CN104838427A - Preventing fraud - Google Patents

Preventing fraud Download PDF

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Publication number
CN104838427A
CN104838427A CN201380062395.1A CN201380062395A CN104838427A CN 104838427 A CN104838427 A CN 104838427A CN 201380062395 A CN201380062395 A CN 201380062395A CN 104838427 A CN104838427 A CN 104838427A
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CN
China
Prior art keywords
sensor
oscillation frequency
coin
antifraud
expection
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201380062395.1A
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Chinese (zh)
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CN104838427B (en
Inventor
A·哈德勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kerrii Payment Innovations Ltd
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Crane Payment Solutions Ltd
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Publication date
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Publication of CN104838427A publication Critical patent/CN104838427A/en
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Publication of CN104838427B publication Critical patent/CN104838427B/en
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Classifications

    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D5/00Testing specially adapted to determine the identity or genuineness of coins, e.g. for segregating coins which are unacceptable or alien to a currency
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F5/00Coin-actuated mechanisms; Interlocks
    • G07F5/24Coin-actuated mechanisms; Interlocks with change-giving
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D1/00Coin dispensers
    • G07D1/02Coin dispensers giving change
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D9/00Counting coins; Handling of coins not provided for in the other groups of this subclass
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07DHANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D9/00Counting coins; Handling of coins not provided for in the other groups of this subclass
    • G07D9/04Hand- or motor-driven devices for counting coins
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F1/00Coin inlet arrangements; Coins specially adapted to operate coin-freed mechanisms
    • G07F1/04Coin chutes
    • G07F1/041Coin chutes with means, other than for testing currency, for dealing with inserted foreign matter, e.g. "stuffing", "stringing" or "salting"
    • G07F1/042Coin chutes with means, other than for testing currency, for dealing with inserted foreign matter, e.g. "stuffing", "stringing" or "salting" the foreign matter being a long flexible member attached to a coin
    • G07F1/044Automatic detection of the flexible member
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07FCOIN-FREED OR LIKE APPARATUS
    • G07F9/00Details other than those peculiar to special kinds or types of apparatus
    • G07F9/04Means for returning surplus or unused coins

Abstract

A fraud prevention apparatus for a coin payout unit is presented comprising a sensor comprising an electrical oscillator for detecting coins in a coin outlet path; and one or more controllers configured to cause an expected change in the oscillating frequency of the sensor and to verify that the oscillating frequency has changed as expected.

Description

Prevent swindle
Technical field
The present invention relates to and attempt preventing swindle to the swindle of payment mechanism by detecting.Particularly but be not exhaustively, the present invention relates to and monitor that one or more coin sensor is to examine proper operation.
Background technology
When making payment mechanism pay the money that should pay more than it with attempting rogue, fraudster may attempt the coin sensor of hoodwinking in the coin exit of described payment mechanism, to prevent payment mechanism from registering the coin of distribution and therefore making payment mechanism continue coin to be discharged in coin exit.
Summary of the invention
According to the present invention, provide a kind of antifraud device for specie payment unit, comprising: the coin sensor with the electrical oscillation device for detecting the coin in coin exit path; And be configured to cause the expection in the oscillation frequency of described sensor to change and examine described oscillation frequency according at least one controller that expection changes.
The characteristic that controller can be configured to by changing the pierce circuit in sensor causes the expection in described oscillation frequency to change.
The arrangement of components that controller can be configured to by changing sensor causes the expection in oscillation frequency to change.
The arrangement of components changing described sensor can comprise the configuration of the one or more timing elements changed in described sensor.
The arrangement of components changing described sensor can comprise optionally adds at least one circuit unit to described sensor.
The arrangement of components changing described sensor can comprise and optionally being removed from described sensor by least one circuit unit.
The arrangement of components changing described sensor can comprise the operation of at least one circuit unit optionally changed in described sensor.
At least one circuit unit described can comprise capacitive component.
At least one circuit unit described can comprise resistor.
At least one circuit unit described can comprise inductive component.
At least one circuit unit described can have such as wider than the value in the predetermined wide marginal range of mean value.
Controller can be configured to actual oscillation frequency by determining described sensor and described actual oscillation frequency be compared with expection oscillation frequency examine described oscillation frequency and change according to expecting.
Controller can be configured to determine to expect oscillation frequency from the arrangement of components of described sensor.
Controller can be configured to measure described actual oscillation frequency from the output signal of described sensor.
Controller can be configured to by search and expect that the frequency profile changing the sensor of the measurement of mating is examined described oscillation frequency and changed according to expecting.
The expection that controller can be configured to determine oscillation frequency from the actual change of the arrangement of components of described sensor changes.
Controller can be configured in response to through scheduled time slot, scheduled event detected or occur the time-event of stochastic generation to cause the expection in oscillation frequency change and examine described oscillation frequency according to expection change.
