JPH06325238A - Coin discriminating device - Google Patents

Abstract

PURPOSE:To provide a coin discriminating device which is capable of exactly discriminating the authenticity of coins and the kinds of the coins by substantially improving the accuracy of sensors by organically combining sensors without increasing the accuracy of sensors and the number of sensors to be used. CONSTITUTION:This device has a first magnetic sensor 5 and a second magnetic sensor 6 which are situated at the coin surface of coins 2 rolling on the rolling contact surface of a coin path 4 for coin rolling and detect the influence on a magnetic flux by the coins 2, respectively, a processing part 11 generating processing characteristic data based on the characteristic data detected by the first and second magnetic sensors 5 and 6, and a discriminating part 11 discriminating the authenticity and kinds of coins by comparing processing characteristic data and reference data. The detection terminal of the first magnetic sensor 5 is arranged on the upper side of a locus X that the center of the coin surface of a received minimum diameter coin rolling in the coin rolling in the coin path 4 draws and the detection terminal of the second magnetic sensor 6 is arranged on the lower side of the locus X.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a vending machine,
The present invention relates to a coin identification device that is provided in a money changer or the like and that identifies the authenticity and type of inserted coins.

[0002]

2. Description of the Related Art A conventional coin discriminating apparatus, for example, Japanese Patent Publication No. 5
The one described in Japanese Patent Laid-Open No. 6-513965 performs identification of authenticity and type of coins by checking each element such as material, thickness, and outer shape of the inserted coin. Specifically, one magnetic sensor (hereinafter referred to as "sensor") suitable for checking each element of a coin rolling on a coin passage for rolling a coin is used for each element. In other words, a sensor with a low operating frequency is used to detect the material, and a sensor with a relatively high operating frequency is used to detect the thickness and outer shape (hereinafter appropriately referred to as “shape”), and the sensor facing the coin is detected. Characteristic data based on each element of the coin is detected by adjusting the size of the area and the mounting position of the sensor. Then, the reference data corresponding to each element for each type of coin stored in advance is compared with the characteristic data of the input coin, and when the difference is within a predetermined range, the identification corresponding to the reference data is performed. It is comprehensively identified as a coin of the type.

[0003]

In the conventional coin discriminating apparatus described above, since one sensor detects one element, the detection accuracy depends on the accuracy of each sensor, and the material and outer shape are clearly determined. It is possible to identify different coins, but it is difficult to accurately identify coins of similar material and shape, especially foreign coins that have been used illegally.

The present invention has been made in view of the above problems, and it is possible to substantially improve the accuracy of the sensor by organically combining them without increasing the accuracy of the sensor and the number of sensors used. An object of the present invention is to provide a coin identification device that can accurately identify the authenticity and type of coins.

[0005]

[Means for Solving the Problems] In order to solve the above-mentioned object,
The coin discriminating apparatus according to claim 1 faces the coin surface of the coin rolling on the rolling surface of the coin passage for rolling the coin, and detects the influence of the coin on the magnetic field, and the second magnetic sensor. A magnetic sensor, a processing unit that generates processing characteristic data based on the characteristic data detected by the first and second magnetic sensors, and a determination unit that compares the processing characteristic data and the reference data to determine the authenticity and type of coins. And the detection end of the first magnetic sensor is disposed above the trajectory drawn by the center of the coin surface of the receiving minimum diameter coin rolling in the coin passage, and the detection end of the second magnetic sensor is disposed above the trajectory. It is characterized in that it is arranged below.

Further, the coin discriminating apparatus of the invention according to claim 2 detects the influence of the coin on the magnetic field by facing the coin surface of the rolling coin on the rolling surface of the coin passage for rolling the coin. A first magnetic sensor and a second magnetic sensor; and a processing unit that generates processing characteristic data based on the characteristic data detected by the second magnetic sensor when the characteristic data detected by the first magnetic sensor has a preset value. And a discrimination unit that discriminates the authenticity and the type of coin by comparing the processing characteristic data and the reference data, and detects the detection ends of the first and second magnetic sensors,
To shift the coin passages from each other in the upstream and downstream directions,
In addition, it is characterized in that they are respectively disposed at positions facing the coin surface of the rolling coins at the same time.

