JPS6149292A - Coin identifier for coin processor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a coin identification device in a coin processing machine such as a coin counting machine or a coin wrapping machine.

(Technical background of the invention and its problems) Various types of material sensors have been considered and put into practical use to detect the material of an object, such as a coin. The material of the coin is detected, but the speed of the coin passing through the coin sorting section is relatively slow, and the coin is moved while firmly contacting the regulating surface, so the output from the material sensor is stable. There is no particular problem, but the coin total is 1! ! Coin processing machines, such as machines and coin wrapping machines, are designed to process coins with a trough, and the coins are not sorted using a υ or τ senna. na l1
3I! This is because currency processing machines are often used in financial institutions such as banks, and it was believed that counterfeit currency would not normally be brought into financial institutions.

However, due to the popularity of calibrated Hrv games, some of the coins brought in from game centers etc. are counterfeit coins (for example, coins with the same diameter as genuine coins, but with a thickness and material of Coin processing machines are also being equipped with material sensors to detect counterfeit coins. However, after the 500 yen coin was issued, it became clear that there was a foreign coin that was extremely similar to this 500 yen coin (for example, the Korean N1 500 won coin).This foreign coin (500 won) had a diameter and material of 500 yen. It is exactly the same as a yen coin, only the thickness is about 0.21 times thicker.If this difference in thickness, that is, the difference in the distance between the sensor and the coin surface, is always maintained correctly. For example, if the sensitivity of the material sensor described in item 7 is increased, it becomes possible to distinguish between the two, but the processing ψ per unit time of the above-mentioned coin processing machine is extremely fast, at about 1500 coins per minute or more. Yes, because the coin II moves at high speed in the coin passage, even if the conveyor belt presses the coin 1.7 from above onto the passage surface and conveys it, the coin often dances slightly upward from the passage surface. Therefore, no matter how much the sensitivity of the material sensor is increased, the output is often the same, making it impossible to reliably distinguish genuine coins from counterfeit coins.Also, the sensitivity of the material sensor changes depending on humidity. No measures were taken against this.

Furthermore, since conventional coin identification devices amplify all coins at the same magnification for identification, the output levels may be close to each other depending on the denomination, which has the disadvantage that zI identification is likely to occur.

(Object of the invention) This invention was made under the above circumstances,
It is an object of the present invention to provide a coin identification device that does not cause false detection by using a material sensor that is optimal for a coin processing machine that processes coins in large quantities and at high speed.

(Ji41 Summary of the Invention) The present invention relates to a coin identification device in a coin processing machine, which has a denomination selection means for selecting the denomination of a coin to be processed, and a coin supply means for feeding the coin onto a coin passage. A storage means that stores in advance a reference value that is a criterion for determining authenticity according to the denomination, a material sensor that detects the material of the coin flowing on the hard frh road, and an output of the material sensor that amplifies the output of the material sensor. a first amplifier; a second amplifier that amplifies the output of the material sensor at a higher magnification than the first amplifier; and a second amplifier that amplifies the output of the material sensor at a higher magnification than the first amplifier; and a discriminating means for selecting the denomination according to the denomination and comparing it with the base BA&i of the denomination in the storage means to determine whether the floating coin is genuine or false.

(Embodiment of the Invention) FIG. 1 is a mechanical diagram showing an example of a coin processing machine equipped with a material sensor 20 of the present invention, in which a rotating fitting for coin feeding is shown.
is designed to sequentially arrange a large number of coins C ejected inside by centrifugal force around the periphery as it rotates.
The arranged coins C are delivered to a coin passage 2 outside the rotary disk 1. This coin passage 2 is for sorting and transferring the coins C sent out from the rotation if, and is composed of a fixed member 3 and a movable member 4 arranged in parallel. Shoulder portions 3^ and 4A are formed over the entire length of the fixed member 3 and the movable member 4 on opposing sides thereof, respectively.

