JP3482021B2 - Optical detection unit of paper sheet identification device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical detecting section of a paper sheet identifying apparatus for identifying paper sheets such as banknotes, securities and bonds.

[0002]

2. Description of the Related Art Conventionally, in a bill validator, which is an example of a paper sheet validator, an automatic vending machine or the like equipped with the bill validator is installed outdoors, so that countermeasures against mischief are required. The optical detection unit in this banknote identification device includes a light emitting unit and a light receiving unit. As these components, for example, as shown in FIG. 12, a substrate provided with a light emitting element L _S as a light emitting unit and a light receiving unit. As a transmitted light amount detection type in which a substrate equipped with a light receiving element L _R is disposed so as to face each other with the banknote 1 interposed therebetween, or as shown in FIG. 13, a light emitting element L _S and a light receiving element L _{R are used} as light receiving and emitting parts. Generally, a reflected light amount detection type in which a substrate equipped with the above-mentioned is arranged on one side of the banknote 1 is used. Incidentally, in the transmitted light amount detection type optical detection unit, as shown in FIG. 14, a large substrate provided with a plurality of light emitting elements L _S as a light emitting unit and a large substrate provided with a plurality of light receiving elements L _R as a light receiving unit. There is also a type in which the substrate is provided so as to face each other with the banknote 1 in between.

FIG. 15 is a side view showing the basic construction of a conventional bill discriminating apparatus. This bill validator 1
At 0, the bill 1 inserted from the bill insertion slot is conveyed by a conveyance mechanism having rollers and the like, passes through the conveyance passage 3, and is provided with an optical detection unit (here, in FIG.
After the optical detection by the transmitted light amount detection type shown in FIG. 2 and the light emitting portion and the light receiving portion are arranged on the upper surface and the lower surface of the transport passage 3, respectively, the result is a normal one. If it is determined that the banknote 1 is stored in the banknote storage unit 2, the banknote 1 is sandwiched between the central portions of the apparatus main body. When it is determined that the bill 1 is not authentic based on the detection result of the optical detection unit, the bill 1 is conveyed in the opposite direction by the conveying mechanism and returned to the bill insertion slot.

By the way, in recent years, since the protrusion from the road is regarded as a problem, there is a strong demand for the vending machine to be thin, and the bill validator mounted on the vending machine must be miniaturized. Since it is installed outdoors, in addition to the measures against the above-mentioned mischief, durability measures such as entry of rainwater are also required.

[0005]

In the case of the optical detecting section of the above-described paper sheet discriminating apparatus, in order to improve the detection accuracy of the paper sheet discriminating, more optical data are sampled from the paper sheet. It is desirable that the size of the banknote recognition device installed in an automatic vending machine be reduced, and if the installation space for the drive system, pull-out prevention mechanism, etc. is required, installation for the optical detection unit is required. Space is regulated. Further, in the case of a bill validator for a vending machine, in order to prevent rainwater from entering, it is desirable that the optical detection unit including the electronic circuit be arranged away from the bill insertion opening, so There are also restrictions on the installation location. Therefore, in the case of a bill validator for a vending machine, it is required that optical data can be efficiently sampled from bills and the like with a small-scale configuration, but it is important to install the optical detection unit in a limited space. It has an important meaning to prevent mischievous bills that have been altered by cutting, etc. and mischief caused by pulling out bills.

However, in the optical detection unit having the structure shown in FIG. 14, large-sized substrates must be arranged on both sides of the conveyance path with the banknotes in between, which occupies a large occupied space and is used for vending machines. It is difficult to apply to a bill validator, and Fig. 1
In the optical detection unit having the configuration shown in FIG. 2 or FIG. 13, sufficient optical data cannot be sampled from a paper sheet, and a malfunction such as returning is likely to occur, which causes a problem in detection accuracy.

The present invention has been made to solve such a problem, and its technical problem is to install a paper sheet in a limited narrow installation space and efficiently sample optical data from the paper sheet. An object of the present invention is to provide an optical detection unit of a class identification device.

