JPH07267428A - Conveyance monitoring device and paper conveyance control device for paper conveying device - Google Patents

Abstract

PURPOSE:To improve the paper conveyance processing efficiency by reducing the irregular catch-up state, and surely monitoring the catch-up state in a paper conveying device continuously conveying paper sheets one by one. CONSTITUTION:The first counter 12 calculates the length of a paper sheet based on the detected result of the first sensor 1. When the paper sheet is detected by the second sensor 2, the second counter 13 calculates the length of the paper sheet based on the detected result of the second sensor 2. The first counter 12 and a transit time register 17 calculate the transit time of the paper sheet between the first and second sensors 1, 2 based on the detected results of the first and second sensors 1, 2. An AND circuit 23 outputs a catch-up detection signal E when the calculated results of the length of the paper sheet by the first counter 12 and the second counter 13 are inconsistent as a result of comparison and the transit time exceeds the preset standard transit time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper transport monitoring device and a paper transport control device used in a paper transporting device for continuously transporting paper such as paper money one by one.

[0002]

2. Description of the Related Art Conventionally, for example, a cash dispenser, a bill exchange device, and the like, use a paper transporting device for continuously transporting paper, which is a bill, one by one. In such a paper transport device, a reliable transport operation is required for each banknote in order to count the number of inserted banknotes and to reliably perform an inspection process for identifying the type of banknote.

For this reason, in the paper transporting device, a transport monitoring device for monitoring the transport state of the paper is provided at a predetermined position (usually at a plurality of positions) of the transport path. As shown in FIG. 5 (A), this transport monitoring device normally includes a first sensor 1 and a second sensor 2 which are arranged at a predetermined interval in the transport direction of the transport path. Each of the sensors 1 and 2 is, for example, a photoelectric sensor including a light projector 1a, 2a and a light receiver 1b, 2b. The conveyance monitoring device monitors the passage time (residence time) of the banknotes between the sensors 1 and 2, and determines that a jam has occurred when it exceeds the standard passage time.

In addition to such a jam determination function, there is a transfer monitoring device having a function of monitoring the catching state of a banknote being transferred. As shown in FIG. 5B, the catching-up state is a state in which the succeeding bill mc catches up with the bill mb being conveyed in advance and overlaps with it, and is conveyed as if it were one bill. Is. When such a catch-up state occurs, an inspection process or the like for identifying the type of each banknote becomes impossible.

A conventional catching state monitoring method is shown in FIG.
As shown in (A), first, the first bill length (the bill length) of the bills ma to md is measured according to the detection of the first sensor 1, and further according to the detection of the second sensor 2. The second bill length is measured. Comparing the measured first and second bill lengths,
If they do not match, it is determined that the catch-up state has occurred.

[0006]

A conventional conveyance monitor having a function of monitoring the catching state measures the length of paper such as bills to be conveyed for each sensor, and when the measurement results do not match. It has been determined that a catch-up condition has occurred. In such a catching state monitoring method, the length measuring process for each sensor is a process based on the detection time of the leading edge and the trailing edge of the sheet. Therefore, when the sheet temporarily stays when passing through the sensor, the sheet length of the sheet is measured as a length longer than the standard. Therefore, an erroneous determination of the catch-up state is likely to occur, which becomes a factor of reducing the efficiency of the carrying process.

An object of the present invention is to reduce the erroneous determination of the catch-up state and to reliably monitor the catch-up state in a sheet-conveying apparatus for continuously conveying the sheets one by one, and as a result, the sheet conveys. It is to improve processing efficiency.

[0008]

SUMMARY OF THE INVENTION A first aspect of the present invention is a sheet transporting apparatus for continuously transporting sheets of a predetermined length one by one, with first and second sensors arranged at predetermined intervals. The conveyance monitoring device calculates the length of the conveyed sheet and the passing time between the sensor means based on each detection result of the means. In this conveyance monitoring device, when the sheet lengths of the first and second sensor means do not match and the passing time exceeds the preset standard passing time, the sheet catching state occurs. It is equipped with a catch-up monitoring means for judging. A second aspect of the present invention is a paper conveyance control device that stops the paper conveyance device in response to a catch-up detection signal of the conveyance monitoring device having the catch-up monitoring means. This transport monitoring device is a first counter means for outputting a count value corresponding to the length of a sheet based on the detection result of the first sensor means, and a first sheet length for indicating the count value as the length of the sheet. The register means for storing the data, the second counter means for outputting the count value counted based on the detection result of the second sensor means as the second paper length data indicating the length of the paper, and the first counter means Passing time calculating means for calculating the passing time for the sheet to pass between the sensor means based on the count value, first comparing means for comparing the first sheet length data with the second sheet length data, and the passing time A second comparing means for comparing with a preset standard passage time and a catch-up monitoring means are provided.