If controller determines that described oscillation frequency does not change according to expection, then described controller can be configured to by causing the generation of alarm signal to respond.
Sensor can be configured to the object of the first position detected in the coin path of payment mechanism, and another sensor can be configured to the object of the second position detected in the coin path of payment mechanism; And at least one controller in one or more controller can be configured to the detection of primary importance and second position compare and examine whether the result compared is expect.
Another sensor can be optical sensor.
Another sensor can alternatively infrared ray sensor or UV sensor.
Result relatively can comprise the direction of object movement in coin path.
Result relatively can comprise the time interval between primary importance and the detection of second position.
Coin sensor can comprise the coin sensing element that electrical specification is affected by the field effect of the coin of process.
According to the present invention, provide a kind of specie payment unit comprising antifraud device.
According to the present invention, provide a kind of method detecting the swindle at specie payment unit place, comprising: cause the expection in the oscillation frequency of coin sensor to change for the coin in detection payment unit; And examine described oscillation frequency according to expection change.
The described method characteristic that can comprise by changing the pierce circuit in described sensor causes the expection in described oscillation frequency to change.
The described method arrangement of components that can comprise by changing described sensor causes the expection in oscillation frequency to change.
The arrangement of components changing described sensor can comprise the configuration of at least one timing component changed in described sensor.
The arrangement of components changing described sensor can comprise and optionally removed from described sensor by least one circuit unit or add to sensor.
The arrangement of components changing described sensor can comprise the operation of at least one circuit unit optionally changed in described sensor.
At least one circuit unit described can have wider than the value in the predetermined marginal range of mean value.
Described method can comprise the actual oscillation frequency by determining described sensor and described actual oscillation frequency be compared with expected frequence to be examined described oscillation frequency and changes according to expecting.
According to the present invention, provide a kind of method manufacturing multiple antifraud device, comprising: select the wide margining circuitry assembly used in described sensor, to make different sensors in different predeterminated frequency range oscillation.
Accompanying drawing explanation
Referring now to accompanying drawing only exemplarily object embodiments of the invention are described, wherein:
Fig. 1 is the schematic diagram of the Coin dispensing device comprising antifraud device;
Fig. 2 is the synoptic diagram of coin sensor circuit, and the expection oscillation frequency of coin sensor circuit can be changed the proper operation examining it.
Fig. 3 is the synoptic diagram of another coin sensor circuit, and the expection oscillation frequency of coin sensor circuit can be changed the proper operation examining it.
Fig. 4 is the synoptic diagram of another coin sensor circuit, and the expection oscillation frequency of coin sensor circuit can be changed the proper operation examining it.
Fig. 5 is the schematic diagram in the coin exit region of payment mechanism, and in coin exit region, optical sensor and osciducer are configured to the appearance detecting coin and other objects; And
Fig. 6 is the process flow diagram of the method that the swindle detected in currency payout devices is attacked.
Embodiment
The antifraud device 1 of currency payout devices 2 is below described.Antifraud device 1 is configured to execution and examines operation, described in examine the result instruction payment mechanism 2 whether proper operation of operation.Can indicate the maloperation of payment mechanism 2 and the swindle of payment mechanism 2 is attacked, just attempt making payment mechanism 2 pay the attack of the correct coin that it can not pay of operation if described attack is such as fraudster.
What performed by antifraud device 1 examines operation and can comprise and examine the proper operation of one or more sensor 3, and described one or more sensor 3 is configured to when coin is sensed coin through the coin exit 4 of payment mechanism 2 by during payment.With reference to figure 1, one or more sensor 3 can be arranged in coin exit path 5 or contiguous coin exit path 5, and described coin exit path 5 guides coin to be discharged into the coin exit 4 that coin can be made to be collected from the Coin storage device 6 of payment mechanism 2.The example of suitable Coin storage device is the Coined funnel 6 optionally with controlling, coin being distributed to coin exit 4 through coin exit path 5.In proper operation, sensor 3 is configured to the appearance of the detection coin when coin moves through sensor 3 in coin exit path 5 and is configured to generate the signal indicating described coin to be detected.By this way, Coin dispensing device 2 can will enter into the coin registration of coin exit 4 and count and therefore determine when to stop coin being distributed to coin exit path 5.
Antifraud device 1 by monitor the signal that generated by sensor 3 and check described signal be expection examine sensor 3 proper operation.If signal is not expection, antifraud device 1 can be configured to export alarm signal to indicate payment mechanism 2 decent under fire.The delivery operation that payment mechanism 1 can be configured to by closing it responds alarm signal.
