Patent Application
20230394902
The present invention relates to a bill handling apparatus and a failure determination method.
Some kinds of bill handling apparatuses, such as automatic teller machine, include a field repair unit that is individually replaceable. Examples of the field repair unit include a money receiving/paying unit that performs reception and payment of bills, a storage unit that temporarily stores bills, storage cassettes that store bills by denomination, and the like.
Examples of related-art is described in Japanese Laid-open Patent Publication No. 2011-008336.
When a failure occurs in a field repair unit, use of the bill handling apparatus becomes difficult.
Accordingly, in the present application, a technique enabling to detect a failure of a field repair unit is proposed.
According to an aspect of an embodiment, a bill handling apparatus in the present application includes a field repair unit, a sensor and a determining unit. The sensor detects a vibration of the field repair unit. The determining unit determines whether there is a failure in the field repair unit based on the vibration.
Embodiments of the present disclosure will be described below based on the drawings. In the drawings, the same components are denoted by the same reference symbols.
<Configuration of Bill Handling Apparatus>
As illustrated in
The bill 2 that is put in from the money receiving/paying unit 3 is stored in the first storage unit 4, and then discriminated by the discriminating unit 5. The bill 2 from which something abnormal is detected is transferred from the discriminating unit 5 to the rejecting unit 8 to be stored therein. On the other hand, the bill 2 from which nothing abnormal is detected by the discriminating unit 5 is stored in the second storage unit 6.
When return processing is performed for the bill 2 that has put in from the money receiving/paying unit 3, the bill 2 stored in the second storage unit 6 is transferred to the money receiving/paying unit 3, and is returned from the money receiving/paying unit 3. On the other hand, when money receiving processing is performed for the bill 2 that has put in from the money receiving/paying unit 3, the bill stored in the second storage unit 6 is transferred to the first storage unit 4, and is transferred from the first storage unit 4 to the discriminating unit 5, and is then transferred from the discriminating unit 5 to the returning unit 7, and is stored in storage cassettes 7a, 7b, 7c, and 7d of the returning unit 7 by denomination.
Furthermore, when the bill 2 stored in the returning unit 7 is dispensed, the bill 2 stored in the returning unit 7 is transferred from the returning unit 7 to the discriminating unit 5, and is then transferred from the discriminating unit 5 to the second storage unit 6 to be stored in the second storage unit 6. The bill 2 that is stored in the second storage unit 6 is transferred to the money receiving/paying unit 3, and is dispensed from the money receiving/paying unit 3.
Each of the money receiving/paying unit 3, the first storage unit 4, the second storage unit 6, the storage cassettes 7a to 7d, and the rejecting unit 8 is one example of the field repair unit individually replaceable. Each of the money receiving/paying unit 3, the first storage unit 4, the second storage unit 6, the storage cassettes 7a to 7d, and the rejecting unit 8 includes a conveyance roller to convey the bill 2, and a conveyance motor to drive the conveyance roller. Because each of the money receiving/paying unit 3, the first storage unit 4, the second storage unit 6, the storage cassettes 7a to 7d, and the rejecting unit 8 has the conveyance motor, vibrations occur when the conveyance motor rotates.
To the money receiving/paying unit 3, a vibration detection sensor 51A is mounted, to the first storage unit 4, a vibration detection sensor 51B is mounted, to the second storage unit 6, a vibration detection sensor 51C is mounted, and to the rejecting unit 8, a vibration detection sensor 51H is mounted. Moreover, to the storage cassette 7a, a vibration detection sensor 51D is mounted, to the storage cassette 7b, a vibration detection sensor 51E is mounted, to the storage cassette 7c, a vibration detection sensor 51F is mounted, and to the storage cassette 7d, a vibration detection sensor 51G is mounted.
Furthermore, the bill handling apparatus 1 includes a determining unit 52.
Hereinafter, the money receiving/paying unit 3, the first storage unit 4, the second storage unit 6, the storage cassettes 7a to 7d, and the rejecting unit 8 can be collectively referred to as “field repair unit”. Moreover, hereinafter, the vibration detection sensors 51A to 51H can be collectively referred to as “vibration detection sensor 51”.
One example of a vibration detection sensor 51 is an acceleration sensor. The determining unit 52 is implemented by, for example, digital signal processor (DSP), a field programmable gate array (FPGA), or the like as hardware.
