with respect to the strips, bands or other electrically conductive particles that are introduced, pressed or carried. In the patent document DE-PS 1774290 a measurement arrangement for the automatic evaluation of a characteristic mark of a banknote in a device for the authenticity test of banknotes, by means of capacitive couplings JÉ * of electrodes is presented that are distributed. This known measuring arrangement allows at the currently required processing speeds no exact fixing of the characteristic mark that is found and even in a slower verification form only the existence of such mark is determined and with this the known counterfeit is not verified. present with the use of electrically conducting constituent parts for example in banknotes. In DE-OS 2619457, magnetic properties of a test strip found on a banknote are measured. A verification of authenticity in ferromagnetic security threads in value prints with the application of a magnetic field is described in DE-SP 2834287. This test method is too slow and requires an exact positioning of the test object each time. DE-PS 2760165 describes a device technically usable for the test where the authenticity of the banknotes is especially terminated in the second part of the test, when the thickness difference and the fluorescent properties are measured, the test only corresponds to those properties and not the state of the counterfeit in progress. Counterfeit money with watermarks, and fluorescent paper or colors can not be recognized as not authentic with that device. Also in the DE-OS 3236373 and 3236374 under other reading heads described in processing machines that together with the markings in the security documents together form an electrical capacitor and putting the ferroelectric between the capacitive electrodes of the reading device cause a variation Defined value of capacity are not suitable for fast working machines and are not suitable for testing European banknotes that are currently in progress. A test of the electrically conductive safety wire by means of the application of oscillators and oscillating circuits in accordance with DE-E 2912721 has not been used due to the low safety evaluation at high technical expense and complicated structure. US Pat. No. 5,308,992 describes a measurement array formed of optical and capacitive sensors which, however, require an exact position of the test strip. In order to increase the failure safety and to differentiate different test objects (for example different values), the additional application of a magnetic sensor is proposed which makes the measurement installation even more expensive and complicated. The capacitive sensor presents with respect to the pre-selection of the bank notes only the existence of a safety wire that conducts electrically. A test arrangement according to the patent application DE 4 103 832 is known, by means of which capacitive and / or letro-optical sensors and / or millimeter wave sensors are arranged along a test strip. The test or verification of the dielectric properties of bank notes is the object of that - written. DE 43 25 027 describes a method and an arrangement for the authenticity test of banknotes, where variations in field strength are evaluated by means of metal safety strips by the bridge or a high-frequency field. The application to a money changer is only suitable in case of very low speeds due to the low sensitivity and the decrease of the stored energy. In addition also wet and capable driving test objects are considered as authentic. The breaks in the metal strips of the authentic banknotes are not recognized, so that the machine reaches a failure stop. Because of the low sensitivity of the arrangement, the distance between the electrodes must be very small around the metallic security threads of the banknotes, which prevents the use in machines for the production of notes or banknotes that work quickly. The * row positioning of several of these sensors is only possible if they are placed between them at a relatively large distance, to which the sensors do not influence each other. In WO 94/22114 an apparatus for recognizing metallic conductive safety wires is described. Also here they are recognized as authentic flat objects capable of driving and wet, since a measurement of the electrical charge is made by the sensor electrodes. A classification of security threads of different dimensions is not provided. EP 0 204 574 describes a method for fixing or establishing a magnetic printed design with the help of electromagnetic induction. Since the usual copying apparatuses can be equipped with conductive inks, this kind of verification is very limited in its ability to combat the current quality of the counterfeit. The disadvantages of the known test methods and the respective apparatuses are first of all their high cost and insufficient security, for the fast course of the banknotes to find counterfeit money-making machines. It is disadvantageous in the known measuring arrangements to test the capacitive properties that a sufficiently small capacitive resistance is produced only at low frequency ranges of 10 to 220 KHz and only at very small distances between the electrodes and the wires. In addition, in this frequency field the influence of the dielectric variation is still too great, this, the material a high dielectric number leads to increase the capacity and with that to decrease the capacitive resistance between the antennas. For example * A wet counterfeit is recognized as authentic. In practice, these arrangements have not found their way into practice, especially in the authenticity test by machines. EP 589 195 A2 describes a method in which the test of the authenticity of the test objects is used to obtain an indicator signal for the sensing of a palpation zone with magnetic elements »Highly penetrating, with the help of a device with an avoidance coil and a sensing coil, a coordinated code is obtained and the authenticity is confirmed by the coincidence of the indicator signal and the coordinated code. This test procedure is limited to plastic cards, paper documents and a few European banknotes provided with magnetic or magnetizable particles, other test procedures as described in EP 204 574 A2, 553 402 Al and 560 023 Al , where geometrical and / or physical properties of the tested objects are tested in a classification process, they are only usable for one type of object to be tested, very complicated and have not been applied in practice for processing machines due to the high speed needed for a test method of authenticity, in a work process.

