WO2016008366A1 - 磁数据读取装置及磁数据读取方法 - Google Patents

磁数据读取装置及磁数据读取方法 Download PDF

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Publication number
WO2016008366A1
WO2016008366A1 PCT/CN2015/083211 CN2015083211W WO2016008366A1 WO 2016008366 A1 WO2016008366 A1 WO 2016008366A1 CN 2015083211 W CN2015083211 W CN 2015083211W WO 2016008366 A1 WO2016008366 A1 WO 2016008366A1
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WIPO (PCT)
Prior art keywords
magnetic data
ticket
magnetic
read
reading
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PCT/CN2015/083211
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English (en)
French (fr)
Inventor
许春凯
王权黎
刘丙庆
董述恂
孙路
Original Assignee
山东新北洋信息技术股份有限公司
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Application filed by 山东新北洋信息技术股份有限公司 filed Critical 山东新北洋信息技术股份有限公司
Priority to US15/323,383 priority Critical patent/US20180174388A1/en
Publication of WO2016008366A1 publication Critical patent/WO2016008366A1/zh

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    • 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
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/087—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors flux-sensitive, e.g. magnetic, detectors
    • 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
    • G07D7/20—Testing patterns thereon

Definitions

  • the present invention relates to the field of magnetic detection technology, and in particular to a magnetic data reading device and a magnetic data reading method.
  • Valuable tickets such as banknotes and checks, contain magnetic substances. It is a common means in the field of ticket authentication to identify the authenticity of tickets by detecting the magnetic substances contained in specific areas of the ticket.
  • the traditional ticket authentication method uses a magnetic head device to detect the presence or absence of a magnetic substance on a ticket to determine the authenticity of the ticket. The problem with this method is that the detection and analysis of the magnetic substance is too simple to effectively distinguish the counterfeit ticket. Therefore, the accuracy of ticket authentication is not high.
  • the existing ticket usually contains a hard magnetic substance and a soft magnetic substance.
  • the fifth set of RMB adds softness based on the hard magnetic anti-counterfeiting feature of the fourth set of RMB.
  • the magnetic anti-counterfeiting feature is mixed with hard magnetic materials and soft magnetic substances in the security line, crown size and magnetic ink of the ticket, and is distributed in a regular pattern.
  • the hard magnetic substance refers to a material that can maintain magnetic properties for a long time after magnetization. When the external magnetic field is removed, the direction of each magnetic domain can still be well consistent, and the hard magnetic substance has strong remanence; the soft magnetic substance refers to After magnetization, the original magnetic material cannot be maintained. When the external magnetic field is removed, the direction of each magnetic domain cannot be consistent, and the soft magnetic material has no obvious remanence.
  • the magnetic induction device includes a magnetic head 1 to which an external magnetic field is applied and a magnetic head 1' to which an external magnetic field is not applied.
  • the magnetic head of the magnetic induction device is arranged in two rows and n columns.
  • the Y direction shown in the figure is the direction of the column, and the induced magnetic substance advances in the Y direction in the magnetic induction device.
  • the two magnetic heads in the same column are the magnetic head 1 and the magnetic head 1 respectively. ', and the order of the two can be arbitrary.
  • the magnetic head 1 senses both the soft magnetic substance and the hard magnetic substance when the induced magnetic substance passes through the magnetic head 1, when the induced magnetic substance passes through the magnetic head 1', the soft magnetic substance is easily demagnetized, and the residual magnetism is small, and hard.
  • the magnetic substance has a large residual magnetization, and the magnetic head 1' has different sensing signals to the soft magnetic substance and the hard magnetic substance. Therefore, regardless of which magnetic head of the magnetic induction device is first passed by the magnetic induction device, the sensing signals generated by the two magnetic heads are Differently, the ticket detecting system including the magnetic sensing device can obtain the soft magnetic image and the hard magnetic image of the ticket by analyzing and processing the sensing signals generated by the two types of magnetic heads, thereby realizing the detection and authentication of the ticket.
  • the related art magnetic induction device requires at least two magnetic heads, which not only increases the structural complexity of the magnetic induction device, but also increases the manufacturing cost of the magnetic induction device to some extent.
  • a primary object of the present invention is to provide a magnetic data reading device and a magnetic data reading method to solve the above problems.
  • a magnetic data reading device for reading magnetic data of a ticket to be read, which mainly comprises: a magnetic head device and a control unit; the magnetic head The device includes a magnetic core and an exciting coil wound on the magnetic core; the control unit is configured to control the excitation coil to be energized for a first preset time, and read when the power-on time reaches the first preset time The first magnetic data of the ticket to be read; the control unit is further configured to control the excitation coil to be powered off for a second preset time, and read when the power off time reaches the second preset time The second magnetic data of the ticket to be read.
  • the magnetic data reading device further includes a power supply and a signal processing circuit
  • the excitation coil includes a first terminal and a second terminal
  • the power supply is connected to the first terminal through a power control switch, wherein a power control switch for responding to a closing/opening control signal sent by the control unit; the signal processing circuit being coupled to the second terminal for transmitting to the control unit under control of the control unit The first magnetic data and the second magnetic data.
  • control unit is configured to control the energization of the excitation coil by controlling the power control switch to close, and start a first timing, and determine, according to the time of the first timing, whether the energization time of the excitation coil reaches the a first preset time; the control unit is configured to control the power coil to turn off the power of the excitation coil by controlling the power control switch, and start a second timing, and determine the break of the excitation coil according to the time of the second timing Whether the electrical time reaches the second preset time.
  • the magnetic data reading device further comprises a transport unit, the transport unit comprising: a ticket transport channel, the magnetic head device forming a sensing area in the ticket transport channel; the transport unit for The ticket to be read is driven to move in the ticket delivery channel under the control of the control unit.
  • the magnetic data reading device further includes a sensor disposed on the ticket transport passage for detecting a positional relationship between the ticket to be read and the sensing area.
  • the magnetic data reading device further includes a storage unit configured to store the first magnetic data and the second magnetic data read by the control unit.
  • control unit is further configured to determine, according to the first magnetic data and the second magnetic data, the ticket to be read after reading the first magnetic data and the second magnetic data The authenticity of the voucher.
  • the embodiment of the present invention further provides a magnetic data reading method for reading a magnetic data reading device, wherein the magnetic data reading device is configured to read magnetic data of a ticket to be read, and the magnetic data reading device includes a magnetic head
  • the magnetic head device includes a magnetic core and an exciting coil wound on the magnetic core
  • the magnetic data reading method includes: controlling the excitation The magnetic coil is energized for a first preset time, and when the power-on time reaches the first preset time, reading the first magnetic data of the ticket to be read; controlling the excitation coil to be powered off for a second preset time And, when the power-off time reaches the second preset time, reading the second magnetic data of the ticket to be read.
  • the reading the first magnetic data and the second magnetic data comprises: detecting a positional relationship between the ticket to be read and a sensing area formed by the magnetic head device; when detecting the to-be-read When the leading edge of the ticket reaches the sensing area, starting reading of the first magnetic data and the second magnetic data; when detecting that the trailing edge of the ticket to be read leaves the sensing area, stopping Reading of the first magnetic data and the second magnetic data.
  • the magnetic data reading method further comprises: reading the first magnetic data and the second magnetic data of the ticket to be read every time the ticket to be read moves by one unit distance .
  • the magnetic data reading method further includes: after reading the first magnetic data of the ticket to be read, storing the first magnetic data; and reading the first to be read the ticket After the two magnetic data, the second magnetic data is stored.
  • the excitation coil is connected to a power supply through a power control switch, and the power coil is controlled to close to control the excitation coil to be energized, and the first timing is started, wherein the determining is performed according to the time of the first timing. Whether the energization time of the exciting coil reaches the first preset time. Controlling the excitation coil to be powered off by controlling the power control switch to open, and starting a second timing, wherein determining whether the power-off time of the excitation coil reaches the second preset according to the second timing time.