The coin C moves on these ri sections 3A and 4A. Therefore, coins having a smaller diameter than the opposing distance between the shoulders 3A and 4A will fall from above the coin passage 2. In addition, the movable member 4 is configured to be movable in a direction perpendicular to its length direction so as to change the distance between it and the fixed member 3, and a spring 5.5 constantly applies force in the expanding direction, that is, to the right in the figure. is recieving. Further, the movable member 4 is provided with a contact portion 6 consisting of a roller, and the peripheral surface of a cam 7 for setting the passage width is in direct contact with this contact portion 6.
The cam surface 7 sets the passage width to accommodate large diameter coins.
A cam surface 72 that sets the passage width corresponding to coins from 1 to 1 yen smaller. ...7ε, and each of these force 15 surfaces 71 to 76 is formed into a circular arc surface centered on the axis of the camshaft 8. A setting dial IO on which a setting denomination 9 is displayed is attached to the camshaft 8. Further, a rotary switch (not shown) is provided at the bottom of the camshaft 8, and is configured to send out a signal of the set denomination. This forms denomination selection means.

On the other hand, the conveyance device 11 is composed of pulleys 12 and 13 arranged at both ends in the length direction of the coin passage 2, and a belt 14 mounted on these pulleys 12 and 13, and includes a drive mechanism such as a motor. (described below) by Boo 912.13
By rotating the coin in the direction of the arrow in the figure and driving the coin 14 in the same direction, 17 cc of hard coins on the coin passage 2 are conveyed to the front side in the figure. A material sensor 20, which will be described later, is provided in the middle of the conveyance path 2, and a counting sensor IG consisting of a photoelectric switch or a proximity switch is disposed on the front side, and the coin C is inserted into the counting sensor 1.
The number of coins is counted based on the signal obtained when the coin passes through position 6. Also, a material sensor 20 and a counting sensor! A coin passage prevention device (not shown) is provided between the
is provided, and when 9 is activated, a blocking rod connected to the lenoid (described later) protrudes into the coin passage 2 and transports the coin C. It is designed to prevent it. The blocking rod is activated when the number of coins to be counted reaches the set value if the number of coins to be counted is separately set in advance, or when a counterfeit coin is detected by the material sensor 20 by a method described later.

Next, the material sensor 20 will be explained with reference to FIGS. 2(A) and 2(B).
A coin C is conveyed through the protrusion 21, and an excitation coil E which is excited by an excitation signal is wound around the protrusion 21, and a secondary coil A which is electromagnetically induced is wound around the protrusion 21. A similar secondary coil W8 is wound around the protrusion 22, and the secondary coils WA and W have the same number of windings and are similar to each other! ! The output terminal T2 of the secondary winding WA and the output terminal T! of the secondary winding W8 are connected to the iY+ connection point TC three times. The output vO between the two is outputted differentially. The thickness of the coin C was t, and the distance between the protrusions 21 and 22 was d and 1°. 4, if the coin C is always conveyed in contact with the top surface of the protrusion 21 as shown in Figure FS2 (A), the output vO will be a predetermined output to the foil according to the material of the coin C. signal level. However, the coin fiFl as mentioned above! Since the coin C is conveyed at high speed in the machine, as shown in Fig. 2 (
As shown in B), the object is conveyed in a dancing manner, extending the distance from the upper surface of the protrusion 21. Like this/I-
For the distance # of the dance during transportation of hard 1'tC, satin TC,! As a result of experimentally determining the output between terminals TI and T2, a characteristic curve as shown in FIG. 3 was obtained. In other words, secondary! ! ! The output VA of the line WA becomes a signal level as shown by the Δ mark in Fig. 3, and the output WB of the secondary winding
is a curve like the x mark in the same figure. As a result, 2
Differential output vo (-vA-V
B) is a curve like the 0 mark in Figure 3. As is clear from this experimental result, the signal level of the differential output VD is the moving distance gl! In the range AR of approximately 0.5 mm to 2°51, the rate of change is approximately 1χ, and it is clear that the weight of the coin C during its transportation should be kept within this range AH. Ru. Therefore, in the present invention, as shown in FIG. 4, a regulating member 31 made of ceramic or Bakelite with a thickness of 11 is layered on the upper surface of the protrusion 21, and a similar regulating member 31 with a thickness of 2 is provided on the lower surface of the protrusion 22. The member 32 is layered, and the distance R1 that the coin C moves from the upper surface of the protrusion 21, that is, the secondary winding WA! The range is approximately 0.5111 to 2.5 mm. Therefore, in this example, the thickness xl of the regulating member 31 is Q, approximately 5 mm, and the thickness I2 of the regulating member 32 is obtained by subtracting the thickness t of the coin C from the distance d between the protrusions 21 and 22. .5I!m tV
& The value obtained, that is, x2=d- becomes -2,5, and B
If the control members 31 and 32 are used as one coin in this way, the coin C
The range that can be moved is always 0.51 from the top surface of protrusion 2]
The range is from 1111 to 2.5+am. In this way, by regulating the interval at which the coin C passes through the differential material sensor 20 with the regulating members 31 and 32 and by reducing the level of change in the differential output 1/D, the material of the coin C can be stabilized and Semen
This makes it possible to detect images with good accuracy.

