JPH07121786B2 - Control method for stop position of transportation of banknotes, etc. - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a method for controlling a conveyance stop position when a bill or the like is stored in a bill validator (hereinafter also referred to as “Bill Bali”), and particularly, a variation in the conveyance stop position due to a temperature of a motor for conveying the bill or the like. The present invention relates to a method for controlling a transportation stop position of a bill or the like that can be removed. In the drawings below, the same reference numerals indicate the same or corresponding parts.

[Prior art]

4A to 4C are diagrams showing different conveyance stop positions of the bill until the bill validator (Bill Bali) stores the bill in the safe. In each of these figures, 1 is a banknote that is determined to be a genuine note, 2 is a storage safe for the banknote 1, and 3 is a storage mechanism for storing the banknote 1 in the safe 2. Reference numeral 4 denotes a position detection sensor for detecting the conveyance position of the bill, which is composed of a light emitting element, a light receiving element and the like. Reference numeral 5 is a banknote transport mechanism including a belt, 6 is a banknote transport path, and 7 is a center of the position detection sensor 4, which is a reference position for banknote transport. Generally, Bilvari identifies a banknote and if it determines that it is a genuine note,
A genuine note signal is output to a main control unit (not shown), and this bill is once transported to a returnable temporary holding position (hereinafter also referred to as an escrow position) and held, and a receipt or refund command from the main control unit is issued. Wait for The conveyance position of the bill 1 at this time is shown in FIG.
That is, the rear end of the bill 1 conveyed in the X direction is detected by the position detection sensor 4, and when the rear end of the bill reaches the brake start position in FIG. The braking of the transport motor (not shown) is started, and the transport of the bill is stopped when the rear end of the bill reaches the escrow position 9. When the bill collection command is received here, the bill barri conveys the bill 1 to the position shown in FIG. At this time, the bill 1 (rear end) is also referred to as a tacho generator (hereinafter also referred to as TG) not shown in the figure by the conveyance motor.
This TG is a sensor attached to one of the drive shafts of the transport mechanism 5, and according to the rotation of the drive shaft, outputs 12 pulses per revolution, for example, to convert the transport distance into the number of pulses. It is a sensor. 4) b) brake starting position from the escrow position 9 of FIG. 4 a)
The paper money 1 is conveyed to 10, and the braking of the conveyance motor is started, whereby the bill 1 (rear end) is stopped at the storage stop position 11. After this, the bill 1 is stored in the storage mechanism 3 as shown in FIG.
Is moved from the transport passage 6 to the inside of the safe 2.

[Problems to be Solved by the Invention]

However, according to the above-described bill transport method, the bill 1
Is transported from the escrow stop position 9 to the position 10 where the brake is started to be stored in the safe, the transport distance is fixed, so there are variations in the brake characteristics of the transport motor and changes in the brake characteristics due to temperature changes. If
It shifts from the target storage stop position 11 and stops. If the paper is fed too much at this time, the front end of the banknote 1 will be in the transport passage 6
There is a problem of hitting the edge of the
In the case of insufficient feeding, there is a problem that the rear end of the banknote 1 is caught on the end of the safe 2 and causes a jam. Therefore, it is an object of the present invention to provide a method for controlling the stop position of conveyance of banknotes or the like that is not affected by variations in the motor brake characteristics due to variations in the conveyance motor and temperature changes.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the method of the present invention is a "conveyance motor that conveys banknotes or the like (genuine bills 1 or the like) along a conveyance path (6 or the like) (by driving a conveyance mechanism 5 or the like), A conveyance distance detecting means (tacho generator, TG counter 22, etc.) for detecting the conveyance distance of the conveyance motor is provided, and while carrying out the conveyance of bills and the like inserted through the conveyance motor (such as the identification sensor group 18). After determining the authenticity, etc., the true bills, etc. are conveyed to a temporary holding position (e.g., escrow position 9), stopped and temporarily held, and based on the storage command (from the main control unit, etc.) The banknotes, etc. of the
, Etc.) from the detection position (reference position 7A, etc.) to a storage stop position (11, etc.) at a predetermined distance (TS, etc., hereinafter referred to as storage transfer distance), and then stop the banknotes, etc. 2 etc.) for identifying banknotes or the like stored in a banknote or the like, in which the transportation of the banknotes to the temporary holding position and the storage stop position is stopped by braking the transport motor. When the bills and the like are stopped at the temporary holding position, the conveyance distance (TB1) from the braking start position (brake start position 8 or the like) to the end position (the escrow position 9) is passed through the conveyance distance detection means. (Hereinafter, referred to as a braking distance) is measured and stored, and at the time of stopping at the storage stop position of the banknote or the like, a braking start distance (TK1 or the like) obtained by subtracting the braking distance from the storage conveyance distance in advance. Arithmetic Then, the conveyance motor is braked at a position (brake start position 10 or the like) where it is detected that the bill or the like is conveyed by the braking start distance from the detection position of the position detection sensor via the conveyance distance detection means. To start ''.