  • the magnetic data reading method further comprises: determining the to-be read according to the first magnetic data and the second magnetic data The authenticity of the ticket.
  • the magnetic data reading device and the magnetic data reading method provided by the embodiment of the present invention control the excitation coil to be energized for a first preset time, and when the power-on time reaches the first preset time, read the first ticket to be read.
  • Magnetic data wherein the first magnetic data comprises hard magnetic data and soft magnetic data; controlling the excitation coil to be powered off for a second predetermined time, and when the second predetermined time is powered off, reading the second magnetic data, wherein the second magnetic The data is hard magnetic data. It can be seen that the magnetic data reading device of the embodiment of the present invention only provides one magnetic head device, and realizes the first magnetic data and the second magnetic magnetic field of the ticket by controlling the energization and power-off of the exciting coil in the magnetic head device by time division.
  • the magnetic data reading device of the present invention and the magnetic data reading method only need to provide one magnetic head, which reduces the cost of the magnetic data reading device, and solves the high manufacturing cost of the prior art magnetic sensing device. The problem.
  • FIG. 1 is a schematic structural view of a magnetic induction device in the related art
  • FIG. 2 is a schematic structural view of a magnetic head device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a magnetic head device and a control circuit thereof in an embodiment of the present invention
  • FIG. 4 is a schematic diagram showing the module structure of a magnetic data reading device in an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a magnetic data reading apparatus according to an embodiment of the present invention.
  • FIG. 6 is a flow chart of a magnetic data reading method in an embodiment of the present invention.
  • Fig. 7 is another flow chart of the magnetic data reading method in the embodiment of the present invention.
  • Embodiments of the present invention provide a magnetic data reading device for reading magnetic data of a ticket to be read, the structure of which mainly includes a magnetic head device and a control unit, and the magnetic head device includes a magnetic core and a winding An excitation coil on the magnetic core; the control unit is configured to control the excitation coil to be energized for a first preset time, and when the power-on time reaches the first preset time, read the first magnetic data of the ticket to be read; the control unit further And a second preset time for controlling the excitation coil to be powered off, and reading the second magnetic data of the ticket to be read when the power off time reaches the second preset time.
  • the magnetic data reading device described above only one magnetic head device is provided, and the time division control of the magnetic head device enables reading of the first magnetic data and the second magnetic data of the ticket, thereby reducing the cost of the magnetic data reading device.
  • FIG. 2 is a schematic structural view of a magnetic head device in a magnetic data reading device according to an embodiment of the present invention
  • FIG. 3 is a schematic view of a magnetic head device and a control circuit thereof according to an embodiment of the present invention.
  • the structure and working principle of the magnetic head device will be specifically described below with reference to FIGS. 2 and 3.
  • the magnetic head device includes a magnetic core 10 and an exciting coil 11 wound around the magnetic core 10.
  • the exciting coil 11 includes a first terminal 11a and a second terminal 11b.
  • the first terminal 11a is connected to the power source Vcc via the power source control switch S, and the second terminal 11b is connected to the signal processing circuit 212.
  • the power control switch S When the power control switch S is closed, the power source Vcc is turned on with the exciting coil 11, the current in the exciting coil 11 is passed, and the magnetic field 10 forms a magnetic field at the opening 12; when the power control switch S is turned off, the exciting coil 11 is not present. When the current passes, the magnetic field at the opening 12 formed by the magnetic core 10 disappears.
  • the signal processing circuit 212 receives and processes the electrical signal output by the second terminal 11b, wherein the processing performed by the signal processing circuit 212 on the electrical signal output by the second terminal 11b includes amplification processing, filtering processing, and AD In the conversion processing, the signal processing circuit 212 processes the electrical signal output from the second terminal 11b, and outputs a digital signal obtained by AD conversion at its output terminal T.
  • the exciting coil 11 When the magnetic substance is located at the opening 12 of the magnetic head device, if the power control switch S is in the closed state, the exciting coil 11 has a current, and a magnetic field is generated at the opening 12, at which time the magnetic substance will be magnetized, and the magnetic substance causes the exciting coil 11
  • the second signal 11b outputs a first signal related to the magnetic substance, since the hard magnetic substance and the soft magnetic substance can be magnetized by the magnetic field at the opening 12, the first signal is generated by the hard magnetic substance.
  • the second terminal 11b outputs a second signal related to the magnetic substance. Since the soft magnetic substance is easily demagnetized, the remanence is small, and the hard magnetic substance has a large residual magnetization. Therefore, the second signal is mainly generated. It is the result of a change in inductance caused by a hard magnetic substance.
  • the embodiment of the present invention provides a specific implementation structure of a magnetic data reading device.
  • the magnetic data reading device of the embodiment mainly includes a control unit 20 and magnetic data acquisition. Unit 21 and transport unit 22.
  • the magnetic data acquiring unit 21 includes a magnetic head device 211 and a signal processing circuit 212; the transport unit 22 includes a ticket transport path; and the magnetic head device 211 forms a sensing area in the ticket transport path.
  • the control unit 20 is configured to control the transport unit 22 to drive the ticket to be read to move in the ticket transport path, for example, to control the transport unit 22 to drive the ticket to be read to move into the sensing area formed by the magnetic head device 211.
  • the control unit 20 is further configured to control the excitation coil of the magnetic head device 211 to be energized for a first preset time T1, and when the power-on time reaches the first preset time T1, read the first of the tickets to be read output by the signal processing circuit 212.
  • Magnetic data is configured to control the excitation coil of the magnetic head device 211 to be energized for a first preset time T1, and when the power-on time reaches the first preset time T1, read the first of the tickets to be read output by the signal processing circuit 212.
  • the control unit 20 is further configured to control the excitation coil to be powered off for a second predetermined time T2, and when the power-off time reaches the second preset time T2, read the second magnetic data of the ticket to be read output by the signal processing circuit 212. .
  • the first magnetic data and the second magnetic data may be processed as needed, for example, the first magnetic data and the second magnetic data are used for authenticating the authenticity of the ticket. .
  • the magnetic data acquisition unit 21 is used to acquire the magnetic data on the ticket to be read.
  • the magnetic data acquisition unit 21 includes the magnetic head device 211 and the signal processing circuit 212, and the magnetic head device 211 is as shown in FIGS. 2 and 3.
  • the power supply VCC is connected to the first terminal 11a of the exciting coil 11 via a power control switch S, and the power control switch S responds to the closing/opening control signal sent by the control unit 20, and when the control unit 20 outputs a closing control signal
  • the power control switch S When the power control switch S is closed, a current flows through the exciting coil 11 of the magnetic head device 211, and a magnetic field is generated at the opening 12 formed by the magnetic core 10.
  • the signal processing circuit 212 is connected to the second terminal 11b of the magnetic head device 211 (as shown in FIG. 3), and its output terminal T is electrically connected to the control unit 20.
  • the signal processing circuit 212 receives the signal outputted at the second terminal 11b, The signal is subjected to amplification processing, filtering processing, and AD conversion processing, and the digital magnetic data generated after the AD conversion is output to the control unit 20.
  • the transport unit 22 is configured to drive the ticket to move in the ticket transport path of the magnetic data reading device 200.
  • the transport unit 22 includes a motor driver 221, a transport motor 222, and a transport roller assembly 223.
  • the motor driver 221 is configured to output a current required for the rotation of the output shaft of the conveying motor 222 according to a control command outputted by the control unit 20, and the output shaft of the conveying motor 222 is drivingly coupled to the conveying roller assembly 223, when the output shaft of the conveying motor 222 is rotated, The conveying roller assembly 223 is then rotated to drive the ticket to move in the ticket conveying path.
