JPS6065393A - Coin selector - 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 (Field of Industrial Application) The present invention relates to a coin sorting device that electrically determines the authenticity and type of coins.

(Conventional 11+4 configuration and its problems) Coin sorting devices that discriminate electrically usually have a detection coil installed in the coin passage as one oscillator element. As you approach the sensing coil ('), the value of the sensing coil changes, and the oscillation frequency or oscillation level of the oscillator changes accordingly.This change is caused by the outer diameter of the coin, Since it differs depending on the thickness, quality, etc., it is possible to determine the authenticity and type of the coin by comparing this change with the standard value of each coin that has already been memorized. becomes.

By the way, each coin sorting device has a detection coil of 16'.
Since there are differences in the constants of the elements that make up the oscillator, the standard value of each coin that is stored is generally 'i'6 jt for each coin sorting device. If a defect occurs in the coin sorting device, and the defective part is at least one of the four elements that determine the reference value, repairing or replacing only the defective part will not interfere with coin discrimination. The Lr #l'J station, which is starting to generate power, will need to replace the entire equipment, and there will be a problem in terms of service.
child. Father, the coin sorting device of the doubling thread is a coin sorting device that selects specific coins (e.g. 1
It is limited to distinguishing between 0 yen coins, 50 yen coins, and 10 (1 yen coins, 500 yen coins), and cannot easily be used to distinguish other denominations (even specific token coins). could not.

(Objective of the Invention) The present invention has been made in view of the above two points, and provides a coin sorting device that can re-memorize the reference value of each coin by using the coin sorting device alone without requiring any special equipment. It is something to do.

(Structure of the Invention) The present invention is characterized in that the oscillation constant of an oscillator changes due to the passage of a coin, and the change in the oscillation constant or the value converted from the change is determined by each pre-stored discriminator. In a coin sorting device that discriminates whether a coin is J'' (false or type) by comparing it with a reference value of a coin that is a The coin has a means for re-memorizing the standard value of the coin by inserting the coin, and is characterized in that the standard value can be changed freely without the need for a special device.

(Description of an Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 shows the general JD: of the coin sorting device, where 1 is the coin sorting device body, 2 is the coin input 1], 3 is the coin passage, and 4 and 5.6 are iL outer diameter detection. , 4 Aga detection, moon thickness detection coils, 7 is the coin output.

Figure 2 shows the internal configuration of the coin sorting device.
1.12.13 are respectively connected to the outer diameter detection coil 4, the particle detection coil 5, and the moon thickness detection coil 6, and Jt' is an oscillator that oscillates at a constant frequency; 14 is a counter that counts the frequency from the oscillator; The central control unit (hereinafter abbreviated as CPU) is responsible for determining the authenticity and type of 15-digit coins and outputting the determination results, and j6 stores the standard value of each coin. 17 is a changeover switch between a normal coin discrimination mode and a mode for re-memorizing the reference value in the memory, 18 is a switch for selecting the normal coin discrimination mode and a mode for re-memorizing the reference value in the memory; Indicates a denomination setting switch for specifying whether to re-memorize the standard value of the coin.

First, the operation in the full coin determination mode (in FIG. 2, the mode switching switch 17 is on the -1-5V side) will be explained.

When a coin inserted from the input port 2 rolls in the coin passage 3J- and approaches the outer diameter detection coil 4, the oscillation frequency of the oscillator 11 changes due to the change in the innovation dance of the detection coil. The oscillation output a1 of the oscillator 11 is the gate 21
The entire process is manually operated by the counter 14. FIG. 3 shows the gate control signal cl of the gate 21, the oscillation output a1 of the oscillator 11, the counting power b1 of the counter 14, and the counter 1.
4 shows the relationship between the reset signal c4 and the reset signal c4. The oscillation output a1 of the oscillator II is controlled by the counter 1 for a certain period of time T by the gate control number c1 sent from the CPU 5 to the gate 21.
It is given as a count of 4. At this time, the gate control signals c2. c3 is not output, and only gate 21 is in an active state.

The counter 14 counts the number of human inputs and the CPU
15, the count result C is sent. CPU 15k-
After outputting the gate control signal C1 to the JL gate 21 for a certain period of time T, this count result C is read. C
After reading the count result C, the PU] 5 outputs the reset value i divided by c4 to the counter 14, and the counter 14 is reset and returns to the initial state. In this way, sampling of the oscillation frequency is repeated. Actually, the output time T of the gate control signal c1 is set to lm5K, and the oscillator 11
When the oscillation output a1 is 500 kHz, the counter 14 is configured to manually count 500 pulses.

