Coin Sorter Encoder Timing for Offsorting Precision

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Solution Overview

Problem

Existing coin sorters lack precision in determining coin position and timing for offsorting operations, leading to inefficiencies and inaccuracies in the sorting process.

Innovation Solution

A coin sorter equipped with an encoder that calculates the timing of interactions between coins and components using coin size attributes, enabling precise control of the diverter mechanism for improved offsorting accuracy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional coin sensors and diverter mechanisms are used without encoder-based timing, then the sorting operation can proceed with simpler hardware, but the speed and accuracy of offsorting operations deteriorate due to imprecise coin position determination

Engineering Contradiction:
Improvecoin position determination accuracyVSAvoidsorting system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces traditional mechanical position-sensing methods with an encoder-based timing system. The encoder mounted on the drive shaft provides precise rotational position information, which is converted into timing signals that accurately indicate when coins pass specific points on the sorting track. This substitution of mechanical sensing with electronic timing measurement resolves the contradiction by providing high measurement precision without requiring complex mechanical sensing hardware at each sorting station.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediary computational layer that processes encoder signals to calculate coin positions and timing. The controller receives encoder counts, calculates the position of each coin based on its diameter and the encoder's rotational position, and determines the optimal timing for diverter activation. This intermediary computation resolves the contradiction by using simple encoder hardware combined with algorithmic processing to achieve precise coin position determination without complex physical sensing systems.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If encoder-based timing control is implemented, then the accuracy of diverter activation is improved, but the device complexity increases due to additional sensors and control mechanisms

Engineering Contradiction:
Improvediverter activation accuracyVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent makes the encoder serve multiple functions: it provides timing information for coin detection, calculates coin positions for multiple sorting stations, determines optimal diverter activation timing, and enables speed control of the sorting mechanism. By making the encoder a universal timing reference for all sorting operations, the patent achieves high reliability in diverter activation without proportionally increasing device complexity, as a single encoder replaces what would otherwise require multiple specialized sensors and control systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements a feedback loop where the encoder continuously provides positional information about the drive shaft rotation, the controller calculates actual coin positions based on this feedback, and the system adjusts diverter activation timing accordingly. This feedback mechanism ensures high reliability of diverter activation by continuously monitoring and responding to actual coin positions, while the feedback is achieved through processing simple encoder counts rather than requiring complex real-time sensing infrastructure.

Inventive Principle:
Principle #23Feedback

3Manufacturing precision

If precise coin size measurement and timing calculation are used to control the diverter, then offsorting accuracy is improved, but the processing time and computational requirements increase

Engineering Contradiction:
Improveoffsorting precisionVSAvoidprocessing time per coin
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The patent performs preliminary measurements of coin diameter at the sensor station before the coin reaches the sorting position. The system calculates the expected timing for diverter activation in advance, based on the measured coin size and the encoder's rotational position. This preliminary action allows the system to prepare for precise offsorting without delaying the actual sorting operation, as the timing calculations are performed while the coin is still being conveyed toward the sorting position.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent maintains continuous operation of the sorting mechanism at full speed, with the encoder providing continuous timing information that allows the controller to calculate coin positions and trigger diverters in real-time without interrupting the flow of coins. The useful action of coin sorting continues uninterrupted, as the precise timing control is achieved through continuous encoder feedback and real-time calculation rather than through stop-and-measure procedures that would cause time loss.

Inventive Principle:
Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances the speed and accuracy of the offsorting operation by accurately determining coin positions and interactions, reducing improper sorting and increasing the efficiency of the coin sorting process.

Implementation Method 1

an encoder providing an encoder count based on the rotation of the drive member

Methodology Applied
Scientific EffectEncoder:

Implementation Method 2

Inductive sensors measure alloy characteristics

Methodology Applied
Scientific EffectInductive sensing: Electromagnetic Induction

Implementation Method 3

an optical sensor is used to detect coins by denomination by measuring a size of each coin

Methodology Applied
Scientific EffectOptical sensing: Photoelectric Effect

Implementation Method 4

An induction coil located beneath the track in advance of the diverter mechanism

Methodology Applied
Scientific EffectElectromagnetic actuation: Electromagnet

Data Source

PatentUS9070240B2Method and apparatus for offsorting coins in a coin handling machine
Publication Date: 2015.06.30 TALARIS INC
  • US9070240B2 patent drawing
  • US9070240B2 patent drawing
  • US9070240B2 patent drawing

AI summary

A coin sorter machine including an encoder and a sensor assembly more accurately determines the position of coins in a coin sorting path to facilitate coin sorting. The coin sorter uses a coin size attribute to more accurately calculate the timing of interactions between coins on the coin sorting path and one or more components of the coin sorter. One such component is a diverter configured to perform an offsorting operation.