JPS5820281A - 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 The present invention relates to a coin sorting device, and particularly aims to improve the sorting performance in a coin sorting device that sorts multiple types of coins.

Conventional coin sorting devices for sorting multiple types of coins include a device that mechanically sorts coins according to their size, shape, etc.; There is.

However, since such a coin sorting device has a mechanical structure, the process is complicated, and its sorting accuracy and machine life are limited.

The dramatic feature of the present invention is to overcome the above-mentioned drawbacks of Ik*t and to provide an electronic coin sorting device having an advanced sorting function.

That is, one coin ii* has a bridge enclosure incorporating a selection device for sorting the plurality of types of coins in a coin sorting device for sorting m several types of coins.
*What is the voltage ratio of the output voltage E and phase obtained from the bridge 111I when the coin is inserted? @1! and the phase comparator IIm, the voltage comparator circuit and the phase comparator i
When the output voltage and phase are within the predetermined reference voltage range I!l and the predetermined reference phase range, am''e outputs the voltage and phase discrimination correction only at tK, and the voltage comparator circuit and the The coin is characterized in that it is determined that the coin is a predetermined genuine coin when the voltage and phase discrimination signals are obtained from both of the phase comparator circuits.

The present invention will be described in detail below based on the drawings. Figure 1 shows an outline of the configuration of the coin sorting device of the present invention, where l is a coil sensor for coin sorting provided in the coin return path. be. This coil sensor 1/ has a discriminating part J[niil/A, and the coin inserted from the coin slot J rolls on the folded coin path and passes through the uneven part of the CM Illumina l. The genuineness of the coin ginseng is determined based on the change in impedance that sometimes occurs, and the species is also selected.

I is a counterfeit currency passageway that guides only selected counterfeit coins.

I is the positive ★ passage that leads the specie. The coin trays guided to this genuine coin return path 1 are simultaneously sorted into K11llll by a sorting signal from the coil seytt, and each coin is guided to a predetermined position.

Figure J shows the change in impedance generated by the coil cent/AK for sorting the coins III! , three different types of coins (10 yen in this example, j0
yen and 100 yen), and shows the impedance at the position of each point with respect to the zero point oyc.In other words, the relationship shown in the figure is established between the resistance blade and the inductance meeting in impedance. One point!
indicates the impedance at the general standby letter 111 where the coin san or sen 1/ is not located. Now, when the # yen coin begins to pass through the opposite part of the senna l, the impedance is a point! It changes from the position to the point position, and! When the encounter is finished, the robot returns to point P again. The path of such change in impedance is shown by a dashed line.

*In the case of a CJF yen coin, the impedance changes from the position of point P to the position of point B and then returns to the position of point P. The change path is shown by a broken line.]

In the case of a 100 yen coin, the balance changes from the position of point P to the position of point C, and returns to the position of point P (change path 1? 夷-). An example of a signal detection circuit that detects a change in impedance appearing on such a selection coil and selects the type IIItl of a coin is shown.
1 t Rt s Together with R1 and inductance L1, it constitutes a bridge 1III. This bridge circuit 7
A sinusoidal wave oscillation SOSA having an angular frequency of . is connected to supply an alternating output of a predetermined voltage and frequency to the bridge circuit 7.

In addition, each element of the bridge circuit II7 can be adjusted appropriately to indicate the impedance selected in advance. Five! As the saying goes, balance (zero voltage) must be obtained between C, t, and terminal!! and ?mKI.
This is a differential amplifier that is connected in series to detect the balanced state. From the differential amplification AT, waveforms of output voltage and phase are obtained that correspond to the coin seed INK transmitted through the opposing portion of the coil sensor I.

/σ yen coin, the output voltage obtained from the differential amplifier IIt and its phase are shown in Figures (Mu) and (11), respectively.
) K, where Ma0m, Vυm and φ
0m and φυm indicate the upper and lower limits of the output voltage and phase, respectively, when a balanced state is obtained in the bridge EIIγ.

In this way, the output voltage and phase obtained from the differential amplifier l (the phase difference with respect to the phase of the output of the oscillation generator OSO) are calculated for each coin (10 yen, n yen, and 100 yen) [shown is IIjlII, Here, the radial direction indicates the voltage and is shown in the direction centered on the 1st phase line Q (position of OV). ．．．

and P are the output voltage and its phase I! when various coins pass through the opposing parts of Senna l and in the standby state KtJe! , i.e., 5K as shown in Figure 1.

In the case of a 10 yen coin, the output voltage indicated by one point M is the upper limit M0m, the lower 1iIvWA, and the upper limit φ of its phase.
It is in the diagonal range fi bounded by 0m and the lower limit φUm.

Similarly, in the case of a 'cJIP yen coin, a range BK output voltage limited by Mao1, Vυto, and φo1 and 61 can be obtained. Also, if it is 1oo1qH coin, * voc and Vt
An output voltage is obtained in range 11 limited by FC, φOC, and φEFC.

Returning to FIG. 3 again, we will continue to explain the device that detects the range of the output voltage and its phase difference to sort coins. In Figure 3, de, 10 and // means that coin j is 10
For example, 10 is a voltage comparison circuit that detects the respective output voltages in the case of Yen, I Yen, and 100 Yen.
In the voltage comparison circuit D that detects the output voltage in the case of a yen coin, I! Generates the output signal @l'' only when the output voltage from the work increaser Iat is between Ma0m and Maυm, and supplies this l!4# to A/Dog-)/2. .

