JPH06274735A - Coin processing device - Google Patents

Abstract

PURPOSE:To improve the money dispensing speed by identifying carefully the coins supplied from the outside at the money reception time and then identifying the coins once identified as the correct ones by the least necessary number of sensors at a high speed at the money dispensing time. CONSTITUTION:The coins C drawn out one by from a draw-out part are sent to a transfer path 4 and carried on a conveyor belt 5 with the center part of each coin C pressed onto the path 4. A 1st magnetic sensor 82 is provided on the path 4 to magnetically detect the hole of the coin C together with a diameter detecting sensor 84 which detect optically the diameter of the coin C, and a 2nd magnetic sensor 85 which detects magnetically the material, the diameter and the thickness of the coin C respectively. At the money reception time, the coins C are carefully identified by the sensors 82, 84 and 85. Meanwhile at the money dispensing time, the number of coins C to be drawn out is increased compared with the money reception time. Then the coins C are identified based on the output of both sensors 84 and 85 only and with no use of the sensor 82.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return type coin processing device capable of automatically performing coin depositing and dispensing processing in a financial institution such as a bank.

[0002]

2. Description of the Related Art Conventionally, for example, in a financial institution such as a bank, a coin processing device for automatically depositing and withdrawing coins is installed, and at the time of depositing, the deposited coin is accepted to identify the authenticity and the denomination. , Store them in denomination-specific safes, and take out coins of the required denomination from this denomination-specific safe at the time of withdrawal,
A return type coin processing device is used which is designed to be dispensed.

In such a coin processing device, a coin identifying device for identifying the authenticity or type of coins is a differential transformer type for sequentially detecting the holes of coins from the upstream side of the conveying path for conveying coins. Of the first magnetic sensor, a CCD line sensor (photoelectric conversion element) for detecting the outer diameter of the coin by detecting the light-shielding area by the coin, the magnetic flux passing through the coin, the material of the coin, the diameter of the coin, A second magnetic sensor of a transmitted magnetic flux detection type for comprehensively detecting the thickness and the like is provided.

The first magnetic sensor can detect the material itself of the coin, but it cannot differentiate as much as the second magnetic sensor that can comprehensively detect the diameter, the thickness, etc., that is, it has no classification ability. Detection of coin holes was the main focus.

Under these circumstances, the first magnetic sensor was not always required for identifying only Japanese coins, but foreign coins having very few holes have very few coins. Therefore, foreign coin identification and fake coins ( For example, in identifying game coins, etc.), it had its existence value.

In addition, the same sensor (first magnetic sensor, second magnetic sensor, line sensor) is similarly used for identification both during depositing and dispensing. Furthermore, the amount of coins dispensed at the time of depositing and dispensing was the same.

[0007]

As described above, the same sensor is used for both deposit and withdrawal processing, and
The coins were identified at the same amount of coins to be delivered, that is, at the same identification speed. However, even if we take common sense, it is necessary to carefully take time to identify coins inserted from outside the device, such as deposits, but coins once identified as true coins such as withdrawals are relatively rough. Moreover, it does not matter if it is processed at high speed. Further, in the recent trend of improving the processing speed, there is an urgent need to increase the processing speed of coins.

Therefore, the present invention makes it possible to identify coins, such as coins, which have once been identified as genuine coins, at high speed by using the minimum necessary sensors, and in particular, coins that can greatly improve the withdrawal processing speed. An object is to provide a processing device.

