WO2016173388A1 - 一种纸币位置检测装置 - Google Patents

一种纸币位置检测装置 Download PDF

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Publication number
WO2016173388A1
WO2016173388A1 PCT/CN2016/078533 CN2016078533W WO2016173388A1 WO 2016173388 A1 WO2016173388 A1 WO 2016173388A1 CN 2016078533 W CN2016078533 W CN 2016078533W WO 2016173388 A1 WO2016173388 A1 WO 2016173388A1
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WIPO (PCT)
Prior art keywords
banknote
channel
mirror
photosensor
light
Prior art date
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Ceased
Application number
PCT/CN2016/078533
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English (en)
French (fr)
Inventor
马发清
孙志强
蒋壮
洪浙丰
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GRG Banking Equipment Co Ltd
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GRG Banking Equipment Co Ltd
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Publication date
Application filed by GRG Banking Equipment Co Ltd filed Critical GRG Banking Equipment Co Ltd
Priority to RU2017135357A priority Critical patent/RU2666315C1/ru
Priority to HK18109908.2A priority patent/HK1250548B/zh
Priority to EP16785819.0A priority patent/EP3291187B1/en
Priority to US15/563,895 priority patent/US10055922B2/en
Publication of WO2016173388A1 publication Critical patent/WO2016173388A1/zh
Priority to ZA2017/07140A priority patent/ZA201707140B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/10—Mechanical details
    • G07D11/14—Inlet or outlet ports
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D13/00—Handling of coins or of valuable papers, characterised by a combination of mechanisms not covered by a single one of groups G07D1/00 - G07D11/00
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/10—Mechanical details
    • G07D11/16—Handling of valuable papers
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D11/00—Devices accepting coins; Devices accepting, dispensing, sorting or counting valuable papers
    • G07D11/20—Controlling or monitoring the operation of devices; Data handling
    • G07D11/22—Means for sensing or detection
    • 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
    • G07D7/17—Apparatus characterised by positioning means or by means responsive to positioning

Definitions

  • the present invention relates to a financial self-service device, and more particularly to a device for detecting the position of a banknote in a transport path using a photoelectric sensor.
  • Banknote control is an indispensable function in financial self-service equipment, and its performance determines the effectiveness of the entire equipment.
  • the detection of the position of the banknote is usually to arrange a photosensor in the device, and the state of the photosensor is used to determine the specific position of the banknote.
  • the method of arranging the photoelectric sensor on the banknote transport passage is usually to place the photoelectric sensor in a parallel position spaced apart from the channel by a certain distance.
  • the state of the photoelectric sensor changes, thereby determining the banknote.
  • this method can effectively identify the position of the banknote in the channel, if the physical position of the photoelectric sensor arrangement is not enough (ie, the distance between adjacent photoelectric sensors is greater than the width of the banknote), the blind spot position will appear in the channel. The location is not recognized.
  • the position of the banknote is an extremely important parameter of the banknote control process.
  • the accuracy of the position of the banknote directly affects the control effect of the banknote.
  • the number of photoelectric sensors placed is increased.
  • the cost of high cost is required, especially when the banknote passage is long, so it is necessary to adopt a device that does not need to add a large number of photoelectric sensors and can solve the blind position banknote detection.
  • the present invention provides a banknote position detecting device which solves the detection of the position of the blind spot on the transport path by the method of vertically and horizontally staggering the photoelectric sensor.
  • a banknote position detecting device is installed in a banknote passage, and the banknote position detecting device comprises: a first photoelectric sensor installed at the entrance of the banknote passage, the first photoelectric sensor comprising a light emitting end, a receiving end, and a first a mirror and a second mirror, wherein the light-emitting end and the light-receiving end are symmetrically disposed at two sides of the entrance of the lower channel plate of the banknote channel, and the distance between the light-emitting end and the light-receiving end is not greater than Detecting the length of the banknote, the first mirror and the second mirror are symmetrically disposed at two sides of the entrance of the upper channel plate of the banknote channel, and the first mirror is located directly above the light emitting end, the first The two mirrors are located directly above the light receiving end, and the first mirror and the second mirror are disposed face to face at an angle of forty-five degrees so that the light beam emitted from the light emitting end is vertically transmitted to the first reflection.
