KR19990050458A - Control Method and Device of Banknote Thickness Detector - Google Patents

Abstract

The present invention relates to a method and apparatus for controlling a banknote thickness detecting element, wherein the thickness detecting element value of the banknote thickness detecting device is detected by a detecting means, and the thickness detecting element is initially set by feeding back the detected thickness detecting element value. After the comparison with the reference value of the device, if a deviation occurs, the thickness detecting device value is automatically set within the allowable range of the reference value, so that the thickness detection of the paper money can be detected more efficiently and the bill is drawn out in two or more sheets. In addition, the banknote thickness detecting device is to detect the banknote thickness continuously without stopping the machine even if an obstacle occurs.

Such a control method of the banknote thickness detecting element includes detecting the banknote thickness through the banknote thickness detecting element; And comparing the detected thickness detector value with a reference value of the preset thickness detector to obtain a deviation, and resetting the output value of the thickness detector value by the deviation value.

Description

Control Method and Device of Banknote Thickness Detector

The present invention relates to a detector element control for detecting banknote thickness, and more particularly, a method of controlling a banknote thickness detector for operating the banknote thickness detector when a banknote is withdrawn from a cash dispenser. And to an apparatus.

Generally, cash dispensers automatically handle the withdrawal, inquiry, and bank transfer processing of cash and checks, such as those performed by cashiers at counters, during off-hours or holidays when customers of financial institutions cannot go through the counters of the branches. It is a financial device to perform.

These ATMs are host computers (Host) of banks in places other than the counters in department stores, department stores, express bus terminals, building premises, etc. for the purpose of streamlining business operations such as non-business hours and holiday operations of financial institutions and improving customer service. Computer) and online (On-line), when the customer inserts the corresponding bankbook, cash card or credit card directly into the card and bank entry slot, the withdrawal is made through the banknote withdrawal unit, and also when the cash and check deposit Do this direct deposit.

In such a cash dispenser, in order to prevent two or more bills from being released at the time of cash withdrawal, the cash dispenser is usually provided with a device for detecting the thickness of the bill.

1 is a schematic perspective view showing a bill thickness detection device of a cash dispenser according to the prior art. As shown therein, the banknote thickness detecting device includes a first bill conveying steel roller 10 and a first bill conveying steel roller 10 that are press-fitted on the shaft 12 of the main frame (not shown). In accordance with the left and right deformation of the second bank transfer roller 14 and the second bank transfer roller 14 of the structure wrapped around the rubber to be installed in contact with the first fixed point (A) to the left, right deformed in steel A sensing lever 16 which rotates around the second fixed point B, and a Hall element 20 which changes a displacement difference caused by left and right movements of the sensor unit 18 of the sensing lever 16 into a current; When the banknote 22 is not conveyed, it is composed of a restoring spring 24 for keeping the sensing lever 16 in close contact with the second bill conveying roller 14 at all times.

When the banknote thickness detecting device of the ATM is configured as described above, when the banknote 22 is transferred between the first and second bank transfer rollers 10 and 14, the outer rubber diameter of the second bank transfer roller 14 is a banknote (22). When contracted by the thickness of), the sensing lever 16 also moves in proportion to the thickness of the bill. The detection lever 16 changes its position along with the expansion of the restoring spring 24 around the second fixed point B, and at the same time, the sensor unit 18 moves inside the hall element 20. At this time, the sensor unit 18 detects the displacement of the banknote 22 by detecting the displacement moved inside the hall element 20.

For example, when setting the voltage drop of the hall element 20 due to the displacement of the sensor unit 18 when one banknote 22 is transferred as a reference value, when two or more banknotes are transferred, the second bank transfer roller The deformation of 14 becomes larger, and the sensor portion 18 in the hall element 20 is moved larger. Accordingly, the voltage drop of the hall element 20 is detected differently from the reference value detected when one banknote is conveyed, and detects multiple transfers of the banknotes.

2 and 3 show a block diagram and a schematic circuit diagram of the banknote thickness detecting device of the cash dispenser.

