Paper money temporary storage module and reel rotating speed control method thereof

Abstract

The invention relates to a paper money temporary storage module and a reel rotating speed control method thereof. The paper money temporary storage module comprises a large reel driven by a first power motor, a small reel driven by a second power motor, a coiling tape, a first coded disc, a second coded disc, a first sensor, a second sensor and a microcontroller, wherein two ends of the coiling tape are respectively fixed on the large reel and the small reel and the coiling tape is retracted and wound between the large reel and the small reel; the first coded disc is fixed on a rotating shaft of the large reel; the second coded disc is fixed on a rotating shaft of the small reel; the first sensor is arranged corresponding to the first coded disc and is used for monitoring the rotating angle of the large reel; the second sensor is arranged corresponding to the second coded disc and is used for monitoring the rotating angle of the small reel; and the microcontroller is used for calculating the length of the coil tape released by the small reel when the large reel rotates for a circle according to output signals of the first sensor and the second sensor and further calculating the current radius of the large reel, and thus angular velocities of the large reel and the small reel are controlled and the linear velocity of the large reel is enabled to be consistent with that of the small reel.

Description

technical field [0001] The invention relates to the control field of financial self-service equipment, in particular to a banknote temporary storage module of an automatic teller machine and a method for controlling the rotating speed of the reel. Background technique [0002] A temporary storage module is provided in the automatic cash recycling machine. The temporary storage module temporarily stores the banknotes in the transaction process. Most of the currently commonly used temporary storage modules use a reel / tape mechanism. The temporary storage module includes a large reel driven by a first power motor, a small reel driven by a second power motor, and two ends respectively fixed on the large reel and the small reel, between the large and small reels The wound tape is retracted, and the first motor and the second motor are started or stopped by a microcontroller. This temporary storage module realizes the temporary storage of banknotes by using the cooperating work...

AI Technical Summary

Problems solved by technology

[0005] When the current radius of the small reel is determined, the angular velocity of the small reel can be adjusted to ensure its linear velocity is constant. However, since the radius change of the large reel is estimated based on empirical values, it cannot accurately reflect the real radius of the large reel. It is also impossible to calculate the accurate angular velocity, which cannot guarantee the constant linear velocity of the large reel. The linear velocity of the large reel and the small reel is different. When the deviation is relatively large, it is easy to cause the tape to be thrown, or the motor load to change. Large, damage the hardware circuit, cause downtime due to failure, and increase manual maintenance

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