JPH09161119A - Coin identifying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coin identifying device with which a space can be reduced and the denominations of coins can be stably identified in spite of dispersion caused by adjustment. SOLUTION: Concerning a photosensor for optically detecting the outer diameter of coin and a magnetic sensor for magnetically detecting the material or the like of coin, a light source 24, secondary cores 34 and 35 around which 2nd secondary coils 36 and 37 are wound, and slit 25 are arranged in order on the upside of carrier path. Besides, on the downside of carrier path facing the light source 24 each other, a primary core 31 is arranged while surrounding a lens 26 at the central part and winding a primary coil 32 and a 1st primary coil 33 and further downwards, a line sensor 27 is installed on a substrate 28. Besides, when the output of magnetic sensor is high, the output result amplified by a 1st adjusting circuit 52 is inputted to an A/D converter 53 but when the output of magnetic sensor is low, the output result amplified by a 2nd adjusting circuit 53 is inputted and based on these results, a CPU 55 discriminates the denomination of coin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coin discriminating apparatus for discriminating a coin type in a coin processing machine for sorting coins by type.

[0002]

2. Description of the Related Art In a coin processing machine currently operating in the field, an optical sensor for detecting the diameter of a coin and the material of the coin are used, as in the device described in Japanese Patent Application Laid-Open No. 7-160922. The type of coin is identified by an identification device including a magnetic sensor for detecting the coin.

Conventionally, in the magnetic sensor as described above, the output level of the magnetic sensor input to the A / D converter is a value within a predetermined range like the device described in Japanese Patent Laid-Open No. 6-309545. The volume is adjusted by the final adjustment amplifier circuit. As a method for adjusting the volume level (amplification factor) of the amplifier circuit for final adjustment, there is an adjustment method based on the output level obtained by using the test piece.

Further, in recent years, in addition to detecting elements such as material, diameter or presence / absence of holes, detection of unevenness (jagged) or surface pattern engraved on the side surface of a coin has attracted attention. To detect, new element detection sensors tend to be added to the identification device.

[0005]

However, in the conventional apparatus, the adjusting method using the test piece is performed at a low output level when adjusting using a material having a high conductivity, that is, a high output level, as the test piece. Misalignment occurs, and a coin with a low output level such as a copper coin is erroneously detected. In addition, if a material having a low conductivity, that is, a low output level is used as the test piece for adjustment, there is a problem that a shift occurs at a high output level and a coin having a high output level is erroneously detected.

Further, in addition to the conventional installation space for the detection sensor, a new element detection sensor is added, so that the identification device itself becomes large in size, and there is a problem that other mechanical module space is pressed.

Therefore, according to the present invention, it is possible to stably identify the type of coin, irrespective of the variation caused by adjustment.
An object of the present invention is to provide a coin identification device that can reduce the space.

[0008]

In order to achieve the above object, a coin discriminating apparatus according to claim 1 of the present invention magnetically conveys coins conveyed by a conveying means and coins conveyed by the conveying means. A magnetic sensor for detecting, a first adjusting means for adjusting the output of the magnetic sensor by amplifying the output of the magnetic sensor with a first amplification rate, and a second amplification rate of the output of the magnetic sensor different from the first amplification rate. It is provided with a second adjusting means for amplifying and adjusting with the above, and a judging means for judging the kind of the coin carried by the carrying means based on the output result of the first or second adjusting means.

According to the above-mentioned structure of the first aspect of the present invention, the output of the magnetic sensor for detecting the coin conveyed by the conveying means is amplified by the first adjusting means with the first amplification factor. Then, the second adjusting means amplifies and adjusts with the second amplification factor, and the discriminating means discriminates the type of coin based on the output result of the first or second adjusting means. As a result, the type of coin can be stably identified without being affected by the variation in output caused by the adjustment of the magnetic sensor.

In order to achieve the above object, a coin identification device according to a second aspect of the present invention is a coin discriminating device and a magnetic sensor for magnetically detecting a coin conveyed by the conveying device. And a first adjusting means for adjusting the output of the magnetic sensor by amplifying it with a first amplification factor, and the magnetic sensor is provided in parallel with the first adjusting means, and the output of the magnetic sensor is provided. Second adjusting means for amplifying and adjusting the signal with a second amplification rate different from the first amplification rate, and the first or the second based on the output of the magnetic sensor.
Discriminating means for discriminating the kind of coins carried by the carrying means from the output result of the adjusting means.

