Paper money temporary storage module, drum rotating speed control method thereof and automatic teller machine

Abstract

The invention discloses a paper money temporary storage module, a drum rotating speed control method thereof and an automatic teller machine. The method comprises the following steps: detecting the flow amount of identification information on a tape within certain unit time; calculating to obtain the line speeds of a large drum and a small drum; calculating to obtain a first angular speed and a second angular speed according to an expected line speed and a PID (Proportion Integration Differentiation) algorithm; controlling a first power motor which corresponds to the large drum and a second power motor which corresponds to the small drum respectively according to the first angular speed and the second angular speed. In the technical scheme provided by the embodiment of the invention, the calculation of the line speeds of the large drum and the small drum is not influenced by the tape thickness, paper money thickness and drum radius, so that the accurate line speeds of the large drum and the small drum can be obtained, and the line speeds of the large drum and the small drum can be kept constant.

Description

technical field [0001] The present application relates to the technical field of banknote storage equipment, and more specifically, to a banknote temporary storage module and a method for controlling the rotational speed of a reel. Background technique [0002] The automatic cash recycling machine is equipped with a temporary storage module, which temporarily stores banknotes during the transaction process. Most of the commonly used temporary storage modules currently use a reel / tape mechanism, including: the first power motor, the second power motor, the large reel driven by the first power motor, the small reel driven by the second power motor and two The ends are respectively fixed on the large reel and the small reel, the winding tape is retracted between the large and small reels, and the microcontroller that controls the start or stop of the first power motor and the second power motor. This temporary storage module realizes the temporary storage of banknotes by using...

AI Technical Summary

Problems solved by technology

Wherein the small reel rotates once, and its radius increase is constant, which is equal to the thickness of the tape. Due to the different thicknesses of the tapes of different specifications, the temporary storage module has poor adaptability to tapes of different thicknesses.

When the large reel rotates once, the increase in radius △X is equal to the thickness of the tape plus the thickness of the banknote. Because the distance between the banknotes is different and the thickness of different banknotes is different, it is impossible to accurately calculate △X, that is, the banknotes cannot be calculated accurately. Turning radius after entering the large reel

As a result, the linear speeds of the small and large drums obtained are not accurate enough, further resulting in large errors in the angular velocities of the first and second power motors, which cannot guarantee the constant linear speed of the large and small drums, resulting in The linear speed of the large reel and the small reel is different. When the deviation is relatively large, it is easy to cause tape throwing, or the load of the motor becomes larger, which will damage the hardware circuit, cause a shutdown due to failure, and increase manual maintenance.

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