Further, the coin discriminating apparatus of the invention according to claim 3 detects the influence of the coin on the magnetic field by facing the coin surface of the rolling coin on the rolling surface of the coin passage for rolling the coin. Average value of the two characteristic data detected by the third sensor when the characteristic data detected by the first magnetic sensor, the second magnetic sensor, the third magnetic sensor, and the first and second magnetic sensors are preset values. And a discriminating unit for discriminating the authenticity and type of coins by comparing the average value with the reference data, and rolling the detection ends of the first, second and third magnetic sensors. The coins of the coins coming in are arranged at the same time as the coin faces, and the detection end of the first magnetic sensor is arranged above the locus drawn by the center of the coin face of the receiving minimum diameter coin rolling in the coin passage. , The detection end of the second magnetic sensor is arranged below the locus. It is characterized in.

[0008]

According to the coin discriminating apparatus of the first aspect, the first magnetic sensor and the second magnetic sensor have the portions on the upper side and the lower side of the coin surface of the coin rolling in the coin passage for rolling the coin. The influence on the magnetic field is detected as characteristic data. In this case, since the detection ends of both sensors are located at a constant height position with respect to the rolling surface, the degree of influence of the coin blocking the magnetic field of both sensors depends on the height of the rolling coin, that is, the coin surface. It changes depending on the size. Specifically, since the detection end of the second magnetic sensor is arranged below the locus drawn by the center of the receiving minimum diameter coin rolling in the coin passage, the degree of influence is mainly the detection end. It is determined by the size of the area of the lower arcuate portion of the coin surface facing. Similarly, the first
The degree of influence of the magnetic sensor is mainly determined by the size of the area of the upper arcuate portion of the coin surface facing the detection end.
Here, the change in the size of the area of both arcuate portions with respect to the change in the diameter of the coin is obviously larger in the upper direction because the center position of the coin surface of the coin changes in the height direction, and the first magnetic sensor The characteristic data of No. 2 has a greater degree of change with respect to the diameter of the coin than the characteristic data of the second magnetic sensor. That is, it is possible to obtain two pieces of characteristic data having different degrees of change for one coin. Therefore, it is possible to accurately determine the diameter of the coin by processing both characteristic data by the processing unit and comparing them with the reference data.

On the other hand, both characteristic data also change due to the positional deviation in the width direction when the coin rolls in the coin passage. However, by processing characteristic data based on both characteristic data of the first and second magnetic sensors, for example, by making the data of the relative size of both characteristic data, this variation is offset, and even in this case, the coin It becomes possible to accurately discriminate the truth and the kind of.

According to the coin discriminating apparatus of the second aspect, the first magnetic sensor and the second magnetic sensor influence the magnetic field by the coin surface of the coin rolling in the coin passage for rolling the coin. It is detected as characteristic data with a time difference. Here, the first magnetic sensor and the second magnetic sensor are displaced from each other in the upstream and downstream directions of the coin passage, and are respectively arranged at positions simultaneously facing the coin surface of the rolling coin. . That is, since the two sensors are arranged so that the time for detecting the characteristic data is different, when the characteristic data of the first magnetic sensor has a certain value by the processing unit,
Characteristic data based on a specific portion of the coin of the second magnetic sensor is obtained. For this reason, the value of the characteristic data of the first magnetic sensor is set so that the characteristic data of a specific portion having the distinguishability of coins, for example, the edge of the coin can be detected by the second magnetic sensor. By comparing the characteristic data of the two magnetic sensors and the reference data by the discriminating unit, it becomes possible to discriminate the coin based on the portion having the characteristic of discriminating the coin, for example, the notch of the edge of the coin.