FIG. 5 shows a comparison of the differential output VDΩ level for various coins, including a 1 yen coin, a 10 yen coin, a 5 yen coin, a 500 yen coin, and a 100 yen coin.

The level of the differential output vO decreases in the order of the 50 yen coin, and the difference between the 500 yen coin and the Korean 500 won is extremely small, but the distance traveled by 1 coin C! Even if this occurs, the change in signal level is small, so it is possible to reliably identify the material.

Therefore, the level range of the differential output VD as shown in FIG. 5 is converted into a digital value and stored in the memory tα.
By doing so, the denomination of the coin can be identified by comparing it with the differential signal VD responsive to the material of the coin.

In the material sensor described above, when the temperature T of the material sensor 20 changes, the coil impedance changes, and 2
The current flowing through the next coils WA and WB changes, and the differential output, WD, also changes.
It is necessary to calculate the temperature by (1^) of one output VA (or VB) of the secondary coil when the temperature is not at 1, and correct the differential output VD to a constant temperature.

Here, the differential output V[l of 2 & coil WA and 8 is
It can be approximately expressed by a linear function with a certain rate of change JD due to temperature change, and the secondary coil WA (or wB)
+7') Output VA (or vB: hereinafter simply referred to as V)
The same is true (FIG. 6), and for example, let JA be the rate of change of the secondary coil WA. If the operating output at the reference temperature T0 is VDo and the output of the secondary coil -A is VA, then VD-VDoil or jn(T-To)1...
...(1) VA=VAoil kaiaA (T-To
) 1......(2) From the above equations (1) and (2), (T
-To ) is calculated as 1 Substituting this equation (3) into equation (1), we get From this equation (4), the differential output vl at the reference temperature T0
] If we find o.

・・・・・・・・・(5) becomes.

The differential output VD expressed by this equation (5) is obtained by converting the differential output VD of the secondary coils A and B at the temperature T to a value at the reference temperature T0. therefore,
Differential output VDo and secondary coil at reference temperature T,
In addition to finding the output VA of A, the rate of change dΩ of the differential output VD with respect to temperature and the rate of change of the secondary coil WA (or WB) with respect to temperature llA are determined, and the output VM of the secondary coil at temperature T is obtained. By calculating, the differential output can always be calculated using a value converted to the reference temperature T. Thereby, the material of the coin can be detected reliably, and the denomination of the coin can be correctly identified.

Note that a table with reference levels for each temperature may be prepared in advance, and the material may be detected by measuring the temperature T, reading the reference level from the table, and comparing it with the detected value VO at that time.