- It is the task of the present invention to eliminate the aforementioned disadvantages of the known test apparatus and to propose a procedure, with which a secure recognition of a characteristic test mark is possible, which is usable for many kinds of banknotes and values also for example in wet or intentionally dampened and moistened test objects, and that can distinguish between them, that presents a technical expense under whose application is suitable for equipping # »Work machines and correspond to the rapid passage of the test objects in the processing machines. As a characteristic test mark, an electrically conductive safety wire or a security mark constructed flat on the banknote or value document is considered. Furthermore, it is a task to carry out the test procedure in such a way that it can be switched to carry out an authenticity test before a selection or classification by classes and values. The objective position of the invention for carrying out the method consists in the development of an apparatus for testing security documents, having as security element a strip in the form of an electrically conductive strip or wire for the test both continuous electrically conductive as well as such strips, which contain several electrically conductive zones although isolated from each other. Example of such security documents are the banknotes of the United States, which for their security carry electrically conductive characteristics but isolated from each other. In current practice it is necessary to test systems that do not have problems for installation in the processing machines, which not only recognize high quality counterfeit but also original documents of low quality, since these in practice frequently occur and lead to solutions false, which significantly disrupt the course of operation of the processing machines. The method according to the invention for the proof of security documents provides, with the use of capacitive couplings known per se, that the electrical signals of the transmitting antennas pass through the safety marks electrically conductive characteristics to the receiving and amplified antennas , which are subsequently evaluated in amplitude or time course comparing with the courses of existing signals, in which the course or careers of the signal will be transformed, which will present easily comparable parameters. For the realization of the procedure with its steps of procedures to be written in more detail for banknotes, documents, valuable papers and similar security threads or strips or a security mark constructed flat using capacitive couplings a test facility is proposed, which for example finds application in a machine for processing or handling bank notes, preferably a singing machine. In a case assembly, a verification sensor is arranged in the area of optical and / or format magnetic sensors. The machine transfers the banknotes and / or the value papers to the test facility so that they pass through it. The sensor or test facility consists of several antennas and / or electrodes, the antennas or electrodes have transversely to the transport direction of the verified objects such a longitudinal extension in relation to the surface, that also with a defined lateral play space of the object verified and independently thereof, in each case the security strips or security threads still sufficiently affect the antennas and / or electrodes. The antennas and / or the electrodes of the verifying or testing unit correspond to devices, known per se, of sliding devices, pressure rollers and / or conveyor belts, to maintain a defined distance the documents to be verified during a rapid step together to the antennas and / or to press the electrodes. By the arrangement or coordination according to the present invention of the test unit in the area of optical sensors and / or magnetices and / or format, which function for the recognition of the geometry, place, color and the like, simultaneously causes an activation of the sensor installation. One or more antennas and / or electrodes are powered with high and / or low frequency energy and / or with continuous voltage, and one or more antennas and / or electrodes recover a part of the energy radiated through a security strip or security thread, the applied voltage varies in one or more of the receiving antennas and / or receiving electrodes. To be able to find comparable information for example with respect to the authenticity, the capacity of use of the documents or the value of the banknotes, constant conditions of passage, such as speed, are needed for the comparable test objects. The antennas and / or the electrodes send a voltage to the evaluation electronics. the evaluation electronics communicate a voltage easily comparable depending on the signal form of the received voltage, to lower the disturbing and strange energies as well as to prevent them from affecting the basic conductive capacities of the test objects in the measurement results, you can use special filters and / or phase equalizers. The output pulse of the evaluation electronics is independent of the step speed. To allow a specific selectivity of the test installation. The evaluation electronics are additionally coupled to a selective amplifier. This transforms the voltage that comes from the test sensor installation into an easily comparable voltage, which depends on the amplitude of the voltage that arrives. In a definition referring to the categories (electrically conductive safety strips or security threads or other marks that you want) of the evaluation electronics, additional amplitude limits are determined, whose course is so close to a test signal, that with the difference between the fixed and defined amplitude limits and the application of the maximum possible amplitude a determination of authenticity of all the objects to be tested is made. This means, too * 'novel falsifications, which give a signal, which would usually be taken as an evaluation signal, but which will now be determined as a false by the evaluation electronics according to the present invention. A specific definition of value by means of the evaluation electronics according to the invention, for example for all bank notes of a single country with similar security strips, will be achieved in accordance with the present invention, when for a value a time limit of the amplitude of the test signal, for example by means of a controller, which differentiates all the usual values by the duration of the amplitude course. In values with a course of equal duration of the amplitude of a test signal an additional test is carried out, for example by recognition and / or color differentiation and / or magnetice and / or format test method. For example, the recognition