Further, according to the coin discriminating apparatus of the third aspect, the first magnetic sensor and the second magnetic sensor influence the magnetic field by the coin surface of the coin rolling in the coin passage for rolling coins. Each is detected as characteristic data. And
When the characteristic data of the first and second magnetic sensors have a certain value, the processing unit can obtain the characteristic data of the third magnetic sensor corresponding to the value. Then, the processing unit calculates the average value of the two characteristic data of the third magnetic sensor and compares the average value with the reference data of the determination unit to determine the authenticity and the type of coin. In this case, for example, when a coin bounces on the coin passage, the first magnetic sensor and the second magnetic sensor are moved relative to the locus drawn by the center of the receiving minimum diameter coin rolling in the coin passage.
Since they are respectively arranged above and below, the influence on the characteristic data is larger for the first magnetic sensor and smaller for the second magnetic sensor than in the normal rolling state. Therefore, the time for the characteristic data of the second magnetic sensor to reach the set value is earlier than that for the normal rolling state, and the time for the characteristic data of the second magnetic sensor to reach the set value is conversely delayed. Therefore, the value of the characteristic data of the third magnetic sensor also changes according to the bound state, but when the values of the two characteristic data are averaged, the changes cancel each other out and the two values of the third magnetic sensor when not bound. It is almost equal to the average value of the characteristic data. In other words, even if a coin bounces, the third
Errors in the characteristic data of the magnetic sensor cancel each other out, and the coin can be accurately discriminated based on the characteristic data detected by the third magnetic sensor.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A coin discriminating apparatus according to an embodiment of the present invention will be described in detail below with reference to the drawings. This coin discriminating device is of a type to be mounted on a vending machine.
Is a side view of the cutting. The coin discriminating apparatus 1 includes a coin slot 3 opened to the outside for inserting a coin 2, a coin passage 4 for rolling coins connected to the coin slot 3, and a first sensor (first magnetic field) facing the coin passage 4. Sensor) 5, a second sensor (second magnetic sensor) 6, a third sensor (third magnetic sensor) 7, a coin passage gate 8 provided at a downstream portion of the coin passage 4, and processing such as discrimination of coins. The coin identification processing unit 9 is provided.

The first and second sensors 5 and 6 are each composed of a pair of magnetic sensors in which transmitting coils 5a and 6a and receiving coils 5b and 6b, which are winding coils using a drum-shaped core, are combined. In addition, by making the coin to have a diameter smaller than the smallest coin (hereinafter referred to as "minimum diameter coin received") among the coins that are allowed to be received, the region where the magnetic flux extends is narrowed.
Both sensors 5 and 6 are used at a slightly higher frequency,
Mainly, it is easy to detect the shape, especially the shape and thickness near the edge.

On the other hand, the third sensor 7 is composed of a magnetic sensor in which a transmitting coil and a receiving coil of a wound coil using a pot core are connected in series, and the first and second sensors 5 and 6 are connected to each other. It has a shape with a large diameter in comparison. Further, the third sensor 7 has a region where the magnetic flux extends is made wider than that of the first and second sensors 5 and 6, and is used at a low frequency, and is mainly used for detecting a material and a shape. It

Next, an outline of the operation of the coin discriminating apparatus 1 will be described. When the coin 2 is inserted into the coin slot 3, the coin 2 is inserted inside the coin discriminating apparatus 1 along the rolling surface of the coin passage 4. Roll to. When the coin 2 reaches the position of the first, second and third sensors 5, 6, 7, the three sensors 5, 6,
7 outputs characteristic data for detecting the thickness, outer shape and material of the coin 2 to the coin processing unit 9, respectively. The coin processing unit 9 compares the characteristic data and the processing characteristic data obtained by processing the characteristic data (hereinafter referred to as “processing data”) with reference data stored in advance to determine the authenticity and the type of the coin 2. To do.