According to the second aspect of the present invention described above, the present invention provides the first and second adjusting means provided in parallel with respect to the output from the magnetic sensor for detecting the coin carried by the carrying means. Then, the coins are amplified and adjusted by the first and second amplification factors, respectively, and the type of coin is discriminated by the discriminating means from the output result of the first or second adjusting means based on the output from the magnetic sensor. As a result, the type of coin can be stably identified without being affected by the variation in output caused by the adjustment of the magnetic sensor.

In order to achieve the above object, a coin discriminating apparatus according to a fourth aspect of the present invention has a conveying means for conveying coins, a coil made of a magnetic material and wound with a central opening. A magnetic sensor having a tubular core for magnetically detecting a coin carried by the carrying means, and a composite sensor integrated with the magnetic sensor so that the optical axis passes through the opening of the tubular core of the magnetic sensor. An optical sensor for irradiating the coin conveyed by the conveying means with light to optically detect a light shielding area of the coin, and a discriminating means for discriminating the kind of coin from the outputs of the magnetic sensor and the optical sensor. It is equipped with.

According to the above-mentioned structure of the present invention, according to the present invention, the magnetic sensor and the optical sensor are integrally provided so that the optical axis of the optical sensor passes through the opening of the cylindrical core of the magnetic sensor. The coin carried by the means is detected, and the type of coin is discriminated by the discriminating means from the outputs of the magnetic sensor and the optical sensor. This makes it possible to configure the magnetic sensor and the optical sensor in a space smaller than the conventional one,
It is possible to stably identify the type of coin.

In order to achieve the above object, a coin discriminating apparatus according to a fifth aspect of the present invention is a coin discriminating device which conveys coins and a magnetic material which is provided on one side of the conveying device and is made of a magnetic material. A tubular primary core having an opening, a tubular secondary core made of a magnetic material and provided at the other side of the conveying means facing the primary core and having an opening in the center, A magnetic sensor having an exciting primary coil wound around a secondary core and a secondary coil wound around the secondary core, and magnetically detecting a coin carried by the carrying means. The opening of the primary core of the magnetic sensor and 2
A light source that is arranged so that the optical axis passes through the opening of the next core and irradiates the coin conveyed by the conveying means with light, and a photoelectric detector that detects a light-shielding area in which the light emitted from the light source is blocked by the coin. An optical sensor having a conversion element, which optically detects a coin carried by the carrying means, and a judging means for judging the type of coin from the outputs of the magnetic sensor and the optical sensor. .

According to the above-mentioned structure of the present invention, the present invention is provided so that the optical axis of the optical sensor passes through the openings of the cylindrical primary core and the cylindrical secondary core of the magnetic sensor to illuminate the coin. The magnetic sensor and the optical sensor provided detect the coin carried by the carrying means, and the discriminating means discriminates the type of coin from the outputs of the magnetic sensor and the optical sensor. As a result, the magnetic sensor and the optical sensor can be formed in a space smaller than the conventional one, and the type of coin can be stably identified.

In order to achieve the above object, a coin identifying device according to a sixth aspect of the present invention has a carrying means for carrying a coin and a tubular core made of a magnetic material and having a coil wound around it. A magnetic sensor for magnetically detecting the coin carried by the carrying means, and a first adjusting means for amplifying and adjusting the output of the magnetic sensor with a first amplification factor,
Second adjusting means for amplifying and adjusting the output of the magnetic sensor with a second amplification rate different from the first amplification rate, and the optical axis so as to pass through the opening of the cylindrical core of the magnetic sensor. An optical sensor that is provided integrally with the magnetic sensor and that irradiates the coin conveyed by the conveying means with light to optically detect a light shielding area of the coin, and the first or second optical sensor.
The discriminating means for discriminating the type of coin from the output of the adjusting means and the output of the optical sensor.

