Method for controlling solenoid for opening and closing shutter of automated teller machine and device for opening and closing shutter of automated teller machine

Abstract

A method for controlling a solenoid for opening and closing a shutter of an automated teller machine according to one embodiment in which an opening part is opened and closed by moving the shutter with a driving force of the solenoid by applying a voltage, is characterized in that an opening operation for opening the opening part by moving the shutter in one direction by pulling or pushing the solenoid, and a closing operation for closing the opening part by moving the shutter in the opposite direction to the one direction by pushing or pulling the solenoid in the opposite direction as the opening operation are performed, and the shutter is opened and closed by controlling the duty ratio of the voltage applied to the solenoid in a stepwise manner for each set time period.

Description

Solenoid control method for opening and closing a shutter of a financial automation machine and shutter opening and closing device of a financial automation machine

[0001] The present invention relates to a solenoid control method for opening and closing a shutter of a financial automation device and a shutter opening and closing device of a financial automation device, and more specifically, to a solenoid control method for opening and closing a shutter of a financial automation device and a shutter opening and closing device of a financial automation device capable of reducing collision noise when opening and closing a shutter.

[0002] The deposit and withdrawal section of a financial automation machine is equipped with a shutter to open or close an opening for inserting or receiving a medium. Typically, the structure is such that when the shutter moves downward, the opening opens, and when the shutter moves upward, the opening closes.

[0003] Recently, for the purpose of preventing the installation of a device to steal customers' credit information by attaching a fake shutter to the outer surface of the financial automation machine shutter, a structure is being used in which a flange-shaped shutter wing is formed on the upper part of the shutter that blocks the opening of the deposit and withdrawal section and protrudes forward by a predetermined length.

[0004] However, when opening or closing a shutter with shutter wings formed in this manner, if a solenoid is used as a driving means for opening or closing the shutter, voltage is applied to the solenoid in an ON or OFF manner and driven, so there is a problem in that severe noise is generated due to the impact when the shutter wings collide with the inner lower and upper sides of the opening of the entry / exit section as the shutter moves rapidly to open or close.

[0005] When a stepper motor is used as a driving means to open and close the shutter, the shutter can move and open at a gradual speed, which has the advantage of reducing noise; however, compared to using a solenoid, it has the disadvantage of increasing manufacturing costs.

[0006] Therefore, there is a need for a control method that minimizes noise generation during shutter opening and closing while using a solenoid, which has a relatively low manufacturing cost, as a driving means for opening and closing the shutter.

[0007] Prior art related to a method for opening and closing a shutter of a financial automation device is disclosed in Korean Registered Patent No. 10-1550683.

[0008] The present invention has been devised to solve the aforementioned problems, and aims to provide a solenoid control method for opening and closing a shutter of a financial automation device and a shutter opening and closing device of a financial automation device that can reduce noise generated during the opening and closing of the shutter while using a solenoid with a relatively low cost for opening and closing the shutter.

[0009] The solenoid control method for opening and closing a shutter of a financial automation device according to the present invention for implementing the purpose described above is a solenoid control method for opening and closing a shutter of a financial automation device that opens and closes an opening by moving the shutter with the driving force of the solenoid by applying voltage, and is characterized by performing an open operation in which the shutter is moved in one direction by pulling or pushing the solenoid to open the opening, and a close operation in which the shutter is moved in the opposite direction to the open operation by pushing or pulling the solenoid to close the opening in the opposite direction to the one direction, wherein the duty ratio of the voltage applied to the solenoid is controlled in a stepwise manner according to a set time interval to open and close the shutter.

[0010] It can be configured such that, during the opening operation, the solenoid is pulled and the shutter is moved downward to open the opening, and during the closing operation, the pulled force of the solenoid is released and the shutter is moved upward by the elastic force of the elastic member to close the opening.

[0011] When the above-mentioned open operation occurs, the duty cycle of the voltage applied to the solenoid can be configured to gradually increase in a stepwise manner.

[0012] When the above-mentioned opening operation occurs, the duty cycle of the voltage applied to the solenoid can be gradually increased in a stepwise manner, and after the shutter is fully opened, the duty cycle can be controlled to maintain a state where it is lowered to a set value so that a force holding the shutter acts.

[0013] When the above closing operation is performed, the duty cycle of the voltage applied to the solenoid can be configured to gradually decrease in a stepwise manner.

[0014] When the above-mentioned closing operation occurs, the duty cycle of the voltage applied to the solenoid is gradually lowered in a stepwise manner to set an operating interval at which the shutter closes rapidly, and after the operating interval, a margin interval is additionally set to lower the duty cycle of the voltage applied to the solenoid so that the shutter closes at a gradual speed.

