JPH046998B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a coin identification device with a temperature correction function 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 in reliable contact with the regulating surface, so the output from the material sensor is stable. There are no particular problems. However, coin processing machines such as coin counting machines and coin wrapping machines have come to process coins at high speed, and until recently, coins had not been sorted using material sensors. This is because such coin processing machines are often used in financial institutions such as banks, and it was thought that counterfeit coins would not normally be brought into financial institutions.

However, due to the recent popularity of TV games, some of the coins brought in from game centers etc. are counterfeit coins (for example, coins that have the same diameter as genuine coins but have a different thickness and material; for example, 50 yen coins wrapped with solder and soldered to 100 yen coins). Coin processing machines are also being equipped with material sensors to detect counterfeit coins. However, after the issuance of the 500 yen coin, this
It has been revealed that there are foreign coins (such as South Korea's 500 won coin) that are extremely similar to the 500 yen coin.
This foreign coin (500 won) is exactly the same in diameter and material as the 500 yen coin, only the thickness is slightly different.
It is made only 0.2mm thick. If this difference in thickness, that is, the difference in the distance between the sensor and the coin surface, is always maintained correctly, it would be possible to distinguish between the two by increasing the sensitivity of the conventional material sensor, but the coin processing as described above The throughput per unit time of the machine is approx.
The coins move at a very high speed of over 1,500 coins/minute, and the coins move at high speed through the coin passage. They often dance upward, and 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. Further, no countermeasures have been taken against the fact that the sensitivity of the material sensor changes depending on the temperature.

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

(Summary of the Invention) The present invention includes a denomination selection means for selecting the denomination of coins to be processed, a coin supply means for feeding coins onto a coin passage, and a counting means for counting coins flowing on the coin passage. This invention relates to a coin identification device with a temperature correction function in a coin processing machine, which includes a material sensor for detecting the material of the coin flowing on the coin passage, a temperature detection means for detecting the temperature of the material sensor, and a coin identification device having a temperature correction function. Flowing coin break detection means for detecting a break in the flowing coins on the passage; temperature storage means for storing the detected value of the temperature detection means when the flowing coin break detection means detects a break; a reference value selection means for storing reference values corresponding to the material and selectively outputting a reference value corresponding to the material of the denomination coin selected by the denomination selection means, and an output or material of the reference value selection means; Comparison means is provided to correct one of the sensor outputs based on the temperature stored in the temperature storage means and then compare it with the other, so that contaminated counterfeit coins can always be reliably detected even if a temperature change occurs. It is.