FIG. 4 shows a time change in the frequency of the oscillation output a1 of the oscillator 11 when a coin passes through the outer diameter detection coil 4. By sampling the oscillation frequency f01 when there is no coin and the maximum frequency f1max when the coin passes through the outer diameter detection coil 4 as described above, the maximum amount of change in frequency representing the outer diameter of the inserted coin can be determined. Δf1max can be calculated. Similarly, when the inserted coin passes through the particle detection coil 5, the maximum change Δf2 in the frequency of the oscillation output a2 of the oscillator 12, which represents the particle particle of the inserted coin.
maX is divided by: X i+ru. The gate control signal CI+" of gate 2], 23 is output to lP+T which determines the frequency of the oscillation output of oscillator 2.
First, only the gate 22 becomes active. Similarly, when the inserted coin passes through the moon thickness detection coil 6, the maximum change in the frequency of the oscillation output a3 of the oscillator 13, which does not represent the moon thickness of the inserted coin; 1iΔf,max is calculated by Ru. Note that when measuring the frequency of the oscillation output of the oscillator 13, the gates 21 and 22 of the gates 10, cl, and c2 are not output, and only the gate 2A becomes active.

Δf1max・Δf2 of the coins inserted in this way
By comparing the values of max and Δf3max with the reference value of each coin stored in the memory 16, it is possible to determine whether the inserted coin is a fake or a type. Assuming that the standard value of each coin (10 yen, 50 yen, 100 yen, 500 yen) is stored in the memory 16 as shown in Fig. 5, in order for the inserted coin to be determined to be a 10 yen coin, is fl (10 yen) - α1o≦Δf, max > f, (10
circle)→-α10'"""Outer diameter discrimination f2 (10 yen)-β
,. ≦Δf2max #f2 (10 yen) - β, o' -
--・AZ quality discrimination f3 (10 yen) - γ1o≦Δf3ma
It is sufficient to satisfy the following three conditions: x≦f, (10 yen) + rho'-.-4g thickness discrimination.

Here α101α1o′, β10′β1o′, γ101
γ10' is a constant determined in consideration of variations in 10 yen coins, changes in ambient temperature over time, changes in components over time, etc., and is a previously known value. If the coin is not determined to be a 10 yen coin, it is sequentially compared with a 50 yen coin, a 100 yen coin, and a 500 yen coin, and if there is no corresponding coin, the coin is determined to be a counterfeit coin. A coin discrimination signal is output according to the determination result.

Next, the operation when the reference value of each coin is in the re-memory mode (in FIG. 2, the mode selector switch 17 is on the OV side) will be described. 6th
The figure shows the processing procedure in the re-memory mode of the reference value of each coin.Each time a coin is inserted, a counter that counts the number of insertions is used, and when this counter reaches a certain value B or more, The average value of the maximum frequency change amount of the coins inserted so far is re-stored as a reference value for each set of 5i and 1 small. Hereinafter, the procedure will be explained in detail.

Immediately, in step 5o, a counter for counting the number of inputs is cleared to 0. Next, in step 51, it is checked whether the mode is for re-storing the reference value of each coin, and if it is not the 1.1-1 storage mode, then the above-mentioned normal coin discrimination mode (step 8o) is entered. This mode check is carried out by the control signal c5 which is activated by the mode changeover switch]7, and the 11i level (+5■ side) is the normal coin discrimination mode, and the LO level (OV side) is the standard value reconsideration mode for each coin. It is set to memory mode. In step 52, it is determined whether or not a coin has been inserted, and if no coin has been inserted, step 51
Return to , and repeat steps 51 and 52 when coins are inserted. The oscillator is used to determine the presence or absence of coin insertion in step 52.
The increasing numerator of the oscillation frequency of the oscillation output a1 of 1, '-f. 1
As shown in Figure 4, when the value becomes less than a certain value A,
It is determined that the coin has been inserted, and the process moves to the next step 53. In step 53, the value of A is determined. In the same manner as described in the normal coin discrimination mode, the maximum frequency C conversion amount Δf, max, Δf2 m a X of the input coin is determined.
+Δf, max is fl.