[0015] The above operating range is set based on experimental results according to the magnitude of the voltage applied to the solenoid, and the above margin range may additionally set one or two stages by lowering the duty cycle of the voltage applied to the shutter after the above operating range.

[0016] The shutter opening and closing device of the financial automation device of the present invention comprises: a shutter that moves up and down to open and close an opening formed on the front of a deposit and withdrawal unit; a solenoid that moves the shutter up and down by being driven by the application of voltage; and a control unit that controls the opening operation to open the shutter by pulling or pushing the solenoid to move the shutter in one direction to open the opening, and the closing operation to close the opening by pushing or pulling the solenoid in the opposite direction to the opening operation to move the shutter in the opposite direction to the one direction, wherein the duty ratio of the voltage applied to the solenoid is controlled in a stepwise manner according to a set time interval.

[0017] When the above-mentioned opening operation occurs, the control unit can control the voltage applied to the solenoid to be gradually increased in a stepwise manner, and then, after the shutter is fully opened, the duty ratio applied to the solenoid is gradually increased in a stepwise manner so that the duty ratio is lowered to a set value and maintained in a state where the force holding the shutter acts.

[0018] When the above-mentioned closing operation occurs, the control unit can control the shutter to close at a gradual speed by gradually lowering the duty cycle of the voltage applied to the solenoid in a stepwise manner, setting an operating interval at which the shutter closes rapidly as the duty cycle of the voltage applied to the solenoid is gradually lowered in a stepwise manner, and additionally setting a margin interval after the operating interval in which the duty cycle of the voltage applied to the solenoid is lowered.

[0019] A flange-shaped shutter wing may be formed on the upper part of the shutter, protruding forward for a predetermined length and contacting the inner upper and lower parts of the opening during the opening and closing operations of the shutter.

[0020] According to the solenoid control method for opening and closing a shutter of a financial automation device and the shutter opening and closing device of a financial automation device according to the present invention, the collision noise of the shutter can be reduced by controlling the duty ratio of the voltage applied to the solenoid when opening and closing the shutter to be applied in a stepwise manner by dividing it into set time intervals.

[0021] In addition, by using a relatively inexpensive solenoid, the collision noise of the shutter can be reduced to a level comparable to that of using a relatively expensive stepper motor, thereby reducing the manufacturing cost of the device for opening and closing the shutter.

[0022] FIG. 1 is a perspective view of a financial automation device according to the present invention with the shutter open.

[0023] FIG. 2 is a side view of FIG. 1,

[0024] FIG. 3 is a perspective view of a financial automation device according to the present invention with the shutter closed.

[0025] FIG. 4 is a side view of FIG. 3,

[0026] FIG. 5 is a solenoid control block diagram for opening and closing a shutter of a financial automation device according to the present invention,

[0027] FIG. 6 is a voltage duty ratio data table for solenoid control when opening the shutter of a financial automation device according to the present invention,

[0028] Figure 7 is the data graph of Figure 6,

[0029] FIG. 8 is a voltage duty ratio data table for solenoid control when closing the shutter of a financial automation device according to the present invention,

[0030] Figure 9 is the data graph of Figure 8,

[0031] FIG. 10 is a data table for setting the operating range and margin range of a solenoid according to the magnitude of the voltage applied when closing the shutter of a financial automation device according to the present invention.

[0032] ** Explanation of Symbols **

[0033] 100 : Deposit / Withdrawal Section 110 : Opening

[0034] 200 : Shutter 210 : Shutter wing

[0035] 220 : Shutter rotation axis 230 : Roller

[0036] 240 : Elastic member support 250 : Elastic member

[0037] 300 : Solenoid 310 : Load

[0038] 320 : Guide hole 330 : Elastic member

[0039] 331,332 : Elastic member support 400 : Link

[0040] 410 : Link rotation axis 420 : Guide axis

[0041] 430 : 1st seating groove 440 : 2nd seating groove

[0042] 500: Shutter opening / closing signal input unit 600: Control unit

[0043] 700 : Voltage regulator

[0044] The configuration and operation of a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings.

[0045] First, with reference to FIGS. 1 to 4, an embodiment of the shutter opening and closing operation of a financial automation device to which the present invention is applied will be described. FIG. 1 is a perspective view of the shutter of a financial automation device according to the present invention in an open state, FIG. 2 is a side view of FIG. 1, FIG. 3 is a perspective view of the shutter of a financial automation device according to the present invention in a closed state, and FIG. 4 is a side view of FIG. 3.