(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. The coins C are sequentially arranged around the periphery by centrifugal force, and the arranged coins C are sent out to the coin passage 2 outside the rotary disk 1. This coin passage 2 is for sorting and transferring the coins C sent out from the rotary disk 1 according to their outer diameter, and is composed of a fixed member 3 and a movable member 4 arranged in parallel. Shoulder portions 3A and 4A are formed over the entire length of the fixed member 3 and the movable member 4 on opposing sides, respectively, and the coin C is attached to these shoulder portions 3A and 4A.
It is designed to move on A 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 is constantly applied with force in the enlargement direction, that is, to the right in the figure, by springs 5, 5. is recieving.
Furthermore, the movable member 4 is provided with a contact part 6 made of a roller, and the circumferential surface of a cam 7 for setting the passage width is in contact with this contact part 6, and the cam 7 is compatible with the largest diameter coin. The cam surfaces 72, .
Each of these cam surfaces 71 to 76 is formed into a circular arc surface centered on the axis of the cam shaft 8. A setting dial 10 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 adapted 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. By rotating the pulleys 12 and 13 in the direction of the arrow shown in the figure (described later) and driving the belt 14 in the same direction, the coin C on the coin passage 2 is conveyed toward 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 16 consisting of a photoelectric switch or a proximity switch is provided on the near side, and the coin C is located at the position of the counting sensor 16. The number of coins is counted based on the signal obtained when the coins pass through.
Further, a coin passage blocking device (not shown) is provided between the material sensor 20 and the counting sensor 16, and when activated, a blocking rod connected to a solenoid (described later) projects into the coin passage 2 and prevents coins from passing through. It is designed to prevent the transportation of C. The blocking rod operates 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. 2A and 2B. The material sensor 20 has a U-shape, and a coin C passes through a recess 23 formed between both protrusions 21 and 22. An excitation coil WE excited by an excitation signal is wound around the protrusion 21, and a secondary coil WA that is electromagnetically induced is also wound around the protrusion 21. A similar secondary coil WB is wound around the secondary coil WA and WB, and the secondary coils WA and WB have the same number of turns but the winding directions are opposite to each other, and their common connection point is
The output VD between the output terminal T2 of the secondary winding WA and the output terminal T1 of the secondary winding WB with respect to TC is outputted differentially. If the thickness of the coin C is t, and the distance between the protrusions 21 and 22 is d, then the coin C will always be conveyed in contact with the upper surface of the protrusion 21, as shown in FIG. 2A. For example, the output VD always has a predetermined output signal level depending on the material of the coin C. However, in the above-mentioned coin processing machine, since the coins C are conveyed at high speed, the protrusions 21 as shown in FIG.
It will be transported in a dancing state at a distance x from the top surface of. With respect to the dancing distance x when the coin C is transported, the terminal TC and the terminal T1,
As a result of experimentally determining the output between T2 and T2, a characteristic curve as shown in FIG. 3 was obtained. That is, the output VA of the secondary winding WA has a signal level as shown by the △ mark in FIG. 3, and the output WB of the secondary winding WB has a curve like the cross mark in the same figure. As a result,
Differential output VD between secondary windings WA and WB (=VA−
VB) is a curve like the circle in Figure 3. As is clear from this experimental result, the signal level of the differential output VD is in the range of approximately 0.5 mm to 2.5 mm when the moving distance x is approximately 0.5 mm to 2.5 mm.
In AR, the rate of change is about 1%, and coin C
It can be seen that it is sufficient to keep the moving distance x during transportation within this range AR. Therefore, in the present invention, as shown in FIG. 4, a regulating member 31 made of ceramic or Bakelite with a thickness x1 is layered on the upper surface of the protrusion 21, and a similar regulating member 31 with a thickness x2 is provided on the lower surface of the protrusion 22. 32 is layered, and the distance x that the coin C moves from the upper surface of the protrusion 21, that is, the secondary winding WA, is approximately 0.5 mm to 2.5 mm.
The range should be up to. Therefore, in this example, the thickness x1 of the regulating member 32 is approximately 0.5 mm,
The thickness x2 of the regulating member 32 is calculated by subtracting the thickness t of the coin C from the distance d between the protrusions 21 and 22, and from that value.
The value obtained by subtracting 2.5 mm, that is, x2 = d - t - 2.5, and if the regulating members 31 and 32 are set in this way, the range in which the coin C can move is always within the range of 0.5 mm to 2.5 mm from the top surface of the protrusion 21. becomes. In this way, by regulating the interval at which the coin C passes through the differential material sensor 20 using the regulating members 31 and 32 and by reducing the level of change in the differential output VD, the material of the coin C can be determined stably and accurately. It becomes possible to detect.

Figure 5 shows a comparison of the levels of the differential output VD for various coins. The level of dynamic output VD is decreasing, and the difference between a 500 yen coin and a Korean 500 won is becoming extremely small, but even if coin C moves x, the change in signal level is small, so it is certain that It becomes possible to identify the material.

Therefore, the differential output VD as shown in FIG.
By converting each of the level ranges into digital values and storing them in a memory, it is possible to identify the denomination of the coin by comparing it with the differential signal VD responsive to the material of the coin.

In the material sensor described above, the material sensor 20
When the environmental temperature T changes, the coil impedance changes, the current flowing through the secondary coils WA and WB changes, and the differential output WD also changes. Therefore, it is necessary to calculate the temperature based on the value of the output VA (or VB) of one of the secondary coils when the coin C is not in the recess 23, and correct the differential output VD to a constant temperature.