[0008]

According to the present invention, paper sheets
A light-emitting element that emits irradiation light to irradiate the
In the optical detection part of the paper sheet identification device including the light receiving element that receives light
The paper is conveyed to the light emitting element and the light receiving element.
Detects multiple reflections by arranging them in parallel at different positions near the transport path
Part of the reflection detection unit, and
Of the plurality of reflection detection units, which are optically coupled
Light emitted by a specific light-emitting element is used for receiving light from another
The light guide member that guides the child and the light emitting element of the plurality of reflection detection units
A light emission control hand that controls the light emission by selecting a specific one from
And a plurality of reflection detectors and a light guide member cooperating with each other.
Reflected and transmitted light related to the irradiation light from the paper sheets being conveyed
Are configured to be able to detect
It consists of a paper sheet drive unit sandwiched between the open passages and multiple reflections.
The detectors are located at different positions outside the passageway and guide the light.
The member is a paper sheet identification device disposed in the paper sheet drive unit.
An optical detector is obtained.

Further , according to the present invention, the above-mentioned paper sheet identification device
In the optical detection unit of, the plurality of reflection detection units are
Paper sheets that are placed side by side at different positions facing each other on the outside
The optical detector or multiple reflection detectors of another device is
Side by side at different positions on the outside of some of the parts
And a plurality of light guide members are combined to form a bill drive unit.
Paper leaf identification that extends inside and outside of other parts of the passage
An optical detector of another device can be obtained.

The light of any one of these paper sheet identification devices
In the optical detection unit, the light emitting elements of the multiple reflection detection units
The emission wavelength characteristics may be different, or multiple
Spectral sensitivity characteristics of the light receiving elements of the reflection detector are different.
What to do (or apply both)
Is preferred.

[0011]

[Action] In the optical detecting section of the banknote identification apparatus of the present invention, in order to efficiently sampled optical data from the bill in a small structure, the different <br/> positions conveyance passage near the bill is transported Ru formed respectively emitting element and a light receiving element is juxtaposed
Place a reflection detector, further to guide the incident light by the light-emitting element of certain of reflection detection unit coupled to optically by light guide member each reflection detection portions to the light receiving element of the others Reflected light and transmitted light related to irradiation light from bills being conveyed as
Is detected, and each reflection detector is extended in parallel with each other.
In the transport path that sandwiches the paper sheet drive unit between
The light guide members are placed at different positions outside the
It is located in the leaf drive. In this optical detection unit, each reflection detection unit and the light guide member cooperate with each other so that reflected light and transmitted light related to the irradiation light can be detected from the bill. Since the light guide member can be arranged in a narrow installation space or a place where there is a high possibility of electric leakage, the efficiency of the installation space is improved and it also contributes to wire saving. In addition, in this optical detection unit, if elements with different emission wavelength characteristics and spectral sensitivity characteristics are used, it is possible to perform sampling with different optical data of reflected light and transmitted light obtained from the front and back surfaces of the banknote, enabling efficient and highly accurate detection. Can be done .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The optical detecting section of the paper sheet discriminating apparatus of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a partial cross-sectional view showing the essential structure of an optical detection section of a bill validator according to the present invention. In this optical detection unit, the light emitting element L _S and the light receiving element L _R are arranged side by side on the substrate at positions (both the upper surface and the lower surface of the transportation path 3) facing each other with the transportation path 3 through which the banknote 1 is transported interposed therebetween. The two reflection detection units 40 and 50 are formed so that the data of the reflected light amount and the transmitted light amount regarding the irradiation light from each light emitting element L _S can be detected from the bill 1 being conveyed by each reflection detection unit 40 and 50. There is. The optical detection unit also includes a light emission control unit (not shown) that controls light emission by selecting a specific one of the light emitting elements L _S of the reflection detection units 40 and 50. Further, in the case of this optical detection unit, four optical data from the banknote 1 transported into the transport passage 3 using the same light emission wavelength characteristic and spectral sensitivity characteristic for each light emitting element L _S and each light receiving element L _R Can be sampled.

Incidentally, each of the reflection detecting units 40 and 50 is shown in FIG.
As shown in FIG. 7, instead of the configuration in which the light emitting element L _S and the light receiving element L _R are arranged in parallel, the same configuration can be obtained by using the reflection sensors 4 and 5 in which the light emitting element L _S and the light receiving element L _R are integrated. it can.

FIGS. 3A to 3F are timing charts showing the detection operation by the optical detection section described in FIG. 1 (however, here, not at the time of actual banknote detection,
It shows the timing at the time of non-banknote detection in each optical element).