  • the magnetic data reading apparatus of the embodiment of the present invention further includes a storage unit 23, wherein the storage unit 23 is configured to store the first magnetic data and the second magnetic data read by the control unit 20, and further for storing The control program of the magnetic data reading device 200 and the data and variables generated during the operation of the control program, for example, the storage unit 16 is configured to store the first preset time T1, the second preset time T2, and the like, wherein the first preset The time T1 is a preset time for controlling the closing of the power control switch S for setting the closing time of the power control switch S of the magnetic head device 211, and the second preset time T2 is a preset for controlling the power supply control switch S.
  • the opening time is for setting the off time of the power control switch S of the magnetic head device 211.
  • the magnetic data reading device further includes a sensor 24 disposed on the ticket transport path for detecting the positional relationship between the ticket to be read and the sensing area.
  • the senor 24 may be a photoelectric reflection sensor or a photoelectric transmission sensor including an illuminator and a receiver (not shown), and the receiver receives the light emitted by the illuminator and converts it into an electrical signal when the sensor 24 is at In the covered state, the receiver outputs a first detection signal, and when the sensor 24 is in an uncovered state, the receiver outputs a second detection signal.
  • the change in state of the sensor 24 can be used to indicate the location at which the ticket arrives or leaves the sensor 24, and when the sensor 24 changes from the uncovered state to the covered state, indicating the detected position of the ticket arrival sensor 24, when the sensor 24 is When the coverage state changes to the uncovered state, it indicates that the ticket leaves the detection position of the sensor 24.
  • FIG. 5 is a block diagram showing the structure of a magnetic data reading device according to an embodiment of the present invention. As shown, the ticket M is fed into the ticket transport path of the magnetic data reading device 200 by the inlet P, wherein the direction indicated by the arrow A is It is the conveying direction of the ticket M.
  • the sensor 24 In the conveying direction of the ticket M, the sensor 24 is located upstream of the magnetic head device 211, and the distance between the detected position of the sensor 24 and the center line O of the magnetic head device 211 is L1.
  • the conveying roller assembly 223 includes a conveying roller 2231, a conveying roller 2232, and a conveying roller 2233 which are sequentially arranged in the ticket conveying path in the conveying direction, wherein the magnetic head device 211 is disposed opposite to the conveying roller 2232, and the magnetic core 10 of the magnetic head device 211
  • the formed opening 12 faces the ticket conveying path toward the side of the conveying roller 2232, and the conveying roller 2231 and the conveying roller 2233 include a driving roller and a driven roller which are oppositely disposed, a driving roller of the conveying roller 2231, and a conveying roller 2233.
  • the driving roller and the conveying roller 2232 are both connected to the conveying motor 222. When the output shaft of the conveying motor 222 rotates, the driving roller of the conveying roller 2231, the driving roller of the conveying roller 2233, and the conveying roller 2232 rotate accordingly, thereby driving the ticket.
  • the ticket M moves in the ticket transport path.
  • the ticket M enters through the entrance P and moves in the ticket delivery path.
  • the leading edge of the ticket M in the transport direction (hereinafter referred to as the ticket front) first enters the sensing region R of the magnetic head device 211, as shown in FIG. 5, the sensing region of the magnetic head device 211 R is a fixed area indicated by the shaded portion in the ticket transport path.
  • the magnetic head device 211 can read the magnetic data of the ticket M related to the magnetic substance, and the sensing region R of the magnetic head device 211 is in the ticket conveying direction.
  • the length is L2, and it is known from the symmetry of the magnetic field that the sensing region R of the magnetic head device 211 is axisymmetric with respect to the center line O of the magnetic head device 211, as the ticket M moves in the ticket conveying path, when the ticket M is in the conveying direction After the trailing edge (hereinafter referred to as the trailing edge of the ticket) leaves the sensing region R of the magnetic head device 211, the magnetic head device 211 will not be able to read the magnetic data on the ticket M.
  • the embodiment of the present invention further provides a magnetic data reading method of a magnetic data reading device, wherein the magnetic data reading device is configured to read magnetic data of a ticket to be read, and the magnetic data reading device includes a magnetic head device.
  • the magnetic head device includes a magnetic core and an exciting coil wound on the magnetic core.
  • the main processing steps of the magnetic data reading method of this embodiment include:
  • Step S201 the excitation coil is controlled to be energized for a first preset time, and when the power-on time reaches the first preset time, the first magnetic data of the ticket to be read is read.
  • Controlling the excitation coil to be energized for example, controlling the power coil to control the energization of the excitation coil, and starting the first timing, determining whether the energization time of the excitation coil reaches the first preset time according to the time of the first timing, and the energization time of the excitation coil When the first preset time is reached, the first magnetic data of the ticket to be read is read.
  • Step S202 controlling the excitation coil to be powered off for a second preset time, and reading the second magnetic data of the ticket to be read when the power-off time reaches the second preset time.
  • Controlling the excitation coil to be de-energized for example, controlling the power control switch to open and control the excitation coil to be powered off, and starting the second timing, determining whether the power-off time of the excitation coil reaches the second preset time according to the second timing time, in the excitation coil When the power-off time reaches the second preset time, the second magnetic data of the ticket to be read is read.
  • the magnetic data reading method of the embodiment of the invention realizes reading of the first magnetic data and the second magnetic data of the ticket by controlling the energization and power-off of the magnetic head device by time division, and the method only needs one magnetic head device, This can reduce the cost of the magnetic data reading device.
  • the validity of the first magnetic data and the second magnetic data acquired by the magnetic data reading device may be relatively low, and the efficiency of the data processing is improved in order to improve the validity of the acquired magnetic data.
  • the reading of the first magnetic data and the second magnetic data is performed when a part or all of the ticket to be read is controlled to move to the set sensing area.
  • the specific implementation method is: detecting a positional relationship between the ticket to be read and the sensing area formed by the magnetic head device; and when detecting that the leading edge of the ticket to be read reaches the sensing area, starting reading of the first magnetic data and the second magnetic data Taking the reading of the first magnetic data and the second magnetic data includes: controlling the excitation coil to be energized for a first preset time, and reading the first ticket to be read when the power-on time reaches the first preset time Magnetic data, controlling the excitation coil to be powered off for a second preset time, and reading the second magnetic data of the ticket to be read when the power off time reaches the second preset time; when detecting the ticket to be read When the sensing area is separated, the reading of the first magnetic data and the second magnetic data is stopped. Thereby, it is possible to perform reading of the first magnetic data and the second magnetic data when part or all of the ticket to be read is located in the set sensing area, and therefore, the effectiveness of the acquired magnetic data can be improved.
  • a specific method for implementing the first magnetic data reading in the embodiment of the present invention is: the control unit sends the first control signal to close the power control switch S, and starts the first timing.
  • the power control switch S When the power control switch S is closed, the power source Vcc is turned on with the exciting coil, the exciting coil has a current, and a magnetic field is generated at the opening formed by the magnetic core of the magnetic head device. Since the opening formed by the magnetic core of the magnetic head device is located in the ticket transport passage, when the ticket is located in the sensing area, the magnetic substance in the ticket is magnetized; when the first timing reaches the first preset time T1, the control unit reads The digital magnetic data output by the magnetic data acquisition unit is stored in the memory unit, that is, the first magnetic data of the ticket is read and stored in the storage unit.
  • the generation of the first magnetic data is a hard magnetic substance located in the sensing region of the magnetic head device causing a change in current in the exciting coil and a softening in the sensing region of the magnetic head device.
  • the magnetic substance causes a superposition of current variations in the exciting coil, that is, the first magnetic data includes hard magnetic data and soft magnetic data.
  • the specific method of reading the second magnetic data is: the control unit sends the second control signal to disconnect the power control switch S, and starts the second timing.