[0009]

DISCLOSURE OF THE INVENTION A coin processing device of the present invention is a coin processing device for depositing and withdrawing coins, and is a feeding means for feeding out coins to be deposited or coins to be dispensed one by one. A conveying means for conveying the coins fed out by the feeding means one by one, and a differential transformer type first magnetic device arranged along the conveying means for magnetically detecting the conveyed coins. A sensor, a second magnetic sensor of a transmitted magnetic flux detection type, and a photoelectric conversion element for optically detecting the diameter of the coin to be conveyed;
First identifying means for identifying the deposited coins carried by the carrying means based on the outputs of the first magnetic sensor, the second magnetic sensor, and the photoelectric conversion element, and the first identifying means. A storing means for sorting and storing the received coins conveyed by the conveying means based on the identification result, a payout amount varying means for increasing the coin payout amount of the payout means at the time of payout, and a storing means A second identification for identifying a coin to be dispensed carried by the carrying means based on each output of the taking-out means for taking out the coin in the inside and sending it to the feeding-out means, the second magnetic sensor, and the photoelectric conversion element. And a payout means for paying out the dispensed coins carried by the carrying means based on the identification result of the second identifying means.

[0010]

When depositing money, for example, the first magnetic sensor detects the hole of the coin, and the second magnetic sensor detects the material and diameter of the coin.
The first magnetic sensor that comprehensively detects the thickness, detects the diameter of the coin with the photoelectric conversion element, and carefully discriminates the coin, and makes the amount of coin dispensed larger than when depositing the coin. Is ignored, and the coins are identified based only on the outputs of the second magnetic sensor and the photoelectric conversion element, so that the amount of coins to be dispensed can be significantly improved, especially when paying out,
The withdrawal processing speed can be greatly improved.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 schematically shows the structure of the coin processing device according to this embodiment. In the figure, reference numeral 1 designates a saucer into which coins of various mixed denominations to be processed are inserted. When a coin is inserted, the tray 1 rotates to drop the received coin to the feeding unit 2 located below. The feeding unit 2 feeds coins dropped from the tray 1 one by one and conveys them to the coin identifying device 3. Coin identification device 3
Identifies the authenticity, type, etc. of the coins conveyed by the identification processing described later, and outputs the identification result.

The coin sent to the coin discriminating device 3 is forcibly conveyed by being pressed against the conveying path 4 by the conveying belt 5, and is sent from the coin discriminating device 3 to the sorting section 6. The conveyor belt 5 is supported on the conveyor path 4 by a conveyor belt support 8 which can be opened and closed in the direction of the arrow A in the figure with a rotating shaft 7 serving as a fulcrum with respect to the conveyor path 4, whereby, for example, when a coin is jammed in the conveyor path. The jammed coins can be removed by opening the conveyor belt support 8 upward.

The sorting unit 6 sorts the coins transported by the transport path 4 and the transport belt 5 by denomination based on the identification result of the coin identifying device 3. The sorting unit 6 is composed of, for example, a plurality of shutters 9, ... Corresponding to each denomination of coins, and selectively opens and closes the shutters 9 ,. There is.

The coins sorted by the sorting unit 6 are held in a temporary holding unit 10 provided at the lower part thereof. For example, when a transaction is established, the temporarily held coins are
It is designed to be inserted into the money-type safe 11 provided in the lower part thereof.

The above description is for depositing money, but for dispensing, coins are taken out from the coin-type safe 11 and paid out. That is, the coin taken out from the coin type safe 11 by the take-out mechanism 19 is conveyed to the left side in the drawing by the horizontal conveying path 12 and further conveyed to the feeding section 2 by the vertical conveying path 13.

The coins conveyed to the feeding section 2 pass through the coin discriminating device 3 and the conveying path 4 from the feeding section 2, and from the reject gate 14 provided at the rearmost portion of the conveying path 4 to the lateral conveying path 1.
It is conveyed to the vertical conveyance path 16 via 5 and is dispensed to the tray 1. Reference numeral 17 is a safe for storing supplementary coins, and 18 is an overflow safe.

FIG. 3 shows an example of arrangement of various sensors in the coin discriminating apparatus 3. In the figure, the coins C fed out one by one from the feeding portion 2 are guided to the transport path 4,
The conveyor belt 5 presses the center of the conveyor belt 4 onto the conveyor path 4 and forcibly conveys it in the direction of the arrow in the figure. A first magnetic sensor 82 is provided via a ceramic plate 81 at the starting end of the transport path 4 and at the center in the width direction. The first magnetic sensor 82 is mainly for magnetically detecting the hole of the coin C.