Antifraud device 1 and the currency payout devices 2 comprising antifraud device 1 can operate under the control of Single Electron controller or multiple electronic controller, and each electronic controller controls the operation of these two devices.Such as, device 1,2 can be implemented as individual unit, and in described individual unit, one or more controller can be configured to all functions controlling payment mechanism 2, comprises those functions of antifraud device 1.
Alternatively, antifraud device 1 and currency payout devices 2 can only control respectively a device in two devices 1,2 operation special Single Electron controller control under operate.
Antifraud device 1 comprises the sensor 3a for detecting the coin in the coin exit path 5 of payment mechanism 2.Sensor 3a is included in the oscillator of the frequency place vibration of the characteristic depending on the coin sensing element 7 being couple to sensor 3a, such as electrical oscillation device circuit etc.Coin sensing element 7 has the electrical specification temporarily changed by the field effect of coin when coin moves along coin exit path 5, as detailed below.
Any suitable pierce circuit can be used.Example comprises the pierce circuit that wherein coin sensing element 7 is the electro-induction elements 7 in such as LC and RL pierce circuit.Electro-induction element 7 can comprise one or more electro-induction coil or other windings.
Another example is that wherein coin sensing element 7 is pierce circuits of the capacitive element 7 in such as RC pierce circuit.Capacitive element 7 can comprise one or more capacitor.
Fig. 2 to Fig. 4 shows the object lesson of sensor 3a.In these figures, sensor 3a comprises the LC relaxor that wherein coin sensing element 7 is inductive elements.
Oscillator can use anti-phase Schmidt trigger to implement, anti-phase Schmidt trigger or can comprise the discrete circuit assembly of multiple connection or comprises the integrated circuit (IC) shown in Fig. 2 to Fig. 4, described discrete circuit assembly such as comprises comparer (such as, comprising transistor) and multiple resistor.
Coin sensing element 7 is connected in an oscillator so that sensor 3a is depending on the electrical specification of sensing element 7 and the frequency place vibration changed with the electrical specification of sensing element 7.Such as, if sensing element 7 comprises the inductor 7 as shown in Fig. 2 to Fig. 4, then sensor 3a is configured to vibrate at the frequency place of the inductance depending on inductor 7.
As will be described below, antifraud device 1 is configured to such as have a mind to change the basic oscillation frequency of sensor 3a to make it possible to detect swindle attack by the arrangement of components changed in sensor 3a.
Referring to figs. 1 to Fig. 4, sensor 3a and the especially above-mentioned coin sensing element 7 mentioned are positioned near the coin exit path 5 of payment mechanism 2, make the electrical specification (such as inductance or electric capacity etc.) of coin to sensing element 7 along outlet pathway 5 to coin exit 4 movement produce detectable change.Therefore, when payment mechanism 2 distributes coin along outlet pathway 5, the galvanomagnetic effect that the oscillation frequency of sensor 3a moves through sensing element 7 in the mode relevant to the characteristic of coin by coin temporarily changes.
Sensor 3a is configured to generate proportional with its oscillation frequency and/or indicates its output signal of oscillation frequency.In the proper operation of sensor 3a, the output signal of sensor 3a should be supposed to the electrical specification reflecting sensing element 7 change and therefore reflect the appearance of coin in coin exit path 5.Such as, when coin in its path to coin exit 4 through sensing element 7 time, the spine of the change of the electrical specification of representation element 7 can be observed in the output signal of sensor 3a.
Output signal can comprise the output voltage signal of the sensor 3a as shown in Fig. 2 to Fig. 4 and therefore can vibrate at the same frequency place with sensor 3a.
Payment mechanism 2 can be configured to from the characteristic of the corresponding change of output signal, determine the value of coin and will enter into the coin counting of coin exit 4.Device 2 can determine when to have distributed the value of required coin thus and prevent it from oneself excessively paying.Such as, sensor 3a can be configured to the electronic controller output signal of sensor 3a being fed back to payment mechanism 2.Controller can be configured to such as by characteristics of signals being compared with the known coin characteristics in the storer being stored in device 2, analyzes described signal to determine when to distribute for specific payment the value of correct coin.In this case, controller can be configured to the port closing of the Coin storage device 6 making to provide in coin exit path 5 and prevent excessive payment thus.Device 2 can alternatively be configured to only examine has distributed the coin of desired number, instead of the value of the coin of also extra inspection distribution.This may need less circuit unit.
If sensor 3a maloperation, the coin of the output signal instruction coin fewer than truth or the value lower than truth that make to feed back to controller is distributed to coin exit 4, then controller can be misled into and leaves path 5 by being distributed to coin more than the coin needed and excessively standing the expense in the trial therefore counted in the right value of the coin by entering coin exit 4.Sensor 3a may an example of non-proper operation be if the waveform rogue ground that the outside of change that its has been hidden in output signal generates excessively drives, described output signal normal condition can be by coin it from Coin storage device 6 to the path of coin exit 4 through sensing element 7 time cause.Such as, sensor 3a may leave and not occur in path 5 that the frequency place of coin is overdriven being similar to instruction coin.Alternatively, foreign object can be inserted into coin exit path 5 by the outside from payment mechanism 2 and change by the electrical specification of sensing element 7.