[0009]

In the first aspect of the present invention, the first sheet length calculating means calculates the sheet length based on the detection result of the first sensor means. Further, when the paper is detected by the second sensor means, the second paper length calculating means calculates the length of the paper based on the detection result of the second sensor means. On the other hand, the passage time calculation means calculates the passage time during which the sheet has passed between the first and second sensor means based on the detection results of the first and second sensor means. The catch-up monitoring means compares the respective calculation results of the first and second paper length calculating means, and when the comparison results do not match and the passing time exceeds the preset standard passing time, It is determined that a catch-up state has occurred.

In the second aspect of the present invention, the catch-up monitoring means is the first
When the comparison result of the comparison means of No. 1 does not match, and when the passage time exceeds the standard passage time according to the comparison result of the second comparison means, the catch-up detection signal indicating that the catch-up state of the sheet has occurred Is output. The control means stops the sheet conveying device in response to the catch-up detection signal output from the catch-up monitoring means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a main part of a transfer monitoring device according to the same embodiment, FIG. 2 is a conceptual diagram showing a main part of a banknote transfer device according to the same embodiment, and FIG. 3 is for explaining the operation of the same embodiment. 4 is a flow chart for explaining the operation of the embodiment.

As shown in FIG. 2, the transfer monitoring device 4 of the embodiment is provided in the transfer control device 3 of the banknote transfer device. The transfer control device 3 controls each component of the banknote transfer device so as to transfer the banknote m to the stacking unit 5.

The banknote transporting apparatus has a banknote m take-in section 6, a transport path 7, an inspection unit 8, a reject control section 9, and a reject section 10. When the bill m is inserted from the direction of the arrow, the take-in unit 6 sends the bill m to the conveying path 7 by rotating the conveying roller 6a. The counter 11 counts the number of bills m detected by a sensor (not shown), and outputs the count value to the transport control device 3.

The banknote m is transferred to the inspection unit 8 by the conveyance path 7.
Be transported to. The inspection unit 8 identifies the type of each banknote m conveyed and monitors banknotes and counterfeit bills other than the preset type.

Here, in the embodiment, the first sensor 1 and the second sensor 2 which are the constituent elements of the conveyance monitoring device 4 are arranged in the conveyance path 7 between the intake section 6 and the inspection unit 8. ing. Each of the sensors 1 and 2 is a photoelectric sensor including light projectors 1a and 2a and light receivers 1b and 2b. Each sensor 1, 2
Are arranged at a predetermined interval and detect the banknote m passing therethrough and output a detection signal to the conveyance monitoring device 4 of the conveyance control device 3.

The conveyance control device 3 detects the catch-up detection signal E output from the conveyance monitoring device 4 and other conveyance troubles (jams, etc.).
In response to the request, the reject control unit 9 is controlled to convey the banknote m to the reject unit 10. Further, the transfer control device 3 is
In response to the catch-up detection signal E output from the transport monitoring device 4 and other transport obstacles (jams, etc.), control is performed to stop the operation of the banknote transport device.

As shown in FIG. 1, the transport monitoring device 4 includes first and second counters 12, 13 and a rear end detection circuit 14, 1.
5, ticket length register 16, passage time register 17, standard time register 18, oscillator 19, first and second comparison circuit 2
0 and 21 and AND circuits 22 and 23 are provided.

The first counter 12 receives the rising edge of the detection signal S1 output from the first sensor 1 as an enable signal and counts the clock pulse CP generated from the oscillator 19. The trailing edge detection circuit 14 outputs the trailing edge of the detection signal S1 from the first sensor 1 as the bill trailing edge detection signal B1. When the rear end detection signal B1 is input to the clear terminal CLR, the first counter 12 outputs the count value to the input terminal IN of the ticket length register 16.

On the other hand, the second counter 13 inputs the rising edge of the detection signal S2 output from the second sensor 2 as an enable signal and counts the clock pulse CP generated from the oscillator 19. The rear end detection circuit 15 has a second
The trailing edge of the detection signal S2 from the sensor 2 is output as the bill trailing edge detection signal B2. The second counter 13
When the rear end detection signal B2 is input to the clear terminal CLR,
The second bill length data LD2, which is the count value, is output to the input terminal b of the first comparison circuit 20.

