JP3032994B2 - Coin sorting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coin sorting apparatus for judging the correctness and type of coins to be inserted in a public telephone or various vending machines.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 5, a coin sorting apparatus of this kind generates a magnetic field on a coin (coin) sorting orbit by flowing different oscillating currents through coils by two oscillating circuits 32 and 33. The CPU 19 detects changes in the magnetic field when the coin 31 passes through the sorting orbit by the detection circuits 34, 35, A
The data is read through the D converter 37, the input / output circuit 14, and the bus 15, and the read data is used as coin selection data, and it is determined whether or not the coin is genuine. FIG. 6A is a diagram illustrating a state of a change in a magnetic field when a coin passes on a sorting trajectory. The value Y of the magnetic field level while the coin 31 does not pass is at a stable level, and when the coin 31 passes through the sorting orbit, the magnetic field changes and its value becomes X. This minimum value X is used as coin sorting data. use. The minimum value X differs depending on the material of the coin, and has a certain value depending on the material of each coin. Therefore, the use of these values makes it possible to sort each coin. In the case of actual coin sorting,
Since the value X determined by the material of each coin has some variation according to the normal distribution diagram, in order to select as a genuine coin, the genuine coin range is determined by giving a certain width to the detected value X. There is a need. That is, it is necessary to determine X ± Nσ, which is N times the standard deviation value σ of X with respect to the value X, as the genuine range. Although the value of X tends to decrease as the temperature increases, as shown in FIG. 6B, since the temperature characteristics of the materials a to c of the coins are different, the change amount of X with respect to the temperature change Is different for each coin. Therefore, as shown in FIG. 6 (c), the coin sorting rate cannot be improved unless a correction based on temperature is applied to the genuine coin range. For this reason, the conventional coin sorting device performs temperature correction by the following two methods to sort coins. That is, the first method is to add the change in the value of X due to the temperature change to the range of the coins, and the second method is to add a temperature correction to the measurement data when the coin is inserted. This is a method of comparing with data in the specie range.

[0003]

In the case of coin sorting according to the first method of the above-described coin sorting apparatus, as shown in FIG. 6D, the genuine coin range considering the temperature change is the original genuine coin range. In this case, there is a problem that illegal coins such as pseudo coins are selected as genuine coins. Further, in the case of coin sorting by the second method, only coins having a temperature characteristic of the coin having a certain gradient are effective, and in the case of coins having a temperature characteristic gradient different from this, misselection occurs, Therefore, there was a problem that many types of coins could not be sorted out.

[0004]

SUMMARY OF THE INVENTION In order to solve such a problem, the present invention provides a temperature sensor disposed in a coin sorting device for detecting an ambient temperature, and a service receiving service before coin insertion.
And correction calculation means for the area range selection data to selection data area on the basis of the temperature information is stored from the temperature sensor is activated by receiving a request signal indicating a request for correction operation for each coin, correction calculation of the compensation calculation means All hard based on the results
Sorting data rewriting means that rewrites sorting data corresponding to coins at a time, and sorting data rewriting means when coins are inserted
Sorting of the input coin based on the sorted sorting data
And means for sorting coins . Also, when the correction calculation result of the correction calculation means is the same as the previous correction calculation result
Has a means for preventing rewriting of sorted data.
It is provided . Also, in the area range of the sorting data area
Indicates that the specie data indicating the specie is stored as sorting data,
The correction calculating means records an area range in which the genuine data is stored.
Storage means and based on the temperature information from the temperature sensor
To correct the area range where the genuine coin data is stored for each coin.
For the calculation of the area range calculation means and the area range calculation means
Matching / mismatching of the area range based on the storage means
Determination means for determining the selection data, the sorting data rewriting means,
Rewriting selected data when the judging means judges that they do not match
And the area based on the calculation of the area range calculation means.
The range is stored in the storage unit, and the determination unit determines that the values match.
Sometimes , rewriting of the selection data is prevented.

[0005]

[Action] Acceptance indicating service acceptance request before coin insertion
When activated by the request signal, the area range in which the selection data is stored in the selection data area is corrected and calculated for each coin based on the temperature information from the temperature sensor, and “1” is also set in this area range. “0” is written in an area other than the area range. As a result, even if the ambient temperature changes, an appropriate genuine coin range for each coin is determined, and coins can be sorted properly. Further, since the result of the correction operation is not rewritten sorting data if it matches a region ranging from the previous compensation calculation result, rewriting time sorting data is shortened.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the present invention.
The coin sorting device according to the present invention is applied to a public telephone. In FIG. 1, reference numeral 1 denotes an office line, 2 denotes an incoming call detection circuit for detecting an incoming signal arriving at the office line 1, 3 denotes a buzzer that sounds by the incoming signal, and 4 denotes a charging signal that receives a charging signal coming from the office line 1. The receiving circuit 5 receives the D signal coming from the line 1
A DTMF signal receiving circuit for receiving a TMF signal, 6 is a diode bridge, and 7 is a power supply circuit for supplying office power supplied from the office line 1 to each part of the public telephone when off-hook. Reference numeral 8 denotes a communication circuit, 9 denotes a handset, 10 denotes a signal generator for generating a dial signal or the like, 11 denotes a keyboard such as a dial key, 12 denotes a display, 13 and 14 denote input / output circuits,
Reference numeral 15 denotes a bus, 16 denotes a coin sorting unit which sorts and stores inserted coins (coins) and has the same configuration as the coin sorting unit of the conventional coin sorting device shown in FIG. 5, 17 denotes a hook switch, 18
Is a start circuit which is activated by turning on a hook switch by off-hook and drives a GS relay; 19 is a CPU;
0 is a ROM in which programs and the like are stored, and 21 is a RAM.