In such cases, coin can not cause the corresponding impact in the output signal of sensor 3a through the sensing element 7 of sensor 3a on its path to coin exit 4, and is not therefore registered by controller and count.
Antifraud device 1 is configured to detect this fraud by examining sensor 3a proper operation.Such as, sensor 3a can be configured to the electronic controller 8 its output signal being fed to the antifraud device 1 shown in Fig. 1, and electronic controller 8 is configured to perform the sensor core practical operation relevant with sensor 3a and does.Controller 8 can comprise the one or more processors 9 being configured to perform and examining operation, and processor 9 operates under the control being such as included in the computer-readable instruction in the computer program code in the storer 10 being stored in antifraud device 1 or in the other places of payment mechanism 2.
The operation of examining of sensor 3a comprises and causes change in the expection oscillation frequency of sensor 3a and check that oscillation frequency changes according to expection subsequently.Change in the expection oscillation frequency of sensor 3a can be caused by the arrangement of components changing oscillator.Such as, as will be described in more detail, the arrangement of components changing oscillator can comprise such as by one or more circuit unit being accessed pierce circuit or revising one or more circuit unit, to change circuit characteristic from pierce circuit disconnection etc.The assembly that is modified (such as place in circuit and/or disconnect from circuit) can be the timing component (such as capacitor and/or resistor etc.) of oscillator or the assembly of phase inverter, as described below.
Comprise referring to figs. 2 and 3, example and the electric capacity of the LC relaxation oscillator circuit in sensor 3a is changed known amount, and the oscillation frequency examining sensor 3a subsequently is followed the known change of electric capacity as expected and changed.Electric capacity can by substituting, adding and/or removing capacitive component to change to pierce circuit or from pierce circuit.In order to be conducive to this, sensor 3a optionally can be couple to multiple capacitors 11 that can optionally be accessed LC relaxation oscillating circuit by controller and be disconnected from LC relaxation oscillator circuit.
More specifically, multiple capacitor 11 can be couple to LC relaxation oscillating circuit through one or more electronic switch 12 (such as one or more transistor 12a, 12b etc.), and described electronic switch 12 can operate optionally each capacitor 11 is accessed pierce circuit by controller 8 or disconnect the electric capacity to change it from pierce circuit.Fig. 2 shows that multiple switch 12 (each switch comprises transistor 12a, 12b) is each to be configured under the control of the controller 8 optionally by the one or more capacitors of multiple capacitor 11 access LC pierce circuit or the example that disconnects from LC pierce circuit.
Controller 8 opens and closes switch 12 by providing to the control signal of switch 12.Such as, how Fig. 2 can be couple to the controller 8 of antifraud device 1 through suitable communicative couplings independently if showing above-mentioned each transistor 12a, 12b mentioned, make controller 8 apply the control signal of such as suitable voltage signal etc., independently each capacitor 11 accessed pierce circuit to make transistor 12a, 12b or disconnect from pierce circuit.
Be appreciated that in the alternate embodiments of oscillator, timing component instead of capacitor 11 can optionally be accessed pierce circuit as above-mentioned same mode or be disconnected from pierce circuit, cause the change in the expection oscillation frequency of sensor 3a.Such as, if use RL or RC oscillator, then the resistive device of such as resistor etc. can optionally be accessed oscillator under the control of the controller 8 or be disconnected from oscillator.
Extraly or alternatively, the change in the expection oscillation frequency of sensor 3a can be caused by the arrangement of components of the phase inverter changing sensor.Such as, with reference to figure 4, one or more discrete circuit assemblies of such as one or more resistors etc. can be access in phase inverter or disconnect to change the switching threshold of phase inverter and to change the oscillation frequency of sensor 3a thus from phase inverter.
Extraly or alternatively, the change in the expection oscillation frequency of sensor 3a can cause by extra coin sensing element 7 being accessed pierce circuit or disconnecting from pierce circuit.Such as, circuit can comprise multiple inductive or the capacitive element 7 of connected in series or parallel join, and element 7 can individually or jointly by optionally place in circuit or disconnect from circuit with the oscillation frequency changing sensor 3a.
With reference to figure 3 and Fig. 4, as to shown in Fig. 2 with the substituting of the use switch 12 of above-mentioned discussion, circuit unit can access pierce circuit by the control voltage signal being applied directly to assembly from controller 8 and disconnect from pierce circuit.This can reduce the component count needed for pierce circuit.