In front of the first magnetic sensor 82, there is provided a coin detecting sensor 83 including a light emitting diode and a light receiving element for detecting the coin C to be conveyed, and the coin detecting sensor 83 is provided. After detecting the, the identifying operation of the coin C is started.

In front of the first magnetic sensor 82, a coin C
A diameter detecting sensor 84 for optically detecting the diameter of the coin C is provided in front of the diameter detecting sensor 84 for magnetically detecting the material, diameter and thickness of the coin C. Two magnetic sensors 85 are provided.

FIG. 4 shows the structure of the first magnetic sensor 82. The first magnetic sensor 82 is a known differential transformer type magnetic sensor. That is, the exciting primary coil 22 wound around the center of the center core 21 in the longitudinal direction, the two secondary coils 23 and 24 wound around both ends of the primary coil 22, and the center core 21 and a ring core 25 fixed to the outer peripheral portion of the center core 21 to form a magnetic path.

The primary coil 22 is excited by the sine wave signal from the sine wave oscillator 26, and the secondary coils 23 and 24 are excited.
Are electromagnetically induced from the primary coil 22 to generate an output, but they are connected so as to cancel each other.

As a result, when the coin C is not on the sensor, the output is almost zero. However, in reality, they are not completely canceled out, so that a very small value of output is generated, and henceforth, this will be referred to as an offset.

When the coin C comes on the sensor, the balance of the induced voltage between the secondary coils 23 and 24 is lost, and a differential output is produced. This is because the magnetic flux near the coin C is pushed downward by the eddy current generated on the surface of the coin C, so that the induced voltage of the secondary coil 23 on the coin C side is reduced. As is well known, the AC loss depends on the material of the coin C. That is, the conductivity of the white coins, the bronze coins, and the aluminum coins are different, so they are all different.

In the first magnetic sensor 82, the gap from the upper surface of the sensor to the coin C greatly affects the output. Therefore, the shape of the coin C can be detected relatively accurately, and the hole can be easily detected.

However, the ability to identify the material is poor,
It largely depends on the second magnetic sensor 85 which will be described later. However, among foreign coins, there are very few coins with holes, and therefore it is very effective in identifying foreign coins.
The same applies to fake coins (counterfeit coins, game coins, etc.).

FIG. 5 shows the structure of the second magnetic sensor 85. The second magnetic sensor 85 is also a known magnetic sensor. That is, although the entire main body 31 is molded and integrated with resin or the like, the central portion through which the coin C as the object to be detected and the transport path 4 pass and the upper central portion through which the transport belt 5 moves in and out. The department is open.

The primary core (base core) 32 located below the transport path 4 has a primary coil 33 for excitation, and
First secondary coil 3 electromagnetically induced from the primary coil 33
4 is wound. On the other hand, a secondary core (side core) 35, which is arranged above the transport path 4 so as to be separated left and right at the center,
Second secondary coils 37 and 38 are respectively wound around 36, and the secondary coils 37 and 38 detect the magnetic flux generated from the primary coil 33 and transmitted through the coin C. ing. The primary coil 33 is excited by the sine wave signal from the sine wave oscillator 39.

Because of this structure, the secondary coil 3
The amount of magnetic flux interlinking with 7, 38 greatly fluctuates depending on whether or not the coin C is on the sensor. Usually the primary core 32
Although the magnetic flux from is interlinked, when the coin C comes over the sensor, the magnetic flux is blocked, and thus it becomes difficult to interlink. As described above, the second magnetic sensor 85 is a transmission magnetic flux detection type magnetic sensor, and the thickness and area (diameter) of the coin C as well as the material of the coin C are comprehensively detected, and therefore the identification thereof is made. The ability is excellent and various kinds of separation are possible.

