WO2017145513A1 - Dispositif de détection de support et dispositif de traitement de support - Google Patents

Dispositif de détection de support et dispositif de traitement de support Download PDF

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Publication number
WO2017145513A1
WO2017145513A1 PCT/JP2016/088510 JP2016088510W WO2017145513A1 WO 2017145513 A1 WO2017145513 A1 WO 2017145513A1 JP 2016088510 W JP2016088510 W JP 2016088510W WO 2017145513 A1 WO2017145513 A1 WO 2017145513A1
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WO
WIPO (PCT)
Prior art keywords
medium
detection
unit
signal
transport
Prior art date
Application number
PCT/JP2016/088510
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English (en)
Japanese (ja)
Inventor
浩伸 畑本
清水　聡
城田　健一
雄一 吉田
Original Assignee
沖電気工業株式会社
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Publication of WO2017145513A1 publication Critical patent/WO2017145513A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/12—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to double feed or separation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G01B15/02—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/02—Testing electrical properties of the materials thereof
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation

Definitions

  • the present disclosure relates to a medium detection device and a medium processing device.
  • the medium detection device and the medium processing device of the present disclosure are applied to, for example, a banknote dispensing machine that performs a transaction of dispensing a banknote as a medium according to a customer operation.
  • banknote dispensing machines As banknote dispensing machines (CD: Cash Dispenser) used in financial institutions, banknote dispensing machines that dispense banknotes in response to requests from users who are financial institution customers are widely used. .
  • a control unit that controls the whole, a banknote storage that stores banknotes, a transport unit that transports banknotes, a discrimination unit that discriminates banknotes, and a reject storage that stores banknotes that have been identified as being unable to withdraw money.
  • a banknote dispensing machine having a stacking unit that stacks banknotes identified as being able to be withdrawn, and a withdrawal port that delivers the accumulated banknotes to a user has been proposed.
  • a conveyance state of the banknote conveyed it is the single feed by which the banknote is isolate
  • the control unit can withdraw a number of banknotes that exactly matches the requested amount by making it possible to withdraw a single-sent banknote and not being able to withdraw a multi-feed banknote.
  • a discrimination unit for example, a discrimination unit that detects the conveyance state of banknotes using ultrasonic waves has been proposed.
  • ultrasonic transmitters and receivers are respectively arranged at locations facing each other across the banknote conveyance path by the conveyance unit, and based on the reception result of the ultrasonic wave passing through the banknote to be conveyed, It is possible to detect whether the banknote is single-feed or multi-feed (for example, see Japanese Patent Application Laid-Open No. 2008-207885).
  • the present disclosure has been made in consideration of the above, and an object thereof is to propose a medium detection device and a medium processing device that can detect a conveyance state of a medium in a non-contact manner and can be configured in a small size.
  • a medium detection device includes a conveyance path through which a sheet-like medium is conveyed, a conveyance guide that forms a conveyance path and guides the sheet along the paper surface, and a part of the conveyance guide.
  • a substrate installation guide provided with an antenna that faces the first surface side of the medium to be transported and radiates a predetermined electromagnetic wave to the medium, and a second part of the transported medium that is a part of the transport guide.
  • a conductor guide that opposes the surface side and forms electromagnetic coupling with the antenna by electromagnetic waves radiated from the antenna, and a discriminating section that discriminates the transport state of the medium passing between the substrate installation guide and the conductor guide And including.
  • the state of the electromagnetic coupling can be changed by transporting the medium into the transport path in a state where the electromagnetic coupling is formed between the antenna and the conductor positioned with the transport path interposed therebetween.
  • the degree of change in the state of electromagnetic coupling is different according to the conveyance state of the medium, i.e., the difference between single feeding or double feeding, and the degree of change in the detected state of electromagnetic coupling is also different.
  • the determination unit By detecting the degree of this change by the determination unit, it is possible to accurately determine the conveyance state of the medium.
  • the structure since a part of the conveyance guide is formed of a conductor such as a metal plate on the opposite side of the antenna across the conveyance path, the structure can be simplified and the apparatus configuration can be reduced in size.
  • the medium detection device of the present disclosure includes a conveyance unit that conveys a sheet-like medium in the conveyance direction along the conveyance path, a high-frequency signal generation unit that generates a high-frequency signal having a predetermined conveyance frequency, and a high-frequency signal generation unit Receiving a high-frequency signal from the first terminal and outputting a part of the high-frequency signal as a first output signal from the first terminal, and another part of the high-frequency signal as a second output signal from the second terminal.
  • An output signal input / output unit an antenna having characteristics corresponding to the carrier frequency, and radiating an electromagnetic wave based on the first output signal toward the carrier path; and a conductive antenna sandwiching the carrier path; A conductor which is disposed at an opposing position and forms electromagnetic coupling with the antenna by electromagnetic waves radiated from the antenna; and a detection unit which generates a detection signal representing the magnitude of power in the second output signal; ,Ann Between the burner and the conductor on the basis of the detection signal when the medium passes, including a discrimination section for discriminating the conveying state of the medium.
  • the medium processing apparatus of the present disclosure discriminates a medium storage that stores a sheet-like medium, a transport unit that transports a medium fed out from the medium storage, and a transport state of the medium transported by the transport unit.
  • a discriminating unit a stacking unit that stacks media that are identified as deliverable based on the transport state, a reject storage that stores media that are discriminated as undeliverable by the discrimination unit, and a medium that is stacked by the stacking unit.
  • a delivery unit that delivers to the user, and the discrimination unit includes a discrimination transport unit that transports the medium in the transport direction along the transport path, a high-frequency signal generation unit that generates a high-frequency signal having a predetermined transport frequency, and a high-frequency signal
  • a high frequency signal is input from the signal generation unit, a part of the high frequency signal is output from the first terminal as a first output signal, and the other part of the high frequency signal is output from the second terminal to the second output.
  • a signal input / output unit that has a characteristic corresponding to the carrier frequency, an antenna that radiates an electromagnetic wave based on the first output signal toward the carrier path, and that is electrically conductive and faces the antenna across the carrier path
  • a conductor that is disposed at a position to form electromagnetic coupling with the antenna by electromagnetic waves radiated from the antenna, and a detection unit that generates a detection signal representing the magnitude of power in the second output signal, And a discriminator that discriminates the conveyance state of the medium based on a detection signal when the medium passes between the antenna and the conductor.
  • the state of the electromagnetic coupling in a state in which electromagnetic coupling is formed between the antenna and the conductor located across the conveyance path, the state of the electromagnetic coupling is changed by conveying the medium into the conveyance path, and accordingly The power at the second signal output can be varied.
  • the degree of changing the state of electromagnetic coupling differs depending on the conveyance state of the medium, that is, the difference between single feeding and double feeding, and the degree of change in power in the second signal output also differs. Therefore, according to the present disclosure, it is possible to accurately determine the conveyance state of the medium by performing a comparison process or the like with respect to a predetermined threshold value based on the detection signal indicating the magnitude of the power in the second signal.
  • a conductor such as a metal plate is disposed on the opposite side of the antenna across the conveyance path, the device configuration can be reduced in size.
  • a medium detection device and a medium processing device that can detect a conveyance state of a medium in a non-contact manner and can be configured in a small size.
  • a banknote dispenser 1 as a medium processing apparatus is installed in, for example, a financial institution or various commercial facilities, and is used by a user (ie, a customer of a financial institution or a commercial facility). In response to the operation, the banknote as a medium is withdrawn.
  • the banknote dispensing machine 1 includes a lower storage unit 2, an upper bundle transport unit 3, and a control unit 4 that controls the whole.
  • the control unit 4 includes a CPU (Central Processing Unit), and performs processing such as withdrawal processing by reading and executing a predetermined program from a ROM (Read Only Memory), a flash memory, or the like.
  • the control unit 4 includes a storage unit such as a RAM (Random Access Memory), a hard disk drive, and a flash memory, and stores various information in the storage unit.
  • the side of the banknote dispenser 1 facing the customer is the front side, the opposite is the rear side, the left and right are the left side and the right side as viewed from the customer facing the front side, and the upper side and the lower side. Is defined and explained.
  • a plurality of parts for performing various processes relating to banknotes are incorporated in a rectangular parallelepiped storage housing 10.
  • the housing case 10 four banknote cassettes 11, a transport unit 13, a discrimination unit 14, a switching unit 15 and a stacking unit 16, and a reject storage 17 are provided.
  • Each banknote cassette 11 as a medium storage is configured in a rectangular parallelepiped shape that is long in the front-rear direction, and stores a banknote of a predetermined denomination therein. Moreover, the banknote cassette 11 has a payout opening on the rear side for paying out banknotes one by one and delivering them to the transport unit 13.
  • the conveyance part 13 comprises the conveyance path which is a path
  • the discrimination unit 14 as the medium detection device is in a single-feed state separated one by one as a discrimination process with respect to the banknotes being conveyed, and can be withdrawn, or two or more banknotes overlapped. It is discriminated whether it is in the double feed state and the withdrawal is impossible, and the discrimination result obtained at this time is supplied to the control unit 4.
  • the control part 4 determines the conveyance destination of each banknote based on the discrimination result supplied from the discrimination part 14. Based on the control of the control unit 4, the switching unit 15 switches the bill conveyance path by changing the inclination angle of a blade (indicated by a triangle in the drawing) that changes the traveling direction by contacting the bill.
  • the stacking unit 16 is arranged on the rear side of the switching unit 15, and the banknotes conveyed from the switching unit 15, that is, the banknotes determined to be able to be withdrawn by the control unit 4 based on the discrimination result by the discrimination unit 14. Are discharged into the accumulation space 16S and accumulated in a bundle on the stage 16T. For this reason, in the following, the banknotes stacked in this way are also referred to as banknote bundles W.