Controller 8 can be configured to such as by changing the arrangement of components of oscillator in a kind of mode in above-mentioned various ways, in response to the expection fundamental frequency changing oscillator through preset period of time.Controller 8 can be configured to the new arrangement of components of stochastic generation, makes new expection oscillation frequency also be stochastic generation.Controller 8 can extraly or alternatively with the time of stochastic generation or the expection fundamental frequency changing oscillator in response to particular event.Such as, controller 8 can be configured to the configuration changing oscillator at regular time intervals (such as every 10 milliseconds), to change the expection oscillation frequency of sensor 3a.Be appreciated that and can use arbitrary default millisecond number.Extraly or alternatively, controller 8 can be configured to handle other consistent similar incidents in response to relative long periods after coin being detected from sensor 3a last time or in response to being swindled with sensor 3a, changes the expection fundamental frequency of oscillator.It is the arrangement of components that oscillator stochastic generation is new immediately that controller 8 can be configured to causing before new configuration transformation.
The definite arrangement of components of oscillator is always known to controller 8, and therefore controller 8 always can be determined the expection oscillation frequency of sensor 3a and expection oscillation frequency be compared to examine proper operation with the oscillation frequency of measurement.Controller 8 is by the other places of configuration store in the storer 10 of antifraud device 1 or in payment mechanism 2.
As mentioned above, changed the configuration of sensor 3a to expect change in its oscillation frequency, the oscillation frequency that the controller 8 of antifraud device 1 is configured to examine sensor 3a changes according to expection.Controller 8 can be configured to along with the change in sensor configuration is examined to carry out these with identical regular intervals of time.
Controller 8 can be configured to carry out to frequency the new expection oscillation frequency that mathematical computations predicts sensor 3a by the known tip assemblies configuration based on oscillator.Such as, if use LC relaxor, controller 8 is configured to by carrying out to frequency the new expection oscillation frequency that mathematical computations predicts inductive sensor 3a based on other known parameters (comprising those parameters of inductive sensing element 7) of the known capacitance of LC relaxor in its new configuration and pierce circuit.Subsequently, whether the actual oscillation frequency that controller 8 can be configured to survey sensor 3a drops in the predetermined allowance of predict frequency with the frequency of check measurement.Make arrangement of components that oscillator is new to another and therefore new to another expection oscillation frequency carries out frequency measurement before changing at controller, now can repeat verification process.Predetermined allowance (being and then called as predetermined tolerance interval below) can by with prediction and/or the error margin of frequency association measured take into account, or representative and predict and/or the error margin of frequency association measured.
If the prediction of sensor 3a with the operating frequency of reality all in predetermined tolerance interval, then controller 8 can be configured to examine sensor into proper operation for certain.On the contrary, if prediction with the operating frequency of reality not in predetermined tolerance interval, then sensor cannot be examined as proper operation by controller 8, or can affirm the non-proper operation of sensor, causes thus and generates aforementioned alarm signal.
Manufacture multiple antifraud device 1 and can comprise the value changing the assembly sensor 3a from a device 1 to next device 1, to guarantee that the sensor 3a of different device 1 does not vibrate on identical fundamental frequency.Such as, the value (electric capacity etc. of the resistance of such as independent resistor or the independent capacitor 11 shown in Fig. 2 and Fig. 3) of the timing component in pierce circuit can change between next device 1 at a device 1.Alternatively, the value of the discrete assembly in phase inverter can change between a device 1 to next device.This behavior ensure that the various possible oscillator configuration of each sensor 3a and oscillation frequency are therefore different, and the marked change between the device 1 therefore causing multiple manufacture.Result is exactly do not have predetermined oscillation frequency, the now all the sensors 3a proper operation that associates of known and multiple antifraud device, and therefore can successfully excessively drive as described above fraudster or handle in the unlikely event of particular sensor 3a to rogue in addition, due to the difference of the operating frequency between sensor 3a, fraudster can not handle another sensor 3a in rogue ground in the same manner.
Can pass through to select assembly for specific device 1 from the one or more ponds be made up of the assembly with a large amount of different setting (such as electric capacity or resistance) from a device 1 to the change of the components values (such as capacitor value or resistor values etc.) of next device 1, and/or by using the assembly with tolerant limit.
The replacement scheme of arrangement of components changing pierce circuit is that controller 8 cuts off the power supply of oscillator and the output signal examining sensor 3a reflects according to expection.If output signal does not change as expected, controller 8 is configured to warn the swindle to device 2 to attack as previously mentioned.
Fig. 5 shows the example location of the optical sensor 3b being used from the coin detected in the coin exit path 5 of payment mechanism 2 with above-mentioned osciducer 3a mono-.Optical sensor 3b comprises one or more optical transmitting sets 13 (such as one or more LED 13 etc.) and one or more photodetector 14 (such as one or more phototransistors 14 etc.).Optical transmitting set 13 is configured to utilizing emitted light on the direction of photodetector 14, detects launched light when not blocking with the optical path between convenient transmitter 13 and detecting device 14 by detecting device 14.
