Coin-roll ejecting device with single sensor detection
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Solution Overview
Problem
Existing coin-roll ejecting devices require multiple sensors and complex configurations to detect rolls of coins, leading to increased production costs and limited storage capacity.
Innovation Solution
A coin-roll ejecting device with a simplified configuration that uses an ejecting mechanism with a rotating member and a detecting unit to determine the presence of rolls of coins without the need for sensors in every storing unit, employing a retry operation to handle cases where rolls are stuck in a 'bridge' phenomenon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensors are provided in every cassette to detect rolls of coins, then the detection reliability is improved, but the device complexity and production cost increase
Solution Approach 1:
The patent combines multiple detection functions into a single sensor system. Instead of having separate sensors in each cassette to detect coin rolls, the invention uses one sensor that detects the presence of rolls by monitoring changes in electrical resistance or capacitance when rolls are inserted into or removed from the cassette. This merging approach maintains detection reliability while significantly reducing device complexity and production costs.
Solution Approach 2:
The single sensor system serves multiple detection purposes: it detects whether a roll of coins is present in the cassette, monitors the insertion and removal of rolls, and can identify different types of rolls based on their electrical characteristics. This multi-functionality eliminates the need for multiple specialized sensors while maintaining comprehensive detection capability.
2Measurement precision
If two sensors are provided in every cassette to detect rolls of coins, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent replaces the mechanical/optical sensor system with an electrical measurement system. Instead of using sensors that physically detect or optically scan for coin rolls, the invention uses electrical sensors that measure changes in resistance or capacitance caused by the presence of metallic coin rolls. This substitution maintains measurement precision while simplifying the sensor configuration and reducing overall device complexity.
3Difficulty of detecting and measuring
If rolls of coins are stored side-by-side with diameter direction parallel in the cassette, then the detection capability is improved, but the storage capacity is limited
Solution Approach 1:
The patent introduces a dynamic detection method that does not require rolls to be stored in a specific static configuration. The single sensor system can detect rolls regardless of their orientation or arrangement in the cassette by monitoring electrical property changes. This dynamic detection approach allows rolls to be stored in various configurations, including stacked arrangements, thereby increasing storage capacity while maintaining detection capability.
Data Source
AI summary
A coin-roll ejecting device (1) includes a storing unit (10) that stores therein a plurality of rolls of coins and having an ejecting mechanism (19) for ejecting the stored rolls of coins one by one; an ejected coin-roll detecting unit (84) that detects a roll of coins ejected from the storing unit (10) by the ejecting mechanism (19); and a controlling unit (70) that determines whether a roll of coins is present in the storing unit (10) based on a detection result of the roll of coins obtained by the ejected coin-roll detecting unit (84).