” In either case, the measurement point of temperature T becomes a problem. That is, when the coin C is under the sensor 2o, the output V of the secondary coil WA (or WB) will be an output according to the material of the coin C and the temperature T at that time, and it is impossible to detect only the temperature. It's impossible. It may seem that it is sufficient to detect the temperature before coin processing begins, but if a large number of coins are processed, the temperature will change even during coin processing, so it is difficult to say that this invention can detect counterfeit coins reliably. This is a solution to this problem, and an embodiment of this second method will be described below in detail for the case where the reference level is provided as a table. For example, the table is 10C pi, chi, and it sinks.

FIG. 7 shows the control system of the present invention, and the entire control is performed by a CPU 100 such as a microcomputer, and this CPt 1100 is connected to R via a pass line 122.
OM120. RA old 21. Alarm device 123 is connected'
At the same time, the denomination selection JR and start/stop keys 110 described above are connected. Also.

The output of the harmonic sensor 16 passes through the waveform shaping circuit I11 to the CP
The input is input to the old OO, and the CPU 100 controls the solenoid 113 for the blocking forest drive via the solenoid drive circuit +12, and controls the motor 1 for the drive 42 via the motor drive circuit 114.
It is designed to control 15. Furthermore, the differential output VD of the material sensor 20 is amplified by an amplifier 101, rectified by a half-wave rectifier circuit 102, and then filtered by a low-pass filter 1.
03, and the signal VDA is input to the An converter 105.

A signal VDB further amplified by amplifier +04 is input to AO converter 105. The amplifier 101 is shown in FIG.
), the signal is amplified to the extent that the 1 yen coin detection signal, which has the maximum level at each coin center, is not saturated, and the amplifier ÷ 104 amplifies the low level signal, and the 11th factor (8) shows Gotoku 500 yen coin, 100 yen coin and 50 yen coin discount!
This makes it easy to identify them based on their level differences. AO converter 105
In addition, the output VM of the material sensor 20 is amplified: l: +l
After passing through the OB, it is inputted to the half 1l12 rectifier circuit 107, smoothed by the low-pass filter 108, and then inputted to the AO
The An conversion channel of the converter +05 is switched by a channel switching signal CHC from the CPU 100, and the AO converted digital data is input to the CPU 100.

Note that the standard differential output vDI of each denomination coin with respect to the temperature T as shown in FIG. 9 and the temperature data with respect to the output VMK shown in FIG. 6 are previously determined and stored in the RO 120. ing.

In such a configuration, its operation is shown in FIGS. 8 and 10.
This will be explained with reference to the flowchart shown in the figure.

First, the manner in which the temperature at that time is detected when the power of the coin processing machine is turned on for the first time will be explained with reference to FIG.

When the power is turned on, an initial reset is performed (step Sl
, S2), and then for a predetermined period of time (for example, 2 seconds), the motor 1
15 is reversed, and the rotation 1 and the conveying device 11 are reversed so that even if the coin C is on the passage 2, it is returned to the rotation 1t (step S3), so that there is no coin near the material sensor 20. After that, the sensor output VD and V are alternately changed.
And the AO is changed by the An converter 105 a predetermined number of times every predetermined time and is stored in RA 121 (step S4). In this case, as shown in FIG. Since the levels are lower and closer to each other than the other denominations, when one of these three denominations is selected by the denomination selection means, the differential output VD is amplified one more step by the amplifier 104. The CPU 100 selects the channel connected to the An converter 105 and stores it in the RAM 121.Next, this stored value is the value when the coin C is not under the sensor 20 (a predetermined temperature range, in this example -10°C
.about.asOc (see FIG. 9) in step S5).