[Action]

FIG. 3 is a diagram for explaining the transport principle of the present invention. That is, in the present invention, the braking distance when stopping the bill at the escrow position
A storage unit is newly provided to store the value TB1 converted into the number of TG pulses, and this value TB1 is stored. Also, the value obtained by converting the distance between the reference position 7 and the brake start position 8 into the number of TG pulses is T
K, the value obtained by converting the distance between the reference position 7 and the storage stop position 11 into the number of TG pulses is TS, and the escrow position 9 and the brake start position 1
The value obtained by converting the distance from 0 into the number of TG pulses is TH, and the value obtained by converting the braking distance from the brake start position 10 into the number of TG pulses is T.
Defined as B2. The relationship of the respective distance data at this time is as follows: TS = TK + TB1 + TH + TB2 (1) From the following expression (1A) is obtained. TH = TS-TK-TB1-TB2 (1A) By the way, since the braking distance can be considered as TB1 ≈ TB2 (2), the formula (1A) becomes the following formula (3). TH = TS−TK−2 · TB1 (3) Here, since TK is fixed, even if the braking distances TB2 and TB2 change, the storage stop position 11 of the banknote 1 is stabilized, that is, TS is constant. In order to do so, the transport distance TH may be determined by the equation (3). In addition, the second brake start position 10 from the reference position 7
If the TG pulse conversion value of the distance to is TK1, the following equation (4) is established. TS = TK1 + TB2 (4) Therefore, the following equation (5) is obtained from the equations (4) and (2). TK1 = TS-TB2.apprxeq.TS-TB1 (5) Therefore, the brake start position for the second time as in the embodiment described later.
When 10 is directly determined from the reference position, the transport distance TK1 may be determined by the above equation (5).

