JP3566161B2 - Coin discrimination device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a coin discriminating apparatus.
[0002]
[Prior art]
Conventionally, as this type of discriminating device, for example, one disclosed in Japanese Utility Model Laid-Open No. 3-44770 is known. This apparatus is a type of unevenness formed on the side surface of a coin, for example, a 500 yen coin stamp, by irradiating the outer circumferential surface of the coin with a long slit light in the thickness direction of the coin and obtaining the reflected light. Or a striped groove along the thickness direction of a 500 won coin (hereinafter referred to as “giza”).
[0003]
[Problems to be solved by the invention]
By the way, the design of coins is diverse, and there is a possibility that a coin that forms an inclined serrated on the outer peripheral surface of the coin that is inclined with respect to the axial direction will be employed in the future. However, the conventional discriminating apparatus has a problem that such a tilted jagged line cannot be efficiently detected with a simple apparatus configuration.
[0004]
An object of the present invention is to provide a coin discriminating apparatus capable of efficiently discriminating the presence or absence of inclined burrs with a simple apparatus configuration.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the coin discriminating apparatus according to claim 1 of the present invention is a predetermined inclination inclined obliquely with respect to the axial direction formed on the outer peripheral surface of the coin conveyed in the radial direction in the coin conveyance path. A plurality of jagged detection means for detecting the jaggedness on the outer peripheral surface of the coin are provided to be shifted in the axial direction of the coin, and the phase difference of the jagged detection of these jagged detection means And determining means for determining the presence or absence of the inclined jaggedness of the coin.
[0006]
Thus, in order to detect the presence / absence of the coin's tilted jaggedness based on the phase difference of the jaggedness detection means provided by shifting the position in the axial direction of the coin, the discriminating means has a simple device configuration. It is possible to efficiently determine the presence or absence of inclined jaggedness.
[0007]
The coin discriminating apparatus according to claim 2 of the present invention relates to the coin discriminating apparatus according to claim 1, further comprising light emitting means for irradiating light toward an outer peripheral surface of the coin conveyed along the coin conveyance path, The means is characterized by comprising light receiving means for receiving the reflected light reflected by the outer peripheral surface of the coin among the light irradiated by the light emitting means.
[0008]
Thereby, light is inject | emitted toward the outer peripheral surface of a coin by operating a light emission means. The incident light is reflected by the outer peripheral surface of the coin, and the reflected light is received by a plurality of light receiving means provided by shifting the position in the axial direction of the coin. Then, in the discriminating means, the presence / absence of the inclined jaggedness of the coin is detected based on the phase difference of the jagged detection of the plurality of light receiving means. As described above, since the light emitting means is provided and the plurality of jagged detection means are each constituted by the light receiving means, a simpler apparatus configuration can be achieved.
[0009]
The coin discriminating apparatus according to claim 3 of the present invention relates to the coin discriminating apparatus according to claim 2, wherein a plurality of sets of the light receiving means provided with the positions shifted in the axial direction of the coins are set in the coin transport direction in the coin transport path. A plurality of sets are provided adjacent to each other, and the discriminating unit discriminates the presence or absence of the inclined jaggedness of a coin based on a difference in detection signals between the light receiving units adjacent to each other in the coin transport direction.
[0010]
As a result, a plurality of sets of light receiving means provided by shifting the position in the axial direction of the coin are provided adjacent to the coin transport direction in the coin transport path, so that the outer peripheral surface of the coin is adjacent to the moving direction. Reflected light from the portion to be detected is detected by separate light receiving means provided adjacent to the coin transport direction in the coin transport path. Then, in the discriminating means, when the difference between the detection signals in the two light receiving means is calculated, when the convex portion and the concave portion are adjacent to the outer peripheral surface of the coin in the moving direction, that is, when there is a jagged line, the light receiving signal The inequality will be revealed.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
First, a coin discriminating apparatus according to a first embodiment of the present invention will be described below with reference to FIG. 1 and FIG.