  • the mirror is then reflected to the second mirror, and then transmitted to the light receiving end vertically through the reflection of the second mirror; a second photoelectric sensor installed at the exit of the banknote channel
  • the second photosensor includes a light emitting end, a light receiving end, a third reflecting mirror and a fourth reflecting mirror, wherein the light emitting end and the light receiving end are symmetrically disposed at the outlet of the lower channel plate of the banknote passage a side end, and a distance between the light emitting end and the light receiving end is not greater than a length of the banknote to be detected, and the third mirror and the fourth mirror are symmetrically disposed on both sides of the exit of the upper channel plate of the banknote channel
  • the third mirror is located directly above the light emitting end
  • the fourth mirror is located directly above the light receiving end
  • the third mirror and the fourth mirror are both inclined at an angle of forty-five degrees.
  • the face-to-face arrangement is such that the light beam emitted from the light-emitting end is vertically transmitted to the third mirror and then reflected to the fourth mirror, and then transmitted to the light-receiving end vertically through the reflection of the fourth mirror; and is mounted on the banknote a third photosensor in the middle of the channel, the third photosensor includes a light emitting end, a light receiving end, an upper mirror group and a lower mirror group, wherein the light emitting end and the light receiving end The light-emitting end is located between the light-emitting end and the light-receiving end of the first photosensor, and the light-receiving end is located at the light-emitting end of the second photosensor.
  • the upper mirror group includes a plurality of mirrors
  • the lower mirror group includes two mirrors smaller than the mirrors included in the upper mirror group
  • the plurality of mirrors of the upper mirror group are spaced apart Uniformly distributed on the upper channel plate, and the two mirrors of the upper mirror group are respectively disposed directly above the light emitting end and the light receiving end of the third photosensor
  • the lower mirror group a plurality of mirrors are disposed on the lower channel plate in one-to-one correspondence with the remaining plurality of mirrors of the upper mirror group, and each of the upper and lower opposing mirrors are disposed in parallel face to face
  • the plurality of mirror groups are The mirrors are oppositely inclined at an angle of forty-five degrees to ensure that the light emitted from the light-emitting end is vertically transmitted to the light-receiving end via the reflection of the upper mirror group and the lower mirror group.
  • the distance between the light emitting end of the third photosensor and the mirror closest to the light emitting end of the lower mirror group is less than or equal to the width of the banknote to be detected.
  • the plurality of mirrors of the lower mirror group are evenly spaced on the lower channel plate, and the distance between the adjacent two mirrors is less than or equal to the width of the banknote to be tested.
  • the banknote position detecting device further comprises a sensor state recording unit and a banknote position determining unit, wherein the sensor recording unit records the states of the three groups of photoelectric sensors respectively, wherein 1 represents that the state of the sensor is occluded, and 0 represents the state of the sensor. It is unobstructed.
  • the banknote position determining unit determines the banknote position according to the following rule: the sensor state recording unit records the state of the state of the three sets of photoelectric sensors as ABC, wherein A represents the state of the first photosensor, and B represents the third photosensor The state of C represents the state of the second photosensor.
  • the sensor state is 000, it is judged that the banknote to be tested does not enter the banknote channel or has left the banknote channel; when the sensor state is 100, the banknote to be tested is judged.
  • the front end just reaches the entrance of the channel; when the sensor state is 110, it is judged that the banknote has entered the banknote transport passage, but the back end of the banknote has not left the entrance of the banknote passage; when the state of the sensor is indicated as 010, it is determined that the banknote is in the passage, And the front end has not yet reached the exit of the banknote transport channel; when the sensor state is 011, it is determined that the front end of the banknote reaches the exit of the banknote transport channel; when the sensor state is 001, it is determined that the back end of the banknote reaches the exit of the channel, and the banknote is about to be Leave the banknote transport channel.
  • FIG. 1 is a schematic view of a banknote passage according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a detection principle of a first photosensor group
  • FIG. 3 is a schematic diagram of a detection principle of a third photoelectric sensor group
  • Figure 4 is a schematic view showing the position of the banknote in the passage
  • Figure 5 is a schematic view of the position of the banknote and the state of the photoelectric sensor.
  • An example of the present invention provides a banknote position detecting device, comprising three sets of photoelectric sensor groups respectively disposed at an inlet end, an outlet end of the banknote passage, and a middle portion of the banknote passage.
  • the components of the banknote position detecting device are described below with reference to the drawings. Its working principle.
  • this embodiment takes the banknote passage inside the automatic teller machine as an example to introduce the structure of the banknote passage.
  • the banknote passage mainly includes a banknote passage upper portion 100, a banknote passage lower portion 101, a banknote passage inlet 102, and a banknote passage outlet 103.