When it is determined that the coin 2 is proper, the coin processing unit 9 opens the coin passage gate 8 and transfers the coin 2 to the coin storage (not shown) through the receiving passage (not shown). Store. On the other hand, when the coin processing unit 9 determines that the coin 2 is not proper, the coin 2 is returned via the return passage (not shown). When the coin 2 passes through the receiving passage 8, the passage of the coin 2 is detected by a coin passage sensor (not shown), and the passage signal is output to the coin processing unit 9. When the coin processing unit 9 receives the passage signal, the coin processing unit 9 sends a coin proper signal to the outside of the coin identifying device 1 and the predetermined coin processing ends.

Next, the electric circuit of the coin discriminating apparatus 1 will be described with reference to FIG. The constituent elements shown in the figure are mainly built in the coin processing section 9, and the reference numeral 11 shown in the figure indicates the generation of processing data based on the characteristic data and the authenticity and type of the coin 2 as the discrimination section. Is a microcomputer (hereinafter, referred to as "CPU") that performs the above determination.

The input port of this CPU 11 has an A / D
Signal conversion circuit 1 including conversion circuit and signal processing circuit
2 is connected. Further, the signal conversion circuit 12 is connected to the first, second and third detection coils 5b, 6b and 7 via the detection circuits 13, 14 and 15. In addition, the first and second sensors 5a and 6a include an oscillator circuit 1
6 and 17 are respectively connected. On the other hand, the CPU 11
The appropriate coin setting unit 18 and the gate processing unit 19 are connected to the input / output port of 1 via a bus line.

Explaining the above components, the signal conversion circuit 12 includes three detection circuits 1 as coins 2 are inserted.
The detection signal as the characteristic data output from 3, 14, and 15 is amplified to a predetermined amplitude, the waveform is shaped by a built-in clip circuit, and the shaped characteristic data is digitalized through an A / D conversion circuit. CPU1 as a signal
Output to 1.

The appropriate coin setting unit 18 stores in advance reference data such as the thickness and material of the coin which serves as a discrimination reference (the content of the reference data will be described later). The required data is read by the CPU 11 accessing a predetermined address.

When it is determined that the inserted coin 2 is proper, the gate processing unit 19 controls the opening and closing of the coin passage gate based on the gate control signal from the CPU 11.

Next, the coin discriminating process of the CPU 11 will be described.

First, the characteristic data will be described with reference to FIG. This figure shows the first, second and third parts from the top of the figure.
The characteristic data detected by the sensor are shown, the vertical axis shows the received magnetic field strength (characteristic data), and the horizontal axis shows the time. According to this, the first coin 5 detects the characteristic data TD1 of the inserted coin 2, and then the second and third sensors 6 and 7 detect the characteristic data TD1.
2 and TD3 are respectively detected and three sensors 5,
It can be seen that the detection areas 6 and 7 overlap each other.

Next, the positional relationship of the first, second and third sensors for obtaining the above characteristic data will be described in detail.

The first sensor 5 is a receiving sensor in which the magnetic field between the magnetic poles of the transmitting coil 5a and the receiving coil 5b, that is, substantially the center of the sensor surface of both sensors (hereinafter referred to as "detection end") rolls in the coin passage 4. It is arranged above the locus X drawn by the center of the small-sized coin (shown by the dotted line in the figure). On the other hand, the second sensor 6
Means that the detection ends of the transmission coil 6a and the reception coil 6b are on the rolling surface side (lower side) of the coin passage 4 with respect to the locus X, and
It is arranged downstream of the coin passage 4 from the sensor 5.

Further, the first sensor and the second sensor 5, 6
The vertical ends from the locus X are different at the detection ends of the respective sensor surfaces. That is, the first sensor 5 is arranged near the locus X with a small vertical distance, and the second sensor 6 is arranged near the rolling surface of the coin passage 4 with a large vertical distance. . Further, the second sensor 6 is arranged so that when the edge of the coin 2 passes the detection end of the first sensor 5, the edge of the coin 2 passes slightly inside the edge of the second sensor 6. At this time, the feature of the edge of the coin 2 is detected by the second sensor 6. Note that this is not particularly limited, and the second sensor 6 is arranged so as to be near the position of point symmetry with the first sensor 5 with respect to the center of the coin 2, that is, on the side of the third sensor 7 in FIG. You may set it up.