  • the power supply control switch S is turned off, the power supply Vcc is disconnected from the exciting coil, no current flows through the exciting coil, and the magnetic field at the opening formed by the magnetic core of the magnetic head device disappears. After the magnetic field disappears, the soft magnetic material on the ticket is demagnetized.
  • the control unit reads the digital magnetic data output by the magnetic data acquiring unit and stores it in the storage unit, that is, reads the second magnetic data of the ticket and stores it to In the storage unit.
  • the second magnetic data is generated mainly by the hard magnetic substance located in the sensing region of the magnetic head device to cause the exciting coil. As a result of the current change, that is, the second magnetic data is hard magnetic data.
  • the first magnetic data and the second magnetic data may be performed as needed For example, the authenticity of the ticket is determined by using the first magnetic data and the second magnetic data.
  • step S201 and step S202 in this embodiment may be arbitrary, that is, step S201 may be performed first, and then step S202 may be performed, or step S202 may be performed first, and then step S201 is performed.
  • the number of the ticket to be read may be read every time the ticket to be read moves by one unit distance A magnetic data and a second magnetic data.
  • the magnetic data reading method of the embodiment of the present invention controls the energization and de-energization of the excitation coil of the magnetic head device in the magnetic data reading device by time division, and separately reads the magnetic data of the ticket when the excitation coil is energized and de-energized,
  • the separation of the hard magnetic data of the ticket is realized, and the magnetic data reading device can obtain the soft magnetic data of the ticket by analyzing and processing the first magnetic data and the second magnetic data, thereby utilizing the hard magnetic data and the soft magnetic
  • the data is used for counterfeiting of the ticket.
  • the solution only needs to provide one magnetic head, which solves the problem of high manufacturing cost of the prior art magnetic induction device.
  • the method includes the following steps:
  • Step S301 driving the ticket to move in the ticket delivery channel, so that the leading edge of the ticket reaches the sensing area of the magnetic head device
  • the control unit controls the conveying unit to drive the ticket to move in the ticket conveying passage, and detects the state of the sensor during the movement of the ticket, and determines that the leading edge of the ticket reaches the sensor when detecting that the sensor changes from the uncovered state to the covered state Detecting the position, at this time, the control conveying unit continues to drive the ticket movement, and starts recording the distance of the ticket movement.
  • the control unit determines that the leading edge of the ticket reaches the sensing area of the magnetic head device. . As can be seen from FIG.
  • the ticket continues to move the distance (L1-L2/2), and the leading edge of the ticket reaches the sensing area of the magnetic head device, that is, the first preset value can be set to ( L1-L2/2), when the distance moved by the ticket is greater than the first preset value, it is determined that the leading edge of the ticket enters the sensing area of the magnetic head device.
  • L1 is the distance from the detection position of the sensor to the center line of the magnetic head device
  • L2 is the length of the sensing area of the magnetic head device in the direction in which the ticket is transported.
  • the control unit records the distance moved by the ticket by: when the conveying motor of the conveying unit is a stepping motor, the control unit records the number of steps of the stepping motor, according to the stepping number of the stepping motor and the stepping motor The distance that the ticket moves in the ticket transport channel when stepping once calculates the distance moved by the ticket; when the transport motor of the transport unit is a DC motor, the control unit records the rotation angle of the DC motor, according to the rotation angle of the DC motor and the DC motor The distance moved by the ticket in the ticket transport path when the minimum angle is rotated is calculated as the distance moved by the ticket.
  • Step S302 controlling the excitation coil to be energized for a first preset time T1, reading and storing the first magnetic number on the ticket according to
  • This step is specifically performed in the same manner as step S201.
  • Step S303 controlling the excitation coil to be powered off for a second preset time T2, and reading and storing the second magnetic data on the ticket.
  • This step is specifically performed in the same manner as step S202.
  • Step S304 driving the ticket to move by one unit distance and detecting the state of the sensor
  • the control unit controls the conveying motor to drive the ticket to move by one unit distance.
  • the control unit controls the stepping motor step further.
  • the control unit controls the DC motor to rotate by a minimum angle. .
  • the control unit detects the state of the sensor each time the ticket moves by one unit distance.
  • Step S305 determining whether the trailing edge of the ticket leaves the detection position of the sensor.
  • the control unit determines whether the trailing edge of the ticket leaves the detection position of the sensor according to the state of the sensor, and when detecting that the sensor changes from the covered state to the uncovered state, determines that the trailing edge of the ticket starts to leave the detecting position of the sensor, or when detecting When the ticket moves two units away from the sensor in the process of being continuously uncovered, it is determined that the trailing edge of the ticket has left the detection position of the sensor.
  • step S306 is performed; otherwise, step S302 is continued.
  • Step S306 recording the distance moved by the ticket after the ticket trailing edge leaves the detection position of the sensor, and determining whether the trailing edge of the ticket leaves the sensing area of the magnetic head device.
  • the control unit determines that the trailing edge of the ticket starts to leave the detection position of the sensor
  • the control unit starts recording the distance moved by the ticket, that is, the control unit records the distance that the ticket moves after leaving the detected position of the ticket, and the ticket is moved.
  • the distance moved is compared with a second preset value to determine whether the trailing edge of the ticket leaves the sensing area of the head device.
  • the ticket continues to move the distance (L1+L2/2), and the trailing edge of the ticket leaves the sensing area of the magnetic head device, that is, the second preset value can be set.
  • L1 is the distance from the detection position of the sensor to the center line of the magnetic head device
  • L2 is the length of the sensing area of the magnetic head device in the direction in which the ticket is transported.
  • step S302 is continued.
  • the first magnetic data and the second magnetic data of the ticket located in the sensing area of the magnetic head device are respectively acquired when the ticket moves by one unit distance, thereby realizing the acquisition when the entire ticket passes through the sensing area of the magnetic head device.
  • the magnetic data reading method of the present invention is not limited to the above embodiment.
  • the present invention can also acquire the magnetic data of the entire ticket in an asynchronous manner, that is, the ticket transportation and the magnetic data reading are two independent processes, and the conveying motor
  • the driving ticket moves in the ticket conveying passage, and when the leading edge of the ticket is detected to reach the sensing area of the magnetic head device, the magnetic data reading is started, and when the ticket is detected, the magnetic data reading is stopped when leaving the sensing area of the magnetic head device
  • the magnetic data reading device of the embodiment of the present invention can perform the reading of the magnetic data of the ticket by using the method shown in FIG. 6, that is, controlling the excitation coil to be energized for a first preset time, and reaching the first preset at the power-on time. Reading time, reading the first magnetic data of the ticket to be read, controlling the excitation coil to be powered off for a second preset time, and reading the second ticket to be read when the power off time reaches the second preset time Magnetic data.