  • the banknote position detecting device is disposed inside the banknote passage, and includes a first photoelectric sensor 104 installed at the entrance of the banknote passage, A second photosensor 105 mounted at the exit of the banknote channel and a third photosensor 106 mounted in the middle of the banknote channel, wherein each set of photosensors includes an optical transmission path.
  • the state of the group of photoelectric sensors changes correspondingly, and the state of the three sets of photoelectric sensors can be combined to determine which area the banknote is located, and then according to the transmission speed of the banknote channel and the state change time of the photoelectric sensor can be calculated.
  • the specific location of the banknotes are the specific location of the banknotes.
  • FIG. 2 a schematic diagram of the detection principle of the first photosensor 104 installed at the entrance of the banknote channel is given. It should be noted that the second photosensor 105 installed at the exit of the banknote channel has the same structure and detection principle.
  • the first photosensor 104 is taken as an example for explanation.
  • the light-emitting end 109 and the light-receiving end 110 of the photosensor 104 are mounted together on the lower portion of the banknote channel plate, and the light emitted from the light-emitting end St of the photosensor 104 is perpendicularly directed to the first mirror Ma on the upper portion of the banknote passage, due to the first mirror Ma is The angle is placed, the optical path is reflected by the mirror Ma and then reaches the second mirror Mb on the other side of the upper portion of the channel. The light is reflected by the second mirror Mb and then passes through the light receiving end Sr.
  • the transmission path of the light is St->Ma- >Mb-Sr, in which the optical path Ma->Mb is guaranteed not to be blocked by the structure, since the banknote is transported in the banknote passage along the width direction of the banknote, when the distance between St and Sr is less than or equal to the length L of the banknote, as long as the banknote If the light path St->Ma or Mb->Sr is at least blocked by the banknotes, that is, the light emitted from the light-emitting end St is blocked from reaching the light-receiving end Sr, so that the state of the photoelectric sensor is occluded; The set of photosensor states is unobstructed.
  • FIG. 3 a schematic diagram of the structure and detection principle of the third photosensor 106 installed in the middle of the banknote channel is provided.
  • the light emitting end St of the photosensor 106 is installed at the entrance of the channel of the lower plate of the banknote channel, and the light receiving end Sr Installed at the exit of the channel of the lower channel of the banknote channel, similar to the detection principle of the first photosensor 104 mounted at the entrance of the banknote channel, the light is emitted from St and finally reaches Sr.
  • the embodiment adopts adding an upper mirror group on the upper portion of the banknote passage, including mirrors M1, M2, ... Mn, and adding on the lower plate of the channel.
  • the lower mirror group including the mirrors N1, N2, ..., Nn, is such that the optical path reaches the mirror N1 from the Ma to the M1 and then reaches the mirror N1 in the lower portion of the channel, and then reaches the mirror N2, and then reflects to the mirror M2. After reflection, it reaches the mirror Mb, and then the light reaches the Sr again.
  • the complete optical path is St->Ma->M1->N1->N2->M2->Mb->Sr.
  • the boundary between the mirrors N1, N2, ..., Nn is equivalent to dividing the lower portion of the banknote passage into a plurality of small areas.
  • FIG. 4 a schematic view of the position of the banknote in the channel in the embodiment is given.
  • the light-emitting end St of the third photosensor 106 installed in the middle of the banknote channel is taken as the origin, and the light-receiving end Sr of the third photosensor 106 is used.
  • the distance D from the front end of the banknote to the origin represents the position of the banknote in the channel.
  • the banknote has not reached the channel entrance T0-> the banknote front end reaches the channel entrance T1-> the banknote back end reaches the channel port T2-> the banknote arrives in the middle of the channel T3-> the front end of the banknote
  • Channel exit T4-> banknote rear end arrives at channel exit T5-> banknote rear end leaves channel exit T6.
  • the banknote position detecting device further includes a sensor state recording unit and a banknote position determining unit, wherein the sensor recording unit records the states of the three groups of photoelectric sensors respectively, and the recording format is ABC, which is sequentially listed above the arrow, wherein A represents the channel entrance.
  • the state of the first photosensor 104, B represents the state of the third photosensor 106 in the middle of the channel, C represents the state of the second photosensor 105 of the channel exit, 1 represents the state of the sensor is occluded, and 0 represents the state of the sensor is Unblocked.
  • the banknote is at the T0 position, that is, before the front end of the banknote reaches the entrance of the channel, the three sets of photoelectric sensors are unobstructed, so the state of the photoelectric sensor is 000; the banknote is at the T1 position, that is, when the front end of the banknote just reaches the entrance of the channel, the first photoelectric The sensor 104 is in an occluded state, and the second photosensor 105 and the third photosensor 106 are both unobstructed, so the photosensor state is 100; the banknote continues to enter the channel from the T1 position until the T2 position, and the banknote rear end just reaches the channel entrance.