The third sensor 7 is arranged, for example, so that its detection end is on the locus X. Further, the three sensors 5, 6 and 7 are arranged so as to face the coin surface of the rolling coin 2 at the same time so that the detection regions of the characteristic data by the magnetic field overlap each other.

Next, the arrangement of these sensors will be described with reference to FIG. 4. As shown in FIG. 4A, the transmitter coils 5a and 6a of the first and second sensors 5 and 6 are shown.
And the receiving coils 5b and 6b are arranged so as to face each other with the coin passage 4 in which the coin 2 rolls being sandwiched therebetween.
Further, as shown in FIG. 3B, the third sensor 7 is arranged so that the transmission coil and the reception coil face each other with the coin passage 4 in between.

Next, the detection of the characteristic data will be described in detail. The CPU 11 inputs the characteristic data of the coin 2 detected by the first and second sensors 5 and 6, and at that time stores the values A and B of the points 21 and 22 at which the received magnetic field strength is the minimum, and The value D of the received magnetic field strength of the second sensor 6 when the received magnetic field strength of the sensor 5 reaches a preset value C (value at the point indicated by reference numeral 23 in the figure) (shown by reference numeral 24 in the figure) The value at the point) is memorized.

Further, the CPU 11 causes the characteristic data of the first and second sensors 5 and 6 to have preset values C and E.
The respective values F and G of the reception magnetic field strength of the third sensor 7 when (the value at the point indicated by reference numeral 25 in the figure)
(Indicated by reference numerals 27 and 28 in the figure) and the third sensor 7
The value H at the point 28 when the received magnetic field strength of is the minimum is stored.

Next, the CPU 11 performs the following calculation and determination based on the characteristic data obtained above. That is, the CPU 11 determines from the values A and B, for example, F = A
-B or F = A / B is calculated, and the calculation result (processed data) and the reference data which is obtained as a reference value by experiments or the like and is stored in advance for each type of coins corresponding to this result. Compare. As a result, if it is within the predetermined permissible range as compared with the reference data of a specific type of coin, it is determined to be that type of coin.

This is determined based on the following principle. That is, since the detection ends of both the sensors 5 and 6 are at a constant height position with respect to the rolling surface, the degree of influence of the coin 2 blocking the magnetic fields of the sensors 5 and 6 depends on the rolling coin 2. It changes according to the height, that is, the size of the coin surface. Specifically, since the detection end of the second sensor 6 is disposed below the locus X, the degree of influence is mainly determined by the area of the lower arcuate portion of the coin surface facing the detection end. Determined by size. Similarly, the degree of influence of the first sensor 5 is mainly determined by the size of the area of the upper arcuate portion of the coin surface facing the detection end. Here, the change in the size of the area of the two arcuate portions with respect to the change in the diameter of the coin 2 is obviously larger on the upper side because the center position of the coin surface of the coin 2 changes in the height direction. That is, in the first sensor 5, the number of magnetic fluxes that are input by wrapping around from the transmission coil 5a to the reception coil 5b greatly depends on the diameter of the coin 2.
The characteristic data (value A) of the sensor 5 is better than the second sensor 6
The degree of change with respect to the diameter of the coin 2 is larger than the characteristic data (value B) of. That is, two characteristic data (A and B) having different degrees of change can be obtained for one coin. Therefore, the processed data obtained by processing both characteristic data by the CPU 11 becomes a unique numerical value corresponding to the diameter of the coin 2. Therefore, by comparing the processed data with the reference data, the diameter of the coin 2 can be accurately determined. It is possible to determine.

On the other hand, both characteristic data A and B also change due to the positional deviation in the width direction when the coin 2 rolls in the coin passage 4. However, by making both of these characteristic data processing data (A-B or A / B) based on both characteristic data of the first and second sensors 5 and 6, this change is offset, and even in this case , It becomes possible to accurately determine the authenticity and type of coins.