Here, the differential output of the secondary coils WA and WB
VD can be approximately expressed as a linear function with a certain rate of change ΔD due to temperature change, and the output VA (or VB; hereinafter simply referred to as VM) of the secondary coil WA (or WB) can also be expressed in the same way. Yes, (Fig. 6), for example, let the rate of change of the secondary coil WA be ΔA. and,
If the operating output at the reference temperature To is VDo and the output of the secondary coil WA is VAo, then VD=VDo{1+ΔD(T-To)}...(1) VA-VAo{1+ΔD(T-To)}...(2) From equations (1) and (2) above, (T-
To) is calculated as T-To=1/ΔA(VA/VAo-1)...(3), and by substituting equation (3) into equation (1), VD=VDo{1+ΔD/ΔA(VA/VAo −1)} …(4). The differential output VDo at the reference temperature To is determined from equation (4) as follows: VDo=VD/{1+ΔD/ΔA(VA/VAo−1)} (5).

The differential output VDo expressed by this equation (5) is the differential output of the secondary coils WA and WB at temperature T.
This is the value obtained by converting VD to the value at the reference temperature To. Therefore, the differential output at the reference temperature To
In addition to finding VDo and the output VAo of the secondary coil WA, find the rate of change ΔD of the differential output VD with respect to temperature and the rate of change ΔA of the secondary coil WA (or WB) with respect to temperature. By determining the output VM, the reference temperature is always
The differential output can be calculated using the value converted to To. Thereby, the material of the coin can be detected reliably, and the denomination of the coin can be correctly identified. Note that it is also possible to prepare a table of reference levels for each temperature in advance, measure the temperature T, read out the reference level from the table, and compare it with the detected value VD at that time to detect the material.

In any of the above cases, the point at which the temperature T is measured is a problem. In other words, when the coin C is under the sensor 20, the output VM of the secondary coil WA (or WB) is
The output depends on the material of the coin C and the temperature T at that time, and it is impossible to detect only the temperature. It seems 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 counterfeit coin detection is reliable. The present invention solves this problem, and an embodiment of the present invention will be described below in detail for a case where the reference level is provided as a table. Tables are set up at 1°C pitch, for example.

FIG. 7 shows the control system of this invention,
The entire control is done by CPU1 such as a microcomputer.
00, and this CPU 100 is connected to ROM 120, RAM 121,
An alarm device 123 is connected, as well as the denomination selection and start/stop keys 110 described above. Further, the output of the counting sensor 16 is input to the CPU 100 via the waveform shaping circuit 111.
The CPU 100 controls a solenoid 113 for driving a blocking rod via a solenoid drive circuit 112, and controls a motor 11 for a drive mechanism via a motor drive circuit 114.
5. Further, the differential output VD of the material sensor 20 is amplified by an amplifier 101, rectified by a half-wave rectifier circuit 102, smoothed by a low-pass filter 103, and the signal
VDA is input to the AD converter 105, and a signal VDB further amplified by the amplifier 104 is input to the AD exchanger 105. Amplifier 101 is the first
As shown in FIG. 1A, the signal is amplified to such an extent that the one yen coin detection signal, which reaches its maximum level at the center of the coin, is not saturated, and the amplifier 104 amplifies the low level signal. Yen coins, 100 yen coins, and 50 yen coins are made easier to identify based on their level differences. The AD exchanger 105 further includes a material sensor 20.
The output VM of passes through the amplifier 106 to the half-wave rectifier circuit 1.
07, smoothed by a low-pass filter 108, and input to the AD converter 105.
The exchange channel is switched by a channel switching signal CHC from the CPU 100, and AD-converted digital data is input to the CPU 100. Note that the standard differential output VD ₁ of each denomination coin with respect to the temperature T as shown in FIG. 9 and the temperature data with respect to the output VM shown in FIG. 6 are determined and stored in advance in the ROM 120. There is.