  • the second photosensor 105 When the first photosensor 104 and the third photosensor 106 are in an occluded state, the second photosensor 105 is in an unobstructed state, so the photosensor state is 110; when the banknote is in the T3 position, that is, the banknote is in the channel, When the front end has not reached the exit of the channel, the third photosensor 106 is blocked, the first photosensor 104 and The second photosensors 105 are unoccluded, so the photosensor state is represented as 010; when the banknote reaches the T4 position, and the front end reaches the channel exit, the second photosensor 105 and the third photosensor 106 are both occluded.
  • a photosensor is in an unobstructed state, so the photosensor state is 011; when the banknote reaches the T5 position and the rear end thereof reaches the channel exit, the second photosensor 105 is in an occluded state, and the first photosensor 104 and the third optoelectronic device
  • the sensor 106 is in an unobstructed state, so the photosensor state is 001; when the banknote reaches the T6 position and the banknote rear end also leaves the channel exit, the three sets of photosensors are unobstructed, and the photosensor state is 000.
  • the length of the channel is S
  • the distance between the light-emitting end and the light-receiving end of the first photosensor 104 that sets the channel entrance is smaller than the length L of the banknote
  • the second photosensor 105 of the channel outlet is also the same. It is arranged that when the banknote enters the banknote channel entrance or exits the banknote channel outlet, the first photosensor 104 of the channel inlet and the second photosensor 105 of the channel outlet can detect that the optical path is blocked, so that the banknote can be directly determined to be located at the entrance of the banknote channel.
  • the distance between the light-emitting end and the light-receiving end of the third photosensor 106 in the middle of the channel is the length S of the channel, and since S is much larger than the width W of the banknote, the third photosensor 106 in the middle of the channel is