The ticket length register 16 is a FIFO (Firs).
t in First out) type register, which is a first register in response to a rear end detection signal B1 of the rear end detection circuit 14.
The count value from the counter 12 is written. In accordance with the output signal of the AND circuit 22, the stored count value from the first counter 12 is output to the input terminal a of the first comparison circuit 20 as the first bill length data LD1.

The transit time register 17 is a FIFO type register, and has a rear end detection signal B1 of the rear end detection circuit 14.
The count value from the first counter 12 is written accordingly. Further, the passage time register 17 increments the count value written in synchronization with the clock pulse CP generated from the oscillator 19. Transit time register 17
Outputs the stored transit time data TD1 to the input terminal a of the second comparison circuit 21 in accordance with the output signal of the AND circuit 22.

The standard time register 18 stores the preset standard transit time data TD2, and the second comparison circuit 2
1 to the input terminal b. The AND circuit 23 is
When the comparison results C1 and C2 of the second comparison circuits 20 and 21 are both significant, the catch-up detection signal E is output.

The AND circuit 22 reads each of the read terminals RD of the ticket length register 16 and the passage time register 17 when the rear end detection signal B2 from the rear end detection circuit 15 and the output signal Q of the flip-flop 24 are both significant. The read signal is output to. The flip-flop 24 has a bill passage time of 90 times the standard passage time monitored by the comparison result of the comparison circuit 25.
It is set when it reaches%, and is reset by the output signal of the AND circuit 22. The comparison circuit 25 compares passage time data from a timer (not shown) with 90% of the standard passage time data stored in the register 26.

Next, the operation of the embodiment will be described. (Normal operation) First, as shown in FIG. 3 (A), a plurality of banknotes ma to md are sequentially and continuously fed from the intake section 6 to the transport path 7.
When sent to the bills, the first sensor 1
A detection signal S1 that rises at the leading edge of d and falls at the trailing edge is output. Next, similarly, the second sensor 2 causes each of the banknotes ma to m.
A detection signal S2 that rises at the leading edge of d and falls at the trailing edge is output.

Here, for example, when paying attention to the bill mb, the passage time from the detection by the first sensor 1 to the detection by the second sensor 2, that is, each sensor 1,
The passing time between the two is the standard passing time T1 if the sheet is normally conveyed. Data corresponding to the standard passage time T1 is stored in the standard time register 18 as standard passage time data TD2. Therefore, the second comparison circuit 21 of the conveyance monitoring device 4 compares the comparison result C2 of the logic level "0".
Is output.

On the other hand, based on the count value of the first counter 12, the first bill length data LD1 of the bill mb stored in the bill length register 16 is normally conveyed, the second counter 13 is sent. It is the same as the second ticket length data LD2 based on the count value of. Therefore, the first comparison circuit 20 of the transfer monitoring device 4 outputs the comparison result C1 of the logic level "0". (Catchup detection operation) Next, an operation of detecting a state in which the banknote mc has caught up with the banknote mb will be described with reference to FIGS. 3B and 4.

When the preceding bill mb reaches the position of the first sensor 1 on the transport path 7, the first counter 12 starts counting the clock pulse CP in response to the rise of the detection signal S1 (step S1, S2). Further, the trailing edge detection circuit 14 detects the passage of the bill mb and outputs the trailing edge detection signal B1 (step S3). In response to the trailing edge detection signal B1, the ticket length register 16 causes the first counter 12 to
The count value from is stored as the first bill length data LD1 (steps S4 and S5). This ticket length data LD1
Is data corresponding to the length of the bill mb.

On the other hand, the transit time register 17 stores the count value from the first counter 12 as transit time data TD1 and further increments the data TD1 in synchronization with the clock pulse CP (step S6).

Here, it is assumed that the preceding banknote mb has a catch-up state in which the succeeding banknote mc has caught up.
When the preceding banknote mb reaches the position of the second sensor 2 on the transport path 7, the second counter 13 starts counting the clock pulse CP in response to the rise of the detection signal S2 (YES in step S7, S8). ).

Here, when the passage time after the bill mb is detected by the first sensor 1 becomes 90% of the standard time TD2, the flip-flop 24 is set and the signal Q of the logic level "1" is set. Is output. Further, the trailing edge detection circuit 15 passes the bill mb (actually, the trailing end of the bill mc).
Is detected and the trailing edge detection signal B2 is output (step S9).
Yes).