Here, the light emission control means is the reflection detecting section 40.
When the light emission of the first light emitting element L _S is selectively controlled,
When the irradiation light is emitted from the light emitting element L _S of FIG. 3A in a cycle as shown in FIG. 3A, the first light receiving element L of the reflection detecting section 40 is correspondingly shown as shown in FIG. 3C. with light reflected from the bill 1 is detected received by the _R, transmitted light from the bill 1 in the second light receiving element L _R of the reflection detection unit 50 as shown in FIG. 3 (f) are detected received. Next, when the light emission control unit selectively controls the light emission of the second light emitting element L _S of the reflection detection unit 50, the irradiation light is emitted from the second light emitting element L _{S in} a cycle as shown in FIG. 3B. Then, in response to this, FIG.
As shown in (d), the first light receiving element L of the reflection detector 40
The transmitted light from the bill 1 is received and detected by _R , and as shown in FIG.
As shown in (e), the second light receiving element L of the reflection detecting section 50.
_{At R} , the reflected light from the bill 1 is received and detected. This operation is alternately repeated in this optical detector.

By repeating the switching by the light emission control means in this manner, the reflected light and the transmitted light of the irradiation light with which the bill 1 is irradiated are detected. Since each light emitting element L _S and each light receiving element L _R have the same emission wavelength and spectral sensitivity, the data regarding the amount of transmitted light received and detected by each light receiving element L _R is the detection time difference or the inter-element data. There is a slight difference in characteristics due to
Since these difference values are extremely small, the detected amounts are almost the same.

By the way, in order to further improve the detection accuracy of the discrimination, two light receiving elements having the same amount of transmitted light are used by using light emitting elements L _S and light receiving elements L _R having different emission wavelength characteristics and spectral sensitivity characteristics. The data of two different types of transmitted light may be sampled by using the absorption difference due to the wavelength of the printing portion of the banknote 1 instead of detecting by L _R.

FIG. 4 shows the basic construction of the optical detection section of another bill validator according to the present invention. In this optical detection unit, the reflection detection units 40 and 50 are optically coupled to each other by the optical fiber 6 serving as a light guide member, and the light emitted by the light emitting element L _S of a specific one of the reflection detection units 40 and 50 is irradiated. Is guided to the other light receiving element L _R , and the reflected light and the transmitted light related to the irradiation light are detected from the banknote 1 by the cooperation of the reflection detection units 40 and 50 and the optical fiber 6. Here, the reflection detection units 40 and 50 are attached to the same substrate and arranged at different positions on one side in the vicinity of the transport passage 3, and the optical fiber 6 is placed at a position on the other side facing the one side in the vicinity of the transport passage 3. Are arranged. Also here, the light emitting element L of each reflection detection unit 40, 50
A light emission control means for controlling a light emission by selecting a specific one from _S is provided. This light emission control means is provided for each reflection detection unit
Light emission control unit 11 connected to 0, 50 light emitting elements L _S
And A / D converters 12 and 13 connected to the light receiving elements L _R of the reflection detectors 40 and 50, respectively, and various data including data on reflected light and transmitted light connected to these units. CPU14 for this and this CPU1
Memory 15 storing information necessary for data processing according to No. 4
It is composed of the combined functions of and.

In this optical detector, each reflection detector 40, 5
Each of the light emitting elements L _{S at} 0 is selectively controlled to emit light on the basis of an instruction from the CPU 14. Therefore, according to an instruction from the CPU 14, the first of the reflection detection units 40 is transmitted through the light emission control unit 11.
Selecting control light emission element L _S of the first light-emitting element L _S
The light energy of the irradiation light emitted from the banknote 1 is being conveyed.
Is partially absorbed and the other part is reflected and the rest is transmitted and passes through the optical fiber 6. At this time, the first light receiving element L _R receives and detects the reflected light amount as the first bill data, and In the second light receiving element L _R of the reflection detection unit 50, the amount of transmitted light transmitted from the end A to the end B in the optical fiber 6 and transmitted again through the banknote 1 is received and detected as the second banknote data. It In this way, the second portion of the reflection detection unit 50
In the light emitting element L _R , the optical data regarding the amount of transmitted light that passes through the bill 1 at two locations is sampled.