One or more optical transmitting set 13 and one or more detecting device 14 are positioned near coin exit path 5, cause coin to advance through coin exit path 5 arrive coin exit 4 to block the optical path between one or more transmitter 13 and one or more detecting device 14 in described position.Such as, transmitter 13 can be positioned on the opposite side of coin exit path 5 or coin exit 4 to the corresponding detecting device 14 in the optical path of transmitter 13.
Optical sensor 3b is couple to the controller 8 of antifraud device 1 communicatedly and controller 8 is configured to monitor the state of optical sensor 3b, to detect coin being distributed to coin exit 4 from coin storage 6.More specifically, whether the output signal of optical sensor 3b indicates the optical path between above-mentioned one or more transmitters 13 of mentioning and one or more detecting device 14 to block to controller 8.The time that the output signal of optical sensor 3b also indicates the optical path of optical sensor 3b to get clogged.Such as, described output signal can indicate the obstruction of the optical path of optical sensor 3b or the start time of interruption and end time, and the duration that instruction optical path gets clogged.Similar instruction is also present in the output signal of above-described osciducer 3a.
Osciducer 3a physically can be separated in coin exit path 5 with preset distance with optical sensor 3b, is first detected by osciducer 3a so that coin moves to coin exit 4 along coin exit path 5 and is detected by optical sensor 3b subsequently.To be appreciated that sensor 3a, 3b can alternatively place so that first coin is detected by optical sensor 3b and detected by osciducer 3a subsequently.
The order that sensor 3a, 3b detect coin allows antifraud device 1 to determine the direction of coin along coin exit path 5 movement.Such as, if first detects by making from coin exit 4 sensor 3a farthest and second detecting and make by from the sensor 3b close to coin exit 4 subsequently, then controller 8 can determine that storing 6 according to expection from coin by the distribution object of coin moves to coin exit 4.The order detected also allows device 1 determine the direction of foreign object (such as inductive swindle sensor maneuvering device etc.) movement in coin path 5 and therefore identify that potential swindle is attacked by identification unexpected event.
If the order indicated by sensor 3a, 3b is not expection, such as because indicate from the sensor 3b close to coin exit 4 prior to object being detected from the sensor 3a away from coin exit 4 comparison of sensor output signal, then controller 8 can determine that object is inserted into coin exit path 5 from the outside of payment mechanism 2.Thisly determine it is the instruction that swindle is attacked, and controller 8 can be made to generate aforementioned alarm signal, it is such as insert equipment to handle the trial etc. of the oscillation frequency of osciducer 3a as described above that described swindle is attacked.
Except denoted object (such as coin) is except the direction of coin exit path 5 movement, determined to the controller 8 that more also allows of sensor output signal the time interval that object is detected by sensor 3a, 3b.The time interval that controller 8 can be configured to these to measure compared with those time intervals desired in the normal running of payment mechanism 2.Such as, controller 8 can be configured to object compare through time interval of the measurement of optical sensor 3b and interval expeced time be stored in the storer of antifraud device 1 first through osciducer 3a and subsequently.Expeced time, interval can be derived from the goal pace of coin normal operating condition in coin exit 5 and the known distance between sensor 3a, 3b.Extraly or alternatively, expeced time, interval can based on the allocating and measuring result made during manufacturing installation 2.
Non-close match store in memory expeced time interval time interval of measurement be instruction that the swindle of payment mechanism 2 is attacked and controller 8 can be made to generate aforementioned alarm signal.
The method of swindling that prevents according to above-mentioned device and operation is described about Fig. 6 below.
In first step S1, the controller 8 of antifraud device 1 is configured to detect the operating frequency of instruction osciducer 3a should reformed trigger event.Trigger event can be from last course of event scheduled time slot, or detects or occurred foregoing particular event.In the second step S2 of method, controller 8 is configured to the change such as caused by the configuration changing pierce circuit in the operating frequency of sensor 3a.In the third step S3 of method, the controller 8 of antifraud device 1 is configured to check whether the operating frequency of sensor 3a changes according to expection, and if do not change according to expection, then can be configured to the generation causing swindle alarm signal.
In the fourth step s 4, in response to by be separated place coin sensor 3a, 3b in one or both are to the detection of the object in coin exit path 5, controller 8 is configured to by determining that object is determined the direction of object along outlet pathway 5 movement by the order that sensor 3a, 3b detect.If direct of travel is not expection, then controller 8 can be configured to the generation causing swindle alarm signal.