【Example】

FIG. 1 is a block diagram showing a position embodiment of the present invention, and FIG. 2 is a flow chart showing the operation of FIG. In FIG. 1, reference numeral 16 is a control unit for controlling the entire building burr and is composed of a microcomputer or the like. Reference numeral 17 is a readable / writable storage unit belonging to the control unit 16, and 18 is an identification sensor group for identifying the authenticity, denomination, etc. of the bills conveyed in the X-direction through the conveyance passage 6, and the identification data 18a is the control unit 16 Read by. Reference numeral 19 denotes a TG pulse output unit that outputs a tacho generator pulse 19a. The TG pulse 19a is counted by a TG counter 22, and the counter count value 22a is read by the control unit 16. 20 is a lever-type position detection sensor provided closer to the storage safe 2 than the light-detection type position detection sensor 4 described in FIGS. 3 and 4, and this position detection sensor 20 is a genuine bill 1
When passing through, the lower end of this lever is
It is pushed up while rotating around the lever shaft 20a as shown by the dotted line. Therefore, the new reference position for detecting the rear end of the bill 1 is 7A. Next, the operation (of the control unit 16) in FIG. 1 will be described with reference to FIG. In the following, the symbols S1 to S18 indicate the steps in FIG. When the control unit 16 detects insertion of a bill through a sensor (not shown) (S1, branch Y), the conveyance mechanism 5 is operated to pass the bill below the identification sensor group 18 along the conveyance passage 6. To carry (S2). After that, the control unit 16 determines the authenticity of the bill based on the identification data 18a obtained from the identification sensor group 18 (S3), and when the determination is true (S4, branch Y), TG
The brake start position 8 with respect to the escross position 9 is detected from the count value 22a of the counter, and the conveyance motor brake is started at this position 8 and at the same time, the TG counter 22 is cleared and the counting is restarted (S5, S6). ). Then, the control unit 16 determines that the bill 1 (rear end) has stopped at the escrow position 9 after a lapse of a predetermined time, for example, 50 ms (S7, branch Y), and outputs a genuine note signal to a main control unit (not shown). Along with
The count value of the TG counter 22 at this time (TB1 corresponding to the braking distance) is stored in the storage unit 17, and the escrow state is held (S8). If it is determined to be false in step S4 (branch N),
The conveyance of the bill is stopped (S15), and the return processing is performed (S15).
16) Return to the standby state of step S1. Next, if a return instruction is received from the main control unit (S9, branch Y), return processing is performed (S16), while if a payment instruction is received (S9, branch N → S10, branch Y), The conveyance is started to store the bill 1 in the storage safe 2 (S11). The banknote 1 to be collected is conveyed to the reference position 7A where the rear end of the banknote exceeds the position detection sensor 20. At this time, the control unit 16
According to the above formula (5), from the reference position 7A to the storage stop position 11
From the value TS, which is obtained by converting the known distance to the number of TG pulses,
Braking distance TG pulse number conversion value T stored in storage unit 17
A value TK1 (that is, a value obtained by converting the transport distance from the reference position 7A to the brake start position 10 into the number of TG pulses) is calculated by subtracting B1 (S12). Then, the control unit 16 detects that the rear end of the bill 1 has passed the reference position 7A (S13, branch Y), and then executes the above step.
When the banknote 1 is transported by the number of TG pulses of TK1 calculated in S12 (S14, branch Y), braking is started (S17). The banknote 1 thus conveyed has a braking distance TB2 (≈TB1)
And the stop at the predetermined storage stop position 11 is completed. Next, the control unit 16 operates the storage mechanism 3 to store the banknote 1 in the storage safe 2 (S18) and returns to the standby state of step S1 to wait for the insertion of the next banknote.

【The invention's effect】

According to the present invention, the braking distance at the time of stopping the conveyance at the escrow position is stored, and the braking start position to the storage stop position is calculated using the braking distance. Even in this case, the bill can be stopped at the target storage stop position with high accuracy and stability.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of FIG. 1, FIG. 3 is a drawing for explaining the transport principle of the present invention, and FIG. 4 is a bill storing operation. FIG. 1: genuine banknote, 2: storage safe, 3: storage mechanism, 5: transport mechanism, 6:
Transport path, 7A: reference position, 8 and 10: brake start position, 9: escrow position, 11: storage stop position, 16: control unit, 17: storage unit, 18: identification sensor group, 19: TG pulse output unit , 20: Position detection sensor, 22: TG counter, TB1, TB2: Braking distance (TG
Pulse number conversion value), TK1: Distance from reference position to braking start position (TG pulse number conversion value), TS: Distance from reference position to storage stop position (TG pulse number conversion value).

Claims (1)

[Claims] 1. A transport motor for transporting bills and the like along a transport path, and a transport distance detecting means for detecting a transport distance of the transport motor, wherein the transport of bills and the like inserted through the transport motor is performed. While performing the determination of the authenticity and the like, the true bills are conveyed to the temporary holding position, stopped and temporarily held, and the bills are further transferred to the position detection sensor of the position detection sensor based on the storage command. An identification device for bills or the like that conveys the bills to a storage stop position at a predetermined distance (hereinafter referred to as a storage conveyance distance) from a detection position and stops the bills, and stores the bills in a storage safe. In an identification device for banknotes, etc., in which transportation to the temporary holding position and the storage stop position is performed by braking of the transportation motor, when the banknotes, etc. are stopped at the temporary holding position, The transport distance from the start position to the end position of the braking (hereinafter referred to as a braking distance) is measured and stored via the sending distance detecting means, and when the bill or the like is stopped at the storage stop position, the storage transport is performed in advance. A braking start distance calculated by subtracting the braking distance from the distance is calculated, and it is detected that the bill or the like has been conveyed by the braking start distance from the detection position of the position detection sensor via the conveyance distance detecting means. A conveyance stop position control method for bills and the like, characterized in that braking of the conveyance motor is started at a position.