  • the reject storage 17 is disposed on the front side of the switching unit 15, and the banknote conveyed from the switching unit 15, that is, the banknote determined by the control unit 4 to be unable to withdraw money (hereinafter also referred to as a reject banknote). ) Or the banknote bundle W falling from the upper bundle conveying unit 3 through the upper intake hole 17H is stored.
  • the bundle conveyance unit 3 is formed in a flat rectangular parallelepiped shape that is short in the vertical direction and long in the front-rear direction as a whole, and the length in the front-rear direction is longer than that of the storage unit 2.
  • a bundle conveyance path 3 ⁇ / b> Y that is a path through which the banknote bundle W passes when the banknote bundle W is conveyed is formed by various members incorporated in the rectangular parallelepiped bundle conveyance housing 20.
  • a withdrawal port 26 is formed at the front end of the bundle transport housing 20, that is, the front end of the bundle transport path 3Y, as a delivery unit that delivers the banknote bundle W to the user.
  • An upper conveyance belt 21 that is an endless belt is provided on the upper portion in the bundle conveyance housing 20.
  • a plate-shaped sandwiching conveyance guide 22 that is thin in the vertical direction and a lower conveyance belt 24 that is an endless belt are provided in the lower part of the upper conveyance belt 21 in the bundle conveyance housing 20.
  • the nipping / conveying guide 22 is moved in the front-rear direction by a moving mechanism, thereby opening either the collecting hole 16H or the intake hole 17H to communicate with the bundle conveying path 3Y.
  • the stage 16T of the stacking unit 16 is moved upward in a state in which the nipping / conveying guide 22 is moved forward, so that the height of the upper surface thereof is substantially equal to that of the nipping / conveying guide 22 and the one of the bundle conveying path 3Y.
  • the russell portion 25 moves in the front-rear direction by pushing the banknote bundle W along the upper surfaces of the nipping and conveying guide 22, the lower conveying belt 24, and the stage 16T.
  • each banknote cassette 11 pays out the denomination and the number of banknotes according to the amount of money to be dispensed one by one from the rear surface, and delivers them to the transport unit 13.
  • the conveyance part 13 conveys each banknote upward, makes the discrimination part 14 discriminate
  • the banknote dispensing machine 1 when the banknote dispensing machine 1 accumulates the denomination and the number of banknotes corresponding to the withdrawal amount, that is, the banknote bundle W on the stage 16T, the stage 16T is raised, and the banknote bundle W is placed in the bundle transport path 3Y. Lift up. Subsequently, the banknote dispenser 1 moves the banknote bundle W forward along the bundle transport path 3Y by causing the upper transport belt 21 and the lower transport belt 24 to travel forward and moving the raschel portion 25 forward. Then, it is conveyed to the withdrawal port 26. The bill dispensing machine 1 ends the dispensing operation at this stage, and allows the user to receive the bill bundle W.
  • the banknote dispensing machine 1 determines that the user has forgotten to remove the banknote bundle W and starts the taking-in operation. . Specifically, the banknote dispenser 1 takes the banknote bundle W into the bundle transport path 3Y by causing the upper transport belt 21 and the lower transport belt 24 to travel rearward, and further causes the raschel portion 25 to travel rearward. The banknote bundle W is advanced backward along the bundle conveyance path 3Y. Eventually, when the banknote bundle W reaches the upper side of the intake hole 17H, the banknote dispenser 1 drops the banknote bundle W from the bundle transport path 3Y and stores it in the reject storage box 17.
  • the discrimination part 14 is demonstrated. As shown in a schematic plan view or cross-sectional view in FIG. 2, the discrimination unit 14 is attached to the front side (that is, the inside) of the storage housing rear surface portion 10 ⁇ / b> B constituting the rear surface portion of the storage housing 10 (FIG. 1). The transport guide 31 is included.
  • the conveyance guide 31 includes a guide portion 31A that guides bills in the vertical direction in the conveyance portion 13 (FIG. 1) and a support portion 31B that supports the guide portion 31A.
  • the transport guide 31 is manufactured as a molded member formed by molding, for example, a conductive resin material. That is, the guide part 31A and the support part 31B are formed as an integral part.
  • the guide portion 31A is formed in a thin plate shape in the front-rear direction, and the front surface and the rear surface thereof have a flat shape that is substantially parallel to the front surface of the housing housing rear surface portion 10B.
  • the support portion 31B is formed in a thin plate shape in the left-right direction, and is connected to both left and right ends of the guide portion 31A.
  • the support portion 31B is fixed to the storage housing rear surface portion 10B with the rear end in contact with the front surface of the storage housing rear surface portion 10B.
  • the support portion 31B supports the guide portion 31A at a location slightly away from the housing housing rear surface portion 10B. That is, the conveyance guide 31 has a cross-sectional shape viewed from the top and bottom similar to the capital letter “H”.
  • a substrate installation guide 32 is provided at a location that is a predetermined distance away from the guide portion 31A.
  • the substrate installation guide 32 is manufactured, for example, as a molded member in which a non-conductive resin material (for example, plastic) is molded into a thin flat plate shape in the front-rear direction.
  • the substrate installation guide 32 has both left and right ends in contact with the support portion 31B of the transport guide 31, and is supported by the support portion 31B.
  • the medium detection board 33 is attached in contact with the front side of the board installation guide 32.
  • the medium detection board 33 is a printed wiring board and is formed in a thin flat plate shape in the front-rear direction. In the medium detection board 33, the length in the vertical direction is sufficiently shorter than the conveyance guide 31 and the board installation guide 32.
  • a thin-film wiring pattern is formed of a conductive metal material such as copper on the surface of a glass epoxy board manufactured by infiltrating an epoxy resin into glass fibers.
  • a medium detection circuit 40 that detects banknotes is configured on the medium detection board 33 by mounting various electronic components in accordance with the formed wiring pattern (details will be described later). .
  • a planar antenna 34 is formed on the rear surface of the medium detection board 33 by a wiring pattern as shown in a partially enlarged view in FIG.
  • the antenna 34 is configured in a very thin flat plate shape with a copper foil, and is disposed at a position in contact with the front surface of the board installation guide 32 with a planar portion facing backward.
  • the antenna is formed in a rectangular shape when viewed from the front-rear direction, and the length of each side is appropriately set according to the corresponding frequency.
  • a substrate back cover 35 is provided on the front side of the medium detection substrate 33 (FIG. 2).
  • the substrate back cover 35 is configured to cover the front side of the medium detection substrate 33 with a predetermined resin material, and protects the front side of the medium detection substrate 33.
  • the length in the vertical direction of the substrate back cover 35 is approximately the same as that of the medium detection substrate 33.
  • a metal plate 36 that guides the banknotes in the vertical direction is provided at the back of the center between the guide portion 31A of the transport guide 31 and the substrate installation guide 32, that is, on the guide portion 31A side, like the guide portion 31A.
  • the metal plate 36 as a conductor guide is a conductive metal thin plate member in the front-rear direction, for example, a steel plate, and the length in the left-right direction is substantially the same as the board installation guide 32.
  • the length of the metal plate 36 is set to be longer than that of the antenna 34 and is set in a range including a position facing the antenna 34 in the vertical direction.
  • a space sandwiched from the front and rear by the substrate installation guide 32 and the metal plate 36 and sandwiched from the left and right by the left and right support portions 31B in the transport guide 31 is referred to as a transport space 14S in the discrimination unit 14.
  • Each conveyance bearing 37 has a flat columnar shape with the central axis extending in the left-right direction, and is disposed at two locations slightly apart from the center between the left and right support portions 31B. Further, the transport bearing 37 is disposed so as to penetrate the guide portion 31A of the transport guide 31 and a through hole appropriately provided in the metal plate 36 in the front-rear direction, and from the vicinity of the front surface of the storage housing rear surface portion 10B to the transport space 14S. It reaches near the center in the front-rear direction. This conveyance bearing 37 rotates freely.
  • a transport belt 38 is provided on the front side of each transport bearing 37 in the transport space 14S.
  • the conveyor belt 38 is an endless belt that circulates around pulleys provided above and below the medium detection board 33, and stretches the rear side of the board installation guide 32 and the front side of the board back cover 35 along the vertical direction. It is built.
  • a portion below the medium detection substrate 33 and the like of the conveyance belt 38 is configured as a part of the conveyance unit 13 (FIG. 1).
  • the transport belt 38 travels upward on the rear side of the substrate installation guide 32, that is, the front side of the transport bearing 37 in the transport space 14S.
  • the vehicle travels with the front side of the back cover 35 facing downward.
  • the portion of the transport belt 38 that travels in the transport space 14 ⁇ / b> S is pressed near the front end of the transport bearing 37 due to the tension applied with the pulley disposed slightly rearward.
  • the discrimination unit 14 causes the transport belt 38 to travel, and when the bill BL is transported upward from the lower transport unit 13 (FIG. 1), the bill BL is transported in the transport space 14S. While being sandwiched between the belt 38 and the conveyance bearing 37, it continues to be conveyed upward. At this time, the discrimination unit 14 allows the bill BL to pass between the antenna 34 and the metal plate 36 installed on the front side of the board installation guide 32 in the transport space 14S.
  • the conveyance belt 38 and the conveyance bearing 37 are collectively referred to as a conveyance unit or a differential conveyance unit.
  • the medium detection circuit 40 includes a CPU (Central Processing Unit) 41, and a memory 42, a communication interface 43, and a PLL (Phase Locked Loop) 44 are connected to the CPU 41.