[0046] A financial automation device to which the present invention is applied is equipped with a deposit / withdrawal unit (100) for a customer to insert or receive a medium, and a shutter (200) that moves up and down to open and close an opening (110) formed on the front of the deposit / withdrawal unit (100). A flange-shaped shutter wing (210) may be formed on the upper part of the shutter (200), protruding forward for a predetermined length and contacting the inner upper and lower parts of the opening (110) during the opening and closing operations of the shutter (200).

[0047] When the shutter (200) moves downward, the opening (110) becomes open, and when the shutter (200) moves upward, the opening (110) becomes closed.

[0048] The opening and closing operation of the opening (110) by the upward and downward movement of the shutter (200) is performed by the driving of the solenoid (300) and the interlocking of the link (400) that connects the solenoid (300) and the shutter (200).

[0049] In one embodiment, when voltage is applied to the solenoid (300), the rod (310) receives a force in the direction of being pulled, and when the applied voltage is cut off, the rod (310) is pushed by the elastic force of the elastic member (330) and returns to its original extended state.

[0050] One end of the elastic member (330) is supported by an elastic member support (331) formed on the rod (310), and the other end of the elastic member (330) is supported by a fixed shaft (332). The fixed shaft (332) is located inside a guide hole (333) formed transversely on the rod (310) to guide the forward and backward movement of the rod (310).

[0051] The above link (400) is provided to be rotatable around a link rotation axis (410) formed at the lower end, and a guide axis (420) is formed at the middle part of the link (400). The guide axis (420) is located inside a guide hole (320) formed in the vertically elongated shape of the rod (310). Accordingly, when the rod (310) moves back and forth, the guide axis (420) moves relative to the guide hole (320) in the vertical direction, and the link (400) rotates around the link rotation axis (410).

[0052] A first mounting groove (430) is formed on the lower side of one side of the link (400), and a second mounting groove (440) in the shape of a hook is formed on the upper side thereof. As shown in FIG. 2, the roller (230) formed on the shutter (200) is supported in the first mounting groove (430) when the shutter (200) is rotated downward and opened, and as shown in FIG. 4, the roller (230) is supported in the second mounting groove (440) when the shutter (200) is rotated upward and closed.

[0053] The above shutter (200) rotates around a shutter rotation axis (220) provided in the rear part, and the above roller (230) is provided in the middle part of the shutter (200). An elastic member support part (240) is formed on one side of the above roller (230), and the lower end of an elastic member (250) provided in the vertical direction is supported on the above elastic member support part (240). The above elastic member (250) applies an upward elastic force to the shutter (200) and applies force in the direction in which the shutter (200) closes.

[0054] In this way, the elastic member (330) connected to the rod (310) and the elastic member (250) connected to the shutter (200) exert an elastic force in the direction in which the shutter (200) closes.

[0055] As illustrated in FIGS. 1 and 2, when the opening (110) of the shutter (200) is opened, the rod (310) is pulled to the right direction according to FIGS. 2 by the voltage applied to the solenoid (300), and in conjunction with this, the link (400) is rotated clockwise around the link rotation axis (410), the roller (230) provided on the shutter (200) is supported in the first seating groove (430) of the link (400), and the shutter (200) is rotated counterclockwise around the shutter rotation axis (220) so that the opening (110) is in an open state.

[0056] As illustrated in FIGS. 3 and 4, when the opening (110) is closed, the opening (110) is closed, and the rod (310) is pushed to the left by the elastic force of the elastic member (330) due to the interruption of the voltage applied to the solenoid (300), and in conjunction with this, the link (400) rotates counterclockwise around the link rotation axis (410), and the roller (230) provided on the shutter (200) moves to a position supported by the second seating groove (440) of the link (400), and the shutter (200) rotates clockwise around the shutter rotation axis (220) so that the opening (110) is closed.

[0057] Hereinafter, with reference to FIGS. 5 to 10, a solenoid control method for opening and closing a shutter of a financial automation device according to the present invention will be described.

[0058] Referring to FIG. 5, when a customer selects a menu such as deposit or withdrawal of a financial automation machine for financial transactions, the signal is transmitted to a shutter opening / closing signal input unit (500), and the shutter opening / closing signal input unit (500) transmits a shutter opening / closing signal to a control unit (600).