According to the sixth aspect of the present invention described above, according to the present invention, the magnetic sensor and the optical sensor are provided integrally so that the optical axis of the optical sensor passes through the opening of the cylindrical core of the magnetic sensor, and the conveyance is carried. The coins carried by the means are detected.
The output of this magnetic sensor is amplified by the first adjusting means by the first amplification factor and adjusted, and the second adjusting means makes the second adjustment.
It is amplified and adjusted with the amplification factor of 1. and the discriminating device discriminates the type of coin from the output result of the first or second adjusting device and the output of the optical sensor.

Thus, the type of coin can be stably identified without being affected by the variation in the output caused by the adjustment of the magnetic sensor, and the identification means including the magnetic sensor and the optical sensor can be provided in a space smaller than the conventional one. Can be composed of

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 schematically shows the configuration of the coin processing device A according to this embodiment. As shown in FIG. 2, when coins C of various mixed denominations to be processed are put into the tray 1, the tray 1 rotates, and the coins C are fed to the coin feeding portion 2 located below the tray 1. Let it fall. Then, the coin feeding unit 2 feeds the coins C dropped from the tray 1 one by one and sends them to the coin transport path 3.

The coin conveying path 3 forcibly conveys the coins C fed from the coin feeding portion 2 to the coin discriminating device 6 while pressing the coins C against the conveying surface 4 by the conveying belt 5. The coin identifying device 6 identifies the authenticity, type, etc. of the coin C conveyed by the identifying process described later, and outputs the identification result.

In this embodiment, the conveyor belt 5 does not pass through the coin discriminating device 6. Therefore, the coin C that has been conveyed to the coin discriminating device 6 passes through the coin discriminating device 6 by the inertia force that accompanies the conveying force of the conveying belt 5 until then.

The coin C that has passed through the coin discriminating device 6 is forcibly conveyed again to the coin sorting section 7 by the coin conveying path 3. Then, the coin sorting unit 7 sorts the coins C transported by the coin transport path 3 by denomination based on the identification result of the coin identifying unit 6. This coin sorting unit 7 is, for example, a coin C.
.. corresponding to each denomination, and coins are selected by selectively opening and closing the shutters 8.

The coins C sorted by the coin sorting unit 7 are temporarily held by the coin holding unit 9 provided below the shutters 8, ....
For example, when a transaction is established, the temporarily held coin C is inserted into the coin type safe 10 provided at the lower part of the temporary holding section 9.

The above description is for depositing money, but for dispensing, the coin C is taken out from the coin type safe 10 and paid out. That is, the coin C is the take-out mechanism 11
After being taken out from the coin type safe 10, the coins are conveyed from the horizontal conveying path 12 to the coin feeding section 2 by the vertical conveying path 13.

Further, the coin C conveyed to the coin feeding section 2
When fed again from the coin feeding unit 2, the coins pass through the coin identifying device 6 and the coin sorting unit 7, and pass from the reject gate 14 provided at the rearmost portion of the coin transporting path 3 to the vertical transporting path 16 via the horizontal transporting path 15. It is conveyed to and is withdrawn to the tray 1. Replenishment coins are stored in the clerk safe 17, and coins C that cannot be stored in the denomination-specific safe 10 are stored in the overflow safe 18.

Next, FIGS. 3 and 4 are diagrams schematically showing the arrangement of the coin discriminating section 20 of the coin discriminating device 6 as the coin discriminating device according to the present invention. As shown in FIG. 3, the coins C fed out one by one from the coin feeding unit 2 and guided to the coin conveying path 3 of the coin identifying unit 20 are illustrated with the central portion thereof being pressed against the conveying surface 4 by the conveying belt 5. It is transported in the direction of the arrow. In the vicinity of the start end of the transport surface 4, a transparent plate (for example,
(Sapphire glass) 21 is fixed, and at this sapphire glass 21 part, an optical sensor 22 for detecting the light-shielding area of the coin C being conveyed, and a magnetic sensor for magnetically detecting the material, thickness, etc. of the coin C are provided. A coin discriminating unit 20 composed of 23 and 23 is provided.