  • CPU Central Processing Unit
  • PLL Phase Locked Loop
  • the memory 42 includes a volatile RAM (Random Access Memory), a nonvolatile ROM (Read Only Memory), a flash memory, and the like, and stores various programs and various values.
  • the CPU 41 reads a medium determination program from the memory 42 and executes it to perform a medium determination process described later.
  • the communication interface 43 is connected to the CPU 41 and exchanges various information with the control unit 4 (FIG. 1) described above.
  • the PLL 44 is connected to the CPU 41. Based on the control of the CPU 41, the PLL 44 generates a high-frequency signal S1 having a carrier frequency selected from a high-frequency band such as 5 to 6 [GHz] and directionally couples it. Supply to the vessel 45.
  • the directional coupler 45 has terminals 45A, 45B, 45C and 45D, which are high-frequency signal input / output terminals, as shown in an enlarged view in FIG. Further, a PLL 44, an antenna 34, a terminating resistor 46, and a low noise amplifier (LNA) 47 are connected to terminals 45A, 45B, 45C and 45D of the directional coupler 45 (FIG. 4), respectively.
  • LNA low noise amplifier
  • the directional coupler 45 receives the high frequency signal S2 having about 90% power in the high frequency signal S1 from the terminal 45B as a first terminal. 34, and the high frequency signal S3 having the remaining electric power of about 10% is supplied from the terminal 45D as the second terminal to the low noise amplifier 47.
  • the directional coupler 45 outputs almost no effective signal to the terminating resistor 46 connected to the terminal 45C.
  • the impedance of the terminating resistor 46 is 50 [ ⁇ ] that is generally used when a high-frequency signal is handled.
  • the antenna 34 radiates a high-frequency signal S2 as a first output signal supplied from the terminal 45B of the directional coupler 45 as an electromagnetic wave, thereby opposing the substrate installation guide 32 and the conveyance space 14S.
  • electromagnetic coupling is formed between the metal plate 36 (FIGS. 2 and 3), which is a highly conductive member.
  • the low noise amplifier 47 amplifies the high frequency signal S3 as the second output signal supplied from the terminal 45D of the directional coupler 45 (FIG. 4) to generate the high frequency signal S4.
  • This is supplied to a band pass filter (BPF: Band Pass Filter) 48.
  • the band pass filter 48 passes only a high frequency signal having a desired frequency band in a frequency band called a microwave band of the high frequency signal S4, for example, 0.3 to 30 [GHz].
  • a high frequency signal S5 having a reduced band noise component, that is, a high signal-to-noise power ratio (SNR) is generated and supplied to the detector 49.
  • the detector 49 generates a detection signal S6 having a voltage corresponding to the magnitude of electric power in the input high-frequency signal S5, and supplies this to the AD (Analog / Digital) converter 50.
  • the detector 49 generates a detection signal S6 having a voltage [V] proportional to the power [dBm] of the input high-frequency signal S5. That is, when the fluctuation range of the power of the input high-frequency signal S5 is the predetermined value dP [dBm], the detector 49 indicates that the fluctuation range of the output detection signal S6 is the predetermined value dV [V]. Then, the value of the ratio dV / dP [V / dBm] becomes constant.
  • the AD converter 50 (FIG. 4) generates a digitized detection voltage S7 by converting the voltage value of the detection signal S6 supplied from the detector 49 from analog to digital, and supplies this to the memory 42. To do. In response to this, the memory 42 stores the supplied detection voltage S7.
  • the medium detection circuit 40 generates the detection signal S6 representing the magnitude of the electric power based on the high frequency signal S3 obtained from the terminal 45D of the directional coupler 45 as a part of the high frequency signal S1 generated by the PLL 44. Then, the detected voltage S 7 obtained by digitizing the voltage by the AD converter 50 is stored in the memory 42.
  • the discrimination unit 14 is transported in a single-feed state in which the banknotes to be transported are separated one by one or in a double-feed state in which two or more banknotes are overlapped as the discrimination process. Identify whether it is being transported by
  • the discrimination unit 14 separates and transports the bills BL (that is, the medium) conveyed in the conveyance space 14S (FIG. 2) one by one by the medium detection circuit 40 (FIG. 4). It is detected whether it is a single feed or a double feed conveyed in a state where two or more sheets are overlapped.
  • a transport state whether the banknote transported in the transport space 14S is single-feed or multi-feed is referred to as a transport state
  • the process of detecting the transport state by the discrimination unit 14 is referred to as a transport state detection process.
  • the medium detection circuit 40 radiates the high frequency signal S2 supplied from the terminal 45B of the directional coupler 45 as a radio wave from the antenna 34 (FIG. 3), thereby electromagnetically coupling the metal plate 36 to the metal plate 36. Is forming.
  • the medium detection circuit 40 when the banknote BL is not transported near the antenna 34 by the transport belt 38 or the like, the high-frequency signal S2 output from the terminal 45B and the high-frequency signal S3 output from the terminal 45D are substantially constant. For this reason, in the medium detection circuit 40, the value of the detection signal S6 generated by the detector 49 and the detection voltage S7 obtained by digitizing the detected voltage value are substantially constant.
  • the bill BL has a property as a dielectric. For this reason, in the medium detection circuit 40, when the banknote BL is transported to the vicinity of the antenna 34 by the transport belt 38 or the like, the electromagnetic coupling between the antenna 34 and the metal plate 36 changes.
  • the Q value representing the strength of resonance due to electromagnetic coupling when the antenna 34 side is regarded as a parallel resonant circuit from the terminal 45A to which the high frequency signal S1 is supplied from the PLL 44.
  • the characteristics change, and the power of the high-frequency signal S3 output from the terminal 45D varies accordingly.
  • the value of the detection voltage S7 that represents the magnitude of power in the high-frequency signal S3 changes.
  • the apparent thickness increases in the case of double feeding compared to the case of single feeding, the apparent dielectric constant is different.
  • the degree of change generated in the electromagnetic coupling between the antenna 34 and the metal plate 36 is different in the case of double feeding compared to the case of single feeding.
  • the single detection voltage RV ⁇ b> 1 that is the value of the detection voltage S ⁇ b> 7 is indicated by a solid line in FIG. 7.
  • the single transmission detection voltage RV1 is a constant voltage (hereinafter referred to as a non-conveyance detection voltage RVN) in the period T1 in which the bill BL is located far from the antenna 34, and the bill BL passes in the vicinity of the antenna 34.
  • the voltage temporarily decreases in the period T2, and returns to the original non-transport detection voltage RVN in the period T3 after the passage.
  • the multi-feed detection voltage RV2 that is the value of the detection voltage S7 is, for example, a broken line in FIG. Fluctuate as shown. That is, the double-feed detection voltage RV2 is a constant non-conveyance detection voltage RVN in the period T1 when the bill BL is located far from the antenna 34, and the bill BL passes through the vicinity of the antenna 34, as in the case of single feed. In period T2, it decreases with a larger fluctuation range than in the case of single transmission, and returns to the original non-conveyance detection voltage RVN in period T3 after passage.
  • the single-feed detection voltage fluctuation RD1 and the double-feed detection voltage fluctuation RD2 in which the single-feed detection voltage RV1 and the double-feed detection voltage RV2 are expressed as fluctuation values with respect to the non-carrier-detection voltage RVN, respectively, are shown in FIG. It becomes a curve as shown in.
  • Waveforms representing the single transmission detection voltage fluctuation RD1 and the double transmission detection voltage fluctuation RD2 are shapes obtained by inverting the waveforms representing the single transmission detection voltage RV1 and the double transmission detection voltage RV2 in FIG. Become.
  • the average values of the single transmission detection voltage fluctuation RD1 and the double transmission detection voltage fluctuation RD2 in the period T2 are calculated to be the single transmission detection voltage fluctuation average RDA1 and the double transmission detection voltage fluctuation average RDA2, as shown in FIG. Can be represented.
  • an intermediate value between the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2 is set as the threshold value RTH. Further, in the medium detection circuit 40, based on the detection voltage S7 obtained when the banknote BL is conveyed, a fluctuation value based on the non-carrying detection voltage RVN (hereinafter referred to as a detection voltage fluctuation RD) is calculated. Further, a detection voltage fluctuation average RDA which is an average value thereof is calculated. Then, when the bill BL is a single feed, the detection voltage fluctuation average RDA is less than the threshold value RTH, and when the bill BL is a double feed, the detection voltage fluctuation average RDA is equal to or greater than the threshold value RTH.
  • a detection voltage fluctuation average RDA which is an average value thereof is calculated.
  • the medium detection circuit 40 stores the threshold RTH calculated in advance in the memory 42, calculates the detection voltage fluctuation average RDA based on the detection voltage fluctuation RD of the detection voltage S7 obtained when the bill BL is conveyed, Is compared with the threshold value RTH to determine the conveyance state (single feed or double feed) of the bill BL.
  • the value of the detection voltage S7 when the bill BL is transported in the vicinity of the antenna 34 changes according to the frequency of the high-frequency signal S1 supplied from the PLL 44.
  • the characteristic curve U1 representing the change of the detection voltage S7 with respect to the frequency of the high-frequency signal S1 is such that the minimum value is taken at the predetermined frequency f1.
  • the characteristic curve U2 representing the change of the detection voltage S7 with respect to the frequency of the high-frequency signal S1 is a downwardly convex parabola that takes a minimum value at a frequency f2 different from the frequency f1. Draw an approximate curve.
  • the carrier frequency in the PLL 44 is selected such that the value of the detection voltage S7 is larger in the case of double feed than in the case of single feed, such as the frequency f3 in FIG. .
  • the fluctuation range of the detection voltage S7 from the non-conveyance detection voltage RVN in the period T2 is larger in the double feed case than in the single feed case.