The coin discriminating apparatus 1 according to the first embodiment is formed at a predetermined angle with respect to the axial direction, which is formed on the outer peripheral surface in the radial direction of the coin C conveyed in the coin conveyance path 2 that conveys the coin C in the radial direction. As shown in FIG. 1, the coins C are arranged on the outer side of the coin transport path 2 for moving the coins C in the radial direction. An optical axis that is at the horizontal side of the center position in the axial direction (thickness direction) of the coin C with respect to the conveyance direction of C, for example, coincides with the radial direction of the coin C and forms an angle of 35 ° in plan view. A light source (light emitting means) 3 that irradiates light along L, and as shown in FIGS. 1 and 2, are respectively disposed outside the coin transport path 2 in a direction orthogonal to the transport direction of the coin C. And in the axial direction of the coin C conveyed in the coin conveyance path 2 Receiving sensor (Giza detecting means, light receiving means) a plurality of provided by shifting (two specifically) and a 4.4.
[0012]
The coin transport path 2 includes coin transport means (not illustrated) that sandwiches the coin C in the axial direction, that is, the thickness direction by a belt (not illustrated) and transports the coin C while preventing its rotation. It can be moved linearly along one direction (arrow Z direction in FIG. 1).
The light source 3 is, for example, an LED.
The light receiving sensor 4 is, for example, a photodiode, and outputs a light receiving signal having an amplitude corresponding to the amount of reflected light received.
[0013]
More specifically, the plurality of light receiving sensors 4 and 4 described above have their positions in the direction of transporting the coins C by the coin transport path 2, and the light receiving unit that receives the light is the axis of the coin C of the coin transport path 2. It is arranged so as to be within the existence range in the direction. Each of the light receiving sensors 4 and 4 receives reflected light reflected by the outer peripheral surface of the coin C transported in the coin transport path 2 out of the light irradiated by the light source 3.
[0014]
Further, as shown in FIG. 1, the coin discriminating apparatus 1 according to the first embodiment includes a lens 5 disposed between each light receiving sensor 4 · 4 and the coin transport path 2, and both light receiving sensors 4 · 4 and a discriminating device (discriminating means) 6 for discriminating the presence / absence of a predetermined inclined jagged G of the coin C based on the detection signals of the light receiving sensors 4 and 4.
[0015]
Here, the discriminating device 6 discriminates the presence / absence of a predetermined inclined jagged G of the coin C based on the phase difference of the jagged detection (for example, the peak value of the received light level is used as the jagged detection) of both the light receiving sensors 4. It is like that.
[0016]
That is, since the distance between the two light receiving sensors 4 and 4 is a predetermined value, when a true coin having the inclined angle G having a predetermined angle is detected, the phase difference of the jagged detection of both the light receiving sensors 4 and 4 is uniquely determined. It will be decided. Therefore, the discriminator 6 is a true coin in which a predetermined inclined jagged G is formed if the phase difference of the jagged detection of the light receiving sensors 4 and 4 of the coin C to be detected is within a predetermined allowable range. If it is determined that there is no jagged G, or if the phase difference of the jagged detection is not within the allowable range, it is determined that there is no predetermined jagged G, for example, a fake coin.
[0017]
In addition, when a coin having a vertical jagged line parallel to the axial direction is detected, for example, the phase difference generated when both the light receiving sensors 4 and 4 detect adjacent jagged lines falls within the above-described allowable range, resulting in erroneous determination. In order to prevent this, the distance between the light receiving sensors 4 and 4 is set.
[0018]
That is, the two light receiving sensors 4 and 4 set the distance between each other according to the angle of the angle G of the true coin C, so that the phase difference of the jagged detection of the true coin C is, for example, 180 It is possible to set a predetermined phase difference such as degrees, 120 degrees, and 90 degrees. By arranging the phase differences in this way, erroneous discrimination of vertical jaggedness is prevented.
[0019]
According to the coin discriminating apparatus 1 according to the first embodiment described above, a plurality of light receiving sensors 4 (specifically two) are provided with the discriminating apparatus 6 shifted in the axial direction of the coin C. Since the presence / absence of the predetermined inclination jagged G of the coin C is detected based on the phase difference of the four jagged detections, the presence / absence of the predetermined inclination jagged G can be efficiently determined with a simple device configuration.
