JPH038667Y2 - - Google Patents

Description

[Detailed Description of the Invention] Field of the Invention The present invention relates to a banknote conveyance device in a banknote handling device such as a deposit/withdrawal machine or a money changer.

Prior Art and its Problems In a device that handles banknotes, the conveyance speed of banknotes must be within a certain range. This is done by checking whether the banknotes are being conveyed normally and whether they are getting caught somewhere, based on the time it takes for the banknotes to pass through one position and then pass through another position. This is because it is convenient to perform signal processing on the assumption that the banknotes are being conveyed at a constant speed, such as to distinguish whether the banknotes are genuine or not, or to determine whether the banknotes are front or back.

For this reason, conventionally, the rotation speed of the banknote conveyance device has been monitored using a tachometer generator, etc., but the speed rise state when the conveyance device is started is not monitored, and the conveyance speed has reached a predetermined value. A certain period of time is set, and the handling of banknotes is started from the time when the certain period of time has elapsed after the conveyance device is started.

With the above configuration, the time setting from the start of the transfer device to the start of banknote handling is set long enough to allow for a long period of time, which slows down banknote processing and reduces service to customers. Ta.

Purpose of the invention This invention aims to eliminate the wasted time included in the time from the start of the banknote transport device to the start of banknote handling in a banknote handling device, shorten the banknote processing time, and improve service to customers. It is something.

Composition of the invention The present invention monitors the speed increase at the time of startup of the banknote conveyance device, detects that the speed has reached a predetermined value, and
The present invention provides a banknote handling device that starts handling banknotes in response to the detection signal.

Embodiment FIG. 1 shows the main parts of an apparatus according to an embodiment of the present invention.
1 is a conveyor belt, and 2 is a motor for driving the conveyor belt. 3 is a disc attached to the driven pulley shaft of the conveyor belt, and the photocoupler 4 detects small holes h provided at equal intervals on the circumference. It is configured. A counter 5 counts the output pulses of the tachogenerator. 6 is a real-time clock generator, and when its output pulse is applied to the counter 5, the counter 5 is reset. The conveyance speed of the conveyor belt 1 is monitored by the count value of the counter 5 during one period of the real-time clock pulse. 7 is a control circuit;
A flowchart of operations related to the present invention is shown in FIG. 3, and the control circuit 7 naturally controls the entire banknote handling device and performs information processing. When a motor drive signal is applied from the control circuit 7 to the driver circuit 8, the motor 2 is driven by the driver circuit.

After starting the motor 2, the control circuit 7 determines that the speed of the conveyor belt has reached a predetermined value, sends a signal to the clutch 9, and starts feeding the banknotes 10 one by one to the conveyor belt 1. let

Figure 2A shows the rise in the conveying speed of the conveyor belt 1 from the start of the motor 2, Figure 2B shows the output pulse of the tachogenerator on the same time axis, and Figure 2C shows the real-time clock on the same time axis. . The conveyance speed is monitored by the number of output pulses of the tachogenerator during one cycle T of this clock.

FIG. 3 is a flowchart of the control operation of the control circuit when starting the conveying device. When the transport motor 2 is started by an external signal such as a withdrawal command signal, the presence or absence of a real-time clock is detected.When the real-time clock is received, the count value TG of the counter 5 at that time is held and synchronized. Reset the counter and
Compare the count value TG held above with a preset number a as the count value of the counter at a predetermined conveyance speed, and if TG<(NO), the operation returns to step B, and TG>a(YES). Then, clutch
When it turns ON, the control operation at startup ends.

In addition, photoelectric detectors P1 and P are installed before and after the conveyor belt 1.
2 is arranged, and counts the number of real-time clocks from when the leading edge of the bill is detected by P1 to when it is detected by P2, and counts the count output of counter 5 during one period of the same clock. The normal operation of the conveyance device and the correct conveyance of banknotes are monitored by checking that each count value is within a predetermined range.

Although the above-mentioned embodiment relates to a withdrawal device, it goes without saying that the present invention can also be applied to a deposit device. In this case, the clutch 9 serves as a shutter for the bill insertion slot or a bill take-in roller.

Effects According to the present invention, the waiting time from the start of the banknote transfer device to the start of banknote handling is not determined based on an estimate, but is determined by detecting when the speed of the transfer device actually reaches a predetermined value or higher. Since handling is started after the banknotes have been processed, there is no need to include a margin of time as would be the case in the case of estimates, which reduces waiting time, reduces processing time for banknotes, and improves service to customers.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a main part of an embodiment of the present invention, FIG. 2 is a time chart at the time of starting the conveying device, and FIG. 3 is a flow chart of the control operation at the time of starting. 1... Conveyor belt, 2... Drive motor, 3...
A disc constituting a tachometer generator, 4...a photocoupler forming a tachometer generator, 9...a clutch, 10...a banknote.

Claims (1)

[Scope of utility model registration request] A pulse generating means interlocked with a bill conveyance device, a counter for counting the pulses, a pulse generator for generating pulses of a constant period for resetting the counter, and a pulse generator for resetting the counter when the conveyance device is started. A banknote handling device comprising a control circuit that compares a previous count output with a predetermined value, detects that the count value has exceeded the predetermined value, and starts handling banknotes upon this detection.