When such a public telephone is off-hook, the start circuit 18 is activated by turning on the hook switch 17, and the GS relay is driven. As a result, the contact gs1 is closed, and the loop of the office line 1 is closed, thereby closing the office. Power is supplied to each unit through the power supply circuit 7 and the contact g
When s2 is closed, power is supplied to the CPU 19, and the CPU 19 starts processing. When the coin 1 is inserted, the CPU 19 determines whether or not the inserted coin is correct via the coin sorting unit 16 and, if the inserted coin is a genuine coin, accumulates the coin and sets the dial in a dialable state. Thereafter, when the dial key on the keyboard 11 is operated to dial the other party's number, the CPU 19 inputs the dial number, generates a dial signal from the signal generator 10, and sends the dial signal to the office line 1. As a result, when the other party is called and the other party responds, the accumulated coins are stored and the communication with the other party is started by the arrival of the charging signal. After that, when the call is continued, the accumulated coins are stored by the periodically arriving billing signal, and when there are no more coins to be stored, the central office 1
Loop is forcibly released.

Here, in order to select coins, a magnetic field generated by an electromagnetic coil is applied to the coin selection trajectory, and when the inserted coin 31 passes through the selection trajectory, the magnetic field changes. Is read by the CPU 19 via the AD converter 37 as an electrical impedance change. The read value X differs depending on the material of the coin, and shows a substantially constant value. However, when a plurality of coins of the same type are inserted, a slight variation is observed, and the result shows a normal distribution. In view of the above situation, when actually performing coin sorting on a public telephone, as shown in FIG. 2, an average value of the values X for each coin is taken as X (average value), and this is taken as the value X. N of the standard deviation σ of
X (average value) ± Nσ taking into account the factor (actually three times) is defined as a genuine coin range, and coin selection at a certain temperature can be performed by using this as selection data.

However, the above value X (average value) changes depending on the temperature, and the amount of the change differs depending on the material of the coin. Here, the temperature at which X (average value) is obtained is obtained by the temperature sensor circuit 36 and is used as a reference temperature, and a correction value is calculated from the difference between this reference temperature and the temperature at which the public telephone was actually used. Then, true sorting data can be obtained. That is, the operating temperature of the public telephone is T ₁ , the reference temperature is T _2, and the temperature is 1 ° C.
Assuming that the correction amount per hit is C, the correction value Z of X (average value)
Z = (T ₂ −T ₁ ) × C (1), and the value obtained by adding the correction value Z to X (average value) is the temperature T ₁
Is true X (average value). Thus, true selection data X (average value) ± Nσ is obtained.

In the present embodiment, there are six types of sensors including an oscillation circuit and a detection circuit in order to select inserted coins. Therefore, the selection data for selecting one type of coin is X (average value). ) 6 kinds of sorting data of ₁ ± Nσ _{1 to} X (average value) ₆ ± Nσ ₆ are provided. This selection data is actually stored on the RAM 21 in the form shown in FIG.
Each of the sensors has an area of 256 bytes. In addition, since there are eight types of coins handled by this public telephone, the area actually has eight times the area. As described above, in the public telephone according to the present embodiment, since the CPU 19 is not activated unless the user goes off-hook, the selection data in consideration of the temperature correction cannot always be created. Therefore, when the hook is off-hook, the temperature from the temperature sensor circuit 36 is read and the selected data is corrected to update the selected data.

Then, the temperature is corrected at the time of off-hook, and the selected data as a result, that is, the data in the genuine range corresponding to the temperature at this time is, for example, "121" to "124".
In this case, “1” is stored in the areas 121 to 124 where the selection data is stored, and “0” is stored in the areas other than the above-described areas. The sorting data is updated for each of the six types of sensors for one coin in accordance with the temperature correction, and when this is completed, the same updating is performed for the other seven types of coins. After the selection data is stored in the RAM 21 and the coin 31 is inserted, the data of the inserted coin is input to the CPU 19 via the 8-bit AD converter 37.
Numeral 9 recognizes the type of the inserted coin and the corresponding sensor through which the inserted coin passes by a sensor input or the like (not shown), selects the head address (corresponding to the area 0) of the corresponding sorting data storage area, and also stores the input data. Assuming that the value is “122”, the area 122 is accessed from the input data. As a result, since “1” is stored in the area 122, the CPU 19 determines that the coin is a genuine coin. The data input via the AD converter 37 is “12”.
If the value is "0", the data stored in the area 120 is "0", so that it is determined that the money is fraudulent. CP
U19 performs such processing also on the selection data of the other five types of sensors, and as a result of these references, if all the data is “1”, determines that the inserted coin is a genuine coin.