  • the bills BL may differ in size and thickness depending on the denomination.
  • the single-feed detection voltage fluctuation average RDA1 and the double-feed detection voltage fluctuation average RDA2 have different values depending on the denomination of the bill BL. Therefore, the medium detection circuit 40 previously calculates the single-feed detection voltage fluctuation average RDA1 and the double-feed detection voltage fluctuation average RDA2 for each denomination of the bill BL, and then calculates the threshold value RTH for each denomination and stores it in the memory 42. I remember it. That is, the medium detection circuit 40 can switch the determination criterion or determination condition used when determining the conveyance state of the medium for each denomination of the banknote BL.
  • the communication interface of the medium detection circuit 40 recognizes this.
  • the CPU 41 is notified via 43.
  • the CPU 41 is a period including the period before and after the bill BL is conveyed, that is, before and after passing through the vicinity of the antenna 34, and over the entire period including the periods T1 to T3 in FIGS. Are sequentially generated and stored in the memory 42.
  • step SP1 the CPU 41 reads out and acquires the period corresponding to the period T2 in FIGS. 7 and 8 during the period in which the banknote BL is transported through the discrimination unit 14 in the detection voltage S7 stored in the memory 42. The process proceeds to the next step SP2.
  • step SP2 the CPU 41 first calculates the absolute value of the difference of the detection voltage S7 with respect to the non-carrier detection voltage RVN, thereby detecting the voltage fluctuation of the detection voltage S7 with the non-carrier detection voltage RVN as a reference. RD is calculated. Subsequently, the CPU 41 pays attention to a period of “0” or more of the detected voltage fluctuation RD, that is, a range corresponding to the period T2 in FIG. 8, and generates an average detected voltage fluctuation RDA by calculating an average value in this range. Then, the process proceeds to the next step SP3.
  • step SP3 the CPU 41 reads out the threshold value RTH corresponding to the denomination of the conveyed bill BL from the memory 42, and proceeds to the next step SP4.
  • step SP4 the CPU 41 determines whether or not the detected voltage fluctuation average RDA is less than the threshold value RTH. If the determination in step SP4 is affirmed, the CPU 41 proceeds to the next step SP5, and determines that the conveyed bill BL is single-feed. Furthermore, CPU41 notifies the control part 4 (FIG. 1) that the conveyance state of the banknote BL is single sending, Then, it moves to following step SP7 and complete
  • step SP4 determines that the conveyed bill BL is a double feed. . Furthermore, CPU41 notifies the control part 4 (FIG. 1) that the conveyance state of the banknote BL is double feeding, Then, it moves to following step SP7 and complete
  • the discrimination unit 14 of the banknote dispensing machine 1 receives the high-frequency signal S2 supplied from the terminal 45B of the directional coupler 45 (FIGS. 3 and 4) from the antenna 34 as a radio wave.
  • the electromagnetic coupling is formed between the metal plate 36 and the metal plate 36 facing each other with the conveyance space 14S (FIG. 2) interposed therebetween.
  • the discrimination unit 14 when the bill BL is transported through the transport space 14S, the state of electromagnetic coupling changes, and the power of the high-frequency signal S3 obtained from the terminal 45C of the directional coupler 45 varies. Moreover, in the discrimination part 14, the fluctuation
  • the discrimination unit 14 calculates a detection voltage fluctuation average RDA, which is an average of fluctuation values from the non-carrier detection voltage RVN, based on the detection voltage S7 representing the power of the high-frequency signal S3, and compares this with the threshold value RTH.
  • a detection voltage fluctuation average RDA which is an average of fluctuation values from the non-carrier detection voltage RVN
  • the detection voltage S7 representing the power of the high-frequency signal S3
  • the threshold value RTH the conveyance state of the banknote BL is determined (FIG. 8).
  • the discrimination unit 14 can clearly determine the magnitude relationship between the detected voltage fluctuation average RDA and an appropriate threshold value RTH, and can accurately determine the conveyance state of the bill BL.
  • the medium detection board 33 that forms the medium detection circuit 40, the necessary wiring member, and the like may be provided only on the front side that is one side of the transport space 14S. Only one metal plate 36 may be disposed on the rear side of the transfer space 14S (FIG. 2). Therefore, the discrimination unit 14 can reduce the size of the apparatus as compared with the case where a transmitter, a receiver, and the like are installed on both sides of the transport space 14S as in Patent Document 1, respectively.
  • the discrimination part 14 detects a conveyance state using the electromagnetic coupling of the antenna 34 which radiates
  • the roller is arrange
  • the frequency of occurrence of clogging of the bills BL can be significantly reduced.
  • the discrimination section 14 clearly distinguishes the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2 (FIG. 8) by appropriately selecting the frequency of the high frequency signal S1 generated by the PLL 44 (FIG. 4). (Fig. 9).
  • the detection voltage obtained at the time of conveyance of banknote BL is set by setting the intermediate value etc. which are located between this single transmission detection voltage fluctuation average RDA1 and double transmission detection voltage fluctuation average RDA2 to threshold value RTH.
  • the discrimination unit 14 calculates a threshold value RTH in advance for each denomination of the bill BL and stores it in the memory 42, and sets the threshold value RTH corresponding to the denomination of the bill BL notified from the control unit 4 (FIG. 1). The data is read from the memory 42. For this reason, the discrimination part 14 can improve the discrimination
  • the discrimination unit 14 of the banknote dispensing machine 1 radiates the high-frequency signal S2 supplied from the terminal 45B of the directional coupler 45 as a radio wave from the antenna 34 and carries it. Electromagnetic coupling was formed between the metal plates 36 facing each other across the space 14S.
  • the discrimination unit 14 reduces the noise included in the high-frequency signal S3 output from the terminal 45C of the directional coupler 45 by the band-pass filter 48 when the bill BL is transported in the transport space 14S, thereby reducing the signal-to-noise.
  • the detection voltage S7 representing the power of the high-frequency signal S5 with an increased power ratio SNR is obtained to calculate the detection voltage fluctuation average RDA, and by comparing this with the threshold value RTH, the conveyance state of the bill BL can be determined. That is, in the discrimination unit 14, the bill BL is single-feed or double-feed while the apparatus configuration is downsized by the configuration in which the medium detection substrate 33 is disposed only in one of the transport spaces 14 ⁇ / b> S and only the metal plate 36 is disposed on the opposite side. It can be detected with high accuracy.
  • the banknote dispensing machine 101 (FIG. 1) according to the second embodiment is different from the banknote dispensing machine 1 according to the first embodiment in that it includes a discrimination unit 114 that replaces the discrimination unit 14.
  • the other points are configured similarly.
  • the discrimination unit 114 includes a transport space 14 ⁇ / b> S and a medium detection substrate 133 (FIG. 2) instead of the transport space 14 ⁇ / b> S and the medium detection substrate 133, and a light emitting sensor substrate 139. Although different in point, the other points are configured similarly.
  • the medium detection board 133 in addition to the radio wave system detection circuit 140 and MPU (Micro Processing Unit) 141 corresponding to the medium detection circuit 40 in the first embodiment, and the antenna 34 similar to the first embodiment.
  • An optical system detection circuit 142 and a light receiving sensor 143 are provided.
  • the radio wave system detection circuit 140 has a configuration in which the CPU 41, the memory 42, the communication interface 43 and the AD converter 50 are omitted from the medium detection circuit 40 in the first embodiment. is there.
  • the CPU 41, the memory 42, the communication interface 43, and the AD converter 50 omitted from the medium detection circuit 40 are incorporated in the MPU 141 as shown in FIG.
  • the MPU 141 is provided with a crystal oscillator 151 that generates a clock signal and a timer 152 that measures time based on the clock signal.
  • the MPU 141 (FIG. 13) and the radio wave detection circuit 140 (FIG. 12) operate in the same manner as the medium detection circuit 40 in the first embodiment. That is, the PLL 44 generates a high-frequency signal S1 based on the control of the CPU 41 and supplies it to the terminal 45A (FIG. 5) of the directional coupler 45.
  • the directional coupler 45 radiates a radio wave based on the high-frequency signal S2 by supplying the high-frequency signal S2 from the terminal 45B to the antenna 34, and forms electromagnetic coupling with the metal plate 36.
  • the directional coupler 45 supplies the high frequency signal S3 from the terminal 45C to the low noise amplifier 47 to generate a high frequency signal S4, which is further supplied to the band pass filter 48 to generate the high frequency signal S5.
  • the detector 49 generates a detection signal S6 having a voltage corresponding to the magnitude of electric power in the high-frequency signal S5, and supplies this to the MPU 141.
  • the MPU 141 digitizes the voltage value of the detection signal S6 by the AD converter 50 to generate the detection voltage S7, and stores it in the memory 42.
  • the optical system detection circuit 142 (FIG. 11) is connected to the light emitting sensor 144 provided on the light emitting sensor substrate 139 in addition to the MPU 141 and the light receiving sensor 143. Based on the control of the MPU 141, the light emitting sensor 144 and the light receiving sensor. 143 is controlled.
  • the light emitting sensor substrate 139 is disposed on the opposite side of the medium detection substrate 133 with respect to the conveyance space 114S, that is, on the rear side.
  • a light emitting element 144 is incorporated in the light emitting sensor 144 serving as a light emitting unit.
  • the light emitting element emits light based on an electric signal supplied from the optical system detection circuit 142, and predetermined detection light is transmitted to the front conveyance space 114S.
  • the light is emitted.
  • This detection light is, for example, an electromagnetic wave of 3 [THz] or more, and is an electromagnetic wave having a property as light, that is, infrared light or the like.