β2. , β3. (i = 0.1...B-1
) is temporarily held in CP015. Step 5
At 4, the counter is incremented by +1. Step 5
If the counter Q value exceeds a certain value B in step 5, the process moves to the next step 56C, otherwise, the process returns to step 51 again, and continues until the counter value reaches a certain value B, steps 51, 52, 53. 54 is repeated. Ste.

In step 56, f, i, β21.
Average value f of β3° (i=o, 1..., B-1), , β2. A calculation is performed to calculate β3.

β2-self. β21/B β3-9Σ β317B −0 A certain value B is f, , β2 found in step 56
．． .

The average value fl+f2+f3 of β3, (i-0, 1,..., n-4) is f, , f2. , f,
, (i = 0, I, -, B-1) is set to a value V that can sufficiently absorb the fluctuation. in fact,
The value 13 is set to 8. Here, the prison average values f, , f2. f3 or iJ memory of the set denomination coin is based on the base if/- value. Step 57, 58゜5
g. In fiO, do you want to re-memorize the standard value of the coin? L4'll l+1+ is determined by the output c (i, c7) of the denomination setting switch 18 shown in Fig. 2.Actually, the denomination is set by V as shown in Fig. 7.Denomination setting switch According to the outputs c6 and c7 of step 18, υ, steps 57, 58, 59, and 60 respectively, proceed to steps 61, ti2, 63, and 64, and calculate the −r average value f, determined in step 56. , f2.F3 is the reference value of the set denomination, and the memory 1 in Fig. 2 is
6 to 11” is stored. Step 61. 62. G3
．． When the reference value is re-stored by step 64, the process returns to step 50Vc. By changing the gold Hf+ setting in this way and inserting coins again, it becomes possible to re-memorize the base a and value of any coin.

In this example, the oscillation frequency of the oscillator changes as the coin passes, and this change in oscillation frequency is used to identify the coin, but data obtained by converting the change in oscillation level using A/D conversion etc. This also includes a case where the coin is determined by comparing the value with a reference value in memory. The memory that stores the standard value of each coin can be any type of memory that can be read and written.
, CI) U, for example, RAM in a microcomputer, and -C may also be used.

Also, there is no need for the denomination setting switch when in the basic value re-memory mode; for example, each time a coin is inserted a certain number of times, the standard value is re-memorized and at the same time the denomination setting switch is set to the next denomination. It is also possible to make it move. In addition, anything that can be easily devised from this embodiment should be considered as an example of application of the present invention.

(Effects of the Invention) As described in detail in Section 2, according to the present invention, at t'1, in addition to the normal coin discrimination mode, a re-memory mode for the reference value of each coin used for coin discrimination is provided. By making it possible to re-memorize the reference value of each coin, in the event of a defect, it is possible to repair or replace the minimum number of parts, thereby improving serviceability. In addition, since the coin for which the reference value is to be stored can be arbitrarily selected (other denominations, such as 5 yen coins), it is also possible to easily store 7. We can supply coin sorting equipment with:

4 Description of ffi'I in the drawings Fig. 1 is a schematic diagram of the t+J coin sorting device, Fig. 2 is a schematic diagram of the coin sorting device (1X11 of 6), and Fig. 3 is a time chart showing the sampling state of the oscillation frequency of the oscillator. , Fig. 4 shows the change in the oscillation wave number when a coin passes through the detection coil, Fig. 5 shows the data arrangement in the memory, and Fig. 6 shows the procedure for re-memorizing the reference value of each coin. Showing Flow Guya
1., FIG. 7 is an example of a diagram showing the allocation of the 11th gold medal.

4, 5.6... Detection coil, II, 12
．． 13 ... oscillator, 14 - ... ° counter, j
5 ・・・・・・・・・Central 1lil control unit (CPU)
, ]6...--Memory, 17...- Seven-dead changeover switch, 18...-Denomination setting switch.

Applicant for permission: Matsushita Electric Industrial Co., Ltd. ・　“　1・ Agent Kouji Hoshino Figure 1 ↓ Figure 2 Figure 4 Figure 5

Claims (1)

[Claims] The oscillation constant of the oscillator changes as the coin passes, and the change in the oscillation constant or the change is converted/
By comparing this value with the pre-stored reference value of each coin to be discriminated, a coin sorting device that discriminates the authenticity and type of coin can re-enter the normal coin discrimination mode and the reference value of each coin. By switching between the memorizing mode and inserting a coin, you can change the base of the coin! (2) A coin sorting device characterized by having a means for re-memorizing the value.