signals sent from the light vessels are linked to the signal of the test sensor installation according to the invention and are generated at a specific output pulse of the machine. A variation of the procedure consists in that one or more pairs of transmitting antennas are controlled to test security documents. Due to the capacitive coupling between each of the emitting antennas, an electrical conductive marking is produced on the security strips and a signal determining the authenticity that arrives at an input of an amplifier is sent to the receiving antennas opposite the emitters. The phase shift is controlled from a second emission antenna with respect to the first one, with a capacitive coupling of the signal to the receiving antenna being carried out, since in the region of effect or action there is no electrically conductive safety strip. Thus by this arrangement a test of an electrically conductive strip passing through is already possible. Displaced with respect to those pairs of antennas are other pairs of transmit and receive antennas, which are adjusted in their measurement and distance to the electrically conductive markings of the security strip. Due to the transport of the object to be tested at a defined distance from the sensor installation, characteristic amplitudes and time signals are obtained and with this signals can be evaluated from the receiving antennas for the evaluation electronics. With this a test is carried out, which has the capacity, to recognize and correspondingly evaluate several electrically conductive marks, which are isolated from each other. So it does not matter that the insulation is observable between the conductive marks »Electrically, as for example in the United States banknotes or that the insulation is made in electrically conductive safety strips by bridges according to the manufacture, as for example is the case in the German banknotes. A microcontroller can compare the number of interrupts with the stored values. By placing several pairs of transmitting and receiving antennas and corresponding electronic evaluation it is possible to obtain satisfactory information about the authenticity of the document, since in spite of lateral displacements when introducing the object to be tested in the test facility, it will work satisfactorily. If emission and reception antennas are arranged in the entire working width of the processing machine, a neutral authenticity test is made possible in the position of the security document. It does not represent any paper if the document is inserted on the front side or on the rear side if the safety strips are arranged on the right or left side and this is transverse to the direction of travel. This way, documents will be verifiable, that both in the format and in the arrangement of the security strips can be differentiated in the direction of transport. For different classes or types of security strips, not only is it possible to classify authenticity, but also a coordination or arrangement of different documents, for example of different values. In the transport direction of the banknotes it is possible according to the present invention to coordinate the installation of sensors of the invention another one sooner or later. In this case the output signal of that sensor installation (sensorik in German) is linked to the output signal of the sensor installation according to the invention (double test) without the need for a software change for the processing machine. concerned, for example in a post-equipment with a test facility for the method according to the invention. The advantageous features of the present invention are apparent both from the claims and from the description and from the drawings, which may present the particular characteristics individually or combined in different ways. In the drawings it is shown: Figure 1 an image of the switching block of the evaluating switchgear; Figure 2 capture curves in the course of a banknote at different rate of passage; Figure 3 specific value acquisition curves; Figure 4 capture curves of multiple counterfeit banknotes; FIG. 5 shows an image of a switching block of the evaluation switch with double test; Figures 6 cut through a schematic representation of a test facility; Figure 7 the test sensor installation (Prufsensorik); Fig. 8 an image of the switching block of a test facility (Prufeinrichtung); Figure 9 arrangement of the test sensor installation in a banknote processing or handling machine. The procedure that will be described in more detail below with reference to different apparatuses and arrangements is based on the essentials in carrying out the following steps: capacitive coupling of electrical signals from the emission antennas through electrically conductive safety materials towards antennas of reception amplifiers and transformers of the different signals in amplitude and time course in easily comparable signals and comparison of the same, existing signal contests to indicate and evaluate correspondingly the authenticity of the documents to be tested. A machine coupled to the test facility transports banknotes and valuable documents through the area of the test facility. The light cabinets activate the test sensor installation here. The transmitting antenna is fed with high frequency energy in the present embodiment with 6 MHz energy. The passage of the security strips or the security threads through the test field causes the reception antenna to take up again a part of the radiated energy. This changes the existing high frequency voltage in the receiving antenna. The reason for this is known as the capacitive coupling between the emitting antenna and the receiver based on the electrical conductive capacity of the security strips or threads. The high frequency conductive capacity is different in the individual values in order to obtain specific information of the values with the help of the evaluating commutation. Constant step conditions are necessary in the object to be tested in a work step. With the test unit and its sensor installation a functional unit is represented that has an electronic device that we will call simply evaluation electronics consisting of the essentials of transformer, analog-digital and controller or integrator 15, trigger 16, controller, monoflop 17, as well as selectively an AND 18 link through armored conduits. Possible evaluation electronics are shown in FIG. 1 as a switching block. The figures mean the following: 12 a high frequency transmitter, 13 the high frequency receiver which takes the energy radiated by the receiving antenna 9, in the selective amplifier 14 the signal used is used to specify the value and / or the signal authenticity, 15 an integrator, 16 a trigger, which in addition to the existing