  • the light receiving sensor 143 as a light receiving unit is provided at a location facing the light emitting sensor 144 across the conveyance space 114S, and a light receiving element is incorporated therein.
  • the light receiving sensor 143 receives the detection light emitted from the light emitting sensor 144 by the light receiving element, generates a light reception signal S11 having a voltage corresponding to the amount of light received by the detection light, and supplies the light reception signal S11 to the optical system detection circuit 142.
  • the optical system detection circuit 142 supplies the light reception signal S11 to the MPU 141.
  • the MPU 141 digitizes the voltage value of the light reception signal S11 by the AD converter 50 to generate the light reception voltage S12, and stores this in the memory 42.
  • each component and various signals related to the radio wave radiated from the antenna 34 that is, a group of the antenna 34, the radio wave system detection circuit 140, the detection voltage S7, and the like will be referred to as “radio wave system”.
  • radio wave system a component and various signals related to the detection light emitted from the light emitting element of the light emission sensor 144, that is, a group of the light emission sensor 144, the optical system detection circuit 142, the light reception voltage S12, and the like.
  • the CPU 41 of the MPU 141 determines the conveyance state of the banknote BL based on the detection voltage S7 stored in the memory 42 as in the first embodiment. That is, in the discrimination unit 114, when the bill BL is transported through the transport space 114S, a change occurs in the electromagnetic coupling between the antenna 34 and the metal plate 36, and the value of the detection voltage S7 varies accordingly (FIG. 7). . Further, the detection voltage S7 has a different degree of fluctuation depending on the state of conveyance of the bill BL (single feed or double feed), and draws a waveform such as the single feed detection voltage RV1 or the double feed detection voltage RV2.
  • the fluctuation values of the single transmission detection voltage RV1 and the double transmission detection voltage RV2 with respect to the non-carrier detection voltage RVN are the single transmission detection voltage fluctuation RD1 and the double transmission detection voltage fluctuation RD2 in FIG. Further, the average values in the respective periods T2 are the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2.
  • the discrimination part 114 whenever the banknote BL is conveyed, the position regarding the left-right direction of the banknote BL and the inclination angle with respect to the traveling direction are not necessarily the same, and may be slightly different. That is, each time the bill BL is conveyed, the discrimination unit 114 varies in the values of the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2.
  • the value of the detection voltage fluctuation average RDA is the horizontal axis and the frequency (that is, probability density) is the vertical axis, as shown in FIG.
  • Group characteristic curves ie probability density distribution curves
  • the discrimination unit 114 sets a value slightly larger than the distribution range of the single detection voltage fluctuation average RDA1 and a value slightly smaller than the distribution range of the double detection voltage fluctuation average RDA2 to the threshold values RTH1 and RTH2, respectively.
  • the detection voltage fluctuation average RDA is smaller than the threshold value RTH1 as the first threshold value, it can be clearly identified as single transmission, and the detection voltage fluctuation average RDA is more than the threshold value RTH2 as the second threshold value. If it is too large, it can be clearly identified as double feeding.
  • the value of the detection voltage fluctuation average RDA is between the threshold values RTH1 and RTH2, it is not easy for the discrimination unit 114 to determine the conveyance state of the bills BL only from the value of the detection voltage fluctuation average RDA.
  • threshold values RTH1 and RTH2 are calculated in advance for each denomination of the banknote BL, and stored in the memory 42 (FIG. 13) of the MPU 141.
  • CPU41 of MPU141 discriminate
  • the discrimination unit 114 emits detection light from the light emitting sensor 144 arranged on the rear side of the conveyance space 114S, and receives the detection light by the light receiving sensor 143 arranged on the front side of the conveyance space 114S.
  • the light reception signal S11 corresponding to the above is generated.
  • the discrimination part 114 when the banknote BL is transported through the transport space 114S, a part of the detection light is blocked by the banknote BL and only the remaining part passes, so the amount of light received by the light receiving sensor 143 is reduced. To do. That is, at this time, in the discrimination unit 114, the signal level of the light reception signal S11 decreases, and the value of the light reception voltage S12 also decreases.
  • the discrimination part 114 when the banknote BL to be conveyed is a double feed, the amount of light received by the light receiving sensor 143 is further reduced because the degree of blocking the detection light is increased as compared with the single feed. That is, at this time, in the discrimination unit 114, the signal level of the light reception signal S11 is further lowered, and the value of the light reception voltage S12 is further reduced. For this reason, the single-feed light reception voltage OV1 and the double-feed light reception voltage OV2 representing the value of the light reception voltage S12 when the bill BL is conveyed in each of the single feed and the double feed are shown in FIG. 15 corresponding to FIG. To change.
  • a voltage average OVA1 and a double feed light reception voltage average OVA2 are obtained.
  • the bills BL have a certain degree of variation because the light transmittance, that is, the ratio of blocking the detection light, is not necessarily constant due to the nature of the paper that is the constituent material. Moreover, in the banknote BL, since the degree of damage may increase with distribution or dirt may adhere, the light transmittance may change. That is, in the discrimination unit 114, each time the banknote BL is transported, the single-transmission light reception voltage average OVA1 and the multi-transmission light reception voltage average OVA2 each time the bill BL is transported, as in the case of the single transmission detection voltage fluctuation average RDA1 and the double transmission detection voltage fluctuation average RDA2. Will vary.
  • the value of the light reception voltage average OVA is plotted on the horizontal axis and the frequency (that is, probability density) is plotted on the vertical axis, and FIG. 16 corresponding to FIG. Two groups of characteristic curves (ie probability density distribution curves) were obtained as shown.
  • the frequency of the light reception voltage average OVA itself is aggregated, not the fluctuation value based on the non-transport light reception voltage OVN corresponding to the non-transport detection voltage RVN. .
  • the single transmission light reception voltage average OVA1 has a larger value than the double transmission light reception voltage average OVA2, and is distributed on the right side of the figure.
  • the discrimination unit 114 sets a value slightly larger than the distribution range of the double feed light reception voltage average OVA2 and a value slightly smaller than the distribution range of the single transmission light reception voltage average OVA1 to the threshold values OTH1 and OTH2, respectively.
  • the discrimination unit 114 can clearly discriminate single feeding when the received light voltage average OVA is larger than the threshold value OTH2, and clearly discriminates double feeding when the received light voltage average OVA is smaller than the threshold value OTH1. it can.
  • threshold values OTH1 and OTH2 are calculated in advance for each denomination of the banknote BL, and stored in the memory 42 (FIG. 13) of the MPU 141. ing.
  • the discrimination unit 114 comprehensively detects the transport state (single feed or double feed) of the bills BL by combining the transport state detection process using the radio wave system and the transport state detection process using the optical system. Below, the conveyance state detection process by the discrimination part 114 is demonstrated, referring the flowchart of FIG. 17 corresponding to FIG.
  • the discrimination unit 114 is notified of the banknote BL being transported by the transport unit 13 and the denomination of the banknote BL from the control unit 4 (FIG. 1).
  • the CPU 41 of the MPU 141 is notified.
  • the CPU 41 sequentially generates the detection voltage S7 and the light reception voltage S12 in the memory 42 while the bill BL is conveyed, that is, over the entire period including the periods T1 to T3 in FIGS. I will remember it.
  • CPU41 reads the conveyance state detection program from the memory 42, when banknote BL passes the vicinity of the antenna 34, and complete
  • the conveyance state detection processing procedure RT2 (FIG. 17) is started and the process proceeds to step SP11.
  • step SP11 the CPU 41 reads out and acquires a portion corresponding to the period during which the bill BL is transported in the discrimination unit 14 from the detection voltage S7 and the light reception voltage S12 stored in the memory 42, and proceeds to the next step SP12. Move.
  • step SP12 as in step SP2 (FIG. 10), the CPU 41 first calculates the absolute value of the difference between the detection voltage S7 and the non-transport detection voltage RVN, so that the detection voltage based on the non-transport detection voltage RVN is used as a reference.
  • a detection voltage fluctuation RD which is a fluctuation value of S7 is calculated.
  • the CPU 41 calculates a detection voltage fluctuation average RDA that is an average value in a range corresponding to the period T2 (FIG.
  • the CPU 41 calculates a light reception voltage average OVA that is an average value in a range corresponding to the period T2 (FIG. 15) in the light reception voltage S12, and proceeds to the next step SP13.
  • step SP13 the CPU 41 reads out the threshold values RTH1, RTH2, and OTH2 corresponding to the denomination of the conveyed bill BL from the memory 42, and proceeds to the next step SP14.
  • step SP14 the CPU 41 first determines whether or not the detected voltage fluctuation average RDA is less than the threshold value RTH1.
  • step SP14 If the determination in step SP14 is affirmative, the detection voltage fluctuation average RDA is equal to the single-transmission detection voltage fluctuation average RDA1 (FIG. 14), and therefore it is not necessary to use the conveyance state detection process of the optical system.
  • the CPU 41 proceeds to the next step SP15, determines that the conveyed bill BL is single-feed, notifies this to the control unit 4 (FIG. 1), and then proceeds to the next step SP21 to carry the state.
  • the detection processing procedure RT2 is terminated.
  • the control unit 4 determines that the banknote BL can be withdrawn, determines the transport destination to the stacking unit 16 (FIG. 1), and transports it.
  • step SP14 determines whether or not the detection voltage fluctuation average RDA is larger than the threshold value RTH2.
  • step SP16 If the determination in step SP16 is affirmative, the detection voltage fluctuation average RDA is equal to the double feed detection voltage fluctuation average RDA2 (FIG. 14), and therefore it is not necessary to use the conveyance state detection process of the optical system.