Next, when the CPU 14 selectively controls the second light emitting element L _S of the reflection detecting section 50 through the light emission control section 11, the light energy of the irradiation light emitted from the second light emitting element L _S is being conveyed. The bill 1 is partially absorbed, the other part is reflected, and the rest is transmitted and passes through the optical fiber 6. At this time, the reflected light amount is received and detected as the third bill data by the second light receiving element L _R. At the same time, in the first light receiving element L _R of the reflection detection unit 40, the amount of transmitted light, which is the transmitted light transmitted from the end portion B to the end portion A in the optical fiber 6 and transmitted through the bill 1 again, is received as the second bill data. To be detected. In this way, the first light emitting element L _R of the reflection detection unit 40 samples optical data relating to the amount of transmitted light that passes through the banknote 1 at two locations.

[0022] As this Kodewa waveguide member has been bound between the reflection detection unit 40, 50 optically with one optical fiber 6, as shown in FIG. 5, instead of this, the The first light emitting element L _S of the reflection detecting section 40 and the second light receiving element L _R of the reflection detecting section 50, and the second light emitting element L _S of the reflection detecting section 50 and the first light receiving element of the reflection detecting section 40. _LR and 2
The optical fibers 6a and 6b may be optically coupled to each other. However, here, both ends of each of the optical fibers 6a and 6b are arranged on the extension lines of the optical axes of the light emitting element L _S and the light receiving element L _R , respectively. Further, here, as a countermeasure when the optical axes are not aligned, each optical fiber 6a, 6
A condenser lens or the like may be provided at the light entrance portion of b. Moreover, even with the configuration using the light guide member, but the light emission wavelength and the spectral sensitivity characteristic as the light-emitting elements L _S and the light-receiving elements L _R has been described the case of using the same, the detection accuracy of the identification Again In order to further improve the above, it is possible to adopt a configuration in which each light emitting element L _S or each light receiving element L _R having different emission wavelength characteristics and spectral sensitivity characteristics is used to sample data of two different types of transmitted light. As an example, each light emitting element L _S
The emission possible wavelength selected element in a range of greater than 900 to 1000 [nm], with the peak spectral sensitivity as the first light receiving element _{L R} is used photodiode 900 nm, as a second light receiving element _{L R} Peak spectral sensitivity is 1
There is a case in which a 000 nm photodiode is used to improve the identification accuracy by utilizing the difference in absorption coefficient depending on the wavelength of the printing portion of the banknote 1.

FIG. 6 is a perspective view showing a configuration of a main part of the optical detecting section shown in FIG. 4 when the reflection detecting sections 40 and 50 are arranged separately from each other. Here, the width Wy in the width direction of each reflection detection unit 40, 50 is smaller than the width dimension of the banknote 1 during transportation, and the space Wx in each reflection detection unit 40, 50 that matches the transportation direction S is the time of transportation. An example is shown that is smaller than the longitudinal dimension of the banknote 1.

According to this optical detecting unit, the bill 1 during transportation
When the amount of transmitted light is sequentially sampled, a detection area as shown in FIG. 7 is formed on the banknote 1. That is, immediately after the conveyed banknote 1 reaches the reflection detection unit 40, the change in the transmitted light amount and the reflected light amount in the detection area E1 is sampled, and when the banknote 1 reaches the reflection detection unit 50, it is detected in both the detection areas E2 and E3. The amount of transmitted light that is absorbed and combined, the amount of reflected light of the detection region E2, and the amount of reflected light of the detection region E3 are detected. Subsequently, the subsequent detection from the position where the rear end of the conveyed banknote 1 has passed the reflection detection unit 40 is a change in the transmitted light amount of the detection region E4 and the reflected light amount of the detection region E4.

FIG. 8 shows the pattern DX of the bill data detected by the optical detecting section in the relation between the movement amount M and the detection regions E1 to E4 with the passage of time when the bill 1 is conveyed. However, regarding the movement amount M here, M
1 is when the banknote 1 reaches the reflection detecting section 40, M2 is when the banknote 1 reaches the reflection detecting section 50, M3 is when the banknote 1 passes through the reflection detecting section 40, and M4 is the banknote 1 when the reflection detecting section 40. Shown when passing 50. Also in this optical detection unit, the first to fourth bill data D1 as described above
Although the data about the amount of reflected light from the banknote 1 in the detection area E1 and the detection area E2 is obtained as the first banknote data D1, the second banknote data D2 is the amount of transmitted light in the detection area E1. The data, the data regarding the combined transmitted light amount in the detection region E2 and the detection region E3, and the data regarding the transmitted light amount in the detection region E4 are continuously obtained. Further, as the third bill data D3, data of the reflected light amount of the bill 1 in the detection region E3 and the detection region E4 is obtained, and as the fourth bill data D4, the data of the transmitted light amount in the detection region E1 and the detection region E4.
2 and the data of the combined transmitted light amount in the detection area E3,
Data on the amount of transmitted light in the detection area E4 is continuously obtained.