As shown therein, the banknote thickness detecting apparatus includes a processor 30 for managing the memory 32 and the memory 32 in which the thickness detecting element reference value and the thickness detecting element value reset by the initial value setting unit 36 are stored. A thickness detector 34 for detecting the thickness of the bills transferred according to the control operation of the processor 30, and a data processor 38 for processing the bill thickness value detected by the thickness detector 34 and providing the operator with the thickness value. .

Preferably, the thickness detecting unit 34 detects the banknote thickness in accordance with the detection data of the thickness detecting element.

Referring to the operation of the banknote thickness detecting device configured as described above is as follows.

First, the reference value of the detection element for detecting the banknote thickness is stored in the memory 32 by the processor 30. Then, when a banknote is conveyed through a banknote conveyance system (not shown in figure), the thickness detection part 34 detects banknote thickness.

The thickness detector 34 detects the banknote thickness by the thickness detector, and the detected banknote thickness data is transmitted to the data processor 38. At this time, when a problem occurs in the detection element for detecting the banknote thickness and an error occurs in which the banknote is transferred to two or more sheets, the initial value setting unit 36 adjusts the variable resistance to reset the thickness detector element value. .

That is, as shown in FIG. 3, the banknote thickness value and the memory 32 input from the thickness detector 34 through the input terminal 40 to the non-inverting terminal (+) of the comparator, such as the differential amplifier of the data processing unit 38. If the deviation occurs by comparing the reference value of the thickness detection element is set in the), the user directly operates the variable resistor connected to the inverting terminal (-) to minimize the deviation caused. The banknote thickness value is output through the output terminal 42.

However, in the above-mentioned banknote thickness detecting device of the ATM, the thickness detecting element value is changed according to the operating state of the device, and accordingly, the thickness detecting element value is initially set by the user directly by the variable resistor. There was a problem that the reference value and the error of the detection element is generated can not effectively carry out multiple transfer of bills.

In addition, when adjusting the variable resistance there was a problem that can not be detected continuously by temporarily stopping the operating state of the banknote detector.

Therefore, the present invention detects the thickness detecting element value of the banknote thickness detecting device by the detecting means, feeds back the detected thickness detecting element value, and compares it with the reference value of the thickness detecting element initially set. The thickness detecting element value of the cash dispenser for detecting the thickness of the bill more effectively by automatically setting the thickness detecting element value within the allowable range of the reference value to prevent the withdrawal of more than two bills. The purpose is to provide.

Figure 1 is a schematic perspective view showing a bill thickness detection device of a cash dispenser according to the prior art.

Figure 2 is a block diagram showing a bill thickness detection device of Figure 1;

3 is a schematic circuit diagram of FIG.

Figure 4 is a block diagram showing a control device of the banknote thickness detecting device according to the present invention,

5 is a flowchart illustrating a control process of the banknote thickness detecting device according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: processor 102: memory

104: initial value setting unit 106: data processing unit

108: Feed back part

In order to achieve the above object, the banknote thickness detecting method of an automatic teller machine according to an aspect of the present invention comprises the steps of: detecting the banknote thickness through the banknote thickness detecting element; And comparing the detected thickness detector value with a reference value of a predetermined thickness detector to obtain a deviation, and resetting the output value of the thickness detector value by the deviation value.

Further, in order to achieve the object as described above, the banknote thickness detecting apparatus of the automatic teller machine according to another aspect of the present invention, the storage means and the storage means stored the reference value of the banknote thickness detecting element is controlled and fed back Control means for managing data; Initial value setting means for receiving and setting the fed back data from the control means; Data processing means for comparing and processing said data and said reference value from said initial value setting means; Feedback means for transferring a value compared from said data processing means to said control means.

Preferably, the initial value setting means is characterized in that the digital potential (Digital Photentiomatic).

Preferably, the data processing means is characterized in that it comprises a comparator for comparing the thickness detection element value input from the thickness detection element and the data input from the control means.

Preferably, the feedback means includes a buffer for temporarily storing the data output from the data processing means and an analog / digital converter for converting analog data output from the buffer into digital data and feeding back to the processor. It is done.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a block diagram showing a bill thickness detecting device of an automatic teller machine according to the present invention, the bill thickness detecting device is a processor for setting and storing the thickness detector reference value in the memory 102, and also receives the data fed back 100, an initial value setting unit 104 for resetting the detection element value according to the thickness detection element reference value input from the processor 100, and a detection element value reset by the initial value setting unit 104. In addition, a data processing unit 106 for comparing the detection element values input from the thickness detection element and a feedback 108 for transferring the data output from the data processing unit 106 to the processor 100.