  • the CPU 41 proceeds to the next step SP17, determines that the conveyed bill BL is a double feed, notifies the control unit 4 (FIG. 1) of this, and then proceeds to the next step SP21 to carry the state.
  • the detection processing procedure RT2 is terminated.
  • the control unit 4 determines that the banknote BL cannot be withdrawn, determines the transport destination to the reject storage 17 (FIG. 1), and transports it.
  • the detection voltage fluctuation average RDA is a value that is relatively different from both the single transmission detection voltage fluctuation average RDA1 and the double transmission detection voltage fluctuation average RDA2, and only the detection processing of the radio wave system is performed. Therefore, it is difficult to determine the transport state. At this time, the CPU 41 proceeds to the next step SP18.
  • step SP18 the CPU 41 determines whether or not the received light voltage average OVA is larger than the threshold value OTH2. If the determination at step SP18 is affirmative, the light reception voltage average OVA is equal to the single-transmission light reception voltage average OVA1 (FIG. 16). At this time, the CPU 41 proceeds to the next step SP19, and similarly to the case of step SP15, determines that the conveyed banknote BL is single-feed, notifies this to the control unit 4 (FIG. 1), and then proceeds to the next step SP19. The process proceeds to step SP21, and the conveyance state detection processing procedure RT2 is ended.
  • step SP18 determines whether the conveyed bill BL is a double feed, and notifies the controller 4 (FIG. 1) of this, and then The process proceeds to step SP21, and the conveyance state detection processing procedure RT2 is ended.
  • the discrimination unit 114 of the banknote dispensing machine 101 includes each component of the optical system in addition to each component of the radio wave system that is the same configuration as the first embodiment. That is, an optical system detection circuit 142, a light emission sensor 144 that emits detection light, and a light reception sensor 143 that receives the detection light are provided. Among them, the light emitting sensor 144 and the light receiving sensor 143 are arranged at positions facing each other across the conveyance space 114S.
  • the discrimination unit 114 when the bill BL is transported through the transport space 114S, a part of the detection light is blocked, so that the signal level of the light reception signal S11 generated by the light reception sensor 143 changes. Moreover, in the discrimination part 114, the fluctuation
  • the discrimination part 114 sets an appropriate threshold value OTH1 or OTH2 and compares it with the light reception voltage average OVA, thereby accurately detecting whether the conveyed bill BL is single-feed or multi-feed. can do.
  • the discrimination unit 114 first performs a conveyance state detection process based on the detection voltage S7 of the radio wave system, and performs a conveyance state detection process based on the light reception voltage S12 of the optical system only when it cannot be properly determined (see FIG. 17). Thereby, the discrimination part 114 can raise the detection accuracy of a conveyance state markedly compared with 1st Embodiment.
  • the discrimination unit 114 sequentially performs a conveyance state detection process based on the detection voltage S7 of the radio wave system and a conveyance state detection process based on the light reception voltage S12 of the optical system. Therefore, it is not necessary to perform an excessive calculation process, and an excessive processing load is not applied to the CPU 41 or the like.
  • the discrimination unit 114 generates a characteristic curve representing the frequency for each value of the detection voltage fluctuation average RDA for each of the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2, and based on this, thresholds RTH1 and RTH2 are generated. Was set (FIG. 14). For this reason, the discrimination part 114 can determine whether it is a single feed, a double feed, or both by comparing the detection voltage fluctuation average RDA obtained at the time of conveyance of the banknote BL with the threshold values RTH1 and RTH2. It is possible to easily determine whether there is any.
  • the discrimination unit 114 can achieve the same effects as those of the first embodiment, particularly in the radio wave system transport state detection process.
  • the discrimination unit 114 of the banknote dispensing machine 101 includes the optical system detection circuit 142, the light emission sensor 144, and the optical system components in addition to the radio system components.
  • a light receiving sensor 143 is provided, and the light emitting sensor 144 and the light receiving sensor 143 are arranged at positions facing each other across the conveyance space 114S.
  • the discrimination unit 114 first performs a conveyance state detection process based on the detection voltage S7 of the radio wave system, and performs a conveyance state detection process based on the light reception voltage S12 of the optical system only when it cannot be properly determined. Compared with the case of using only one of them, the detection accuracy of the conveyance state can be remarkably improved.
  • the banknote dispensing machine 201 (FIG. 1) according to the third embodiment is different from the banknote dispensing machine 1 according to the first embodiment in that it includes a discrimination unit 214 that replaces the discrimination unit 14.
  • the other points are configured similarly.
  • the discrimination unit 214 basically has a configuration in which two sets of each component of the radio wave system and each component of the optical system in the second embodiment are incorporated. Specifically, as shown in the schematic configuration in FIG. 18 corresponding to FIG. 11, the discrimination unit 214 replaces the transport space 114S, the medium detection board 133, and the light emitting sensor board 139 with the transport space 214S, the medium detection board. 233 and a light emitting sensor substrate 239.
  • the medium detection board 233 includes an MPU 241 instead of the MPU 141, and is configured similarly to the radio wave system detection circuit 140 with respect to the radio wave system.
  • Each of the radio wave system detection circuits 240L and 240R and the two antennas 234L and 234R configured similarly to the antenna 34 are provided. Therefore, the medium detection board 233 has two sets of parts for generating the radio wave detection voltage S7.
  • the medium detection board 233 has two optical system detection circuits 242L and 242R configured similarly to the optical system detection circuit 142 and two light reception sensors 243L configured similar to the light reception sensor 143. 243R.
  • the light emission sensor substrate 239 includes light emission sensors 244L and 244R configured similarly to the light emission sensor 144. Therefore, the medium detection board 233 has two sets of parts for generating the light reception voltage S12 of the optical system.
  • the discrimination unit 214 is located in the vicinity of the center in the left-right direction as the width direction, that is, in the direction intersecting with the upward direction that is the direction in which the bill BL is transported in the transport space 214S.
  • the left and right portions are a left detection region 214L and a right detection region 214R, respectively.
  • at least the antenna 234L, the light receiving sensor 243L, and the light emitting sensor 244L are arranged in the left detection region 214L.
  • the right detection region 214R at least an antenna 234R, a light receiving sensor 243R, and a light emitting sensor 244R are arranged.
  • the metal plate 36 is provided over a wide range extending over the left detection region 214L and the right detection region 214R.
  • the antenna 234L, the light receiving sensor 243L, and the light emitting sensor 244L arranged in the left detection region 214L are respectively a radio wave system detection circuit 240L and an optical system detection circuit, similarly to the medium detection board 133 (FIG. 11) in the second embodiment.
  • the 242L and the MPU 241 are appropriately connected. Therefore, the MPU 241, the radio wave system detection circuit 240L, the antenna 234L, the metal plate 36, the optical system detection circuit 242L, the light receiving sensor 243L, and the light emission sensor 244L (hereinafter collectively referred to as the left detection unit 230L) are conveyed bills.
  • the detection voltage S7, the light reception voltage S12, and the like can be generated.
  • various signals and data (for example, the detection voltage S7 and the light reception voltage S12) generated by the left detection unit 230L are collectively referred to as a left detection signal group.
  • the antenna 234R, the light receiving sensor 243R, and the light emitting sensor 244R arranged in the right detection region 214R are respectively a radio wave system detection circuit 240R and an optical system detection, similarly to the medium detection board 133 in the second embodiment.
  • the circuit 242R and the MPU 241 are appropriately connected. Therefore, the MPU 241, the radio wave system detection circuit 240R, the antenna 234R, the metal plate 36, the optical system detection circuit 242R, the light receiving sensor 243R, and the light emission sensor 244R (hereinafter collectively referred to as the right detection unit 230R) are conveyed bills.
  • the detection voltage S7, the light reception voltage S12, and the like can be generated.
  • various signals and data generated by the right detection unit 230R are collectively referred to as a right detection signal group.
  • the discrimination unit 214 the high frequency signal S1 is alternately generated by the PLL 44 between the radio wave detection circuits 240L and 240R under the control of the CPU 41 provided in the MPU 241. Thereby, in the discrimination part 214, it can avoid beforehand that a mutual electromagnetic wave exerts a bad influence on the other party between the radio
  • the security thread ST is provided on the banknote BL transported upward in the transport space 214S.
  • the security thread ST is provided only on one of the left and right sides slightly deviated from the center with respect to the long side direction of the banknote (that is, the left-right direction in the transport space 214S).
  • This security thread ST has a structure in which a member made of a material different from a material (for example, paper) constituting another part of the bill BL such as a thin metal or a predetermined resin film is embedded.
  • the detection voltage S7 and the light reception voltage S12 generated by the left detection unit 230L are in the vicinity of the antenna 234L in the banknote BL. It is different from the case where other parts have passed. That is, for example, even when the bill BL is single-feed, the detection voltage fluctuation RD changes so as to draw a waveform deviating from the single-feed detection voltage fluctuation RD1 (FIG. 8), and the value of the detection voltage fluctuation average RDA is also It becomes a value different from the single transmission detection voltage fluctuation average RDA1 (FIG. 8).
  • the security thread ST causes a reaction different from that of other parts in the bill BL in the left detection unit 230L and the right detection unit 230R. Therefore, in the following, the security thread ST is also referred to as an abnormal reaction unit.
  • the discrimination unit 214 uses a detection signal group obtained from the left detection unit 230L and the right detection unit 230R that do not have the security thread ST of the bill BL. Thereby, in the discrimination part 214, it becomes possible to discriminate
  • the security thread ST is present in either the left detection area 214L or the right detection area 214R in the bill BL conveyed in the conveyance space 214S by the CPU 41 (FIG. 13) of the MPU 241 prior to the conveyance state detection process.
