JPS6313234B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an electronic coin sorting device that measures the characteristics of each coin using a plurality of coin sorting sensors to determine its suitability and type.

(B) Conventional technology As shown in Japanese Patent Publication No. 51396/1983 and Japanese Patent Application Laid-open No. 95692/1983, electronic coin sorting devices detect the characteristics of test coins rolling in a coin passage. A sorting sensor measures the coin magnetically or optically, converts the measurement result into a digital signal, and determines the suitability and type of the coin by comparing whether the measurement data is within the tolerance range set in advance in memory. It is something to do. The characteristics to be inspected include material, diameter, plate thickness, etc., and electronic coin sorting devices usually place dedicated coin sorting sensors for each of these characteristics to determine whether the measured data is within the allowable range, and which If the coin is determined to be a specific type of coin, the coin is accepted as a genuine coin. Therefore, in such a coin sorting device, the sorting accuracy changes depending on the tolerance range set in the memory, and if it is set narrowly, even genuine coins will be incorrect.
If set wide, even counterfeit coins will be legal. Therefore, after setting an acceptable range, it is necessary to insert genuine coins and perform an operation test, but if a genuine coin is determined to be inappropriate at this time, it is not known which characteristic test made it inappropriate.

(c) Problems to be solved by the invention As described above, according to the prior art, it was not possible to confirm which tolerance range was incorrectly set.

In view of the above points, the present invention provides a coin sorting device that is capable of displaying the results of comparing measurement data of coins with acceptable ranges.

(d) Means for Solving the Problems In order to solve the above problems, the coin sorting device according to the present invention includes a coin passage through which coins to be inspected roll;
a plurality of coin sorting sensors sequentially disposed in the coin passage along the rolling direction of the coin to be inspected; a memory storing tolerance data for determining the suitability of the coin to be inspected; and a plurality of coin sorting sensors for each of the coin sorters. means for comparing the measured data of the sensor with the permissible range data to determine the suitability and type of the inserted coin; and means for comparing the measured data of each coin sorting sensor with the permissible range data, an arithmetic control unit comprising means for supplying a signal for specifying the generated coin sorting sensor, a signal for specifying the coin type determined by comparison, and a signal for disabling the memory to an address line to the memory; A collation result display device is provided which is connected in parallel to the memory via an address line.

(E) Operation When the test coin rolls on the coin path, each coin sorting sensor sequentially outputs measurement data according to the characteristics of the test coin as it passes. Each time this measurement data is input, the arithmetic control unit compares the data with each tolerance range data set in the memory to determine the appropriateness and type of the inserted coin, and after the comparison operation, the address line displays the measurement data. A signal for specifying the coin sorting sensor that generated the data, a signal for specifying the coin type determined by the comparison, and a signal for disabling the memory are supplied. When these specific signals are inputted via the address line, the matching result display device displays the coin sorting sensor that has performed the measuring operation and its result. At this time, since the memory is controlled to be disabled, the data in the memory is not read out to the arithmetic control section.

(F) Embodiment FIG. 1 shows the configuration of a coin sorting device, and the coin passage 2 communicating with the coin input slot 1 has different materials, plate thicknesses, and
Coin sorting sensors 3, 4, and 5 for measuring the diameter are arranged in sequence, and the coin sorting device 1A is operated according to the judgment result based on each sensor, and coins are introduced into a predetermined passage according to the appropriateness and type. be. In this example, an inductor type coin sorting sensor is used, and as a representative example, a coin sorting sensor 4 for measuring plate thickness is shown in FIG. That is, the coin sorting sensor 4 includes coils 9 and 10 that are connected in series with opposite phases so that the mutual inductance is negative.
1 and 12 windings. The pot cores 11 and 12 are arranged at a distance l on a pair of substrates 13 and 14 forming the coin passage 2, and the coils 9 and 10 are connected in parallel with a capacitor 15 to form a resonant circuit, which oscillates. The circuit 17 normally oscillates at a predetermined standby frequency based on the inductance of the coils 9 and 10. When a coin passes between the pot cores 11 and 12 in this state, the mutual inductance of the coils 9 and 10 changes depending on the distance l ₁ from the pot core 11 to the coin surface and the distance l ₂ from the pot core 12 to the coin surface. That is, the oscillation frequency varies depending on the thickness of the coin, and by detecting this varying frequency, the thickness of the coin can be measured.