<Action of Bill Handling Apparatus>
The respective vibration detection sensors 51 mounted on the respective field repair units detect vibrations of the respective field repair units continuously over time, and outputs chronological data indicating values of vibrations (hereinafter, referred to as “vibration data” in some cases) to the determining unit 52. The vibration detection sensor 51A outputs vibration data of the money receiving/paying unit 3 to the determining unit 52, the vibration sensor 51B outputs vibration data of the first storage unit 4 to the determining unit 52, the vibration detection sensor 51C outputs vibration data of the second storage unit 6 to the determining unit 52, and the vibration detection sensor 51H outputs vibration data of the rejecting unit 8 to the determining unit 52. Moreover, the vibration detection sensor 51D outputs vibration data of the storage cassette 7a to the determining unit 52, the vibration detection sensor 51E outputs vibration data of the storage cassette 7b to the determining unit 52, the vibration detection sensor 51F outputs vibration data of the storage cassette 7c to the determining unit 52, and the vibration detection sensor 51G outputs vibration data of the storage cassette 7d to the determining unit 52.
The determining unit 52 determines whether there is a failure in a field repair unit for each of the field repair units based on vibrations detected by the vibration detection sensor 51.
The frequency of a vibration (hereinafter, referred to as “vibration frequency” in some cases) of the field repair unit varies according to a condition of the conveyance motor of the field repair unit. For example, when the rotation speed in a state in which a normal conveyance motor having 20 teeth continuously rotates at a uniform speed is 2000 rpm, and because the frequency corresponding to 2000 rpm is 33.3 Hz, the vibration frequency is 33.3×20=666 Hz. Therefore, the vibration frequency when an abnormal gear having 19 teeth with one tooth chipped out of 20 teeth rotates at 2000 rpm is 33.3×19=633 Hz. Furthermore, the vibration frequency when an abnormal gear having 18 teeth with two teeth chipped out of 20 teeth rotates at 2000 rpm is 33.3×18=599 Hz.
The determining unit 52 subjects the vibration data to frequency analysis. The determining unit 52 performs the frequency analysis of vibration data, for example, by using fast Fourier transform (FFT).
Accordingly, the determining unit 52 determines, setting a reference value to, for example, 640 Hz, that there is a failure in the field repair unit when the frequency of a frequency component having the maximum amplitude level in a frequency analysis result (hereinafter, referred to as “maximum level frequency” in some cases) is lower than the reference value of 640 Hz. On the other hand, when the maximum frequency level is equal to or higher than the reference value of 640 Hz, the determining unit 52 determines that there is no failure occurring in the field repair unit. Therefore, for example, when the maximum level frequency is 618 Hz as shown in
When it is determined that a failure has occurred in a field repair unit, the determining unit 52 notifies of occurrence of a failure in the field repair unit and information enabling to uniquely identify the field repair unit in which the failure has occurred to the outside of the bill handling apparatus 1.
As above, the first embodiment has been explained.
<Action of Bill Handling Apparatus>
The determining unit 52 acquires vibration data regularly (for example, once a day) from the vibration detection sensor 51 per field repair unit, and analyzes changes of the vibration data collected over multiple days (for example, 30 days), and thereby predicts the time when a failure occurs in the field repair unit (hereinafter, “failure occurrence time” in some cases). Moreover, the determining unit 52 notifies of the predicted failure occurrence time to the outside of the bill handling apparatus 1. This enables to replace a field repair unit in a preventive manner before a failure occurs in the field repair unit.
For example, the determining unit 52 may predict the failure occurrence time based on a change of the maximum level frequency across multiple days.
Collection and analysis of the vibration data, prediction of the failure occurrence time, and notification of the failure occurrence time may be performed by a server or the like that is connected to the bill handling apparatus 1 through a network, in place of the determining unit 52.
As above, the second embodiment has been explained.
As described, the bill handling apparatus of the present disclosure (the bill handling apparatus 1 of the embodiments) includes field repair units (the money receiving/paying unit 3, the first storage unit 4, the second storage unit 6, the storage cassettes 7a to 7d, the rejecting unit 8 of the embodiments), a sensor (the vibration detection sensors 51A to 51H of the embodiments), and a determining unit (the determining unit 52 of the embodiments). The sensor detects vibrations of a field repair unit. The determining unit determines whether there is a failure in the field repair unit based on the vibrations detected by the sensor.
Thus, a failure of the field repair unit can be detected.
Moreover, the determining unit subjects the vibrations detected by the sensor to frequency analysis, and determines that a failure has occurred in a field repair unit when the frequency of a frequency component having the maximum amplitude level in an analysis result of the frequency analysis is lower than a reference value.
Thus, determination whether there is a failure occurring in a field repair unit can be performed accurately.
According to the disclosed technique, a failure of a field repair unit can be detected.
Although the present disclosure has been described with respect to specific embodiments for a complete and clear disclosure, the appended claims are not to be thus limited but are to be construed as embodying all modifications and alternative constructions that may occur to one skilled in the art that fairly fall within the basic teaching herein set forth.
This application is a continuation of International Application No. PCT/JP2021/011929, filed on Mar. 23, 2021, the entire contents of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/JP2021/011929 | Mar 2021 | US |
| Child | 18453848 | US |