Next, the CPU 11 causes the value B of the received magnetic field strength.
From F and D, for example, F = D−B is calculated. This calculation result is compared with the reference data stored in advance corresponding to this calculation result, and the type of coin is discriminated in the same manner as the discrimination method described above. This is to discriminate the coin 2 mainly based on the features near the edge of the coin 2. Specifically, the first sensor 5 and the second sensor 6 are displaced from each other in the upstream and downstream directions of the coin passage 4, and are respectively located at positions simultaneously facing the coin surface of the rolling coin 2. It is arranged. That is, since the two sensors 5 and 6 are arranged so that the time for detecting the characteristic data thereof is different, the coin 2 when passing through the point 23 is at the position of the dotted line Y in FIG. Therefore, the reception magnetic field strength of the first sensor 5 is
The number of magnetic fluxes directly input from the transmitting coil 5a to the receiving coil 5b is stable to a certain degree and thus is not so much influenced by the characteristics near the edge of the coin 2, whereas the second sensor 6
The magnetic field strength of the receiving magnetic field of 1 is greatly influenced by the characteristics near the edge of the coin 2, for example, the presence or absence of a nick since the magnetic flux passing directly around the edge of the coin 2 and the magnetic flux due to the wraparound are input to the receiving coil 6b. Therefore, by checking the received magnetic field strength of the second sensor 6 at this time, the coin identification device 1
It is possible to obtain characteristic data based on the shape of the edge of the coin 2, and it is possible to discriminate the coin based on the portion of the coin 2 having the distinctiveness. Therefore, the distinction can be made also by comparing the characteristic value D with the reference data stored in advance corresponding to the characteristic value D.

Since the change in the value of the received magnetic field strength is usually small at the position of the point 24, the received magnetic signal is amplified in the signal conversion circuit 12 so that the coin 2 can be identified more easily. ing. Further, the frequency of use of the second sensor is set higher than the frequency of use of the first sensor 5 so that the influence of the vicinity of the edge of the coin 2 becomes greater.

Further, the CPU 11 compares the received magnetic field strength H with the reference data stored corresponding thereto to determine the material, and also the received magnetic field strengths F and G.
The average value is calculated and compared with reference data stored in advance corresponding to this average value to determine the shape. By using this average value, the shape and material of the coin 2 can be accurately identified even when the coin 2 bounces on the coin passage 4.

This discrimination principle is based on the following reasons. That is, as shown in FIG. 3, when the coin 2 is rolling normally, the point 23 is equal to the point 2
It is always earlier than 5 in time. Therefore, the value F
Is always greater than the value G. But coin 2
When the coin bounces right above the coin passage 4, the rising slope of the received magnetic field strength of the first sensor 5 shown in FIG. 3 becomes gentle and the rising slope of the second sensor 6 becomes tight, and the point 23 becomes the point. It will be later than 24 in terms of time. Therefore, the value F becomes a level smaller than the value G, and if the values F and G are used as the characteristic data of the third sensor 7 as they are, the characteristic data becomes inaccurate. However, the average value of the values F and G usually does not change much.
This is because the first sensor 5 and the second sensor 6 are located at positions substantially symmetrical with respect to the locus X, and thus when the coin 2 bounces, the value of the characteristic sensor of the first sensor 5 is the magnetic field of the coin 2. Since the degree of shielding becomes large, it becomes small, and the second sensor 6
This is because the value of the characteristic data of 1 has a relationship in which the value of the characteristic data increases because the degree of shielding decreases. Therefore, in this case, the value of the characteristic data of the third sensor 7 for the point 23 becomes small, while the value of the characteristic data of the third sensor 7 for the point 25 becomes large. Therefore, when the two are averaged, the changes cancel each other out and the coin 2
Is substantially equal to the average value of the third sensor 7 when B does not bounce. Therefore, by using this average value and comparing with the reference data, the shape of the coin 2 can be accurately identified even when the coin 2 bounces. Further, the material of the coin 2 can be accurately identified from the value H of the third sensor 7 without increasing the number of sensors. That is, even when the coin 2 bounces on the coin passage 4, the influence can be reduced, and the values F and G can be reduced.
It is possible to know the falling slope of the received magnetic field strength of the third sensor 7 from the average value of H and the value H, and it is possible to accurately identify the authenticity and type of the coin 2, and the fact that the coin 2 has bound Can also be detected.