FIG. 3 shows the control circuit of the coin sorting device, where the arithmetic control section 7 takes in measurement data and allowable range data from the memory 6, performs operations to determine the suitability and type of coins, and is connected to coin sorting sensors 3, 4, and 5. The oscillation outputs of the oscillation circuits 16, 17, and 18 are selectively output from the multiplexer 19 at a predetermined sampling period based on the signal status of the C ₁ and C ₂ ports of the arithmetic control unit 7. Then, the counter 20 is cleared by a signal from the D1 port of the arithmetic control section 7, and the counter 20 is cleared by the signal from the _D1 port of the arithmetic control section 7, and the counter 20 is cleared by the signal from the D1 port of the arithmetic control section 7.
The oscillation output introduced from 9 is counted and the oscillation frequency is measured as a digital quantity. This measurement is 12
This is bit data, and the arithmetic control unit 7 uses C ₃ and C ₄
Set the port to high or low level and sequentially transfer 4 bits of upper, middle, and lower data to multiplexer 2.
1 through the buffer device 22 A ₁・ A ₂・ A ₃・
A Import using ₄ ports. The memory 6 for setting the tolerance range data is of a type that can be written in a normal state, such as a programmable read only memory (PROM) or a random access memory (RAM). When the arithmetic control unit 7 takes in the allowable range data from the memory 6,
Specify the address with terminals B ₁ to B ₇ and select terminal B _8.
is set to a low level to enable the chip select terminal, and the _C3 and _C4 ports are respectively set to a low level to set the output of the NOR gate 23 to a high level to disable the buffer device 22. At this time, the allowable range data is also 12-bit data, and addressing is performed three times for one data, and the upper, middle, and lower data are taken in by the ₄ ports _A1 , _A2 , _A3 , and A. Further, when the _B8 port is set to a low level, transistors 24 and 25 become conductive, and the power supply V _CC is supplied to the terminal V of the memory 6. This is PROM memory 6
When the permissible range data is not imported in this configuration, the _B8 port is set to a high level to cut off the power and reduce the burden on the power supply section.

As the coins inserted from the input port 1 pass through the coin sorting sensors 3, 4, and 5, measurement outputs are obtained from each sensor.
Extract the maximum count value. The memory 6 includes a coin sorting sensor 3 for each coin type,
Tolerance range data is set for 4 and 5, and when the arithmetic control unit 7 extracts the maximum measured value from each sensor, it takes in the tolerance range data for each coin type regarding this sensor from the memory 6 and compares it. The results of this comparison are output from ports B ₁ to B _8. At this time, a high level signal is output to port B ₈ to disable memory 6, and the comparison target is output from ports B ₅ to B ₇ . It shows the coin sorting sensor that has become , and the B ₁ to B ₃ ports indicate which coin type the maximum measured data is within the permissible range data.

FIG. 4 shows the verification result display device 8 , and the input terminal
B ₁ ′ to B ₈ ′ can be connected to the B ₁ to B ₈ ports of the arithmetic control unit 7. Latch circuit 29, 3
0 and 31 are coin types (10 yen, 50 yen, 100 yen)
, and are connected to the B ₅ ′, B ₆ ′, and B ₇ ′ terminals, respectively. Display parts L ₁ , L ₄ , and L ₇ correspond to the coin sorting sensor 3, display parts L ₂ , L ₅ , and L ₈ correspond to the coin sorting sensor 4, and display parts L ₃ , L ₆ , and L ₉ correspond to the coin sorting sensor 5, respectively. Correspondingly, the displays L ₁ , L ₂ , L ₃ are connected to the latch circuit 29 , the displays L ₄ , L ₅ , L ₆ are connected to the latch circuit 30 , and the displays L ₇ , L ₈ , L ₉ are latched. It is connected to the circuit 31. AND gate 26,
One input terminal of 27 and 28 is B ₅ ′, B ₆ ′, and
are connected to the B ₇ ′ terminal, and the other input terminal is commonly connected to the B ₈ ′ terminal, and the AND gates 26 and 2
The latch circuits 29, 30, and 31 are activated by the outputs of the signals 7 and 28 to light up the display sections _L1 , L2 _{, .} . ., _L9 . Therefore, the verification result display device 8 will not operate unless at least a high level signal is input to the _B8 ' terminal from the _B8 port of the arithmetic control section 7.
is used to switch control between the memory 6 and the verification result display device 8 depending on the signal state of the B ₈ ' port.