The coin discriminating section 20 in which the optical sensor 22 and the magnetic sensor 23 are integrally provided is constructed as shown in FIG. The optical sensor 22 is provided with a rod-shaped light source 24, which is formed on the upper side of the sapphire glass 21 by arranging a large number of issuing diodes in a direction orthogonal to the transport direction of the coin C. A slit 25 that guides the light from the light source 24 onto the sapphire glass 21 is provided between the light source 24 and the sapphire glass 21. Below the sapphire glass 21 facing the light source 24, a CCD line sensor 27 as a photoelectric conversion element is installed on a substrate 28 via a rod-shaped lens (cell hook lens) 26 for collecting light. It is fixed by a resin case 29.

Further, in the magnetic sensor 23, as shown in FIG. 5, a primary core 31 made of a magnetic material and formed in the shape of a rectangular parallelepiped is provided below the sapphire glass 21 with the self-hook lens 26 as a central portion. It is arranged so as to surround it. In addition, the primary core 31 has an exciting primary coil 3
2 and a first secondary coil 33 that is electromagnetically induced from the primary coil 32 are respectively wound.

On the other hand, above the sapphire glass 21,
The light source 24 and the slit 2 of the optical sensor 22 made of a magnetic material
The secondary cores 34 and 3 which are separated from each other between 5 and in the center.
5 are arranged, and each is formed in a rectangular parallelepiped cylindrical shape so that the optical axis of the light source 24 passes therethrough. Also, this secondary core 3
Second secondary coils 36 and 37 are wound around the coils 4 and 35, respectively. Then, the second secondary coils 36 and 37
The magnetic flux generated from the primary coil 32 and transmitted through the coin C is detected. The primary coil 32 is
It is adapted to be excited by a sine wave signal from the sine wave oscillator 38.

With this structure, when the coin C is conveyed on the coin conveying path 3, the light from the light source 24 passes through the central portions of the cylindrical secondary cores 34 and 35 and the slit 25, and the coin is conveyed. The light is blocked by the coin C on the road 3. Then, the light is focused by the lens 26 and forms a shadow of the coin C on the light receiving surface of the line sensor 27. In this case, the output of the line sensor 27 is adapted to detect the outer diameter (diameter) of the coin C by measuring the length of the portion (shadow) where the light is blocked by the coin C.

When the coin C is conveyed on the coin conveying path 3, the optical sensor 22 detects the outer diameter of the coin C, and at the same time, the magnetic flux amount interlinking with the second secondary coils 36 and 37 becomes large. fluctuate. Normally, the magnetic flux is linked from the primary core 31, but when the coin C comes over the magnetic sensor 23, the magnetic flux is blocked, and thus it becomes difficult to link. As described above, this embodiment uses the magnetic sensor 23 of the transmitted magnetic flux detection type,
Based on fluctuations in the amount of magnetic flux, not only the material of coin C
It is designed to detect even the difference in thickness and area.

Next, FIG. 1 shows the configuration of a processing circuit for processing the output signal of the magnetic sensor 23. A predetermined AC voltage is applied to the primary coil 32 from a sine wave oscillator 38. Then, the respective outputs of the first secondary coil 33 and the second secondary coils 36 and 37 are input to and amplified by amplifier circuits (for example, differential amplifier circuits) 41, 42 and 47, respectively. Next, the outputs from the amplifier circuits 41, 42 and 47 are rectified by the rectifier circuits 43, 44 and 48, smoothed through the low pass filters (LPF) 45, 46 and 49, input to the arithmetic circuit 50, and further adjusted. It is input to the means 51.

In the arithmetic circuit 50 and the adjusting means 51, for example, Vout = kanp * {k1 * V49- (k2 * V45 + k3 * V
46)}, and adjust to a predetermined level. here,
V49 is the output of the low-pass filter 49, V45 is the output of the low-pass filter 45, V46 is the output of the low-pass filter 46, k1, k2, and k3 are the arithmetic constants of the arithmetic circuit 50, and k.
anp is an amplification constant (amplification factor) of the adjusting means 51.