signals captures the activated signals of the evaluating switching of the light cabinet 20 and produces as a coordinated impulse in time through the monoflop 17, the output signal for the test object that has been found authentic. As shown in Figure 4 by the curves A and B in the passage of the banknotes by counterfeits 26 no output signal comparable to the output signals for authentic found banknotes is produced. The defined shielding of the test sensor system and of the electronic evaluation of electric and electromagnetic fields as well as the arrangement in the sensor area of the light cabinet guarantee a high ratio of the useful signal and the disturbance signal and allow in relation to the Forced guidance through the transport bands n Union with a defined speed of the course of passage of the banknotes a specific selectivity of values in the test facility. Another attempt of this method according to the invention consists in that for example the moisture content and / or the degree of dirt of the test object and / or the banknotes and / or the value documents will no longer be presented basically as sources of disorder. Figure 6 shows a schematic representation - of a test facility in court which finds application in a banknote processing machine, preferably a singing machine according to the method indicated above. In the housing group 1 there is a machine carrier 2 which, in its horizontally running branch 3, has a test sensor system which, in the area of the light cabinets 4, 5, is arranged on a material 6, ß - non-conductive carrier of the branch 3. The carrier material 6 has recesses and / or interruptions 7 for the passage of light from the light cabinets 4, 5. These recesses and / or interruptions 7 can disappear as long as carrier material is used 6, transparent as glass. The test sensor installation consists of several strip sensors 8.9, in this example consists of two, properly a strip sensor 8 as a transmitting antenna and a strip sensor 9, as a receiving antenna. The strip sensors 8,9 have transversely to the transport direction of the banknotes 11, such extension, longitudinal in relation to the surface that also with a defined lateral play space of the banknotes, and independently of this if a banknote 11 runs through the test facility with the front or rear side displaced upwards, in any case, the safety strands or strips will sufficiently carve the strip sensors 8,9 and will be driven below them by the installation test. Below the branch 3 and parallel to the conveyor belts 10 which run at a certain distance from the strip sensors 8 and 9 but so that the banknotes impress during their rapid passage the strip sensors 8 and 9. Between the bands of transport 11, light cabinets 4, 5 are arranged perpendicular to the direction of passage to the banknotes. The evaluation electronics are also placed in a shielded or armored area of the processing machine. In this exemplary embodiment, preferably in the part of the box in which, for example, the thickness adjustment device of the paper. The defined shielding of the test sensor system and the evaluation electronics with respect to the electric and electromagnetic fields as well as the arrangement of the test sensor system in the light cabinets 4 and 5 guarantee a high proportion of useful signal and of disorder and allow together with the forced conduction by the conveyor belts 10 in combination with a defined speed of passage of banknotes a specific selectivity in the values of the test facility, another further advancement of the installation in accordance with the invention consists in that the moisture content and / or the ? The degree of grime of the test object is no longer basically a source of disorder. In the transport direction of the banknotes, in addition to the sensor system according to the invention, a further sensor system (which in this example is not shown) may be provided, for example, for a magnetization test as shown in the switching block in FIG. Figure 5, placing it before, after or in the two W ^ positions. In this case the output signal of this sensor is coupled with the output signal of the sensor according to the invention without requiring a variation of the software for the processing machine considered, for example when subsequently equipping a machine with the installation of test according to the invention. The evaluation electronics that work in combination with the test sensor installation and the light cabinets send, as shown in figures 2 and 3, a DC voltage dependent on the amplitude of the received frequency voltage. , this is shown in the figures mentioned by the transmitted signals that are represented in the corresponding curves a. Figure 2 represents capture curves during the passage of a bank note with different travel speed. The curve a, shows the transmitted signal and the b, the output signal from the evaluation electronics, corresponds to a step of 500 bills per minute and v2, at a pitch of 1,800 bills per minute. The curve b, indicates how a banknote recognition signal provided from the light cabinets is linked to the signal of the test sensor installation and is generated in a specific output pulse of the machine. This impulse is independent of the speed of passage as seen in the comparison of the curves b, in figure 2. In figure 3, specific capture curves of values are shown during the passage of the notes or banknotes with different values. Curve a, again shows the signal transmitted from the test sensor installation, while b, represents the evaluation signal of a selective amplifier that is additionally coupled with the evaluation electronics, to allow a specific selectivity of the installation test in regards to value without additional sensors. In Figure 3, DE, means German values, CH, Swiss values, EG, Egyptian values and CN, Chinese Yuan of the 1990 series. The amplitude course of another type from the different class of safety strip, with respect to the high frequency energy captured, makes the values * Different tickets are clearly recognizable and thus can be collected by the evaluation electronics. In case a processing of the specific value signal is necessary, then a signal prepared additionally by the evaluation electronics is led to a specific classification of values, for example by means of a controller. As well as the different values are differentiable * by different threads or security strips, also counterfeits are recognized, as long as they present similar security strips or also only fractional parts of them. Figure 4 shows curves capturing eleven bills in a money changer machine; notes or banknotes with figures 21 to 25 and 27, 31; They were recognized as authentic banknotes. The test object number 26, is classified for the purpose of another test