When confirming the operation with the above configuration, ports B ₁ to B ₈ of the arithmetic control unit 7 are connected to the comparison result display device 8 and coins are inserted through the input slot 1 . Normally, the calculation control unit 7 repeatedly sets the C ₁ and C ₂ ports to a high level and the C ₁ and C ₂ ports to a low level, and sets the C ₁ and C ₂ ports to a high level. During the sampling period, the oscillation output of the oscillation circuit 16 is output from the multiplexer 19, and after the clear signal is output from the _D1 port, the oscillation output is counted by the counter 20 to measure the oscillation frequency. Then, when the measurement data taken in each sampling period exceeds a predetermined value, the arithmetic control unit 7 detects that a coin has been inserted and is approaching the coin sorting sensor 3, and the coin passes through the coin sorting sensor 3. When the maximum measurement data is extracted, the arithmetic control unit 7 takes in the permissible range data for each coin type (10 yen, 50 yen, 100 yen) related to this sensor 3 from the memory 6 and compares it. The coins inserted at this time
When it is determined that it is a 10 yen coin, the calculation control unit 7
Outputs high level signals to B ₃ , B ₇ , and B ₈ ports,
The latch circuit 29 latches the high level signal of the _B7 port using the output of the AND gate 26, and lights up the display section _L1 . The lighting of the display section _L1 indicates that the inserted coin has been determined to be a 10 yen coin as measured by the coin sorting sensor 3. After that, the calculation control section 7
Repeat the state of setting the C ₁ and C ₂ ports to high level and low level, respectively, and the state of setting each port to low level, and _then
During the sampling period when the C ₂ ports are set to high and low levels, respectively, the oscillation frequency of the oscillation circuit 17 is measured as described above, and when the maximum measurement data is extracted, the tolerance range data for each coin type related to this sensor 4 is retrieved from the memory 6. Compare in detail. If it is a 10 yen coin, the arithmetic control unit 7 outputs a high level signal to the _B3 , _B6 , and _B8 ports, so the latch circuit 30
The output of the AND gate 27 latches the signal of the _B6 port and lights up the display section _L2 . Next, the arithmetic control unit 7 repeats the state of setting the _C1 and _C2 ports to low level and high level, respectively, and the state of setting each of them to low level, and also sets the _C1 and _C2 ports to low level and high level, respectively. During the sampling period, the oscillation frequency of the oscillation circuit 18 is measured, and when the maximum measurement data is extracted, the permissible range data for each coin type related to this sensor 5 is fetched from the memory 6 and compared. and 10
In the case of yen coins, the arithmetic control unit 7 uses a latch circuit 31 to output high-level signals to the _B3 , _B5, and _B8 ports.
latches the signal of the _B5 port with the output of the AND gate 28 and lights up the display section _L3 .

In this way, when a 10 yen coin is inserted to check the operation, and the display sections L ₁ , L ₂ , and L ₃ light up, it is confirmed that the measurements by the coin sorting sensors 3, 4, and 5 are operating normally. . However, if any or some of the display sections L ₁ , L ₂ , and L ₃ do not light up even when a 10 yen coin is inserted, the coin sorting sensor corresponding to the display section that does not light up may be malfunctioning or the tolerance range data may be incorrect. It turns out that the settings are too narrow, and the tester can easily deal with it. Similarly, when performing an operation test using a 50 yen coin, the arithmetic control unit 7 compares the maximum measurement data and allowable range data of each sensor 3, 4, and 5, and sequentially outputs data to ports B ₇ , B ₆ , and B ₅ . Outputs a high level signal and _synchronizes with it.
In order to output a high level signal to the _B8 port as well,
The latch circuit 30 sequentially lights up the display sections _L4 , _L5 , and _L6 by the output of the AND gate 27, but if the above-mentioned malfunction occurs, all or some of the display sections will not light up, resulting in a malfunction. Understand the types of characteristic tests. Then, when we performed an operation test using a 100 yen coin,
After the comparison, the arithmetic control unit 7 sequentially outputs high-level signals to the B ₇ , B ₆ , and B ₅ ports, and in synchronization with this.
In order to output high-level signals to the _B1 and _B8 ports, the latch circuit 31 lights up the display sections _L3 , _L6 , and _L9 by the output of the AND gate 28, but if there is a problem, all or Some of the displays do not light up.

(G) Effects of the Invention According to the present invention described in detail above, the measurement results based on each coin sorting sensor are displayed for each type of coin to be sorted, so that the cause of the sorting abnormality can be easily known. Furthermore, there is no need to provide a special output terminal to use the address line of the memory. Operation can be easily checked by simply connecting a simple display device to the address line.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the configuration of the electronic coin sorting device, Figure 2 is a configuration diagram of the coin sorting sensor, Figure 3 is a control circuit diagram of the coin sorting device, and Figure 4 is a circuit diagram of the matching result display device. It is. 1... Coin slot, 2... Coin passage, 3, 4,
5... Coin sorting sensor, 6... Memory, 7...
Arithmetic control unit, 8 ... Verification result display device, L ₁ /L ₂
~ _L9 ...Display section.

Claims (1)

[Claims] 1. A coin path through which the test coin rolls, a plurality of coin sorting sensors sequentially arranged in the coin path along the rolling direction of the test coin, and storage of tolerance range data for determining the suitability of the test coin. means for comparing the measurement data of each of the coin sorting sensors and the tolerance range data to determine the appropriateness and type of the inserted coin, and the measurement data of each coin sorting sensor and the tolerance range data. Each time a comparison is made, a signal for identifying the coin sorting sensor that generated the measurement data, a signal for identifying the coin type determined by the comparison, and a signal for disabling the memory are supplied to the address line to the memory. A coin sorting device comprising: an arithmetic control section having a means for performing the above operations; and a verification result display device connected in parallel to the memory via the address line.