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Abstract

一种磁数据读取装置及磁数据读取方法。磁数据读取装置包括：磁头装置（211）及控制单元（20）；磁头装置（211）包括磁芯（10）及缠绕在磁芯（10）上的励磁线圈（11）；控制单元（20）用于控制励磁线圈（11）通电第一预设时间（T1）且在通电时间到达第一预设时间（T1）时，读取待读取票券的第一磁数据；还用于控制励磁线圈（11）断电第二预设时间（T2）且在断电时间到达第二预设时间（T2）时，读取待读取票券的第二磁数据。该磁数据读取装置及磁数据读取方法只需设置一个磁头，降低了磁数据读取装置的成本，解决了现有技术磁感应装置制造成本较高的问题。

Description

磁数据读取装置及磁数据读取方法 技术领域
本发明涉及磁检测技术领域，具体而言，涉及磁数据读取装置及磁数据读取方法。
背景技术
有价票券，比如纸币、支票，均包含有磁性物质，通过检测票券特定区域所包含的磁性物质来鉴别票券的真伪是票券鉴伪领域的常用手段。传统的票券鉴伪方法是使用磁头装置检测票券上是否存在磁性物质从而判断票券的真伪，这种方法的问题在于对磁性物质的检测分析过于简单，不能有效分辨出仿造的票券，因此，票券鉴伪的准确性不高。
为了提高票券的防伪特性，现有的票券中通常包含有硬磁性物质和软磁性物质，比如，第五套人民币在延续第四套人民币所具有的硬磁性防伪特征的基础上增加了软磁性防伪特征，在票券的安全线、冠字号及磁性油墨等处混合有硬磁性物质和软磁性物质，并呈一定规律分配。其中，硬磁性物质是指磁化后能长久保持磁性的材料，当外磁场撤去后，各磁畴的方向仍能很好地保持一致，硬磁性物质具有很强的剩磁；软磁性物质是指磁化后不能保持原有磁性的材料，当外磁场撤去后，各磁畴的方向不能保持一致，软磁性物质没有明显的剩磁。
图1是相关技术中磁感应装置的结构示意图。从图中可以看出该磁感应装置包括被施加外磁场的磁头1和未被施加外磁场的磁头1'。磁感应装置的磁头采用两行n列的形式排列，图中所示Y方向为列的方向，被感应磁性物质在磁感应装置中沿Y方向前进，同一列的两个磁头分别为磁头1和磁头1'，并且二者的次序可以任意。由于当被感应磁物质经过磁头1时，磁头1对软磁性物质和硬磁性物质均有感应，当被感应磁物质经过磁头1'时，软磁性物质极易退磁，剩磁很少，而硬磁性物质则具有较大的剩磁，磁头1'对软磁性物质和硬磁性物质的感应信号不同，因此，无论被感应磁物质先经过磁感应装置的哪种磁头，两种磁头产生的感应信号均不相同，包含该磁感应装置的票券检测系统通过对两种磁头产生的感应信号进行分析处理，即可得到票券的软磁图像和硬磁图像，从而实现票券的检测和鉴伪。
然而，相关技术的磁感应装置需要设置至少两个磁头，这不但增加了磁感应装置的结构复杂程度，而且在一定程度上增加了磁感应装置的制造成本。
针对相关技术中磁感应装置制造成本较高的问题，目前尚未提出有效的解决方法。
发明内容
本发明的主要目的在于提供一种磁数据读取装置及磁数据读取方法，以解决上述的问题。
在本发明的实施例中提供了一种磁数据读取装置，所述磁数据读取装置用于读取待读取票券的磁数据，其主要包括：磁头装置及控制单元；所述磁头装置包括磁芯及缠绕在所述磁芯上的励磁线圈；所述控制单元用于控制所述励磁线圈通电第一预设时间，且在通电时间到达所述第一预设时间时，读取所述待读取票券的第一磁数据；所述控制单元还用于控制所述励磁线圈断电第二预设时间，且在断电时间到达所述第二预设时间时，读取所述待读取票券的第二磁数据。
优选地，所述磁数据读取装置还包括供电电源及信号处理电路，所述励磁线圈包括第一端子及第二端子；所述供电电源通过电源控制开关与所述第一端子连接，其中所述电源控制开关用于响应所述控制单元发送的闭合/断开控制信号；所述信号处理电路与所述第二端子连接，用于在所述控制单元的控制下，向所述控制单元发送所述第一磁数据及所述第二磁数据。
优选地，所述控制单元用于通过控制所述电源控制开关闭合控制所述励磁线圈通电，并启动第一计时，根据所述第一计时的时间判断所述励磁线圈的通电时间是否到达所述第一预设时间；所述控制单元用于通过控制所述电源控制开关断开控制所述励磁线圈断电，并启动第二计时，根据所述第二计时的时间判断所述励磁线圈的断电时间是否到达所述第二预设时间。
优选地，所述磁数据读取装置还包括输送单元，所述输送单元包括：票券输送通道，所述磁头装置在所述票券输送通道中形成感应区域；所述输送单元，用于在所述控制单元的控制下，驱动所述待读取票券在所述票券输送通道中移动。
优选地，所述磁数据读取装置还包括传感器，所述传感器设置在所述票券输送通道上，用于检测所述待读取票券与所述感应区域的位置关系。
优选地，所述磁数据读取装置还包括存储单元，所述存储单元用于存储所述控制单元读取的所述第一磁数据及所述第二磁数据。
优选地，所述控制单元还用于在读取所述第一磁数据和所述第二磁数据之后根据所述所述第一磁数据和所述第二磁数据判断所述待读取票券的真伪。
本发明实施例还提供了一种磁数据读取装置的磁数据读取方法，所述磁数据读取装置用于读取待读取票券的磁数据，所述磁数据读取装置包括磁头装置，所述磁头装置包括磁芯及缠绕在所述磁芯上的励磁线圈，所述磁数据读取方法包括：控制所述励 磁线圈通电第一预设时间，且在通电时间到达所述第一预设时间时，读取所述待读取票券的第一磁数据；控制所述励磁线圈断电第二预设时间，且在断电时间到达所述第二预设时间时，读取所述待读取票券的第二磁数据。
优选地，读取所述第一磁数据及所述第二磁数据包括：检测所述待读取票券与所述磁头装置所形成的感应区域的位置关系；当检测到所述待读取票券的前沿到达所述感应区域时，启动所述第一磁数据及所述第二磁数据的读取；当检测到所述待读取票券的后沿离开所述感应区域时，停止所述第一磁数据及所述第二磁数据的读取。
优选地，所述磁数据读取方法还包括：所述待读取票券每移动一个单位距离时，读取所述待读取票券的所述第一磁数据和所述第二磁数据。
优选地，所述磁数据读取方法还包括：读取所述待读取票券的第一磁数据后，对所述第一磁数据进行存储；读取所述待读取票券的第二磁数据后，对所述第二磁数据进行存储。
优选地，所述励磁线圈通过电源控制开关与供电电源连接，通过控制所述电源控制开关闭合控制所述励磁线圈通电，并启动第一计时，其中，根据所述第一计时的时间判断所述励磁线圈的通电时间是否到达所述第一预设时间。通过控制所述电源控制开关断开控制所述励磁线圈断电，并启动第二计时，其中，根据所述第二计时的时间判断所述励磁线圈的断电时间是否到达所述第二预设时间。
优选地，在读取所述第一磁数据和所述第二磁数据之后，所述磁数据读取方法还包括：根据所述第一磁数据和所述第二磁数据判断所述待读取票券的真伪。
本发明实施例提供的磁数据读取装置及磁数据读取方法，控制励磁线圈通电第一预设时间，且在通电时间到达第一预设时间时，读取待读取票券的第一磁数据，其中第一磁数据包括硬磁数据和软磁数据；控制励磁线圈断电第二预设时间，且在断电第二预设时间时，读取第二磁数据，其中第二磁数据为硬磁数据。由此看出，本发明实施例的磁数据读取装置仅设置一个磁头装置，通过分时控制该磁头装置中励磁线圈的通电和断电，实现了票券的第一磁数据及第二磁数据的读取。与现有技术相比，本发明的磁数据读取装置及实施该磁数据读取方法只需设置一个磁头，降低了磁数据读取装置的成本，解决了现有技术磁感应装置制造成本较高的问题。
附图说明