as forged, due to the lack of a security strip or due to an imperfect security strip, no signal was derived from the test sensor installation. In practice, in the absence of a signal or when stopping the processing machine by a non-specific signal of a banknote, then the counterfeit or sample incapable of use is removed, or mechanically placed especially. If the test unit is additionally connected to another test sensor installation, then this specific output pulse of the machine will show the recognition of the corresponding security strip or thread and with the output signal that additional test of the processing machine will be linked AND. if f one of the two signs of authenticity, then the machine will be stopped and the employee will be able to withdraw the fake or failing banknote. Another possibility of application with a corresponding definition of the electronic evaluation unit is produced from the evaluation signals of the selective amplifier, as shown in FIG. 3, if for example in large processing machines that are also used for the purposes of classification of different values, if the amplitude limit marked in figure 3 A, is exceeded then the authentic security strips corresponding to a speed V2 will be recognized, which will correspond to the test sensor installation. To each value is coordinated a specific time t ,. To differentiate individual values, the times t, = t, ... t, to t, are defined as specific values t ,. For example, the tf, of the German value is selected higher than the t2, of the Swiss franc and the tf, of the Swiss franc is chosen greater than the t3, of the Egyptian value. Since the tf, of the German value with tf, should be selected as large as possible with the values not shown in figure 3, another specific value test is necessary with a known color recognition test method or format and / or magnetic within the processing machine, in this way the individual classified values are placed in a known manner in an appeal container. Especially for testing documents that do not have electrically conductive security strips, the processing machines will be equipped with a test sensing facility 54, as shown in Fig. 7, consisting of multiple emitting and receiving antennas that are arranged parallel to each other and orthogonal to the transport direction. For the test of the banknotes, they arrive in a common step to a processing machine, for example to a banknote changer, as well in a transport device where the security strips found in the tickets, are at their longest extension • thus approximately parallel to the transport direction, for example, a German note or banknote with its longest extension approximately transverse to the transport direction. The emitting antennas A2, A3, as well as the receiving antenna Al, are arranged in an opposite manner; 'displaced for this form several antennas of emission B2.i (i = l..n) and several antennas of reception Bl.i, each time a set of antennas. These sets or pairs are shifted to each other to lower an envelope of a signal from a transmitting antenna Bl.i, to a neighbor, but not corresponding receiving antenna Bl.k (k = l..n, j- k). The neighboring transmitting antennas (B2.i, B2.Í + 1), and the corresponding reception antennas (Bl.i, Bl.i + 1) are placed at a distance defined preferably at the distance between a transmitting antenna (B2. i) and the corresponding receiving antenna (Bl.i), in an alternate manner, to decrease disturbance inflows, antennas are alternated diagonally between each other preferably between the emitting antennas A2, A3, and the receiving antenna Al. 8, shows the block image of J § switching of the test installation according to the invention, with the control of the test sensor installation according to figure 7, if a document is fed to a processing machine, which is equipped with the test installation according to the invention, then this will be activated by means of light cabinets or similar sensors that determine the position. The frequency generator 41 controls the transmit antenna A2, and through a phase shifter 42, the transmit antenna A3; By means of the phase shift control, influences of disturbance due to extraneous energies are prevented, as well as falsified which do not present any difference in the electrical conductivity. This also refers to bank notes whose qualities have varied, for example, due to aging and / or mechanical damage, and / or humidity. Simultaneously, an n number of transmit antennas B2.i (i = l., N) is controlled through a second frequency generator 43, and a second phase shifter 44. Each time the emitting antennas B2.i, which do not they are in a row and are transverse to the direction of transport, they are controlled by phase shift to reduce the disturbing influences by extraneous energies and to prevent a capacitive over-coupling of a transmitter antenna B2.i, with a non-corresponding receiving antenna Bl.k (k = I., n, 1- k). The frequency presented by the signals of the two generators are selected in such a way that one frequency is not a multiple of the other or a multiple of the difference between two to prevent distortions of the signal in the reception antennas. In the test, a capacitive over-coupling of the signal from the transmitting antenna A2 takes place to the receiving antenna Al, through an electrically conductive safety pass strip, while the signal from the transmitting antenna A3 does not mesh capacitively to the receiving antenna Al. The shortest distance between the emitting antenna A2, and the emitting antenna Al, is smaller than the longest extension of the electrically conductive safety strip, in the smallest document to be tested , but the safety strips are located at any time during the test in the area of activity or action of the antenna transmitter A2, and the receiver Al, then the security strip is in the area of action of the antenna emitting A3 , and of the receiver Al, so that other functions analogous to the aforementioned case are fulfilled. In the reception antenna Al, a signal then arrives that by means of the rectifier 45, and the selective amplifier 46, provides a signal to the microcontroller 47, which causes a classification of authenticity by comparison of the signal of the selective amplifier 46, with a signal stored in the microcontroller 47, for example a special threshold value. If the threshold value is exceeded, then classifies the microcontroller 47, to the object to be tested as an object with electrically conductive safety wires, that is, in the German banknotes as authentic, if there are marks on the safety strip electrically conductive, which due to their extension are not picked up by the transmitting antenna A2, and the receiver Al, then recognition of them is possible thanks to the arrangement according