  • the optical path between the light-emitting end and the light-receiving end is divided into N segments, that is, the arrangement of the mirror groups as described above ensures that the distance of each optical path is smaller than the width W of the banknote, so that as long as the banknote enters the banknote channel, the third portion of the channel is in the middle.
  • the photosensors 106 are all in a state of being blocked, and then the first phototransmission of the entrance of the channel is blocked according to the banknotes.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

一种纸币位置检测装置，其安装于一纸币通道内，该纸币位置检测装置包括：安装在纸币通道入口的一第一光电传感器，安装在纸币通道出口的一第二光电传感器，以及安装在纸币通道中部的一第三光电传感器，该第一光电传感器包括一发光端、一受光端、一第一反射镜以及一第二反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上入口处的两侧端，用于检测纸币是否到达纸币通道入口；该第二光电传感器包括一发光端、一受光端、一第三反射镜以及一第四反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上出口处的两侧端，用于检测该纸币是否到达纸币通道出口。

Description

一种纸币位置检测装置
本申请要求2015年04月28日提交中国专利局、申请号为201510210261.0、发明名称为“一种纸币位置检测装置”的发明专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种金融自助设备，特别涉及一种利用光电传感器检测纸币在传输通道中的位置的装置。
背景技术
纸币控制是金融自助设备中不可缺少的功能，其性能的好坏决定着整个设备的有效性。对纸币位置的检测通常是在设备中布置光电传感器，利用光电传感器的状态来判定纸币的具体位置。
目前在纸币传输通道上布置光电传感器的方法通常是在与通道间隔一定的距离的平行位置上放置光电传感器，当纸币到达某一个光电传感器的位置时，光电传感器的状态发生变化，从而判定出纸币处于该光电传感器所在的通道位置。这种方法虽然能有效的识别出纸币在通道中的位置，但是如果光电传感器布置的物理位置不够多(即相邻的光电传感器距离大于纸币宽度)的时候，通道中就会出现盲区位置导致纸币的位置无法识别。对于金融自助设备来说，纸币位置是纸币控制过程一个极为重要的参数，纸币位置的准确度直接影响纸币的控制效果，为了更好的解决纸币在盲区位置的检测，通过增加放置光电传感器的数量需要付出高成本的代价，尤其当纸币通道较长的时候可行性很低，因此必须采用一种不需要增加大量的光电传感器又能解决盲目位置纸币检测的装置。
发明内容
为了解决现有技术中纸币在盲区位置的检测成本高的问题，本发明提供一种纸币位置检测装置，其利用纵横交错放置光电传感器的方式低成本地解决纸币在传输通道上盲区位置的检测。
一种纸币位置检测装置，安装于一纸币通道内，该纸币位置检测装置包括：安装在纸币通道入口的一第一光电传感器，该第一光电传感器包括一发光端、一受光端、一第一反射镜以及一第二反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上入口处的两侧端，且该发光端与该受光端之间的距离不大于待检测纸币的长度，该第一反射镜与该第二反射镜对称设置在该纸币通道的上通道板上入口处的两侧端，且该第一反射镜位于该发光端的垂直正上方，该第二反射镜位于该受光端的垂直正上方，该第一反射镜与该第二反射镜均以倾斜四十五度角的方式面对面设置，以使得该发光端发出的光束垂直传导给该第一反射镜之后反射给该第二反射镜，然后再经由该第二反射镜的反射，垂直传导给该受光端；安装在纸币通道出口的一第二光电传感器，该第二光电传感器包括一发光端、一受光端、一第三反射镜以及一第四反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上出口处的两侧端，且该发光端与该受光端之间的距离不大于待检测纸币的长度，该第三反射镜与该第四反射镜对称设置在该纸币通道的上通道板上出口处的两侧端，且该第三反射镜位于该发光端的垂直正上方，该第四反射镜位于该受光端的垂直正上方，该第三反射镜与该第四反射镜均以倾斜四十五度角的方式面对面设置，以使得该发光端发出的光束垂直传导给该第三反射镜之后反射给该第四反射镜，然后再经由该第四反射镜的反射，垂直传导给该受光端；以及安装在纸币通道中部的一第三光电传感器，该第三光电传感器包括一发光端、一受光端、一上反射镜组以及一下反射镜组，其中该发光端和该受光端对称地设置在该纸币通道的下通道板的入口端和出口端，且该发光端位于该第一光电传感器的发光端与受光端之间，该受光端位于该第二光电传感器的发光端与受光端之间，该上反射镜组包括多个反射镜，该下反射镜组包括的反射镜比该上反射镜组包括的反射镜少两个，该上反射镜组的多个反射镜间隔均匀地分布在该上通道板上，且该上反射镜组多出的该两个反射镜分别设置在该第三光电传感器的发光端和受光端的垂直正上方，该下反射镜组 