Here, in this embodiment, the adjusting means 51 is composed of a first adjusting circuit 52 and a second adjusting circuit 53 which are arranged in parallel. The first adjustment circuit 52 is an object to be detected having a high output level (that is, sensitivity) from the magnetic sensor 23, which is a transmitted magnetic flux amount detection type sensor.
This is an amplification circuit for adjusting a yen), a bronze coin (10 yen), a brass coin (5 yen), and the like with a first amplification factor. The second adjustment circuit 53 is a white coin (50 yen, 100 yen, which is an object to be detected having a low output level (sensitivity) from the magnetic sensor 23.
This is an amplifier circuit for adjusting with a second amplification factor for (yen, 500 yen) and the like. Further, by disposing a large number of these adjusting circuits in parallel and providing an adjusting circuit for adjusting a specific foreign currency to be excluded, the foreign currency exclusion rate is further improved.

The low-pass filters 45, 46, 4
The output from 9 is supplied to the first adjusting circuit 52 and the second adjusting circuit 53 via the arithmetic circuit 50 to obtain the first amplification factor and the second amplification factor.
C, which will be described later, after being calculated and adjusted with the respective amplification factors, input to the A / D converter 54 and converted into a digital signal.
It is sent to PU55. In addition to the outputs of the first adjustment circuit 52 and the second adjustment circuit 53, the outputs from the low-pass filters 45, 46, 49 are also input to the A / D converter 54 and converted into digital signals.

The output of the A / D converter 54 is input to the CPU 55 as the output data of the magnetic sensor 23. C
When identifying the coin C, the PU 55 reads (samples) the output of the magnetic sensor 23 at predetermined intervals and sequentially stores the sampling data in the RAM 57. The detection of the maximum value is completed by determining the maximum value by detecting the maximum value by sequentially comparing the sampling data and storing the maximum value in the RAM 57, and determining the maximum value when the stored value is lower than the stored maximum value by a predetermined width (amount). .

Further, the CPU 55 stores a ROM for storing the data sampling, each detection process, the determination process and the like.
56 is connected to perform control of the entire control system such as identification processing of the type and authenticity of the coin C, control processing of various actuators of the coin processing device based on the identification processing, and the like. The determination reference value data such as the magnetic material and the outer diameter for each denomination of the coin C is stored in the RAM 57 in the form of a table.

Here, the magnetic sensor 2 accompanying the transport of each coin
The output waveform of No. 3 has a gentle mountain shape as shown in FIG. Since the output of the magnetic sensor 23 is the integral value of the magnetic flux, it has the gentle mountain shape as described above, and the peak value detection is easy. As is well known, the detection principle is to compare the amount of eddy current generated on the surface of a coin with respect to an alternating magnetic field.The amount of eddy current is determined by the conductivity of the material of the coin, and the small amount of white copper coin with low conductivity is small. , Aluminum coins and bronze coins, which have high conductivity, become large. Therefore, the output of the magnetic sensor 23 increases as the coin has a higher conductivity.

Further, in this embodiment, since it is the transmitted magnetic flux amount detection type sensor, not only the material but also the area and the thickness can be comprehensively detected. Therefore, the performance of the material itself has a size relation of 1 yen> 10 yen> 5 yen> (500 yen, 100 yen, 50 yen). From the point of view including area and thickness, the relationship is 10 yen> 1 yen> 5 yen> 500 yen> 100 yen> 50 yen.

As shown in FIG. 7, the characteristic curve relating to the coin detection of the magnetic sensor 23 as described above has a small absolute value of output fluctuation in the case of a material having a small electric conductivity such as white copper, aluminum, bronze, In the case of a material having a large conductivity such as brass, the absolute value of output fluctuation becomes large. The reference characteristic curve c1 of the magnetic sensor 23, which serves as a reference, has an output value a on the adjustment point 1 (mainly the conductivity of white copper coins) and an output value b on the adjustment point 2 (the conductivity of aluminum coins). It detects both values of.

However, such a characteristic curve peculiar to the sensor is slightly different for each magnetic sensor, and one magnetic sensor has an output value a at the adjustment point 1 and an output value at the adjustment point 2 as shown by the reference characteristic curve c1. Both b cannot be output, and it is difficult to accurately detect them.

That is, when the magnetic sensor is adjusted using a test piece having a high output level, the sensor detection value when the white coin is detected becomes lower than the reference value, as shown in FIG. Therefore, like the characteristic curve c2, the output value b is output at the adjustment point 2, but at the adjustment point 1, the output value a cannot be output due to the deviation of the curve. On the contrary, when the magnetic sensor is adjusted using the test piece having the low output level, the sensor output value when the aluminum coin or the like is detected becomes lower than the reference value. Therefore, like the characteristic curve c3, the output value a is output at the adjustment point 1, but the output value b cannot be output at the adjustment point 2 due to the deviation of the curve.