to the invention of the emitting antennas B2.i, and the corresponding antennas transmitters Bl.i, since its distance is smaller by a multiple than the distance between the emitting antenna A2, and the receiving antenna Al. If, for example, it has the extension that is parallel to the transport direction of a document electrically conductive 1.5 mm, then for example, the distance between the emitting antenna B2.i, and the receiver Bl.i, of 1.3mm for example, is selected for example; To guarantee a safe capacitive over coupling, the test document is moved in the test to be tested with a defined speed in the area of action of the test sensor installation of the test apparatus or installation according to the present invention. j§ By means of the displaced arrangement of the sending antennas B2.i and of the receivers Bl. i, there is a tolerance equalization in the orthogonal displacement of the banknotes with respect to the transport direction of the document. In the receiving antennas Bl. i, the signals produced are fed through the rectifiers 48. 50, and the selective amplifiers 51 ... 53, to the microcontroller 47. According to the character or species and placement of the security thread in the document, the signals that penetrate the microcontroller 47, from the selective amplifier 46, 51 ... 53, in the course of frequency and amplitude. This makes it possible to classify the document by means of the microcontroller 47, by comparing the frequency and / or comparing the threshold value with the values already stored and stored in the microcontroller 47. These values are determined by means of manual introduction, programming or comparison with values, which are compared in the parameters with comparison documents already classified. The microcontroller 47 generates a machine specific signal, which characterizes the authenticity of the banknote to be tested. This classification signal of the micro-controller 5 is coupled in suitable indicator elements or in another elaboration to the corresponding cutting position of the processing machine. Just as • JM \ recognizes the different values for the different security strips or threads, counterfeits are also recognized as long as they contain imitated security strips or fractions thereof. By means of a compact construction of the entire test installation, especially by the formation of a unit by the sensors and the evaluation electronics as well as additional measures for the • shielding, it is possible to reduce the influences of disorder that in practice always have great importance. The arrangement in a processing machine is carried out in such a way that the transport of the tickets is not influenced by the presence of the test sensor installation. As a test installation according to the invention is integrated, for example, into one of the already existing banknote processing or handling machines, it is shown in figure 9. For this, the test sensor installation 54, structured from the sensor antennas A2, A3, B2.i, and the receiver antennas Al, Bl.i, is integrated into an existing conductive installation 56, tangentially and displaced with respect to the transport roller 55, so that additionally it takes the guidance function in the area of the test sensing facility 54. A bill to be tested therefore arrives without a means of pressure • |. { additional to the area of action of the sensors. The test sensor installation 54 is arranged tangentially to an existing conductive installation 56, which a safety document driven by the transport rollers 55, and which is to be tested, is led to the sensor station 54, opposite to the speed and distance defined. By means of the fixing agent corresponding to the conductive installation 56, B especially mutator screws at a defined distance between the transport roller 55, and the conductive installation 56,1 or the sensor 54. The parameters of the threshold values and the magnitudes of classification, take place by means of the switch not shown in the figures or through the corresponding Software of the microcontroller 47. In this way the user is in a position to vary the classification magnitudes by a simple commutation and to test other values. In practice, in the absence of a signal or a specific signal of the banknote, the processing or handling machine is stopped and the counterfeit or the no longer used part is removed. By means of lateral extension of an antenna arrangement across the width of the document, the influence of paper quality is decreased, age, humidity, etc., on the classification of authenticity, this also gives the possibility of a classification, for example in falsified, authentic tickets, and already well-used tickets. This classification is carried out by a corresponding evaluation of the amplitude and time courses of the signals given by selective amplifiers 46, 51..53, and the corresponding parameters of the threshold values by the evaluation micro controller 47. The calibration of the The microcontroller 47.1 is performed manually by controlling the Software or by testing special calibration documents, of which the authentic classification is known. In the last procedure, a calibration document of the test installation according to the invention is tested as indicated above, instead of comparing the signals to the outputs of the selective amplifier 46, 51 ... 53, with the existing signals in the microcontroller 47, the signals are stored as reference quantities in the microcontroller 47. Another structuring site for the test sensor installation 54 is produced by the patent application 195 18 229.4; according to this invention, the sensor installation 54 can be arranged, for example, at the end of a conductor installation 56, in the form of a circle arc, as shown in FIG. 10. Also here, drive devices necessary to push at distances or touching in a defined way the test installation in the test object. This possibility can be used if the displaced or tangential installation of the installation 54 can not be carried out in an arc-shaped zone of the conductor installation 56, since the pressure medium according to the invention, such as springs , or pressure rollers disappear, the test object will be mechanically underloaded by the test facility. The present method according to the invention has been explained by means of specific implementation variants of the test sensor and evaluation electronics in a money changer. However, it should be noted that the present invention is not limited to the particularities of the description in the exemplary embodiments, since variations and transformations exist in the context thereof. For example, different embodiments of the evaluation electronics are possible, which are oriented to the special action form of the selective amplifier.