[0059] The control unit (600) transmits a signal for the opening or closing operation of the shutter to the voltage control unit (700), and the voltage control unit (700) controls the duty cycle of the voltage applied to the solenoid (300) according to the duty cycle of the voltage set to match the opening or closing operation of the shutter (200). Here, the duty cycle refers to the ratio of the time during which the voltage is applied. That is, when the total sum of the time during which the voltage is applied and the time during which it is not applied is set to 100, it refers to the ratio of the time during which the voltage is applied.

[0060] The solenoid control method for opening and closing a shutter of a financial automation device according to the present invention is a solenoid control method for opening and closing an opening (110) by moving a shutter (200) by the driving force of a solenoid (300) by applying voltage, wherein the solenoid (300) is pulled or pushed to move the shutter (200) in one direction to open the opening (110), and the solenoid (300) is pushed or pulled in the opposite direction to the opening operation to move the shutter (200) in the opposite direction to the one direction to close the opening (110), and the solenoid (300) is pushed or pulled in the opposite direction to close the opening (110), thereby controlling the duty cycle of the voltage applied to the solenoid (300) in a stepwise manner according to set time intervals so that the shutter (200) is opened and closed smoothly without sudden collision, thereby minimizing noise generation.

[0061] In one embodiment, the opening (110) can be opened by pulling the solenoid (300) and moving the shutter (200) downward during the opening operation, and the opening (110) can be closed by releasing the pulled force of the solenoid (300) and moving the shutter (200) upward by the elastic force of the elastic member (250, 330).

[0062] Referring to FIGS. 6 and FIGS. 7, when the Open operation is performed, the duty cycle of the voltage applied to the solenoid (300) is controlled to gradually increase in a stepwise manner.

[0063] In an example, the duty cycle required for the opening operation of the shutter (200) is set to 40% for unlocking the shutter (200), 80% for moving downward rotation to open the shutter (200), and 46% for holding the shutter (200) with a force greater than the elastic force of the elastic member (250, 330) while the shutter (200) is open.

[0064] Steps 1 through 5 unlock the shutter (200) and gradually increase the duty cycle from 40% to 80% in steps with a difference of 10% until it is fully opened, and set the time between each step to 50ms during which no voltage is applied out of a total time of 450ms.

[0065] Then, the duty cycle of the voltage applied to the solenoid (300) is gradually increased in a stepwise manner from step 1 to 5, and after the shutter (200) is fully opened, the duty cycle is controlled to be lowered to a set value (46&) so that a force holding the shutter (200) is applied as in step 6, thereby ensuring that the shutter (200) remains closed and no excessive load is applied to the solenoid (300).

[0066] Referring to FIGS. 8 and 9, when the Close operation is performed, the duty cycle of the voltage applied to the solenoid (300) is controlled to gradually decrease in a stepwise manner.

[0067] In an example, when the shutter (200) closes, the elastic force of the elastic member (250, 330) acts in the direction in which the shutter (200) closes. Therefore, by applying voltage to apply a force holding the shutter (200), the shutter (200) is controlled to close smoothly. To this end, a duty cycle of 46% required to hold the shutter (200) and a duty cycle of 28% required for optimal noise are set.

[0068] Steps 1 through 5 are performed by gradually reducing the magnitude of the pulling force while holding the shutter (200) until the shutter (200) is completely closed, and the duty cycle is gradually reduced in steps from 36% to 20% by a difference of 4%, and the time between each step during which no voltage is applied is set to 200ms out of a total time of 1000ms.

[0069] When the above-mentioned closing operation occurs, there is a point in time when the shutter (200) closes rapidly as the duty cycle of the voltage applied to the solenoid (300) is gradually lowered in a stepwise manner. This is a critical characteristic of the solenoid (300) that occurs as the duty cycle of the voltage applied to the solenoid (300) decreases, and the section to which the shutter (200) closes rapidly is included is designated and set as the operating section. Based on FIG. 8, the operating section corresponds to Step 3.

[0070] After the above operating section (step 3), a margin section (steps 4 and 5) is additionally set to lower the duty cycle of the voltage applied to the solenoid (300) so that the shutter (200) is controlled to close at a gradual speed.

[0071] Referring to FIG. 10, the operating range is set based on the results of experiments conducted according to the magnitude of the voltage applied to the solenoid (300). In an example, when the voltage magnitude is tested at a low voltage state of 21.6V and a high voltage state of 26.4V, step 3 is set as the operating range when the voltage is at a low voltage state of 21.6V, and step 4 is set as the operating range when the voltage is at a high voltage state of 26.4V.