Therefore, in the present embodiment, the magnetic sensor 2
3 has an adjusting means 50 for adjusting an output result with an amplification factor according to the output of No. 3, and a first adjusting circuit 52 for amplifying a high output level to a predetermined value and a second adjusting circuit 52 for amplifying a low output level to a predetermined value. And an adjusting circuit 53. This first adjustment circuit 52
Adjusts aluminum coins, bronze, and brass coins having a high output level to a predetermined value with a first amplification factor, and the second adjusting circuit 53 mainly uses white copper coins having a low output level. The second amplification factor for amplification to a predetermined value is adjusted.

Therefore, the CPU 55 has the low-pass filters 45, 46, 49 converted by the A / D converter 54.
By comparing the output of to a preset reference value,
When the output level is higher than the reference value, the output value of the first adjusting circuit 52 is selected, and when the output level is lower than the reference value, the output value of the second adjusting circuit 53 is selected. Are sampled and used for determining the type of coin C and authenticity.

Here, an example of the output adjustment of the magnetic sensor 23 will be described. First, in a state where there is no detected object (coin C, test piece, etc.) on the transparent plate 21 of the sensor detection surface, the amplifier circuit 4
The rectification circuit 4 of each secondary coil 33, 34, 35 is adjusted by adjusting each amplification constant of 1, 42, 47 separately.
The rectified outputs of 3, 44 and 48 are all set to "300h". Here, h (hex) represents a hexadecimal number and represents a value after conversion by the A / D converter 54.
With a 10-bit A / D converter with a reference signal of 5V,
[5 V (reference voltage) = 1024 decimal = 400 h]. Next, by adjusting the arithmetic constant of the arithmetic circuit 50, the final amplified output, that is, the output of each adjustment circuit 51, 52 provided in the subsequent stage of the arithmetic circuit 50 is set to "1h".

Then, a predetermined test piece is set at a predetermined position on the transparent plate 21, and the amplification constants of the adjusting circuits 51 and 52 are adjusted so that the outputs of the adjusting circuits 51 and 52 have the predetermined values. That is, in the case of the adjustment circuit 51 for an object having a high output level, a test piece such as aluminum or brass is used as the transparent plate 2.
1 is set to a predetermined position and the output of the adjusting circuit 51 is 380
The amplification constant of the adjustment circuit 51 is adjusted so that it becomes h. On the other hand, the adjustment circuit 5 for an object having a low output level
In the case of 2, a test piece such as white copper or nickel silver is set at a predetermined position on the transparent plate 21, and the amplification constant of the adjusting circuit 52 is adjusted so that the output of the adjusting circuit 52 becomes 200h.

Next, the operation of the coin discriminating section 20 having the above-mentioned structure will be described. First, the outer diameter detection processing of the coin by the optical sensor 22 will be described. Line sensor 27
The output signal of is output at a high level at the light shielding portion of the coin C and at a low level at the light incident portion for each scanning. Therefore, when the high level signal of the light shielding part is output,
The length of this shaded area is electrically measured and the maximum value is stored in the RAM 57. Here, the sensor output accompanying the conveyance of each coin C is as shown in FIG.

The output processing by the magnetic sensor 23 will be described. Secondary coils 36 and 37 of the magnetic sensor 23
Is amplified by the amplifier circuits 41 and 42, rectified by the rectifier circuits 43 and 44, and the low-pass filter 45,
The calculation circuit 50 and the first adjustment circuit 5 are smoothed by 46.
2, input to the second adjustment circuit 53, and the above-described arithmetic processing and adjustment are performed.

That is, the outputs from the low-pass filters 45 and 46 are adjusted by the first adjusting circuit 52 via the arithmetic circuit 50 at the first amplification factor for the high output level and the second adjusting. The circuit 52 adjusts the second amplification factor for the low output level, and the first and second adjustment circuits 5
The output results of 2, 53 are converted into digital signals by the A / D converter 54 and sent to the CPU 55 described later.

