Media Dispenser Motor Synchronization via Electronic Control
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Solution Overview
Problem
Existing media dispensers face synchronization challenges between the pick unit and stacker wheel motors, leading to potential banknote collisions and increased service time due to the need for precise alignment and synchronization of gears or belts.
Innovation Solution
A controller system that allows independent control of the pick unit motor and stacker wheel motor, enabling them to be moved to reset positions and synchronized automatically, eliminating the need for mechanical coupling and reducing the risk of human error during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gears or belts are used to link the stacker wheel motor to the pick unit motor for synchronization, then the motors can be synchronized, but the service time increases due to the need for decoupling and realignment
Solution Approach 1:
The patent replaces the mechanical synchronization system (gears or belts) with an electronic control system. The controller independently controls both the pick unit motor and stacker wheel motor, eliminating the need for mechanical coupling. This substitution removes the need for physical alignment and decoupling during maintenance, directly resolving the contradiction between maintaining synchronization reliability and reducing service time.
2Reliability
If gears or belts are used to link the motors, then synchronization is achieved, but the complexity of the system increases due to mechanical coupling requirements
Solution Approach 1:
The patent eliminates mechanical coupling components (gears or belts) by implementing independent electronic control of both motors through a controller. This substitution simplifies the system architecture by removing mechanical transmission elements and their associated alignment and coupling requirements, directly addressing the complexity issue while maintaining synchronization through electronic coordination.
3Reliability
If mechanical gears or belts are used for motor linkage, then synchronization is possible, but the risk of banknote collision with tines increases if alignment is incorrect
Solution Approach 1:
The patent replaces the mechanical linkage system with independent electronic motor control, eliminating the physical components (gears or belts) that require precise alignment. By controlling the motors electronically without mechanical coupling, the system removes the source of alignment errors that could cause banknote collisions with stacker wheel tines, directly reducing the harmful factor while maintaining synchronization.
Data Source
AI summary
A media dispenser comprises: a pick unit arranged to pick individual sheets under control of a pick unit motor; a transport section arranged to transport each picked sheet; a stacker wheel arranged to collate transported sheets under control of a stacker wheel motor; and a controller including a counter. The controller is arranged to (i) enable selectively the pick unit motor and the stacker wheel motor, (ii) provide a first step signal to both the pick unit motor and an input to the counter, and (iii) provide an output from the counter as a second step signal to the stacker wheel motor.