By the way, in the second bill data D2 and the fourth bill data D4, if the respective light emitting elements L _S are selected as those having different wavelengths, different amounts of transmitted light can be obtained from the bill 1. In the case of the conventional reflected light amount detection type optical detection unit, since only two types of the first banknote data D1 and the third banknote data D3 can be obtained, comparing both,
Since the number of samplings of the optical data is increased in this optical detector, the effect of improving the detection accuracy is great. In the case of the example here, the combined transmitted light amount is obtained in the detection area E2 and the detection area E3, but the distance between the reflection detection sections 40 and 50 should be equal to or more than the longitudinal dimension of the bill 1 during conveyance. For example, data on the amount of transmitted light that is not combined can be obtained.

By the way, as shown in FIG. 15, the bill validator for a vending machine is generally long and has a structure capable of opening the transport passage 3 as a reaction when a bill 1 is jammed. In order to prevent rainwater and the like from entering, the rear part of the insertion slot for the banknotes 1 in the transfer passage 3 has a structure in which the banknotes 1 can be temporarily transferred to the upper part and changed in direction to be stored in the lower banknote storage part 2. Has become. Further, in the case of such a bill discriminating apparatus, as shown in FIG. 15, a bill driving unit 7 including a belt for conveying the bill 1 near the center is sandwiched in the main body. That is, the transport passage 3 is provided in the gap between the bill drive unit 7 and the main body, and the bill drive unit 7 is connected to the passage unit 3 a of the transport passage 3,
It is arranged so as to be sandwiched between 3b.

Here, in the case of providing the optical detection unit, conventionally, the light emitting element L _S and the light receiving element L _R are arranged inside the bill driving unit 7 and on the main body side outside the transport passage 3 to provide a narrow bill driving unit 7. emitting portion formed by attaching the element to the substrate even, but it is necessary to provide either of the light receiving portion, of the present invention as shown in FIG. 9
The figure which arrange | positions the reflection detection parts 40 and 50 in the optical detection part of the paper sheet identification device which concerns on one Example outside the banknote path | route, and arrange | positions the optical fiber 6c inside the conveyance path 3 pinched by the banknote path. As shown in FIG. 10, the cross section of the optical portion 9 is a substrate in which a pair of reflection detecting portions 40 and 40 'are arranged in parallel on the main body side outside the passage portions 3a and 3b of the conveying passage 3, and separately from this. A banknote drive unit 7 in which a pair of reflection detection units 50 and 50 'are provided side by side and belts 8 and 9 are provided at both ends.
By providing two optical fibers 6c and 6d inside,
Each reflection detecting section 40, 50 and each reflection detecting section 40 ', 50'
It suffices to provide an optical detection unit configured to optically couple and with the respective optical fibers 6c and 6d.

That is, here, each reflection detecting section 40, 40 '
And the reflection detectors 50 and 50 'are arranged side by side at different positions on the outside of the passage portions 3a and 3b of the transport passage 3 facing each other.

In the case of this optical detector, each reflection detector 4
When the banknote 1 is conveyed to one passage portion 3a on the 0, 40 'side and the other passage portion 3b on each reflection detecting portion 50, 50' side
When the banknote 1 is conveyed, the scanning position of the banknote 1 in which the transmitted light amount is detected changes, and data of different transmitted light amounts depending on the two scanning positions can be detected. As a result, the number of samplings of optical data is increased as compared with the conventional case, and excellent detection is possible.

In addition to this, for example, as shown in FIG. 11, one of the passage portions 3a and 3b of the conveying passage 3 is provided.
A substrate in which the reflection detection units 40 and 50 are arranged side by side is provided, and the three optical fibers 6c, 6d, and 6e are combined and arranged so as to extend inside the banknote drive unit 7 and outside the other passage unit 3b. As a result, it is possible to dispose an optical detection unit having a configuration in which the reflection detection units 40 and 50 are optically coupled by the optical fibers 6c, 6d and 6e.