的多个反射镜与该上反射镜组的其余多个反射镜一一对应地设置在该下通道板上，且每上下两个相对的反射镜面对面地平行设置，同一反射镜组的多个反射镜两两相对地倾斜四十五度角设置，以确保该发光端发出的光，经由该上反射镜组和下反射镜组的反射，垂直传导给该受光端。
优选的，该第三光电传感器的发光端与该下反射镜组中最靠近该发光端的反射镜之间的距离小于或等于待检测纸币的宽度。
优选的，该下反射镜组的多个反射镜间隔均匀地分布在该下通道板上，且相邻两个反射镜之间的距离小于或等于待测纸币的宽度。
优选的，该纸币位置检测装置还包括一传感器状态记录单元和纸币位置判断单元，该传感器记录单元分别记录该三组光电传感器的状态，采用1代表传感器的状态为被遮挡，0代表传感器的状态为未遮挡。
优选的，该纸币位置判断单元根据如下规则判断纸币位置：该传感器状态记录单元记录三组光电传感器的状态的格式为ABC，其中A代表该第一光电传感器的状态，B代表该第三光电传感器的状态，C代表该第二光电传感器的状态，当传感器状态为000时，则判断待测纸币未进入该纸币通道或已离开该纸币通道；当传感器状态为100时，则判断该待测纸币前端刚好到达通道入口；当传感器状态为110时，则判断纸币已进入纸币传输通道，但纸币后端还未离开该纸币通道入口；当传感器状态表示为010时，则判断为纸币在通道中，且其前端还没有到达纸币传输通道出口处；当传感器状态为011时，则判断为纸币前端到达纸币传输通道出口；当传感器状态为001时，则判断为纸币后端到达通道出口，纸币正要离开该纸币传输通道。
优选的，该纸币位置检测装置还包括一控制单元，用于记录该纸币前端到达该第一光电传感器的时间t1和到达该第二光电传感器的时间t2，且根据通道速度V、该记录的时间t1和t2以及t1和t2之间的任意时间t，利用公式L＝V*(t-t1)计算纸币在该纸币通道内相对于该纸币通道入口处的第一光电传感器的距离。
与现有技术相比，本发明优点在于：
1)只采用三组光电传感器就能判定出纸币在通道的具体位置，实现简单；
2)实验证明能准确检测出纸币在通道中的各种位置，能有效解决原有通道盲区位置无法检测的缺点，而且装置成本低，适用于纸币控制。
附图说明
图1为本发明一较佳实施例所涉及的纸币通道示意图；
图2为第一光电传感器组的检测原理示意图；
图3为第三光电传感器组的检测原理示意图；
图4为纸币在通道的位置示意图；
图5为纸币位置与光电传感器状态示意图。
具体实施方式
本发明实例提供了一种纸币位置检测装置，包括三组光电传感器组，分别设置在纸币通道的入口端、出口端以及纸币通道中部，以下结合图示说明该纸币位置检测装置的各组成部分及其工作原理。
如图1所示，本实施例以自动柜员机内部的纸币通道为例，介绍纸币通道的结构。该纸币通道主要包括纸币通道上部100、纸币通道下部101、纸币通道入口102以及纸币通道出口103，该纸币位置检测装置设置在该纸币通道内部，包括安装于纸币通道入口的第一光电传感器104、安装于纸币通道出口的第二光电传感器105以及安装于纸币通道中部的第三光电传感器106，其中每组光电传感器包括一光传输路径。当光传输路径被纸币108遮挡后，该组光电传感器的状态对应发生变化，结合三组光电传感器的状态可判定纸币位于哪个区域，再根据纸币通道的传输速度与光电传感器的状态变化时间可以计算纸币的具体位置。
如图2所示，给出了安装于纸币通道入口处的第一光电传感器104的检测原理示意图，需要说明的是，安装于纸币通道出口处的第二光电传感器105具有同样的结构和检测原理，在此以第一光电传感器104为例作出说明。该光电传感器104的发光端109和受光端110共同安装于纸币通道板下部，该光电传感器104的发光端St发出的光垂直射向纸币通道板上部的第一反射镜Ma，由于第一反射镜Ma是
Figure PCTCN2016078533-appb-000001
角放置，光路被反射镜Ma反射后平行到达通道板上部另一侧的第二反射镜Mb，光线经过第二反射镜Mb反射后到过受光端Sr，光线的传输路径为St->Ma->Mb-Sr，其中光路Ma->Mb由结构保证不会被遮挡，由于纸币是沿纸币宽度方向在纸币通道中被传输，所以当St和Sr的距离小于等于纸币的长度L时，只要纸币进入，那么光路St->Ma或者Mb->Sr至少会有一段被纸币遮挡，即发光端St发出的光被遮挡无法到达受光端Sr，这样判定该组光电传感器的状态是被遮挡的；反之该组光电传感器状态是未遮挡的。