构成本申请的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是相关技术中磁感应装置的结构示意图；
图2是本发明实施例中磁头装置的结构示意图；
图3是本发明实施例中磁头装置及其控制电路的示意图；
图4是本发明实施例中磁数据读取装置的模块组成示意图；
图5是本发明实施例中磁数据读取装置的结构示意图；
图6是本发明实施例中磁数据读取方法的一种流程图；以及
图7是本发明实施例中磁数据读取方法的另一种流程图。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
本发明实施例提供了一种磁数据读取装置，该磁数据读取装置用于读取待读取票券的磁数据，其结构主要包括磁头装置及控制单元，磁头装置包括磁芯及缠绕在磁芯上的励磁线圈；控制单元用于控制励磁线圈通电第一预设时间，且在通电时间到达第一预设时间时，读取待读取票券的第一磁数据；控制单元还用于控制励磁线圈断电第二预设时间，且在断电时间到达第二预设时间时，读取待读取票券的第二磁数据。
上述的磁数据读取装置中仅设置一个磁头装置，通过对磁头装置的分时控制实现了对票券第一磁数据及第二磁数据的读取，降低了磁数据读取装置的成本。
图2是本发明实施例的磁数据读取装置中磁头装置的结构示意图，图3是本发明实施例的磁头装置及其控制电路的示意图。以下结合图2和图3具体说明磁头装置的结构及工作原理。
如图2所示，磁头装置包括磁芯10及缠绕在磁芯10上的励磁线圈11，其中励磁线圈11包括第一端子11a及第二端子11b。如图3所示，第一端子11a经过电源控制开关S与电源Vcc连接，第二端子11b与信号处理电路212连接。
当电源控制开关S闭合时，电源Vcc与励磁线圈11接通，励磁线圈11中有电流通过，磁芯10形成的开口12处产生磁场；当电源控制开关S断开时，励磁线圈11中没有电流通过，磁芯10形成的开口12处的磁场消失。
信号处理电路212接收第二端子11b输出的电信号并对其进行处理，其中，信号处理电路212对第二端子11b输出的电信号进行的处理包括放大处理、滤波处理和AD 转换处理，信号处理电路212对第二端子11b输出的电信号进行处理后，在其输出端T处输出经过AD转换后得到的数字信号。
当磁性物质位于磁头装置的开口12处时，如果电源控制开关S处于闭合状态，励磁线圈11有电流通过，开口12处产生磁场，此时，磁性物质将被磁化，磁性物质引起励磁线圈11的电感量的变化，第二端子11b处输出与磁性物质相关的第一信号，由于硬磁性物质和软磁性物质均可被开口12处的磁场磁化，因此，第一信号的产生是硬磁性物质引起电感变化和软磁性物质引起电感变化叠加的结果；如果电源控制开关S处于断开状态，励磁线圈11中没有电流通过，开口12处没有磁场产生，此时，磁性物质引起励磁线圈11的电感量的变化，第二端子11b处输出与磁性物质相关的第二信号，由于软磁性物质极易退磁，剩磁很小，而硬磁性物质具有较大的剩磁，因此，第二信号的产生主要是硬磁性物质引起电感变化的结果。
基于上述磁数据读取原理，本发明实施例提供了一种磁数据读取装置的具体实现结构，如图4所示，该实施例的磁数据读取装置主要包括控制单元20、磁数据获取单元21及输送单元22。
磁数据获取单元21包括磁头装置211及信号处理电路212；输送单元22包括票券输送通道；磁头装置211在票券输送通道中形成感应区域。控制单元20用于控制输送单元22驱动待读取票券在票券输送通道中移动，例如控制输送单元22驱动待读取票券移动到磁头装置211所形成的感应区域内。控制单元20还用于控制磁头装置211的励磁线圈通电第一预设时间T1，且在通电时间到达第一预设时间T1时，读取信号处理电路212输出的待读取票券的第一磁数据。控制单元20还用于控制励磁线圈断电第二预设时间T2，且在断电时间达到第二预设时间T2时，读取信号处理电路212输出的待读取票券的第二磁数据。
控制单元20获取第一磁数据及第二磁数据后，可根据需要对第一磁数据及第二磁数据进行处理，例如利用第一磁数据及第二磁数据进行票券真伪的鉴别等。
上述装置中，利用磁数据获取单元21获取待读取票券上的磁数据，如上所述，磁数据获取单元21包括磁头装置211、信号处理电路212，磁头装置211为图2和图3所示形式的磁头装置，供电电源VCC与励磁线圈11的第一端子11a通过电源控制开关S连接，电源控制开关S响应控制单元20发送的闭合/断开控制信号，当控制单元20输出闭合控制信号时，电源控制开关S闭合，磁头装置211的励磁线圈11中有电流通过，磁芯10形成的开口12处产生磁场；当控制单元20输出断开控制信号时，电源控制开关S断开，励磁线圈11中没有电流通过，磁芯10形成的开口12处没有磁场产生。信号处理电路212与磁头装置211的第二端子11b连接(如图3所示)，其输出端T与控制单元20电连接。信号处理电路212接收第二端子11b处输出的信号，对该 信号进行放大处理、滤波处理和AD转换处理，并将经过AD转换后生成的数字磁数据输出至控制单元20。
输送单元22，用于驱动票券在磁数据读取装置200的票券输送通道中移动，输送单元22包括电机驱动器221、输送电机222、输送辊组件223。电机驱动器221用于根据控制单元20输出的控制指令输出输送电机222的输出轴转动所需要的电流，输送电机222的输出轴与输送辊组件223传动连接，当输送电机222的输出轴转动时，输送辊组件223随之转动，从而驱动票券在票券输送通道中移动。
如图4所示，本发明实施例的磁数据读取装置还包括存储单元23，其中存储单元23用于存储控制单元20读取的第一磁数据及第二磁数据，进一步还用于存储磁数据读取装置200的控制程序及控制程序运行过程中生成的数据和变量，比如，存储单元16用于存储第一预设时间T1、第二预设时间T2等，其中，第一预设时间T1为预先设置的用于控制电源控制开关S闭合的时间，用于设置磁头装置211的电源控制开关S的闭合时间，第二预设时间T2为预先设置的用于控制电源控制开关S断开的时间，用于设置磁头装置211的电源控制开关S的断开时间。
如图4所示，磁数据读取装置中还包括传感器24，传感器24设置在票券输送通道上，用于检测待读取票券与感应区域的位置关系。
优选地，传感器24可以为光电反射传感器或光电透射传感器，其包括发光器和接收器(图中未标出)，接收器接收发光器发射的光并将其转化为电信号，当传感器24处于被覆盖状态时，接收器输出第一检测信号，当传感器24处于不被覆盖状态时，接收器输出第二检测信号。传感器24的状态变化可以用于指示票券到达或离开传感器24的检测位置，当传感器24由不被覆盖状态变化到被覆盖状态时，表明票券到达传感器24的检测位置，当传感器24由被覆盖状态变化到不被覆盖状态时，表明票券离开传感器24的检测位置。
图5是根据本发明实施例的磁数据读取装置的结构示意图，如图所示，票券M由入口P被送入磁数据读取装置200的票券输送通道，其中箭头A所示方向为票券M的输送方向。
沿票券M的输送方向，传感器24位于磁头装置211的上游，且传感器24的检测位置与磁头装置211的中心线O之间的距离为L1。
输送辊组件223包括沿输送方向依次排布在票券输送通道中的输送辊2231、输送辊2232和输送辊2233，其中，磁头装置211与输送辊2232相对设置，且磁头装置211的磁芯10形成的开口12面向输送辊2232一侧位于票券输送通道中，输送辊2231和输送辊2233包括相对设置的主动辊和从动辊，输送辊2231的主动辊、输送辊2233 的主动辊，以及输送辊2232均与输送电机222传动连接，输送电机222的输出轴转动时，输送辊2231的主动辊、输送辊2233的主动辊，以及输送辊2232随之转动，从而驱动票券M在票券输送通道中移动。