As described above, according to this embodiment, the influence of the magnetic field based on the outer shape and material of the coin 2 can be accurately detected. Therefore, when there is a slight difference in the outer shape of the coin 2, the coin Even if there is a deviation in the rolling position of the coin or the coin 2 bounces, it is possible to identify the authenticity or the type of the coin 2.

The present invention is not limited to the above embodiment. For example, the application of the coin identifying device 1 is not limited to vending machines, but is widely applied to coin sorters such as currency exchange machines, and the position of the sensor is not limited to this embodiment. It is possible to make appropriate modifications within the scope of the present invention.

Further, the number of sensors is not limited to this embodiment, and the number of sensors corresponding to the first and second sensors may be increased, for example.

[0041]

As described above, according to the coin discriminating apparatus of the present invention, it is possible to accurately discriminate the authenticity and type of coins without increasing the accuracy of the sensor and the number of sensors used.

[Brief description of drawings]

FIG. 1 is a diagram showing a cutting side view of a coin identifying device according to the present invention.

FIG. 2 is a diagram showing an electric circuit of a coin identifying device according to the present invention.

FIG. 3 is a diagram for explaining characteristic data.

FIG. 4 is a diagram for explaining an arrangement state of sensors.

[Explanation of symbols]

 1 coin discriminating device 2 coin 4 coin passage 5 first sensor 6 second sensor 7 third sensor 11 CPU 13 detection circuit 14 detection circuit 15 detection circuit X locus

Claims (3)

[Claims] 1. A first magnetic sensor and a second magnetic sensor, each of which faces a coin surface of a coin rolling on a rolling surface of a coin passage for rolling a coin and detects an influence of the coin on a magnetic field. There is a processing unit that generates processing characteristic data based on the characteristic data detected by the first and second magnetic sensors, and a determination unit that compares the processing characteristic data with the reference data to determine the authenticity and type of coins. Then, the detection end of the first magnetic sensor is arranged above the locus drawn by the center of the coin surface of the receiving minimum diameter coin rolling in the coin passage, and the detection end of the second magnetic sensor is arranged on the locus. A coin identification device, which is arranged on the lower side of the coin. 2. A first magnetic sensor and a second magnetic sensor, which face a coin surface of a rolling coin on a rolling surface of a coin passage for rolling a coin and detect the influence of the coin on a magnetic field, respectively. A processing unit that generates processing characteristic data based on the characteristic data detected by the second magnetic sensor when the characteristic data detected by the first magnetic sensor has a preset value, and compares the processing characteristic data with the reference data. And a discriminating unit for discriminating the authenticity and the type of the coin, and the detection ends of the first and second magnetic sensors are displaced from each other in the upstream and downstream directions of the coin passage, and A coin discriminating device, wherein the coin discriminating devices are arranged at positions that simultaneously face coin faces of moving coins. 3. A first magnetic sensor, a second magnetic sensor, and a third magnetic sensor, which face a coin surface of a rolling coin on a rolling surface of a coin passage for rolling a coin and respectively detect an influence of the coin on a magnetic field. 2 detected by the third sensor when the characteristic data detected by the magnetic sensor and the first and second magnetic sensors have preset values.
The first magnetic field, the second magnetic field, and the third magnetic field. The detection end of the sensor is disposed at a position which simultaneously faces the coin surface of the rolling coin, and the detection end of the first magnetic sensor is arranged to roll the coin surface of the coin having the smallest receiving diameter. The coin discriminating apparatus is arranged above the locus drawn by the center of the coin, and the detection end of the second magnetic sensor is arranged below the locus.