  • Security thread position determination processing is performed to determine whether or not to perform.
  • the CPU 41 calculates the standard deviation of the light reception voltage S12 obtained from the left detection unit 230L and the right detection unit 230R, respectively, and the left light reception voltage standard deviation OVVL and the right light reception voltage standard, respectively.
  • the deviation is OVVR.
  • the light reception voltage S12 has a larger fluctuation range from the non-transport light reception voltage OVN (FIG. 15) and a larger standard deviation than when the security thread ST is not present. .
  • the MPU 241 compares the left light reception voltage standard deviation OVVL and the right light reception voltage standard deviation OVVR, and if there is a security thread ST in the detection area corresponding to the larger value (that is, the left detection area 214L or the right detection area 214R). to decide.
  • the MPU 241 performs a conveyance state detection process using a detection signal group (a left detection signal group or a right detection signal group) obtained from a detection region that is determined to have no security thread ST.
  • the left detection area 214L and the right detection area 214R in which the security thread ST (that is, the different reaction part) of the bill BL is present is also referred to as a different reaction detection area.
  • the discrimination unit 214 is notified that the bill BL is being transported by the transport unit 13 and the denomination of the bill BL from the control unit 4 (FIG. 1). This is notified to the CPU 41 (FIG. 13) of the MPU 241. In response to this, the CPU 41 detects the detection voltage S7 and the detection voltage S7 by the left detection unit 230L and the right detection unit 230R, respectively, while the bill BL is being conveyed, that is, over the entire period including the periods T1 to T3 in FIGS. The received light voltage S12 is sequentially generated and stored in the memory 42.
  • the CPU 41 reads the conveyance state detection program from the memory 42 and executes it when the bill BL passes the vicinity of the antennas 234L and 234R and ends the period T2 in FIGS. Processing procedure RT3 (FIG. 20) is started and the routine goes to Step SP31.
  • step SP31 the CPU 41 first starts a security thread position determination process. Specifically, the CPU 41 is a period during which the banknote BL is transported in the discrimination unit 14 among the light reception voltages S12 of the left detection signal group and the right detection signal group stored in the memory 42 (that is, the period T2 in FIG. 15). ) Are read out and acquired, and the process proceeds to the next step SP32.
  • step SP32 the CPU 41 calculates the left light reception voltage standard deviation OVVL and the right light reception voltage standard deviation OVVR based on the light reception voltages S12 of the left detection signal group and the right detection signal group, respectively, and proceeds to the next step SP33.
  • step SP33 the CPU 41 determines whether or not the left light reception voltage standard deviation OVVL is smaller than the right light reception voltage standard deviation OVVR. Affirmation of the determination indicates that it can be determined that the security thread ST exists on the right side of the bill BL. At this time, the CPU 41 proceeds to the next step SP34, determines to adopt the left detection signal group obtained from the left detection unit 230L in the subsequent transport state detection process, and proceeds to the next step SP36.
  • step SP33 determines that it can be determined that the security thread ST exists on the left side of the bill BL.
  • the CPU 41 proceeds to the next step SP35, determines to adopt the right detection signal group obtained from the right detection unit 230R in the subsequent transport state detection process, and proceeds to the next step SP36.
  • steps SP36 to SP45 the CPU 41 performs processing similar to steps SP11 to SP20 of the transport state detection processing procedure RT2 (FIG. 17) in the second embodiment, using the detection signal group employed. .
  • the CPU 41 since the CPU 41 has already read the light reception voltage S12 in step SP31, the CPU 41 reads and acquires only the detection voltage S7 from the memory 42 in step SP36. Thereafter, the CPU 41 proceeds to step SP46 and ends the transport state detection processing procedure RT3.
  • the discrimination unit 214 of the banknote dispenser 201 according to the third embodiment has two systems of radio wave system and optical system in the discrimination unit 114 (FIG. 11) according to the second embodiment. Provided. Further, the discrimination unit 214 distributes and arranges the antennas 234L and 234R, the light receiving sensors 243L and 243R, etc. into the left detection region 214L and the right detection region 214R, and configures the left detection unit 230L and the right detection unit 230R (FIG. 19).
  • the CPU 41 (FIG. 13) of the MPU 241 (FIG. 18) in the discrimination unit 214 first determines whether the security thread ST of the bill BL is located on the left or right by performing security thread position determination processing, and then the security thread.
  • the conveyance state detection process is performed using the detection signal group on which the ST is not located (FIG. 20).
  • the discrimination unit 214 detects the conveyance state based on the detection voltage S7 and the light reception voltage S12 that are not affected by the security thread ST. Since the processing can be performed, the conveyance state (single feed or double feed) of the bill BL can be detected with extremely high accuracy.
  • the discrimination unit 214 performs security thread position determination processing based on the comparison result of the left light reception voltage standard deviation OVVL and the right light reception voltage standard deviation OVVR, which are standard deviations based on the left and right light reception voltages S12. The position is discriminated (steps SP33 to SP35).
  • the discrimination unit 214 is inclined. Even when the security thread ST blocks the detection light only for a short period, it can be determined with high accuracy whether the security thread ST is located on the left or right.
  • the discrimination unit 214 can achieve the same effects as the discrimination unit 114 according to the second embodiment in other respects.
  • the discrimination unit 214 of the banknote dispenser 201 is provided with two systems of radio wave system and optical system, respectively, and the antennas 234L and 234R and the like are connected to the left detection area 214L and The left detection unit 230L and the right detection unit 230R are configured by being arranged in the right detection region 214R.
  • the CPU 41 of the discrimination unit 214 determines whether the security thread ST of the bill BL is located on the left or right by performing a security thread position determination process, and uses a detection signal group obtained from the side where the security thread ST is not located. The conveyance state detection process is performed. For this reason, the discrimination part 214 can detect the conveyance state (single feed or double feed) of the banknote BL with extremely high accuracy without being affected by the security thread ST.
  • the present disclosure is not limited thereto, and various conductors such as a second antenna having characteristics corresponding to the carrier frequency of the high-frequency signal S2 may be disposed instead of the metal plate 36, for example. Any conductor may be used as long as it can form electromagnetic coupling with the antenna 34 by electromagnetic waves radiated from the antenna 34. The same applies to the second and third embodiments.
  • the substrate back cover 35 (FIG. 1) is made of a resin material.
  • the present disclosure is not limited to this, and for example, the substrate back cover 35 may be made of a metal material.
  • the electromagnetic wave that attempts to reach the medium detection substrate 33 from the outside can be shielded, it can be avoided that the electromagnetic wave adversely affects the electromagnetic coupling formed between the antenna 34 and the metal plate 36.
  • the high-frequency signal S1 having the frequency f3 (FIG. 9) at which the value of the detection voltage RV is larger is directionally coupled from the PLL 44 in the case of double feed than in the case of single feed.
  • the case of supplying to the container 45 has been described.
  • the present disclosure is not limited to this.
  • the high-frequency signal S1 having the frequency f4 (FIG. 9) in which the value of the detection voltage RV becomes smaller in the double feed than in the single feed is sent from the PLL 44 to the directional coupler 45. May be supplied.
  • the frequency can be set so that single feed or double feed can be clearly distinguished by setting an appropriate threshold value RTH. That's fine.
  • the carrier frequency may be such that the detection voltage RV (FIG. 7) rises higher than the non-conveyance detection voltage RVN when the banknote BL is conveyed.
  • the frequency range is, for example, an electromagnetic wave of 3 [THz] or less, which is generally defined as a radio wave, and may be a range that can constitute electromagnetic coupling between the antenna 34 and the metal plate 36. The same applies to the second and third embodiments.
  • the conveyance state of the bills BL is determined according to the result of comparing the detection voltage fluctuation average RDA with the threshold value RTH has been described (FIG. 8).
  • the present disclosure is not limited to this.
  • a value of the detection voltage S7 in the period T2 is prepared, for example, by creating a model waveform of the detection voltage fluctuation RD and determining the conveyance state based on the magnitude of the correlation value with respect to the model waveform.
  • an optimum threshold value RTH is calculated in advance for each denomination of the banknote BL and stored in the memory 42, and according to the denomination of the banknote BL transported through the transport space 14S.
  • the case where the read threshold value RTH is read from the memory 42 and the conveyance state detection process is performed has been described.
  • the present disclosure is not limited to this.
  • the conveyance state detection process may be performed using the common threshold value RTH for all denominations. The same applies to the second and third embodiments.
  • the discrimination unit 14 is provided with a sensor such as an image sensor, the denomination is determined based on the detection result obtained by the sensor, and the threshold value RTH corresponding to the determined denomination is set. You may read from the memory 42. That is, the denomination of the bill BL may be obtained by various means such as various information notified from other than the discrimination unit 14 or the result of discrimination performed by the discrimination unit 14 itself. The same applies to the second and third embodiments.
  • a state in which two or more banknotes BL are stacked and transported is defined as double feeding, and the medium transported through the transport space 14S is either single feeding or double feeding.
  • the present disclosure is not limited to this, and for example, it may be determined whether the number of the banknotes BL transported in the transport space 14S is one of two, three, or more. In this case, a threshold value for distinguishing between one and two sheets and a threshold value for distinguishing between two and three sheets may be provided. Further, it may be determined whether the number of the banknotes BL is four or more. The same applies to the second and third embodiments.
  • the transport state detection process of the radio wave system is performed first and the transport state detection process of the optical system is performed later when the transport state cannot be determined has been described ( FIG. 17).
  • the present disclosure is not limited to this.
  • the transport state detection process of the optical system is performed first and the received light voltage average OVA is between the threshold values OTH1 and OTH2 (FIG. 16)
  • the transport state cannot be determined.