[0020]
Moreover, when the light source 3 is activated, light is incident on the outer peripheral surface of the coin C from the radial direction intersecting the transport direction, and the incident light is reflected by the outer peripheral surface of the coin C, and the reflected light is reflected. When light is received by a plurality (specifically, two) of light receiving sensors 4 and 4 provided by shifting the position in the axial direction of the coin, the discriminating device 6 determines the position of the jagged detection of the plurality of light receiving sensors 4 and 4. Based on the phase difference, the presence / absence of a predetermined inclined jagged G of the coin C is detected.
As described above, since the light source 3 is provided and the light receiving sensor 4 or 4 is configured to detect the jagged G, a simpler device configuration can be achieved.
[0021]
Next, a coin discriminating apparatus according to a second embodiment of the present invention will be described below with reference to FIG. 3, focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.
[0022]
The coin discriminating apparatus 1 according to the second embodiment includes a plurality of sets of light receiving sensors that are provided with a plurality of positions shifted in the axial direction of the coins C and aligned in the transporting direction of the coins C in the coin transporting path 2. A plurality of sets are provided adjacent to the coin conveyance direction in the coin conveyance path 2. That is, as shown in FIG. 3, a set of a plurality of light receiving sensors 4 a and 4 a that are shifted in the axial direction of the coin C and are aligned in the transport direction of the coin C in the coin transport path 2 and the coin C A plurality of sets of light receiving sensors 4b and 4b are provided, the positions of which are shifted in the axial direction and the positions of the coins C in the coin transport path 2 are matched with each other in the transport direction. Two sets of light receiving sensors 4a and 4a and light receiving sensors 4b and 4b provided adjacent to each other along the moving direction of the coin C by the coin transport path 2 are independent of each other. A detection signal can be output. In addition, the light receiving sensors 4a and 4b that match the position of the coin C in the axial direction can detect reflected light from the adjacent region in the transport direction of the outer peripheral surface of the coin C.
[0023]
Then, the discriminating device 6 matches the position of the coin C in the axial direction and based on the difference in detection signal between the light receiving sensors 4a and 4b adjacent to each other in the coin C conveying direction, Determine presence or absence.
[0024]
That is, the discriminating device 6 calculates the difference between the detection signals output from the light receiving sensors 4a and 4b in which the position of the coin C in the axial direction, that is, the vertical direction is matched and the position of the coin C in the transport direction is shifted. Specifically, the upper light receiving sensors 4a and 4b arranged to be shifted in the conveyance direction of the coin C detect reflected light from two adjacent areas in the conveyance direction of the outer peripheral surface of the coin C, respectively. The discriminating device 6 discriminates the unevenness G by the light amount level of the difference in the reflected light from these areas. Similarly, the lower light receiving sensors 4a and 4b, which are arranged with their positions shifted in the conveyance direction of the coin C, respectively detect reflected light from two adjacent regions in the conveyance direction of the outer peripheral surface of the coin C. The discriminating device 6 discriminates the jaggedness based on the light amount level of the difference in the reflected light from these areas.
[0025]
In the coin discriminating apparatus 1 according to the second embodiment configured as described above, the incident light from the light source 3 is irradiated on the outer peripheral surface of the coin C with the jagged G conveyed through the coin conveyance path 2. Then, the reflected light from different regions (one region indicates a dark portion and the other region indicates a bright portion) is detected by the upper light receiving sensors 4a and 4b. Then, an output signal having a light amount level corresponding to a difference between these detection signals is differentially amplified in the determination device 6. When the coin C is further moved so that the other area becomes a dark part and the one area becomes a bright part, an output signal having a sign opposite to the above is differentially amplified. Thereby, in the discriminating device 6, an AC waveform whose code changes alternately and regularly is obtained. For the lower light receiving sensors 4a and 4b, the discriminating device 6 can obtain the same AC waveform. And the discriminating device 6 discriminates the presence or absence of the jagged G based on the data thus revealed.