If NO, it is determined that the coin is under the material sensor 20, and "l"° is added to the count memory m for abnormality F-1 in the RAM 121 (step 5I3), and the value of the count memory m is “2°° is determined (step 514), but currently it is still 1′°, so slave S3
Return to , reverse the motor 115 again for a predetermined time, and repeat the above operation. If the differential output VD is still outside the predetermined value range, it is determined that the coin is jammed or the sensor is abnormal, and the alarm device 123 is activated. It is activated to notify the operator of the abnormality (step 5I5), and if the differential output VTI is within the predetermined range, it is assumed that the coin is not under the sensor 20: l'1ltlrL, and in step S4, the read output 17M is VMa is calculated by averaging f/iVMa (step S6). Since the output VW includes a ripple component, the average f/iVMa is calculated.

Next, the average value stored in RO (20) is
and the current temperature T from the temperature table as shown in Fig. 6 (step S7). Check whether this temperature T is within a predetermined range, for example -10'C≦↑≦63°ct.
Determine whether to add m or not (step S8), and if it is outside the range, write “
°1′ (step 518), and its (jQ is 2°°
It is determined whether or not (step St,), n
The value of is currently °°1''', so step S'3..: Return and rotate the motor 115 again.Since the output VM changes greatly depending on the color back of the coin compared to the differential output VD, the temperature The fact that T is outside i lff1 means that there is a high possibility that the coin exists near the material sensor 20. Therefore, if the output VD is again within the predetermined value range and the temperature T is outside the range, It is determined that the coin is jammed or the sensor is abnormal, and the alarm device a123 is activated to notify the abnormality (step 5l13).If the temperature T is within the range in step S8, this measured temperature T is stored in RA 121. (Step 59) 6 Next, from the table of differential output VD and temperature T shown in FIG. 9 stored in the ROM 120, the reference value vDo of all denominations corresponding to the temperature T is read out and stored in the RAM +21. (Step 5IO), and now the currently set denomination is found from the position of the setting dial IO, and the standard for this denomination (fjVD+ all 4VI
Separate RAn121 memory L (staple 5ll), furthermore, the allowable value Δ for each denomination stored in the ROM120 in advance
Read the Δ of the denomination from VO, ◆Δ and VD, -Δ
is stored in the ROM 120, and the temperature detection storage operation is temporarily ended (step 512).

Next, the case where coins of a certain denomination are put into the rotary disk l and counted will be explained with reference to the flowchart of :1S101ffl.

When the power is turned on, the setting dial 10 is at the 100 yen position, for example, and if you turn the setting dial 10 to the 500 yen digit j6 to process a 500 yen coin, the temperature that has already been stored will be reset. The base 21g value of 500 yen corresponding to T is newly set as the standard 1rI of the corresponding denomination in RAM.
+21 is stored for each iN, and the allowable value Δ of 500 yen is newly read out from the ROM 120 and stored in the RAM +21. Then rotate the 500 yen coin 1i 1-,
When you press the start button 1!0 (step 520
), the motor 115 rotates forward and rotates at $1, the Wa feeding device 11
rotates forward and sends 1i3Hχ onto the path (step 521), and the CPU 100 outputs the differential output VD and the output V
Convert M alternately to AD (RAM1211.: Read (
Step 522), a predetermined area of the RAM 121 contains 1
The value of the differential output VD read into the riQ is stored, but since this is the first time it has been read, the previous value is °0°', which is larger than the value "0" just read. (Even when the coin is not under the material sensor 20, it is slightly larger than O), so the value is different between the previous differential output vO and this time.

Memory for steady state judgment within 98 and 121! The contents of the VD are cleared (Step S23, 550), and it is determined whether the value of VD has increased compared to the previous time (Step 551).
, is increasing in this case, so the current value of vrJ is set as the maximum value, and the count counter S in RAM+21 is set to 1''.
(step sso, 5s1), and then it is determined whether this maximum value is less than a predetermined value (step 582), and if it is less than the predetermined value, the process is again performed in step S2.
Return to step 2, read vI] and VM, and compare with the previous value of VD. Here.