As described above, at the time of off-hook, the temperature information from the temperature sensor circuit 36 is detected and the selection data is corrected. However, rewriting all data at the time of such correction of coin selection data is
This is not very desirable because rewriting takes time. According to the present invention, when the result of performing the temperature correction calculation in consideration of this is the same as the previous result, the sorting data is not rewritten.

That is, FIG. 4 shows a CPU performing such an operation.
19 is a flowchart showing the operation of the control unit 19. First, when the corrected selection data is written in the selection data area of the RAM 21 at the time of off-hook, the range in which the data “1” is written is stored (step ST1). After that, the user inserts a coin and talks with the other party. Then, when the user goes off-hook, the temperature of the selection data is corrected, and a range in which "1" is newly written in the selection data area is calculated (step ST2). The calculation result is compared with the storage result stored in step ST1. If both ranges match, the process returns to step ST2 without rewriting the selection data and performs the temperature correction operation on the selection data of the next coin. (Step ST3). If the calculation result in step ST2 and the storage result stored in step ST1 do not match, the selected data is rewritten, and
Similarly to 1, after storing the range in which the data "1" is written, the process returns to step ST2 to perform a temperature correction operation on the selection data of the next coin (step ST4). As described above, the writing range of coin selection data by temperature correction at the time of off-hook is calculated, and data writing is not performed when this range matches the writing data area range of selection data at the time of the previous off-hook. Things. As a result, the sorting data rewriting time at the time of off-hook is reduced from about 2400 msec to 200 msec,
The time from when the user goes off-hook until the public telephone becomes usable is greatly reduced.

[0014]

As described above, the present invention provides a
By the acceptance request signal indicating the acceptance acceptance of the service before launch
When activated, the area range for storing the sorting data in the sorting data area is corrected and calculated for each coin based on the temperature information from the temperature sensor. The genuine coin range is determined, and therefore, coins inserted thereafter can be accurately selected. Further, since if the result of the correction calculation is consistent with the area range from the previous compensation calculation result was not allowed to rewrite the selection data, public rewriting time of the sorting data is reduced, the station power after off-hook is supplied In the case of a telephone or the like, it can be immediately made usable.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of a device to which a coin sorting device of the present invention is applied.

FIG. 2 is an explanatory diagram showing a correction state according to temperature of sorting data used in a coin sorting device.

FIG. 3 is an explanatory diagram showing a storage state of the selection data.

FIG. 4 is a flowchart showing the operation of the coin sorting device.

FIG. 5 is a block diagram of a coin sorting device.

FIG. 6 is a diagram showing a correction state of sorting data in a conventional coin sorting device.

[Explanation of symbols]

 Reference Signs List 1 station line 7 power supply circuit 9 transmitter / receiver 10 signal generator 11 keyboard 12 display 16 coin sorting unit 17 hook switch 18 start circuit 19 CPU 20 ROM 21 RAM 31 coin 32,33 oscillation circuit 34,35 detection circuit 36 Temperature sensor 37 AD converter

Continuation of the front page (56) References JP-A-63-318694 (JP, A) JP-A-3-29047 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G07D 5 / 08 104

Claims (3)

(57) [Claims] 1. A service acceptance request is indicated before a coin is inserted.
A coin sorting device that is provided in a device that generates an acceptance request signal and that sorts inserted coins based on sorting data stored in a sorting data area, a temperature that is provided in the coin sorting device and detects an ambient temperature. a sensor, and a correction calculation unit that an area range in which the selection data is stored in the selection data area based on the temperature information correction operation for each coin from the activated by the receptor request signal the temperature sensor, the correction calculation The sorting data corresponding to all coins is written at once based on the correction calculation result of the means .
Sorting data rewriting means to replace , and said sorting when coins are inserted
Based on the sorting data rewritten by the data rewriting means
There are coin sorting apparatus characterized by comprising a coins sorting means for performing selection of the deposited coin. 2. The correction operation result according to claim 1, wherein the correction operation result of the correction operation means is a previous correction operation result.
If it is the same as
A coin sorting device comprising a change preventing means . 3. A genuine coin indicating a genuine coin in the area range of the selection data area according to claim 1.
Data is stored as the selection data, and the correction calculating means is configured to store the genuine data.
Storage means for storing an area range; area range calculating means for performing a correction operation for each coin on an area range in which genuine coin data is stored based on temperature information from the temperature sensor;
The area range based on the calculation of the range calculating means and the storage means
Determination means for determining whether the area range matches or not
The sorting data rewriting means determines that the determination means does not match.
Rewrite the sorting data when
The area range based on the operation of the area range operation means is stored.
Stored in means, said determining means coin sorting device comprising a can Turkey to prevent rewriting of selection data when it is determined that the match.