[0026]
In this way, a plurality of sets of light receiving sensors provided by shifting the position in the axial direction of the coin C are adjacent to the coin conveying direction in the coin conveying path 2 as the light receiving sensors 4a and 4a and the light receiving sensors 4b and 4b. Since a plurality of sets are provided on the outer peripheral surface of the coin C, separate light receiving sensors 4a and 4b are provided so that the reflected light from the portion adjacent to the moving direction on the outer peripheral surface of the coin C is adjacent to the coin C in the conveying direction. Is detected by each. Then, in the discriminating device 6, the difference between the detection signals in the upper light receiving sensors 4a and 4b is calculated, and the difference between the detection signals in the lower light receiving sensors 4a and 4b is calculated. When the convex portion and the concave portion are adjacent to each other in the moving direction, that is, when there is a jagged G, the difference between the received light signals becomes obvious.
[0027]
【The invention's effect】
As described above in detail, according to the coin discriminating apparatus according to claim 1 of the present invention, the discriminating means is based on the phase difference of the serrated detection of a plurality of the jagged detection means provided by shifting the position in the axial direction of the coin. Therefore, since the presence or absence of the predetermined inclined jaggedness of the coin is detected, it is possible to efficiently determine the presence or absence of the predetermined inclined jaggedness with a simple device configuration.
[0028]
According to the coin discriminating apparatus according to claim 2 of the present invention, when light is incident on the outer peripheral surface of the coin by operating the light emitting means, the incident light is reflected by the outer peripheral surface of the coin. Then, the reflected light is received by a plurality of light receiving means provided with the positions shifted in the axial direction of the coin. Then, in the discriminating means, the presence / absence of the inclined jaggedness of the coin is detected based on the phase difference of the jagged detection of the plurality of light receiving means. As described above, since the light emitting means is provided and the plurality of jagged detection means are each constituted by the light receiving means, a simpler apparatus configuration can be achieved.
[0029]
According to the coin discriminating device according to claim 3 of the present invention, a plurality of sets of light receiving means provided by shifting the position in the axial direction of the coin are provided adjacent to the coin transport direction in the coin transport path. Therefore, the reflected light from the portion adjacent to the conveyance direction on the outer peripheral surface of the coin is detected by separate light receiving means provided adjacent to the coin conveyance direction in the coin conveyance path. Then, in the discriminating means, when the difference between the detection signals in the two light receiving portions is calculated, when the convex portion and the concave portion are adjacent to the outer peripheral surface of the coin in the conveying direction, the difference in the light receiving signals becomes obvious. By doing so, it is possible to easily and surely determine the presence or absence of a predetermined inclined jaggedness.
[Brief description of the drawings]
FIG. 1 is a plan view schematically showing a coin discriminating apparatus according to a first embodiment of the present invention.
FIG. 2 is a side view schematically showing a partial configuration of the coin discriminating apparatus according to the first embodiment of the present invention.
FIG. 3 is a side view schematically showing a partial configuration of a coin discriminating apparatus according to a third embodiment of the present invention.
[Explanation of symbols]
C coin 1 coin discriminator 2 coin transport path 3 light source (light emitting means)
4, 4a, 4b Light receiving sensor (jagged detection means, light receiving means)
6 Discriminating device (discriminating means)

Claims (3)

A coin discriminating device for discriminating the presence or absence of a predetermined inclined serration inclined obliquely with respect to an axial direction formed on an outer peripheral surface of a coin conveyed in a radial direction on a coin conveying path,
A plurality of jagged detection means for detecting the jaggedness on the outer peripheral surface of the coin are provided with the positions shifted in the axial direction of the coin,
A coin discriminating apparatus comprising discriminating means for discriminating the presence or absence of the inclined jaggedness of a coin based on the phase difference of the jagged detection of these jagged detection means. Having light emitting means for irradiating light toward the outer peripheral surface of the coin conveyed through the coin conveying path;
2. The coin discriminating apparatus according to claim 1, wherein the jagged detection means comprises light receiving means for receiving reflected light reflected by the outer peripheral surface of the coin among the light irradiated by the light emitting means. A plurality of sets of the light receiving means provided by shifting the position in the axial direction of the coins are provided adjacent to the coin transport direction in the coin transport path,
3. The coin discriminating apparatus according to claim 2, wherein the discriminating unit discriminates the presence / absence of the inclined jaggedness of a coin based on a difference in detection signals between the light receiving units adjacent to each other in the coin conveying direction.

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