FIG. 6 shows the structure of the diameter detecting sensor 84. That is, in the middle of the transport path 4, a coin C
Is provided with a slit 41 longer than the maximum diameter of the coin C in a direction orthogonal to the transport direction of the coin C, and below the transport path 4 facing the slit 41, for example, a rod-shaped body formed by arranging a large number of light emitting diodes in parallel. Is provided. A CCD line sensor 44 as a photoelectric conversion element is arranged above the conveying path 4 facing the slit 41 via a rod-shaped lens (cell hook lens) 43. With such a configuration, the light from the light source 42 passes through the slit 41, the portion of the coin C is shielded, the light is focused by the lens 43, and the shadow of the coin C is formed on the light receiving surface of the line sensor 44. .

In such a configuration, the line sensor 4
The output of 4 outputs a high-level signal only in the portion where the light is blocked. Therefore, the logical product of the high-level signal of the effective pixel portion and the pulse corresponding to one pixel is taken, and the result is obtained. The diameter of the coin C can be easily detected by counting with a counter as an effective pulse.

It should be noted that the line sensors currently on the market have a resolution of about 14 μm and a high discrimination capability, and can discriminate all coins in Japan with almost no cross. At present, the dependence on this magnetic sensor is greatest, including foreign coins.

FIG. 7 shows an electric circuit of the coin discriminating apparatus 3. First, the system of the first magnetic sensor 82 will be described. The differential outputs from the secondary coils 23 and 24 are amplified by an amplifier (for example, a differential amplifier) 51, and then a direct current component is cut by a capacitor 52, and a full-wave rectification circuit 53 is provided.
Is full-wave rectified by and is smoothed by the low-pass filter 54.
It is input to the channel 0 of the / D converter 55.

Next, the system of the second magnetic sensor 85 will be described. The outputs of the secondary coils 34, 37 and 38 are respectively fed to amplifiers (for example, differential amplifiers) 56, 60 and 6 respectively.
After being amplified by 4, the direct current component is cut by the capacitors 57, 61, 65, full-wave rectified by the full-wave rectifier circuits 58, 62, 66, smoothed by the low-pass filters 59, 63, 67, and output to the arithmetic circuit 68. Is entered. The arithmetic circuit 68 is, for example, Vout = A56 * [A60 * V59-A64 * (V63 + V67)]

The calculation result Vou
t is input to the channel 4 of the A / D converter 55. Here, V59 is the output of the low-pass filter 59, V63 is the output of the low-pass filter 63, and V67 is the low-pass filter 6.
7 output, A56 is the amplification factor of the amplifier 56, A60 is the amplifier 6
An amplification factor of 0 and A64 are amplification factors of the amplifier 64.

The low pass filters 59, 63, 67
Each output of is also directly input to the A / D converter 55. That is, the output of the low-pass filter 59 is on channel 1, the output of the low-pass filter 63 is on channel 2, the output of the low-pass filter 67 is on channel 3,
Each is entered.

The A / D converter 55 is a CPU 70 described later.
The channel switching control is performed by the multiplexer 69 controlled by the low-pass filter 5
The outputs of 4, 59, 63, 67 and the arithmetic circuit 68 are converted into digital signals.

Channel 0 of the A / D converter 55,
The input signal levels of 1, 2, 3 are the amplifiers 51, 56,
Since the amplification factors of 60 and 64 can be adjusted respectively, they are set to predetermined values in advance. Also, A /
The input circuit level of the channel 4 of the D converter 55 is set to "0" in the state where there is no coin on the sensor.
8 outputs are adjusted.

The output of the A / D converter 55 is input to a CPU (Central Processing Unit) 70 as output data of the first and second magnetic sensors 82 and 85. The CPU 70 uses the multiplexer 6 when identifying the coin C.
By alternately switching channels 0 and 4 of the A / D converter 55 via 9, the output of the first magnetic sensor 82,
The output of the second magnetic sensor 85 is alternately read (sampled), and the RAM (random access memory) 71
Sequentially and separately.