票券处理过程中，票券M由入口P进入并在票券输送通道中移动。随着票券M在票券输送通道中移动，票券M在输送方向上的前沿(以下简称票券前沿)首先进入磁头装置211的感应区域R，如图5所示，磁头装置211的感应区域R是指票券输送通道中阴影部分所示的一段固定区域。
当票券M上的磁性物质位于磁头装置211的感应区域R时，磁头装置211可以读取票券M的与该磁性物质相关的磁数据，磁头装置211的感应区域R沿票券输送方向的长度为L2，由磁场的对称性可知磁头装置211的感应区域R相对于磁头装置211的中心线O轴对称，随着票券M在票券输送通道中移动，当票券M在输送方向上的后沿(以下简称票券后沿)离开磁头装置211的感应区域R后，磁头装置211将不能读取票券M上的磁数据。
本发明实施例还提供了一种磁数据读取装置的磁数据读取方法，其中磁数据读取装置用于读取待读取票券的磁数据，该磁数据读取装置包括磁头装置，磁头装置包括磁芯及缠绕在磁芯上的励磁线圈，如图6所示，该实施例的磁数据读取方法的主要处理步骤包括：
步骤S201，控制励磁线圈通电第一预设时间，且在通电时间到达第一预设时间时，读取待读取票券的第一磁数据。
控制励磁线圈通电，例如，通过控制电源控制开关闭合控制励磁线圈通电，并启动第一计时，根据第一计时的时间判断励磁线圈的通电时间是否到达第一预设时间，在励磁线圈的通电时间到达第一预设时间时，读取待读取票券的第一磁数据。
步骤S202，控制励磁线圈断电第二预设时间，且在断电时间到达第二预设时间时，读取待读取票券的第二磁数据。
控制励磁线圈断电，例如，控制电源控制开关断开控制励磁线圈断电，并启动第二计时，根据第二计时的时间判断励磁线圈的断电时间是否到达第二预设时间，在励磁线圈的断电时间到达第二预设时间时，读取待读取票券的第二磁数据。
本发明实施例的磁数据读取方法，通过分时控制磁头装置的通电及断电，实现了票券第一磁数据及第二磁数据的读取，实现该方法仅需一个磁头装置，由此能够使降低磁数据读取装置的成本。
上述的磁数据读取方法中，当待读取票券在票券输送通道中移动，且待读取票券 未移动到设定的感应区域内时，磁数据读取装置获取的第一磁数据及第二磁数据有效性可能相对较低，为提高获取的磁数据的有效性，提供数据处理的效率，优选地，当控制待读取票券的部分或全部移动到设定的感应区域时进行第一磁数据及第二磁数据的读取。
具体实现方法为，检测待读取票券与磁头装置所形成的感应区域的位置关系；当检测到待读取票券的前沿到达感应区域时，启动第一磁数据及第二磁数据的读取，其中，第一磁数据及第二磁数据的读取包括：控制励磁线圈通电第一预设时间，且在通电时间到达第一预设时间时，读取待读取票券的第一磁数据，控制励磁线圈断电第二预设时间，且在断电时间到达第二预设时间时，读取待读取票券的第二磁数据；当检测到待读取票券的后沿离开感应区域时，停止第一磁数据及第二磁数据的读取。由此可以实现当待读取票券的部分或全部位于设定的感应区域时，进行第一磁数据及第二磁数据的读取，因此，可以提高获取的磁数据的有效性。
以下将结合磁数据读取装置的结构，对本发明实施例中进行第一磁数据及第二磁数据读取的方法进行详细说明：
本发明实施例中实现第一磁数据读取的具体方法为：控制单元发送第一控制信号使电源控制开关S闭合，并启动第一计时。当电源控制开关S闭合时，电源Vcc与励磁线圈接通，励磁线圈有电流通过，磁头装置的磁芯形成的开口处产生磁场。由于磁头装置的磁芯形成的开口位于票券输送通道中，当票券位于感应区域时，票券中的磁性物质被磁化；当第一计时到达第一预设时间T1时，控制单元读取磁数据获取单元输出的数字磁数据并将其存储到存储器单元中，即读取票券的第一磁数据并将其存储到存储单元中。由于位于磁头装置的感应区域的票券的磁性物质被磁化，因此，第一磁数据的产生是位于磁头装置的感应区域的硬磁性物质引起励磁线圈中电流变化和位于磁头装置的感应区域的软磁性物质引起励磁线圈中电流变化叠加的结果，即，第一磁数据包括硬磁数据和软磁数据。
读取第二磁数据的具体方法为：控制单元发送第二控制信号使电源控制开关S断开，并启动第二计时。当电源控制开关S断开时，电源Vcc与励磁线圈之间断开，励磁线圈中没有电流通过，磁头装置的磁芯形成的开口处的磁场消失。磁场消失后，票券上的软磁性物质退磁。当第二计时到达第二预设时间T2时，控制单元读取磁数据获取单元输出的数字磁数据并将其存储到存储单元中，即读取票券的第二磁数据并将其存储到存储单元中。由于票券上的软磁性物质退磁后剩磁很小，而硬磁性物质具有较大的剩磁，因此，第二磁数据的产生主要是位于磁头装置的感应区域的硬磁性物质引起励磁线圈中电流变化的结果，即，第二磁数据为硬磁数据。
得到第一磁数据及第二磁数据后，可根据需要对第一磁数据及第二磁数据进行处 理，例如利用第一磁数据及第二磁数据判断票券的真伪。
需要说明的是，本实施例中步骤S201和步骤S202的执行顺序可以是任意的，即可以先执行步骤S201，再执行步骤S202，也可以先执行步骤S202，再执行步骤S201。
进一步地，当待读取票券在票券输送通道中移动且票券的部分或全部位于感应区域时，可在待读取票券每移动一个单位距离时，读取待读取票券的第一磁数据和第二磁数据。
本发明实施例的磁数据读取方法，通过分时控制磁数据读取装置中磁头装置的励磁线圈的通电和断电，并在励磁线圈通电和断电时分别读取票券的磁数据，实现了票券的硬磁数据的分离，磁数据读取装置通过对第一磁数据和第二磁数据进行分析处理，即可得到票券的软磁数据，从而可以利用硬磁数据和软磁数据进行票券的鉴伪。与现有技术相比，本方案只需设置一个磁头，解决了现有技术的磁感应装置制造成本较高的问题。
本发明实施例还提供了磁数据读取方法的另一优选实施例，如图7所示，该方法包括以下步骤：
步骤S301，驱动票券在票券输送通道中移动，使票券前沿到达磁头装置的感应区域
控制单元控制输送单元驱动票券在票券输送通道中移动，并在票券移动过程中检测传感器的状态，当检测到传感器由不被覆盖状态变化到被覆盖状态时，判定票券前沿到达传感器的检测位置，此时，控制输送单元继续驱动票券移动，并开始记录票券移动的距离，当票券移动的距离到达第一预设值时，控制单元判定票券前沿到达磁头装置的感应区域。由图5可知，当票券的前沿到达传感器的检测位置时，票券继续移动距离(L1-L2/2)，票券前沿到达磁头装置的感应区域，即第一预设值可设置为(L1-L2/2)，当票券移动的距离大于第一预设值时判定票券前沿进入磁头装置的感应区域。其中，L1为传感器的检测位置到磁头装置的中心线的距离，L2为磁头装置的感应区域沿票券输送方向的长度。
优选地，控制单元通过以下方式记录票券移动的距离：当输送单元的输送电机为步进电机时，控制单元记录步进电机的步进次数，根据步进电机的步进次数及步进电机步进一次时票券在票券输送通道中移动的距离计算票券移动的距离；当输送单元的输送电机为直流电机时，控制单元记录直流电机的转动角度，根据直流电机的转动角度及直流电机转动一个最小角度时票券在票券输送通道中移动的距离计算票券移动的距离。
步骤S302，控制励磁线圈通电第一预设时间T1，读取并存储票券上的第一磁数 据
该步骤具体执行方法同步骤S201。
步骤S303，控制励磁线圈断电第二预设时间T2，读取并存储票券上的第二磁数据
该步骤具体执行方法同步骤S202。