In response to the rear end detection signal B2, the output signal of the AND circuit 22 is output to the read terminal RD of the transit time register 17. As a result, the second comparison circuit 21
Compares the transit time data TD1 read from the transit time register 17 with the standard transit time data TD2 stored in the standard time register 18 (step S10).

Here, the passage time register 17 stores time data accumulated until the trailing edge detection circuit 15 detects the trailing edge of the banknote mc in the catch-up state. That is,
The passing time data TD1 corresponds to the time T2 added by the time α delayed in the catch-up state from the standard time T1 in the case where the sheet is normally conveyed. Therefore, the second comparison circuit 21 outputs the significant signal C2 of logic level "1" because the passage time data TD1 corresponding to the time T2 exceeds the standard passage time data TD2.

On the other hand, according to the trailing edge detection signal B2, the second counter 13 outputs the second bill length data LD which is a count value.
2 is output to the input terminal b of the first comparison circuit 20. Further, in accordance with the output signal of the AND circuit 22, the bill length register 16 stores the first bill length data LD1 in the first comparison circuit 20.
Output to the input terminal b.

As a result, the first comparison circuit 20 compares the first bill length data LD1 with the second bill length data LD2 (step S11). Here, the second ticket length data LD
2 is data corresponding to the length from the front end of the banknote mb to the rear end of the banknote mc in the catch-up state. Therefore, the first comparison circuit 20 has the logic level "1" because the second bill length data LD2 exceeds the first bill length data LD1.
And outputs the significant signal C1.

As a result, the AND circuit 23 adds the logic level "1" because the comparison results C1 and C2 of the first and second comparison circuits 20 and 21 are both significant signals of the logic level "1". The sticking detection signal E is output (step S12).
Yes). In response to the output of the catch-up detection signal E, the transport control device 3 controls the reject control unit 9 to control the bill m.
b and mc are conveyed to the reject unit 10. Further, the conveyance control device 3 performs control to stop the operation of the bill conveyance device in response to the catch-up detection signal E output from the conveyance monitoring device 4 (step S14).

In this manner, the passage time between the first sensor 1 and the second sensor 2 exceeds the standard passage time predicted in advance, and the bill length (paper sheet) measured by the sensors 1 and 2 is determined. When the comparison result of the lengths of the two) does not match, it is determined that the preceding bill is in the catch-up state in which the succeeding bill catches up with the succeeding bill.
Therefore, as compared with the conventional method that determines the catch-up state only by comparing the lengths of the sheets measured for each sensor, the comparison result of the bill lengths does not match when the bills temporarily stay when passing through the sensor. Even in this case, if the passing time is within the allowable range of the standard passing time, it is not determined that the catch-up state is in effect. In this case, if a situation occurs in which the standard passage time is exceeded due to the retention of banknotes, the retention cannot be said to be temporary, and, of course, it is determined that it is in the catch-up state.

[0037]

As described above in detail, according to the present invention, in the conveyance monitoring device for monitoring the catching state of the paper conveyance device, not only the length of the paper for each sensor is compared, but also the distance between the sensors is increased. With the catch-up determination method that also stipulates the comparison result of whether or not the transit time exceeds the standard transit time, erroneous determinations such as erroneously determining the catch-up state due to temporary retention of paper when passing the sensor are prevented. can do. Therefore, it is possible to realize reliable monitoring of the catch-up state, and when the catch-up state occurs, stop the sheet conveying device or perform reject control. As a result, it is possible to reduce the situation in which the sheet conveying device is stopped due to an erroneous determination of the catch-up state, and as a result, it is possible to improve the efficiency of the sheet conveying process.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main part of a transfer monitoring device according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a main part of a bill transporting device according to the embodiment.

FIG. 3 is a timing chart for explaining the operation of the embodiment.

FIG. 4 is a flowchart for explaining the operation of the embodiment.

FIG. 5 is a conceptual diagram for explaining a catch-up state in conventional paper conveyance.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... 1st sensor, 2 ... 2nd sensor, 3 ... conveyance control apparatus, 4 ... conveyance monitoring apparatus, 7 ... conveyance path, 9 ... reject control part, 10 ... reject part, 12 ... 1st counter, 1
3 ... 2nd counter, 14, 15 ... Rear end detection circuit, 16
... Ticket length register, 17 ... Passing time register, 18 ... Standard time register, 20 ... First comparison circuit, 21 ... Second comparison circuit, 22, 23 ... AND circuit.