The CPU 70 also includes amplifiers 51, 56,
When adjusting the amplification factors of 60 and 64, the multiplexer 6
Channel 9 of the A / D converter 55 via
By sequentially switching 3, the secondary coils 23, 24, 34, 37, 38 of the first and second magnetic sensors 82, 85
Each output of is read sequentially, and the adjustment control of the amplification factor is performed.

The CPU 70 has a ROM (read only memory) 72 for storing the judgment reference value data of the magnetic coin diameter for each coin type in the form of a table, and the coin diameter as described above. A diameter detection counter 73 for counting for detection is connected.

Further, the CPU 70 includes a signal processing section 74.
The output of the line sensor 44 is input via. As a result, the CPU 70 is adapted to perform the above-described optical coin diameter detection processing based on the output of the line sensor 44.

The CPU 70 controls the entire control system such as the discrimination processing of the type and authenticity of coins, the amplification factor adjustment control of the amplifier, and the control processing of various actuators of the coin processing device based on the discrimination result. I am supposed to do it.

Next, the operation of the coin discriminating apparatus 3 having the above-mentioned structure will be described. First, the first magnetic sensor 82
The output processing of will be described. The differential outputs obtained from the secondary coils 23 and 24 of the first magnetic sensor 82 are amplified by the amplifier 51, then the direct current component is cut by the capacitor 52, full-wave rectified by the full-wave rectification circuit 53, and low-passed. After being smoothed by the filter 54 and converted into a digital value by the A / D converter 55, the digital value is input to the CPU 70 and used for detecting the hole and the material of the coin C and the like.

Next, the diameter detecting process by the diameter detecting sensor 84 will be described. As for the output of the line sensor 44 of the diameter detecting sensor 84, a high level signal is output only in the light-shielded portion as described above. Therefore, the CPU 70
Is the logical product of the high level signal of the effective pixel section and the pulse generated corresponding to one pixel, and the result is used as an effective pulse, and the number of effective pulses is counted by the counter 73, By detecting the diameter and making successive comparisons, the maximum value of RA is stored as RA.
Store in M71.

Next, the output processing of the second magnetic sensor 85 will be described. Secondary coil 3 of second magnetic sensor 85
The outputs of 4, 37 and 38 are processed in the same manner as the first magnetic sensor 82 and then input to the arithmetic circuit 68, where the following arithmetic processing described above is performed. Vout = A56 * [A60 * V59-A64 * (V63 + V67)]

This operation output Vout is the A / D converter 55.
After being converted into a digital value by, it is input to the CPU 70. The CPU 70 samples the output of the A / D converter 55 at predetermined intervals and detects the maximum value by successive comparison, and stores the maximum value in the RAM 71 as a storage unit.

In this way, when the maximum value of each sensor is detected and stored in the RAM 71, the CPU 70 causes the judgment reference value data stored in advance in the ROM 72 in the form of a table and each maximum value stored in the RAM 71. It is determined which range each sensor output belongs to by comparing with and, and the type of coin C, authenticity, etc. are identified by the overall determination of the determination results.

Next, the operation of the main part will be described with reference to the flow chart shown in FIG. First, for example, in the case of a depositing process in which a coin is inserted from the outside, the coin detecting sensor 83 located in front of the first magnetic sensor 82 detects the coin C being conveyed, thereby performing the identifying process. Is started. First, the hole and material of the coin C are detected by the output of the first magnetic sensor 82. Next, the diameter of the coin C is detected by the output of the line sensor 44. Finally,
The material, thickness and diameter of the coin C are comprehensively detected by the output of the second magnetic sensor 85. Then, the coin C is comprehensively determined based on these detection results. At the time of this deposit, the coin C is delivered relatively slowly from the delivery unit 2, and is carefully identified.

On the other hand, in the withdrawal process for handling coins once determined to be regular coins, the coin delivery amount of the delivery unit 2 is increased and the identification process ignores the first magnetic sensor 82. For example, the line sensor 44 The output will start when the output exceeds a predetermined value. First, the diameter of the coin C is detected by the output of the line sensor 44. Next, the material, thickness, and diameter of the coin C are comprehensively detected by the output of the second magnetic sensor 85. Then, the coin C is comprehensively determined based on these detection results.