The CPU 55 has the low-pass filters 45, 4
The output from 6 is compared with a preset reference value. When the output level is higher than the reference value, the first
The output value of the adjusting circuit 52 is selected, and when the output level is lower than the reference value, the output value of the second adjusting circuit 53 is selected. A / D converter 54 of selected adjustment circuit
Is sampled at a predetermined interval, and the maximum value (peak value) is detected by successive comparison and stored in the RAM 57. Here, the waveform of the output accompanying the transportation of each coin has a gentle mountain shape as shown in FIG.

In this way, when the maximum value of the output of the magnetic sensor 23 (maximum value of material detection) is detected, the CPU 55
Selects an output value according to the output level of the magnetic sensor 23. That is, when the output level is higher than the preset reference value, the output value of the first adjustment circuit 51 is selected,
When the output level is low, the output value of the second adjusting circuit 52 is selected.

Thus, the optical sensor 22 as shown in FIG.
When the maximum value of the outer diameter (the maximum value of the outer diameter detection) is detected from the output of the above, and the maximum value of the output (the maximum value of the material detection) of the magnetic sensor 23 as shown in FIG. 6 is detected, it is stored in the RAM 57. To do. Then, the CPU 55 determines which range each belongs to by comparing the preset various determination reference value data with each stored maximum value, and based on the determination results, the coin C The type, authenticity, etc. are identified.

As described above, in the present embodiment, the optical sensor and the magnetic sensor are hierarchically arranged in the direction orthogonal to the coin transport direction and are combined, so that the same detection performance as in the past can be obtained. It can be configured with half the space of the coin identifying device. Further, with such a configuration, since the coin detection spots of both the optical sensor and the magnetic sensor are coincident with each other, the detection can be performed substantially at the same time and the detection time can be shortened.

Further, in the present embodiment, since the output of the magnetic sensor is amplified by using the adjusting means adjusted by the amplification factor according to the level output from the magnetic sensor, the adjustment of the magnetic sensor is accompanied. It is possible to adjust the generated output variations, eliminate the detection deviation, and perform stable coin identification. In the present embodiment, this adjusting means is composed of first adjusting means for accurately adjusting the high output result of the magnetic sensor and second adjusting means for accurately adjusting the low output result of the magnetic sensor. However, the present invention is not limited to this, and a configuration in which the output of the magnetic sensor is divided into a plurality of stages and a plurality of adjusting circuits for adjusting the amplification rate according to the output of each stage is provided is also in line with the gist of the present invention.

[0055]

As described above, according to the present invention, the space can be reduced, and the coin type can be stably identified regardless of the variation due to the adjustment.

[Brief description of the drawings]

FIG. 1 is a coin identifying device A according to an embodiment of the present invention.
The front view which shows the structure of the coin identification part 20 of the coin identification device 6 used for.

FIG. 2 is a coin identifying device A according to an embodiment of the present invention.
FIG.

3A and 3B schematically show the configuration of a coin discriminating unit 20 of a coin discriminating apparatus 6, where FIG. 3A is a side view and FIG. 3B is a top view.

FIG. 4 is a block diagram showing a configuration of an electric circuit of a magnetic sensor 23.

FIG. 5 schematically shows the configuration of a magnetic sensor 23,
(A) figure is a top view, (b) figure is a front view, (c) figure is a bottom view.

FIG. 6 is a diagram showing an output waveform of a magnetic sensor 23 accompanying the transport of each coin.

FIG. 7 is a diagram for explaining a characteristic curve of a magnetic sensor.

FIG. 8 is a diagram showing a distribution of sensor output values when coins are detected by a magnetic sensor.

FIG. 9 is a diagram showing an output waveform of the optical sensor 22 accompanying the transportation of each coin.