[0072] When the above 21.6V low voltage state is in the operating section (step 3), steps 4 and 5, which are two additional steps that gradually lower the duty cycle of the voltage applied to the shutter, are set, and when the above 26.4V high voltage state is in the operating section (step 4), step 5, which is one additional step that lowers the duty cycle of the voltage applied to the shutter, is set, thereby controlling the shutter (200) to close more stably while minimizing noise generation when it closes.

[0073] As explained above, the present invention is not limited to the embodiments described above, and obvious modifications can be made by those skilled in the art without departing from the technical spirit of the present invention as claimed in the claims, and such modifications fall within the scope of the present invention.

Claims

1. A solenoid control method for opening and closing a shutter of a financial automation device, wherein the shutter is moved by the driving force of the solenoid by the application of voltage to open and close an opening, Performing an opening operation by pulling or pushing the solenoid to move the shutter in one direction to open the opening, and a closing operation by pushing or pulling the solenoid in the opposite direction to the opening operation to move the shutter in the opposite direction to the one direction to close the opening, A solenoid control method for opening and closing a shutter of a financial automation device, characterized by controlling the duty cycle of the voltage applied to the solenoid in a stepwise manner according to set time intervals to open and close the shutter.

2. In Paragraph 1, When the above opening operation is performed, the solenoid is pulled and the shutter is moved downward to open the opening, and A solenoid control method for opening and closing a shutter of a financial automation device, characterized by releasing the pulled force of the solenoid during the closing operation and moving the shutter upward by the elastic force of an elastic member to close the opening.

3. In Paragraph 2, A solenoid control method for opening and closing a shutter of a financial automation device, characterized by gradually increasing the duty cycle of the voltage applied to the solenoid in a stepwise manner during the above-mentioned opening operation.

4. In Paragraph 3, A solenoid control method for opening and closing a shutter of a financial automation device, characterized by controlling the duty cycle of the voltage applied to the solenoid to gradually increase in a stepwise manner during the opening operation, and maintaining the state in which the duty cycle is lowered to a set value so that a force holding the shutter acts after the shutter is fully opened.

5. In Paragraph 2, A solenoid control method for opening and closing a shutter of a financial automation device, characterized by gradually lowering the duty cycle of the voltage applied to the solenoid in a stepwise manner during the closing operation.

6. In Paragraph 5, A solenoid control method for opening and closing a shutter of a financial automation device, characterized by setting an operating section at the point where the shutter closes rapidly by gradually lowering the duty cycle of the voltage applied to the solenoid in a stepwise manner during the closing operation, and additionally setting a margin section after the operating section in which the duty cycle of the voltage applied to the solenoid is lowered so that the shutter closes at a gradual speed.

7. In Paragraph 6, A solenoid control method for opening and closing a shutter of a financial automation device, characterized in that the above operating section is set based on experimental results according to the magnitude of the voltage applied to the solenoid, and the above margin section is additionally set to a step or two that lowers the duty cycle of the voltage applied to the shutter after the above operating section.

8. A shutter that moves up and down to open and close an opening formed on the front of the inlet / outlet section; A solenoid driven by the application of voltage to move the shutter up and down; A control unit that controls the opening operation to open the shutter by pulling or pushing the solenoid to move the shutter in one direction and close the opening by pushing or pulling the solenoid in the opposite direction to the opening operation to move the shutter in the opposite direction to the one direction, wherein the duty cycle of the voltage applied to the solenoid is controlled in a stepwise manner according to set time intervals; A shutter opening and closing device for a financial automation machine including 9. In Paragraph 8, A shutter opening and closing device for a financial automation device, characterized in that, during the above-mentioned opening operation, the control unit gradually increases the duty ratio of the voltage applied to the solenoid in a stepwise manner, and after the shutter is fully opened, the duty ratio is lowered to a set value and maintained in a state so that a force holding the shutter acts.

10. In Paragraph 8, A shutter opening and closing device for a financial automation device, characterized in that, during the above-mentioned closing operation, the control unit gradually lowers the duty cycle of the voltage applied to the solenoid in a stepwise manner, sets an operating interval at which the shutter closes rapidly as the duty cycle of the voltage applied to the solenoid is gradually lowered in a stepwise manner, and additionally sets a margin interval after the operating interval in which the duty cycle of the voltage applied to the solenoid is lowered to control the shutter to close at a gradual speed.

11. In Paragraph 8, A shutter opening and closing device for a financial automation device, characterized in that a flange-shaped shutter wing is formed on the upper part of the shutter, protruding forward by a predetermined length and contacting the inner upper and lower parts of the opening during the opening and closing operations of the shutter.

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