In this optical detector, three optical fibers 6
By using c, 6d, and 6e, the number of substrates can be reduced as compared with that of FIG.

[0033] Incidentally, in any of the light Science detection unit described above may be used each reflection detector of the light emitting element L _S, different ones emission wavelength characteristic and spectral sensitivity characteristic as the light receiving element L _R. Moreover, physicians use a reflective sensor that integrates a light emitting element L _S and the light receiving element L _R respectively in place of the reflection detection unit
However, it is possible to configure a completely equivalent optical detection unit. Moreover, even with the optical detector of any of the above-described light-emitting element L _S of each reflection _detector, the number of light-receiving elements L _R is not limited to one by one, it may be one by plural. In addition, even with the optical detector of any of the above, but can be modified in various ways depending on the form of the conveyance path, and since even sheet identifying device other than the bill validator is applicable, the present invention paper sheet recognition apparatus is not limited to the configurations described in the embodiment.

[0034]

As described above, according to the optical detecting section of the paper sheet discriminating apparatus of the present invention, the light emitting element and the light receiving element are arranged in parallel at different positions in the vicinity of the conveying path along which the paper sheet is conveyed. A plurality of reflection detecting sections are formed , and each reflection detecting section is optically coupled by a light guide member to form a reflection detecting section.
The light emitted by the light emitting element of one of the
After having <br/> as guided to the optical element from a sheet of transportable Okunaka so as to detect the data of the reflected light quantity and transmitted light quantity relating irradiation light path extending in parallel each reflection detector to each other Between departments
Of the passage part in the conveying path that sandwiches the paper sheet drive part in the
Place the light guide members inside the paper sheet drive unit at different positions on the outside.
Since it is placed in the
Since it is not necessary to provide a substrate included in the light section and the light receiving section, it can be installed in a limited narrow installation space because it is configured on a small scale, and it becomes possible to efficiently sample a large number of optical data from paper sheets. As a result, the detection accuracy of the optical detector is improved .

In other words, in the case of this optical detecting section, especially the automatic sales
When used as a bill validator for vending machines, it has various lengths.
The banknote identification device of a vending machine
In the case of storage, place the board in the banknote drive unit near the center.
Instead of being installed, a light guide member is provided, and a light emitting element and a light receiving element are provided.
It is composed of a child and transports all reflection detection parts including the substrate.
It can be placed on the outside of the bill validator
Therefore, it has a simple structure, requires less installation space, and saves space.
Lines and costs can be reduced. Also, optical
In the detection part, each of the
Arrange the reflection detector and combine multiple light guide members
So that it extends inside the banknote drive and the other side of the passage.
If it is arranged, rainwater can easily enter the light guide member.
Away from the electronic components by placing
Reliable by avoiding operational troubles
Will be improved. Furthermore, the light emitting element of each reflection detection unit
The light emission wavelength characteristics and spectral sensitivity characteristics of the
If so, many different types of optical data can be detected.
To improve the detection accuracy of identification.
Become.

[0036]

[0037]

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a configuration of a main part of an optical detection unit of a bill validator according to the present invention.

FIG. 2 is a partial cross-sectional view showing a main configuration of an optical detection unit configured by using a reflection sensor in place of the light emitting element and the light receiving element included in the optical detection unit shown in FIG.

3A and 3B are timing charts showing the detection operation by the optical detection unit shown in FIG. 1, in which FIG. 3A shows the irradiation light of the first light emitting element, and FIG. 3B shows the irradiation light of the second light emitting element. (C) relates to reflected light from the bill of the first light receiving element, (d) relates to transmitted light from the bill of the first light receiving element, (e) relates to bill of the second light receiving element. (F) relates to the transmitted light from the bill of the second light receiving element.

FIG. 4 is a diagram showing a basic configuration of an optical detection unit of another bill validator according to the present invention.

5 is a partial cross-sectional view showing a configuration of a main part when the optical detection unit shown in FIG. 4 is modified by using two light guide members.

6 is a perspective view showing a configuration in the case where each reflection detection unit in the optical detection unit shown in FIG. 4 is arranged at a predetermined position included in a conveyance surface for a banknote during conveyance so as to be separated from each other.

FIG. 7 is a diagram showing a detection area of a transmitted light amount regarding a bill during conveyance, which is detected by the optical detection unit shown in FIG. 6;

8 is a diagram showing a pattern of banknote data detected by the optical detection unit shown in FIG.
This is shown in relation to the detection area shown in.