In such a configuration, its operation will be explained with reference to the flowcharts of FIGS. 8 and 10.

First, with reference to FIG. 8, a description will be given of how the temperature at that time is detected when the power of the coin processing machine is first turned on.

When the power is turned on, an initial reset is performed (steps S1 and S2), and then the motor 115 is reversed for a predetermined period of time (for example, 2 seconds), the rotary disk 1 and the conveyance device 11 are reversed, and the coin C is placed on the path 2. Even if there is a problem, return it to rotary disk 1 (step S3),
After making sure that there are no coins near the material sensor 20, the sensor outputs VD and VM are changed in AD by the AD converter 105 alternately and a predetermined number of times at predetermined time intervals and are stored in the RAM 121 (step S4). In this case, as shown in Figure 11, the output VD of the 500 yen, 100 yen, and 50 yen coins is lower than the other denominations, and the levels are close to each other, so one of these three denominations is the denomination. When selected by the selection means, the differential output VD is amplified one more stage by the amplifier 104.
Channel connected to AD converter 105
The CPU 100 selects and stores it in the RAM 121.
Next, this memorized value is the value when the coin C is not under the sensor 20 (a predetermined temperature range, in this example -10℃~
69℃ value, see Figure 9).
(Step S5) If NO, it is determined that the coin is under the material sensor 20, and "1" is added to the count memory m for abnormality determination in the ROM 121 (Step S13). Then, the value of counting memory m is “2”
However, since it is still "1" at present, the process returns to step S3, the motor 115 is once again rotated in reverse for a predetermined period of time, and the above operation is repeated. Even with this, if the differential output VD is 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 to notify the operator of the abnormality (step
S15). If the differential output VD is within a predetermined range, it is determined that the coin is not under the sensor 20, and VMa is calculated by averaging the output VM values read in step S4 (step S6). Since the output VM has a ripple component, the average value VMa is calculated.

Next, the average value stored in ROM120
The current temperature T from VMa and the temperature table is the 6th
Obtain as shown in the figure (step S7). Whether this temperature T is within a predetermined range, for example -10℃≦T
Determine whether ≦69℃ is satisfied (step
S8), if it is outside the range, "1" is added to the memory n for abnormality determination in the ROM 121 (step S16), and it is determined whether the value is "2" (step S17). is currently “1”, so step
Return to S3 and reverse the motor 115 again. Since the output VM changes more greatly than the differential output VD due to the influence of the coin, the fact that the temperature T is out of range means that there is a high possibility that a 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 123 is activated to notify the abnormality (step S18). If the temperature T is within the range in step S8, this counted temperature T is stored in the RAM 121 (step S9). Next, the differential output VD and temperature T shown in FIG. 9 stored in the ROM 120 are
The reference value VDo for all denominations corresponding to the temperature T is read out from the table and stored in the RAM 121 (step S10). Now, the currently set denomination is known from the position of the setting dial 10, and the reference value VD ₁ of this denomination is individually stored in the RAM 121 (step S11), and then for each denomination previously stored in the ROM 120. Read out the △ of the relevant denomination from the allowable value △ of
VD ₁ +△ and VD ₁ -△ are stored in the ROM 120 and the temperature detection memory operation is temporarily terminated (step
S12).