  • the radio wave system conveyance state detection process may be performed later.
  • the threshold value RTH1 is used in the radio wave transport state detection process, so that even when it is difficult to determine the transport state, it is regarded as a double feed, and the bill BL is transported to the reject storage 17 (FIG. 1). Accordingly, it is possible to withdraw only the bills BL that can be clearly determined to be single-feed. That is, it is attempted to determine the conveyance state based on one of the detection voltage S7 based on the detection signal S6 and the light reception voltage S12 based on the light reception signal S11. If the determination is not possible, the conveyance state is determined based on the other. That's fine. The same applies to the third embodiment.
  • the carrying state detection process based on the detection voltage S7 of the radio wave system and the carrying state detection process based on the light reception voltage S12 of the optical system are sequentially performed.
  • the present disclosure is not limited thereto.
  • the weighted average value of the detection voltage S7 and the light reception voltage S12 is calculated, and the conveyance state is determined by comparing the weighted average value with a predetermined threshold.
  • the conveyance state may be determined after performing various arithmetic processes by combining the voltage S12. The same applies to the third embodiment.
  • the frequency distribution (that is, probability density) of the detection voltage fluctuation average RDA is calculated and the two threshold values RTH1 and RTH2 are set has been described.
  • the present disclosure is not limited to this.
  • the two threshold values RTH1 and RTH2 are based on the values of the single detection voltage fluctuation average RDA1 and the double detection voltage fluctuation average RDA2 (FIG. 8). May be set.
  • step SP14 after calculating the optical reception voltage average OVA of the optical system and reading the threshold value OTH2 in advance in steps SP12 and SP13, step SP14 and subsequent steps.
  • the case of performing the determination process was described.
  • the present disclosure is not limited to this.
  • the light reception voltage average OVA of the optical system may be calculated and the threshold value OTH2 may be read.
  • the present disclosure is not limited to this.
  • the CPU 41 reads out and executes the conveyance state detection program from the memory 42 and configures the conveyance state detection processing unit 153 (FIG. 13) as a functional block in the MPU 141
  • the conveyance state detection processing unit 153 may execute the conveyance state detection processing procedure RT2.
  • the transport state detection processing unit 153 by hardware may be provided in the MPU 141. The same applies to the first and third embodiments.
  • the present disclosure is not limited to this.
  • an optical element such as a mirror or a prism may be disposed on the opposite side of the medium detection substrate 133 with the conveyance space 114S interposed therebetween, and the light emission sensor 144 may be provided on the medium detection substrate 133.
  • detection light may be emitted backward from the light emitting sensor 144, and the traveling direction may be converted forward by a mirror or a prism on the rear side of the conveyance space 114S, and then received by the light receiving sensor 143.
  • a space required on the rear side of the conveyance space 114S can be reduced, which can contribute to downsizing of the discrimination unit 114 and the banknote dispenser 101.
  • the high frequency signal S1 is alternately generated by the respective PLLs 44 between the radio wave detection circuits 240L and 240R.
  • the present disclosure is not limited to this.
  • the high-frequency signal S1 may be generated simultaneously by the PLLs 44 of the radio wave detection circuits 240L and 240R. In this case, it is desirable not to affect each other by appropriately determining the characteristics and arrangement of the antennas 34.
  • the PLL 44 (FIG. 12) is provided in each of the radio wave detection circuits 240L and 240R.
  • the present disclosure is not limited to this.
  • the PLL 44 is omitted from the radio wave detection circuits 240L and 240R, and one PLL 44 is provided on the medium detection board 233 (FIG. 18), and the PLL 44 provides the radio wave detection circuits 240L and 240R.
  • the high-frequency signal S1 may be alternately supplied by time division.
  • the PLL 44 may generate a plurality of types of high-frequency signals having different frequencies while switching them and supply them alternately to the radio wave detection circuits 240L and 240R.
  • the position of the security thread ST is determined using the standard deviation in the light reception voltage S12 of the optical system in the security thread position determination processing (FIG. 20, steps SP31 to SP31). SP35).
  • the present disclosure is not limited to this.
  • the position of the security thread ST may be determined using a standard deviation in the detection voltage S7 of the radio wave system.
  • the position of the security thread ST may be determined using various values calculated based on the detection voltage S7, not limited to the standard deviation.
  • the conveyance state detection process is performed using only the detection signal group obtained from the detection area where the security thread ST is determined not to be positioned by the security thread position determination process.
  • the case was described (FIG. 20).
  • the present disclosure is not limited to this.
  • a weighting coefficient for each of the left detection signal group and the right detection signal group is determined according to the result of the security thread position determination process, and the left and right detection voltages S7 are multiplied by this weighting coefficient.
  • the conveyance state detection processing may be performed by combining the detection voltage S7 obtained from both detection regions, such as using a weighted average value.
  • each component of the radio wave system and each component of the optical system are provided in each of the left detection unit 230L and the right detection unit 230R of the discrimination unit 214 .
  • the present disclosure is not limited to this.
  • each of the left detection unit 230L and the right detection unit 230R may be provided with only radio wave components.
  • the discrimination unit 214 may perform the security thread position determination process using the detection voltage S7 as in the case described above, and after the security thread position determination process ends, the same as in the first embodiment. What is necessary is just to perform a conveyance state detection process (FIG. 10).
  • the conveyance space 214S of the discrimination unit 214 is divided into two in the left-right direction to form a left detection region 214L and a right detection region 214R, and each component of the radio wave system and the optical system is included in each detection region.
  • the case of arranging is described (FIG. 19).
  • the conveyance space 214S may be divided into three or more detection areas in the left-right direction, and radio wave system and optical system components may be arranged in each detection area.
  • this indication is applied to the discrimination part 14 which detects the conveyance state of this banknote.
  • the present disclosure is not limited to this, and the present disclosure may be applied to a discrimination unit that detects a conveyance state of a medium to be conveyed in various apparatuses that handle various paper-like media such as securities and cash vouchers.
  • the present disclosure is not limited to the above-described embodiments and other embodiments. That is, the scope of application of the present disclosure extends to embodiments in which some or all of the above-described embodiments and other embodiments described above are arbitrarily combined, and embodiments in which some are extracted.
  • the conveyance belt 38 and the conveyance bearing 37 as the conveyance unit, the PLL 44 as the high-frequency signal generation unit, the directional coupler 45 as the signal input / output unit, and the antenna The case where the discrimination unit 14 as the medium detection device is configured by the antenna 34, the metal plate 36 as the conductor, the detector 49 as the detection unit, and the CPU 41 as the determination unit has been described.
  • the present disclosure is not limited to this, and a medium detection device is configured by a transport unit, a high-frequency signal generation unit, a signal input / output unit, an antenna, a conductor, a detection unit, and a determination unit having various other configurations. May be.
  • This disclosure can be used with, for example, a banknote dispenser that dispenses banknotes of an amount instructed by the user.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

La présente invention concerne un dispositif de détection de support qui comprend : un chemin de transport sur lequel un support de feuille de papier est transporté; un guide de transport qui forme le chemin de transport et qui guide le support le long de la surface du support; un guide de placement de carte qui fait partie du guide de transport, qui est tourné vers un premier côté face du support à transporter, et qui comporte une antenne en vue d'émettre une onde électromagnétique prescrite sur le support; un guide de conducteur qui fait partie du guide de transport, qui est tourné vers un second côté face du support à transporter, et qui est couplé de manière inductive à l'antenne au moyen des ondes électromagnétiques émises à partir de l'antenne; et une unité de discrimination qui distingue l'état de transport du support passant entre le guide de placement de carte et le guide de conducteur.
PCT/JP2016/088510 2016-02-26 2016-12-22 Dispositif de détection de support et dispositif de traitement de support WO2017145513A1 (fr)

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JP2016036236A JP6617606B2 (ja) 2016-02-26 2016-02-26 媒体検知装置及び媒体処理装置

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113168744A (zh) * 2018-12-05 2021-07-23 三菱电机株式会社 静电电容检测装置及图像读取装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928601A (ja) * 1982-08-10 1984-02-15 Amada Co Ltd 磁性体板の検出方法および装置
JPS63301393A (ja) * 1987-06-02 1988-12-08 グローリー工業株式会社 紙葉類処理機のセキュリティ・スレッド検出装置
JPH10214360A (ja) * 1997-01-30 1998-08-11 S Ii L Kk 金属テープ織り込み紙幣検出装置
JP2000242825A (ja) * 1999-02-09 2000-09-08 Mars Inc 誘導性センサを有する書類確認器
JP2007297192A (ja) * 2006-05-01 2007-11-15 Csc:Kk 重送検知装置
JP2015201163A (ja) * 2014-03-31 2015-11-12 沖電気工業株式会社 媒体処理装置及び媒体取引装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5928601A (ja) * 1982-08-10 1984-02-15 Amada Co Ltd 磁性体板の検出方法および装置
JPS63301393A (ja) * 1987-06-02 1988-12-08 グローリー工業株式会社 紙葉類処理機のセキュリティ・スレッド検出装置
JPH10214360A (ja) * 1997-01-30 1998-08-11 S Ii L Kk 金属テープ織り込み紙幣検出装置
JP2000242825A (ja) * 1999-02-09 2000-09-08 Mars Inc 誘導性センサを有する書類確認器
JP2007297192A (ja) * 2006-05-01 2007-11-15 Csc:Kk 重送検知装置
JP2015201163A (ja) * 2014-03-31 2015-11-12 沖電気工業株式会社 媒体処理装置及び媒体取引装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113168744A (zh) * 2018-12-05 2021-07-23 三菱电机株式会社 静电电容检测装置及图像读取装置

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