It takes one to several seconds for the first coin to reach the material sensor 20, and the sampling time is fast.
In this read, the coin has not yet reached the senna position, and the current VD value is equal to the previous vO value, so it is a memory for steady state judgment! add l” to (step 524),
It is determined whether the value has reached a predetermined value, for example, '64'' (step 525). Since the current value is I!-i, the process returns to step s22 and VO and V are read alternately again.

The same operation is repeated below.

When the value of vn does not change for a predetermined period of time and the value of memory for steady state determination becomes '64'' (for example, when the value of VD does not change for 50 milliseconds), clear the memory! (step 52G). Next, it is determined whether or not the value of VD is within a predetermined range (step 527).Although 64 values of VM are stored, only two values of VD, the current and previous values, are stored.
It has been tied. Since there is no coin under the sensor now, the final vO value is within the predetermined range (step 527), and from the average value VMa obtained by averaging the 84 VM values and the temperature table. The current temperature T is again i
r4 cut sail (step S2B, 529), its temperature T
is within a specified range (for example -10℃≦T≦83℃), then 1
Next, the value recorded in the temperature memory (in this case, the value stored when the power was turned on) is compared with the current value, and it is determined whether the difference is within a predetermined value (for example, within 8 degrees Celsius). (Steps 93G, S3) In order to improve the reliability of the temperature information, the temperature is set at 8° C. in this example, and if it is within this temperature difference, the current detected fA degree T is recorded in the RA old 21 (step 532), and , After clearing the contents of memories a, b, and c for abnormality determination (step 533), R011
112077) VD temperature CF) 2 of all denominations from the table! Read out the i quasi value VD, store it in RA old 21, and then dial the settings! The VD of the denomination is stored individually starting from the 0 position, and the tolerance value Δ of the standard value VO of the denomination is set to RA old 2.
1, and VO, +Δ and vo, -Δ are tlAM1
21.

When the first coin approaches the material sensor 20 by the conveyance device 11, 'M! The value of 1/D that is being read out gradually increases. The maximum f〆1 is updated each time, and when the center of the coin passes through the center of the sensor, the value of VD gradually decreases, but the maximum value of VD is determined when the value of VD starts decreasing (step 553),
It is determined whether this value is within the range of vDI±Δ of the set denomination (step 554), and if it is within the range, the memory S is set to 2'' as a genuine coin (step S55).
゜95G), If it is Q supination, it is determined that it is a counterfeit currency, and the solenoid 113 is activated, the motor 115 is stopped, and an alarm is output (step Sθ3). Furthermore, 500 yen, 1
When one of the 00 yen and 50 yen coins is selected, the degree of amplification is higher than other denominations, so 2 In this case,
When 1 yen, 10 yen, 5 yen, etc. of other denominations pass, the differential output VD exceeds the maximum input value of the ^D transformer +05, but it is clamped to the maximum value by the protection circuit (for example, 5 V).
, When the value of VD reaches this value, it is determined that the coin is counterfeit.If the coin is counterfeit, the solenoid 113 is activated.
The motor 115 is stopped and the alarm device 123 is activated to notify the operator that counterfeit coins have been mixed in, but if the coins are genuine, the process continues. The coins are counted when the coins pass through the counting sensor 16.

If subsequent coins are conveyed with almost no interval, the temperature detection operation is not performed because the value of VD increases again, but during the normal coin processing operation, the temperature detection operation is always performed several times. Since a break in coin flow occurs for about 50 milliseconds or more,
At that time, as mentioned above, the memory for steady state judgment! Since the content of reaches °84'', the temperature is detected, and if the temperature is changing, (half value vD1 is updated, and after updating, J'[ha of the coin is determined based on this new reference value VD, Therefore, counterfeit coins can be reliably detected even if the temperature changes during the processing operation.