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

When the power is turned on, the setting dial 10 is set to 100, for example.
If you turn the setting dial 10 and set it to the 500 yen position in order to process a 500 yen coin, the standard value of 500 yen corresponding to the already memorized temperature T will be set. is individually stored in the RAM 121 as the reference value for the corresponding denomination, and the tolerance value △ of 500 yen is newly read out from the ROM 120.
It is stored in RAM121. Then, when a 500 yen coin is put into the rotary disk 1 and the start button 110 is pressed (step S20), the motor 115 rotates in the normal direction, the rotary disk 1 and the conveyor 11 rotate in the normal direction, and the coin is sent onto the surface ( Step S21), the CPU 100 alternately AD converts the differential output VD and output VM,
Read into RAM 121 (step S22). RAM1
21 predetermined area contains the differential output read just before.
The value of VD is stored, but since this is the first time it is being read, the previous value is "0".
Since it is larger than the value "0" just read (slightly larger than 0 even when the coin is not under the material sensor 20), the value has changed between the previous differential output VD and the current one, so it is stored in the RAM 121. Clear the contents of the memory for steady state judgment (step
S23, S50). It is determined whether or not the value of VD has increased compared to the previous time (step S51). In this case, since it has increased, the current value of VD is set as the maximum value, and the counter s in the RAM 121 is set to " 1”
(steps S60, S61). and,
It is determined whether or not this maximum value is less than a predetermined value (step S62), and if it is less than the predetermined value, the process returns to step S22 again, the VD and VM are read, and the VD
Compare with the previous value of . Here, it takes one to several seconds for the first coin to reach the material sensor 20, and the sampling time is fast, so of course the coin has not yet reached the sensor position in this reading, and the current VD Since the value is equal to the previous VD value, "1" is added to the memory for steady state judgment (step S24), and the value is set to a predetermined value, for example "64".
It is determined whether or not it has become the same (step S25). Since = 1 now, return to step S22 and try again.
Load VD and VM alternately and repeat the same operation.

When the value of VD does not change for a predetermined period of time and the value in the memory for steady state determination reaches "64" (for example, when the value of VD does not change for 50 milliseconds), the memory is cleared (step S26). Then, it is determined whether the value of VD is within a predetermined range (step S27). In addition,
64 VM values are stored, but only two VD values are stored: this time and the previous time. Since there is no coin under the sensor now, the final VD value is within the predetermined range (step S27), and 64
The current temperature T is determined again from the average value VMa obtained by averaging the values of VM and the temperature table (steps S28, S29), and the temperature T is within a predetermined range (for example, -10℃≦T≦69℃). ), then compare the value stored in the temperature memory (in this case, the value stored when the power was turned on) with the current value, and check whether the difference is within a predetermined value (for example, within 8 degrees Celsius). makes a judgment (steps S30, 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 currently detected temperature T is stored in the RAM 121 (step S32). After clearing the contents of memories a, b, and c for abnormality determination (step
S33), read the reference value VD ₁ for all denominations from the VD and temperature table in the ROM 120 and store it in the RAM 121, and further store the VD of the denomination individually from the position of the setting dial 10, and set the standard value for the denomination. Read the allowable value △ of the value VD ₁ from the RAM 121 and set it as VD ₁ + △.
VD ₁ −Δ is stored in the RAM 121.

When the first coin approaches the material sensor 20 by the conveyance device 11, it is constantly being read.
The value of VD gradually increases. The maximum value 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 S53). It is determined whether this value is within the range of VD ₁ ±Δ of the set denomination (step S54), and if it is within the range, the memory s is set to "2" as a genuine coin (step S55,
S56), if it is outside the range, 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 S63). In addition, 500
When one of the yen, 100 yen, 50 yen coins is selected, the amplification is higher than the other denominations, so in this case, in the unlikely event that other denominations such as 1 yen, 10 yen, 5 yen, etc. When the voltage passes through, the differential output VD exceeds the maximum input value of the AD converter 105, but the protection circuit clamps it to the maximum value (for example, 5V), and when the value of VD reaches this value, it is determined that the coin is counterfeit. When the currency is counterfeit, the solenoid 113 is activated and the motor 115 is activated.
The system stops the coins, and then activates the alarm device 123 to notify the operator that counterfeit coins are mixed in. However, if the coins are genuine coins, processing continues. The coins are counted when the coins pass through the counting sensor 16.