Claims (4)

[Claims] 1. A transport monitoring device for a paper transporting device for continuously transporting paper of a predetermined length one by one, wherein the transporting device is arranged at a predetermined interval in a transport direction of a transport path of the paper transporting device. First and second sensor means for detecting the sheet conveyed on a path, first sheet length calculating means for calculating the length of the sheet based on a detection result of the first sensor means, Second sheet length calculating means for calculating the length of the sheet based on the detection result of the second sensor means, and the sheet is the first sheet based on the detection results of the first and second sensor means. And the second sensor means, the passage time calculation means for calculating the passage time and the calculation results of the first and second sheet length calculation means do not match, and the passage time calculation means calculates. The passing time is set in advance. Been transported monitoring apparatus characterized by catch-up state of the sheet is provided with a monitoring unit overtaking determining that occurs when it exceeds the standard transit time. 2. A transport monitoring device of a paper transport device for continuously transporting paper of a predetermined length one by one, wherein the paper is transported at a predetermined interval in the transport direction of the transport path of the paper transport device. First and second sensor means for detecting the sheet conveyed on the path, and first counter means for outputting a count value corresponding to the length of the sheet based on the detection result of the first sensor means. And a register means for storing the count value output from the first counter means as first paper length data indicating the length of the paper, and counting based on the detection result of the second sensor means. Second counter means for outputting a count value as second paper length data indicating the length of the paper, and the paper is the first and second paper based on the count value of the first counter means. Transit time calculating means for calculating transit time passing through between the sensor means, the first paper length data stored in the first register means, and the second paper output from the second counter means First comparing means for comparing long data, second comparing means for comparing the passing time calculated by the passing time calculating means with a preset standard passing time, and the first comparing means And a catch-up monitoring means for determining that a catch-up state of the sheet has occurred when the result of the comparison is not matched and the passing time exceeds the standard passing time according to the comparison result of the second comparing means. A transport monitoring device comprising: 3. A paper carrying control device for controlling a paper carrying device for carrying paper of a predetermined length continuously one by one, wherein the paper carrying device is arranged at a predetermined distance in a carrying direction of a carrying path of the paper carrying device. First and second sensor means for detecting the sheet conveyed on the conveying path, and first for outputting a count value corresponding to the length of the sheet based on the detection result of the first sensor means Counter means, register means for storing the count value output from the first counter means as first paper length data indicating the length of the paper, and based on the detection result of the second sensor means. A second counter means for outputting the counted value counted as second paper length data indicating the length of the paper, and based on the count value of the first counter means It is output from the passage time calculation means for calculating the passage time passed between the first and second sensor means, the first paper length data stored in the first register means, and the second counter means. First comparing means for comparing the second paper length data with each other, and second comparing means for comparing the passage time calculated by the passage time calculation means with a preset standard passage time, If the comparison result of the first comparing means does not match and the passing time exceeds the standard passing time according to the comparison result of the second comparing means, it is confirmed that the catch-up state of the sheet has occurred. A sheet comprising: a catching monitoring means for outputting a catching detection signal shown, and a control means for stopping the paper conveying device in response to the catching detection signal outputted from the catching monitoring means. Transport system Apparatus. 4. A paper transport control device for controlling a paper transport device for continuously transporting paper of a predetermined length one by one, wherein the paper transport device is arranged at a predetermined interval in a transport direction of a transport path of the paper transport device. First and second sensor means for detecting the sheet conveyed on the conveying path, and first for outputting a count value corresponding to the length of the sheet based on the detection result of the first sensor means Counter means, register means for storing the count value output from the first counter means as first paper length data indicating the length of the paper, and based on the detection result of the second sensor means. A second counter means for outputting the counted value counted as second paper length data indicating the length of the paper, and based on the count value of the first counter means It is output from the passage time calculation means for calculating the passage time passed between the first and second sensor means, the first paper length data stored in the first register means, and the second counter means. First comparing means for comparing the second paper length data with each other, and second comparing means for comparing the passage time calculated by the passage time calculation means with a preset standard passage time, If the comparison result of the first comparing means does not match and the passing time exceeds the standard passing time according to the comparison result of the second comparing means, it is confirmed that the catch-up state of the sheet has occurred. A catching monitoring means for outputting a catching detecting signal shown, and a rejecting device arranged in a conveying path of the sheet conveying device according to the catching detecting signal outputted from the catching monitoring means, Catching up Sheet conveyance control apparatus characterized by comprising a control unit and control means for rejecting the paper states.