At the 5th step S5 of method, controller 8 be configured to determine object detected by coin sensor 3a, 3b independently between time interval of measurement whether be as coin stores desired by 6 distributions from coin under normal operation.If the time interval is not expect, then controller 8 can be configured to the generation causing swindle alarm signal.
Be appreciated that when not deviating from the scope of claims, can to making various amendment with above-mentioned embodiment shown in figure.Such as, although the oscillator shown in figure is frequency modulation (FM) oscillator, osciducer 3a alternatively can comprise FM and amplitude modulation (AM) sensor as extra safe floor.In this embodiment, the AM signal of demodulation can provide to controller 8 simulating signal being responsible for the change caused in the expection oscillation frequency of sensor 3a.Controller 8 can be configured to by sensor 3a determine FM and AM signal export in change and examine described change (such as from default value) only in one direction until receive peak signal, then in the opposite direction change (such as turning back to default value).When coin is positioned at coin sensing element 7 center or contiguous coin sensing element 7 center, in output signal, peak value can be there is.The change located in the unexpected time in sense may indicate swindle to attack, and described change is such as not in response to the change etc. that depart from of peak signal from default value.
The amplitude that controller 8 can also be configured to determine that peak signal departs from and examine described amplitude and drop in the expection restriction that can be stored in storer 10.
High-Q circuit design guarantee in AM signal, have relatively large change to the little change in the oscillation frequency of sensor 3a, and therefore implement when possible fraudster carry out swindle attack time its must attempt manipulation additional variable.This design also can provide high level change for the relatively little change in components values to the operation of sensor 3a (such as, frequency) characteristic, because this increasing the complexity and difficulty of successfully handling multiple sensor 3a in the same manner.
To be appreciated that above-described embodiment and replacement scheme can use either individually or in combination.It is also understood that, the replacement scheme of not explicit discussion above also within the scope of the invention.Such as, as concise and to the point description, although relate generally to LC oscillator above to describe pierce circuit, the oscillator of other types also alternatively can be used.By to change the arrangement of components of oscillator with mode like LC example class, the oscillation frequency of this alternative oscillator can be changed.Substituting the concrete example of oscillator is RL or RC oscillator, and wherein the resistance value of circuit changes the change that causes in the oscillation frequency of sensor 3a under the control of the controller 8.The resistive device of such as one or more resistors etc. with the mode place in circuit similar with capacitive component and can disconnect from circuit, to change oscillation frequency.Particularly, examining operation and can comprise and the resistance of RL or the RC oscillator in sensor 3a changed known amount and the oscillation frequency examining sensor 3a subsequently has been followed the known change of resistance as expected and changed to osciducer 3a.Resistance can by substituting, adding and/or removing resistive device to change to pierce circuit or from pierce circuit.In order to be conducive to this, sensor 3a can optionally be couple to can by controller 8 optionally access oscillator and from oscillator disconnect multiple resistors, described optionally access and disconnect be such as use foregoing one or more switch 12 or by from controller 8 to assembly apply control signal realize.
It is also understood that, the concrete assembly shown in Fig. 2 to Fig. 4 and components values can replace by the assembly substituted and components values, to realize the same effect of circuit as shown.
In addition, as as above, assembly is accessed oscillator or the replacement scheme from oscillator disconnection, controller 8 can be configured to the value of the variable component (such as one or more variohms etc.) adjusted in oscillator to change the oscillation frequency of sensor 3a.

Claims (33)

1., for an antifraud device for specie payment unit, comprising:
Comprise the coin sensor of the electrical oscillation device for detecting the coin in coin exit path; And
Be configured to cause the expection in the oscillation frequency of described sensor to change and examine described oscillation frequency according at least one controller that expection changes.
2. antifraud device according to claim 1, its middle controller characteristic be configured to by changing the pierce circuit in described sensor causes the expection in described oscillation frequency to change.
3. antifraud device according to claim 1 and 2, its middle controller arrangement of components be configured to by changing described sensor causes the expection in oscillation frequency to change.
4. antifraud device according to claim 3, wherein changes the configuration that described arrangement of components comprises the one or more timing elements changed in described sensor.
5. the antifraud device according to claim 3 or 4, the arrangement of components wherein changing described sensor comprises optionally adds at least one circuit unit to described sensor.
6. the antifraud device according to claim 3,4 or 5, the arrangement of components wherein changing described sensor comprises and optionally being removed from described sensor by least one circuit unit.
7., according to the antifraud device in claim 3 to 6 described in any one claim, the arrangement of components wherein changing described sensor comprises the operation of at least one circuit unit optionally changed in described sensor.
8., according to the antifraud device in claim 5 to 7 described in any one claim, at least one circuit unit wherein said comprises capacitive component.
9., according to the antifraud device in claim 5 to 8 described in any one claim, at least one circuit unit wherein said comprises resistor.
10., according to the antifraud device in claim 5 to 9 described in any one claim, at least one circuit unit wherein said comprises inductive component.