In addition, even if a coin gets stuck on aisle 2, there is a memory for steady state determination! The content of is '84', but if the coin exists under the material sensor 20, the value of vO will be outside the predetermined range, so we add '1pa' to the content of the abnormality determination memory a, and Since the content of memory a becomes 'l'', the motor 115 is rotated in the reverse direction for a predetermined period of time (for example, 2 seconds), then rotated in the forward direction, and returns to the normal routine (steps S40 to 542).The differential output VD is out of range again. If so, the content of the abnormality determination memory a becomes "2", so the motor 115 is stopped assuming that the blockage has not been cleared, and the alarm device 123 is activated to notify the operator. Depending on the place and relationship with 20 and/or the material of the jammed coin, the differential output V[l may be within the predetermined range, but since A1 of VMa is different from normal, the temperature T will be outside the predetermined range. .Alternatively, even if the temperature is within the range, the difference between the value stored in the temperature memory and the current value is outside the predetermined range, and the motor 115 is rotated in reverse, and the blockage is not cleared even if the motor 115 is rotated in the forward direction. Sometimes, memory a for normal judgment
, b, or c becomes 2″, and the motor 115
P? il: Activate the alarm device (step 545).

In the above example, after detecting the temperature, (read quasi f〆1 from the table, set the base surface to temperature 1■) 8 (then correct 2 + ii, correct 9 & 1 & half value and sensor ltj force (f
Although the ratio of i to "1" is used, conversely, after extracting the sensor output based on the temperature], (it is also possible to compare it with half value)
, 16 In addition, the table may not be provided in the ROM, and the correction value may be calculated each time.Furthermore, in the above, the differential output VD amplifier +0 of the material sensor 2o
1, and after rectification and filter processing, the width amplifier 10
However, as shown in FIG. 12, the QJ amplifier 10! Amplifier 131 with a higher amplification factor than
The output vO is amplified as shown in FIG. 11(B) using
Further, the number of puff width devices is not limited to two, but may be three or more and the amplification 1 may be changed.

(Effects of the Invention) As described above, according to the coin identification device of the present invention, since the output of the material sensor is changed according to the denomination to be processed, it is possible to more easily identify the authenticity of coins. It can be done reliably.

[Brief explanation of drawings]

Figure 1 is a configuration diagram showing an example of a coin processing machine to which this invention 11 can be applied, Figures 2 (^) and (B) are diagrams for explaining the operation of the material sensor, and Figure 3 is the detection of the material sensor. Figure 4 is a diagram showing an example of the structure of the material sensor, Figure 5 is a diagram showing a comparison of signals obtained by the material sensor for each denomination, and Figure 6 is a diagram showing the structure of the material sensor. FIG. 7 is a block diagram showing the control system of the present invention; FIGS. 8 and 10A are flow charts showing operation examples of the present invention; FIG. 9 and FIG. (A),
(B) is a diagram for explaining the invention in detail, and FIG. 12 is a configuration diagram showing another embodiment of the invention. l...rotation, 2...coin passage, 3...fixed member, 4...movable member, 5 spring, 7...cam, 11...
・Transport center, 20...Material sensor, C...Coin, 1
00...(:PU. 120...ROM, 121...RAM. Applicant's agent Yuzo Yasugata 12th Figure 2 (A) WE Condolences 2 Figure (B) 3rd area Figure 6 i-z) Fight for 5 yen

Claims (2)

[Claims] (1) In a coin processing machine having a denomination selection means for selecting the denomination of coins to be processed and a coin supply means for sending coins onto a coin passage, a storage means for storing information in advance according to the coin type; a material sensor for detecting the material of the coin flowing on the coin passage; a first amplifier for amplifying the output of the material sensor; and a first amplifier for amplifying the output of the material sensor. a second amplifier that amplifies at a higher magnification than the first amplifier; and outputs of the first and second amplifiers are selected in accordance with the denomination selected by the denomination selection means; 1. A coin identification device for a coin processing machine, comprising: a determining means for identifying whether a floating coin is genuine or false by comparing it with a standard value of the denomination. (2) A coin identification device in a coin processing machine according to claim 1, wherein the second amplifier amplifies the output of the first amplifier.