JPH038091A - Counting system - Google Patents

Abstract

PURPOSE:To reduce an error caused by an electric noise, to count paper sheets as soon as arrival, to correct irregular paper sheets to be mixed and to improve the exactness and high sped of a system by deciding the presence and absence of the paper sheets according to the output of presence and absence from a sensor in plural times. CONSTITUTION:The output to show the presence of the paper sheet is received from a sensor 3 and frequency is counted by the first counting means of a control circuit 4. Then, in an adding means, a counter 5 is advanced by 1 according to a number (n) (n>=2) determined in advance. When the output showing the absence comes from the sensor in m-times (m>=2,) a second counting means clears the values of both counting means in case that the value of the first counting means does not achieve the (n). Then, when the first count value is n-e (a value for which the allowable minimum length of the paper sheet in a conveying direction is divided by a pitch,) 1 is subtracted from an added value since the length of the paper sheet is lacked, then, the values of the both counting means are cleared. When the count value of the first counting means is l or more than l, the paper sheet is judged as the normal paper sheet and only the values of the both means are cleared.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a counting method, particularly for counting paper sheets of a certain size such as banknotes on a paper sheet conveying device installed in an automatic teller machine or the like. Start counting method.

[Conventional technology]

Conventionally, the paper sheet counting method in this type of paper sheet conveying device has been to install a sensor that detects the presence or absence of paper sheets on the conveyance path that conveys the paper sheets, and to place a sensor that detects the presence or absence of paper sheets in the sheet conveyance direction. Two sensors are provided with an interval of the minimum allowable length between them, and the counter is incremented by one when both of the two sensors receive an output indicating that a paper sheet is present.

[Problem to be solved by the invention]

In the conventional counting method described above, erroneous counting may occur due to electrical noise or sensor output caused by small paper waste on the conveyance path. Although one sensor can detect the arrival of a legitimate paper sheet, there is a drawback that the selection operation cannot be started until both sensors are covered by the paper sheet.

[Means to solve the problem]

The configuration of the present invention will be explained with reference to FIGS. 1 and 2.

FIG. 2 is a block diagram of the applied system, in which the conveyance path 1 moves in the direction of the arrow at a constant period and at the same pitch. Paper sheets 2 on the conveyance path 1 are transported together with the conveyance path l. The sensor 3 sends the presence or absence of the paper sheet 2 to the control circuit 4 in synchronization with the movement cycle of the conveyance path 1. The control circuit 4 controls the paper sheet 4 by the means shown in FIG.
The counter 5 is driven by counting.

FIG. 1 is a block diagram of the control circuit 4. When the sensor 3 receives an output indicating the presence of paper sheets, the first counting means counts the number of times, and the adding means calculates the number of times the number of sheets is present. If so, the value of counter 5 is incremented by one. On the other hand, the second counting means checks whether the paper sheet heat output from the sensor has occurred continuously a predetermined m times, for example, twice, and when the output reaches m times, the count value of the first counting means reaches n. If it has not reached the 1st point. The value of the second counting means is cleared to an initial state. If the count value of the first counting means is n-1, the length of the paper sheet in the conveyance direction does not reach the minimum allowable length and it should not be counted, so one value is added from the value already added to the counter. Subtract the first. Second
Clear the value of the counting means and set it to the initial state. If the count value of the first counting means is ρ or more than 1, it is determined that the paper sheet has come to a normal end. Only the value of the second counting means is cleared.

With the above configuration, for example, the length of the banknote in the conveying direction is 76 mm.
If the moving pitch of the transport path is 31111, then 1
If =9, banknotes shorter than 3 dragons x 8 = 24 Iam will not be counted, so banknotes of approximately 1/3 or more will be counted as valid.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 3 is a flowchart of an embodiment of the present invention. The applied system is the same as that in FIG. to 3
The case where the banknotes are transferred in increments of 1/3 and the banknotes are counted as valid if they are about 1/3 of the length is shown, and the case where the control circuit is configured with a processing device such as a microprocessor is shown.

In Figure 3, when an output is input from the sensor, it is first checked to see if there is an output from the paper sheet (step ■), and if it is, the A counter is incremented by 1 (step ■), and then the B counter is (step ■), and the value of the A counter becomes 2.
Check if the value of A counter is 2 (step ■).
If so, send an output that adds 1 to the counter 5 (step ■), and end the process. If the value of the A counter is other than 2 in step (2), the process ends. Sensor output is “no” in step ■
If so, add 1 to the B counter (step ■) 0th B
Check whether the value of the counter is 2 (step ■), and if it is not 2, that is, 1, the process ends. If it is 2, check the value of the A counter (step ■), and if the value is between 2 and 9. If it is a banknote or the like that does not reach the allowable size, send an output to subtract 1 from the value of the counter 5 (step ■), clear the B counter, ri, and A counter (step [phase]
, ■), end. If the value of the A counter is 0 in step (2), no paper sheet is sensed, and if it is 1, it is determined that there is an error, and the process moves to step [phase] to clear the B counter and A counter. Further, if the value of the A counter is 9 or more in step (2), it is assumed that the banknote is normal and the process moves to step [phase] to clear the B counter and the A counter.

In addition, in the above embodiment, the judgment value is the case where the output from the sensor is 'present' twice, and the case where it is 'absent' twice in a row, but these values can be further increased to increase certainty. It is clear that it can be done.

〔Effect of the invention〕

As explained in detail above, the present invention determines the presence or absence of paper sheets based on the presence/absence output from the sensor multiple times, so there are fewer errors caused by electrical noise, and the paper sheets are counted as soon as they arrive, and then the Since the count can be corrected when it is determined that the sheet is not a paper sheet, the next processing operation can be started as soon as the sheet arrives, which has the effect of increasing the accuracy and speed of the system.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of the present invention, FIG. 2 is a system diagram to which the present invention is applied, and FIG. 3 is a flowchart of one embodiment of the present invention. 1... Conveyance path, 2... Paper sheets, 3... Sensor, 4
...Control circuit, 5...Counter.

Claims (1)

[Claims] In a counting method that counts the number of paper sheets on a conveyance path that transports paper sheets of a fixed size, the paper sheets are transported at regular intervals at regular intervals, and the presence or absence of paper sheets is checked in synchronization with this fixed cycle. A sensor to detect, a first counting means for counting the number of times this sensor has an output, and a counting value of an output counter when the count value of the first counting means reaches n (n≧2). an addition output means for incrementing by one; a second counting means for detecting that the non-output of the sensor has been output m (m≧2) times; When the count value of the counting means is greater than n-1 and smaller than the value l obtained by dividing the minimum allowable length of the paper sheet in the conveying direction by the pitch, the count value of the output counter is decreased by one, and the count value of the output counter is decreased by one, and and a subtraction output means for clearing the second counting means, and a count value of the first counting means at the time of detection by the second counting means.
and clearing means for clearing the first and second counting means when the number is smaller than l-1 or larger than l-1.