11. according to the antifraud device in claim 5 to 10 described in any one claim, and at least one circuit unit wherein said has such as wider than the value in the predetermined wide marginal range of mean value.
12. antifraud devices according to any one aforementioned claim, its middle controller is configured to the actual oscillation frequency by determining described sensor and described actual oscillation frequency is compared with expection oscillation frequency examine described oscillation frequency and change according to expecting.
13. antifraud devices according to claim 12, its middle controller is configured to determine described expection oscillation frequency from the arrangement of components of described sensor.
14. antifraud devices according to claim 12 or 13, its middle controller is configured to measure described actual oscillation frequency from the output signal of described sensor.
15. according to the antifraud device in claim 12 to 14 described in any one claim, its middle controller is configured to by search and expects that the frequency profile changing the sensor of the measurement of mating is examined described oscillation frequency and changed according to expecting.
16. antifraud devices according to any one aforementioned claim, the expection that its middle controller is configured to determine oscillation frequency from the actual change of the arrangement of components of described sensor changes.
17. antifraud devices according to any one aforementioned claim, its middle controller be configured in response to through scheduled time slot, scheduled event detected or occur that the time-event of stochastic generation changes according to expection to cause the expection in oscillation frequency to change and to examine described oscillation frequency.
18. antifraud devices according to any one aforementioned claim, if wherein controller determines that described oscillation frequency does not change according to expection, then described controller is configured to by causing the generation of alarm signal to respond.
19. antifraud devices according to any one aforementioned claim, wherein:
Sensor is configured to the object of the first position detected in the coin path of payment mechanism;
Another sensor is configured to the object of the second position detected in the coin path of payment mechanism; And
At least one controller in one or more controller is configured to the detection of primary importance and second position compare and examine whether the result compared is expect.
20. antifraud devices according to claim 19, wherein another sensor is optical sensor.
21. antifraud devices according to claim 19 or 20, the result wherein compared comprises the direction of object movement in coin path.
22. according to the antifraud device in claim 19 to 21 described in any one claim, and the result wherein compared comprises the time interval between primary importance and the detection of second position.
23. antifraud devices according to any one aforementioned claim, wherein coin sensor comprises the coin sensing element that electrical specification is affected by the field effect of the coin of process.
24. 1 kinds of specie payment unit, comprise according to the antifraud device described in any one aforementioned claim.
25. 1 kinds of methods detecting the swindle at specie payment unit place, comprising:
The expection in the oscillation frequency of coin sensor is caused to change for the coin in detection payment unit; And
Examine described oscillation frequency to change according to expection.
26. methods according to claim 25, the characteristic comprised by changing the pierce circuit in described sensor causes the expection in described oscillation frequency to change.
27. methods according to claim 25 or 26, the arrangement of components comprised by changing described sensor causes the expection in oscillation frequency to change.
28. methods according to claim 27, wherein change the configuration that described arrangement of components comprises at least one timing component changed in described sensor.
29. methods according to claim 27 or 28, the arrangement of components wherein changing described sensor comprises and is optionally removed from described sensor by least one circuit unit or add to described sensor.
30. according to the method in claim 27 to 29 described in any one claim, and the arrangement of components wherein changing described sensor comprises the operation of at least one circuit unit optionally changed in described sensor.
31. methods according to claim 29 or 30, at least one circuit unit wherein said has wider than the value in the predetermined marginal range of mean value.
32. according to the method in claim 25 to 31 described in any one claim, comprises the actual oscillation frequency by determining described sensor and described actual oscillation frequency compared with expected frequence examining described oscillation frequency and changing according to expecting.
33. 1 kinds of methods manufactured according to the multiple antifraud devices in claim 1 to 23 described in any one claim, comprising: select the wide margining circuitry assembly used in described sensor, to make different sensors in different predeterminated frequency range oscillation.
CN201380062395.1A 2012-11-29 2013-11-22 Prevent fraud Active CN104838427B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1221504.2A GB2508377A (en) 2012-11-29 2012-11-29 Preventing fraud in a coin payout mechanism
GB1221504.2 2012-11-29
PCT/GB2013/053080 WO2014083319A1 (en) 2012-11-29 2013-11-22 Preventing fraud

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JP2016502197A (en) 2016-01-21
GB2508377A (en) 2014-06-04
CN104838427B (en) 2017-07-28
JP6377627B2 (en) 2018-08-22
AU2013350949A1 (en) 2015-04-09
EP2926322A1 (en) 2015-10-07
AU2013350949B2 (en) 2017-09-07

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Address after: Alder M Lan Cashire, England

Patentee after: Kerrii payment Innovations Ltd

Address before: Alder M Lan Cashire, England

Patentee before: Crane pays solution company limited