If the read-behind coins are conveyed with almost no interval, the temperature detection operation is not performed because the value of VD increases again, but normally during one coin processing operation, the temperature detection operation is always carried out several times. When an interruption in the flow of coins occurs for about 50 milliseconds or more, the contents of the memory for steady state judgment will reach "64" as mentioned above, so the temperature will be detected, and if the temperature is changing, it will be the reference value. Since VD ₁ is updated and the authenticity of the coin is determined based on this new reference value VD ₁ after the update, counterfeit coins can be reliably detected even if the temperature changes during processing operations.

Note that even if a coin gets stuck on the passage 2, the memory content for steady state determination will be "64", but if the coin is under the material sensor 20, the value of VD will be outside the predetermined range. , "1" is added to the contents of the abnormality determination memory a, and as a result, the contents of the memory a become "1", so 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 the normal routine is resumed. Return to (steps S40 to S42). Differential output again
If VD is out of range, the content of the abnormality determination memory a becomes "2", so the motor 115 is stopped as if the blockage has not been cleared, and the alarm device 123 is activated to notify the operator. Also, depending on the positional relationship between the jammed coin and the sensor 20 and/or the material of the jammed coin, the differential output VD may be within a predetermined range, but since the value of VMa is different from normal, the temperature T It is outside the specified 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. If the blockage is not cleared even after normal rotation, the content of any one of the abnormality determination memories a, b, and c becomes "2", and the motor 115 is stopped and the alarm device is activated (step S45).

Note that in the above example, after temperature detection, the reference value is read from the table, that is, the reference surface is corrected based on the temperature, and the corrected reference value and sensor output value are compared. The output may be compared with a reference value after being corrected. Also,
It is also possible to calculate the correction value each time without providing a table in the ROM.

(Effects of the Invention) As described above, the coin identification device of the present invention constantly checks the coin flow state, detects a slight interruption in the coin flow, stores temperature data at that time, and uses the temperature data based on the value. Since the criterion for determining authenticity is corrected, temperature changes during coin processing can be fully coped with, making it possible to more reliably identify the authenticity of coins.

[Brief explanation of drawings]

Figure 1 is a block diagram showing an example of a coin processing machine to which the present invention can be applied, Figures 2A and B are diagrams for explaining the operation of the material sensor, and Figure 3 is for explaining the state of detection by the material sensor. Figure 4 is a diagram showing an example of the structure of a material sensor, Figure 5 is a diagram showing a comparison of the signals obtained by the material sensor for each denomination, and Figure 6 is a diagram showing the output of the material sensor and temperature. Diagram showing the relationship between
The figure is a block configuration diagram showing the control system of this invention, FIGS. 8 and 10 are flowcharts showing examples of the operation of this invention, and FIGS. 9 and 11 A and B are for explaining the operation of this invention. This is a diagram. DESCRIPTION OF SYMBOLS 1...Rotary disk, 2...Coin passage, 3...Fixed member, 4...Movable member, 5...Spring, 7...Cam,
11... Conveyance device, 20... Material sensor, C...
Coin, 100...CPU, 120...ROM, 12
1...RAM.

Claims (1)

[Claims] 1. A coin processing machine having a denomination selection means for selecting the denomination of coins to be processed, a coin supply means for feeding coins onto a coin passage, and a counting means for calculating the number of coins flowing on the coin passage. , a material sensor for detecting the material of the coins flowing on the coin passage, a temperature detection means for detecting the temperature of the material sensor, a flowing coin interruption detection means for detecting an interruption in the flow of the flowing coins; Temperature storage means for storing the detected value of the temperature detection means when the flowing coin breakage detection means detects a flow breakage;
a reference value selection means for storing reference values corresponding to materials of a plurality of denomination coins, respectively, and selectively outputting a reference value corresponding to a material of a denomination coin selected by the denomination selection means; Comparison means for correcting either the output of the value selection means or the output of the material sensor based on the temperature stored in the temperature storage means and then comparing it with the other, so that it is always possible to eliminate contamination and falseness even if a temperature change occurs. A coin identification device with a temperature correction function for a coin processing machine, which is characterized by being able to reliably detect coins.