Claims (21)

R E I V I N D I C A C I O N S

1. - Procedure for testing or verification of security documents using the capacitive coupling between emitter and receiver and transmission of energy between emitter and receiver by the bridge or an electromagnetic field by means of bands, threads, safety strips or constructed safety materials plans, as well as coordinated evaluation electronics, a method characterized in that in the area known per se of the optical sensors that exist in money processing machines, which correspond spatially with a capacitive test sensor installation in a processing machine and activate the test sensor installation, multiple antennas that are in one or several planes and act as emission or reception sensors, form test fields and transmit through the object to be tested depending on their geometry and conducting capacity electromagnetic energy over-coupling to the antennas, and several antennas at least in different positions, it is controlled and the transmitted energy is provided to a subsequently connected selective amplifier, to edit the energies of upset, as well as to decrease the basic conductive capabilities of the test objects, for example banknotes, a phase comparator as well as special filters connected after selective amplifier, to reduce extraneous energies and disturbances, as well as there is also an evaluation unit that allows a classification of the wires, bands, electrically conductive safety strips or the materials of safety constructed planes, where the test object in an undefined lateral position direction, is driven from ^ forced way through the test field during the process of the same. 2.- Procedure according to the. claim 1, characterized in that the electronic evaluation unit consists essentially of an analog / digital transformer and controller or integrator, trigger, controller, monoflop and / or AND link, determining the signal path at the output of the selective amplifier, the exceed the amplitude limit or the specific time of value. 3. Method according to claim 1 or 2, characterized in that an authenticity classification is carried out by means of the electronics when determining an amplitude limit for the authenticity of the value to be tested. 4. Method according to claims 1 or 2, characterized in that by means of the evaluation electronics the classification of different bills or value papers is performed when a specific time of value is selected preferably by means of the controller and then separated. the test objects with a time tj .. tk_a, tk + 1 .. tn. 5. Method according to claim 4, characterized in that in values with equal times an additional test takes place after the test of -4 authenticity. Method according to claims 1 or 2, characterized in that the evaluation electronics preferably produce one or more controllers by comparison of time and voltage comparison, a specific machine signal for placing the individual sorters in special drawers. or stacking containers. 7. Method according to claim 1 or 2, characterized in that the antennas and electrodes have such a longitudinal extension with reference to the surface transversely to the conveying direction of the object to be tested that also with a lateral play space of the test object and independently of it, that is if a test object passes with the front or rear side upwards by the test installation, in each case the safety strips or wires will act at a defined distance on the antennas or electrodes . 8. Procedure according to claims 1, 2, characterized in that an additional test is performed and its result is coupled with the signal of the evaluation electronics by means of the AND member, without the Software of the considered processing machine having to be modified. - 9.- Installation for testing security documents with elements to cause capacitive coupling, the transmission of energy between emitter and receiver when bridging an electromagnetic field by wire strips, safety strips or safety material constructed flat and electrically conductive and an evaluation electronics for the application of the method according to claim 1, installation characterized by * optical sensors known per se existing in the processing machine for the activation of a capacitive test sensor installation; * test fields that are formed of several sensors that act as transmitting or receiving antennas and that are in one or several planes; * a selective amplifier and * a phase comparator connected later •! ff to the previous one; * special filters to reduce the energies of disorder and strange as well as * an electronic evaluation, this is an electronic device consisting of the essentials of an analog / digital transformer and controller and integrator, trigger, controller, monoflop, and selective link AND , and the test object passes during the / k * test process in an undefined lateral positioning direction touching the sensors and with defined speed by means of a lower retainer or transport belt or rollers arranged in that area. 10.- Installation in accordance with the claim 9, characterized in that the sensors acting as transmitting or receiving antennas are constructed as strip sensors in a plane or two opposite planes or are constructed as mirror images. 11. Installation according to claim 9 or 10, characterized in that the strip sensors have recesses and / or interruptions and / or windows or that such are in the immediate vicinity of the strip sensors. 1

