Multi-Color Coin Contamination Detection Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing coin sorting machines face challenges in accurately detecting contamination at high throughput rates with short verification times, particularly in distinguishing different coin surfaces and ensuring fitness for circulation.
Innovation Solution
The implementation of a contamination detector with two light sources of different colors and a photosensor, arranged on a common circuit board, illuminates coins and compares the reflected light intensity with stored comparison values to determine fitness for circulation, allowing for simultaneous or sequential detection by multiple devices positioned optimally along the coin transport path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple contamination detection devices are used to improve detection accuracy for different coin surfaces, then measurement precision is improved, but device complexity increases
Solution Approach 1:
Multiple contamination detection devices are integrated onto a single common circuit board, physically combining multiple detection functions into one unified structure. This reduces the overall device complexity while maintaining the capability to detect different coin surfaces accurately.
Solution Approach 2:
The contamination detection system is designed to handle multiple coin types and surfaces through a unified multi-device architecture on one circuit board, allowing the system to perform multiple detection functions simultaneously without requiring separate dedicated devices for each coin type.
2Productivity
If high throughput rates are maintained for fast coin verification, then productivity is improved, but measurement precision deteriorates due to short verification times
Solution Approach 1:
The system performs preliminary positioning and setup of multiple detection devices on a common circuit board before coin verification begins, allowing rapid sequential or parallel detection during high-speed operation without sacrificing measurement precision even at short verification times.
Solution Approach 2:
Multiple contamination detection devices operate in parallel or rapid succession to continuously verify coins at high throughput rates, ensuring that no coin passes without detection while maintaining the speed required for high productivity.
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
This solution enhances recognition accuracy and reliability, enabling effective detection of contamination and additional features like coin value and authenticity, while maintaining high throughput and short verification times.
Implementation Method 1
Light sources are positioned along a transport track for coins. The light reflected from the coins is recorded and analyzed using a CCD.
Implementation Method 2
Each with at least one photosensor, wherein the two contamination detection devices each further have at least two light sources of different colors
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a contamination detector (1) for determining the circulating condition of coins, in particular for a coin sorting machine (32), wherein the contamination detector (1) comprises at least one control device (27) and at least one contamination detection device (3) with at least one photosensor (17). The invention further relates to a method for detecting contamination of coins, in particular for determining the circulating condition of coins, wherein a contamination detector (1) with at least one contamination detection device (3) is used, which comprises at least two light sources (11, 13, 15) and at least one photosensor (17) for detecting the light reflected from the light sources (11, 13, 15) on a coin.To provide a contamination detector, a coin sorting machine, and a method for contamination detection that can reliably and quickly detect the contamination of coins, the contamination detector (1) is provided, according to the invention, to have at least one contamination detection device (3) further comprising at least two light sources (11, 13, 15) of different colors. The coin sorting machine (32) according to the invention is provided to have at least one contamination detector (1) according to the invention.The method according to the invention provides that a coin is illuminated with at least two different colors of visible light by the at least two light sources (11, 13, 15), the light reflected by the coin is detected by the at least one photosensor (17), and the measured intensity of the reflected light is compared by a control device (27) with at least one reference value previously stored in a storage unit (51).