Similarly, the voltage comparison B Hto and // are ! ! Generates an output signal @11 only when the output voltage from the dynamic amplifier t is between mao1 and mawm and from voc to vvsa, respectively, and outputs these signals by AND
/J and l-, respectively.

/j is a square wave converter, which converts the sine wave output obtained from the differential amplifier t into a square wave output. Also.

14. and II are designed to detect whether the phase of the square wave output for the inserted coin JK is within the above-mentioned phase ranges corresponding to the cases of 10 yen anP1 and 100 yen, respectively. 1 which is a phase comparator circuit
For example, if the phase of the square wave output from the square wave converter/J is φ
If it is between 0m and φUm, phase comparison 11 jl /4
The output signal @/1 from is supplied to the AND gate 12,
If the output phase is between φon and φW110, the output signal ``''/'' is supplied from the phase comparison E18n to the AND gate/nc, and if the output phase is between φOC and φtic, the output signal is output from the phase comparison 1[1lIi/I. The signal 1/'' is supplied to the AND gate l#. AND GOO)/J is supplied to the judgment circuit s19 only when the output signal @11 from both the voltage comparator IIf and the phase comparator circuit 14 is obtained. @／
In the 1 determination 111IIn, only when the output of 11 occurs lH, it is determined that it is a genuine coin of n yen. Similarly, /J is a comparison circuit /J is a judgment circuit n K only when the output signal 1/m from both θ and /7 is obtained.
The AND gate l- outputs the judgment circuit /lK@/'' only when the output signal 11'' from both the comparison circuits /l and /l is obtained. ka(shi 1
In the judgment circuit n, is the @/” output from the AND gate/J?
Only a fight occurred! If the @1m output from the AND gate l- is generated only once, it is determined to be a genuine coin of 9 yen.

Reference It (0) to (1) show the process from the output signal obtained in this way to the decision circuit/9 drawing a decision, together with each signal waveform. When the output voltage and phase obtained from the differential amplifier t are shown in Figures (M) and (II), respectively,
Corresponding to the waveform shown in ec, Fig. 3(0) shows the differential amplifier t
This shows the signal output from the voltage comparator circuit supplied with the output voltage of ml (mu) from .

Here, the output voltage is 7σ yen specie all! When the voltage is between Tom and Vυ, there are three output signals '"l" shown in Figure CD.
) shows the output signal from the phase comparison circuit 171/4 which receives the phase output shown in Figure (II) K.

Here, the phase is igi**s phase of 70 yen specie φ
There is no /IiL when it is at the intersection of 0m to φUm, and therefore one output signal @l'' is shown.
The AND output @l'' as shown in Figure Reference (1) is generated from ANDGOO)/2 to which the output signals shown in Figure Reference (0) and Figure Reference CD) are supplied, and this AND output 1 /″
is supplied to the judgment circuit II /9 K, and CI is supplied to the judgment circuit n.
It is determined to be OF3 specie.

Regarding j17 yen coins and 1110 yen coins.

It follows the 70 yen coin and Asama Judgment Haruka II.

Explanations using waveform diagrams such as those shown in 4'E (mu) to (1) will be omitted here.

As explained above, according to the present invention, a coin sorting device which sorts a plurality of types of i['Rt-.

Avoid coins with the selection filter built into the lottery circuit! 1lIL#, and the output voltage 8E and phase obtained from the bridge circuit when a coin is inserted are supplied to the comparator circuit, and when the type coin is within the range of its reference voltage fE and reference phase □, the comparator circuit When both the reference voltage discrimination signal and the reference phase discrimination signal are obtained, it is determined that the coin is genuine, so one selection jl buoy can be used as a bridge. By simply incorporating it into the circuit, multiple types of coins can be sorted with high precision.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the outline of the configuration of the coin sorting device of the present invention;
FIG. 2 is an explanatory diagram IQ showing the change in impedance when coins pass in the case of sorting = A/, and FIG. 3 is a circuit I1.
Votes reference (mu), (phantom, (o), (n) and (1)
] is a waveform diagram showing the 9 phases of the output voltage from the 70 differential amplifier, the output signal from the voltage comparison circuit 1, the output signal from the phase comparison circuit, and the judgment signal from the Andogoo F, and jlQ is the warpage difference. FIG. 3 is an explanatory diagram showing the relationship between reference voltage and reference phase obtained from a dynamic amplifier for one type of coin. l...Puillsenna, lMu sorting coil. -One coin passage, J-・Coin slot. - Coin, ! - False counterfeit money route 4 - Genuine money route 7 - Purikuji circuit. l-differential amplification t1. /I, //-Voltage comparison circuit. /J, /j, i-tei-and gate, /1-・square wave converter. /4. /7. /l-・Phase comparator, /9-judgment circuit. Figure 4 Figure 5

Claims (1)

[Claims] In a coin sorting device that sorts multiple types of coins, #J
It has a bridge a path incorporating a sorting coil for sorting out multiple types of coins, and the output voltage FE# and phase obtained when the coin is inserted from the bridge circuit are connected to an electric 8E comparison circuit and a phase comparison circuit, respectively. The voltage comparator circuit II and the phase comparator circuit output voltage and phase 1a shoulder signals only when the output voltage 8: and the phase are within a predetermined reference voltage range W and a predetermined reference phase range. And the voltage i and the phase discrimination haiku were obtained from both the voltage comparison path 1 and the phase comparison W path!
? A coin sorting device characterized in that the coin is determined to be a predetermined genuine coin.