At the time of this withdrawal, since the actual identification time is about 2/3 of the time of the withdrawal, the withdrawal interval of the coin C can be about 2/3 of the withdrawal time, and the withdrawal of the coin C can be performed at high speed. There is no problem even if it is made. As a result, the withdrawal process is sped up, and the processing capability of coins is greatly improved.
From a common sense point of view, it is not necessary to discriminate between coins once identified as legitimate coins and coins inserted from the outside in the same routine, and it can be said that the conventional method has a large loss of processing time.

The above-mentioned adjustment of the coin feeding amount of the feeding unit 2 is performed by
For example, it can be easily achieved by providing a pinch roller driven by a DC motor on the upstream side of the feeding unit 2 and controlling the rotation speed of this DC motor.

[0053]

As described in detail above, according to the present invention, coins inserted from the outside such as deposits are carefully discriminated as in the conventional case, and coins once identified as genuine coins such as withdrawal. With respect to the above, it is possible to provide a coin processing device capable of performing high-speed identification with a minimum necessary sensor, and in particular, greatly improving the withdrawal processing speed.

[Brief description of drawings]

FIG. 1 is a flowchart illustrating an operation of a main part of a coin processing device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram schematically showing a coin processing device.

3A and 3B show an arrangement example of various sensors in a coin identifying device, FIG. 3A is a top view, and FIG.

FIG. 4 is a schematic configuration diagram of a first magnetic sensor.

FIG. 5 is a schematic configuration diagram of a second magnetic sensor.

6A and 6B show a configuration of a diameter detecting sensor, wherein FIG. 6A is a side view showing a partial cross section, and FIG. 6B is a front view showing a partial cross section.

FIG. 7 is a block diagram showing a configuration of an electric circuit of the coin identifying device.

[Explanation of symbols]

C ... Coins, 2 ... Feeding section, 3 ... Coin identification device, 4 ...
... transportation path, 5 ... transportation belt, 6 ... sorting section, 10 ...
Temporary holding section, 11 ... Safes by denomination, 12, 13, 15,
16 ... Transport path, 19 ... Take-out mechanism, 82 ... First magnetic sensor, 84 ... Diameter detecting sensor, 85 ... Second magnetic sensor, 22 ... Primary coil of first magnetic sensor Two
3, 24 ... secondary coil of the first magnetic sensor, 33 ...
Primary coil of the second magnetic sensor, 34, 37, 38 ...
Secondary coil of the second magnetic sensor, 42 ... Light source, 44 ...
... line sensor, 55 ... A / D converter, 68 ... arithmetic circuit, 70 ... CPU, 71 ... RAM, 72 ... RO
M, 73 ... Diameter detection counter.

Claims (1)

[Claims] 1. A coin processing device for depositing and withdrawing coins, wherein a payout means for paying out coins to be deposited or coins to be dispensed one by one, and coins dispensed by the payout means Transporting means for transporting one by one, and a differential transformer type first magnetic sensor arranged along the transporting means for magnetically detecting the transported coins,
A second magnetic sensor of a transmitted magnetic flux detection type, a photoelectric conversion element for optically detecting the diameter of the coin to be conveyed, and a first magnetic sensor, a second magnetic sensor when depositing, A first discriminating means for discriminating the deposited coin conveyed by the conveying means based on each output of the photoelectric conversion element; and a discriminating coin conveyed by the conveying means on the basis of the discrimination result of the first discriminating means. Storage means for distributing and storing, and a payout amount varying means for making the payout amount of the coins of the payout means larger than that at the time of depositing, a takeout means for taking out the coins in the storage means and sending the coins to the payout means. , Second identifying means for identifying the dispensed coins carried by the carrying means on the basis of the outputs of the second magnetic sensor and the photoelectric conversion element, and based on the identification result of the second identifying means Carrying Coin processing apparatus, wherein a dispensing coins are transported by means to and a paying out payout means.