[Explanation of symbols]

A: coin processing device, C: coin (coin), 1 tray, 2 coin delivery section, 3 coin transport path, 4 transport surface, 5 transport belt, 6 coin Identification device, 7 ... Coin sorting unit, 8 ... Shutter, 9 ... Temporary holding unit, 10 ...
... kind-based safe, 11 ... take-out mechanism, 12,15 ... horizontal transport path, 13,16 ... vertical transport path, 14 ... reject gate, 17 ... personnel safe, 18 ... overflow safe,
20 ... Coin identification part, 21 ... Transparent plate (sapphire glass), 22 ... Optical sensor, 23 ... Magnetic sensor, 24 ...
... light source, 25 ... slit, 26 ... self hook lens, 27 ... line sensor, 28 ... substrate, 29 ... resin case, 31 ... primary core, 32 ... primary coil,
33 ... First secondary coil, 34, 35 ... Secondary core,
36, 37 ... Second secondary coil, 38 ... Sine wave oscillator

Claims (6)

[Claims] 1. A carrying means for carrying a coin, a magnetic sensor for magnetically detecting the coin carried by the carrying means, and a first amplification for adjusting an output of the magnetic sensor by a first amplification factor. Adjusting means, second adjusting means for adjusting the output of the magnetic sensor by amplifying the output of the magnetic sensor with a second amplification rate different from the first amplification rate, and output results of the first or second adjustment means. A coin discriminating device comprising: discriminating means for discriminating the type of coin conveyed by the conveying means based on the above. 2. A carrying means for carrying a coin, a magnetic sensor for magnetically detecting a coin carried by the carrying means, and a first amplification for adjusting an output of the magnetic sensor by a first amplification factor. Adjusting means and the first adjusting means for the magnetic sensor in parallel, and amplifies and adjusts the output of the magnetic sensor by a second amplification rate different from the first amplification rate. A second adjusting means, and a judging means for judging the type of coin carried by the carrying means from the output result of the first or second adjusting means based on the output of the magnetic sensor. Coin identification device. 3. A comparison means for comparing an output of the magnetic sensor with a predetermined value, wherein the determination means is a first adjustment means when it is determined to be larger than the predetermined value based on the comparison of the comparison means. The type of coin carried by the carrying means is discriminated based on the output result adjusted by, and when it is judged to be smaller than a predetermined value, the coin is carried by the carrying means based on the output result adjusted by the second adjusting means. 2. The coin identifying device according to claim 1, further comprising control means for controlling so as to determine the type of coin to be used. 4. A coin transporting means for transporting coins, and a cylindrical core wound with a coil made of a magnetic material and having an opening at the center, and magnetically detecting the coins transported by the transporting means. And a magnetic sensor that is provided integrally with the magnetic sensor so that the optical axis passes through the opening of the cylindrical core of the magnetic sensor. A coin discriminating device comprising an optical sensor for optically detecting a coin, and a discriminating means for discriminating the type of coin from the outputs of the magnetic sensor and the optical sensor. 5. A carrying means for carrying a coin, a cylindrical primary core provided on one side of the carrying means and made of a magnetic material and having an opening at the center thereof, and the above-mentioned means facing the primary core. A cylindrical secondary core, which is provided on the other side of the conveying means and is made of a magnetic material and has an opening at the center, an exciting primary coil wound around the primary core, and a secondary core wound around the secondary core. A magnetic sensor for magnetically detecting a coin carried by the carrying means, and an optical axis passing through the opening of the primary core and the opening of the secondary core of the magnetic sensor. And a photoelectric conversion element for detecting a light-shielding area in which the light emitted from the light source is blocked by the coin is detected. Optically detect coins carried by Coin identification device, wherein the Manabu sensor, by comprising a discriminating means for discriminating the type of coin from the output of the magnetic sensor and the optical sensor. 6. A carrying means for carrying a coin, a magnetic sensor having a cylindrical core made of a magnetic material and having a coil wound around it, and a magnetic sensor for magnetically detecting a coin carried by the carrying means; A first adjusting means for adjusting the output of the sensor by amplifying it with a first amplification rate; and a second adjusting means for amplifying and adjusting the output of the magnetic sensor with a second amplification rate different from the first amplification rate. Of the adjusting means and the magnetic sensor so that the optical axis passes through the opening of the cylindrical core of the magnetic sensor. The coin conveyed by the conveying means is irradiated with light to shield the area covered by the coin. A coin discriminating device comprising an optical sensor for optically detecting a coin, and discriminating means for discriminating the type of coin from the output of the first or second adjusting means and the output of the optical sensor.