Banknote position detection device

Patent metadata

Field	Value
Publication number	US-10055922-B2
Application number	US-201615563895-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Apr 28, 2015
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

An apparatus for detecting a banknote location is provided, which includes a first, second and third photoelectric sensors installed respectively at the entrance, exit and inside of a banknote passage. The first photoelectric sensor includes a light-emitting end, a light-receiving end, a first reflecting mirror and a second reflecting mirror, for detecting whether a banknote reaches the entrance. The second photoelectric sensor includes a light-emitting end, a light-receiving end, a third reflecting mirror and a fourth reflecting mirror, for detecting whether a banknote reaches the exit. The third photoelectric sensor includes a light-emitting end, a light-receiving end, an upper reflecting mirror group and a lower reflecting mirror group, for detecting whether a banknote is inside the passage.

First claim

The invention claimed is:

1. An apparatus for detecting a banknote location, which is installed in a banknote passage, the apparatus comprising:
a first photoelectric sensor installed at an entrance of the banknote passage, wherein the first photoelectric sensor comprises a first light-emitting end, a first light-receiving end, a first reflecting mirror and a second reflecting mirror; the first light-emitting end and the first light-receiving end are arranged symmetrically on two side ends of an entrance on a lower passage plate of the banknote passage, and a distance between the first light-emitting end and the first light-receiving end is not more than a length of a banknote to be detected; the first reflecting mirror and the second reflecting mirror are arranged symmetrically on two side ends of an entrance on an upper passage plate of the banknote passage, the first reflecting mirror is located right above the first light-emitting end while the second reflecting mirror is located right above the first light-receiving end, and both of the first reflecting mirror and the second reflecting mirror are arranged in a face-to-face manner at an inclined angle of 45 degrees, to control a light beam emitted by the first light-emitting end to be vertically directed to the first reflecting mirror, then reflected to the second reflecting mirror, and then vertically directed to the first light-receiving end via reflection by the second reflecting mirror;
a second photoelectric sensor installed at an exit of the banknote passage, wherein the second photoelectric sensor comprises a second light-emitting end, a second light-receiving end, a third reflecting mirror and a fourth reflecting mirror; the second light-emitting end and the second light-receiving end are arranged symmetrically on two side ends of an exit on the lower passage plate of the banknote passage, and a distance between the second light-emitting end and the second light-receiving end is not more than the length of the banknote to be detected; the third reflecting mirror and the fourth reflecting mirror are arranged symmetrically on two side ends of the exit on the upper passage plate of the banknote passage, the third reflecting mirror is located right above the second light-emitting end while the fourth reflecting mirror is located right above the second light-receiving end, and both of the third reflecting mirror and the fourth reflecting mirror are arranged in a face-to-face manner at an inclined angle of 45 degrees, to control a light beam emitted by the second light-emitting end to be directed to the third reflecting mirror, then reflected to the fourth reflecting mirror, and then vertically directed to the second light-receiving end via reflection by the fourth reflecting mirror; and
a third photoelectric sensor installed in the banknote passage, wherein the third photoelectric sensor comprises a third light-emitting end, a third light-receiving end, an upper reflecting mirror group and a lower reflecting mirror group; the third light-emitting end and the third light-receiving end are arranged symmetrically at an entry end and an exit end of the lower passage plate of the banknote passage, and the third light-emitting end is located between the first light-emitting end of the first photoelectric sensor and the first light-receiving end of the first photoelectric sensor while the third light-receiving end is located between the second lighting-emitting end of the second photoelectric sensor and the second light-receiving end of the second photoelectric sensor; the upper reflecting mirror group comprises a plurality of reflecting mirrors while the lower reflecting mirror group comprises reflecting mirrors having a number two less than a number of the reflecting mirrors of the upper reflecting mirror group, and the plurality of reflecting mirrors of the upper reflecting mirror group are arranged at a uniform interval on the upper passage plate and two of the reflecting mirrors of the upper reflecting mirror group are arranged respectively right above the third light-emitting end and the third light-receiving end of the third photoelectric sensor, and the reflecting mirrors of the lower reflecting mirror group are arranged on the lower passage plate in one-to one correspondence with the reflecting mirrors of the upper reflecting mirror group, with each pair of opposite upper reflecting mirror and lower reflecting mirror being arranged in a face-to-face and parallel manner; each pair of reflecting mirrors of the same reflecting mirror group are arranged in a face-to-face manner at an inclined angle of 45 degrees, to control a light emitted by the third light-emitting end is vertically directed to the third light-receiving end via reflection by the upper reflecting mirror group and the lower reflecting mirror group.

2. The apparatus for detecting a banknote location according to claim 1 , wherein a distance between the third light-emitting end of the third photoelectric sensor and the reflecting mirror which is the closest to the third light-emitting end in the lower reflecting mirror group is smaller than or equal to a width of the banknote to be detected.

3. The apparatus for detecting a banknote location according to claim 2 , wherein the plurality of reflecting mirrors of the lower reflecting mirror group are arranged at a uniform interval on the lower passage plate and a distance between two adjacent reflecting mirrors is less than or equal to the width of the banknote to be detected.

4. The apparatus for detecting a banknote location according to claim 1 , further comprising a sensor state recording unit and a banknote location determining unit, wherein the sensor state recording unit records states of the first, second, and third photoelectric sensors, by using 1 to represent a shielded from light state and 0 to represent an unshielded from light state.

5. The apparatus for detecting a banknote location according to claim 4 , wherein the banknote location determining unit is configured to determine a banknote location according to rules as follows:
the states of the first, second, and third photoelectric sensors are recorded by the sensor state recording unit in a format of ABC, with A representing a state of the first photoelectric sensor, B representing a state of the third photoelectric sensor and C representing a state of the second photoelectric sensor,
if a sensor state value is 000, it is determined that the banknote to be detected does not enter into the banknote passage or has left the banknote passage;
if the sensor state value is 100, it is determined that a front end of the banknote to be detected just arrives at the entrance of the banknote passage;
if the sensor state value is 110, it is determined that the banknote has entered a banknote conveying passage but a rear-end of the banknote has not yet left the entrance of the banknote passage;
if the sensor state value is 010, it is determined that the banknote is in the banknote conveying passage and the front end of the banknote has not yet arrived at the exit of the banknote conveying passage;
if the sensor state value is 011, it is determined that the front end of the banknote arrives at the exit of the banknote conveying passage; and
if the sensor state value is 001, it is determined that the rear-end of the banknote arrives at the exit of the banknote conveying passage and the banknote is about to leave the banknote conveying passage.

6. The apparatus for detecting a banknote location according to claim 5 , further comprising a controlling unit, which is configured to record a time t 1 when the front end of the banknote arrives at the first photoelectric sensor and a time t 2 when the front end of the banknote arrives at the second photoelectric sensor, and calculate a distance be

Assignees

• Grg Banking Equipment Co Ltd

Inventors

• Ma Faqing
• Sun Zhiqiang
• Jiang zhuang
• Hong Zhefeng

Classifications

• G07D11/16 Primary

  Handling of valuable papers (within containers G07D11/13) · CPC title

• G07D7/17

  Apparatus characterised by positioning means or by means responsive to positioning · CPC title

• G07D11/14 Primary

  Inlet or outlet ports · CPC title

• G07D11/22

  Means for sensing or detection · CPC title

• G07D13/00 Primary

  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 · CPC title