如图3所示，给出了安装于纸币通道中部的第三光电传感器106的结构和检测原理示意图，该光电传感器106的发光端St安装于纸币通道下部板的通道入口处，而受光端Sr安装于纸币通道下部板的通道出口处，与安装于纸币通道入口处的第一光电传感器104的检测原理相似，光线从St发射出来，最终到达Sr处。由于通道长度远大于纸币的宽度W，如果只用两个反射镜Ma和Mb进行光线的传输时，当纸币位于St和Sr的中间区域时，纸币无法遮挡住St->Sr的路径，形成纸币检测的盲区。为了使纸币通道中的任何位置都可以遮挡住St->Sr的光路，本实施例采用在纸币通道板上部增加上反射镜组，包括反射镜M1、M2……Mn，在通道下部板上增加下反射镜组，包括反射镜N1、N2……Nn的方式，使得光路从Ma到达M1后再到达通道下部的反射镜N1，反射后再到达反射镜N2，再反射后到达反射镜M2，再反射后到达反射镜Mb，再反射后光线再到达Sr，完整的光路径为St->Ma->M1->N1->N2->M2->Mb->Sr。这样，以反射镜N1、N2……Nn的设置位置为界，相当于将纸币通道下部分成多个小区域，确 保St->D1->D2->Dn->……->Sr的相邻距离小于纸币宽度时，也就是发光端St到反射镜N1的设置点D1以及反射镜N1、N2……Nn设置点之间的相邻距离以及最后一个反射镜Nn到受光端Sr的距离均小于纸币宽度时，纸币在通道中的任何位置都可以把St->Sr的光路遮挡，通过该组传感器的状态是否被遮挡可以判定通道中部是否有纸币存在。
如图4所示，给出了本实施例中纸币在通道中的位置示意图，以安装于纸币通道中部的第三光电传感器106的发光端St为原点，以第三光电传感器106的受光端Sr为终点，纸币的前端与原点的距离D代表纸币在通道中的位置。根据纸币在通道中的传输情况，依次可以分为：纸币未到过通道入口T0->纸币前端到达通道入口T1->纸币后端到达通道口T2->纸币在通道中部T3->纸币前端到达通道出口T4->纸币后端到达通道出口T5->纸币后端离开通道出口T6。
如图5所示，给出了本实施例的纸币位置与光电传感器状态示意图。由于该纸币位置检测装置还包括一传感器状态记录单元和纸币位置判断单元，该传感器记录单元分别记录该三组光电传感器的状态，记录格式为ABC，按顺序标注于箭头上方，其中A代表通道入口的第一光电传感器104的状态，B代表通道中部的第三光电传感器106的状态，C代表通道出口的第二光电传感器105的状态，1代表传感器的状态为被遮挡，0代表传感器的状态为未遮挡。纸币在T0位置，也就是说，纸币前端到达通道入口前，三组光电传感器均未被遮挡，因此光电传感器状态为000；纸币在T1位置，也就是纸币前端刚好到达通道入口时，第一光电传感器104为被遮挡状态，第二光电传感器105和第三光电传感器106均为未遮挡状态，因此光电传感器状态为100；纸币从T1位置继续进入通道，直到T2位置，纸币后端刚好到达通道入口时，第一光电传感器104与第三光电传感器106都处于被遮挡状态，第二光电传感器105处于未遮挡状态，因此光电传感器状态为110；当纸币在T3位置时，也就是纸币在通道中，其前端还没有到达通道出口处时，第三光电传感器106被遮挡，第一光电传感器104和 第二光电传感器105均未被遮挡，因此光电传感器状态表示为010；纸币到达T4位置，其前端到达通道出口时，该第二光电传感器105和第三光电传感器106均为被遮挡状态，该第一光电传感器为未遮挡状态，因此光电传感器状态为011；当纸币到达T5位置，其后端到达通道出口时，该第二光电传感器105为被遮挡状态，该第一光电传感器104和第三光电传感器106为未遮挡状态，因此光电传感器状态为001；当纸币到达T6位置，纸币后端也离开通道出口时，该三组光电传感器均未被遮挡，光电传感器状态为000。
假定纸币的宽度为W和长度为L，通道的长度为S，设定通道入口的第一光电传感器104的发光端和受光端的距离小于纸币的长度L，通道出口的第二光电传感器105也同样设置，那么当纸币进入纸币通道入口或者离开纸币通道出口的时候，通道入口的第一光电传感器104和通道出口的第二光电传感器105都可以检测光路被遮挡，从而可直接判定纸币位于纸币通道入口或纸币通道出口处；通道中部的第三光电传感器106的发光端和受光端之间的距离为通道的长度S，由于S远大于纸币的宽度W，因此把通道中部的第三光电传感器106的发光端和受光端之间的光路路径划为N段，也就是前面所述通过反射镜组的设置保证每段光路路径距离小于纸币的宽度W，这样只要纸币进入纸币通道后通道中部的第三光电传感器106都处于被遮挡的状态，再根据纸币遮挡通道入口的第一光电传感器104和通道出口的第二光电传感器105的时间和通道的速度V，利用公式S＝V*T可以计算出在T时间内纸币在纸币传输通道中移动的距离，从而计算出纸币相对于通道入口的第一光电传感器104和通道出口的第二光电传感器105的位置。例如，该纸币位置检测装置可以包括一控制单元，用于记录该纸币前端到达该第一光电传感器的时间t1和到达该第二光电传感器的时间t2，且根据通道速度V、该记录的时间t1和t2以及t1和t2之间的任意时间t，利用公式L＝V*(t-t1)计算纸币在该纸币通道内相对于该纸币通道入口处的第一光电传感器的距离。