2. Installation according to one or more of claims 9-11, characterized in that the sensors in the test units are arranged as mirrors with the test areas and / or the security strips * | j O the wires or the security bands in relation to the objects to be tested, preferably banknotes, valuable documents and packaging. 13.- Installation to test security documents with elements for capacitive coupling, transmission of energy between the emitter and the receiver by means of the bridge or of an electromagnetic field by means of strips bands of security threads or materials of The safety drawings and an electronic evaluation system for the application of the method according to claim 5 are characterized in that several transmitting antennas and several receiving antennas forming a test sensor installation are arranged in such a way that both the electrically conductive strips and those that present several electrically conductive zones but isolated from each other, are verifiable, # where the test sensor installation is tangentially displaced to a conductive device in the form of an arc of a circle or is displaced parallel, and tangential to a transport roller and two antennas emitting antennas in controlled phase with low and high frequency are arranged orthogonally to the the longer extension direction of a security strip and orthogonally to the direction of movement of a document to be tested and one or more receiving antennas are arranged opposite each other in parallel to the emitting antennas and multiple emitting antennas parallel to the first transmitting antennas and multiple receiving antennas parallel to the first second transmitting antennas, where the second neighboring transmitting antennas and the corresponding receiving antennas are disposed displaced a defined distance, preferably the distance between a transmitting antenna and the corresponding receiving antenna and the shortest distance of a transmitting antenna to the receiving antenna corresp > 14.- Installation according to claim 13, characterized in that, multiple first and second emitting antennas, and multiple receiving antennas, First and second, they are arranged across the width of the step for the document in the machine for processing or handling of values 15. Installation according to claim 13 or 14, characterized in that the transmitting antennas and the receiving antennas are so arranged one next to the other, parallel and displaced in a plane, that a test of authenticity of switches can be performed in reference to the neutral position of two parallel edges of a document independently of the sides and edges. - Installation according to claim 13, characterized in that the second receiving antennas and the second emitting antennas are located after loops in parallel and / or in a row transverse to the transport direction with a distance such that each security feature to be tested size regardless of its placement in the document at least one of the second receiving antennas and a corresponding emitting antenna. 17. Installation according to claim 13, characterized in that the longest side of a transmitting antenna and the longer side of the corresponding receiving antenna corresponds to the width of a conductive mark of the security strip. 18. Installation according to claim 13, characterized in that, the adjustment and switching elements controlled by the service or the software, especially the microcontroller after the rectifier and the selective amplifier, are arranged in such a way that the output signals of the selective amplifier can be combined or linked logically. 19. Installation according to claim 13, characterized in that the adjustment or switching elements controlled by software service, especially the microcontroller after the rectifier and the selective amplifier are arranged in such a way that a switching between different types takes place, classes and degrees of use of the documents without variation of the arrangement of the sensors. 20. Installation according to claim 13, characterized in that the. shorter distance between two emitting antennas that are in a f jla is greater than the more-short distance 1, between two insulated but electrically conductive marks, which belong to the security thread and the switching elements are arranged in such a way , that the third antenna is used as an antenna of emission or reception, depending on the feeding or guidance of the document to be tested. 21. Installation according to claim 13, characterized in that the switching elements controlled manually and / or by the software are arranged in such a way that one or more transmitting antennas and the corresponding receiving antennas can be activated or deactivated at will. R E S U N E N The invention relates to a procedure and an installation testing or verification of security documents. The procedure for the proof of security documents seeks, with the use of Capacitive couplings, known per se, to transmit electrical signals from the emitting antennas to the receiving antennas through electrically conductive safety marks, and to amplify them, which are then evaluated in amplitude and course of time, and are compared with existing signal courses, when they are transformed into easily interpreted signals, which present easily comparable parameters. To obtain a specific definition of values, a selective amplifier is additionally coupled with the electronic evaluation system. A specific definition of values is then achieved by means of the evaluation electronics according to the invention, it being possible to determine a time limit for the amplitude of the signal tested by means of a controller, for example, this time will differ from the duration of the amplitude response for all other values, that is, the different bills.