步骤S304，驱动票券移动一个单位距离并检测传感器的状态
控制单元控制输送电机驱动票券移动一个单位距离，比如，当输送电机为步进电机时，控制单元控制步进电机步进一步，当输送电机为直流电机时，控制单元控制直流电机转动一个最小角度。票券每移动一个单位距离时，控制单元检测传感器的状态。
步骤S305，判断票券后沿是否离开传感器的检测位置
控制单元根据传感器的状态判断票券后沿是否离开传感器的检测位置，当检测到传感器由被覆盖状态变化到不被覆盖状态时，判定票券后沿开始离开传感器的检测位置，或者当检测到票券移动两个单位距离过程中传感器连续为不被覆盖状态时，判定票券后沿已经离开传感器的检测位置。当控制单元判定票券后沿开始离开或已经离开传感器的检测位置时，即检测到票券后沿离开传感器的检测位置时，执行步骤S306，否则，继续执行步骤S302。
步骤S306，记录票券后沿离开传感器的检测位置后票券移动的距离，并判断票券后沿是否离开磁头装置的感应区域
当控制单元判定票券后沿开始离开传感器的检测位置时，控制单元开始记录票券移动的距离，即控制单元记录票券后沿离开传感器的检测位置后票券移动的距离，并将票券移动的距离与第二预设值进行比较判断票券后沿是否离开磁头装置的感应区域。由图5可知，当票券后沿开始离开传感器的检测位置时，票券继续移动距离(L1+L2/2)，票券后沿离开磁头装置的感应区域，即第二预设值可设置为(L1+L2/2)，当票券移动的距离大于第二预设值时判定票券后沿已经离开磁头装置的感应区域。其中，L1为传感器的检测位置到磁头装置的中心线的距离，L2为磁头装置的感应区域沿票券输送方向的长度。
当控制单元判定票券后沿离开磁头装置的感应区域时，流程结束，否则，继续执行步骤S302。
本实施例在票券每移动一个单位距离时分别获取位于磁头装置的感应区的票券的第一磁数据和第二磁数据，从而在整张票券经过磁头装置的感应区域时实现了获取整 张票券的磁数据。
本发明的磁数据读取方法不限于上述实施例，比如，本发明也可以采用异步方式获取整张票券的磁数据，即票券输送和磁数据读取为两个独立的过程，输送电机驱动票券在票券输送通道中移动，当检测到票券前沿到达磁头装置的感应区域时，启动磁数据读取，当检测到票券后沿离开磁头装置的感应区域时，停止磁数据读取，其中，本发明实施例的磁数据读取装置可以采用图6所示方法进行票券磁数据的读取，即，控制励磁线圈通电第一预设时间，且在通电时间到达第一预设时间时，读取待读取票券的第一磁数据，控制励磁线圈断电第二预设时间，且在断电时间到达第二预设时间时，读取待读取票券的第二磁数据。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (13)

  1. 一种磁数据读取装置，所述磁数据读取装置用于读取待读取票券的磁数据，其特征在于，所述磁数据读取装置包括磁头装置及控制单元，
    所述磁头装置包括磁芯及缠绕在所述磁芯上的励磁线圈；
    所述控制单元用于控制所述励磁线圈通电第一预设时间，且在通电时间到达所述第一预设时间时，读取所述待读取票券的第一磁数据；所述控制单元还用于控制所述励磁线圈断电第二预设时间，且在断电时间到达所述第二预设时间时，读取所述待读取票券的第二磁数据。
  2. 根据权利要求1所述的磁数据读取装置，其特征在于，所述磁数据读取装置还包括供电电源及信号处理电路，
    所述励磁线圈包括第一端子及第二端子；
    所述供电电源通过电源控制开关与所述第一端子连接，其中所述电源控制开关用于响应所述控制单元发送的闭合/断开控制信号；
    所述信号处理电路与所述第二端子连接，用于在所述控制单元的控制下，向所述控制单元发送所述第一磁数据及所述第二磁数据。
  3. 根据权利要求2所述的磁数据读取装置，其特征在于，所述控制单元用于通过控制所述电源控制开关闭合控制所述励磁线圈通电，并启动第一计时，根据所述第一计时的时间判断所述励磁线圈的通电时间是否到达所述第一预设时间；所述控制单元用于通过控制所述电源控制开关断开控制所述励磁线圈断电，并启动第二计时，根据所述第二计时的时间判断所述励磁线圈的断电时间是否到达所述第二预设时间。
  4. 根据权利要求1所述的磁数据读取装置，其特征在于，所述磁数据读取装置还包括输送单元，
    所述输送单元包括票券输送通道，所述磁头装置在所述票券输送通道中形成感应区域；
    所述输送单元用于在所述控制单元的控制下，驱动所述待读取票券在所述票券输送通道中移动。
  5. 根据权利要求4所述的磁数据读取装置，其特征在于，所述磁数据读取装置还包括传感器，所述传感器设置在所述票券输送通道上，用于检测所述待读取票券与所述感应区域的位置关系。
  6. 根据权利要求1所述的磁数据读取装置，其特征在于，所述磁数据读取装置还包括存储单元，所述存储单元用于存储所述控制单元读取的所述第一磁数据及所述第二磁数据。
  7. 根据权利要求1所述的磁数据读取装置，其特征在于，所述控制单元还用于在读取所述第一磁数据和所述第二磁数据之后根据所述所述第一磁数据和所述第二磁数据判断所述待读取票券的真伪。
  8. 一种磁数据读取装置的磁数据读取方法，其特征在于，所述磁数据读取装置用于读取待读取票券的磁数据，所述磁数据读取装置包括磁头装置，所述磁头装置包括磁芯及缠绕在所述磁芯上的励磁线圈，所述磁数据读取方法包括：
    控制所述励磁线圈通电第一预设时间，且在通电时间到达所述第一预设时间时，读取所述待读取票券的第一磁数据；以及
    控制所述励磁线圈断电第二预设时间，且在断电时间到达所述第二预设时间时，读取所述待读取票券的第二磁数据。
  9. 根据权利要求8所述的方法，其特征在于，读取所述第一磁数据及所述第二磁数据包括：
    检测所述待读取票券与所述磁头装置所形成的感应区域的位置关系；
    当检测到所述待读取票券的前沿到达所述感应区域时，启动所述第一磁数据及所述第二磁数据的读取；
    当检测到所述待读取票券的后沿离开所述感应区域时，停止所述第一磁数据及所述第二磁数据的读取。
  10. 根据权利要求8所述的方法，其特征在于，所述磁数据读取方法还包括：所述待读取票券每移动一个单位距离时，读取所述待读取票券的所述第一磁数据和所述第二磁数据。
  11. 根据权利要求8所述的方法，其特征在于，所述磁数据读取方法还包括：
    读取所述待读取票券的第一磁数据后，对所述第一磁数据进行存储；读取所述待读取票券的第二磁数据后，对所述第二磁数据进行存储。
  12. 根据权利要求8所述的方法，其特征在于，所述励磁线圈通过电源控制开关与供电电源连接，
    通过控制所述电源控制开关闭合控制所述励磁线圈通电，并启动第一计时， 其中，根据所述第一计时的时间判断所述励磁线圈的通电时间是否到达所述第一预设时间，
    通过控制所述电源控制开关断开控制所述励磁线圈断电，并启动第二计时，其中，根据所述第二计时的时间判断所述励磁线圈的断电时间是否到达所述第二预设时间。
  13. 根据权利要求8所述的方法，其特征在于，在读取所述第一磁数据和所述第二磁数据之后，所述磁数据读取方法还包括：
    根据所述第一磁数据和所述第二磁数据判断所述待读取票券的真伪。
PCT/CN2015/083211 2014-07-15 2015-07-02 磁数据读取装置及磁数据读取方法 WO2016008366A1 (zh)

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