Referring to the setting method of the thickness detector element in the banknote thickness detector configured as described above is as follows.

First, the reference value of the detector for detecting the banknote thickness, that is, the reference value set by detecting the banknote thickness so that the banknotes are withdrawn one by one when the banknote is withdrawn from the cash dispenser is stored in the memory 102 (ST110).

The thickness detecting element reference value stored in the memory 102 is input to the initial value setting unit 104 according to the control operation of the processor 100.

The initial value setting unit 104 is compared with the data value of the thickness detector to be fed back, which will be described later, and detects the element so as to minimize the range of the deviation when the data is different from the reference value of the thickness detector. Includes a setting device, such as a digital potentiometer, to set the initial position of the.

Subsequently, the data output from the initial value setting unit 104 is input to the data processing unit 106, and the data processing unit 106 compares the input data with the thickness detection element value detected during the banknote detecting operation (ST112). .

That is, the data processing unit 106 includes a comparison means such as a differential amplifier, the data output from the initial value setting unit 104 is input to the non-inverting terminal (-) of the comparison means, and to the inverting (+) terminal. The detection element value which detects banknote thickness is input.

The data compared and output by the data processor 106 is returned to the processor 100 through the feedback unit 108. The feedback unit 108 includes a buffer for temporarily storing the analog data value output from the data processor 106 and an analog / digital converter for converting the analog data value into a digital value for input to the processor 100.

The processor 100 receiving the returned data, that is, the data compared by the data processing unit 106, determines whether there is a deviation from the reference value of the thickness detection element previously stored in the memory 102 (ST114).

At this time, when the returned data has an error with the reference value of the thickness detector, it is automatically set within the allowable range of the reference value of the detector by the digital potential included in the initial value setting unit 104 (ST116). .

That is, when the detection value of the thickness detection element is changed and an error occurs with the reference value of the initially set detection element, the position of the banknote thickness detection element may be changed due to a long time operation or may vary depending on the mechanical assembly state. In this case, the thickness detection element value fed back to the processor 100 is automatically set so as to fall within a range of reference values stored in the memory.

Accordingly, the processor 100 compares the thickness detection device value inputted to the data processing unit 106 and returned to the processor 100 and the reference value of the thickness detection device stored in the memory 102 to each other. The value of the thickness detector element to be changed is automatically set within the allowable range of the reference value.

As described above in detail, the present invention detects the thickness detecting device value of the banknote thickness detecting device by the detecting means, feeds back the detected thickness detecting device value, and compares it with the reference value of the initially set thickness detecting device. Then, in the case where a deviation occurs, the thickness detecting element value is automatically set within the allowable range of the reference value, thereby detecting the thickness of the banknote more efficiently, thereby preventing the banknote from being drawn out to two or more sheets, and further, the banknote thickness. Even if the detector fails, there is an effect that can continuously detect the thickness of the bill without stopping the device.

Claims (5)

Detecting the banknote thickness through the banknote thickness detecting element; Comparing the detected thickness detector value with a reference value of a predetermined thickness detector, obtaining a deviation, and resetting the output value of the thickness detector value by the deviation value. Way. Storage means for storing a reference value of the banknote thickness detecting element, and control means for controlling the storage means and managing the fed back data; Initial value setting means for receiving and setting the fed back data from the control means; Data processing means for comparing and processing said data and said reference value from said initial value setting means; And a feedback means for transferring a value compared with said control means from said data processing means. 3. The control apparatus according to claim 2, wherein the initial value setting means is a digital potential. 3. The control apparatus according to claim 2, wherein the data processing means includes a comparator for comparing the thickness detecting element value input from the thickness detecting element with the data input from the control means. 3. The apparatus of claim 2, wherein the feedback means includes a buffer for temporarily storing data output from the data processing means and an analog / digital converter for converting analog data output from the buffer into digital data and feeding back to the processor. Control device for banknote thickness detecting element, characterized in that.