9 is a diagram showing a case in which the optical detection unit having the structure shown in FIG. 4 is modified and provided in a banknote identification device for a vending machine having a structure in which a banknote driving unit is provided between the passage parts of the transport passage. Of the present invention
It is the side view which showed the basic composition of the optical detection part of the banknote identification device which concerns on one Example .

FIG. 10 is a partial cross-sectional view showing the main configuration of the optical detection section shown in FIG.

FIG. 11 is a partial cross-sectional view showing a configuration in which the main configuration of the optical detection unit shown in FIG. 10 is modified separately.

FIG. 12 is a partial cross-sectional view showing a main part configuration of a transmitted light amount detection type optical detection unit provided in a conventional bill identifying apparatus.

FIG. 13 is a side sectional view showing a main part configuration of an optical detection unit of a reflected light amount detection type, which is provided in a conventional bill identifying apparatus.

FIG. 14 is a partial cross-sectional view showing the configuration of a main part of another transmitted light amount detection type optical detection unit provided in the conventional bill identifying apparatus.

FIG. 15 shows a bill identifying device for a vending machine having a structure in which a bill driving unit is provided between passage portions of a conveying passage.
FIG. 6 is a side view showing a configuration when the optical detection unit shown in FIG.

[Explanation of symbols]

1 bill 2 bill storage part 3 conveyance passages 3a, 3b passage parts 4,5 reflection sensor 6, 6a, 6b, 6c, 6d, 6e optical fiber 7 bill drive part 8, 9 belt 10 bill recognition device 11 light emission control part 12, 13 A / D converter 14 CPU 15 Memory 40, 50, 40 ', 50' Reflection detector L _S light emitting element L _R light receiving element

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G07D 7/12 G06T 1/00

Claims (6)

(57) [Claims] 1. Light emission for emitting irradiation light for irradiating paper sheets
Element and a paper sheet including a light receiving element for receiving the irradiation light
In the optical detection section of another device, the light emitting element and the light receiving element
The optical elements are different from each other in the vicinity of the transport path through which the paper sheets are transported.
Are installed in parallel at multiple positions to form multiple reflection detectors.
Note: Optically couple predetermined ones of multiple reflection detectors.
And a specific one of the plurality of reflection detection units is emitted.
A light guide unit that guides the light emitted by the optical element to the light receiving element of another
Material and light emitting element of the plurality of reflection detection units
And a light emission control means for controlling light emission.
Only the plurality of reflection detectors and the light guide member cooperate with each other.
Reflected light from the paper sheet being conveyed by
And transmitted light can be detected.
The paper sheet drive section is sandwiched between the passage sections that extend parallel to
The plurality of reflection detection parts are different from each other on the outside of the passage part.
Is disposed at a position where the light guide member is the paper sheet drive unit.
Optics of a paper sheet identification device characterized by being placed inside
Detection unit. 2. An optical inspection of the paper sheet identification device according to claim 1.
In the exit part, the plurality of reflection detection parts are provided in the passage part.
It is specially installed side by side at different positions facing each other on the outside.
The optical detection unit of the paper sheet identification device to be used. 3. An optical inspection of the paper sheet identification device according to claim 1.
In the exit part, the plurality of reflection detection parts are provided in the passage part.
Some of them are arranged side by side at different positions.
And a plurality of the light guide members are combined to form the bill.
It is arranged so as to extend inside the drive part and outside the other part of the passage part.
An optical detection unit of a paper sheet identification device characterized by the above. 4. The paper sheet according to claim 1.
In the optical detection unit of the class identification device, the plurality of reflection detection
The light-emitting elements in each section have different emission wavelength characteristics.
The optical detection unit of the characteristic sheet identification device. 5. The paper sheet according to claim 1.
In the optical detection unit of the class identification device, the plurality of reflection detection
It is important to note that the light receiving elements in each section have different spectral sensitivity characteristics.
The optical detection unit of the characteristic sheet identification device. 6. The paper sheet according to claim 1.
In the optical detection unit of the class identification device, the plurality of reflection detection
The light emitting elements in the parts have different emission wavelength characteristics. Become the above
The light receiving elements of the multiple reflection detectors each have a spectral sensitivity characteristic.
Detection of paper sheet identification device characterized by different
Department.