JPS6380387A - Coin selector - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic coin sorting radical for sorting a plurality of coins using a coin sorting sensor such as an i 173 coil.

(Prior Art) In an electronic coin sorting radical that sorts coins using a conventional coin sorting sensor, when a coin inserted from a coin slot passes through the coin sorting sensor, a coin is emitted from the coin sorting sensor. The detection signal is compared with a value previously stored in a computer memory, and when the peak value of the detection signal is between the maximum and minimum allowable values of the stored values, it is determined that the coin is genuine.

[Problem that the invention seeks to solve]

However, with this type of method, the detection sensitivity of the sorting sensor changes due to aging during use in cloth, or as a countermeasure against cases where certain counterfeit coins are accepted. When it is desired to change the range value, it is necessary to take the trouble to change the contents stored in the memory within the combinator, which is extremely inconvenient in terms of maintenance.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic coin sorting device that eliminates the above-mentioned disadvantages and allows the coin acceptance width value to be easily changed by changing simple parts.

[Means for solving problems]

In order to achieve the above object, the present invention provides an inspection method that stores and retains the average value of inspection reference values for genuine coins in a coin sorting installation that sorts coins of multiple denominations using a coin sorting sensor placed along a coin path. a reference value storage means, an allowable range setting resistor for setting an allowable range from an average value of inspection reference values for specie coins;
a specie tolerance range value setting means for setting a specie tolerance range value based on the average value stored in the reference value storage means and the tolerance width set by the tolerance width setting resistor; Comparing means compares the signal from the tolerance range setting means and determines the coin to be a genuine coin when the peak value of the signal from the coin selection sensor is within the tolerance range for genuine coins when the coin passes through the coin selection sensor. It is characterized by having the following.

[For production]

Hereinafter, the operation of the present invention will be explained with reference to FIG. 1, which shows the above-mentioned structure of the present invention. In FIG. 1, average values of characteristics of a plurality of coins are stored in a specie inspection basis average value storage means 2.

Further, the allowable width setting resistor 4 sets the allowable width of each of the plurality of coins, and the specie allowable range value setting means 6 performs an addition/subtraction process based on this allowable width and the average value. Set range values.

The signal emitted from the coin sorting sensor section 1O when a coin passes and the signal emitted from the genuine coin tolerance value setting means 6 are compared by the comparing means 8, and If the signal is at its peak value or within the specie tolerance range, it is determined to be genuine coin.

By the way, when changing this specie tolerance range, it is sufficient to simply replace the tolerance width setting resistor with one with a resistance value that represents the desired tolerance width, and there is no need to specially change the memory contents. , maintenance is extremely easy.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention, and FIG. 3 is a diagram showing the arrangement of the sorting sensor.

In FIG. 2, lO is a coin sorting sensor section, and q
&'B pickup 11, inductance 12, resistance 1
3, a resistor 14, and an oscillator 15, a differential amplifier 16, and a rectifier circuit 17, and a digital value is manually inputted to a comparator to be described later via an AD converter 18.

20 is a control circuit composed of a microcomputer, etc.; 21 is a control procedure and an average value of characteristics of a plurality of coins;
For example, Vl, V2. This is the memory that stores V3.

Reference numeral 22 denotes a base resistor, and 23 to 25 denote tolerance width setting resistors for setting the tolerance width, which are externally connected to the control circuit 20.

26 is an A-D converter for converting the left values of the allowable width setting resistors 23, 24, and 25, such as VA, VB, and VC, into digital values.

27 and 28 are a first comparator and a second comparator, respectively.

The operation of the embodiment of the present invention having the above configuration will be explained.

As shown in FIG. 3, when a certain coin passes through the electromagnetic pickup 11 along the guide rail 29, a pickup signal VO is outputted, passes through the differential amplifier 16, the rectifier circuit 17, and the A-D converter 18, and then reaches its peak value. is input to the first comparator 27 and the second comparator 28.

The control circuit 20 calculates the average values Vl, V2 . Specie allowable ranges for various coins are set from V3, allowable width values V^, VB, and VC determined by the partial pressures of allowable width setting resistors 23, 24, 25, and reference resistor 22, respectively.

For example, for coin A, 1 is retrieved from the memory 21 as the average value of the inspection standard values for genuine coins, and correspondingly, by making the allowable width setting resistor 23 conductive, the output of the A-D converter 26 is By obtaining the allowable width V^ and performing addition and subtraction processing on this in the control circuit 20, V1+VA is obtained as the upper limit value, and Vl-VA is obtained as the lower limit value.

Similarly, for coin B, upper limit value v2◆VB and lower limit value V2-VB, for coin C, upper limit value V3
+VC and lower limit value V3-VC are obtained.

These upper limit values are sequentially sent to the first comparator 27, and the lower limit values are sent to the second comparator 27.
The signal is sent to comparator 28.

Therefore, in the first comparator 27 and the second comparator 28, the peak value of the pickup signal vo mentioned above,
The upper and lower limits are compared, and as shown in Figure 4,
For example, between the upper limit value V2+VB and the lower limit value v2-VB,
If a peak value exists, it is determined that coin B is a genuine coin.

By the way, in order to prevent the acceptance of counterfeit coins, if you want to narrow the above-mentioned tolerance range and perform strict judgment,
For example, in the case of coin B, the external allowable width setting resistor 24
It is a good idea to replace it with one of a predetermined value. In the case of coin C, the allowable width setting resistance 25 is used.

(Effects of the Invention) As is clear from the above description, according to the present invention, the average value of the characteristics of each coin is stored in a digital memory, and the allowable range is set by a resistor, so that the acceptance of each coin is Changes in the range can be handled by changing the resistance constant, which is extremely advantageous in terms of maintenance.

In addition, since the content stored in the memory is only an average value, which is half the time required for the conventional method in which upper and lower limit values are both stored, the time required for manually inputting the data to the memory is reduced by half, which is advantageous in terms of production.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of the present invention; FIG. 2 is a block diagram showing an embodiment of the present invention; FIG. 3 is a diagram showing an example of an electromagnetic pickup as a sorting sensor; It is a figure explaining the range of currency determination. 2... Genie inspection standard average value storage means, 4... Tolerance width setting resistor, 6... Genie tolerance range value setting means, 8... Comparison means, lO... Coin sorting sensor section, 20... Control circuit, 21... Memory, 23, 24. 25... Allowable width setting resistor, 18, 26...
...8-D converter, 27, 28... comparator. Akira Motoya's IFj5. Ward Figure 1 4 Question 2 Ishiga Bitsqua Bu's White Self Reversal Map Figure 3

Claims (1)

[Scope of Claims] A coin sorting device that sorts coins of a plurality of denominations using a coin sorting sensor arranged along a coin path, comprising inspection reference value storage means for storing an average value of inspection reference values for genuine coins; a tolerance range setting resistor for setting a tolerance range from an average value of inspection standard values for genuine coins; a specie tolerance value setting means for setting a tolerance value; and a signal from the coin sorting sensor and a signal from the specie tolerance setting means are compared, and when a coin passes through the coin selection sensor, a coin is selected. 1. A coin sorting device comprising: comparison means for determining a coin to be a genuine coin when the peak value of a signal from a sorting sensor is within an allowable range for genuine coins.