以上仅是本发明的优选实施方式，应当指出的是，上述优选实施方式不应视为对本发明的限制，本发明的保护范围应当以权利要求所限定的范围为准。对于本技术领域的普通技术人员来说，在不脱离本发明的精神和范围内，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (6)

  1. 一种纸币位置检测装置，安装于一纸币通道内，该纸币位置检测装置包括：
    安装在纸币通道入口的一第一光电传感器，该第一光电传感器包括一发光端、一受光端、一第一反射镜以及一第二反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上入口处的两侧端，且该发光端与该受光端之间的距离不大于待检测纸币的长度，该第一反射镜与该第二反射镜对称设置在该纸币通道的上通道板上入口处的两侧端，且该第一反射镜位于该发光端的垂直正上方，该第二反射镜位于该受光端的垂直正上方，该第一反射镜与该第二反射镜均以倾斜四十五度角的方式面对面设置，以使得该发光端发出的光束垂直传导给该第一反射镜之后反射给该第二反射镜，然后再经由该第二反射镜的反射，垂直传导给该受光端；
    安装在纸币通道出口的一第二光电传感器，该第二光电传感器包括一发光端、一受光端、一第三反射镜以及一第四反射镜，其中该发光端与该受光端对称设置在该纸币通道的下通道板上出口处的两侧端，且该发光端与该受光端之间的距离不大于待检测纸币的长度，该第三反射镜与该第四反射镜对称设置在该纸币通道的上通道板上出口处的两侧端，且该第三反射镜位于该发光端的垂直正上方，该第四反射镜位于该受光端的垂直正上方，该第三反射镜与该第四反射镜均以倾斜四十五度角的方式面对面设置，以使得该发光端发出的光束垂直传导给该第三反射镜之后反射给该第四反射镜，然后再经由该第四反射镜的反射，垂直传导给该受光端；以及
    安装在纸币通道中部的一第三光电传感器，该第三光电传感器包括一发光端、一受光端、一上反射镜组以及一下反射镜组，其中该发光端和该受光端对称地设置在该纸币通道的下通道板的入口端和出口端，且该发光端位于该第一光电传感器的发光端与受光端之间，该受光端位于该第二光电传感器的发光端与受光端之间，该上反射镜组包括多个反射镜，该下反射镜组包括的反射镜比该上反射镜组包括的反射镜少两个，该上反射镜组 的多个反射镜间隔均匀地分布在该上通道板上，且该上反射镜组多出的该两个反射镜分别设置在该第三光电传感器的发光端和受光端的垂直正上方，该下反射镜组的多个反射镜与该上反射镜组的其余多个反射镜一一对应地设置在该下通道板上，且每上下两个相对的反射镜面对面地平行设置，同一反射镜组的多个反射镜两两相对地倾斜四十五度角设置，以确保该发光端发出的光，经由该上反射镜组和下反射镜组的反射，垂直传导给该受光端。
  2. 如权利要求1所述的纸币位置检测装置，其特征在于，该第三光电传感器的发光端与该下反射镜组中最靠近该发光端的反射镜之间的距离小于或等于待检测纸币的宽度。
  3. 如权利要求2所述的纸币位置检测装置，其特征在于，该下反射镜组的多个反射镜间隔均匀地分布在该下通道板上，且相邻两个反射镜之间的距离小于或等于待测纸币的宽度。
  4. 如权利要求1所述的纸币位置检测装置，其特征在于，该纸币位置检测装置还包括一传感器状态记录单元和纸币位置判断单元，该传感器记录单元分别记录该三组光电传感器的状态，采用1代表传感器的状态为被遮挡，0代表传感器的状态为未遮挡。
  5. 如权利要求4所述的纸币位置检测装置，其特征在于，该纸币位置判断单元根据如下规则判断纸币位置：该传感器状态记录单元记录三组光电传感器的状态的格式为ABC，其中A代表该第一光电传感器的状态，B代表该第三光电传感器的状态，C代表该第二光电传感器的状态，当传感器状态为000时，则判断待测纸币未进入该纸币通道或已离开该纸币通道；当传感器状态为100时，则判断该待测纸币前端刚好到达通道入口；当传感器状态为110时，则判断纸币已进入纸币传输通道，但纸币后端还未离开该纸币通道入口；当传感器状态表示为010时，则判断为纸币在通道中，且其前端还没有到达纸币传输通道出口处；当传感器状态为011时，则判断为纸币前端到达纸币传输通道出口；当传感器状态为001时，则判断为 纸币后端到达通道出口，纸币正要离开该纸币传输通道。
  6. 如权利要求5所述的纸币位置检测装置，其特征在于，该纸币位置检测装置还包括一控制单元，用于记录该纸币前端到达该第一光电传感器的时间t1和到达该第二光电传感器的时间t2，且根据通道速度V、该记录的时间t1和t2以及t1和t2之间的任意时间t，利用公式L＝V*(t-t1)计算纸币在该纸币通道内相对于该纸币通道入口处的第一光电传感器的距离。
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CN105976501B (zh) * 2016-05-23 2019-05-14 河北工业大学 一种纸币检测装置
CN106846606B (zh) * 2017-02-08 2019-09-20 深圳怡化电脑股份有限公司 一种数据采集方法、装置及金融设备
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